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2023-08-31tree-walk: drop MAX_TRAVERSE_TREES macroJeff King
Since the previous commit dropped the hard-coded limit in traverse_trees(), we don't need this macro there anymore (the code can handle any number of trees in parallel). We do define MAX_UNPACK_TREES using MAX_TRAVERSE_TREES, due to 5290d45134 (tree-walk.c: break circular dependency with unpack-trees, 2020-02-01). So we can just directly define that as "8" now; we know traverse_trees() can handle whatever we throw at it. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-06-21read-cache*.h: move declarations for read-cache.c functions from cache.hElijah Newren
For the functions defined in read-cache.c, move their declarations from cache.h to a new header, read-cache-ll.h. Also move some related inline functions from cache.h to read-cache.h. The purpose of the read-cache-ll.h/read-cache.h split is that about 70% of the sites don't need the inline functions and the extra headers they include. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-04-11treewide: be explicit about dependence on convert.hElijah Newren
Signed-off-by: Elijah Newren <newren@gmail.com> Acked-by: Calvin Wan <calvinwan@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-02-27unpack-trees: add usage notices around df_conflict_entryElijah Newren
Avoid making users believe they need to initialize df_conflict_entry to something (as happened with other output only fields before) with a quick comment and a small sanity check. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-02-27unpack-trees: special case read-tree debugging as internal usageElijah Newren
builtin/read-tree.c has some special functionality explicitly designed for debugging unpack-trees.[ch]. Associated with that is two fields that no other external caller would or should use. Mark these as internal to unpack-trees, but allow builtin/read-tree to read or write them for this special case. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-02-27unpack-trees: mark fields only used internally as internalElijah Newren
Continue the work from the previous patch by finding additional fields which are only used internally but not yet explicitly marked as such, and include them in the internal fields struct. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-02-27unpack_trees: start splitting internal fields from public APIElijah Newren
This just splits the two fields already marked as internal-only into a separate internal struct. Future commits will add more fields that were meant to be internal-only but were not explicitly marked as such to the same struct. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-02-27sparse-checkout: avoid using internal API of unpack-treesElijah Newren
struct unpack_trees_options has the following field and comment: struct pattern_list *pl; /* for internal use */ Despite the internal-use comment, commit e091228e17 ("sparse-checkout: update working directory in-process", 2019-11-21) starting setting this field from an external caller. At the time, the only way around that would have been to modify unpack_trees() to take an extra pattern_list argument, and there's a lot of callers of that function. However, when we split update_sparsity() off as a separate function, with sparse-checkout being the sole caller, the need to update other callers went away. Fix this API problem by adding a pattern_list argument to update_sparsity() and stop setting the internal o.pl field directly. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-12-26read-tree: add "--super-prefix" option, eliminate globalÆvar Arnfjörð Bjarmason
The "--super-prefix" option to "git" was initially added in [1] for use with "ls-files"[2], and shortly thereafter "submodule--helper"[3] and "grep"[4]. It wasn't until [5] that "read-tree" made use of it. At the time [5] made sense, but since then we've made "ls-files" recurse in-process in [6], "grep" in [7], and finally "submodule--helper" in the preceding commits. Let's also remove it from "read-tree", which allows us to remove the option to "git" itself. We can do this because the only remaining user of it is the submodule API, which will now invoke "read-tree" with its new "--super-prefix" option. It will only do so when the "submodule_move_head()" function is called. That "submodule_move_head()" function was then only invoked by "read-tree" itself, but now rather than setting an environment variable to pass "--super-prefix" between cmd_read_tree() we: - Set a new "super_prefix" in "struct unpack_trees_options". The "super_prefixed()" function in "unpack-trees.c" added in [5] will now use this, rather than get_super_prefix() looking up the environment variable we set earlier in the same process. - Add the same field to the "struct checkout", which is only needed to ferry the "super_prefix" in the "struct unpack_trees_options" all the way down to the "entry.c" callers of "submodule_move_head()". Those calls which used the super prefix all originated in "cmd_read_tree()". The only other caller is the "unlink_entry()" caller in "builtin/checkout.c", which now passes a "NULL". 1. 74866d75793 (git: make super-prefix option, 2016-10-07) 2. e77aa336f11 (ls-files: optionally recurse into submodules, 2016-10-07) 3. 89c86265576 (submodule helper: support super prefix, 2016-12-08) 4. 0281e487fd9 (grep: optionally recurse into submodules, 2016-12-16) 5. 3d415425c7b (unpack-trees: support super-prefix option, 2017-01-17) 6. 188dce131fa (ls-files: use repository object, 2017-06-22) 7. f9ee2fcdfa0 (grep: recurse in-process using 'struct repository', 2017-08-02) Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-11-11unpack-trees: add 'skip_cache_tree_update' optionVictoria Dye
Add (disabled by default) option to skip the 'cache_tree_update()' at the end of 'unpack_trees()'. In many cases, this cache tree update is redundant because the caller of 'unpack_trees()' immediately follows it with 'prime_cache_tree()', rebuilding the entire cache tree from scratch. While these operations aren't the most expensive part of operations like 'git reset', the duplicate calls still create a minor unnecessary slowdown. Introduce an option for callers to skip the 'cache_tree_update()' in 'unpack_trees()' if it is redundant (that is, if 'prime_cache_tree()' is called afterwards). At the moment, no 'unpack_trees()' callers use the new option; they will be updated in subsequent patches. Signed-off-by: Victoria Dye <vdye@github.com> Signed-off-by: Taylor Blau <me@ttaylorr.com>
2021-12-09unpack-trees: refuse to remove startup_info->original_cwdElijah Newren
In the past, when a directory needs to be removed to make room for a file, we have always errored out when that directory contains any untracked (but not ignored) files. Add an extra condition on that: also error out if the directory is the current working directory we inherited from our parent process. Acked-by: Derrick Stolee <stolee@gmail.com> Acked-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-27Change unpack_trees' 'reset' flag into an enumElijah Newren
Traditionally, unpack_trees_options->reset was used to signal that it was okay to delete any untracked files in the way. This was used by `git read-tree --reset`, but then started appearing in other places as well. However, many of the other uses should not be deleting untracked files in the way. Change this value to an enum so that a value of 1 (i.e. "true") can be split into two: UNPACK_RESET_PROTECT_UNTRACKED, UNPACK_RESET_OVERWRITE_UNTRACKED In order to catch accidental misuses (i.e. where folks call it the way they traditionally used to), define the special enum value of UNPACK_RESET_INVALID = 1 which will trigger a BUG(). Modify existing callers so that read-tree --reset reset --hard checkout --force continue using the UNPACK_RESET_OVERWRITE_UNTRACKED logic, while other callers, including am checkout without --force stash (though currently dead code; reset always had a value of 0) numerous callers from rebase/sequencer to reset_head() will use the new UNPACK_RESET_PROTECT_UNTRACKED value. Also, note that it has been reported that 'git checkout <treeish> <pathspec>' currently also allows overwriting untracked files[1]. That case should also be fixed, but it does not use unpack_trees() and thus is outside the scope of the current changes. [1] https://lore.kernel.org/git/15dad590-087e-5a48-9238-5d2826950506@gmail.com/ Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-27unpack-trees: make dir an internal-only structElijah Newren
Avoid accidental misuse or confusion over ownership by clearly making unpack_trees_options.dir an internal-only variable. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-27unpack-trees: introduce preserve_ignored to unpack_trees_optionsElijah Newren
Currently, every caller of unpack_trees() that wants to ensure ignored files are overwritten by default needs to: * allocate unpack_trees_options.dir * flip the DIR_SHOW_IGNORED flag in unpack_trees_options.dir->flags * call setup_standard_excludes AND then after the call to unpack_trees() needs to * call dir_clear() * deallocate unpack_trees_options.dir That's a fair amount of boilerplate, and every caller uses identical code. Make this easier by instead introducing a new boolean value where the default value (0) does what we want so that new callers of unpack_trees() automatically get the appropriate behavior. And move all the handling of unpack_trees_options.dir into unpack_trees() itself. While preserve_ignored = 0 is the behavior we feel is the appropriate default, we defer fixing commands to use the appropriate default until a later commit. So, this commit introduces several locations where we manually set preserve_ignored=1. This makes it clear where code paths were previously preserving ignored files when they should not have been; a future commit will flip these to instead use a value of 0 to get the behavior we want. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-03-05stash show: teach --include-untracked and --only-untrackedDenton Liu
Stash entries can be made with untracked files via `git stash push --include-untracked`. However, because the untracked files are stored in the third parent of the stash entry and not the stash entry itself, running `git stash show` does not include the untracked files as part of the diff. With --include-untracked, untracked paths, which are recorded in the third-parent if it exists, are shown in addition to the paths that have modifications between the stash base and the working tree in the stash. It is possible to manually craft a malformed stash entry where duplicate untracked files in the stash entry will mask tracked files. We detect and error out in that case via a custom unpack_trees() callback: stash_worktree_untracked_merge(). Also, teach stash the --only-untracked option which only shows the untracked files of a stash entry. This is similar to `git show stash^3` but it is nice to provide a convenient abstraction for it so that users do not have to think about the underlying implementation. Signed-off-by: Denton Liu <liu.denton@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-07-28strvec: convert remaining callers away from argv_array nameJeff King
We eventually want to drop the argv_array name and just use strvec consistently. There's no particular reason we have to do it all at once, or care about interactions between converted and unconverted bits. Because of our preprocessor compat layer, the names are interchangeable to the compiler (so even a definition and declaration using different names is OK). This patch converts all of the remaining files, as the resulting diff is reasonably sized. The conversion was done purely mechanically with: git ls-files '*.c' '*.h' | xargs perl -i -pe ' s/ARGV_ARRAY/STRVEC/g; s/argv_array/strvec/g; ' We'll deal with any indentation/style fallouts separately. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-07-28strvec: rename files from argv-array to strvecJeff King
This requires updating #include lines across the code-base, but that's all fairly mechanical, and was done with: git ls-files '*.c' '*.h' | xargs perl -i -pe 's/argv-array.h/strvec.h/' Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-04-29Merge branch 'en/sparse-checkout'Junio C Hamano
"sparse-checkout" UI improvements. * en/sparse-checkout: sparse-checkout: provide a new reapply subcommand unpack-trees: failure to set SKIP_WORKTREE bits always just a warning unpack-trees: provide warnings on sparse updates for unmerged paths too unpack-trees: make sparse path messages sound like warnings unpack-trees: split display_error_msgs() into two unpack-trees: rename ERROR_* fields meant for warnings to WARNING_* unpack-trees: move ERROR_WOULD_LOSE_SUBMODULE earlier sparse-checkout: use improved unpack_trees porcelain messages sparse-checkout: use new update_sparsity() function unpack-trees: add a new update_sparsity() function unpack-trees: pull sparse-checkout pattern reading into a new function unpack-trees: do not mark a dirty path with SKIP_WORKTREE unpack-trees: allow check_updates() to work on a different index t1091: make some tests a little more defensive against failures unpack-trees: simplify pattern_list freeing unpack-trees: simplify verify_absent_sparse() unpack-trees: remove unused error type unpack-trees: fix minor typo in comment
2020-03-27unpack-trees: provide warnings on sparse updates for unmerged paths tooElijah Newren
When sparse-checkout runs to update the list of sparsity patterns, it gives warnings if it can't remove paths from the working tree because those files have dirty changes. Add a similar warning for unmerged paths as well. Reviewed-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-27unpack-trees: split display_error_msgs() into twoElijah Newren
display_error_msgs() is never called to show messages of both ERROR_* and WARNING_* types at the same time; it is instead called multiple times, separately for each type. Since we want to display these types differently, make two slightly different versions of this function. A subsequent commit will further modify unpack_trees() and how it calls the new display_warning_msgs(). Reviewed-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-27unpack-trees: rename ERROR_* fields meant for warnings to WARNING_*Elijah Newren
We want to treat issues with setting the SKIP_WORKTREE bit as a warning rather than an error; rename the enum values to reflect this intent as a simple step towards that goal. Reviewed-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-27unpack-trees: move ERROR_WOULD_LOSE_SUBMODULE earlierElijah Newren
A minor change, but we want to convert the sparse messages to warnings and this allows us to group warnings and errors. Reviewed-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-27unpack-trees: add a new update_sparsity() functionElijah Newren
Previously, the only way to update the SKIP_WORKTREE bits for various paths was invoking `git read-tree -mu HEAD` or calling the same code that this codepath invoked. This however had a number of problems if the index or working directory were not clean. First, let's consider the case: Flipping SKIP_WORKTREE -> !SKIP_WORKTREE (materializing files) If the working tree was clean this was fine, but if there were files or directories or symlinks or whatever already present at the given path then the operation would abort with an error. Let's label this case for later discussion: A) There is an untracked path in the way Now let's consider the opposite case: Flipping !SKIP_WORKTREE -> SKIP_WORKTREE (removing files) If the index and working tree was clean this was fine, but if there were any unclean paths we would run into problems. There are three different cases to consider: B) The path is unmerged C) The path has unstaged changes D) The path has staged changes (differs from HEAD) If any path fell into case B or C, then the whole operation would be aborted with an error. With sparse-checkout, the whole operation would be aborted for case D as well, but for its predecessor of using `git read-tree -mu HEAD` directly, any paths that fell into case D would be removed from the working copy and the index entry for that path would be reset to match HEAD -- which looks and feels like data loss to users (only a few are even aware to ask whether it can be recovered, and even then it requires walking through loose objects trying to match up the right ones). Refusing to remove files that have unsaved user changes is good, but refusing to work on any other paths is very problematic for users. If the user is in the middle of a rebase or has made modifications to files that bring in more dependencies, then for their build to work they need to update the sparse paths. This logic has been preventing them from doing so. Sometimes in response, the user will stage the files and re-try, to no avail with sparse-checkout or to the horror of losing their changes if they are using its predecessor of `git read-tree -mu HEAD`. Add a new update_sparsity() function which will not error out in any of these cases but behaves as follows for the special cases: A) Leave the file in the working copy alone, clear the SKIP_WORKTREE bit, and print a warning (thus leaving the path in a state where status will report the file as modified, which seems logical). B) Do NOT mark this path as SKIP_WORKTREE, and leave it as unmerged. C) Do NOT mark this path as SKIP_WORKTREE and print a warning about the dirty path. D) Mark the path as SKIP_WORKTREE, but do not revert the version stored in the index to match HEAD; leave the contents alone. I tried a different behavior for A (leave the SKIP_WORKTREE bit set), but found it very surprising and counter-intuitive (e.g. the user sees it is present along with all the other files in that directory, tries to stage it, but git add ignores it since the SKIP_WORKTREE bit is set). A & C seem like optimal behavior to me. B may be as well, though I wonder if printing a warning would be an improvement. Some might be slightly surprised by D at first, but given that it does the right thing with `git commit` and even `git commit -a` (`git add` ignores entries that are marked SKIP_WORKTREE and thus doesn't delete them, and `commit -a` is similar), it seems logical to me. Reviewed-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-27unpack-trees: simplify pattern_list freeingElijah Newren
commit e091228e17 ("sparse-checkout: update working directory in-process", 2019-11-21) allowed passing a pre-defined set of patterns to unpack_trees(). However, if o->pl was NULL, it would still read the existing patterns and use those. If those patterns were read into a data structure that was allocated, naturally they needed to be free'd. However, despite the same function being responsible for knowing about both the allocation and the free'ing, the logic for tracking whether to free the pattern_list was hoisted to an outer function with an additional flag in unpack_trees_options. Put the logic back in the relevant function and discard the now unnecessary flag. Reviewed-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-27unpack-trees: remove unused error typeElijah Newren
commit 08402b0409 ("merge-recursive: distinguish "removed" and "overwritten" messages", 2010-08-11) split ERROR_WOULD_LOSE_UNTRACKED into both ERROR_WOULD_LOSE_UNTRACKED_OVERWRITTEN ERROR_WOULD_LOSE_UNTRACKED_REMOVED and also split ERROR_WOULD_LOSE_ORPHANED into both ERROR_WOULD_LOSE_ORPHANED_OVERWRITTEN ERROR_WOULD_LOSE_ORPHANED_REMOVED However, despite the split only three of these four types were used. ERROR_WOULD_LOSE_ORPHANED_REMOVED was not put into use when it was introduced and nothing else has used it in the intervening decade either. Remove it. Reviewed-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-16builtin/checkout: compute checkout metadata for checkoutsbrian m. carlson
Provide commit metadata for checkout code paths that use unpack_trees and friends. When we're checking out a commit, use the commit information, but don't provide commit information if we're checking out from the index, since there need not be any particular commit associated with the index, and even if there is one, we can't know what it is. Signed-off-by: brian m. carlson <bk2204@github.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-04tree-walk.c: break circular dependency with unpack-treesJeff King
The unpack-trees API depends on the tree-walk API. But we've recently introduced a dependency in tree-walk.c on MAX_UNPACK_TREES, which doesn't otherwise care about unpack-trees at all. Let's break that dependency by reversing the constants: we'll introduce a new MAX_TRAVERSE_TREES which belongs to the tree-walk API. And then we can define MAX_UNPACK_TREES in terms of that (since unpack-trees cannot possibly work with more trees than it can traverse at once via tree-walk). The value for both will remain at 8. This is somewhat arbitrary and probably more than is necessary, per ca885a4fe6 (read-tree() and unpack_trees(): use consistent limit, 2008-03-13), but there's not really any pressing need to reduce it. Suggested-by: Elijah Newren <newren@gmail.com> Signed-off-by: Jeff King <peff@peff.net> Acked-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-22sparse-checkout: update working directory in-processDerrick Stolee
The sparse-checkout builtin used 'git read-tree -mu HEAD' to update the skip-worktree bits in the index and to update the working directory. This extra process is overly complex, and prone to failure. It also requires that we write our changes to the sparse-checkout file before trying to update the index. Remove this extra process call by creating a direct call to unpack_trees() in the same way 'git read-tree -mu HEAD' does. In addition, provide an in-memory list of patterns so we can avoid reading from the sparse-checkout file. This allows us to test a proposed change to the file before writing to it. An earlier version of this patch included a bug when the 'set' command failed due to the "Sparse checkout leaves no entry on working directory" error. It would not rollback the index.lock file, so the replay of the old sparse-checkout specification would fail. A test in t1091 now covers that scenario. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-05treewide: rename 'struct exclude_list' to 'struct pattern_list'Derrick Stolee
The first consumer of pattern-matching filenames was the .gitignore feature. In that context, storing a list of patterns as a 'struct exclude_list' makes sense. However, the sparse-checkout feature then adopted these structures and methods, but with the opposite meaning: these patterns match the files that should be included! It would be clearer to rename this entire library as a "pattern matching" library, and the callers apply exclusion/inclusion logic accordingly based on their needs. This commit renames 'struct exclude_list' to 'struct pattern_list' and renames several variables called 'el' to 'pl'. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-24unpack-trees: rename "gently" flag to "quiet"Nguyễn Thái Ngọc Duy
The gently flag was added in 17e4642667 (Add flag to make unpack_trees() not print errors. - 2008-02-07) to suppress error messages. The name "gently" does not quite express that. Granted, being quiet is gentle but it could mean not performing some other actions. Rename the flag to "quiet" to be more on point. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-17Merge branch 'nd/clone-case-smashing-warning'Junio C Hamano
Running "git clone" against a project that contain two files with pathnames that differ only in cases on a case insensitive filesystem would result in one of the files lost because the underlying filesystem is incapable of holding both at the same time. An attempt is made to detect such a case and warn. * nd/clone-case-smashing-warning: clone: report duplicate entries on case-insensitive filesystems
2018-08-20Merge branch 'en/incl-forward-decl'Junio C Hamano
Code hygiene improvement for the header files. * en/incl-forward-decl: Remove forward declaration of an enum compat/precompose_utf8.h: use more common include guard style urlmatch.h: fix include guard Move definition of enum branch_track from cache.h to branch.h alloc: make allocate_alloc_state and clear_alloc_state more consistent Add missing includes and forward declarations
2018-08-17clone: report duplicate entries on case-insensitive filesystemsDuy Nguyen
Paths that only differ in case work fine in a case-sensitive filesystems, but if those repos are cloned in a case-insensitive one, you'll get problems. The first thing to notice is "git status" will never be clean with no indication what exactly is "dirty". This patch helps the situation a bit by pointing out the problem at clone time. Even though this patch talks about case sensitivity, the patch makes no assumption about folding rules by the filesystem. It simply observes that if an entry has been already checked out at clone time when we're about to write a new path, some folding rules are behind this. In the case that we can't rely on filesystem (via inode number) to do this check, fall back to fspathcmp() which is not perfect but should not give false positives. This patch is tested with vim-colorschemes and Sublime-Gitignore repositories on a JFS partition with case insensitive support on Linux. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-15Add missing includes and forward declarationsElijah Newren
I looped over the toplevel header files, creating a temporary two-line C program for each consisting of #include "git-compat-util.h" #include $HEADER This patch is the result of manually fixing errors in compiling those tiny programs. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-13unpack-trees: remove 'extern' on function declarationNguyễn Thái Ngọc Duy
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-05-22unpack_trees_options: free messages when doneMartin Ågren
The strings allocated in `setup_unpack_trees_porcelain()` are never freed. Provide a function `clear_unpack_trees_porcelain()` to do so and call it where we use `setup_unpack_trees_porcelain()`. The only non-trivial user is `unpack_trees_start()`, where we should place the new call in `unpack_trees_finish()`. We keep the string pointers in an array, mixing pointers to static memory and memory that we allocate on the heap. We also keep several copies of the individual pointers. So we need to make sure that we do not free what we must not free and that we do not double-free. Let a separate argv_array take ownership of all the strings we create so that we can easily free them. Zero the whole array of string pointers to make sure that we do not leave any dangling pointers. Note that we only take responsibility for the memory allocated in `setup_unpack_trees_porcelain()` and not any other members of the `struct unpack_trees_options`. Helped-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Martin Ågren <martin.agren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-05-08merge-recursive: fix overwriting dirty files involved in renamesElijah Newren
This fixes an issue that existed before my directory rename detection patches that affects both normal renames and renames implied by directory rename detection. Additional codepaths that only affect overwriting of dirty files that are involved in directory rename detection will be added in a subsequent commit. Reviewed-by: Stefan Beller <sbeller@google.com> Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-04-11Revert "Merge branch 'en/rename-directory-detection'"Junio C Hamano
This reverts commit e4bb62fa1eeee689744b413e29a50b4d1dae6886, reversing changes made to 468165c1d8a442994a825f3684528361727cd8c0. The topic appears to inflict severe regression in renaming merges, even though the promise of it was that it would improve them. We do not yet know which exact change in the topic was wrong, but in the meantime, let's play it safe and revert it out of 'master' before real Git-using projects are harmed. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-02-27merge-recursive: fix overwriting dirty files involved in renamesElijah Newren
This fixes an issue that existed before my directory rename detection patches that affects both normal renames and renames implied by directory rename detection. Additional codepaths that only affect overwriting of dirty files that are involved in directory rename detection will be added in a subsequent commit. Reviewed-by: Stefan Beller <sbeller@google.com> Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-16unpack-trees: check if we can perform the operation for submodulesStefan Beller
In a later patch we'll support submodule entries to be in sync with the tree in working tree changing commands, such as checkout or read-tree. When a new submodule entry changes in the tree, we need to check if there are conflicts (directory/file conflicts) for the tree. Add this check for submodules to be performed before the working tree is touched. Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-06-02diff-lib, read-tree, unpack-trees: mark cache_entry array paramters constRené Scharfe
Change the type merge_fn_t to accept the array of cache_entry pointers as const pointers to const pointers. This documents the fact that the merge functions don't modify the cache_entry contents or replace any of the pointers in the array. Only a single cast is necessary in unpack_nondirectories because adding two const modifiers at once is not allowed in C. The cast is safe in that it doesn't mask any modfication; call_unpack_fn only needs the array for reading. Signed-off-by: René Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-04-15dir.c: replace is_path_excluded with now equivalent is_excluded APIKarsten Blees
Signed-off-by: Karsten Blees <blees@dcon.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-06-06unpack-trees.c: use path_excluded() in check_ok_to_remove()Junio C Hamano
This function is responsible for determining if a path that is not tracked is ignored and allow "checkout" to overwrite it as needed. It used excluded() without checking if higher level directory in the path is ignored; correct it to use path_excluded() for this check. Signed-off-by: Junio C Hamano <gitster@pobox.com> --- * There are uses of lower-level interface excluded_from_list() in the codepath for narrow-checkout hack; they are supposed to be already checking each level as they descend, and are not touched with this patch.
2011-10-05Merge branch 'jc/diff-index-unpack'Junio C Hamano
* jc/diff-index-unpack: diff-index: pass pathspec down to unpack-trees machinery unpack-trees: allow pruning with pathspec traverse_trees(): allow pruning with pathspec
2011-08-29unpack-trees: allow pruning with pathspecJunio C Hamano
Use the pathspec pruning of traverse_trees() from unpack_trees(). Again, the unpack_trees() machinery is primarily meant for merging two (or more) trees, and because a merge is a full tree operation, it didn't support any pruning with pathspec, and this codepath probably should not be enabled while running a merge, but the caller in diff-lib.c::diff_cache() should be able to take advantage of it. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-06-30Merge branch 'jc/diff-index-quick-exit-early'Junio C Hamano
* jc/diff-index-quick-exit-early: diff-index --quiet: learn the "stop feeding the backend early" logic Conflicts: unpack-trees.h
2011-05-31diff-index --quiet: learn the "stop feeding the backend early" logicJunio C Hamano
A negative return from the unpack callback function usually means unpack failed for the entry and signals the unpack_trees() machinery to fail the entire merge operation, immediately and there is no other way for the callback to tell the machinery to exit early without reporting an error. This is what we usually want to make a merge all-or-nothing operation, but the machinery is also used for diff-index codepath by using a custom unpack callback function. And we do sometimes want to exit early without failing, namely when we are under --quiet and can short-cut the diff upon finding the first difference. Add "exiting_early" field to unpack_trees_options structure, to signal the unpack_trees() machinery that the negative return value is not signaling an error but an early return from the unpack_trees() machinery. As this by definition hasn't unpacked everything, discard the resulting index just like the failure codepath. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-05-25unpack-trees: add the dry_run flag to unpack_trees_optionsJens Lehmann
Until now there was no way to test if unpack_trees() with update=1 would succeed without really updating the work tree. The reason for that is that setting update to 0 does skip the tests for new files and deactivates the sparse handling, thereby making that unsuitable as a dry run. Add the new dry_run flag to struct unpack_trees_options unpack_trees(). Setting that together with the update flag will check if the work tree update would be successful without doing it for real. The only class of problems that is not detected at the moment are file system conditions like ENOSPC or missing permissions. Also the index entries of updated files are not as they would be after a real checkout because lstat() isn't run as the files aren't updated for real. Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-11-15use persistent memory for rejected pathsClemens Buchacher
An aborted merge prints the list of rejected paths as part of the error message. Since commit f66caaf9 (do not overwrite files in leading path), some of those paths do not have static buffers, so we have to keep a copy. Use string_list's to accomplish this. This changes the order of the list to the order in which the paths are processed. Previously, it was reversed. Signed-off-by: Clemens Buchacher <drizzd@aon.at> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-09-03Move "show_all_errors = 1" to setup_unpack_trees_porcelain()Matthieu Moy
Not only this makes the code clearer since setting up the porcelain error message is meant to work with show_all_errors, but this fixes a call to setup_unpack_trees_porcelain() in git_merge_trees() which did not set show_all_errors. add_rejected_path() used to double-check whether it was running in plumbing mode. This check was ineffective since it was setting show_all_errors too late for traverse_trees() to see it, and is made useless by this patch. Remove it. Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>