Some people argue that these were silly from the beginning (see
http://thread.gmane.org/gmane.comp.version-control.git/285590/focus=285601
for example), but we have to support them for compatibility.
That doesn't mean we have to show them in the documentation. These
were already left out of the main list, but a reference in the main
manpage was left, so remove that.
Also add a note to discourage their use if anybody goes looking for them
in the source code.
Signed-off-by: Carlos Martín Nieto <cmn@dwim.me> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Some of the test-* programs rely on examining refs, but did
not bother to make sure we are actually in a git repository.
Let's have them call setup_git_directory() to do so.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
If we are running "git grep --no-index" outside of a git
repository, we behave roughly like "grep -r", examining all
files in the current directory and its subdirectories.
However, because we use fill_directory() to do the
recursion, it will skip over any directories which look like
sub-repositories.
For a normal git operation (like "git grep" in a repository)
this makes sense; we do not want to cross the boundary out
of our current repository into a submodule. But for
"--no-index" without a repository, we should look at all
files, including embedded repositories.
There is one exception, though: we probably should _not_
descend into ".git" directories. Doing so is inefficient and
unlikely to turn up useful hits.
This patch drops our use of dir.c's gitlink-detection, but
we do still avoid ".git". That makes us more like tools such
as "ack" or "ag", which also know to avoid cruft in .git.
As a bonus, this also drops our usage of the ref code
when we are outside of a repository, making the transition
to pluggable ref backends cleaner.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
The mailmap code may be triggered outside of a repository by
git-shortlog. There is no point in looking up a name like
"HEAD:.mailmap" there; without a repository, we have no
refs.
This is unlikely to matter much in practice for the current
code, as we would simply fail to find the ref. But as the
refs code learns about new backends, this is more important;
without a repository, we do not even know which backend to
look at.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
The remote-config code wants to look at HEAD to mark the
current branch specially. But if we are not in a repository
(e.g., running "git archive --remote"), this makes no sense;
there is no HEAD to look at, and we have no current branch.
This doesn't really cause any bugs in practice (if you are
not in a repo, you probably don't have a .git/HEAD file),
but we should be more careful about triggering the refs code
at all in a non-repo. As we grow new ref backends, we would
not even know which backend to use.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
setup: set startup_info->have_repository more reliably
When setup_git_directory() is called, we set a flag in
startup_info to indicate we have a repository. But there are
a few other mechanisms by which we might set up a repo:
1. When creating a new repository via init_db(), we
transition from no-repo to being in a repo. We should
tweak this flag at that moment.
2. In enter_repo(), a stricter form of
setup_git_directory() used by server-side programs, we
check the repository format config. After doing so, we
know we're in a repository, and can set the flag.
With these changes, library code can now reliably tell
whether we are in a repository and act accordingly. We'll
leave the "prefix" field as NULL, which is what happens when
setup_git_directory() finds there is no prefix.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Commit a60645f (setup: remember whether repository was
found, 2010-08-05) introduced the startup_info structure,
which records some parts of the setup_git_directory()
process (notably, whether we actually found a repository or
not).
One of the uses of this data is for functions to behave
appropriately based on whether we are in a repo. But the
startup_info struct is just a pointer to storage provided by
the main program, and the only program that sets it up is
the git.c wrapper. Thus builtins have access to
startup_info, but externally linked programs do not.
Worse, library code which is accessible from both has to be
careful about accessing startup_info. This can be used to
trigger a die("BUG") via get_sha1():
$ git fast-import <<-\EOF
tag foo
from HEAD:./whatever
EOF
fatal: BUG: startup_info struct is not initialized.
Obviously that's fairly nonsensical input to feed to
fast-import, but we should never hit a die("BUG"). And there
may be other ways to trigger it if other non-builtins
resolve sha1s.
So let's point the storage for startup_info to a static
variable in setup.c, making it available to all users of the
library code. We _could_ turn startup_info into a regular
extern struct, but doing so would mean tweaking all of the
existing use sites. So let's leave the pointer indirection
in place. We can, however, drop any checks for NULL, as
they will always be false (and likewise, we can drop the
test covering this case, which was a rather artificial
situation using one of the test-* programs).
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
strbuf_getwholeline: NUL-terminate getdelim buffer on error
Commit 0cc30e0 (strbuf_getwholeline: use getdelim if it is
available, 2015-04-16) tries to clean up after getdelim()
returns EOF, but gets one case wrong, which can lead in some
obscure cases to us reading uninitialized memory.
After getdelim() returns -1, we re-initialize the strbuf
only if sb->buf is NULL. The thinking was that either:
1. We fed an existing allocated buffer to getdelim(), and
at most it would have realloc'd, leaving our NUL in
place.
2. We didn't have a buffer to feed, so we gave getdelim()
NULL; sb->buf will remain NULL, and we just want to
restore the empty slopbuf.
But that second case isn't quite right. getdelim() may
allocate a buffer, write nothing into it, and then return
EOF. The resulting strbuf rightfully has sb->len set to "0",
but is missing the NUL terminator in the first byte.
Most call-sites are fine with this. They see the EOF and
don't bother looking at the strbuf. Or they notice that
sb->len is empty, and don't look at the contents. But
there's at least one case that does neither, and relies on
parsing the resulting (possibly zero-length) string:
fast-import. You can see this in action with the new test
(though we probably only notice failure there when run with
--valgrind or ASAN).
We can fix this by unconditionally resetting the strbuf when
we have a buffer after getdelim(). That fixes case 2 above.
Case 1 is probably already fine in practice, but it does not
hurt for us to re-assert our invariants (especially because
we are relying on whatever getdelim() happens to do, which
may vary from platform to platform). Our fix covers that
case, too.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
The xdl_prepare_env() function may initialise an xdlclassifier_t
data structure via xdl_init_classifier(), which allocates memory
to several fields, for example 'rchash', 'rcrecs' and 'ncha'.
If this function later exits due to the failure of xdl_optimize_ctxs(),
then this xdlclassifier_t structure, and the memory allocated to it,
is not cleaned up.
In order to fix the memory leak, insert a call to xdl_free_classifier()
before returning.
Signed-off-by: Ramsay Jones <ramsay@ramsayjones.plus.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
xdiff/xprepare: use the XDF_DIFF_ALG() macro to access flag bits
Commit 307ab20b3 ("xdiff: PATIENCE/HISTOGRAM are not independent option
bits", 19-02-2012) introduced the XDF_DIFF_ALG() macro to access the
flag bits used to represent the diff algorithm requested. In addition,
code which had used explicit manipulation of the flag bits was changed
to use the macros.
However, one example of direct manipulation remains. Update this code to
use the XDF_DIFF_ALG() macro.
Signed-off-by: Ramsay Jones <ramsay@ramsayjones.plus.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Simplify the two callback functions that are triggered when the
child process terminates to avoid misuse of the child-process
structure that has already been cleaned up.
* sb/submodule-parallel-fetch:
run-command: do not pass child process data into callbacks
* nd/i18n-2.8.0:
trailer.c: mark strings for translation
ref-filter.c: mark strings for translation
builtin/clone.c: mark strings for translation
builtin/checkout.c: mark strings for translation
The code to read the pack data using the offsets stored in the pack
idx file has been made more carefully check the validity of the
data in the idx.
* jk/pack-idx-corruption-safety:
sha1_file.c: mark strings for translation
use_pack: handle signed off_t overflow
nth_packed_object_offset: bounds-check extended offset
t5313: test bounds-checks of corrupted/malicious pack/idx files
t5510 carefully keeps the cwd at the test root by using either subshells
or explicit cd'ing back to the root. Use a subshell for the last
subtest, too.
Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Commit d53c2c6 (mingw: fix t9700's assumption about
directory separators, 2016-01-27) uses perl's "/r" regex
modifier to do a non-destructive replacement on a string,
leaving the original unmodified and returning the result.
This feature was introduced in perl 5.14, but systems with
older perl are still common (e.g., CentOS 6.5 still has perl
5.10). Let's work around it by providing a helper function
that does the same thing using older syntax.
While we're at it, let's switch to using an alternate regex
separator, which is slightly more readable.
Reported-by: Christian Couder <christian.couder@gmail.com> Helped-by: Dennis Kaarsemaker <dennis@kaarsemaker.net> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
index-pack: add a helper function to derive .idx/.keep filename
These are automatically named by replacing .pack suffix in the
name of the packfile. Add a small helper to do so, as I'll be
adding another one soonish.
When 592ce208 (index-pack: use strip_suffix to avoid magic numbers,
2014-06-30) refactored the code to derive names of .idx and .keep
files from the name of .pack file, a copy-and-paste typo crept in,
mistakingly attempting to create and store the keep message file in
the .idx file we just created, instead of .keep file.
As we create the .keep file with O_CREAT|O_EXCL, and we do so after
we write the .idx file, we luckily do not clobber the .idx file, but
because we deliberately ignored EEXIST when creating .keep file
(which is justifiable because only the existence of .keep file
matters), nobody noticed this mistake so far.
t0001: fix GIT_* environment variable check under --valgrind
When a test case is run without --valgrind, the wrap-for-bin.sh
helper script inserts the environment variable GIT_TEXTDOMAINDIR, but
when run with --valgrind, the variable is missing. A recently
introduced test case expects the presence of the variable, though, and
fails under --valgrind.
Rewrite the test case to strip conditially defined environment variables
from both expected and actual output.
Signed-off-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
The wording is introduced in c3f0baaca (Documentation: sync git.txt
command list and manual page title, 2007-01-18), but rebase has evolved
since then, capture the modern usage by being more generic about the
rebase command in the summary.
Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
The pthread_exit() function is not expected to return. Ever. On Windows,
we call ExitThread() whose documentation claims: "Ends the calling
thread", i.e. there is no condition in which this function simply
returns: https://msdn.microsoft.com/en-us/library/windows/desktop/ms682659
While at it, fix the return type to be void, as per
http://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_exit.html
Pointed out by Jeff King, helped by Stefan Naewe, Junio Hamano &
Johannes Sixt.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Commit 58f2ed0 (remote-curl: pass ref SHA-1 to fetch-pack as well,
2013-12-05) added support for specifying a SHA-1 as well as a ref name.
Add support for specifying just a SHA-1 and set the ref name to the same
value in this case.
Signed-off-by: Gabriel Souza Franco <gabrielfrancosouza@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
The values defined by the macro EXC_FLAG_* (1, 4, 8, 16) are stored
in fields of the structs "pattern" and "exclude", some functions
arguments and a local variable. None of these uses its most
significant bit in any special way and there is no good reason to
use a signed integer for them.
And while we're at it, document "flags" of "exclude" to explicitly
state the values it's supposed to take on.
Signed-off-by: Saurav Sachidanand <sauravsachidanand@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
lockfile: improve error message when lockfile exists
A common mistake leading a user to see this message is to launch "git
commit", let the editor open (and forget about it), and try again to
commit.
The previous message was going too quickly to "a git process crashed"
and to the advice "remove the file manually".
This patch modifies the message in two ways: first, it considers that
"another process is running" is the norm, not the exception, and it
explicitly hints the user to look at text editors.
The message is 2 lines longer, but this is not a problem since
experienced users do not see the message often.
Helped-by: Moritz Neeb <lists@moritzneeb.de> Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>
run-command: do not pass child process data into callbacks
The expected way to pass data into the callback is to pass them via
the customizable callback pointer. The error reporting in
default_{start_failure, task_finished} is not user friendly enough, that
we want to encourage using the child data for such purposes.
Furthermore the struct child data is cleaned by the run-command API,
before we access them in the callbacks, leading to use-after-free
situations.
Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Before commit 372370f (http: use credential API to handle proxy auth...),
Environment variable "no_proxy" will take effect if the config variable
"http.proxy" is not set. So the following comamnd won't fail if not
behind a firewall.
But commit 372370f not only read git config variable "http.proxy", but
also read "http_proxy" and "https_proxy" environment variables, and set
the curl option using:
Commit 50a6c8e (use st_add and st_mult for allocation size
computation, 2016-02-22) fixed up many xmalloc call-sites
including ones in compat/mingw.c.
But I screwed up one of them, which was half-converted to
ALLOC_ARRAY, using a very early prototype of the function.
And I never caught it because I don't build on Windows.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
rev-parse: let some options run outside repository
Once upon a time, you could use "--local-env-vars" and
"--resolve-git-dir" outside of any git repository, but they
had to come first on the command line. Commit 68889b4
(rev-parse: remove restrictions on some options, 2013-07-21)
put them into the normal option-parsing loop, fixing the
latter. But it inadvertently broke the former, as we call
setup_git_directory() before starting that loop.
We can note that those options don't care even conditionally
about whether we are in a git repo. So it's fine if we
simply wait to setup the repo until we see an option that
needs it.
However, there is one special exception we should make:
historically, rev-parse will set up the repository and read
config even if there are _no_ options. Some of the
tests in t1300 rely on this to check "git -c $config"
parsing. That's not mirroring real-world use, and we could
tweak the test. But t0002 uses a bare "git rev-parse" to
check "are we in a git repository?". It's plausible that
real-world scripts are relying on this.
So let's cover this case specially, and treat an option-less
"rev-parse" as "see if we're in a repo".
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Gcc under Mac OX 10.6 throws an internal compiler error:
CC combine-diff.o
combine-diff.c: In function ‘diff_tree_combined’:
combine-diff.c:1391: internal compiler error: Segmentation fault
while attempting to build Git at 5b442c4f (tree-diff: catch integer
overflow in combine_diff_path allocation, 2016-02-19).
As clang that ships with the version does not have the same bug,
make Git compile under Mac OS X 10.6 by using clang instead of gcc
to work this around, as it is unlikely that we will see fixed GCC
on that platform.
Later versions of Mac OSX/Xcode only provide clang, and gcc is a
wrapper to it.
Signed-off-by: Torsten Bögershausen <tboegi@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
--get does not fail if a key is multi-valued, it returns the last value
as described in its documentation. Clarify the description of --get-all
to avoid implying that --get does fail in this case.
Signed-off-by: John Keeping <john@keeping.me.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Documentation/git-config: use bulleted list for exit codes
Using a numbered list is confusing because the exit codes are not listed
in order so the numbers at the start of each line do not match the exit
codes described by the following text. Switch to a bulleted list so
that the only number appearing on each line is the exit code described.
Signed-off-by: John Keeping <john@keeping.me.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
The --get, --get-all and --get-regexp options to git-config exit with
status 1 if the key is not found but --get-urlmatch succeeds in this
case.
Change --get-urlmatch to behave in the same way as the other --get*
options so that all four are consistent. --get-color is a special case
because it accepts a default value to return and so should not return an
error if the key is not found.
Also clarify this behaviour in the documentation.
Signed-off-by: John Keeping <john@keeping.me.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
t1515: add tests for rev-parse out-of-repo helpers
The git-rev-parse command is a dumping ground for helpers
that let scripts make various queries of git. Many of these
are conceptually independent of being inside a git
repository.
With the exception of --parseopt, we do not directly test
most of these features in our test suite. Let's give them
some basic sanity checks, which reveals that some of them
have been broken for some time when run from outside a
repository.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
README has been renamed to README.md and its contents got tweaked
slightly to make it easier on the eyes.
* mm/readme-markdown:
README.md: move down historical explanation about the name
README.md: don't call git stupid in the title
README.md: move the link to git-scm.com up
README.md: add hyperlinks on filenames
README: use markdown syntax
"git config section.var value" to set a value in per-repository
configuration file failed when it was run outside any repository,
but didn't say the reason correctly.
* js/config-set-in-non-repository:
git config: report when trying to modify a non-existing repo config
Handling of errors while writing into our internal asynchronous
process has been made more robust, which reduces flakiness in our
tests.
* jk/epipe-in-async:
t5504: handle expected output from SIGPIPE death
test_must_fail: report number of unexpected signal
fetch-pack: ignore SIGPIPE in sideband demuxer
write_or_die: handle EPIPE in async threads
Across the transition at around Git version 2.0, the user used to
get a pretty loud warning when running "git push" without setting
push.default configuration variable. We no longer warn, given that
the transition is over long time ago.
* mm/push-default-warning:
push: remove "push.default is unset" warning message
When "git submodule update" did not result in fetching the commit
object in the submodule that is referenced by the superproject, the
command learned to retry another fetch, specifically asking for
that commit that may not be connected to the refs it usually
fetches.
* sb/submodule-fetch-nontip:
submodule: try harder to fetch needed sha1 by direct fetching sha1
A helper function "git submodule" uses since v2.7.0 to list the
modules that match the pathspec argument given to its subcommands
(e.g. "submodule add <repo> <path>") has been fixed.
Recent versions of GNU grep are pickier when their input contains
arbitrary binary data, which some of our tests uses. Rewrite the
tests to sidestep the problem.
* jk/grep-binary-workaround-in-test:
t9200: avoid grep on non-ASCII data
t8005: avoid grep on non-ASCII data
The "credential-cache" daemon process used to run in whatever
directory it happened to start in, but this made umount(2)ing the
filesystem that houses the repository harder; now the process
chdir()s to the directory that house its own socket on startup.
* jg/credential-cache-chdir-to-sockdir:
credential-cache--daemon: change to the socket dir on startup
credential-cache--daemon: disallow relative socket path
credential-cache--daemon: refactor check_socket_directory
Many codepaths forget to check return value from git_config_set();
the function is made to die() to make sure we do not proceed when
setting a configuration variable failed.
* ps/config-error:
config: rename git_config_set_or_die to git_config_set
config: rename git_config_set to git_config_set_gently
compat: die when unable to set core.precomposeunicode
sequencer: die on config error when saving replay opts
init-db: die on config errors when initializing empty repo
clone: die on config error in cmd_clone
remote: die on config error when manipulating remotes
remote: die on config error when setting/adding branches
remote: die on config error when setting URL
submodule--helper: die on config error when cloning module
submodule: die on config error when linking modules
branch: die on config error when editing branch description
branch: die on config error when unsetting upstream
branch: report errors in tracking branch setup
config: introduce set_or_die wrappers
Traditionally, the tests that try commands that work on the
contents in the working tree were named with "worktree" in their
filenames, but with the recent addition of "git worktree"
subcommand, whose tests are also named similarly, it has become
harder to tell them apart. The traditional tests have been renamed
to use "work-tree" instead in an attempt to differentiate them.
* mg/work-tree-tests:
tests: rename work-tree tests to *work-tree*
The configuration system has been taught to phrase where it found a
bad configuration variable in a better way in its error messages.
"git config" learnt a new "--show-origin" option to indicate where
the values come from.
* ls/config-origin:
config: add '--show-origin' option to print the origin of a config value
config: add 'origin_type' to config_source struct
rename git_config_from_buf to git_config_from_mem
t: do not hide Git's exit code in tests using 'nul_to_q'
Update various codepaths to avoid manually-counted malloc().
* jk/tighten-alloc: (22 commits)
ewah: convert to REALLOC_ARRAY, etc
convert ewah/bitmap code to use xmalloc
diff_populate_gitlink: use a strbuf
transport_anonymize_url: use xstrfmt
git-compat-util: drop mempcpy compat code
sequencer: simplify memory allocation of get_message
test-path-utils: fix normalize_path_copy output buffer size
fetch-pack: simplify add_sought_entry
fast-import: simplify allocation in start_packfile
write_untracked_extension: use FLEX_ALLOC helper
prepare_{git,shell}_cmd: use argv_array
use st_add and st_mult for allocation size computation
convert trivial cases to FLEX_ARRAY macros
use xmallocz to avoid size arithmetic
convert trivial cases to ALLOC_ARRAY
convert manual allocations to argv_array
argv-array: add detach function
add helpers for allocating flex-array structs
harden REALLOC_ARRAY and xcalloc against size_t overflow
tree-diff: catch integer overflow in combine_diff_path allocation
...
"git merge-tree" used to mishandle "both sides added" conflict with
its own "create a fake ancestor file that has the common parts of
what both sides have added and do a 3-way merge" logic; this has
been updated to use the usual "3-way merge with an empty blob as
the fake common ancestor file" approach used in the rest of the
system.
* jk/no-diff-emit-common:
xdiff: drop XDL_EMIT_COMMON
merge-tree: drop generate_common strategy
merge-one-file: use empty blob for add/add base
The internal API to interact with "remote.*" configuration
variables has been streamlined.
* tg/git-remote:
remote: use remote_is_configured() for add and rename
remote: actually check if remote exits
remote: simplify remote_is_configured()
remote: use parse_config_key
In contrast to apache 2.2, apache 2.4 does not load mod_unixd in its
default configuration (because there are choices). Thus, with the
current config, apache 2.4.10 will not be started and the httpd tests
will not run on distros with default apache config (RedHat type).
Enable mod_unixd to make the httpd tests run. This does not affect
distros negatively which have that config already in their default
(Debian type). httpd tests will run on these before and after this patch.
Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Commit 8bf4bec (add "ok=sigpipe" to test_must_fail and use
it to fix flaky tests, 2015-11-27) taught t5504 to handle
"git push" racily exiting with SIGPIPE rather than failing.
However, one of the tests checks the output of the command,
as well. In the SIGPIPE case, we will not have produced any
output. If we want the test to be truly non-flaky, we have
to accept either output.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
test_must_fail: report number of unexpected signal
If a command is marked as test_must_fail but dies with a
signal, we consider that a problem and report the error to
stderr. However, we don't say _which_ signal; knowing that
can make debugging easier. Let's share as much as we know.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>