|
c6e84bce
|
2020-04-05T09:49:28
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|
apply: use GIT_ASSERT
|
|
d0656ac8
|
2020-06-27T12:15:26
|
|
Make the tests run cleanly under UndefinedBehaviorSanitizer
This change makes the tests run cleanly under
`-fsanitize=undefined,nullability` and comprises of:
* Avoids some arithmetic with NULL pointers (which UBSan does not like).
* Avoids an overflow in a shift, due to an uint8_t being implicitly
converted to a signed 32-bit signed integer after being shifted by a
32-bit signed integer.
* Avoids a unaligned read in libgit2.
* Ignores unaligned reads in the SHA1 library, since it only happens on
Intel processors, where it is _still_ undefined behavior, but the
semantics are moderately well-understood.
Of notable omission is `-fsanitize=integer`, since there are lots of
warnings in zlib and the SHA1 library which probably don't make sense to
fix and I could not figure out how to silence easily. libgit2 itself
also has ~100s of warnings which are mostly innocuous (e.g. use of enum
constants that only fit on an `uint32_t`, but there is no way to do that
in a simple fashion because the data type chosen for enumerated types is
implementation-defined), and investigating whether there are worrying
warnings would need reducing the noise significantly.
|
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0f35efeb
|
2020-05-23T10:15:51
|
|
git_pool_init: handle failure cases
Propagate failures caused by pool initialization errors.
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|
cd5e33fb
|
2019-11-06T11:08:23
|
|
global: DRY includes of assert.h
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|
02af1fcb
|
2019-09-14T14:03:36
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|
apply: add GIT_APPLY_CHECK
This adds an option which will check if a diff is applicable without
actually applying it; equivalent to git apply --check.
|
|
|
c3a7892f
|
2019-09-09T13:10:24
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|
Merge pull request #5209 from mkostyuk/apply-wrong-patch
apply: Fix a patch corruption related to EOFNL handling
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|
de4bc2bd
|
2019-08-20T03:29:45
|
|
apply: git_apply_to_tree fails to apply patches that add new files
git_apply_to_tree() cannot be used apply patches with new files. An attempt
to apply such a patch fails because git_apply_to_tree() tries to remove a
non-existing file from an old index.
The solution is to modify git_apply_to_tree() to git_index_remove() when the
patch states that the modified files is removed.
|
|
|
630127e3
|
2019-08-20T03:08:32
|
|
apply: Fix a patch corruption related to EOFNL handling
Use of apply's API can lead to an improper patch application and a corruption
of the modified file.
The issue is caused by mishandling of the end of file changes if there are
several hunks to apply. The new line character is added to a line from a wrong
hunk.
The solution is to modify apply_hunk() to add the newline character at the end
of a line from a right hunk.
|
|
63d8cd18
|
2019-06-16T11:17:17
|
|
apply: remove use of variadic error macro
The macro `apply_err` is implemented as a variadic macro, which
are not defined by C89. Convert it to a variadic function,
instead.
|
|
|
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.
|
|
b0893282
|
2019-07-11T12:12:04
|
|
patch_parse: ensure valid patch output with EOFNL
|
|
|
b30dab8f
|
2019-07-11T12:10:48
|
|
apply: refactor to use a switch statement
|
|
|
08f39208
|
2019-06-08T17:46:04
|
|
blob: add underscore to `from` functions
The majority of functions are named `from_something` (with an
underscore) instead of `fromsomething`. Update the blob functions for
consistency with the rest of the library.
|
|
|
c0dd7122
|
2019-06-06T16:48:04
|
|
apply: add an options struct initializer
|
|
|
4069f924
|
2019-02-22T10:56:08
|
|
Merge pull request #4901 from pks-t/pks/uniform-map-api
High-level map APIs
|
|
|
014d4955
|
2019-02-20T15:30:11
|
|
apply: prevent OOB read when parsing source buffer
When parsing the patch image from a string, we split the string
by newlines to get a line-based view of it. To split, we use
`memchr` on the buffer and limit the buffer length by the
original length provided by the caller. This works just fine for
the first line, but for every subsequent line we need to actually
subtract the amount of bytes that we have already read.
The above issue can be easily triggered by having a source buffer
with at least two lines, where the second line does _not_ end in
a newline. Given a string "foo\nb", we have an original length of
five bytes. After having extracted the first line, we will point
to 'b' and again try to `memchr(p, '\n', 5)`, resulting in an
out-of-bounds read of four bytes.
Fix the issue by correctly subtracting the amount of bytes
already read.
|
|
|
c50a8ac2
|
2018-12-01T08:59:24
|
|
maps: use high-level function to check existence of keys
Some callers were still using the tightly-coupled pattern of `lookup_index` and
`valid_index` to verify that an entry exists in a map. Instead, use the more
high-level `exists` functions to decouple map users from its implementation.
|
|
|
03555830
|
2019-01-23T10:44:33
|
|
strmap: introduce high-level setter for key/value pairs
Currently, one would use the function `git_strmap_insert` to insert key/value
pairs into a map. This function has historically been a macro, which is why its
syntax is kind of weird: instead of returning an error code directly, it instead
has to be passed a pointer to where the return value shall be stored. This does
not match libgit2's common idiom of directly returning error codes.
Introduce a new function `git_strmap_set`, which takes as parameters the map,
key and value and directly returns an error code. Convert all callers of
`git_strmap_insert` to make use of it.
|
|
|
351eeff3
|
2019-01-23T10:42:46
|
|
maps: use uniform lifecycle management functions
Currently, the lifecycle functions for maps (allocation, deallocation, resize)
are not named in a uniform way and do not have a uniform function signature.
Rename the functions to fix that, and stick to libgit2's naming scheme of saying
`git_foo_new`. This results in the following new interface for allocation:
- `int git_<t>map_new(git_<t>map **out)` to allocate a new map, returning an
error code if we ran out of memory
- `void git_<t>map_free(git_<t>map *map)` to free a map
- `void git_<t>map_clear(git<t>map *map)` to remove all entries from a map
This commit also fixes all existing callers.
|
|
|
ae681d3f
|
2019-01-21T00:49:07
|
|
apply: make update_hunk accept a size_t
|
|
|
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.
|
|
|
8b599528
|
2019-01-08T17:26:14
|
|
Fix Linux warnings
This change fixes -Wmaybe-uninitialized and -Wdeprecated-declarations
warnings on Linux builds
|
|
|
646a94be
|
2018-11-18T23:15:56
|
|
Merge pull request #4847 from noahp/noahp/null-arg-fixes
tests: 🌀 address two null argument instances
|
|
f127ce35
|
2018-11-13T08:22:25
|
|
tests: address two null argument instances
Handle two null argument cases that occur in the unit tests.
One is in library code, the other is in test code.
Detected by running unit tests with undefined behavior sanitizer:
```bash
# build
mkdir build && cd build
cmake -DBUILD_CLAR=ON -DCMAKE_C_FLAGS="-fsanitize=address \
-fsanitize=undefined -fstack-usage -static-libasan" ..
cmake --build .
# run with asan
ASAN_OPTIONS="allocator_may_return_null=1" ./libgit2_clar
...
............../libgit2/src/apply.c:316:3: runtime error: null pointer \
passed as argument 1, which is declared to never be null
...................../libgit2/tests/apply/fromfile.c:46:3: runtime \
error: null pointer passed as argument 1, which is declared to never be null
```
|
|
|
f8b9493b
|
2018-11-05T15:46:08
|
|
apply: test re-adding a file after removing it
Ensure that we can add a file back after it's been removed. Update the
renamed/deleted validation in application to not apply to deltas that
are adding files to support this.
|
|
|
78580ad3
|
2018-11-05T15:34:59
|
|
apply: test modifying a file after renaming it
Ensure that we cannot modify a file after it's been renamed out of the
way. If multiple deltas exist for a single path, ensure that we do not
attempt to modify a file after it's been renamed out of the way.
To support this, we must track the paths that have been removed or
renamed; add to a string map when we remove a path and remove from the
string map if we recreate a path. Validate that we are not applying to
a path that is in this map, unless the delta is a rename, since git
supports renaming one file to two different places in two different
deltas.
Further, test that we cannot apply a modification delta to a path that
will be created in the future by a rename (a path that does not yet
exist.)
|
|
|
df4258ad
|
2018-11-04T13:01:03
|
|
apply: handle multiple deltas to the same file
git allows a patch file to contain multiple deltas to the same file:
although it does not produce files in this format itself, this could
be the result of concatenating two different patch files that affected
the same file.
git apply behaves by applying this next delta to the existing postimage
of the file. We should do the same. If we have previously seen a file,
and produced a postimage for it, we will load that postimage and apply
the current delta to that. If we have not, get the file from the
preimage.
|
|
|
6fecf4d1
|
2018-11-04T11:47:46
|
|
apply: handle exact renames
Deltas containing exact renames are special; they simple indicate that a
file was renamed without providing additional metadata (like the
filemode). Teach the reader to provide the file mode and use the
preimage's filemode in the case that the delta does not provide one.)
|
|
|
47cc5f85
|
2018-09-29T19:32:51
|
|
apply: introduce a hunk callback
Introduce a callback to patch application that allows consumers to
cancel hunk application.
|
|
|
af33210b
|
2018-07-10T16:10:03
|
|
apply: introduce a delta callback
Introduce a callback to the application options that allow callers to
add a per-delta callback. The callback can return an error code to stop
patch application, or can return a value to skip the application of a
particular delta.
|
|
|
37b25ac5
|
2018-07-08T16:12:58
|
|
apply: move location to an argument, not the opts
Move the location option to an argument, out of the options structure.
This allows the options structure to be re-used for functions that don't
need to know the location, since it's implicit in their functionality.
For example, `git_apply_tree` should not take a location, but is
expected to take all the other options.
|
|
|
2d27ddc0
|
2018-07-01T21:35:51
|
|
apply: use an indexwriter
Place the entire `git_apply` operation inside an indexwriter, so that we
lock the index before we begin performing patch application. This
ensures that there are no other processes modifying things in the
working directory.
|
|
|
813f0802
|
2018-07-01T15:14:36
|
|
apply: validate workdir contents match index for BOTH
When applying to both the index and the working directory, ensure that
the index contents match the working directory. This mirrors the
requirement in `git apply --index`.
This also means that - along with the prior commit that uses the working
directory contents as the checkout baseline - we no longer expect
conflicts during checkout. So remove the special-case error handling
for checkout conflicts. (Any checkout conflict now would be because the
file was actually modified between the start of patch application and
the checkout.)
|
|
|
0f4b2f02
|
2018-07-01T15:13:50
|
|
reader: optionally validate index matches workdir
When using a workdir reader, optionally validate that the index contents
match the working directory contents.
|
|
|
5b8d5a22
|
2018-07-01T13:42:53
|
|
apply: use preimage as the checkout baseline
Use the preimage as the checkout's baseline. This allows us to support
applying patches to files that are modified in the working directory
(those that differ from the HEAD and index). Without this, files will
be reported as (checkout) conflicts. With this, we expect the on-disk
data when we began the patch application (the "preimage") to be on-disk
during checkout.
We could have also simply used the `FORCE` flag to checkout to
accomplish a similar mechanism. However, `FORCE` ignores all
differences, while providing a preimage ensures that we will only
overwrite the file contents that we actually read.
Modify the reader interface to provide the OID to support this.
|
|
|
dddfff77
|
2018-06-30T17:12:16
|
|
apply: convert checkout conflicts to apply failures
When there's a checkout conflict during apply, that means that the
working directory was modified in a conflicting manner and the postimage
cannot be written. During application, convert this to an application
failure for consistency across workdir/index/both applications.
|
|
|
5b66b667
|
2018-06-29T12:39:41
|
|
apply: when preimage file is missing, return EAPPLYFAIL
The preimage file being missing entirely is simply a case of an
application failure; return the correct error value for the caller.
|
|
|
e0224121
|
2018-06-29T12:09:02
|
|
apply: simplify checkout vs index application
Separate the concerns of applying via checkout and updating the
repository's index. This results in simpler functionality and allows us
to not build the temporary collection of paths in the index case.
|
|
|
20f8a6db
|
2018-06-28T17:26:21
|
|
apply: remove deleted paths from index
We update the index with the new_file side of the delta, but we need to
explicitly remove the old_file path in the case where an item was
deleted or renamed.
|
|
|
c3077ea0
|
2018-06-25T21:24:49
|
|
apply: return a specific exit code on failure
Return `GIT_EAPPLYFAIL` on patch application failure so that users can
determine that patch application failed due to a malformed/conflicting
patch by looking at the error code.
|
|
|
9c34c996
|
2018-06-25T17:03:14
|
|
apply: handle file additions
Don't attempt to read the postimage file during a file addition, simply
use an empty buffer as the postimage. Also, test that we can handle
file additions.
|
|
|
3b5378c5
|
2018-06-25T16:27:06
|
|
apply: handle file deletions
If the file was deleted in the postimage, do not attempt to update the
target. Instead, ignore it and simply allow it to stay removed in our
computed postimage. Also, test that we can handle file deletions.
|
|
|
f83bbe0a
|
2018-03-19T19:50:45
|
|
apply: introduce `git_apply`
Introduce `git_apply`, which will take a `git_diff` and apply it to the
working directory (akin to `git apply`), the index (akin to `git apply
--cached`), or both (akin to `git apply --index`).
|
|
|
664cda6f
|
2018-03-19T20:10:38
|
|
apply: reimplement `git_apply_tree` with readers
The generic `git_reader` interface simplifies `git_apply_tree` somewhat.
Reimplement `git_apply_tree` with them.
|
|
|
02b1083a
|
2018-01-28T23:25:07
|
|
apply: introduce `git_apply_tree`
Introduce `git_apply_tree`, which will apply a `git_diff` to a given
`git_tree`, allowing an in-memory patch application for a repository.
|
|
|
ecf4f33a
|
2018-02-08T11:14:48
|
|
Convert usage of `git_buf_free` to new `git_buf_dispose`
|
|
|
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.
|
|
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
|
|
|
c77a55a9
|
2016-11-14T10:05:31
|
|
common: use PRIuZ for size_t in `giterr_set` calls
|
|
|
adedac5a
|
2016-09-02T02:03:45
|
|
diff: treat binary patches with no data special
When creating and printing diffs, deal with binary deltas that have
binary data specially, versus diffs that have a binary file but lack the
actual binary data.
|
|
|
274a727e
|
2016-08-05T10:57:42
|
|
apply: fix warning when initializing patch images
|
|
|
581a4d39
|
2016-07-14T23:32:35
|
|
apply: safety check files that dont end with eol
|
|
|
531be3e8
|
2016-07-14T22:59:37
|
|
apply: compare preimage to image
Compare the preimage to the image; don't compare the preimage to itself.
|
|
|
53571f2f
|
2015-11-21T15:16:01
|
|
vector: more sensible names for `grow_at`/`shrink_at`
|
|
0267c34c
|
2015-09-25T10:19:50
|
|
patch application: drop unnecessary `patch_image_init`
|
|
|
b85bd8ce
|
2015-09-16T11:37:03
|
|
patch: use delta's old_file/new_file members
No need to replicate the old_file/new_file members, or plumb them
strangely up.
|
|
|
804d5fe9
|
2015-09-11T08:37:12
|
|
patch: abstract patches into diff'ed and parsed
Patches can now come from a variety of sources - either internally
generated (from diffing two commits) or as the results of parsing
some external data.
|
|
|
3149ff6f
|
2015-06-17T18:13:10
|
|
patch application: apply binary patches
Handle the application of binary patches. Include tests that
produce a binary patch (an in-memory `git_patch` object),
then enusre that the patch applies correctly.
|
|
|
0004386f
|
2015-06-17T06:03:01
|
|
apply: handle empty patches
When a patch is empty, simply copy the source into the destination.
|
|
|
7cb904ba
|
2014-04-01T23:58:59
|
|
Introduce git_apply_patch
The beginnings of patch application from an existing (diff-created)
git_patch object: applies the hunks of a git_patch to a buffer.
|