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9637 commits

Author SHA1 Message Date
Ævar Arnfjörð Bjarmason 07a348e746 hook.c users: use "hook_exists()" instead of "find_hook()"
Use the new hook_exists() function instead of find_hook() where the
latter was called in boolean contexts. This make subsequent changes in
a series where we further refactor the hook API clearer, as we won't
conflate wanting to get the path of the hook with checking for its
existence.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-27 09:44:54 -07:00
Emily Shaffer 330155ed8a hook.c: add a hook_exists() wrapper and use it in bugreport.c
Add a boolean version of the find_hook() function for those callers
who are only interested in checking whether the hook exists, not what
the path to it is.

Signed-off-by: Emily Shaffer <emilyshaffer@google.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-27 09:44:54 -07:00
Ævar Arnfjörð Bjarmason 5e3aba33da hook.[ch]: move find_hook() from run-command.c to hook.c
Move the find_hook() function from run-command.c to a new hook.c
library. This change establishes a stub library that's pretty
pointless right now, but will see much wider use with Emily Shaffer's
upcoming "configuration-based hooks" series.

Eventually all the hook related code will live in hook.[ch]. Let's
start that process by moving the simple find_hook() function over
as-is.

Signed-off-by: Emily Shaffer <emilyshaffer@google.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-27 09:44:54 -07:00
Ævar Arnfjörð Bjarmason f188160be9 bundle: remove ignored & undocumented "--verbose" flag
In 73c3253d75 (bundle: framework for options before bundle file,
2019-11-10) the "git bundle" command was refactored to use
parse_options(). In that refactoring it started understanding the
"--verbose" flag before the subcommand, e.g.:

    git bundle --verbose verify --quiet

However, nothing ever did anything with this "verbose" variable, and
the change wasn't documented. It appears to have been something that
escaped the lab, and wasn't flagged by reviewers at the time. Let's
just remove it.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Reviewed-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-23 15:03:48 -07:00
Junio C Hamano b1b065ee35 Merge branch 'rs/use-xopen-in-index-pack'
Code clean-up.

* rs/use-xopen-in-index-pack:
  index-pack: use xopen in init_thread
2021-09-23 13:44:50 -07:00
Junio C Hamano f7511fdfbd Merge branch 'jt/submodule-name-to-gitdir'
Code refactoring.

* jt/submodule-name-to-gitdir:
  submodule: extract path to submodule gitdir func
2021-09-23 13:44:49 -07:00
Junio C Hamano bd42622e5f Merge branch 'ma/help-w-check-for-requested-page'
The error in "git help no-such-git-command" is handled better.

* ma/help-w-check-for-requested-page:
  help: make sure local html page exists before calling external processes
2021-09-23 13:44:48 -07:00
Junio C Hamano c2e799012b Merge branch 'cb/unix-sockets-with-windows'
Adjust credential-cache helper to Windows.

* cb/unix-sockets-with-windows:
  git-compat-util: include declaration for unix sockets in windows
  credential-cache: check for windows specific errors
  t0301: fixes for windows compatibility
2021-09-23 13:44:48 -07:00
Junio C Hamano 0e35107e7d Merge branch 'ab/retire-option-argument'
An oddball OPTION_ARGUMENT feature has been removed from the
parse-options API.

* ab/retire-option-argument:
  parse-options API: remove OPTION_ARGUMENT feature
  difftool: use run_command() API in run_file_diff()
  difftool: prepare "diff" cmdline in cmd_difftool()
  difftool: prepare "struct child_process" in cmd_difftool()
2021-09-23 13:44:48 -07:00
Junio C Hamano 0a4cb1f1f2 Merge branch 'mr/bisect-in-c-4'
Rewrite of "git bisect" in C continues.

* mr/bisect-in-c-4:
  bisect--helper: retire `--bisect-next-check` subcommand
  bisect--helper: reimplement `bisect_run` shell function in C
  bisect--helper: reimplement `bisect_visualize()` shell function in C
  run-command: make `exists_in_PATH()` non-static
  t6030-bisect-porcelain: add test for bisect visualize
  t6030-bisect-porcelain: add tests to control bisect run exit cases
2021-09-23 13:44:48 -07:00
Junio C Hamano b5866edf97 Merge branch 'ab/gc-remove-unused-call'
Code clean-up.

* ab/gc-remove-unused-call:
  gc: remove unused launchctl_get_uid() call
2021-09-23 13:44:46 -07:00
Junio C Hamano 6c84b007c4 Merge branch 'en/am-abort-fix'
When "git am --abort" fails to abort correctly, it still exited
with exit status of 0, which has been corrected.

* en/am-abort-fix:
  am: fix incorrect exit status on am fail to abort
  t4151: add a few am --abort tests
  git-am.txt: clarify --abort behavior
2021-09-23 13:44:45 -07:00
Junio C Hamano 06a0eeaa25 Merge branch 'ps/update-ref-batch-flush'
"git update-ref --stdin" failed to flush its output as needed,
which potentially led the conversation to a deadlock.

* ps/update-ref-batch-flush:
  t1400: avoid SIGPIPE race condition on fifo
  update-ref: fix streaming of status updates
2021-09-23 13:44:45 -07:00
Junio C Hamano 77bd616367 Merge branch 'da/difftool-dir-diff-symlink-fix' into da/difftool
* da/difftool-dir-diff-symlink-fix:
  difftool: fix symlink-file writing in dir-diff mode
2021-09-23 11:26:17 -07:00
David Aguilar 5bafb3576a difftool: fix symlink-file writing in dir-diff mode
The difftool dir-diff mode handles symlinks by replacing them with their
readlink(2) values. This allows diff tools to see changes to symlinks
as if they were regular text diffs with the old and new path values.
This is analogous to what "git diff" displays when symlinks change.

The temporary diff directories that are created initially contain
symlinks because they get checked-out using a temporary index that
retains the original symlinks as checked-in to the repository.

A bug was introduced when difftool was rewritten in C that made
difftool write the readlink(2) contents into the pointed-to file rather
than the symlink itself. The write was going through the symlink and
writing to its target rather than writing to the symlink path itself.

Replace symlinks with raw text files by unlinking the symlink path
before writing the readlink(2) content into them.

When 18ec800512 (difftool: handle modified symlinks in dir-diff mode,
2017-03-15) added handling for modified symlinks this bug got recorded
in the test suite. The tests included the pointed-to symlink target
paths. These paths were being reported because difftool was erroneously
writing to them, but they should have never been reported nor written.

Correct the modified-symlinks test cases by removing the target files
from the expected output.

Add a test to ensure that symlinks are written with the readlink(2)
values and that the target files contain their original content.

Reported-by: Alan Blotz <work@blotz.org>
Helped-by: Đoàn Trần Công Danh <congdanhqx@gmail.com>
Signed-off-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-23 11:24:41 -07:00
Ævar Arnfjörð Bjarmason 06fa4db3f7 help: move column config discovery to help.c library
When a git_config() call was added in dbfae68969 (help: reuse
print_columns() for help -a, 2012-04-13) to read the column config
we'd always use the resulting "colopts" variable.

Then in 63eae83f8f (help: add "-a --verbose" to list all commands
with synopsis, 2018-05-20) we started only using the "colopts" config
under "--all" if "--no-verbose" was also given, but the "git_config()"
call was not moved inside the "verbose" branch of the code.

This change effectively does that, we'll only call list_commands()
under "--all --no-verbose", so let's have it look up the config it
needs. See 26c7d06783 (help -a: improve and make --verbose default, 2018-09-29) for another case in help.c where we look up config.

The get_colopts() function is named for consistency with the existing
get_alias() function added in 26c7d06783.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-23 10:30:43 -07:00
Ævar Arnfjörð Bjarmason a9bacccae5 help / completion: make "git help" do the hard work
The "help" builtin has been able to emit configuration variables since
e17ca92637 (completion: drop the hard coded list of config vars,
2018-05-26), but it hasn't produced exactly the format the completion
script wanted. Let's do that.

We got partway there in 2675ea1cc0 (completion: use 'sort -u' to
deduplicate config variable names, 2019-08-13) and
d9438873c4 (completion: deduplicate configuration sections,
2019-08-13), but after both we still needed some sorting,
de-duplicating and awk post-processing of the list.

We can instead simply do the relevant parsing ourselves (we were doing
most of it already), and call string_list_remove_duplicates() after
already sorting the list, so the caller doesn't need to invoke "sort
-u". The "--config-for-completion" output is the same as before after
being passed through "sort -u".

Then add a new "--config-sections-for-completion" option. Under that
output we'll emit config sections like "alias" (instead of "alias." in
the --config-for-completion output).

We need to be careful to leave the "--config-for-completion" option
compatible with users git, but are still running a shell with an older
git-completion.bash. If we e.g. changed the option name they'd see
messages about git-completion.bash being unable to find the
"--config-for-completion" option.

Such backwards compatibility isn't something we should bend over
backwards for, it's only helping users who:

 * Upgrade git
 * Are in an old shell
 * The git-completion.bash in that shell hasn't cached the old
   "--config-for-completion" output already.

But since it's easy in this case to retain compatibility, let's do it,
the older versions of git-completion.bash won't care that the input
they get doesn't change after a "sort -u".

While we're at it let's make "--config-for-completion" die if there's
anything left over in "argc", and do the same in the new
"--config-sections-for-completion" option.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-23 10:30:43 -07:00
Ævar Arnfjörð Bjarmason d35d03cf93 help: simplify by moving to OPT_CMDMODE()
As preceding commits have incrementally established all of the --all,
--guides, --config and hidden --config-for-completion options are
mutually exclusive. So let's use OPT_CMDMODE() to parse the
command-line instead, and take advantage of its conflicting options
detection.

This is the first command with a hidden CMDMODE, so let's introduce a
OPT_CMDMODE_F() macro to go along with OPT_CMDMODE().

I think this makes the usage information that we emit slightly worse,
e.g. before we'd emit:

    $ git help --all --config
    fatal: --config and --all cannot be combined

    usage: git help [-a|--all] [--[no-]verbose]]
             [[-i|--info] [-m|--man] [-w|--web]] [<command>]
       or: git help [-g|--guides]
       or: git help [-c|--config]
    [...]
    $

And now:

    $ git help --all --config
    error: option `config' is incompatible with --all
    $

But improving that is a general topic for parse-options.c improvement,
i.e. we should probably emit the full usage in that case.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-23 10:30:43 -07:00
Ævar Arnfjörð Bjarmason 0a5940fbe7 help: correct logic error in combining --all and --guides
The --all and --guides commands could be combined, which wouldn't have
any impact on the output except for:

    git help --all --guides --no-verbose

Listing the guide alongside that output was clearly not intended, so
let's error out here. See 002b726a40 (builtin/help.c: add
list_common_guides_help() function, 2013-04-02) for the initial
implementation.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-23 10:30:43 -07:00
Ævar Arnfjörð Bjarmason 1ed4bef6b4 help: correct logic error in combining --all and --config
Fix a bug in the --config option that's been there ever since its
introduction in 3ac68a93fd (help: add --config to list all available
config, 2018-05-26). Die when --all and --config are combined,
combining them doesn't make sense.

The code for the --config option when combined with an earlier
refactoring done to support the --guide option in
65f98358c0 (builtin/help.c: add --guide option, 2013-04-02) would
cause us to take the "--all" branch early and ignore the --config
option.

Let's instead list these as incompatible, both in the synopsis and
help output, and enforce it in the code itself.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-23 10:30:43 -07:00
Ævar Arnfjörð Bjarmason 9856ea6785 help: correct usage & behavior of "git help --guides"
As noted in 65f98358c0 (builtin/help.c: add --guide option,
2013-04-02) and a133737b80 (doc: include --guide option description
for "git help", 2013-04-02) which introduced the --guide option, it
cannot be combined with e.g. <command>.

Change the command and the "SYNOPSIS" section to reflect that desired
behavior. Now that we assert this in code we don't need to
exhaustively describe the previous confusing behavior in the
documentation either, instead of silently ignoring the provided
argument we'll now error out.

The "We're done. Ignore any remaining args" comment added in
15f7d49438 (builtin/help.c: split "-a" processing into two,
2013-04-02) can now be removed, it's obvious that we're asserting the
behavior with the check of "argc".

The "--config" option is still missing from the synopsis, it will be
added in a subsequent commit where we'll fix bugs in its
implementation.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-23 10:30:43 -07:00
Bagas Sanjaya 51b04c05b7 difftool: fix word spacing in the usage strings
Remove spaces in `non - zero` and add a space between the diff
format/mode and option parentheses in difftool's usage strings.

Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-22 17:09:02 -07:00
Bagas Sanjaya 54b4d125d5 ls-files: use imperative mood for -X and -z option description
Usage description for -X and -z options use descriptive instead of
imperative mood. Edit it for consistency with other options.

Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-22 12:07:37 -07:00
Phillip Wood 7740ac691d rebase: dereference tags
A rebase started with 'git rebase <A> <B>' is conceptually to first
checkout <B> and run 'git rebase <A>' starting from that state.  'git
rebase --abort' in the middle of such a rebase should take us back to
the state we checked out <B>.

This used to work, even when <B> is a tag that points at a commit,
until Git 2.20.0 when the command was reimplemented in C.  The command
now complains that the tag object itself cannot be checked out, which
may be technically correct but is not what the user asked to do.

Fix this old regression by using lookup_commit_reference_by_name()
when parsing <B>. The scripted version did not need to peel the tag
because the commands it passed the tag to (e.g 'git reset') peeled the
tag themselves.

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-22 12:04:52 -07:00
Phillip Wood 1d188263e0 rebase: use lookup_commit_reference_by_name()
peel_committish() appears to have been copied from the scripted rebase
but it duplicates the functionality of
lookup_commit_reference_by_name() so lets use that instead.

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-22 12:04:52 -07:00
Phillip Wood 35f070b4de rebase: use our standard error return value
Git uses −1 to signal an error. The builtin rebase converts these to
+1 all over the place using !! (presumably because the in the scripted
version an error was signalled by +1). This is confusing and clutters
the code, we only need to convert the value when the function returns.

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-22 12:04:51 -07:00
Taylor Blau 0394f8d002 builtin/multi-pack-index.c: disable top-level --[no-]progress
In a similar spirit as the previous patch, let sub-commands which
support showing or hiding a progress meter handle parsing the
`--progress` or `--no-progress` option, but do not expose it as an
option to the top-level `multi-pack-index` builtin.

Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-22 09:26:29 -07:00
Junio C Hamano c042ad5ad5 Merge branch 'js/run-command-close-packs'
The run-command API has been updated so that the callers can easily
ask the file descriptors open for packfiles to be closed immediately
before spawning commands that may trigger auto-gc.

* js/run-command-close-packs:
  Close object store closer to spawning child processes
  run_auto_maintenance(): implicitly close the object store
  run-command: offer to close the object store before running
  run-command: prettify the `RUN_COMMAND_*` flags
  pull: release packs before fetching
  commit-graph: when closing the graph, also release the slab
2021-09-20 15:20:45 -07:00
Junio C Hamano a16dd13740 Merge branch 'ds/mergies-with-sparse-index'
Various mergy operations have been prepared to work efficiently
with the sparse index.

* ds/mergies-with-sparse-index:
  sparse-index: integrate with cherry-pick and rebase
  sequencer: ensure full index if not ORT strategy
  t1092: add cherry-pick, rebase tests
  merge-ort: expand only for out-of-cone conflicts
  merge: make sparse-aware with ORT
  diff: ignore sparse paths in diffstat
2021-09-20 15:20:45 -07:00
Junio C Hamano dc89c34d9e Merge branch 'ds/sparse-index-ignored-files'
In cone mode, the sparse-index code path learned to remove ignored
files (like build artifacts) outside the sparse cone, allowing the
entire directory outside the sparse cone to be removed, which is
especially useful when the sparse patterns change.

* ds/sparse-index-ignored-files:
  sparse-checkout: clear tracked sparse dirs
  sparse-index: add SPARSE_INDEX_MEMORY_ONLY flag
  attr: be careful about sparse directories
  sparse-checkout: create helper methods
  sparse-index: use WRITE_TREE_MISSING_OK
  sparse-index: silently return when cache tree fails
  unpack-trees: fix nested sparse-dir search
  sparse-index: silently return when not using cone-mode patterns
  t7519: rewrite sparse index test
2021-09-20 15:20:44 -07:00
Junio C Hamano e78db9d303 Merge branch 'ar/submodule-run-update-procedure'
Reimplementation of parts of "git submodule" in C continues.

* ar/submodule-run-update-procedure:
  submodule--helper: run update procedures from C
2021-09-20 15:20:44 -07:00
Junio C Hamano 5331af2352 Merge branch 'ab/serve-cleanup'
Code clean-up around "git serve".

* ab/serve-cleanup:
  upload-pack: document and rename --advertise-refs
  serve.[ch]: remove "serve_options", split up --advertise-refs code
  {upload,receive}-pack tests: add --advertise-refs tests
  serve.c: move version line to advertise_capabilities()
  serve: move transfer.advertiseSID check into session_id_advertise()
  serve.[ch]: don't pass "struct strvec *keys" to commands
  serve: use designated initializers
  transport: use designated initializers
  transport: rename "fetch" in transport_vtable to "fetch_refs"
  serve: mark has_capability() as static
2021-09-20 15:20:43 -07:00
Junio C Hamano bbeca063cf Merge branch 'ar/submodule-add-more'
More parts of "git submodule add" has been rewritten in C.

* ar/submodule-add-more:
  submodule--helper: rename compute_submodule_clone_url()
  submodule--helper: remove resolve-relative-url subcommand
  submodule--helper: remove add-config subcommand
  submodule--helper: remove add-clone subcommand
  submodule--helper: convert the bulk of cmd_add() to C
  dir: libify and export helper functions from clone.c
  submodule--helper: remove repeated code in sync_submodule()
  submodule--helper: refactor resolve_relative_url() helper
  submodule--helper: add options for compute_submodule_clone_url()
2021-09-20 15:20:43 -07:00
Junio C Hamano b5a36278f4 Merge branch 'ar/submodule-add-config'
Large part of "git submodule add" gets rewritten in C.

* ar/submodule-add-config:
  submodule--helper: introduce add-config subcommand
2021-09-20 15:20:42 -07:00
Junio C Hamano 67fc02be54 Merge branch 'ab/unbundle-progress'
Add progress display to "git bundle unbundle".

* ab/unbundle-progress:
  bundle: show progress on "unbundle"
  index-pack: add --progress-title option
  bundle API: change "flags" to be "extra_index_pack_args"
  bundle API: start writing API documentation
2021-09-20 15:20:42 -07:00
Junio C Hamano a1af533323 Merge branch 'tb/pack-finalize-ordering'
The order in which various files that make up a single (conceptual)
packfile has been reevaluated and straightened up.  This matters in
correctness, as an incomplete set of files must not be shown to a
running Git.

* tb/pack-finalize-ordering:
  pack-objects: rename .idx files into place after .bitmap files
  pack-write: split up finish_tmp_packfile() function
  builtin/index-pack.c: move `.idx` files into place last
  index-pack: refactor renaming in final()
  builtin/repack.c: move `.idx` files into place last
  pack-write.c: rename `.idx` files after `*.rev`
  pack-write: refactor renaming in finish_tmp_packfile()
  bulk-checkin.c: store checksum directly
  pack.h: line-wrap the definition of finish_tmp_packfile()
2021-09-20 15:20:42 -07:00
Junio C Hamano ed8794ef7a Merge branch 'lh/systemd-timers'
"git maintenance" scheduler learned to use systemd timers as a
possible backend.

* lh/systemd-timers:
  maintenance: add support for systemd timers on Linux
  maintenance: `git maintenance run` learned `--scheduler=<scheduler>`
  cache.h: Introduce a generic "xdg_config_home_for(…)" function
2021-09-20 15:20:40 -07:00
Junio C Hamano 11e5d0a262 Merge branch 'jt/grep-wo-submodule-odb-as-alternate'
The code to make "git grep" recurse into submodules has been
updated to migrate away from the "add submodule's object store as
an alternate object store" mechanism (which is suboptimal).

* jt/grep-wo-submodule-odb-as-alternate:
  t7814: show lack of alternate ODB-adding
  submodule-config: pass repo upon blob config read
  grep: add repository to OID grep sources
  grep: allocate subrepos on heap
  grep: read submodule entry with explicit repo
  grep: typesafe versions of grep_source_init
  grep: use submodule-ODB-as-alternate lazy-addition
  submodule: lazily add submodule ODBs as alternates
2021-09-20 15:20:39 -07:00
Junio C Hamano 0649303820 Merge branch 'tb/multi-pack-bitmaps'
The reachability bitmap file used to be generated only for a single
pack, but now we've learned to generate bitmaps for history that
span across multiple packfiles.

* tb/multi-pack-bitmaps: (29 commits)
  pack-bitmap: drop bitmap_index argument from try_partial_reuse()
  pack-bitmap: drop repository argument from prepare_midx_bitmap_git()
  p5326: perf tests for MIDX bitmaps
  p5310: extract full and partial bitmap tests
  midx: respect 'GIT_TEST_MULTI_PACK_INDEX_WRITE_BITMAP'
  t7700: update to work with MIDX bitmap test knob
  t5319: don't write MIDX bitmaps in t5319
  t5310: disable GIT_TEST_MULTI_PACK_INDEX_WRITE_BITMAP
  t0410: disable GIT_TEST_MULTI_PACK_INDEX_WRITE_BITMAP
  t5326: test multi-pack bitmap behavior
  t/helper/test-read-midx.c: add --checksum mode
  t5310: move some tests to lib-bitmap.sh
  pack-bitmap: write multi-pack bitmaps
  pack-bitmap: read multi-pack bitmaps
  pack-bitmap.c: avoid redundant calls to try_partial_reuse
  pack-bitmap.c: introduce 'bitmap_is_preferred_refname()'
  pack-bitmap.c: introduce 'nth_bitmap_object_oid()'
  pack-bitmap.c: introduce 'bitmap_num_objects()'
  midx: avoid opening multiple MIDXs when writing
  midx: close linked MIDXs, avoid leaking memory
  ...
2021-09-20 15:20:39 -07:00
Junio C Hamano deec8aa2d0 Merge branch 'ps/fetch-optim'
Optimize code that handles large number of refs in the "git fetch"
code path.

* ps/fetch-optim:
  fetch: avoid second connectivity check if we already have all objects
  fetch: merge fetching and consuming refs
  fetch: refactor fetch refs to be more extendable
  fetch-pack: optimize loading of refs via commit graph
  connected: refactor iterator to return next object ID directly
  fetch: avoid unpacking headers in object existence check
  fetch: speed up lookup of want refs via commit-graph
2021-09-20 15:20:39 -07:00
Jeff King 6b58df54cf clone: handle unborn branch in bare repos
When cloning a repository with an unborn HEAD, we'll set the local HEAD
to match it only if the local repository is non-bare. This is
inconsistent with all other combinations:

  remote HEAD       | local repo | local HEAD
  -----------------------------------------------
  points to commit  | non-bare   | same as remote
  points to commit  | bare       | same as remote
  unborn            | non-bare   | same as remote
  unborn            | bare       | local default

So I don't think this is some clever or subtle behavior, but just a bug
in 4f37d45706 (clone: respect remote unborn HEAD, 2021-02-05). And it's
easy to see how we ended up there. Before that commit, the code to set
up the HEAD for an empty repo was guarded by "if (!option_bare)". That's
because the only thing it did was call install_branch_config(), and we
don't want to do so for a bare repository (unborn HEAD or not).

That commit put the handling of unborn HEADs into the same block, since
those also need to call install_branch_config(). But the unborn case has
an additional side effect of calling create_symref(), and we want that
to happen whether we are bare or not.

This patch just pulls all of the "figure out the default branch" code
out of the "!option_bare" block. Only the actual config installation is
kept there.

Note that this does mean we might allocate "ref" and not use it (if the
remote is empty but did not advertise an unborn HEAD). But that's not
really a big deal since this isn't a hot code path, and it keeps the
code simple. The alternative would be handling unborn_head_target
separately, but that gets confusing since its memory ownership is
tangled up with the "ref" variable.

There's just one new test, for the case we're fixing. The other ones in
the table are handled elsewhere (the unborn non-bare case just above,
and the actually-born cases in t5601, t5606, and t5609, as they do not
require v2's "unborn" protocol extension).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-20 14:05:36 -07:00
Junio C Hamano 93a8ed28ea Merge branch 'ab/retire-option-argument' into da/difftool
* ab/retire-option-argument:
  parse-options API: remove OPTION_ARGUMENT feature
  difftool: use run_command() API in run_file_diff()
  difftool: prepare "diff" cmdline in cmd_difftool()
  difftool: prepare "struct child_process" in cmd_difftool()
2021-09-20 11:42:34 -07:00
Junio C Hamano 04d3761db2 Merge branch 'en/am-abort-fix' into en/removing-untracked-fixes
* en/am-abort-fix:
  am: fix incorrect exit status on am fail to abort
  t4151: add a few am --abort tests
  git-am.txt: clarify --abort behavior
2021-09-20 11:22:09 -07:00
Taylor Blau d5fdf3073a builtin/commit-graph.c: don't accept common --[no-]progress
In 84e4484f12 (commit-graph: use parse_options_concat(), 2021-08-23) we
unified common options of commit-graph's subcommands into a single
"common_opts" array.

But 84e4484f12 introduced a behavior change which is to accept the
"--[no-]progress" option before any sub-commands, e.g.,

    git commit-graph --progress write ...

Prior to that commit, the above would error out with "unknown option".

There are two issues with this behavior change. First is that the
top-level --[no-]progress is not always respected. This is because
isatty(2) is performed in the sub-commands, which unconditionally
overwrites any --[no-]progress that was given at the top-level.

But the second issue is that the existing sub-commands of commit-graph
only happen to both have a sensible interpretation of what `--progress`
or `--no-progress` means. If we ever added a sub-command which didn't
have a notion of progress, we would be forced to ignore the top-level
`--[no-]progress` altogether.

Since we haven't released a version of Git that supports --[no-]progress
as a top-level option for `git commit-graph`, let's remove it.

Suggested-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-20 11:01:23 -07:00
Junio C Hamano 44257f7b52 Merge branch 'jc/prefix-filename-allocates'
Leakfix.

* jc/prefix-filename-allocates:
  hash-object: prefix_filename() returns allocated memory these days
2021-09-15 13:15:28 -07:00
Junio C Hamano e8332242b7 Merge branch 'so/diff-index-regression-fix'
Recent "diff -m" changes broke "gitk", which has been corrected.

* so/diff-index-regression-fix:
  diff-index: restore -c/--cc options handling
2021-09-15 13:15:24 -07:00
Jonathan Tan ce125d431a submodule: extract path to submodule gitdir func
We currently store each submodule gitdir in ".git/modules/<name>", but
this has problems with some submodule naming schemes, as described in a
comment in submodule_name_to_gitdir() in this patch.

Extract the determination of the location of a submodule's gitdir into
its own function submodule_name_to_gitdir(). For now, the problem
remains unsolved, but this puts us in a better position for finding a
solution.

This was motivated, at $DAYJOB, by a part of Android's repo hierarchy
[1]. In particular, there is a repo "build", and several repos of the
form "build/<name>".

This is based on earlier work by Brandon Williams [2].

[1] https://android.googlesource.com/platform/
[2] https://lore.kernel.org/git/20180808223323.79989-2-bmwill@google.com/

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-15 12:59:12 -07:00
Taylor Blau caca3c9f07 midx.c: respect 'pack.writeBitmapHashcache' when writing bitmaps
In the previous commit, the bitmap writing code learned to propagate
values from an existing hash-cache extension into the bitmap that it is
writing.

Now that that functionality exists, let's expose it by teaching the 'git
multi-pack-index' builtin to respect the `pack.writeBitmapHashCache`
option so that the hash-cache may be written at all.

Two minor points worth noting here:

  - The 'git multi-pack-index write' sub-command didn't previously read
    any configuration (instead this is handled in the base command). A
    separate handler is added here to respect this write-specific
    config option.

  - I briefly considered adding a 'bitmap_flags' field to the static
    options struct, but decided against it since it would require
    plumbing through a new parameter to the write_midx_file() function.

    Instead, a new MIDX-specific flag is added, which is translated to
    the corresponding bitmap one.

Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-14 16:34:18 -07:00
Matthias Aßhauer a3952f8e7c help: make sure local html page exists before calling external processes
We check that git.html exists, regardless of the page the user wants to open.
Checking whether the requested page exists instead gives us a smoother user
experience in two use cases:

1) The requested page doesn't exist

When calling a git command and there is an error, most users reasonably expect
git to produce an error message on the standard error stream, but in this case
we pass the filepath to git web--browse which passes it on to a browser (or a
helper program like xdg-open or start that should in turn open a browser)
without any error and many GUI based browsers or helpers won't output such a
message onto the standard error stream.

Especially the helper programs tend to show the corresponding error message in
a message box and wait for user input before exiting. This leaves users in
interactive console sessions without an error message in their console,
without a console prompt and without the help page they expected.

2) git.html is missing for some reason, but the user asked for some other page

We currently refuse to show any local html help page when we can't find
git.html. Even if the requested help page exists. If we check for the requested
page instead, we can show the user all available pages and only error out on
those that don't exist.

Signed-off-by: Matthias Aßhauer <mha1993@live.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-14 10:04:08 -07:00
Carlo Marcelo Arenas Belón 245670cd46 credential-cache: check for windows specific errors
Connect and reset errors aren't what will be expected by POSIX but
are instead compatible with the ones used by WinSock.

To avoid any possibility of confusion with other systems, checks
for disconnection and availability had been abstracted into helper
functions that are platform specific.

Signed-off-by: Carlo Marcelo Arenas Belón <carenas@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-14 09:30:54 -07:00
Miriam Rubio 911aba1420 bisect--helper: retire --bisect-next-check subcommand
After reimplementation of `git bisect run` in C,
`--bisect-next-check` subcommand is not needed anymore.

Let's remove it from options list and code.

Mentored by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Miriam Rubio <mirucam@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-13 13:37:39 -07:00
Tanushree Tumane d1bbbe45df bisect--helper: reimplement bisect_run shell function in C
Reimplement the `bisect_run()` shell function
in C and also add `--bisect-run` subcommand to
`git bisect--helper` to call it from git-bisect.sh.

Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Tanushree Tumane <tanushreetumane@gmail.com>
Signed-off-by: Miriam Rubio <mirucam@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-13 13:37:37 -07:00
Pranit Bauva 5e1f28d206 bisect--helper: reimplement bisect_visualize() shell function in C
Reimplement the `bisect_visualize()` shell function
in C and also add `--bisect-visualize` subcommand to
`git bisect--helper` to call it from git-bisect.sh.

Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Mentored-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Tanushree Tumane <tanushreetumane@gmail.com>
Signed-off-by: Miriam Rubio <mirucam@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-13 13:37:37 -07:00
Ævar Arnfjörð Bjarmason 4c25356e0e parse-options API: remove OPTION_ARGUMENT feature
As was noted in 1a85b49b87 (parse-options: make OPT_ARGUMENT() more
useful, 2019-03-14) there's only ever been one user of the
OPT_ARGUMENT(), that user was added in 20de316e33 (difftool: allow
running outside Git worktrees with --no-index, 2019-03-14).

The OPT_ARGUMENT() feature itself was added way back in
580d5bffde (parse-options: new option type to treat an option-like
parameter as an argument., 2008-03-02), but as discussed in
1a85b49b87 wasn't used until 20de316e33 in 2019.

Now that the preceding commit has migrated this code over to using
"struct strvec" to manage the "args" member of a "struct
child_process", we can just use that directly instead of relying on
OPT_ARGUMENT.

This has a minor change in behavior in that if we'll pass --no-index
we'll now always pass it as the first argument, before we'd pass it in
whatever position the caller did. Preserving this was the real value
of OPT_ARGUMENT(), but as it turns out we didn't need that either. We
can always inject it as the first argument, the other end will parse
it just the same.

Note that we cannot remove the "out" and "cpidx" members of "struct
parse_opt_ctx_t" added in 580d5bffde, while they were introduced with
OPT_ARGUMENT() we since used them for other things.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-12 23:27:38 -07:00
Ævar Arnfjörð Bjarmason cc5b594788 difftool: use run_command() API in run_file_diff()
Change the run_file_diff() function to use the run_command() API
directly, instead of invoking the run_command_v_opt_cd_env() wrapper.

This allows it, like run_dir_diff(), to use the "args" from "struct
strvec", instead of the "const char **argv" passed into
cmd_difftool(). This will be used in the subsequent commit to get rid
of OPT_ARGUMENT() from cmd_difftool().

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-12 23:27:38 -07:00
Jeff King b4c7aab7b9 difftool: prepare "diff" cmdline in cmd_difftool()
We call into either run_dir_diff() or run_file_diff(), each of which
sets up a child argv starting with "diff" and some hard-coded options
(depending on which mode we're using). Let's extract that logic into the
caller, which will make it easier to modify the options for cases which
affect both functions.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-12 23:27:38 -07:00
Ævar Arnfjörð Bjarmason ec3cc27ab0 difftool: prepare "struct child_process" in cmd_difftool()
Move the preparation of the "struct child_process" from run_dir_diff()
to its only caller, cmd_difftool(). This is in preparation for
migrating run_file_diff() to using the run_command() API directly, and
to move more of the shared setup of the two to cmd_difftool().

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-12 23:27:38 -07:00
Ævar Arnfjörð Bjarmason 78a509190d send-pack: properly use parse_options() API for usage string
When "send-pack" was changed to use the parse_options() API in
068c77a518 (builtin/send-pack.c: use parse_options API, 2015-08-19)
it was made to use one very long line, instead it should split them up
with newlines.

Furthermore we were including an inline explanation that you couldn't
combine "--all" and "<ref>", but unlike in the "blame" case this was
not preceded by an empty string.

Let's instead show that --all and <ref> can't be combined in the the
usual language of the usage syntax instead. We can make it clear that
one of the two options "--foo" and "--bar" is mandatory, but that the
two are mutually exclusive by referring to them as "( --foo | --bar
)".

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-12 18:57:30 -07:00
Ævar Arnfjörð Bjarmason 5d70198efe parse-options API users: align usage output in C-strings
In preparation for having continued usage lines properly aligned in
"git <cmd> -h" output, let's have the "[" on the second such lines
align with the "[" on the first line.

In some cases this makes the output worse, because e.g. the "git
ls-remote -h" output had been aligned to account for the extra
whitespace that the usage_with_options_internal() function in
parse-options.c would add.

In other cases such as builtin/stash.c (not changed here), we were
aligned in the C strings, but since that didn't account for the extra
padding in usage_with_options_internal() it would come out looking
misaligned, e.g. code like this:

	N_("git stash [push [-p|--patch] [-k|--[no-]keep-index] [-q|--quiet]\n"
	   "          [-u|--include-untracked] [-a|--all] [-m|--message <message>]\n"

Would emit:

   or: git stash [push [-p|--patch] [-k|--[no-]keep-index] [-q|--quiet]
          [-u|--include-untracked] [-a|--all] [-m|--message <message>]

Let's change all the usage arrays which use such continued usage
output via "\n"-embedding to be like builtin/stash.c.

This makes the output worse temporarily, but in a subsequent change
I'll improve the usage_with_options_internal() to take this into
account, at which point all of the strings being changed here will
emit prettier output.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-12 18:57:30 -07:00
Ævar Arnfjörð Bjarmason 3218cb753f gc: remove unused launchctl_get_uid() call
When the launchctl_boot_plist() function was added in
a16eb6b1ff (maintenance: skip bootout/bootstrap when plist is
registered, 2021-08-24), an unused call to launchctl_get_uid() was
added along with it. That call appears to have been copy/pasted from
launchctl_boot_plist().

Since we can remove that, we can also get rid of the "result"
variable, whose only purpose was allow for the free() between its
assignment and the return. That pattern also appears to have been
copy/pasted from launchctl_boot_plist().

As the patch shows the returned value from launchctl_get_uid() wasn't
used at all in this function. The launchctl_get_uid() function itself
just calls xstrfmt() and getuid(), neither of which have any subtle
global side-effects, so this removal is safe.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-12 16:47:18 -07:00
Ævar Arnfjörð Bjarmason b40845293b help: correct the usage string in -h and documentation
Clarify the usage string in the documentation so we group e.g. -i and
--info, and add the missing short options to the "-h" output.

The alignment of the second line is off now, but will be fixed with
another series of mine[1]. In the meantime let's just assume that fix
will make it in eventually for the purposes of this patch, if it's
misaligned for a bit it doesn't matter much.

1. https://lore.kernel.org/git/cover-0.2-00000000000-20210901T110917Z-avarab@gmail.com

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-10 15:58:00 -07:00
Elijah Newren c5ead19ea2 am: fix incorrect exit status on am fail to abort
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-10 15:51:15 -07:00
Elijah Newren bee8691f19 stash: restore untracked files AFTER restoring tracked files
If a user deletes a file and places a directory of untracked files
there, then stashes all these changes, the untracked directory of files
cannot be restored until after the corresponding file in the way is
removed.  So, restore changes to tracked files before restoring
untracked files.

There is no counterpart problem to worry about with the user deleting an
untracked file and then add a tracked one in its place.  Git does not
track untracked files, and so will not know the untracked file was
deleted, and thus won't be able to stash the removal of that file.

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-10 15:46:34 -07:00
Elijah Newren 3d40e3723b stash: avoid feeding directories to update-index
When a file is removed from the cache, but there is a file of the same
name present in the working directory, we would normally treat that file
in the working directory as untracked.  However, in the case of stash,
doing that would prevent a simple 'git stash push', because the untracked
file would be in the way of restoring the deleted file.

git stash, however, blindly assumes that whatever is in the working
directory for a deleted file is wanted and passes that path along to
update-index.  That causes problems when the working directory contains
a directory with the same name as the deleted file.  Add some code for
this special case that will avoid passing directory names to
update-index.

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-10 15:46:34 -07:00
René Scharfe 6346f704a0 index-pack: use xopen in init_thread
Support an arbitrary file descriptor expression in the semantic patch
for replacing open+die_errno with xopen, not just an identifier, and
apply it.  This makes the error message at the single affected place
more consistent and reduces code duplication.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-10 14:22:50 -07:00
Junio C Hamano 09f66eb0e2 Merge branch 'rs/show-branch-simplify'
Code cleanup.

* rs/show-branch-simplify:
  show-branch: simplify rev_is_head()
2021-09-10 11:46:31 -07:00
Junio C Hamano fd0d7036e0 Merge branch 'ab/retire-advice-config'
Code clean up to migrate callers from older advice_config[] based
API to newer advice_if_enabled() and advice_enabled() API.

* ab/retire-advice-config:
  advice: move advice.graftFileDeprecated squashing to commit.[ch]
  advice: remove use of global advice_add_embedded_repo
  advice: remove read uses of most global `advice_` variables
  advice: add enum variants for missing advice variables
2021-09-10 11:46:29 -07:00
Junio C Hamano 6d09fc54f6 Merge branch 'mk/clone-recurse-submodules'
After "git clone --recurse-submodules", all submodules are cloned
but they are not by default recursed into by other commands.  With
submodule.stickyRecursiveClone configuration set, submodule.recurse
configuration is set to true in a repository created by "clone"
with "--recurse-submodules" option.

* mk/clone-recurse-submodules:
  clone: set submodule.recurse=true if submodule.stickyRecursiveClone enabled
2021-09-10 11:46:29 -07:00
Junio C Hamano 02d263277a Merge branch 'ab/gc-log-rephrase'
A pathname in an advice message has been made cut-and-paste ready.

* ab/gc-log-rephrase:
  gc: remove trailing dot from "gc.log" line
2021-09-10 11:46:28 -07:00
Junio C Hamano febba8038d Merge branch 'tk/fast-export-anonymized-tag-fix'
The output from "git fast-export", when its anonymization feature
is in use, showed an annotated tag incorrectly.

* tk/fast-export-anonymized-tag-fix:
  fast-export: fix anonymized tag using original length
2021-09-10 11:46:27 -07:00
Junio C Hamano 1396a95ee0 Merge branch 'ab/commit-graph-usage'
Fixes on usage message from "git commit-graph".

* ab/commit-graph-usage:
  commit-graph: show "unexpected subcommand" error
  commit-graph: show usage on "commit-graph [write|verify] garbage"
  commit-graph: early exit to "usage" on !argc
  multi-pack-index: refactor "goto usage" pattern
  commit-graph: use parse_options_concat()
  commit-graph: remove redundant handling of -h
  commit-graph: define common usage with a macro
2021-09-10 11:46:25 -07:00
Junio C Hamano 9559de3b66 Merge branch 'tb/add-objects-in-unpacked-packs-simplify'
Code simplification with reduced memory usage.

* tb/add-objects-in-unpacked-packs-simplify:
  builtin/pack-objects.c: remove duplicate hash lookup
  builtin/pack-objects.c: simplify add_objects_in_unpacked_packs()
  object-store.h: teach for_each_packed_object to ignore kept packs
2021-09-10 11:46:21 -07:00
Junio C Hamano 87d4aed743 Merge branch 'ps/fetch-omit-formatting-under-quiet'
"git fetch --quiet" optimization to avoid useless computation of
info that will never be displayed.

* ps/fetch-omit-formatting-under-quiet:
  fetch: skip formatting updated refs with `--quiet`
2021-09-10 11:46:20 -07:00
Junio C Hamano 6c083b7619 Merge branch 'js/advise-when-skipping-cherry-picked'
"git rebase" by default skips changes that are equivalent to
commits that are already in the history the branch is rebased onto;
give messages when this happens to let the users be aware of
skipped commits, and also teach them how to tell "rebase" to keep
duplicated changes.

* js/advise-when-skipping-cherry-picked:
  sequencer: advise if skipping cherry-picked commit
2021-09-10 11:46:19 -07:00
Ævar Arnfjörð Bjarmason 4bc1fd6e39 pack-objects: rename .idx files into place after .bitmap files
In preceding commits the race of renaming .idx files in place before
.rev files and other auxiliary files was fixed in pack-write.c's
finish_tmp_packfile(), builtin/repack.c's "struct exts", and
builtin/index-pack.c's final(). As noted in the change to pack-write.c
we left in place the issue of writing *.bitmap files after the *.idx,
let's fix that issue.

See 7cc8f97108 (pack-objects: implement bitmap writing, 2013-12-21)
for commentary at the time when *.bitmap was implemented about how
those files are written out, nothing in that commit contradicts what's
being done here.

Note that this commit and preceding ones only close any race condition
with *.idx files being written before their auxiliary files if we're
optimistic about our lack of fsync()-ing in this are not tripping us
over. See the thread at [1] for a rabbit hole of various discussions
about filesystem races in the face of doing and not doing fsync() (and
if doing fsync(), not doing it properly).

We may want to fsync the containing directory once after renaming the
*.idx file into place, but that is outside the scope of this series.

1. https://lore.kernel.org/git/8735qgkvv1.fsf@evledraar.gmail.com/

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-09 18:23:11 -07:00
Ævar Arnfjörð Bjarmason 2ec02dd5a8 pack-write: split up finish_tmp_packfile() function
Split up the finish_tmp_packfile() function and use the split-up version
in pack-objects.c in preparation for moving the step of renaming the
*.idx file later as part of a function change.

Since the only other caller of finish_tmp_packfile() was in
bulk-checkin.c, and it won't be needing a change to its *.idx renaming,
provide a thin wrapper for the old function as a static function in that
file. If other callers end up needing the simpler version it could be
moved back to "pack-write.c" and "pack.h".

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-09 18:23:11 -07:00
Taylor Blau 522a5c2cf5 builtin/index-pack.c: move .idx files into place last
In a similar spirit as preceding patches to `git repack` and `git
pack-objects`, fix the identical problem in `git index-pack`.

Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-09 18:23:11 -07:00
Ævar Arnfjörð Bjarmason 8737dab346 index-pack: refactor renaming in final()
Refactor the renaming in final() into a helper function, this is
similar in spirit to a preceding refactoring of finish_tmp_packfile()
in pack-write.c.

Before e37d0b8730 (builtin/index-pack.c: write reverse indexes,
2021-01-25) it probably wasn't worth it to have this sort of helper,
due to the differing "else if" case for "pack" files v.s. "idx" files.

But since we've got "rev" as well now, let's do the renaming via a
helper, this is both a net decrease in lines, and improves the
readability, since we can easily see at a glance that the logic for
writing these three types of files is exactly the same, aside from the
obviously differing cases of "*final_name" being NULL, and
"make_read_only_if_same" being different.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-09 18:23:11 -07:00
Taylor Blau 4e58cedd94 builtin/repack.c: move .idx files into place last
In a similar spirit as the previous patch, fix the identical problem
from `git repack` (which invokes `pack-objects` with a temporary
location for output, and then moves the files into their final locations
itself).

Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-09 18:23:11 -07:00
Ævar Arnfjörð Bjarmason 66833f0e70 pack-write: refactor renaming in finish_tmp_packfile()
Refactor the renaming in finish_tmp_packfile() into a helper function.
The callers are now expected to pass a "name_buffer" ending in
"pack-OID." instead of the previous "pack-", we then append "pack",
"idx" or "rev" to it.

By doing the strbuf_setlen() in rename_tmp_packfile() we reuse the
buffer and avoid the repeated allocations we'd get if that function had
its own temporary "struct strbuf".

This approach of reusing the buffer does make the last user in
pack-object.c's write_pack_file() slightly awkward, since we needlessly
do a strbuf_setlen() before calling strbuf_release() for consistency. In
subsequent changes we'll move that bitmap writing code around, so let's
not skip the strbuf_setlen() now.

The previous strbuf_reset() idiom originated with 5889271114
(finish_tmp_packfile():use strbuf for pathname construction,
2014-03-03), which in turn was a minimal adjustment of pre-strbuf code
added in 0e990530ae (finish_tmp_packfile(): a helper function,
2011-10-28).

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-09 18:23:11 -07:00
Derrick Stolee 516680ba77 sparse-index: integrate with cherry-pick and rebase
The hard work was already done with 'git merge' and the ORT strategy.
Just add extra tests to see that we get the expected results in the
non-conflict cases.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-09 15:49:05 -07:00
Derrick Stolee a33806398a merge: make sparse-aware with ORT
Allow 'git merge' to operate without expanding a sparse index, at least
not immediately. The index still will be expanded in a few cases:

1. If the merge strategy is 'recursive', then we enable
   command_requires_full_index at the start of the merge_recursive()
   method. We expect sparse-index users to also have the 'ort' strategy
   enabled.

2. With the 'ort' strategy, if the merge results in a conflicted file,
   then we expand the index before updating the working tree. The loop
   that iterates over the worktree replaces index entries and tracks
   'origintal_cache_nr' which can become completely wrong if the index
   expands in the middle of the operation. This safety valve is
   important before that loop starts. A later change will focus this
   to only expand if we indeed have a conflict outside of the
   sparse-checkout cone.

3. Other merge strategies are executed as a 'git merge-X' subcommand,
   and those strategies are currently protected with the
   'command_requires_full_index' guard.

Some test updates are required, including a mistaken 'git checkout -b'
that did not specify the base branch, causing merges to be fast-forward
merges.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-09 15:49:04 -07:00
Jonathan Tan 8eb8dcf946 repository: support unabsorbed in repo_submodule_init
In preparation for a subsequent commit that migrates code using
add_submodule_odb() to repo_submodule_init(), teach
repo_submodule_init() to support submodules with unabsorbed gitdirs.
(See the documentation for "git submodule absorbgitdirs" for more
information about absorbed and unabsorbed gitdirs.)

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-09 14:09:30 -07:00
Johannes Schindelin c4dee2c085 Close object store closer to spawning child processes
In many cases where we spawned child processes that _may_ trigger a
repack, we explicitly closed the object store first (so that the
`repack` process can delete the `.pack` files, which would otherwise not
be possible on Windows since files cannot be deleted as long as they as
still in use).

Wherever possible, we now use the new `close_object_store` bit of the
`run_command()` API, to delay closing the object store even further.
This makes the code easier to maintain because it is now more obvious
that we only release those file handles because of those child
processes.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-09 12:56:11 -07:00
Johannes Schindelin 5a22a334cb run_auto_maintenance(): implicitly close the object store
Before spawning the auto maintenance, we need to make sure that we
release all open file handles to all the `.pack` files (and MIDX files
and commit-graph files and...) so that the maintenance process has the
freedom to delete those files.

So far, we did this manually every time before calling
`run_auto_maintenance()`. With the new `close_object_store` flag, we can
do that implicitly in that function, which is more robust because future
callers won't be able to forget to close the object store.

Note: this changes behavior slightly, as we previously _always_ closed
the object store, but now we only close the object store when actually
running the auto maintenance. In practice, this should not matter (if
anything, it might speed up operations where auto maintenance is
disabled).

Suggested-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-09 12:56:11 -07:00
Junio C Hamano cfba19618f Merge branch 'sg/column-nl'
The parser for the "--nl" option of "git column" has been
corrected.

* sg/column-nl:
  column: fix parsing of the '--nl' option
2021-09-08 13:30:34 -07:00
Junio C Hamano ec8d24f05d Merge branch 'rs/branch-allow-deleting-dangling'
"git branch -D <branch>" used to refuse to remove a broken branch
ref that points at a missing commit, which has been corrected.

* rs/branch-allow-deleting-dangling:
  branch: allow deleting dangling branches with --force
2021-09-08 13:30:32 -07:00
Junio C Hamano f0d795428e Merge branch 'mt/quiet-with-delayed-checkout'
The delayed checkout code path in "git checkout" etc. were chatty
even when --quiet and/or --no-progress options were given.

* mt/quiet-with-delayed-checkout:
  checkout: make delayed checkout respect --quiet and --no-progress
2021-09-08 13:30:32 -07:00
Junio C Hamano 7b06222619 Merge branch 'rs/xopen-reports-open-failures'
Error diagnostics improvement.

* rs/xopen-reports-open-failures:
  use xopen() to handle fatal open(2) failures
  xopen: explicitly report creation failures
2021-09-08 13:30:32 -07:00
Junio C Hamano 4293c057dc Merge branch 'js/maintenance-launchctl-fix'
"git maintenance" scheduler fix for macOS.

* js/maintenance-launchctl-fix:
  maintenance: skip bootout/bootstrap when plist is registered
  maintenance: create `launchctl` configuration using a lock file
2021-09-08 13:30:29 -07:00
Junio C Hamano 31e4a0db03 Merge branch 'ab/rebase-fatal-fatal-fix'
Error message fix.

* ab/rebase-fatal-fatal-fix:
  rebase: emit one "fatal" in "fatal: fatal: <error>"
2021-09-08 13:30:29 -07:00
Junio C Hamano 63ddde68cd Merge branch 'ab/ls-remote-packet-trace'
Debugging aid fix.

* ab/ls-remote-packet-trace:
  ls-remote: set packet_trace_identity(<name>)
2021-09-08 13:30:28 -07:00
Johannes Schindelin 7e44ff7a39 pull: release packs before fetching
On Windows, files cannot be removed nor renamed if there are still
handles held by a process. To remedy that, we try to release all open
handles to any `.pack` file before e.g. repacking (which would want to
remove the original `.pack` file(s) after it is done).

Since the `read_cache_unmerged()` and/or the `get_oid()` call in `git
pull` can cause `.pack` files to be opened, we need to release the open
handles before calling `git fetch`: the latter process might want to
spawn an auto-gc, which in turn might want to repack the objects.

This commit is similar in spirit to 5bdece0d70 (gc/repack: release
packs when needed, 2018-12-15).

This fixes https://github.com/git-for-windows/git/issues/3336.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-08 12:17:15 -07:00
Jonathan Tan 0693806bf8 grep: add repository to OID grep sources
Record the repository whenever an OID grep source is created, and teach
the worker threads to explicitly provide the repository when accessing
objects.

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Reviewed-by: Matheus Tavares <matheus.bernardino@usp.br>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-08 11:48:05 -07:00
Jonathan Tan dd45471a37 grep: allocate subrepos on heap
Currently, struct repository objects corresponding to submodules are
allocated on the stack in grep_submodule(). This currently works because
they will not be used once grep_submodule() exits, but a subsequent
patch will require these structs to be accessible for longer (perhaps
even in another thread). Allocate them on the heap and clear them only
at the very end.

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Reviewed-by: Matheus Tavares <matheus.bernardino@usp.br>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-08 11:48:02 -07:00
Jonathan Tan 78ca584f1c grep: read submodule entry with explicit repo
Replace an existing parse_object_or_die() call (which implicitly works
on the_repository) with a function call that allows a repository to be
passed in. There is no such direct equivalent to parse_object_or_die(),
but we only need the type of the object, so replace with
oid_object_info().

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Reviewed-by: Emily Shaffer <emilyshaffer@google.com>
Reviewed-by: Matheus Tavares <matheus.bernardino@usp.br>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-08 11:47:59 -07:00
Jonathan Tan 50d92b5f03 grep: typesafe versions of grep_source_init
grep_source_init() can create "struct grep_source" objects and,
depending on the value of the type passed, some void-pointer parameters have
different meanings. Because one of these types (GREP_SOURCE_OID) will
require an additional parameter in a subsequent patch, take the
opportunity to increase clarity and type safety by replacing this
function with individual functions for each type.

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Reviewed-by: Matheus Tavares <matheus.bernardino@usp.br>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-08 11:47:55 -07:00
Jonathan Tan 8d33c3af0b grep: use submodule-ODB-as-alternate lazy-addition
In the parent commit, Git was taught to add submodule ODBs as alternates
lazily, but grep does not use this because it computes the path to add
directly, not going through add_submodule_odb(). Add an equivalent to
add_submodule_odb() that takes the exact ODB path and teach grep to use
it.

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Reviewed-by: Emily Shaffer <emilyshaffer@google.com>
Reviewed-by: Matheus Tavares <matheus.bernardino@usp.br>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-08 11:47:49 -07:00
Derrick Stolee 55dfcf9591 sparse-checkout: clear tracked sparse dirs
When changing the scope of a sparse-checkout using cone mode, we might
have some tracked directories go out of scope. The current logic removes
the tracked files from within those directories, but leaves the ignored
files within those directories. This is a bit unexpected to users who
have given input to Git saying they don't need those directories
anymore.

This is something that is new to the cone mode pattern type: the user
has explicitly said "I want these directories and _not_ those
directories." The typical sparse-checkout patterns more generally apply
to "I want files with with these patterns" so it is natural to leave
ignored files as they are. This focus on directories in cone mode
provides us an opportunity to change the behavior.

Leaving these ignored files in the sparse directories makes it
impossible to gain performance benefits in the sparse index. When we
track into these directories, we need to know if the files are ignored
or not, which might depend on the _tracked_ .gitignore file(s) within
the sparse directory. This depends on the indexed version of the file,
so the sparse directory must be expanded.

We must take special care to look for untracked, non-ignored files in
these directories before deleting them. We do not want to delete any
meaningful work that the users were doing in those directories and
perhaps forgot to add and commit before switching sparse-checkout
definitions. Since those untracked files might be code files that
generated ignored build output, also do not delete any ignored files
from these directories in that case. The users can recover their state
by resetting their sparse-checkout definition to include that directory
and continue. Alternatively, they can see the warning that is presented
and delete the directory themselves to regain the performance they
expect.

By deleting the sparse directories when changing scope (or running 'git
sparse-checkout reapply') we regain these performance benefits as if the
repository was in a clean state.

Since these ignored files are frequently build output or helper files
from IDEs, the users should not need the files now that the tracked
files are removed. If the tracked files reappear, then they will have
newer timestamps than the build artifacts, so the artifacts will need to
be regenerated anyway.

Use the sparse-index as a data structure in order to find the sparse
directories that can be safely deleted. Re-expand the index to a full
one if it was full before.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-07 22:41:10 -07:00
Derrick Stolee 02155c8c00 sparse-checkout: create helper methods
As we integrate the sparse index into more builtins, we occasionally
need to check the sparse-checkout patterns to see if a path is within
the sparse-checkout cone. Create some helper methods that help
initialize the patterns and check for pattern matching to make this
easier.

The existing callers of commands like get_sparse_checkout_patterns() use
a custom 'struct pattern_list' that is not necessarily the one in the
'struct index_state', so there are not many previous uses that could
adopt these helpers. There are just two in builtin/add.c and
sparse-index.c that can use path_in_sparse_checkout().

We add a path_in_cone_mode_sparse_checkout() as well that will only
return false if the path is outside of the sparse-checkout definition
_and_ the sparse-checkout patterns are in cone mode.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-07 22:41:10 -07:00