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Taylor Blau 0bd52e27e3 commit-graph.h: store an odb in 'struct write_commit_graph_context'
There are lots of places in 'commit-graph.h' where a function either has
(or almost has) a full 'struct object_directory *', accesses '->path',
and then throws away the rest of the struct.

This can cause headaches when comparing the locations of object
directories across alternates (e.g., in the case of deciding if two
commit-graph layers can be merged). These paths are normalized with
'normalize_path_copy()' which mitigates some comparison issues, but not
all [1].

Replace usage of 'char *object_dir' with 'odb->path' by storing a
'struct object_directory *' in the 'write_commit_graph_context'
structure. This is an intermediate step towards getting rid of all path
normalization in 'commit-graph.c'.

Resolving a user-provided '--object-dir' argument now requires that we
compare it to the known alternates for equality.  Prior to this patch,
an unknown '--object-dir' argument would silently exit with status zero.

This can clearly lead to unintended behavior, such as verifying
commit-graphs that aren't in a repository's own object store (or one of
its alternates), or causing a typo to mask a legitimate commit-graph
verification failure. Make this error non-silent by 'die()'-ing when the
given '--object-dir' does not match any known alternate object store.

[1]: In my testing, for example, I can get one side of the commit-graph
code to fill object_dir with "./objects" and the other with just
"objects".

Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-04 11:36:37 -08:00
.github
Documentation commit-graph.h: store an odb in 'struct write_commit_graph_context' 2020-02-04 11:36:37 -08:00
block-sha1
builtin commit-graph.h: store an odb in 'struct write_commit_graph_context' 2020-02-04 11:36:37 -08:00
ci Merge branch 'sg/osx-force-gcc-9' 2019-12-06 15:09:21 -08:00
compat Merge branch 'js/mingw-reserved-filenames' 2020-01-02 12:38:30 -08:00
contrib Merge branch 'dl/pretty-reference' 2019-12-10 13:11:43 -08:00
ewah
git-gui Merge https://github.com/prati0100/git-gui 2020-01-08 11:18:06 -08:00
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sha1dc Merge branch 'jk/lore-is-the-archive' 2019-12-06 15:09:23 -08:00
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INSTALL Merge branch 'ar/install-doc-update-cmds-needing-the-shell' 2019-12-01 09:04:41 -08:00
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Makefile Merge branch 'js/add-p-in-c' 2019-12-25 11:22:01 -08:00
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add-patch.c built-in add -p: show helpful hint when nothing can be staged 2019-12-13 12:37:14 -08:00
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command-list.txt Merge branch 'ds/sparse-cone' 2019-12-25 11:21:58 -08:00
commit-graph.c commit-graph.h: store an odb in 'struct write_commit_graph_context' 2020-02-04 11:36:37 -08:00
commit-graph.h commit-graph.h: store an odb in 'struct write_commit_graph_context' 2020-02-04 11:36:37 -08:00
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object-store.h packfile.c: speed up loading lots of packfiles 2019-12-03 07:59:45 -08:00
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serve.c
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server-info.c
setup.c
sh-i18n--envsubst.c
sha1-array.c
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sha1-file.c
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shell.c
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stable-qsort.c
strbuf.c strbuf: add a helper function to call the editor "on an strbuf" 2019-12-13 12:37:14 -08:00
strbuf.h strbuf: add a helper function to call the editor "on an strbuf" 2019-12-13 12:37:14 -08:00
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worktree.c
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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