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Mathias Krause 50b6ad55b0 grep: fall back to interpreter if JIT memory allocation fails Under Linux systems with SELinux's 'deny_execmem' or PaX's MPROTECT enabled, the allocation of PCRE2's JIT rwx memory may be prohibited, making pcre2_jit_compile() fail with PCRE2_ERROR_NOMEMORY (-48): [user@fedora git]$ git grep -c PCRE2_JIT grep.c:1 [user@fedora git]$ # Enable SELinux's W^X policy [user@fedora git]$ sudo semanage boolean -m -1 deny_execmem [user@fedora git]$ # JIT memory allocation fails, breaking 'git grep' [user@fedora git]$ git grep -c PCRE2_JIT fatal: Couldn't JIT the PCRE2 pattern 'PCRE2_JIT', got '-48' Instead of failing hard in this case and making 'git grep' unusable on such systems, simply fall back to interpreter mode, leading to a much better user experience. As having a functional PCRE2 JIT compiler is a legitimate use case for performance reasons, we'll only do the fallback if the supposedly available JIT is found to be non-functional by attempting to JIT compile a very simple pattern. If this fails, JIT is deemed to be non-functional and we do the interpreter fallback. For all other cases, i.e. the simple pattern can be compiled but the user provided cannot, we fail hard as we do now as the reason for the failure must be the pattern itself. To aid users in helping themselves change the error message to include a hint about the '(*NO_JIT)' prefix. Also clip the pattern at 64 characters to ensure the hint will be seen by the user and not internally truncated by the die() function. Cc: Carlo Marcelo Arenas Belón <carenas@gmail.com> Signed-off-by: Mathias Krause <minipli@grsecurity.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>		2023-01-31 11:39:02 -08:00
.github	ci: use a newer `github-script` version	2022-12-10 16:32:16 +09:00
Documentation	Git 2.38.2	2022-12-11 09:34:51 +09:00
block-sha1	…
builtin	Merge branch 'ab/doc-synopsis-and-cmd-usage'	2022-11-29 10:41:06 +09:00
ci	Merge branch 'jx/ci-ubuntu-fix' into maint-2.38	2022-12-10 16:17:47 +09:00
compat	Merge branch 'sz/macos-fsmonitor-symlinks'	2022-11-23 11:22:25 +09:00
contrib	Merge branch 'ab/fewer-the-index-macros'	2022-12-01 18:38:07 +09:00
ewah	…
git-gui	Makefiles: change search through $(MAKEFLAGS) for GNU make 4.4	2022-12-01 07:24:12 +09:00
gitk-git	…
gitweb	…
mergetools	…
negotiator	…
oss-fuzz	…
perl	…
po	l10n: zh_TW.po: Git 2.39-rc2	2022-12-11 01:27:25 +08:00
refs	…
reftable	…
sha1collisiondetection@855827c583	…
sha1dc	…
sha256	…
t	rebase --update-refs: avoid unintended ref deletion	2022-12-09 19:31:45 +09:00
templates	…
trace2	…
xdiff	…
.cirrus.yml	…
.clang-format	…
.editorconfig	…
.gitattributes	…
.gitignore	Merge branch 'ab/coccicheck-incremental'	2022-11-23 11:22:23 +09:00
.gitmodules	…
.mailmap	mailmap: update email address of Matheus Tavares	2022-12-10 09:17:36 +09:00
.tsan-suppressions	…
CODE_OF_CONDUCT.md	…
COPYING	…
GIT-VERSION-GEN	Git 2.39	2022-12-12 09:59:08 +09:00
INSTALL	INSTALL: remove discussion of SHA-1 backends	2022-11-07 22:11:51 -05:00
LGPL-2.1	…
Makefile	Merge branch 'ab/coccicheck-incremental'	2022-11-23 11:22:23 +09:00
README.md	…
RelNotes	…
SECURITY.md	…
abspath.c	…
aclocal.m4	…
add-interactive.c	read-cache API & users: make discard_index() return void	2022-11-21 12:06:15 +09:00
add-interactive.h	…
add-patch.c	read-cache API & users: make discard_index() return void	2022-11-21 12:06:15 +09:00
advice.c	…
advice.h	…
alias.c	…
alias.h	…
alloc.c	…
alloc.h	…
apply.c	…
apply.h	…
archive-tar.c	…
archive-zip.c	…
archive.c	…
archive.h	…
attr.c	…
attr.h	…
banned.h	…
base85.c	…
bisect.c	…
bisect.h	…
blame.c	…
blame.h	…
blob.c	…
blob.h	…
bloom.c	…
bloom.h	…
branch.c	…
branch.h	…
builtin.h	…
bulk-checkin.c	…
bulk-checkin.h	…
bundle-uri.c	…
bundle-uri.h	…
bundle.c	…
bundle.h	…
cache-tree.c	…
cache-tree.h	…
cache.h	cocci: apply "pending" index-compatibility to some "builtin/*.c"	2022-11-21 12:06:15 +09:00
cbtree.c	…
cbtree.h	…
chdir-notify.c	…
chdir-notify.h	…
check-builtins.sh	…
checkout.c	…
checkout.h	…
chunk-format.c	…
chunk-format.h	…
color.c	…
color.h	…
column.c	…
column.h	…
combine-diff.c	…
command-list.txt	…
commit-graph.c	…
commit-graph.h	…
commit-reach.c	…
commit-reach.h	…
commit-slab-decl.h	…
commit-slab-impl.h	…
commit-slab.h	…
commit.c	…
commit.h	…
common-main.c	…
config.c	Merge branch 'pw/config-int-parse-fixes'	2022-11-28 12:13:43 +09:00
config.h	…
config.mak.dev	…
config.mak.in	…
config.mak.uname	…
configure.ac	…
connect.c	…
connect.h	…
connected.c	receive-pack: only use visible refs for connectivity check	2022-11-17 16:22:52 -05:00
connected.h	receive-pack: only use visible refs for connectivity check	2022-11-17 16:22:52 -05:00
convert.c	…
convert.h	…
copy.c	…
credential.c	…
credential.h	…
csum-file.c	…
csum-file.h	…
ctype.c	…
daemon.c	…
date.c	…
date.h	…
decorate.c	…
decorate.h	…
delta-islands.c	delta-islands: free island-related data after use	2022-11-18 18:30:49 -05:00
delta-islands.h	…
delta.h	…
detect-compiler	…
diagnose.c	…
diagnose.h	…
diff-delta.c	…
diff-lib.c	…
diff-merges.c	…
diff-merges.h	…
diff-no-index.c	…
diff.c	Merge branch 'sg/plug-line-log-leaks'	2022-11-28 12:13:46 +09:00
diff.h	…
diffcore-break.c	…
diffcore-delta.c	…
diffcore-order.c	…
diffcore-pickaxe.c	…
diffcore-rename.c	…
diffcore-rotate.c	…
diffcore.h	line-log: free diff queue when processing non-merge commits	2022-11-02 20:16:34 -04:00
dir-iterator.c	…
dir-iterator.h	…
dir.c	…
dir.h	…
editor.c	…
entry.c	…
entry.h	…
environment.c	…
environment.h	…
exec-cmd.c	…
exec-cmd.h	…
fetch-negotiator.c	…
fetch-negotiator.h	…
fetch-pack.c	…
fetch-pack.h	…
fmt-merge-msg.c	…
fmt-merge-msg.h	…
fsck.c	…
fsck.h	…
fsmonitor--daemon.h	…
fsmonitor-ipc.c	…
fsmonitor-ipc.h	…
fsmonitor-path-utils.h	…
fsmonitor-settings.c	…
fsmonitor-settings.h	…
fsmonitor.c	…
fsmonitor.h	…
generate-cmdlist.sh	…
generate-configlist.sh	…
generate-hooklist.sh	…
gettext.c	…
gettext.h	…
git-add--interactive.perl	…
git-archimport.perl	…
git-bisect.sh	bisect--helper: parse subcommand with OPT_SUBCOMMAND	2022-11-11 17:04:57 -05:00
git-compat-util.h	…
git-curl-compat.h	…
git-cvsexportcommit.perl	…
git-cvsimport.perl	…
git-cvsserver.perl	…
git-difftool--helper.sh	…
git-filter-branch.sh	…
git-instaweb.sh	…
git-merge-octopus.sh	…
git-merge-one-file.sh	…
git-merge-resolve.sh	…
git-mergetool--lib.sh	…
git-mergetool.sh	…
git-p4.py	…
git-quiltimport.sh	…
git-request-pull.sh	…
git-send-email.perl	…
git-sh-i18n.sh	…
git-sh-setup.sh	…
git-submodule.sh	submodule--helper: drop "update --prefix <pfx>" for "-C <pfx> update"	2022-11-08 14:55:30 -05:00
git-svn.perl	…
git-web--browse.sh	…
git.c	Merge branch 'ab/submodule-helper-prep-only'	2022-11-23 11:22:22 +09:00
git.rc	…
gpg-interface.c	…
gpg-interface.h	…
graph.c	…
graph.h	…
grep.c	grep: fall back to interpreter if JIT memory allocation fails	2023-01-31 11:39:02 -08:00
grep.h	…
hash-lookup.c	…
hash-lookup.h	…
hash.h	…
hashmap.c	…
hashmap.h	…
help.c	…
help.h	…
hex.c	…
hook.c	…
hook.h	…
http-backend.c	…
http-fetch.c	…
http-push.c	…
http-walker.c	…
http.c	http: redact curl h2h3 headers in info	2022-11-14 17:42:46 -05:00
http.h	…
ident.c	…
imap-send.c	…
iterator.h	…
json-writer.c	…
json-writer.h	…
khash.h	…
kwset.c	…
kwset.h	…
levenshtein.c	…
levenshtein.h	…
line-log.c	line-log: free the diff queues' arrays when processing merge commits	2022-11-02 20:16:34 -04:00
line-log.h	…
line-range.c	…
line-range.h	…
linear-assignment.c	…
linear-assignment.h	…
list-objects-filter-options.c	…
list-objects-filter-options.h	…
list-objects-filter.c	list-objects-filter: plug combine_filter_data leak	2022-11-21 16:43:26 +09:00
list-objects-filter.h	…
list-objects.c	…
list-objects.h	…
list.h	…
ll-merge.c	Merge branch 'rs/no-more-run-command-v'	2022-11-08 17:15:12 -05:00
ll-merge.h	…
lockfile.c	…
lockfile.h	…
log-tree.c	…
log-tree.h	…
ls-refs.c	refs: get rid of global list of hidden refs	2022-11-17 16:22:51 -05:00
ls-refs.h	…
mailinfo.c	…
mailinfo.h	…
mailmap.c	…
mailmap.h	…
match-trees.c	…
mem-pool.c	…
mem-pool.h	…
merge-blobs.c	…
merge-blobs.h	…
merge-ort-wrappers.c	…
merge-ort-wrappers.h	…
merge-ort.c	…
merge-ort.h	…
merge-recursive.c	merge-recursive: fix variable typo in error message	2022-11-27 10:26:10 +09:00
merge-recursive.h	…
merge.c	…
mergesort.h	…
midx.c	…
midx.h	…
name-hash.c	…
notes-cache.c	…
notes-cache.h	…
notes-merge.c	…
notes-merge.h	…
notes-utils.c	…
notes-utils.h	…
notes.c	…
notes.h	…
object-file.c	object-file: use real paths when adding alternates	2022-11-25 09:44:08 +09:00
object-name.c	…
object-store.h	…
object.c	parse_object(): simplify blob conditional	2022-11-22 10:13:54 +09:00
object.h	…
oid-array.c	…
oid-array.h	…
oidmap.c	…
oidmap.h	…
oidset.c	…
oidset.h	…
oidtree.c	…
oidtree.h	…
pack-bitmap-write.c	…
pack-bitmap.c	…
pack-bitmap.h	…
pack-check.c	…
pack-mtimes.c	…
pack-mtimes.h	…
pack-objects.c	…
pack-objects.h	…
pack-revindex.c	…
pack-revindex.h	…
pack-write.c	…
pack.h	…
packfile.c	…
packfile.h	…
pager.c	…
parallel-checkout.c	…
parallel-checkout.h	…
parse-options-cb.c	…
parse-options.c	…
parse-options.h	…
patch-delta.c	…
patch-ids.c	…
patch-ids.h	…
path.c	…
path.h	…
pathspec.c	…
pathspec.h	…
pkt-line.c	…
pkt-line.h	…
preload-index.c	…
pretty.c	…
pretty.h	…
prio-queue.c	…
prio-queue.h	…
progress.c	…
progress.h	…
promisor-remote.c	…
promisor-remote.h	…
prompt.c	…
prompt.h	…
protocol-caps.c	…
protocol-caps.h	…
protocol.c	…
protocol.h	…
prune-packed.c	…
prune-packed.h	…
quote.c	…
quote.h	…
range-diff.c	…
range-diff.h	…
reachable.c	…
reachable.h	…
read-cache.c	read-cache API & users: make discard_index() return void	2022-11-21 12:06:15 +09:00
rebase-interactive.c	…
rebase-interactive.h	…
rebase.c	…
rebase.h	…
ref-filter.c	ref-filter: fix parsing of signatures with CRLF and no body	2022-11-02 21:36:04 -04:00
ref-filter.h	…
reflog-walk.c	…
reflog-walk.h	…
reflog.c	…
reflog.h	…
refs.c	refs: get rid of global list of hidden refs	2022-11-17 16:22:51 -05:00
refs.h	refs: get rid of global list of hidden refs	2022-11-17 16:22:51 -05:00
refspec.c	…
refspec.h	…
remote-curl.c	…
remote.c	…
remote.h	…
replace-object.c	…
replace-object.h	…
repo-settings.c	Merge branch 'es/mark-gc-cruft-as-experimental'	2022-11-08 17:14:48 -05:00
repository.c	{builtin/*,repository}.c: add & use "USE_THE_INDEX_VARIABLE"	2022-11-21 12:06:15 +09:00
repository.h	Merge branch 'es/mark-gc-cruft-as-experimental'	2022-11-08 17:14:48 -05:00
rerere.c	…
rerere.h	…
reset.c	rebase: use 'skip_cache_tree_update' option	2022-11-10 21:49:34 -05:00
reset.h	…
resolve-undo.c	…
resolve-undo.h	…
revision.c	Merge branch 'ps/receive-use-only-advertised'	2022-11-23 11:22:25 +09:00
revision.h	Merge branch 'ps/receive-use-only-advertised'	2022-11-23 11:22:25 +09:00
run-command.c	Merge branch 'rs/no-more-run-command-v'	2022-11-08 17:15:12 -05:00
run-command.h	Merge branch 'rs/no-more-run-command-v'	2022-11-08 17:15:12 -05:00
scalar.c	Merge branch 'js/remove-stale-scalar-repos'	2022-11-23 11:22:23 +09:00
send-pack.c	…
send-pack.h	…
sequencer.c	rebase --update-refs: avoid unintended ref deletion	2022-12-09 19:31:45 +09:00
sequencer.h	sequencer: stop exporting GIT_REFLOG_ACTION	2022-11-09 18:15:43 -05:00
serve.c	…
serve.h	…
server-info.c	…
setup.c	…
sh-i18n--envsubst.c	…
sha1dc_git.c	…
sha1dc_git.h	Makefile & test-tool: replace "DC_SHA1" variable with a "define"	2022-11-07 22:11:51 -05:00
shallow.c	…
shallow.h	…
shared.mak	Merge branch 'ab/gnumake-4.4-fix'	2022-12-01 18:38:07 +09:00
shell.c	…
shortlog.h	…
sideband.c	…
sideband.h	…
sigchain.c	…
sigchain.h	…
simple-ipc.h	…
sparse-index.c	index: raise a bug if the index is materialised more than once	2022-11-04 20:28:28 -04:00
sparse-index.h	…
split-index.c	…
split-index.h	…
stable-qsort.c	…
strbuf.c	…
strbuf.h	…
streaming.c	…
streaming.h	…
string-list.c	…
string-list.h	…
strmap.c	…
strmap.h	…
strvec.c	…
strvec.h	…
sub-process.c	…
sub-process.h	…
submodule-config.c	…
submodule-config.h	…
submodule.c	Merge branch 'jt/submodule-on-demand'	2022-11-23 11:22:25 +09:00
submodule.h	submodule API & "absorbgitdirs": remove "----recursive" option	2022-11-08 14:55:30 -05:00
symlinks.c	…
tag.c	…
tag.h	…
tar.h	…
tempfile.c	…
tempfile.h	…
thread-utils.c	…
thread-utils.h	…
tmp-objdir.c	…
tmp-objdir.h	…
trace.c	…
trace.h	…
trace2.c	…
trace2.h	…
trailer.c	…
trailer.h	…
transport-helper.c	…
transport-internal.h	…
transport.c	…
transport.h	…
tree-diff.c	…
tree-walk.c	…
tree-walk.h	…
tree.c	…
tree.h	…
unicode-width.h	…
unimplemented.sh	…
unix-socket.c	…
unix-socket.h	…
unix-stream-server.c	…
unix-stream-server.h	…
unpack-trees.c	unpack-trees: add 'skip_cache_tree_update' option	2022-11-10 21:49:34 -05:00
unpack-trees.h	unpack-trees: add 'skip_cache_tree_update' option	2022-11-10 21:49:34 -05:00
upload-pack.c	refs: get rid of global list of hidden refs	2022-11-17 16:22:51 -05:00
upload-pack.h	…
url.c	…
url.h	…
urlmatch.c	…
urlmatch.h	…
usage.c	…
userdiff.c	…
userdiff.h	…
utf8.c	…
utf8.h	…
varint.c	…
varint.h	…
version.c	…
version.h	…
versioncmp.c	…
walker.c	…
walker.h	…
wildmatch.c	…
wildmatch.h	…
worktree.c	…
worktree.h	…
wrap-for-bin.sh	…
wrapper.c	…
write-or-die.c	…
ws.c	…
wt-status.c	…
wt-status.h	…
xdiff-interface.c	…
xdiff-interface.h	…
zlib.c	…

README.md

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 with just "subscribe git" in the body to majordomo@vger.kernel.org (not the Git list). The mailing list archives are available at https://lore.kernel.org/git/, http://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