Log

Author Commit Date CI Message
Patrick Steinhardt e82dd813 2017-06-08T11:52:32 buffer: fix `ENSURE_SIZE` macro referencing wrong variable While the `ENSURE_SIZE` macro gets a reference to both the buffer that is to be resized and a new size, we were not consistently referencing the passed buffer, but instead a variable `buf`, which is not passed in. Funnily enough, we never noticed because our buffers seem to always be named `buf` whenever the macro was being used. Fix the macro by always using the passed-in buffer. While at it, add braces around all mentions of passed-in variables as should be done with macros to avoid subtle errors. Found-by: Edward Thompson
Patrick Steinhardt 97eb5ef0 2017-06-07T10:05:54 buffer: rely on `GITERR_OOM` set by `git_buf_try_grow` The function `git_buf_try_grow` consistently calls `giterr_set_oom` whenever growing the buffer fails due to insufficient memory being available. So in fact, we do not have to do this ourselves when a call to any buffer-growing function has failed due to an OOM situation. But we still do so in two functions, which this patch cleans up.
Edward Thomson dd0aa811 2017-06-04T22:46:07 Merge branch 'pr/4228'
Edward Thomson f0848dd7 2017-06-04T22:44:30 worktree: upgrade lock to an int
Edward Thomson 82e929a8 2017-06-04T19:35:39 Merge pull request #4239 from roblg/toplevel-dir-ignore-fix Fix issue with directory glob ignore in subdirectories
Edward Thomson 04de614b 2017-06-04T19:03:07 Merge pull request #4243 from pks-t/pks/submodule-workdir Submodule working directory
Carlos Martín Nieto a1023a43 2017-05-20T17:18:07 Merge pull request #4179 from libgit2/ethomson/expand_tilde Introduce home directory expansion function for config files, attribute files
Carlos Martín Nieto 9b1260d3 2017-05-20T14:18:32 Merge pull request #4097 from implausible/fix/auto-detect-proxy-callbacks Fix proxy auto detect not utilizing callbacks
Carlos Martín Nieto e694e4e9 2017-05-20T14:17:36 Merge pull request #4174 from libgit2/ethomson/set_head_to_tag git_repository_set_head: use tag name in reflog
Carlos Martín Nieto 119bdd86 2017-05-20T14:13:27 Merge pull request #4231 from wabain/open-revrange revparse: support open-ended ranges
Patrick Steinhardt 2696c5c3 2017-05-19T09:21:17 repository: make check if repo is a worktree more strict To determine if a repository is a worktree or not, we currently check for the existence of a "gitdir" file inside of the repository's gitdir. While this is sufficient for non-broken repositories, we have at least one case of a subtly broken repository where there exists a gitdir file inside of a gitmodule. This will cause us to misidentify the submodule as a worktree. While this is not really a fault of ours, we can do better here by observing that a repository can only ever be a worktree iff its common directory and dotgit directory are different. This allows us to make our check whether a repo is a worktree or not more strict by doing a simple string comparison of these two directories. This will also allow us to do the right thing in the above case of a broken repository, as for submodules these directories will be the same. At the same time, this allows us to skip the `stat` check for the "gitdir" file for most repositories.
Patrick Steinhardt 9f9fd05f 2017-05-19T08:59:46 repository: factor out worktree check The check whether a repository is a worktree or not is currently done inside of `git_repository_open_ext`. As we want to extend this function later on, pull it out into its own function `repo_is_worktree` to ease working on it.
Patrick Steinhardt 32841973 2017-05-19T08:38:47 repository: improve parameter names for `find_repo` The out-parameters of `find_repo` containing found paths of a repository are a tad confusing, as they are not as obvious as they could be. Rename them like following to ease reading the code: - `repo_path` -> `gitdir_path` - `parent_path` -> `workdir_path` - `link_path` -> `gitlink_path` - `common_path` -> `commondir_path`
Patrick Steinhardt 57121a23 2017-05-19T08:34:32 repository: clear out-parameter instead of freeing it The `path` out-parameter of `find_repo` is being sanitized initially such that we do not try to append to existing content. The sanitization is done via `git_buf_free`, though, which forces us to needlessly reallocate the buffer later in the function. Fix this by using `git_buf_clear` instead.
Robert Gay c3b8e8b3 2017-05-14T10:28:05 Fix issue with directory glob ignore in subdirectories
Patrick Steinhardt e526fbc7 2017-05-17T09:23:06 tests: add test suite for opening submodules
Carlos Martín Nieto 924f5d12 2017-05-16T18:02:13 Merge pull request #4240 from pks-t/pks/fix-gcc-warnings Fix GCC warnings
Patrick Steinhardt 98a5f081 2017-05-03T13:53:13 tests: threads::basic: remove unused function `exit_abruptly`
Patrick Steinhardt 7d7f6d33 2017-05-03T13:52:55 tests: clone::local: compile UNC functions for Windows only
Patrick Steinhardt 8d93a11c 2017-05-03T12:38:55 odb: fix printf formatter for git_off_t The fields `declared_size` and `received_bytes` of the `git_odb_stream` are both of type `git_off_t` which is defined as a signed integer. When passing these values to a printf-style string in `git_odb_stream__invalid_length`, though, we format these as PRIuZ, which is unsigned. Fix the issue by using PRIdZ instead, silencing warnings on macOS.
Patrick Steinhardt f0ca00e0 2017-05-03T12:25:48 examples: network: refactor credentials callback The credentials callback reads the username and password via scanf into fixed-length arrays. While these are simply examples and as such not as interesting, the unchecked return value of scanf causes GCC to emit warnings. So while we're busy to shut up GCC, we also fix the possible overflow of scanf by using getline instead.
Patrick Steinhardt 7776db51 2017-05-03T12:15:12 odb: shut up gcc warnings regarding uninitilized variables The `error` variable is used as a return value in the out-section of both `odb_read_1` and `read_prefix_1`. While the value will actually always be initialized inside of this section, GCC fails to realize this due to interactions with the `found` variable: if `found` is set, the error will always be initialized. If it is not, we return early without reaching the out-statements. Shut up the warnings by initializing the error variable, even though it is unnecessary.
Carlos Martín Nieto 87f5fbab 2017-05-11T21:22:20 Merge pull request #4238 from libgit2/ethomson/vs_to_vsts Update README: VS -> VSTS
Edward Thomson 1e27b89f 2017-05-11T13:56:55 Update README: VS -> VSTS libgit2 is no longer used in Visual Studio Team Services, it's used in Visual Studio Team Services.
William Bain 8b107dc5 2017-05-03T11:20:57 revparse: support open-ended ranges Support '..' and '...' ranges where one side is not specified. The unspecified side defaults to HEAD. Closes #4223
Patrick Steinhardt 883eeb5f 2017-05-02T12:35:59 worktree: switch over worktree pruning to an opts structure The current signature of `git_worktree_prune` accepts a flags field to alter its behavior. This is not as flexible as we'd like it to be when we want to enable passing additional options in the future. As the function has not been part of any release yet, we are still free to alter its current signature. This commit does so by using our usual pattern of an options structure, which is easily extendable without breaking the API.
Patrick Steinhardt 8264a30f 2017-05-02T10:11:28 worktree: support creating locked worktrees When creating a new worktree, we do have a potential race with us creating the worktree and another process trying to delete the same worktree as it is being created. As such, the upstream git project has introduced a flag `git worktree add --locked`, which will cause the newly created worktree to be locked immediately after its creation. This mitigates the race condition. We want to be able to mirror the same behavior. As such, a new flag `locked` is added to the options structure of `git_worktree_add` which allows the user to enable this behavior.
Edward Thomson 1b6ab16f 2017-05-04T10:20:33 Merge pull request #4232 from pks-t/pks/schroot-test-fixes tests: repo: fix repo discovery tests on overlayfs
Patrick Steinhardt ffd264d9 2017-05-03T14:51:23 tests: repo: fix repo discovery tests on overlayfs Debian and Ubuntu often use schroot to build their DEB packages in a controlled environment. Depending on how schroot is configured, our tests regarding repository discovery break due to not being able to find the repositories anymore. It turns out that these errors occur when the schroot is configured to use an overlayfs on the directory structures. The reason for this failure is that we usually refrain from discovering repositories across devices. But unfortunately, overlayfs does not have consistent device identifiers for all its files but will instead use the device number of the filesystem the file stems from. So whenever we cross boundaries between the upper and lower layer of the overlay, we will fail to properly detect the repository and bail out. This commit fixes the issue by enabling cross-device discovery in our tests. While it would be preferable to have this turned off, it probably won't do much harm anyway as we set up our tests in a temporary location outside of the parent repository.
Edward Thomson 7849e467 2017-05-02T16:03:41 Merge pull request #4229 from pks-t/pks/ssh-memleaks libssh2 shutdown
Patrick Steinhardt 8c027351 2017-05-02T13:35:09 transports: ssh: report failure initializing libssh2 We unconditionally return success when initializing libssh2, regardless of whether `libgssh2_init` signals success or an error. Fix this by checking its return code.
Patrick Steinhardt 2ce2a48f 2017-05-02T13:37:15 transports: ssh: clean up after libssh2 on exit After calling `libssh2_init`, we need to clean up after the library by executing `libssh2_exit` as soon as we exit. Register a shutdown handler to do so which simply calls `libssh2_exit`. This fixes several memory leaks.
Patrick Steinhardt a7aa73a5 2017-05-02T10:02:36 worktree: introduce git_worktree_add options The `git_worktree_add` function currently accepts only a path and name for the new work tree. As we may want to expand these parameters in future versions without adding additional parameters to the function for every option, this commit introduces our typical pattern of an options struct. Right now, this structure is still empty, which will change with the next commit.
Edward Thomson 9cc0ba6b 2017-05-02T09:25:20 Merge pull request #4226 from libgit2/ethomson/memleak WIP: squash some memleaks
Edward Thomson 1dc89aab 2017-05-01T21:34:21 object validation: free some memleaks
Edward Thomson 34c13106 2017-05-01T21:32:24 signature: free dup'd buffers on parse error
Edward Thomson 4dbcf0e6 2017-05-01T19:34:04 remote: free the config snapshot This reverts commit 5552237 and frees the snapshot properly.
Edward Thomson be343b88 2017-05-01T18:56:55 worktrees: cleanup some memory leaks Be sure to clean up looked up references. Free buffers instead of merely clearing them. Use `git__free` instead of `free`.
Edward Thomson 13c1bf07 2017-05-01T16:17:48 Merge pull request #4197 from pks-t/pks/verify-object-hashes Verify object hashes
Edward Thomson d8702843 2017-05-01T16:11:56 Merge pull request #4206 from libgit2/cmn/transport-get-proxy transport: provide a getter for the proxy options
Edward Thomson 5700ee9c 2017-05-01T16:10:50 Merge pull request #4216 from pks-t/pks/debian-test-failures Debian HTTPS feature test failure
Edward Thomson f86f35d6 2017-05-01T15:23:54 Merge branch 'pr/4225'
Edward Thomson 45071cec 2017-05-01T15:23:27 git_remote_push: document that NULL refspecs allowed
Edward Thomson f9921ad7 2017-05-01T15:19:41 Merge pull request #4224 from yuyichao/push-free-config Do not free config when creating remote
Yichao Yu 90cdf44f 2017-04-29T13:00:07 Allow NULL refspec in git_remote_push Since this is allowed in `git_remote_upload`
Yichao Yu 55522376 2017-04-29T12:28:35 Do not free config when creating remote The regression was introduced in 22261344de18b3cc60ee6937468d66a6a6a28875
Patrick Steinhardt e0973bc0 2017-04-28T14:05:15 odb: verify hashes in read_prefix_1 While the function reading an object from the complete OID already verifies OIDs, we do not yet do so for reading objects from a partial OID. Do so when strict OID verification is enabled.
Patrick Steinhardt 14109620 2017-04-28T14:03:54 odb: improve error handling in read_prefix_1 The read_prefix_1 function has several return statements springled throughout the code. As we have to free memory upon getting an error, the free code has to be repeated at every single retrun -- which it is not, so we have a memory leak here. Refactor the code to use the typical `goto out` pattern, which will free data when an error has occurred. While we're at it, we can also improve the error message thrown when multiple ambiguous prefixes are found. It will now include the colliding prefixes.
Patrick Steinhardt 35079f50 2017-04-21T07:31:56 odb: add option to turn off hash verification Verifying hashsums of objects we are reading from the ODB may be costly as we have to perform an additional hashsum calculation on the object. Especially when reading large objects, the penalty can be as high as 35%, as can be seen when executing the equivalent of `git cat-file` with and without verification enabled. To mitigate for this, we add a global option for libgit2 which enables the developer to turn off the verification, e.g. when he can be reasonably sure that the objects on disk won't be corrupted.
Patrick Steinhardt 28a0741f 2017-04-10T09:30:08 odb: verify object hashes The upstream git.git project verifies objects when looking them up from disk. This avoids scenarios where objects have somehow become corrupt on disk, e.g. due to hardware failures or bit flips. While our mantra is usually to follow upstream behavior, we do not do so in this case, as we never check hashes of objects we have just read from disk. To fix this, we create a new error class `GIT_EMISMATCH` which denotes that we have looked up an object with a hashsum mismatch. `odb_read_1` will then, after having read the object from its backend, hash the object and compare the resulting hash to the expected hash. If hashes do not match, it will return an error. This obviously introduces another computation of checksums and could potentially impact performance. Note though that we usually perform I/O operations directly before doing this computation, and as such the actual overhead should be drowned out by I/O. Running our test suite seems to confirm this guess. On a Linux system with best-of-five timings, we had 21.592s with the check enabled and 21.590s with the ckeck disabled. Note though that our test suite mostly contains very small blobs only. It is expected that repositories with bigger blobs may notice an increased hit by this check. In addition to a new test, we also had to change the odb::backend::nonrefreshing test suite, which now triggers a hashsum mismatch when looking up the commit "deadbeef...". This is expected, as the fake backend allocated inside of the test will return an empty object for the OID "deadbeef...", which will obviously not hash back to "deadbeef..." again. We can simply adjust the hash to equal the hash of the empty object here to fix this test.
Patrick Steinhardt d59dabe5 2017-04-10T09:00:51 tests: object: test looking up corrupted objects We currently have no tests which check whether we fail reading corrupted objects. Add one which modifies contents of an object stored on disk and then tries to read the object.
Patrick Steinhardt 86c03552 2017-04-10T09:27:04 tests: object: create sandbox The object::lookup tests do use the "testrepo.git" repository in a read-only way, so we do not set up the repository as a sandbox but simply open it. But in a future commit, we will want to test looking up objects which are corrupted in some way, which requires us to modify the on-disk data. Doing this in a repository without creating the sandbox will modify contents of our libgit2 repository, though. Create the repository in a sandbox to avoid this.
Patrick Steinhardt e29e8029 2017-04-10T10:31:22 tests: odb: make hash of fake backend configurable In the odb::backend::nonrefreshing test suite, we set up a fake backend so that we are able to determine if backend functions are called correctly. During the setup, we also parse an OID which is later on used to read out the pseudo-object. While this procedure works right now, it will create problems later when we implement hash verification for looked up objects. The current OID ("deadbeef") will not match the hash of contents we give back to the ODB layer and thus cannot be verified. Make the hash configurable so that we can simply switch the returned for single tests.
Edward Thomson 7df580fa 2017-04-28T11:58:49 Merge pull request #4191 from pks-t/pks/wt-ref-renames Branch renames with worktrees
Edward Thomson 6cf25a39 2017-04-26T09:09:53 Merge pull request #4219 from pks-t/pks/socket-stream-addrinfo-loop socket_stream: continue to next addrinfo on socket creation failure
Edward Thomson cecd41fb 2017-04-26T09:08:51 Merge pull request #4217 from pks-t/pks/readonly-cfg-backend Honor read-only flag when writing to config backends
Patrick Steinhardt 954e06a8 2017-04-26T12:09:57 socket_stream: continue to next addrinfo on socket creation failure When connecting to a remote via socket stream, we first use getaddrinfo to obtain the possible connection methods followed by creating and connecting the socket. But when creating the socket, we error out as soon as we get an invalid socket instead of trying out other address hints returned by addrinfo. Fix this by continuing on invalid socket instead of returning an error. This fixes connection establishment with musl libc.
Patrick Steinhardt 2a7086fa 2017-04-25T13:23:04 tests: config: verify functionality with read-only backends
Patrick Steinhardt 95f29fb3 2017-04-25T12:40:13 config: skip r/o backends when writing Configuration backends have a readonly-flag which is currently used to distinguish configuration snapshots. But somewhat unexpectedly, we do not use the flag to prevent writing to a readonly backend but happily proceed to do so. This commit modifies logic to also honor the readonly flag for configuration setters. We will now traverse through all backends and pick the first one which is not marked as read-only whenever we want to write new configuration.
Edward Thomson 7f75eeaf 2017-04-25T07:10:33 Merge pull request #4215 from pks-t/pks/diff-stack-free diff_parse: free object instead of its pointer
Patrick Steinhardt 64244131 2017-04-25T12:59:48 config_file: add missing include for `git_config_backend` The config_file.h header provides some inline declarations accessing the `git_config_backend`, but misses its declaration. Add the missing include for "git2/sys/config.h" to add it.
Patrick Steinhardt 417319cc 2017-04-25T10:14:37 tests: core::features: only check for HTTPS if it is supported
Patrick Steinhardt a4de1ae3 2017-04-25T10:14:19 cmake: define GIT_HTTPS when HTTPS is supported
Patrick Steinhardt 1cb30b1b 2017-04-25T09:48:59 diff_parse: free object instead of its pointer In e7330016a (diff_parse: check return value of `git_diff_init_options`, 2017-03-20), we've introduced an error check whether we're able to correctly initialize the diff options. This simple commit actually introduced a segfault in that we now try to free the pointer to the allocated diff in an error case, instead of the allocated diff itself. This commit fixes the issue.
Patrick Steinhardt 0d2f6824 2017-04-21T15:39:03 Merge pull request #4210 from pks-t/pks/misc-fixes Misc fixes
Patrick Steinhardt 13c275ab 2017-04-21T07:49:08 tests: threads::diff: fix warning for unused variable The threads::diff test suite has a static variable `_retries`, which is used on Windows platforms only. As it is unused on other systems, the compiler throws a warning there. Fix the warning by wrapping the declaration in an ifdef.
Patrick Steinhardt f4d1592c 2017-04-21T07:09:59 global: fix typo in `git_libgit2_init` description
Carlos Martín Nieto 8d89e409 2017-04-17T17:19:03 Merge pull request #4192 from libgit2/ethomson/win32_posix Refactor some of the win32 POSIX emulation
Edward Thomson 86536c7e 2017-04-17T15:40:03 win32: `remediation` not `cleanup` The `remediation` function is run in the retry loop in order to attempt to fix any problems that the prior run encountered. There is nothing "cleaned up". Clarify the name.
Carlos Martín Nieto 5c760960 2017-04-17T13:03:03 transport: provide a getter for the proxy options As with the callbacks, third-party implementations of smart subtransports cannot reach into the opaque struct and thus cannot know what options the user set. Add a getter for these options to copy the proxy options into something external implementors can use.
Edward Thomson f9d3b0d0 2017-04-12T09:21:26 Merge pull request #4201 from pks-t/pks/fileops-fd-leak fileops: fix leaking fd in `mmap_ro_file`
Patrick Steinhardt 38b6e700 2017-04-12T08:09:08 fileops: fix leaking fd in `mmap_ro_file` When the `git_futils_mmap_ro_file` function encounters an error after the file has been opened, it will do a simple returns. Instead, we should close the opened file descriptor to avoid a leak. This commit fixes the issue.
Edward Thomson d476d024 2017-04-11T19:18:05 Merge pull request #4196 from pks-t/pks/filter-segfault filter: only close filter if it's been initialized correctly
Edward Thomson a5781e2a 2017-04-11T19:17:11 Merge pull request #4195 from pks-t/pks/openssl-1.1 Fix building against OpenSSL v1.1
Edward Thomson 1262963a 2017-04-11T19:10:28 Merge pull request #4198 from pks-t/pks/git-compat README: document our relation to changes in upstream
Patrick Steinhardt 19a04f67 2017-04-10T12:01:28 README: document our relation to changes in upstream libgit2 is a mere consumer of changes which are trickling down from the upstream git.git project. This commit documents the ramifications caused by this relation.
Patrick Steinhardt 88520151 2017-04-07T13:02:50 openssl_stream: use new initialization function on OpenSSL version >=1.1 Previous to OpenSSL version 1.1, the user had to initialize at least the error strings as well as the SSL algorithms by himself. OpenSSL version 1.1 instead provides a new function `OPENSSL_init_ssl`, which handles initialization of all subsystems. As the new API call will by default load error strings and initialize the SSL algorithms, we can safely replace these calls when compiling against version 1.1 or later. This fixes a compiler error when compiling against OpenSSL version 1.1 which has been built without stubs for deprecated syntax.
Patrick Steinhardt 29081c2f 2017-04-07T12:54:33 openssl_stream: remove locking initialization on OpenSSL version >=1.1 Up to version 1.0, OpenSSL required us to provide a callback which implements a locking mechanism. Due to problems in the API design though this mechanism was inherently broken, especially regarding that the locking callback cannot report errors in an obvious way. Due to this shortcoming, the locking initialization has been completely removed in OpenSSL version 1.1. As the library has also been refactored to not make any use of these callback functions, we can safely remove all initialization of the locking subsystem if compiling against OpenSSL version 1.1 or higher. This fixes a compilation error when compiling against OpenSSL version 1.1 which has been built without stubs for deprecated syntax.
Patrick Steinhardt cf07db2f 2017-04-07T16:05:10 filter: only close filter if it's been initialized correctly In the function `git_filter_list_stream_data`, we initialize, write and subesquently close the stream which should receive content processed by the filter. While we skip writing to the stream if its initialization failed, we still try to close it unconditionally -- even if the initialization failed, where the stream might not be set at all, leading us to segfault. Semantics in this code is not really clear. The function handling the same logic for files instead of data seems to do the right thing here in only closing the stream when initialization succeeded. When stepping back a bit, this is only reasonable: if a stream cannot be initialized, the caller would not expect it to be closed again. So actually, both callers of `stream_list_init` fail to do so. The data streaming function will always close the stream and the file streaming function will not close the stream if writing to it has failed. The fix is thus two-fold: - callers of `stream_list_init` now close the stream iff it has been initialized - `stream_list_init` now closes the lastly initialized stream if the current stream in the chain failed to initialize Add a test which segfaulted previous to these changes.
Edward Thomson e572b631 2017-04-07T09:03:56 Merge pull request #4183 from pks-t/pks/coverity Coverity
Edward Thomson 44998cdb 2017-04-07T09:02:54 Merge pull request #4193 from pks-t/pks/libdir pkgconfig: fix handling of prefixes containing whitespaces
Patrick Steinhardt 22436f29 2017-04-05T14:39:05 pkgconfig: fix handling of prefixes containing whitespaces Our libgit2.pc.in file is quoting the `libdir` variable in our declared "Libs:" line. The intention is to handle whitespaces here, but pkgconfig already does so by automatically escaping whitespace with backslashes. The correct thing to do is to instead quote the prefix, as this is the one which is being substituted by CMake upon installation. As both libdir and includedir will be expanded to "${prefix}/lib" and "${prefix}/include", respectively, pkgconfig will also correctly escape whitespaces. Note that this will actually break when a user manually wants to override libdir and includedir with a path containing whitespace. But actually, this cannot be helped, as always quoting these variables will actuall break the common case of being prefixed with "${prefix}". So we just bail out here and declare this as unsupported out of the box.
Patrick Steinhardt 2a485dab 2017-04-04T18:55:57 refs: update worktree HEADs when renaming branches Whenever we rename a branch, we update the repository's symbolic HEAD reference if it currently points to the branch that is to be renamed. But with the introduction of worktrees, we also have to iterate over all HEADs of linked worktrees to adjust them. Do so.
Patrick Steinhardt 38fc5ab0 2017-04-04T18:44:43 branch: use `foreach_head` to see if a branch is checked out Previously, we have extracted the logic to find and iterate over all HEADs of a repository. Use this function in `git_branch_is_checked_out`.
Patrick Steinhardt 74511aa2 2017-04-04T18:44:29 repository: add function to iterate over all HEADs While we already provide functions to get the current repository's HEAD, it is quite involved to iterate over HEADs of both the repository and all linked work trees. This commit implements a function `git_repository_foreach_head`, which accepts a callback which is then called for all HEAD files.
Patrick Steinhardt 3e84aa50 2017-04-05T13:47:09 repository: get worktree HEAD via `git_reference__read_head` The functions `git_repository_head_for_worktree` and `git_repository_detached_head_for_worktree` both implement their own logic to read the HEAD reference file. Use the new function `git_reference__read_head` instead to unify the code paths.
Patrick Steinhardt 987f5659 2017-04-04T17:12:22 repository: extract function to get path to a file in a work tree The function `read_worktree_head` has the logic embedded to construct the path to `HEAD` in the work tree's git directory, which is quite useful for other callers. Extract the logic into its own function to make it reusable by others.
Patrick Steinhardt 8242cc1a 2017-04-04T18:18:45 repository: set error message if trying to set HEAD to a checked out one If trying to set the HEAD of a repository to another reference, we have to check whether this reference is already checked out in another linked work tree. If it is, we will refuse setting the HEAD and return an error, but do not set a meaningful error message. Add one.
Patrick Steinhardt 5b65ac25 2017-04-05T10:43:18 refs: implement function to read references from file Currently, we only provide functions to read references directly from a repository's reference store via e.g. `git_reference_lookup`. But in some cases, we may want to read files not connected to the current repository, e.g. when looking up HEAD of connected work trees. This commit implements `git_reference__read_head`, which will read out and allocate a reference at an arbitrary path.
Patrick Steinhardt 60297256 2017-04-04T16:12:27 tests: worktree::refs: convert spaces to tabs
Edward Thomson 48f09c6c 2017-04-05T11:59:03 win32: only set `git_win32__retries` where it exists
Edward Thomson 89d403cc 2017-04-05T09:50:12 win32: enable `p_utimes` for readonly files Instead of failing to set the timestamp of a read-only file (like any object file), set it writable temporarily to update the timestamp.
Patrick Steinhardt 9daba9f4 2017-03-28T10:12:23 fileops: do not overwrite correct error message on mmap When executing `git_futils_mmap_ro_file`, we first try to guess whether the file is mmapable at all. Part of this check is whether the file is too large to be mmaped, which can be true on systems with 32 bit `size_t` types. The check is performed by first getting the file size wtih `git_futils_filesize` and then checking whether the returned size can be represented as `size_t`, returning an error if so. While this test also catches the case where the function returned an error (as `-1` is not representable by `size_t`), we will set the misleading error message "file too large to mmap". But in fact, a negative return value from `git_futils_filesize` will be caused by the inability to fstat the file. Fix the error message by handling negative return values separately and not overwriting the error message in that case.
Patrick Steinhardt 756138e4 2017-03-28T09:15:53 blame_git: check return value of `git__calloc` We do not check the return value of `git__calloc`, which may return `NULL` in out-of-memory situations. Fix the error by using `GITERR_CHECK_ALLOC`.
Patrick Steinhardt a76d7502 2017-03-28T09:12:34 path: short-circuit `git_path_apply_relative` on error Short-circuit the call to `git_path_resolve_relative` in case `git_buf_joinpath` returns an error. While this does not fix any immediate errors, the resulting code is easier to read and handles potential new error conditions raised by `git_buf_joinpath`.
Patrick Steinhardt cffd616a 2017-03-28T09:08:41 path: handle error returned by `git_buf_joinpath` In the `_check_dir_contents` function, we first allocate memory for joining the directory and subdirectory together and afterwards use `git_buf_joinpath`. While this function in fact should not fail as memory is already allocated, err on the safe side and check for returned errors.
Patrick Steinhardt 4467aeac 2017-03-28T09:00:48 config_file: handle errors other than OOM while parsing section headers The current code in `parse_section_header_ext` is only prepared to properly handle out-of-memory conditions for the `git_buf` structure. While very unlikely and probably caused by a programming error, it is also possible to run into error conditions other than out-of-memory previous to reaching the actual parsing loop. In these cases, we will run into undefined behavior as the `rpos` variable is only initialized after these triggerable errors, but we use it in the cleanup-routine. Fix the issue by unifying the function's cleanup code with an `end_error` section, which will not use the `rpos` variable.
Edward Thomson 7ece9065 2017-04-03T23:07:16 win32: make posix emulation retries configurable POSIX emulation retries should be configurable so that tests can disable them. In particular, maniacally threading tests may end up trying to open locked files and need retries, which will slow continuous integration tests significantly.
Edward Thomson 1069ad3c 2017-04-03T23:05:53 win32: do not inherit file descriptors
Sven Strickroth d5e6ca1e 2017-01-14T18:39:32 Allow to configure default file share mode for opening files This can prevent FILE_SHARED_VIOLATIONS when used in tools such as TortoiseGit TGitCache and FILE_SHARE_DELETE, because files can be opened w/o being locked any more. Signed-off-by: Sven Strickroth <email@cs-ware.de>