diff options
110 files changed, 6077 insertions, 632 deletions
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml index 5f2f884..73856ba 100644 --- a/.github/workflows/main.yml +++ b/.github/workflows/main.yml @@ -186,6 +186,11 @@ jobs: ## Unzip and remove the artifact unzip artifacts.zip rm artifacts.zip + - name: initialize vcpkg + uses: actions/checkout@v2 + with: + repository: 'microsoft/vcpkg' + path: 'compat/vcbuild/vcpkg' - name: download vcpkg artifacts shell: powershell run: | diff --git a/Documentation/Makefile b/Documentation/Makefile index 81d1bf7..874a01d 100644 --- a/Documentation/Makefile +++ b/Documentation/Makefile @@ -76,6 +76,7 @@ SP_ARTICLES += howto/rebuild-from-update-hook SP_ARTICLES += howto/rebase-from-internal-branch SP_ARTICLES += howto/keep-canonical-history-correct SP_ARTICLES += howto/maintain-git +SP_ARTICLES += howto/coordinate-embargoed-releases API_DOCS = $(patsubst %.txt,%,$(filter-out technical/api-index-skel.txt technical/api-index.txt, $(wildcard technical/api-*.txt))) SP_ARTICLES += $(API_DOCS) diff --git a/Documentation/RelNotes/2.32.0.txt b/Documentation/RelNotes/2.32.0.txt index f39eede..5c329d5 100644 --- a/Documentation/RelNotes/2.32.0.txt +++ b/Documentation/RelNotes/2.32.0.txt @@ -47,6 +47,17 @@ UI, Workflows & Features * "git send-email" learned to honor the core.hooksPath configuration. + * "git format-patch -v<n>" learned to allow a reroll count that is + not an integer. + + * "git commit" learned "--trailer <key>[=<value>]" option; together + with the interpret-trailers command, this will make it easier to + support custom trailers. + + * "git clone --reject-shallow" option fails the clone as soon as we + notice that we are cloning from a shallow repository. + + Performance, Internal Implementation, Development Support etc. @@ -65,6 +76,27 @@ Performance, Internal Implementation, Development Support etc. * Reorganize Makefile to allow building git.o and other essential objects without extra stuff needed only for testing. + * Preparatory API changes for parallel checkout. + + * A simple IPC interface gets introduced to build services like + fsmonitor on top. + + * Fsck API clean-up. + + * SECURITY.md that is facing individual contributors and end users + has been introduced. Also a procedure to follow when preparing + embargoed releases has been spelled out. + (merge 09420b7648 js/security-md later to maint). + + * Optimize "rev-list --use-bitmap-index --objects" corner case that + uses negative tags as the stopping points. + + * CMake update for vsbuild. + + * An on-disk reverse-index to map the in-pack location of an object + back to its object name across multiple packfiles is introduced. + + * Generate [ec]tags under $(QUIET_GEN). Fixes since v2.31 @@ -120,6 +152,28 @@ Fixes since v2.31 symbolic links, which has been corrected. (merge fab78a0c3d mt/checkout-remove-nofollow later to maint). + * A few option description strings started with capital letters, + which were corrected. + (merge 5ee90326dc cc/downcase-opt-help later to maint). + + * Plug or annotate remaining leaks that trigger while running the + very basic set of tests. + (merge 68ffe095a2 ah/plugleaks later to maint). + + * The hashwrite() API uses a buffering mechanism to avoid calling + write(2) too frequently. This logic has been refactored to be + easier to understand. + (merge ddaf1f62e3 ds/clarify-hashwrite later to maint). + + * "git cherry-pick/revert" with or without "--[no-]edit" did not spawn + the editor as expected (e.g. "revert --no-edit" after a conflict + still asked to edit the message), which has been corrected. + (merge 39edfd5cbc en/sequencer-edit-upon-conflict-fix later to maint). + + * "git daemon" has been tightened against systems that take backslash + as directory separator. + (merge 9a7f1ce8b7 rs/daemon-sanitize-dir-sep later to maint). + * Other code cleanup, docfix, build fix, etc. (merge f451960708 dl/cat-file-doc-cleanup later to maint). (merge 12604a8d0c sv/t9801-test-path-is-file-cleanup later to maint). diff --git a/Documentation/config/clone.txt b/Documentation/config/clone.txt index 47de36a..7bcfbd1 100644 --- a/Documentation/config/clone.txt +++ b/Documentation/config/clone.txt @@ -2,3 +2,7 @@ clone.defaultRemoteName:: The name of the remote to create when cloning a repository. Defaults to `origin`, and can be overridden by passing the `--origin` command-line option to linkgit:git-clone[1]. + +clone.rejectShallow:: + Reject to clone a repository if it is a shallow one, can be overridden by + passing option `--reject-shallow` in command line. See linkgit:git-clone[1] diff --git a/Documentation/config/pack.txt b/Documentation/config/pack.txt index 3da4ea9..c0844d8 100644 --- a/Documentation/config/pack.txt +++ b/Documentation/config/pack.txt @@ -122,6 +122,21 @@ pack.useSparse:: commits contain certain types of direct renames. Default is `true`. +pack.preferBitmapTips:: + When selecting which commits will receive bitmaps, prefer a + commit at the tip of any reference that is a suffix of any value + of this configuration over any other commits in the "selection + window". ++ +Note that setting this configuration to `refs/foo` does not mean that +the commits at the tips of `refs/foo/bar` and `refs/foo/baz` will +necessarily be selected. This is because commits are selected for +bitmaps from within a series of windows of variable length. ++ +If a commit at the tip of any reference which is a suffix of any value +of this configuration is seen in a window, it is immediately given +preference over any other commit in that window. + pack.writeBitmaps (deprecated):: This is a deprecated synonym for `repack.writeBitmaps`. diff --git a/Documentation/git-clone.txt b/Documentation/git-clone.txt index 02d9c19..3fe3810 100644 --- a/Documentation/git-clone.txt +++ b/Documentation/git-clone.txt @@ -15,7 +15,7 @@ SYNOPSIS [--dissociate] [--separate-git-dir <git dir>] [--depth <depth>] [--[no-]single-branch] [--no-tags] [--recurse-submodules[=<pathspec>]] [--[no-]shallow-submodules] - [--[no-]remote-submodules] [--jobs <n>] [--sparse] + [--[no-]remote-submodules] [--jobs <n>] [--sparse] [--[no-]reject-shallow] [--filter=<filter>] [--] <repository> [<directory>] @@ -149,6 +149,11 @@ objects from the source repository into a pack in the cloned repository. --no-checkout:: No checkout of HEAD is performed after the clone is complete. +--[no-]reject-shallow:: + Fail if the source repository is a shallow repository. + The 'clone.rejectShallow' configuration variable can be used to + specify the default. + --bare:: Make a 'bare' Git repository. That is, instead of creating `<directory>` and placing the administrative diff --git a/Documentation/git-commit.txt b/Documentation/git-commit.txt index 3c69f46..340c5fb 100644 --- a/Documentation/git-commit.txt +++ b/Documentation/git-commit.txt @@ -14,7 +14,8 @@ SYNOPSIS [--allow-empty-message] [--no-verify] [-e] [--author=<author>] [--date=<date>] [--cleanup=<mode>] [--[no-]status] [-i | -o] [--pathspec-from-file=<file> [--pathspec-file-nul]] - [-S[<keyid>]] [--] [<pathspec>...] + [(--trailer <token>[(=|:)<value>])...] [-S[<keyid>]] + [--] [<pathspec>...] DESCRIPTION ----------- @@ -199,6 +200,17 @@ The `-m` option is mutually exclusive with `-c`, `-C`, and `-F`. include::signoff-option.txt[] +--trailer <token>[(=|:)<value>]:: + Specify a (<token>, <value>) pair that should be applied as a + trailer. (e.g. `git commit --trailer "Signed-off-by:C O Mitter \ + <committer@example.com>" --trailer "Helped-by:C O Mitter \ + <committer@example.com>"` will add the "Signed-off-by" trailer + and the "Helped-by" trailer to the commit message.) + The `trailer.*` configuration variables + (linkgit:git-interpret-trailers[1]) can be used to define if + a duplicated trailer is omitted, where in the run of trailers + each trailer would appear, and other details. + -n:: --no-verify:: This option bypasses the pre-commit and commit-msg hooks. diff --git a/Documentation/git-format-patch.txt b/Documentation/git-format-patch.txt index 5cd8578..911da18 100644 --- a/Documentation/git-format-patch.txt +++ b/Documentation/git-format-patch.txt @@ -238,6 +238,11 @@ populated with placeholder text. `--subject-prefix` option) has ` v<n>` appended to it. E.g. `--reroll-count=4` may produce `v4-0001-add-makefile.patch` file that has "Subject: [PATCH v4 1/20] Add makefile" in it. + `<n>` does not have to be an integer (e.g. "--reroll-count=4.4", + or "--reroll-count=4rev2" are allowed), but the downside of + using such a reroll-count is that the range-diff/interdiff + with the previous version does not state exactly which + version the new interation is compared against. --to=<email>:: Add a `To:` header to the email headers. This is in addition diff --git a/Documentation/git-multi-pack-index.txt b/Documentation/git-multi-pack-index.txt index eb0caa0..ffd601b 100644 --- a/Documentation/git-multi-pack-index.txt +++ b/Documentation/git-multi-pack-index.txt @@ -9,7 +9,8 @@ git-multi-pack-index - Write and verify multi-pack-indexes SYNOPSIS -------- [verse] -'git multi-pack-index' [--object-dir=<dir>] [--[no-]progress] <subcommand> +'git multi-pack-index' [--object-dir=<dir>] [--[no-]progress] + [--preferred-pack=<pack>] <subcommand> DESCRIPTION ----------- @@ -30,7 +31,16 @@ OPTIONS The following subcommands are available: write:: - Write a new MIDX file. + Write a new MIDX file. The following options are available for + the `write` sub-command: ++ +-- + --preferred-pack=<pack>:: + Optionally specify the tie-breaking pack used when + multiple packs contain the same object. If not given, + ties are broken in favor of the pack with the lowest + mtime. +-- verify:: Verify the contents of the MIDX file. diff --git a/Documentation/howto/coordinate-embargoed-releases.txt b/Documentation/howto/coordinate-embargoed-releases.txt new file mode 100644 index 0000000..601aae8 --- /dev/null +++ b/Documentation/howto/coordinate-embargoed-releases.txt @@ -0,0 +1,131 @@ +Content-type: text/asciidoc +Abstract: When a critical vulnerability is discovered and fixed, we follow this + script to coordinate a public release. + +How we coordinate embargoed releases +==================================== + +To protect Git users from critical vulnerabilities, we do not just release +fixed versions like regular maintenance releases. Instead, we coordinate +releases with packagers, keeping the fixes under an embargo until the release +date. That way, users will have a chance to upgrade on that date, no matter +what Operating System or distribution they run. + +Open a Security Advisory draft +------------------------------ + +The first step is to https://github.com/git/git/security/advisories/new[open an +advisory]. Technically, it is not necessary, but it is convenient and saves a +bit of hassle. This advisory can also be used to obtain the CVE number and it +will give us a private fork associated with it that can be used to collaborate +on a fix. + +Release date of the embargoed version +------------------------------------- + +If the vulnerability affects Windows users, we want to have our friends over at +Visual Studio on board. This means we need to target a "Patch Tuesday" (i.e. a +second Tuesday of the month), at the minimum three weeks from heads-up to +coordinated release. + +If the vulnerability affects the server side, or can benefit from scans on the +server side (i.e. if `git fsck` can detect an attack), it is important to give +all involved Git repository hosting sites enough time to scan all of those +repositories. + +Notifying the Linux distributions +--------------------------------- + +At most two weeks before release date, we need to send a notification to +distros@vs.openwall.org, preferably less than 7 days before the release date. +This will reach most (all?) Linux distributions. See an example below, and the +guidelines for this mailing list at +https://oss-security.openwall.org/wiki/mailing-lists/distros#how-to-use-the-lists[here]. + +Once the version has been published, we send a note about that to oss-security. +As an example, see https://www.openwall.com/lists/oss-security/2019/12/13/1[the +v2.24.1 mail]; +https://oss-security.openwall.org/wiki/mailing-lists/oss-security[Here] are +their guidelines. + +The mail to oss-security should also describe the exploit, and give credit to +the reporter(s): security researchers still receive too little respect for the +invaluable service they provide, and public credit goes a long way to keep them +paid by their respective organizations. + +Technically, describing any exploit can be delayed up to 7 days, but we usually +refrain from doing that, including it right away. + +As a courtesy we typically attach a Git bundle (as `.tar.xz` because the list +will drop `.bundle` attachments) in the mail to distros@ so that the involved +parties can take care of integrating/backporting them. This bundle is typically +created using a command like this: + + git bundle create cve-xxx.bundle ^origin/master vA.B.C vD.E.F + tar cJvf cve-xxx.bundle.tar.xz cve-xxx.bundle + +Example mail to distros@vs.openwall.org +--------------------------------------- + +.... +To: distros@vs.openwall.org +Cc: git-security@googlegroups.com, <other people involved in the report/fix> +Subject: [vs] Upcoming Git security fix release + +Team, + +The Git project will release new versions on <date> at 10am Pacific Time or +soon thereafter. I have attached a Git bundle (embedded in a `.tar.xz` to avoid +it being dropped) which you can fetch into a clone of +https://github.com/git/git via `git fetch --tags /path/to/cve-xxx.bundle`, +containing the tags for versions <versions>. + +You can verify with `git tag -v <tag>` that the versions were signed by +the Git maintainer, using the same GPG key as e.g. v2.24.0. + +Please use these tags to prepare `git` packages for your various +distributions, using the appropriate tagged versions. The added test cases +help verify the correctness. + +The addressed issues are: + +<list of CVEs with a short description, typically copy/pasted from Git's +release notes, usually demo exploit(s), too> + +Credit for finding the vulnerability goes to <reporter>, credit for fixing +it goes to <developer>. + +Thanks, +<name> + +.... + +Example mail to oss-security@lists.openwall.com +----------------------------------------------- + +.... +To: oss-security@lists.openwall.com +Cc: git-security@googlegroups.com, <other people involved in the report/fix> +Subject: git: <copy from security advisory> + +Team, + +The Git project released new versions on <date>, addressing <CVE>. + +All supported platforms are affected in one way or another, and all Git +versions all the way back to <version> are affected. The fixed versions are: +<versions>. + +Link to the announcement: <link to lore.kernel.org/git> + +We highly recommend to upgrade. + +The addressed issues are: +* <list of CVEs and their explanations, along with demo exploits> + +Credit for finding the vulnerability goes to <reporter>, credit for fixing +it goes to <developer>. + +Thanks, +<name> +.... diff --git a/Documentation/technical/api-simple-ipc.txt b/Documentation/technical/api-simple-ipc.txt new file mode 100644 index 0000000..d79ad32 --- /dev/null +++ b/Documentation/technical/api-simple-ipc.txt @@ -0,0 +1,105 @@ +Simple-IPC API +============== + +The Simple-IPC API is a collection of `ipc_` prefixed library routines +and a basic communication protocol that allow an IPC-client process to +send an application-specific IPC-request message to an IPC-server +process and receive an application-specific IPC-response message. + +Communication occurs over a named pipe on Windows and a Unix domain +socket on other platforms. IPC-clients and IPC-servers rendezvous at +a previously agreed-to application-specific pathname (which is outside +the scope of this design) that is local to the computer system. + +The IPC-server routines within the server application process create a +thread pool to listen for connections and receive request messages +from multiple concurrent IPC-clients. When received, these messages +are dispatched up to the server application callbacks for handling. +IPC-server routines then incrementally relay responses back to the +IPC-client. + +The IPC-client routines within a client application process connect +to the IPC-server and send a request message and wait for a response. +When received, the response is returned back the caller. + +For example, the `fsmonitor--daemon` feature will be built as a server +application on top of the IPC-server library routines. It will have +threads watching for file system events and a thread pool waiting for +client connections. Clients, such as `git status` will request a list +of file system events since a point in time and the server will +respond with a list of changed files and directories. The formats of +the request and response are application-specific; the IPC-client and +IPC-server routines treat them as opaque byte streams. + + +Comparison with sub-process model +--------------------------------- + +The Simple-IPC mechanism differs from the existing `sub-process.c` +model (Documentation/technical/long-running-process-protocol.txt) and +used by applications like Git-LFS. In the LFS-style sub-process model +the helper is started by the foreground process, communication happens +via a pair of file descriptors bound to the stdin/stdout of the +sub-process, the sub-process only serves the current foreground +process, and the sub-process exits when the foreground process +terminates. + +In the Simple-IPC model the server is a very long-running service. It +can service many clients at the same time and has a private socket or +named pipe connection to each active client. It might be started +(on-demand) by the current client process or it might have been +started by a previous client or by the OS at boot time. The server +process is not associated with a terminal and it persists after +clients terminate. Clients do not have access to the stdin/stdout of +the server process and therefore must communicate over sockets or +named pipes. + + +Server startup and shutdown +--------------------------- + +How an application server based upon IPC-server is started is also +outside the scope of the Simple-IPC design and is a property of the +application using it. For example, the server might be started or +restarted during routine maintenance operations, or it might be +started as a system service during the system boot-up sequence, or it +might be started on-demand by a foreground Git command when needed. + +Similarly, server shutdown is a property of the application using +the simple-ipc routines. For example, the server might decide to +shutdown when idle or only upon explicit request. + + +Simple-IPC protocol +------------------- + +The Simple-IPC protocol consists of a single request message from the +client and an optional response message from the server. Both the +client and server messages are unlimited in length and are terminated +with a flush packet. + +The pkt-line routines (Documentation/technical/protocol-common.txt) +are used to simplify buffer management during message generation, +transmission, and reception. A flush packet is used to mark the end +of the message. This allows the sender to incrementally generate and +transmit the message. It allows the receiver to incrementally receive +the message in chunks and to know when they have received the entire +message. + +The actual byte format of the client request and server response +messages are application specific. The IPC layer transmits and +receives them as opaque byte buffers without any concern for the +content within. It is the job of the calling application layer to +understand the contents of the request and response messages. + + +Summary +------- + +Conceptually, the Simple-IPC protocol is similar to an HTTP REST +request. Clients connect, make an application-specific and +stateless request, receive an application-specific +response, and disconnect. It is a one round trip facility for +querying the server. The Simple-IPC routines hide the socket, +named pipe, and thread pool details and allow the application +layer to focus on the application at hand. diff --git a/Documentation/technical/multi-pack-index.txt b/Documentation/technical/multi-pack-index.txt index e8e377a..fb68897 100644 --- a/Documentation/technical/multi-pack-index.txt +++ b/Documentation/technical/multi-pack-index.txt @@ -43,8 +43,9 @@ Design Details a change in format. - The MIDX keeps only one record per object ID. If an object appears - in multiple packfiles, then the MIDX selects the copy in the most- - recently modified packfile. + in multiple packfiles, then the MIDX selects the copy in the + preferred packfile, otherwise selecting from the most-recently + modified packfile. - If there exist packfiles in the pack directory not registered in the MIDX, then those packfiles are loaded into the `packed_git` diff --git a/Documentation/technical/pack-format.txt b/Documentation/technical/pack-format.txt index 1faa949..8d2f42f 100644 --- a/Documentation/technical/pack-format.txt +++ b/Documentation/technical/pack-format.txt @@ -379,3 +379,86 @@ CHUNK DATA: TRAILER: Index checksum of the above contents. + +== multi-pack-index reverse indexes + +Similar to the pack-based reverse index, the multi-pack index can also +be used to generate a reverse index. + +Instead of mapping between offset, pack-, and index position, this +reverse index maps between an object's position within the MIDX, and +that object's position within a pseudo-pack that the MIDX describes +(i.e., the ith entry of the multi-pack reverse index holds the MIDX +position of ith object in pseudo-pack order). + +To clarify the difference between these orderings, consider a multi-pack +reachability bitmap (which does not yet exist, but is what we are +building towards here). Each bit needs to correspond to an object in the +MIDX, and so we need an efficient mapping from bit position to MIDX +position. + +One solution is to let bits occupy the same position in the oid-sorted +index stored by the MIDX. But because oids are effectively random, their +resulting reachability bitmaps would have no locality, and thus compress +poorly. (This is the reason that single-pack bitmaps use the pack +ordering, and not the .idx ordering, for the same purpose.) + +So we'd like to define an ordering for the whole MIDX based around +pack ordering, which has far better locality (and thus compresses more +efficiently). We can think of a pseudo-pack created by the concatenation +of all of the packs in the MIDX. E.g., if we had a MIDX with three packs +(a, b, c), with 10, 15, and 20 objects respectively, we can imagine an +ordering of the objects like: + + |a,0|a,1|...|a,9|b,0|b,1|...|b,14|c,0|c,1|...|c,19| + +where the ordering of the packs is defined by the MIDX's pack list, +and then the ordering of objects within each pack is the same as the +order in the actual packfile. + +Given the list of packs and their counts of objects, you can +naïvely reconstruct that pseudo-pack ordering (e.g., the object at +position 27 must be (c,1) because packs "a" and "b" consumed 25 of the +slots). But there's a catch. Objects may be duplicated between packs, in +which case the MIDX only stores one pointer to the object (and thus we'd +want only one slot in the bitmap). + +Callers could handle duplicates themselves by reading objects in order +of their bit-position, but that's linear in the number of objects, and +much too expensive for ordinary bitmap lookups. Building a reverse index +solves this, since it is the logical inverse of the index, and that +index has already removed duplicates. But, building a reverse index on +the fly can be expensive. Since we already have an on-disk format for +pack-based reverse indexes, let's reuse it for the MIDX's pseudo-pack, +too. + +Objects from the MIDX are ordered as follows to string together the +pseudo-pack. Let `pack(o)` return the pack from which `o` was selected +by the MIDX, and define an ordering of packs based on their numeric ID +(as stored by the MIDX). Let `offset(o)` return the object offset of `o` +within `pack(o)`. Then, compare `o1` and `o2` as follows: + + - If one of `pack(o1)` and `pack(o2)` is preferred and the other + is not, then the preferred one sorts first. ++ +(This is a detail that allows the MIDX bitmap to determine which +pack should be used by the pack-reuse mechanism, since it can ask +the MIDX for the pack containing the object at bit position 0). + + - If `pack(o1) ≠pack(o2)`, then sort the two objects in descending + order based on the pack ID. + + - Otherwise, `pack(o1) = pack(o2)`, and the objects are sorted in + pack-order (i.e., `o1` sorts ahead of `o2` exactly when `offset(o1) + < offset(o2)`). + +In short, a MIDX's pseudo-pack is the de-duplicated concatenation of +objects in packs stored by the MIDX, laid out in pack order, and the +packs arranged in MIDX order (with the preferred pack coming first). + +Finally, note that the MIDX's reverse index is not stored as a chunk in +the multi-pack-index itself. This is done because the reverse index +includes the checksum of the pack or MIDX to which it belongs, which +makes it impossible to write in the MIDX. To avoid races when rewriting +the MIDX, a MIDX reverse index includes the MIDX's checksum in its +filename (e.g., `multi-pack-index-xyz.rev`). diff --git a/Documentation/user-manual.txt b/Documentation/user-manual.txt index fd480b8..f9e54b8 100644 --- a/Documentation/user-manual.txt +++ b/Documentation/user-manual.txt @@ -1,5 +1,8 @@ = Git User Manual +[preface] +== Introduction + Git is a fast distributed revision control system. This manual is designed to be readable by someone with basic UNIX @@ -693,6 +693,7 @@ X = PROGRAMS += $(patsubst %.o,git-%$X,$(PROGRAM_OBJS)) TEST_BUILTINS_OBJS += test-advise.o +TEST_BUILTINS_OBJS += test-bitmap.o TEST_BUILTINS_OBJS += test-bloom.o TEST_BUILTINS_OBJS += test-chmtime.o TEST_BUILTINS_OBJS += test-config.o @@ -744,6 +745,7 @@ TEST_BUILTINS_OBJS += test-serve-v2.o TEST_BUILTINS_OBJS += test-sha1.o TEST_BUILTINS_OBJS += test-sha256.o TEST_BUILTINS_OBJS += test-sigchain.o +TEST_BUILTINS_OBJS += test-simple-ipc.o TEST_BUILTINS_OBJS += test-strcmp-offset.o TEST_BUILTINS_OBJS += test-string-list.o TEST_BUILTINS_OBJS += test-submodule-config.o @@ -1679,6 +1681,14 @@ ifdef NO_UNIX_SOCKETS BASIC_CFLAGS += -DNO_UNIX_SOCKETS else LIB_OBJS += unix-socket.o + LIB_OBJS += unix-stream-server.o + LIB_OBJS += compat/simple-ipc/ipc-shared.o + LIB_OBJS += compat/simple-ipc/ipc-unix-socket.o +endif + +ifdef USE_WIN32_IPC + LIB_OBJS += compat/simple-ipc/ipc-shared.o + LIB_OBJS += compat/simple-ipc/ipc-win32.o endif ifdef NO_ICONV @@ -2690,12 +2700,14 @@ FIND_SOURCE_FILES = ( \ ) $(ETAGS_TARGET): FORCE - $(RM) $(ETAGS_TARGET) - $(FIND_SOURCE_FILES) | xargs etags -a -o $(ETAGS_TARGET) + $(QUIET_GEN)$(RM) "$(ETAGS_TARGET)+" && \ + $(FIND_SOURCE_FILES) | xargs etags -a -o "$(ETAGS_TARGET)+" && \ + mv "$(ETAGS_TARGET)+" "$(ETAGS_TARGET)" tags: FORCE - $(RM) tags - $(FIND_SOURCE_FILES) | xargs ctags -a + $(QUIET_GEN)$(RM) tags+ && \ + $(FIND_SOURCE_FILES) | xargs ctags -a -o tags+ && \ + mv tags+ tags cscope: $(RM) cscope* diff --git a/SECURITY.md b/SECURITY.md new file mode 100644 index 0000000..c720c2a --- /dev/null +++ b/SECURITY.md @@ -0,0 +1,51 @@ +# Security Policy + +## Reporting a vulnerability + +Please send a detailed mail to git-security@googlegroups.com to +report vulnerabilities in Git. + +Even when unsure whether the bug in question is an exploitable +vulnerability, it is recommended to send the report to +git-security@googlegroups.com (and obviously not to discuss the +issue anywhere else). + +Vulnerabilities are expected to be discussed _only_ on that +list, and not in public, until the official announcement on the +Git mailing list on the release date. + +Examples for details to include: + +- Ideally a short description (or a script) to demonstrate an + exploit. +- The affected platforms and scenarios (the vulnerability might + only affect setups with case-sensitive file systems, for + example). +- The name and affiliation of the security researchers who are + involved in the discovery, if any. +- Whether the vulnerability has already been disclosed. +- How long an embargo would be required to be safe. + +## Supported Versions + +There are no official "Long Term Support" versions in Git. +Instead, the maintenance track (i.e. the versions based on the +most recently published feature release, also known as ".0" +version) sees occasional updates with bug fixes. + +Fixes to vulnerabilities are made for the maintenance track for +the latest feature release and merged up to the in-development +branches. The Git project makes no formal guarantee for any +older maintenance tracks to receive updates. In practice, +though, critical vulnerability fixes are applied not only to the +most recent track, but to at least a couple more maintenance +tracks. + +This is typically done by making the fix on the oldest and still +relevant maintenance track, and merging it upwards to newer and +newer maintenance tracks. + +For example, v2.24.1 was released to address a couple of +[CVEs](https://cve.mitre.org/), and at the same time v2.14.6, +v2.15.4, v2.16.6, v2.17.3, v2.18.2, v2.19.3, v2.20.2, v2.21.1, +v2.22.2 and v2.23.1 were released. @@ -21,6 +21,7 @@ #include "quote.h" #include "rerere.h" #include "apply.h" +#include "entry.h" struct gitdiff_data { struct strbuf *root; diff --git a/builtin/checkout-index.c b/builtin/checkout-index.c index 023e49e..c0bf4ac 100644 --- a/builtin/checkout-index.c +++ b/builtin/checkout-index.c @@ -11,6 +11,7 @@ #include "quote.h" #include "cache-tree.h" #include "parse-options.h" +#include "entry.h" #define CHECKOUT_ALL 4 static int nul_term_line; diff --git a/builtin/checkout.c b/builtin/checkout.c index 0e66390..4c696ef 100644 --- a/builtin/checkout.c +++ b/builtin/checkout.c @@ -26,6 +26,7 @@ #include "unpack-trees.h" #include "wt-status.h" #include "xdiff-interface.h" +#include "entry.h" static const char * const checkout_usage[] = { N_("git checkout [<options>] <branch>"), diff --git a/builtin/clone.c b/builtin/clone.c index 51e844a..f6b0c48 100644 --- a/builtin/clone.c +++ b/builtin/clone.c @@ -50,6 +50,8 @@ static int option_no_checkout, option_bare, option_mirror, option_single_branch static int option_local = -1, option_no_hardlinks, option_shared; static int option_no_tags; static int option_shallow_submodules; +static int option_reject_shallow = -1; /* unspecified */ +static int config_reject_shallow = -1; /* unspecified */ static int deepen; static char *option_template, *option_depth, *option_since; static char *option_origin = NULL; @@ -90,6 +92,8 @@ static struct option builtin_clone_options[] = { OPT__VERBOSITY(&option_verbosity), OPT_BOOL(0, "progress", &option_progress, N_("force progress reporting")), + OPT_BOOL(0, "reject-shallow", &option_reject_shallow, + N_("don't clone shallow repository")), OPT_BOOL('n', "no-checkout", &option_no_checkout, N_("don't create a checkout")), OPT_BOOL(0, "bare", &option_bare, N_("create a bare repository")), @@ -858,6 +862,9 @@ static int git_clone_config(const char *k, const char *v, void *cb) free(remote_name); remote_name = xstrdup(v); } + if (!strcmp(k, "clone.rejectshallow")) + config_reject_shallow = git_config_bool(k, v); + return git_default_config(k, v, cb); } @@ -963,11 +970,12 @@ static int path_exists(const char *path) int cmd_clone(int argc, const char **argv, const char *prefix) { int is_bundle = 0, is_local; + int reject_shallow = 0; const char *repo_name, *repo, *work_tree, *git_dir; - char *path, *dir, *display_repo = NULL; + char *path = NULL, *dir, *display_repo = NULL; int dest_exists, real_dest_exists = 0; const struct ref *refs, *remote_head; - const struct ref *remote_head_points_at; + struct ref *remote_head_points_at = NULL; const struct ref *our_head_points_at; struct ref *mapped_refs; const struct ref *ref; @@ -1017,9 +1025,10 @@ int cmd_clone(int argc, const char **argv, const char *prefix) repo_name = argv[0]; path = get_repo_path(repo_name, &is_bundle); - if (path) + if (path) { + FREE_AND_NULL(path); repo = absolute_pathdup(repo_name); - else if (strchr(repo_name, ':')) { + } else if (strchr(repo_name, ':')) { repo = repo_name; display_repo = transport_anonymize_url(repo); } else @@ -1157,6 +1166,15 @@ int cmd_clone(int argc, const char **argv, const char *prefix) git_config(git_clone_config, NULL); /* + * If option_reject_shallow is specified from CLI option, + * ignore config_reject_shallow from git_clone_config. + */ + if (config_reject_shallow != -1) + reject_shallow = config_reject_shallow; + if (option_reject_shallow != -1) + reject_shallow = option_reject_shallow; + + /* * apply the remote name provided by --origin only after this second * call to git_config, to ensure it overrides all config-based values. */ @@ -1216,6 +1234,8 @@ int cmd_clone(int argc, const char **argv, const char *prefix) if (filter_options.choice) warning(_("--filter is ignored in local clones; use file:// instead.")); if (!access(mkpath("%s/shallow", path), F_OK)) { + if (reject_shallow) + die(_("source repository is shallow, reject to clone.")); if (option_local > 0) warning(_("source repository is shallow, ignoring --local")); is_local = 0; @@ -1227,6 +1247,8 @@ int cmd_clone(int argc, const char **argv, const char *prefix) transport_set_option(transport, TRANS_OPT_KEEP, "yes"); + if (reject_shallow) + transport_set_option(transport, TRANS_OPT_REJECT_SHALLOW, "1"); if (option_depth) transport_set_option(transport, TRANS_OPT_DEPTH, option_depth); @@ -1393,6 +1415,11 @@ cleanup: strbuf_release(&reflog_msg); strbuf_release(&branch_top); strbuf_release(&key); + free_refs(mapped_refs); + free_refs(remote_head_points_at); + free(dir); + free(path); + UNLEAK(repo); junk_mode = JUNK_LEAVE_ALL; strvec_clear(&transport_ls_refs_options.ref_prefixes); diff --git a/builtin/column.c b/builtin/column.c index e815e14..40d4b3b 100644 --- a/builtin/column.c +++ b/builtin/column.c @@ -27,10 +27,10 @@ int cmd_column(int argc, const char **argv, const char *prefix) OPT_STRING(0, "command", &real_command, N_("name"), N_("lookup config vars")), OPT_COLUMN(0, "mode", &colopts, N_("layout to use")), OPT_INTEGER(0, "raw-mode", &colopts, N_("layout to use")), - OPT_INTEGER(0, "width", &copts.width, N_("Maximum width")), - OPT_STRING(0, "indent", &copts.indent, N_("string"), N_("Padding space on left border")), - OPT_INTEGER(0, "nl", &copts.nl, N_("Padding space on right border")), - OPT_INTEGER(0, "padding", &copts.padding, N_("Padding space between columns")), + OPT_INTEGER(0, "width", &copts.width, N_("maximum width")), + OPT_STRING(0, "indent", &copts.indent, N_("string"), N_("padding space on left border")), + OPT_INTEGER(0, "nl", &copts.nl, N_("padding space on right border")), + OPT_INTEGER(0, "padding", &copts.padding, N_("padding space between columns")), OPT_END() }; diff --git a/builtin/commit.c b/builtin/commit.c index d513858..55d50a8 100644 --- a/builtin/commit.c +++ b/builtin/commit.c @@ -114,6 +114,7 @@ static int config_commit_verbose = -1; /* unspecified */ static int no_post_rewrite, allow_empty_message, pathspec_file_nul; static char *untracked_files_arg, *force_date, *ignore_submodule_arg, *ignored_arg; static char *sign_commit, *pathspec_from_file; +static struct strvec trailer_args = STRVEC_INIT; /* * The default commit message cleanup mode will remove the lines @@ -132,6 +133,14 @@ static struct strbuf message = STRBUF_INIT; static enum wt_status_format status_format = STATUS_FORMAT_UNSPECIFIED; +static int opt_pass_trailer(const struct option *opt, const char *arg, int unset) +{ + BUG_ON_OPT_NEG(unset); + + strvec_pushl(&trailer_args, "--trailer", arg, NULL); + return 0; +} + static int opt_parse_porcelain(const struct option *opt, const char *arg, int unset) { enum wt_status_format *value = (enum wt_status_format *)opt->value; @@ -994,6 +1003,18 @@ static int prepare_to_commit(const char *index_file, const char *prefix, fclose(s->fp); + if (trailer_args.nr) { + struct child_process run_trailer = CHILD_PROCESS_INIT; + + strvec_pushl(&run_trailer.args, "interpret-trailers", + "--in-place", git_path_commit_editmsg(), NULL); + strvec_pushv(&run_trailer.args, trailer_args.v); + run_trailer.git_cmd = 1; + if (run_command(&run_trailer)) + die(_("unable to pass trailers to --trailers")); + strvec_clear(&trailer_args); + } + /* * Reject an attempt to record a non-merge empty commit without * explicit --allow-empty. In the cherry-pick case, it may be @@ -1596,6 +1617,7 @@ int cmd_commit(int argc, const char **argv, const char *prefix) OPT_STRING(0, "fixup", &fixup_message, N_("[(amend|reword):]commit"), N_("use autosquash formatted message to fixup or amend/reword specified commit")), OPT_STRING(0, "squash", &squash_message, N_("commit"), N_("use autosquash formatted message to squash specified commit")), OPT_BOOL(0, "reset-author", &renew_authorship, N_("the commit is authored by me now (used with -C/-c/--amend)")), + OPT_CALLBACK_F(0, "trailer", NULL, N_("trailer"), N_("add custom trailer(s)"), PARSE_OPT_NONEG, opt_pass_trailer), OPT_BOOL('s', "signoff", &signoff, N_("add a Signed-off-by trailer")), OPT_FILENAME('t', "template", &template_file, N_("use specified template file")), OPT_BOOL('e', "edit", &edit_flag, N_("force edit of commit")), diff --git a/builtin/credential-cache--daemon.c b/builtin/credential-cache--daemon.c index c61f123..4c6c89a 100644 --- a/builtin/credential-cache--daemon.c +++ b/builtin/credential-cache--daemon.c @@ -203,9 +203,10 @@ static int serve_cache_loop(int fd) static void serve_cache(const char *socket_path, int debug) { + struct unix_stream_listen_opts opts = UNIX_STREAM_LISTEN_OPTS_INIT; int fd; - fd = unix_stream_listen(socket_path); + fd = unix_stream_listen(socket_path, &opts); if (fd < 0) die_errno("unable to bind to '%s'", socket_path); diff --git a/builtin/credential-cache.c b/builtin/credential-cache.c index 9b3f709..76a6ba3 100644 --- a/builtin/credential-cache.c +++ b/builtin/credential-cache.c @@ -14,7 +14,7 @@ static int send_request(const char *socket, const struct strbuf *out) { int got_data = 0; - int fd = unix_stream_connect(socket); + int fd = unix_stream_connect(socket, 0); if (fd < 0) return -1; diff --git a/builtin/difftool.c b/builtin/difftool.c index 6e18e62..ef25729 100644 --- a/builtin/difftool.c +++ b/builtin/difftool.c @@ -23,6 +23,7 @@ #include "lockfile.h" #include "object-store.h" #include "dir.h" +#include "entry.h" static int trust_exit_code; diff --git a/builtin/fsck.c b/builtin/fsck.c index 821e779..70ff958 100644 --- a/builtin/fsck.c +++ b/builtin/fsck.c @@ -71,11 +71,6 @@ static const char *printable_type(const struct object_id *oid, return ret; } -static int fsck_config(const char *var, const char *value, void *cb) -{ - return fsck_config_internal(var, value, cb, &fsck_obj_options); -} - static int objerror(struct object *obj, const char *err) { errors_found |= ERROR_OBJECT; @@ -89,7 +84,9 @@ static int objerror(struct object *obj, const char *err) static int fsck_error_func(struct fsck_options *o, const struct object_id *oid, enum object_type object_type, - int msg_type, const char *message) + enum fsck_msg_type msg_type, + enum fsck_msg_id msg_id, + const char *message) { switch (msg_type) { case FSCK_WARN: @@ -197,7 +194,8 @@ static int traverse_reachable(void) return !!result; } -static int mark_used(struct object *obj, int type, void *data, struct fsck_options *options) +static int mark_used(struct object *obj, enum object_type object_type, + void *data, struct fsck_options *options) { if (!obj) return 1; @@ -803,7 +801,7 @@ int cmd_fsck(int argc, const char **argv, const char *prefix) if (name_objects) fsck_enable_object_names(&fsck_walk_options); - git_config(fsck_config, NULL); + git_config(git_fsck_config, &fsck_obj_options); if (connectivity_only) { for_each_loose_object(mark_loose_for_connectivity, NULL, 0); diff --git a/builtin/index-pack.c b/builtin/index-pack.c index 2189968..15507b5 100644 --- a/builtin/index-pack.c +++ b/builtin/index-pack.c @@ -120,7 +120,7 @@ static int nr_threads; static int from_stdin; static int strict; static int do_fsck_object; -static struct fsck_options fsck_options = FSCK_OPTIONS_STRICT; +static struct fsck_options fsck_options = FSCK_OPTIONS_MISSING_GITMODULES; static int verbose; static int show_resolving_progress; static int show_stat; @@ -212,7 +212,8 @@ static void cleanup_thread(void) free(thread_data); } -static int mark_link(struct object *obj, int type, void *data, struct fsck_options *options) +static int mark_link(struct object *obj, enum object_type type, + void *data, struct fsck_options *options) { if (!obj) return -1; @@ -1712,22 +1713,6 @@ static void show_pack_info(int stat_only) } } -static int print_dangling_gitmodules(struct fsck_options *o, - const struct object_id *oid, - enum object_type object_type, - int msg_type, const char *message) -{ - /* - * NEEDSWORK: Plumb the MSG_ID (from fsck.c) here and use it - * instead of relying on this string check. - */ - if (starts_with(message, "gitmodulesMissing")) { - printf("%s\n", oid_to_hex(oid)); - return 0; - } - return fsck_error_function(o, oid, object_type, msg_type, message); -} - int cmd_index_pack(int argc, const char **argv, const char *prefix) { int i, fix_thin_pack = 0, verify = 0, stat_only = 0, rev_index; @@ -1948,13 +1933,8 @@ int cmd_index_pack(int argc, const char **argv, const char *prefix) else close(input_fd); - if (do_fsck_object) { - struct fsck_options fo = fsck_options; - - fo.error_func = print_dangling_gitmodules; - if (fsck_finish(&fo)) - die(_("fsck error in pack objects")); - } + if (do_fsck_object && fsck_finish(&fsck_options)) + die(_("fsck error in pack objects")); free(objects); strbuf_release(&index_name_buf); diff --git a/builtin/init-db.c b/builtin/init-db.c index f82efe4..c19b35f 100644 --- a/builtin/init-db.c +++ b/builtin/init-db.c @@ -25,7 +25,6 @@ static int init_is_bare_repository = 0; static int init_shared_repository = -1; -static const char *init_db_template_dir; static void copy_templates_1(struct strbuf *path, struct strbuf *template_path, DIR *dir) @@ -94,7 +93,7 @@ static void copy_templates_1(struct strbuf *path, struct strbuf *template_path, } } -static void copy_templates(const char *template_dir) +static void copy_templates(const char *template_dir, const char *init_template_dir) { struct strbuf path = STRBUF_INIT; struct strbuf template_path = STRBUF_INIT; @@ -107,7 +106,7 @@ static void copy_templates(const char *template_dir) if (!template_dir) template_dir = getenv(TEMPLATE_DIR_ENVIRONMENT); if (!template_dir) - template_dir = init_db_template_dir; + template_dir = init_template_dir; if (!template_dir) template_dir = to_free = system_path(DEFAULT_GIT_TEMPLATE_DIR); if (!template_dir[0]) { @@ -154,17 +153,6 @@ free_return: clear_repository_format(&template_format); } -static int git_init_db_config(const char *k, const char *v, void *cb) -{ - if (!strcmp(k, "init.templatedir")) - return git_config_pathname(&init_db_template_dir, k, v); - - if (starts_with(k, "core.")) - return platform_core_config(k, v, cb); - - return 0; -} - /* * If the git_dir is not directly inside the working tree, then git will not * find it by default, and we need to set the worktree explicitly. @@ -212,12 +200,9 @@ static int create_default_files(const char *template_path, int reinit; int filemode; struct strbuf err = STRBUF_INIT; + const char *init_template_dir = NULL; const char *work_tree = get_git_work_tree(); - /* Just look for `init.templatedir` */ - init_db_template_dir = NULL; /* re-set in case it was set before */ - git_config(git_init_db_config, NULL); - /* * First copy the templates -- we might have the default * config file there, in which case we would want to read @@ -227,7 +212,8 @@ static int create_default_files(const char *template_path, * values (since we've just potentially changed what's available on * disk). */ - copy_templates(template_path); + git_config_get_value("init.templatedir", &init_template_dir); + copy_templates(template_path, init_template_dir); git_config_clear(); reset_shared_repository(); git_config(git_default_config, NULL); @@ -422,8 +408,8 @@ int init_db(const char *git_dir, const char *real_git_dir, } startup_info->have_repository = 1; - /* Just look for `core.hidedotfiles` */ - git_config(git_init_db_config, NULL); + /* Ensure `core.hidedotfiles` is processed */ + git_config(platform_core_config, NULL); safe_create_dir(git_dir, 0); @@ -575,8 +561,10 @@ int cmd_init_db(int argc, const char **argv, const char *prefix) if (real_git_dir && !is_absolute_path(real_git_dir)) real_git_dir = real_pathdup(real_git_dir, 1); - if (template_dir && *template_dir && !is_absolute_path(template_dir)) + if (template_dir && *template_dir && !is_absolute_path(template_dir)) { template_dir = absolute_pathdup(template_dir); + UNLEAK(template_dir); + } if (argc == 1) { int mkdir_tried = 0; diff --git a/builtin/log.c b/builtin/log.c index 980de59..8acd285 100644 --- a/builtin/log.c +++ b/builtin/log.c @@ -1662,13 +1662,19 @@ static void print_bases(struct base_tree_info *bases, FILE *file) oidclr(&bases->base_commit); } -static const char *diff_title(struct strbuf *sb, int reroll_count, - const char *generic, const char *rerolled) +static const char *diff_title(struct strbuf *sb, + const char *reroll_count, + const char *generic, + const char *rerolled) { - if (reroll_count <= 0) + int v; + + /* RFC may be v0, so allow -v1 to diff against v0 */ + if (reroll_count && !strtol_i(reroll_count, 10, &v) && + v >= 1) + strbuf_addf(sb, rerolled, v - 1); + else strbuf_addstr(sb, generic); - else /* RFC may be v0, so allow -v1 to diff against v0 */ - strbuf_addf(sb, rerolled, reroll_count - 1); return sb->buf; } @@ -1717,7 +1723,7 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix) struct strbuf buf = STRBUF_INIT; int use_patch_format = 0; int quiet = 0; - int reroll_count = -1; + const char *reroll_count = NULL; char *cover_from_description_arg = NULL; char *branch_name = NULL; char *base_commit = NULL; @@ -1751,7 +1757,7 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix) N_("use <sfx> instead of '.patch'")), OPT_INTEGER(0, "start-number", &start_number, N_("start numbering patches at <n> instead of 1")), - OPT_INTEGER('v', "reroll-count", &reroll_count, + OPT_STRING('v', "reroll-count", &reroll_count, N_("reroll-count"), N_("mark the series as Nth re-roll")), OPT_INTEGER(0, "filename-max-length", &fmt_patch_name_max, N_("max length of output filename")), @@ -1862,9 +1868,10 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix) if (cover_from_description_arg) cover_from_description_mode = parse_cover_from_description(cover_from_description_arg); - if (0 < reroll_count) { + if (reroll_count) { struct strbuf sprefix = STRBUF_INIT; - strbuf_addf(&sprefix, "%s v%d", + + strbuf_addf(&sprefix, "%s v%s", rev.subject_prefix, reroll_count); rev.reroll_count = reroll_count; rev.subject_prefix = strbuf_detach(&sprefix, NULL); diff --git a/builtin/ls-remote.c b/builtin/ls-remote.c index abfa984..1794548 100644 --- a/builtin/ls-remote.c +++ b/builtin/ls-remote.c @@ -124,8 +124,6 @@ int cmd_ls_remote(int argc, const char **argv, const char *prefix) int hash_algo = hash_algo_by_ptr(transport_get_hash_algo(transport)); repo_set_hash_algo(the_repository, hash_algo); } - if (transport_disconnect(transport)) - return 1; if (!dest && !quiet) fprintf(stderr, "From %s\n", *remote->url); @@ -151,5 +149,7 @@ int cmd_ls_remote(int argc, const char **argv, const char *prefix) } ref_array_clear(&ref_array); + if (transport_disconnect(transport)) + return 1; return status; } diff --git a/builtin/mktag.c b/builtin/mktag.c index 41a399a..dddcccd 100644 --- a/builtin/mktag.c +++ b/builtin/mktag.c @@ -14,15 +14,12 @@ static int option_strict = 1; static struct fsck_options fsck_options = FSCK_OPTIONS_STRICT; -static int mktag_config(const char *var, const char *value, void *cb) -{ - return fsck_config_internal(var, value, cb, &fsck_options); -} - static int mktag_fsck_error_func(struct fsck_options *o, const struct object_id *oid, enum object_type object_type, - int msg_type, const char *message) + enum fsck_msg_type msg_type, + enum fsck_msg_id msg_id, + const char *message) { switch (msg_type) { case FSCK_WARN: @@ -91,9 +88,10 @@ int cmd_mktag(int argc, const char **argv, const char *prefix) die_errno(_("could not read from stdin")); fsck_options.error_func = mktag_fsck_error_func; - fsck_set_msg_type(&fsck_options, "extraheaderentry", "warn"); + fsck_set_msg_type_from_ids(&fsck_options, FSCK_MSG_EXTRA_HEADER_ENTRY, + FSCK_WARN); /* config might set fsck.extraHeaderEntry=* again */ - git_config(mktag_config, NULL); + git_config(git_fsck_config, &fsck_options); if (fsck_tag_standalone(NULL, buf.buf, buf.len, &fsck_options, &tagged_oid, &tagged_type)) die(_("tag on stdin did not pass our strict fsck check")); diff --git a/builtin/multi-pack-index.c b/builtin/multi-pack-index.c index 5bf88cd..5d3ea44 100644 --- a/builtin/multi-pack-index.c +++ b/builtin/multi-pack-index.c @@ -4,67 +4,181 @@ #include "parse-options.h" #include "midx.h" #include "trace2.h" +#include "object-store.h" +#define BUILTIN_MIDX_WRITE_USAGE \ + N_("git multi-pack-index [<options>] write [--preferred-pack=<pack>]") + +#define BUILTIN_MIDX_VERIFY_USAGE \ + N_("git multi-pack-index [<options>] verify") + +#define BUILTIN_MIDX_EXPIRE_USAGE \ + N_("git multi-pack-index [<options>] expire") + +#define BUILTIN_MIDX_REPACK_USAGE \ + N_("git multi-pack-index [<options>] repack [--batch-size=<size>]") + +static char const * const builtin_multi_pack_index_write_usage[] = { + BUILTIN_MIDX_WRITE_USAGE, + NULL +}; +static char const * const builtin_multi_pack_index_verify_usage[] = { + BUILTIN_MIDX_VERIFY_USAGE, + NULL +}; +static char const * const builtin_multi_pack_index_expire_usage[] = { + BUILTIN_MIDX_EXPIRE_USAGE, + NULL +}; +static char const * const builtin_multi_pack_index_repack_usage[] = { + BUILTIN_MIDX_REPACK_USAGE, + NULL +}; static char const * const builtin_multi_pack_index_usage[] = { - N_("git multi-pack-index [<options>] (write|verify|expire|repack --batch-size=<size>)"), + BUILTIN_MIDX_WRITE_USAGE, + BUILTIN_MIDX_VERIFY_USAGE, + BUILTIN_MIDX_EXPIRE_USAGE, + BUILTIN_MIDX_REPACK_USAGE, NULL }; static struct opts_multi_pack_index { const char *object_dir; + const char *preferred_pack; unsigned long batch_size; - int progress; + unsigned flags; } opts; -int cmd_multi_pack_index(int argc, const char **argv, - const char *prefix) +static struct option common_opts[] = { + OPT_FILENAME(0, "object-dir", &opts.object_dir, + N_("object directory containing set of packfile and pack-index pairs")), + OPT_BIT(0, "progress", &opts.flags, N_("force progress reporting"), MIDX_PROGRESS), + OPT_END(), +}; + +static struct option *add_common_options(struct option *prev) { - unsigned flags = 0; + return parse_options_concat(common_opts, prev); +} + +static int cmd_multi_pack_index_write(int argc, const char **argv) +{ + struct option *options; + static struct option builtin_multi_pack_index_write_options[] = { + OPT_STRING(0, "preferred-pack", &opts.preferred_pack, + N_("preferred-pack"), + N_("pack for reuse when computing a multi-pack bitmap")), + OPT_END(), + }; + + options = add_common_options(builtin_multi_pack_index_write_options); + + trace2_cmd_mode(argv[0]); - static struct option builtin_multi_pack_index_options[] = { - OPT_FILENAME(0, "object-dir", &opts.object_dir, - N_("object directory containing set of packfile and pack-index pairs")), - OPT_BOOL(0, "progress", &opts.progress, N_("force progress reporting")), + argc = parse_options(argc, argv, NULL, + options, builtin_multi_pack_index_write_usage, + PARSE_OPT_KEEP_UNKNOWN); + if (argc) + usage_with_options(builtin_multi_pack_index_write_usage, + options); + + FREE_AND_NULL(options); + + return write_midx_file(opts.object_dir, opts.preferred_pack, + opts.flags); +} + +static int cmd_multi_pack_index_verify(int argc, const char **argv) +{ + struct option *options = common_opts; + + trace2_cmd_mode(argv[0]); + + argc = parse_options(argc, argv, NULL, + options, builtin_multi_pack_index_verify_usage, + PARSE_OPT_KEEP_UNKNOWN); + if (argc) + usage_with_options(builtin_multi_pack_index_verify_usage, + options); + + return verify_midx_file(the_repository, opts.object_dir, opts.flags); +} + +static int cmd_multi_pack_index_expire(int argc, const char **argv) +{ + struct option *options = common_opts; + + trace2_cmd_mode(argv[0]); + + argc = parse_options(argc, argv, NULL, + options, builtin_multi_pack_index_expire_usage, + PARSE_OPT_KEEP_UNKNOWN); + if (argc) + usage_with_options(builtin_multi_pack_index_expire_usage, + options); + + return expire_midx_packs(the_repository, opts.object_dir, opts.flags); +} + +static int cmd_multi_pack_index_repack(int argc, const char **argv) +{ + struct option *options; + static struct option builtin_multi_pack_index_repack_options[] = { OPT_MAGNITUDE(0, "batch-size", &opts.batch_size, N_("during repack, collect pack-files of smaller size into a batch that is larger than this size")), OPT_END(), }; + options = add_common_options(builtin_multi_pack_index_repack_options); + + trace2_cmd_mode(argv[0]); + + argc = parse_options(argc, argv, NULL, + options, + builtin_multi_pack_index_repack_usage, + PARSE_OPT_KEEP_UNKNOWN); + if (argc) + usage_with_options(builtin_multi_pack_index_repack_usage, + options); + + FREE_AND_NULL(options); + + return midx_repack(the_repository, opts.object_dir, + (size_t)opts.batch_size, opts.flags); +} + +int cmd_multi_pack_index(int argc, const char **argv, + const char *prefix) +{ + struct option *builtin_multi_pack_index_options = common_opts; + git_config(git_default_config, NULL); - opts.progress = isatty(2); + if (isatty(2)) + opts.flags |= MIDX_PROGRESS; argc = parse_options(argc, argv, prefix, builtin_multi_pack_index_options, - builtin_multi_pack_index_usage, 0); + builtin_multi_pack_index_usage, + PARSE_OPT_STOP_AT_NON_OPTION); if (!opts.object_dir) opts.object_dir = get_object_directory(); - if (opts.progress) - flags |= MIDX_PROGRESS; if (argc == 0) + goto usage; + + if (!strcmp(argv[0], "repack")) + return cmd_multi_pack_index_repack(argc, argv); + else if (!strcmp(argv[0], "write")) + return cmd_multi_pack_index_write(argc, argv); + else if (!strcmp(argv[0], "verify")) + return cmd_multi_pack_index_verify(argc, argv); + else if (!strcmp(argv[0], "expire")) + return cmd_multi_pack_index_expire(argc, argv); + else { +usage: + error(_("unrecognized subcommand: %s"), argv[0]); usage_with_options(builtin_multi_pack_index_usage, builtin_multi_pack_index_options); - - if (argc > 1) { - die(_("too many arguments")); - return 1; } - - trace2_cmd_mode(argv[0]); - - if (!strcmp(argv[0], "repack")) - return midx_repack(the_repository, opts.object_dir, - (size_t)opts.batch_size, flags); - if (opts.batch_size) - die(_("--batch-size option is only for 'repack' subcommand")); - - if (!strcmp(argv[0], "write")) - return write_midx_file(opts.object_dir, flags); - if (!strcmp(argv[0], "verify")) - return verify_midx_file(the_repository, opts.object_dir, flags); - if (!strcmp(argv[0], "expire")) - return expire_midx_packs(the_repository, opts.object_dir, flags); - - die(_("unrecognized subcommand: %s"), argv[0]); } diff --git a/builtin/pack-objects.c b/builtin/pack-objects.c index 525c2d8..a1e33d7 100644 --- a/builtin/pack-objects.c +++ b/builtin/pack-objects.c @@ -3547,6 +3547,37 @@ static void record_recent_commit(struct commit *commit, void *data) oid_array_append(&recent_objects, &commit->object.oid); } +static int mark_bitmap_preferred_tip(const char *refname, + const struct object_id *oid, int flags, + void *_data) +{ + struct object_id peeled; + struct object *object; + + if (!peel_iterated_oid(oid, &peeled)) + oid = &peeled; + + object = parse_object_or_die(oid, refname); + if (object->type == OBJ_COMMIT) + object->flags |= NEEDS_BITMAP; + + return 0; +} + +static void mark_bitmap_preferred_tips(void) +{ + struct string_list_item *item; + const struct string_list *preferred_tips; + + preferred_tips = bitmap_preferred_tips(the_repository); + if (!preferred_tips) + return; + + for_each_string_list_item(item, preferred_tips) { + for_each_ref_in(item->string, mark_bitmap_preferred_tip, NULL); + } +} + static void get_object_list(int ac, const char **av) { struct rev_info revs; @@ -3601,6 +3632,9 @@ static void get_object_list(int ac, const char **av) if (use_delta_islands) load_delta_islands(the_repository, progress); + if (write_bitmap_index) + mark_bitmap_preferred_tips(); + if (prepare_revision_walk(&revs)) die(_("revision walk setup failed")); mark_edges_uninteresting(&revs, show_edge, sparse); diff --git a/builtin/range-diff.c b/builtin/range-diff.c index 78bc9fa..5031884 100644 --- a/builtin/range-diff.c +++ b/builtin/range-diff.c @@ -25,7 +25,7 @@ int cmd_range_diff(int argc, const char **argv, const char *prefix) struct option range_diff_options[] = { OPT_INTEGER(0, "creation-factor", &range_diff_opts.creation_factor, - N_("Percentage by which creation is weighted")), + N_("percentage by which creation is weighted")), OPT_BOOL(0, "no-dual-color", &simple_color, N_("use simple diff colors")), OPT_PASSTHRU_ARGV(0, "notes", &other_arg, diff --git a/builtin/remote.c b/builtin/remote.c index 717b662..7f88e6c 100644 --- a/builtin/remote.c +++ b/builtin/remote.c @@ -938,9 +938,6 @@ static int get_remote_ref_states(const char *name, struct ref_states *states, int query) { - struct transport *transport; - const struct ref *remote_refs; - states->remote = remote_get(name); if (!states->remote) return error(_("No such remote: '%s'"), name); @@ -948,10 +945,12 @@ static int get_remote_ref_states(const char *name, read_branches(); if (query) { + struct transport *transport; + const struct ref *remote_refs; + transport = transport_get(states->remote, states->remote->url_nr > 0 ? states->remote->url[0] : NULL); remote_refs = transport_get_remote_refs(transport, NULL); - transport_disconnect(transport); states->queried = 1; if (query & GET_REF_STATES) @@ -960,6 +959,7 @@ static int get_remote_ref_states(const char *name, get_head_names(remote_refs, states); if (query & GET_PUSH_REF_STATES) get_push_ref_states(remote_refs, states); + transport_disconnect(transport); } else { for_each_ref(append_ref_to_tracked_list, states); string_list_sort(&states->tracked); diff --git a/builtin/repack.c b/builtin/repack.c index 6ce2556..2847fdf 100644 --- a/builtin/repack.c +++ b/builtin/repack.c @@ -721,7 +721,7 @@ int cmd_repack(int argc, const char **argv, const char *prefix) remove_temporary_files(); if (git_env_bool(GIT_TEST_MULTI_PACK_INDEX, 0)) - write_midx_file(get_object_directory(), 0); + write_midx_file(get_object_directory(), NULL, 0); string_list_clear(&names, 0); string_list_clear(&rollback, 0); diff --git a/builtin/reset.c b/builtin/reset.c index c635b06..43e855c 100644 --- a/builtin/reset.c +++ b/builtin/reset.c @@ -425,7 +425,7 @@ int cmd_reset(int argc, const char **argv, const char *prefix) dwim_ref(rev, strlen(rev), &dummy, &ref, 0); if (ref && !starts_with(ref, "refs/")) - ref = NULL; + FREE_AND_NULL(ref); err = reset_index(ref, &oid, reset_type, quiet); if (reset_type == KEEP && !err) diff --git a/builtin/revert.c b/builtin/revert.c index 314a86c..237f2f1 100644 --- a/builtin/revert.c +++ b/builtin/revert.c @@ -182,7 +182,7 @@ static int run_sequencer(int argc, const char **argv, struct replay_opts *opts) "--signoff", opts->signoff, "--no-commit", opts->no_commit, "-x", opts->record_origin, - "--edit", opts->edit, + "--edit", opts->edit > 0, NULL); if (cmd) { @@ -230,8 +230,6 @@ int cmd_revert(int argc, const char **argv, const char *prefix) struct replay_opts opts = REPLAY_OPTS_INIT; int res; - if (isatty(0)) - opts.edit = 1; opts.action = REPLAY_REVERT; sequencer_init_config(&opts); res = run_sequencer(argc, argv, &opts); diff --git a/builtin/stash.c b/builtin/stash.c index 3477e94..c56fed3 100644 --- a/builtin/stash.c +++ b/builtin/stash.c @@ -10,11 +10,13 @@ #include "strvec.h" #include "run-command.h" #include "dir.h" +#include "entry.h" #include "rerere.h" #include "revision.h" #include "log-tree.h" #include "diffcore.h" #include "exec-cmd.h" +#include "entry.h" #define INCLUDE_ALL_FILES 2 diff --git a/builtin/symbolic-ref.c b/builtin/symbolic-ref.c index 80237f0..e547a08 100644 --- a/builtin/symbolic-ref.c +++ b/builtin/symbolic-ref.c @@ -24,9 +24,11 @@ static int check_symref(const char *HEAD, int quiet, int shorten, int print) return 1; } if (print) { + char *to_free = NULL; if (shorten) - refname = shorten_unambiguous_ref(refname, 0); + refname = to_free = shorten_unambiguous_ref(refname, 0); puts(refname); + free(to_free); } return 0; } diff --git a/builtin/unpack-objects.c b/builtin/unpack-objects.c index a4ba2eb..4a70b17 100644 --- a/builtin/unpack-objects.c +++ b/builtin/unpack-objects.c @@ -187,7 +187,8 @@ static void write_cached_object(struct object *obj, struct obj_buffer *obj_buf) * that have reachability requirements and calls this function. * Verify its reachability and validity recursively and write it out. */ -static int check_object(struct object *obj, int type, void *data, struct fsck_options *options) +static int check_object(struct object *obj, enum object_type type, + void *data, struct fsck_options *options) { struct obj_buffer *obj_buf; diff --git a/builtin/worktree.c b/builtin/worktree.c index 1cd5c20..8771453 100644 --- a/builtin/worktree.c +++ b/builtin/worktree.c @@ -446,16 +446,18 @@ static void print_preparing_worktree_line(int detach, static const char *dwim_branch(const char *path, const char **new_branch) { int n; + int branch_exists; const char *s = worktree_basename(path, &n); const char *branchname = xstrndup(s, n); struct strbuf ref = STRBUF_INIT; UNLEAK(branchname); - if (!strbuf_check_branch_ref(&ref, branchname) && - ref_exists(ref.buf)) { - strbuf_release(&ref); + + branch_exists = !strbuf_check_branch_ref(&ref, branchname) && + ref_exists(ref.buf); + strbuf_release(&ref); + if (branch_exists) return branchname; - } *new_branch = branchname; if (guess_remote) { @@ -1621,30 +1621,6 @@ const char *show_ident_date(const struct ident_split *id, */ int ident_cmp(const struct ident_split *, const struct ident_split *); -struct checkout { - struct index_state *istate; - const char *base_dir; - int base_dir_len; - struct delayed_checkout *delayed_checkout; - struct checkout_metadata meta; - unsigned force:1, - quiet:1, - not_new:1, - clone:1, - refresh_cache:1; -}; -#define CHECKOUT_INIT { NULL, "" } - -#define TEMPORARY_FILENAME_LENGTH 25 -int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath, int *nr_checkouts); -void enable_delayed_checkout(struct checkout *state); -int finish_delayed_checkout(struct checkout *state, int *nr_checkouts); -/* - * Unlink the last component and schedule the leading directories for - * removal, such that empty directories get removed. - */ -void unlink_entry(const struct cache_entry *ce); - struct cache_def { struct strbuf path; int flags; diff --git a/compat/precompose_utf8.c b/compat/precompose_utf8.c index ec56056..cce1d57 100644 --- a/compat/precompose_utf8.c +++ b/compat/precompose_utf8.c @@ -60,10 +60,12 @@ void probe_utf8_pathname_composition(void) strbuf_release(&path); } -static inline const char *precompose_string_if_needed(const char *in) +const char *precompose_string_if_needed(const char *in) { size_t inlen; size_t outlen; + if (!in) + return NULL; if (has_non_ascii(in, (size_t)-1, &inlen)) { iconv_t ic_prec; char *out; @@ -96,10 +98,7 @@ const char *precompose_argv_prefix(int argc, const char **argv, const char *pref argv[i] = precompose_string_if_needed(argv[i]); i++; } - if (prefix) { - prefix = precompose_string_if_needed(prefix); - } - return prefix; + return precompose_string_if_needed(prefix); } diff --git a/compat/precompose_utf8.h b/compat/precompose_utf8.h index d70b846..fea06cf 100644 --- a/compat/precompose_utf8.h +++ b/compat/precompose_utf8.h @@ -29,6 +29,7 @@ typedef struct { } PREC_DIR; const char *precompose_argv_prefix(int argc, const char **argv, const char *prefix); +const char *precompose_string_if_needed(const char *in); void probe_utf8_pathname_composition(void); PREC_DIR *precompose_utf8_opendir(const char *dirname); diff --git a/compat/simple-ipc/ipc-shared.c b/compat/simple-ipc/ipc-shared.c new file mode 100644 index 0000000..1edec81 --- /dev/null +++ b/compat/simple-ipc/ipc-shared.c @@ -0,0 +1,28 @@ +#include "cache.h" +#include "simple-ipc.h" +#include "strbuf.h" +#include "pkt-line.h" +#include "thread-utils.h" + +#ifdef SUPPORTS_SIMPLE_IPC + +int ipc_server_run(const char *path, const struct ipc_server_opts *opts, + ipc_server_application_cb *application_cb, + void *application_data) +{ + struct ipc_server_data *server_data = NULL; + int ret; + + ret = ipc_server_run_async(&server_data, path, opts, + application_cb, application_data); + if (ret) + return ret; + + ret = ipc_server_await(server_data); + + ipc_server_free(server_data); + + return ret; +} + +#endif /* SUPPORTS_SIMPLE_IPC */ diff --git a/compat/simple-ipc/ipc-unix-socket.c b/compat/simple-ipc/ipc-unix-socket.c new file mode 100644 index 0000000..38689b2 --- /dev/null +++ b/compat/simple-ipc/ipc-unix-socket.c @@ -0,0 +1,999 @@ +#include "cache.h" +#include "simple-ipc.h" +#include "strbuf.h" +#include "pkt-line.h" +#include "thread-utils.h" +#include "unix-socket.h" +#include "unix-stream-server.h" + +#ifdef NO_UNIX_SOCKETS +#error compat/simple-ipc/ipc-unix-socket.c requires Unix sockets +#endif + +enum ipc_active_state ipc_get_active_state(const char *path) +{ + enum ipc_active_state state = IPC_STATE__OTHER_ERROR; + struct ipc_client_connect_options options + = IPC_CLIENT_CONNECT_OPTIONS_INIT; + struct stat st; + struct ipc_client_connection *connection_test = NULL; + + options.wait_if_busy = 0; + options.wait_if_not_found = 0; + + if (lstat(path, &st) == -1) { + switch (errno) { + case ENOENT: + case ENOTDIR: + return IPC_STATE__NOT_LISTENING; + default: + return IPC_STATE__INVALID_PATH; + } + } + + /* also complain if a plain file is in the way */ + if ((st.st_mode & S_IFMT) != S_IFSOCK) + return IPC_STATE__INVALID_PATH; + + /* + * Just because the filesystem has a S_IFSOCK type inode + * at `path`, doesn't mean it that there is a server listening. + * Ping it to be sure. + */ + state = ipc_client_try_connect(path, &options, &connection_test); + ipc_client_close_connection(connection_test); + + return state; +} + +/* + * Retry frequency when trying to connect to a server. + * + * This value should be short enough that we don't seriously delay our + * caller, but not fast enough that our spinning puts pressure on the + * system. + */ +#define WAIT_STEP_MS (50) + +/* + * Try to connect to the server. If the server is just starting up or + * is very busy, we may not get a connection the first time. + */ +static enum ipc_active_state connect_to_server( + const char *path, + int timeout_ms, + const struct ipc_client_connect_options *options, + int *pfd) +{ + int k; + + *pfd = -1; + + for (k = 0; k < timeout_ms; k += WAIT_STEP_MS) { + int fd = unix_stream_connect(path, options->uds_disallow_chdir); + + if (fd != -1) { + *pfd = fd; + return IPC_STATE__LISTENING; + } + + if (errno == ENOENT) { + if (!options->wait_if_not_found) + return IPC_STATE__PATH_NOT_FOUND; + + goto sleep_and_try_again; + } + + if (errno == ETIMEDOUT) { + if (!options->wait_if_busy) + return IPC_STATE__NOT_LISTENING; + + goto sleep_and_try_again; + } + + if (errno == ECONNREFUSED) { + if (!options->wait_if_busy) + return IPC_STATE__NOT_LISTENING; + + goto sleep_and_try_again; + } + + return IPC_STATE__OTHER_ERROR; + + sleep_and_try_again: + sleep_millisec(WAIT_STEP_MS); + } + + return IPC_STATE__NOT_LISTENING; +} + +/* + * The total amount of time that we are willing to wait when trying to + * connect to a server. + * + * When the server is first started, it might take a little while for + * it to become ready to service requests. Likewise, the server may + * be very (temporarily) busy and not respond to our connections. + * + * We should gracefully and silently handle those conditions and try + * again for a reasonable time period. + * + * The value chosen here should be long enough for the server + * to reliably heal from the above conditions. + */ +#define MY_CONNECTION_TIMEOUT_MS (1000) + +enum ipc_active_state ipc_client_try_connect( + const char *path, + const struct ipc_client_connect_options *options, + struct ipc_client_connection **p_connection) +{ + enum ipc_active_state state = IPC_STATE__OTHER_ERROR; + int fd = -1; + + *p_connection = NULL; + + trace2_region_enter("ipc-client", "try-connect", NULL); + trace2_data_string("ipc-client", NULL, "try-connect/path", path); + + state = connect_to_server(path, MY_CONNECTION_TIMEOUT_MS, + options, &fd); + + trace2_data_intmax("ipc-client", NULL, "try-connect/state", + (intmax_t)state); + trace2_region_leave("ipc-client", "try-connect", NULL); + + if (state == IPC_STATE__LISTENING) { + (*p_connection) = xcalloc(1, sizeof(struct ipc_client_connection)); + (*p_connection)->fd = fd; + } + + return state; +} + +void ipc_client_close_connection(struct ipc_client_connection *connection) +{ + if (!connection) + return; + + if (connection->fd != -1) + close(connection->fd); + + free(connection); +} + +int ipc_client_send_command_to_connection( + struct ipc_client_connection *connection, + const char *message, struct strbuf *answer) +{ + int ret = 0; + + strbuf_setlen(answer, 0); + + trace2_region_enter("ipc-client", "send-command", NULL); + + if (write_packetized_from_buf_no_flush(message, strlen(message), + connection->fd) < 0 || + packet_flush_gently(connection->fd) < 0) { + ret = error(_("could not send IPC command")); + goto done; + } + + if (read_packetized_to_strbuf( + connection->fd, answer, + PACKET_READ_GENTLE_ON_EOF | PACKET_READ_GENTLE_ON_READ_ERROR) < 0) { + ret = error(_("could not read IPC response")); + goto done; + } + +done: + trace2_region_leave("ipc-client", "send-command", NULL); + return ret; +} + +int ipc_client_send_command(const char *path, + const struct ipc_client_connect_options *options, + const char *message, struct strbuf *answer) +{ + int ret = -1; + enum ipc_active_state state; + struct ipc_client_connection *connection = NULL; + + state = ipc_client_try_connect(path, options, &connection); + + if (state != IPC_STATE__LISTENING) + return ret; + + ret = ipc_client_send_command_to_connection(connection, message, answer); + + ipc_client_close_connection(connection); + + return ret; +} + +static int set_socket_blocking_flag(int fd, int make_nonblocking) +{ + int flags; + + flags = fcntl(fd, F_GETFL, NULL); + + if (flags < 0) + return -1; + + if (make_nonblocking) + flags |= O_NONBLOCK; + else + flags &= ~O_NONBLOCK; + + return fcntl(fd, F_SETFL, flags); +} + +/* + * Magic numbers used to annotate callback instance data. + * These are used to help guard against accidentally passing the + * wrong instance data across multiple levels of callbacks (which + * is easy to do if there are `void*` arguments). + */ +enum magic { + MAGIC_SERVER_REPLY_DATA, + MAGIC_WORKER_THREAD_DATA, + MAGIC_ACCEPT_THREAD_DATA, + MAGIC_SERVER_DATA, +}; + +struct ipc_server_reply_data { + enum magic magic; + int fd; + struct ipc_worker_thread_data *worker_thread_data; +}; + +struct ipc_worker_thread_data { + enum magic magic; + struct ipc_worker_thread_data *next_thread; + struct ipc_server_data *server_data; + pthread_t pthread_id; +}; + +struct ipc_accept_thread_data { + enum magic magic; + struct ipc_server_data *server_data; + + struct unix_ss_socket *server_socket; + + int fd_send_shutdown; + int fd_wait_shutdown; + pthread_t pthread_id; +}; + +/* + * With unix-sockets, the conceptual "ipc-server" is implemented as a single + * controller "accept-thread" thread and a pool of "worker-thread" threads. + * The former does the usual `accept()` loop and dispatches connections + * to an idle worker thread. The worker threads wait in an idle loop for + * a new connection, communicate with the client and relay data to/from + * the `application_cb` and then wait for another connection from the + * server thread. This avoids the overhead of constantly creating and + * destroying threads. + */ +struct ipc_server_data { + enum magic magic; + ipc_server_application_cb *application_cb; + void *application_data; + struct strbuf buf_path; + + struct ipc_accept_thread_data *accept_thread; + struct ipc_worker_thread_data *worker_thread_list; + + pthread_mutex_t work_available_mutex; + pthread_cond_t work_available_cond; + + /* + * Accepted but not yet processed client connections are kept + * in a circular buffer FIFO. The queue is empty when the + * positions are equal. + */ + int *fifo_fds; + int queue_size; + int back_pos; + int front_pos; + + int shutdown_requested; + int is_stopped; +}; + +/* + * Remove and return the oldest queued connection. + * + * Returns -1 if empty. + */ +static int fifo_dequeue(struct ipc_server_data *server_data) +{ + /* ASSERT holding mutex */ + + int fd; + + if (server_data->back_pos == server_data->front_pos) + return -1; + + fd = server_data->fifo_fds[server_data->front_pos]; + server_data->fifo_fds[server_data->front_pos] = -1; + + server_data->front_pos++; + if (server_data->front_pos == server_data->queue_size) + server_data->front_pos = 0; + + return fd; +} + +/* + * Push a new fd onto the back of the queue. + * + * Drop it and return -1 if queue is already full. + */ +static int fifo_enqueue(struct ipc_server_data *server_data, int fd) +{ + /* ASSERT holding mutex */ + + int next_back_pos; + + next_back_pos = server_data->back_pos + 1; + if (next_back_pos == server_data->queue_size) + next_back_pos = 0; + + if (next_back_pos == server_data->front_pos) { + /* Queue is full. Just drop it. */ + close(fd); + return -1; + } + + server_data->fifo_fds[server_data->back_pos] = fd; + server_data->back_pos = next_back_pos; + + return fd; +} + +/* + * Wait for a connection to be queued to the FIFO and return it. + * + * Returns -1 if someone has already requested a shutdown. + */ +static int worker_thread__wait_for_connection( + struct ipc_worker_thread_data *worker_thread_data) +{ + /* ASSERT NOT holding mutex */ + + struct ipc_server_data *server_data = worker_thread_data->server_data; + int fd = -1; + + pthread_mutex_lock(&server_data->work_available_mutex); + for (;;) { + if (server_data->shutdown_requested) + break; + + fd = fifo_dequeue(server_data); + if (fd >= 0) + break; + + pthread_cond_wait(&server_data->work_available_cond, + &server_data->work_available_mutex); + } + pthread_mutex_unlock(&server_data->work_available_mutex); + + return fd; +} + +/* + * Forward declare our reply callback function so that any compiler + * errors are reported when we actually define the function (in addition + * to any errors reported when we try to pass this callback function as + * a parameter in a function call). The former are easier to understand. + */ +static ipc_server_reply_cb do_io_reply_callback; + +/* + * Relay application's response message to the client process. + * (We do not flush at this point because we allow the caller + * to chunk data to the client thru us.) + */ +static int do_io_reply_callback(struct ipc_server_reply_data *reply_data, + const char *response, size_t response_len) +{ + if (reply_data->magic != MAGIC_SERVER_REPLY_DATA) + BUG("reply_cb called with wrong instance data"); + + return write_packetized_from_buf_no_flush(response, response_len, + reply_data->fd); +} + +/* A randomly chosen value. */ +#define MY_WAIT_POLL_TIMEOUT_MS (10) + +/* + * If the client hangs up without sending any data on the wire, just + * quietly close the socket and ignore this client. + * + * This worker thread is committed to reading the IPC request data + * from the client at the other end of this fd. Wait here for the + * client to actually put something on the wire -- because if the + * client just does a ping (connect and hangup without sending any + * data), our use of the pkt-line read routines will spew an error + * message. + * + * Return -1 if the client hung up. + * Return 0 if data (possibly incomplete) is ready. + */ +static int worker_thread__wait_for_io_start( + struct ipc_worker_thread_data *worker_thread_data, + int fd) +{ + struct ipc_server_data *server_data = worker_thread_data->server_data; + struct pollfd pollfd[1]; + int result; + + for (;;) { + pollfd[0].fd = fd; + pollfd[0].events = POLLIN; + + result = poll(pollfd, 1, MY_WAIT_POLL_TIMEOUT_MS); + if (result < 0) { + if (errno == EINTR) + continue; + goto cleanup; + } + + if (result == 0) { + /* a timeout */ + + int in_shutdown; + + pthread_mutex_lock(&server_data->work_available_mutex); + in_shutdown = server_data->shutdown_requested; + pthread_mutex_unlock(&server_data->work_available_mutex); + + /* + * If a shutdown is already in progress and this + * client has not started talking yet, just drop it. + */ + if (in_shutdown) + goto cleanup; + continue; + } + + if (pollfd[0].revents & POLLHUP) + goto cleanup; + + if (pollfd[0].revents & POLLIN) + return 0; + + goto cleanup; + } + +cleanup: + close(fd); + return -1; +} + +/* + * Receive the request/command from the client and pass it to the + * registered request-callback. The request-callback will compose + * a response and call our reply-callback to send it to the client. + */ +static int worker_thread__do_io( + struct ipc_worker_thread_data *worker_thread_data, + int fd) +{ + /* ASSERT NOT holding lock */ + + struct strbuf buf = STRBUF_INIT; + struct ipc_server_reply_data reply_data; + int ret = 0; + + reply_data.magic = MAGIC_SERVER_REPLY_DATA; + reply_data.worker_thread_data = worker_thread_data; + + reply_data.fd = fd; + + ret = read_packetized_to_strbuf( + reply_data.fd, &buf, + PACKET_READ_GENTLE_ON_EOF | PACKET_READ_GENTLE_ON_READ_ERROR); + if (ret >= 0) { + ret = worker_thread_data->server_data->application_cb( + worker_thread_data->server_data->application_data, + buf.buf, do_io_reply_callback, &reply_data); + + packet_flush_gently(reply_data.fd); + } + else { + /* + * The client probably disconnected/shutdown before it + * could send a well-formed message. Ignore it. + */ + } + + strbuf_release(&buf); + close(reply_data.fd); + + return ret; +} + +/* + * Block SIGPIPE on the current thread (so that we get EPIPE from + * write() rather than an actual signal). + * + * Note that using sigchain_push() and _pop() to control SIGPIPE + * around our IO calls is not thread safe: + * [] It uses a global stack of handler frames. + * [] It uses ALLOC_GROW() to resize it. + * [] Finally, according to the `signal(2)` man-page: + * "The effects of `signal()` in a multithreaded process are unspecified." + */ +static void thread_block_sigpipe(sigset_t *old_set) +{ + sigset_t new_set; + + sigemptyset(&new_set); + sigaddset(&new_set, SIGPIPE); + + sigemptyset(old_set); + pthread_sigmask(SIG_BLOCK, &new_set, old_set); +} + +/* + * Thread proc for an IPC worker thread. It handles a series of + * connections from clients. It pulls the next fd from the queue + * processes it, and then waits for the next client. + * + * Block SIGPIPE in this worker thread for the life of the thread. + * This avoids stray (and sometimes delayed) SIGPIPE signals caused + * by client errors and/or when we are under extremely heavy IO load. + * + * This means that the application callback will have SIGPIPE blocked. + * The callback should not change it. + */ +static void *worker_thread_proc(void *_worker_thread_data) +{ + struct ipc_worker_thread_data *worker_thread_data = _worker_thread_data; + struct ipc_server_data *server_data = worker_thread_data->server_data; + sigset_t old_set; + int fd, io; + int ret; + + trace2_thread_start("ipc-worker"); + + thread_block_sigpipe(&old_set); + + for (;;) { + fd = worker_thread__wait_for_connection(worker_thread_data); + if (fd == -1) + break; /* in shutdown */ + + io = worker_thread__wait_for_io_start(worker_thread_data, fd); + if (io == -1) + continue; /* client hung up without sending anything */ + + ret = worker_thread__do_io(worker_thread_data, fd); + + if (ret == SIMPLE_IPC_QUIT) { + trace2_data_string("ipc-worker", NULL, "queue_stop_async", + "application_quit"); + /* + * The application layer is telling the ipc-server + * layer to shutdown. + * + * We DO NOT have a response to send to the client. + * + * Queue an async stop (to stop the other threads) and + * allow this worker thread to exit now (no sense waiting + * for the thread-pool shutdown signal). + * + * Other non-idle worker threads are allowed to finish + * responding to their current clients. + */ + ipc_server_stop_async(server_data); + break; + } + } + + trace2_thread_exit(); + return NULL; +} + +/* A randomly chosen value. */ +#define MY_ACCEPT_POLL_TIMEOUT_MS (60 * 1000) + +/* + * Accept a new client connection on our socket. This uses non-blocking + * IO so that we can also wait for shutdown requests on our socket-pair + * without actually spinning on a fast timeout. + */ +static int accept_thread__wait_for_connection( + struct ipc_accept_thread_data *accept_thread_data) +{ + struct pollfd pollfd[2]; + int result; + + for (;;) { + pollfd[0].fd = accept_thread_data->fd_wait_shutdown; + pollfd[0].events = POLLIN; + + pollfd[1].fd = accept_thread_data->server_socket->fd_socket; + pollfd[1].events = POLLIN; + + result = poll(pollfd, 2, MY_ACCEPT_POLL_TIMEOUT_MS); + if (result < 0) { + if (errno == EINTR) + continue; + return result; + } + + if (result == 0) { + /* a timeout */ + + /* + * If someone deletes or force-creates a new unix + * domain socket at our path, all future clients + * will be routed elsewhere and we silently starve. + * If that happens, just queue a shutdown. + */ + if (unix_ss_was_stolen( + accept_thread_data->server_socket)) { + trace2_data_string("ipc-accept", NULL, + "queue_stop_async", + "socket_stolen"); + ipc_server_stop_async( + accept_thread_data->server_data); + } + continue; + } + + if (pollfd[0].revents & POLLIN) { + /* shutdown message queued to socketpair */ + return -1; + } + + if (pollfd[1].revents & POLLIN) { + /* a connection is available on server_socket */ + + int client_fd = + accept(accept_thread_data->server_socket->fd_socket, + NULL, NULL); + if (client_fd >= 0) + return client_fd; + + /* + * An error here is unlikely -- it probably + * indicates that the connecting process has + * already dropped the connection. + */ + continue; + } + + BUG("unandled poll result errno=%d r[0]=%d r[1]=%d", + errno, pollfd[0].revents, pollfd[1].revents); + } +} + +/* + * Thread proc for the IPC server "accept thread". This waits for + * an incoming socket connection, appends it to the queue of available + * connections, and notifies a worker thread to process it. + * + * Block SIGPIPE in this thread for the life of the thread. This + * avoids any stray SIGPIPE signals when closing pipe fds under + * extremely heavy loads (such as when the fifo queue is full and we + * drop incomming connections). + */ +static void *accept_thread_proc(void *_accept_thread_data) +{ + struct ipc_accept_thread_data *accept_thread_data = _accept_thread_data; + struct ipc_server_data *server_data = accept_thread_data->server_data; + sigset_t old_set; + + trace2_thread_start("ipc-accept"); + + thread_block_sigpipe(&old_set); + + for (;;) { + int client_fd = accept_thread__wait_for_connection( + accept_thread_data); + + pthread_mutex_lock(&server_data->work_available_mutex); + if (server_data->shutdown_requested) { + pthread_mutex_unlock(&server_data->work_available_mutex); + if (client_fd >= 0) + close(client_fd); + break; + } + + if (client_fd < 0) { + /* ignore transient accept() errors */ + } + else { + fifo_enqueue(server_data, client_fd); + pthread_cond_broadcast(&server_data->work_available_cond); + } + pthread_mutex_unlock(&server_data->work_available_mutex); + } + + trace2_thread_exit(); + return NULL; +} + +/* + * We can't predict the connection arrival rate relative to the worker + * processing rate, therefore we allow the "accept-thread" to queue up + * a generous number of connections, since we'd rather have the client + * not unnecessarily timeout if we can avoid it. (The assumption is + * that this will be used for FSMonitor and a few second wait on a + * connection is better than having the client timeout and do the full + * computation itself.) + * + * The FIFO queue size is set to a multiple of the worker pool size. + * This value chosen at random. + */ +#define FIFO_SCALE (100) + +/* + * The backlog value for `listen(2)`. This doesn't need to huge, + * rather just large enough for our "accept-thread" to wake up and + * queue incoming connections onto the FIFO without the kernel + * dropping any. + * + * This value chosen at random. + */ +#define LISTEN_BACKLOG (50) + +static int create_listener_socket( + const char *path, + const struct ipc_server_opts *ipc_opts, + struct unix_ss_socket **new_server_socket) +{ + struct unix_ss_socket *server_socket = NULL; + struct unix_stream_listen_opts uslg_opts = UNIX_STREAM_LISTEN_OPTS_INIT; + int ret; + + uslg_opts.listen_backlog_size = LISTEN_BACKLOG; + uslg_opts.disallow_chdir = ipc_opts->uds_disallow_chdir; + + ret = unix_ss_create(path, &uslg_opts, -1, &server_socket); + if (ret) + return ret; + + if (set_socket_blocking_flag(server_socket->fd_socket, 1)) { + int saved_errno = errno; + unix_ss_free(server_socket); + errno = saved_errno; + return -1; + } + + *new_server_socket = server_socket; + + trace2_data_string("ipc-server", NULL, "listen-with-lock", path); + return 0; +} + +static int setup_listener_socket( + const char *path, + const struct ipc_server_opts *ipc_opts, + struct unix_ss_socket **new_server_socket) +{ + int ret, saved_errno; + + trace2_region_enter("ipc-server", "create-listener_socket", NULL); + + ret = create_listener_socket(path, ipc_opts, new_server_socket); + + saved_errno = errno; + trace2_region_leave("ipc-server", "create-listener_socket", NULL); + errno = saved_errno; + + return ret; +} + +/* + * Start IPC server in a pool of background threads. + */ +int ipc_server_run_async(struct ipc_server_data **returned_server_data, + const char *path, const struct ipc_server_opts *opts, + ipc_server_application_cb *application_cb, + void *application_data) +{ + struct unix_ss_socket *server_socket = NULL; + struct ipc_server_data *server_data; + int sv[2]; + int k; + int ret; + int nr_threads = opts->nr_threads; + + *returned_server_data = NULL; + + /* + * Create a socketpair and set sv[1] to non-blocking. This + * will used to send a shutdown message to the accept-thread + * and allows the accept-thread to wait on EITHER a client + * connection or a shutdown request without spinning. + */ + if (socketpair(AF_UNIX, SOCK_STREAM, 0, sv) < 0) + return -1; + + if (set_socket_blocking_flag(sv[1], 1)) { + int saved_errno = errno; + close(sv[0]); + close(sv[1]); + errno = saved_errno; + return -1; + } + + ret = setup_listener_socket(path, opts, &server_socket); + if (ret) { + int saved_errno = errno; + close(sv[0]); + close(sv[1]); + errno = saved_errno; + return ret; + } + + server_data = xcalloc(1, sizeof(*server_data)); + server_data->magic = MAGIC_SERVER_DATA; + server_data->application_cb = application_cb; + server_data->application_data = application_data; + strbuf_init(&server_data->buf_path, 0); + strbuf_addstr(&server_data->buf_path, path); + + if (nr_threads < 1) + nr_threads = 1; + + pthread_mutex_init(&server_data->work_available_mutex, NULL); + pthread_cond_init(&server_data->work_available_cond, NULL); + + server_data->queue_size = nr_threads * FIFO_SCALE; + CALLOC_ARRAY(server_data->fifo_fds, server_data->queue_size); + + server_data->accept_thread = + xcalloc(1, sizeof(*server_data->accept_thread)); + server_data->accept_thread->magic = MAGIC_ACCEPT_THREAD_DATA; + server_data->accept_thread->server_data = server_data; + server_data->accept_thread->server_socket = server_socket; + server_data->accept_thread->fd_send_shutdown = sv[0]; + server_data->accept_thread->fd_wait_shutdown = sv[1]; + + if (pthread_create(&server_data->accept_thread->pthread_id, NULL, + accept_thread_proc, server_data->accept_thread)) + die_errno(_("could not start accept_thread '%s'"), path); + + for (k = 0; k < nr_threads; k++) { + struct ipc_worker_thread_data *wtd; + + wtd = xcalloc(1, sizeof(*wtd)); + wtd->magic = MAGIC_WORKER_THREAD_DATA; + wtd->server_data = server_data; + + if (pthread_create(&wtd->pthread_id, NULL, worker_thread_proc, + wtd)) { + if (k == 0) + die(_("could not start worker[0] for '%s'"), + path); + /* + * Limp along with the thread pool that we have. + */ + break; + } + + wtd->next_thread = server_data->worker_thread_list; + server_data->worker_thread_list = wtd; + } + + *returned_server_data = server_data; + return 0; +} + +/* + * Gently tell the IPC server treads to shutdown. + * Can be run on any thread. + */ +int ipc_server_stop_async(struct ipc_server_data *server_data) +{ + /* ASSERT NOT holding mutex */ + + int fd; + + if (!server_data) + return 0; + + trace2_region_enter("ipc-server", "server-stop-async", NULL); + + pthread_mutex_lock(&server_data->work_available_mutex); + + server_data->shutdown_requested = 1; + + /* + * Write a byte to the shutdown socket pair to wake up the + * accept-thread. + */ + if (write(server_data->accept_thread->fd_send_shutdown, "Q", 1) < 0) + error_errno("could not write to fd_send_shutdown"); + + /* + * Drain the queue of existing connections. + */ + while ((fd = fifo_dequeue(server_data)) != -1) + close(fd); + + /* + * Gently tell worker threads to stop processing new connections + * and exit. (This does not abort in-process conversations.) + */ + pthread_cond_broadcast(&server_data->work_available_cond); + + pthread_mutex_unlock(&server_data->work_available_mutex); + + trace2_region_leave("ipc-server", "server-stop-async", NULL); + + return 0; +} + +/* + * Wait for all IPC server threads to stop. + */ +int ipc_server_await(struct ipc_server_data *server_data) +{ + pthread_join(server_data->accept_thread->pthread_id, NULL); + + if (!server_data->shutdown_requested) + BUG("ipc-server: accept-thread stopped for '%s'", + server_data->buf_path.buf); + + while (server_data->worker_thread_list) { + struct ipc_worker_thread_data *wtd = + server_data->worker_thread_list; + + pthread_join(wtd->pthread_id, NULL); + + server_data->worker_thread_list = wtd->next_thread; + free(wtd); + } + + server_data->is_stopped = 1; + + return 0; +} + +void ipc_server_free(struct ipc_server_data *server_data) +{ + struct ipc_accept_thread_data * accept_thread_data; + + if (!server_data) + return; + + if (!server_data->is_stopped) + BUG("cannot free ipc-server while running for '%s'", + server_data->buf_path.buf); + + accept_thread_data = server_data->accept_thread; + if (accept_thread_data) { + unix_ss_free(accept_thread_data->server_socket); + + if (accept_thread_data->fd_send_shutdown != -1) + close(accept_thread_data->fd_send_shutdown); + if (accept_thread_data->fd_wait_shutdown != -1) + close(accept_thread_data->fd_wait_shutdown); + + free(server_data->accept_thread); + } + + while (server_data->worker_thread_list) { + struct ipc_worker_thread_data *wtd = + server_data->worker_thread_list; + + server_data->worker_thread_list = wtd->next_thread; + free(wtd); + } + + pthread_cond_destroy(&server_data->work_available_cond); + pthread_mutex_destroy(&server_data->work_available_mutex); + + strbuf_release(&server_data->buf_path); + + free(server_data->fifo_fds); + free(server_data); +} diff --git a/compat/simple-ipc/ipc-win32.c b/compat/simple-ipc/ipc-win32.c new file mode 100644 index 0000000..8f89c02 --- /dev/null +++ b/compat/simple-ipc/ipc-win32.c @@ -0,0 +1,751 @@ +#include "cache.h" +#include "simple-ipc.h" +#include "strbuf.h" +#include "pkt-line.h" +#include "thread-utils.h" + +#ifndef GIT_WINDOWS_NATIVE +#error This file can only be compiled on Windows +#endif + +static int initialize_pipe_name(const char *path, wchar_t *wpath, size_t alloc) +{ + int off = 0; + struct strbuf realpath = STRBUF_INIT; + + if (!strbuf_realpath(&realpath, path, 0)) + return -1; + + off = swprintf(wpath, alloc, L"\\\\.\\pipe\\"); + if (xutftowcs(wpath + off, realpath.buf, alloc - off) < 0) + return -1; + + /* Handle drive prefix */ + if (wpath[off] && wpath[off + 1] == L':') { + wpath[off + 1] = L'_'; + off += 2; + } + + for (; wpath[off]; off++) + if (wpath[off] == L'/') + wpath[off] = L'\\'; + + strbuf_release(&realpath); + return 0; +} + +static enum ipc_active_state get_active_state(wchar_t *pipe_path) +{ + if (WaitNamedPipeW(pipe_path, NMPWAIT_USE_DEFAULT_WAIT)) + return IPC_STATE__LISTENING; + + if (GetLastError() == ERROR_SEM_TIMEOUT) + return IPC_STATE__NOT_LISTENING; + + if (GetLastError() == ERROR_FILE_NOT_FOUND) + return IPC_STATE__PATH_NOT_FOUND; + + return IPC_STATE__OTHER_ERROR; +} + +enum ipc_active_state ipc_get_active_state(const char *path) +{ + wchar_t pipe_path[MAX_PATH]; + + if (initialize_pipe_name(path, pipe_path, ARRAY_SIZE(pipe_path)) < 0) + return IPC_STATE__INVALID_PATH; + + return get_active_state(pipe_path); +} + +#define WAIT_STEP_MS (50) + +static enum ipc_active_state connect_to_server( + const wchar_t *wpath, + DWORD timeout_ms, + const struct ipc_client_connect_options *options, + int *pfd) +{ + DWORD t_start_ms, t_waited_ms; + DWORD step_ms; + HANDLE hPipe = INVALID_HANDLE_VALUE; + DWORD mode = PIPE_READMODE_BYTE; + DWORD gle; + + *pfd = -1; + + for (;;) { + hPipe = CreateFileW(wpath, GENERIC_READ | GENERIC_WRITE, + 0, NULL, OPEN_EXISTING, 0, NULL); + if (hPipe != INVALID_HANDLE_VALUE) + break; + + gle = GetLastError(); + + switch (gle) { + case ERROR_FILE_NOT_FOUND: + if (!options->wait_if_not_found) + return IPC_STATE__PATH_NOT_FOUND; + if (!timeout_ms) + return IPC_STATE__PATH_NOT_FOUND; + + step_ms = (timeout_ms < WAIT_STEP_MS) ? + timeout_ms : WAIT_STEP_MS; + sleep_millisec(step_ms); + + timeout_ms -= step_ms; + break; /* try again */ + + case ERROR_PIPE_BUSY: + if (!options->wait_if_busy) + return IPC_STATE__NOT_LISTENING; + if (!timeout_ms) + return IPC_STATE__NOT_LISTENING; + + t_start_ms = (DWORD)(getnanotime() / 1000000); + + if (!WaitNamedPipeW(wpath, timeout_ms)) { + if (GetLastError() == ERROR_SEM_TIMEOUT) + return IPC_STATE__NOT_LISTENING; + + return IPC_STATE__OTHER_ERROR; + } + + /* + * A pipe server instance became available. + * Race other client processes to connect to + * it. + * + * But first decrement our overall timeout so + * that we don't starve if we keep losing the + * race. But also guard against special + * NPMWAIT_ values (0 and -1). + */ + t_waited_ms = (DWORD)(getnanotime() / 1000000) - t_start_ms; + if (t_waited_ms < timeout_ms) + timeout_ms -= t_waited_ms; + else + timeout_ms = 1; + break; /* try again */ + + default: + return IPC_STATE__OTHER_ERROR; + } + } + + if (!SetNamedPipeHandleState(hPipe, &mode, NULL, NULL)) { + CloseHandle(hPipe); + return IPC_STATE__OTHER_ERROR; + } + + *pfd = _open_osfhandle((intptr_t)hPipe, O_RDWR|O_BINARY); + if (*pfd < 0) { + CloseHandle(hPipe); + return IPC_STATE__OTHER_ERROR; + } + + /* fd now owns hPipe */ + + return IPC_STATE__LISTENING; +} + +/* + * The default connection timeout for Windows clients. + * + * This is not currently part of the ipc_ API (nor the config settings) + * because of differences between Windows and other platforms. + * + * This value was chosen at random. + */ +#define WINDOWS_CONNECTION_TIMEOUT_MS (30000) + +enum ipc_active_state ipc_client_try_connect( + const char *path, + const struct ipc_client_connect_options *options, + struct ipc_client_connection **p_connection) +{ + wchar_t wpath[MAX_PATH]; + enum ipc_active_state state = IPC_STATE__OTHER_ERROR; + int fd = -1; + + *p_connection = NULL; + + trace2_region_enter("ipc-client", "try-connect", NULL); + trace2_data_string("ipc-client", NULL, "try-connect/path", path); + + if (initialize_pipe_name(path, wpath, ARRAY_SIZE(wpath)) < 0) + state = IPC_STATE__INVALID_PATH; + else + state = connect_to_server(wpath, WINDOWS_CONNECTION_TIMEOUT_MS, + options, &fd); + + trace2_data_intmax("ipc-client", NULL, "try-connect/state", + (intmax_t)state); + trace2_region_leave("ipc-client", "try-connect", NULL); + + if (state == IPC_STATE__LISTENING) { + (*p_connection) = xcalloc(1, sizeof(struct ipc_client_connection)); + (*p_connection)->fd = fd; + } + + return state; +} + +void ipc_client_close_connection(struct ipc_client_connection *connection) +{ + if (!connection) + return; + + if (connection->fd != -1) + close(connection->fd); + + free(connection); +} + +int ipc_client_send_command_to_connection( + struct ipc_client_connection *connection, + const char *message, struct strbuf *answer) +{ + int ret = 0; + + strbuf_setlen(answer, 0); + + trace2_region_enter("ipc-client", "send-command", NULL); + + if (write_packetized_from_buf_no_flush(message, strlen(message), + connection->fd) < 0 || + packet_flush_gently(connection->fd) < 0) { + ret = error(_("could not send IPC command")); + goto done; + } + + FlushFileBuffers((HANDLE)_get_osfhandle(connection->fd)); + + if (read_packetized_to_strbuf( + connection->fd, answer, + PACKET_READ_GENTLE_ON_EOF | PACKET_READ_GENTLE_ON_READ_ERROR) < 0) { + ret = error(_("could not read IPC response")); + goto done; + } + +done: + trace2_region_leave("ipc-client", "send-command", NULL); + return ret; +} + +int ipc_client_send_command(const char *path, + const struct ipc_client_connect_options *options, + const char *message, struct strbuf *response) +{ + int ret = -1; + enum ipc_active_state state; + struct ipc_client_connection *connection = NULL; + + state = ipc_client_try_connect(path, options, &connection); + + if (state != IPC_STATE__LISTENING) + return ret; + + ret = ipc_client_send_command_to_connection(connection, message, response); + + ipc_client_close_connection(connection); + + return ret; +} + +/* + * Duplicate the given pipe handle and wrap it in a file descriptor so + * that we can use pkt-line on it. + */ +static int dup_fd_from_pipe(const HANDLE pipe) +{ + HANDLE process = GetCurrentProcess(); + HANDLE handle; + int fd; + + if (!DuplicateHandle(process, pipe, process, &handle, 0, FALSE, + DUPLICATE_SAME_ACCESS)) { + errno = err_win_to_posix(GetLastError()); + return -1; + } + + fd = _open_osfhandle((intptr_t)handle, O_RDWR|O_BINARY); + if (fd < 0) { + errno = err_win_to_posix(GetLastError()); + CloseHandle(handle); + return -1; + } + + /* + * `handle` is now owned by `fd` and will be automatically closed + * when the descriptor is closed. + */ + + return fd; +} + +/* + * Magic numbers used to annotate callback instance data. + * These are used to help guard against accidentally passing the + * wrong instance data across multiple levels of callbacks (which + * is easy to do if there are `void*` arguments). + */ +enum magic { + MAGIC_SERVER_REPLY_DATA, + MAGIC_SERVER_THREAD_DATA, + MAGIC_SERVER_DATA, +}; + +struct ipc_server_reply_data { + enum magic magic; + int fd; + struct ipc_server_thread_data *server_thread_data; +}; + +struct ipc_server_thread_data { + enum magic magic; + struct ipc_server_thread_data *next_thread; + struct ipc_server_data *server_data; + pthread_t pthread_id; + HANDLE hPipe; +}; + +/* + * On Windows, the conceptual "ipc-server" is implemented as a pool of + * n idential/peer "server-thread" threads. That is, there is no + * hierarchy of threads; and therefore no controller thread managing + * the pool. Each thread has an independent handle to the named pipe, + * receives incoming connections, processes the client, and re-uses + * the pipe for the next client connection. + * + * Therefore, the "ipc-server" only needs to maintain a list of the + * spawned threads for eventual "join" purposes. + * + * A single "stop-event" is visible to all of the server threads to + * tell them to shutdown (when idle). + */ +struct ipc_server_data { + enum magic magic; + ipc_server_application_cb *application_cb; + void *application_data; + struct strbuf buf_path; + wchar_t wpath[MAX_PATH]; + + HANDLE hEventStopRequested; + struct ipc_server_thread_data *thread_list; + int is_stopped; +}; + +enum connect_result { + CR_CONNECTED = 0, + CR_CONNECT_PENDING, + CR_CONNECT_ERROR, + CR_WAIT_ERROR, + CR_SHUTDOWN, +}; + +static enum connect_result queue_overlapped_connect( + struct ipc_server_thread_data *server_thread_data, + OVERLAPPED *lpo) +{ + if (ConnectNamedPipe(server_thread_data->hPipe, lpo)) + goto failed; + + switch (GetLastError()) { + case ERROR_IO_PENDING: + return CR_CONNECT_PENDING; + + case ERROR_PIPE_CONNECTED: + SetEvent(lpo->hEvent); + return CR_CONNECTED; + + default: + break; + } + +failed: + error(_("ConnectNamedPipe failed for '%s' (%lu)"), + server_thread_data->server_data->buf_path.buf, + GetLastError()); + return CR_CONNECT_ERROR; +} + +/* + * Use Windows Overlapped IO to wait for a connection or for our event + * to be signalled. + */ +static enum connect_result wait_for_connection( + struct ipc_server_thread_data *server_thread_data, + OVERLAPPED *lpo) +{ + enum connect_result r; + HANDLE waitHandles[2]; + DWORD dwWaitResult; + + r = queue_overlapped_connect(server_thread_data, lpo); + if (r != CR_CONNECT_PENDING) + return r; + + waitHandles[0] = server_thread_data->server_data->hEventStopRequested; + waitHandles[1] = lpo->hEvent; + + dwWaitResult = WaitForMultipleObjects(2, waitHandles, FALSE, INFINITE); + switch (dwWaitResult) { + case WAIT_OBJECT_0 + 0: + return CR_SHUTDOWN; + + case WAIT_OBJECT_0 + 1: + ResetEvent(lpo->hEvent); + return CR_CONNECTED; + + default: + return CR_WAIT_ERROR; + } +} + +/* + * Forward declare our reply callback function so that any compiler + * errors are reported when we actually define the function (in addition + * to any errors reported when we try to pass this callback function as + * a parameter in a function call). The former are easier to understand. + */ +static ipc_server_reply_cb do_io_reply_callback; + +/* + * Relay application's response message to the client process. + * (We do not flush at this point because we allow the caller + * to chunk data to the client thru us.) + */ +static int do_io_reply_callback(struct ipc_server_reply_data *reply_data, + const char *response, size_t response_len) +{ + if (reply_data->magic != MAGIC_SERVER_REPLY_DATA) + BUG("reply_cb called with wrong instance data"); + + return write_packetized_from_buf_no_flush(response, response_len, + reply_data->fd); +} + +/* + * Receive the request/command from the client and pass it to the + * registered request-callback. The request-callback will compose + * a response and call our reply-callback to send it to the client. + * + * Simple-IPC only contains one round trip, so we flush and close + * here after the response. + */ +static int do_io(struct ipc_server_thread_data *server_thread_data) +{ + struct strbuf buf = STRBUF_INIT; + struct ipc_server_reply_data reply_data; + int ret = 0; + + reply_data.magic = MAGIC_SERVER_REPLY_DATA; + reply_data.server_thread_data = server_thread_data; + + reply_data.fd = dup_fd_from_pipe(server_thread_data->hPipe); + if (reply_data.fd < 0) + return error(_("could not create fd from pipe for '%s'"), + server_thread_data->server_data->buf_path.buf); + + ret = read_packetized_to_strbuf( + reply_data.fd, &buf, + PACKET_READ_GENTLE_ON_EOF | PACKET_READ_GENTLE_ON_READ_ERROR); + if (ret >= 0) { + ret = server_thread_data->server_data->application_cb( + server_thread_data->server_data->application_data, + buf.buf, do_io_reply_callback, &reply_data); + + packet_flush_gently(reply_data.fd); + + FlushFileBuffers((HANDLE)_get_osfhandle((reply_data.fd))); + } + else { + /* + * The client probably disconnected/shutdown before it + * could send a well-formed message. Ignore it. + */ + } + + strbuf_release(&buf); + close(reply_data.fd); + + return ret; +} + +/* + * Handle IPC request and response with this connected client. And reset + * the pipe to prepare for the next client. + */ +static int use_connection(struct ipc_server_thread_data *server_thread_data) +{ + int ret; + + ret = do_io(server_thread_data); + + FlushFileBuffers(server_thread_data->hPipe); + DisconnectNamedPipe(server_thread_data->hPipe); + + return ret; +} + +/* + * Thread proc for an IPC server worker thread. It handles a series of + * connections from clients. It cleans and reuses the hPipe between each + * client. + */ +static void *server_thread_proc(void *_server_thread_data) +{ + struct ipc_server_thread_data *server_thread_data = _server_thread_data; + HANDLE hEventConnected = INVALID_HANDLE_VALUE; + OVERLAPPED oConnect; + enum connect_result cr; + int ret; + + assert(server_thread_data->hPipe != INVALID_HANDLE_VALUE); + + trace2_thread_start("ipc-server"); + trace2_data_string("ipc-server", NULL, "pipe", + server_thread_data->server_data->buf_path.buf); + + hEventConnected = CreateEventW(NULL, TRUE, FALSE, NULL); + + memset(&oConnect, 0, sizeof(oConnect)); + oConnect.hEvent = hEventConnected; + + for (;;) { + cr = wait_for_connection(server_thread_data, &oConnect); + + switch (cr) { + case CR_SHUTDOWN: + goto finished; + + case CR_CONNECTED: + ret = use_connection(server_thread_data); + if (ret == SIMPLE_IPC_QUIT) { + ipc_server_stop_async( + server_thread_data->server_data); + goto finished; + } + if (ret > 0) { + /* + * Ignore (transient) IO errors with this + * client and reset for the next client. + */ + } + break; + + case CR_CONNECT_PENDING: + /* By construction, this should not happen. */ + BUG("ipc-server[%s]: unexpeced CR_CONNECT_PENDING", + server_thread_data->server_data->buf_path.buf); + + case CR_CONNECT_ERROR: + case CR_WAIT_ERROR: + /* + * Ignore these theoretical errors. + */ + DisconnectNamedPipe(server_thread_data->hPipe); + break; + + default: + BUG("unandled case after wait_for_connection"); + } + } + +finished: + CloseHandle(server_thread_data->hPipe); + CloseHandle(hEventConnected); + + trace2_thread_exit(); + return NULL; +} + +static HANDLE create_new_pipe(wchar_t *wpath, int is_first) +{ + HANDLE hPipe; + DWORD dwOpenMode, dwPipeMode; + LPSECURITY_ATTRIBUTES lpsa = NULL; + + dwOpenMode = PIPE_ACCESS_INBOUND | PIPE_ACCESS_OUTBOUND | + FILE_FLAG_OVERLAPPED; + + dwPipeMode = PIPE_TYPE_MESSAGE | PIPE_READMODE_BYTE | PIPE_WAIT | + PIPE_REJECT_REMOTE_CLIENTS; + + if (is_first) { + dwOpenMode |= FILE_FLAG_FIRST_PIPE_INSTANCE; + + /* + * On Windows, the first server pipe instance gets to + * set the ACL / Security Attributes on the named + * pipe; subsequent instances inherit and cannot + * change them. + * + * TODO Should we allow the application layer to + * specify security attributes, such as `LocalService` + * or `LocalSystem`, when we create the named pipe? + * This question is probably not important when the + * daemon is started by a foreground user process and + * only needs to talk to the current user, but may be + * if the daemon is run via the Control Panel as a + * System Service. + */ + } + + hPipe = CreateNamedPipeW(wpath, dwOpenMode, dwPipeMode, + PIPE_UNLIMITED_INSTANCES, 1024, 1024, 0, lpsa); + + return hPipe; +} + +int ipc_server_run_async(struct ipc_server_data **returned_server_data, + const char *path, const struct ipc_server_opts *opts, + ipc_server_application_cb *application_cb, + void *application_data) +{ + struct ipc_server_data *server_data; + wchar_t wpath[MAX_PATH]; + HANDLE hPipeFirst = INVALID_HANDLE_VALUE; + int k; + int ret = 0; + int nr_threads = opts->nr_threads; + + *returned_server_data = NULL; + + ret = initialize_pipe_name(path, wpath, ARRAY_SIZE(wpath)); + if (ret < 0) { + errno = EINVAL; + return -1; + } + + hPipeFirst = create_new_pipe(wpath, 1); + if (hPipeFirst == INVALID_HANDLE_VALUE) { + errno = EADDRINUSE; + return -2; + } + + server_data = xcalloc(1, sizeof(*server_data)); + server_data->magic = MAGIC_SERVER_DATA; + server_data->application_cb = application_cb; + server_data->application_data = application_data; + server_data->hEventStopRequested = CreateEvent(NULL, TRUE, FALSE, NULL); + strbuf_init(&server_data->buf_path, 0); + strbuf_addstr(&server_data->buf_path, path); + wcscpy(server_data->wpath, wpath); + + if (nr_threads < 1) + nr_threads = 1; + + for (k = 0; k < nr_threads; k++) { + struct ipc_server_thread_data *std; + + std = xcalloc(1, sizeof(*std)); + std->magic = MAGIC_SERVER_THREAD_DATA; + std->server_data = server_data; + std->hPipe = INVALID_HANDLE_VALUE; + + std->hPipe = (k == 0) + ? hPipeFirst + : create_new_pipe(server_data->wpath, 0); + + if (std->hPipe == INVALID_HANDLE_VALUE) { + /* + * If we've reached a pipe instance limit for + * this path, just use fewer threads. + */ + free(std); + break; + } + + if (pthread_create(&std->pthread_id, NULL, + server_thread_proc, std)) { + /* + * Likewise, if we're out of threads, just use + * fewer threads than requested. + * + * However, we just give up if we can't even get + * one thread. This should not happen. + */ + if (k == 0) + die(_("could not start thread[0] for '%s'"), + path); + + CloseHandle(std->hPipe); + free(std); + break; + } + + std->next_thread = server_data->thread_list; + server_data->thread_list = std; + } + + *returned_server_data = server_data; + return 0; +} + +int ipc_server_stop_async(struct ipc_server_data *server_data) +{ + if (!server_data) + return 0; + + /* + * Gently tell all of the ipc_server threads to shutdown. + * This will be seen the next time they are idle (and waiting + * for a connection). + * + * We DO NOT attempt to force them to drop an active connection. + */ + SetEvent(server_data->hEventStopRequested); + return 0; +} + +int ipc_server_await(struct ipc_server_data *server_data) +{ + DWORD dwWaitResult; + + if (!server_data) + return 0; + + dwWaitResult = WaitForSingleObject(server_data->hEventStopRequested, INFINITE); + if (dwWaitResult != WAIT_OBJECT_0) + return error(_("wait for hEvent failed for '%s'"), + server_data->buf_path.buf); + + while (server_data->thread_list) { + struct ipc_server_thread_data *std = server_data->thread_list; + + pthread_join(std->pthread_id, NULL); + + server_data->thread_list = std->next_thread; + free(std); + } + + server_data->is_stopped = 1; + + return 0; +} + +void ipc_server_free(struct ipc_server_data *server_data) +{ + if (!server_data) + return; + + if (!server_data->is_stopped) + BUG("cannot free ipc-server while running for '%s'", + server_data->buf_path.buf); + + strbuf_release(&server_data->buf_path); + + if (server_data->hEventStopRequested != INVALID_HANDLE_VALUE) + CloseHandle(server_data->hEventStopRequested); + + while (server_data->thread_list) { + struct ipc_server_thread_data *std = server_data->thread_list; + + server_data->thread_list = std->next_thread; + free(std); + } + + free(server_data); +} diff --git a/config.mak.uname b/config.mak.uname index d204c20..cb443b4 100644 --- a/config.mak.uname +++ b/config.mak.uname @@ -424,6 +424,7 @@ ifeq ($(uname_S),Windows) RUNTIME_PREFIX = YesPlease HAVE_WPGMPTR = YesWeDo NO_ST_BLOCKS_IN_STRUCT_STAT = YesPlease + USE_WIN32_IPC = YesPlease USE_WIN32_MMAP = YesPlease MMAP_PREVENTS_DELETE = UnfortunatelyYes # USE_NED_ALLOCATOR = YesPlease @@ -600,6 +601,7 @@ ifneq (,$(findstring MINGW,$(uname_S))) RUNTIME_PREFIX = YesPlease HAVE_WPGMPTR = YesWeDo NO_ST_BLOCKS_IN_STRUCT_STAT = YesPlease + USE_WIN32_IPC = YesPlease USE_WIN32_MMAP = YesPlease MMAP_PREVENTS_DELETE = UnfortunatelyYes USE_NED_ALLOCATOR = YesPlease diff --git a/contrib/buildsystems/CMakeLists.txt b/contrib/buildsystems/CMakeLists.txt index ac3dbc0..75ed198 100644 --- a/contrib/buildsystems/CMakeLists.txt +++ b/contrib/buildsystems/CMakeLists.txt @@ -58,6 +58,10 @@ if(WIN32) # In the vcpkg edition, we need this to be able to link to libcurl set(CURL_NO_CURL_CMAKE ON) + + # Copy the necessary vcpkg DLLs (like iconv) to the install dir + set(X_VCPKG_APPLOCAL_DEPS_INSTALL ON) + set(CMAKE_TOOLCHAIN_FILE ${VCPKG_DIR}/scripts/buildsystems/vcpkg.cmake CACHE STRING "Vcpkg toolchain file") endif() find_program(SH_EXE sh PATHS "C:/Program Files/Git/bin") @@ -243,7 +247,13 @@ if(CMAKE_SYSTEM_NAME STREQUAL "Windows") elseif(CMAKE_SYSTEM_NAME STREQUAL "Linux") add_compile_definitions(PROCFS_EXECUTABLE_PATH="/proc/self/exe" HAVE_DEV_TTY ) - list(APPEND compat_SOURCES unix-socket.c) + list(APPEND compat_SOURCES unix-socket.c unix-stream-server.c) +endif() + +if(CMAKE_SYSTEM_NAME STREQUAL "Windows") + list(APPEND compat_SOURCES compat/simple-ipc/ipc-shared.c compat/simple-ipc/ipc-win32.c) +else() + list(APPEND compat_SOURCES compat/simple-ipc/ipc-shared.c compat/simple-ipc/ipc-unix-socket.c) endif() set(EXE_EXTENSION ${CMAKE_EXECUTABLE_SUFFIX}) @@ -685,13 +695,17 @@ endif() parse_makefile_for_executables(git_builtin_extra "BUILT_INS") +option(SKIP_DASHED_BUILT_INS "Skip hardlinking the dashed versions of the built-ins") + #Creating hardlinks +if(NOT SKIP_DASHED_BUILT_INS) foreach(s ${git_SOURCES} ${git_builtin_extra}) string(REPLACE "${CMAKE_SOURCE_DIR}/builtin/" "" s ${s}) string(REPLACE ".c" "" s ${s}) file(APPEND ${CMAKE_BINARY_DIR}/CreateLinks.cmake "file(CREATE_LINK git${EXE_EXTENSION} git-${s}${EXE_EXTENSION})\n") list(APPEND git_links ${CMAKE_BINARY_DIR}/git-${s}${EXE_EXTENSION}) endforeach() +endif() if(CURL_FOUND) set(remote_exes @@ -807,15 +821,19 @@ list(TRANSFORM git_shell_scripts PREPEND "${CMAKE_BINARY_DIR}/") list(TRANSFORM git_perl_scripts PREPEND "${CMAKE_BINARY_DIR}/") #install -install(TARGETS git git-shell +foreach(program ${PROGRAMS_BUILT}) +if(program STREQUAL "git" OR program STREQUAL "git-shell") +install(TARGETS ${program} RUNTIME DESTINATION bin) +else() +install(TARGETS ${program} + RUNTIME DESTINATION libexec/git-core) +endif() +endforeach() + install(PROGRAMS ${CMAKE_BINARY_DIR}/git-cvsserver DESTINATION bin) -list(REMOVE_ITEM PROGRAMS_BUILT git git-shell) -install(TARGETS ${PROGRAMS_BUILT} - RUNTIME DESTINATION libexec/git-core) - set(bin_links git-receive-pack git-upload-archive git-upload-pack) @@ -828,12 +846,12 @@ install(CODE "file(CREATE_LINK ${CMAKE_INSTALL_PREFIX}/bin/git-shell${EXE_EXTENS foreach(b ${git_links}) string(REPLACE "${CMAKE_BINARY_DIR}" "" b ${b}) - install(CODE "file(CREATE_LINK ${CMAKE_INSTALL_PREFIX}/bin/git${EXE_EXTENSION} ${CMAKE_INSTALL_PREFIX}/libexec/git-core/${b}${EXE_EXTENSION})") + install(CODE "file(CREATE_LINK ${CMAKE_INSTALL_PREFIX}/bin/git${EXE_EXTENSION} ${CMAKE_INSTALL_PREFIX}/libexec/git-core/${b})") endforeach() foreach(b ${git_http_links}) string(REPLACE "${CMAKE_BINARY_DIR}" "" b ${b}) - install(CODE "file(CREATE_LINK ${CMAKE_INSTALL_PREFIX}/libexec/git-core/git-remote-http${EXE_EXTENSION} ${CMAKE_INSTALL_PREFIX}/libexec/git-core/${b}${EXE_EXTENSION})") + install(CODE "file(CREATE_LINK ${CMAKE_INSTALL_PREFIX}/libexec/git-core/git-remote-http${EXE_EXTENSION} ${CMAKE_INSTALL_PREFIX}/libexec/git-core/${b})") endforeach() install(PROGRAMS ${git_shell_scripts} ${git_perl_scripts} ${CMAKE_BINARY_DIR}/git-p4 @@ -24,17 +24,6 @@ #define CONVERT_STAT_BITS_TXT_CRLF 0x2 #define CONVERT_STAT_BITS_BIN 0x4 -enum crlf_action { - CRLF_UNDEFINED, - CRLF_BINARY, - CRLF_TEXT, - CRLF_TEXT_INPUT, - CRLF_TEXT_CRLF, - CRLF_AUTO, - CRLF_AUTO_INPUT, - CRLF_AUTO_CRLF -}; - struct text_stat { /* NUL, CR, LF and CRLF counts */ unsigned nul, lonecr, lonelf, crlf; @@ -172,7 +161,7 @@ static int text_eol_is_crlf(void) return 0; } -static enum eol output_eol(enum crlf_action crlf_action) +static enum eol output_eol(enum convert_crlf_action crlf_action) { switch (crlf_action) { case CRLF_BINARY: @@ -246,7 +235,7 @@ static int has_crlf_in_index(const struct index_state *istate, const char *path) } static int will_convert_lf_to_crlf(struct text_stat *stats, - enum crlf_action crlf_action) + enum convert_crlf_action crlf_action) { if (output_eol(crlf_action) != EOL_CRLF) return 0; @@ -499,7 +488,7 @@ static int encode_to_worktree(const char *path, const char *src, size_t src_len, static int crlf_to_git(const struct index_state *istate, const char *path, const char *src, size_t len, struct strbuf *buf, - enum crlf_action crlf_action, int conv_flags) + enum convert_crlf_action crlf_action, int conv_flags) { struct text_stat stats; char *dst; @@ -585,8 +574,8 @@ static int crlf_to_git(const struct index_state *istate, return 1; } -static int crlf_to_worktree(const char *src, size_t len, - struct strbuf *buf, enum crlf_action crlf_action) +static int crlf_to_worktree(const char *src, size_t len, struct strbuf *buf, + enum convert_crlf_action crlf_action) { char *to_free = NULL; struct text_stat stats; @@ -884,9 +873,13 @@ static int apply_multi_file_filter(const char *path, const char *src, size_t len goto done; if (fd >= 0) - err = write_packetized_from_fd(fd, process->in); + err = write_packetized_from_fd_no_flush(fd, process->in); else - err = write_packetized_from_buf(src, len, process->in); + err = write_packetized_from_buf_no_flush(src, len, process->in); + if (err) + goto done; + + err = packet_flush_gently(process->in); if (err) goto done; @@ -903,7 +896,8 @@ static int apply_multi_file_filter(const char *path, const char *src, size_t len if (err) goto done; - err = read_packetized_to_strbuf(process->out, &nbuf) < 0; + err = read_packetized_to_strbuf(process->out, &nbuf, + PACKET_READ_GENTLE_ON_EOF) < 0; if (err) goto done; @@ -1247,7 +1241,7 @@ static const char *git_path_check_encoding(struct attr_check_item *check) return value; } -static enum crlf_action git_path_check_crlf(struct attr_check_item *check) +static enum convert_crlf_action git_path_check_crlf(struct attr_check_item *check) { const char *value = check->value; @@ -1297,18 +1291,10 @@ static int git_path_check_ident(struct attr_check_item *check) return !!ATTR_TRUE(value); } -struct conv_attrs { - struct convert_driver *drv; - enum crlf_action attr_action; /* What attr says */ - enum crlf_action crlf_action; /* When no attr is set, use core.autocrlf */ - int ident; - const char *working_tree_encoding; /* Supported encoding or default encoding if NULL */ -}; - static struct attr_check *check; -static void convert_attrs(const struct index_state *istate, - struct conv_attrs *ca, const char *path) +void convert_attrs(const struct index_state *istate, + struct conv_attrs *ca, const char *path) { struct attr_check_item *ccheck = NULL; @@ -1465,19 +1451,16 @@ void convert_to_git_filter_fd(const struct index_state *istate, ident_to_git(dst->buf, dst->len, dst, ca.ident); } -static int convert_to_working_tree_internal(const struct index_state *istate, - const char *path, const char *src, - size_t len, struct strbuf *dst, - int normalizing, - const struct checkout_metadata *meta, - struct delayed_checkout *dco) +static int convert_to_working_tree_ca_internal(const struct conv_attrs *ca, + const char *path, const char *src, + size_t len, struct strbuf *dst, + int normalizing, + const struct checkout_metadata *meta, + struct delayed_checkout *dco) { int ret = 0, ret_filter = 0; - struct conv_attrs ca; - convert_attrs(istate, &ca, path); - - ret |= ident_to_worktree(src, len, dst, ca.ident); + ret |= ident_to_worktree(src, len, dst, ca->ident); if (ret) { src = dst->buf; len = dst->len; @@ -1487,49 +1470,56 @@ static int convert_to_working_tree_internal(const struct index_state *istate, * is a smudge or process filter (even if the process filter doesn't * support smudge). The filters might expect CRLFs. */ - if ((ca.drv && (ca.drv->smudge || ca.drv->process)) || !normalizing) { - ret |= crlf_to_worktree(src, len, dst, ca.crlf_action); + if ((ca->drv && (ca->drv->smudge || ca->drv->process)) || !normalizing) { + ret |= crlf_to_worktree(src, len, dst, ca->crlf_action); if (ret) { src = dst->buf; len = dst->len; } } - ret |= encode_to_worktree(path, src, len, dst, ca.working_tree_encoding); + ret |= encode_to_worktree(path, src, len, dst, ca->working_tree_encoding); if (ret) { src = dst->buf; len = dst->len; } ret_filter = apply_filter( - path, src, len, -1, dst, ca.drv, CAP_SMUDGE, meta, dco); - if (!ret_filter && ca.drv && ca.drv->required) - die(_("%s: smudge filter %s failed"), path, ca.drv->name); + path, src, len, -1, dst, ca->drv, CAP_SMUDGE, meta, dco); + if (!ret_filter && ca->drv && ca->drv->required) + die(_("%s: smudge filter %s failed"), path, ca->drv->name); return ret | ret_filter; } -int async_convert_to_working_tree(const struct index_state *istate, - const char *path, const char *src, - size_t len, struct strbuf *dst, - const struct checkout_metadata *meta, - void *dco) +int async_convert_to_working_tree_ca(const struct conv_attrs *ca, + const char *path, const char *src, + size_t len, struct strbuf *dst, + const struct checkout_metadata *meta, + void *dco) { - return convert_to_working_tree_internal(istate, path, src, len, dst, 0, meta, dco); + return convert_to_working_tree_ca_internal(ca, path, src, len, dst, 0, + meta, dco); } -int convert_to_working_tree(const struct index_state *istate, - const char *path, const char *src, - size_t len, struct strbuf *dst, - const struct checkout_metadata *meta) +int convert_to_working_tree_ca(const struct conv_attrs *ca, + const char *path, const char *src, + size_t len, struct strbuf *dst, + const struct checkout_metadata *meta) { - return convert_to_working_tree_internal(istate, path, src, len, dst, 0, meta, NULL); + return convert_to_working_tree_ca_internal(ca, path, src, len, dst, 0, + meta, NULL); } int renormalize_buffer(const struct index_state *istate, const char *path, const char *src, size_t len, struct strbuf *dst) { - int ret = convert_to_working_tree_internal(istate, path, src, len, dst, 1, NULL, NULL); + struct conv_attrs ca; + int ret; + + convert_attrs(istate, &ca, path); + ret = convert_to_working_tree_ca_internal(&ca, path, src, len, dst, 1, + NULL, NULL); if (ret) { src = dst->buf; len = dst->len; @@ -1956,34 +1946,25 @@ static struct stream_filter *ident_filter(const struct object_id *oid) } /* - * Return an appropriately constructed filter for the path, or NULL if + * Return an appropriately constructed filter for the given ca, or NULL if * the contents cannot be filtered without reading the whole thing * in-core. * * Note that you would be crazy to set CRLF, smudge/clean or ident to a * large binary blob you would want us not to slurp into the memory! */ -struct stream_filter *get_stream_filter(const struct index_state *istate, - const char *path, - const struct object_id *oid) +struct stream_filter *get_stream_filter_ca(const struct conv_attrs *ca, + const struct object_id *oid) { - struct conv_attrs ca; struct stream_filter *filter = NULL; - convert_attrs(istate, &ca, path); - if (ca.drv && (ca.drv->process || ca.drv->smudge || ca.drv->clean)) + if (classify_conv_attrs(ca) != CA_CLASS_STREAMABLE) return NULL; - if (ca.working_tree_encoding) - return NULL; - - if (ca.crlf_action == CRLF_AUTO || ca.crlf_action == CRLF_AUTO_CRLF) - return NULL; - - if (ca.ident) + if (ca->ident) filter = ident_filter(oid); - if (output_eol(ca.crlf_action) == EOL_CRLF) + if (output_eol(ca->crlf_action) == EOL_CRLF) filter = cascade_filter(filter, lf_to_crlf_filter()); else filter = cascade_filter(filter, &null_filter_singleton); @@ -1991,6 +1972,15 @@ struct stream_filter *get_stream_filter(const struct index_state *istate, return filter; } +struct stream_filter *get_stream_filter(const struct index_state *istate, + const char *path, + const struct object_id *oid) +{ + struct conv_attrs ca; + convert_attrs(istate, &ca, path); + return get_stream_filter_ca(&ca, oid); +} + void free_stream_filter(struct stream_filter *filter) { filter->vtbl->free(filter); @@ -2024,3 +2014,21 @@ void clone_checkout_metadata(struct checkout_metadata *dst, if (blob) oidcpy(&dst->blob, blob); } + +enum conv_attrs_classification classify_conv_attrs(const struct conv_attrs *ca) +{ + if (ca->drv) { + if (ca->drv->process) + return CA_CLASS_INCORE_PROCESS; + if (ca->drv->smudge || ca->drv->clean) + return CA_CLASS_INCORE_FILTER; + } + + if (ca->working_tree_encoding) + return CA_CLASS_INCORE; + + if (ca->crlf_action == CRLF_AUTO || ca->crlf_action == CRLF_AUTO_CRLF) + return CA_CLASS_INCORE; + + return CA_CLASS_STREAMABLE; +} @@ -63,6 +63,30 @@ struct checkout_metadata { struct object_id blob; }; +enum convert_crlf_action { + CRLF_UNDEFINED, + CRLF_BINARY, + CRLF_TEXT, + CRLF_TEXT_INPUT, + CRLF_TEXT_CRLF, + CRLF_AUTO, + CRLF_AUTO_INPUT, + CRLF_AUTO_CRLF +}; + +struct convert_driver; + +struct conv_attrs { + struct convert_driver *drv; + enum convert_crlf_action attr_action; /* What attr says */ + enum convert_crlf_action crlf_action; /* When no attr is set, use core.autocrlf */ + int ident; + const char *working_tree_encoding; /* Supported encoding or default encoding if NULL */ +}; + +void convert_attrs(const struct index_state *istate, + struct conv_attrs *ca, const char *path); + extern enum eol core_eol; extern char *check_roundtrip_encoding; const char *get_cached_convert_stats_ascii(const struct index_state *istate, @@ -75,15 +99,34 @@ const char *get_convert_attr_ascii(const struct index_state *istate, int convert_to_git(const struct index_state *istate, const char *path, const char *src, size_t len, struct strbuf *dst, int conv_flags); -int convert_to_working_tree(const struct index_state *istate, - const char *path, const char *src, - size_t len, struct strbuf *dst, - const struct checkout_metadata *meta); -int async_convert_to_working_tree(const struct index_state *istate, - const char *path, const char *src, - size_t len, struct strbuf *dst, - const struct checkout_metadata *meta, - void *dco); +int convert_to_working_tree_ca(const struct conv_attrs *ca, + const char *path, const char *src, + size_t len, struct strbuf *dst, + const struct checkout_metadata *meta); +int async_convert_to_working_tree_ca(const struct conv_attrs *ca, + const char *path, const char *src, + size_t len, struct strbuf *dst, + const struct checkout_metadata *meta, + void *dco); +static inline int convert_to_working_tree(const struct index_state *istate, + const char *path, const char *src, + size_t len, struct strbuf *dst, + const struct checkout_metadata *meta) +{ + struct conv_attrs ca; + convert_attrs(istate, &ca, path); + return convert_to_working_tree_ca(&ca, path, src, len, dst, meta); +} +static inline int async_convert_to_working_tree(const struct index_state *istate, + const char *path, const char *src, + size_t len, struct strbuf *dst, + const struct checkout_metadata *meta, + void *dco) +{ + struct conv_attrs ca; + convert_attrs(istate, &ca, path); + return async_convert_to_working_tree_ca(&ca, path, src, len, dst, meta, dco); +} int async_query_available_blobs(const char *cmd, struct string_list *available_paths); int renormalize_buffer(const struct index_state *istate, @@ -136,6 +179,8 @@ struct stream_filter; /* opaque */ struct stream_filter *get_stream_filter(const struct index_state *istate, const char *path, const struct object_id *); +struct stream_filter *get_stream_filter_ca(const struct conv_attrs *ca, + const struct object_id *oid); void free_stream_filter(struct stream_filter *); int is_null_stream_filter(struct stream_filter *); @@ -155,4 +200,37 @@ int stream_filter(struct stream_filter *, const char *input, size_t *isize_p, char *output, size_t *osize_p); +enum conv_attrs_classification { + /* + * The blob must be loaded into a buffer before it can be + * smudged. All smudging is done in-proc. + */ + CA_CLASS_INCORE, + + /* + * The blob must be loaded into a buffer, but uses a + * single-file driver filter, such as rot13. + */ + CA_CLASS_INCORE_FILTER, + + /* + * The blob must be loaded into a buffer, but uses a + * long-running driver process, such as LFS. This might or + * might not use delayed operations. (The important thing is + * that there is a single subordinate long-running process + * handling all associated blobs and in case of delayed + * operations, may hold per-blob state.) + */ + CA_CLASS_INCORE_PROCESS, + + /* + * The blob can be streamed and smudged without needing to + * completely read it into a buffer. + */ + CA_CLASS_STREAMABLE, +}; + +enum conv_attrs_classification classify_conv_attrs( + const struct conv_attrs *ca); + #endif /* CONVERT_H */ diff --git a/csum-file.c b/csum-file.c index 0f35fa5..7510950 100644 --- a/csum-file.c +++ b/csum-file.c @@ -89,32 +89,35 @@ int finalize_hashfile(struct hashfile *f, unsigned char *result, unsigned int fl void hashwrite(struct hashfile *f, const void *buf, unsigned int count) { while (count) { - unsigned offset = f->offset; - unsigned left = sizeof(f->buffer) - offset; + unsigned left = sizeof(f->buffer) - f->offset; unsigned nr = count > left ? left : count; - const void *data; if (f->do_crc) f->crc32 = crc32(f->crc32, buf, nr); if (nr == sizeof(f->buffer)) { - /* process full buffer directly without copy */ - data = buf; + /* + * Flush a full batch worth of data directly + * from the input, skipping the memcpy() to + * the hashfile's buffer. In this block, + * f->offset is necessarily zero. + */ + the_hash_algo->update_fn(&f->ctx, buf, nr); + flush(f, buf, nr); } else { - memcpy(f->buffer + offset, buf, nr); - data = f->buffer; + /* + * Copy to the hashfile's buffer, flushing only + * if it became full. + */ + memcpy(f->buffer + f->offset, buf, nr); + f->offset += nr; + left -= nr; + if (!left) + hashflush(f); } count -= nr; - offset += nr; buf = (char *) buf + nr; - left -= nr; - if (!left) { - the_hash_algo->update_fn(&f->ctx, data, offset); - flush(f, data, offset); - offset = 0; - } - f->offset = offset; } } @@ -566,14 +566,14 @@ static void parse_host_and_port(char *hostport, char **host, /* * Sanitize a string from the client so that it's OK to be inserted into a - * filesystem path. Specifically, we disallow slashes, runs of "..", and - * trailing and leading dots, which means that the client cannot escape - * our base path via ".." traversal. + * filesystem path. Specifically, we disallow directory separators, runs + * of "..", and trailing and leading dots, which means that the client + * cannot escape our base path via ".." traversal. */ static void sanitize_client(struct strbuf *out, const char *in) { for (; *in; in++) { - if (*in == '/') + if (is_dir_sep(*in)) continue; if (*in == '.' && (!out->len || out->buf[out->len - 1] == '.')) continue; diff --git a/diffcore-rename.c b/diffcore-rename.c index e2ed648..36a98f9 100644 --- a/diffcore-rename.c +++ b/diffcore-rename.c @@ -527,6 +527,7 @@ static void update_dir_rename_counts(struct dir_rename_info *info, } static void initialize_dir_rename_info(struct dir_rename_info *info, + struct strset *relevant_sources, struct strset *dirs_removed, struct strmap *dir_rename_count) { @@ -534,7 +535,7 @@ static void initialize_dir_rename_info(struct dir_rename_info *info, struct strmap_entry *entry; int i; - if (!dirs_removed) { + if (!dirs_removed && !relevant_sources) { info->setup = 0; return; } @@ -549,7 +550,20 @@ static void initialize_dir_rename_info(struct dir_rename_info *info, strmap_init_with_options(&info->dir_rename_guess, NULL, 0); /* Setup info->relevant_source_dirs */ - info->relevant_source_dirs = dirs_removed; + info->relevant_source_dirs = NULL; + if (dirs_removed || !relevant_sources) { + info->relevant_source_dirs = dirs_removed; /* might be NULL */ + } else { + info->relevant_source_dirs = xmalloc(sizeof(struct strintmap)); + strset_init(info->relevant_source_dirs); + strset_for_each_entry(relevant_sources, &iter, entry) { + char *dirname = get_dirname(entry->key); + if (!dirs_removed || + strset_contains(dirs_removed, dirname)) + strset_add(info->relevant_source_dirs, dirname); + free(dirname); + } + } /* * Loop setting up both info->idx_map, and doing setup of @@ -627,6 +641,13 @@ static void cleanup_dir_rename_info(struct dir_rename_info *info, /* dir_rename_guess */ strmap_clear(&info->dir_rename_guess, 1); + /* relevant_source_dirs */ + if (info->relevant_source_dirs && + info->relevant_source_dirs != dirs_removed) { + strset_clear(info->relevant_source_dirs); + FREE_AND_NULL(info->relevant_source_dirs); + } + /* dir_rename_count */ if (!keep_dir_rename_count) { partial_clear_dir_rename_count(info->dir_rename_count); @@ -749,6 +770,7 @@ static int idx_possible_rename(char *filename, struct dir_rename_info *info) static int find_basename_matches(struct diff_options *options, int minimum_score, struct dir_rename_info *info, + struct strset *relevant_sources, struct strset *dirs_removed) { /* @@ -839,6 +861,11 @@ static int find_basename_matches(struct diff_options *options, intptr_t src_index; intptr_t dst_index; + /* Skip irrelevant sources */ + if (relevant_sources && + !strset_contains(relevant_sources, filename)) + continue; + /* * If the basename is unique among remaining sources, then * src_index will equal 'i' and we can attempt to match it @@ -991,11 +1018,12 @@ static int find_renames(struct diff_score *mx, return count; } -static void remove_unneeded_paths_from_src(int detecting_copies) +static void remove_unneeded_paths_from_src(int detecting_copies, + struct strset *interesting) { int i, new_num_src; - if (detecting_copies) + if (detecting_copies && !interesting) return; /* nothing to remove */ if (break_idx) return; /* culling incompatible with break detection */ @@ -1022,12 +1050,18 @@ static void remove_unneeded_paths_from_src(int detecting_copies) * from rename_src here. */ for (i = 0, new_num_src = 0; i < rename_src_nr; i++) { + struct diff_filespec *one = rename_src[i].p->one; + /* * renames are stored in rename_dst, so if a rename has * already been detected using this source, we can just * remove the source knowing rename_dst has its info. */ - if (rename_src[i].p->one->rename_used) + if (!detecting_copies && one->rename_used) + continue; + + /* If we don't care about the source path, skip it */ + if (interesting && !strset_contains(interesting, one->path)) continue; if (new_num_src < i) @@ -1040,6 +1074,7 @@ static void remove_unneeded_paths_from_src(int detecting_copies) } void diffcore_rename_extended(struct diff_options *options, + struct strset *relevant_sources, struct strset *dirs_removed, struct strmap *dir_rename_count) { @@ -1060,6 +1095,8 @@ void diffcore_rename_extended(struct diff_options *options, want_copies = (detect_rename == DIFF_DETECT_COPY); if (dirs_removed && (break_idx || want_copies)) BUG("dirs_removed incompatible with break/copy detection"); + if (break_idx && relevant_sources) + BUG("break detection incompatible with source specification"); if (!minimum_score) minimum_score = DEFAULT_RENAME_SCORE; @@ -1127,9 +1164,10 @@ void diffcore_rename_extended(struct diff_options *options, /* * Cull sources: * - remove ones corresponding to exact renames + * - remove ones not found in relevant_sources */ trace2_region_enter("diff", "cull after exact", options->repo); - remove_unneeded_paths_from_src(want_copies); + remove_unneeded_paths_from_src(want_copies, relevant_sources); trace2_region_leave("diff", "cull after exact", options->repo); } else { /* Determine minimum score to match basenames */ @@ -1148,12 +1186,12 @@ void diffcore_rename_extended(struct diff_options *options, * - remove ones involved in renames (found via exact match) */ trace2_region_enter("diff", "cull after exact", options->repo); - remove_unneeded_paths_from_src(want_copies); + remove_unneeded_paths_from_src(want_copies, NULL); trace2_region_leave("diff", "cull after exact", options->repo); /* Preparation for basename-driven matching. */ trace2_region_enter("diff", "dir rename setup", options->repo); - initialize_dir_rename_info(&info, + initialize_dir_rename_info(&info, relevant_sources, dirs_removed, dir_rename_count); trace2_region_leave("diff", "dir rename setup", options->repo); @@ -1161,15 +1199,18 @@ void diffcore_rename_extended(struct diff_options *options, trace2_region_enter("diff", "basename matches", options->repo); rename_count += find_basename_matches(options, min_basename_score, - &info, dirs_removed); + &info, + relevant_sources, + dirs_removed); trace2_region_leave("diff", "basename matches", options->repo); /* * Cull sources, again: * - remove ones involved in renames (found via basenames) + * - remove ones not found in relevant_sources */ trace2_region_enter("diff", "cull basename", options->repo); - remove_unneeded_paths_from_src(want_copies); + remove_unneeded_paths_from_src(want_copies, relevant_sources); trace2_region_leave("diff", "cull basename", options->repo); } @@ -1341,5 +1382,5 @@ void diffcore_rename_extended(struct diff_options *options, void diffcore_rename(struct diff_options *options) { - diffcore_rename_extended(options, NULL, NULL); + diffcore_rename_extended(options, NULL, NULL, NULL); } @@ -166,6 +166,7 @@ void partial_clear_dir_rename_count(struct strmap *dir_rename_count); void diffcore_break(struct repository *, int); void diffcore_rename(struct diff_options *); void diffcore_rename_extended(struct diff_options *options, + struct strset *relevant_sources, struct strset *dirs_removed, struct strmap *dir_rename_count); void diffcore_merge_broken(void); @@ -6,6 +6,7 @@ #include "submodule.h" #include "progress.h" #include "fsmonitor.h" +#include "entry.h" static void create_directories(const char *path, int path_len, const struct checkout *state) @@ -83,7 +84,7 @@ static int create_file(const char *path, unsigned int mode) return open(path, O_WRONLY | O_CREAT | O_EXCL, mode); } -static void *read_blob_entry(const struct cache_entry *ce, unsigned long *size) +void *read_blob_entry(const struct cache_entry *ce, unsigned long *size) { enum object_type type; void *blob_data = read_object_file(&ce->oid, &type, size); @@ -108,7 +109,7 @@ static int open_output_fd(char *path, const struct cache_entry *ce, int to_tempf } } -static int fstat_output(int fd, const struct checkout *state, struct stat *st) +int fstat_checkout_output(int fd, const struct checkout *state, struct stat *st) { /* use fstat() only when path == ce->name */ if (fstat_is_reliable() && @@ -131,7 +132,7 @@ static int streaming_write_entry(const struct cache_entry *ce, char *path, return -1; result |= stream_blob_to_fd(fd, &ce->oid, filter, 1); - *fstat_done = fstat_output(fd, state, statbuf); + *fstat_done = fstat_checkout_output(fd, state, statbuf); result |= close(fd); if (result) @@ -250,8 +251,21 @@ int finish_delayed_checkout(struct checkout *state, int *nr_checkouts) return errs; } -static int write_entry(struct cache_entry *ce, - char *path, const struct checkout *state, int to_tempfile) +void update_ce_after_write(const struct checkout *state, struct cache_entry *ce, + struct stat *st) +{ + if (state->refresh_cache) { + assert(state->istate); + fill_stat_cache_info(state->istate, ce, st); + ce->ce_flags |= CE_UPDATE_IN_BASE; + mark_fsmonitor_invalid(state->istate, ce); + state->istate->cache_changed |= CE_ENTRY_CHANGED; + } +} + +/* Note: ca is used (and required) iff the entry refers to a regular file. */ +static int write_entry(struct cache_entry *ce, char *path, struct conv_attrs *ca, + const struct checkout *state, int to_tempfile) { unsigned int ce_mode_s_ifmt = ce->ce_mode & S_IFMT; struct delayed_checkout *dco = state->delayed_checkout; @@ -268,8 +282,7 @@ static int write_entry(struct cache_entry *ce, clone_checkout_metadata(&meta, &state->meta, &ce->oid); if (ce_mode_s_ifmt == S_IFREG) { - struct stream_filter *filter = get_stream_filter(state->istate, ce->name, - &ce->oid); + struct stream_filter *filter = get_stream_filter_ca(ca, &ce->oid); if (filter && !streaming_write_entry(ce, path, filter, state, to_tempfile, @@ -316,14 +329,17 @@ static int write_entry(struct cache_entry *ce, * Convert from git internal format to working tree format */ if (dco && dco->state != CE_NO_DELAY) { - ret = async_convert_to_working_tree(state->istate, ce->name, new_blob, - size, &buf, &meta, dco); + ret = async_convert_to_working_tree_ca(ca, ce->name, + new_blob, size, + &buf, &meta, dco); if (ret && string_list_has_string(&dco->paths, ce->name)) { free(new_blob); goto delayed; } - } else - ret = convert_to_working_tree(state->istate, ce->name, new_blob, size, &buf, &meta); + } else { + ret = convert_to_working_tree_ca(ca, ce->name, new_blob, + size, &buf, &meta); + } if (ret) { free(new_blob); @@ -345,7 +361,7 @@ static int write_entry(struct cache_entry *ce, wrote = write_in_full(fd, new_blob, size); if (!to_tempfile) - fstat_done = fstat_output(fd, state, &st); + fstat_done = fstat_checkout_output(fd, state, &st); close(fd); free(new_blob); if (wrote < 0) @@ -370,15 +386,10 @@ static int write_entry(struct cache_entry *ce, finish: if (state->refresh_cache) { - assert(state->istate); - if (!fstat_done) - if (lstat(ce->name, &st) < 0) - return error_errno("unable to stat just-written file %s", - ce->name); - fill_stat_cache_info(state->istate, ce, &st); - ce->ce_flags |= CE_UPDATE_IN_BASE; - mark_fsmonitor_invalid(state->istate, ce); - state->istate->cache_changed |= CE_ENTRY_CHANGED; + if (!fstat_done && lstat(ce->name, &st) < 0) + return error_errno("unable to stat just-written file %s", + ce->name); + update_ce_after_write(state, ce , &st); } delayed: return 0; @@ -429,19 +440,13 @@ static void mark_colliding_entries(const struct checkout *state, } } -/* - * Write the contents from ce out to the working tree. - * - * When topath[] is not NULL, instead of writing to the working tree - * file named by ce, a temporary file is created by this function and - * its name is returned in topath[], which must be able to hold at - * least TEMPORARY_FILENAME_LENGTH bytes long. - */ -int checkout_entry(struct cache_entry *ce, const struct checkout *state, - char *topath, int *nr_checkouts) +int checkout_entry_ca(struct cache_entry *ce, struct conv_attrs *ca, + const struct checkout *state, char *topath, + int *nr_checkouts) { static struct strbuf path = STRBUF_INIT; struct stat st; + struct conv_attrs ca_buf; if (ce->ce_flags & CE_WT_REMOVE) { if (topath) @@ -454,8 +459,13 @@ int checkout_entry(struct cache_entry *ce, const struct checkout *state, return 0; } - if (topath) - return write_entry(ce, topath, state, 1); + if (topath) { + if (S_ISREG(ce->ce_mode) && !ca) { + convert_attrs(state->istate, &ca_buf, ce->name); + ca = &ca_buf; + } + return write_entry(ce, topath, ca, state, 1); + } strbuf_reset(&path); strbuf_add(&path, state->base_dir, state->base_dir_len); @@ -517,9 +527,16 @@ int checkout_entry(struct cache_entry *ce, const struct checkout *state, return 0; create_directories(path.buf, path.len, state); + if (nr_checkouts) (*nr_checkouts)++; - return write_entry(ce, path.buf, state, 0); + + if (S_ISREG(ce->ce_mode) && !ca) { + convert_attrs(state->istate, &ca_buf, ce->name); + ca = &ca_buf; + } + + return write_entry(ce, path.buf, ca, state, 0); } void unlink_entry(const struct cache_entry *ce) @@ -0,0 +1,59 @@ +#ifndef ENTRY_H +#define ENTRY_H + +#include "cache.h" +#include "convert.h" + +struct checkout { + struct index_state *istate; + const char *base_dir; + int base_dir_len; + struct delayed_checkout *delayed_checkout; + struct checkout_metadata meta; + unsigned force:1, + quiet:1, + not_new:1, + clone:1, + refresh_cache:1; +}; +#define CHECKOUT_INIT { NULL, "" } + +#define TEMPORARY_FILENAME_LENGTH 25 +/* + * Write the contents from ce out to the working tree. + * + * When topath[] is not NULL, instead of writing to the working tree + * file named by ce, a temporary file is created by this function and + * its name is returned in topath[], which must be able to hold at + * least TEMPORARY_FILENAME_LENGTH bytes long. + * + * With checkout_entry_ca(), callers can optionally pass a preloaded + * conv_attrs struct (to avoid reloading it), when ce refers to a + * regular file. If ca is NULL, the attributes will be loaded + * internally when (and if) needed. + */ +int checkout_entry_ca(struct cache_entry *ce, struct conv_attrs *ca, + const struct checkout *state, char *topath, + int *nr_checkouts); +static inline int checkout_entry(struct cache_entry *ce, + const struct checkout *state, char *topath, + int *nr_checkouts) +{ + return checkout_entry_ca(ce, NULL, state, topath, nr_checkouts); +} + +void enable_delayed_checkout(struct checkout *state); +int finish_delayed_checkout(struct checkout *state, int *nr_checkouts); + +/* + * Unlink the last component and schedule the leading directories for + * removal, such that empty directories get removed. + */ +void unlink_entry(const struct cache_entry *ce); + +void *read_blob_entry(const struct cache_entry *ce, unsigned long *size); +int fstat_checkout_output(int fd, const struct checkout *state, struct stat *st); +void update_ce_after_write(const struct checkout *state, struct cache_entry *ce, + struct stat *st); + +#endif /* ENTRY_H */ diff --git a/fetch-pack.c b/fetch-pack.c index fb04a76..6e68276 100644 --- a/fetch-pack.c +++ b/fetch-pack.c @@ -38,6 +38,7 @@ static int server_supports_filtering; static int advertise_sid; static struct shallow_lock shallow_lock; static const char *alternate_shallow_file; +static struct fsck_options fsck_options = FSCK_OPTIONS_MISSING_GITMODULES; static struct strbuf fsck_msg_types = STRBUF_INIT; static struct string_list uri_protocols = STRING_LIST_INIT_DUP; @@ -987,22 +988,6 @@ static int cmp_ref_by_name(const void *a_, const void *b_) return strcmp(a->name, b->name); } -static void fsck_gitmodules_oids(struct oidset *gitmodules_oids) -{ - struct oidset_iter iter; - const struct object_id *oid; - struct fsck_options fo = FSCK_OPTIONS_STRICT; - - if (!oidset_size(gitmodules_oids)) - return; - - oidset_iter_init(gitmodules_oids, &iter); - while ((oid = oidset_iter_next(&iter))) - register_found_gitmodules(oid); - if (fsck_finish(&fo)) - die("fsck failed"); -} - static struct ref *do_fetch_pack(struct fetch_pack_args *args, int fd[2], const struct ref *orig_ref, @@ -1017,7 +1002,6 @@ static struct ref *do_fetch_pack(struct fetch_pack_args *args, int agent_len; struct fetch_negotiator negotiator_alloc; struct fetch_negotiator *negotiator; - struct oidset gitmodules_oids = OIDSET_INIT; negotiator = &negotiator_alloc; fetch_negotiator_init(r, negotiator); @@ -1129,14 +1113,17 @@ static struct ref *do_fetch_pack(struct fetch_pack_args *args, if (args->deepen) setup_alternate_shallow(&shallow_lock, &alternate_shallow_file, NULL); - else if (si->nr_ours || si->nr_theirs) + else if (si->nr_ours || si->nr_theirs) { + if (args->reject_shallow_remote) + die(_("source repository is shallow, reject to clone.")); alternate_shallow_file = setup_temporary_shallow(si->shallow); - else + } else alternate_shallow_file = NULL; if (get_pack(args, fd, pack_lockfiles, NULL, sought, nr_sought, - &gitmodules_oids)) + &fsck_options.gitmodules_found)) die(_("git fetch-pack: fetch failed.")); - fsck_gitmodules_oids(&gitmodules_oids); + if (fsck_finish(&fsck_options)) + die("fsck failed"); all_done: if (negotiator) @@ -1498,10 +1485,12 @@ static void receive_shallow_info(struct fetch_pack_args *args, * rejected (unless --update-shallow is set); do the same. */ prepare_shallow_info(si, shallows); - if (si->nr_ours || si->nr_theirs) + if (si->nr_ours || si->nr_theirs) { + if (args->reject_shallow_remote) + die(_("source repository is shallow, reject to clone.")); alternate_shallow_file = setup_temporary_shallow(si->shallow); - else + } else alternate_shallow_file = NULL; } else { alternate_shallow_file = NULL; @@ -1587,7 +1576,6 @@ static struct ref *do_fetch_pack_v2(struct fetch_pack_args *args, struct string_list packfile_uris = STRING_LIST_INIT_DUP; int i; struct strvec index_pack_args = STRVEC_INIT; - struct oidset gitmodules_oids = OIDSET_INIT; negotiator = &negotiator_alloc; fetch_negotiator_init(r, negotiator); @@ -1678,7 +1666,7 @@ static struct ref *do_fetch_pack_v2(struct fetch_pack_args *args, process_section_header(&reader, "packfile", 0); if (get_pack(args, fd, pack_lockfiles, packfile_uris.nr ? &index_pack_args : NULL, - sought, nr_sought, &gitmodules_oids)) + sought, nr_sought, &fsck_options.gitmodules_found)) die(_("git fetch-pack: fetch failed.")); do_check_stateless_delimiter(args, &reader); @@ -1721,7 +1709,7 @@ static struct ref *do_fetch_pack_v2(struct fetch_pack_args *args, packname[the_hash_algo->hexsz] = '\0'; - parse_gitmodules_oids(cmd.out, &gitmodules_oids); + parse_gitmodules_oids(cmd.out, &fsck_options.gitmodules_found); close(cmd.out); @@ -1742,7 +1730,8 @@ static struct ref *do_fetch_pack_v2(struct fetch_pack_args *args, string_list_clear(&packfile_uris, 0); strvec_clear(&index_pack_args); - fsck_gitmodules_oids(&gitmodules_oids); + if (fsck_finish(&fsck_options)) + die("fsck failed"); if (negotiator) negotiator->release(negotiator); diff --git a/fetch-pack.h b/fetch-pack.h index 736a3da..f114d72 100644 --- a/fetch-pack.h +++ b/fetch-pack.h @@ -39,6 +39,7 @@ struct fetch_pack_args { unsigned self_contained_and_connected:1; unsigned cloning:1; unsigned update_shallow:1; + unsigned reject_shallow_remote:1; unsigned deepen:1; /* @@ -19,90 +19,19 @@ #include "credential.h" #include "help.h" -static struct oidset gitmodules_found = OIDSET_INIT; -static struct oidset gitmodules_done = OIDSET_INIT; - -#define FSCK_FATAL -1 -#define FSCK_INFO -2 - -#define FOREACH_MSG_ID(FUNC) \ - /* fatal errors */ \ - FUNC(NUL_IN_HEADER, FATAL) \ - FUNC(UNTERMINATED_HEADER, FATAL) \ - /* errors */ \ - FUNC(BAD_DATE, ERROR) \ - FUNC(BAD_DATE_OVERFLOW, ERROR) \ - FUNC(BAD_EMAIL, ERROR) \ - FUNC(BAD_NAME, ERROR) \ - FUNC(BAD_OBJECT_SHA1, ERROR) \ - FUNC(BAD_PARENT_SHA1, ERROR) \ - FUNC(BAD_TAG_OBJECT, ERROR) \ - FUNC(BAD_TIMEZONE, ERROR) \ - FUNC(BAD_TREE, ERROR) \ - FUNC(BAD_TREE_SHA1, ERROR) \ - FUNC(BAD_TYPE, ERROR) \ - FUNC(DUPLICATE_ENTRIES, ERROR) \ - FUNC(MISSING_AUTHOR, ERROR) \ - FUNC(MISSING_COMMITTER, ERROR) \ - FUNC(MISSING_EMAIL, ERROR) \ - FUNC(MISSING_NAME_BEFORE_EMAIL, ERROR) \ - FUNC(MISSING_OBJECT, ERROR) \ - FUNC(MISSING_SPACE_BEFORE_DATE, ERROR) \ - FUNC(MISSING_SPACE_BEFORE_EMAIL, ERROR) \ - FUNC(MISSING_TAG, ERROR) \ - FUNC(MISSING_TAG_ENTRY, ERROR) \ - FUNC(MISSING_TREE, ERROR) \ - FUNC(MISSING_TREE_OBJECT, ERROR) \ - FUNC(MISSING_TYPE, ERROR) \ - FUNC(MISSING_TYPE_ENTRY, ERROR) \ - FUNC(MULTIPLE_AUTHORS, ERROR) \ - FUNC(TREE_NOT_SORTED, ERROR) \ - FUNC(UNKNOWN_TYPE, ERROR) \ - FUNC(ZERO_PADDED_DATE, ERROR) \ - FUNC(GITMODULES_MISSING, ERROR) \ - FUNC(GITMODULES_BLOB, ERROR) \ - FUNC(GITMODULES_LARGE, ERROR) \ - FUNC(GITMODULES_NAME, ERROR) \ - FUNC(GITMODULES_SYMLINK, ERROR) \ - FUNC(GITMODULES_URL, ERROR) \ - FUNC(GITMODULES_PATH, ERROR) \ - FUNC(GITMODULES_UPDATE, ERROR) \ - /* warnings */ \ - FUNC(BAD_FILEMODE, WARN) \ - FUNC(EMPTY_NAME, WARN) \ - FUNC(FULL_PATHNAME, WARN) \ - FUNC(HAS_DOT, WARN) \ - FUNC(HAS_DOTDOT, WARN) \ - FUNC(HAS_DOTGIT, WARN) \ - FUNC(NULL_SHA1, WARN) \ - FUNC(ZERO_PADDED_FILEMODE, WARN) \ - FUNC(NUL_IN_COMMIT, WARN) \ - /* infos (reported as warnings, but ignored by default) */ \ - FUNC(GITMODULES_PARSE, INFO) \ - FUNC(BAD_TAG_NAME, INFO) \ - FUNC(MISSING_TAGGER_ENTRY, INFO) \ - /* ignored (elevated when requested) */ \ - FUNC(EXTRA_HEADER_ENTRY, IGNORE) - -#define MSG_ID(id, msg_type) FSCK_MSG_##id, -enum fsck_msg_id { - FOREACH_MSG_ID(MSG_ID) - FSCK_MSG_MAX -}; -#undef MSG_ID - #define STR(x) #x #define MSG_ID(id, msg_type) { STR(id), NULL, NULL, FSCK_##msg_type }, static struct { const char *id_string; const char *downcased; const char *camelcased; - int msg_type; + enum fsck_msg_type msg_type; } msg_id_info[FSCK_MSG_MAX + 1] = { - FOREACH_MSG_ID(MSG_ID) + FOREACH_FSCK_MSG_ID(MSG_ID) { NULL, NULL, NULL, -1 } }; #undef MSG_ID +#undef STR static void prepare_msg_ids(void) { @@ -164,25 +93,23 @@ void list_config_fsck_msg_ids(struct string_list *list, const char *prefix) list_config_item(list, prefix, msg_id_info[i].camelcased); } -static int fsck_msg_type(enum fsck_msg_id msg_id, +static enum fsck_msg_type fsck_msg_type(enum fsck_msg_id msg_id, struct fsck_options *options) { - int msg_type; - assert(msg_id >= 0 && msg_id < FSCK_MSG_MAX); - if (options->msg_type) - msg_type = options->msg_type[msg_id]; - else { - msg_type = msg_id_info[msg_id].msg_type; + if (!options->msg_type) { + enum fsck_msg_type msg_type = msg_id_info[msg_id].msg_type; + if (options->strict && msg_type == FSCK_WARN) msg_type = FSCK_ERROR; + return msg_type; } - return msg_type; + return options->msg_type[msg_id]; } -static int parse_msg_type(const char *str) +static enum fsck_msg_type parse_msg_type(const char *str) { if (!strcmp(str, "error")) return FSCK_ERROR; @@ -202,28 +129,35 @@ int is_valid_msg_type(const char *msg_id, const char *msg_type) return 1; } -void fsck_set_msg_type(struct fsck_options *options, - const char *msg_id, const char *msg_type) +void fsck_set_msg_type_from_ids(struct fsck_options *options, + enum fsck_msg_id msg_id, + enum fsck_msg_type msg_type) { - int id = parse_msg_id(msg_id), type; - - if (id < 0) - die("Unhandled message id: %s", msg_id); - type = parse_msg_type(msg_type); - - if (type != FSCK_ERROR && msg_id_info[id].msg_type == FSCK_FATAL) - die("Cannot demote %s to %s", msg_id, msg_type); - if (!options->msg_type) { int i; - int *msg_type; - ALLOC_ARRAY(msg_type, FSCK_MSG_MAX); + enum fsck_msg_type *severity; + ALLOC_ARRAY(severity, FSCK_MSG_MAX); for (i = 0; i < FSCK_MSG_MAX; i++) - msg_type[i] = fsck_msg_type(i, options); - options->msg_type = msg_type; + severity[i] = fsck_msg_type(i, options); + options->msg_type = severity; } - options->msg_type[id] = type; + options->msg_type[msg_id] = msg_type; +} + +void fsck_set_msg_type(struct fsck_options *options, + const char *msg_id_str, const char *msg_type_str) +{ + int msg_id = parse_msg_id(msg_id_str); + enum fsck_msg_type msg_type = parse_msg_type(msg_type_str); + + if (msg_id < 0) + die("Unhandled message id: %s", msg_id_str); + + if (msg_type != FSCK_ERROR && msg_id_info[msg_id].msg_type == FSCK_FATAL) + die("Cannot demote %s to %s", msg_id_str, msg_type_str); + + fsck_set_msg_type_from_ids(options, msg_id, msg_type); } void fsck_set_msg_types(struct fsck_options *options, const char *values) @@ -264,24 +198,6 @@ void fsck_set_msg_types(struct fsck_options *options, const char *values) free(to_free); } -static void append_msg_id(struct strbuf *sb, const char *msg_id) -{ - for (;;) { - char c = *(msg_id)++; - - if (!c) - break; - if (c != '_') - strbuf_addch(sb, tolower(c)); - else { - assert(*msg_id); - strbuf_addch(sb, *(msg_id)++); - } - } - - strbuf_addstr(sb, ": "); -} - static int object_on_skiplist(struct fsck_options *opts, const struct object_id *oid) { @@ -291,11 +207,12 @@ static int object_on_skiplist(struct fsck_options *opts, __attribute__((format (printf, 5, 6))) static int report(struct fsck_options *options, const struct object_id *oid, enum object_type object_type, - enum fsck_msg_id id, const char *fmt, ...) + enum fsck_msg_id msg_id, const char *fmt, ...) { va_list ap; struct strbuf sb = STRBUF_INIT; - int msg_type = fsck_msg_type(id, options), result; + enum fsck_msg_type msg_type = fsck_msg_type(msg_id, options); + int result; if (msg_type == FSCK_IGNORE) return 0; @@ -308,12 +225,13 @@ static int report(struct fsck_options *options, else if (msg_type == FSCK_INFO) msg_type = FSCK_WARN; - append_msg_id(&sb, msg_id_info[id].id_string); + prepare_msg_ids(); + strbuf_addf(&sb, "%s: ", msg_id_info[msg_id].camelcased); va_start(ap, fmt); strbuf_vaddf(&sb, fmt, ap); result = options->error_func(options, oid, object_type, - msg_type, sb.buf); + msg_type, msg_id, sb.buf); strbuf_release(&sb); va_end(ap); @@ -685,7 +603,7 @@ static int fsck_tree(const struct object_id *oid, if (is_hfs_dotgitmodules(name) || is_ntfs_dotgitmodules(name)) { if (!S_ISLNK(mode)) - oidset_insert(&gitmodules_found, oid); + oidset_insert(&options->gitmodules_found, oid); else retval += report(options, oid, OBJ_TREE, @@ -699,7 +617,7 @@ static int fsck_tree(const struct object_id *oid, has_dotgit |= is_ntfs_dotgit(backslash); if (is_ntfs_dotgitmodules(backslash)) { if (!S_ISLNK(mode)) - oidset_insert(&gitmodules_found, oid); + oidset_insert(&options->gitmodules_found, oid); else retval += report(options, oid, OBJ_TREE, FSCK_MSG_GITMODULES_SYMLINK, @@ -1211,9 +1129,9 @@ static int fsck_blob(const struct object_id *oid, const char *buf, struct fsck_gitmodules_data data; struct config_options config_opts = { 0 }; - if (!oidset_contains(&gitmodules_found, oid)) + if (!oidset_contains(&options->gitmodules_found, oid)) return 0; - oidset_insert(&gitmodules_done, oid); + oidset_insert(&options->gitmodules_done, oid); if (object_on_skiplist(options, oid)) return 0; @@ -1266,7 +1184,9 @@ int fsck_object(struct object *obj, void *data, unsigned long size, int fsck_error_function(struct fsck_options *o, const struct object_id *oid, enum object_type object_type, - int msg_type, const char *message) + enum fsck_msg_type msg_type, + enum fsck_msg_id msg_id, + const char *message) { if (msg_type == FSCK_WARN) { warning("object %s: %s", fsck_describe_object(o, oid), message); @@ -1276,24 +1196,19 @@ int fsck_error_function(struct fsck_options *o, return 1; } -void register_found_gitmodules(const struct object_id *oid) -{ - oidset_insert(&gitmodules_found, oid); -} - int fsck_finish(struct fsck_options *options) { int ret = 0; struct oidset_iter iter; const struct object_id *oid; - oidset_iter_init(&gitmodules_found, &iter); + oidset_iter_init(&options->gitmodules_found, &iter); while ((oid = oidset_iter_next(&iter))) { enum object_type type; unsigned long size; char *buf; - if (oidset_contains(&gitmodules_done, oid)) + if (oidset_contains(&options->gitmodules_done, oid)) continue; buf = read_object_file(oid, &type, &size); @@ -1318,14 +1233,14 @@ int fsck_finish(struct fsck_options *options) } - oidset_clear(&gitmodules_found); - oidset_clear(&gitmodules_done); + oidset_clear(&options->gitmodules_found); + oidset_clear(&options->gitmodules_done); return ret; } -int fsck_config_internal(const char *var, const char *value, void *cb, - struct fsck_options *options) +int git_fsck_config(const char *var, const char *value, void *cb) { + struct fsck_options *options = cb; if (strcmp(var, "fsck.skiplist") == 0) { const char *path; struct strbuf sb = STRBUF_INIT; @@ -1346,3 +1261,21 @@ int fsck_config_internal(const char *var, const char *value, void *cb, return git_default_config(var, value, cb); } + +/* + * Custom error callbacks that are used in more than one place. + */ + +int fsck_error_cb_print_missing_gitmodules(struct fsck_options *o, + const struct object_id *oid, + enum object_type object_type, + enum fsck_msg_type msg_type, + enum fsck_msg_id msg_id, + const char *message) +{ + if (msg_id == FSCK_MSG_GITMODULES_MISSING) { + puts(oid_to_hex(oid)); + return 0; + } + return fsck_error_function(o, oid, object_type, msg_type, msg_id, message); +} @@ -3,15 +3,90 @@ #include "oidset.h" -#define FSCK_ERROR 1 -#define FSCK_WARN 2 -#define FSCK_IGNORE 3 +enum fsck_msg_type { + /* for internal use only */ + FSCK_IGNORE, + FSCK_INFO, + FSCK_FATAL, + /* "public", fed to e.g. error_func callbacks */ + FSCK_ERROR, + FSCK_WARN, +}; + +#define FOREACH_FSCK_MSG_ID(FUNC) \ + /* fatal errors */ \ + FUNC(NUL_IN_HEADER, FATAL) \ + FUNC(UNTERMINATED_HEADER, FATAL) \ + /* errors */ \ + FUNC(BAD_DATE, ERROR) \ + FUNC(BAD_DATE_OVERFLOW, ERROR) \ + FUNC(BAD_EMAIL, ERROR) \ + FUNC(BAD_NAME, ERROR) \ + FUNC(BAD_OBJECT_SHA1, ERROR) \ + FUNC(BAD_PARENT_SHA1, ERROR) \ + FUNC(BAD_TAG_OBJECT, ERROR) \ + FUNC(BAD_TIMEZONE, ERROR) \ + FUNC(BAD_TREE, ERROR) \ + FUNC(BAD_TREE_SHA1, ERROR) \ + FUNC(BAD_TYPE, ERROR) \ + FUNC(DUPLICATE_ENTRIES, ERROR) \ + FUNC(MISSING_AUTHOR, ERROR) \ + FUNC(MISSING_COMMITTER, ERROR) \ + FUNC(MISSING_EMAIL, ERROR) \ + FUNC(MISSING_NAME_BEFORE_EMAIL, ERROR) \ + FUNC(MISSING_OBJECT, ERROR) \ + FUNC(MISSING_SPACE_BEFORE_DATE, ERROR) \ + FUNC(MISSING_SPACE_BEFORE_EMAIL, ERROR) \ + FUNC(MISSING_TAG, ERROR) \ + FUNC(MISSING_TAG_ENTRY, ERROR) \ + FUNC(MISSING_TREE, ERROR) \ + FUNC(MISSING_TREE_OBJECT, ERROR) \ + FUNC(MISSING_TYPE, ERROR) \ + FUNC(MISSING_TYPE_ENTRY, ERROR) \ + FUNC(MULTIPLE_AUTHORS, ERROR) \ + FUNC(TREE_NOT_SORTED, ERROR) \ + FUNC(UNKNOWN_TYPE, ERROR) \ + FUNC(ZERO_PADDED_DATE, ERROR) \ + FUNC(GITMODULES_MISSING, ERROR) \ + FUNC(GITMODULES_BLOB, ERROR) \ + FUNC(GITMODULES_LARGE, ERROR) \ + FUNC(GITMODULES_NAME, ERROR) \ + FUNC(GITMODULES_SYMLINK, ERROR) \ + FUNC(GITMODULES_URL, ERROR) \ + FUNC(GITMODULES_PATH, ERROR) \ + FUNC(GITMODULES_UPDATE, ERROR) \ + /* warnings */ \ + FUNC(BAD_FILEMODE, WARN) \ + FUNC(EMPTY_NAME, WARN) \ + FUNC(FULL_PATHNAME, WARN) \ + FUNC(HAS_DOT, WARN) \ + FUNC(HAS_DOTDOT, WARN) \ + FUNC(HAS_DOTGIT, WARN) \ + FUNC(NULL_SHA1, WARN) \ + FUNC(ZERO_PADDED_FILEMODE, WARN) \ + FUNC(NUL_IN_COMMIT, WARN) \ + /* infos (reported as warnings, but ignored by default) */ \ + FUNC(GITMODULES_PARSE, INFO) \ + FUNC(BAD_TAG_NAME, INFO) \ + FUNC(MISSING_TAGGER_ENTRY, INFO) \ + /* ignored (elevated when requested) */ \ + FUNC(EXTRA_HEADER_ENTRY, IGNORE) + +#define MSG_ID(id, msg_type) FSCK_MSG_##id, +enum fsck_msg_id { + FOREACH_FSCK_MSG_ID(MSG_ID) + FSCK_MSG_MAX +}; +#undef MSG_ID struct fsck_options; struct object; +void fsck_set_msg_type_from_ids(struct fsck_options *options, + enum fsck_msg_id msg_id, + enum fsck_msg_type msg_type); void fsck_set_msg_type(struct fsck_options *options, - const char *msg_id, const char *msg_type); + const char *msg_id, const char *msg_type); void fsck_set_msg_types(struct fsck_options *options, const char *values); int is_valid_msg_type(const char *msg_id, const char *msg_type); @@ -23,28 +98,55 @@ int is_valid_msg_type(const char *msg_id, const char *msg_type); * <0 error signaled and abort * >0 error signaled and do not abort */ -typedef int (*fsck_walk_func)(struct object *obj, int type, void *data, struct fsck_options *options); +typedef int (*fsck_walk_func)(struct object *obj, enum object_type object_type, + void *data, struct fsck_options *options); /* callback for fsck_object, type is FSCK_ERROR or FSCK_WARN */ typedef int (*fsck_error)(struct fsck_options *o, const struct object_id *oid, enum object_type object_type, - int msg_type, const char *message); + enum fsck_msg_type msg_type, enum fsck_msg_id msg_id, + const char *message); int fsck_error_function(struct fsck_options *o, const struct object_id *oid, enum object_type object_type, - int msg_type, const char *message); + enum fsck_msg_type msg_type, enum fsck_msg_id msg_id, + const char *message); +int fsck_error_cb_print_missing_gitmodules(struct fsck_options *o, + const struct object_id *oid, + enum object_type object_type, + enum fsck_msg_type msg_type, + enum fsck_msg_id msg_id, + const char *message); struct fsck_options { fsck_walk_func walk; fsck_error error_func; unsigned strict:1; - int *msg_type; + enum fsck_msg_type *msg_type; struct oidset skiplist; + struct oidset gitmodules_found; + struct oidset gitmodules_done; kh_oid_map_t *object_names; }; -#define FSCK_OPTIONS_DEFAULT { NULL, fsck_error_function, 0, NULL, OIDSET_INIT } -#define FSCK_OPTIONS_STRICT { NULL, fsck_error_function, 1, NULL, OIDSET_INIT } +#define FSCK_OPTIONS_DEFAULT { \ + .skiplist = OIDSET_INIT, \ + .gitmodules_found = OIDSET_INIT, \ + .gitmodules_done = OIDSET_INIT, \ + .error_func = fsck_error_function \ +} +#define FSCK_OPTIONS_STRICT { \ + .strict = 1, \ + .gitmodules_found = OIDSET_INIT, \ + .gitmodules_done = OIDSET_INIT, \ + .error_func = fsck_error_function, \ +} +#define FSCK_OPTIONS_MISSING_GITMODULES { \ + .strict = 1, \ + .gitmodules_found = OIDSET_INIT, \ + .gitmodules_done = OIDSET_INIT, \ + .error_func = fsck_error_cb_print_missing_gitmodules, \ +} /* descend in all linked child objects * the return value is: @@ -62,8 +164,6 @@ int fsck_walk(struct object *obj, void *data, struct fsck_options *options); int fsck_object(struct object *obj, void *data, unsigned long size, struct fsck_options *options); -void register_found_gitmodules(const struct object_id *oid); - /* * fsck a tag, and pass info about it back to the caller. This is * exposed fsck_object() internals for git-mktag(1). @@ -109,7 +209,6 @@ const char *fsck_describe_object(struct fsck_options *options, * git_config() callback for use by fsck-y tools that want to support * fsck.<msg> fsck.skipList etc. */ -int fsck_config_internal(const char *var, const char *value, void *cb, - struct fsck_options *options); +int git_fsck_config(const char *var, const char *value, void *cb); #endif diff --git a/git-compat-util.h b/git-compat-util.h index 9ddf9d7..a508dbe 100644 --- a/git-compat-util.h +++ b/git-compat-util.h @@ -256,6 +256,11 @@ static inline const char *precompose_argv_prefix(int argc, const char **argv, co { return prefix; } +static inline const char *precompose_string_if_needed(const char *in) +{ + return in; +} + #define probe_utf8_pathname_composition() #endif @@ -423,7 +423,7 @@ static int run_builtin(struct cmd_struct *p, int argc, const char **argv) int nongit_ok; prefix = setup_git_directory_gently(&nongit_ok); } - prefix = precompose_argv_prefix(argc, argv, prefix); + precompose_argv_prefix(argc, argv, NULL); if (use_pager == -1 && p->option & (RUN_SETUP | RUN_SETUP_GENTLY) && !(p->option & DELAY_PAGER_CONFIG)) use_pager = check_pager_config(p->cmd); @@ -369,8 +369,14 @@ void fmt_output_subject(struct strbuf *filename, int start_len = filename->len; int max_len = start_len + info->patch_name_max - (strlen(suffix) + 1); - if (0 < info->reroll_count) - strbuf_addf(filename, "v%d-", info->reroll_count); + if (info->reroll_count) { + struct strbuf temp = STRBUF_INIT; + + strbuf_addf(&temp, "v%s", info->reroll_count); + format_sanitized_subject(filename, temp.buf, temp.len); + strbuf_addstr(filename, "-"); + strbuf_release(&temp); + } strbuf_addf(filename, "%04d-%s", nr, subject); if (max_len < filename->len) diff --git a/merge-ort.c b/merge-ort.c index ba35600..5e118a8 100644 --- a/merge-ort.c +++ b/merge-ort.c @@ -51,6 +51,12 @@ enum merge_side { MERGE_SIDE2 = 2 }; +struct traversal_callback_data { + unsigned long mask; + unsigned long dirmask; + struct name_entry names[3]; +}; + struct rename_info { /* * All variables that are arrays of size 3 correspond to data tracked @@ -89,6 +95,44 @@ struct rename_info { struct strmap dir_renames[3]; /* + * relevant_sources: deleted paths for which we need rename detection + * + * relevant_sources is a set of deleted paths on each side of + * history for which we need rename detection. If a path is deleted + * on one side of history, we need to detect if it is part of a + * rename if either + * * we need to detect renames for an ancestor directory + * * the file is modified/deleted on the other side of history + * If neither of those are true, we can skip rename detection for + * that path. + */ + struct strset relevant_sources[3]; + + /* + * dir_rename_mask: + * 0: optimization removing unmodified potential rename source okay + * 2 or 4: optimization okay, but must check for files added to dir + * 7: optimization forbidden; need rename source in case of dir rename + */ + unsigned dir_rename_mask:3; + + /* + * callback_data_*: supporting data structures for alternate traversal + * + * We sometimes need to be able to traverse through all the files + * in a given tree before all immediate subdirectories within that + * tree. Since traverse_trees() doesn't do that naturally, we have + * a traverse_trees_wrapper() that stores any immediate + * subdirectories while traversing files, then traverses the + * immediate subdirectories later. These callback_data* variables + * store the information for the subdirectories so that we can do + * that traversal order. + */ + struct traversal_callback_data *callback_data; + int callback_data_nr, callback_data_alloc; + char *callback_data_traverse_path; + + /* * needed_limit: value needed for inexact rename detection to run * * If the current rename limit wasn't high enough for inexact @@ -358,6 +402,8 @@ static void clear_or_reinit_internal_opts(struct merge_options_internal *opti, strmap_clear(&renames->dir_rename_count[i], 1); strmap_func(&renames->dir_renames[i], 0); + + strset_func(&renames->relevant_sources[i]); } if (!reinitialize) { @@ -380,6 +426,12 @@ static void clear_or_reinit_internal_opts(struct merge_options_internal *opti, } strmap_clear(&opti->output, 0); } + + renames->dir_rename_mask = 0; + + /* Clean out callback_data as well. */ + FREE_AND_NULL(renames->callback_data); + renames->callback_data_nr = renames->callback_data_alloc = 0; } static int err(struct merge_options *opt, const char *err, ...) @@ -470,6 +522,82 @@ static char *unique_path(struct strmap *existing_paths, /*** Function Grouping: functions related to collect_merge_info() ***/ +static int traverse_trees_wrapper_callback(int n, + unsigned long mask, + unsigned long dirmask, + struct name_entry *names, + struct traverse_info *info) +{ + struct merge_options *opt = info->data; + struct rename_info *renames = &opt->priv->renames; + unsigned filemask = mask & ~dirmask; + + assert(n==3); + + if (!renames->callback_data_traverse_path) + renames->callback_data_traverse_path = xstrdup(info->traverse_path); + + if (filemask && filemask == renames->dir_rename_mask) + renames->dir_rename_mask = 0x07; + + ALLOC_GROW(renames->callback_data, renames->callback_data_nr + 1, + renames->callback_data_alloc); + renames->callback_data[renames->callback_data_nr].mask = mask; + renames->callback_data[renames->callback_data_nr].dirmask = dirmask; + COPY_ARRAY(renames->callback_data[renames->callback_data_nr].names, + names, 3); + renames->callback_data_nr++; + + return mask; +} + +/* + * Much like traverse_trees(), BUT: + * - read all the tree entries FIRST, saving them + * - note that the above step provides an opportunity to compute necessary + * additional details before the "real" traversal + * - loop through the saved entries and call the original callback on them + */ +static int traverse_trees_wrapper(struct index_state *istate, + int n, + struct tree_desc *t, + struct traverse_info *info) +{ + int ret, i, old_offset; + traverse_callback_t old_fn; + char *old_callback_data_traverse_path; + struct merge_options *opt = info->data; + struct rename_info *renames = &opt->priv->renames; + + assert(renames->dir_rename_mask == 2 || renames->dir_rename_mask == 4); + + old_callback_data_traverse_path = renames->callback_data_traverse_path; + old_fn = info->fn; + old_offset = renames->callback_data_nr; + + renames->callback_data_traverse_path = NULL; + info->fn = traverse_trees_wrapper_callback; + ret = traverse_trees(istate, n, t, info); + if (ret < 0) + return ret; + + info->traverse_path = renames->callback_data_traverse_path; + info->fn = old_fn; + for (i = old_offset; i < renames->callback_data_nr; ++i) { + info->fn(n, + renames->callback_data[i].mask, + renames->callback_data[i].dirmask, + renames->callback_data[i].names, + info); + } + + renames->callback_data_nr = old_offset; + free(renames->callback_data_traverse_path); + renames->callback_data_traverse_path = old_callback_data_traverse_path; + info->traverse_path = NULL; + return 0; +} + static void setup_path_info(struct merge_options *opt, struct string_list_item *result, const char *current_dir_name, @@ -533,12 +661,22 @@ static void add_pair(struct merge_options *opt, struct name_entry *names, const char *pathname, unsigned side, - unsigned is_add /* if false, is_delete */) + unsigned is_add /* if false, is_delete */, + unsigned match_mask, + unsigned dir_rename_mask) { struct diff_filespec *one, *two; struct rename_info *renames = &opt->priv->renames; int names_idx = is_add ? side : 0; + if (!is_add) { + unsigned content_relevant = (match_mask == 0); + unsigned location_relevant = (dir_rename_mask == 0x07); + + if (content_relevant || location_relevant) + strset_add(&renames->relevant_sources[side], pathname); + } + one = alloc_filespec(pathname); two = alloc_filespec(pathname); fill_filespec(is_add ? two : one, @@ -557,6 +695,36 @@ static void collect_rename_info(struct merge_options *opt, struct rename_info *renames = &opt->priv->renames; unsigned side; + /* + * Update dir_rename_mask (determines ignore-rename-source validity) + * + * dir_rename_mask helps us keep track of when directory rename + * detection may be relevant. Basically, whenver a directory is + * removed on one side of history, and a file is added to that + * directory on the other side of history, directory rename + * detection is relevant (meaning we have to detect renames for all + * files within that directory to deduce where the directory + * moved). Also, whenever a directory needs directory rename + * detection, due to the "majority rules" choice for where to move + * it (see t6423 testcase 1f), we also need to detect renames for + * all files within subdirectories of that directory as well. + * + * Here we haven't looked at files within the directory yet, we are + * just looking at the directory itself. So, if we aren't yet in + * a case where a parent directory needed directory rename detection + * (i.e. dir_rename_mask != 0x07), and if the directory was removed + * on one side of history, record the mask of the other side of + * history in dir_rename_mask. + */ + if (renames->dir_rename_mask != 0x07 && + (dirmask == 3 || dirmask == 5)) { + /* simple sanity check */ + assert(renames->dir_rename_mask == 0 || + renames->dir_rename_mask == (dirmask & ~1)); + /* update dir_rename_mask; have it record mask of new side */ + renames->dir_rename_mask = (dirmask & ~1); + } + /* Update dirs_removed, as needed */ if (dirmask == 1 || dirmask == 3 || dirmask == 5) { /* absent_mask = 0x07 - dirmask; sides = absent_mask/2 */ @@ -575,11 +743,15 @@ static void collect_rename_info(struct merge_options *opt, /* Check for deletion on side */ if ((filemask & 1) && !(filemask & side_mask)) - add_pair(opt, names, fullname, side, 0 /* delete */); + add_pair(opt, names, fullname, side, 0 /* delete */, + match_mask & filemask, + renames->dir_rename_mask); /* Check for addition on side */ if (!(filemask & 1) && (filemask & side_mask)) - add_pair(opt, names, fullname, side, 1 /* add */); + add_pair(opt, names, fullname, side, 1 /* add */, + match_mask & filemask, + renames->dir_rename_mask); } } @@ -597,12 +769,14 @@ static int collect_merge_info_callback(int n, */ struct merge_options *opt = info->data; struct merge_options_internal *opti = opt->priv; + struct rename_info *renames = &opt->priv->renames; struct string_list_item pi; /* Path Info */ struct conflict_info *ci; /* typed alias to pi.util (which is void*) */ struct name_entry *p; size_t len; char *fullpath; const char *dirname = opti->current_dir_name; + unsigned prev_dir_rename_mask = renames->dir_rename_mask; unsigned filemask = mask & ~dirmask; unsigned match_mask = 0; /* will be updated below */ unsigned mbase_null = !(mask & 1); @@ -743,8 +917,13 @@ static int collect_merge_info_callback(int n, original_dir_name = opti->current_dir_name; opti->current_dir_name = pi.string; - ret = traverse_trees(NULL, 3, t, &newinfo); + if (renames->dir_rename_mask == 0 || + renames->dir_rename_mask == 0x07) + ret = traverse_trees(NULL, 3, t, &newinfo); + else + ret = traverse_trees_wrapper(NULL, 3, t, &newinfo); opti->current_dir_name = original_dir_name; + renames->dir_rename_mask = prev_dir_rename_mask; for (i = MERGE_BASE; i <= MERGE_SIDE2; i++) free(buf[i]); @@ -1977,6 +2156,19 @@ static int process_renames(struct merge_options *opt, return clean_merge; } +static inline int possible_side_renames(struct rename_info *renames, + unsigned side_index) +{ + return renames->pairs[side_index].nr > 0 && + !strset_empty(&renames->relevant_sources[side_index]); +} + +static inline int possible_renames(struct rename_info *renames) +{ + return possible_side_renames(renames, 1) || + possible_side_renames(renames, 2); +} + static void resolve_diffpair_statuses(struct diff_queue_struct *q) { /* @@ -2013,6 +2205,16 @@ static void detect_regular_renames(struct merge_options *opt, struct diff_options diff_opts; struct rename_info *renames = &opt->priv->renames; + if (!possible_side_renames(renames, side_index)) { + /* + * No rename detection needed for this side, but we still need + * to make sure 'adds' are marked correctly in case the other + * side had directory renames. + */ + resolve_diffpair_statuses(&renames->pairs[side_index]); + return; + } + repo_diff_setup(opt->repo, &diff_opts); diff_opts.flags.recursive = 1; diff_opts.flags.rename_empty = 0; @@ -2028,6 +2230,7 @@ static void detect_regular_renames(struct merge_options *opt, diff_queued_diff = renames->pairs[side_index]; trace2_region_enter("diff", "diffcore_rename", opt->repo); diffcore_rename_extended(&diff_opts, + &renames->relevant_sources[side_index], &renames->dirs_removed[side_index], &renames->dir_rename_count[side_index]); trace2_region_leave("diff", "diffcore_rename", opt->repo); @@ -2129,6 +2332,8 @@ static int detect_and_process_renames(struct merge_options *opt, int need_dir_renames, s, clean = 1; memset(&combined, 0, sizeof(combined)); + if (!possible_renames(renames)) + goto cleanup; trace2_region_enter("merge", "regular renames", opt->repo); detect_regular_renames(opt, MERGE_SIDE1); @@ -2163,6 +2368,25 @@ static int detect_and_process_renames(struct merge_options *opt, clean &= process_renames(opt, &combined); trace2_region_leave("merge", "process renames", opt->repo); + goto simple_cleanup; /* collect_renames() handles some of cleanup */ + +cleanup: + /* + * Free now unneeded filepairs, which would have been handled + * in collect_renames() normally but we skipped that code. + */ + for (s = MERGE_SIDE1; s <= MERGE_SIDE2; s++) { + struct diff_queue_struct *side_pairs; + int i; + + side_pairs = &renames->pairs[s]; + for (i = 0; i < side_pairs->nr; ++i) { + struct diff_filepair *p = side_pairs->queue[i]; + diff_free_filepair(p); + } + } + +simple_cleanup: /* Free memory for renames->pairs[] and combined */ for (s = MERGE_SIDE1; s <= MERGE_SIDE2; s++) { free(renames->pairs[s].queue); @@ -3226,6 +3450,8 @@ static void merge_start(struct merge_options *opt, struct merge_result *result) NULL, 1); strmap_init_with_options(&renames->dir_renames[i], NULL, 0); + strset_init_with_options(&renames->relevant_sources[i], + NULL, 0); } /* @@ -12,6 +12,7 @@ #include "run-command.h" #include "repository.h" #include "chunk-format.h" +#include "pack.h" #define MIDX_SIGNATURE 0x4d494458 /* "MIDX" */ #define MIDX_VERSION 1 @@ -47,11 +48,22 @@ static uint8_t oid_version(void) } } +static const unsigned char *get_midx_checksum(struct multi_pack_index *m) +{ + return m->data + m->data_len - the_hash_algo->rawsz; +} + static char *get_midx_filename(const char *object_dir) { return xstrfmt("%s/pack/multi-pack-index", object_dir); } +char *get_midx_rev_filename(struct multi_pack_index *m) +{ + return xstrfmt("%s/pack/multi-pack-index-%s.rev", + m->object_dir, hash_to_hex(get_midx_checksum(m))); +} + static int midx_read_oid_fanout(const unsigned char *chunk_start, size_t chunk_size, void *data) { @@ -239,7 +251,7 @@ struct object_id *nth_midxed_object_oid(struct object_id *oid, return oid; } -static off_t nth_midxed_offset(struct multi_pack_index *m, uint32_t pos) +off_t nth_midxed_offset(struct multi_pack_index *m, uint32_t pos) { const unsigned char *offset_data; uint32_t offset32; @@ -258,7 +270,7 @@ static off_t nth_midxed_offset(struct multi_pack_index *m, uint32_t pos) return offset32; } -static uint32_t nth_midxed_pack_int_id(struct multi_pack_index *m, uint32_t pos) +uint32_t nth_midxed_pack_int_id(struct multi_pack_index *m, uint32_t pos) { return get_be32(m->chunk_object_offsets + (off_t)pos * MIDX_CHUNK_OFFSET_WIDTH); @@ -431,6 +443,14 @@ static int pack_info_compare(const void *_a, const void *_b) return strcmp(a->pack_name, b->pack_name); } +static int idx_or_pack_name_cmp(const void *_va, const void *_vb) +{ + const char *pack_name = _va; + const struct pack_info *compar = _vb; + + return cmp_idx_or_pack_name(pack_name, compar->pack_name); +} + struct write_midx_context { struct pack_info *info; uint32_t nr; @@ -443,8 +463,11 @@ struct write_midx_context { uint32_t entries_nr; uint32_t *pack_perm; + uint32_t *pack_order; unsigned large_offsets_needed:1; uint32_t num_large_offsets; + + int preferred_pack_idx; }; static void add_pack_to_midx(const char *full_path, size_t full_path_len, @@ -489,6 +512,7 @@ struct pack_midx_entry { uint32_t pack_int_id; time_t pack_mtime; uint64_t offset; + unsigned preferred : 1; }; static int midx_oid_compare(const void *_a, const void *_b) @@ -500,6 +524,12 @@ static int midx_oid_compare(const void *_a, const void *_b) if (cmp) return cmp; + /* Sort objects in a preferred pack first when multiple copies exist. */ + if (a->preferred > b->preferred) + return -1; + if (a->preferred < b->preferred) + return 1; + if (a->pack_mtime > b->pack_mtime) return -1; else if (a->pack_mtime < b->pack_mtime) @@ -527,7 +557,8 @@ static int nth_midxed_pack_midx_entry(struct multi_pack_index *m, static void fill_pack_entry(uint32_t pack_int_id, struct packed_git *p, uint32_t cur_object, - struct pack_midx_entry *entry) + struct pack_midx_entry *entry, + int preferred) { if (nth_packed_object_id(&entry->oid, p, cur_object) < 0) die(_("failed to locate object %d in packfile"), cur_object); @@ -536,6 +567,7 @@ static void fill_pack_entry(uint32_t pack_int_id, entry->pack_mtime = p->mtime; entry->offset = nth_packed_object_offset(p, cur_object); + entry->preferred = !!preferred; } /* @@ -552,7 +584,8 @@ static void fill_pack_entry(uint32_t pack_int_id, static struct pack_midx_entry *get_sorted_entries(struct multi_pack_index *m, struct pack_info *info, uint32_t nr_packs, - uint32_t *nr_objects) + uint32_t *nr_objects, + int preferred_pack) { uint32_t cur_fanout, cur_pack, cur_object; uint32_t alloc_fanout, alloc_objects, total_objects = 0; @@ -589,12 +622,17 @@ static struct pack_midx_entry *get_sorted_entries(struct multi_pack_index *m, nth_midxed_pack_midx_entry(m, &entries_by_fanout[nr_fanout], cur_object); + if (nth_midxed_pack_int_id(m, cur_object) == preferred_pack) + entries_by_fanout[nr_fanout].preferred = 1; + else + entries_by_fanout[nr_fanout].preferred = 0; nr_fanout++; } } for (cur_pack = start_pack; cur_pack < nr_packs; cur_pack++) { uint32_t start = 0, end; + int preferred = cur_pack == preferred_pack; if (cur_fanout) start = get_pack_fanout(info[cur_pack].p, cur_fanout - 1); @@ -602,7 +640,11 @@ static struct pack_midx_entry *get_sorted_entries(struct multi_pack_index *m, for (cur_object = start; cur_object < end; cur_object++) { ALLOC_GROW(entries_by_fanout, nr_fanout + 1, alloc_fanout); - fill_pack_entry(cur_pack, info[cur_pack].p, cur_object, &entries_by_fanout[nr_fanout]); + fill_pack_entry(cur_pack, + info[cur_pack].p, + cur_object, + &entries_by_fanout[nr_fanout], + preferred); nr_fanout++; } } @@ -776,10 +818,80 @@ static int write_midx_large_offsets(struct hashfile *f, return 0; } +struct midx_pack_order_data { + uint32_t nr; + uint32_t pack; + off_t offset; +}; + +static int midx_pack_order_cmp(const void *va, const void *vb) +{ + const struct midx_pack_order_data *a = va, *b = vb; + if (a->pack < b->pack) + return -1; + else if (a->pack > b->pack) + return 1; + else if (a->offset < b->offset) + return -1; + else if (a->offset > b->offset) + return 1; + else + return 0; +} + +static uint32_t *midx_pack_order(struct write_midx_context *ctx) +{ + struct midx_pack_order_data *data; + uint32_t *pack_order; + uint32_t i; + + ALLOC_ARRAY(data, ctx->entries_nr); + for (i = 0; i < ctx->entries_nr; i++) { + struct pack_midx_entry *e = &ctx->entries[i]; + data[i].nr = i; + data[i].pack = ctx->pack_perm[e->pack_int_id]; + if (!e->preferred) + data[i].pack |= (1U << 31); + data[i].offset = e->offset; + } + + QSORT(data, ctx->entries_nr, midx_pack_order_cmp); + + ALLOC_ARRAY(pack_order, ctx->entries_nr); + for (i = 0; i < ctx->entries_nr; i++) + pack_order[i] = data[i].nr; + free(data); + + return pack_order; +} + +static void write_midx_reverse_index(char *midx_name, unsigned char *midx_hash, + struct write_midx_context *ctx) +{ + struct strbuf buf = STRBUF_INIT; + const char *tmp_file; + + strbuf_addf(&buf, "%s-%s.rev", midx_name, hash_to_hex(midx_hash)); + + tmp_file = write_rev_file_order(NULL, ctx->pack_order, ctx->entries_nr, + midx_hash, WRITE_REV); + + if (finalize_object_file(tmp_file, buf.buf)) + die(_("cannot store reverse index file")); + + strbuf_release(&buf); +} + +static void clear_midx_files_ext(struct repository *r, const char *ext, + unsigned char *keep_hash); + static int write_midx_internal(const char *object_dir, struct multi_pack_index *m, - struct string_list *packs_to_drop, unsigned flags) + struct string_list *packs_to_drop, + const char *preferred_pack_name, + unsigned flags) { char *midx_name; + unsigned char midx_hash[GIT_MAX_RAWSZ]; uint32_t i; struct hashfile *f = NULL; struct lock_file lk; @@ -828,7 +940,19 @@ static int write_midx_internal(const char *object_dir, struct multi_pack_index * if (ctx.m && ctx.nr == ctx.m->num_packs && !packs_to_drop) goto cleanup; - ctx.entries = get_sorted_entries(ctx.m, ctx.info, ctx.nr, &ctx.entries_nr); + ctx.preferred_pack_idx = -1; + if (preferred_pack_name) { + for (i = 0; i < ctx.nr; i++) { + if (!cmp_idx_or_pack_name(preferred_pack_name, + ctx.info[i].pack_name)) { + ctx.preferred_pack_idx = i; + break; + } + } + } + + ctx.entries = get_sorted_entries(ctx.m, ctx.info, ctx.nr, &ctx.entries_nr, + ctx.preferred_pack_idx); ctx.large_offsets_needed = 0; for (i = 0; i < ctx.entries_nr; i++) { @@ -889,13 +1013,30 @@ static int write_midx_internal(const char *object_dir, struct multi_pack_index * pack_name_concat_len += strlen(ctx.info[i].pack_name) + 1; } + /* Check that the preferred pack wasn't expired (if given). */ + if (preferred_pack_name) { + struct pack_info *preferred = bsearch(preferred_pack_name, + ctx.info, ctx.nr, + sizeof(*ctx.info), + idx_or_pack_name_cmp); + + if (!preferred) + warning(_("unknown preferred pack: '%s'"), + preferred_pack_name); + else { + uint32_t perm = ctx.pack_perm[preferred->orig_pack_int_id]; + if (perm == PACK_EXPIRED) + warning(_("preferred pack '%s' is expired"), + preferred_pack_name); + } + } + if (pack_name_concat_len % MIDX_CHUNK_ALIGNMENT) pack_name_concat_len += MIDX_CHUNK_ALIGNMENT - (pack_name_concat_len % MIDX_CHUNK_ALIGNMENT); hold_lock_file_for_update(&lk, midx_name, LOCK_DIE_ON_ERROR); f = hashfd(get_lock_file_fd(&lk), get_lock_file_path(&lk)); - FREE_AND_NULL(midx_name); if (ctx.m) close_midx(ctx.m); @@ -927,8 +1068,16 @@ static int write_midx_internal(const char *object_dir, struct multi_pack_index * write_midx_header(f, get_num_chunks(cf), ctx.nr - dropped_packs); write_chunkfile(cf, &ctx); - finalize_hashfile(f, NULL, CSUM_FSYNC | CSUM_HASH_IN_STREAM); + finalize_hashfile(f, midx_hash, CSUM_FSYNC | CSUM_HASH_IN_STREAM); free_chunkfile(cf); + + if (flags & MIDX_WRITE_REV_INDEX) + ctx.pack_order = midx_pack_order(&ctx); + + if (flags & MIDX_WRITE_REV_INDEX) + write_midx_reverse_index(midx_name, midx_hash, &ctx); + clear_midx_files_ext(the_repository, ".rev", midx_hash); + commit_lock_file(&lk); cleanup: @@ -943,13 +1092,55 @@ cleanup: free(ctx.info); free(ctx.entries); free(ctx.pack_perm); + free(ctx.pack_order); free(midx_name); return result; } -int write_midx_file(const char *object_dir, unsigned flags) +int write_midx_file(const char *object_dir, + const char *preferred_pack_name, + unsigned flags) { - return write_midx_internal(object_dir, NULL, NULL, flags); + return write_midx_internal(object_dir, NULL, NULL, preferred_pack_name, + flags); +} + +struct clear_midx_data { + char *keep; + const char *ext; +}; + +static void clear_midx_file_ext(const char *full_path, size_t full_path_len, + const char *file_name, void *_data) +{ + struct clear_midx_data *data = _data; + + if (!(starts_with(file_name, "multi-pack-index-") && + ends_with(file_name, data->ext))) + return; + if (data->keep && !strcmp(data->keep, file_name)) + return; + + if (unlink(full_path)) + die_errno(_("failed to remove %s"), full_path); +} + +static void clear_midx_files_ext(struct repository *r, const char *ext, + unsigned char *keep_hash) +{ + struct clear_midx_data data; + memset(&data, 0, sizeof(struct clear_midx_data)); + + if (keep_hash) + data.keep = xstrfmt("multi-pack-index-%s%s", + hash_to_hex(keep_hash), ext); + data.ext = ext; + + for_each_file_in_pack_dir(r->objects->odb->path, + clear_midx_file_ext, + &data); + + free(data.keep); } void clear_midx_file(struct repository *r) @@ -964,6 +1155,8 @@ void clear_midx_file(struct repository *r) if (remove_path(midx)) die(_("failed to clear multi-pack-index at %s"), midx); + clear_midx_files_ext(r, ".rev", NULL); + free(midx); } @@ -1184,7 +1377,7 @@ int expire_midx_packs(struct repository *r, const char *object_dir, unsigned fla free(count); if (packs_to_drop.nr) - result = write_midx_internal(object_dir, m, &packs_to_drop, flags); + result = write_midx_internal(object_dir, m, &packs_to_drop, NULL, flags); string_list_clear(&packs_to_drop, 0); return result; @@ -1373,7 +1566,7 @@ int midx_repack(struct repository *r, const char *object_dir, size_t batch_size, goto cleanup; } - result = write_midx_internal(object_dir, m, NULL, flags); + result = write_midx_internal(object_dir, m, NULL, NULL, flags); m = NULL; cleanup: @@ -15,6 +15,10 @@ struct multi_pack_index { const unsigned char *data; size_t data_len; + const uint32_t *revindex_data; + const uint32_t *revindex_map; + size_t revindex_len; + uint32_t signature; unsigned char version; unsigned char hash_len; @@ -36,10 +40,15 @@ struct multi_pack_index { }; #define MIDX_PROGRESS (1 << 0) +#define MIDX_WRITE_REV_INDEX (1 << 1) + +char *get_midx_rev_filename(struct multi_pack_index *m); struct multi_pack_index *load_multi_pack_index(const char *object_dir, int local); int prepare_midx_pack(struct repository *r, struct multi_pack_index *m, uint32_t pack_int_id); int bsearch_midx(const struct object_id *oid, struct multi_pack_index *m, uint32_t *result); +off_t nth_midxed_offset(struct multi_pack_index *m, uint32_t pos); +uint32_t nth_midxed_pack_int_id(struct multi_pack_index *m, uint32_t pos); struct object_id *nth_midxed_object_oid(struct object_id *oid, struct multi_pack_index *m, uint32_t n); @@ -47,7 +56,7 @@ int fill_midx_entry(struct repository *r, const struct object_id *oid, struct pa int midx_contains_pack(struct multi_pack_index *m, const char *idx_or_pack_name); int prepare_multi_pack_index_one(struct repository *r, const char *object_dir, int local); -int write_midx_file(const char *object_dir, unsigned flags); +int write_midx_file(const char *object_dir, const char *preferred_pack_name, unsigned flags); void clear_midx_file(struct repository *r); int verify_midx_file(struct repository *r, const char *object_dir, unsigned flags); int expire_midx_packs(struct repository *r, const char *object_dir, unsigned flags); diff --git a/pack-bitmap.c b/pack-bitmap.c index 1ebe0c8..3ed1543 100644 --- a/pack-bitmap.c +++ b/pack-bitmap.c @@ -13,6 +13,7 @@ #include "repository.h" #include "object-store.h" #include "list-objects-filter-options.h" +#include "config.h" /* * An entry on the bitmap index, representing the bitmap for a given @@ -997,6 +998,7 @@ struct bitmap_index *prepare_bitmap_walk(struct rev_info *revs, object_list_insert(object, &wants); object = parse_object_or_die(get_tagged_oid(tag), NULL); + object->flags |= (tag->object.flags & UNINTERESTING); } if (object->flags & UNINTERESTING) @@ -1350,6 +1352,24 @@ void test_bitmap_walk(struct rev_info *revs) free_bitmap_index(bitmap_git); } +int test_bitmap_commits(struct repository *r) +{ + struct bitmap_index *bitmap_git = prepare_bitmap_git(r); + struct object_id oid; + MAYBE_UNUSED void *value; + + if (!bitmap_git) + die("failed to load bitmap indexes"); + + kh_foreach(bitmap_git->bitmaps, oid, value, { + printf("%s\n", oid_to_hex(&oid)); + }); + + free_bitmap_index(bitmap_git); + + return 0; +} + int rebuild_bitmap(const uint32_t *reposition, struct ewah_bitmap *source, struct bitmap *dest) @@ -1511,3 +1531,8 @@ off_t get_disk_usage_from_bitmap(struct bitmap_index *bitmap_git, return total; } + +const struct string_list *bitmap_preferred_tips(struct repository *r) +{ + return repo_config_get_value_multi(r, "pack.preferbitmaptips"); +} diff --git a/pack-bitmap.h b/pack-bitmap.h index 36d9993..78f2b3f 100644 --- a/pack-bitmap.h +++ b/pack-bitmap.h @@ -5,6 +5,7 @@ #include "khash.h" #include "pack.h" #include "pack-objects.h" +#include "string-list.h" struct commit; struct repository; @@ -49,6 +50,7 @@ void traverse_bitmap_commit_list(struct bitmap_index *, struct rev_info *revs, show_reachable_fn show_reachable); void test_bitmap_walk(struct rev_info *revs); +int test_bitmap_commits(struct repository *r); struct bitmap_index *prepare_bitmap_walk(struct rev_info *revs, struct list_objects_filter_options *filter); int reuse_partial_packfile_from_bitmap(struct bitmap_index *, @@ -90,4 +92,6 @@ void bitmap_writer_finish(struct pack_idx_entry **index, const char *filename, uint16_t options); +const struct string_list *bitmap_preferred_tips(struct repository *r); + #endif diff --git a/pack-revindex.c b/pack-revindex.c index 4262530..0e4a31d 100644 --- a/pack-revindex.c +++ b/pack-revindex.c @@ -3,6 +3,7 @@ #include "object-store.h" #include "packfile.h" #include "config.h" +#include "midx.h" struct revindex_entry { off_t offset; @@ -293,6 +294,43 @@ int load_pack_revindex(struct packed_git *p) return -1; } +int load_midx_revindex(struct multi_pack_index *m) +{ + char *revindex_name; + int ret; + if (m->revindex_data) + return 0; + + revindex_name = get_midx_rev_filename(m); + + ret = load_revindex_from_disk(revindex_name, + m->num_objects, + &m->revindex_map, + &m->revindex_len); + if (ret) + goto cleanup; + + m->revindex_data = (const uint32_t *)((const char *)m->revindex_map + RIDX_HEADER_SIZE); + +cleanup: + free(revindex_name); + return ret; +} + +int close_midx_revindex(struct multi_pack_index *m) +{ + if (!m || !m->revindex_map) + return 0; + + munmap((void*)m->revindex_map, m->revindex_len); + + m->revindex_map = NULL; + m->revindex_data = NULL; + m->revindex_len = 0; + + return 0; +} + int offset_to_pack_pos(struct packed_git *p, off_t ofs, uint32_t *pos) { unsigned lo, hi; @@ -347,3 +385,91 @@ off_t pack_pos_to_offset(struct packed_git *p, uint32_t pos) else return nth_packed_object_offset(p, pack_pos_to_index(p, pos)); } + +uint32_t pack_pos_to_midx(struct multi_pack_index *m, uint32_t pos) +{ + if (!m->revindex_data) + BUG("pack_pos_to_midx: reverse index not yet loaded"); + if (m->num_objects <= pos) + BUG("pack_pos_to_midx: out-of-bounds object at %"PRIu32, pos); + return get_be32(m->revindex_data + pos); +} + +struct midx_pack_key { + uint32_t pack; + off_t offset; + + uint32_t preferred_pack; + struct multi_pack_index *midx; +}; + +static int midx_pack_order_cmp(const void *va, const void *vb) +{ + const struct midx_pack_key *key = va; + struct multi_pack_index *midx = key->midx; + + uint32_t versus = pack_pos_to_midx(midx, (uint32_t*)vb - (const uint32_t *)midx->revindex_data); + uint32_t versus_pack = nth_midxed_pack_int_id(midx, versus); + off_t versus_offset; + + uint32_t key_preferred = key->pack == key->preferred_pack; + uint32_t versus_preferred = versus_pack == key->preferred_pack; + + /* + * First, compare the preferred-ness, noting that the preferred pack + * comes first. + */ + if (key_preferred && !versus_preferred) + return -1; + else if (!key_preferred && versus_preferred) + return 1; + + /* Then, break ties first by comparing the pack IDs. */ + if (key->pack < versus_pack) + return -1; + else if (key->pack > versus_pack) + return 1; + + /* Finally, break ties by comparing offsets within a pack. */ + versus_offset = nth_midxed_offset(midx, versus); + if (key->offset < versus_offset) + return -1; + else if (key->offset > versus_offset) + return 1; + + return 0; +} + +int midx_to_pack_pos(struct multi_pack_index *m, uint32_t at, uint32_t *pos) +{ + struct midx_pack_key key; + uint32_t *found; + + if (!m->revindex_data) + BUG("midx_to_pack_pos: reverse index not yet loaded"); + if (m->num_objects <= at) + BUG("midx_to_pack_pos: out-of-bounds object at %"PRIu32, at); + + key.pack = nth_midxed_pack_int_id(m, at); + key.offset = nth_midxed_offset(m, at); + key.midx = m; + /* + * The preferred pack sorts first, so determine its identifier by + * looking at the first object in pseudo-pack order. + * + * Note that if no --preferred-pack is explicitly given when writing a + * multi-pack index, then whichever pack has the lowest identifier + * implicitly is preferred (and includes all its objects, since ties are + * broken first by pack identifier). + */ + key.preferred_pack = nth_midxed_pack_int_id(m, pack_pos_to_midx(m, 0)); + + found = bsearch(&key, m->revindex_data, m->num_objects, + sizeof(*m->revindex_data), midx_pack_order_cmp); + + if (!found) + return error("bad offset for revindex"); + + *pos = found - m->revindex_data; + return 0; +} diff --git a/pack-revindex.h b/pack-revindex.h index ba7c82c..479b8f2 100644 --- a/pack-revindex.h +++ b/pack-revindex.h @@ -14,6 +14,20 @@ * * - offset: the byte offset within the .pack file at which the object contents * can be found + * + * The revindex can also be used with a multi-pack index (MIDX). In this + * setting: + * + * - index position refers to an object's numeric position within the MIDX + * + * - pack position refers to an object's position within a non-existent pack + * described by the MIDX. The pack structure is described in + * Documentation/technical/pack-format.txt. + * + * It is effectively a concatanation of all packs in the MIDX (ordered by + * their numeric ID within the MIDX) in their original order within each + * pack), removing duplicates, and placing the preferred pack (if any) + * first. */ @@ -24,6 +38,7 @@ #define GIT_TEST_REV_INDEX_DIE_IN_MEMORY "GIT_TEST_REV_INDEX_DIE_IN_MEMORY" struct packed_git; +struct multi_pack_index; /* * load_pack_revindex populates the revindex's internal data-structures for the @@ -35,6 +50,22 @@ struct packed_git; int load_pack_revindex(struct packed_git *p); /* + * load_midx_revindex loads the '.rev' file corresponding to the given + * multi-pack index by mmap-ing it and assigning pointers in the + * multi_pack_index to point at it. + * + * A negative number is returned on error. + */ +int load_midx_revindex(struct multi_pack_index *m); + +/* + * Frees resources associated with a multi-pack reverse index. + * + * A negative number is returned on error. + */ +int close_midx_revindex(struct multi_pack_index *m); + +/* * offset_to_pack_pos converts an object offset to a pack position. This * function returns zero on success, and a negative number otherwise. The * parameter 'pos' is usable only on success. @@ -71,4 +102,26 @@ uint32_t pack_pos_to_index(struct packed_git *p, uint32_t pos); */ off_t pack_pos_to_offset(struct packed_git *p, uint32_t pos); +/* + * pack_pos_to_midx converts the object at position "pos" within the MIDX + * pseudo-pack into a MIDX position. + * + * If the reverse index has not yet been loaded, or the position is out of + * bounds, this function aborts. + * + * This function runs in time O(log N) with the number of objects in the MIDX. + */ +uint32_t pack_pos_to_midx(struct multi_pack_index *m, uint32_t pos); + +/* + * midx_to_pack_pos converts from the MIDX-relative position at "at" to the + * corresponding pack position. + * + * If the reverse index has not yet been loaded, or the position is out of + * bounds, this function aborts. + * + * This function runs in constant time. + */ +int midx_to_pack_pos(struct multi_pack_index *midx, uint32_t at, uint32_t *pos); + #endif diff --git a/pack-write.c b/pack-write.c index 2ca85a9..f1fc3ec 100644 --- a/pack-write.c +++ b/pack-write.c @@ -201,21 +201,12 @@ static void write_rev_header(struct hashfile *f) } static void write_rev_index_positions(struct hashfile *f, - struct pack_idx_entry **objects, + uint32_t *pack_order, uint32_t nr_objects) { - uint32_t *pack_order; uint32_t i; - - ALLOC_ARRAY(pack_order, nr_objects); - for (i = 0; i < nr_objects; i++) - pack_order[i] = i; - QSORT_S(pack_order, nr_objects, pack_order_cmp, objects); - for (i = 0; i < nr_objects; i++) hashwrite_be32(f, pack_order[i]); - - free(pack_order); } static void write_rev_trailer(struct hashfile *f, const unsigned char *hash) @@ -229,6 +220,29 @@ const char *write_rev_file(const char *rev_name, const unsigned char *hash, unsigned flags) { + uint32_t *pack_order; + uint32_t i; + const char *ret; + + ALLOC_ARRAY(pack_order, nr_objects); + for (i = 0; i < nr_objects; i++) + pack_order[i] = i; + QSORT_S(pack_order, nr_objects, pack_order_cmp, objects); + + ret = write_rev_file_order(rev_name, pack_order, nr_objects, hash, + flags); + + free(pack_order); + + return ret; +} + +const char *write_rev_file_order(const char *rev_name, + uint32_t *pack_order, + uint32_t nr_objects, + const unsigned char *hash, + unsigned flags) +{ struct hashfile *f; int fd; @@ -262,7 +276,7 @@ const char *write_rev_file(const char *rev_name, write_rev_header(f); - write_rev_index_positions(f, objects, nr_objects); + write_rev_index_positions(f, pack_order, nr_objects); write_rev_trailer(f, hash); if (rev_name && adjust_shared_perm(rev_name) < 0) @@ -94,6 +94,7 @@ struct ref; void write_promisor_file(const char *promisor_name, struct ref **sought, int nr_sought); const char *write_rev_file(const char *rev_name, struct pack_idx_entry **objects, uint32_t nr_objects, const unsigned char *hash, unsigned flags); +const char *write_rev_file_order(const char *rev_name, uint32_t *pack_order, uint32_t nr_objects, const unsigned char *hash, unsigned flags); /* * The "hdr" output buffer should be at least this big, which will handle sizes @@ -862,6 +862,9 @@ static void prepare_pack(const char *full_name, size_t full_name_len, if (!strcmp(file_name, "multi-pack-index")) return; + if (starts_with(file_name, "multi-pack-index") && + ends_with(file_name, ".rev")) + return; if (ends_with(file_name, ".idx") || ends_with(file_name, ".rev") || ends_with(file_name, ".pack") || diff --git a/parse-options.c b/parse-options.c index fbea16e..e6f5676 100644 --- a/parse-options.c +++ b/parse-options.c @@ -625,6 +625,8 @@ static int show_gitcomp(const struct option *opts, int show_all) * * Right now this is only used to preprocess and substitute * OPTION_ALIAS. + * + * The returned options should be freed using free_preprocessed_options. */ static struct option *preprocess_options(struct parse_opt_ctx_t *ctx, const struct option *options) @@ -678,6 +680,7 @@ static struct option *preprocess_options(struct parse_opt_ctx_t *ctx, newopt[i].short_name = short_name; newopt[i].long_name = long_name; newopt[i].help = strbuf_detach(&help, NULL); + newopt[i].flags |= PARSE_OPT_FROM_ALIAS; break; } @@ -693,6 +696,20 @@ static struct option *preprocess_options(struct parse_opt_ctx_t *ctx, return newopt; } +static void free_preprocessed_options(struct option *options) +{ + int i; + + if (!options) + return; + + for (i = 0; options[i].type != OPTION_END; i++) { + if (options[i].flags & PARSE_OPT_FROM_ALIAS) + free((void *)options[i].help); + } + free(options); +} + static int usage_with_options_internal(struct parse_opt_ctx_t *, const char * const *, const struct option *, int, int); @@ -870,7 +887,7 @@ int parse_options(int argc, const char **argv, const char *prefix, } precompose_argv_prefix(argc, argv, NULL); - free(real_options); + free_preprocessed_options(real_options); free(ctx.alias_groups); return parse_options_end(&ctx); } diff --git a/parse-options.h b/parse-options.h index ff6506a..a845a9d 100644 --- a/parse-options.h +++ b/parse-options.h @@ -28,26 +28,27 @@ enum parse_opt_type { }; enum parse_opt_flags { - PARSE_OPT_KEEP_DASHDASH = 1, - PARSE_OPT_STOP_AT_NON_OPTION = 2, - PARSE_OPT_KEEP_ARGV0 = 4, - PARSE_OPT_KEEP_UNKNOWN = 8, - PARSE_OPT_NO_INTERNAL_HELP = 16, - PARSE_OPT_ONE_SHOT = 32 + PARSE_OPT_KEEP_DASHDASH = 1 << 0, + PARSE_OPT_STOP_AT_NON_OPTION = 1 << 1, + PARSE_OPT_KEEP_ARGV0 = 1 << 2, + PARSE_OPT_KEEP_UNKNOWN = 1 << 3, + PARSE_OPT_NO_INTERNAL_HELP = 1 << 4, + PARSE_OPT_ONE_SHOT = 1 << 5, }; enum parse_opt_option_flags { - PARSE_OPT_OPTARG = 1, - PARSE_OPT_NOARG = 2, - PARSE_OPT_NONEG = 4, - PARSE_OPT_HIDDEN = 8, - PARSE_OPT_LASTARG_DEFAULT = 16, - PARSE_OPT_NODASH = 32, - PARSE_OPT_LITERAL_ARGHELP = 64, - PARSE_OPT_SHELL_EVAL = 256, - PARSE_OPT_NOCOMPLETE = 512, - PARSE_OPT_COMP_ARG = 1024, - PARSE_OPT_CMDMODE = 2048 + PARSE_OPT_OPTARG = 1 << 0, + PARSE_OPT_NOARG = 1 << 1, + PARSE_OPT_NONEG = 1 << 2, + PARSE_OPT_HIDDEN = 1 << 3, + PARSE_OPT_LASTARG_DEFAULT = 1 << 4, + PARSE_OPT_NODASH = 1 << 5, + PARSE_OPT_LITERAL_ARGHELP = 1 << 6, + PARSE_OPT_FROM_ALIAS = 1 << 7, + PARSE_OPT_SHELL_EVAL = 1 << 8, + PARSE_OPT_NOCOMPLETE = 1 << 9, + PARSE_OPT_COMP_ARG = 1 << 10, + PARSE_OPT_CMDMODE = 1 << 11, }; enum parse_opt_result { @@ -196,17 +196,26 @@ int packet_write_fmt_gently(int fd, const char *fmt, ...) static int packet_write_gently(const int fd_out, const char *buf, size_t size) { - static char packet_write_buffer[LARGE_PACKET_MAX]; + char header[4]; size_t packet_size; - if (size > sizeof(packet_write_buffer) - 4) + if (size > LARGE_PACKET_DATA_MAX) return error(_("packet write failed - data exceeds max packet size")); packet_trace(buf, size, 1); packet_size = size + 4; - set_packet_header(packet_write_buffer, packet_size); - memcpy(packet_write_buffer + 4, buf, size); - if (write_in_full(fd_out, packet_write_buffer, packet_size) < 0) + + set_packet_header(header, packet_size); + + /* + * Write the header and the buffer in 2 parts so that we do + * not need to allocate a buffer or rely on a static buffer. + * This also avoids putting a large buffer on the stack which + * might have multi-threading issues. + */ + + if (write_in_full(fd_out, header, 4) < 0 || + write_in_full(fd_out, buf, size) < 0) return error(_("packet write failed")); return 0; } @@ -242,26 +251,27 @@ void packet_buf_write_len(struct strbuf *buf, const char *data, size_t len) packet_trace(data, len, 1); } -int write_packetized_from_fd(int fd_in, int fd_out) +int write_packetized_from_fd_no_flush(int fd_in, int fd_out) { - static char buf[LARGE_PACKET_DATA_MAX]; + char *buf = xmalloc(LARGE_PACKET_DATA_MAX); int err = 0; ssize_t bytes_to_write; while (!err) { - bytes_to_write = xread(fd_in, buf, sizeof(buf)); - if (bytes_to_write < 0) + bytes_to_write = xread(fd_in, buf, LARGE_PACKET_DATA_MAX); + if (bytes_to_write < 0) { + free(buf); return COPY_READ_ERROR; + } if (bytes_to_write == 0) break; err = packet_write_gently(fd_out, buf, bytes_to_write); } - if (!err) - err = packet_flush_gently(fd_out); + free(buf); return err; } -int write_packetized_from_buf(const char *src_in, size_t len, int fd_out) +int write_packetized_from_buf_no_flush(const char *src_in, size_t len, int fd_out) { int err = 0; size_t bytes_written = 0; @@ -277,8 +287,6 @@ int write_packetized_from_buf(const char *src_in, size_t len, int fd_out) err = packet_write_gently(fd_out, src_in + bytes_written, bytes_to_write); bytes_written += bytes_to_write; } - if (!err) - err = packet_flush_gently(fd_out); return err; } @@ -298,8 +306,11 @@ static int get_packet_data(int fd, char **src_buf, size_t *src_size, *src_size -= ret; } else { ret = read_in_full(fd, dst, size); - if (ret < 0) + if (ret < 0) { + if (options & PACKET_READ_GENTLE_ON_READ_ERROR) + return error_errno(_("read error")); die_errno(_("read error")); + } } /* And complain if we didn't get enough bytes to satisfy the read. */ @@ -307,6 +318,8 @@ static int get_packet_data(int fd, char **src_buf, size_t *src_size, if (options & PACKET_READ_GENTLE_ON_EOF) return -1; + if (options & PACKET_READ_GENTLE_ON_READ_ERROR) + return error(_("the remote end hung up unexpectedly")); die(_("the remote end hung up unexpectedly")); } @@ -335,6 +348,9 @@ enum packet_read_status packet_read_with_status(int fd, char **src_buffer, len = packet_length(linelen); if (len < 0) { + if (options & PACKET_READ_GENTLE_ON_READ_ERROR) + return error(_("protocol error: bad line length " + "character: %.4s"), linelen); die(_("protocol error: bad line length character: %.4s"), linelen); } else if (!len) { packet_trace("0000", 4, 0); @@ -349,12 +365,19 @@ enum packet_read_status packet_read_with_status(int fd, char **src_buffer, *pktlen = 0; return PACKET_READ_RESPONSE_END; } else if (len < 4) { + if (options & PACKET_READ_GENTLE_ON_READ_ERROR) + return error(_("protocol error: bad line length %d"), + len); die(_("protocol error: bad line length %d"), len); } len -= 4; - if ((unsigned)len >= size) + if ((unsigned)len >= size) { + if (options & PACKET_READ_GENTLE_ON_READ_ERROR) + return error(_("protocol error: bad line length %d"), + len); die(_("protocol error: bad line length %d"), len); + } if (get_packet_data(fd, src_buffer, src_len, buffer, len, options) < 0) { *pktlen = -1; @@ -421,7 +444,7 @@ char *packet_read_line_buf(char **src, size_t *src_len, int *dst_len) return packet_read_line_generic(-1, src, src_len, dst_len); } -ssize_t read_packetized_to_strbuf(int fd_in, struct strbuf *sb_out) +ssize_t read_packetized_to_strbuf(int fd_in, struct strbuf *sb_out, int options) { int packet_len; @@ -437,7 +460,7 @@ ssize_t read_packetized_to_strbuf(int fd_in, struct strbuf *sb_out) * that there is already room for the extra byte. */ sb_out->buf + sb_out->len, LARGE_PACKET_DATA_MAX+1, - PACKET_READ_GENTLE_ON_EOF); + options); if (packet_len <= 0) break; sb_out->len += packet_len; @@ -32,8 +32,8 @@ void packet_buf_write(struct strbuf *buf, const char *fmt, ...) __attribute__((f void packet_buf_write_len(struct strbuf *buf, const char *data, size_t len); int packet_flush_gently(int fd); int packet_write_fmt_gently(int fd, const char *fmt, ...) __attribute__((format (printf, 2, 3))); -int write_packetized_from_fd(int fd_in, int fd_out); -int write_packetized_from_buf(const char *src_in, size_t len, int fd_out); +int write_packetized_from_fd_no_flush(int fd_in, int fd_out); +int write_packetized_from_buf_no_flush(const char *src_in, size_t len, int fd_out); /* * Read a packetized line into the buffer, which must be at least size bytes @@ -68,10 +68,15 @@ int write_packetized_from_buf(const char *src_in, size_t len, int fd_out); * * If options contains PACKET_READ_DIE_ON_ERR_PACKET, it dies when it sees an * ERR packet. + * + * If options contains PACKET_READ_GENTLE_ON_READ_ERROR, we will not die + * on read errors, but instead return -1. However, we may still die on an + * ERR packet (if requested). */ -#define PACKET_READ_GENTLE_ON_EOF (1u<<0) -#define PACKET_READ_CHOMP_NEWLINE (1u<<1) -#define PACKET_READ_DIE_ON_ERR_PACKET (1u<<2) +#define PACKET_READ_GENTLE_ON_EOF (1u<<0) +#define PACKET_READ_CHOMP_NEWLINE (1u<<1) +#define PACKET_READ_DIE_ON_ERR_PACKET (1u<<2) +#define PACKET_READ_GENTLE_ON_READ_ERROR (1u<<3) int packet_read(int fd, char **src_buffer, size_t *src_len, char *buffer, unsigned size, int options); @@ -131,7 +136,7 @@ char *packet_read_line_buf(char **src_buf, size_t *src_len, int *size); /* * Reads a stream of variable sized packets until a flush packet is detected. */ -ssize_t read_packetized_to_strbuf(int fd_in, struct strbuf *sb_out); +ssize_t read_packetized_to_strbuf(int fd_in, struct strbuf *sb_out, int options); /* * Receive multiplexed output stream over git native protocol. diff --git a/ref-filter.c b/ref-filter.c index f0bd32f..a0adb45 100644 --- a/ref-filter.c +++ b/ref-filter.c @@ -1608,7 +1608,7 @@ static int get_object(struct ref_array_item *ref, int deref, struct object **obj if (oi->info.contentp) { *obj = parse_object_buffer(the_repository, &oi->oid, oi->type, oi->size, oi->content, &eaten); - if (!obj) { + if (!*obj) { if (!eaten) free(oi->content); return strbuf_addf_ret(err, -1, _("parse_object_buffer failed on %s for %s"), @@ -236,7 +236,7 @@ struct rev_info { const char *mime_boundary; const char *patch_suffix; int numbered_files; - int reroll_count; + const char *reroll_count; char *message_id; struct ident_split from_ident; struct string_list *ref_message_ids; diff --git a/sequencer.c b/sequencer.c index b4c63ae..fd183b5 100644 --- a/sequencer.c +++ b/sequencer.c @@ -2032,13 +2032,24 @@ static void record_in_rewritten(struct object_id *oid, flush_rewritten_pending(); } +static int should_edit(struct replay_opts *opts) { + if (opts->edit < 0) + /* + * Note that we only handle the case of non-conflicted + * commits; continue_single_pick() handles the conflicted + * commits itself instead of calling this function. + */ + return (opts->action == REPLAY_REVERT && isatty(0)) ? 1 : 0; + return opts->edit; +} + static int do_pick_commit(struct repository *r, struct todo_item *item, struct replay_opts *opts, int final_fixup, int *check_todo) { - unsigned int flags = opts->edit ? EDIT_MSG : 0; - const char *msg_file = opts->edit ? NULL : git_path_merge_msg(r); + unsigned int flags = should_edit(opts) ? EDIT_MSG : 0; + const char *msg_file = should_edit(opts) ? NULL : git_path_merge_msg(r); struct object_id head; struct commit *base, *next, *parent; const char *base_label, *next_label; @@ -3283,9 +3294,9 @@ static int save_opts(struct replay_opts *opts) if (opts->no_commit) res |= git_config_set_in_file_gently(opts_file, "options.no-commit", "true"); - if (opts->edit) - res |= git_config_set_in_file_gently(opts_file, - "options.edit", "true"); + if (opts->edit >= 0) + res |= git_config_set_in_file_gently(opts_file, "options.edit", + opts->edit ? "true" : "false"); if (opts->allow_empty) res |= git_config_set_in_file_gently(opts_file, "options.allow-empty", "true"); @@ -4259,7 +4270,7 @@ static int pick_commits(struct repository *r, prev_reflog_action = xstrdup(getenv(GIT_REFLOG_ACTION)); if (opts->allow_ff) assert(!(opts->signoff || opts->no_commit || - opts->record_origin || opts->edit || + opts->record_origin || should_edit(opts) || opts->committer_date_is_author_date || opts->ignore_date)); if (read_and_refresh_cache(r, opts)) @@ -4552,14 +4563,33 @@ cleanup_head_ref: return sequencer_remove_state(opts); } -static int continue_single_pick(struct repository *r) +static int continue_single_pick(struct repository *r, struct replay_opts *opts) { - const char *argv[] = { "commit", NULL }; + struct strvec argv = STRVEC_INIT; + int ret; if (!refs_ref_exists(get_main_ref_store(r), "CHERRY_PICK_HEAD") && !refs_ref_exists(get_main_ref_store(r), "REVERT_HEAD")) return error(_("no cherry-pick or revert in progress")); - return run_command_v_opt(argv, RUN_GIT_CMD); + + strvec_push(&argv, "commit"); + + /* + * continue_single_pick() handles the case of recovering from a + * conflict. should_edit() doesn't handle that case; for a conflict, + * we want to edit if the user asked for it, or if they didn't specify + * and stdin is a tty. + */ + if (!opts->edit || (opts->edit < 0 && !isatty(0))) + /* + * Include --cleanup=strip as well because we don't want the + * "# Conflicts:" messages. + */ + strvec_pushl(&argv, "--no-edit", "--cleanup=strip", NULL); + + ret = run_command_v_opt(argv.v, RUN_GIT_CMD); + strvec_clear(&argv); + return ret; } static int commit_staged_changes(struct repository *r, @@ -4729,7 +4759,7 @@ int sequencer_continue(struct repository *r, struct replay_opts *opts) goto release_todo_list; } } else if (!file_exists(get_todo_path(opts))) - return continue_single_pick(r); + return continue_single_pick(r, opts); else if ((res = read_populate_todo(r, &todo_list, opts))) goto release_todo_list; @@ -4738,7 +4768,7 @@ int sequencer_continue(struct repository *r, struct replay_opts *opts) if (refs_ref_exists(get_main_ref_store(r), "CHERRY_PICK_HEAD") || refs_ref_exists(get_main_ref_store(r), "REVERT_HEAD")) { - res = continue_single_pick(r); + res = continue_single_pick(r, opts); if (res) goto release_todo_list; } diff --git a/sequencer.h b/sequencer.h index f8b2e4a..d57d8ea 100644 --- a/sequencer.h +++ b/sequencer.h @@ -31,8 +31,10 @@ enum commit_msg_cleanup_mode { struct replay_opts { enum replay_action action; - /* Boolean options */ + /* Tri-state options: unspecified, false, or true */ int edit; + + /* Boolean options */ int record_origin; int no_commit; int signoff; @@ -71,7 +73,7 @@ struct replay_opts { /* Only used by REPLAY_NONE */ struct rev_info *revs; }; -#define REPLAY_OPTS_INIT { .action = -1, .current_fixups = STRBUF_INIT } +#define REPLAY_OPTS_INIT { .edit = -1, .action = -1, .current_fixups = STRBUF_INIT } /* * Note that ordering matters in this enum. Not only must it match the mapping @@ -1274,18 +1274,10 @@ const char *setup_git_directory_gently(int *nongit_ok) * the GIT_PREFIX environment variable must always match. For details * see Documentation/config/alias.txt. */ - if (nongit_ok && *nongit_ok) { + if (nongit_ok && *nongit_ok) startup_info->have_repository = 0; - startup_info->prefix = NULL; - setenv(GIT_PREFIX_ENVIRONMENT, "", 1); - } else { + else startup_info->have_repository = 1; - startup_info->prefix = prefix; - if (prefix) - setenv(GIT_PREFIX_ENVIRONMENT, prefix, 1); - else - setenv(GIT_PREFIX_ENVIRONMENT, "", 1); - } /* * Not all paths through the setup code will call 'set_git_dir()' (which @@ -1311,6 +1303,22 @@ const char *setup_git_directory_gently(int *nongit_ok) if (startup_info->have_repository) repo_set_hash_algo(the_repository, repo_fmt.hash_algo); } + /* + * Since precompose_string_if_needed() needs to look at + * the core.precomposeunicode configuration, this + * has to happen after the above block that finds + * out where the repository is, i.e. a preparation + * for calling git_config_get_bool(). + */ + if (prefix) { + prefix = precompose_string_if_needed(prefix); + startup_info->prefix = prefix; + setenv(GIT_PREFIX_ENVIRONMENT, prefix, 1); + } else { + startup_info->prefix = NULL; + setenv(GIT_PREFIX_ENVIRONMENT, "", 1); + } + strbuf_release(&dir); strbuf_release(&gitdir); diff --git a/simple-ipc.h b/simple-ipc.h new file mode 100644 index 0000000..dc3606e --- /dev/null +++ b/simple-ipc.h @@ -0,0 +1,239 @@ +#ifndef GIT_SIMPLE_IPC_H +#define GIT_SIMPLE_IPC_H + +/* + * See Documentation/technical/api-simple-ipc.txt + */ + +#if defined(GIT_WINDOWS_NATIVE) || !defined(NO_UNIX_SOCKETS) +#define SUPPORTS_SIMPLE_IPC +#endif + +#ifdef SUPPORTS_SIMPLE_IPC +#include "pkt-line.h" + +/* + * Simple IPC Client Side API. + */ + +enum ipc_active_state { + /* + * The pipe/socket exists and the daemon is waiting for connections. + */ + IPC_STATE__LISTENING = 0, + + /* + * The pipe/socket exists, but the daemon is not listening. + * Perhaps it is very busy. + * Perhaps the daemon died without deleting the path. + * Perhaps it is shutting down and draining existing clients. + * Perhaps it is dead, but other clients are lingering and + * still holding a reference to the pathname. + */ + IPC_STATE__NOT_LISTENING, + + /* + * The requested pathname is bogus and no amount of retries + * will fix that. + */ + IPC_STATE__INVALID_PATH, + + /* + * The requested pathname is not found. This usually means + * that there is no daemon present. + */ + IPC_STATE__PATH_NOT_FOUND, + + IPC_STATE__OTHER_ERROR, +}; + +struct ipc_client_connect_options { + /* + * Spin under timeout if the server is running but can't + * accept our connection yet. This should always be set + * unless you just want to poke the server and see if it + * is alive. + */ + unsigned int wait_if_busy:1; + + /* + * Spin under timeout if the pipe/socket is not yet present + * on the file system. This is useful if we just started + * the service and need to wait for it to become ready. + */ + unsigned int wait_if_not_found:1; + + /* + * Disallow chdir() when creating a Unix domain socket. + */ + unsigned int uds_disallow_chdir:1; +}; + +#define IPC_CLIENT_CONNECT_OPTIONS_INIT { \ + .wait_if_busy = 0, \ + .wait_if_not_found = 0, \ + .uds_disallow_chdir = 0, \ +} + +/* + * Determine if a server is listening on this named pipe or socket using + * platform-specific logic. This might just probe the filesystem or it + * might make a trivial connection to the server using this pathname. + */ +enum ipc_active_state ipc_get_active_state(const char *path); + +struct ipc_client_connection { + int fd; +}; + +/* + * Try to connect to the daemon on the named pipe or socket. + * + * Returns IPC_STATE__LISTENING and a connection handle. + * + * Otherwise, returns info to help decide whether to retry or to + * spawn/respawn the server. + */ +enum ipc_active_state ipc_client_try_connect( + const char *path, + const struct ipc_client_connect_options *options, + struct ipc_client_connection **p_connection); + +void ipc_client_close_connection(struct ipc_client_connection *connection); + +/* + * Used by the client to synchronously send and receive a message with + * the server on the provided client connection. + * + * Returns 0 when successful. + * + * Calls error() and returns non-zero otherwise. + */ +int ipc_client_send_command_to_connection( + struct ipc_client_connection *connection, + const char *message, struct strbuf *answer); + +/* + * Used by the client to synchronously connect and send and receive a + * message to the server listening at the given path. + * + * Returns 0 when successful. + * + * Calls error() and returns non-zero otherwise. + */ +int ipc_client_send_command(const char *path, + const struct ipc_client_connect_options *options, + const char *message, struct strbuf *answer); + +/* + * Simple IPC Server Side API. + */ + +struct ipc_server_reply_data; + +typedef int (ipc_server_reply_cb)(struct ipc_server_reply_data *, + const char *response, + size_t response_len); + +/* + * Prototype for an application-supplied callback to process incoming + * client IPC messages and compose a reply. The `application_cb` should + * use the provided `reply_cb` and `reply_data` to send an IPC response + * back to the client. The `reply_cb` callback can be called multiple + * times for chunking purposes. A reply message is optional and may be + * omitted if not necessary for the application. + * + * The return value from the application callback is ignored. + * The value `SIMPLE_IPC_QUIT` can be used to shutdown the server. + */ +typedef int (ipc_server_application_cb)(void *application_data, + const char *request, + ipc_server_reply_cb *reply_cb, + struct ipc_server_reply_data *reply_data); + +#define SIMPLE_IPC_QUIT -2 + +/* + * Opaque instance data to represent an IPC server instance. + */ +struct ipc_server_data; + +/* + * Control parameters for the IPC server instance. + * Use this to hide platform-specific settings. + */ +struct ipc_server_opts +{ + int nr_threads; + + /* + * Disallow chdir() when creating a Unix domain socket. + */ + unsigned int uds_disallow_chdir:1; +}; + +/* + * Start an IPC server instance in one or more background threads + * and return a handle to the pool. + * + * Returns 0 if the asynchronous server pool was started successfully. + * Returns -1 if not. + * Returns -2 if we could not startup because another server is using + * the socket or named pipe. + * + * When a client IPC message is received, the `application_cb` will be + * called (possibly on a random thread) to handle the message and + * optionally compose a reply message. + */ +int ipc_server_run_async(struct ipc_server_data **returned_server_data, + const char *path, const struct ipc_server_opts *opts, + ipc_server_application_cb *application_cb, + void *application_data); + +/* + * Gently signal the IPC server pool to shutdown. No new client + * connections will be accepted, but existing connections will be + * allowed to complete. + */ +int ipc_server_stop_async(struct ipc_server_data *server_data); + +/* + * Block the calling thread until all threads in the IPC server pool + * have completed and been joined. + */ +int ipc_server_await(struct ipc_server_data *server_data); + +/* + * Close and free all resource handles associated with the IPC server + * pool. + */ +void ipc_server_free(struct ipc_server_data *server_data); + +/* + * Run an IPC server instance and block the calling thread of the + * current process. It does not return until the IPC server has + * either shutdown or had an unrecoverable error. + * + * The IPC server handles incoming IPC messages from client processes + * and may use one or more background threads as necessary. + * + * Returns 0 after the server has completed successfully. + * Returns -1 if the server cannot be started. + * Returns -2 if we could not startup because another server is using + * the socket or named pipe. + * + * When a client IPC message is received, the `application_cb` will be + * called (possibly on a random thread) to handle the message and + * optionally compose a reply message. + * + * Note that `ipc_server_run()` is a synchronous wrapper around the + * above asynchronous routines. It effectively hides all of the + * server state and thread details from the caller and presents a + * simple synchronous interface. + */ +int ipc_server_run(const char *path, const struct ipc_server_opts *opts, + ipc_server_application_cb *application_cb, + void *application_data); + +#endif /* SUPPORTS_SIMPLE_IPC */ +#endif /* GIT_SIMPLE_IPC_H */ diff --git a/t/helper/test-bitmap.c b/t/helper/test-bitmap.c new file mode 100644 index 0000000..134a1e9 --- /dev/null +++ b/t/helper/test-bitmap.c @@ -0,0 +1,24 @@ +#include "test-tool.h" +#include "cache.h" +#include "pack-bitmap.h" + +static int bitmap_list_commits(void) +{ + return test_bitmap_commits(the_repository); +} + +int cmd__bitmap(int argc, const char **argv) +{ + setup_git_directory(); + + if (argc != 2) + goto usage; + + if (!strcmp(argv[1], "list-commits")) + return bitmap_list_commits(); + +usage: + usage("\ttest-tool bitmap list-commits"); + + return -1; +} diff --git a/t/helper/test-read-midx.c b/t/helper/test-read-midx.c index 2430880..7c2eb11 100644 --- a/t/helper/test-read-midx.c +++ b/t/helper/test-read-midx.c @@ -4,7 +4,7 @@ #include "repository.h" #include "object-store.h" -static int read_midx_file(const char *object_dir) +static int read_midx_file(const char *object_dir, int show_objects) { uint32_t i; struct multi_pack_index *m; @@ -43,13 +43,29 @@ static int read_midx_file(const char *object_dir) printf("object-dir: %s\n", m->object_dir); + if (show_objects) { + struct object_id oid; + struct pack_entry e; + + for (i = 0; i < m->num_objects; i++) { + nth_midxed_object_oid(&oid, m, i); + fill_midx_entry(the_repository, &oid, &e, m); + + printf("%s %"PRIu64"\t%s\n", + oid_to_hex(&oid), e.offset, e.p->pack_name); + } + return 0; + } + return 0; } int cmd__read_midx(int argc, const char **argv) { - if (argc != 2) - usage("read-midx <object-dir>"); + if (!(argc == 2 || argc == 3)) + usage("read-midx [--show-objects] <object-dir>"); - return read_midx_file(argv[1]); + if (!strcmp(argv[1], "--show-objects")) + return read_midx_file(argv[2], 1); + return read_midx_file(argv[1], 0); } diff --git a/t/helper/test-simple-ipc.c b/t/helper/test-simple-ipc.c new file mode 100644 index 0000000..42040ef --- /dev/null +++ b/t/helper/test-simple-ipc.c @@ -0,0 +1,787 @@ +/* + * test-simple-ipc.c: verify that the Inter-Process Communication works. + */ + +#include "test-tool.h" +#include "cache.h" +#include "strbuf.h" +#include "simple-ipc.h" +#include "parse-options.h" +#include "thread-utils.h" +#include "strvec.h" + +#ifndef SUPPORTS_SIMPLE_IPC +int cmd__simple_ipc(int argc, const char **argv) +{ + die("simple IPC not available on this platform"); +} +#else + +/* + * The test daemon defines an "application callback" that supports a + * series of commands (see `test_app_cb()`). + * + * Unknown commands are caught here and we send an error message back + * to the client process. + */ +static int app__unhandled_command(const char *command, + ipc_server_reply_cb *reply_cb, + struct ipc_server_reply_data *reply_data) +{ + struct strbuf buf = STRBUF_INIT; + int ret; + + strbuf_addf(&buf, "unhandled command: %s", command); + ret = reply_cb(reply_data, buf.buf, buf.len); + strbuf_release(&buf); + + return ret; +} + +/* + * Reply with a single very large buffer. This is to ensure that + * long response are properly handled -- whether the chunking occurs + * in the kernel or in the (probably pkt-line) layer. + */ +#define BIG_ROWS (10000) +static int app__big_command(ipc_server_reply_cb *reply_cb, + struct ipc_server_reply_data *reply_data) +{ + struct strbuf buf = STRBUF_INIT; + int row; + int ret; + + for (row = 0; row < BIG_ROWS; row++) + strbuf_addf(&buf, "big: %.75d\n", row); + + ret = reply_cb(reply_data, buf.buf, buf.len); + strbuf_release(&buf); + + return ret; +} + +/* + * Reply with a series of lines. This is to ensure that we can incrementally + * compute the response and chunk it to the client. + */ +#define CHUNK_ROWS (10000) +static int app__chunk_command(ipc_server_reply_cb *reply_cb, + struct ipc_server_reply_data *reply_data) +{ + struct strbuf buf = STRBUF_INIT; + int row; + int ret; + + for (row = 0; row < CHUNK_ROWS; row++) { + strbuf_setlen(&buf, 0); + strbuf_addf(&buf, "big: %.75d\n", row); + ret = reply_cb(reply_data, buf.buf, buf.len); + } + + strbuf_release(&buf); + + return ret; +} + +/* + * Slowly reply with a series of lines. This is to model an expensive to + * compute chunked response (which might happen if this callback is running + * in a thread and is fighting for a lock with other threads). + */ +#define SLOW_ROWS (1000) +#define SLOW_DELAY_MS (10) +static int app__slow_command(ipc_server_reply_cb *reply_cb, + struct ipc_server_reply_data *reply_data) +{ + struct strbuf buf = STRBUF_INIT; + int row; + int ret; + + for (row = 0; row < SLOW_ROWS; row++) { + strbuf_setlen(&buf, 0); + strbuf_addf(&buf, "big: %.75d\n", row); + ret = reply_cb(reply_data, buf.buf, buf.len); + sleep_millisec(SLOW_DELAY_MS); + } + + strbuf_release(&buf); + + return ret; +} + +/* + * The client sent a command followed by a (possibly very) large buffer. + */ +static int app__sendbytes_command(const char *received, + ipc_server_reply_cb *reply_cb, + struct ipc_server_reply_data *reply_data) +{ + struct strbuf buf_resp = STRBUF_INIT; + const char *p = "?"; + int len_ballast = 0; + int k; + int errs = 0; + int ret; + + if (skip_prefix(received, "sendbytes ", &p)) + len_ballast = strlen(p); + + /* + * Verify that the ballast is n copies of a single letter. + * And that the multi-threaded IO layer didn't cross the streams. + */ + for (k = 1; k < len_ballast; k++) + if (p[k] != p[0]) + errs++; + + if (errs) + strbuf_addf(&buf_resp, "errs:%d\n", errs); + else + strbuf_addf(&buf_resp, "rcvd:%c%08d\n", p[0], len_ballast); + + ret = reply_cb(reply_data, buf_resp.buf, buf_resp.len); + + strbuf_release(&buf_resp); + + return ret; +} + +/* + * An arbitrary fixed address to verify that the application instance + * data is handled properly. + */ +static int my_app_data = 42; + +static ipc_server_application_cb test_app_cb; + +/* + * This is the "application callback" that sits on top of the + * "ipc-server". It completely defines the set of commands supported + * by this application. + */ +static int test_app_cb(void *application_data, + const char *command, + ipc_server_reply_cb *reply_cb, + struct ipc_server_reply_data *reply_data) +{ + /* + * Verify that we received the application-data that we passed + * when we started the ipc-server. (We have several layers of + * callbacks calling callbacks and it's easy to get things mixed + * up (especially when some are "void*").) + */ + if (application_data != (void*)&my_app_data) + BUG("application_cb: application_data pointer wrong"); + + if (!strcmp(command, "quit")) { + /* + * The client sent a "quit" command. This is an async + * request for the server to shutdown. + * + * We DO NOT send the client a response message + * (because we have nothing to say and the other + * server threads have not yet stopped). + * + * Tell the ipc-server layer to start shutting down. + * This includes: stop listening for new connections + * on the socket/pipe and telling all worker threads + * to finish/drain their outgoing responses to other + * clients. + * + * This DOES NOT force an immediate sync shutdown. + */ + return SIMPLE_IPC_QUIT; + } + + if (!strcmp(command, "ping")) { + const char *answer = "pong"; + return reply_cb(reply_data, answer, strlen(answer)); + } + + if (!strcmp(command, "big")) + return app__big_command(reply_cb, reply_data); + + if (!strcmp(command, "chunk")) + return app__chunk_command(reply_cb, reply_data); + + if (!strcmp(command, "slow")) + return app__slow_command(reply_cb, reply_data); + + if (starts_with(command, "sendbytes ")) + return app__sendbytes_command(command, reply_cb, reply_data); + + return app__unhandled_command(command, reply_cb, reply_data); +} + +struct cl_args +{ + const char *subcommand; + const char *path; + const char *token; + + int nr_threads; + int max_wait_sec; + int bytecount; + int batchsize; + + char bytevalue; +}; + +static struct cl_args cl_args = { + .subcommand = NULL, + .path = "ipc-test", + .token = NULL, + + .nr_threads = 5, + .max_wait_sec = 60, + .bytecount = 1024, + .batchsize = 10, + + .bytevalue = 'x', +}; + +/* + * This process will run as a simple-ipc server and listen for IPC commands + * from client processes. + */ +static int daemon__run_server(void) +{ + int ret; + + struct ipc_server_opts opts = { + .nr_threads = cl_args.nr_threads, + }; + + /* + * Synchronously run the ipc-server. We don't need any application + * instance data, so pass an arbitrary pointer (that we'll later + * verify made the round trip). + */ + ret = ipc_server_run(cl_args.path, &opts, test_app_cb, (void*)&my_app_data); + if (ret == -2) + error(_("socket/pipe already in use: '%s'"), cl_args.path); + else if (ret == -1) + error_errno(_("could not start server on: '%s'"), cl_args.path); + + return ret; +} + +#ifndef GIT_WINDOWS_NATIVE +/* + * This is adapted from `daemonize()`. Use `fork()` to directly create and + * run the daemon in a child process. + */ +static int spawn_server(pid_t *pid) +{ + struct ipc_server_opts opts = { + .nr_threads = cl_args.nr_threads, + }; + + *pid = fork(); + + switch (*pid) { + case 0: + if (setsid() == -1) + error_errno(_("setsid failed")); + close(0); + close(1); + close(2); + sanitize_stdfds(); + + return ipc_server_run(cl_args.path, &opts, test_app_cb, + (void*)&my_app_data); + + case -1: + return error_errno(_("could not spawn daemon in the background")); + + default: + return 0; + } +} +#else +/* + * Conceptually like `daemonize()` but different because Windows does not + * have `fork(2)`. Spawn a normal Windows child process but without the + * limitations of `start_command()` and `finish_command()`. + */ +static int spawn_server(pid_t *pid) +{ + char test_tool_exe[MAX_PATH]; + struct strvec args = STRVEC_INIT; + int in, out; + + GetModuleFileNameA(NULL, test_tool_exe, MAX_PATH); + + in = open("/dev/null", O_RDONLY); + out = open("/dev/null", O_WRONLY); + + strvec_push(&args, test_tool_exe); + strvec_push(&args, "simple-ipc"); + strvec_push(&args, "run-daemon"); + strvec_pushf(&args, "--name=%s", cl_args.path); + strvec_pushf(&args, "--threads=%d", cl_args.nr_threads); + + *pid = mingw_spawnvpe(args.v[0], args.v, NULL, NULL, in, out, out); + close(in); + close(out); + + strvec_clear(&args); + + if (*pid < 0) + return error(_("could not spawn daemon in the background")); + + return 0; +} +#endif + +/* + * This is adapted from `wait_or_whine()`. Watch the child process and + * let it get started and begin listening for requests on the socket + * before reporting our success. + */ +static int wait_for_server_startup(pid_t pid_child) +{ + int status; + pid_t pid_seen; + enum ipc_active_state s; + time_t time_limit, now; + + time(&time_limit); + time_limit += cl_args.max_wait_sec; + + for (;;) { + pid_seen = waitpid(pid_child, &status, WNOHANG); + + if (pid_seen == -1) + return error_errno(_("waitpid failed")); + + else if (pid_seen == 0) { + /* + * The child is still running (this should be + * the normal case). Try to connect to it on + * the socket and see if it is ready for + * business. + * + * If there is another daemon already running, + * our child will fail to start (possibly + * after a timeout on the lock), but we don't + * care (who responds) if the socket is live. + */ + s = ipc_get_active_state(cl_args.path); + if (s == IPC_STATE__LISTENING) + return 0; + + time(&now); + if (now > time_limit) + return error(_("daemon not online yet")); + + continue; + } + + else if (pid_seen == pid_child) { + /* + * The new child daemon process shutdown while + * it was starting up, so it is not listening + * on the socket. + * + * Try to ping the socket in the odd chance + * that another daemon started (or was already + * running) while our child was starting. + * + * Again, we don't care who services the socket. + */ + s = ipc_get_active_state(cl_args.path); + if (s == IPC_STATE__LISTENING) + return 0; + + /* + * We don't care about the WEXITSTATUS() nor + * any of the WIF*(status) values because + * `cmd__simple_ipc()` does the `!!result` + * trick on all function return values. + * + * So it is sufficient to just report the + * early shutdown as an error. + */ + return error(_("daemon failed to start")); + } + + else + return error(_("waitpid is confused")); + } +} + +/* + * This process will start a simple-ipc server in a background process and + * wait for it to become ready. This is like `daemonize()` but gives us + * more control and better error reporting (and makes it easier to write + * unit tests). + */ +static int daemon__start_server(void) +{ + pid_t pid_child; + int ret; + + /* + * Run the actual daemon in a background process. + */ + ret = spawn_server(&pid_child); + if (pid_child <= 0) + return ret; + + /* + * Let the parent wait for the child process to get started + * and begin listening for requests on the socket. + */ + ret = wait_for_server_startup(pid_child); + + return ret; +} + +/* + * This process will run a quick probe to see if a simple-ipc server + * is active on this path. + * + * Returns 0 if the server is alive. + */ +static int client__probe_server(void) +{ + enum ipc_active_state s; + + s = ipc_get_active_state(cl_args.path); + switch (s) { + case IPC_STATE__LISTENING: + return 0; + + case IPC_STATE__NOT_LISTENING: + return error("no server listening at '%s'", cl_args.path); + + case IPC_STATE__PATH_NOT_FOUND: + return error("path not found '%s'", cl_args.path); + + case IPC_STATE__INVALID_PATH: + return error("invalid pipe/socket name '%s'", cl_args.path); + + case IPC_STATE__OTHER_ERROR: + default: + return error("other error for '%s'", cl_args.path); + } +} + +/* + * Send an IPC command token to an already-running server daemon and + * print the response. + * + * This is a simple 1 word command/token that `test_app_cb()` (in the + * daemon process) will understand. + */ +static int client__send_ipc(void) +{ + const char *command = "(no-command)"; + struct strbuf buf = STRBUF_INIT; + struct ipc_client_connect_options options + = IPC_CLIENT_CONNECT_OPTIONS_INIT; + + if (cl_args.token && *cl_args.token) + command = cl_args.token; + + options.wait_if_busy = 1; + options.wait_if_not_found = 0; + + if (!ipc_client_send_command(cl_args.path, &options, command, &buf)) { + if (buf.len) { + printf("%s\n", buf.buf); + fflush(stdout); + } + strbuf_release(&buf); + + return 0; + } + + return error("failed to send '%s' to '%s'", command, cl_args.path); +} + +/* + * Send an IPC command to an already-running server and ask it to + * shutdown. "send quit" is an async request and queues a shutdown + * event in the server, so we spin and wait here for it to actually + * shutdown to make the unit tests a little easier to write. + */ +static int client__stop_server(void) +{ + int ret; + time_t time_limit, now; + enum ipc_active_state s; + + time(&time_limit); + time_limit += cl_args.max_wait_sec; + + cl_args.token = "quit"; + + ret = client__send_ipc(); + if (ret) + return ret; + + for (;;) { + sleep_millisec(100); + + s = ipc_get_active_state(cl_args.path); + + if (s != IPC_STATE__LISTENING) { + /* + * The socket/pipe is gone and/or has stopped + * responding. Lets assume that the daemon + * process has exited too. + */ + return 0; + } + + time(&now); + if (now > time_limit) + return error(_("daemon has not shutdown yet")); + } +} + +/* + * Send an IPC command followed by ballast to confirm that a large + * message can be sent and that the kernel or pkt-line layers will + * properly chunk it and that the daemon receives the entire message. + */ +static int do_sendbytes(int bytecount, char byte, const char *path, + const struct ipc_client_connect_options *options) +{ + struct strbuf buf_send = STRBUF_INIT; + struct strbuf buf_resp = STRBUF_INIT; + + strbuf_addstr(&buf_send, "sendbytes "); + strbuf_addchars(&buf_send, byte, bytecount); + + if (!ipc_client_send_command(path, options, buf_send.buf, &buf_resp)) { + strbuf_rtrim(&buf_resp); + printf("sent:%c%08d %s\n", byte, bytecount, buf_resp.buf); + fflush(stdout); + strbuf_release(&buf_send); + strbuf_release(&buf_resp); + + return 0; + } + + return error("client failed to sendbytes(%d, '%c') to '%s'", + bytecount, byte, path); +} + +/* + * Send an IPC command with ballast to an already-running server daemon. + */ +static int client__sendbytes(void) +{ + struct ipc_client_connect_options options + = IPC_CLIENT_CONNECT_OPTIONS_INIT; + + options.wait_if_busy = 1; + options.wait_if_not_found = 0; + options.uds_disallow_chdir = 0; + + return do_sendbytes(cl_args.bytecount, cl_args.bytevalue, cl_args.path, + &options); +} + +struct multiple_thread_data { + pthread_t pthread_id; + struct multiple_thread_data *next; + const char *path; + int bytecount; + int batchsize; + int sum_errors; + int sum_good; + char letter; +}; + +static void *multiple_thread_proc(void *_multiple_thread_data) +{ + struct multiple_thread_data *d = _multiple_thread_data; + int k; + struct ipc_client_connect_options options + = IPC_CLIENT_CONNECT_OPTIONS_INIT; + + options.wait_if_busy = 1; + options.wait_if_not_found = 0; + /* + * A multi-threaded client should not be randomly calling chdir(). + * The test will pass without this restriction because the test is + * not otherwise accessing the filesystem, but it makes us honest. + */ + options.uds_disallow_chdir = 1; + + trace2_thread_start("multiple"); + + for (k = 0; k < d->batchsize; k++) { + if (do_sendbytes(d->bytecount + k, d->letter, d->path, &options)) + d->sum_errors++; + else + d->sum_good++; + } + + trace2_thread_exit(); + return NULL; +} + +/* + * Start a client-side thread pool. Each thread sends a series of + * IPC requests. Each request is on a new connection to the server. + */ +static int client__multiple(void) +{ + struct multiple_thread_data *list = NULL; + int k; + int sum_join_errors = 0; + int sum_thread_errors = 0; + int sum_good = 0; + + for (k = 0; k < cl_args.nr_threads; k++) { + struct multiple_thread_data *d = xcalloc(1, sizeof(*d)); + d->next = list; + d->path = cl_args.path; + d->bytecount = cl_args.bytecount + cl_args.batchsize*(k/26); + d->batchsize = cl_args.batchsize; + d->sum_errors = 0; + d->sum_good = 0; + d->letter = 'A' + (k % 26); + + if (pthread_create(&d->pthread_id, NULL, multiple_thread_proc, d)) { + warning("failed to create thread[%d] skipping remainder", k); + free(d); + break; + } + + list = d; + } + + while (list) { + struct multiple_thread_data *d = list; + + if (pthread_join(d->pthread_id, NULL)) + sum_join_errors++; + + sum_thread_errors += d->sum_errors; + sum_good += d->sum_good; + + list = d->next; + free(d); + } + + printf("client (good %d) (join %d), (errors %d)\n", + sum_good, sum_join_errors, sum_thread_errors); + + return (sum_join_errors + sum_thread_errors) ? 1 : 0; +} + +int cmd__simple_ipc(int argc, const char **argv) +{ + const char * const simple_ipc_usage[] = { + N_("test-helper simple-ipc is-active [<name>] [<options>]"), + N_("test-helper simple-ipc run-daemon [<name>] [<threads>]"), + N_("test-helper simple-ipc start-daemon [<name>] [<threads>] [<max-wait>]"), + N_("test-helper simple-ipc stop-daemon [<name>] [<max-wait>]"), + N_("test-helper simple-ipc send [<name>] [<token>]"), + N_("test-helper simple-ipc sendbytes [<name>] [<bytecount>] [<byte>]"), + N_("test-helper simple-ipc multiple [<name>] [<threads>] [<bytecount>] [<batchsize>]"), + NULL + }; + + const char *bytevalue = NULL; + + struct option options[] = { +#ifndef GIT_WINDOWS_NATIVE + OPT_STRING(0, "name", &cl_args.path, N_("name"), N_("name or pathname of unix domain socket")), +#else + OPT_STRING(0, "name", &cl_args.path, N_("name"), N_("named-pipe name")), +#endif + OPT_INTEGER(0, "threads", &cl_args.nr_threads, N_("number of threads in server thread pool")), + OPT_INTEGER(0, "max-wait", &cl_args.max_wait_sec, N_("seconds to wait for daemon to start or stop")), + + OPT_INTEGER(0, "bytecount", &cl_args.bytecount, N_("number of bytes")), + OPT_INTEGER(0, "batchsize", &cl_args.batchsize, N_("number of requests per thread")), + + OPT_STRING(0, "byte", &bytevalue, N_("byte"), N_("ballast character")), + OPT_STRING(0, "token", &cl_args.token, N_("token"), N_("command token to send to the server")), + + OPT_END() + }; + + if (argc < 2) + usage_with_options(simple_ipc_usage, options); + + if (argc == 2 && !strcmp(argv[1], "-h")) + usage_with_options(simple_ipc_usage, options); + + if (argc == 2 && !strcmp(argv[1], "SUPPORTS_SIMPLE_IPC")) + return 0; + + cl_args.subcommand = argv[1]; + + argc--; + argv++; + + argc = parse_options(argc, argv, NULL, options, simple_ipc_usage, 0); + + if (cl_args.nr_threads < 1) + cl_args.nr_threads = 1; + if (cl_args.max_wait_sec < 0) + cl_args.max_wait_sec = 0; + if (cl_args.bytecount < 1) + cl_args.bytecount = 1; + if (cl_args.batchsize < 1) + cl_args.batchsize = 1; + + if (bytevalue && *bytevalue) + cl_args.bytevalue = bytevalue[0]; + + /* + * Use '!!' on all dispatch functions to map from `error()` style + * (returns -1) style to `test_must_fail` style (expects 1). This + * makes shell error messages less confusing. + */ + + if (!strcmp(cl_args.subcommand, "is-active")) + return !!client__probe_server(); + + if (!strcmp(cl_args.subcommand, "run-daemon")) + return !!daemon__run_server(); + + if (!strcmp(cl_args.subcommand, "start-daemon")) + return !!daemon__start_server(); + + /* + * Client commands follow. Ensure a server is running before + * sending any data. This might be overkill, but then again + * this is a test harness. + */ + + if (!strcmp(cl_args.subcommand, "stop-daemon")) { + if (client__probe_server()) + return 1; + return !!client__stop_server(); + } + + if (!strcmp(cl_args.subcommand, "send")) { + if (client__probe_server()) + return 1; + return !!client__send_ipc(); + } + + if (!strcmp(cl_args.subcommand, "sendbytes")) { + if (client__probe_server()) + return 1; + return !!client__sendbytes(); + } + + if (!strcmp(cl_args.subcommand, "multiple")) { + if (client__probe_server()) + return 1; + return !!client__multiple(); + } + + die("Unhandled subcommand: '%s'", cl_args.subcommand); +} +#endif diff --git a/t/helper/test-tool.c b/t/helper/test-tool.c index f97cd9f..25c6a37 100644 --- a/t/helper/test-tool.c +++ b/t/helper/test-tool.c @@ -15,6 +15,7 @@ struct test_cmd { static struct test_cmd cmds[] = { { "advise", cmd__advise_if_enabled }, + { "bitmap", cmd__bitmap }, { "bloom", cmd__bloom }, { "chmtime", cmd__chmtime }, { "config", cmd__config }, @@ -65,6 +66,7 @@ static struct test_cmd cmds[] = { { "sha1", cmd__sha1 }, { "sha256", cmd__sha256 }, { "sigchain", cmd__sigchain }, + { "simple-ipc", cmd__simple_ipc }, { "strcmp-offset", cmd__strcmp_offset }, { "string-list", cmd__string_list }, { "submodule-config", cmd__submodule_config }, diff --git a/t/helper/test-tool.h b/t/helper/test-tool.h index 28072c0..f03c598 100644 --- a/t/helper/test-tool.h +++ b/t/helper/test-tool.h @@ -5,6 +5,7 @@ #include "git-compat-util.h" int cmd__advise_if_enabled(int argc, const char **argv); +int cmd__bitmap(int argc, const char **argv); int cmd__bloom(int argc, const char **argv); int cmd__chmtime(int argc, const char **argv); int cmd__config(int argc, const char **argv); @@ -55,6 +56,7 @@ int cmd__sha1(int argc, const char **argv); int cmd__oid_array(int argc, const char **argv); int cmd__sha256(int argc, const char **argv); int cmd__sigchain(int argc, const char **argv); +int cmd__simple_ipc(int argc, const char **argv); int cmd__strcmp_offset(int argc, const char **argv); int cmd__string_list(int argc, const char **argv); int cmd__submodule_config(int argc, const char **argv); diff --git a/t/perf/p5310-pack-bitmaps.sh b/t/perf/p5310-pack-bitmaps.sh index b3e725f..452be01 100755 --- a/t/perf/p5310-pack-bitmaps.sh +++ b/t/perf/p5310-pack-bitmaps.sh @@ -15,6 +15,12 @@ test_expect_success 'setup bitmap config' ' git config pack.writebitmaps true ' +# we need to create the tag up front such that it is covered by the repack and +# thus by generated bitmaps. +test_expect_success 'create tags' ' + git tag --message="tag pointing to HEAD" perf-tag HEAD +' + test_perf 'repack to disk' ' git repack -ad ' @@ -43,6 +49,14 @@ test_perf 'rev-list (objects)' ' git rev-list --all --use-bitmap-index --objects >/dev/null ' +test_perf 'rev-list with tag negated via --not --all (objects)' ' + git rev-list perf-tag --not --all --use-bitmap-index --objects >/dev/null +' + +test_perf 'rev-list with negative tag (objects)' ' + git rev-list HEAD --not perf-tag --use-bitmap-index --objects >/dev/null +' + test_perf 'rev-list count with blob:none' ' git rev-list --use-bitmap-index --count --objects --all \ --filter=blob:none >/dev/null diff --git a/t/t0052-simple-ipc.sh b/t/t0052-simple-ipc.sh new file mode 100755 index 0000000..ff98be3 --- /dev/null +++ b/t/t0052-simple-ipc.sh @@ -0,0 +1,122 @@ +#!/bin/sh + +test_description='simple command server' + +. ./test-lib.sh + +test-tool simple-ipc SUPPORTS_SIMPLE_IPC || { + skip_all='simple IPC not supported on this platform' + test_done +} + +stop_simple_IPC_server () { + test-tool simple-ipc stop-daemon +} + +test_expect_success 'start simple command server' ' + test_atexit stop_simple_IPC_server && + test-tool simple-ipc start-daemon --threads=8 && + test-tool simple-ipc is-active +' + +test_expect_success 'simple command server' ' + test-tool simple-ipc send --token=ping >actual && + echo pong >expect && + test_cmp expect actual +' + +test_expect_success 'servers cannot share the same path' ' + test_must_fail test-tool simple-ipc run-daemon && + test-tool simple-ipc is-active +' + +test_expect_success 'big response' ' + test-tool simple-ipc send --token=big >actual && + test_line_count -ge 10000 actual && + grep -q "big: [0]*9999\$" actual +' + +test_expect_success 'chunk response' ' + test-tool simple-ipc send --token=chunk >actual && + test_line_count -ge 10000 actual && + grep -q "big: [0]*9999\$" actual +' + +test_expect_success 'slow response' ' + test-tool simple-ipc send --token=slow >actual && + test_line_count -ge 100 actual && + grep -q "big: [0]*99\$" actual +' + +# Send an IPC with n=100,000 bytes of ballast. This should be large enough +# to force both the kernel and the pkt-line layer to chunk the message to the +# daemon and for the daemon to receive it in chunks. +# +test_expect_success 'sendbytes' ' + test-tool simple-ipc sendbytes --bytecount=100000 --byte=A >actual && + grep "sent:A00100000 rcvd:A00100000" actual +' + +# Start a series of <threads> client threads that each make <batchsize> +# IPC requests to the server. Each (<threads> * <batchsize>) request +# will open a new connection to the server and randomly bind to a server +# thread. Each client thread exits after completing its batch. So the +# total number of live client threads will be smaller than the total. +# Each request will send a message containing at least <bytecount> bytes +# of ballast. (Responses are small.) +# +# The purpose here is to test threading in the server and responding to +# many concurrent client requests (regardless of whether they come from +# 1 client process or many). And to test that the server side of the +# named pipe/socket is stable. (On Windows this means that the server +# pipe is properly recycled.) +# +# On Windows it also lets us adjust the connection timeout in the +# `ipc_client_send_command()`. +# +# Note it is easy to drive the system into failure by requesting an +# insane number of threads on client or server and/or increasing the +# per-thread batchsize or the per-request bytecount (ballast). +# On Windows these failures look like "pipe is busy" errors. +# So I've chosen fairly conservative values for now. +# +# We expect output of the form "sent:<letter><length> ..." +# With terms (7, 19, 13) we expect: +# <letter> in [A-G] +# <length> in [19+0 .. 19+(13-1)] +# and (7 * 13) successful responses. +# +test_expect_success 'stress test threads' ' + test-tool simple-ipc multiple \ + --threads=7 \ + --bytecount=19 \ + --batchsize=13 \ + >actual && + test_line_count = 92 actual && + grep "good 91" actual && + grep "sent:A" <actual >actual_a && + cat >expect_a <<-EOF && + sent:A00000019 rcvd:A00000019 + sent:A00000020 rcvd:A00000020 + sent:A00000021 rcvd:A00000021 + sent:A00000022 rcvd:A00000022 + sent:A00000023 rcvd:A00000023 + sent:A00000024 rcvd:A00000024 + sent:A00000025 rcvd:A00000025 + sent:A00000026 rcvd:A00000026 + sent:A00000027 rcvd:A00000027 + sent:A00000028 rcvd:A00000028 + sent:A00000029 rcvd:A00000029 + sent:A00000030 rcvd:A00000030 + sent:A00000031 rcvd:A00000031 + EOF + test_cmp expect_a actual_a +' + +test_expect_success 'stop-daemon works' ' + test-tool simple-ipc stop-daemon && + test_must_fail test-tool simple-ipc is-active && + test_must_fail test-tool simple-ipc send --token=ping +' + +test_done diff --git a/t/t3206-range-diff.sh b/t/t3206-range-diff.sh index 1b26c4c..e30bc48 100755 --- a/t/t3206-range-diff.sh +++ b/t/t3206-range-diff.sh @@ -521,6 +521,30 @@ test_expect_success 'format-patch --range-diff as commentary' ' grep "> 1: .* new message" 0001-* ' +test_expect_success 'format-patch --range-diff reroll-count with a non-integer' ' + git format-patch --range-diff=HEAD~1 -v2.9 HEAD~1 >actual && + test_when_finished "rm v2.9-0001-*" && + test_line_count = 1 actual && + test_i18ngrep "^Range-diff:$" v2.9-0001-* && + grep "> 1: .* new message" v2.9-0001-* +' + +test_expect_success 'format-patch --range-diff reroll-count with a integer' ' + git format-patch --range-diff=HEAD~1 -v2 HEAD~1 >actual && + test_when_finished "rm v2-0001-*" && + test_line_count = 1 actual && + test_i18ngrep "^Range-diff ..* v1:$" v2-0001-* && + grep "> 1: .* new message" v2-0001-* +' + +test_expect_success 'format-patch --range-diff with v0' ' + git format-patch --range-diff=HEAD~1 -v0 HEAD~1 >actual && + test_when_finished "rm v0-0001-*" && + test_line_count = 1 actual && + test_i18ngrep "^Range-diff:$" v0-0001-* && + grep "> 1: .* new message" v0-0001-* +' + test_expect_success 'range-diff overrides diff.noprefix internally' ' git -c diff.noprefix=true range-diff HEAD^... ' diff --git a/t/t3510-cherry-pick-sequence.sh b/t/t3510-cherry-pick-sequence.sh index b76cb6d..49010aa 100755 --- a/t/t3510-cherry-pick-sequence.sh +++ b/t/t3510-cherry-pick-sequence.sh @@ -65,7 +65,7 @@ test_expect_success 'cherry-pick persists opts correctly' ' # gets interrupted, use a high-enough number that is larger # than the number of parents of any commit we have created mainline=4 && - test_expect_code 128 git cherry-pick -s -m $mainline --strategy=recursive -X patience -X ours initial..anotherpick && + test_expect_code 128 git cherry-pick -s -m $mainline --strategy=recursive -X patience -X ours --edit initial..anotherpick && test_path_is_dir .git/sequencer && test_path_is_file .git/sequencer/head && test_path_is_file .git/sequencer/todo && @@ -84,6 +84,36 @@ test_expect_success 'cherry-pick persists opts correctly' ' ours EOF git config --file=.git/sequencer/opts --get-all options.strategy-option >actual && + test_cmp expect actual && + echo "true" >expect && + git config --file=.git/sequencer/opts --get-all options.edit >actual && + test_cmp expect actual +' + +test_expect_success 'revert persists opts correctly' ' + pristine_detach initial && + # to make sure that the session to revert a sequence + # gets interrupted, revert commits that are not in the history + # of HEAD. + test_expect_code 1 git revert -s --strategy=recursive -X patience -X ours --no-edit picked yetanotherpick && + test_path_is_dir .git/sequencer && + test_path_is_file .git/sequencer/head && + test_path_is_file .git/sequencer/todo && + test_path_is_file .git/sequencer/opts && + echo "true" >expect && + git config --file=.git/sequencer/opts --get-all options.signoff >actual && + test_cmp expect actual && + echo "recursive" >expect && + git config --file=.git/sequencer/opts --get-all options.strategy >actual && + test_cmp expect actual && + cat >expect <<-\EOF && + patience + ours + EOF + git config --file=.git/sequencer/opts --get-all options.strategy-option >actual && + test_cmp expect actual && + echo "false" >expect && + git config --file=.git/sequencer/opts --get-all options.edit >actual && test_cmp expect actual ' diff --git a/t/t4014-format-patch.sh b/t/t4014-format-patch.sh index cdd3154..712d4b5 100755 --- a/t/t4014-format-patch.sh +++ b/t/t4014-format-patch.sh @@ -386,6 +386,30 @@ test_expect_success 'reroll count (-v)' ' ! grep -v "^Subject: \[PATCH v4 [0-3]/3\] " subjects ' +test_expect_success 'reroll count (-v) with a fractional number' ' + rm -fr patches && + git format-patch -o patches --cover-letter -v4.4 main..side >list && + ! grep -v "^patches/v4.4-000[0-3]-" list && + sed -n -e "/^Subject: /p" $(cat list) >subjects && + ! grep -v "^Subject: \[PATCH v4.4 [0-3]/3\] " subjects +' + +test_expect_success 'reroll (-v) count with a non number' ' + rm -fr patches && + git format-patch -o patches --cover-letter -v4rev2 main..side >list && + ! grep -v "^patches/v4rev2-000[0-3]-" list && + sed -n -e "/^Subject: /p" $(cat list) >subjects && + ! grep -v "^Subject: \[PATCH v4rev2 [0-3]/3\] " subjects +' + +test_expect_success 'reroll (-v) count with a non-pathname character' ' + rm -fr patches && + git format-patch -o patches --cover-letter -v4---..././../--1/.2// main..side >list && + ! grep -v "patches/v4-\.-\.-\.-1-\.2-000[0-3]-" list && + sed -n -e "/^Subject: /p" $(cat list) >subjects && + ! grep -v "^Subject: \[PATCH v4---\.\.\./\./\.\./--1/\.2// [0-3]/3\] " subjects +' + check_threading () { expect="$1" && shift && @@ -2255,6 +2279,16 @@ test_expect_success 'interdiff: reroll-count' ' test_i18ngrep "^Interdiff ..* v1:$" v2-0000-cover-letter.patch ' +test_expect_success 'interdiff: reroll-count with a non-integer' ' + git format-patch --cover-letter --interdiff=boop~2 -v2.2 -1 boop && + test_i18ngrep "^Interdiff:$" v2.2-0000-cover-letter.patch +' + +test_expect_success 'interdiff: reroll-count with a integer' ' + git format-patch --cover-letter --interdiff=boop~2 -v2 -1 boop && + test_i18ngrep "^Interdiff ..* v1:$" v2-0000-cover-letter.patch +' + test_expect_success 'interdiff: solo-patch' ' cat >expect <<-\EOF && +fleep diff --git a/t/t5310-pack-bitmaps.sh b/t/t5310-pack-bitmaps.sh index 40b9f63..f53efc8 100755 --- a/t/t5310-pack-bitmaps.sh +++ b/t/t5310-pack-bitmaps.sh @@ -554,4 +554,42 @@ test_expect_success 'fetch with bitmaps can reuse old base' ' ) ' +test_expect_success 'pack.preferBitmapTips' ' + git init repo && + test_when_finished "rm -fr repo" && + ( + cd repo && + + # create enough commits that not all are receive bitmap + # coverage even if they are all at the tip of some reference. + test_commit_bulk --message="%s" 103 && + + git rev-list HEAD >commits.raw && + sort <commits.raw >commits && + + git log --format="create refs/tags/%s %H" HEAD >refs && + git update-ref --stdin <refs && + + git repack -adb && + test-tool bitmap list-commits | sort >bitmaps && + + # remember which commits did not receive bitmaps + comm -13 bitmaps commits >before && + test_file_not_empty before && + + # mark the commits which did not receive bitmaps as preferred, + # and generate the bitmap again + perl -pe "s{^}{create refs/tags/include/$. }" <before | + git update-ref --stdin && + git -c pack.preferBitmapTips=refs/tags/include repack -adb && + + # finally, check that the commit(s) without bitmap coverage + # are not the same ones as before + test-tool bitmap list-commits | sort >bitmaps && + comm -13 bitmaps commits >after && + + ! test_cmp before after + ) +' + test_done diff --git a/t/t5319-multi-pack-index.sh b/t/t5319-multi-pack-index.sh index b4afab1..5641d15 100755 --- a/t/t5319-multi-pack-index.sh +++ b/t/t5319-multi-pack-index.sh @@ -234,6 +234,48 @@ test_expect_success 'warn on improper hash version' ' ) ' +test_expect_success 'midx picks objects from preferred pack' ' + test_when_finished rm -rf preferred.git && + git init --bare preferred.git && + ( + cd preferred.git && + + a=$(echo "a" | git hash-object -w --stdin) && + b=$(echo "b" | git hash-object -w --stdin) && + c=$(echo "c" | git hash-object -w --stdin) && + + # Set up two packs, duplicating the object "B" at different + # offsets. + # + # Note that the "BC" pack (the one we choose as preferred) sorts + # lexically after the "AB" pack, meaning that omitting the + # --preferred-pack argument would cause this test to fail (since + # the MIDX code would select the copy of "b" in the "AB" pack). + git pack-objects objects/pack/test-AB <<-EOF && + $a + $b + EOF + bc=$(git pack-objects objects/pack/test-BC <<-EOF + $b + $c + EOF + ) && + + git multi-pack-index --object-dir=objects \ + write --preferred-pack=test-BC-$bc.idx 2>err && + test_must_be_empty err && + + test-tool read-midx --show-objects objects >out && + + ofs=$(git show-index <objects/pack/test-BC-$bc.idx | grep $b | + cut -d" " -f1) && + printf "%s %s\tobjects/pack/test-BC-%s.pack\n" \ + "$b" "$ofs" "$bc" >expect && + grep ^$b out >actual && + + test_cmp expect actual + ) +' test_expect_success 'verify multi-pack-index success' ' git multi-pack-index verify --object-dir=$objdir diff --git a/t/t5601-clone.sh b/t/t5601-clone.sh index e7e6c08..329ae59 100755 --- a/t/t5601-clone.sh +++ b/t/t5601-clone.sh @@ -759,6 +759,15 @@ test_expect_success 'partial clone using HTTP' ' partial_clone "$HTTPD_DOCUMENT_ROOT_PATH/server" "$HTTPD_URL/smart/server" ' +test_expect_success 'reject cloning shallow repository using HTTP' ' + test_when_finished "rm -rf repo" && + git clone --bare --no-local --depth=1 src "$HTTPD_DOCUMENT_ROOT_PATH/repo.git" && + test_must_fail git clone --reject-shallow $HTTPD_URL/smart/repo.git repo 2>err && + test_i18ngrep -e "source repository is shallow, reject to clone." err && + + git clone --no-reject-shallow $HTTPD_URL/smart/repo.git repo +' + # DO NOT add non-httpd-specific tests here, because the last part of this # test script is only executed when httpd is available and enabled. diff --git a/t/t5606-clone-options.sh b/t/t5606-clone-options.sh index 428b0aa..3a595c0 100755 --- a/t/t5606-clone-options.sh +++ b/t/t5606-clone-options.sh @@ -11,7 +11,8 @@ test_expect_success 'setup' ' mkdir parent && (cd parent && git init && echo one >file && git add file && - git commit -m one) + git commit -m one) && + git clone --depth=1 --no-local parent shallow-repo ' @@ -45,6 +46,30 @@ test_expect_success 'disallows --bare with --separate-git-dir' ' ' +test_expect_success 'reject cloning shallow repository' ' + test_when_finished "rm -rf repo" && + test_must_fail git clone --reject-shallow shallow-repo out 2>err && + test_i18ngrep -e "source repository is shallow, reject to clone." err && + + git clone --no-reject-shallow shallow-repo repo +' + +test_expect_success 'reject cloning non-local shallow repository' ' + test_when_finished "rm -rf repo" && + test_must_fail git clone --reject-shallow --no-local shallow-repo out 2>err && + test_i18ngrep -e "source repository is shallow, reject to clone." err && + + git clone --no-reject-shallow --no-local shallow-repo repo +' + +test_expect_success 'succeed cloning normal repository' ' + test_when_finished "rm -rf chilad1 child2 child3 child4 " && + git clone --reject-shallow parent child1 && + git clone --reject-shallow --no-local parent child2 && + git clone --no-reject-shallow parent child3 && + git clone --no-reject-shallow --no-local parent child4 +' + test_expect_success 'uses "origin" for default remote name' ' git clone parent clone-default-origin && diff --git a/t/t5611-clone-config.sh b/t/t5611-clone-config.sh index 9f555b8..f8625f9 100755 --- a/t/t5611-clone-config.sh +++ b/t/t5611-clone-config.sh @@ -95,6 +95,31 @@ test_expect_success 'clone -c remote.<remote>.fetch=<refspec> --origin=<name>' ' test_cmp expect actual ' +test_expect_success 'set up shallow repository' ' + git clone --depth=1 --no-local . shallow-repo +' + +test_expect_success 'clone.rejectshallow=true should reject cloning shallow repo' ' + test_when_finished "rm -rf out" && + test_must_fail git -c clone.rejectshallow=true clone --no-local shallow-repo out 2>err && + test_i18ngrep -e "source repository is shallow, reject to clone." err && + + git -c clone.rejectshallow=false clone --no-local shallow-repo out +' + +test_expect_success 'option --[no-]reject-shallow override clone.rejectshallow config' ' + test_when_finished "rm -rf out" && + test_must_fail git -c clone.rejectshallow=false clone --reject-shallow --no-local shallow-repo out 2>err && + test_i18ngrep -e "source repository is shallow, reject to clone." err && + + git -c clone.rejectshallow=true clone --no-reject-shallow --no-local shallow-repo out +' + +test_expect_success 'clone.rejectshallow=true should succeed cloning normal repo' ' + test_when_finished "rm -rf out" && + git -c clone.rejectshallow=true clone --no-local . out +' + test_expect_success MINGW 'clone -c core.hideDotFiles' ' test_commit attributes .gitattributes "" && rm -rf child && diff --git a/t/t6300-for-each-ref.sh b/t/t6300-for-each-ref.sh index cac7f44..2e7c32d 100755 --- a/t/t6300-for-each-ref.sh +++ b/t/t6300-for-each-ref.sh @@ -1134,4 +1134,14 @@ test_expect_success 'for-each-ref --ignore-case works on multiple sort keys' ' test_cmp expect actual ' +test_expect_success 'for-each-ref reports broken tags' ' + git tag -m "good tag" broken-tag-good HEAD && + git cat-file tag broken-tag-good >good && + sed s/commit/blob/ <good >bad && + bad=$(git hash-object -w -t tag bad) && + git update-ref refs/tags/broken-tag-bad $bad && + test_must_fail git for-each-ref --format="%(*objectname)" \ + refs/tags/broken-tag-* +' + test_done diff --git a/t/t6423-merge-rename-directories.sh b/t/t6423-merge-rename-directories.sh index 5d3b711..379aac0 100755 --- a/t/t6423-merge-rename-directories.sh +++ b/t/t6423-merge-rename-directories.sh @@ -4895,6 +4895,77 @@ test_expect_merge_algorithm failure success '12f: Trivial directory resolve, cac ) ' +# Testcase 12g, Testcase with two kinds of "relevant" renames +# Commit O: somefile_O, subdir/{a_O,b_O} +# Commit A: somefile_A, subdir/{a_O,b_O,c_A} +# Commit B: newfile_B, newdir/{a_B,b_B} +# Expected: newfile_{merged}, newdir/{a_B,b_B,c_A} + +test_setup_12g () { + test_create_repo 12g && + ( + cd 12g && + + mkdir -p subdir && + test_write_lines upon a time there was a >somefile && + test_write_lines 1 2 3 4 5 6 7 8 9 10 >subdir/a && + test_write_lines one two three four five six >subdir/b && + git add . && + test_tick && + git commit -m "O" && + + git branch O && + git branch A && + git branch B && + + git switch A && + test_write_lines once upon a time there was a >somefile && + > subdir/c && + git add somefile subdir/c && + test_tick && + git commit -m "A" && + + git checkout B && + git mv somefile newfile && + git mv subdir newdir && + echo repo >>newfile && + test_write_lines 1 2 3 4 5 6 7 8 9 10 11 >newdir/a && + test_write_lines one two three four five six seven >newdir/b && + git add newfile newdir && + test_tick && + git commit -m "B" + ) +} + +test_expect_success '12g: Testcase with two kinds of "relevant" renames' ' + test_setup_12g && + ( + cd 12g && + + git checkout A^0 && + + git -c merge.directoryRenames=true merge -s recursive B^0 && + + test_write_lines once upon a time there was a repo >expect && + test_cmp expect newfile && + + git ls-files -s >out && + test_line_count = 4 out && + + git rev-parse >actual \ + HEAD:newdir/a HEAD:newdir/b HEAD:newdir/c && + git rev-parse >expect \ + B:newdir/a B:newdir/b A:subdir/c && + test_cmp expect actual && + + test_must_fail git rev-parse HEAD:subdir/a && + test_must_fail git rev-parse HEAD:subdir/b && + test_must_fail git rev-parse HEAD:subdir/c && + test_path_is_missing subdir/ && + test_path_is_file newdir/c + ) +' + ########################################################################### # SECTION 13: Checking informational and conflict messages # diff --git a/t/t7502-commit-porcelain.sh b/t/t7502-commit-porcelain.sh index 6396897..38a532d 100755 --- a/t/t7502-commit-porcelain.sh +++ b/t/t7502-commit-porcelain.sh @@ -38,6 +38,16 @@ check_summary_oneline() { test_cmp exp act } +trailer_commit_base () { + echo "fun" >>file && + git add file && + git commit -s --trailer "Signed-off-by=C1 E1 " \ + --trailer "Helped-by:C2 E2 " \ + --trailer "Reported-by=C3 E3" \ + --trailer "Mentored-by:C4 E4" \ + -m "hello" +} + test_expect_success 'output summary format' ' echo new >file1 && @@ -154,6 +164,308 @@ test_expect_success 'sign off' ' ' +test_expect_success 'commit --trailer with "="' ' + trailer_commit_base && + cat >expected <<-\EOF && + hello + + Signed-off-by: C O Mitter <committer@example.com> + Signed-off-by: C1 E1 + Helped-by: C2 E2 + Reported-by: C3 E3 + Mentored-by: C4 E4 + EOF + git cat-file commit HEAD >commit.msg && + sed -e "1,/^\$/d" commit.msg >actual && + test_cmp expected actual +' + +test_expect_success 'commit --trailer with -c and "replace" as ifexists' ' + trailer_commit_base && + cat >expected <<-\EOF && + hello + + Signed-off-by: C O Mitter <committer@example.com> + Signed-off-by: C1 E1 + Reported-by: C3 E3 + Mentored-by: C4 E4 + Helped-by: C3 E3 + EOF + git -c trailer.ifexists="replace" \ + commit --trailer "Mentored-by: C4 E4" \ + --trailer "Helped-by: C3 E3" \ + --amend && + git cat-file commit HEAD >commit.msg && + sed -e "1,/^\$/d" commit.msg >actual && + test_cmp expected actual +' + +test_expect_success 'commit --trailer with -c and "add" as ifexists' ' + trailer_commit_base && + cat >expected <<-\EOF && + hello + + Signed-off-by: C O Mitter <committer@example.com> + Signed-off-by: C1 E1 + Helped-by: C2 E2 + Reported-by: C3 E3 + Mentored-by: C4 E4 + Reported-by: C3 E3 + Mentored-by: C4 E4 + EOF + git -c trailer.ifexists="add" \ + commit --trailer "Reported-by: C3 E3" \ + --trailer "Mentored-by: C4 E4" \ + --amend && + git cat-file commit HEAD >commit.msg && + sed -e "1,/^\$/d" commit.msg >actual && + test_cmp expected actual +' + +test_expect_success 'commit --trailer with -c and "donothing" as ifexists' ' + trailer_commit_base && + cat >expected <<-\EOF && + hello + + Signed-off-by: C O Mitter <committer@example.com> + Signed-off-by: C1 E1 + Helped-by: C2 E2 + Reported-by: C3 E3 + Mentored-by: C4 E4 + Reviewed-by: C6 E6 + EOF + git -c trailer.ifexists="donothing" \ + commit --trailer "Mentored-by: C5 E5" \ + --trailer "Reviewed-by: C6 E6" \ + --amend && + git cat-file commit HEAD >commit.msg && + sed -e "1,/^\$/d" commit.msg >actual && + test_cmp expected actual +' + +test_expect_success 'commit --trailer with -c and "addIfDifferent" as ifexists' ' + trailer_commit_base && + cat >expected <<-\EOF && + hello + + Signed-off-by: C O Mitter <committer@example.com> + Signed-off-by: C1 E1 + Helped-by: C2 E2 + Reported-by: C3 E3 + Mentored-by: C4 E4 + Mentored-by: C5 E5 + EOF + git -c trailer.ifexists="addIfDifferent" \ + commit --trailer "Reported-by: C3 E3" \ + --trailer "Mentored-by: C5 E5" \ + --amend && + git cat-file commit HEAD >commit.msg && + sed -e "1,/^\$/d" commit.msg >actual && + test_cmp expected actual +' + +test_expect_success 'commit --trailer with -c and "addIfDifferentNeighbor" as ifexists' ' + trailer_commit_base && + cat >expected <<-\EOF && + hello + + Signed-off-by: C O Mitter <committer@example.com> + Signed-off-by: C1 E1 + Helped-by: C2 E2 + Reported-by: C3 E3 + Mentored-by: C4 E4 + Reported-by: C3 E3 + EOF + git -c trailer.ifexists="addIfDifferentNeighbor" \ + commit --trailer "Mentored-by: C4 E4" \ + --trailer "Reported-by: C3 E3" \ + --amend && + git cat-file commit HEAD >commit.msg && + sed -e "1,/^\$/d" commit.msg >actual && + test_cmp expected actual +' + +test_expect_success 'commit --trailer with -c and "end" as where' ' + trailer_commit_base && + cat >expected <<-\EOF && + hello + + Signed-off-by: C O Mitter <committer@example.com> + Signed-off-by: C1 E1 + Helped-by: C2 E2 + Reported-by: C3 E3 + Mentored-by: C4 E4 + Reported-by: C3 E3 + Mentored-by: C4 E4 + EOF + git -c trailer.where="end" \ + commit --trailer "Reported-by: C3 E3" \ + --trailer "Mentored-by: C4 E4" \ + --amend && + git cat-file commit HEAD >commit.msg && + sed -e "1,/^\$/d" commit.msg >actual && + test_cmp expected actual +' + +test_expect_success 'commit --trailer with -c and "start" as where' ' + trailer_commit_base && + cat >expected <<-\EOF && + hello + + Signed-off-by: C1 E1 + Signed-off-by: C O Mitter <committer@example.com> + Signed-off-by: C1 E1 + Helped-by: C2 E2 + Reported-by: C3 E3 + Mentored-by: C4 E4 + EOF + git -c trailer.where="start" \ + commit --trailer "Signed-off-by: C O Mitter <committer@example.com>" \ + --trailer "Signed-off-by: C1 E1" \ + --amend && + git cat-file commit HEAD >commit.msg && + sed -e "1,/^\$/d" commit.msg >actual && + test_cmp expected actual +' + +test_expect_success 'commit --trailer with -c and "after" as where' ' + trailer_commit_base && + cat >expected <<-\EOF && + hello + + Signed-off-by: C O Mitter <committer@example.com> + Signed-off-by: C1 E1 + Helped-by: C2 E2 + Reported-by: C3 E3 + Mentored-by: C4 E4 + Mentored-by: C5 E5 + EOF + git -c trailer.where="after" \ + commit --trailer "Mentored-by: C4 E4" \ + --trailer "Mentored-by: C5 E5" \ + --amend && + git cat-file commit HEAD >commit.msg && + sed -e "1,/^\$/d" commit.msg >actual && + test_cmp expected actual +' + +test_expect_success 'commit --trailer with -c and "before" as where' ' + trailer_commit_base && + cat >expected <<-\EOF && + hello + + Signed-off-by: C O Mitter <committer@example.com> + Signed-off-by: C1 E1 + Helped-by: C2 E2 + Reported-by: C3 E3 + Mentored-by: C2 E2 + Mentored-by: C3 E3 + Mentored-by: C4 E4 + EOF + git -c trailer.where="before" \ + commit --trailer "Mentored-by: C3 E3" \ + --trailer "Mentored-by: C2 E2" \ + --amend && + git cat-file commit HEAD >commit.msg && + sed -e "1,/^\$/d" commit.msg >actual && + test_cmp expected actual +' + +test_expect_success 'commit --trailer with -c and "donothing" as ifmissing' ' + trailer_commit_base && + cat >expected <<-\EOF && + hello + + Signed-off-by: C O Mitter <committer@example.com> + Signed-off-by: C1 E1 + Helped-by: C2 E2 + Reported-by: C3 E3 + Mentored-by: C4 E4 + Helped-by: C5 E5 + EOF + git -c trailer.ifmissing="donothing" \ + commit --trailer "Helped-by: C5 E5" \ + --trailer "Based-by: C6 E6" \ + --amend && + git cat-file commit HEAD >commit.msg && + sed -e "1,/^\$/d" commit.msg >actual && + test_cmp expected actual +' + +test_expect_success 'commit --trailer with -c and "add" as ifmissing' ' + trailer_commit_base && + cat >expected <<-\EOF && + hello + + Signed-off-by: C O Mitter <committer@example.com> + Signed-off-by: C1 E1 + Helped-by: C2 E2 + Reported-by: C3 E3 + Mentored-by: C4 E4 + Helped-by: C5 E5 + Based-by: C6 E6 + EOF + git -c trailer.ifmissing="add" \ + commit --trailer "Helped-by: C5 E5" \ + --trailer "Based-by: C6 E6" \ + --amend && + git cat-file commit HEAD >commit.msg && + sed -e "1,/^\$/d" commit.msg >actual && + test_cmp expected actual +' + +test_expect_success 'commit --trailer with -c ack.key ' ' + echo "fun" >>file1 && + git add file1 && + cat >expected <<-\EOF && + hello + + Acked-by: Peff + EOF + git -c trailer.ack.key="Acked-by" \ + commit --trailer "ack = Peff" -m "hello" && + git cat-file commit HEAD >commit.msg && + sed -e "1,/^\$/d" commit.msg >actual && + test_cmp expected actual +' + +test_expect_success 'commit --trailer with -c and ":=#" as separators' ' + echo "fun" >>file1 && + git add file1 && + cat >expected <<-\EOF && + I hate bug + + Bug #42 + EOF + git -c trailer.separators=":=#" \ + -c trailer.bug.key="Bug #" \ + commit --trailer "bug = 42" -m "I hate bug" && + git cat-file commit HEAD >commit.msg && + sed -e "1,/^\$/d" commit.msg >actual && + test_cmp expected actual +' + +test_expect_success 'commit --trailer with -c and command' ' + trailer_commit_base && + cat >expected <<-\EOF && + hello + + Signed-off-by: C O Mitter <committer@example.com> + Signed-off-by: C1 E1 + Helped-by: C2 E2 + Mentored-by: C4 E4 + Reported-by: A U Thor <author@example.com> + EOF + git -c trailer.report.key="Reported-by: " \ + -c trailer.report.ifexists="replace" \ + -c trailer.report.command="NAME=\"\$ARG\"; test -n \"\$NAME\" && \ + git log --author=\"\$NAME\" -1 --format=\"format:%aN <%aE>\" || true" \ + commit --trailer "report = author" --amend && + git cat-file commit HEAD >commit.msg && + sed -e "1,/^\$/d" commit.msg >actual && + test_cmp expected actual +' + test_expect_success 'multiple -m' ' >negative && diff --git a/transport.c b/transport.c index 1c4ab67..ef66e73 100644 --- a/transport.c +++ b/transport.c @@ -236,6 +236,9 @@ static int set_git_option(struct git_transport_options *opts, list_objects_filter_die_if_populated(&opts->filter_options); parse_list_objects_filter(&opts->filter_options, value); return 0; + } else if (!strcmp(name, TRANS_OPT_REJECT_SHALLOW)) { + opts->reject_shallow = !!value; + return 0; } return 1; } @@ -370,6 +373,7 @@ static int fetch_refs_via_pack(struct transport *transport, args.stateless_rpc = transport->stateless_rpc; args.server_options = transport->server_options; args.negotiation_tips = data->options.negotiation_tips; + args.reject_shallow_remote = transport->smart_options->reject_shallow; if (!data->got_remote_heads) { int i; @@ -1452,6 +1456,8 @@ int transport_disconnect(struct transport *transport) int ret = 0; if (transport->vtable->disconnect) ret = transport->vtable->disconnect(transport); + if (transport->got_remote_refs) + free_refs((void *)transport->remote_refs); free(transport); return ret; } diff --git a/transport.h b/transport.h index 24e1579..4d5db0a 100644 --- a/transport.h +++ b/transport.h @@ -14,6 +14,7 @@ struct git_transport_options { unsigned check_self_contained_and_connected : 1; unsigned self_contained_and_connected : 1; unsigned update_shallow : 1; + unsigned reject_shallow : 1; unsigned deepen_relative : 1; /* see documentation of corresponding flag in fetch-pack.h */ @@ -194,6 +195,9 @@ void transport_check_allowed(const char *type); /* Aggressively fetch annotated tags if possible */ #define TRANS_OPT_FOLLOWTAGS "followtags" +/* Reject shallow repo transport */ +#define TRANS_OPT_REJECT_SHALLOW "rejectshallow" + /* Accept refs that may update .git/shallow without --depth */ #define TRANS_OPT_UPDATE_SHALLOW "updateshallow" diff --git a/unix-socket.c b/unix-socket.c index 19ed48b..e0be1ba 100644 --- a/unix-socket.c +++ b/unix-socket.c @@ -1,13 +1,7 @@ #include "cache.h" #include "unix-socket.h" -static int unix_stream_socket(void) -{ - int fd = socket(AF_UNIX, SOCK_STREAM, 0); - if (fd < 0) - die_errno("unable to create socket"); - return fd; -} +#define DEFAULT_UNIX_STREAM_LISTEN_BACKLOG (5) static int chdir_len(const char *orig, int len) { @@ -36,16 +30,23 @@ static void unix_sockaddr_cleanup(struct unix_sockaddr_context *ctx) } static int unix_sockaddr_init(struct sockaddr_un *sa, const char *path, - struct unix_sockaddr_context *ctx) + struct unix_sockaddr_context *ctx, + int disallow_chdir) { int size = strlen(path) + 1; ctx->orig_dir = NULL; if (size > sizeof(sa->sun_path)) { - const char *slash = find_last_dir_sep(path); + const char *slash; const char *dir; struct strbuf cwd = STRBUF_INIT; + if (disallow_chdir) { + errno = ENAMETOOLONG; + return -1; + } + + slash = find_last_dir_sep(path); if (!slash) { errno = ENAMETOOLONG; return -1; @@ -71,15 +72,18 @@ static int unix_sockaddr_init(struct sockaddr_un *sa, const char *path, return 0; } -int unix_stream_connect(const char *path) +int unix_stream_connect(const char *path, int disallow_chdir) { - int fd, saved_errno; + int fd = -1, saved_errno; struct sockaddr_un sa; struct unix_sockaddr_context ctx; - if (unix_sockaddr_init(&sa, path, &ctx) < 0) + if (unix_sockaddr_init(&sa, path, &ctx, disallow_chdir) < 0) return -1; - fd = unix_stream_socket(); + fd = socket(AF_UNIX, SOCK_STREAM, 0); + if (fd < 0) + goto fail; + if (connect(fd, (struct sockaddr *)&sa, sizeof(sa)) < 0) goto fail; unix_sockaddr_cleanup(&ctx); @@ -87,28 +91,36 @@ int unix_stream_connect(const char *path) fail: saved_errno = errno; + if (fd != -1) + close(fd); unix_sockaddr_cleanup(&ctx); - close(fd); errno = saved_errno; return -1; } -int unix_stream_listen(const char *path) +int unix_stream_listen(const char *path, + const struct unix_stream_listen_opts *opts) { - int fd, saved_errno; + int fd = -1, saved_errno; + int backlog; struct sockaddr_un sa; struct unix_sockaddr_context ctx; unlink(path); - if (unix_sockaddr_init(&sa, path, &ctx) < 0) + if (unix_sockaddr_init(&sa, path, &ctx, opts->disallow_chdir) < 0) return -1; - fd = unix_stream_socket(); + fd = socket(AF_UNIX, SOCK_STREAM, 0); + if (fd < 0) + goto fail; if (bind(fd, (struct sockaddr *)&sa, sizeof(sa)) < 0) goto fail; - if (listen(fd, 5) < 0) + backlog = opts->listen_backlog_size; + if (backlog <= 0) + backlog = DEFAULT_UNIX_STREAM_LISTEN_BACKLOG; + if (listen(fd, backlog) < 0) goto fail; unix_sockaddr_cleanup(&ctx); @@ -116,8 +128,9 @@ int unix_stream_listen(const char *path) fail: saved_errno = errno; + if (fd != -1) + close(fd); unix_sockaddr_cleanup(&ctx); - close(fd); errno = saved_errno; return -1; } diff --git a/unix-socket.h b/unix-socket.h index e271aee..8542cdd 100644 --- a/unix-socket.h +++ b/unix-socket.h @@ -1,7 +1,15 @@ #ifndef UNIX_SOCKET_H #define UNIX_SOCKET_H -int unix_stream_connect(const char *path); -int unix_stream_listen(const char *path); +struct unix_stream_listen_opts { + int listen_backlog_size; + unsigned int disallow_chdir:1; +}; + +#define UNIX_STREAM_LISTEN_OPTS_INIT { 0 } + +int unix_stream_connect(const char *path, int disallow_chdir); +int unix_stream_listen(const char *path, + const struct unix_stream_listen_opts *opts); #endif /* UNIX_SOCKET_H */ diff --git a/unix-stream-server.c b/unix-stream-server.c new file mode 100644 index 0000000..efa2a20 --- /dev/null +++ b/unix-stream-server.c @@ -0,0 +1,125 @@ +#include "cache.h" +#include "lockfile.h" +#include "unix-socket.h" +#include "unix-stream-server.h" + +#define DEFAULT_LOCK_TIMEOUT (100) + +/* + * Try to connect to a unix domain socket at `path` (if it exists) and + * see if there is a server listening. + * + * We don't know if the socket exists, whether a server died and + * failed to cleanup, or whether we have a live server listening, so + * we "poke" it. + * + * We immediately hangup without sending/receiving any data because we + * don't know anything about the protocol spoken and don't want to + * block while writing/reading data. It is sufficient to just know + * that someone is listening. + */ +static int is_another_server_alive(const char *path, + const struct unix_stream_listen_opts *opts) +{ + int fd = unix_stream_connect(path, opts->disallow_chdir); + if (fd >= 0) { + close(fd); + return 1; + } + + return 0; +} + +int unix_ss_create(const char *path, + const struct unix_stream_listen_opts *opts, + long timeout_ms, + struct unix_ss_socket **new_server_socket) +{ + struct lock_file lock = LOCK_INIT; + int fd_socket; + struct unix_ss_socket *server_socket; + + *new_server_socket = NULL; + + if (timeout_ms < 0) + timeout_ms = DEFAULT_LOCK_TIMEOUT; + + /* + * Create a lock at "<path>.lock" if we can. + */ + if (hold_lock_file_for_update_timeout(&lock, path, 0, timeout_ms) < 0) + return -1; + + /* + * If another server is listening on "<path>" give up. We do not + * want to create a socket and steal future connections from them. + */ + if (is_another_server_alive(path, opts)) { + rollback_lock_file(&lock); + errno = EADDRINUSE; + return -2; + } + + /* + * Create and bind to a Unix domain socket at "<path>". + */ + fd_socket = unix_stream_listen(path, opts); + if (fd_socket < 0) { + int saved_errno = errno; + rollback_lock_file(&lock); + errno = saved_errno; + return -1; + } + + server_socket = xcalloc(1, sizeof(*server_socket)); + server_socket->path_socket = strdup(path); + server_socket->fd_socket = fd_socket; + lstat(path, &server_socket->st_socket); + + *new_server_socket = server_socket; + + /* + * Always rollback (just delete) "<path>.lock" because we already created + * "<path>" as a socket and do not want to commit_lock to do the atomic + * rename trick. + */ + rollback_lock_file(&lock); + + return 0; +} + +void unix_ss_free(struct unix_ss_socket *server_socket) +{ + if (!server_socket) + return; + + if (server_socket->fd_socket >= 0) { + if (!unix_ss_was_stolen(server_socket)) + unlink(server_socket->path_socket); + close(server_socket->fd_socket); + } + + free(server_socket->path_socket); + free(server_socket); +} + +int unix_ss_was_stolen(struct unix_ss_socket *server_socket) +{ + struct stat st_now; + + if (!server_socket) + return 0; + + if (lstat(server_socket->path_socket, &st_now) == -1) + return 1; + + if (st_now.st_ino != server_socket->st_socket.st_ino) + return 1; + if (st_now.st_dev != server_socket->st_socket.st_dev) + return 1; + + if (!S_ISSOCK(st_now.st_mode)) + return 1; + + return 0; +} diff --git a/unix-stream-server.h b/unix-stream-server.h new file mode 100644 index 0000000..ae2712b --- /dev/null +++ b/unix-stream-server.h @@ -0,0 +1,33 @@ +#ifndef UNIX_STREAM_SERVER_H +#define UNIX_STREAM_SERVER_H + +#include "unix-socket.h" + +struct unix_ss_socket { + char *path_socket; + struct stat st_socket; + int fd_socket; +}; + +/* + * Create a Unix Domain Socket at the given path under the protection + * of a '.lock' lockfile. + * + * Returns 0 on success, -1 on error, -2 if socket is in use. + */ +int unix_ss_create(const char *path, + const struct unix_stream_listen_opts *opts, + long timeout_ms, + struct unix_ss_socket **server_socket); + +/* + * Close and delete the socket. + */ +void unix_ss_free(struct unix_ss_socket *server_socket); + +/* + * Return 1 if the inode of the pathname to our socket changes. + */ +int unix_ss_was_stolen(struct unix_ss_socket *server_socket); + +#endif /* UNIX_STREAM_SERVER_H */ diff --git a/unpack-trees.c b/unpack-trees.c index 29029f3..8a1afbc 100644 --- a/unpack-trees.c +++ b/unpack-trees.c @@ -16,6 +16,7 @@ #include "fsmonitor.h" #include "object-store.h" #include "promisor-remote.h" +#include "entry.h" /* * Error messages expected by scripts out of plumbing commands such as |