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7968e90f
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2019-10-18T12:33:07
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refdb_fs: properly parse corrupted reflogs
In previous versions, libgit2 could be coerced into writing reflog
messages with embedded newlines into the reflog by using
`git_stash_save` with a message containing newlines. While the root
cause is fixed now, it was noticed that upstream git is in fact able to
read such corrupted reflog messages just fine.
Make the reflog parser more lenient in order to just skip over
malformatted reflog lines to bring us in line with git. This requires us
to change an existing test that verified that we do indeed _fail_ to
parse such logs.
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d8233feb
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2019-10-18T09:24:14
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reflog: allow adding entries with newlines in their message
Currently, the reflog disallows any entries that have a message with
newlines, as that would effectively break the reflog format, which may
contain a single line per entry, only. Upstream git behaves a bit
differently, though, especially when considering stashes: instead of
rejecting any reflog entry with newlines, git will simply replace
newlines with spaces. E.g. executing 'git stash push -m "foo\nbar"' will
create a reflog entry with "foo bar" as entry message.
This commit adjusts our own logic to stop rejecting commit messages with
newlines. Previously, this logic was part of `git_reflog_append`, only.
There is a second place though where we add reflog entries, which is the
serialization code in the filesystem refdb. As it didn't contain any
sanity checks whatsoever, the refdb would have been perfectly happy to
write malformatted reflog entries to the disk. This is being fixed with
the same logic as for the reflog itself.
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e54343a4
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2019-06-29T09:17:32
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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.
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f673e232
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2018-12-27T13:47:34
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git_error: use new names in internal APIs and usage
Move to the `git_error` name in the internal API for error-related
functions.
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e226ad8f
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2018-11-17T17:55:10
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refs: add support for core.logAllRefUpdates=always
Since we were not expecting this config entry to contain a string, we
would fail as soon as its (cached) value would be accessed. Hence,
provide some constants for the 4 states we use, and account for "always"
when we decide to reflog changes.
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9994cd3f
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2018-06-25T11:56:52
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treewide: remove use of C++ style comments
C++ style comment ("//") are not specified by the ISO C90 standard and
thus do not conform to it. While libgit2 aims to conform to C90, we did
not enforce it until now, which is why quite a lot of these
non-conforming comments have snuck into our codebase. Do a tree-wide
conversion of all C++ style comments to the supported C style comments
to allow us enforcing strict C90 compliance in a later commit.
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ecf4f33a
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2018-02-08T11:14:48
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Convert usage of `git_buf_free` to new `git_buf_dispose`
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53672128
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2017-07-21T17:35:30
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tests: gather the reflog entry content tests
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397cf1a1
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2017-02-28T22:22:02
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Add test for inclusion of (merge) in reflog
This test ensures that the string '(merge)' is included in the reflog
when a merge commit is made.
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8f0d5cde
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2016-12-29T12:55:49
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tests: update error message checking
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0a700ee3
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2015-11-03T17:34:54
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reflog: error when a directory is at reflog path
When a non-empty directory exists and prevents the creation of a
reflog, provide a more informative error message.
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2d556f31
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2015-11-03T14:48:31
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reflog: test reflog is deleted when ref is deleted
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335c9e2f
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2015-10-26T15:33:00
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Prevent segfault when parsing a reflog with oid parse error
Using calloc instead of malloc because the parse error will lead to an immediate free of committer (and its properties, which can segfault on free if undefined - test_refs_reflog_reflog__reading_a_reflog_with_invalid_format_returns_error segfaulted before the fix).
#3458
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659cf202
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2015-01-07T12:23:05
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Remove the signature from ref-modifying functions
The signature for the reflog is not something which changes
dynamically. Almost all uses will be NULL, since we want for the
repository's default identity to be used, making it noise.
In order to allow for changing the identity, we instead provide
git_repository_set_ident() and git_repository_ident() which allow a user
to override the choice of signature.
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83504371
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2014-03-19T22:27:23
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reflog: follow core.logallrefupdates
On bare by default, or when core.logallrefupdates is false, we must not
write the reflog.
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1afe1400
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2014-03-18T22:16:58
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refdb: don't update when there's no need
If the caller wants to update a ref to point to the same target as it
currently has, we should return early and avoid writing to the reflog.
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4b7e1b9e
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2014-01-15T13:19:48
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refs: append to the HEAD reflog when updating the current branch
When we update the current branch, we must also append to HEAD's reflog
to keep them in sync.
This is a bit of a hack, but as git.git says, it covers 100% of
default cases.
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ccf6ce5c
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2014-01-28T11:30:36
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Ensure renaming a reference updates the reflog
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0b28217b
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2014-01-15T12:51:31
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refs: remove the _with_log differentiation
Any well-behaved program should write a descriptive message to the
reflog whenever it updates a reference. Let's make this more prominent
by removing the version without the reflog parameters.
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f2105129
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2013-11-23T14:39:53
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refs: expose has_log() on the backend
The frontend used to look at the file directly, but that's obviously not
the right thing to do. Expose it on the backend and use that function
instead.
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8d5ec910
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2013-11-23T14:13:01
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refs: expose a way to ensure a ref has a log
Sometimes (e.g. stash) we want to make sure that a log will be written,
even if it's not in one of the standard locations. Let's make that
easier.
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6f13a305
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2013-11-17T23:26:49
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reflog: write to the reflog following git's rules
git-core only writes to the reflogs of HEAD, refs/heads/ and,
refs/notes/ or if there is already a reflog in place. Adjust our code to
follow these semantics.
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13c9e44a
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2013-11-14T19:41:09
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reflog: remove git_reflog_append_to()
This was a convenience method for the refs front-end to do the reflog
writing. This is now done in the backend and it has no more reason for
being.
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a57dd3b7
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2013-11-13T18:15:20
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reflog: integrate into the ref writing
Whenever a reference is created or updated, we need to write to the
reflog regardless of whether the user gave us a message, so we shouldn't
leave that to the ref frontend, but integrate it into the backend.
This also eliminates the race between ref update and writing to the
reflog, as we protect the reflog with the ref lock.
As an additional benefit, this reflog append on the backend happens by
appending to the file instead of parsing and rewriting it.
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17820381
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2013-11-14T14:05:52
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Rename tests-clar to tests
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