`git fetch --negotiate-only` is an implementation detail of push
negotiation and, unlike most `git fetch` invocations, does not actually
update the main repository. Thus it should not update submodules even
if submodule recursion is enabled.
This is not just slow, it is wrong e.g. push negotiation with
"submodule.recurse=true" will cause submodules to be updated because it
invokes `git fetch --negotiate-only`.
Fix this by disabling submodule recursion if --negotiate-only was given.
Since this makes --negotiate-only and --recurse-submodules incompatible,
check for this invalid combination and die.
This does not use the "goto cleanup" introduced in the previous commit
because we want to recurse through submodules whenever a ref is fetched,
and this can happen without introducing new objects.
Signed-off-by: Glen Choo <chooglen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
cmd_fetch() does the following with the assumption that objects are
fetched:
* Run gc
* Write commit graphs (if enabled by fetch.writeCommitGraph=true)
However, neither of these tasks makes sense if objects are not fetched
e.g. `git fetch --negotiate-only` never fetches objects.
Speed up cmd_fetch() by bailing out early if we know for certain that
objects will not be fetched. cmd_fetch() can bail out early whenever
objects are not fetched, but for now this only considers
--negotiate-only.
The same optimization does not apply to `git fetch --dry-run` because
that actually fetches objects; the dry run refers to not updating refs.
Signed-off-by: Glen Choo <chooglen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Replace an early return with 'goto cleanup' in cmd_fetch() so that the
string_list is always cleared (the string_list_clear() call is purely
cleanup; the string_list is not reused). This makes cleanup consistent
so that a subsequent commit can use 'goto cleanup' to bail out early.
Signed-off-by: Glen Choo <chooglen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git branch -h" incorrectly said "--track[=direct|inherit]",
implying that "--trackinherit" is a valid option, which has been
corrected.
* js/branch-track-inherit:
branch,checkout: fix --track usage strings
FreeBSD 13.0 headers have unconditional dependency on C11 language
features, and adding -std=gnu99 to DEVELOPER_CFLAGS would just
break the developer build.
* jc/freebsd-without-c99-only-build:
Makefile: FreeBSD cannot do C99-or-below build
As Ævar pointed out in [1], the use of PARSE_OPT_LITERAL_ARGHELP with a
list of allowed parameters is not recommended. Both git-branch and
git-checkout were changed in d311566 (branch: add flags and config to
inherit tracking, 2021-12-20) to use this discouraged combination for
their --track flags.
Fix this by removing PARSE_OPT_LITERAL_ARGHELP, and changing the arghelp
to simply be "mode". Users may discover allowed values in the manual
pages.
[1]: https://lore.kernel.org/git/220111.86a6g3yqf9.gmgdl@evledraar.gmail.com/
Signed-off-by: Josh Steadmon <steadmon@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This is a feature that supports config file inclusion conditional on
whether the repo has a remote with a URL that matches a glob.
Similar to my previous work on remote-suggested hooks [1], the main
motivation is to allow remote repo administrators to provide recommended
configs in a way that can be consumed more easily (e.g. through a
package installable by a package manager - it could, for example,
contain a file to be included conditionally and a post-install script
that adds the include directive to the system-wide config file).
In order to do this, Git reruns the config parsing mechanism upon
noticing the first URL-conditional include in order to find all remote
URLs, and these remote URLs are then used to determine if that first and
all subsequent includes are executed. Remote URLs are not allowed to be
configued in any URL-conditionally-included file.
[1] https://lore.kernel.org/git/cover.1623881977.git.jonathantanmy@google.com/
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Acked-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
It is not used from outside the file in which it is declared.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Acked-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In "make DEVELOPER=YesPlease" builds, we try to help developers to
catch as many potential issues as they can by using -Wall and
turning compilation warnings into errors. In the same spirit, we
recently started adding -std=gnu99 to their CFLAGS, so that they can
notice when they accidentally used language features beyond C99.
It however turns out that FreeBSD 13.0 mistakenly uses C11 extension
in its system header files regardless of what __STDC_VERSION__ says,
which means that the platform (unless we tweak their system headers)
cannot be used for this purpose.
It seems that -std=gnu99 is only added conditionally even in today's
config.mak.dev, so it is fine if we dropped -std=gnu99 from there.
Which means that developers on FreeBSD cannot participate in vetting
use of features beyond C99, but there are developers on other
platforms who will, so it's not too bad.
We might want a more "fundamental" fix to make the platform capable
of taking -std=gnu99, like working around the use of unconditional
C11 extension in its system header files by supplying a set of
"replacement" definitions in our header files. We chose not to
pursue such an approach for two reasons at this point:
(1) The fix belongs to the FreeBSD project, not this project, and
such an upstream fix may happen hopefully in a not-too-distant
future.
(2) Fixing such a bug in system header files and working it around
can lead to unexpected breakages (other parts of their system
header files may not be expecting to see and do not work well
with our "replacement" definitions). This close to the final
release of this cycle, we have no time for that.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Adjust build on RHEL 7 to explicitly ask C99 support and use
the fallback implementation of uncompress2 we ship.
* da/rhel7-lacks-uncompress2-and-c99:
build: centos/RHEL 7 ships with an older gcc and zlib
In commit 8b09a900a1 ("merge-ort: restart merge with cached renames to
reduce process entry cost", 2021-07-16), we noted that in the merge-ort
steps of
collect_merge_info()
detect_and_process_renames()
process_entries()
that process_entries() was expensive, and we could often make it cheaper
by changing this to
collect_merge_info()
detect_and_process_renames()
<cache all the renames, and restart>
collect_merge_info()
detect_and_process_renames()
process_entries()
because the second collect_merge_info() would be cheaper (we could avoid
traversing into some directories), the second
detect_and_process_renames() would be free since we had already detected
all renames, and then process_entries() has far fewer entries to handle.
However, this was built on the assumption that the first
detect_and_process_renames() actually detected all potential renames.
If someone has merge.renameLimit set to some small value, that
assumption is violated which manifests later with the following message:
$ git -c merge.renameLimit=1 rebase upstream
...
git: merge-ort.c:546: clear_or_reinit_internal_opts: Assertion
`renames->cached_pairs_valid_side == 0' failed.
Turn off this cache-renames-and-restart whenever we cannot detect all
renames, and add a testcase that would have caught this problem.
Reported-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Tested-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The current way we generate random file names is by taking the seconds
and microseconds, plus the PID, and mixing them together, then encoding
them. If this fails, we increment the value by 7777, and try again up
to TMP_MAX times.
Unfortunately, this is not the best idea from a security perspective.
If we're writing into TMPDIR, an attacker can guess these values easily
and prevent us from creating any temporary files at all by creating them
all first. Even though we set TMP_MAX to 16384, this may be achievable
in some contexts, even if unlikely to occur in practice.
Fortunately, we can simply solve this by using the system
cryptographically secure pseudorandom number generator (CSPRNG) to
generate a random 64-bit value, and use that as before. Note that there
is still a small bias here, but because a six-character sequence chosen
out of 62 characters provides about 36 bits of entropy, the bias here is
less than 2^-28, which is acceptable, especially considering we'll retry
several times.
Note that the use of a CSPRNG in generating temporary file names is also
used in many libcs. glibc recently changed from an approach similar to
ours to using a CSPRNG, and FreeBSD and OpenBSD also use a CSPRNG in
this case. Even if the likelihood of an attack is low, we should still
be at least as responsible in creating temporary files as libc is.
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
There are many situations in which having access to a cryptographically
secure pseudorandom number generator (CSPRNG) is helpful. In the
future, we'll encounter one of these when dealing with temporary files.
To make this possible, let's add a function which reads from a system
CSPRNG and returns some bytes.
We know that all systems will have such an interface. A CSPRNG is
required for a secure TLS or SSH implementation and a Git implementation
which provided neither would be of little practical use. In addition,
POSIX is set to standardize getentropy(2) in the next version, so in the
(potentially distant) future we can rely on that.
For systems which lack one of the other interfaces, we provide the
ability to use OpenSSL's CSPRNG. OpenSSL is highly portable and
functions on practically every known OS, and we know it will have access
to some source of cryptographically secure randomness. We also provide
support for the arc4random in libbsd for folks who would prefer to use
that.
Because this is a security sensitive interface, we take some
precautions. We either succeed by filling the buffer completely as we
requested, or we fail. We don't return partial data because the caller
will almost never find that to be a useful behavior.
Specify a makefile knob which users can use to specify one or more
suitable CSPRNGs, and turn the multiple string options into a set of
defines, since we cannot match on strings in the preprocessor. We allow
multiple options to make the job of handling this in autoconf easier.
The order of options is important here. On systems with arc4random,
which is most of the BSDs, we use that, since, except on MirBSD and
macOS, it uses ChaCha20, which is extremely fast, and sits entirely in
userspace, avoiding a system call. We then prefer getrandom over
getentropy, because the former has been available longer on Linux, and
then OpenSSL. Finally, if none of those are available, we use
/dev/urandom, because most Unix-like operating systems provide that API.
We prefer options that don't involve device files when possible because
those work in some restricted environments where device files may not be
available.
Set the configuration variables appropriately for Linux and the BSDs,
including macOS, as well as Windows and NonStop. We specifically only
consider versions which receive publicly available security support
here. For the same reason, we don't specify getrandom(2) on Linux,
because CentOS 7 doesn't support it in glibc (although its kernel does)
and we don't want to resort to making syscalls.
Finally, add a test helper to allow this to be tested by hand and in
tests. We don't add any tests, since invoking the CSPRNG is not likely
to produce interesting, reproducible results.
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
There are some commands permit the user whether to provide options
first before args, or the reverse order. For example:
git push --dry-run <remote> <ref>
And:
git push <remote> <ref> --dry-run
Both of them is supported, but some commands do not, for instance:
git ls-remote --heads <remote>
And:
git ls-remote <remote> --heads
If <remote> only has one ref and it's name is "refs/heads/--heads", you
will get the same result, otherwise will not.This is because the former
in the second example will parse "--heads" as an "option" which means
to limit to only "refs/heads" when listing the remote references, the
latter treat "--heads" as an argument which means to filter the result
list with the given pattern.
Therefore, we want to specify a bit more in "gitcli.txt" about the way
we recommend and help to resolve the ambiguity around some git command
usage. The related disscussions locate at [1].
By the way, there are some issues with lowercase letters in the document,
which have been modified together.
[1] https://public-inbox.org/git/cover.1642129840.git.dyroneteng@gmail.com/
Signed-off-by: Teng Long <dyroneteng@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In git 2.35 l10n round 1, a space between two words was missing in the
message from "branch.c", and it was fixed by commit 68d924e1de (branch:
missing space fix at line 313, 2022-01-11).
Do a batch update for teams (bg, fr, id, sv, tr and zh_CN) that have
already completed their works on l10n round 1.
Signed-off-by: Jiang Xin <worldhello.net@gmail.com>
-----BEGIN PGP SIGNATURE-----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=ssCO
-----END PGP SIGNATURE-----
Merge tag 'v2.35.0-rc1'
Git 2.35-rc1
* tag 'v2.35.0-rc1':
Git 2.35-rc1
reftable tests: avoid "int" overflow, use "uint64_t"
reftable: avoid initializing structs from structs
t1450-fsck: exec-bit is not needed to make loose object writable
refs API: use "failure_errno", not "errno"
Last minute fixes before -rc1
build: NonStop ships with an older zlib
packfile: fix off-by-one error in decoding logic
t/gpg: simplify test for unknown key
branch: missing space fix at line 313
fmt-merge-msg: prevent use-after-free with signed tags
cache.h: drop duplicate `ensure_full_index()` declaration
lazyload: use correct calling conventions
fetch: fix deadlock when cleaning up lockfiles in async signals
GCC 4.8.5 is the default system compiler on centos7/RHEL7.
This version requires -std=c99 to enable c99 support.
zlib 1.2.7 on centos7/rhel7 lacks uncompress2().
Signed-off-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
A few portability tweaks.
* ab/reftable-build-fixes:
reftable tests: avoid "int" overflow, use "uint64_t"
reftable: avoid initializing structs from structs
"pull --rebase" internally uses the merge machinery when the other
history is a descendant of ours (i.e. perform fast-forward). This
came from [1], where the discussion was started from a feature
request to do so. It is a bit hard to read the rationale behind it
in the discussion, but it seems that it was an established fact for
everybody involved that does not even need to be mentioned that
fast-forwarding done with "rebase" was much undesirable than done
with "merge", and more importantly, the result left by "merge" is as
good as (or better than) that by "rebase".
Except for one thing. Because "git merge" does not (and should not)
honor rebase.autostash, "git pull" needs to read it and forward it
when we use "git merge" as a (hopefully better) substitute for "git
rebase" during the fast-forwarding. But we forgot to do so (we only
add "--[no-]autostash" to the "git merge" command when "git pull" itself
was invoked with "--[no-]autostash" command line option.
Make sure "git merge" is run with "--autostash" when
rebase.autostash is set and used to fast-forward the history on
behalf of "git rebase". Incidentally this change also takes care of
the case where
- "git pull --rebase" (without other command line options) is run
- "rebase.autostash" is not set
- The history fast-forwards
In such a case, "git merge" is run with an explicit "--no-autostash"
to prevent it from honoring merge.autostash configuration, which is
what we want. After all, we want the "git merge" to pretend as if
it is "git rebase" while being used for this purpose.
[1] https://lore.kernel.org/git/xmqqa8cfbkeq.fsf_-_@gitster.mtv.corp.google.com/
Reported-by: Tilman Vogel <tilman.vogel@web.de>
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Philippe Blain <levraiphilippeblain@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Change code added in 1ae2b8cda8 (reftable: add merged table view,
2021-10-07) to consistently use the "uint64_t" type. These "min" and
"max" variables get passed in the body of this function to a function
whose prototype is:
[...] reftable_writer_set_limits([...], uint64_t min, uint64_t max
This avoids the following warning on SunCC 12.5 on
gcc211.fsffrance.org:
"reftable/merged_test.c", line 27: warning: initializer does not fit or is out of range: 0xffffffff
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Apparently, the IBM xlc compiler doesn't like this.
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
A test case wants to append stuff to a loose object file to ensure
that this kind of corruption is detected. To make a read-only loose
object file writable with chmod, it is not necessary to also make
it executable. Replace the bitmask 755 with the instruction +w to
request only the write bit and to also heed the umask. And get rid
of a POSIXPERM prerequisite, which is unnecessary for the test.
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Fix a logic error in refs_resolve_ref_unsafe() introduced in a recent
series of mine to abstract the refs API away from errno. See
96f6623ada (Merge branch 'ab/refs-errno-cleanup', 2021-11-29)for that
series.
In that series introduction of "failure_errno" to
refs_resolve_ref_unsafe came in ef18119dec (refs API: add a version
of refs_resolve_ref_unsafe() with "errno", 2021-10-16). There we'd set
"errno = 0" immediately before refs_read_raw_ref(), and then set
"failure_errno" to "errno" if errno was non-zero afterwards.
Then in the next commit 8b72fea7e9 (refs API: make
refs_read_raw_ref() not set errno, 2021-10-16) we started expecting
"refs_read_raw_ref()" to set "failure_errno". It would do that if
refs_read_raw_ref() failed, but it wouldn't be the same errno.
So we might set the "errno" here to any arbitrary bad value, and end
up e.g. returning NULL when we meant to return the refname from
refs_resolve_ref_unsafe(), or the other way around. Instrumenting this
code will reveal cases where refs_read_raw_ref() will fail, and
"errno" and "failure_errno" will be set to different values.
In practice I haven't found a case where this scary bug changed
anything in practice. The reason for that is that we'll not care about
the actual value of "errno" here per-se, but only whether:
1. We have an errno
2. If it's one of ENOENT, EISDIR or ENOTDIR. See the adjacent code
added in a1c1d8170d (refs_resolve_ref_unsafe: handle d/f
conflicts for writes, 2017-10-06)
I.e. if we clobber "failure_errno" with "errno", but it happened to be
one of those three, and we'll clobber it with another one of the three
we were OK.
Perhaps there are cases where the difference ended up mattering, but I
haven't found them. Instrumenting the test suite to fail if "errno"
and "failure_errno" are different shows a lot of failures, checking if
they're different *and* one is but not the other is outside that list
of three "errno" values yields no failures.
But let's fix the obvious bug. We should just stop paying attention to
"errno" in refs_resolve_ref_unsafe(). In addition let's change the
partial resetting of "errno" in files_read_raw_ref() to happen just
before the "return", to ensure that any such bug will be more easily
spotted in the future.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
- Translate new messages
- Translate the word 'cone' instead of leaving it verbatim
(in the context of sparse checkout)
- Make translations of 'failed to' consistent
Signed-off-by: Fangyi Zhou <me@fangyi.io>
Reviewed-by: Teng Long <dyroneteng@gmail.com>
Reviewed-by: 依云 <lilydjwg@gmail.com>
Reviewed-by: Jiang Xin <worldhello.net@gmail.com>
Some lockfile code called free() in signal-death code path, which
has been corrected.
* ps/lockfile-cleanup-fix:
fetch: fix deadlock when cleaning up lockfiles in async signals
"git merge $signed_tag" started to drop the tag message from the
default merge message it uses by accident, which has been corrected.
* fs/ssh-signing-key-lifetime:
fmt-merge-msg: prevent use-after-free with signed tags
Notably, it lacks uncompress2(); use the fallback we ship in our
tree instead.
Signed-off-by: Randall S. Becker <rsbecker@nexbridge.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
shift count being exactly at 7-bit smaller than the long is OK; on
32-bit architecture, shift count starts at 4 and goes through 11, 18
and 25, at which point the guard triggers one iteration too early.
Reported-by: Marc Strapetz <marc.strapetz@syntevo.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
To test for a key that is completely unknown to the keyring we need one
to sign the commit with. This was done by generating a new key and not
add it into the keyring. To avoid the key generation overhead and
problems where GPG did hang in CI during it, switch GNUPGHOME to the
empty $GNUPGHOME_NOT_USED instead, therefore making all used keys unknown
for this single `verify-commit` call.
Reported-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Fabian Stelzer <fs@gigacodes.de>
Reviewed-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The message introduced by commit 593a2a5d06 (branch: protect branches
checked out in all worktrees, 2021-12-01) is missing a space in the
first line, add it.
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The C reimplementation of "add -p" fails to split the last hunk in a
file if hunk ends with an addition or deletion without any post context
line unless it is the last file to be processed.
To determine whether a hunk can be split a counter is incremented each
time a context line follows an insertion or deletion. If at the end of
the hunk the value of this counter is greater than one then the hunk
can be split into that number of smaller hunks. If the last hunk in a
file ends with an insertion or deletion then there is no following
context line and the counter will not be incremented. This case is
already handled at the end of the loop where counter is incremented if
the last hunk ended with an insertion or deletion. Unfortunately there
is no similar check between files (likely because the perl version
only ever parses one diff at a time). Fix this by checking if the last
hunk ended with an insertion or deletion when we see the diff header
of a new file and extend the existing regression test.
Reproted-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Clean up some test constructs in preparation for extending the tests
in the next commit. There are three small changes, I've grouped them
together as they're so small it didn't seem worth creating three
separate commits.
1 - "cat file | sed expression" is better written as
"sed expression file".
2 - Follow our usual practice of redirecting the output of git
commands to a file rather than piping it into another command.
3 - Use test_write_lines rather than 'printf "%s\n"'.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The documentation for the eol attribute states that it is "effectively
setting the text attribute". However, this implies that it forces the
text attribute to always be set, which has not been the case since
6523728499 ("convert: unify the "auto" handling of CRLF", 2016-06-28).
Let's avoid confusing users (and the present author when trying to
describe Git's behavior to others) by clearly documenting in which
cases the "eol" attribute has effect.
Specifically, the attribute always has an effect unless the file is
explicitly set as -text, or the file is set as text=auto and the file is
detected as binary.
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
