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Brandon Williams e3a434468f run-command: use the async-signal-safe execv instead of execvp
Convert the function used to exec from 'execvp()' to 'execv()' as the (p)
variant of exec isn't async-signal-safe and has the potential to call malloc
during the path resolution it performs.  Instead we simply do the path
resolution ourselves during the preparation stage prior to forking.  There also
don't exist any portable (p) variants which also take in an environment to use
in the exec'd process.  This allows easy migration to using 'execve()' in a
future patch.

Also, as noted in [1], in the event of an ENOEXEC the (p) variants of
exec will attempt to execute the command by interpreting it with the
'sh' utility.  To maintain this functionality, if 'execv()' fails with
ENOEXEC, start_command will atempt to execute the command by
interpreting it with 'sh'.

[1] http://pubs.opengroup.org/onlinepubs/009695399/functions/exec.html

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-04-20 17:55:32 -07:00
Documentation Twelfth batch for 2.13 2017-04-16 23:30:49 -07:00
block-sha1
builtin Merge branch 'js/difftool-builtin' 2017-04-16 23:29:34 -07:00
ci travis-ci: build and test Git on Windows 2017-03-28 12:24:48 -07:00
compat Merge branch 'js/mingw-isatty' 2017-02-16 14:45:13 -08:00
contrib Merge branch 'jc/bs-t-is-not-a-tab-for-sed' 2017-04-16 23:29:29 -07:00
ewah Merge branch 'jk/ewah-use-right-type-in-sizeof' into maint 2017-03-21 15:03:24 -07:00
git-gui
gitk-git
gitweb
mergetools
perl Merge branch 'svn-escape-backslash' of git://bogomips.org/git-svn 2017-02-20 22:01:59 -08:00
po l10n: de: translate describe debug terms 2017-03-27 13:45:30 -07:00
ppc
refs Merge branch 'bc/object-id' 2017-03-17 13:50:25 -07:00
sha1dc sha1dc: avoid CPP macro collisions 2017-03-26 15:34:44 -07:00
t t0061: run_command executes scripts without a #! line 2017-04-20 17:55:32 -07:00
templates
vcs-svn
xdiff
.gitattributes
.gitignore
.mailmap Git 2.12.2 2017-03-24 13:31:01 -07:00
.travis.yml travis-ci: build and test Git on Windows 2017-03-28 12:24:48 -07:00
COPYING
GIT-VERSION-GEN Git 2.12.2 2017-03-24 12:59:15 -07:00
INSTALL
LGPL-2.1
Makefile Merge branch 'ab/regen-perl-mak-with-different-perl' 2017-04-16 23:29:33 -07:00
README.md README: create HTTP/HTTPS links from URLs in Markdown 2017-03-01 14:45:45 -08:00
RelNotes Prepare for 2.12.3 2017-03-28 13:54:14 -07:00
abspath.c prefix_filename: simplify windows #ifdef 2017-03-21 11:18:41 -07:00
aclocal.m4
advice.c
advice.h
alias.c
alloc.c
apply.c prefix_filename: return newly allocated string 2017-03-21 11:18:41 -07:00
apply.h
archive-tar.c
archive-zip.c
archive.c
archive.h
argv-array.c
argv-array.h
attr.c pathspec: allow querying for attributes 2017-03-13 15:28:54 -07:00
attr.h pathspec: allow querying for attributes 2017-03-13 15:28:54 -07:00
base85.c
bisect.c replace unchecked snprintf calls with heap buffers 2017-03-30 14:59:50 -07:00
bisect.h
blob.c
blob.h
branch.c create_branch: use xstrfmt for reflog message 2017-03-30 14:59:50 -07:00
branch.h branch: record creation of renamed branch in HEAD's log 2017-02-20 22:04:47 -08:00
builtin.h
bulk-checkin.c encode_in_pack_object_header: respect output buffer length 2017-03-24 12:34:07 -07:00
bulk-checkin.h
bundle.c
bundle.h
cache-tree.c
cache-tree.h
cache.h Merge branch 'jk/snprintf-cleanups' 2017-04-16 23:29:26 -07:00
check-builtins.sh
check-racy.c
check_bindir
color.c
color.h
column.c
column.h
combine-diff.c combine-diff: replace malloc/snprintf with xstrfmt 2017-03-30 14:59:50 -07:00
command-list.txt
commit-slab.h
commit.c Merge branch 'rs/commit-parsing-optim' into maint 2017-03-21 15:03:29 -07:00
commit.h Merge branch 'rs/log-email-subject' 2017-03-10 13:24:24 -08:00
common-main.c
config.c Merge branch 'jk/parse-config-key-cleanup' into maint 2017-03-28 13:52:19 -07:00
config.mak.in
config.mak.uname Merge branch 'rj/remove-unused-mktemp' into maint 2017-03-21 15:03:24 -07:00
configure.ac wrapper.c: remove unused gitmkstemps() function 2017-02-28 11:54:21 -08:00
connect.c
connect.h
connected.c
connected.h
convert.c
convert.h
copy.c
credential-cache--daemon.c
credential-cache.c credential-cache: use XDG_CACHE_HOME for socket 2017-03-17 11:19:40 -07:00
credential-store.c
credential.c
credential.h
csum-file.c
csum-file.h
ctype.c
daemon.c daemon: use an argv_array to exec children 2017-03-30 14:59:50 -07:00
date.c
decorate.c
decorate.h
delta.h
diff-delta.c
diff-lib.c
diff-no-index.c prefix_filename: return newly allocated string 2017-03-21 11:18:41 -07:00
diff.c diff: avoid fixed-size buffer for patch-ids 2017-03-30 14:58:29 -07:00
diff.h
diffcore-break.c
diffcore-delta.c
diffcore-order.c
diffcore-pickaxe.c Merge branch 'js/regexec-buf' into maint 2017-03-28 13:52:24 -07:00
diffcore-rename.c
diffcore.h
dir-iterator.c
dir-iterator.h
dir.c Merge branch 'sb/checkout-recurse-submodules' 2017-03-28 14:05:58 -07:00
dir.h
editor.c
entry.c entry.c: create submodules when interesting 2017-03-16 14:07:16 -07:00
environment.c Merge branch 'jk/snprintf-cleanups' 2017-04-16 23:29:26 -07:00
exec_cmd.c
exec_cmd.h
fast-import.c odb_mkstemp: write filename into strbuf 2017-03-28 15:28:04 -07:00
fetch-pack.c Merge branch 'mm/fetch-show-error-message-on-unadvertised-object' 2017-03-14 15:23:18 -07:00
fetch-pack.h fetch-pack: move code to report unmatched refs to a function 2017-03-02 11:12:53 -08:00
fmt-merge-msg.h
fsck.c
fsck.h
generate-cmdlist.sh
gettext.c
gettext.h
git-add--interactive.perl Merge branch 'jk/add-i-use-pathspecs' 2017-03-17 13:50:26 -07:00
git-archimport.perl
git-bisect.sh
git-compat-util.h Merge branch 'jk/pack-name-cleanups' into maint 2017-03-28 13:52:25 -07:00
git-cvsexportcommit.perl
git-cvsimport.perl
git-cvsserver.perl
git-difftool--helper.sh
git-filter-branch.sh filter-branch: fix --prune-empty on parentless commits 2017-03-03 12:43:37 -08:00
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 Merge branch 'ls/p4-path-encoding' 2017-02-16 14:45:12 -08:00
git-parse-remote.sh
git-quiltimport.sh
git-rebase--am.sh
git-rebase--interactive.sh
git-rebase--merge.sh
git-rebase.sh
git-remote-testgit.sh
git-request-pull.sh
git-send-email.perl Merge branch 'jh/send-email-one-cc' into maint 2017-03-21 15:03:30 -07:00
git-sh-i18n.sh
git-sh-setup.sh
git-stash.sh stash: keep untracked files intact in stash -k 2017-03-22 14:55:56 -07:00
git-submodule.sh submodule add: respect submodule.active and submodule.<name>.active 2017-03-18 09:51:23 -07:00
git-svn.perl git svn: fix authentication with 'branch' 2017-03-07 21:29:03 +00:00
git-web--browse.sh
git.c Merge branch 'bw/recurse-submodules-relative-fix' 2017-03-30 14:07:15 -07:00
git.rc
gpg-interface.c
gpg-interface.h
graph.c
graph.h
grep.c convert unchecked snprintf into xsnprintf 2017-03-30 14:59:50 -07:00
grep.h
hash.h Makefile: add DC_SHA1 knob 2017-03-17 10:40:25 -07:00
hashmap.c hashmap: add disallow_rehash setting 2017-03-22 13:41:41 -07:00
hashmap.h hashmap: add disallow_rehash setting 2017-03-22 13:41:41 -07:00
help.c
help.h
hex.c hex: introduce parse_oid_hex 2017-02-20 01:11:26 -08:00
http-backend.c
http-fetch.c
http-push.c http-push: don't check return value of lookup_unknown_object() 2017-03-18 10:14:07 -07:00
http-walker.c Merge branch 'ew/http-alternates-as-redirects-warning' into maint 2017-03-28 13:52:23 -07:00
http.c convert unchecked snprintf into xsnprintf 2017-03-30 14:59:50 -07:00
http.h
ident.c ident: do not ignore empty config name/email 2017-02-23 12:58:47 -08:00
imap-send.c convert unchecked snprintf into xsnprintf 2017-03-30 14:59:50 -07:00
iterator.h
khash.h
kwset.c
kwset.h
levenshtein.c
levenshtein.h
line-log.c Merge branch 'vn/line-log-memcpy-size-fix' into maint 2017-03-16 13:56:42 -07:00
line-log.h
line-range.c
line-range.h
list-objects.c
list-objects.h
list.h
ll-merge.c
ll-merge.h
lockfile.c
lockfile.h
log-tree.c pretty: use fmt_output_email_subject() 2017-03-01 15:09:17 -08:00
log-tree.h pretty: use fmt_output_email_subject() 2017-03-01 15:09:17 -08:00
mailinfo.c
mailinfo.h
mailmap.c
mailmap.h
match-trees.c
merge-blobs.c
merge-blobs.h
merge-recursive.c Merge branch 'mm/merge-rename-delete-message' 2017-02-27 13:57:12 -08:00
merge-recursive.h
merge.c
mergesort.c
mergesort.h
mru.c
mru.h
name-hash.c name-hash: perf improvement for lazy_init_name_hash 2017-03-24 11:00:03 -07:00
notes-cache.c
notes-cache.h
notes-merge.c
notes-merge.h
notes-utils.c
notes-utils.h
notes.c notes: do not break note_tree structure in note_tree_consolidate() 2017-03-27 21:21:25 -07:00
notes.h
object.c
object.h
oidset.c
oidset.h
pack-bitmap-write.c odb_mkstemp: write filename into strbuf 2017-03-28 15:28:04 -07:00
pack-bitmap.c
pack-bitmap.h
pack-check.c
pack-objects.c
pack-objects.h
pack-revindex.c
pack-revindex.h
pack-write.c odb_mkstemp: write filename into strbuf 2017-03-28 15:28:04 -07:00
pack.h pack.h: define largest possible encoded object size 2017-03-24 12:34:07 -07:00
pager.c Merge branch 'jk/pager-in-use' 2017-03-28 14:05:59 -07:00
parse-options-cb.c
parse-options.c prefix_filename: return newly allocated string 2017-03-21 11:18:41 -07:00
parse-options.h ref-filter: add --no-contains option to tag/branch/for-each-ref 2017-03-24 12:15:26 -07:00
patch-delta.c
patch-ids.c
patch-ids.h
path.c path.c: add xdg_cache_home 2017-03-13 14:39:36 -07:00
pathspec.c pathspec: allow escaped query values 2017-03-13 15:28:56 -07:00
pathspec.h pathspec: allow querying for attributes 2017-03-13 15:28:54 -07:00
pkt-line.c
pkt-line.h
preload-index.c
pretty.c Merge branch 'rs/log-email-subject' 2017-03-10 13:24:24 -08:00
prio-queue.c
prio-queue.h
progress.c
progress.h
prompt.c
prompt.h
quote.c
quote.h
reachable.c Convert object iteration callbacks to struct object_id 2017-02-22 10:12:15 -08:00
reachable.h
read-cache.c Merge branch 'cc/split-index-config' 2017-03-17 13:50:23 -07:00
ref-filter.c Merge branch 'ab/ref-filter-no-contains' 2017-04-11 00:21:50 -07:00
ref-filter.h ref-filter: add --no-contains option to tag/branch/for-each-ref 2017-03-24 12:15:26 -07:00
reflog-walk.c refs: convert each_reflog_ent_fn to struct object_id 2017-02-22 10:12:15 -08:00
reflog-walk.h
refs.c avoid using mksnpath for refs 2017-03-30 14:59:50 -07:00
refs.h Merge branch 'bc/object-id' 2017-03-17 13:50:25 -07:00
remote-curl.c remote-curl: allow push options 2017-03-22 15:41:21 -07:00
remote-testsvn.c
remote.c Merge branch 'jc/unused-symbols' 2017-04-16 23:29:27 -07:00
remote.h Merge branch 'jc/unused-symbols' 2017-04-16 23:29:27 -07:00
replace_object.c
rerere.c
rerere.h
resolve-undo.c
resolve-undo.h
revision.c Merge branch 'bc/object-id' 2017-03-17 13:50:25 -07:00
revision.h Merge branch 'rs/path-name-safety-cleanup' into maint 2017-03-28 13:52:27 -07:00
run-command.c run-command: use the async-signal-safe execv instead of execvp 2017-04-20 17:55:32 -07:00
run-command.h
send-pack.c Merge branch 'sb/push-options-via-transport' 2017-03-27 10:59:27 -07:00
send-pack.h
sequencer.c Merge branch 'js/rebase-i-reword-to-run-hooks' 2017-03-30 14:07:17 -07:00
sequencer.h
server-info.c
setup.c Merge branch 'bw/recurse-submodules-relative-fix' 2017-03-30 14:07:15 -07:00
sh-i18n--envsubst.c
sha1-array.c
sha1-array.h
sha1-lookup.c
sha1-lookup.h
sha1_file.c Merge branch 'jk/loose-object-info-report-error' 2017-04-16 23:29:30 -07:00
sha1_name.c rev-parse: match @{upstream}, @{u} and @{push} case-insensitively 2017-03-27 10:45:44 -07:00
shallow.c
shell.c
shortlog.h
show-index.c
sideband.c
sideband.h
sigchain.c
sigchain.h
split-index.c split-index: add {add,remove}_split_index() functions 2017-03-01 13:24:21 -08:00
split-index.h split-index: add {add,remove}_split_index() functions 2017-03-01 13:24:21 -08:00
strbuf.c Merge branch 'rs/freebsd-getcwd-workaround' 2017-03-30 14:07:15 -07:00
strbuf.h Merge branch 'jk/interpret-branch-name' into maint 2017-03-28 13:52:22 -07:00
streaming.c
streaming.h
string-list.c
string-list.h
submodule-config.c Merge branch 'sb/checkout-recurse-submodules' 2017-03-28 14:05:58 -07:00
submodule-config.h update submodules: add submodule config parsing 2017-03-15 18:15:54 -07:00
submodule.c Merge branch 'sb/show-diff-for-submodule-in-diff-fix' 2017-04-16 23:29:32 -07:00
submodule.h Merge branch 'sb/checkout-recurse-submodules' 2017-03-28 14:05:58 -07:00
symlinks.c
tag.c
tag.h
tar.h
tempfile.c tempfile: set errno to a known value before calling ferror() 2017-02-17 14:40:29 -08:00
tempfile.h
thread-utils.c
thread-utils.h
tmp-objdir.c
tmp-objdir.h
trace.c
trace.h
trailer.c
trailer.h
transport-helper.c transport-helper: replace checked snprintf with xsnprintf 2017-03-30 14:59:50 -07:00
transport.c Merge branch 'mm/fetch-show-error-message-on-unadvertised-object' into maint 2017-03-28 13:52:22 -07:00
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
unpack-trees.c unpack-trees.c: align submodule error message to the other error messages 2017-03-29 15:47:36 -07:00
unpack-trees.h unpack-trees: check if we can perform the operation for submodules 2017-03-16 14:07:16 -07:00
upload-pack.c upload-pack: report "not our ref" to client 2017-02-23 12:14:40 -08:00
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 Merge branch 'rs/strbuf-add-real-path' into maint 2017-03-28 13:52:19 -07:00
worktree.h
wrap-for-bin.sh
wrapper.c wrapper.c: remove unused gitmkstemps() function 2017-02-28 11:54:21 -08:00
write_or_die.c
ws.c
wt-status.c Merge branch 'sb/wt-status-cleanup' into maint 2017-03-28 13:52:26 -07:00
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-.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). To subscribe to the list, send an email with just "subscribe git" in the body to majordomo@vger.kernel.org. The mailing list archives are available at https://public-inbox.org/git/, http://marc.info/?l=git and other archival sites.

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