This fixes the longstanding "Racy GIT" problem, which was pretty
much there from the beginning of time, but was first
demonstrated by Pasky in this message on October 24, 2005:
http://marc.theaimsgroup.com/?l=git&m=113014629716878
If you run the following sequence of commands:
echo frotz >infocom
git update-index --add infocom
echo xyzzy >infocom
so that the second update to file "infocom" does not change
st_mtime, what is recorded as the stat information for the cache
entry "infocom" exactly matches what is on the filesystem
(owner, group, inum, mtime, ctime, mode, length). After this
sequence, we incorrectly think "infocom" file still has string
"frotz" in it, and get really confused. E.g. git-diff-files
would say there is no change, git-update-index --refresh would
not even look at the filesystem to correct the situation.
Some ways of working around this issue were already suggested by
Linus in the same thread on the same day, including waiting
until the next second before returning from update-index if a
cache entry written out has the current timestamp, but that
means we can make at most one commit per second, and given that
the e-mail patch workflow used by Linus needs to process at
least 5 commits per second, it is not an acceptable solution.
Linus notes that git-apply is primarily used to update the index
while processing e-mailed patches, which is true, and
git-apply's up-to-date check is fooled by the same problem but
luckily in the other direction, so it is not really a big issue,
but still it is disturbing.
The function ce_match_stat() is called to bypass the comparison
against filesystem data when the stat data recorded in the cache
entry matches what stat() returns from the filesystem. This
patch tackles the problem by changing it to actually go to the
filesystem data for cache entries that have the same mtime as
the index file itself. This works as long as the index file and
working tree files are on the filesystems that share the same
monotonic clock. Files on network mounted filesystems sometimes
get skewed timestamps compared to "date" output, but as long as
working tree files' timestamps are skewed the same way as the
index file's, this approach still works. The only problematic
files are the ones that have the same timestamp as the index
file's, because two file updates that sandwitch the index file
update must happen within the same second to trigger the
problem.
Signed-off-by: Junio C Hamano <junkio@cox.net>
When .git/refs/heads/frotz and .git/refs/tags/frotz existed, and
the object name stored in .git/refs/heads/frotz were corrupt, we
ended up picking tags/frotz without complaining. Worse yet, if
the corrupt .git/refs/heads/frotz was more than 40 bytes and
began with hexadecimal characters, it silently overwritten the
initial part of the returned result.
This commit adds a couple of tests to demonstrate these cases,
with a fix.
Signed-off-by: Junio C Hamano <junkio@cox.net>
If GIT_AUTHOR_EMAIL is of a certain form, `git rebase master' will blow
away the author name and email when fast-forward merging commits. I
have not tracked it down, but here is a testcase that demonstrates the
behavior.
Signed-off-by: Amos Waterland <apw@us.ibm.com>
Acked-by: Michal Ostrowski <mostrows@watson.ibm.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
In case some refs couldn't be pushed out due to an error (mostly the
not-a-proper-subset error), make git-send-pack exit with non-zero status
after the push is over (that is, it still tries to push out the rest
of the refs).
[jc: I adjusted a test for this change.]
Signed-off-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Junio C Hamano <junkio@cox.net>
This test kicks in only if you built test-delta executable, and
makes sure that the basic delta routine is working properly even
on empty files.
This commit is to make sure we have a test to catch the
breakage. The delitifier code is still broken, which will be
fixed with the next commit.
Signed-off-by: Junio C Hamano <junkio@cox.net>
This adds a couple of tests to cover the following renaming
merge cases:
- one side renames and the other side does not, with and without
content conflicts.
- both side rename to the same path, with and without content
conflicts.
The test setup also prepares a case in which both side rename to
different destination, but currently the code collapses these
destination paths and removes the original path, which may be
wrong. The outcome of this case is not checked by the tests in
this round.
Signed-off-by: Junio C Hamano <junkio@cox.net>
People seem to be getting test failure from t6021 not becuase
git is faulty but because they forgot to install "merge". Check
this and other trivial pilot errors in the first test.
Signed-off-by: Junio C Hamano <junkio@cox.net>
This is just a belts-and-suspenders check, but makes sure we
have both "git" and "git-init-db" built, executable, and
checking.
Signed-off-by: Junio C Hamano <junkio@cox.net>
This is to catch an error where tests are run without first
building what are being tested. Relying on prefixing $PATH with
the build directory and expect that the PATH mechanism would
find what we just built would silently run an already installed
binaries from the PATH.
Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Not everybody can rely on /bin/sh to be sane, and we support
SHELL_PATH for that. Use it.
mktemp(1) is not used anywhere else in the core git. Do not
introduce dependency on it.
Not everybody's "which" gives a sane return value. For example,
on Solaris 'which XXX' says "no XXX in /usr/bin /bin ..." and
exits with zero status. The lesson here is to never use 'which'
in your scripts.
Signed-off-by: Junio C Hamano <junkio@twinsun.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
The test is considered OK if it exits with code $1
Signed-off-by: Fredrik Kuivinen <freku045@student.liu.se>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano, Sat, Nov 26, 2005 03:45:52 +0100:
> I haven't seriously used git-mv myself, so
> somebody needs to test it, and if it actually works and Ack on
> it, please.
It actually works in subdirs.
Signed-off-by: Junio C Hamano <junkio@cox.net>
The diff for this commit is a good illustration of what changed
in ls-tree behaviour.
- With -r, tree nodes themselves are not shown anymore, but
blobs in subtrees are shown.
- The order of paths parameters do not matter, since they are
not like arguments to /bin/ls, but are filter patterns.
- When filter patterns overlap, unintuitive things happen.
Signed-off-by: Junio C Hamano <junkio@cox.net>
A .git/config like follows becomes valid with this patch:
[remote.junio]
url = git://git.kernel.org/pub/scm/git/git.git
pull = master:junio todo:todo +pu:pu
[remote.ibook]
url = ibook:git/
pull = master:ibook
push = master:quetzal
(This patch only does the ini file thing, git-fetch and friends still
ignore these values).
Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Extend the regex syntax of value_regex so that prepending an exclamation
mark means non-match:
[core]
quetzal = "Dodo" for Brainf*ck
quetzal = "T. Rex" for Malbolge
quetzal = "cat"
You can match the third line with
git-config-set --get quetzal '! for '
Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
... namely
--replace-all, to replace any amount of matching lines, not just 0 or 1,
--get, to get the value of one key,
--get-all, the multivar version of --get, and
--unset-all, which deletes all matching lines from .git/config
Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
A new option, --allow-binary-replacement, is introduced.
When you feed a diff that records full SHA1 name of pre- and
post-image blob on its index line to git-apply with this option,
the post-image blob replaces the path if what you have in the
working tree matches the pre-image _and_ post-image blob is
already available in the object directory.
Later we _might_ want to enhance the diff output to also include
the full binary data of the post-image, to make this more
useful, but this is good enough for local rebasing application.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Recently we fixed 'git-apply --stat' not to barf on a binary
differences. But it accidentally broke the error detection when
we actually attempt to apply them.
This commit fixes the problem and adds test cases.
Signed-off-by: Junio C Hamano <junkio@cox.net>
The recently we updated rev-list --topo-order to show the heads
in date order, but we had a test that expected to see the old
behaviour.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Make git-update-ref create references with slashes in them. git-branch
and git-checkout already support such reference names.
git-branch can use git-update-ref to create the references in a more
formal manner now.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Because a batch-oriented script creates many commits within a second
on a fast machine, show-branch output of the test results are unstable
without topo-order.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Although it was shown that the "full contamination" was not really full
during the list discussion, the series improves things without incurring
extra parsing cost, and here is a test to check that.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Allow failed tests to be ignored using make's "-i". The patch also
disables parallel make in t/. This doesn't make the testing any
different as before: the tests were run sequentially before.
It also allows to run more tests, ignoring the ones usually failing
just to figure out if something else broke. (Or to ignore plainly
uninteresting situations because of the testing being done on say...
cygwin ;)
Signed-off-by: Junio C Hamano <junkio@cox.net>
We checked the result of patch application for full permission bits,
when the only thing we cared about was to make sure the executable
bit was correctly set.
Noticed by Peter Baumann.
Signed-off-by: Junio C Hamano <junkio@cox.net>
For everyone cursed by dos/windows line endings (aka CRLF):
The code reading the .gitignore files (excludes and excludes per
directory) leaves \r in the patterns, which causes fnmatch to fail for
no obvious reason. Just remove a "\r" preceding a "\n"
unconditionally.
Signed-off-by: Junio C Hamano <junkio@cox.net>
On Linux, "mktemp tmp-XXXX" will not work. Also, redirect stderr on which,
so it does not complain too loudly. After all, this test should only be
executed when old binaries are available.
Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
The next patches will extend the pack protocol. This test assures that this
extension is compatible to earlier versions of git-fetch-pack/git-upload-pack.
All you need to do to take advantage of this test, is to install older
known-to-be-working binaries in the path as "old-git-fetch-pack" and
"old-git-upload-pack".
Note that the warning when testing with old-git-fetch-pack is to be
expected (it just says that the old version was not taking advantage
of all the information which the server sent).
Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
This test provides a minimal example of what went wrong with the old
git-fetch-pack (and now works beautifully).
Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
This patch allows the testsuite to run properly when the full path to
the git sources contains spaces or other symbols that need to be quoted.
Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
This removes the unoptimization. The previous round does not mind
missing fan-out directories, but still makes sure they exist, lest
older versions choke on a repository created/packed by it.
This round does not play that nicely anymore -- empty fan-out
directories are not created by init-db, and will stay removed by
prune-packed. The prune command also removes empty fan-out directories.
Signed-off-by: Junio C Hamano <junkio@cox.net>
On FAT/NTFS, filenames cannot contain tabs. So t3300-funny-names would
reliably fail already when trying to create such files.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Individual tests for hooks would want to have their own tests when
written. Also we should not pick up from random templates the user
happens to have.
Signed-off-by: Junio C Hamano <junkio@cox.net>
