The loop in get_size_from_delta() feeds a deflated delta data from the
pack stream _until_ we get inflated result of 20 bytes[*] or we reach the
end of stream.
Side note. This magic number 20 does not have anything to do with the
size of the hash we use, but comes from 1a3b55c (reduce delta head
inflated size, 2006-10-18).
The loop reads like this:
do {
in = use_pack();
stream.next_in = in;
st = git_inflate(&stream, Z_FINISH);
curpos += stream.next_in - in;
} while ((st == Z_OK || st == Z_BUF_ERROR) &&
stream.total_out < sizeof(delta_head));
This git_inflate() can return:
- Z_STREAM_END, if use_pack() fed it enough input and the delta itself
was smaller than 20 bytes;
- Z_OK, when some progress has been made;
- Z_BUF_ERROR, if no progress is possible, because we either ran out of
input (due to corrupt pack), or we ran out of output before we saw the
end of the stream.
The fix b3118bd (sha1_file: Fix infinite loop when pack is corrupted,
2009-10-14) attempted was against a corruption that appears to be a valid
stream that produces a result larger than the output buffer, but we are
not even trying to read the stream to the end in this loop. If avail_out
becomes zero, total_out will be the same as sizeof(delta_head) so the loop
will terminate without the "fix". There is no fix from b3118bd needed for
this loop, in other words.
The loop in unpack_compressed_entry() is quite a different story. It
feeds a deflated stream (either delta or base) and allows the stream to
produce output up to what we expect but no more.
do {
in = use_pack();
stream.next_in = in;
st = git_inflate(&stream, Z_FINISH);
curpos += stream.next_in - in;
} while (st == Z_OK || st == Z_BUF_ERROR)
This _does_ risk falling into an endless interation, as we can exhaust
avail_out if the length we expect is smaller than what the stream wants to
produce (due to pack corruption). In such a case, avail_out will become
zero and inflate() will return Z_BUF_ERROR, while avail_in may (or may
not) be zero.
But this is not a right fix:
do {
in = use_pack();
stream.next_in = in;
st = git_inflate(&stream, Z_FINISH);
+ if (st == Z_BUF_ERROR && (stream.avail_in || !stream.avail_out)
+ break; /* wants more input??? */
curpos += stream.next_in - in;
} while (st == Z_OK || st == Z_BUF_ERROR)
as Z_BUF_ERROR from inflate() may be telling us that avail_in has also run
out before reading the end of stream marker. In such a case, both avail_in
and avail_out would be zero, and the loop should iterate to allow the end
of stream marker to be seen by inflate from the input stream.
The right fix for this loop is likely to be to increment the initial
avail_out by one (we allocate one extra byte to terminate it with NUL
anyway, so there is no risk to overrun the buffer), and break out if we
see that avail_out has become zero, in order to detect that the stream
wants to produce more than what we expect. After the loop, we have a
check that exactly tests this condition:
if ((st != Z_STREAM_END) || stream.total_out != size) {
free(buffer);
return NULL;
}
So here is a patch (without my previous botched attempts) to fix this
issue. The first hunk reverts the corresponding hunk from b3118bd, and
the second hunk is the same fix proposed earlier.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This is convenient when parsing multiple the blame of multiple files,
for example:
git ls-files -z --exclude-standard -- "*.[ch]" |
xargs --null -n 1 git blame -p > output
and then analyzing the 'output' file using a seperate script.
Currently the parsing is difficult when not all files have a newline
at EOF, this patch ensures that even such files have a newline at the
end of the blame output.
Signed-off-by: Sverre Rabbelier <srabbelier@gmail.com>
CC: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add the missing definite article ("the") in several places.
Change "note to..." to "note for...", since "note to" means that
that the note is addressed to someone (source: Google search).
Change "progressbar" to "progress bar" (source: Wikipedia).
Format git commands, options, and file names consistently using
back quotes (i.e. a fixed font in the resulting HTML document).
Signed-off-by: Björn Gustavsson <bgustavsson@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Introduce two new configuration variables, receive.autogc (defaults to
true) and receive.updateserverinfo (defaults to false). When these are
set, receive-pack runs "gc --auto --quiet" and "update-server-info"
respectively after it finishes receiving data from "git push" and updating
refs.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Acked-by: Nicolas Pitre <nico@fluxnic.net>
When "gc --auto --quiet" decides there is something to do, it tells the
user what it is doing, as it is going to make the user wait for a bit.
But the message was a bit too long.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The "git pull" documentation has examples which follow an outdated
style. Update the examples to use "git merge" where appropriate and
move the examples to the corresponding manpages.
Furthermore,
- show that pull is equivalent to fetch and merge, which is still a
frequently asked question,
- explain the default fetch refspec.
Signed-off-by: Clemens Buchacher <drizzd@aon.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This enables gitk to show the patch text with correct glyphs if the locale
is not UTF-8.
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This mbox file must have been added by accident in e9fe804 (git-mailinfo:
Fix getting the subject from the in-body [PATCH] line, 2008-07-14).
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
One of the first things that cvsimport does is chdir to the
newly created git repo. This means that any filenames given
to us on the command line will be looked up relative to the
git repo directory. This is probably not what the user
expects, so let's remember and prepend the original
directory for relative filenames.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This replaces an earlier patch by Björn Gustavsson,
Message-ID: <4AD75029.1010109@gmail.com>
Signed-off-by: しらいし ななこ <nanako3@lavabit.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
'git push -h' shows usage text with incomplete list of options and then
has a separate list of options that are supported. Imitate the way other
commands (I looked at 'git diff' for an example) show their options.
Signed-off-by: しらいし ななこ <nanako3@lavabit.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
'make clean' should remove the object files from block-sha1/
instead of the non-existent mozilla-sha1/ directory.
Signed-off-by: Carlos R. Mafra <crmafra@aei.mpg.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git grep" would segfault if its -f option was used because it would
try to use an uninitialized strbuf, so initialize the strbuf.
Thanks to Johannes Sixt <j.sixt@viscovery.net> for the help with the
test cases.
Signed-off-by: Matt Kraai <kraai@ftbfs.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When creating an info/grafts under windows, one typically gets a CRLF file.
There is no good reason to forbid trailing CR at the end of the line (for
that matter, any trailing whitespaces); the code allowed only LF simply
because that was good enough for the platforms with LF line endings.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Some types of corruption to a pack may confuse the deflate stream
which stores an object. In Andy's reported case a 36 byte region
of the pack was overwritten, leading to what appeared to be a valid
deflate stream that was trying to produce a result larger than our
allocated output buffer could accept.
Z_BUF_ERROR is returned from inflate() if either the input buffer
needs more input bytes, or the output buffer has run out of space.
Previously we only considered the former case, as it meant we needed
to move the stream's input buffer to the next window in the pack.
We now abort the loop if inflate() returns Z_BUF_ERROR without
consuming the entire input buffer it was given, or has filled
the entire output buffer but has not yet returned Z_STREAM_END.
Either state is a clear indicator that this loop is not working
as expected, and should not continue.
This problem cannot occur with loose objects as we open the entire
loose object as a single buffer and treat Z_BUF_ERROR as an error.
Reported-by: Andy Isaacson <adi@hexapodia.org>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Acked-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Switch to MiB/s when the connection is fast enough (i.e. on a LAN).
Signed-off-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When we use -b <branch>, we may checkout something else than what the
remote's HEAD references, but we still used remote_head to supply the
new ref value to the post-checkout hook, which is wrong.
So instead of using remote_head to find the value to be passed to the
post-checkout hook, we have to use our_head_points_at, which is always
correctly setup, even if -b is not used.
This also fixes a segfault when "clone -b <branch>" is used with a
remote repo that doesn't have a valid HEAD, as in such a case
remote_head is NULL, but we still tried to access it.
Reported-by: Devin Cofer <ranguvar@archlinux.us>
Signed-off-by: Björn Steinbrink <B.Steinbrink@gmx.de>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The custom CGI escaping done in esc_param failed to escape UTF-8
properly. Fix by using CGI::escape on each sequence of matched
characters instead of sprintf()ing a custom escaping for each byte.
Additionally, the space -> + escape was being escaped due to greedy
matching on the first substitution. Fix by adding space to the
list of characters not handled on the first substitution.
Finally, remove an unnecessary escaping of the + sign.
Signed-off-by: Giuseppe Bilotta <giuseppe.bilotta@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
All programs, in particular also the stand-alone programs (non-builtins)
must call git_extract_argv0_path(argv[0]) in order to help builds that
derive the installation prefix at runtime, such as the MinGW build.
Without this call, the program segfaults (or raises an assertion
failure).
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Tested-by: Michael Wookey <michaelwookey@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Unless one already knew, it was not obvious what sort of shorthand
"git check-ref-format --branch" expands. Explain it.
The --branch argument is not optional.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In all parts of git, .gitignore and other exclude files
impact only how we treat untracked files; they should have
no effect on files listed in the index.
This behavior was originally implemented very early on in
9ff768e, but only for --exclude-from. Later, commit 63d285c
accidentally caused us to trigger the behavior for
--exclude-per-directory.
This patch totally ignores excludes for files found in the
index. This means we are reversing the original intent of
9ff768e, while at the same time fixing the accidental
behavior of 63d285c. This is a good thing, though, as the
way that 9ff768e behaved does not really make sense with the
way exclusions are used in modern git.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Make "git add -p" to not skip files that are in index even if they are
excluded (by .gitignore etc.). This fixes the contradictory behavior
that "git status" and "git commit -a" listed such files as modified, but
"git add -p FILENAME" ignored them.
Signed-off-by: Pauli Virtanen <pav@iki.fi>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When saying the initial branch is equal to the currently active
remote branch, it is probably intended that the branch heads
point to the same commit. Maybe it would be more useful to a
new user to emphasize that the tree contents and history are the
same.
More important, probably, is that this new branch is set up so
that "git pull" merges changes from the corresponding remote
branch. The next paragraph addresses that directly. What the
reader needs to know to begin with is that (1) the initial branch
is your own; if you do not pull, it won't get updated, and that
(2) the initial branch starts out at the same commit as the
upstream.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Some MTAs reject Cc: lines longer than 78 chars.
Avoid this by using the same join as "To:" ",\n\t"
so each subsequent Cc entry is on a new line.
RCPT TO: should have a single entry per line.
see: http://www.ietf.org/rfc/rfc2821.txt
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Björn Gustavsson <bgustavsson@gmail.com>
Acked-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Aliases with newlines have been a problem since commit 56fc25f (Bash
completion support for remotes in .git/config., 2006-11-05). The chance
of the problem occurring has been slim at best, until commit 518ef8f
(completion: Replace config --list with --get-regexp, 2009-09-11)
removed the case statement introduced by commit 56fc25f. Before removing
the case statement, most aliases with newlines would work unless they
were specially crafted as follows
[alias]
foo = "log -1 --pretty='format:%s\nalias.error=broken'"
After removing the case statement, a more benign alias like
[alias]
whowhat = "log -1 --pretty='format:%an <%ae>\n%s'"
wont-complete = ...
would cause the completion to break badly.
For now, revert the removal of the case statement until someone comes up
with a better way to get keys from git-config.
Signed-off-by: Stephen Boyd <bebarino@gmail.com>
Acked-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
After commit 511a3fc (wrap git's main usage string., 2009-09-12), the
bash completion for git commands includes COMMAND and [ARGS] when it
shouldn't. Fix this by grepping more strictly for a line with git
commands. It's doubtful whether git will ever have commands starting
with anything besides numbers and letters so this should be fine. At
least by being stricter we'll know when we break the completion earlier.
Signed-off-by: Stephen Boyd <bebarino@gmail.com>
Acked-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This fixes an obvious syntax error that snuck in commit 7e787953:
syntax error at /home/ingmar/bin//git-import-tars line 143, near "/^$/ { "
syntax error at /home/ingmar/bin//git-import-tars line 145, near "} else"
syntax error at /home/ingmar/bin//git-import-tars line 152, near "}"
Signed-off-by: Ingmar Vanhassel <ingmar@exherbo.org>
Acked-and-Tested-by: Peter Krefting <peter@softwolves.pp.se>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The 'patch' view is about generating text/plain patch that can be
given to "git am", and "git am" doesn't understand merges anyway.
Therefore link to 'patch' view should not be shown for merge commits.
Also call to git-format-patch inside the 'patch' action would fail
when 'patch' action is called for a merge commit, with "Reading
git-format-patch failed" text as 'patch' view body.
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Idealists may want USE_NSEC to be the default on Linux some day.
Point to a patch to better explain the requirements on
filesystem code for that to happen.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
It is not necessarily obvious to a git novice what it means for a
filesystem tree to be equal to the HEAD. Spell it out.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The documentation seems to assume that the starting point for a new
branch is the tip of an existing (ordinary) branch, but that is not
the most common case. More often, "git branch" is used to begin
a branch from a remote-tracking branch, a tag, or an interesting
commit (e.g. origin/pu^2). Clarify the language so it can apply
to these cases. Thanks to Sean Estabrooks for the wording.
Also add a pointer to the user's manual for the bewildered.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Update the documentation for --merged and --no-merged to explain
the meaning of the optional parameter introduced in commit 049716b
(branch --merged/--no-merged: allow specifying arbitrary commit,
2008-07-08).
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Sounds better this way, at least to my ears. ("The syntax and
supported options of git merge" is a plural noun. "the same"
instead of "equal" sounds less technical and seems to convey
the meaning better here.)
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The fmt-merge-message builtin can be invoked as "git fmt-merge-msg" rather
than through the hard link in GIT_EXEC_PATH. Although this is unlikely to
confuse most script writers, it should not hurt to make the documentation
a little clearer anyway.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
