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1490d7d82d
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Jeff King 1490d7d82d is_promisor_object(): fix use-after-free of tree buffer 
Since commit fcc07e980b (is_promisor_object(): free tree buffer after
parsing, 2021-04-13), we'll always free the buffers attached to a
"struct tree" after searching them for promisor links. But there's an
important case where we don't want to do so: if somebody else is already
using the tree!

This can happen during a "rev-list --missing=allow-promisor" traversal
in a partial clone that is missing one or more trees or blobs. The
backtrace for the free looks like this:

      #1 free_tree_buffer tree.c:147
      #2 add_promisor_object packfile.c:2250
      #3 for_each_object_in_pack packfile.c:2190
      #4 for_each_packed_object packfile.c:2215
      #5 is_promisor_object packfile.c:2272
      #6 finish_object__ma builtin/rev-list.c:245
      #7 finish_object builtin/rev-list.c:261
      #8 show_object builtin/rev-list.c:274
      #9 process_blob list-objects.c:63
      #10 process_tree_contents list-objects.c:145
      #11 process_tree list-objects.c:201
      #12 traverse_trees_and_blobs list-objects.c:344
      [...]

We're in the middle of walking through the entries of a tree object via
process_tree_contents(). We see a blob (or it could even be another tree
entry) that we don't have, so we call is_promisor_object() to check it.
That function loops over all of the objects in the promisor packfile,
including the tree we're currently walking. When we're done with it
there, we free the tree buffer. But as we return to the walk in
process_tree_contents(), it's still holding on to a pointer to that
buffer, via its tree_desc iterator, and it accesses the freed memory.

Even a trivial use of "--missing=allow-promisor" triggers this problem,
as the included test demonstrates (it's just a vanilla --blob:none
clone).

We can detect this case by only freeing the tree buffer if it was
allocated on our behalf. This is a little tricky since that happens
inside parse_object(), and it doesn't tell us whether the object was
already parsed, or whether it allocated the buffer itself. But by
checking for an already-parsed tree beforehand, we can distinguish the
two cases.

That feels a little hacky, and does incur an extra lookup in the
object-hash table. But that cost is fairly minimal compared to actually
loading objects (and since we're iterating the whole pack here, we're
likely to be loading most objects, rather than reusing cached results).

It may also be a good direction for this function in general, as there
are other possible optimizations that rely on doing some analysis before
parsing:

  - we could detect blobs and avoid reading their contents; they can't
    link to other objects, but parse_object() doesn't know that we don't
    care about checking their hashes.

  - we could avoid allocating object structs entirely for most objects
    (since we really only need them in the oidset), which would save
    some memory.

  - promisor commits could use the commit-graph rather than loading the
    object from disk

This commit doesn't do any of those optimizations, but I think it argues
that this direction is reasonable, rather than relying on parse_object()
and trying to teach it to give us more information about whether it
parsed.

The included test fails reliably under SANITIZE=address just when
running "rev-list --missing=allow-promisor". Checking the output isn't
strictly necessary to detect the bug, but it seems like a reasonable
addition given the general lack of coverage for "allow-promisor" in the
test suite.

Reported-by: Andrew Olsen <andrew.olsen@koordinates.com>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-08-14 18:03:36 -07:00
.github cmake(install): include vcpkg dlls 2021-03-29 13:49:04 -07:00
block-sha1 block-sha1: drop trailing semicolon from macro definition 2021-03-17 10:20:01 -07:00
builtin lookup_unknown_object(): take a repository argument 2021-04-13 13:18:46 -07:00
ci Merge branch 'tb/pack-revindex-on-disk' 2021-02-12 14:21:04 -08:00
compat Merge branch 'jh/simple-ipc' 2021-04-02 14:43:14 -07:00
contrib Merge branch 'js/cmake-vsbuild' 2021-04-07 16:54:08 -07:00
Documentation The eighth batch 2021-04-08 13:23:26 -07:00
ewah use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
git-gui Merge https://github.com/prati0100/git-gui 2021-03-04 12:38:50 -08:00
gitk-git Merge remote-tracking branch 'paulus/master' into pm/gitk-update 2020-10-03 10:06:27 -07:00
gitweb gitweb/Makefile: conditionally include ../GIT-VERSION-FILE 2020-12-08 16:56:56 -08:00
mergetools mergetools/vimdiff: add vimdiff1 merge tool variant 2021-02-23 11:37:13 -08:00
negotiator use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
perl git-send-email: Respect core.hooksPath setting 2021-03-23 15:02:52 -07:00
po l10n: zh_CN: for git v2.31.0 l10n round 1 and 2 2021-03-15 00:05:25 +08:00
ppc
refs use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
sha1collisiondetection@855827c583
sha1dc
sha256
t is_promisor_object(): fix use-after-free of tree buffer 2022-08-14 18:03:36 -07:00
templates hook: add sample template for push-to-checkout 2020-10-16 08:47:02 -07:00
trace2
xdiff diff: add -I<regex> that ignores matching changes 2020-10-20 12:53:26 -07:00
.cirrus.yml
.clang-format
.editorconfig
.gitattributes CoC: explicitly take any whitespace breakage 2021-01-04 09:44:49 -08:00
.gitignore Merge branch 'fc/random-cleanup' 2020-12-08 15:11:21 -08:00
.gitmodules
.mailmap Add entry for Ramkumar Ramachandra 2021-03-08 09:56:34 -08:00
.travis.yml ci: remove GETTEXT_POISON jobs 2021-01-21 15:50:00 -08:00
.tsan-suppressions replace-object: make replace operations thread-safe 2020-01-17 13:52:14 -08:00
abspath.c abspath: add a function to resolve paths with missing components 2020-12-12 23:35:47 -08:00
aclocal.m4
add-interactive.c Merge branch 'rs/xcalloc-takes-nelem-first' 2021-03-19 15:25:39 -07:00
add-interactive.h
add-patch.c Merge branch 'js/add-i-color-fix' 2020-12-08 15:11:17 -08:00
advice.c push: parse and set flag for "--force-if-includes" 2020-10-03 09:59:19 -07:00
advice.h push: parse and set flag for "--force-if-includes" 2020-10-03 09:59:19 -07:00
alias.c
alias.h
alloc.c commit: move members graph_pos, generation to a slab 2020-06-17 14:37:30 -07:00
alloc.h object: drop parsed_object_pool->commit_count 2020-06-17 14:37:14 -07:00
apply.c Merge branch 'mt/parallel-checkout-part-1' 2021-04-02 14:43:14 -07:00
apply.h
archive-tar.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
archive-zip.c archive: read short blobs in archive.c::write_archive_entry() 2020-09-19 15:56:05 -07:00
archive.c Merge branch 'ab/read-tree' 2021-03-30 14:35:37 -07:00
archive.h archive: expand only a single %(describe) per archive 2021-03-11 13:22:44 -08:00
attr.c Merge branch 'jk/open-dotgitx-with-nofollow' 2021-03-22 14:00:22 -07:00
attr.h
banned.h banned.h: mark ctime_r() and asctime_r() as banned 2020-12-02 14:30:39 -08:00
base85.c
bisect.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
bisect.h bisect: combine args passed to find_bisection() 2020-08-07 15:13:03 -07:00
blame.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
blame.h blame: simplify 'setup_blame_bloom_data' interface 2020-11-01 15:54:15 -08:00
blob.c object: drop parsed_object_pool->commit_count 2020-06-17 14:37:14 -07:00
blob.h
bloom.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
bloom.h bloom: encode out-of-bounds filters as non-empty 2020-09-17 21:55:50 -07:00
branch.c wt-status: tolerate dangling marks 2020-09-02 14:39:25 -07:00
branch.h
builtin.h Merge branch 'ds/maintenance-part-3' 2020-11-18 13:32:53 -08:00
bulk-checkin.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
bulk-checkin.h
bundle.c bundle: arguments can be read from stdin 2021-01-11 21:50:41 -08:00
bundle.h Merge branch 'bc/sha-256-part-3' 2020-08-11 18:04:11 -07:00
cache-tree.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
cache-tree.h cache-tree: extract subtree_pos() 2021-01-23 17:14:07 -08:00
cache.h Merge branch 'mt/parallel-checkout-part-1' 2021-04-02 14:43:14 -07:00
chdir-notify.c
chdir-notify.h
check_bindir
check-builtins.sh
checkout.c config: drop git_config_get_string_const() 2020-08-17 15:35:47 -07:00
checkout.h
chunk-format.c chunk-format: restore duplicate chunk checks 2021-02-18 13:38:16 -08:00
chunk-format.h chunk-format: create read chunk API 2021-02-18 13:38:16 -08:00
CODE_OF_CONDUCT.md CoC: update to version 2.0 + local changes 2021-01-13 17:45:04 -08:00
color.c
color.h
column.c Merge branch 'jk/strvec' 2020-08-10 10:23:57 -07:00
column.h
combine-diff.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
command-list.txt mailmap doc: create a new "gitmailmap(5)" man page 2021-01-12 14:04:39 -08:00
commit-graph.c Merge branch 'ds/commit-graph-generation-config' 2021-03-22 14:00:23 -07:00
commit-graph.h commit-graph: use config to specify generation type 2021-02-25 15:10:41 -08:00
commit-reach.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
commit-reach.h commit-graph: return 64-bit generation number 2021-01-18 16:21:18 -08:00
commit-slab-decl.h Merge branch 'sg/commit-graph-cleanups' into master 2020-07-30 13:20:30 -07:00
commit-slab-impl.h commit-slab: add a function to deep free entries on the slab 2020-06-08 12:28:49 -07:00
commit-slab.h commit-slab: add a function to deep free entries on the slab 2020-06-08 12:28:49 -07:00
commit.c Merge branch 'cm/rebase-i-fixup-amend-reword' 2021-03-26 14:59:03 -07:00
commit.h Merge branch 'cm/rebase-i-fixup-amend-reword' 2021-03-26 14:59:03 -07:00
common-main.c
config.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
config.h Merge branch 'ps/config-env-pairs' 2021-01-25 14:19:19 -08:00
config.mak.dev Merge branch 'jc/sparse-error-for-developer-build' 2020-11-18 13:32:54 -08:00
config.mak.in
config.mak.uname Merge branch 'jh/simple-ipc' 2021-04-02 14:43:14 -07:00
configure.ac Remove support for v1 of the PCRE library 2021-01-23 21:15:43 -08:00
connect.c Merge branch 'jt/clone-unborn-head' 2021-02-17 17:21:40 -08:00
connect.h Merge branch 'bc/sha-256-part-2' 2020-07-06 22:09:13 -07:00
connected.c Merge branch 'rs/more-buffered-io' 2020-08-24 14:54:31 -07:00
connected.h
convert.c Merge branch 'jh/simple-ipc' 2021-04-02 14:43:14 -07:00
convert.h convert: add classification for conv_attrs struct 2021-03-18 13:56:40 -07:00
copy.c
COPYING
credential.c credential: treat CR/LF as line endings in the credential protocol 2020-10-03 10:41:03 -07:00
credential.h
csum-file.c csum-file: make hashwrite() more readable 2021-03-26 14:32:45 -07:00
csum-file.h csum-file: add hashwrite_be64() 2020-11-12 09:40:06 -08:00
ctype.c
daemon.c Merge branch 'rs/daemon-sanitize-dir-sep' 2021-04-08 13:23:26 -07:00
date.c
decorate.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
decorate.h
delta-islands.c
delta-islands.h delta-islands: respect progress flag 2019-06-20 13:29:49 -07:00
delta.h
detect-compiler
diff-delta.c
diff-lib.c fsmonitor: add assertion that fsmonitor is valid to check_removed 2021-03-18 13:31:13 -07:00
diff-merges.c diff-merges: add '--diff-merges=1' as synonym for 'first-parent' 2020-12-21 13:47:32 -08:00
diff-merges.h diff-merges: get rid of now empty diff_merges_init_revs() 2020-12-21 13:47:31 -08:00
diff-no-index.c
diff.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
diff.h Merge branch 'jc/diffcore-rotate' 2021-02-25 16:43:30 -08:00
diffcore-break.c
diffcore-delta.c
diffcore-order.c
diffcore-pickaxe.c
diffcore-rename.c Merge branch 'en/ort-perf-batch-9' 2021-04-08 13:23:26 -07:00
diffcore-rotate.c diff: --{rotate,skip}-to=<path> 2021-02-16 09:30:42 -08:00
diffcore.h Merge branch 'en/ort-perf-batch-9' 2021-04-08 13:23:26 -07:00
dir-iterator.c dir-iterator: add flags parameter to dir_iterator_begin 2019-07-11 13:52:15 -07:00
dir-iterator.h
dir.c Merge branch 'jk/open-dotgitx-with-nofollow' 2021-03-22 14:00:22 -07:00
dir.h exclude: add flags parameter to add_patterns() 2021-02-16 09:41:33 -08:00
editor.c config: fix leaks from git_config_get_string_const() 2020-08-14 10:52:04 -07:00
entry.c Merge branch 'mt/parallel-checkout-part-1' 2021-04-02 14:43:14 -07:00
entry.h entry: add checkout_entry_ca() taking preloaded conv_attrs 2021-03-23 10:34:05 -07:00
environment.c config: allow specifying config entries via envvar pairs 2021-01-15 13:03:45 -08:00
environment.h environment: make getenv_safe() a public function 2021-01-15 13:03:45 -08:00
exec-cmd.c strvec: rename struct fields 2020-07-30 19:18:06 -07:00
exec-cmd.h argv-array: rename to strvec 2020-07-28 15:02:17 -07:00
fetch-negotiator.c negotiator/noop: add noop fetch negotiator 2020-08-18 13:25:05 -07:00
fetch-negotiator.h
fetch-pack.c Merge branch 'll/clone-reject-shallow' 2021-04-08 13:23:25 -07:00
fetch-pack.h builtin/clone.c: add --reject-shallow option 2021-04-01 12:58:58 -07:00
fmt-merge-msg.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
fmt-merge-msg.h
fsck.c fetch-pack: use new fsck API to printing dangling submodules 2021-03-28 19:03:10 -07:00
fsck.h fetch-pack: use new fsck API to printing dangling submodules 2021-03-28 19:03:10 -07:00
fsmonitor.c Merge branch 'jh/fsmonitor-prework' 2021-03-19 15:25:37 -07:00
fsmonitor.h fsmonitor: add assertion that fsmonitor is valid to check_removed 2021-03-18 13:31:13 -07:00
fuzz-commit-graph.c commit-graph: pass a 'struct repository *' in more places 2020-09-09 12:51:48 -07:00
fuzz-pack-headers.c
fuzz-pack-idx.c
generate-cmdlist.sh Fit to Plan 9's ANSI/POSIX compatibility layer 2020-09-09 22:31:31 -07:00
generate-configlist.sh
gettext.c Merge branch 'ab/detox-gettext-tests' 2021-02-10 14:48:33 -08:00
gettext.h tests: remove support for GIT_TEST_GETTEXT_POISON 2021-01-21 15:50:01 -08:00
git-add--interactive.perl Merge branch 'js/add-i-color-fix' 2020-12-08 15:11:17 -08:00
git-archimport.perl
git-bisect.sh bisect--helper: reimplement bisect_skip shell function in C 2021-02-03 14:52:09 -08:00
git-compat-util.h Merge branch 'jk/open-dotgitx-with-nofollow' 2021-03-22 14:00:22 -07:00
git-cvsexportcommit.perl cvsexportcommit: do not run git programs in dashed form 2020-08-26 14:49:52 -07:00
git-cvsimport.perl git-cvsimport: port to SHA-256 2020-06-22 11:21:07 -07:00
git-cvsserver.perl git-cvsserver: port to SHA-256 2020-06-22 11:21:07 -07:00
git-difftool--helper.sh mergetool: break setup_tool out into separate initialization function 2021-02-09 14:09:16 -08:00
git-filter-branch.sh filter-branch: drop $_x40 glob 2021-03-10 14:16:58 -08:00
git-instaweb.sh
git-merge-octopus.sh
git-merge-one-file.sh
git-merge-resolve.sh
git-mergetool--lib.sh Merge branch 'sh/mergetool-hideresolved' 2021-02-17 17:21:41 -08:00
git-mergetool.sh mergetool: do not enable hideResolved by default 2021-03-13 15:30:29 -08:00
git-p4.py Merge branch 'dl/p4-encode-after-kw-expansion' into maint 2021-02-08 14:05:54 -08:00
git-quiltimport.sh
git-rebase--preserve-merges.sh rebase: remove unused function reschedule_last_action 2020-08-12 12:25:42 -07:00
git-request-pull.sh
git-send-email.perl git-send-email: Respect core.hooksPath setting 2021-03-23 15:02:52 -07:00
git-sh-i18n.sh tests: remove support for GIT_TEST_GETTEXT_POISON 2021-01-21 15:50:01 -08:00
git-sh-setup.sh
git-submodule.sh submodule: fix fetch_in_submodule logic 2020-11-24 13:14:09 -08:00
git-svn.perl perl: check for perl warnings while running tests 2020-10-21 23:11:48 -07:00
GIT-VERSION-GEN Git 2.31.1 2021-03-26 14:49:41 -07:00
git-web--browse.sh
git.c Merge branch 'tb/precompose-prefix-too' 2021-02-12 14:21:04 -08:00
git.rc
gpg-interface.c gpg-interface: remove other signature headers before verifying 2021-02-10 23:35:42 -08:00
gpg-interface.h gpg-interface: improve interface for parsing tags 2021-02-10 23:35:42 -08:00
graph.c strvec: rename struct fields 2020-07-30 19:18:06 -07:00
graph.h
grep.c Merge branch 'ab/grep-pcre2-allocfix' 2021-03-22 14:00:23 -07:00
grep.h grep/pcre2: move back to thread-only PCREv2 structures 2021-02-17 16:32:19 -08:00
hash-lookup.c oid_pos(): access table through const pointers 2021-01-28 12:03:26 -08:00
hash-lookup.h oid_pos(): access table through const pointers 2021-01-28 12:03:26 -08:00
hash.h cache.h: move hash/oid functions to hash.h 2020-12-04 13:55:14 -08:00
hashmap.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
hashmap.h hashmap: provide deallocation function names 2020-11-02 12:15:50 -08:00
help.c help.c: help.autocorrect=never means "do not compute suggestions" 2020-11-25 13:02:15 -08:00
help.h help: do not expect built-in commands to be hardlinked 2020-10-07 15:25:10 -07:00
hex.c hex: add functions to parse hex object IDs in any algorithm 2020-02-24 09:33:21 -08:00
http-backend.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
http-fetch.c http-fetch: allow custom index-pack args 2021-02-22 12:07:40 -08:00
http-push.c lookup_unknown_object(): take a repository argument 2021-04-13 13:18:46 -07:00
http-walker.c http: refactor finish_http_pack_request() 2020-06-10 18:06:34 -07:00
http.c Merge branch 'cs/http-use-basic-after-failed-negotiate' 2021-03-30 14:35:37 -07:00
http.h http: allow custom index-pack args 2021-02-22 12:07:40 -08:00
ident.c Merge branch 'pw/rebase-i-more-options' 2020-09-03 12:37:01 -07:00
imap-send.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
INSTALL INSTALL: note on using Asciidoctor to build doc 2021-03-19 10:49:20 -07:00
iterator.h
json-writer.c
json-writer.h
khash.h
kwset.c
kwset.h
levenshtein.c
levenshtein.h
LGPL-2.1
line-log.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
line-log.h
line-range.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
line-range.h
linear-assignment.c
linear-assignment.h
list-objects-filter-options.c list-objects-filter-options: fix function name in BUG 2020-11-16 14:28:25 -08:00
list-objects-filter-options.h list_objects_filter_options: introduce 'list_object_filter_config_name' 2020-08-03 18:03:24 -07:00
list-objects-filter.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
list-objects-filter.h
list-objects.c
list-objects.h
list.h
ll-merge.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
ll-merge.h
lockfile.c
lockfile.h
log-tree.c format-patch: allow a non-integral version numbers 2021-03-23 12:49:47 -07:00
log-tree.h format-patch: make output filename configurable 2020-11-09 17:44:41 -08:00
ls-refs.c Merge branch 'jt/clone-unborn-head' 2021-02-17 17:21:40 -08:00
ls-refs.h ls-refs: report unborn targets of symrefs 2021-02-05 13:49:53 -08:00
mailinfo.c
mailinfo.h
mailmap.c Merge branch 'jk/open-dotgitx-with-nofollow' 2021-03-22 14:00:22 -07:00
mailmap.h shortlog: remove unused(?) "repo-abbrev" feature 2021-01-12 14:04:42 -08:00
Makefile Merge branch 'ab/make-tags-quiet' 2021-04-08 13:23:26 -07:00
match-trees.c
mem-pool.c mem-pool: drop trailing semicolon from macro definition 2021-03-17 10:20:16 -07:00
mem-pool.h mem-pool: use consistent pool variable name 2020-08-18 12:16:08 -07:00
merge-blobs.c
merge-blobs.h
merge-ort-wrappers.c merge-ort-wrappers: new convience wrappers to mimic the old merge API 2020-10-26 22:36:14 -07:00
merge-ort-wrappers.h merge-ort-wrappers: new convience wrappers to mimic the old merge API 2020-10-26 22:36:14 -07:00
merge-ort.c Merge branch 'en/ort-perf-batch-9' 2021-04-08 13:23:26 -07:00
merge-ort.h merge-ort: implement merge_incore_recursive() 2020-12-16 21:56:39 -08:00
merge-recursive.c Merge branch 'ab/read-tree' 2021-03-30 14:35:37 -07:00
merge-recursive.h merge-recursive: fix unclear and outright wrong comments 2020-08-02 11:03:57 -07:00
merge.c dir: fix problematic API to avoid memory leaks 2020-08-18 17:17:31 -07:00
mergesort.c
mergesort.h
midx.c Merge branch 'tb/reverse-midx' 2021-04-08 13:23:25 -07:00
midx.h pack-revindex: write multi-pack reverse indexes 2021-04-01 13:07:37 -07:00
name-hash.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
notes-cache.c
notes-cache.h
notes-merge.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
notes-merge.h
notes-utils.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
notes-utils.h
notes.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
notes.h
object-file.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
object-name.c object-name.c: rename from sha1-name.c 2021-01-04 13:01:55 -08:00
object-store.h packfile: add kept-pack cache for find_kept_pack_entry() 2021-02-22 23:30:52 -08:00
object.c lookup_unknown_object(): take a repository argument 2021-04-13 13:18:46 -07:00
object.h lookup_unknown_object(): take a repository argument 2021-04-13 13:18:46 -07:00
oid-array.c oid_pos(): access table through const pointers 2021-01-28 12:03:26 -08:00
oid-array.h oid-array: provide a for-loop iterator 2020-12-07 12:32:04 -08:00
oidmap.c hashmap: provide deallocation function names 2020-11-02 12:15:50 -08:00
oidmap.h
oidset.c blame: silently ignore invalid ignore file objects 2020-11-10 13:05:06 -08:00
oidset.h blame: validate and peel the object names on the ignore list 2020-09-24 22:20:58 -07:00
pack-bitmap-write.c oid_pos(): access table through const pointers 2021-01-28 12:03:26 -08:00
pack-bitmap.c Merge branch 'ps/pack-bitmap-optim' 2021-04-07 16:54:09 -07:00
pack-bitmap.h rev-list: add --disk-usage option for calculating disk usage 2021-02-11 09:57:55 -08:00
pack-check.c fsck: correctly compute checksums on idx files larger than 4GB 2020-11-16 13:41:35 -08:00
pack-objects.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
pack-objects.h
pack-revindex.c Merge branch 'tb/reverse-midx' 2021-04-08 13:23:25 -07:00
pack-revindex.h pack-revindex: read multi-pack reverse indexes 2021-04-01 13:07:37 -07:00
pack-write.c Merge branch 'tb/reverse-midx' 2021-04-08 13:23:25 -07:00
pack.h Merge branch 'tb/reverse-midx' 2021-04-08 13:23:25 -07:00
packfile.c is_promisor_object(): fix use-after-free of tree buffer 2022-08-14 18:03:36 -07:00
packfile.h packfile: introduce 'find_kept_pack_entry()' 2021-02-22 23:30:52 -08:00
pager.c pager: refactor wait_for_pager() function 2021-02-01 21:15:58 -08:00
parse-options-cb.c assert PARSE_OPT_NONEG in parse-options callbacks 2020-09-30 12:53:47 -07:00
parse-options.c parse-options: don't leak alias help messages 2021-03-21 14:39:10 -07:00
parse-options.h parse-options: don't leak alias help messages 2021-03-21 14:39:10 -07:00
patch-delta.c
patch-ids.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
patch-ids.h patch-ids: handle duplicate hashmap entries 2021-01-12 11:13:32 -08:00
path.c sequencer: treat REVERT_HEAD as a pseudo ref 2020-08-21 11:20:11 -07:00
path.h sequencer: treat REVERT_HEAD as a pseudo ref 2020-08-21 11:20:11 -07:00
pathspec.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
pathspec.h
pkt-line.c pkt-line: add options argument to read_packetized_to_strbuf() 2021-03-15 14:32:50 -07:00
pkt-line.h pkt-line: add options argument to read_packetized_to_strbuf() 2021-03-15 14:32:50 -07:00
preload-index.c preload-index: log the number of lstat calls to trace2 2021-02-16 17:14:34 -08:00
pretty.c Merge branch 'rs/pretty-describe' 2021-03-22 14:00:24 -07:00
pretty.h Merge branch 'rs/pretty-describe' 2021-03-22 14:00:24 -07:00
prio-queue.c
prio-queue.h
progress.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
progress.h
promisor-remote.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
promisor-remote.h promisor-remote: remove unused variable 2020-09-21 22:32:49 -07:00
prompt.c
prompt.h
protocol.c protocol: re-enable v2 protocol by default 2020-09-25 11:40:42 -07:00
protocol.h
prune-packed.c
prune-packed.h
quote.c quote: make sq_dequote_step() a public function 2021-01-12 12:03:18 -08:00
quote.h quote: make sq_dequote_step() a public function 2021-01-12 12:03:18 -08:00
range-diff.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
range-diff.h Merge branch 'js/range-diff-one-side-only' 2021-02-17 17:21:41 -08:00
reachable.c
reachable.h
read-cache.c Merge branch 'rs/calloc-array' 2021-03-19 15:25:38 -07:00
README.md
rebase-interactive.c rebase -i: clarify and fix 'fixup -c' rebase-todo help 2021-02-10 13:58:19 -08:00
rebase-interactive.h
rebase.c
rebase.h
ref-filter.c Merge branch 'rs/xcalloc-takes-nelem-first' 2021-03-19 15:25:39 -07:00
ref-filter.h branch: sort detached HEAD based on a flag 2021-01-07 15:13:21 -08:00
reflog-walk.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
reflog-walk.h
refs.c lookup_unknown_object(): take a repository argument 2021-04-13 13:18:46 -07:00
refs.h Merge branch 'tb/ls-refs-optim' 2021-02-05 16:40:45 -08:00
refspec.c Merge branch 'fc/atmark-in-refspec' 2020-12-14 10:21:36 -08:00
refspec.h Merge branch 'sb/clone-origin' 2020-10-27 15:09:50 -07:00
RelNotes Git 2.31.1 2021-03-26 14:49:41 -07:00
remote-curl.c push: parse and set flag for "--force-if-includes" 2020-10-03 09:59:19 -07:00
remote.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
remote.h Merge branch 'jt/clone-unborn-head' 2021-02-17 17:21:40 -08:00
replace-object.c replace-object: make replace operations thread-safe 2020-01-17 13:52:14 -08:00
replace-object.h
repo-settings.c Merge branch 'ds/maintenance-part-2' 2020-10-27 15:09:47 -07:00
repository.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
repository.h Merge branch 'ds/maintenance-part-2' 2020-10-27 15:09:47 -07:00
rerere.c rerere: use strmap to store rerere directories 2021-01-28 11:26:20 -08:00
rerere.h
reset.c
reset.h
resolve-undo.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
resolve-undo.h
revision.c revision: avoid parsing with --exclude-promisor-objects 2021-04-13 13:22:37 -07:00
revision.h Merge branch 'zh/format-patch-fractional-reroll-count' 2021-04-02 14:43:14 -07:00
run-command.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
run-command.h run-command: document use_shell option 2021-01-22 14:21:32 -08:00
SECURITY.md SECURITY: describe how to report vulnerabilities 2021-03-27 15:13:02 -07:00
send-pack.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
send-pack.h
sequencer.c Merge branch 'en/sequencer-edit-upon-conflict-fix' 2021-04-08 13:23:26 -07:00
sequencer.h sequencer: fix edit handling for cherry-pick and revert messages 2021-03-31 14:10:50 -07:00
serve.c ls-refs: report unborn targets of symrefs 2021-02-05 13:49:53 -08:00
serve.h argv-array: rename to strvec 2020-07-28 15:02:17 -07:00
server-info.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
setup.c Merge branch 'bc/sha-256-part-3' 2020-08-11 18:04:11 -07:00
sh-i18n--envsubst.c
sha1dc_git.c
sha1dc_git.h sha1dc_git.h: re-arrange an ifdef chain for a subsequent change 2017-12-08 15:01:01 -08:00
shallow.c commit_graft_pos(): take an oid instead of a bare hash 2021-01-28 11:21:07 -08:00
shallow.h
shell.c
shortlog.h shortlog: remove unused(?) "repo-abbrev" feature 2021-01-12 14:04:42 -08:00
sideband.c Merge branch 'jk/sideband-more-error-checking' 2020-11-09 14:06:29 -08:00
sideband.h sideband: diagnose more sideband anomalies 2020-10-29 09:23:29 -07:00
sigchain.c
sigchain.h
simple-ipc.h simple-ipc: add Unix domain socket implementation 2021-03-22 11:52:54 -07:00
split-index.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
split-index.h
stable-qsort.c
strbuf.c Merge branch 'rs/retire-strbuf-write-fd' 2020-06-29 14:17:26 -07:00
strbuf.h Merge branch 'rs/retire-strbuf-write-fd' 2020-06-29 14:17:26 -07:00
streaming.c
streaming.h
string-list.c
string-list.h
strmap.c strmap: take advantage of FLEXPTR_ALLOC_STR when relevant 2020-11-11 12:55:27 -08:00
strmap.h strmap: make callers of strmap_remove() to call it in void context 2020-12-15 15:30:44 -08:00
strvec.c strvec: rename struct fields 2020-07-30 19:18:06 -07:00
strvec.h strvec: rename struct fields 2020-07-30 19:18:06 -07:00
sub-process.c strvec: convert remaining callers away from argv_array name 2020-07-28 15:02:18 -07:00
sub-process.h
submodule-config.c hashmap: provide deallocation function names 2020-11-02 12:15:50 -08:00
submodule-config.h
submodule.c Merge branch 'sj/untracked-files-in-submodule-directory-is-not-dirty' 2021-01-25 14:19:18 -08:00
submodule.h submodule: rename helper functions to avoid ambiguity 2020-08-12 14:12:58 -07:00
symlinks.c checkout: don't follow symlinks when removing entries 2021-03-18 12:58:10 -07:00
tag.c gpg-interface: improve interface for parsing tags 2021-02-10 23:35:42 -08:00
tag.h
tar.h
tempfile.c
tempfile.h
thread-utils.c
thread-utils.h
tmp-objdir.c packfile: prepare for the existence of '*.rev' files 2021-01-25 18:32:43 -08:00
tmp-objdir.h
trace2.c trace2: add a public function for getting the SID 2020-11-11 18:26:52 -08:00
trace2.h trace2: add a public function for getting the SID 2020-11-11 18:26:52 -08:00
trace.c
trace.h
trailer.c Merge branch 'rs/xcalloc-takes-nelem-first' 2021-03-19 15:25:39 -07:00
trailer.h pretty format %(trailers): add a "key_value_separator" 2020-12-09 14:16:42 -08:00
transport-helper.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
transport-internal.h connect, transport: encapsulate arg in struct 2021-02-05 13:49:54 -08:00
transport.c Merge branch 'll/clone-reject-shallow' 2021-04-08 13:23:25 -07:00
transport.h builtin/clone.c: add --reject-shallow option 2021-04-01 12:58:58 -07:00
tree-diff.c bloom/diff: properly short-circuit on max_changes 2020-09-17 09:31:25 -07:00
tree-walk.c tree-walk: report recursion counts 2021-01-04 15:23:08 -08:00
tree-walk.h
tree.c tree.h API: simplify read_tree_recursive() signature 2021-03-20 16:09:26 -07:00
tree.h tree.h API: simplify read_tree_recursive() signature 2021-03-20 16:09:26 -07:00
unicode-width.h
unimplemented.sh
unix-socket.c unix-socket: disallow chdir() when creating unix domain sockets 2021-03-15 14:32:51 -07:00
unix-socket.h unix-socket: disallow chdir() when creating unix domain sockets 2021-03-15 14:32:51 -07:00
unix-stream-server.c unix-stream-server: create unix domain socket under lock 2021-03-15 14:32:51 -07:00
unix-stream-server.h unix-stream-server: create unix domain socket under lock 2021-03-15 14:32:51 -07:00
unpack-trees.c Merge branch 'mt/parallel-checkout-part-1' 2021-04-02 14:43:14 -07:00
unpack-trees.h stash show: teach --include-untracked and --only-untracked 2021-03-05 14:31:26 -08:00
upload-pack.c lookup_unknown_object(): take a repository argument 2021-04-13 13:18:46 -07:00
upload-pack.h argv-array: rename to strvec 2020-07-28 15:02:17 -07:00
url.c
url.h
urlmatch.c
urlmatch.h
usage.c usage: trace2 BUG() invocations 2021-02-09 14:14:34 -08:00
userdiff.c Merge branch 've/userdiff-bash' 2020-11-02 13:17:46 -08:00
userdiff.h
utf8.c
utf8.h
varint.c
varint.h
version.c
version.h
versioncmp.c
walker.c lookup_unknown_object(): take a repository argument 2021-04-13 13:18:46 -07:00
walker.h
wildmatch.c
wildmatch.h
worktree.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
worktree.h worktree: teach worktree to lazy-load "prunable" reason 2021-01-30 09:57:16 -08:00
wrap-for-bin.sh
wrapper.c add open_nofollow() helper 2021-02-16 09:41:32 -08:00
write-or-die.c
ws.c
wt-status.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
wt-status.h branch: sort detached HEAD based on a flag 2021-01-07 15:13:21 -08:00
xdiff-interface.c
xdiff-interface.h
zlib.c

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). 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://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