Commit Graph

12531 Commits

Author SHA1 Message Date
87aace129e config: pass repo to git_config_get_expiry()
Refactor `git_config_get_expiry()` to accept a `struct repository` such
that we can get rid of the implicit dependency on `the_repository`.
Rename the function accordingly.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-13 10:01:03 -07:00
be7537e6a9 config: pass repo to git_config_get_split_index()
Refactor `git_config_get_split_index()` to accept a `struct repository`
such that we can get rid of the implicit dependency on `the_repository`.
Rename the function accordingly.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-13 10:01:03 -07:00
a973f60dc7 path: stop relying on the_repository in worktree_git_path()
When not provided a worktree, then `worktree_git_path()` will fall back
to returning a path relative to the main repository. In this case, we
implicitly rely on `the_repository` to derive the path. Remove this
dependency by passing a `struct repository` as parameter.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-13 10:01:01 -07:00
78f2210b3c path: stop relying on the_repository when reporting garbage
We access `the_repository` in `report_linked_checkout_garbage()` both
directly and indirectly via `get_git_dir()`. Remove this dependency by
instead passing a `struct repository` as parameter.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-13 10:01:01 -07:00
169c979771 hooks: remove implicit dependency on the_repository
We implicitly depend on `the_repository` in our hook subsystem because
we use `strbuf_git_path()` to compute hook paths. Remove this dependency
by accepting a `struct repository` as parameter instead.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-13 10:01:01 -07:00
4460e052e0 remerge-diff: clean up temporary objdir at a central place
After running a diff between two things, or a series of diffs while
walking the history, the diff computation is concluded by a call to
diff_result_code() to extract the exit status of the diff machinery.

The function can work on "struct diffopt", but all the callers
historically and currently pass "struct diffopt" that is embedded in
the "struct rev_info" that is used to hold the remerge_diff bit and
the remerge_objdir variable that points at the temporary object
directory in use.

Redefine diff_result_code() to take the whole "struct rev_info" to
give it an access to these members related to remerge-diff, so that
it can get rid of the temporary object directory for any and all
callers that used the feature.  We can lose the equivalent code to
do so from the code paths for individual commands, diff-tree, diff,
and log.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-09 15:42:40 -07:00
245cac5c33 remerge-diff: lazily prepare temporary objdir on demand
It is error prone for each caller that sets revs.remerge_diff bit
to be responsible for preparing a temporary object directory and
rotate it into the list of alternate object stores, making it the
primary object store.

Instead, remove the code to set up and arrange the temporary object
directory from the current callers and implement it in the code that
runs remerge-diff logic.  The code to undo the futzing of the list
of alternate object store is still spread across the callers, but we
will deal with it in future steps.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-09 15:42:35 -07:00
e8207717f1 refs: add referent to each_ref_fn
Add a parameter to each_ref_fn so that callers to the ref APIs
that use this function as a callback can have acess to the
unresolved value of a symbolic ref.

Signed-off-by: John Cai <johncai86@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-09 08:47:34 -07:00
a77554ea09 diff-tree: fix crash when used with --remerge-diff
When using "git-diff-tree" to get the tree diff for merge commits with
the diff format set to `remerge`, a bug is triggered as shown below:

  $ git diff-tree -r --remerge-diff 363337e6eb
  363337e6eb
  BUG: log-tree.c:1006: did a remerge diff without remerge_objdir?!?

This bug is reported by `log-tree.c:do_remerge_diff`, where a bug check
added in commit 7b90ab467a (log: clean unneeded objects during log
--remerge-diff, 2022-02-02) detects the absence of `remerge_objdir` when
attempting to clean up temporary objects generated during the remerge
process.

After some further digging, I find that the remerge-related diff options
were introduced in db757e8b8d (show, log: provide a --remerge-diff
capability, 2022-02-02), which also affect the setup of `rev_info` for
"git-diff-tree", but were not accounted for in the original
implementation (inferred from the commit message).

Elijah Newren, the author of the remerge diff feature, notes that other
callers of `log-tree.c:log_tree_commit` (the only caller of
`log-tree.c:do_remerge_diff`) also exist, but:

  `builtin/am.c`: manually sets all flags; remerge_diff is not among them
  `sequencer.c`: manually sets all flags; remerge_diff is not among them

so `builtin/diff-tree.c` really is the only caller that was overlooked
when remerge-diff functionality was added.

This commit resolves the crash by adding `remerge_objdir` setup logic to
`builtin/diff-tree.c`, mirroring `builtin/log.c:cmd_log_walk_no_free`.
It also includes the necessary cleanup for `remerge_objdir`.

Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Xing Xin <xingxin.xx@bytedance.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-09 08:07:44 -07:00
028cf22904 Merge branch 'dd/notes-empty-no-edit-by-default'
"git notes add -m '' --allow-empty" and friends that take prepared
data to create notes should not invoke an editor, but it started
doing so since Git 2.42, which has been corrected.

* dd/notes-empty-no-edit-by-default:
  notes: do not trigger editor when adding an empty note
2024-08-08 10:41:19 -07:00
bf061d26c7 builtin/refs: add verify subcommand
Introduce a new subcommand "verify" in git-refs(1) to allow the user to
check the reference database consistency and also this subcommand will
be used as the entry point of checking refs for "git-fsck(1)".

Add "verbose" field into "fsck_options" to indicate whether we should
print verbose messages when checking refs and objects consistency.

Remove bit-field for "strict" field, this is because we cannot take
address of a bit-field which makes it unhandy to set member variables
when parsing the command line options.

The "git-fsck(1)" declares "fsck_options" variable with "static"
identifier which avoids complaint by the leak-checker. However, in
"git-refs verify", we need to do memory clean manually. Thus add
"fsck_options_clear" function in "fsck.c" to provide memory clean
operation.

Mentored-by: Patrick Steinhardt <ps@pks.im>
Mentored-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: shejialuo <shejialuo@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-08 09:36:53 -07:00
0ec5dfe8c4 fsck: make "fsck_error" callback generic
The "fsck_error" callback is designed to report the objects-related
error messages. It accepts two parameter "oid" and "object_type" which
is not generic. In order to provide a unified callback which can report
either objects or refs, remove the objects-related parameters and add
the generic parameter "void *fsck_report".

Create a new "fsck_object_report" structure which incorporates the
removed parameters "oid" and "object_type". Then change the
corresponding references to adapt to new "fsck_error" callback.

Mentored-by: Patrick Steinhardt <ps@pks.im>
Mentored-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: shejialuo <shejialuo@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-08 09:36:52 -07:00
8cd4a447b8 fsck: rename objects-related fsck error functions
The names of objects-related fsck error functions are generic. It's OK
when there is only object database check. However, we are going to
introduce refs database check report function. To avoid ambiguity,
rename object-related fsck error functions to explicitly indicate these
functions are used to report objects-related messages.

Mentored-by: Patrick Steinhardt <ps@pks.im>
Mentored-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: shejialuo <shejialuo@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-08 09:36:52 -07:00
c369fc46d0 builtin/submodule: allow "add" to use different ref storage format
Same as with "clone", users may want to add a submodule to a repository
with a non-default ref storage format. Wire up a new `--ref-format=`
option that works the same as for `git submodule clone`.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-08 09:22:21 -07:00
69814846ab builtin/clone: propagate ref storage format to submodules
When recursively cloning a repository with a non-default ref storage
format, e.g. by passing the `--ref-format=` option, then only the
top-level repository will end up using that ref storage format, and
all recursively cloned submodules will instead use the default format.

While mixed-format constellations are expected to work alright, the
outcome still is somewhat surprising as we have essentially ignored
the user's request.

Fix this by propagating the requested ref format to cloned submodules.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-08 09:21:39 -07:00
5ac781ad62 builtin/submodule: allow cloning with different ref storage format
As submodules are proper self-contained repositories, it is perfectly
valid for them to have a different ref storage format than their parent
repository. There is no obvious way for users to ask for the ref storage
format when initializing submodules though. Whether the setup of such
mixed-ref-storage-format constellations is all that useful remains to be
seen. But there is no good reason to not expose such an option, and we
will require it in a subsequent patch.

Introduce a new `--ref-format=` option for git-submodule(1) that allows
the user to pick the ref storage format. This option will also be used
in a subsequent commit, where we start to propagate the same flag from
git-clone(1) to cloning submodules with the `--recursive` switch.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-08 09:20:49 -07:00
90b801d8ff Merge branch 'ps/leakfixes-part-3' into ps/leakfixes-part-4
* ps/leakfixes-part-3: (24 commits)
  commit-reach: fix trivial memory leak when computing reachability
  convert: fix leaking config strings
  entry: fix leaking pathnames during delayed checkout
  object-name: fix leaking commit list items
  t/test-repository: fix leaking repository
  builtin/credential-cache: fix trivial leaks
  builtin/worktree: fix leaking derived branch names
  builtin/shortlog: fix various trivial memory leaks
  builtin/rerere: fix various trivial memory leaks
  builtin/credential-store: fix leaking credential
  builtin/show-branch: fix several memory leaks
  builtin/rev-parse: fix memory leak with `--parseopt`
  builtin/stash: fix various trivial memory leaks
  builtin/remote: fix various trivial memory leaks
  builtin/remote: fix leaking strings in `branch_list`
  builtin/ls-remote: fix leaking `pattern` strings
  builtin/submodule--helper: fix leaking buffer in `is_tip_reachable`
  builtin/submodule--helper: fix leaking clone depth parameter
  builtin/name-rev: fix various trivial memory leaks
  builtin/describe: fix trivial memory leak when describing blob
  ...
2024-08-06 12:40:41 -07:00
fcb2205b77 midx: implement support for writing incremental MIDX chains
Now that the rest of the MIDX subsystem and relevant callers have been
updated to learn about how to read and process incremental MIDX chains,
let's finally update the implementation in `write_midx_internal()` to be
able to write incremental MIDX chains.

This new feature is available behind the `--incremental` option for the
`multi-pack-index` builtin, like so:

    $ git multi-pack-index write --incremental

The implementation for doing so is relatively straightforward, and boils
down to a handful of different kinds of changes implemented in this
patch:

  - The `compute_sorted_entries()` function is taught to reject objects
    which appear in any existing MIDX layer.

  - Functions like `write_midx_revindex()` are adjusted to write
    pack_order values which are offset by the number of objects in the
    base MIDX layer.

  - The end of `write_midx_internal()` is adjusted to move
    non-incremental MIDX files when necessary (i.e. when creating an
    incremental chain with an existing non-incremental MIDX in the
    repository).

There are a handful of other changes that are introduced, like new
functions to clear incremental MIDX files that are unrelated to the
current chain (using the same "keep_hash" mechanism as in the
non-incremental case).

The tests explicitly exercising the new incremental MIDX feature are
relatively limited for two reasons:

  1. Most of the "interesting" behavior is already thoroughly covered in
     t5319-multi-pack-index.sh, which handles the core logic of reading
     objects through a MIDX.

     The new tests in t5334-incremental-multi-pack-index.sh are mostly
     focused on creating and destroying incremental MIDXs, as well as
     stitching their results together across layers.

  2. A new GIT_TEST environment variable is added called
     "GIT_TEST_MULTI_PACK_INDEX_WRITE_INCREMENTAL", which modifies the
     entire test suite to write incremental MIDXs after repacking when
     combined with the "GIT_TEST_MULTI_PACK_INDEX" variable.

     This exercises the long tail of other interesting behavior that is
     defined implicitly throughout the rest of the CI suite. It is
     likewise added to the linux-TEST-vars job.

Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-06 12:01:39 -07:00
9552c3595a t: retire 'GIT_TEST_MULTI_PACK_INDEX_WRITE_BITMAP'
Two years ago, commit ff1e653c8e (midx: respect
'GIT_TEST_MULTI_PACK_INDEX_WRITE_BITMAP', 2021-08-31) introduced a new
environment variable which caused the test suite to write MIDX bitmaps
after any 'git repack' invocation.

At the time, this was done to help flush out any bugs with MIDX bitmaps
that weren't explicitly covered in the t5326-multi-pack-bitmap.sh
script.

Two years later, that flag has served us well and is no longer providing
meaningful coverage, as the script in t5326 has matured substantially
and covers many more interesting cases than it did back when ff1e653c8e
was originally written.

Remove the 'GIT_TEST_MULTI_PACK_INDEX_WRITE_BITMAP' environment variable
as it is no longer serving a useful purpose. More importantly, removing
this variable clears the way for us to introduce a new one to help
similarly flush out bugs related to incremental MIDX chains.

Because these incremental MIDX chains are (for now) incompatible with
MIDX bitmaps, we cannot have both.

Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-06 12:01:38 -07:00
b928d57ca9 set errno=0 before strtoX calls
To detect conversion failure after calls to functions like `strtod`, one
can check `errno == ERANGE`. These functions are not guaranteed to set
`errno` to `0` on successful conversion, however. Manual manipulation of
`errno` can likely be avoided by checking that the output pointer
differs from the input pointer, but that's not how other locations, such
as parse.c:139, handle this issue; they set errno to 0 prior to
executing the function.

For every place I could find a strtoX function with an ERANGE check
following it, set `errno = 0;` prior to executing the conversion
function.

Signed-off-by: Kyle Lippincott <spectral@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-05 10:59:20 -07:00
9e89dcb66a builtin/ls-remote: fall back to SHA1 outside of a repo
In c8aed5e8da (repository: stop setting SHA1 as the default object hash,
2024-05-07), we have stopped setting the default hash algorithm for
`the_repository`. Consequently, code that relies on `the_hash_algo` will
now crash when it hasn't explicitly been initialized, which may be the
case when running outside of a Git repository.

It was reported that git-ls-remote(1) may crash in such a way when using
a remote helper that advertises refspecs. This is because the refspec
announced by the helper will get parsed during capability negotiation.
At that point we haven't yet figured out what object format the remote
uses though, so when run outside of a repository then we will fail.

The course of action is somewhat dubious in the first place. Ideally, we
should only parse object IDs once we have asked the remote helper for
the object format. And if the helper didn't announce the "object-format"
capability, then we should always assume SHA256. But instead, we used to
take either SHA1 if there was no repository, or we used the hash of the
local repository, which is wrong.

Arguably though, crashing hard may not be in the best interest of our
users, either. So while the old behaviour was buggy, let's restore it
for now as a short-term fix. We should eventually revisit, potentially
by deferring the point in time when we parse the refspec until after we
have figured out the remote's object hash.

Reported-by: Mike Hommey <mh@glandium.org>
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-02 08:24:05 -07:00
363337e6eb Merge branch 'as/show-ref-option-help-update'
A few descriptions in "git show-ref -h" have been clarified.

* as/show-ref-option-help-update:
  show-ref: improve short help messages of options
2024-08-01 10:18:12 -07:00
145c979020 builtin/credential-cache: fix trivial leaks
There are two trivial leaks in git-credential-cache(1):

  - We leak the child process in `spawn_daemon()`. As we do not call
    `finish_command()` and instead let the created process daemonize, we
    have to clear the process manually.

  - We do not free the computed socket path in case it wasn't given via
    `--socket=`.

Plug both of these memory leaks.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-01 08:47:37 -07:00
cd6d7630fa builtin/worktree: fix leaking derived branch names
There are several heuristics that git-worktree(1) uses to derive the
name of the newly created branch when not given explicitly. These
heuristics all allocate a new string, but we only end up freeing that
string in a subset of cases.

Fix the remaining cases where we didn't yet free the derived branch
names. While at it, also free `opt_track`, which is being populated via
an `OPT_PASSTHRU()`.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-01 08:47:37 -07:00
06da42beec builtin/shortlog: fix various trivial memory leaks
There is a trivial memory leak in git-shortlog(1). Fix it.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-01 08:47:37 -07:00
50ef4e09c3 builtin/rerere: fix various trivial memory leaks
There are multiple trivial memory leaks in git-rerere(1). Fix those.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-01 08:47:37 -07:00
1d615afa8d builtin/credential-store: fix leaking credential
We never free credentials read by the credential store, leading to a
memory leak. Plug it.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-01 08:47:36 -07:00
11d6a81c01 builtin/show-branch: fix several memory leaks
There are several memory leaks in git-show-branch(1). Fix them.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-01 08:47:36 -07:00
2d197e4a0f builtin/rev-parse: fix memory leak with --parseopt
The `--parseopt` mode allows shell scripts to have the same option
parsing mode as we have in C builtins. It soaks up a set of option
descriptions via stdin and massages them into proper `struct option`s
that we can then use to parse a set of arguments.

We only partially free those options when done though, creating a memory
leak. Interestingly, we only end up free'ing the first option's help,
which is of course wrong.

Fix this by freeing all option's help fields as well as their `argh`
fields to plug this memory leak.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-01 08:47:36 -07:00
2e875b6cb4 builtin/stash: fix various trivial memory leaks
There are multiple trivial memory leaks in git-stash(1). Fix those.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-01 08:47:36 -07:00
fc68633352 builtin/remote: fix various trivial memory leaks
There are multiple trivial memory leaks in git-remote(1). Fix those.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-01 08:47:36 -07:00
e06c1d1640 builtin/remote: fix leaking strings in branch_list
The `struct string_list branch_list` is declared as `NODUP`, which makes
it not copy strings inserted into it. This causes memory leaks though,
as this means it also won't be responsible for _freeing_ inserted
strings. Thus, every branch we add to this will leak.

Fix this by marking the list as `DUP` instead and free the local copy we
have of the variable.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-01 08:47:36 -07:00
4119fc08e2 builtin/ls-remote: fix leaking pattern strings
Users can pass patterns to git-ls-remote(1), which allows them to filter
the list of printed references. We assemble those patterns into an array
and prefix them with "*/", but never free either the array nor the
allocated strings.

Refactor the code to use a `struct strvec` instead of manually tracking
the strings in an array. Like this, we can easily use `strvec_clear()`
to release both the vector and the contained string for us, plugging the
leak.

Helped-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-01 08:47:36 -07:00
6771e2012e builtin/submodule--helper: fix leaking buffer in is_tip_reachable
The `rev` buffer in `is_tip_reachable()` is being populated with the
output of git-rev-list(1) -- if either the command fails or the buffer
contains any data, then the input commit is not reachable.

The buffer isn't used for anything else, but neither do we free it,
causing a memory leak. Fix this.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-01 08:47:35 -07:00
5535b3f3d3 builtin/submodule--helper: fix leaking clone depth parameter
The submodule helper supports a `--depth` parameter for both its "add"
and "clone" subcommands, which in both cases end up being forwarded to
git-clone(1). But while the former subcommand uses an `OPT_INTEGER()` to
parse the depth, the latter uses `OPT_STRING()`. Consequently, it is
possible to pass non-integer input to "--depth" when calling the "clone"
subcommand, where the value will then ultimately cause git-clone(1) to
bail out.

Besides the fact that the parameter verification should happen earlier,
the submodule helper infrastructure also internally tracks the depth via
a string. This requires us to convert the integer in the "add"
subcommand into an allocated string, and this string ultimately leaks.

Refactor the code to consistently track the clone depth as an integer.
This plugs the memory leak, simplifies the code and allows us to use
`OPT_INTEGER()` instead of `OPT_STRING()`, validating the input before
we shell out to git--clone(1).

Original-patch-by: Rubén Justo <rjusto@gmail.com>
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-01 08:47:35 -07:00
ac3b143370 builtin/name-rev: fix various trivial memory leaks
There are several structures that we don't release after
`cmd_name_rev()` is done. Plug those leaks.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-01 08:47:35 -07:00
ed041007f0 builtin/describe: fix trivial memory leak when describing blob
We never free the `struct strvec args` variable in `describe_blob()`,
which thus causes a memory leak. Fix this.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-01 08:47:35 -07:00
5a1e1e5d40 builtin/describe: fix leaking array when running diff-index
When running git-describe(1) with `--dirty`, we will set up a `struct
rev_info` with arguments for git-diff-index(1). The way we assemble the
arguments it causes two memory leaks though:

  - We never release the `struct strvec`.

  - `setup_revisions()` may end up removing some entries from the
    `strvec`, which we wouldn't free even if we released the struct.

While we could plug those leaks, this is ultimately unnecessary as the
arguments we pass are part of a static array anyway. So instead,
refactor the code to drop the `struct strvec` and just pass this static
array directly.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-01 08:47:35 -07:00
8e2e28799d builtin/describe: fix memory leak with --contains=
When calling `git describe --contains=`, we end up invoking
`cmd_name_rev()` with some munged argv array. This array may contain
allocated strings and furthermore will likely be modified by the called
function. This results in two memory leaks:

  - First, we leak the array that we use to assemble the arguments.

  - Second, we leak the allocated strings that we may have put into the
    array.

Fix those leaks by creating a separate copy of the array that we can
hand over to `cmd_name_rev()`. This allows us to free all strings
contained in the `strvec`, as the original vector will not be modified
anymore.

Furthermore, free both the `strvec` and the copied array to fix the
first memory leak.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-01 08:47:35 -07:00
7935a02613 builtin/log: fix leaking branch name when creating cover letters
When calling `make_cover_letter()` without a branch name, we try to
derive the branch name by calling `find_branch_name()`. But while this
function returns an allocated string, we never free the result and thus
have a memory leak. Fix this.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-01 08:47:35 -07:00
34968e56de builtin/replay: plug leaking advance_name variable
The `advance_name` variable can either contain a static string when
parsed via the `--advance` command line option or it may be an allocated
string when set via `determine_replay_mode()`. Because we cannot be sure
whether it is allocated or not we just didn't free it at all, resulting
in a memory leak.

Split up the variables such that we can track the static and allocated
strings separately and then free the allocated one to fix the memory
leak.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-01 08:47:34 -07:00
d18eb5ba79 Merge branch 'tn/doc-commit-fix'
Docfix.

* tn/doc-commit-fix:
  doc: remove dangling closing parenthesis
2024-07-31 13:34:20 -07:00
90139ae377 Merge branch 'jc/checkout-no-op-switch-errors'
"git checkout --ours" (no other arguments) complained that the
option is incompatible with branch switching, which is technically
correct, but found confusing by some users.  It now says that the
user needs to give pathspec to specify what paths to checkout.

* jc/checkout-no-op-switch-errors:
  checkout: special case error messages during noop switching
2024-07-31 13:34:18 -07:00
f084c50de6 Merge branch 'ad/merge-with-diff-algorithm'
Many Porcelain commands that internally use the merge machinery
were taught to consistently honor the diff.algorithm configuration.

* ad/merge-with-diff-algorithm:
  merge-recursive: honor diff.algorithm
2024-07-31 13:34:16 -07:00
a6e9429f72 patch-id: tighten code to detect the patch header
The get_one_patchid() function unconditionally takes a line that
matches the patch header (namely, a line that begins with a full
object name, possibly prefixed by "commit" or "From" plus a space)
as the beginning of a patch.  Even when it is *not* looking for one
(namely, when the previous call found the patch header and returned,
and then we are called again to skip the log message and process the
patch whose header was found by the previous invocation).

As a consequence, a line in the commit log message that begins with
one of these patterns can be mistaken to start another patch, with
current message entirely skipped (because we haven't even reached
the patch at all).

Allow the caller to tell us if it called us already and saw the
patch header (in which case we shouldn't be looking for another one,
until we see the "diff" part of the patch; instead we simply should
be skipping these lines as part of the commit log message), and skip
the header processing logic when that is the case.  In the helper
function, it also needs to flip this "are we looking for a header?"
bit, once it finished skipping the commit log message and started
processing the patches, as the patch header of the _next_ message is
the only clue in the input that the current patch is done.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-07-29 18:19:14 -07:00
3f288b6faf patch-id: rewrite code that detects the beginning of a patch
The get_one_patchid() function reads input lines until it finds a
patch header (the line that begins a patch), whose beginning is one
of:

 (1) an "<object name>", which is what "git diff-tree --stdin" shows;
 (2) "commit <object name>", which is what "git log" shows; or
 (3) "From <object name>",  which is what "git log --format=email" shows.

When it finds such a line, it returns to the caller, reporting the
<object name> it found, and the size of the "patch" it processed.

The caller then calls the function again, which then ignores the
commit log message, and then processes the lines in the patch part
until it hits another "beginning of a patch".

The above logic was fairly easy to see until 2bb73ae8 (patch-id: use
starts_with() and skip_prefix(), 2016-05-28) reorganized the code,
which made another logic that has nothing to do with the "where does
the next patch begin?" logic, which came from 2485eab5
(git-patch-id: do not trip over "no newline" markers, 2011-02-17)
that ignores the "\ No newline at the end", rolled into the same
single if() statement.

Let's split it out.  The "\ No newline at the end" marker is part of
the patch, should not appear before we start reading the patch part,
and does not belong to the detection of patch header.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-07-29 18:19:14 -07:00
2438294a13 patch-id: make get_one_patchid() more extensible
We pass two independent Boolean flags (i.e. do we want the stable
variant of patch-id?  do we want to hash the stuff verbatim?) into
the function as two separate parameters.  Before adding the third
one and make the interface even wider, let's consolidate them into
a single flag word.

No changes in behaviour.  Just a trivial interface change.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-07-29 18:19:14 -07:00
c92f3195ad patch-id: call flush_current_id() only when needed
The caller passes a flag that is used to become no-op when calling
flush_current_id().  Instead of calling something that becomes a
no-op, teach the caller not to call it in the first place.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-07-29 18:19:14 -07:00
8b426c84f3 notes: do not trigger editor when adding an empty note
With "git notes add -C $blob", the given blob contents are to be made
into a note without involving an editor.  But when "--allow-empty" is
given, the editor is invoked, which can cause problems for
non-interactive callers[1].

This behaviour started with 90bc19b3ae (notes.c: introduce
'--separator=<paragraph-break>' option, 2023-05-27), which changed
editor invocation logic to check for a zero length note_data buffer.

Restore the original behaviour of "git note" that takes the contents
given via the "-m", "-C", "-F" options without invoking an editor, by
checking for any prior parameter callbacks, indicated by a non-zero
note_data.msg_nr.  Remove the now-unneeded note_data.given flag.

Add a test for this regression by checking whether GIT_EDITOR is
invoked alongside "git notes add -C $empty_blob --allow-empty"

[1] https://github.com/ddiss/icyci/issues/12

Signed-off-by: David Disseldorp <ddiss@suse.de>
[jc: enhanced the test with -m/-F options]
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-07-29 15:31:30 -07:00
9885871248 show-ref: improve short help messages of options
Trivial change to indicate that branches and tags are real options
that can be used combined to get more information.  This helps with
linting translations and prompting the user that the terms represent
options.

Signed-off-by: Alexander Shopov <ash@kambanaria.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-07-25 08:04:34 -07:00