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Jeff King a6ca601cdf upload-pack: use PARSE_OBJECT_SKIP_HASH_CHECK in more places 
In commit 0bc2557951 (upload-pack: skip parse-object re-hashing of
"want" objects, 2022-09-06), we optimized the parse_object() calls for
v2 "want" lines from the client so that they avoided parsing blobs, and
so that they used the commit-graph rather than parsing commit objects
from scratch.

We should extend that to two other spots:

  1. We parse "have" objects in the got_oid() function. These won't
     generally be non-commits (unlike "want" lines from a partial
     clone). But we still benefit from the use of the commit-graph.

  2. For v0, the "want" lines are parsed in receive_needs(). These are
     also less likely to be non-commits because by default they have to
     be ref tips. There are config options you might set to allow
     non-tip objects, but you'd mostly do so to support partial clones,
     and clients recent enough to support partial clone will generally
     speak v2 anyway.

So I don't expect this change to improve performance much for day-to-day
operations. But both are possible denial-of-service vectors, where an
attacker can waste our time by sending over a large number of objects to
parse (of course we may waste even more time serving a pack to them, but
we try as much as possible to optimize that in pack-objects; we should
do what we can here in upload-pack, too).

With this patch, running p5600 with GIT_TEST_PROTOCOL_VERSION=0 shows
similar results to what we saw in 0bc2557951 (which ran with the v2
protocol by default). Here are the numbers for linux.git:

  Test                          HEAD^                 HEAD
  -----------------------------------------------------------------------------
  5600.3: checkout of result    50.91(87.95+2.93)     41.75(79.00+3.18) -18.0%

Or for a more extreme (and malicious) case, we can claim to "have" every
blob in git.git over the v0 protocol:

  $ {
      echo "0032want $(git rev-parse HEAD)"
      printf 0000
      git cat-file --batch-all-objects --batch-check='%(objectname) %(objecttype)' |
      perl -alne 'print "0032have $F[0]" if $F[1] eq "blob"'
    } >input

  $ time ./git.old upload-pack . <input >/dev/null
  real	0m52.951s
  user	0m51.633s
  sys	0m1.304s

  $ time ./git.new upload-pack . <input >/dev/null
  real	0m0.261s
  user	0m0.156s
  sys	0m0.105s

(Note that these don't actually compute a pack because of the hacky
protocol usage, so those numbers are representing the raw blob-parsing
effort done by upload-pack).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
 		2024-02-28 14:42:01 -08:00
.github l10n: ci: disable cache for setup-go to suppress warnings 2024-02-16 11:51:19 +08:00
Documentation upload-pack: disallow object-info capability by default 2024-02-28 14:42:01 -08:00
block-sha1
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builtin upload-pack: always turn off save_commit_buffer 2024-02-28 14:42:01 -08:00
ci Merge branch 'js/ci-discard-prove-state' into maint-2.43 2024-02-08 16:22:00 -08:00
compat Merge branch 'js/win32-retry-pipe-write-on-enospc' into maint-2.43 2024-02-13 14:44:51 -08:00
contrib Merge branch 'pb/complete-config' 2024-02-14 15:36:06 -08:00
ewah ewah: implement `bitmap_is_empty()` 2023-12-14 14:38:07 -08:00
git-gui Merge branch 'js/update-urls-in-doc-and-comment' into maint-2.43 2024-02-08 16:22:01 -08:00
gitk-git doc: switch links to https 2023-11-26 10:07:05 +09:00
gitweb Merge branch 'js/update-urls-in-doc-and-comment' into maint-2.43 2024-02-08 16:22:01 -08:00
mergetools
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negotiator treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
oss-fuzz Merge branch 'js/oss-fuzz-build-in-ci' 2024-01-29 16:03:00 -08:00
perl Merge branch 'js/update-urls-in-doc-and-comment' into maint-2.43 2024-02-08 16:22:01 -08:00
po l10n: zh_TW: Git 2.44 2024-02-18 21:03:43 +08:00
refs Merge branch 'ps/worktree-refdb-initialization' 2024-01-26 08:54:46 -08:00
reftable Merge branch 'jc/comment-style-fixes' into maint-2.43 2024-02-13 14:44:48 -08:00
sha1 avoid SHA-1 functions deprecated in OpenSSL 3+ 2023-08-01 08:34:56 -07:00
sha1collisiondetection@855827c583
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sha1dc doc: refer to internet archive 2023-11-26 10:07:06 +09:00
sha256 Merge branch 'ew/hash-with-openssl-evp' 2023-08-09 16:18:15 -07:00
t upload-pack: disallow object-info capability by default 2024-02-28 14:42:01 -08:00
templates Merge branch 'jp/use-diff-index-in-pre-commit-sample' into maint-2.43 2024-02-08 16:22:02 -08:00
trace2 Merge branch 'en/header-cleanup' into maint-2.43 2024-02-08 16:22:10 -08:00
xdiff
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.cirrus.yml Merge branch 'cb/use-freebsd-13-2-at-cirrus-ci' 2024-02-06 14:31:22 -08:00
.clang-format clang-format: fix typo in comment 2023-11-01 12:24:19 +09:00
.editorconfig
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.gitattributes
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.gitignore replay: introduce new builtin 2023-11-26 10:10:48 +09:00
.gitlab-ci.yml ci: add macOS jobs to GitLab CI 2024-01-18 11:53:17 -08:00
.gitmodules
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.mailmap mailmap: change primary address for Derrick Stolee 2023-10-12 10:59:36 -07:00
.tsan-suppressions
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CODE_OF_CONDUCT.md CoC: whitespace fix 2024-01-23 10:40:10 -08:00
COPYING
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GIT-VERSION-GEN Git 2.43.3 2024-02-22 16:14:53 -08:00
INSTALL Merge branch 'js/update-urls-in-doc-and-comment' into maint-2.43 2024-02-08 16:22:01 -08:00
LGPL-2.1
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Makefile Merge branch 'js/update-urls-in-doc-and-comment' into maint-2.43 2024-02-08 16:22:01 -08:00
README.md Merge branch 'jc/majordomo-to-subspace' into maint-2.43 2024-02-13 14:44:50 -08:00
RelNotes Git 2.43.3 2024-02-22 16:13:38 -08:00
SECURITY.md
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abspath.c
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add-interactive.c Merge branch 'jk/unused-post-2.42' 2023-09-07 15:06:07 -07:00
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add-patch.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
advice.c advice: allow disabling the automatic hint in advise_if_enabled() 2024-01-16 13:07:00 -08:00
advice.h branch: make the advice to force-deleting a conditional one 2024-01-11 17:15:54 -08:00
alias.c Merge branch 'cw/compat-util-header-cleanup' 2023-07-17 11:30:42 -07:00
alias.h
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alloc.c
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alloc.h git-compat-util: move alloc macros to git-compat-util.h 2023-07-05 11:42:31 -07:00
apply.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
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archive-tar.c archive.h: remove unnecessary include 2023-12-26 12:04:31 -08:00
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archive.c Merge branch 'en/header-cleanup' into maint-2.43 2024-02-08 16:22:10 -08:00
archive.h archive.h: remove unnecessary include 2023-12-26 12:04:31 -08:00
attr.c attr: add builtin objectmode values support 2023-12-28 13:21:52 -08:00
attr.h attr: add attr.tree for setting the treeish to read attributes from 2023-10-13 11:43:29 -07:00
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bisect.c Merge branch 'js/check-null-from-read-object-file' 2024-02-14 15:36:06 -08:00
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blame.c blame.h: remove unnecessary includes 2023-12-26 12:04:32 -08:00
blame.h blame.h: remove unnecessary includes 2023-12-26 12:04:32 -08:00
blob.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
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bloom.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
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branch.c Merge branch 'rj/status-bisect-while-rebase' into maint-2.43 2024-02-08 16:22:04 -08:00
branch.h
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builtin.h replay: introduce new builtin 2023-11-26 10:10:48 +09:00
bulk-checkin.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
bulk-checkin.h bulk-checkin: only support blobs in index_bulk_checkin 2023-09-26 10:17:56 -07:00
bundle-uri.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
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bundle.c Merge branch 'dk/bundle-i18n-more' 2023-07-25 12:05:24 -07:00
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cache-tree.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
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chunk-format.c chunk-format: drop pair_chunk_unsafe() 2023-10-09 15:55:02 -07:00
chunk-format.h chunk-format: drop pair_chunk_unsafe() 2023-10-09 15:55:02 -07:00
color.c hex-ll: separate out non-hash-algo functions 2023-09-29 15:14:56 -07:00
color.h config: inline git_color_default_config 2023-06-28 14:06:38 -07:00
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commit-graph.c Merge branch 'en/header-cleanup' into maint-2.43 2024-02-08 16:22:10 -08:00
commit-graph.h Merge branch 'ps/do-not-trust-commit-graph-blindly-for-existence' 2023-11-08 11:03:59 +09:00
commit-reach.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
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commit.c Merge branch 'en/header-cleanup' into maint-2.43 2024-02-08 16:22:10 -08:00
commit.h commit: ignore_non_trailer computes number of bytes to ignore 2023-10-20 14:25:12 -07:00
common-main.c
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config.c Merge branch 'en/header-cleanup' into maint-2.43 2024-02-08 16:22:10 -08:00
config.h config: factor out global config file retrieval 2024-01-18 12:17:41 -08:00
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config.mak.in
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config.mak.uname Makefile: detect new Homebrew location for ARM-based Macs 2024-01-18 11:53:17 -08:00
configure.ac global: convert trivial usages of `test <expr> -a/-o <expr>` 2023-11-11 09:21:00 +09:00
connect.c Merge branch 'gc/config-context' 2023-07-06 11:54:48 -07:00
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convert.c Merge branch 'cw/compat-util-header-cleanup' 2023-07-17 11:30:42 -07:00
convert.h config: use git_config_string() for core.checkRoundTripEncoding 2023-12-09 08:26:22 +09:00
copy.c treewide: remove unnecessary includes for wrapper.h 2023-07-05 11:41:59 -07:00
copy.h
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credential.c credential: mark unused parameter in urlmatch callback 2023-08-29 17:56:26 -07:00
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csum-file.c Merge branch 'ew/hash-with-openssl-evp' 2023-09-13 10:07:57 -07:00
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ctype.c kwset: move translation table from ctype 2023-07-05 11:41:18 -07:00
daemon.c daemon: free listen_addr before returning 2023-10-05 14:54:58 -07:00
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decorate.c decorate: add clear_decoration() function 2023-10-05 14:54:55 -07:00
decorate.h decorate: add clear_decoration() function 2023-10-05 14:54:55 -07:00
delta-islands.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
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diagnose.c dir.[ch]: add 'follow_symlink' arg to 'get_dtype' 2023-10-09 15:53:13 -07:00
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diff-lib.c Merge branch 'en/header-cleanup' 2024-01-08 14:05:15 -08:00
diff-merges.c diff-merges: introduce '--dd' option 2023-10-09 12:47:29 -07:00
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diff-no-index.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
diff.c Merge branch 'jx/dirstat-parseopt-help' 2024-02-15 15:14:48 -08:00
diff.h diff --stat: set the width defaults in a helper function 2023-09-29 15:46:06 -07:00
diffcore-break.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
diffcore-delta.c Merge branch 'en/diffcore-delta-final-line-fix' into maint-2.43 2024-02-13 14:44:48 -08:00
diffcore-order.c
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diffcore-rename.c git-compat-util: move alloc macros to git-compat-util.h 2023-07-05 11:42:31 -07:00
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dir-iterator.c git-compat-util: move alloc macros to git-compat-util.h 2023-07-05 11:42:31 -07:00
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dir.c Merge branch 'en/header-cleanup' 2024-01-08 14:05:15 -08:00
dir.h dir.[ch]: add 'follow_symlink' arg to 'get_dtype' 2023-10-09 15:53:13 -07:00
editor.c treewide: remove unnecessary includes for wrapper.h 2023-07-05 11:41:59 -07:00
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entry.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
entry.h wrapper: reduce scope of remove_or_warn() 2023-09-29 15:14:56 -07:00
environment.c config: use git_config_string() for core.checkRoundTripEncoding 2023-12-09 08:26:22 +09:00
environment.h add core.maxTreeDepth config 2023-08-31 15:51:07 -07:00
exec-cmd.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
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fetch-pack.c Merge branch 'sd/negotiate-trace-fix' into maint-2.43 2024-02-13 14:44:50 -08:00
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fmt-merge-msg.c Merge branch 'cw/compat-util-header-cleanup' 2023-07-17 11:30:42 -07:00
fmt-merge-msg.h config: add ctx arg to config_fn_t 2023-06-28 14:06:39 -07:00
fsck.c Merge branch 'en/header-cleanup' into maint-2.43 2024-02-08 16:22:10 -08:00
fsck.h fsck: detect very large tree pathnames 2023-08-31 15:51:07 -07:00
fsmonitor--daemon.h fsmonitor--daemon.h: remove unnecessary includes 2023-12-26 12:04:32 -08:00
fsmonitor-ipc.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:33 -08:00
fsmonitor-ipc.h
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fsmonitor-path-utils.h
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fsmonitor-settings.c fsmonitor: mark some maybe-unused parameters 2023-09-18 15:56:14 -07:00
fsmonitor-settings.h
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fsmonitor.c
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generate-cmdlist.sh
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gettext.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
gettext.h
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git-archimport.perl perl: bump the required Perl version to 5.8.1 from 5.8.0 2023-11-17 07:26:32 +09:00
git-compat-util.h Merge branch 'tb/multi-pack-verbatim-reuse' 2024-01-12 16:09:56 -08:00
git-curl-compat.h
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git-cvsexportcommit.perl perl: bump the required Perl version to 5.8.1 from 5.8.0 2023-11-17 07:26:32 +09:00
git-cvsimport.perl Merge branch 'js/update-urls-in-doc-and-comment' into maint-2.43 2024-02-08 16:22:01 -08:00
git-cvsserver.perl perl: bump the required Perl version to 5.8.1 from 5.8.0 2023-11-17 07:26:32 +09:00
git-difftool--helper.sh
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git-filter-branch.sh
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git-instaweb.sh doc: switch links to https 2023-11-26 10:07:05 +09:00
git-merge-octopus.sh
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git-p4.py Merge branch 'jt/p4-spell-re-with-raw-string' 2024-02-06 14:31:20 -08:00
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git-send-email.perl Merge branch 'tz/send-email-negatable-options' into maint-2.43 2024-02-08 16:22:01 -08:00
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git-svn.perl Merge branch 'tz/send-email-negatable-options' into maint-2.43 2024-02-08 16:22:01 -08:00
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git-zlib.c
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git.c replay: introduce new builtin 2023-11-26 10:10:48 +09:00
git.rc
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gpg-interface.c Merge branch 'jc/sign-buffer-failure-propagation-fix' into maint-2.43 2024-02-13 14:44:48 -08:00
gpg-interface.h tag: fix sign_buffer() call to create a signed tag 2024-02-07 10:47:25 -08:00
graph.c diff --stat: add config option to limit filename width 2023-09-18 09:39:07 -07:00
graph.h doc: switch links to https 2023-11-26 10:07:05 +09:00
grep.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
grep.h config: add ctx arg to config_fn_t 2023-06-28 14:06:39 -07:00
hash-ll.h Merge branch 'ew/hash-with-openssl-evp' 2023-08-09 16:18:15 -07:00
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help.c help: handle NULL value for alias.* config 2023-12-09 08:24:47 +09:00
help.h
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hex.c hex-ll: separate out non-hash-algo functions 2023-09-29 15:14:56 -07:00
hex.h hex-ll: separate out non-hash-algo functions 2023-09-29 15:14:56 -07:00
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http-backend.c http-backend: new rpc-service for git-upload-archive 2024-01-22 07:54:37 -08:00
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http-push.c Merge branch 'es/some-up-to-date-messages-must-stay' 2024-01-26 08:54:45 -08:00
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ident.c Merge branch 'bc/ident-dot-is-no-longer-crud-letter' 2023-08-09 16:18:15 -07:00
ident.h config: add ctx arg to config_fn_t 2023-06-28 14:06:39 -07:00
imap-send.c Merge branch 'pb/imap-send-wo-curl-build-fix' into maint-2.43 2024-02-12 09:57:59 -08:00
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mailinfo.c Merge branch 'jk/mailinfo-iterative-unquote-comment' into maint-2.43 2024-02-08 16:22:03 -08:00
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mem-pool.c mem-pool: simplify alignment calculation 2023-12-28 12:22:58 -08:00
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merge-blobs.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
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merge-ll.c merge-ll: expose revision names to custom drivers 2024-01-24 13:15:06 -08:00
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merge-ort.c Merge branch 'jc/comment-style-fixes' into maint-2.43 2024-02-13 14:44:48 -08:00
merge-ort.h
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merge-recursive.h merge: introduce {copy|clear}_merge_options() 2023-10-11 13:37:47 -07:00
merge.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
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midx.c midx: implement `midx_preferred_pack()` 2023-12-14 14:38:08 -08:00
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object-file.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
object-file.h
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object-name.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
object-name.h
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object-store-ll.h Merge branch 'tb/object-access-overflow-protection' 2023-07-25 12:05:23 -07:00
object-store.h packfile.c: prevent overflow in `load_idx()` 2023-07-14 09:31:34 -07:00
object.c Merge branch 'en/header-split-cache-h-part-3' 2023-06-29 16:43:21 -07:00
object.h
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oid-array.c git-compat-util: move alloc macros to git-compat-util.h 2023-07-05 11:42:31 -07:00
oid-array.h
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oidmap.c
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oidmap.h
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oidset.c
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oidset.h
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oidtree.c git-compat-util: move alloc macros to git-compat-util.h 2023-07-05 11:42:31 -07:00
oidtree.h
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pack-bitmap-write.c Merge branch 'tb/multi-pack-verbatim-reuse' 2024-01-12 16:09:56 -08:00
pack-bitmap.c Merge branch 'tb/pack-bitmap-drop-unused-struct-member' 2024-02-06 14:31:20 -08:00
pack-bitmap.h pack-bitmap: enable reuse from all bitmapped packs 2023-12-14 14:38:09 -08:00
pack-check.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
pack-mtimes.c
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pack-mtimes.h
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pack-objects.c pack-objects: free packing_data in more places 2023-12-14 14:38:07 -08:00
pack-objects.h pack-objects: free packing_data in more places 2023-12-14 14:38:07 -08:00
pack-revindex.c pack-revindex: implement `midx_pair_to_pack_pos()` 2023-12-14 14:38:08 -08:00
pack-revindex.h pack-revindex: implement `midx_pair_to_pack_pos()` 2023-12-14 14:38:08 -08:00
pack-write.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
pack.h
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packfile.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
packfile.h packfile.c: fix a typo in `each_file_in_pack_dir_fn()`'s declaration 2023-11-20 08:15:50 +09:00
pager.c config: add ctx arg to config_fn_t 2023-06-28 14:06:39 -07:00
pager.h
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parallel-checkout.c git-compat-util: move alloc macros to git-compat-util.h 2023-07-05 11:42:31 -07:00
parallel-checkout.h
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parse-options-cb.c parse-options: mark unused parameters in noop callback 2023-09-05 14:48:17 -07:00
parse-options.c Merge branch 'rs/parse-options-with-keep-unknown-abbrev-fix' into maint-2.43 2024-02-13 14:44:48 -08:00
parse-options.h parse-options: make CMDMODE errors more precise 2023-10-29 09:15:18 +09:00
parse.c parse: separate out parsing functions from config.h 2023-09-29 15:14:57 -07:00
parse.h parse: separate out parsing functions from config.h 2023-09-29 15:14:57 -07:00
patch-delta.c
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patch-ids.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
patch-ids.h
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path.c refs: convert MERGE_AUTOSTASH to become a normal pseudo-ref 2024-01-19 11:10:41 -08:00
path.h refs: convert MERGE_AUTOSTASH to become a normal pseudo-ref 2024-01-19 11:10:41 -08:00
pathspec.c attr: enable attr pathspec magic for git-add and git-stash 2023-11-04 17:00:27 +09:00
pathspec.h
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pkt-line.c Merge branch 'jx/sideband-chomp-newline-fix' into maint-2.43 2024-02-08 16:22:11 -08:00
pkt-line.h Merge branch 'jx/sideband-chomp-newline-fix' into maint-2.43 2024-02-08 16:22:11 -08:00
preload-index.c parse: separate out parsing functions from config.h 2023-09-29 15:14:57 -07:00
preload-index.h
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pretty.c pretty: fix ref filtering for %(decorate) formats 2023-10-09 11:25:13 -07:00
pretty.h
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prio-queue.c git-compat-util: move alloc macros to git-compat-util.h 2023-07-05 11:42:31 -07:00
prio-queue.h
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progress.c parse: separate out parsing functions from config.h 2023-09-29 15:14:57 -07:00
progress.h
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promisor-remote.c Merge branch 'gc/config-context' 2023-07-06 11:54:48 -07:00
promisor-remote.h
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prompt.c parse: separate out parsing functions from config.h 2023-09-29 15:14:57 -07:00
prompt.h
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protocol-caps.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
protocol-caps.h
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protocol.c
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protocol.h doc: switch links to https 2023-11-26 10:07:05 +09:00
prune-packed.c
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prune-packed.h
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quote.c git-compat-util: move alloc macros to git-compat-util.h 2023-07-05 11:42:31 -07:00
quote.h
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range-diff.c Merge branch 'kh/range-diff-notes' 2023-09-29 09:04:15 -07:00
range-diff.h
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reachable.c prune: mark rebase autostash and orig-head as reachable 2024-02-09 10:04:59 -08:00
reachable.h
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read-cache-ll.h cache: add fake_lstat() 2023-09-15 17:08:46 -07:00
read-cache.c Merge branch 'en/header-cleanup' 2024-01-08 14:05:15 -08:00
read-cache.h
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rebase-interactive.c Merge branch 'cw/compat-util-header-cleanup' 2023-07-17 11:30:42 -07:00
rebase-interactive.h
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rebase.c parse: separate out parsing functions from config.h 2023-09-29 15:14:57 -07:00
rebase.h
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ref-filter.c Merge branch 'en/header-cleanup' into maint-2.43 2024-02-08 16:22:10 -08:00
ref-filter.h Merge branch 'en/header-cleanup' 2024-01-08 14:05:15 -08:00
reflog-walk.c git-compat-util: move alloc macros to git-compat-util.h 2023-07-05 11:42:31 -07:00
reflog-walk.h
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reflog.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
reflog.h
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refs.c Merge branch 'ps/not-so-many-refs-are-special' 2024-01-29 16:03:00 -08:00
refs.h Merge branch 'ps/worktree-refdb-initialization' 2024-01-26 08:54:46 -08:00
refspec.c git-compat-util: move alloc macros to git-compat-util.h 2023-07-05 11:42:31 -07:00
refspec.h
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remote-curl.c Merge branch 'jx/remote-archive-over-smart-http' 2024-01-30 13:34:12 -08:00
remote.c Merge branch 'en/header-cleanup' 2024-01-08 14:05:15 -08:00
remote.h Merge branch 'jc/retire-cas-opt-name-constant' into maint-2.43 2024-02-08 16:22:09 -08:00
replace-object.c Merge branch 'en/header-split-cache-h-part-3' 2023-06-29 16:43:21 -07:00
replace-object.h Merge branch 'en/header-split-cache-h-part-3' 2023-06-29 16:43:21 -07:00
repo-settings.c pack-objects: enable multi-pack reuse via `feature.experimental` 2024-02-05 15:27:01 -08:00
repository.c refs: convert MERGE_AUTOSTASH to become a normal pseudo-ref 2024-01-19 11:10:41 -08:00
repository.h pack-objects: enable multi-pack reuse via `feature.experimental` 2024-02-05 15:27:01 -08:00
rerere.c Merge branch 'js/check-null-from-read-object-file' 2024-02-14 15:36:06 -08:00
rerere.h
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reset.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
reset.h
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resolve-undo.c Merge branch 'jc/unresolve-removal' 2023-10-02 11:20:00 -07:00
resolve-undo.h checkout: allow "checkout -m path" to unmerge removed paths 2023-07-31 16:16:44 -07:00
revision.c Merge branch 'en/header-cleanup' into maint-2.43 2024-02-08 16:22:10 -08:00
revision.h rev-list: add commit object support in `--missing` option 2023-11-01 12:07:18 +09:00
run-command.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
run-command.h
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sane-ctype.h sane-ctype.h: create header for sane-ctype macros 2023-07-05 11:41:18 -07:00
scalar.c Merge branch 'ds/scalar-updates' into maint-2.42 2023-11-02 16:53:15 +09:00
send-pack.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
send-pack.h
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sequencer.c Merge branch 'vn/rebase-with-cherry-pick-authorship' 2024-02-14 15:36:05 -08:00
sequencer.h sequencer: introduce functions to handle autostashes via refs 2024-01-19 11:10:41 -08:00
serve.c upload-pack: disallow object-info capability by default 2024-02-28 14:42:01 -08:00
serve.h
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server-info.c git-compat-util: move alloc macros to git-compat-util.h 2023-07-05 11:42:31 -07:00
server-info.h
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setup.c Merge branch 'en/header-cleanup' into maint-2.43 2024-02-08 16:22:10 -08:00
setup.h setup: introduce "extensions.refStorage" extension 2024-01-02 09:24:48 -08:00
sh-i18n--envsubst.c doc: switch links to https 2023-11-26 10:07:05 +09:00
sha1dc_git.c
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sha1dc_git.h
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shallow.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
shallow.h
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shared.mak Makefile: simplify output of the libpath_template 2024-01-31 14:43:00 -08:00
shell.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
shortlog.h
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sideband.c Merge branch 'cp/sideband-array-index-comment-fix' into maint-2.43 2024-02-08 16:22:12 -08:00
sideband.h
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sigchain.c git-compat-util: move alloc macros to git-compat-util.h 2023-07-05 11:42:31 -07:00
sigchain.h
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simple-ipc.h
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sparse-index.c Merge branch 'jh/sparse-index-expand-to-path-fix' 2024-02-08 13:20:34 -08:00
sparse-index.h
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split-index.c git-compat-util: move alloc macros to git-compat-util.h 2023-07-05 11:42:31 -07:00
split-index.h
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stable-qsort.c
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statinfo.c Merge branch 'jc/fake-lstat' 2023-12-27 14:52:24 -08:00
statinfo.h cache: add fake_lstat() 2023-09-15 17:08:46 -07:00
strbuf.c hex-ll: separate out non-hash-algo functions 2023-09-29 15:14:56 -07:00
strbuf.h doc: fix some typos, grammar and wording issues 2023-10-05 12:55:38 -07:00
streaming.c treewide: remove unnecessary includes for wrapper.h 2023-07-05 11:41:59 -07:00
streaming.h
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string-list.c git-compat-util: move alloc macros to git-compat-util.h 2023-07-05 11:42:31 -07:00
string-list.h
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strmap.c
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strmap.h
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strvec.c strvec: drop unnecessary include of hex.h 2023-11-03 08:26:55 +09:00
strvec.h strvec: use correct member name in comments 2024-01-12 13:38:07 -08:00
sub-process.c
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sub-process.h
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submodule-config.c Merge branch 'vd/fsck-submodule-url-test' 2024-01-26 08:54:47 -08:00
submodule-config.h Merge branch 'vd/fsck-submodule-url-test' 2024-01-26 08:54:47 -08:00
submodule.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
submodule.h
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symlinks.c
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symlinks.h
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tag.c treewide: remove unnecessary includes for wrapper.h 2023-07-05 11:41:59 -07:00
tag.h
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tar.h
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tempfile.c Merge branch 'cw/compat-util-header-cleanup' 2023-07-17 11:30:42 -07:00
tempfile.h
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thread-utils.c
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thread-utils.h
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tmp-objdir.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
tmp-objdir.h
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trace.c doc: switch links to https 2023-11-26 10:07:05 +09:00
trace.h
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trace2.c Merge branch 'en/header-cleanup' into maint-2.43 2024-02-08 16:22:10 -08:00
trace2.h trace2: fix signature of trace2_def_param() macro 2023-11-23 10:30:32 +09:00
trailer.c Merge branch 'la/trailer-cleanups' into maint-2.43 2024-02-22 16:09:45 -08:00
trailer.h trailer: use offsets for trailer_start/trailer_end 2023-12-20 11:55:04 -08:00
transport-helper.c Merge branch 'jk/fetch-auto-tag-following-fix' 2024-02-02 11:31:51 -08:00
transport-internal.h
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transport.c Merge branch 'es/some-up-to-date-messages-must-stay' 2024-01-26 08:54:45 -08:00
transport.h
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tree-diff.c tree-diff: respect max_allowed_tree_depth 2023-08-31 15:51:08 -07:00
tree-walk.c traverse_trees(): respect max_allowed_tree_depth 2023-08-31 15:51:08 -07:00
tree-walk.h tree-walk: drop MAX_TRAVERSE_TREES macro 2023-08-31 15:51:07 -07:00
tree.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
tree.h read_tree(): respect max_allowed_tree_depth 2023-08-31 15:51:08 -07:00
unicode-width.h unicode: update the width tables to Unicode 15.1 2023-09-25 16:17:28 -07:00
unimplemented.sh
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unix-socket.c
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unix-socket.h
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unix-stream-server.c
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unix-stream-server.h
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unpack-trees.c Merge branch 'cw/prelim-cleanup' 2023-10-10 11:39:14 -07:00
unpack-trees.h tree-walk: drop MAX_TRAVERSE_TREES macro 2023-08-31 15:51:07 -07:00
upload-pack.c upload-pack: use PARSE_OBJECT_SKIP_HASH_CHECK in more places 2024-02-28 14:42:01 -08:00
upload-pack.h
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url.c hex-ll: separate out non-hash-algo functions 2023-09-29 15:14:56 -07:00
url.h
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urlmatch.c hex-ll: separate out non-hash-algo functions 2023-09-29 15:14:56 -07:00
urlmatch.h config: add ctx arg to config_fn_t 2023-06-28 14:06:39 -07:00
usage.c treewide: remove unnecessary includes for wrapper.h 2023-07-05 11:41:59 -07:00
userdiff.c git-compat-util: move alloc macros to git-compat-util.h 2023-07-05 11:42:31 -07:00
userdiff.h
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utf8.c doc: switch links to https 2023-11-26 10:07:05 +09:00
utf8.h doc: switch links to https 2023-11-26 10:07:05 +09:00
varint.c
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varint.h
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version.c
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version.h
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versioncmp.c git-compat-util: move strbuf.c funcs to its header 2023-07-05 11:41:18 -07:00
versioncmp.h
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walker.c
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walker.h
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wildmatch.c
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wildmatch.h
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worktree.c Merge branch 'rj/status-bisect-while-rebase' into maint-2.43 2024-02-08 16:22:04 -08:00
worktree.h worktree: expose interface to look up worktree by name 2024-01-08 13:17:30 -08:00
wrap-for-bin.sh
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wrapper.c treewide: remove unnecessary includes in source files 2023-12-26 12:04:31 -08:00
wrapper.h wrapper: reduce scope of remove_or_warn() 2023-09-29 15:14:56 -07:00
write-or-die.c write-or-die: fix the polarity of GIT_FLUSH environment variable 2024-02-13 11:57:28 -08:00
write-or-die.h
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ws.c
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ws.h
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wt-status.c Merge branch 'rj/status-bisect-while-rebase' into maint-2.43 2024-02-08 16:22:04 -08:00
wt-status.h status: fix branch shown when not only bisecting 2023-10-16 15:05:27 -07:00
xdiff-interface.c Merge branch 'en/header-cleanup' into maint-2.43 2024-02-08 16:22:10 -08:00
xdiff-interface.h config: add ctx arg to config_fn_t 2023-06-28 14:06:39 -07:00

README.md

Build status

Git - fast, scalable, distributed revision control system

Git is a fast, scalable, distributed revision control system with an unusually rich command set that provides both high-level operations and full access to internals.

Git is an Open Source project covered by the GNU General Public License version 2 (some parts of it are under different licenses, compatible with the GPLv2). It was originally written by Linus Torvalds with help of a group of hackers around the net.

Please read the file INSTALL for installation instructions.

Many Git online resources are accessible from https://git-scm.com/ including full documentation and Git related tools.

See Documentation/gittutorial.txt to get started, then see Documentation/giteveryday.txt for a useful minimum set of commands, and Documentation/git-<commandname>.txt for documentation of each command. If git has been correctly installed, then the tutorial can also be read with man gittutorial or git help tutorial, and the documentation of each command with man git-<commandname> or git help <commandname>.

CVS users may also want to read Documentation/gitcvs-migration.txt (man gitcvs-migration or git help cvs-migration if git is installed).

The user discussion and development of Git take place on the Git mailing list -- everyone is welcome to post bug reports, feature requests, comments and patches to git@vger.kernel.org (read Documentation/SubmittingPatches for instructions on patch submission and Documentation/CodingGuidelines).

Those wishing to help with error message, usage and informational message string translations (localization l10) should see po/README.md (a po file is a Portable Object file that holds the translations).

To subscribe to the list, send an email to git+subscribe@vger.kernel.org (see https://subspace.kernel.org/subscribing.html for details). The mailing list archives are available at https://lore.kernel.org/git/, https://marc.info/?l=git and other archival sites.

Issues which are security relevant should be disclosed privately to the Git Security mailing list git-security@googlegroups.com.

The maintainer frequently sends the "What's cooking" reports that list the current status of various development topics to the mailing list. The discussion following them give a good reference for project status, development direction and remaining tasks.

The name "git" was given by Linus Torvalds when he wrote the very first version. He described the tool as "the stupid content tracker" and the name as (depending on your mood):

  • random three-letter combination that is pronounceable, and not actually used by any common UNIX command. The fact that it is a mispronunciation of "get" may or may not be relevant.
  • stupid. contemptible and despicable. simple. Take your pick from the dictionary of slang.
  • "global information tracker": you're in a good mood, and it actually works for you. Angels sing, and a light suddenly fills the room.
  • "goddamn idiotic truckload of sh*t": when it breaks