src/refdb_fs.c


Log

Author Commit Date CI Message
Patrick Steinhardt e54343a4 2019-06-29T09:17:32 fileops: rename to "futils.h" to match function signatures Our file utils functions all have a "futils" prefix, e.g. `git_futils_touch`. One would thus naturally guess that their definitions and implementation would live in files "futils.h" and "futils.c", respectively, but in fact they live in "fileops.h". Rename the files to match expectations.
Patrick Steinhardt 658022c4 2019-07-18T13:53:41 configuration: cvar -> configmap `cvar` is an unhelpful name. Refactor its usage to `configmap` for more clarity.
Patrick Steinhardt de70bb46 2019-06-13T15:27:22 global: convert trivial `fnmatch` users to use `wildcard` Upstream git.git has converted its codebase to use wildcard in favor of fnmatch in commit 70a8fc999d (stop using fnmatch (either native or compat), 2014-02-15). To keep our own regex-matching in line with what git does, convert all trivial instances of `fnmatch` usage to use `wildcard`, instead. Trivial usage is defined to be use of `fnmatch` with either no flags or flags that have a 1:1 equivalent in wildmatch (PATHNAME, IGNORECASE).
Patrick Steinhardt 451df793 2019-06-13T15:20:23 posix: remove implicit include of "fnmatch.h" We're about to phase out our bundled fnmatch implementation as git.git has moved to wildmatch long ago in 2014. To make it easier to spot which files are stilll using fnmatch, remove the implicit "fnmatch.h" include in "posix.h" and instead include it explicitly.
Etienne Samson 2e246474 2019-04-16T13:19:53 refdb_fs: make use of the `GIT_CONTAINER_OF` macro
Patrick Steinhardt 94743daf 2019-02-15T11:16:46 refdb_fs: fix race when migrating loose to packed refs in iteration Right now, we first load the packed refs cache and only afterwards load the loose references. This is susceptible to a race when the loose ref is being migrated to a packed cache by e.g. git-pack-refs(1): libgit2 git-pack-refs 1. We load the packed ref, which does not yet have the migrated reference. 2. git-pack-refs updates the packed ref file to have the migrated ref. 3. git-pack-refs deletes the old loose ref. 4. We look up the loose ref. So we now do not find the reference at all and will never iterate over it. Fix the issue by reversing the order: instead of first loading the packed refs, we will now look up the loose reference first. If it has already been deleted, then it must already be present in the packed-refs by definition, as git.git will only delete the reference after updating the packed refs file.
Patrick Steinhardt 3ff0e3b5 2019-02-15T11:16:05 refdb_fs: remove ordering dependency on loose/packed refs loading Right now, loading loose refs has the side-effect of setting the `PACKREF_SHADOWED` flag for references that exist both in the loose and the packed refs. Because of this, we are force do first look up packed refs and only afterwards loading the packed refs. This is susceptible to a race, though, when refs are being repacked: when first loading the packed cache, then it may not yet have the migrated loose ref. But when now trying to look up the loose reference afterwards, then it may already have been migrated. Thus, we would fail to find this reference in this scenario. Remove this ordering dependency to allow fixing the above race. Instead of setting the flag when loading loose refs, we will now instead set it lazily when iterating over the loose refs. This even has the added benefit of not requiring us to lock the packed refs cache, as we already have an owned copy of it.
Patrick Steinhardt 83333814 2019-02-15T10:56:50 refdb_fs: do not lazily copy packed ref cache When creating a new iterator, we eagerly load loose refs but only lazily create a copy of packed refs. The lazy load only happens as soon as we have iterated over all loose refs, opening up a potentially wide window for races. This may lead to an inconsistent view e.g. when the caller decides to reload packed references somewhen between iterating the loose refs, which is unexpected. Fix the issue by eagerly copying the sorted cache. Note that right now, we are heavily dependent on ordering here: we first need to reload packed refs, then we have to load loose refs and only as a last step are we allowed to copy the cache. This is because loading loose refs has the side-effect of setting the `PACKED_SHADOWED` flag in the packed refs cache, which we require to avoid outputting packed refs that already exist as loose refs.
Patrick Steinhardt 32063d82 2019-02-15T10:41:30 refdb_fs: refactor error handling in iterator creation Refactor the error handling in `refdb_fs_backend__iterator` to always return the correct error code returned by the failing function.
Patrick Steinhardt 8c773438 2019-02-15T10:15:39 refdb_fs: fix potential race with ref repacking in `exists` callback When repacking references, git.git will first update the packed refs and only afterwards delete any existing loose references that have now been moved to the new packed refs file. Due to this, there is a potential for racing if one first reads the packfile (which has not been updated yet) and only then trying to read the loose reference (which has just been deleted). In this case, one will incorrectly fail to lookup the reference and it will be reported as missing. Naturally, this is exactly what we've been doing in `refdb_fs_backend__exists`. Fix the race by reversing the lookup: we will now first check if the loose reference exists and only afterwards refresh the packed file.
Edward Thomson f673e232 2018-12-27T13:47:34 git_error: use new names in internal APIs and usage Move to the `git_error` name in the internal API for error-related functions.
Edward Thomson ed8cfbf0 2019-01-17T00:32:31 references: use new names in internal usage Update internal usage to use the `git_reference` names for constants.
Patrick Steinhardt 8dde7e11 2018-12-19T11:04:58 refdb_fs: refactor error handling in `refdb_reflog_fs__delete` The function `refdb_reflog_fs__delete` uses the `if (!error && foobar())` pattern of checking, where error conditions are being checked by following calls to different code. This does not match our current style, where the call-site of a function is usually directly responsible for checking the return value. Convert the function to use `if ((error = foobar()) < 0) goto out;` style. Note that this changes the code flow a bit: previously, we were always trying to delete empty reference hierarchies even if deleting the reflog entry has failed. This wasn't much of a problem -- if deletion failed, the hierarchy will still contain at least one file and thus the function call was an expensive no-op. Now, we will only perform this deletion if we have successfully removed the reflog.
Patrick Steinhardt bc219657 2018-12-19T11:01:55 Merge pull request #4833 from csware/drop-empty-dirs Remove empty (sub-)directories when deleting refs
Edward Thomson 168fe39b 2018-11-28T14:26:57 object_type: use new enumeration names Use the new object_type enumeration names within the codebase.
Etienne Samson e226ad8f 2018-11-17T17:55:10 refs: add support for core.logAllRefUpdates=always Since we were not expecting this config entry to contain a string, we would fail as soon as its (cached) value would be accessed. Hence, provide some constants for the 4 states we use, and account for "always" when we decide to reflog changes.
Sven Strickroth 9f48dc3b 2018-10-05T12:47:32 Remove empty directories when deleting refs Signed-off-by: Sven Strickroth <email@cs-ware.de>
Patrick Steinhardt ecf4f33a 2018-02-08T11:14:48 Convert usage of `git_buf_free` to new `git_buf_dispose`
Julian Ganz 05e891f1 2018-06-01T08:44:30 refdb_fs: test whether the base directory exists when globbing This commit fixes a regression introduced by 20a2b02d9a1bcb4825ec49605146223c565dcacf The commit introduced an optimization for finding references using a glob: rather than iterating over all references and matching each one against the glob, we would iterate only over references within the directory common to all possible references which may match against the glob. However, contrary to the `ref/` directory, which was the previous entry point for the iteration, this directory may not exist. In this case, the optimization causes an error (`ENOENT`) rather than the iterator simply yielding no references. This patch fixes the regression by checkign for this specific case.
Carlos Martín Nieto 7f6c1ce9 2018-05-29T21:04:39 Merge pull request #4660 from libgit2/cmn/submodule-traversal Fixes for CVE 2018-11235
Carlos Martín Nieto a7168b47 2018-05-22T16:13:47 path: reject .gitmodules as a symlink Any part of the library which asks the question can pass in the mode to have it checked against `.gitmodules` being a symlink. This is particularly relevant for adding entries to the index from the worktree and for checking out files.
Patrick Steinhardt 0a19c151 2018-05-09T14:14:06 Merge pull request #4629 from neithernut/enhance-glob-perf refdb_fs: enhance performance of globbing
Julian Ganz 20a2b02d 2018-04-18T19:23:40 refdb_fs: enable root arbitration for fixed portion of globs A glob used for iteration may start with an entire path containing no special characters. If we start scanning for references within that path rather than in `refs/`, we may end up scanning only a small fraction of all references.
Julian Ganz 27e98cf7 2018-04-18T19:21:22 refdb_fs: prepare arbitration of the root used for ref iteration Instead of a hardcoded "refs", we may choose a different directory within the git directory as the root from which we look for references.
Patrick Steinhardt 5ace1494 2018-04-26T11:45:38 Merge pull request #4633 from csware/worktree-delereref Fix deletion of unrelated branch on worktree
Sven Strickroth fd7b5bc3 2018-04-20T12:54:41 Fix deletion of unrelated branch on worktree Signed-off-by: Sven Strickroth <email@cs-ware.de>
Sven Strickroth eb0a3afd 2018-03-11T15:35:56 worktree: Read worktree specific reflog for HEAD Signed-off-by: Sven Strickroth <email@cs-ware.de>
Edward Thomson 9e94b6af 2017-12-30T00:12:46 iterator: cleanups with symlink dir handling Perform some error checking when examining symlink directories.
Andy Doan e9628e7b 2017-10-30T11:38:33 branches: Check symlinked subdirectories Native Git allows symlinked directories under .git/refs. This change allows libgit2 to also look for references that live under symlinked directories. Signed-off-by: Andy Doan <andy@opensourcefoundries.com>
Patrick Steinhardt 0c7f49dd 2017-06-30T13:39:01 Make sure to always include "common.h" first Next to including several files, our "common.h" header also declares various macros which are then used throughout the project. As such, we have to make sure to always include this file first in all implementation files. Otherwise, we might encounter problems or even silent behavioural differences due to macros or defines not being defined as they should be. So in fact, our header and implementation files should make sure to always include "common.h" first. This commit does so by establishing a common include pattern. Header files inside of "src" will now always include "common.h" as its first other file, separated by a newline from all the other includes to make it stand out as special. There are two cases for the implementation files. If they do have a matching header file, they will always include this one first, leading to "common.h" being transitively included as first file. If they do not have a matching header file, they instead include "common.h" as first file themselves. This fixes the outlined problems and will become our standard practice for header and source files inside of the "src/" from now on.
Patrick Steinhardt 6c23704d 2017-06-08T21:40:18 settings: rename `GIT_OPT_ENABLE_SYNCHRONOUS_OBJECT_CREATION` Initially, the setting has been solely used to enable the use of `fsync()` when creating objects. Since then, the use has been extended to also cover references and index files. As the option is not yet part of any release, we can still correct this by renaming the option to something more sensible, indicating not only correlation to objects. This commit renames the option to `GIT_OPT_ENABLE_FSYNC_GITDIR`. We also move the variable from the object to repository source code.
Patrick Steinhardt 90388aa8 2017-06-06T15:02:23 refdb_fs: be explicit about using null-OID if we cannot resolve ref
Edward Thomson f623cf89 2017-03-22T20:32:55 Merge pull request #4163 from pks-t/pks/submodules-with-worktrees Worktree fixes
Edward Thomson 6fd6c678 2017-03-22T20:29:22 Merge pull request #4030 from libgit2/ethomson/fsync fsync all the things
Patrick Steinhardt 097f0105 2017-03-17T08:54:53 refdb: create references in commondir References for a repository are usually created inside of its gitdir. When using worktrees, though, these references are not to be created inside the worktree gitdir, but instead inside the gitdir of its parent repository, which is the commondir. Like this, branches will still be available after the worktree itself has been deleted. The filesystem refdb currently still creates new references inside of the gitdir. Fix this and have it create references in commondir.
Edward Thomson 83580562 2017-03-06T13:14:47 refdb_fs: honor the namespace
Edward Thomson 1c04a96b 2017-02-28T12:29:29 Honor `core.fsyncObjectFiles`
Edward Thomson 2a5ad7d0 2017-02-17T16:42:40 fsync: call it "synchronous" object writing Rename `GIT_OPT_ENABLE_SYNCHRONIZED_OBJECT_CREATION` -> `GIT_OPT_ENABLE_SYNCHRONOUS_OBJECT_CREATION`.
Edward Thomson eb56ed81 2016-12-15T14:49:43 refdb_fs: optionally fsync packed refs
Edward Thomson af3dcb0e 2016-12-15T10:56:52 refdb_fs: optionally fsync loose references
Patrick Steinhardt 13c3bc9a 2017-01-27T14:32:23 strmap: remove GIT__USE_STRMAP macro
Patrick Steinhardt 6da6b425 2017-02-14T11:13:32 refdb: catch additional per-worktree refs The upstream git.git project currently identifies all references inside of `refs/bisect/` as well as `HEAD` as per-worktree references. This is already incorrect and is currently being fixed by an in-flight topic [1]. The new behavior will be to match all pseudo-references outside of the `refs/` hierarchy as well as `refs/bisect/`. Our current behavior is to mark a selection of pseudo-references as per-worktree, only. This matches more pseudo-references than current git, but forgets about `refs/bisect/`. Adjust behavior to match the in-flight topic, that is classify the following references as per-worktree: - everything outside of `refs/` - everything inside of `refs/bisect/` [1]: <20170213152011.12050-1-pclouds@gmail.com>
Patrick Steinhardt 84f56cb0 2016-11-04T11:59:52 repository: rename `path_repository` and `path_gitlink` The `path_repository` variable is actually confusing to think about, as it is not always clear what the repository actually is. It may either be the path to the folder containing worktree and .git directory, the path to .git itself, a worktree or something entirely different. Actually, the intent of the variable is to hold the path to the gitdir, which is either the .git directory or the bare repository. Rename the variable to `gitdir` to avoid confusion. While at it, also rename `path_gitlink` to `gitlink` to improve consistency.
Patrick Steinhardt e9403024 2015-09-24T15:32:26 refdb: look for reflog in commondir
Patrick Steinhardt e0a6c28e 2015-09-16T16:09:24 refdb: introduce commondir awareness The refdb_fs_backend is not aware of the git commondir, which stores common objects like the o bject database and packed/loose refereensces when worktrees are used. Make refdb_fs_backend aware of the common directory by introducing a new commonpath variable that points to the actual common path of the database and using it instead of the gitdir for the mentioned objects.
Patrick Steinhardt 71dd0861 2015-09-17T11:40:55 refdb: rename refdb_fs_backend's .path to .gitpath The variable '.path' of the refdb_fs_backend struct becomes confusing regarding the introduction of the git commondir. It does not immediatly become obvious what it should point to. Fix this problem by renaming the variable to `gitpath`, clarifying that it acutally points to the `.git` directory of the repository, in contrast to the commonpath directory, which points to the directory containing shared objects like references and the object store.
Edward Thomson 909d5494 2016-12-29T12:25:15 giterr_set: consistent error messages Error messages should be sentence fragments, and therefore: 1. Should not begin with a capital letter, 2. Should not conclude with punctuation, and 3. Should not end a sentence and begin a new one
Carlos Martín Nieto 6ab65b80 2016-12-11T17:56:38 refdb: bubble up recursive rm when locking a ref Failure to bubble up this error means some locking errors do not get reported as such on Windows.
Carlos Martín Nieto 21e0fc32 2016-11-14T17:55:49 Plug a leak in the refs compressor
Carlos Martín Nieto ce5553d4 2016-03-10T22:01:09 refdb: bubble up locked files on the read side On Windows we can find locked files even when reading a reference or the packed-refs file. Bubble up the error in this case as well to allow callers on Windows to retry more intelligently.
Carlos Martín Nieto 33248b9e 2016-03-10T12:22:34 refdb: remove a check-delete race when removing a loose ref It does not help us to check whether the file exists before trying to unlink it since it might be gone by the time unlink is called. Instead try to remove it and handle the resulting error if it did not exist.
Carlos Martín Nieto 2e09106e 2015-12-24T17:49:49 refdb: bubble up the error code when compressing the db This allows the caller to know the errors was e.g. due to the packed-refs file being already locked and they can try again later.
Carlos Martín Nieto dd1ca6f1 2015-12-24T17:38:41 refdb: refactor the lockfile cleanup We can reduce the duplication by cleaning up at the beginning of the loop, since it's something we want to do every time we continue.
Carlos Martín Nieto 7ea4710a 2015-12-24T17:30:24 refdb: don't report failure for expected errors There might be a few threads or processes working with references concurrently, so fortify the code to ignore errors which come from concurrent access which do not stop us from continuing the work. This includes ignoring an unlinking error. Either someone else removed it or we leave the file around. In the former case the job is done, and in the latter case, the ref is still in a valid state.
Carlos Martín Nieto 2d9aec99 2015-12-24T14:01:38 refdb: make ref deletion after pack safer In order not to undo concurrent modifications to references, we must make sure that we only delete a loose reference if it still has the same value as when we packed it. This means we need to lock it and then compare the value with the one we put in the packed file.
Carlos Martín Nieto 9914efec 2015-12-24T14:00:48 refdb: bubble up errors We can get useful information like GIT_ELOCKED out of this instead of just -1.
Patrick Steinhardt b27ccad2 2016-03-10T16:11:51 refdb_fs: fail if refcache returns NULL pointer We usually check entries returned by `git_sortedcache_entry` for NULL pointers. As we have a write lock in `packed_write`, though, it really should not happen that the function returns NULL. Assert that ref is not NULL to silence a Coverity warning.
Patrick Steinhardt 793e0855 2016-02-22T14:06:48 refdb_fs: remove unnecessary check for NULL The fail-label of `reflog_parse` explicitly checks the entry poitner for NULL before freeing it. When we jump to the label the variable has to be set to a non-NULL and valid pointer though: if the allocation fails we immediately return with an error code and if the loop was not entered we return with a success code, withouth executing the label's code. Remove the useless NULL-check to silence Coverity.
Edward Thomson 318b825e 2016-02-16T17:11:46 index: allow read of index w/ illegal entries Allow `git_index_read` to handle reading existing indexes with illegal entries. Allow the low-level `git_index_add` to add properly formed `git_index_entry`s even if they contain paths that would be illegal for the current filesystem (eg, `AUX`). Continue to disallow `git_index_add_bypath` from adding entries that are illegal universally illegal (eg, `.git`, `foo/../bar`).
Edward Thomson 0a700ee3 2015-11-03T17:34:54 reflog: error when a directory is at reflog path When a non-empty directory exists and prevents the creation of a reflog, provide a more informative error message.
Edward Thomson b46c7ee5 2015-11-03T17:18:00 refs: complain when a directory exists at ref When a (non-empty) directory exists at the reference target location, complain with a more actionable error message.
Carlos Martín Nieto fd74bd08 2015-10-29T20:37:48 Merge pull request #3486 from srajko/reflog-segfault-fix Fix segfault when reading reflog with extra newlines
Stjepan Rajko 335c9e2f 2015-10-26T15:33:00 Prevent segfault when parsing a reflog with oid parse error Using calloc instead of malloc because the parse error will lead to an immediate free of committer (and its properties, which can segfault on free if undefined - test_refs_reflog_reflog__reading_a_reflog_with_invalid_format_returns_error segfaulted before the fix). #3458
Vicent Marti 1e5e02b4 2015-10-27T17:26:04 pool: Simplify implementation
Edward Thomson ac2fba0e 2015-09-16T15:07:27 git_futils_mkdir_*: make a relative-to-base mkdir Untangle git_futils_mkdir from git_futils_mkdir_ext - the latter assumes that we own everything beneath the base, as if it were being called with a base of the repository or working directory, and is tailored towards checkout and ensuring that there is no bogosity beneath the base that must be cleaned up. This is (at best) slow and (at worst) unsafe in the larger context of a filesystem where we do not own things and cannot do things like unlink symlinks that are in our way.
Edward Thomson ed1c6446 2015-07-28T11:41:27 iterator: use an options struct instead of args
Carlos Martín Nieto 01d0c02d 2015-07-12T19:08:06 refdb: delete a ref's reflog upon deletion Removing a reflog upon ref deletion is something which only some backends might wish to do. Backends which are database-backed may wish to archive a reflog, log-based ones may not need to do anything.
Carlos Martín Nieto d578b45f 2015-03-08T16:46:33 refdb: use the same id for old and new when renaming a reference When we rename a reference, we want the old and new ids to be the same one (as we did not change it). The normal code path looks up the old id from the current value of the brtanch, but by the time we look it up, it does not exist anymore and thus we write a zero id. Pass the old id explicitly instead.
Stefan Widgren c8e02b87 2015-02-15T21:07:05 Remove extra semicolon outside of a function Without this change, compiling with gcc and pedantic generates warning: ISO C does not allow extra ‘;’ outside of a function.
Jeff Hostetler 1589a93a 2015-02-02T16:50:10 Fix branch creation when branch name matches namespace of previously deleted branch
Edward Thomson ee5da720 2014-12-02T22:20:42 reference_create: validate loose names Validate loose reference names on Win32.
Edward Thomson a64119e3 2014-11-25T18:13:00 checkout: disallow bad paths on win32 Disallow: 1. paths with trailing dot 2. paths with trailing space 3. paths with trailing colon 4. paths that are 8.3 short names of .git folders ("GIT~1") 5. paths that are reserved path names (COM1, LPT1, etc). 6. paths with reserved DOS characters (colons, asterisks, etc) These paths would (without \\?\ syntax) be elided to other paths - for example, ".git." would be written as ".git". As a result, writing these paths literally (using \\?\ syntax) makes them hard to operate with from the shell, Windows Explorer or other tools. Disallow these.
Carlos Martín Nieto ab8d9242 2014-06-28T06:39:38 Introduce reference transactions A transaction allows you to lock multiple references and set up changes for them before applying the changes all at once (or as close as the backend supports). This can be used for replication purposes, or for making sure some operations run when the reference is locked and thus cannot be changed.
Carlos Martín Nieto 2d945f82 2014-06-02T17:44:51 refs: copy the packed refs on iteration This lets us work without worrying about what's happening but work on a snapshot.
Russell Belfer 2b52a0bf 2014-05-13T16:32:27 Increase use of config snapshots And decrease extra reload checks of config data.
Carlos Martín Nieto 4f9d5414 2014-04-26T14:29:18 refdb: fix typo and wording
Russell Belfer 18234b14 2014-02-21T09:14:16 Add efficient git_buf join3 API There are a few places where we need to join three strings to assemble a path. This adds a simple join3 function to avoid the comparatively expensive join_n (which calls strlen on each string twice).
Carlos Martín Nieto 1c351659 2014-03-20T09:55:47 reflog: remove some dead code
Carlos Martín Nieto 83504371 2014-03-19T22:27:23 reflog: follow core.logallrefupdates On bare by default, or when core.logallrefupdates is false, we must not write the reflog.
Carlos Martín Nieto 99797c96 2014-03-19T18:14:35 reflog: handle symref chains Given HEAD -> master -> foo, when updating foo's reflog we should also update HEAD's, as it's considered the current branch.
Carlos Martín Nieto 6aaae94a 2014-03-19T16:30:37 reflog: handle the birth of a branch The reflog append function was overzealous in its checking. When passed an old and new ids, it should not do any checking, but just serialize the data to a reflog entry.
Carlos Martín Nieto afc57eb4 2014-03-19T06:59:09 reflog: simplify the append logic Remove some duplicated logic.
Carlos Martín Nieto 1afe1400 2014-03-18T22:16:58 refdb: don't update when there's no need If the caller wants to update a ref to point to the same target as it currently has, we should return early and avoid writing to the reflog.
Carlos Martín Nieto bac95e6e 2014-03-18T19:41:03 reflog: more comprehensive HEAD tests The existing ones lack checking zeroed ids when switching back from an unborn branch as well as what happens when detaching. The reflog appending function mistakenly wrote zeros when dealing with a detached HEAD. This explicitly checks for those situations and fixes them.
Carlos Martín Nieto 4b7e1b9e 2014-01-15T13:19:48 refs: append to the HEAD reflog when updating the current branch When we update the current branch, we must also append to HEAD's reflog to keep them in sync. This is a bit of a hack, but as git.git says, it covers 100% of default cases.
Carlos Martín Nieto ae32c54e 2014-03-05T20:28:49 Plug a few leaks in the tests
Carlos Martín Nieto a213a7bf 2014-03-05T20:32:53 refdb: catch a directory disappearing If a directory disappears between the time we look up the entries of its parent and the time when we go to look at it, we should ignore the error and move forward. This fixes #2046.
Carlos Martín Nieto 77ad6754 2014-02-10T14:38:01 refs: conditional wording fixups This addresses arrbee's concerns about wording in the conditional reference udpate functions.
Carlos Martín Nieto b7ae71ec 2014-02-05T11:47:33 refs: catch cases where the ref type has changed If the type of the on-disk reference has changed, the old value comparison should fail.
Carlos Martín Nieto 7ee8c7e6 2014-02-05T11:07:34 refs: placeholder conditional delete We don't actually pass the old value yet.
Carlos Martín Nieto f8621dde 2014-02-05T10:42:42 refs: factor out old value comparison We will reuse this later for deletion.
Carlos Martín Nieto 91123661 2014-02-04T22:04:00 refdb: add conditional symbolic updates Add a parameter to the backend to allow checking for the old symbolic target.
Carlos Martín Nieto 1202c7ea 2014-02-04T21:35:44 refs: fix leak on successful update Free the old ref even on success.
Carlos Martín Nieto fc4728e3 2014-01-29T14:07:18 refs: return GIT_EMODIFIED if the ref target moved In case we loose the race to update the reference, return GIT_EMODIFIED to let the user distinguish it from other types of errors.
Carlos Martín Nieto 9b148098 2013-12-18T19:58:16 refs: conditional ref updates Allow updating references if the old value matches the given one.
Ben Straub 7f058b86 2014-02-01T19:29:48 Check for errors when dereferencing symbolic refs
Ben Straub ee8e6afd 2014-02-01T11:46:44 Reflog: correct "new" id for reattaching HEAD
Ben Straub 6357388e 2014-01-27T13:24:10 Enhance clarity
Ben Straub a2311f92 2014-01-27T13:12:31 Ensure updating HEAD updates reflog
Vicent Marti 4e1f517c 2013-12-18T09:33:45 Merge pull request #1920 from libgit2/cmn/ref-with-log Reference operations with log