Starting with commit c793430 (Limit file descriptors used by packs,
2011-02-28), git uses getrlimit to tell how many file descriptors it
can use. Unfortunately it does not include the header declaring that
function, resulting in compilation errors:
sha1_file.c: In function 'open_packed_git_1':
sha1_file.c:718: error: storage size of 'lim' isn't known
sha1_file.c:721: warning: implicit declaration of function 'getrlimit'
sha1_file.c:721: error: 'RLIMIT_NOFILE' undeclared (first use in this function)
sha1_file.c:718: warning: unused variable 'lim'
The standard header to include for this is <sys/resource.h> (which on
some systems itself requires declarations from <sys/types.h> or
<sys/time.h>). Probably the problem was missed until now because in
current glibc sys/resource.h happens to be included by sys/wait.h.
MinGW does not provide sys/resource.h (and compat/mingw takes care of
providing getrlimit some other way), so add the missing #include to
the "#ifndef __MINGW32__" block in git-compat-util.h.
Reported-by: Stefan Sperling <stsp@stsp.name> Tested-by: Stefan Sperling <stsp@stsp.name> [on OpenBSD] Tested-by: Arnaud Lacombe <lacombar@gmail.com> [on FreeBSD 8] Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Doc: mention --delta-base-offset is the default for Porcelain commands
The underlying pack-objects plumbing command still needs an explicit
option from the command line, but these days Porcelain passes the
option, so there is no need for end users to worry about it anymore.
docs: fix filter-branch subdir example for exotic repo names
The GIT_INDEX_FILE variable we get from git has the full
path to the repo, which may contain spaces. When we use it
in our shell snippet, it needs to be quoted.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
HOME must be set before calling git-init when creating test repositories
Otherwise the created test repositories will be affected by users ~/.gitconfig.
For example, setting core.logAllrefupdates in users config will make all
calls to "git config --unset core.logAllrefupdates" fail which will break
the first test which uses the statement and expects it to succeed.
Signed-off-by: Alex Riesen <raa.lkml@gmail.com> Acked-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
gitweb: Fix handling of fractional timezones in parse_date
Fractional timezones, like -0330 (NST used in Canada) or +0430
(Afghanistan, Iran DST), were not handled properly in parse_date; this
means values such as 'minute_local' and 'iso-tz' were not generated
correctly.
This was caused by two mistakes:
* sign of timezone was applied only to hour part of offset, and not
as it should be also to minutes part (this affected only negative
fractional timezones).
* 'int $h + $m/60' is 'int($h + $m/60)' and not 'int($h) + $m/60',
so fractional part was discarded altogether ($h is hours, $m is
minutes, which is always less than 60).
Note that positive fractional timezones +0430, +0530 and +1030 can be
found as authortime in git.git repository itself.
For example http://repo.or.cz/w/git.git/commit/88d50e7 had authortime
of "Fri, 8 Jan 2010 18:48:07 +0000 (23:48 +0530)", which is not marked
with 'atnight', when "git show 88d50e7" gives correct author date of
"Sat Jan 9 00:18:07 2010 +0530".
Signed-off-by: Jakub Narebski <jnareb@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
doc: technical details about the index file format
* Clarify "string of unsigned bytes";
* Blob has two variants (regular file vs symlink), not (blob vs symlink);
* Clarify permission mode bits;
* Clarify ce_namelen() "too long to fit in the length field" case;
* Clarify "." etc are forbidden as path components;
* Match the description with the internal wording "cache-tree";
* All types of extension begin with signature and length as explained in
the first part. Don't repeat the "length" part in the description of
each extension (can be mistaken as if there is a separate 32-bit size
field inside the extension), but state what the signature for each
extension is.
* Don't say "Extension tag", as we have said "Extension signature" in the
first part---be consistent;
* Clarify the invalidation of cache-tree entries;
* Correct description on subtree_nr field in the cache-tree;
git-am.txt: advertise 'git am --abort' instead of 'rm .git/rebase-apply'
'git am --abort' is around for quite a long time now, and users should
normally not poke around inside the .git directory, yet the
documentation of 'git am' still recommends the following:
... if you decide to start over from scratch,
run `rm -f -r .git/rebase-apply` ...
Suggest 'git am --abort' instead.
It's not quite the same as the original, because 'git am --abort' will
restore the original branch, while simply removing '.git/rebase-apply'
won't, but that's rather a thinko in the original wording, because
that won't actually "start over _from scratch_".
Signed-off-by: SZEDER Gábor <szeder@ira.uka.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
bisect: visualize with git-log if gitk is unavailable
If gitk is not available in the PATH, bisect ends up
exiting with the shell's 127 error code, confusing the git
wrapper into thinking that bisect is not a git command.
We already fallback to git-log if there doesn't seem to be a
graphical display available. We should do the same if gitk
is not available in our PATH at all. This not only fixes the
ugly error message, but is a much more sensible default than
failing to show the user anything.
Reported by Maxin John.
Tested-by: Maxin B. John <maxin@maxinbjohn.info> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* sp/maint-fd-limit:
sha1_file.c: Don't retain open fds on small packs
mingw: add minimum getrlimit() compatibility stub
Limit file descriptors used by packs
Merge branch 'so/submodule-no-update-first-time' into maint
* so/submodule-no-update-first-time:
t7406: "git submodule update {--merge|--rebase]" with new submodules
submodule: no [--merge|--rebase] when newly cloned
The test setup in t8006-blame-textconv.sh uses "ln -sf" to
overwrite an existing symlink. Unfortunately, both /usr/bin/ln
and /usr/xpg4/bin/ln on solaris 9 don't properly handle -f and -s
used at the same time. This caused the test setup and subsequent
checks to fail.
Instead, remove the symlink and then create a new one in the
setup code.
The upstream Solaris bug (fixed in 10, but not 9) is documented
here:
stash: copy the index using --index-output instead of cp -p
'git stash create' must operate with a temporary index. For this purpose,
it used 'cp -p' to create a copy. -p is needed to preserve the timestamp
of the index file. Now Jakob Pfender reported a certain combination of
a Linux NFS client, OpenBSD NFS server, and cp implementation where this
operation failed.
Luckily, the first operation in git-stash after copying the index is to
call 'git read-tree'. Therefore, use --index-output instead of 'cp -p'
to write the copy of the index.
--index-output requires that the specified file is on the same volume as
the source index, so that the lock file can be rename()d. For this reason,
the name of the temporary index is constructed in a way different from the
other temporary files. The code path of 'stash -p' also needs a temporary
index, but we do not use the new name because it does not depend on the
same precondition as --index-output.
Signed-off-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
stash: fix incorrect quoting in cleanup of temporary files
The * was inside the quotes, so that the pattern was never expanded and the
temporary files were never removed. As a consequence, 'stash -p' left a
.git-stash-*-patch file in $GIT_DIR. Other code paths did not leave files
behind because they removed the temporary file themselves, at least in
non-error paths.
Signed-off-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Merge branch 'lt/rename-no-extra-copy-detection' into maint
* lt/rename-no-extra-copy-detection:
diffcore-rename: improve estimate_similarity() heuristics
diffcore-rename: properly honor the difference between -M and -C
for_each_hash: allow passing a 'void *data' pointer to callback
Merge branch 'mg/placeholders-are-lowercase' into maint
* mg/placeholders-are-lowercase:
Make <identifier> lowercase in Documentation
Make <identifier> lowercase as per CodingGuidelines
Make <identifier> lowercase as per CodingGuidelines
Make <identifier> lowercase as per CodingGuidelines
CodingGuidelines: downcase placeholders in usage messages
I tried both Firefox and Opera and saw the same behavior.
The desired output is:
1 /*
2 * test
3 */
This can be accomplished by specifying "--replace-tabs=8" on the
highlight command line.
Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Acked-by: John 'Warthog9' Hawley <warthog9@eaglescrag.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --quiet: disable optimization when --diff-filter=X is used
The code notices that the caller does not want any detail of the changes
and only wants to know if there is a change or not by specifying --quiet.
And it breaks out of the loop when it knows it already found any change.
When you have a post-process filter (e.g. --diff-filter), however, the
path we found to be different in the previous round and set HAS_CHANGES
bit may end up being uninteresting, and there may be no output at the end.
The optimization needs to be disabled for such case.
Note that the f245194 (diff: change semantics of "ignore whitespace"
options, 2009-05-22) already disables this optimization by refraining
from setting HAS_CHANGES when post-process filters that need to inspect
the contents of the files (e.g. -S, -w) in diff_change() function.
Some versions of strlen use SSE to speed up the calculation and load 4
bytes at a time, even if it means reading past the end of the
allocated memory. This read is safe and when the strlen function is
inlined, it is not replaced by valgrind, which reports a
false-possitive.
Tell valgrind to ignore this particular error, as the read is, in
fact, safe. Current upstream-released version 3.6.1 is affected. Some
distributions have this fixed in their latest versions.
Signed-off-by: Carlos Martín Nieto <cmn@elego.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
- prepare_submodule_summary prepares the revision walker
to list changes in a submodule. That is, it:
* finds merge bases between the commits pointed to this
path from before ("left") and after ("right") the change;
* checks whether this is a fast-forward or fast-backward;
* prepares a revision walk to list commits in the symmetric
difference between the commits at each endpoint.
It returns nonzero on error.
- print_submodule_summary runs the revision walk and saves
the result to a strbuf in --left-right format.
The goal is just readability. No functional change intended.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Acked-by: Jens Lehmann <Jens.Lehmann@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
branch: split off function that writes tracking info and commit subject
Introduce a add_verbose_info function that takes care of adding
- an abbreviated object name;
- a summary of the form [ahead x, behind y] of the relationship
to the corresponding upstream branch;
- a one line commit subject
for the tip commit of a branch, for use in "git branch -v" output.
No functional change intended. This just unindents the code a little
and makes it easier to skip on first reading.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
In a struct definitions, unlike functions, the prevailing style is for
the opening brace to go on the same line as the struct name, like so:
struct foo {
int bar;
char *baz;
};
Indeed, grepping for 'struct [a-z_]* {$' yields about 5 times as many
matches as 'struct [a-z_]*$'.
Linus sayeth:
Heretic people all over the world have claimed that this inconsistency
is ... well ... inconsistent, but all right-thinking people know that
(a) K&R are _right_ and (b) K&R are right.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Since v1.7.2-rc0~23^2~2 (Add per-repository eol normalization,
2010-05-19), building with gcc -std=gnu89 -pedantic produces warnings
like the following:
convert.c:21:11: warning: comma at end of enumerator list [-pedantic]
gcc is right to complain --- these commas are not permitted in C89.
In the spirit of v1.7.2-rc0~32^2~16 (2010-05-14), remove them.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
git stash: show status relative to current directory
git status shows modified paths relative to current directory, so it's
possible to copy&paste them directly, even if you're in a subdirectory.
But "git stash apply" always shows status from root of git repository.
This is misleading because you can't use the paths without modifications.
This is caused by changing directory to root of repository at the
beginning of git stash.
This patch makes git stash show status relative to current directory.
Instead of removing the "cd to toplevel", which would affect whole
script and might have other side-effects, the fix is to change directory
temporarily back to original dir just before displaying status.
Signed-off-by: Piotr Krukowiecki <piotr.krukowiecki@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Revert "core.abbrevguard: Ensure short object names stay unique a bit longer"
This reverts commit 72a5b561fc1c4286bc7c5b0693afc076af261e1f, as adding
fixed number of hexdigits more than necessary to make one object name
locally unique does not help in futureproofing the uniqueness of names
we generate today.
SubmittingPatches: clarify the expected commit log description
Earlier, 47afed5 (SubmittingPatches: itemize and reflect upon well written
changes, 2009-04-28) added a discussion on the contents of the commit log
message, but the last part of the new paragraph didn't make much sense.
Reword it slightly to make it more readable.
Update the "quicklist" to clarify what we mean by "motivation" and
"contrast". Also mildly discourage external references.
The description was unclear if -c or --cc was the default (--cc is for
some commands), and incorrectly implied that the default applies to
all the diff generating commands.
Most importantly, "log" does not default to "--cc" (it defaults to
"--no-merges") and "log -p" obeys the user's wish to see non-combined
format. Only "diff" (during merge and three-blob comparison) and
"show" use --cc as the default.
Signed-off-by: Adam Monsen <haircut@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
git-compat-util.h: Honor HP C's noreturn attribute
HP C for Integrity servers (Itanium) gained support for noreturn
attribute sometime in 2006. It was released in Compiler Version
A.06.10 and made available in July 2006.
The __HP_cc define detects the HP C compiler version. Precede the
__GNUC__ check so it works well when compiling with HP C using -Agcc
option that enables partial support for the GNU C dialect. The -Agcc
defines the __GNUC__ too.
Signed-off-by: Michal Rokos <michal.rokos@nextsoft.cz> Signed-off-by: Junio C Hamano <gitster@pobox.com>
apply -v: show offset count when patch did not apply exactly
When the line number the patch intended to touch does not match
the line in the version being patched, GNU patch reports that
it applied the hunk at a different line number, with how big an
offset.
Teach "git apply" to do the same under --verbose option.
apply: do not patch lines that were already patched
When looking for a place to apply a hunk, we used to check lines that
match the preimage of it, starting from the line that the patch wants to
apply the hunk at, looking forward and backward with increasing offsets
until we find a match.
Colin Guthrie found an interesting case where this misapplied a patch that
wanted to touch a preimage that consists of
}
}
return 0;
}
which is a rather unfortunately common pattern.
The target version of the file originally had only one such location, but
the hunk immediately before that created another instance of such block of
lines, and find_pos() happily reported that the preimage of the hunk
matched what it wanted to modify.
Oops.
By marking the lines application of earlier hunks touched and preventing
match_fragment() from considering them as a match with preimage of other
hunks, we can reduce such an accident.
I also considered to teach apply_one_fragment() to take the offset we have
found while applying the previous hunk into account when looking for a
match with find_pos(), but dismissed that approach, because it would
sometimes work better but sometimes worse, depending on the difference
between the version the patch was created against and the version the
patch is being applied.
This does _not_ prevent misapplication of patches to a file that has many
similar looking blocks of lines and a preimage cannot identify which one
of them should be applied. For that, we would need to scan beyond the
first match in find_pos(), and issue a warning (or error out). That will
be a separate topic.
git_dir must always be non-NULL so "if (git_dir)" is unnecessary.
Before this code, if git_dir == NULL, it will default to
DEFAULT_GIT_DIR_ENVIRONMENT.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
If a pack file is small enough that its entire contents fits within
one mmap window, mmap the file and then immediately close its file
descriptor. This reduces the number of file descriptors that are
needed to read from repositories with many tiny pack files, such
as one that has received 1000 pushes (and created 1000 small pack
files) since its last repack.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Rather than using 'errno == EMFILE' after a failed open() call
to indicate the process is out of file descriptors and an LRU
pack window should be closed, place a hard upper limit on the
number of open packs based on the actual rlimit of the process.
By using a hard upper limit that is below the rlimit of the current
process it is not necessary to check for EMFILE on every single
fd-allocating system call. Instead reserving 25 file descriptors
makes it safe to assume the system call won't fail due to being over
the filedescriptor limit. Here 25 is chosen as a WAG, but considers
3 for stdin/stdout/stderr, and at least a few for other Git code
to operate on temporary files. An additional 20 is reserved as it
is not known what the C library needs to perform other services on
Git's behalf, such as nsswitch or name resolution.
This fixes a case where running `git gc --auto` in a repository
with more than 1024 packs (but an rlimit of 1024 open fds) fails
due to the temporary output file not being able to allocate a
file descriptor. The output file is opened by pack-objects after
object enumeration and delta compression are done, both of which
have already opened all of the packs and fully populated the file
descriptor table.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
git-cvsimport.perl: Bail out right away when reading from the server fails
If the CVS server is down, this reduced the git-cvsimport output from:
ssh: connect to host ijbswa.cvs.sourceforge.net port 22: Connection refused
Use of uninitialized value $rep in scalar chomp at /usr/local/libexec/git-core/git-cvsimport line 369.
Use of uninitialized value $rep in substitution (s///) at /usr/local/libexec/git-core/git-cvsimport line 370.
Expected Valid-requests from server, but got: <unknown>
to the less noisy:
ssh: connect to host ijbswa.cvs.sourceforge.net port 22: Connection refused
Failed to read from server at /usr/local/libexec/git-core/git-cvsimport line 370.
In this case a silent exit() instead of the die() would probably do,
but I assume that there could be cases where the connection attempt
succeeds, but reading from the server fails for other reasons.
Signed-off-by: Fabian Keil <fk@fabiankeil.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
doc: technical details about the index file format
This bases on the original work by Robin Rosenberg.
Signed-off-by: Robin Rosenberg <robin.rosenberg@dewire.com> Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
commit: error out for missing commit message template
When "git commit" was rewritten in C (v1.5.4-rc0~78^2~30,
2007-11-08), a subtle bug in --template was introduced. If the
file named by a --template parameter is missing, previously git
would error out with a message:
Commit template file does not exist.
but in the C version the --template parameter gets ignored and
the default template is used.
t7500 has two tests for this case which would have caught it, except
that with the default $EDITOR, the commit message template is left
unmodified, causing 'git commit' to error out and the test to
succeed.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
mergetool-lib: call vim in readonly mode for diffs
When [g]vimdiff is called for files which are opened already, the editor
complains about the existing swap file. But we do not want to write
anything when called from difftool. So, make difftool use "-R" for the
vim family. This
- prevents the use of a swap file and
- marks the buffers readonly.
Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Sanity-check config variable names when adding and retrieving them. As a side
effect code duplication between git_config_set_multivar and get_value (in
builtin/config.c) was removed and the common functionality was placed in
git_config_parse_key.
This breaks a test in t1300 which used invalid section-less keys in the tests
for "git -c". However, allowing such names there was useless, since there was
no way to set them via config file, and no part of git actually tried to use
section-less keys. This patch updates the test to use more realistic examples
as well as adding its own test.
Signed-off-by: Libor Pechacek <lpechacek@suse.cz> Acked-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
The logic in builtin_diffstat assumes that a
complete_rewrite pair should have its lines counted. This is
nonsensical for binary files and leads to confusing things
like:
So let's reorder the function to handle binary files first
(which from diffstat's perspective look like complete
rewrites anyway), then rewrites, then actual diffstats.
There are two bonus prizes to this reorder:
1. It gets rid of a now-superfluous goto.
2. The binary case is at the top, which means we can
further optimize it in the next patch.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Git traditionally overwrites untracked symlinks silently. This will
generally not cause massive data loss, but it is inconsistent with
the behavior for regular files, which are not silently overwritten.
With this change, git refuses to overwrite untracked symlinks by
default. If the user really wants to overwrite the untracked
symlink, he has git-clean and git-checkout -f at his disposal.
Signed-off-by: Clemens Buchacher <drizzd@aon.at> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Change commit_msg_is() in t/t7500-commit.sh to use test_cmp instead of
the shell's test function. Now if a test fails we'll get test_cmp
output showing us what failed.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>