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6f960b55
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2017-06-11T10:37:46
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Merge pull request #4088 from chescock/packfile-name-using-complete-hash
Ensure packfiles with different contents have different names
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d2c4f764
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2017-06-11T09:54:04
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Merge pull request #4260 from libgit2/ethomson/forced_checkout_2
Update to forced checkout and untracked files
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4a0df574
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2017-06-10T18:46:35
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git_futils_rmdir: only allow `EBUSY` when asked
Only ignore `EBUSY` from `rmdir` when the `GIT_RMDIR_SKIP_NONEMPTY` bit
is set.
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83989d70
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2017-06-08T22:23:53
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checkout: cope with untracked files in directory deletion
When deleting a directory during checkout, do not simply delete the
directory, since there may be untracked files. Instead, go into
the iterator and examine each file.
In the original code (the code with the faulty assumption), we look to
see if there's an index entry beneath the directory that we want to
remove. Eg, it looks to see if we have a workdir entry foo and an
index entry foo/bar.txt. If this is not the case, then the working
directory must have precious files in that directory. This part is okay.
The part that's not okay is if there is an index entry foo/bar.txt. It
just blows away the whole damned directory.
That's not cool.
Instead, by simply pushing the directory itself onto the stack and
iterating each entry, we will deal with the files one by one - whether
they're in the index (and can be force removed) or not (and are
precious).
The original code was a bad optimization, assuming that we didn't need
to git_iterator_advance_into if there was any index entry in the folder.
That's wrong - we could have optimized this iff all folder entries are
in the index.
Instead, we need to simply dig into the directory and analyze its
entries.
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6c23704d
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2017-06-08T21:40:18
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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.
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458cea5c
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2017-06-08T14:22:24
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Merge pull request #4255 from pks-t/pks/buffer-grow-errors
Buffer growing cleanups
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90500d81
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2017-06-08T13:56:22
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Merge pull request #4253 from pks-t/pks/cov-fixes
Coverity fixes
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90388aa8
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2017-06-06T15:02:23
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refdb_fs: be explicit about using null-OID if we cannot resolve ref
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78a8f68f
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2017-06-06T14:57:31
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path: only set dotgit flags when configs were read
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9be4c303
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2017-06-06T14:54:48
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worktree: use `git__free` instead of `free`
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0f642f31
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2017-06-06T14:54:19
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refs: properly report errors from `update_wt_heads`
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0c28c72d
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2017-06-06T14:53:45
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fileops: check return value of `git_path_dirname`
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a693b873
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2017-06-07T10:20:44
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buffer: use `git_buf_init` with length
The `git_buf_init` function has an optional length parameter, which will
cause the buffer to be initialized and allocated in one step. This can
be used instead of static initialization with `GIT_BUF_INIT` followed by
a `git_buf_grow`. This patch does so for two functions where it is
applicable.
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4796c916
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2017-06-07T09:56:31
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buffer: return errors for `git_buf_init` and `git_buf_attach`
Both the `git_buf_init` and `git_buf_attach` functions may call
`git_buf_grow` in case they were given an allocation length as
parameter. As such, it is possible for these functions to fail when we
run out of memory. While it won't probably be used anytime soon, it does
indeed make sense to also record this fact by returning an error code
from both functions. As they belong to the internal API only, this
change does not break our interface.
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9a8386a2
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2017-06-07T09:50:54
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buffer: consistently use `ENSURE_SIZE` to grow buffers on-demand
The `ENSURE_SIZE` macro can be used to grow a buffer if its currently
allocated size does not suffice a required target size. While most of
the code already uses this macro, the `git_buf_join` and `git_buf_join3`
functions do not yet use it. Due to the macro first checking whether we
have to grow the buffer at all, this has the benefit of saving a
function call when it is not needed. While this is nice to have, it will
probably not matter at all performance-wise -- instead, this only serves
for consistency across the code.
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e82dd813
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2017-06-08T11:52:32
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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
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97eb5ef0
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2017-06-07T10:05:54
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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.
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3a8801ae
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2017-06-08T10:55:47
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Merge pull request #4258 from pks-t/pks/sha1dc-update
SHA1DC update
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63d86c27
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2017-06-07T14:50:16
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sha1dc: update to fix errors with endianess and unaligned access
This updates our version of SHA1DC to e139984 (Merge pull request #35
from lidl/master, 2017-05-30).
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3bc95cfe
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2017-06-07T14:42:12
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Merge pull request #4236 from pks-t/pks/index-v4-fixes
Fix path computations for compressed index entries
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f28744a5
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2017-06-05T10:11:20
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openssl_stream: fix building with libressl
OpenSSL v1.1 has introduced a new way of initializing the library
without having to call various functions of different subsystems. In
libgit2, we have been adapting to that change with 88520151f
(openssl_stream: use new initialization function on OpenSSL version
>=1.1, 2017-04-07), where we added an #ifdef depending on the OpenSSL
version. This change broke building with libressl, though, which has not
changed its API in the same way.
Fix the issue by expanding the #ifdef condition to use the old way of
initializing with libressl.
Signed-off-by: Marc-Antoine Perennou <Marc-Antoine@Perennou.com>
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064a60e9
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2017-05-19T14:06:15
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index: verify we have enough space left when writing index entries
In our code writing index entries, we carry around a `disk_size`
representing how much memory we have in total and pass this value to
`git_encode_varint` to do bounds checks. This does not make much sense,
as at the time when passing on this variable it is already out of date.
Fix this by subtracting used memory from `disk_size` as we go along.
Furthermore, assert we've actually got enough space left to do the final
path memcpy.
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c71dff7e
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2017-05-19T13:49:34
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index: fix shared prefix computation when writing index entry
When using compressed index entries, each entry's path is preceded by a
varint encoding how long the shared prefix with the previous index entry
actually is. We currently encode a length of `(path_len - same_len)`,
which is doubly wrong. First, `path_len` is already set to `path_len -
same_len` previously. Second, we want to encode the shared prefix rather
than the un-shared suffix length.
Fix this by using `same_len` as the varint value instead.
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83e0392c
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2017-05-19T13:39:05
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index: also sanity check entry size with compressed entries
We have a check in place whether the index has enough data left for the
required footer after reading an index entry, but this was only used for
uncompressed entries. Move the check down a bit so that it is executed
for both compressed and uncompressed index entries.
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350d2c47
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2017-05-19T14:22:35
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index: remove file-scope entry size macros
All index entry size computations are now performed in
`index_entry_size`. As such, we do not need the file-scope macros for
computing these sizes anymore. Remove them and move the `entry_size`
macro into the `index_entry_size` function.
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46b67034
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2017-05-19T13:59:53
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index: don't right-pad paths when writing compressed entries
Our code to write index entries to disk does not check whether the
entry that is to be written should use prefix compression for the path.
As such, we were overallocating memory and added bogus right-padding
into the resulting index entries. As there is no padding allowed in the
index version 4 format, this should actually result in an invalid index.
Fix this by re-using the newly extracted `index_entry_size` function.
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29f498e0
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2017-05-19T13:38:34
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index: move index entry size computation into its own function
Create a new function `index_entry_size` which encapsulates the logic to
calculate how much space is needed for an index entry, whether it is
simple/extended or compressed/uncompressed. This can later be re-used by
our code writing index entries.
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8ceb890b
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2017-05-19T12:35:21
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index: set last written index entry in foreach-entry-loop
The last written disk entry is currently being written inside of the
function `write_disk_entry`. Make behavior a bit more obviously by
instead setting it inside of `write_entries` while iterating all
entries.
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11d0be23
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2017-05-12T10:01:43
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index: set last entry when reading compressed entries
To calculate the path of a compressed index entry, we need to know the
preceding entry's path. While we do actually set the first predecessor
correctly to "", we fail to update this while reading the entries.
Fix the issue by updating `last` inside of the loop. Previously, we've
been passing a double-pointer to `read_entry`, which it didn't update.
As it is more obvious to update the pointer inside the loop itself,
though, we can simply convert it to a normal pointer.
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febe8c14
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2017-05-10T14:27:12
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index: fix confusion with shared prefix in compressed path names
The index version 4 introduced compressed path names for the entries.
From the git.git index-format documentation:
At the beginning of an entry, an integer N in the variable width
encoding [...] is stored, followed by a NUL-terminated string S.
Removing N bytes from the end of the path name for the previous
entry, and replacing it with the string S yields the path name for
this entry.
But instead of stripping N bytes from the previous path's string and
using the remaining prefix, we were instead simply concatenating the
previous path with the current entry path, which is obviously wrong.
Fix the issue by correctly copying the first N bytes of the previous
entry only and concatenating the result with our current entry's path.
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8a5e7aae
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2017-05-22T12:53:44
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varint: fix computation for remaining buffer space
When encoding varints to a buffer, we want to remain sure that the
required buffer space does not exceed what is actually available. Our
current check does not do the right thing, though, in that it does not
honor that our `pos` variable counts the position down instead of up. As
such, we will require too much memory for small varints and not enough
memory for big varints.
Fix the issue by correctly calculating the required size as
`(sizeof(varint) - pos)`. Add a test which failed before.
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dd0aa811
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2017-06-04T22:46:07
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Merge branch 'pr/4228'
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82e929a8
|
2017-06-04T19:35:39
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Merge pull request #4239 from roblg/toplevel-dir-ignore-fix
Fix issue with directory glob ignore in subdirectories
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04de614b
|
2017-06-04T19:03:07
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Merge pull request #4243 from pks-t/pks/submodule-workdir
Submodule working directory
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a1023a43
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2017-05-20T17:18:07
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Merge pull request #4179 from libgit2/ethomson/expand_tilde
Introduce home directory expansion function for config files, attribute files
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9b1260d3
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2017-05-20T14:18:32
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Merge pull request #4097 from implausible/fix/auto-detect-proxy-callbacks
Fix proxy auto detect not utilizing callbacks
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e694e4e9
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2017-05-20T14:17:36
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Merge pull request #4174 from libgit2/ethomson/set_head_to_tag
git_repository_set_head: use tag name in reflog
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119bdd86
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2017-05-20T14:13:27
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Merge pull request #4231 from wabain/open-revrange
revparse: support open-ended ranges
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c0e54155
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2017-01-11T10:39:59
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indexer: name pack files after trailer hash
Upstream git.git has changed the way how packfiles are named.
Previously, they were using a hash of the contained object's OIDs, which
has then been changed to use the hash of the complete packfile instead.
See 1190a1acf (pack-objects: name pack files after trailer hash,
2013-12-05) in the git.git repository for more information on this
change.
This commit changes our logic to match the behavior of core git.
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2696c5c3
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2017-05-19T09:21:17
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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.
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9f9fd05f
|
2017-05-19T08:59:46
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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.
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32841973
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2017-05-19T08:38:47
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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`
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57121a23
|
2017-05-19T08:34:32
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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.
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c3b8e8b3
|
2017-05-14T10:28:05
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|
Fix issue with directory glob ignore in subdirectories
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8d93a11c
|
2017-05-03T12:38:55
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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.
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7776db51
|
2017-05-03T12:15:12
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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.
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8b107dc5
|
2017-05-03T11:20:57
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|
revparse: support open-ended ranges
Support '..' and '...' ranges where one side is not specified.
The unspecified side defaults to HEAD.
Closes #4223
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883eeb5f
|
2017-05-02T12:35:59
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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.
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8264a30f
|
2017-05-02T10:11:28
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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.
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2ce2a48f
|
2017-05-02T13:37:15
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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.
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8c027351
|
2017-05-02T13:35:09
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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.
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a7aa73a5
|
2017-05-02T10:02:36
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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.
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1dc89aab
|
2017-05-01T21:34:21
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object validation: free some memleaks
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34c13106
|
2017-05-01T21:32:24
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signature: free dup'd buffers on parse error
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4dbcf0e6
|
2017-05-01T19:34:04
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remote: free the config snapshot
This reverts commit 5552237 and frees the snapshot properly.
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be343b88
|
2017-05-01T18:56:55
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|
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`.
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13c1bf07
|
2017-05-01T16:17:48
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Merge pull request #4197 from pks-t/pks/verify-object-hashes
Verify object hashes
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d8702843
|
2017-05-01T16:11:56
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Merge pull request #4206 from libgit2/cmn/transport-get-proxy
transport: provide a getter for the proxy options
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5700ee9c
|
2017-05-01T16:10:50
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Merge pull request #4216 from pks-t/pks/debian-test-failures
Debian HTTPS feature test failure
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f86f35d6
|
2017-05-01T15:23:54
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Merge branch 'pr/4225'
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90cdf44f
|
2017-04-29T13:00:07
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Allow NULL refspec in git_remote_push
Since this is allowed in `git_remote_upload`
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55522376
|
2017-04-29T12:28:35
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Do not free config when creating remote
The regression was introduced in 22261344de18b3cc60ee6937468d66a6a6a28875
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e0973bc0
|
2017-04-28T14:05:15
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|
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.
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14109620
|
2017-04-28T14:03:54
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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.
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35079f50
|
2017-04-21T07:31:56
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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.
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28a0741f
|
2017-04-10T09:30:08
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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.
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7df580fa
|
2017-04-28T11:58:49
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Merge pull request #4191 from pks-t/pks/wt-ref-renames
Branch renames with worktrees
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6cf25a39
|
2017-04-26T09:09:53
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|
Merge pull request #4219 from pks-t/pks/socket-stream-addrinfo-loop
socket_stream: continue to next addrinfo on socket creation failure
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cecd41fb
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2017-04-26T09:08:51
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Merge pull request #4217 from pks-t/pks/readonly-cfg-backend
Honor read-only flag when writing to config backends
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954e06a8
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2017-04-26T12:09:57
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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.
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95f29fb3
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2017-04-25T12:40:13
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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.
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64244131
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2017-04-25T12:59:48
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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.
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a4de1ae3
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2017-04-25T10:14:19
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cmake: define GIT_HTTPS when HTTPS is supported
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1cb30b1b
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2017-04-25T09:48:59
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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.
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8d89e409
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2017-04-17T17:19:03
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Merge pull request #4192 from libgit2/ethomson/win32_posix
Refactor some of the win32 POSIX emulation
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86536c7e
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2017-04-17T15:40:03
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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.
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5c760960
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2017-04-17T13:03:03
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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.
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f9d3b0d0
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2017-04-12T09:21:26
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Merge pull request #4201 from pks-t/pks/fileops-fd-leak
fileops: fix leaking fd in `mmap_ro_file`
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38b6e700
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2017-04-12T08:09:08
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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.
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d476d024
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2017-04-11T19:18:05
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Merge pull request #4196 from pks-t/pks/filter-segfault
filter: only close filter if it's been initialized correctly
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88520151
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2017-04-07T13:02:50
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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.
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29081c2f
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2017-04-07T12:54:33
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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.
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cf07db2f
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2017-04-07T16:05:10
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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.
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e572b631
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2017-04-07T09:03:56
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Merge pull request #4183 from pks-t/pks/coverity
Coverity
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2a485dab
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2017-04-04T18:55:57
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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.
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38fc5ab0
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2017-04-04T18:44:43
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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`.
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74511aa2
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2017-04-04T18:44:29
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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.
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3e84aa50
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2017-04-05T13:47:09
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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.
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987f5659
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2017-04-04T17:12:22
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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.
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8242cc1a
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2017-04-04T18:18:45
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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.
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5b65ac25
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2017-04-05T10:43:18
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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.
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89d403cc
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2017-04-05T09:50:12
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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.
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9daba9f4
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2017-03-28T10:12:23
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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.
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756138e4
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2017-03-28T09:15:53
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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`.
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a76d7502
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2017-03-28T09:12:34
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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`.
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cffd616a
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2017-03-28T09:08:41
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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.
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4467aeac
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2017-03-28T09:00:48
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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.
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7ece9065
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2017-04-03T23:07:16
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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.
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1069ad3c
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2017-04-03T23:05:53
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win32: do not inherit file descriptors
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d5e6ca1e
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2017-01-14T18:39:32
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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>
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