Without this patch, an added file would be reported as /dev/null.
Noticed by David Kastrup.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
There is no restriction on the length of the name returned by
get_object_directory, other than the fact that it must be a stat'able
git object directory. That means its name may have length up to
PATH_MAX-1 (i.e., often 4095) not counting the trailing NUL.
Combine that with the assumption that the concatenation of that name and
suffixes like "/info/alternates" and "/pack/---long-name---.idx" will fit
in a buffer of length PATH_MAX, and you see the problem. Here's a fix:
sha1_file.c (prepare_packed_git_one): Lengthen "path" buffer
so we are guaranteed to be able to append "/pack/" without checking.
Skip any directory entry that is too long to be appended.
(read_info_alternates): Protect against a similar buffer overrun.
Before this change, using the following admittedly contrived environment
setting would cause many git commands to clobber their stack and segfault
on a system with PATH_MAX == 4096:
t=$(perl -e '$s=".git/objects";$n=(4096-6-length($s))/2;print "./"x$n . $s')
export GIT_ALTERNATE_OBJECT_DIRECTORIES=$t
touch g
./git-update-index --add g
If you run the above commands, you'll soon notice that many
git commands now segfault, so you'll want to do this:
unset GIT_ALTERNATE_OBJECT_DIRECTORIES
Signed-off-by: Jim Meyering <jim@meyering.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
I ran git-prune on a repository and got this:
$ git-prune
error: Object 228f8065b930120e35fc0c154c237487ab02d64a is a blob, not a commit
Segmentation fault (core dumped)
This repository was a strange one in that it was being used to provide
its own submodule. That is, the repository was cloned into a
subdirectory, an independent branch checked out in that subdirectory,
and then it was marked as a submodule. git-prune then failed in the
above manner.
The problem was that git-prune was not submodule aware in two areas.
Linus said:
> So what happens is that something traverses a tree object, looks at each
> entry, sees that it's not a tree, and tries to look it up as a blob. But
> subprojects are commits, not blobs, and then when you look at the object
> more closely, you get the above kind of object type confusion.
and included a patch to add an S_ISGITLINK() test to reachable.c's
process_tree() function. That fixed the first git-prune error, and
stopped it from trying to process the gitlink entries in trees as if
they were pointers to other trees (and of course failing, because
gitlinks _aren't_ trees). That part of this patch is his.
The second area is add_cache_refs(). This is called before starting the
reachability analysis, and was calling lookup_blob() on every object
hash found in the index. However, it is no longer true that every hash
in the index is a pointer to a blob, some of them are gitlinks, and are
not backed by any object at all, they are commits in another repository.
Normally this bug was not causing any problems, but in the case of the
self-referencing repository described above, it meant that the gitlink
hash was being marked as being of type OBJ_BLOB by add_cache_refs() call
to lookup_blob(). Then later, because that hash was also pointed to by
a ref, add_one_ref() would treat it as a commit; lookup_commit() would
return a NULL because that object was already noted as being an
OBJ_BLOB, not an OBJ_COMMIT; and parse_commit_buffer() would SEGFAULT on
that NULL pointer.
The fix made by this patch is to not blindly call lookup_blob() in
reachable.c's add_cache_refs(), and instead skip any index entries that
are S_ISGITLINK().
Signed-off-by: Andy Parkins <andyparkins@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The 'show' and 'prune' commands accept an option '-n'; document what
it does.
Signed-off-by: Sam Vilain <sam.vilain@catalyst.net.nz>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Some minor enhancements to the git-repack manual page.
Signed-off-by: Sam Vilain <sam.vilain@catalyst.net.nz>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* 'maint' of git://repo.or.cz/git-gui:
git-gui: Don't require a .pvcsrc to create Tools/Migrate menu hack
git-gui: Don't nice git blame on MSYS as nice is not supported
git-gui: Don't require $DISPLAY just to get --version
git-gui: Bind Tab/Shift-Tab to cycle between panes in blame
git-gui: Correctly install to /usr/bin on Cygwin
The Tools/Migrate menu option is a hack just for me. Yes, that's
right, git-gui has a hidden feature that really only works for me,
and the users that I support within my day-job's great firewall.
The menu option is not supported outside of that environment.
In the past we only enabled Tools/Migrate if our special local
script 'gui-miga' existed in the proper location, and if there
was a special '.pvcsrc' in the top level of the working directory.
This latter test for the '.pvcsrc' file is now failing, as the file
was removed from all Git repositories due to changes made to other
tooling within the great firewall's realm.
I have changed the test to only work on Cygwin, and only if the
special 'gui-miga' is present. This works around the configuration
changes made recently within the great firewall's realm, but really
this entire Tools/Migrate thing should be abstracted out into some
sort of plugin system so other users can extend git-gui as they need.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Johannes Sixt reported that MinGW/MSYS does not have a nice.exe to
drop the priority of a child process when it gets spawned. So we
have to avoid trying to start `git blame` through nice when we are
on Windows and do not have Cygwin available to us.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Print no space after the name of a key without value.
Otherwise keys without values are printed exactly the
same as keys with empty values.
Signed-off-by: Frank Lichtenheld <frank@lichtenheld.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The asciidoc documentation of the --get-regexp option was
incomplete. Add some missing pieces:
- List the option in SYNOPSIS
- Mention that key names are printed
Signed-off-by: Frank Lichtenheld <frank@lichtenheld.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add a picture, and keep the setup and the tests together.
Signed-off-by: Sam Vilain <sam.vilain@catalyst.net.nz>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
A pack-file can get created without any objects in it (to transfer "no
data" - which can happen if you use a reference git repo, for example,
or just otherwise just end up transferring only branch head information
and already have all the objects themselves).
And while we probably should never create an index for such a pack, if we
do (and we do), the index file size sanity checking was incorrect.
This fixes it.
Reported-and-tested-by: Jocke Tjernlund <tjernlund@tjernlund.se>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Without this patch, the code would look for the submodule
commits in the superproject and (needlessly) fail when it
couldn't find them.
Signed-off-by: Sven Verdoolaege <skimo@liacs.nl>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Junio asked that we don't force the user to have a valid X11 server
configured in $DISPLAY just to obtain the output of `git gui version`.
This makes sense, the user may be an automated tool that is running
without an X server available to it, such as a build script or other
sort of package management system. Or it might just be a user working
in a non-GUI environment and wondering "what version of git-gui do I
have installed?".
Tcl has a lot of warts, but one of its better ones is that a comment
can be continued to the next line by escaping the LF that would have
ended the comment using a backslash-LF sequence. In the past we have
used this trick to escape away the 'exec wish' that is actually a Bourne
shell script and keep Tcl from executing it.
I'm using that feature here to comment out the Bourne shell script and
hide it from the Tcl engine. Except now our Bourne shell script is a
few lines long and checks to see if it should print the version, or not.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
The blame viewer is composed of two different areas, the file
area on top and the commit area on the bottom. If users are
trying to shift the focus it is probably because they want to
shift from one area to the other, so we just setup Tab and
Shift-Tab to jump from the one half to the other in a cycle.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Mark Levedahl <mlevedahl@gmail.com> noted that installation on Cygwin
to /usr/bin can cause problems with the automatic guessing of our
library location. The problem is that installation to /usr/bin
means we actually have:
/usr/bin = c:\cygwin\bin
/usr/share = c:\cygwin\usr\share
So git-gui guesses that its library should be found within the
c:\cygwin\share directory, as that is where it should be relative
to the script itself in c:\cygwin\bin.
In my first version of this patch I tried to use `cygpath` to resolve
/usr/bin and /usr/share to test that they were in the same relative
locations, but that didn't work out correctly as we were actually
testing /usr/share against itself, so it always was equal, and we
always used relative paths. So my original solution was quite wrong.
Mark suggested we just always disable relative behavior on Cygwin,
because of the complexity of the mount mapping problem, so that's
all I'm doing.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
It turns out that the attribute definition we have had for a
long time to hide "^" character from AsciiDoc 7 was not honored
by AsciiDoc 8 even under "-a asciidoc7compatible" mode. There is
a similar breakage with the "compatible" mode with + characters.
The double colon at the end of definition list term needs
to be attached to the term, without a whitespace. After this
minimum fixups, AsciiDoc 8 (I used 8.2.1 on Debian) with
compatibility mode seems to produce reasonably good results.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Johannes and Marco discovered that "git log -z" spent cycles in diff even
though there is no need to actually compute diffs.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The original code did not take hierarchical branch names into account at all.
[jc: cherry-picked 11f68d9 from 'master']
Tested-by: Gerrit Pape <pape@smarden.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
$EMAIL is a system-wide setup that is used for many many many
applications. If the git user chose a specific user.email setup,
then _this_ should be honoured rather than $EMAIL.
[jc: cherry-picked ec563e8 from 'master']
Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
[jc: cherry-picked 9f30855 from 'master']
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We already have two instances where we want to determine if a buffer
contains binary data as opposed to text.
[jc: cherry-picked 6bfce93e from 'master']
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The function converts the value of h_errno (last error of name
resolver library, see netdb.h).
One of systems which supposedly do not have the function is SunOS.
POSIX does not mandate its presence.
Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This makes --suppress-from actually work when you're unfortunate enough
to have non-ASCII in your name. Also, if there's a match use the optionally
RFC2047 quoted version from the email.
Signed-off-by: Kristian Høgsberg <krh@redhat.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* 'maint' of git://repo.or.cz/git-gui:
git-gui: Save geometry before the window layout is damaged
git-gui: Give amend precedence to HEAD over MERGE_MSG
git-gui: Include 'war on whitespace' fixes from git.git
Because Tk does not assure us the order that it will process
children in before it destroys the main toplevel we cannot safely
save our geometry data during a "bind . <Destroy>" event binding.
The geometry may have already changed as a result of a one or
more children being removed from the layout. This was pointed
out in gitk by Mark Levedahl, and patched over there by commit
b6047c5a81.
So we now also use "wm protocol . WM_DELETE_WINDOW" to detect when
the window is closed by the user, and forward that close event to
our main do_quit routine.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Apparently git-commit.sh (the command line commit user interface in
core Git) always gives precedence to the prior commit's message if
`commit --amend` is used and a $GIT_DIR/MERGE_MSG file also exists.
We actually were doing the same here in git-gui, but the amended
message got lost if $GIT_DIR/MERGE_MSG already existed because
we started a rescan immediately after loading the prior commit's
body into the edit buffer. When that happened the rescan found
MERGE_MSG existed and replaced the commit message buffer with the
contents of that file. This meant the user never saw us pick up
the commit message of the prior commit we are about to replace.
Johannes Sixt <J.Sixt@eudaptics.com> found this bug in git-gui by
running `git cherry-pick -n $someid` and then trying to amend the
prior commit in git-gui, thus combining the contents of $someid
with the contents of HEAD, and reusing the commit message of HEAD,
not $someid. With the recent changes to make cherry-pick use the
$GIT_DIR/MERGE_MSG file Johannes saw git-gui pick up the message
of $someid, not HEAD. Now we always use HEAD if we are amending.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Earlier git.git applied a large "war on whitespace" patch that was
created using 'apply --whitespace=strip'. Unfortunately a few of
git-gui's own files got caught in the mix and were also cleaned up.
That was a6080a0a44.
This patch is needed in git-gui.git to reapply those exact same
changes here, otherwise our version generator script is unable to
obtain our version number from git-describe when we are hosted in
the git.git repository.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
* 'maint' of git://repo.or.cz/git-gui: (46 commits)
git-gui: Changed blame header bar background to match main window
git-gui: Favor the original annotations over the recent ones
git-gui: Improve our labeling of blame annotation types
git-gui: Use three colors for the blame viewer background
git-gui: Jump to original line in blame viewer
git-gui: Display both commits in our tooltips
git-gui: Run blame twice on the same file and display both outputs
git-gui: Display the "Loading annotation..." message in italic
git-gui: Rename fields in blame viewer to better descriptions
git-gui: Label the uncommitted blame history entry
git-gui: Switch internal blame structure to Tcl lists
git-gui: Cleanup redundant column management in blame viewer
git-gui: Better document our blame variables
git-gui: Remove unused commit_list from blame viewer
git-gui: Automatically expand the line number column as needed
git-gui: Make the line number column slightly wider in blame
git-gui: Use lighter colors in blame view
git-gui: Remove unnecessary space between columns in blame viewer
git-gui: Remove the loaded column from the blame viewer
git-gui: Clip the commit summaries in the blame history menu
...
The word "changelog" seems a little too much like jargon to me, and beginners
must understand section headers so they know where to look for help.
Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu>
In Documentation/user-manual.txt the example
$ git checkout --track -b origin/maint maint
under "Getting updates with git pull", should read
$ git checkout --track -b maint origin/maint
This was noticed by Ron, and reported through
http://bugs.debian.org/427502
Signed-off-by: Gerrit Pape <pape@smarden.org>
Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu>
Update text to reflect new position in appendix.
Update the name to reflect the fact that this is closer to reference
than tutorial documentation (as suggested by Jonas Fonseca).
Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu>
In several of the text messages, the tense of the verb is inconsistent.
For example, "Add" vs "Creates". It is customary to use imperative for
command description.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Although it is not advisable, we have always allowed a branch
and a tag to have the same basename (i.e. it is not illegal to
have refs/heads/frotz and refs/tags/frotz at the same time).
When talking about a specific commit, the interpretation of
'frotz' has always been "use tag and then check branch",
although we warn when ambiguities exist.
However "git checkout $name" is defined to (1) first see if it
matches the branch name, and if so switch to that branch; (2)
otherwise it is an instruction to detach HEAD to point at the
commit named by $name. We did not follow this definition when
$name appeared under both refs/heads/ and refs/tags/ -- we
switched to the branch but read the tree from the tagged commit,
which was utterly bogus.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The main window's diff header bar background switched from orange
to gold recently, and I liked the effect it had on readability of
the text. Since I wanted the blame viewer to match, here it is.
Though this probably should be a user defined color, or at least
a constant somewhere that everyone can reference.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
The problem is visible when cloning a local repo. The cloned
repository will have the origin url setup incorrectly: the origin name
will be copied verbatim in origin url of the cloned repository.
Normally, the name is to be expanded into absolute path.
Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When scanning the trees in track_tree_refs() there is a "lazy" test
that assumes that entries are either directories or files. Don't do
that.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
CVS import was failing on a couple repos I was trying to import.
I was setting GIT_DIR=newproj.git and using the -i flag, but this bug
was thwarting the effort... evil CVS.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
unpack-objects -n didn't print the object list as promised on the
manual page, so alter the documentation to reflect the behaviour
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Tests with git-filter-branch on a repository that was converted from
CVS and that has commits reaching back to 1999 revealed that it is
necessary to parse dates before 2000/01/01 when they are specified
as seconds since 1970/01/01. There is now still a limit, 100000000,
which is 1973/03/03 09:46:40 UTC, in order to allow that dates are
represented as 8 digits.
Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
