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10856 commits

Author SHA1 Message Date
Ævar Arnfjörð Bjarmason 2f6b1eb794 cache API: add a "INDEX_STATE_INIT" macro/function, add release_index()
Hopefully in some not so distant future, we'll get advantages from always
initializing the "repo" member of the "struct index_state". To make
that easier let's introduce an initialization macro & function.

The various ad-hoc initialization of the structure can then be changed
over to it, and we can remove the various "0" assignments in
discard_index() in favor of calling index_state_init() at the end.

While not strictly necessary, let's also change the CALLOC_ARRAY() of
various "struct index_state *" to use an ALLOC_ARRAY() followed by
index_state_init() instead.

We're then adding the release_index() function and converting some
callers (including some of these allocations) over to it if they
either won't need to use their "struct index_state" again, or are just
about to call index_state_init().

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Acked-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-01-16 10:46:58 -08:00
Ævar Arnfjörð Bjarmason 0dda3ac925 builtin/difftool.c: { 0 }-initialize rather than using memset()
Refactor an initialization of a variable added in
03831ef7b5 (difftool: implement the functionality in the builtin,
2017-01-19). This refactoring makes a subsequent change smaller.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Acked-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-01-13 10:36:57 -08:00
Junio C Hamano d4c5400865 Merge branch 'ab/no-more-git-global-super-prefix'
Stop using "git --super-prefix" and narrow the scope of its use to
the submodule--helper.

* ab/no-more-git-global-super-prefix:
  read-tree: add "--super-prefix" option, eliminate global
  submodule--helper: convert "{update,clone}" to their own "--super-prefix"
  submodule--helper: convert "status" to its own "--super-prefix"
  submodule--helper: convert "sync" to its own "--super-prefix"
  submodule--helper: convert "foreach" to its own "--super-prefix"
  submodule--helper: don't use global --super-prefix in "absorbgitdirs"
  submodule.c & submodule--helper: pass along "super_prefix" param
  read-tree + fetch tests: test failing "--super-prefix" interaction
  submodule absorbgitdirs tests: add missing "Migrating git..." tests
2023-01-05 15:07:23 +09:00
Junio C Hamano bc58ebf84e Merge branch 'ab/bundle-wo-args'
Fix to a small regression in 2.38 days.

* ab/bundle-wo-args:
  bundle <cmd>: have usage_msg_opt() note the missing "<file>"
  builtin/bundle.c: remove superfluous "newargc" variable
  bundle: don't segfault on "git bundle <subcmd>"
2023-01-05 15:07:22 +09:00
Junio C Hamano 319c3abadb Merge branch 'sa/cat-file-mailmap--batch-check'
'cat-file' gains mailmap support for its '--batch-check' and '-s'
options.

* sa/cat-file-mailmap--batch-check:
  cat-file: add mailmap support to --batch-check option
  cat-file: add mailmap support to -s option
2023-01-05 15:07:17 +09:00
Junio C Hamano e83d57e34a Merge branch 'ew/format-patch-mboxrd'
"git format-patch" learned to honor format.mboxrd even when sending
patches to the standard output stream,

* ew/format-patch-mboxrd:
  format-patch: support format.mboxrd with --stdout
2023-01-02 21:37:19 +09:00
Junio C Hamano 0903d8bbde Merge branch 'ds/bundle-uri-4'
Bundle URIs part 4.

* ds/bundle-uri-4:
  clone: unbundle the advertised bundles
  bundle-uri: download bundles from an advertised list
  bundle-uri: allow relative URLs in bundle lists
  strbuf: introduce strbuf_strip_file_from_path()
  bundle-uri: serve bundle.* keys from config
  bundle-uri client: add helper for testing server
  transport: rename got_remote_heads
  bundle-uri client: add boolean transfer.bundleURI setting
  clone: request the 'bundle-uri' command when available
  t: create test harness for 'bundle-uri' command
  protocol v2: add server-side "bundle-uri" skeleton
2023-01-02 21:37:18 +09:00
Junio C Hamano 48475f43a0 Merge branch 'sa/git-var-sequence-editor'
Just like "git var GIT_EDITOR" abstracts the complex logic to
choose which editor gets used behind it, "git var" now give support
to GIT_SEQUENCE_EDITOR.

* sa/git-var-sequence-editor:
  var: add GIT_SEQUENCE_EDITOR variable
2022-12-28 12:06:17 +09:00
Ævar Arnfjörð Bjarmason 6d5e9e53aa bundle <cmd>: have usage_msg_opt() note the missing "<file>"
Improve the usage we emit on e.g. "git bundle create" to note why
we're showing the usage, it's because the "<file>" argument is
missing.

We know that'll be the case for all parse_options_cmd_bundle() users,
as they're passing the "char **bundle_file" parameter, which as the
context shows we're expected to populate.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-12-28 08:30:52 +09:00
Ævar Arnfjörð Bjarmason e778ecbcee builtin/bundle.c: remove superfluous "newargc" variable
As noted in 891cb09db6 (bundle: don't segfault on "git bundle
<subcmd>", 2022-12-20) the "newargc" in this function is redundant to
using our own "argc". Let's refactor the function to avoid needlessly
introducing another variable.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-12-28 08:30:01 +09:00
Junio C Hamano d8e406449a Merge branch 'rs/am-parse-options-cleanup'
Code clean-up.

* rs/am-parse-options-cleanup:
  am: don't pass strvec to apply_parse_options()
2022-12-26 11:42:05 +09:00
Junio C Hamano 179547932f Merge branch 'jk/unused-post-2.39'
Code clean-up around unused function parameters.

* jk/unused-post-2.39:
  userdiff: mark unused parameter in internal callback
  list-objects-filter: mark unused parameters in virtual functions
  diff: mark unused parameters in callbacks
  xdiff: mark unused parameter in xdl_call_hunk_func()
  xdiff: drop unused parameter in def_ff()
  ws: drop unused parameter from ws_blank_line()
  list-objects: drop process_gitlink() function
  blob: drop unused parts of parse_blob_buffer()
  ls-refs: use repository parameter to iterate refs
2022-12-26 11:42:05 +09:00
Ævar Arnfjörð Bjarmason 4002ec3dcf read-tree: add "--super-prefix" option, eliminate global
The "--super-prefix" option to "git" was initially added in [1] for
use with "ls-files"[2], and shortly thereafter "submodule--helper"[3]
and "grep"[4]. It wasn't until [5] that "read-tree" made use of it.

At the time [5] made sense, but since then we've made "ls-files"
recurse in-process in [6], "grep" in [7], and finally
"submodule--helper" in the preceding commits.

Let's also remove it from "read-tree", which allows us to remove the
option to "git" itself.

We can do this because the only remaining user of it is the submodule
API, which will now invoke "read-tree" with its new "--super-prefix"
option. It will only do so when the "submodule_move_head()" function
is called.

That "submodule_move_head()" function was then only invoked by
"read-tree" itself, but now rather than setting an environment
variable to pass "--super-prefix" between cmd_read_tree() we:

- Set a new "super_prefix" in "struct unpack_trees_options". The
  "super_prefixed()" function in "unpack-trees.c" added in [5] will now
  use this, rather than get_super_prefix() looking up the environment
  variable we set earlier in the same process.

- Add the same field to the "struct checkout", which is only needed to
  ferry the "super_prefix" in the "struct unpack_trees_options" all the
  way down to the "entry.c" callers of "submodule_move_head()".

  Those calls which used the super prefix all originated in
  "cmd_read_tree()". The only other caller is the "unlink_entry()"
  caller in "builtin/checkout.c", which now passes a "NULL".

1. 74866d7579 (git: make super-prefix option, 2016-10-07)
2. e77aa336f1 (ls-files: optionally recurse into submodules, 2016-10-07)
3. 89c8626557 (submodule helper: support super prefix, 2016-12-08)
4. 0281e487fd (grep: optionally recurse into submodules, 2016-12-16)
5. 3d415425c7 (unpack-trees: support super-prefix option, 2017-01-17)
6. 188dce131f (ls-files: use repository object, 2017-06-22)
7. f9ee2fcdfa (grep: recurse in-process using 'struct repository', 2017-08-02)

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-12-26 10:21:44 +09:00
Ævar Arnfjörð Bjarmason f5a6be9d54 submodule--helper: convert "{update,clone}" to their own "--super-prefix"
As with a preceding commit to convert "absorbgitdirs", we can convert
"submodule--helper status" to use its own "--super-prefix", instead of
relying on the global "--super-prefix" argument to "git".

We need to convert both of these away from the global "--super-prefix"
at the same time, because "update" will call "clone", but "clone"
itself didn't make use of the global "--super-prefix" for displaying
paths. It was only on the list of sub-commands that accepted it
because "update"'s use of it would set it in its environment.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-12-26 10:21:44 +09:00
Ævar Arnfjörð Bjarmason 04f1fab4a1 submodule--helper: convert "status" to its own "--super-prefix"
As with a preceding commit to convert "absorbgitdirs", we can convert
"submodule--helper status" to use its own "--super-prefix", instead of
relying on the global "--super-prefix" argument to "git" itself. See
that earlier commit for the rationale and background.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-12-26 10:21:44 +09:00
Ævar Arnfjörð Bjarmason 99a32d87f8 submodule--helper: convert "sync" to its own "--super-prefix"
As with a preceding commit to convert "absorbgitdirs", we can convert
"submodule--helper sync" to use its own "--super-prefix", instead of
relying on the global "--super-prefix" argument to "git" itself. See
that earlier commit for the rationale and background.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-12-26 10:21:44 +09:00
Ævar Arnfjörð Bjarmason 677c981260 submodule--helper: convert "foreach" to its own "--super-prefix"
As with a preceding commit to convert "absorbgitdirs", we can convert
"submodule--helper foreach" to use its own "--super-prefix", instead
of relying on the global "--super-prefix" argument to "git"
itself. See that earlier commit for the rationale and background.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-12-26 10:21:44 +09:00
Ævar Arnfjörð Bjarmason bb61a962d2 submodule--helper: don't use global --super-prefix in "absorbgitdirs"
The "--super-prefix" facility was introduced in [1] has always been a
transitory hack, which is why we've made it an error to supply it as
an option to "git" to commands that don't know about it.

That's been a good goal, as it has a global effect we haven't wanted
calls to get_super_prefix() from built-ins we didn't expect.

But it has meant that when we've had chains of different built-ins
using it all of the processes in that "chain" have needed to support
it, and worse processes that don't need it have needed to ask for
"SUPPORT_SUPER_PREFIX" because their parent process needs it.

That's how "fsmonitor--daemon" ended up with it, per [2] it's called
from (among other things) "submodule--helper absorbgitdirs", but as we
declared "submodule--helper" as "SUPPORT_SUPER_PREFIX" we needed to
declare "fsmonitor--daemon" as accepting it too, even though it
doesn't care about it.

But in the case of "absorbgitdirs" it only needed "--super-prefix" to
invoke itself recursively, and we'd never have another "in-between"
process in the chain. So we didn't need the bigger hammer of "git
--super-prefix", and the "setenv(GIT_SUPER_PREFIX_ENVIRONMENT, ...)"
that it entails.

Let's instead accept a hidden "--super-prefix" option to
"submodule--helper absorbgitdirs" itself.

Eventually (as with all other "--super-prefix" users) we'll want to
clean this code up so that this all happens in-process. I.e. needing
any variant of "--super-prefix" is itself a hack around our various
global state, and implicit reliance on "the_repository". This stepping
stone makes such an eventual change easier, as we'll need to deal with
less global state at that point.

The "fsmonitor--daemon" test adjusted here was added in [3]. To assert
that it didn't run into the "--super-prefix" message it was asserting
the output it didn't have. Let's instead assert the full output that
we *do* have, using the same pattern as a preceding change to
"t/t7412-submodule-absorbgitdirs.sh" used.

We could also remove the test entirely (as [4] did), but even though
the initial reason for having it is gone we're still getting some
marginal benefit from testing the "fsmonitor" and "submodule
absorbgitdirs" interaction, so let's keep it.

The change here to have either a NULL or non-"" string as a
"super_prefix" instead of the previous arrangement of "" or non-"" is
somewhat arbitrary. We could also decide to never have to check for
NULL.

As we'll be changing the rest of the "git --super-prefix" users to the
same pattern, leaving them all consistent makes sense. Why not pick ""
over NULL? Because that's how the "prefix" works[5], and having
"prefix" and "super_prefix" work the same way will be less
confusing. That "prefix" picked NULL instead of "" is itself
arbitrary, but as it's easy to make this small bit of our overall API
consistent, let's go with that.

1. 74866d7579 (git: make super-prefix option, 2016-10-07)
2. 53fcfbc84f (fsmonitor--daemon: allow --super-prefix argument,
   2022-05-26)
3. 53fcfbc84f (fsmonitor--daemon: allow --super-prefix argument,
   2022-05-26)
4. https://lore.kernel.org/git/20221109004708.97668-5-chooglen@google.com/
5. 9725c8dda2 (built-ins: trust the "prefix" from run_builtin(),
   2022-02-16)

Signed-off-by: Glen Choo <chooglen@google.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-12-26 10:21:43 +09:00
Ævar Arnfjörð Bjarmason f0a5e5ad57 submodule.c & submodule--helper: pass along "super_prefix" param
Start passing the "super_prefix" along as a parameter to
get_submodule_displaypath() and absorb_git_dir_into_superproject(),
rather than get the value directly as a global.

This is in preparation for subsequent commits, where we'll gradually
phase out get_super_prefix() for an alternative way of getting the
"super_prefix".

Most of the users of this get a get_super_prefix() value, either
directly or by indirection. The exceptions are:

- builtin/rm.c: Doesn't declare SUPPORT_SUPER_PREFIX, so we'd have
  died if this was provided, so it's safe to pass "NULL".

- deinit_submodule(): The "deinit_submodule()" function has never been
  able to use the "git -super-prefix". It will call
  "absorb_git_dir_into_superproject()", but it will only do so from the
  top-level project.

  If "absorbgitdirs" recurses will use the "path" passed to
  "absorb_git_dir_into_superproject()" in "deinit_submodule()" as its
  starting "--super-prefix". So we can safely remove the
  get_super_prefix() call here, and pass NULL instead.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-12-26 10:21:43 +09:00
Eric Wong 4810946f60 format-patch: support format.mboxrd with --stdout
mboxrd is a more robust output format when used with --stdout
and needs more exposure.  Introducing this config knob lets
users choose the more robust format for all their --stdout
uses.

Relying on --pretty=mboxrd and including all of pretty-formats.txt
in the `git format-patch' documentation would likely be
confusing to users.  Furthermore, this setting is useful across
multiple invocations.  So introduce `format.mboxrd' as a boolean
configuration knob that changes the default --pretty=email format
to --pretty=mboxrd when (and only when) --stdout is in use.

Signed-off-by: Eric Wong <e@80x24.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-12-25 16:32:45 +09:00
Derrick Stolee 876094ac16 clone: unbundle the advertised bundles
A previous change introduced the transport methods to acquire a bundle
list from the 'bundle-uri' protocol v2 command, when advertised _and_
when the client has chosen to enable the feature.

Teach Git to download and unbundle the data advertised by those bundles
during 'git clone'. This takes place between the ref advertisement and
the object data download, and stateful connections will linger while
the client downloads bundles. In the future, we should consider closing
the remote connection during this process.

Also, since the --bundle-uri option exists, we do not want to mix the
advertised bundles with the user-specified bundles.

Signed-off-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-12-25 16:24:24 +09:00
Ævar Arnfjörð Bjarmason 0cfde740f0 clone: request the 'bundle-uri' command when available
Set up all the needed client parts of the 'bundle-uri' protocol v2
command, without actually doing anything with the bundle URIs.

If the server says it supports 'bundle-uri' teach Git to issue the
'bundle-uri' command after the 'ls-refs' during 'git clone'. The
returned key=value pairs are passed to the bundle list code which is
tested using a different ingest mechanism in t5750-bundle-uri-parse.sh.

At this point, Git does nothing with that bundle list. It will not
download any of the bundles. That will come in a later change after
these protocol bits are finalized.

The no-op client is initially used only by 'git clone' to test the basic
functionality, and eventually will bootstrap the initial download of Git
objects during a fresh clone. The bundle URI client will not be
integrated into other fetches until a mechanism is created to select a
subset of bundles for download.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-12-25 16:24:23 +09:00
Ævar Arnfjörð Bjarmason 891cb09db6 bundle: don't segfault on "git bundle <subcmd>"
Since aef7d75e58 (builtin/bundle.c: let parse-options parse
subcommands, 2022-08-19) we've been segfaulting if no argument was
provided.

The fix is easy, as all of the "git bundle" subcommands require a
non-option argument we can check that we have arguments left after
calling parse-options().

This makes use of code added in 73c3253d75 (bundle: framework for
options before bundle file, 2019-11-10), before this change that code
has always been unreachable. In 73c3253d75 we'd never reach it as we
already checked "argc < 2" in cmd_bundle() itself.

Then when aef7d75e58 (whose segfault we're fixing here) migrated this
code to the subcommand API it removed that "argc < 2" check, but we
were still checking the wrong "argc" in parse_options_cmd_bundle(), we
need to check the "newargc". The "argc" will always be >= 1, as it
will necessarily contain at least the subcommand name
itself (e.g. "create").

As an aside, this could be safely squashed into this, but let's not do
that for this minimal segfault fix, as it's an unrelated refactoring:

	--- a/builtin/bundle.c
	+++ b/builtin/bundle.c
	@@ -55,13 +55,12 @@ static int parse_options_cmd_bundle(int argc,
	 		const char * const usagestr[],
	 		const struct option options[],
	 		char **bundle_file) {
	-	int newargc;
	-	newargc = parse_options(argc, argv, NULL, options, usagestr,
	+	argc = parse_options(argc, argv, NULL, options, usagestr,
	 			     PARSE_OPT_STOP_AT_NON_OPTION);
	-	if (!newargc)
	+	if (!argc)
	 		usage_with_options(usagestr, options);
	 	*bundle_file = prefix_filename(prefix, argv[0]);
	-	return newargc;
	+	return argc;
	 }

	 static int cmd_bundle_create(int argc, const char **argv, const char *prefix) {

Reported-by: Hubert Jasudowicz <hubertj@stmcyber.pl>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Tested-by: Hubert Jasudowicz <hubertj@stmcyber.pl>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-12-25 16:01:09 +09:00
Siddharth Asthana a797c0ea04 cat-file: add mailmap support to --batch-check option
Even though the cat-file command with `--batch-check` option does not
complain when `--use-mailmap` option is given, the latter option is
ignored. Compute the size of the object after replacing the idents and
report it instead.

In order to make `--batch-check` option honour the mailmap mechanism we
have to read the contents of the commit/tag object.

There were two ways to do it:

1. Make two calls to `oid_object_info_extended()`. If `--use-mailmap`
   option is given, the first call will get us the type of the object
   and second call will only be made if the object type is either a
   commit or tag to get the contents of the object.

2. Make one call to `oid_object_info_extended()` to get the type of the
   object. Then, if the object type is either of commit or tag, make a
   call to `repo_read_object_file()` to read the contents of the object.

I benchmarked the following command with both the above approaches and
compared against the current implementation where `--use-mailmap`
option is ignored:

`git cat-file --use-mailmap --batch-all-objects --batch-check --buffer
--unordered`

The results can be summarized as follows:
                       Time (mean ± σ)
default               827.7 ms ± 104.8 ms
first approach        6.197 s ± 0.093 s
second approach       1.975 s ± 0.217 s

Since, the second approach is faster than the first one, I implemented
it in this patch.

The command git cat-file can now use the mailmap mechanism to replace
idents with canonical versions for commit and tag objects. There are
several options like `--batch`, `--batch-check` and `--batch-command`
that can be combined with `--use-mailmap`. But the documentation for
`--batch`, `--batch-check` and `--batch-command` doesn't say so. This
patch fixes that documentation.

Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: John Cai <johncai86@gmail.com>
Helped-by: Taylor Blau <me@ttaylorr.com>
Helped-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Siddharth Asthana <siddharthasthana31@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-12-20 15:20:45 +09:00
Siddharth Asthana 49050a043b cat-file: add mailmap support to -s option
Even though the cat-file command with `-s` option does not complain when
`--use-mailmap` option is given, the latter option is ignored. Compute
the size of the object after replacing the idents and report it instead.

In order to make `-s` option honour the mailmap mechanism we have to
read the contents of the commit/tag object. Make use of the call to
`oid_object_info_extended()` to get the contents of the object and store
in `buf`. `buf` is later freed in the function.

Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: John Cai <johncai86@gmail.com>
Helped-by: Taylor Blau <me@ttaylorr.com>
Helped-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Siddharth Asthana <siddharthasthana31@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-12-20 15:20:45 +09:00
Junio C Hamano 963f8d3b63 Merge branch 'rj/branch-copy-and-rename'
Fix a pair of bugs in 'git branch'.

* rj/branch-copy-and-rename:
  branch: force-copy a branch to itself via @{-1} is a no-op
2022-12-19 11:46:18 +09:00
Junio C Hamano 4e09e0dae6 Merge branch 'sx/pthread-error-check-fix'
Correct pthread API usage.

* sx/pthread-error-check-fix:
  maintenance: compare output of pthread functions for inequality with 0
2022-12-19 11:46:17 +09:00
Junio C Hamano ab91f6b7c4 Merge branch 'rs/diff-parseopts'
The way the diff machinery prepares the options array for the
parse_options API has been refactored to avoid resource leaks.

* rs/diff-parseopts:
  diff: remove parseopts member from struct diff_options
  diff: use add_diff_options() in diff_opt_parse()
  diff: factor out add_diff_options()
2022-12-19 11:46:17 +09:00
Junio C Hamano 44265e5b57 Merge branch 'jh/t7527-unflake-by-forcing-cookie'
Make fsmonitor more robust to avoid the flakiness seen in t7527.

* jh/t7527-unflake-by-forcing-cookie:
  fsmonitor: fix race seen in t7527
2022-12-19 11:46:13 +09:00
Sean Allred 4c3dd9304e var: add GIT_SEQUENCE_EDITOR variable
The editor program used by Git when editing the sequencer "todo" file
is determined by examining a few environment variables and also
affected by configuration variables. Introduce "git var
GIT_SEQUENCE_EDITOR" to give users access to the final result of the
logic without having to know the exact details.

This is very similar in spirit to 44fcb497 (Teach git var about
GIT_EDITOR, 2009-11-11) that introduced "git var GIT_EDITOR".

Signed-off-by: Sean Allred <allred.sean@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-12-18 11:48:26 +09:00
Junio C Hamano d818458088 Merge branch 'sa/git-var-empty'
"git var UNKNOWN_VARIABLE" and "git var VARIABLE" with the variable
given an empty value used to behave identically.  Now the latter
just gives an empty output, while the former still gives an error
message.

* sa/git-var-empty:
  var: allow GIT_EDITOR to return null
  var: do not print usage() with a correct invocation
2022-12-14 15:55:47 +09:00
Junio C Hamano cb3d2e535a Merge branch 'rs/multi-filter-args'
Fix a bug where `pack-objects` would not respect multiple `--filter`
arguments when invoked directly.

* rs/multi-filter-args:
  list-objects-filter: remove OPT_PARSE_LIST_OBJECTS_FILTER_INIT()
  pack-objects: simplify --filter handling
  pack-objects: fix handling of multiple --filter options
  t5317: demonstrate failure to handle multiple --filter options
  t5317: stop losing return codes of git ls-files
2022-12-14 15:55:47 +09:00
Junio C Hamano 9ea1378d04 Merge branch 'ab/various-leak-fixes'
Various leak fixes.

* ab/various-leak-fixes:
  built-ins: use free() not UNLEAK() if trivial, rm dead code
  revert: fix parse_options_concat() leak
  cherry-pick: free "struct replay_opts" members
  rebase: don't leak on "--abort"
  connected.c: free the "struct packed_git"
  sequencer.c: fix "opts->strategy" leak in read_strategy_opts()
  ls-files: fix a --with-tree memory leak
  revision API: call graph_clear() in release_revisions()
  unpack-file: fix ancient leak in create_temp_file()
  built-ins & libs & helpers: add/move destructors, fix leaks
  dir.c: free "ident" and "exclude_per_dir" in "struct untracked_cache"
  read-cache.c: clear and free "sparse_checkout_patterns"
  commit: discard partial cache before (re-)reading it
  {reset,merge}: call discard_index() before returning
  tests: mark tests as passing with SANITIZE=leak
2022-12-14 15:55:46 +09:00
Junio C Hamano 7576e512ce Merge branch 'kz/merge-tree-merge-base'
"merge-tree" learns a new `--merge-base` option.

* kz/merge-tree-merge-base:
  docs: fix description of the `--merge-base` option
  merge-tree.c: allow specifying the merge-base when --stdin is passed
  merge-tree.c: add --merge-base=<commit> option
2022-12-14 15:55:46 +09:00
Junio C Hamano bee6e7a8f9 Merge branch 'dd/git-bisect-builtin'
`git bisect` becomes a builtin.

* dd/git-bisect-builtin:
  bisect; remove unused "git-bisect.sh" and ".gitignore" entry
  Turn `git bisect` into a full built-in
  bisect--helper: log: allow arbitrary number of arguments
  bisect--helper: handle states directly
  bisect--helper: emit usage for "git bisect"
  bisect test: test exit codes on bad usage
  bisect--helper: identify as bisect when report error
  bisect-run: verify_good: account for non-negative exit status
  bisect run: keep some of the post-v2.30.0 output
  bisect: fix output regressions in v2.30.0
  bisect: refactor bisect_run() to match CodingGuidelines
  bisect tests: test for v2.30.0 "bisect run" regressions
2022-12-14 15:55:45 +09:00
Jeff King 61bdc7c5d8 diff: mark unused parameters in callbacks
The diff code provides a format_callback interface, but not every
callback needs each parameter (e.g., the "opt" and "data" parameters are
frequently left unused). Likewise for the output_prefix callback, the
low-level change/add_remove interfaces, the callbacks used by
xdi_diff(), etc.

Mark unused arguments in the callback implementations to quiet
-Wunused-parameter.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-12-13 22:16:23 +09:00
René Scharfe a658e881c1 am: don't pass strvec to apply_parse_options()
apply_parse_options() passes the array of argument strings to
parse_options(), which removes recognized options.  The removed strings
are not freed, though.

Make a copy of the strvec to pass to the function to retain the pointers
of its strings, so we release them all at the end.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-12-13 22:07:37 +09:00
Seija 786e67611d maintenance: compare output of pthread functions for inequality with 0
The documentation for pthread_create and pthread_sigmask state that:

"On success, pthread_create() returns 0;
on error, it returns an error number"

As such, we ought to check for an error
by seeing if the output is not 0.

Checking for "less than" is a mistake
as the error code numbers can be greater than 0.

Signed-off-by: Seija <doremylover123@gmail.com>
Acked-by: Jeff Hostetler <jeffhost@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-12-05 10:15:54 +09:00
Jeff Hostetler 6692d45477 fsmonitor: fix race seen in t7527
Fix racy tests in t7527 by forcing the use of cookie files during all
types of queries.  There were originaly observed on M1 macs with file
system encryption enabled.

There were a series of simple tests, such as "edit some files" and
"create some files", that started the daemon with GIT_TRACE_FSMONITOR
enabled so that the daemon would emit "event: <path>" messages to the
trace log.  The test would make worktree modifications and then grep
the log file to confirm it contained the expected trace messages.
The greps would occasionally racily-fail.  The expected messages
were always present in the log file, just not yet always present
when the greps ran.

NEEDSWORK: One could argue that the tests should use the `test-tool
fsmonitor-client query` and search for the expected pathnames in the
output rather than grepping the trace log, but I'll leave that for a
later exercise.

The racy tests called `test-tool fsmonitor-client query --token 0`
before grepping the log file.  (Presumably to introduce a small delay
and/or to let the daemon sync with the file system following the last
modification, but that was not always sufficient and hence the race.)

When the query arg is just "0", the daemon treated it as a V1
(aka timestamp-relative request) and responded with a "trivial
response" and a new token, but without trying to catch up to the
the file system event stream.  So the "event: <path>" messages
may or may not yet be in the log file when the grep commands
started.

FWIW, if the tests had sent `--token builtin:0:0` instead, it would
have forced a slightly different code path in the daemon that would
cause the daemon to use a cookie file and let it catch up with the
file system event stream.  I did not see any test failures with this
change.

Instead of modifying the test, I updated the fsmonitor--daemon to
always use a cookie file and catch up to the file system on any
query operation, regardless of the format of the request token.
This is safer.

FWIW, I think the effect of the race was limited to the test.
Commands like `git status` would always do a full scan when getting a
trivial response.  The fact that the daemon was slighly behind the
file system when it generated the response token would cause a second
`git status` to get a few extra paths that the client would have to
examine, but it would not be missing paths.

FWIW, I also think that an earlier version of the code always did
the cookie file for all types of queries, but it was optimized out
during a round of reviews or rework and we didn't notice the race.

Signed-off-by: Jeff Hostetler <jeffhostetler@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-12-02 09:07:48 +09:00
René Scharfe c5630c4868 diff: factor out add_diff_options()
Add a function for appending the parseopts member of struct diff_options
to a struct option array.  Use it in two sites instead of accessing the
parseopts member directly.  Decoupling callers from diff internals like
that allows us to change the latter.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-12-02 08:25:29 +09:00
René Scharfe 0d5448a554 pack-objects: simplify --filter handling
pack-objects uses OPT_PARSE_LIST_OBJECTS_FILTER_INIT() to initialize the
a rev_info struct lazily before populating its filter member using the
--filter option values.  It tracks whether the initialization is needed
using the .have_revs member of the callback data.

There is a better way: Use a stand-alone list_objects_filter_options
struct and build a rev_info struct with its .filter member after option
parsing.  This allows using the simpler OPT_PARSE_LIST_OBJECTS_FILTER()
and getting rid of the extra callback mechanism.

Even simpler would be using a struct rev_info as before 5cb28270a1
(pack-objects: lazily set up "struct rev_info", don't leak, 2022-03-28),
but that would expose a memory leak caused by repo_init_revisions()
followed by release_revisions() without a setup_revisions() call in
between.

Using list_objects_filter_options also allows pushing the rev_info
struct into get_object_list(), where it arguably belongs. Either way,
this is all left for later.

Helped-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-11-30 10:00:33 +09:00
René Scharfe 825babe5d5 pack-objects: fix handling of multiple --filter options
Since 5cb28270a1 (pack-objects: lazily set up "struct rev_info", don't
leak, 2022-03-28) --filter options given to git pack-objects overrule
earlier ones, letting only the leftmost win and leaking the memory
allocated for earlier ones.  Fix that by only initializing the rev_info
struct once.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-11-30 10:00:33 +09:00
Junio C Hamano fd8dcbb07c Merge branch 'ab/doc-synopsis-and-cmd-usage'
Doc and message fix.

* ab/doc-synopsis-and-cmd-usage:
  i18n: fix command template placeholder format
2022-11-29 10:41:06 +09:00
Junio C Hamano 041df69edd Merge branch 'ab/fewer-the-index-macros'
Progress on removing 'the_index' convenience wrappers.

* ab/fewer-the-index-macros:
  cocci: apply "pending" index-compatibility to some "builtin/*.c"
  cache.h & test-tool.h: add & use "USE_THE_INDEX_VARIABLE"
  {builtin/*,repository}.c: add & use "USE_THE_INDEX_VARIABLE"
  cocci: apply "pending" index-compatibility to "t/helper/*.c"
  cocci & cache.h: apply variable section of "pending" index-compatibility
  cocci & cache.h: apply a selection of "pending" index-compatibility
  cocci: add a index-compatibility.pending.cocci
  read-cache API & users: make discard_index() return void
  cocci & cache.h: remove rarely used "the_index" compat macros
  builtin/{grep,log}.: don't define "USE_THE_INDEX_COMPATIBILITY_MACROS"
  cache.h: remove unused "the_index" compat macros
2022-11-28 12:13:46 +09:00
Junio C Hamano 7d7ed48dd5 Merge branch 'ew/prune-with-missing-objects-pack'
"git prune" may try to iterate over .git/objects/pack for trash
files to remove in it, and loudly fail when the directory is
missing, which is not necessary.  The command has been taught to
ignore such a failure.

* ew/prune-with-missing-objects-pack:
  prune: quiet ENOENT on missing directories
2022-11-28 12:13:44 +09:00
Jean-Noël Avila d1ddc4e3f6 i18n: fix command template placeholder format
Signed-off-by: Jean-Noël Avila <jn.avila@free.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-11-27 10:29:44 +09:00
Sean Allred 2ad150e35e var: allow GIT_EDITOR to return null
The handling to die early when there is no EDITOR is valuable when
used in normal code (i.e., editor.c). In git-var, where
null/empty-string is a perfectly valid value to return, it doesn't
make as much sense.

Remove this handling from `git var GIT_EDITOR` so that it does not
fail so noisily when there is no defined editor.

Signed-off-by: Sean Allred <allred.sean@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-11-27 09:35:55 +09:00
Sean Allred 26b8abc7b1 var: do not print usage() with a correct invocation
Before, git-var could print usage() even if the command was invoked
correctly with a variable defined in git_vars -- provided that its
read() function returned NULL.

Now, we only print usage() only if it was called with a logical
variable that wasn't defined -- regardless of read().

Since we now know the variable is valid when we call read_var(), we
can avoid printing usage() here (and exiting with code 129) and
instead exit quietly with code 1. While exiting with a different code
can be a breaking change, it's far better than changing the exit
status more generally from 'failure' to 'success'.

Signed-off-by: Sean Allred <allred.sean@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-11-27 09:35:55 +09:00
Junio C Hamano f8828f9125 Merge branch 'ps/receive-use-only-advertised'
"git receive-pack" used to use all the local refs as the boundary for
checking connectivity of the data "git push" sent, but now it uses
only the refs that it advertised to the pusher. In a repository with
the .hideRefs configuration, this reduces the resources needed to
perform the check.
cf. <221028.86bkpw805n.gmgdl@evledraar.gmail.com>
cf. <xmqqr0yrizqm.fsf@gitster.g>

* ps/receive-use-only-advertised:
  receive-pack: only use visible refs for connectivity check
  rev-parse: add `--exclude-hidden=` option
  revision: add new parameter to exclude hidden refs
  revision: introduce struct to handle exclusions
  revision: move together exclusion-related functions
  refs: get rid of global list of hidden refs
  refs: fix memory leak when parsing hideRefs config
2022-11-23 11:22:25 +09:00
Junio C Hamano 173fc54b00 Merge branch 'jt/submodule-on-demand'
Push all submodules recursively with
'--recurse-submodules=on-demand'.

* jt/submodule-on-demand:
  Doc: document push.recurseSubmodules=only
2022-11-23 11:22:25 +09:00