path: root/refs.c
AgeCommit message (Collapse)Author
2009-03-07Support '*' in the middle of a refspecDaniel Barkalow
In order to keep the requirements strict, each * has to be a full path component, and there may only be one * per side. This requirement is enforced entirely by check_ref_format(); the matching implementation will substitute the whatever matches the * in the lhs for the * in the rhs. Signed-off-by: Daniel Barkalow <> Signed-off-by: Junio C Hamano <>
2009-03-07Keep '*' in pattern refspecsDaniel Barkalow
In order to do anything more capable with refspecs, the first step is to keep the entire input. Additionally, validate patterns by checking for the ref matching the rules for a pattern as given by check_ref_format(). This requires a slight change to check_ref_format() to make it enforce the requirement that the '*' immediately follow a '/'. Signed-off-by: Daniel Barkalow <> Signed-off-by: Junio C Hamano <>
2009-02-26refactor find_ref_by_name() to accept const listJeff King
Since it doesn't actually touch its argument, this makes sense. However, we still want to return a non-const version (which requires a cast) so that this: struct ref *a, *b; a = find_ref_by_name(b); works. Unfortunately, you can also silently strip the const from a variable: struct ref *a; const struct ref *b; a = find_ref_by_name(b); This is a classic C const problem because there is no way to say "return the type with the same constness that was passed to us"; we provide the same semantics as standard library functions like strchr. Signed-off-by: Jeff King <> Signed-off-by: Jay Soffian <> Signed-off-by: Junio C Hamano <>
2009-02-11remote prune: warn dangling symrefsJunio C Hamano
If you prune from the remote "frotz" that deleted the ref your tracking branch remotes/frotz/HEAD points at, the symbolic ref will become dangling. We used to detect this as an error condition and issued a message every time refs are enumerated. This stops the error message, but moves the warning to "remote prune". Signed-off-by: Junio C Hamano <>
2009-01-20Introduce for_each_recent_reflog_ent().Junio C Hamano
This can be used to scan only the last few kilobytes of a reflog, as a cheap optimization when the data you are looking for is likely to be found near the end of it. The caller is expected to fall back to the full scan if that is not the case. Signed-off-by: Junio C Hamano <>
2008-11-11Merge branch 'maint'Junio C Hamano
* maint: Fix non-literal format in printf-style calls git-submodule: Avoid printing a spurious message. git ls-remote: make usage string match manpage Makefile: help people who run 'make check' by mistake
2008-11-11Fix non-literal format in printf-style callsDaniel Lowe
These were found using gcc 4.3.2-1ubuntu11 with the warning: warning: format not a string literal and no format arguments Incorporated suggestions from Brandon Casey <>. Signed-off-by: Junio C Hamano <>
2008-11-09Merge branch 'maint'Junio C Hamano
* maint: GIT Update RPM spec for the new location of git-cvsserver. push: fix local refs update if already up-to-date do not force write of packed refs Conflicts: builtin-revert.c
2008-11-09Merge branch 'cb/maint-update-ref-fix' into maintJunio C Hamano
* cb/maint-update-ref-fix: push: fix local refs update if already up-to-date do not force write of packed refs
2008-11-09Merge branch 'ar/maint-mksnpath' into maintJunio C Hamano
* ar/maint-mksnpath: Use git_pathdup instead of xstrdup(git_path(...)) git_pathdup: returns xstrdup-ed copy of the formatted path Fix potentially dangerous use of git_path in ref.c Add git_snpath: a .git path formatting routine with output buffer Fix potentially dangerous uses of mkpath and git_path Fix mkpath abuse in dwim_ref and dwim_log of sha1_name.c Add mksnpath which allows you to specify the output buffer Conflicts: builtin-revert.c rerere.c
2008-11-09Merge branch 'mv/maint-branch-m-symref' into maintJunio C Hamano
* mv/maint-branch-m-symref: update-ref --no-deref -d: handle the case when the pointed ref is packed git branch -m: forbid renaming of a symref Fix git update-ref --no-deref -d. rename_ref(): handle the case when the reflog of a ref does not exist Fix git branch -m for symrefs.
2008-11-05do not force write of packed refsClemens Buchacher
We force writing a ref if it does not exist. Originally, we only had to look for the ref file to check if it existed. Now we have to look for a packed ref as well. Luckily, resolve_ref already does all the work for us. Signed-off-by: Clemens Buchacher <> Signed-off-by: Junio C Hamano <>
2008-11-05Merge branch 'ar/mksnpath'Junio C Hamano
* ar/mksnpath: Use git_pathdup instead of xstrdup(git_path(...)) git_pathdup: returns xstrdup-ed copy of the formatted path Fix potentially dangerous use of git_path in ref.c Add git_snpath: a .git path formatting routine with output buffer Fix potentially dangerous uses of mkpath and git_path Fix potentially dangerous uses of mkpath and git_path Fix mkpath abuse in dwim_ref and dwim_log of sha1_name.c Add mksnpath which allows you to specify the output buffer Conflicts: builtin-revert.c
2008-11-05Merge branch 'mv/maint-branch-m-symref'Junio C Hamano
* mv/maint-branch-m-symref: update-ref --no-deref -d: handle the case when the pointed ref is packed git branch -m: forbid renaming of a symref Fix git update-ref --no-deref -d. rename_ref(): handle the case when the reflog of a ref does not exist Fix git branch -m for symrefs.
2008-11-01update-ref --no-deref -d: handle the case when the pointed ref is packedMiklos Vajna
In this case we did nothing in the past, but we should delete the reference in fact. The problem was that when the symref is not packed but the referenced ref is packed, then we assumed that the symref is packed as well, but symrefs are never packed. Signed-off-by: Miklos Vajna <> Signed-off-by: Junio C Hamano <>
2008-10-31Merge branch 'ar/maint-mksnpath' into ar/mksnpathJunio C Hamano
* ar/maint-mksnpath: Use git_pathdup instead of xstrdup(git_path(...)) git_pathdup: returns xstrdup-ed copy of the formatted path Fix potentially dangerous use of git_path in ref.c Add git_snpath: a .git path formatting routine with output buffer Conflicts: builtin-revert.c refs.c rerere.c
2008-10-31Use git_pathdup instead of xstrdup(git_path(...))Alex Riesen
Signed-off-by: Junio C Hamano <>
2008-10-31Fix potentially dangerous use of git_path in ref.cAlex Riesen
Signed-off-by: Junio C Hamano <>
2008-10-30git branch -m: forbid renaming of a symrefMiklos Vajna
There may be cases where one would really want to rename the symbolic ref without changing its value, but "git branch -m" is not such a use-case. Signed-off-by: Miklos Vajna <> Signed-off-by: Junio C Hamano <>
2008-10-26rename_ref(): handle the case when the reflog of a ref does not existMiklos Vajna
We tried to check if a reflog of a ref is a symlink without first checking if it exists, which is a bug. Signed-off-by: Miklos Vajna <> Signed-off-by: Junio C Hamano <>
2008-10-26Fix git branch -m for symrefs.Miklos Vajna
This had two problems with symrefs. First, it copied the actual sha1 instead of the "pointer", second it failed to remove the old ref after a successful rename. Given that till now delete_ref() always dereferenced symrefs, a new parameters has been introduced to delete_ref() to allow deleting refs without a dereference. Signed-off-by: Miklos Vajna <> Signed-off-by: Junio C Hamano <>
2008-10-22Merge branch 'jc/maint-co-track'Junio C Hamano
* jc/maint-co-track: Enhance hold_lock_file_for_{update,append}() API demonstrate breakage of detached checkout with symbolic link HEAD Fix "checkout --track -b newbranch" on detached HEAD Conflicts: builtin-commit.c
2008-10-19Enhance hold_lock_file_for_{update,append}() APIJunio C Hamano
This changes the "die_on_error" boolean parameter to a mere "flags", and changes the existing callers of hold_lock_file_for_update/append() functions to pass LOCK_DIE_ON_ERROR. Signed-off-by: Junio C Hamano <>
2008-09-09refs: improve comments about "reading" argument of "resolve_ref"Christian Couder
The existing in-code comment was misleading. An access that is not "reading" may often be "writing", but it does not have to be. Signed-off-by: Christian Couder <> Signed-off-by: Junio C Hamano <>
2008-07-09Merge branch 'maint'Junio C Hamano
* maint: Start preparing release notes for git-submodule - Fix bugs in adding an existing repo as a module bash: offer only paths after '--' Remove unnecessary pack-*.keep file after successful git-clone make deleting a missing ref more quiet
2008-07-08avoid null SHA1 in oldest reflogJeff King
When the user specifies a ref by a reflog entry older than one we have (e.g., "HEAD@{20 years ago"}), we issue a warning and give them the "from" value of the oldest reflog entry. That is, we say "we don't know what happened before this entry, but before this we know we had some particular SHA1". However, the oldest reflog entry is often a creation event such as clone or branch creation. In this case, the entry claims that the ref went from "00000..." (the null sha1) to the new value, and the reflog lookup returns the null sha1. While this is technically correct (the entry tells us that the ref didn't exist at the specified time) it is not terribly useful to the end user. What they probably want instead is "the oldest useful sha1 that this ref ever had". This patch changes the behavior such that if the oldest ref would return the null sha1, it instead returns the first value the ref ever had. We never discovered this problem in the test scripts because we created "fake" reflogs that had only a specified segment of history. This patch updates the tests with a creation event at the beginning of history. Signed-off-by: Jeff King <> Acked-by: Shawn O. Pearce <> Signed-off-by: Junio C Hamano <>
2008-07-08make deleting a missing ref more quietJeff King
If git attempts to delete a ref, but the unlink of the ref file fails, we print a message to stderr. This is usually a good thing, but if the error is ENOENT, then it indicates that the ref has _already_ been deleted. And since that's our goal, it doesn't make sense to complain to the user. This harmonizes the error reporting behavior for the unpacked and packed cases; the packed case already printed nothing on ENOENT, but the unpacked printed unconditionally. Additionally, send-pack would, when deleting the tracking ref corresponding to a remote delete, print "Failed to delete" on any failure. This can be a misleading message, since we actually _did_ delete at the remote side, but we failed to delete locally. Rather than make the message more precise, let's just eliminate it entirely; the delete_ref routine already takes care of printing out a much more specific message about what went wrong. Signed-off-by: Jeff King <> Signed-off-by: Junio C Hamano <>
2008-05-25Merge branch 'db/clone-in-c'Junio C Hamano
* db/clone-in-c: Add test for cloning with "--reference" repo being a subset of source repo Add a test for another combination of --reference Test that --reference actually suppresses fetching referenced objects clone: fall back to copying if hardlinking fails builtin-clone.c: Need to closedir() in copy_or_link_directory() builtin-clone: fix initial checkout Build in clone Provide API access to init_db() Add a function to set a non-default work tree Allow for having for_each_ref() list extra refs Have a constant extern refspec for "--tags" Add a library function to add an alternate to the alternates file Add a lockfile function to append to a file Mark the list of refs to fetch as const Conflicts: cache.h t/
2008-05-06Merge branch 'lh/git-file'Junio C Hamano
* lh/git-file: Teach GIT-VERSION-GEN about the .git file Teach about the .git file Teach resolve_gitlink_ref() about the .git file Add platform-independent .git "symlink"
2008-05-05Allow for having for_each_ref() list extra refsDaniel Barkalow
These refs can be anything, but they are most likely useful as pointing to objects that you know are in the object database but don't have any regular refs for. For example, when cloning with --reference, the refs in this repository should be listed as objects that we have, even though we don't have refs in our newly-created repository for them yet. Signed-off-by: Daniel Barkalow <> Signed-off-by: Junio C Hamano <>
2008-04-30Make read_in_full() and write_in_full() consistent with xread() and xwrite()Heikki Orsila
xread() and xwrite() return ssize_t values as their native POSIX counterparts read(2) and write(2). To be consistent, read_in_full() and write_in_full() should also return ssize_t values. Signed-off-by: Junio C Hamano <>
2008-04-09Teach resolve_gitlink_ref() about the .git fileLars Hjemli
When .git in a submodule is a file, resolve_gitlink_ref() needs to pick up the real GIT_DIR of the submodule from that file. Signed-off-by: Lars Hjemli <> Signed-off-by: Junio C Hamano <>
2008-03-03Merge commit '74359821' into js/reflog-deleteJunio C Hamano
* commit '74359821': (128 commits) tests: introduce test_must_fail Fix builtin checkout crashing when given an invalid path templates/Makefile: don't depend on local umask setting Correct name of diff_flush() in API documentation Start preparing for format-patch: remove a leftover debugging message completion: support format-patch's --cover-letter option Eliminate confusing "won't bisect on seeked tree" failure builtin-reflog.c: don't install new reflog on write failure send-email: fix In-Reply-To regression git-svn: Don't prompt for client cert password everytime. git.el: Do not display empty directories. Fix 'git cvsexportcommit -w $cvsdir ...' when used with relative $GIT_DIR Add testcase for 'git cvsexportcommit -w $cvsdir ...' with relative $GIT_DIR Prompt to continue when editing during rebase --interactive Documentation/git svn log: add a note about timezones. git-p4: Support usage of perforce client spec git-p4: git-p4 submit cleanups. git-p4: Removed git-p4 submit --direct. git-p4: Clean up git-p4 submit's log message handling. ...
2008-02-24Optimize peel_ref for the current ref of a for_each_ref callbackShawn O. Pearce
Currently the only caller of peel_ref is show-ref, which is using this function to show the peeled tag information if it is available from an existing packed-refs file. The call happens during the for_each_ref callback function, so we have the proper struct ref_list already on the call stack but it is not easily available to return the peeled information to the caller. We now save the current struct ref_list item before calling back into the callback function so that future calls to peel_ref from within the callback function can quickly access the current ref. Doing so will save us an lstat() per ref processed as we no longer have to check the filesystem to see if the ref exists as a loose file or is packed. This current ref caching also saves a linear scan of the cached packed refs list. As a micro-optimization we test the address of the passed ref name against the current_ref->name before we go into the much more costly strcmp(). Nearly any caller of peel_ref will be passing us the same string do_for_each_ref passed them, which is current_ref->name. Signed-off-by: Shawn O. Pearce <> Signed-off-by: Junio C Hamano <>
2008-02-24Protect peel_ref fallback case from NULL parse_object resultShawn O. Pearce
If the SHA-1 we are requesting the object for does not exist in the object database we get a NULL back. Accessing the type from that is not likely to succeed on any system. Signed-off-by: Shawn O. Pearce <> Signed-off-by: Junio C Hamano <>
2008-02-23refs.c: make close_ref() and commit_ref() non-staticBrandon Casey
This is in preparation to the reflog-expire changes which will allow updating the ref after expiring the reflog. Signed-off-by: Brandon Casey <> Signed-off-by: Junio C Hamano <>
2008-01-16refs.c: rework ref_locks by abstracting from underlying struct lock_fileBrandon Casey
Instead of calling close_lock_file() and commit_lock_file() directly, which take a struct lock_file argument, add two new functions: close_ref() and commit_ref(), which handle calling the previous lock_file functions and modifying the ref_lock structure. Signed-off-by: Junio C Hamano <>
2008-01-16Improve use of lockfile APIBrandon Casey
Remove remaining double close(2)'s. i.e. close() before commit_locked_index() or commit_lock_file(). Signed-off-by: Junio C Hamano <>
2008-01-16Be more careful about updating refsLinus Torvalds
This makes write_ref_sha1() more careful: it actually checks the SHA1 of the ref it is updating, and refuses to update a ref with an object that it cannot find. Perhaps more importantly, it also refuses to update a branch head with a non-commit object. I don't quite know *how* the stable series maintainers were able to corrupt their repository to have a HEAD that pointed to a tag rather than a commit object, but they did. Which results in a totally broken repository that cannot be cloned or committed on. So make it harder for people to shoot themselves in the foot like that. The test is fixed at the same time, as it assumed that the commands involved in the particular test would not care about corrupted repositories whose refs point at nonexistant bogus objects. That assumption does not hold true anymore. Signed-off-by: Linus Torvalds <> Signed-off-by: Junio C Hamano <>
2008-01-02Update callers of check_ref_format()Junio C Hamano
This updates send-pack and fast-import to use symbolic constants for checking the return values from check_ref_format(), and also futureproof the logic in lock_any_ref_for_update() to explicitly name the case that is usually considered an error but is Ok for this particular use. Signed-off-by: Junio C Hamano <>
2008-01-02lock_any_ref_for_update(): reject wildcard return from check_ref_formatJunio C Hamano
Recent check_ref_format() returns -3 as well as -1 (general error) and -2 (less than two levels). The caller was explicitly checking for -1, to allow "HEAD" but still needed to disallow bogus refs. This introduces symbolic constants for the return values from check_ref_format() to make them read better and more meaningful. Normal ref creation codepath can still treat non-zero return values as errors. Signed-off-by: Junio C Hamano <>
2007-12-09Re-fix "builtin-commit: fix --signoff"Junio C Hamano
An earlier fix to the said commit was incomplete; it mixed up the meaning of the flag parameter passed to the internal fmt_ident() function, so this corrects it. git_author_info() and git_committer_info() can be told to issue a warning when no usable user information is found, and optionally can be told to error out. Operations that actually use the information to record a new commit or a tag will still error out, but the caller to leave reflog record will just silently use bogus user information. Not warning on misconfigured user information while writing a reflog entry is somewhat debatable, but it is probably nicer to the users to silently let it pass, because the only information you are losing is who checked out the branch. * git_author_info() and git_committer_info() used to take 1 (positive int) to error out with a warning on misconfiguration; this is now signalled with a symbolic constant IDENT_ERROR_ON_NO_NAME. * These functions used to take -1 (negative int) to warn but continue; this is now signalled with a symbolic constant IDENT_WARN_ON_NO_NAME. * fmt_ident() function implements the above error reporting behaviour common to git_author_info() and git_committer_info(). A symbolic constant IDENT_NO_DATE can be or'ed in to the flag parameter to make it return only the "Name <email@address.xz>". * fmt_name() is a thin wrapper around fmt_ident() that always passes IDENT_ERROR_ON_NO_NAME and IDENT_NO_DATE. Signed-off-by: Junio C Hamano <>
2007-12-05Merge branch 'sp/refspec-match'Junio C Hamano
* sp/refspec-match: refactor fetch's ref matching to use refname_match() push: use same rules as git-rev-parse to resolve refspecs add refname_match() push: support pushing HEAD to real branch name
2007-11-25Merge branch 'jk/send-pack'Junio C Hamano
* jk/send-pack: (24 commits) send-pack: cluster ref status reporting send-pack: fix "everything up-to-date" message send-pack: tighten remote error reporting make "find_ref_by_name" a public function Fix warning about bitfield in struct ref send-pack: assign remote errors to each ref send-pack: check ref->status before updating tracking refs send-pack: track errors for each ref git-push: add documentation for the newly added --mirror mode Add tests for git push'es mirror mode Update the tracking references only if they were succesfully updated on remote Add a test checking if send-pack updated local tracking branches correctly git-push: plumb in --mirror mode Teach send-pack a mirror mode send-pack: segfault fix on forced push Reteach builtin-ls-remote to understand remotes send-pack: require --verbose to show update of tracking refs receive-pack: don't mention successful updates more terse push output Build in ls-remote ...
2007-11-19refactor fetch's ref matching to use refname_match()Steffen Prohaska
The old rules used by fetch were coded as a series of ifs. The old rules are: 1) match full refname if it starts with "refs/" or matches "HEAD" 2) verify that full refname starts with "refs/" 3) match abbreviated name in "refs/" if it starts with "heads/", "tags/", or "remotes/". 4) match abbreviated name in "refs/heads/" This is replaced by the new rules a) match full refname b) match abbreviated name prefixed with "refs/" c) match abbreviated name prefixed with "refs/heads/" The details of the new rules are different from the old rules. We no longer verify that the full refname starts with "refs/". The new rule (a) matches any full string. The old rules (1) and (2) were stricter. Now, the caller is responsible for using sensible full refnames. This should be the case for the current code. The new rule (b) is less strict than old rule (3). The new rule accepts abbreviated names that start with a non-standard prefix below "refs/". Despite this modifications the new rules should handle all cases as expected. Two tests are added to verify that fetch does not resolve short tags or HEAD in remotes. We may even think about loosening the rules a bit more and unify them with the rev-parse rules. This would be done by replacing ref_ref_fetch_rules with ref_ref_parse_rules. Note, the two new test would break. Signed-off-by: Steffen Prohaska <> Signed-off-by: Junio C Hamano <>
2007-11-19add refname_match()Steffen Prohaska
We use at least two rulesets for matching abbreviated refnames with full refnames (starting with 'refs/'). git-rev-parse and git-fetch use slightly different rules. This commit introduces a new function refname_match (const char *abbrev_name, const char *full_name, const char **rules). abbrev_name is expanded using the rules and matched against full_name. If a match is found the function returns true. rules is a NULL-terminate list of format patterns with "%.*s", for example: const char *ref_rev_parse_rules[] = { "%.*s", "refs/%.*s", "refs/tags/%.*s", "refs/heads/%.*s", "refs/remotes/%.*s", "refs/remotes/%.*s/HEAD", NULL }; Asterisks are included in the format strings because this is the form required in sha1_name.c. Sharing the list with the functions there is a good idea to avoid duplicating the rules. Hopefully this facilitates unified matching rules in the future. This commit makes the rules used by rev-parse for resolving refs to sha1s available for string comparison. Before this change, the rules were buried in get_sha1*() and dwim_ref(). A follow-up commit will refactor the rules used by fetch. refname_match() will be used for matching refspecs in git-send-pack. Thanks to Daniel Barkalow <> for pointing out that ref_matches_abbrev in remote.c solves a similar problem and care should be taken to avoid confusion. Signed-off-by: Steffen Prohaska <> Signed-off-by: Junio C Hamano <>
2007-11-18make "find_ref_by_name" a public functionJeff King
This was a static in remote.c, but is generally useful. Signed-off-by: Jeff King <> Signed-off-by: Junio C Hamano <>
2007-11-16refs.c: Remove unused get_ref_sha1()Johannes Sixt
Signed-off-by: Johannes Sixt <> Signed-off-by: Junio C Hamano <>
2007-10-16Merge branch 'master' into db/fetch-packShawn O. Pearce
There's a number of tricky conflicts between master and this topic right now due to the rewrite of builtin-push. Junio must have handled these via rerere; I'd rather not deal with them again so I'm pre-merging master into the topic. Besides this topic somehow started to depend on the strbuf series that was in next, but is now in master. It no longer compiles on its own without the strbuf API. * master: (184 commits) Whip post maintenance series into shape. Minor usage update in setgitperms.perl manual: use 'URL' instead of 'url'. manual: add some markup. manual: Fix example finding commits referencing given content. Fix wording in push definition. Fix some typos, punctuation, missing words, minor markup. manual: Fix or remove em dashes. Add a --dry-run option to git-push. Add a --dry-run option to git-send-pack. Fix in-place editing functions in convert.c instaweb: support for Ruby's WEBrick server instaweb: allow for use of auto-generated scripts Add 'git-p4 commit' as an alias for 'git-p4 submit' hg-to-git speedup through selectable repack intervals git-svn: respect Subversion's [auth] section configuration values gtksourceview2 support for gitview fix contrib/hooks/post-receive-email hooks.recipients error message Support cvs via git-shell rebase -i: use diff plumbing instead of porcelain ... Conflicts: Makefile builtin-push.c rsh.c
2007-09-30Introduce remove_dir_recursively()Johannes Schindelin
There was a function called remove_empty_dir_recursive() buried in refs.c. Expose a slightly enhanced version in dir.h: it can now optionally remove a non-empty directory. Signed-off-by: Johannes Schindelin <> Signed-off-by: Junio C Hamano <>