Back in e3c6f240fd Junio taught
git-fetch to avoid copying objects when we are fetching from
a repository that is already registered as an alternate object
database. In such a case there is no reason to copy any objects
as we can already obtain them through the alternate.
However we need to ensure the objects are all reachable, so we
run `git rev-list --objects $theirs --not --all` to verify this.
If any object is missing or unreadable then we need to fetch/copy
the objects from the remote. When a missing object is detected
the git-rev-list process will exit with a non-zero exit status,
making this condition quite easy to detect.
Although git-fetch is currently a builtin (and so is rev-list)
we cannot invoke the traverse_objects() API at this point in the
transport code. The object walker within traverse_objects() calls
die() as soon as it finds an object it cannot read. If that happens
we want to resume the fetch process by calling do_fetch_pack().
To get around this we spawn git-rev-list into a background process
to prevent a die() from killing the foreground fetch process,
thus allowing the fetch process to resume into do_fetch_pack()
if copying is necessary.
We aren't interested in the output of rev-list (a list of SHA-1
object names that are reachable) or its errors (a "spurious" error
about an object not being found as we need to copy it) so we redirect
both stdout and stderr to /dev/null.
We run this git-rev-list based check before any fetch as we may
already have the necessary objects local from a prior fetch. If we
don't then its very likely the first $theirs object listed on the
command line won't exist locally and git-rev-list will die very
quickly, allowing us to start the network transfer. This test even
on remote URLs may save bandwidth if someone runs `git pull origin`,
sees a merge conflict, resets out, then redoes the same pull just
a short time later. If the remote hasn't changed between the two
pulls and the local repository hasn't had git-gc run in it then
there is probably no need to perform network transfer as all of
the objects are local.
Documentation for the new quickfetch function was suggested and
written by Junio, based on his original comment in git-fetch.sh.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Some uses of git-rev-list are to run it with --objects to see if
a range of objects between two or more commits is fully connected
or not. In such a case the caller doesn't care about the actual
object names or hash hints so formatting this data only for it to
be dumped to /dev/null by a redirect is a waste of CPU time. If
all the caller needs is the exit status then --quiet can be used
to bypass the commit and object formatting.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Some callers may wish to redirect stderr to /dev/null in some
contexts, such as if they are executing a command only to get
the exit status and don't want users to see whatever output it
may produce as a side-effect of computing that exit status.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Previously git-fetch.sh used `git cat-file -t` to determine if an
object referenced by a tag exists, and if so fetch that tag locally.
This was subtly broken during the port to C based builtin-fetch as
lookup_object() only works to locate an object if it was previously
accessed by the transport. Not all transports will access all
objects in this way, so tags were not always being fetched.
The rsync transport never loads objects into the internal object
table so automated tag following didn't work if rsync was used.
Automated tag following also didn't work on the native transport
if the new tag was behind the common point(s) negotiated between
the two ends of the connection as the tag's referrant would not
be loaded into the internal object table. Further the automated
tag following was broken with the HTTP commit walker if the new
tag's referrant was behind an existing ref, as the walker would
stop before loading the tag's referrant into the object table.
Switching to has_sha1_file() restores the original behavior from
the shell script by checking if the object exists in the ODB,
without relying on the state left behind by a transport.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
* maint:
fix index-pack with packs >4GB containing deltas on 32-bit machines
git-hash-object should honor config variables
gitweb: correct month in date display for atom feeds
A --verbose option to push should also be passed to the
transport layer, i.e. git-send-pack, git-http-push.
git push is modified to do so.
Signed-off-by: Steffen Prohaska <prohaska@zib.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This probably hasn't been properly tested before. Here's a script to
create a 8GB repo with the necessary characteristics (copy the
test-genrandom executable from the Git build tree to /tmp first):
-----
#!/bin/bash
git init
git config core.compression 0
# create big objects with no deltas
for i in $(seq -w 1 2 63)
do
echo $i
/tmp/test-genrandom $i 268435456 > file_$i
git add file_$i
rm file_$i
echo "file_$i -delta" >> .gitattributes
done
# create "deltifiable" objects in between big objects
for i in $(seq -w 2 2 64)
do
echo "$i $i $i" >> grow
cp grow file_$i
git add file_$i
rm file_$i
done
rm grow
# create a pack with them
git commit -q -m "commit of big objects interlaced with small deltas"
git repack -a -d
-----
Then clone this repo over the Git protocol.
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This patch removes a spurious "command not found" error
and actually makes the "Test script did not set test_description."
string follow the command line option "--no-color".
Signed-off-by: Michele Ballabio <barra_cuda@katamail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The option value for --sort is already a pointer to a pointer to struct
ref_sort, so just use it.
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If we were listing objects too then the objects were buffered in an
array only reachable from a stack allocated structure. When this
function returns that array would be leaked as nobody would have
a reference to it anymore.
Historically this hasn't been a problem as the primary user of
traverse_commit_list() (the noble git-rev-list) would terminate
as soon as the function was finished, thus allowing the operating
system to cleanup memory. However we have been leaking this data
in git-pack-objects ever since that program learned how to run the
revision listing internally, rather than relying on reading object
names from git-rev-list.
To better facilitate reuse of traverse_commit_list during other
builtin tools (such as git-fetch) we shouldn't leak temporary memory
like this and instead we need to clean up properly after ourselves.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Not doing so is likely to create a messed up display when sent over the
sideband protocol.
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We check in cmd_blame() if the specified path is there, but we
failed to set up the working tree before that.
While at it, make setup_work_tree() just return if it was run
before.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Old commit walkers other than http/curl transport have been removed
for some time now. Remove their documents.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This makes it possible to mark commands that are deprecated in the
command list of the primary manual page git(7), and uses it to
mark "git lost-found" and "git tar-tree" as deprecated.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* maint:
Start preparing for 1.5.3.6
git-send-email: Change the prompt for the subject of the initial message.
SubmittingPatches: improve the 'Patch:' section of the checklist
instaweb: Minor cleanups and fixes for potential problems
stop t1400 hiding errors in tests
Makefile: add missing dependency on wt-status.h
refresh_index_quietly(): express "optional" nature of index writing better
Fix sed string regex escaping in module_name.
Avoid a few unportable, needlessly nested "...`...".
git-mailsplit: with maildirs not only process cur/, but also new/
Signed-off-by: Junio C Hamano <gitster@pobox.com>
\n is not portable in a s/// replacement string, only
in the regex part. backslash-newline helps.
Signed-off-by: Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
I never understood what this prompt was asking for until I read the actual
source code. I think this wording is much more understandable.
Signed-off-by: Benoit Sigoure <tsuna@lrde.epita.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
There were 2 items "send patch to..." but having different set of
addresses to send patch to. Merge them together and move the resulting
item to the end of checklist.
Signed-off-by: Sergei Organov <osv@javad.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Fix path quoting and test of empty values that some shells do not like.
Remove duplicate check and setting of $browser.
Signed-off-by: Jonas Fonseca <fonseca@diku.dk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The last rm in the test was lacking an "&&" before it,
which caused the errors in the commands be silently hidden.
Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The point of the part of the code this patch touches is that if
we modified the active_cache, we try to write it out and make it
the index file for later users to use by calling
"commit_locked_index", but we do not really care about the
failure from this sequence because it is done purely as an
optimization.
The original code called three functions primarily for their
side effects but as condition of an if statement, which is
admittedly a bad style.
Incidentally, it squelches an "empty if body" warning from gcc.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When escaping a string to be used as a sed regex, it is important
to only escape active characters. Escaping other characters is
undefined according to POSIX, and in practice leads to issues with
extensions such as GNU sed's \+.
Signed-off-by: Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Decline deleting tags or branches through git push <remote> :<ref> by
default, support config options hooks.allowdeletetag, hooks.allowdeletebranch
to override this per repository.
Before this patch the update hook interpreted deleting a tag, no matter if
annotated or not, through git push <remote> :<tag> as unannotated tag, and
declined it by default, but with an unappropriate error message:
$ git push origin :atag
deleting 'refs/tags/atag'
*** The un-annotated tag, atag, is not allowed in this repository
*** Use 'git tag [ -a | -s ]' for tags you want to propagate.
ng refs/tags/atag hook declined
error: hooks/update exited with error code 1
error: hook declined to update refs/tags/atag
error: failed to push to 'monolith:/git/qm/test-repo'
Signed-off-by: Gerrit Pape <pape@smarden.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The update hook template intends to abort if the project description file
hasn't been adjusted or is empty. This patch fixes the check for 'being
adjusted'.
Signed-off-by: Gerrit Pape <pape@smarden.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When saving patches to a maildir with e.g. mutt, the files are put into
the new/ subdirectory of the maildir, not cur/. This makes git-am state
"Nothing to do.". This patch lets git-mailsplit additional check new/
after reading cur/.
This was reported by Joey Hess through
http://bugs.debian.org/447396
Signed-off-by: Gerrit Pape <pape@smarden.org>
Acked-by: Jeff King <peff@peff.net>
Acked-by: Alex Riesen <raa.lkml@gmail.com>
Acked-by: Fernando J. Pereda <ferdy@gentoo.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* mh/work-tree:
Make git-blame fail when working tree is needed and we're not in one
Don't always require working tree for git-rm
Use setup_work_tree() in builtin-ls-files.c
Refactor working tree setup
