Connectivity checks have to traverse the entire object graph
in the worst case (e.g., a full clone or a full push). For
large repositories like linux.git, this can take 30-60
seconds, during which time git may produce little or no
output.
Let's add the option of showing progress, which is taken
care of by rev-list.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Unless the "quiet" flag is given, check_connected sends any
errors to the stderr of the caller (because the child
rev-list inherits that descriptor). However, server-side
callers may want to send these over a sideband channel
instead. Let's make that possible.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The number of variants of check_everything_connected has
grown over the years, so that the "real" function takes
several possibly-zero, possibly-NULL arguments. We hid the
complexity behind some wrapper functions, but this doesn't
scale well when we want to add new options.
If we add more wrapper variants to handle the new options,
then we can get a combinatorial explosion when those options
might be used together (right now nobody wants to use both
"shallow" and "transport" together, so we get by with just a
few wrappers).
If instead we add new parameters to each function, each of
which can have a default value, then callers who want the
defaults end up with confusing invocations like:
check_everything_connected(fn, 0, data, -1, 0, NULL);
where it is unclear which parameter is which (and every
caller needs updated when we add new options).
Instead, let's add a struct to hold all of the optional
parameters. This is a little more verbose for the callers
(who have to declare the struct and fill it in), but it
makes their code much easier to follow, because every option
is named as it is set (and unused options do not have to be
mentioned at all).
Note that we could also stick the iteration function and its
callback data into the option struct, too. But since those
are required for each call, by avoiding doing so, we can let
very simple callers just pass "NULL" for the options and not
worry about the struct at all.
While we're touching each site, let's also rename the
function to check_connected(). The existing name was quite
long, and not all of the wrappers even used the full name.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This avoids the magic "9" array-size which we must avoid
overflowing, making further patches simpler.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
It's easy to ask rev-list to do a traversal that may takes
many seconds (e.g., by calling "--objects --all"). In theory
you can monitor its progress by the output you get to
stdout, but this isn't always easy.
Some operations, like "--count", don't make any output until
the end.
And some callers, like check_everything_connected(), are
using it just for the error-checking of the traversal, and
throw away stdout entirely.
This patch adds a "--progress" option which can be used to
give some eye-candy for a user waiting for a long traversal.
This is just a rev-list option and not a regular traversal
option, because it needs cooperation from the callbacks in
builtin/rev-list.c to do the actual count.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The check_everything_connected function takes a "quiet"
parameter which does two things if non-zero:
1. redirect rev-list's stderr to /dev/null to avoid
showing errors to the user
2. pass "--quiet" to rev-list
Item (1) is obviously useful. But item (2) is
surprisingly not. For rev-list, "--quiet" does not have
anything to do with chattiness on stderr; it tells rev-list
not to bother writing the list of traversed objects to
stdout, for efficiency. And since we always redirect
rev-list's stdout to /dev/null in this function, there is no
point in asking it to ever write anything to stdout.
The efficiency gains are modest; a best-of-five run of "git
rev-list --objects --all" on linux.git dropped from 32.013s
to 30.502s when adding "--quiet". That's only about 5%, but
given how easy it is, it's worth doing.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When updating large repositories, the LARGE_FLUSH limit (that is, the
limit at which the window growth strategy switches from exponential to
linear) is reached quite quickly. Use a conservative exponential growth
strategy when that limit is reached instead (and increase LARGE_FLUSH so
that there is no regression in window size).
This optimization is only applied during stateless RPCs to avoid the
issue raised and fixed in commit 44d8dc54 (Fix potential local
deadlock during fetch-pack, 2011-03-29).
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git p4" used a location outside $GIT_DIR/refs/ to place its
temporary branches, which has been moved to refs/git-p4-tmp/.
* ls/p4-tmp-refs:
git-p4: place temporary refs used for branch import under refs/git-p4-tmp
One part of "git am" had an oddball helper function that called
stuff from outside "his" as opposed to calling what we have "ours",
which was not gender-neutral and also inconsistent with the rest of
the system where outside stuff is usuall called "theirs" in
contrast to "ours".
* js/am-call-theirs-theirs-in-fallback-3way:
am: counteract gender bias
General code clean-up around a helper function to write a
single-liner to a file.
* jk/write-file:
branch: use write_file_buf instead of write_file
use write_file_buf where applicable
write_file: add format attribute
write_file: add pointer+len variant
write_file: use xopen
write_file: drop "gently" form
branch: use non-gentle write_file for branch description
am: ignore return value of write_file()
config: fix bogus fd check when setting up default config
Code clean-up to avoid using a variable string that compilers may
feel untrustable as printf-style format given to write_file()
helper function.
* jk/printf-format:
commit.c: remove print_commit_list()
avoid using sha1_to_hex output as printf format
walker: let walker_say take arbitrary formats
The .c/.h sources are marked as such in our .gitattributes file so
that "git diff -W" and friends would work better.
* rs/help-c-source-with-gitattributes:
.gitattributes: set file type for C files
Improve the look of the way "git fetch" reports what happened to
each ref that was fetched.
* nd/fetch-ref-summary:
fetch: reduce duplicate in ref update status lines with placeholder
fetch: align all "remote -> local" output
fetch: change flag code for displaying tag update and deleted ref
fetch: refactor ref update status formatting code
git-fetch.txt: document fetch output
The test framework learned a new helper test_match_signal to
check an exit code from getting killed by an expected signal.
* jk/test-match-signal:
t/lib-git-daemon: use test_match_signal
test_must_fail: use test_match_signal
t0005: use test_match_signal as appropriate
tests: factor portable signal check out of t0005
There are certain house-keeping tasks that need to be performed at
the very beginning of any Git program, and programs that are not
built-in commands had to do them exactly the same way as "git"
potty does. It was easy to make mistakes in one-off standalone
programs (like test helpers). A common "main()" function that
calls cmd_main() of individual program has been introduced to
make it harder to make mistakes.
* jk/common-main:
mingw: declare main()'s argv as const
common-main: call git_setup_gettext()
common-main: call restore_sigpipe_to_default()
common-main: call sanitize_stdfds()
common-main: call git_extract_argv0_path()
add an extra level of indirection to main()
A test that unconditionally used "mktemp" learned that the command
is not necessarily available everywhere.
* ak/lazy-prereq-mktemp:
t7610: test for mktemp before test execution
"git grep -i" has been taught to fold case in non-ascii locales
correctly.
* nd/icase:
grep.c: reuse "icase" variable
diffcore-pickaxe: support case insensitive match on non-ascii
diffcore-pickaxe: Add regcomp_or_die()
grep/pcre: support utf-8
gettext: add is_utf8_locale()
grep/pcre: prepare locale-dependent tables for icase matching
grep: rewrite an if/else condition to avoid duplicate expression
grep/icase: avoid kwsset when -F is specified
grep/icase: avoid kwsset on literal non-ascii strings
test-regex: expose full regcomp() to the command line
test-regex: isolate the bug test code
grep: break down an "if" stmt in preparation for next changes
The commands in the "log/diff" family have had an FILE* pointer in the
data structure they pass around for a long time, but some codepaths
used to always write to the standard output. As a preparatory step
to make "git format-patch" available to the internal callers, these
codepaths have been updated to consistently write into that FILE*
instead.
* js/log-to-diffopt-file:
mingw: fix the shortlog --output=<file> test
diff: do not color output when --color=auto and --output=<file> is given
t4211: ensure that log respects --output=<file>
shortlog: respect the --output=<file> setting
format-patch: use stdout directly
format-patch: avoid freopen()
format-patch: explicitly switch off color when writing to files
shortlog: support outputting to streams other than stdout
graph: respect the diffopt.file setting
line-log: respect diffopt's configured output file stream
log-tree: respect diffopt's configured output file stream
log: prepare log/log-tree to reuse the diffopt.close_file attribute
Fix recently introduced codepaths that are involved in parallel
submodule operations, which gave up on reading too early, and
could have wasted CPU while attempting to write under a corner
case condition.
* sb/submodule-parallel-fetch:
hoist out handle_nonblock function for xread and xwrite
xwrite: poll on non-blocking FDs
xread: retry after poll on EAGAIN/EWOULDBLOCK
"git blame -M" missed a single line that was moved within the file.
* dk/blame-move-no-reason-for-1-line-context:
blame: require 0 context lines while finding moved lines with -M
A new configuration variable core.sshCommand has been added to
specify what value for GIT_SSH_COMMAND to use per repository.
* nd/connect-ssh-command-config:
connect: read $GIT_SSH_COMMAND from config file
Use a string constant instead of an empty strbuf to shorten the code
and make it easier to read.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Use strbuf_addbuf() where possible; it's shorter and more efficient.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This has always been supported since we read config variables
based on the command-line option parser. Document it explicitly
since users usually want to maintain the same program across
invocations.
Signed-off-by: Eric Wong <e@80x24.org>
When reporting broken links between commits/trees/blobs, it would be
quite helpful at times if the user would be told how the object is
supposed to be reachable.
With the new --name-objects option, git-fsck will try to do exactly
that: name the objects in a way that shows how they are reachable.
For example, when some reflog got corrupted and a blob is missing that
should not be, the user might want to remove the corresponding reflog
entry. This option helps them find that entry: `git fsck` will now
report something like this:
broken link from tree b5eb6ff... (refs/stash@{<date>}~37:)
to blob ec5cf80...
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Somehow, this test was using:
{
echo A
echo B
} > file
block to feed file contents. This changes those to the form most common
in git test scripts:
cat >file <<-\EOF
A
B
EOF
Signed-off-by: Mike Hommey <mh@glandium.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When blaming files, changes in the work tree are taken into account
and displayed as being "Not Committed Yet".
However, when blaming a file that is not known to the current HEAD,
git blame fails with `no such path 'foo' in HEAD`, even when the file
was git add'ed.
Allowing such a blame is useful when the new file added to the index
(not yet committed) was created by renaming an existing file. It
also is useful when the new file was created from pieces already in
HEAD, moved or copied from other files and blaming with copy
detection (i.e. "-C").
Signed-off-by: Mike Hommey <mh@glandium.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If a subdirectory contains nothing but i-t-a entries, we generate an
empty tree object and add it to its parent tree. Which is wrong. Such
a subdirectory should not be added.
Note that this has a cascading effect. If subdir 'a/b/c' contains
nothing but i-t-a entries, we ignore it. But then if 'a/b' contains
only (the non-existing) 'a/b/c', then we should ignore 'a/b' while
building 'a' too. And it goes all the way up to top directory.
Noticed-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Commit 3cf773e (cache-tree: fix writing cache-tree when CE_REMOVE is
present - 2012-12-16) skips i-t-a entries when building trees objects
from the index. Unfortunately it may skip too much.
The code in question checks if an entry is an i-t-a one, then no tree
entry will be written. But it does not take into account that
directories can also be written with the same code. Suppose we have
this in the index.
a-file
subdir/file1
subdir/file2
subdir/file3
the-last-file
We write an entry for a-file as normal and move on to subdir/file1,
where we realize the entry name for this level is simply just
"subdir", write down an entry for "subdir" then jump three items ahead
to the-last-file.
That is what happens normally when the first file in subdir is not an
i-t-a entry. If subdir/file1 is an i-t-a, because of the broken
condition in this code, we still think "subdir" is an i-t-a file and
not writing "subdir" down and jump to the-last-file. The result tree
now only has two items: a-file and the-last-file. subdir should be
there too (even though it only records two sub-entries, file2 and
file3).
If the i-t-a entry is subdir/file2 or subdir/file3, this is not a
problem because we jump over them anyway. Which may explain why the
bug is hidden for nearly four years.
Fix it by making sure we only skip i-t-a entries when the entry in
question is actual an index entry, not a directory.
Reported-by: Yuri Kanivetsky <yuri.kanivetsky@gmail.com>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Similar to $EMPTY_TREE this makes it easier to recognize this special
SHA-1 and change hash later.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This is a special SHA1. Let's keep it at one place, easier to replace
later when the hash change comes, easier to recognize.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We will need this in the next commit, where fsck will be taught to
optionally name the objects when reporting issues about them.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If fsck_options->name_objects is initialized, and if it already has
name(s) for the object(s) that are to be the starting point(s) for
fsck_walk(), then that function will now add names for the objects
that were walked.
This will be highly useful for teaching git-fsck to identify root causes
for broken links, which is the task for the next patch in this series.
Note that this patch opts for decorating the objects with plain strings
instead of full-blown structs (à la `struct rev_name` in the code of
the `git name-rev` command), for several reasons:
- the code is much simpler than if it had to work with structs that
describe arbitrarily long names such as "master~14^2~5:builtin/am.c",
- the string processing is actually quite light-weight compared to the
rest of fsck's operation,
- the caller of fsck_walk() is expected to provide names for the
starting points, and using plain and simple strings is just the
easiest way to do that.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In many places, we refer to objects via their SHA-1s. Let's abstract
that into a function.
For the moment, it does nothing else than what we did previously: print
out the 40-digit hex string. But that will change over the course of the
next patches.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We need to test linkage of pthread_create and pthread_join,
as pthread_mutex_* and pthread_key_* functions do not need
extra linkage under FreeBSD 10.3, leading to a false-positive
of the empty case.
Signed-off-by: Eric Wong <e@80x24.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In inetd mode, we are not guaranteed stdin or stdout is a
socket; callers could filter the data through a pipe
or be testing with regular files.
This prevents t5802 from polluting syslog.
Signed-off-by: Eric Wong <e@80x24.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The OS X build pulls in sys/queue.h, which pollutes the preprocessor
namespace with a macro generically named LIST_HEAD, and clashes with
the name we use here.
ref: http://mid.gmane.org/FB76544F-16F7-45CA-9649-FD62EE44B0DE@gmail.com
Reported-by: Lars Schneider <larsxschneider@gmail.com>
Signed-off-by: Eric Wong <e@80x24.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
As we are not yet moving everything to size_t but still using ulong
internally when talking about the size of object, platforms with
32-bit long will not be able to produce tar archive with 4GB+ file,
and cannot grok 077777777777UL as a constant. Disable the extended
header feature and do not test it on them.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Skip tests that are unrunnable on platforms without 64-bit long
to avoid unnecessary test failures.
* jk/tzoffset-fix:
t0006: skip "far in the future" test when unsigned long is not long enough
Git's source code refers to timestamps as unsigned longs. On 32-bit
platforms, as well as on Windows, unsigned long is not large enough
to capture dates that are "absurdly far in the future".
While we can fix this issue properly by replacing unsigned long with
a larger type, we want to be a bit more conservative and just skip
those tests on the maint track.
Signed-off-by: Jeff King <peff@peff.net>
Helped-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The functions `mk_repo_pair` as well as `test_refs` are borrowed from
t5543-atomic-push, with additional hooks installed.
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This implements everything that is required on the client side to make use
of push options from the porcelain push command.
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The pre/post receive hook may be interested in more information from the
user. This information can be transmitted when both client and server
support the "push-options" capability, which when used is a phase directly
after update commands ended by a flush pkt.
Similar to the atomic option, the server capability can be disabled via
the `receive.advertisePushOptions` config variable. While documenting
this, fix a nit in the `receive.advertiseAtomic` wording.
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The environment variable GIT_PUSH_OPTION_COUNT is set to the number of
push options sent, and GIT_PUSH_OPTION_{0,1,..} is set to the transmitted
option.
The code is not executed as the push options are set to NULL, nor is the
new capability advertised.
There was some discussion back and forth how to present these push options
to the user as there are some ways to do it:
Keep all options in one environment variable
============================================
+ easiest way to implement in Git
- This would make things hard to parse correctly in the hook.
Put the options in files instead,
filenames are in GIT_PUSH_OPTION_FILES
======================================
+ After a discussion about environment variables and shells, we may not
want to put user data into an environment variable (see [1] for example).
+ We could transmit binaries, i.e. we're not bound to C strings as
we are when using environment variables to the user.
+ Maybe easier to parse than constructing environment variable names
GIT_PUSH_OPTION_{0,1,..} yourself
- cleanup of the temporary files is hard to do reliably
- we have race conditions with multiple clients pushing, hence we'd need
to use mkstemp. That's not too bad, but still.
Use environment variables, but restrict to key/value pairs
==========================================================
(When the user pushes a push option `foo=bar`, we'd
GIT_PUSH_OPTION_foo=bar)
+ very easy to parse for a simple model of push options
- it's not sufficient for more elaborate models, e.g.
it doesn't allow doubles (e.g. cc=reviewer@email)
Present the options in different environment variables
======================================================
(This is implemented)
* harder to parse as a user, but we have a sample hook for that.
- doesn't allow binary files
+ allows the same option twice, i.e. is not restrictive about
options, except for binary files.
+ doesn't clutter a remote directory with (possibly stale)
temporary files
As we first want to focus on getting simple strings to work
reliably, we go with the last option for now. If we want to
do transmission of binaries later, we can just attach a
'side-channel', e.g. "any push option that contains a '\0' is
put into a file instead of the environment variable and we'd
have new GIT_PUSH_OPTION_FILES, GIT_PUSH_OPTION_FILENAME_{0,1,..}
environment variables".
[1] 'Shellshock' https://lwn.net/Articles/614218/
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In v1.8.5 days, 7f2ea5f0 (diff: allow lowercase letter to specify
what change class to exclude, 2013-07-17) taught the "--diff-filter"
mechanism to take lowercase letters as exclusion, but we forgot to
document it.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
