Commit graph

3579 commits

Author SHA1 Message Date
Junio C Hamano
72871b198f Merge branch 'ab/remove-implicit-use-of-the-repository'
Code clean-up around the use of the_repository.

* ab/remove-implicit-use-of-the-repository:
  libs: use "struct repository *" argument, not "the_repository"
  post-cocci: adjust comments for recent repo_* migration
  cocci: apply the "revision.h" part of "the_repository.pending"
  cocci: apply the "rerere.h" part of "the_repository.pending"
  cocci: apply the "refs.h" part of "the_repository.pending"
  cocci: apply the "promisor-remote.h" part of "the_repository.pending"
  cocci: apply the "packfile.h" part of "the_repository.pending"
  cocci: apply the "pretty.h" part of "the_repository.pending"
  cocci: apply the "object-store.h" part of "the_repository.pending"
  cocci: apply the "diff.h" part of "the_repository.pending"
  cocci: apply the "commit.h" part of "the_repository.pending"
  cocci: apply the "commit-reach.h" part of "the_repository.pending"
  cocci: apply the "cache.h" part of "the_repository.pending"
  cocci: add missing "the_repository" macros to "pending"
  cocci: sort "the_repository" rules by header
  cocci: fix incorrect & verbose "the_repository" rules
  cocci: remove dead rule from "the_repository.pending.cocci"
2023-04-06 13:38:30 -07:00
M Hickford
488d9d52be credential/wincred: store password_expiry_utc
This attribute is important when storing OAuth credentials which may
expire after as little as one hour. d208bfdf (credential: new attribute
password_expiry_utc, 2023-02-18) added support for this attribute in
general so that individual credential backend like wincred can use it.

Signed-off-by: M Hickford <mirth.hickford@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-04-03 09:59:52 -07:00
Junio C Hamano
6041a13ec2 Merge branch 'fc/completion-colors-do-not-need-prompt-command'
Lift the limitation that colored prompts can only be used with
PROMPT_COMMAND mode.

* fc/completion-colors-do-not-need-prompt-command:
  completion: prompt: use generic colors
2023-03-28 10:51:52 -07:00
Ævar Arnfjörð Bjarmason
035c7de9e9 cocci: apply the "revision.h" part of "the_repository.pending"
Apply the part of "the_repository.pending.cocci" pertaining to
"revision.h".

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-03-28 07:36:46 -07:00
Ævar Arnfjörð Bjarmason
b26a71b1be cocci: apply the "rerere.h" part of "the_repository.pending"
Apply the part of "the_repository.pending.cocci" pertaining to
"rerere.h".

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-03-28 07:36:46 -07:00
Ævar Arnfjörð Bjarmason
12cb1c10a6 cocci: apply the "refs.h" part of "the_repository.pending"
Apply the part of "the_repository.pending.cocci" pertaining to
"refs.h".

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-03-28 07:36:46 -07:00
Ævar Arnfjörð Bjarmason
a5183d7696 cocci: apply the "promisor-remote.h" part of "the_repository.pending"
Apply the part of "the_repository.pending.cocci" pertaining to
"promisor-remote.h".

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-03-28 07:36:46 -07:00
Ævar Arnfjörð Bjarmason
afe27c8894 cocci: apply the "packfile.h" part of "the_repository.pending"
Apply the part of "the_repository.pending.cocci" pertaining to
"packfile.h".

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-03-28 07:36:45 -07:00
Ævar Arnfjörð Bjarmason
bab821646a cocci: apply the "pretty.h" part of "the_repository.pending"
Apply the part of "the_repository.pending.cocci" pertaining to
"pretty.h".

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-03-28 07:36:45 -07:00
Ævar Arnfjörð Bjarmason
bc726bd075 cocci: apply the "object-store.h" part of "the_repository.pending"
Apply the part of "the_repository.pending.cocci" pertaining to
"object-store.h".

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-03-28 07:36:45 -07:00
Ævar Arnfjörð Bjarmason
085390328f cocci: apply the "diff.h" part of "the_repository.pending"
Apply the part of "the_repository.pending.cocci" pertaining to
"diff.h".

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-03-28 07:36:45 -07:00
Ævar Arnfjörð Bjarmason
ecb5091fd4 cocci: apply the "commit.h" part of "the_repository.pending"
Apply the part of "the_repository.pending.cocci" pertaining to
"commit.h".

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-03-28 07:36:45 -07:00
Ævar Arnfjörð Bjarmason
cb338c23d6 cocci: apply the "commit-reach.h" part of "the_repository.pending"
Apply the part of "the_repository.pending.cocci" pertaining to
"commit-reach.h".

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-03-28 07:36:36 -07:00
Ævar Arnfjörð Bjarmason
d850b7a545 cocci: apply the "cache.h" part of "the_repository.pending"
Apply the part of "the_repository.pending.cocci" pertaining to
"cache.h".

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-03-28 07:36:36 -07:00
Ævar Arnfjörð Bjarmason
7258e892d2 cocci: add missing "the_repository" macros to "pending"
In the case of diff.h, rerere.h and revision.h the macros were added
in [1], [2] and [3] when "the_repository.pending.cocci" didn't
exist. None of the subsequently added migration rules covered
them. Let's add those missing rules.

In the case of macros in "cache.h", "commit.h", "packfile.h",
"promisor-remote.h" and "refs.h" those aren't guarded by
"NO_THE_REPOSITORY_COMPATIBILITY_MACROS", but they're also macros that
add "the_repository" as the first argument, so we should migrate away
from them.

1. 2abf350385 (revision.c: remove implicit dependency on the_index,
   2018-09-21)
2. e675765235 (diff.c: remove implicit dependency on the_index,
   2018-09-21)
3. 35843b1123 (rerere.c: remove implicit dependency on the_index,
   2018-09-21)

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-03-28 07:36:36 -07:00
Ævar Arnfjörð Bjarmason
5978de2031 cocci: sort "the_repository" rules by header
Sort the "the_repository.pending.cocci" file by which header the
macros are in, and add a comment to that effect in front of the
rules. This will make subsequent commits easier to follow, as we'll be
applying these rules on a header-by-header basis.

Once we've fully applied "the_repository.pending.cocci" we'll keep
this rules around for a while in "the_repository.cocci", to help any
outstanding topics and out-of-tree code to resolve textual or semantic
conflicts with these changes, but eventually we'll remove the
"the_repository.cocci" as a follow-up.

So even if some of these functions are subsequently moved and/or split
into other or new headers there's no risk of this becoming stale, if
and when that happens the we should be removing these rules anyway.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-03-28 07:36:36 -07:00
Ævar Arnfjörð Bjarmason
6f1436ba2a cocci: fix incorrect & verbose "the_repository" rules
When these rules started being added in [1] they didn't use a ";"
after the ")", and would thus catch uses of these macros within
expressions. But as of [2] the new additions were broken in that
they'd only match a subset of the users of these macros.

Rather than narrowly fixing that, let's have these use the much less
verbose pattern introduced in my recent [3]: There's no need to
exhaustively enumerate arguments if we use the "..." syntax. This
means that we can fold all of these different rules into one.

1. afd69dcc21 (object-store: prepare read_object_file to deal with
   any repo, 2018-11-13)
2. 21a9651ba3 (commit-reach: prepare get_merge_bases to handle any
   repo, 2018-11-13)
3. 0e6550a2c6 (cocci: add a index-compatibility.pending.cocci,
   2022-11-19)

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-03-28 07:36:36 -07:00
Ævar Arnfjörð Bjarmason
49c2d93ecf cocci: remove dead rule from "the_repository.pending.cocci"
The "parse_commit_gently" macro went away in [1], so we don't need to
carry this for its migration.

1. ea3f7e598c (revision: use repository from rev_info when parsing
   commits, 2020-06-23)

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-03-28 07:36:36 -07:00
M Hickford
818b4f823f credential/wincred: include wincred.h
Delete redundant definitions. Mingw-w64 has wincred.h since 2007 [1].

[1] 9d937a7f4f/mingw-w64-headers/include/wincred.h

Signed-off-by: M Hickford <mirth.hickford@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-03-27 15:21:13 -07:00
Felipe Contreras
7ee1af8cb8 completion: prompt: use generic colors
When the prompt command mode was introduced in 1bfc51ac81 (Allow
__git_ps1 to be used in PROMPT_COMMAND, 2012-10-10), the assumption was
that it was necessary in order to properly add colors to PS1 in bash,
but this wasn't true.

It's true that the \[ \] markers add the information needed to properly
calculate the width of the prompt, and they have to be added directly to
PS1, a function returning them doesn't work.

But that is because bash coverts the \[ \] markers in PS1 to \001 \002,
which is what readline ultimately needs in order to calculate the width.

We don't need bash to do this conversion, we can use \001 \002
ourselves, and then the prompt command mode is not necessary to display
colors.

This is what functions returning colors are supposed to do [1].

[1] http://mywiki.wooledge.org/BashFAQ/053

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Tested-by: Joakim Petersen <joak-pet@online.no>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-03-16 15:58:22 -07:00
Felipe Contreras
90ff7c9898 test: don't print aggregate-results command
There's no value in it.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-03-09 14:57:57 -08:00
Felipe Contreras
5d1d62e875 test: simplify counts aggregation
When the list of files as input was implemented in 6508eedf67
(t/aggregate-results: accomodate systems with small max argument list
length, 2010-06-01), a much simpler solution wasn't considered.

Let's just pass the directory as an argument.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-03-09 14:57:55 -08:00
Ævar Arnfjörð Bjarmason
dfd0a89374 cocci & cache.h: remove "USE_THE_INDEX_COMPATIBILITY_MACROS"
Have the last users of "USE_THE_INDEX_COMPATIBILITY_MACROS" use the
underlying *_index() variants instead. Now all previous users of
"USE_THE_INDEX_COMPATIBILITY_MACROS" have been migrated away from the
wrapper macros, and if applicable to use the "USE_THE_INDEX_VARIABLE"
added in [1].

Let's leave the "index-compatibility.cocci" in place, even though it
won't be doing anything on "master". It will benefit any out-of-tree
code that need to use these compatibility macros. We can eventually
remove it.

1. bdafeae0b9 (cache.h & test-tool.h: add & use
   "USE_THE_INDEX_VARIABLE", 2022-11-19)

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-02-10 11:38:40 -08:00
Ævar Arnfjörð Bjarmason
fcb864bce7 cache-tree API: remove redundant update_main_cache_tree()
Remove the redundant update_main_cache_tree() function, and make its
users use cache_tree_update() instead.

The behavior of populating the "the_index.cache_tree" if it wasn't
present already was needed when this function was introduced in [1],
but it hasn't been needed since [2]; The "cache_tree_update()" will
now lazy-allocate, so there's no need for the wrapper.

1. 996277c520 (Refactor cache_tree_update idiom from commit,
   2011-12-06)
2. fb0882648e (cache-tree: clean up cache_tree_update(), 2021-01-23)

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-02-10 11:38:14 -08:00
Ævar Arnfjörð Bjarmason
99370863e2 cocci & cache-tree.h: migrate "write_cache_as_tree" to "*_index_*"
Add a trivial rule for "write_cache_as_tree" to
"index-compatibility.cocci", and apply it. This was left out of the
rules added in 0e6550a2c6 (cocci: add a
index-compatibility.pending.cocci, 2022-11-19) because this
compatibility wrapper lived in "cache-tree.h", not "cache.h"

But it's like the other "USE_THE_INDEX_COMPATIBILITY_MACROS", so let's
migrate it too.

The replacement of "USE_THE_INDEX_COMPATIBILITY_MACROS" here with
"USE_THE_INDEX_VARIABLE" is a manual change on top, now that these
files only use "&the_index", and don't need any compatibility
macros (or functions).

The wrapping of some argument lists is likewise manual, as coccinelle
would otherwise give us overly long argument lists.

The reason for putting the "O" in the cocci rule on the "-" and "+"
lines is because I couldn't get correct whitespacing otherwise,
i.e. I'd end up with "oid,&the_index", not "oid, &the_index".

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-02-10 11:37:49 -08:00
Ævar Arnfjörð Bjarmason
babed893f5 cocci & cache.h: apply pending "index_cache_pos" rule
Apply the rule added in [1] to change "cache_name_pos" to
"index_name_pos", which allows us to get rid of another
"USE_THE_INDEX_COMPATIBILITY_MACROS" macro.

The replacement of "USE_THE_INDEX_COMPATIBILITY_MACROS" here with
"USE_THE_INDEX_VARIABLE" is a manual change on top, now that these
files only use "&the_index", and don't need any compatibility
macros (or functions).

1. 0e6550a2c6 (cocci: add a index-compatibility.pending.cocci,
   2022-11-19)

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-02-10 11:37:27 -08:00
Ævar Arnfjörð Bjarmason
cec13b9514 cocci & cache.h: fully apply "active_nr" part of index-compatibility
Apply the "active_nr" part of "index-compatibility.pending.cocci",
which was left out in [1] due to an in-flight conflict. As of [2] the
topic we conflicted with has been merged to "master", so we can fully
apply this rule.

1. dc594180d9 (cocci & cache.h: apply variable section of "pending"
   index-compatibility, 2022-11-19)
2. 9ea1378d04 (Merge branch 'ab/various-leak-fixes', 2022-12-14)

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-02-10 11:31:18 -08:00
René Scharfe
6e57841096 use DUP_ARRAY
Add a semantic patch for replace ALLOC_ARRAY+COPY_ARRAY with DUP_ARRAY
to reduce code duplication and apply its results.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-01-09 13:28:36 +09:00
Junio C Hamano
053650ddad Merge branch 'aw/complete-case-insensitive'
Introduce a case insensitive mode to the Bash completion helpers.

* aw/complete-case-insensitive:
  completion: add case-insensitive match of pseudorefs
  completion: add optional ignore-case when matching refs
2022-12-19 11:46:18 +09:00
Junio C Hamano
06ae40f6e5 Merge branch 'yn/git-jump-emacs'
"git jump" (in contrib/) learned to present the "quickfix list" to
its standard output (instead of letting it consumed by the editor
it invokes), and learned to also drive emacs/emacsclient.

* yn/git-jump-emacs:
  git-jump: invoke emacs/emacsclient
  git-jump: move valid-mode check earlier
  git-jump: add an optional argument '--stdout'
2022-12-14 15:55:46 +09:00
Junio C Hamano
805265fcf7 Merge branch 'ab/fewer-the-index-macros'
Squelch warnings from Coccinelle

* ab/fewer-the-index-macros:
  cocci: avoid "should ... be a metavariable" warnings
2022-12-01 18:38:07 +09:00
Ævar Arnfjörð Bjarmason
cddd68ae33 cocci: avoid "should ... be a metavariable" warnings
Since [1] running "make coccicheck" has resulted in [2] being emitted
to the *.log files for the "spatch" run, and in the case of "make
coccicheck-test" we'd emit these to the user's terminal.

Nothing was broken as a result, but let's refactor the relevant rules
to eliminate the ambiguity between a possible variable and an
identifier.

1. 0e6550a2c6 (cocci: add a index-compatibility.pending.cocci,
   2022-11-19)
2. warning: line 257: should active_cache be a metavariable?
   warning: line 260: should active_cache_changed be a metavariable?
   warning: line 263: should active_cache_tree be a metavariable?
   warning: line 271: should active_nr be a metavariable?

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-12-01 07:25:57 +09:00
Alison Winters
9de31f7bd2 completion: add case-insensitive match of pseudorefs
When GIT_COMPLETION_IGNORE_CASE is set, also allow lowercase completion
text like "head" to match uppercase HEAD and other pseudorefs.

Signed-off-by: Alison Winters <alisonatwork@outlook.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-11-30 09:58:06 +09:00
Alison Winters
9bab766fb2 completion: add optional ignore-case when matching refs
If GIT_COMPLETION_IGNORE_CASE is set, --ignore-case will be added to
git for-each-ref calls so that refs can be matched case insensitively,
even when running on case sensitive filesystems.

Signed-off-by: Alison Winters <alisonatwork@outlook.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-11-30 09:58:06 +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
Yoichi Nakayama
9508dfd9f5 git-jump: invoke emacs/emacsclient
It works with GIT_EDITOR="emacs", "emacsclient" or "emacsclient -t"

Signed-off-by: Yoichi Nakayama <yoichi.nakayama@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-11-27 10:49:51 +09:00
Jeff King
64685cb855 git-jump: move valid-mode check earlier
We check if the "mode" argument supplied by the user is valid by seeing
if we have a mode_$mode function defined. But we don't do that until
after creating the tempfile. This is wasteful (we create a tempfile but
never use it), and makes it harder to add new options (the recent stdout
option exits before creating the tempfile, so it misses the check and
"git jump --stdout foo" will produce "git-jump: 92: mode_foo: not found"
rather than the regular usage message).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-11-27 10:49:51 +09:00
Yoichi Nakayama
cfb7b3b391 git-jump: add an optional argument '--stdout'
It can be used with M-x grep on Emacs.

Signed-off-by: Yoichi Nakayama <yoichi.nakayama@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-11-27 10:49:51 +09:00
Junio C Hamano
4b76998ff0 Merge branch 'ab/coccicheck-incremental'
"make coccicheck" is time consuming. It has been made to run more
incrementally.

* ab/coccicheck-incremental:
  Makefile: don't create a ".build/.build/" for cocci, fix output
  spatchcache: add a ccache-alike for "spatch"
  cocci: run against a generated ALL.cocci
  cocci rules: remove <id>'s from rules that don't need them
  Makefile: copy contrib/coccinelle/*.cocci to build/
  cocci: optimistically use COMPUTE_HEADER_DEPENDENCIES
  cocci: make "coccicheck" rule incremental
  cocci: split off "--all-includes" from SPATCH_FLAGS
  cocci: split off include-less "tests" from SPATCH_FLAGS
  Makefile: split off SPATCH_BATCH_SIZE comment from "cocci" heading
  Makefile: have "coccicheck" re-run if flags change
  Makefile: add ability to TAB-complete cocci *.patch rules
  cocci rules: remove unused "F" metavariable from pending rule
  Makefile + shared.mak: rename and indent $(QUIET_SPATCH_T)
2022-11-23 11:22:23 +09:00
Ævar Arnfjörð Bjarmason
07047d6829 cocci: apply "pending" index-compatibility to some "builtin/*.c"
Apply "index-compatibility.pending.cocci" rule to "builtin/*", but
exclude those where we conflict with in-flight changes.

As a result some of them end up using only "the_index", so let's have
them use the more narrow "USE_THE_INDEX_VARIABLE" rather than
"USE_THE_INDEX_COMPATIBILITY_MACROS".

Manual changes not made by coccinelle, that were squashed in:

* Whitespace-wrap argument lists for repo_hold_locked_index(),
  repo_read_index_preload() and repo_refresh_and_write_index(), in cases
  where the line became too long after the transformation.
* Change "refresh_cache()" to "refresh_index()" in a comment in
  "builtin/update-index.c".
* For those whose call was followed by perror("<macro-name>"), change
  it to perror("<function-name>"), referring to the new function.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-11-21 12:06:15 +09:00
Ævar Arnfjörð Bjarmason
dc594180d9 cocci & cache.h: apply variable section of "pending" index-compatibility
Mostly apply the part of "index-compatibility.pending.cocci" that
renames the global variables like "active_nr", which are a shorthand
to referencing (in that case) a struct member as "the_index.cache_nr".

In doing so move more of "index-compatibility.pending.cocci" to
"index-compatibility.cocci".

In the case of "active_nr" we'd have a textual conflict with
"ab/various-leak-fixes" in "next"[1]. Let's exclude that specific case
while moving the rule over from "pending".

1. 407b94280f (commit: discard partial cache before (re-)reading it,
   2022-11-08)

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-11-21 12:06:15 +09:00
Ævar Arnfjörð Bjarmason
031b2033e0 cocci & cache.h: apply a selection of "pending" index-compatibility
Apply a selection of rules in "index-compatibility.pending.cocci"
tree-wide, and in doing so migrate them to
"index-compatibility.cocci".

As in preceding commits the only manual changes here are the macro
removals in "cache.h", and the update to the '*.cocci" rules. The rest
of the C code changes are the result of applying those updated rules.

Move rules for some rarely used cache compatibility macros from
"index-compatibility.pending.cocci" to "index-compatibility.cocci" and
apply them.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-11-21 12:06:15 +09:00
Ævar Arnfjörð Bjarmason
0e6550a2c6 cocci: add a index-compatibility.pending.cocci
Add a coccinelle rule which covers the rest of the macros guarded by
"USE_THE_INDEX_COMPATIBILITY_MACROS" cache.h. If the result of this
were applied it can be reduced down to just:

	#ifdef USE_THE_INDEX_COMPATIBILITY_MACROS
	extern struct index_state the_index;
	#endif

But that patch is just under 2000 lines, so let's first add this as a
"pending", and then incrementally pick changes from it in subsequent
commits. In doing that we'll migrate rules from this
"index-compatibility.pending.cocci" to the "index-compatibility.cocci"
created in a preceding commit.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-11-21 12:06:15 +09:00
Ævar Arnfjörð Bjarmason
fbc1ed629e cocci & cache.h: remove rarely used "the_index" compat macros
Since 4aab5b46f4 (Make read-cache.c "the_index" free., 2007-04-01)
we've been undergoing a slow migration away from these macros, but
haven't made much progress since f8adbec9fe (cache.h: flip
NO_THE_INDEX_COMPATIBILITY_MACROS switch, 2019-01-24).

Let's move forward a bit by changing the users of those macros that
are rare enough that we can convert them in one go, and then remove
the compatibility shim.

The only manual change to the C code here is to "cache.h", the rest is
all the result of applying the new "index-compatibility.cocci".

Even though it's a one-off, let's keep the coccinelle rules for
now. We'll extend them in subsequent commits, and this will help
anything that's in-flight or out-of-tree to migrate.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-11-21 12:06:15 +09:00
Ævar Arnfjörð Bjarmason
dc1cf3580e Makefile & test-tool: replace "DC_SHA1" variable with a "define"
Address the root cause of technical debt we've been carrying since
sha1collisiondetection was made the default in [1]. In a preceding
commit we narrowly fixed a bug where the "DC_SHA1" variable would be
unset (in combination with "NO_APPLE_COMMON_CRYPTO=" on OSX), even
though we had the sha1collisiondetection library enabled.

But the only reason we needed to have such a user-exposed knob went
away with [1], and it's been doing nothing useful since then. We don't
care if you define DC_SHA1=*, we only care that you don't ask for any
other SHA-1 implementation. If it turns out that you didn't, we'll use
sha1collisiondetection, whether you had "DC_SHA1" set or not.

As a result of this being confusing we had e.g. [2] for cmake and the
recent [3] for ci/lib.sh setting "DC_SHA1" explicitly, even though
this was always a NOOP.

A much simpler way to do this is to stop having the Makefile and
CMakeLists.txt set "DC_SHA1" to be picked up by the test-lib.sh, let's
instead add a trivial "test-tool sha1-is-sha1dc". It returns zero if
we're using sha1collisiondetection, non-zero otherwise.

1. e6b07da278 (Makefile: make DC_SHA1 the default, 2017-03-17)
2. c4b2f41b5f (cmake: support for testing git with ctest, 2020-06-26)
3. 1ad5c3df35 (ci: use DC_SHA1=YesPlease on osx-clang job for CI,
   2022-10-20)

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
2022-11-07 22:11:51 -05:00
Ævar Arnfjörð Bjarmason
6fae3aaf22 spatchcache: add a ccache-alike for "spatch"
Add a rather trivial "spatchcache", with this running e.g.:

	make cocciclean
	make contrib/coccinelle/free.cocci.patch \
		SPATCH=contrib/coccicheck/spatchcache \
		SPATCH_FLAGS=--very-quiet

Is cut down from ~20s to ~5s on my system. Much of that is either
fixable shell overhead, or the around 40 files we "CANTCACHE" (see the
implementation).

This uses "redis" as a cache by default, but it's configurable. See
the embedded documentation.

This is *not* like ccache in that we won't cache failed spatch
invocations, or those where spatch suggests changes for us. Those
cases are so rare that I didn't think it was worth the bother, by far
the most common case is that it has no suggested changes. We'll also
refuse to cache any "spatch" invocation that has output on stderr,
which means that "--very-quiet" must be added to "SPATCH_FLAGS".

Because we narrow the cache to that we don't need to save away stdout,
stderr & the exit code. We simply cache the cases where we had no
suggested changes.

Another benchmark is to compare this with the previous
SPATCH_BATCH_SIZE=N, as noted in [1]. Before this (on my 8 core system) running:

	make clean; time make contrib/coccinelle/array.cocci.patch SPATCH_BATCH_SIZE=0

Would take 33s, but with the preceding changes running without this
"spatchcache" is slightly slower, or around 35s:

	make clean; time make contrib/coccinelle/array.cocci.patch

Now doing the same with SPATCH=contrib/coccinelle/spatchcache will
take around 6s, but we'll need to compile the *.o files first to take
full advantage of it (which can be fast with "ccache"):

	make clean; make; time make contrib/coccinelle/array.cocci.patch SPATCH=contrib/coccinelle/spatchcache

1. https://lore.kernel.org/git/YwdRqP1CyUAzCEn2@coredump.intra.peff.net/

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
2022-11-02 21:22:16 -04:00
Ævar Arnfjörð Bjarmason
d0e624aed7 cocci: run against a generated ALL.cocci
The preceding commits to make the "coccicheck" target incremental made
it slower in some cases. As an optimization let's not have the
many=many mapping of <*.cocci>=<*.[ch]>, but instead concat the
<*.cocci> into an ALL.cocci, and then run one-to-many
ALL.cocci=<*.[ch]>.

A "make coccicheck" is now around 2x as fast as it was on "master",
and around 1.5x as fast as the preceding change to make the run
incremental:

	$ git hyperfine -L rev origin/master,HEAD~,HEAD -p 'make clean' 'make coccicheck SPATCH=spatch COCCI_SOURCES="$(echo $(ls o*.c builtin/h*.c))"' -r 3
	Benchmark 1: make coccicheck SPATCH=spatch COCCI_SOURCES="$(echo $(ls o*.c builtin/h*.c))"' in 'origin/master
	  Time (mean ± σ):      4.258 s ±  0.015 s    [User: 27.432 s, System: 1.532 s]
	  Range (min … max):    4.241 s …  4.268 s    3 runs

	Benchmark 2: make coccicheck SPATCH=spatch COCCI_SOURCES="$(echo $(ls o*.c builtin/h*.c))"' in 'HEAD~
	  Time (mean ± σ):      5.365 s ±  0.079 s    [User: 36.899 s, System: 1.810 s]
	  Range (min … max):    5.281 s …  5.436 s    3 runs

	Benchmark 3: make coccicheck SPATCH=spatch COCCI_SOURCES="$(echo $(ls o*.c builtin/h*.c))"' in 'HEAD
	  Time (mean ± σ):      2.725 s ±  0.063 s    [User: 14.796 s, System: 0.233 s]
	  Range (min … max):    2.667 s …  2.792 s    3 runs

	Summary
	  'make coccicheck SPATCH=spatch COCCI_SOURCES="$(echo $(ls o*.c builtin/h*.c))"' in 'HEAD' ran
	    1.56 ± 0.04 times faster than 'make coccicheck SPATCH=spatch COCCI_SOURCES="$(echo $(ls o*.c builtin/h*.c))"' in 'origin/master'
	    1.97 ± 0.05 times faster than 'make coccicheck SPATCH=spatch COCCI_SOURCES="$(echo $(ls o*.c builtin/h*.c))"' in 'HEAD~'

This can be turned off with SPATCH_CONCAT_COCCI, but as the
beneficiaries of "SPATCH_CONCAT_COCCI=" would mainly be those
developing the *.cocci rules themselves, let's leave this optimization
on by default.

For more information see my "Optimizing *.cocci rules by concat'ing
them" (<220901.8635dbjfko.gmgdl@evledraar.gmail.com>) on the
cocci@inria.fr mailing list.

This potentially changes the results of our *.cocci rules, but as
noted in that discussion it should be safe for our use. We don't name
rules, or if we do their names don't conflict across our *.cocci
files.

To the extent that we'd have any inter-dependencies between rules this
doesn't make that worse, as we'd have them now if we ran "make
coccicheck", applied the results, and would then have (due to
hypothetical interdependencies) suggested changes on the subsequent
"make coccicheck".

Our "coccicheck-test" target makes use of the ALL.cocci when running
tests, e.g. when testing unused.{c,out} we test it against ALL.cocci,
not unused.cocci. We thus assert (to the extent that we have test
coverage) that this concatenation doesn't change the expected results
of running these rules.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
2022-11-02 21:22:16 -04:00
Ævar Arnfjörð Bjarmason
340a4cb25c cocci rules: remove <id>'s from rules that don't need them
The <id> in the <rulename> part of the coccinelle syntax[1] is for our
purposes there to declares if we have inter-dependencies between
different rules.

But such <id>'s must be unique within a given semantic patch file.  As
we'll be processing a concatenated version of our rules in the
subsequent commit let's remove these names. They weren't being used
for the semantic patches themselves, and equated to a short comment
about the rule.

Both the filename and context of the rules makes it clear what they're
doing, so we're not gaining anything from keeping these. Retaining
them goes against recommendations that "contrib/coccinelle/README"
will be making in the subsequent commit.

This leaves only one named rule in our sources, where it's needed for
a "<id> <-> <extends> <id>" relationship:

	$ git -P grep '^@ ' -- contrib/coccinelle/
	contrib/coccinelle/swap.cocci:@ swap @
	contrib/coccinelle/swap.cocci:@ extends swap @

1. https://coccinelle.gitlabpages.inria.fr/website/docs/main_grammar.html

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
2022-11-02 21:22:16 -04:00
Ævar Arnfjörð Bjarmason
316e3886e3 cocci: optimistically use COMPUTE_HEADER_DEPENDENCIES
Improve the incremental rebuilding support of "coccicheck" by
piggy-backing on the computed dependency information of the
corresponding *.o file, rather than rebuilding all <RULE>/<FILE> pairs
if either their corresponding file changes, or if any header changes.

This in effect uses the same method that the "sparse" target was made
to use in c234e8a0ec (Makefile: make the "sparse" target non-.PHONY,
2021-09-23), except that the dependency on the *.o file isn't a hard
one, we check with $(wildcard) if the *.o file exists, and if so we'll
depend on it.

This means that the common case of:

	make
	make coccicheck

Will benefit from incremental rebuilding, now changing e.g. a header
will only re-run "spatch" on those those *.c files that make use of
it:

By depending on the *.o we piggy-back on
COMPUTE_HEADER_DEPENDENCIES. See c234e8a0ec (Makefile: make the
"sparse" target non-.PHONY, 2021-09-23) for prior art of doing that
for the *.sp files. E.g.:

    make contrib/coccinelle/free.cocci.patch
    make -W column.h contrib/coccinelle/free.cocci.patch

Will take around 15 seconds for the second command on my 8 core box if
I didn't run "make" beforehand to create the *.o files. But around 2
seconds if I did and we have those "*.o" files.

Notes about the approach of piggy-backing on *.o for dependencies:

 * It *is* a trade-off since we'll pay the extra cost of running the C
   compiler, but we're probably doing that anyway. The compiler is much
   faster than "spatch", so even though we need to re-compile the *.o to
   create the dependency info for the *.c for "spatch" it's
   faster (especially if using "ccache").

 * There *are* use-cases where some would like to have *.o files
   around, but to have the "make coccicheck" ignore them. See:
   https://lore.kernel.org/git/20220826104312.GJ1735@szeder.dev/

   For those users a:

	make
	make coccicheck SPATCH_USE_O_DEPENDENCIES=

   Will avoid considering the *.o files.

 * If that *.o file doesn't exist we'll depend on an intermediate file
   of ours which in turn depends on $(FOUND_H_SOURCES).

   This covers both an initial build, or where "coccicheck" is run
   without running "all" beforehand, and because we run "coccicheck"
   on e.g. files in compat/* that we don't know how to build unless
   the requisite flag was provided to the Makefile.

   Most of the runtime of "incremental" runs is now spent on various
   compat/* files, i.e. we conditionally add files to COMPAT_OBJS, and
   therefore conflate whether we *can* compile an object and generate
   dependency information for it with whether we'd like to link it
   into our binary.

   Before this change the distinction didn't matter, but now one way
   to make this even faster on incremental builds would be to peel
   those concerns apart so that we can see that e.g. compat/mmap.c
   doesn't depend on column.h.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
2022-11-02 21:22:16 -04:00
Ævar Arnfjörð Bjarmason
f1c903debd cocci: make "coccicheck" rule incremental
Optimize the very slow "coccicheck" target to take advantage of
incremental rebuilding, and fix outstanding dependency problems with
the existing rule.

The rule is now faster both on the initial run as we can make better
use of GNU make's parallelism than the old ad-hoc combination of
make's parallelism combined with $(SPATCH_BATCH_SIZE) and/or the
"--jobs" argument to "spatch(1)".

It also makes us *much* faster when incrementally building, it's now
viable to "make coccicheck" as topic branches are merged down.

The rule didn't use FORCE (or its equivalents) before, so a:

	make coccicheck
	make coccicheck

Would report nothing to do on the second iteration. But all of our
patch output depended on all $(COCCI_SOURCES) files, therefore e.g.:

    make -W grep.c coccicheck

Would do a full re-run, i.e. a a change in a single file would force
us to do a full re-run.

The reason for this (not the initial rationale, but my analysis) is:

* Since we create a single "*.cocci.patch+" we don't know where to
  pick up where we left off, or how to incrementally merge e.g. a
  "grep.c" change with an existing *.cocci.patch.

* We've been carrying forward the dependency on the *.c files since
  63f0a758a0 (add coccicheck make target, 2016-09-15) the rule was
  initially added as a sort of poor man's dependency discovery.

  As we don't include other *.c files depending on other *.c files
  has always been broken, as could be trivially demonstrated
  e.g. with:

       make coccicheck
       make -W strbuf.h coccicheck

  However, depending on the corresponding *.c files has been doing
  something, namely that *if* an API change modified both *.c and *.h
  files we'd catch the change to the *.h we care about via the *.c
  being changed.

  For API changes that happened only via *.h files we'd do the wrong
  thing before this change, but e.g. for function additions (not
  "static inline" ones) catch the *.h change by proxy.

Now we'll instead:

 * Create a <RULE>/<FILE> pair in the .build directory, E.g. for
   swap.cocci and grep.c we'll create
   .build/contrib/coccinelle/swap.cocci.patch/grep.c.

   That file is the diff we'll apply for that <RULE>-<FILE>
   combination, if there's no changes to me made (the common case)
   it'll be an empty file.

 * Our generated *.patch
   file (e.g. contrib/coccinelle/swap.cocci.patch) is now a simple "cat
   $^" of all of all of the <RULE>/<FILE> files for a given <RULE>.

   In the case discussed above of "grep.c" being changed we'll do the
   full "cat" every time, so they resulting *.cocci.patch will always
   be correct and up-to-date, even if it's "incrementally updated".

   See 1cc0425a27 (Makefile: have "make pot" not "reset --hard",
   2022-05-26) for another recent rule that used that technique.

As before we'll:

 * End up generating a contrib/coccinelle/swap.cocci.patch, if we
   "fail" by creating a non-empty patch we'll still exit with a zero
   exit code.

   Arguably we should move to a more Makefile-native way of doing
   this, i.e. fail early, and if we want all of the "failed" changes
   we can use "make -k", but as the current
   "ci/run-static-analysis.sh" expects us to behave this way let's
   keep the existing behavior of exhaustively discovering all cocci
   changes, and only failing if spatch itself errors out.

Further implementation details & notes:

 * Before this change running "make coccicheck" would by default end
   up pegging just one CPU at the very end for a while, usually as
   we'd finish whichever *.cocci rule was the most expensive.

   This could be mitigated by combining "make -jN" with
   SPATCH_BATCH_SIZE, see 960154b9c1 (coccicheck: optionally batch
   spatch invocations, 2019-05-06).

   There will be cases where getting rid of "SPATCH_BATCH_SIZE" makes
   things worse, but a from-scratch "make coccicheck" with the default
   of SPATCH_BATCH_SIZE=1 (and tweaking it doesn't make a difference)
   is faster (~3m36s v.s. ~3m56s) with this approach, as we can feed
   the CPU more work in a less staggered way.

 * Getting rid of "SPATCH_BATCH_SIZE" particularly helps in cases
   where the default of 1 yields parallelism under "make coccicheck",
   but then running e.g.:

       make -W contrib/coccinelle/swap.cocci coccicheck

   I.e. before that would use only one CPU core, until the user
   remembered to adjust "SPATCH_BATCH_SIZE" differently than the
   setting that makes sense when doing a non-incremental run of "make
   coccicheck".

 * Before the "make coccicheck" rule would have to clean
   "contrib/coccinelle/*.cocci.patch*", since we'd create "*+" and
   "*.log" files there. Now those are created in
   .build/contrib/coccinelle/, which is covered by the "cocciclean" rule
   already.

Outstanding issues & future work:

 * We could get rid of "--all-includes" in favor of manually
   specifying a list of includes to give to "spatch(1)".

   As noted upthread of [1] a naïve removal of "--all-includes" will
   result in broken *.cocci patches, but if we know the exhaustive
   list of includes via COMPUTE_HEADER_DEPENDENCIES we don't need to
   re-scan for them, we could grab the headers to include from the
   .depend.d/<file>.o.d and supply them with the "--include" option to
   spatch(1).q

1. https://lore.kernel.org/git/87ft18tcog.fsf@evledraar.gmail.com/

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
2022-11-02 21:22:16 -04:00
Ævar Arnfjörð Bjarmason
895ae7ae2a cocci rules: remove unused "F" metavariable from pending rule
Fix an issue with a rule added in 9b45f49981 (object-store: prepare
has_{sha1, object}_file to handle any repo, 2018-11-13). We've been
spewing out this warning into our $@.log since that rule was added:

	warning: rule starting on line 21: metavariable F not used in the - or context code

We should do a better job of scouring our coccinelle log files for
such issues, but for now let's fix this as a one-off.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
2022-11-02 21:22:15 -04:00
Taylor Blau
a23e0b69e2 Merge branch 'pb/subtree-split-and-merge-after-squashing-tag-fix'
A bugfix to "git subtree" in its split and merge features.

* pb/subtree-split-and-merge-after-squashing-tag-fix:
  subtree: fix split after annotated tag was squashed merged
  subtree: fix squash merging after annotated tag was squashed merged
  subtree: process 'git-subtree-split' trailer in separate function
  subtree: use named variables instead of "$@" in cmd_pull
  subtree: define a variable before its first use in 'find_latest_squash'
  subtree: prefix die messages with 'fatal'
  subtree: add 'die_incompatible_opt' function to reduce duplication
  subtree: use 'git rev-parse --verify [--quiet]' for better error messages
  test-lib-functions: mark 'test_commit' variables as 'local'
2022-10-30 21:04:43 -04:00
Junio C Hamano
246eedf2bc Merge branch 'js/cmake-updates'
Update to build procedure with VS using CMake/CTest.

* js/cmake-updates:
  cmake: increase time-out for a long-running test
  cmake: avoid editing t/test-lib.sh
  add -p: avoid ambiguous signed/unsigned comparison
  cmake: copy the merge tools for testing
  cmake: make it easier to diagnose regressions in CTest runs
2022-10-27 14:51:53 -07:00
Philippe Blain
1762382ab1 subtree: fix split after annotated tag was squashed merged
The previous commit fixed a failure in 'git subtree merge --squash' when
the previous squash-merge merged an annotated tag of the subtree
repository which is missing locally.

The same failure happens in 'git subtree split', either directly or when
called by 'git subtree push', under the same circumstances: 'cmd_split'
invokes 'find_existing_splits', which loops through previous commits and
invokes 'git rev-parse' (via 'process_subtree_split_trailer') on the
value of any 'git subtree-split' trailer it finds. This fails if this
value is the hash of an annotated tag which is missing locally.

Add a new optional argument 'repository' to 'cmd_split' and
'find_existing_splits', and invoke 'cmd_split' with that argument from
'cmd_push'. This allows 'process_subtree_split_trailer' to try to fetch
the missing tag from the 'repository' if it's not available locally,
mirroring the new behaviour of 'git subtree pull' and 'git subtree
merge'.

Signed-off-by: Philippe Blain <levraiphilippeblain@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-10-21 13:51:06 -07:00
Philippe Blain
0d330673d4 subtree: fix squash merging after annotated tag was squashed merged
When 'git subtree merge --squash $ref' is invoked, either directly or
through 'git subtree pull --squash $repo $ref', the code looks for the
latest squash merge of the subtree in order to create the new merge
commit as a child of the previous squash merge.

This search is done in function 'process_subtree_split_trailer', invoked
by 'find_latest_squash', which looks for the most recent commit with a
'git-subtree-split' trailer; that trailer's value is the object name in
the subtree repository of the ref that was last squash-merged. The
function verifies that this object is present locally with 'git
rev-parse', and aborts if it's not.

The hash referenced by the 'git-subtree-split' trailer is guaranteed to
correspond to a commit since it is the result of running 'git rev-parse
-q --verify "$1^{commit}"' on the first argument of 'cmd_merge' (this
corresponds to 'rev' in 'cmd_merge' which is passed through to
'new_squash_commit' and 'squash_msg').

But this is only the case since e4f8baa88a (subtree: parse revs in
individual cmd_ functions, 2021-04-27), which went into Git 2.32. Before
that commit, 'cmd_merge' verified the revision it was given using 'git
rev-parse --revs-only "$@"'. Such an invocation, when fed the name of an
annotated tag, would return the hash of the tag, not of the commit
referenced by the tag.

This leads to a failure in 'find_latest_squash' when squash-merging if
the most recent squash-merge merged an annotated tag of the subtree
repository, using a pre-2.32 version of 'git subtree', unless that
previous annotated tag is present locally (which is not usually the
case).

We can fix this by fetching the object directly by its hash in
'process_subtree_split_trailer' when 'git rev-parse' fails, but in order
to do so we need to know the name or URL of the subtree repository.
This is not possible in general for 'git subtree merge', but is easy
when it is invoked through 'git subtree pull' since in that case the
subtree repository is passed by the user at the command line.

Allow the 'git subtree pull' scenario to work out-of-the-box by adding
an optional 'repository' argument to functions 'cmd_merge',
'find_latest_squash' and 'process_subtree_split_trailer', and invoke
'cmd_merge' with that 'repository' argument in 'cmd_pull'.

If 'repository' is absent in 'process_subtree_split_trailer', instruct
the user to try fetching the missing object directly.

Signed-off-by: Philippe Blain <levraiphilippeblain@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-10-21 13:51:06 -07:00
Philippe Blain
f10d31cf2d subtree: process 'git-subtree-split' trailer in separate function
Both functions 'find_latest_squash' (called by 'git subtree merge
--squash' and 'git subtree split --rejoin') and 'find_existing_splits'
(called by git 'subtree split') loop through commits that have a
'git-subtree-dir' trailer, and then process the 'git-subtree-mainline'
and 'git-subtree-split' trailers for those commits.

The processing done for the 'git-subtree-split' trailer is simple: we
check if the object exists with 'rev-parse' and set the variable
'sub' to the object name, or we die if the object does not exist.

In a future commit we will add more steps to the processing of this
trailer in order to make the code more robust.

To reduce code duplication, move the processing of the
'git-subtree-split' trailer to a dedicated function,
'process_subtree_split_trailer'.

Signed-off-by: Philippe Blain <levraiphilippeblain@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-10-21 13:51:06 -07:00
Philippe Blain
7990142eb1 subtree: use named variables instead of "$@" in cmd_pull
'cmd_pull' already checks that only two arguments are given,
'repository' and 'ref'. Define variables with these names instead of
using the positional parameter $2 and "$@".

This will allow a subsequent commit to pass 'repository' to 'cmd_merge'.

Signed-off-by: Philippe Blain <levraiphilippeblain@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-10-21 13:51:06 -07:00
Philippe Blain
34ab458cb1 subtree: define a variable before its first use in 'find_latest_squash'
The function 'find_latest_squash' takes a single argument, 'dir', but a
debug statement uses this variable before it takes its value from $1.

This statement thus gets the value of 'dir' from the calling function,
which currently is the same as the 'dir' argument, so it works but it
is confusing.

Move the definition of 'dir' before its first use.

Signed-off-by: Philippe Blain <levraiphilippeblain@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-10-21 13:51:05 -07:00
Philippe Blain
5626a9e2a9 subtree: prefix die messages with 'fatal'
Just as was done in 0008d12284 (submodule: prefix die messages with
'fatal', 2021-07-10) for 'git-submodule.sh', make the 'die' messages
outputed by 'git-subtree.sh' more in line with the rest of the code base
by prefixing them with "fatal: ", and do not capitalize their first
letter.

Signed-off-by: Philippe Blain <levraiphilippeblain@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-10-21 13:51:05 -07:00
Philippe Blain
2e94339fdc subtree: add 'die_incompatible_opt' function to reduce duplication
9a3e3ca2ba (subtree: be stricter about validating flags, 2021-04-27)
added validation code to check that options given to 'git subtree <cmd>'
made sense with the command being used.

Refactor these checks by adding a 'die_incompatible_opt' function to
reduce code duplication.

Signed-off-by: Philippe Blain <levraiphilippeblain@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-10-21 13:51:05 -07:00
Philippe Blain
a50fcc13dd subtree: use 'git rev-parse --verify [--quiet]' for better error messages
There are three occurences of 'git rev-parse <rev>' in 'git-subtree.sh'
where the command expects a revision and the script dies or exits if the
revision can't be found. In that case, the error message from 'git
rev-parse' is:

    $ git rev-parse <bad rev>
    <bad rev>
    fatal: ambiguous argument '<bad rev>': unknown revision or path not in the working tree.
    Use '--' to separate paths from revisions, like this:
    'git <command> [<revision>...] -- [<file>...]'

This is a little confusing to the user, since this error message is
outputed by 'git subtree'.

At these points in the script, we know that we are looking for a single
revision, so be explicit by using '--verify', resulting in a little
better error message:

    $ git rev-parse --verify <bad rev>
    fatal: Needed a single revision

In the two occurences where we 'die' if 'git rev-parse' fails, 'git
subtree' outputs "could not rev-parse split hash $b from commit $sq", so
we actually do not need the supplementary error message from 'git
rev-parse'; add '--quiet' to silence it.

In the third occurence, we 'exit', so keep the error message from 'git
rev-parse'. Note that this messsage is still suboptimal since it can be
understood to mean that 'git rev-parse' did not receive a single
revision as argument, which is not the case here: the command did
receive a single revision, but the revision is not resolvable to an
available object.

The alternative would be to use '--' after the revision, as suggested by
the first error message, resulting in a clearer error message:

    $ git rev-parse <bad rev> --
    fatal: bad revision '<bad rev>'

Unfortunately we can't use that syntax because in the more common case
of the revision resolving to a known object, the command outputs the
object's hash, a newline, and the dashdash, which breaks the 'git
subtree' script.

Signed-off-by: Philippe Blain <levraiphilippeblain@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-10-21 13:51:05 -07:00
Johannes Schindelin
c858750b41 cmake: increase time-out for a long-running test
As suggested in
https://github.com/git-for-windows/git/issues/3966#issuecomment-1221264238,
t7112 can run for well over one hour, which seems to be the default
maximum run time at least when running CTest-based tests in Visual
Studio.

Let's increase the time-out as a stop gap to unblock developers wishing
to run Git's test suite in Visual Studio.

Note: The actual run time is highly dependent on the circumstances. For
example, in Git's CI runs, the Windows-based tests typically take a bit
over 5 minutes to run. CI runs have the added benefit that Windows
Defender (the common anti-malware scanner on Windows) is turned off,
something many developers are not at liberty to do on their work
stations. When Defender is turned on, even on this developer's high-end
Ryzen system, t7112 takes over 15 minutes to run.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-10-19 12:33:05 -07:00
Johannes Schindelin
ee9e66e4e7 cmake: avoid editing t/test-lib.sh
In 7f5397a07c (cmake: support for testing git when building out of the
source tree, 2020-06-26), we implemented support for running Git's test
scripts even after building Git in a different directory than the source
directory.

The way we did this was to edit the file `t/test-lib.sh` to override
`GIT_BUILD_DIR` to point somewhere else than the parent of the `t/`
directory.

This is unideal because it always leaves a tracked file marked as
modified, and it is all too easy to commit that change by mistake.

Let's change the strategy by teaching `t/test-lib.sh` to detect the
presence of a file called `GIT-BUILD-DIR` in the source directory. If it
exists, the contents are interpreted as the location to the _actual_
build directory. We then write this file as part of the CTest
definition.

To support building Git via a regular `make` invocation after building
it using CMake, we ensure that the `GIT-BUILD-DIR` file is deleted (for
convenience, this is done as part of the Makefile rule that is already
run with every `make` invocation to ensure that `GIT-BUILD-OPTIONS` is
up to date).

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-10-19 12:33:05 -07:00
Johannes Schindelin
6a83b5f081 cmake: copy the merge tools for testing
Even when running the tests via CTest, t7609 and t7610 rely on more than
only a few mergetools to be copied to the build directory. Let's make it
so.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-10-19 11:55:28 -07:00
Johannes Schindelin
2ea1d8b556 cmake: make it easier to diagnose regressions in CTest runs
When a test script fails in Git's test suite, the usual course of action
is to re-run it using options to increase the verbosity of the output,
e.g. `-v` and `-x`.

Like in Git's CI runs, when running the tests in Visual Studio via the
CTest route, it is cumbersome or at least requires a very unintuitive
approach to pass options to the test scripts: the CMakeLists.txt file
would have to be modified, passing the desired options to _all_ test
scripts, and then the CMake Cache would have to be reconfigured before
running the test in question individually. Unintuitive at best, and
opposite to the niceties IDE users expect.

So let's just pass those options by default: This will not clutter any
output window but the log that is written to a log file will have
information necessary to figure out test failures.

While at it, also imitate what the Windows jobs in Git's CI runs do to
accelerate running the test scripts: pass the `--no-bin-wrappers` and
`--no-chain-lint` options.

This makes the test runs noticeably faster because the `bin-wrappers/`
scripts as well as the `chain-lint` code make heavy use of POSIX shell
scripting, which is really, really slow on Windows due to the need to
emulate POSIX behavior via the MSYS2 runtime. In a test by Eric
Sunshine, it added two minutes (!) just to perform the chain-lint task.

The idea of adding a CMake config option (á la `GIT_TEST_OPTS`) was
considered during the development of this patch, but then dropped: such
a setting is global, across _all_ tests, where e.g. `--run=...` would
not make sense. Users wishing to override these new defaults are better
advised running the test script manually, in a Git Bash, with full
control over the command line.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-10-19 11:55:28 -07:00
Junio C Hamano
7b8cfe34d9 Merge branch 'ed/fsmonitor-on-networked-macos'
By default, use of fsmonitor on a repository on networked
filesystem is disabled. Add knobs to make it workable on macOS.

* ed/fsmonitor-on-networked-macos:
  fsmonitor: fix leak of warning message
  fsmonitor: add documentation for allowRemote and socketDir options
  fsmonitor: check for compatability before communicating with fsmonitor
  fsmonitor: deal with synthetic firmlinks on macOS
  fsmonitor: avoid socket location check if using hook
  fsmonitor: relocate socket file if .git directory is remote
  fsmonitor: refactor filesystem checks to common interface
2022-10-17 14:56:31 -07:00
Eric DeCosta
6beb2688d3 fsmonitor: relocate socket file if .git directory is remote
If the .git directory is on a remote filesystem, create the socket
file in 'fsmonitor.socketDir' if it is defined, else create it in $HOME.

Signed-off-by: Eric DeCosta <edecosta@mathworks.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-10-05 11:05:22 -07:00
Eric DeCosta
508c1a572d fsmonitor: refactor filesystem checks to common interface
Provide a common interface for getting basic filesystem information
including filesystem type and whether the filesystem is remote.

Refactor existing code for getting basic filesystem info and detecting
remote file systems to the new interface.

Refactor filesystem checks to leverage new interface. For macOS,
error-out if the Unix Domain socket (UDS) file is on a remote
filesystem.

Signed-off-by: Eric DeCosta <edecosta@mathworks.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-10-05 11:05:22 -07:00
Matthew John Cheetham
630a6429a7 osxkeychain: clarify that we ignore unknown lines
Like in all the other credential helpers, the osxkeychain helper
ignores unknown credential lines.

Add a comment (a la the other helpers) to make it clear and explicit
that this is the desired behaviour.

Signed-off-by: Matthew John Cheetham <mjcheetham@outlook.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-09-22 14:21:04 -07:00
Matthew John Cheetham
6ea87d97af netrc: ignore unknown lines (do not die)
Contrary to the documentation on credential helpers, as well as the help
text for git-credential-netrc itself, this helper will `die` when
presented with an unknown property/attribute/token.

Correct the behaviour here by skipping and ignoring any tokens that are
unknown. This means all helpers in the tree are consistent and ignore
any unknown credential properties/attributes.

Signed-off-by: Matthew John Cheetham <mjcheetham@outlook.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-09-22 14:20:59 -07:00
Matthew John Cheetham
d695804983 wincred: ignore unknown lines (do not die)
It is the expectation that credential helpers be liberal in what they
accept and conservative in what they return, to allow for future growth
and evolution of the protocol/interaction.

All of the other helpers (store, cache, osxkeychain, libsecret,
gnome-keyring) except `netrc` currently ignore any credential lines
that are not recognised, whereas the Windows helper (wincred) instead
dies.

Fix the discrepancy and ignore unknown lines in the wincred helper.

Signed-off-by: Matthew John Cheetham <mjcheetham@outlook.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-09-22 14:20:37 -07:00
SZEDER Gábor
d11b875197 t/Makefile: remove 'test-results' on 'make clean'
The 't/test-results' directory and its contents are by-products of the
test process, so 'make clean' should remove them, but, alas, this has
been broken since fee65b194d (t/Makefile: don't remove test-results in
"clean-except-prove-cache", 2022-07-28).

The 'clean' target in 't/Makefile' was not directly responsible for
removing the 'test-results' directory, but relied on its dependency
'clean-except-prove-cache' to do that [1].  ee65b194d broke this,
because it only removed the 'rm -r test-results' command from the
'clean-except-prove-cache' target instead of moving it to the 'clean'
target, resulting in stray 't/test-results' directories.

Add that missing cleanup command to 't/Makefile', and to all
sub-Makefiles touched by that commit as well.

[1] 60f26f6348 (t/Makefile: retain cache t/.prove across prove runs,
                2012-05-02)

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-09-21 11:32:13 -07:00
Junio C Hamano
42bf77c7d0 Merge branch 'vd/scalar-to-main'
Hoist the remainder of "scalar" out of contrib/ to the main part of
the codebase.

* vd/scalar-to-main:
  Documentation/technical: include Scalar technical doc
  t/perf: add 'GIT_PERF_USE_SCALAR' run option
  t/perf: add Scalar performance tests
  scalar-clone: add test coverage
  scalar: add to 'git help -a' command list
  scalar: implement the `help` subcommand
  git help: special-case `scalar`
  scalar: include in standard Git build & installation
  scalar: fix command documentation section header
2022-09-19 14:35:25 -07:00
Victoria Dye
7b5c93c6c6 scalar: include in standard Git build & installation
Move 'scalar' out of 'contrib/' and into the root of the Git tree. The goal
of this change is to build 'scalar' as part of the standard Git build &
install processes.

This patch includes both the physical move of Scalar's files out of
'contrib/' ('scalar.c', 'scalar.txt', and 't9xxx-scalar.sh'), and the
changes to the build definitions in 'Makefile' and 'CMakelists.txt' to
accommodate the new program.

At a high level, Scalar is built so that:
- there is a 'scalar-objs' target (similar to those created in 029bac01a8
  (Makefile: add {program,xdiff,test,git,fuzz}-objs & objects targets,
  2021-02-23)) for debugging purposes.
- it appears in the root of the install directory (rather than the
  gitexecdir).
- it is included in the 'bin-wrappers/' directory for use in tests.
- it receives a platform-specific executable suffix (e.g., '.exe'), if
  applicable.
- 'scalar.txt' is installed as 'man1' documentation.
- the 'clean' target removes the 'scalar' executable.

Additionally, update the root level '.gitignore' file to ignore the Scalar
executable.

Signed-off-by: Victoria Dye <vdye@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-09-02 10:02:55 -07:00
Victoria Dye
b6faef396f scalar: fix command documentation section header
Rename the last section header in 'contrib/scalar/scalar.txt' from "Scalar"
to "GIT". The linting rules of the 'documentation' CI build enforce the
existence of a "GIT" section in command documentation. Although 'scalar.txt'
is not yet checked, it will be in a future patch.

Here, changing the header name is more appropriate than making a
Scalar-specific exception to the linting rule. The existing "Scalar" section
contains only a link back to the main Git documentation, essentially the
same as the "GIT" section in builtin documentation. Changing the section
name further clarifies the Scalar-Git association and maintains consistency
with the rest of Git.

Signed-off-by: Victoria Dye <vdye@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-09-02 10:02:55 -07:00
Eric Sunshine
23a14f3016 test-lib: replace chainlint.sed with chainlint.pl
By automatically invoking chainlint.sed upon each test it runs,
`test_run_` in test-lib.sh ensures that broken &&-chains will be
detected early as tests are modified or new are tests created since it
is typical to run a test script manually (i.e. `./t1234-test-script.sh`)
during test development. Now that the implementation of chainlint.pl is
complete, modify test-lib.sh to invoke it automatically instead of
chainlint.sed each time a test script is run.

This change reduces the number of "linter" invocations from 26800+ (once
per test run) down to 1050+ (once per test script), however, a
subsequent change will drop the number of invocations to 1 per `make
test`, thus fully realizing the benefit of the new linter.

Note that the "magic exit code 117" &&-chain checker added by bb79af9d09
(t/test-lib: introduce --chain-lint option, 2015-03-20) which is built
into t/test-lib.sh is retained since it has near zero-cost and
(theoretically) may catch a broken &&-chain not caught by chainlint.pl.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-09-01 10:07:41 -07:00
Junio C Hamano
a572a5d4c1 Merge branch 'jd/prompt-show-conflict'
The bash prompt (in contrib/) learned to optionally indicate when
the index is unmerged.

* jd/prompt-show-conflict:
  git-prompt: show presence of unresolved conflicts at command prompt
2022-08-29 14:55:12 -07:00
Junio C Hamano
bc820cf9e6 Merge branch 'vd/scalar-enables-fsmonitor'
"scalar" now enables built-in fsmonitor on enlisted repositories,
when able.

* vd/scalar-enables-fsmonitor:
  scalar: update technical doc roadmap with FSMonitor support
  scalar unregister: stop FSMonitor daemon
  scalar: enable built-in FSMonitor on `register`
  scalar: move config setting logic into its own function
  scalar-delete: do not 'die()' in 'delete_enlistment()'
  scalar-[un]register: clearly indicate source of error
  scalar-unregister: handle error codes greater than 0
  scalar: constrain enlistment search
2022-08-29 14:55:12 -07:00
Junio C Hamano
f00ddc9f48 Merge branch 'vd/scalar-generalize-diagnose'
The "diagnose" feature to create a zip archive for diagnostic
material has been lifted from "scalar" and made into a feature of
"git bugreport".

* vd/scalar-generalize-diagnose:
  scalar: update technical doc roadmap
  scalar-diagnose: use 'git diagnose --mode=all'
  builtin/bugreport.c: create '--diagnose' option
  builtin/diagnose.c: add '--mode' option
  builtin/diagnose.c: create 'git diagnose' builtin
  diagnose.c: add option to configure archive contents
  scalar-diagnose: move functionality to common location
  scalar-diagnose: move 'get_disk_info()' to 'compat/'
  scalar-diagnose: add directory to archiver more gently
  scalar-diagnose: avoid 32-bit overflow of size_t
  scalar-diagnose: use "$GIT_UNZIP" in test
2022-08-25 14:42:32 -07:00
Justin Donnelly
e03acd0d4a git-prompt: show presence of unresolved conflicts at command prompt
If GIT_PS1_SHOWCONFLICTSTATE is set to "yes", show the word "CONFLICT"
on the command prompt when there are unresolved conflicts.

Example prompt: (main|CONFLICT)

Signed-off-by: Justin Donnelly <justinrdonnelly@gmail.com>
Acked-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-08-19 10:58:40 -07:00
Johannes Schindelin
ec4c23116b scalar unregister: stop FSMonitor daemon
Especially on Windows, we will need to stop that daemon, just in case
that the directory needs to be removed (the daemon would otherwise hold
a handle to that directory, preventing it from being deleted).

Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Victoria Dye <vdye@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-08-18 21:35:32 -07:00
Matthew John Cheetham
3f1917dc60 scalar: enable built-in FSMonitor on register
Using the built-in FSMonitor makes many common commands quite a bit
faster. So let's teach the `scalar register` command to enable the
built-in FSMonitor and kick-start the fsmonitor--daemon process (for
convenience).

For simplicity, we only support the built-in FSMonitor (and no external
file system monitor such as e.g. Watchman).

Helped-by: Junio C Hamano <gitster@pobox.com>
Helped-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Matthew John Cheetham <mjcheetham@outlook.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Victoria Dye <vdye@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-08-18 21:35:32 -07:00
Victoria Dye
d934a11c71 scalar: move config setting logic into its own function
Create function 'set_scalar_config()' to contain the logic used in setting
Scalar-defined Git config settings, including how to handle reconfiguring &
overwriting existing values. This function allows future patches to set
config values in parts of 'scalar.c' other than 'set_recommended_config()'.

Signed-off-by: Victoria Dye <vdye@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-08-18 21:35:32 -07:00
Victoria Dye
9b24bb9205 scalar-delete: do not 'die()' in 'delete_enlistment()'
Rather than exiting with 'die()' when 'delete_enlistment()' encounters an
error, return an error code with the appropriate message. There's no need
for an abrupt exit with 'die()' in 'delete_enlistment()' because its only
caller ('cmd_delete()') properly cleans up allocated resources and returns
the 'delete_enlistment()' return value as its own exit code.

Signed-off-by: Victoria Dye <vdye@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-08-18 21:35:32 -07:00
Victoria Dye
d2a79bc953 scalar-[un]register: clearly indicate source of error
When a step in 'register_dir()' or 'unregister_dir()' fails, indicate which
step failed with an error message, rather than silently assigning a nonzero
return code.

Signed-off-by: Victoria Dye <vdye@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-08-18 21:35:32 -07:00
Victoria Dye
adedcee811 scalar-unregister: handle error codes greater than 0
When 'scalar unregister' tries to disable maintenance and remove an
enlistment, ensure that the return value is nonzero if either operation
produces *any* nonzero return value, not just when they return a value less
than 0.

Signed-off-by: Victoria Dye <vdye@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-08-18 21:35:31 -07:00
Victoria Dye
65f6a9eb0b scalar: constrain enlistment search
Make the search for repository and enlistment root in
'setup_enlistment_directory()' more constrained to simplify behavior and
adhere to 'GIT_CEILING_DIRECTORIES'.

Previously, 'setup_enlistment_directory()' would check whether the provided
path (or current working directory) '<dir>' or its subdirectory '<dir>/src'
was a repository root. If not, the process would repeat on the parent of
'<dir>' until the repository was found or it reached the root of the
filesystem. This meant that a user could specify a path *anywhere* inside an
enlistment (including paths not in the repository contained within the
enlistment) and it would be found.

The downside to this process is that the search would not account for
'GIT_CEILING_DIRECTORIES', so the upward search could result in modifying
repository contents past 'GIT_CEILING_DIRECTORIES'. Similarly, operations
like 'scalar delete' could end up unintentionally deleting the parent of a
repo if its root was named 'src'.

To make this 'setup_enlistment_directory()' both adhere to
'GIT_CEILING_DIRECTORIES' and avoid unwanted deletions, the search for an
enlistment directory is simplified to:

- if '<dir>/src' is a repository root, '<dir>' is the enlistment root
- if '<dir>' is either the repository root or contained within a repository,
  the repository root is the enlistment root

Now, only 'setup_git_directory()' (called by 'setup_enlistment_directory()')
searches upwards from the 'scalar' specified path, enforcing
'GIT_CEILING_DIRECTORIES' in the process. Additionally, 'scalar delete
<dir>/src' will not delete '<dir>' (if users would like to delete it, they
can still specify the enlistment root with 'scalar delete <dir>'). This is
true of any 'scalar' operation; users can invoke 'scalar' on the enlistment
root, but paths must otherwise be inside the repository to be valid.

To help clarify the updated behavior, new tests are added to
't9099-scalar.sh'.

Finally, this change leaves 'strbuf_parent_directory()' with only a single,
WIN32-specific caller in 'delete_enlistment()'. Rather than wrap
'strbuf_parent_directory()' in '#ifdef WIN32' to avoid the "unused function"
compiler error, move the contents of 'strbuf_parent_directory()' into
'delete_enlistment()' and remove the function.

Helped-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Victoria Dye <vdye@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-08-18 21:35:31 -07:00
Victoria Dye
672196a307 scalar-diagnose: use 'git diagnose --mode=all'
Replace implementation of 'scalar diagnose' with an internal invocation of
'git diagnose --mode=all'. This simplifies the implementation of
'cmd_diagnose' by making it a direct alias of 'git diagnose' and removes
some code in 'scalar.c' that is duplicated in 'builtin/diagnose.c'. The
simplicity of the alias also sets up a clean deprecation path for 'scalar
diagnose' (in favor of 'git diagnose'), if that is desired in the future.

This introduces one minor change to the output of 'scalar diagnose', which
is that the prefix of the created zip archive is changed from 'scalar_' to
'git-diagnostics-'.

Helped-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Victoria Dye <vdye@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-08-12 13:20:02 -07:00
Victoria Dye
33cba726f0 diagnose.c: add option to configure archive contents
Update 'create_diagnostics_archive()' to take an argument 'mode'. When
archiving diagnostics for a repository, 'mode' is used to selectively
include/exclude information based on its value. The initial options for
'mode' are:

* DIAGNOSE_NONE: do not collect any diagnostics or create an archive
  (no-op).
* DIAGNOSE_STATS: collect basic repository metadata (Git version, repo path,
  filesystem available space) as well as sizing and count statistics for the
  repository's objects and packfiles.
* DIAGNOSE_ALL: collect basic repository metadata, sizing/count statistics,
  and copies of the '.git', '.git/hooks', '.git/info', '.git/logs', and
  '.git/objects/info' directories.

These modes are introduced to provide users the option to collect
diagnostics without the sensitive information included in copies of '.git'
dir contents. At the moment, only 'scalar diagnose' uses
'create_diagnostics_archive()' (with a hardcoded 'DIAGNOSE_ALL' mode to
match existing functionality), but more callers will be introduced in
subsequent patches.

Finally, refactor from a hardcoded set of 'add_directory_to_archiver()'
calls to iterative invocations gated by 'DIAGNOSE_ALL'. This allows for
easier future modification of the set of directories to archive and improves
error reporting when 'add_directory_to_archiver()' fails.

Helped-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Victoria Dye <vdye@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-08-12 13:20:02 -07:00
Victoria Dye
bb2c34956a scalar-diagnose: move functionality to common location
Move the core functionality of 'scalar diagnose' into a new 'diagnose.[c,h]'
library to prepare for new callers in the main Git tree generating
diagnostic archives. These callers will be introduced in subsequent patches.

While this patch appears large, it is mostly made up of moving code out of
'scalar.c' and into 'diagnose.c'. Specifically, the functions

- dir_file_stats_objects()
- dir_file_stats()
- count_files()
- loose_objs_stats()
- add_directory_to_archiver()

are all copied verbatim from 'scalar.c'. The 'create_diagnostics_archive()'
function is a mostly identical (partial) copy of 'cmd_diagnose()', with the
primary changes being that 'zip_path' is an input and "Enlistment root" is
corrected to "Repository root" in the archiver log.

Helped-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Victoria Dye <vdye@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-08-12 13:20:02 -07:00
Victoria Dye
435a2535b7 scalar-diagnose: move 'get_disk_info()' to 'compat/'
Move 'get_disk_info()' function into 'compat/'. Although Scalar-specific
code is generally not part of the main Git tree, 'get_disk_info()' will be
used in subsequent patches by additional callers beyond 'scalar diagnose'.
This patch prepares for that change, at which point this platform-specific
code should be part of 'compat/' as a matter of convention.

The function is copied *mostly* verbatim, with two exceptions:

* '#ifdef WIN32' is replaced with '#ifdef GIT_WINDOWS_NATIVE' to allow
  'statvfs' to be used with Cygwin.
* the 'struct strbuf buf' and 'int res' (as well as their corresponding
  cleanup & return) are moved outside of the '#ifdef' block.

Signed-off-by: Victoria Dye <vdye@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-08-12 13:20:02 -07:00
Victoria Dye
ba307a5046 scalar-diagnose: add directory to archiver more gently
If a directory added to the 'scalar diagnose' archiver does not exist, warn
and return 0 from 'add_directory_to_archiver()' rather than failing with a
fatal error. This handles a failure edge case where the '.git/logs' has not
yet been created when running 'scalar diagnose', but extends to any
situation where a directory may be missing in the '.git' dir.

Now, when a directory is missing a warning is captured in the diagnostic
logs. This provides a user with more complete information than if 'scalar
diagnose' simply failed with an error.

Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Victoria Dye <vdye@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-08-12 13:20:02 -07:00
Victoria Dye
91be401945 scalar-diagnose: avoid 32-bit overflow of size_t
Avoid 32-bit size_t overflow when reporting the available disk space in
'get_disk_info' by casting the block size and available block count to
'off_t' before multiplying them. Without this change, 'st_mult' would
(correctly) report a size_t overflow on 32-bit systems at or exceeding 2^32
bytes of available space.

Note that 'off_t' is a 64-bit integer even on 32-bit systems due to the
inclusion of '#define _FILE_OFFSET_BITS 64' in 'git-compat-util.h' (see
b97e911643 (Support for large files on 32bit systems., 2007-02-17)).

Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Victoria Dye <vdye@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-08-12 13:20:02 -07:00
Victoria Dye
81ad551343 scalar-diagnose: use "$GIT_UNZIP" in test
Use the "$GIT_UNZIP" test variable rather than verbatim 'unzip' to unzip the
'scalar diagnose' archive. Using "$GIT_UNZIP" is needed to run the Scalar
tests on systems where 'unzip' is not in the system path.

Signed-off-by: Victoria Dye <vdye@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-08-12 13:20:02 -07:00
Junio C Hamano
657c7403a3 Merge branch 'ab/leak-check'
Extend SANITIZE=leak checking and declare more tests "currently leak-free".

* ab/leak-check:
  CI: use "GIT_TEST_SANITIZE_LEAK_LOG=true" in linux-leaks
  upload-pack: fix a memory leak in create_pack_file()
  leak tests: mark passing SANITIZE=leak tests as leak-free
  leak tests: don't skip some tests under SANITIZE=leak
  test-lib: have the "check" mode for SANITIZE=leak consider leak logs
  test-lib: add a GIT_TEST_PASSING_SANITIZE_LEAK=check mode
  test-lib: simplify by removing test_external
  tests: move copy/pasted PERL + Test::More checks to a lib-perl.sh
  t/Makefile: don't remove test-results in "clean-except-prove-cache"
  test-lib: add a SANITIZE=leak logging mode
  t/README: reword the "GIT_TEST_PASSING_SANITIZE_LEAK" description
  test-lib: add a --invert-exit-code switch
  test-lib: fix GIT_EXIT_OK logic errors, use BAIL_OUT
  test-lib: don't set GIT_EXIT_OK before calling test_atexit_handler
  test-lib: use $1, not $@ in test_known_broken_{ok,failure}_
2022-08-12 13:19:08 -07:00
Junio C Hamano
acd3bce63f Merge branch 'cl/rerere-train-with-no-sign' into maint
"rerere-train" script (in contrib/) used to honor commit.gpgSign
while recreating the throw-away merges.
source: <PH7PR14MB5594A27B9295E95ACA4D6A69CE8F9@PH7PR14MB5594.namprd14.prod.outlook.com>

* cl/rerere-train-with-no-sign:
  contrib/rerere-train: avoid useless gpg sign in training
2022-08-10 21:52:33 -07:00
Junio C Hamano
6d97f440e5 Merge branch 'ca/unignore-local-installation-on-windows'
Fix build procedure for Windows that uses CMake so that it can pick
up the shell interpreter from local installation location.

* ca/unignore-local-installation-on-windows:
  cmake: support local installations of git
2022-08-08 13:13:13 -07:00
Junio C Hamano
5d2bf34c22 Merge branch 'ld/osx-keychain-usage-fix' into maint
Workaround for a compiler warning against use of die() in
osx-keychain (in contrib/).
source: <pull.1293.git.1658251503775.gitgitgadget@gmail.com>

* ld/osx-keychain-usage-fix:
  osx-keychain: fix compiler warning
2022-08-05 15:51:37 -07:00
Junio C Hamano
f0f9a033ed Merge branch 'cl/rerere-train-with-no-sign'
"rerere-train" script (in contrib/) used to honor commit.gpgSign
while recreating the throw-away merges.
source: <PH7PR14MB5594A27B9295E95ACA4D6A69CE8F9@PH7PR14MB5594.namprd14.prod.outlook.com>

* cl/rerere-train-with-no-sign:
  contrib/rerere-train: avoid useless gpg sign in training
2022-08-01 09:58:38 -07:00
Ævar Arnfjörð Bjarmason
5beca49a0b test-lib: simplify by removing test_external
Remove the "test_external" function added in [1]. This arguably makes
the output of t9700-perl-git.sh and friends worse. But as we'll argue
below the trade-off is worth it, since "chaining" to another TAP
emitter in test-lib.sh is more trouble than it's worth.

The new output of t9700-perl-git.sh is now:

	$ ./t9700-perl-git.sh
	ok 1 - set up test repository
	ok 2 - use t9700/test.pl to test Git.pm
	# passed all 2 test(s)
	1..2

Whereas before this change it would be:

	$ ./t9700-perl-git.sh
	ok 1 - set up test repository
	# run 1: Perl API (perl /home/avar/g/git/t/t9700/test.pl)
	ok 2 - use Git;
	[... omitting tests 3..46 from t/t9700/test.pl ...]
	ok 47 - unquote escape sequences
	1..47
	# test_external test Perl API was ok
	# test_external_without_stderr test no stderr: Perl API was ok

At the time of its addition supporting "test_external" was easy, but
when test-lib.sh itself started to emit TAP in [2] we needed to make
everything surrounding the emission of the plan consider
"test_external". I added that support in [2] so that we could run:

	prove ./t9700-perl-git.sh :: -v

But since then in [3] the door has been closed on combining
$HARNESS_ACTIVE and -v, we'll now just die:

	$ prove ./t9700-perl-git.sh :: -v
	Bailout called.  Further testing stopped:  verbose mode forbidden under TAP harness; try --verbose-log
	FAILED--Further testing stopped: verbose mode forbidden under TAP harness; try --verbose-log

So the only use of this has been that *if* we had failure in one of
these tests we could e.g. in CI see which test failed based on the
test number. Now we'll need to look at the full verbose logs to get
that same information.

I think this trade-off is acceptable given the reduction in
complexity, and it brings these tests in line with other similar
tests, e.g. the reftable tests added in [4] will be condensed down to
just one test, which invokes the C helper:

	$ ./t0032-reftable-unittest.sh
	ok 1 - unittests
	# passed all 1 test(s)
	1..1

It would still be nice to have that ":: -v" form work again, it
never *really* worked, but even though we've had edge cases test
output screwing up the TAP it mostly worked between d998bd4ab6 and
[3], so we may have been overzealous in forbidding it outright.

I have local patches which I'm planning to submit sooner than later
that get us to that goal, and in a way that isn't buggy. In the
meantime getting rid of this special case makes hacking on this area
of test-lib.sh easier, as we'll do in subsequent commits.

The switch from "perl" to "$PERL_PATH" here is because "perl" is
defined as a shell function in the test suite, see a5bf824f3b (t:
prevent '-x' tracing from interfering with test helpers' stderr,
2018-02-25). On e.g. the OSX CI the "command perl"... will be part of
the emitted stderr.

1. fb32c41008 (t/test-lib.sh: add test_external and
   test_external_without_stderr, 2008-06-19)
2. d998bd4ab6 (test-lib: Make the test_external_* functions
   TAP-aware, 2010-06-24)
3. 614fe01521 (test-lib: bail out when "-v" used under
   "prove", 2016-10-22)
4. ef8a6c6268 (reftable: utility functions, 2021-10-07)

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-07-27 16:35:40 -07:00