With get_main_ref_store() being used inside get_ref_store(),
lookup_ref_store() is only used for submodule code path. Rename to
reflect that and delete dead code.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Given $GIT_DIR and $GIT_COMMON_DIR, files-backend is now in charge of
deciding what goes where (*). The end goal is to pass $GIT_DIR only. A
refs "view" of a linked worktree is a logical ref store that combines
two files backends together.
(*) Not entirely true since strbuf_git_path_submodule() still does path
translation underneath. But that's for another patch.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Keep repo-related path handling in one place. This will make it easier
to add submodule/multiworktree support later.
This automatically adds the "if submodule then use the submodule version
of git_path" to other call sites too. But it does not mean those
operations are submodule-ready. Not yet.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Keep repo-related path handling in one place. This will make it easier
to add submodule/multiworktree support later.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This makes reflog path building consistent, always in the form of
strbuf_git_path(sb, "logs/%s", refname);
It reduces the mental workload a bit in the next patch when that
function call is converted.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
git_path() and friends are going to be killed in files-backend.c in near
future. And because there's a risk with overwriting buffer in
git_path(), let's convert them all to strbuf_git_path(). We'll have
easier time killing/converting strbuf_git_path() then because we won't
have to worry about memory management again.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This is a no-op patch. It prepares the function so that we can release
resources (to be added later in this function) before we return.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Keep repo-related path handling in one place. This will make it easier
to add submodule/multiworktree support later.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
safe_create_dir() can do adjust_shared_perm() internally, and init-db
has always created 'refs' in shared mode since the beginning,
af6e277c5e (git-init-db: initialize shared repositories with --shared -
2005-12-22). So this code looks like extra adjust_shared_perm calls are
unnecessary.
And they are. But let's see why there are here in the first place.
This code was added in 6fb5acfd8f (refs: add methods to init refs db -
2016-09-04). From the diff alone this looks like a faithful refactored
code from init-db.c. But there is a subtle difference:
Between the safe_create_dir() block and adjust_shared_perm() block in
the old init-db.c, we may copy/recreate directories from the repo
template. So it makes sense that adjust_shared_perm() is re-executed
then to fix potential permission screwups.
After 6fb5acfd8f, refs dirs are created after template is copied. Nobody
will change directory permission again. So the extra adjust_shared_perm()
is redudant. Delete them.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
It's not in the diff context, but files_downcast() is called before this
check. If "refs" is NULL, we would have segfaulted before reaching the
check here. And we should never see NULL refs in backend code (frontend
should have caught it).
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Created in 5f3c3a4e6f (files_log_ref_write: new function - 2015-11-10)
but probably never used outside refs-internal.c
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
By having a stricter check in the superproject we catch errors earlier,
instead of spawning a child process to tell us.
Signed-off-by: Stefan Beller <sbeller@google.com>
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Migrate 'is_submodule_modified' to the new porcelain format of
git-status. This conversion attempts to convert faithfully, i.e.
the behavior ought to be exactly the same.
As the output in the parsing only distinguishes between untracked files
and the rest, this is easy to port to the new format, as we only
need to identify untracked files and the rest is handled in the "else"
case.
untracked files are indicated by only a single question mark instead of
two question marks, so the conversion is easy.
Signed-off-by: Stefan Beller <sbeller@google.com>
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Instead of implementing line reading yet again, make use of our beautiful
library function to read one line. By using strbuf_getwholeline instead
of strbuf_read, we avoid having to allocate memory for the entire child
process output at once. That is, we limit maximum memory usage.
Also we can start processing the output as it comes in, no need to
wait for all of it.
Once we know all information that we care about, we can terminate
the child early. In that case we do not care about its exit code as well.
By just closing our side of the pipe the child process will get a SIGPIPE
signal, which it will not report nor do we report it in finish_command,
ac78663b0d (run-command: don't warn on SIGPIPE deaths, 2015-12-29).
Helped-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Stefan Beller <sbeller@google.com>
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The name-hash used for detecting paths that are different only in
cases (which matter on case insensitive filesystems) has been
optimized to take advantage of multi-threading when it makes sense.
* jh/memihash-opt:
name-hash: add test-lazy-init-name-hash to .gitignore
name-hash: add perf test for lazy_init_name_hash
name-hash: add test-lazy-init-name-hash
name-hash: perf improvement for lazy_init_name_hash
hashmap: document memihash_cont, hashmap_disallow_rehash api
hashmap: add disallow_rehash setting
hashmap: allow memihash computation to be continued
name-hash: specify initial size for istate.dir_hash table
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
I should really implement special-handling for a new drop! prefix to
commit messages...
This commit reverts that Pull Request, in preparation for merging in a new
iteration of that work (which looks substantially different from the
previous iteration...).
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Since we will likely be introducing a new hash function at some point,
and that hash function might be longer than 20 bytes, use the constant
GIT_MAX_RAWSZ, which is designed to be suitable for allocations, instead
of GIT_SHA1_RAWSZ. This will ease the transition down the line by
distinguishing between places where we need to allocate memory suitable
for the largest hash from those where we need to handle the current
hash.
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Since we will likely be introducing a new hash function at some point,
and that hash function might be longer than 40 hex characters, use the
constant GIT_MAX_HEXSZ, which is designed to be suitable for
allocations, instead of GIT_SHA1_HEXSZ. This will ease the transition
down the line by distinguishing between places where we need to allocate
memory suitable for the largest hash from those where we need to handle
the current hash.
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Since we will want to transition to a new hash at some point in the
future, and that hash may be larger in size than 160 bits, introduce two
constants that can be used for allocating a sufficient amount of memory.
They can be increased to reflect the largest supported hash size.
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
FreeBSD implements getcwd(3) as a syscall, but falls back to a version
based on readdir(3) if it fails for some reason. The latter requires
permissions to read and execute path components, while the former does
not. That means that if our buffer is too small and we're missing
rights we could get EACCES, but we may succeed with a bigger buffer.
Keep retrying if getcwd(3) indicates lack of permissions until our
buffer can fit PATH_MAX bytes, as that's the maximum supported by the
syscall on FreeBSD anyway. This way we do what we can to be able to
benefit from the syscall, but we also won't loop forever if there is a
real permission issue.
This fixes a regression introduced with 7333ed17 (setup: convert
setup_git_directory_gently_1 et al. to strbuf, 2014-07-28) for paths
longer than 127 bytes with components that miss read or execute
permissions (e.g. 0711 on /home for privacy reasons); we used a fixed
PATH_MAX-sized buffer before.
Reported-by: Zenobiusz Kunegunda <zenobiusz.kunegunda@interia.pl>
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Amend the section which describes how to get a commit summary to show
how do to that with "git show", currently the documentation only shows
how to do that with gitk.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Clarify the test_have_prereq documentation so that it's clear in the
reader's mind when the text says "most common use of this directly"
what the answer to "as opposed to what?" is.
Usually this function isn't used in lieu of using the prerequisite
support built into test_expect_*, mention that explicitly.
This changes documentation that I added in commit
9a897893a7 ("t/README: Document the prereq functions, and 3-arg
test_*", 2010-07-02).
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In an early part of sha1dc/sha1.c, the code checks the endianness of
the target platform by inspecting common CPP macros defined on
big-endian boxes, and sets BIGENDIAN macro to 1. If these common
CPP macros are not defined, the code declares that the target
platform is little endian and does nothing (most notably, it does
not #undef its BIGENDIAN macro).
The code that does so even has this comment
Note that all MSFT platforms are little endian,
so none of these will be defined under the MSC compiler.
and later, the defined-ness of the BIGENDIAN macro is used to switch
the implementation of sha1_load() macro.
One thing the code did not anticipate is that somebody might define
BIGENDIAN macro in some header it includes to 0 on a little-endian
target platform. Because the auto-detection based on common macros
do not touch BIGENDIAN macro when it detects a little-endian target,
such a definition is still valid and then defined-ness test will say
"Ah, BIGENDIAN is defined" and takes the wrong sha1_load().
As this auto-detection logic pretends as if it owns the BIGENDIAN
macro by ignoring the setting that may come from the outside and by
not explicitly unsetting when it decides that it is working for a
little-endian target, solve this problem without breaking that
assumption. Namely, we can rename BIGENDIAN this code uses to
something much less generic, i.e. SHA1DC_BIGENDIAN. For extra
protection, undef the macro on a little-endian target.
It is possible to work it around by instead #undef BIGENDIAN in
the auto-detection code, but a macro (or include) that happens later
in the code can be implemented in terms of BIGENDIAN on Windows and
it is possible that the implementation gets upset when it sees the
CPP macro undef'ed (instead of set to 0). Renaming the private macro
intended to be used only in this file to a less generic name relieves
us from having to worry about that kind of breakage.
Noticed-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
'git {log,diff,...} -S<...> --pickaxe-regex' can segfault as a result
of out-of-bounds memory reads.
diffcore-pickaxe.c:contains() looks for all matches of the given regex
in a buffer in a loop, advancing the buffer pointer to the end of the
last match in each iteration. When we switched to REG_STARTEND in
b7d36ffca (regex: use regexec_buf(), 2016-09-21), we started passing
the size of that buffer to the regexp engine, too. Unfortunately,
this buffer size is never updated on subsequent iterations, and as the
buffer pointer advances on each iteration, this "bufptr+bufsize"
points past the end of the buffer. This results in segmentation
fault, if that memory can't be accessed. In case of 'git log' it can
also result in erroneously listed commits, if the memory past the end
of buffer is accessible and happens to contain data matching the
regex.
Reduce the buffer size on each iteration as the buffer pointer is
advanced, thus maintaining the correct end of buffer location.
Furthermore, make sure that the buffer pointer is not dereferenced in
the control flow statements when we already reached the end of the
buffer.
The new test is flaky, I've never seen it fail on my Linux box even
without the fix, but this is expected according to db5dfa3 (regex:
-G<pattern> feeds a non NUL-terminated string to regexec() and fails,
2016-09-21). However, it did fail on Travis CI with the first (and
incomplete) version of the fix, and based on that commit message I
would expect the new test without the fix to fail most of the time on
Windows.
Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
This topic branch allows us to skip the gettext initialization
when the locale directory does not even exist.
This saves 150ms out of 210ms for a simply `git version` call on
Windows, and it most likely will help scripts that call out to
`git.exe` hundreds of times.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
We newly handle isatty() by special-casing the stdin/stdout/stderr file
descriptors, caching the return value. However, we missed the case where
dup2() overrides the respective file descriptor.
That poses a problem e.g. where the `show` builtin asks for a pager very
early, the `setup_pager()` function sets the pager depending on the
return value of `isatty()` and then redirects stdout. Subsequently,
`cmd_log_init_finish()` calls `setup_pager()` *again*. What should
happen now is that `isatty()` reports that stdout is *not* a TTY and
consequently stdout should be left alone.
Let's override dup2() to handle this appropriately.
This fixes https://github.com/git-for-windows/git/issues/1077
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
The runtime of a simple `git.exe version` call on Windows is currently
dominated by the gettext setup, adding a whopping ~150ms to the ~210ms
total.
Given that this cost is added to each and every git.exe invocation goes
through common-main's invocation of git_setup_gettext(), and given that
scripts have to call git.exe dozens, if not hundreds, of times, this is
a substantial performance penalty.
This is particularly pointless when considering that Git for Windows
ships without localization (to keep the installer's size to a bearable
~34MB): all that time setting up gettext is for naught.
So let's be smart about it and skip setting up gettext if the locale
directory is not even present.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
On Windows, we simply pass a POSIX path to bindtextdomain(), relying on
the current libintl-8.dll implementation to handle that gracefully by
resolving the path relative to the "root" directory inferred from the
location of the .dll file itself.
However, not only does this rely on the custom patches of the gettext
library as shipped with MSYS2 (gettext's own source code is not prepared
to handle POSIX paths on Windows), it also means that Git itself cannot
use the `podir` variable at all because it does not handle absolute
POSIX paths in system_path() correctly, leaving them as-is.
This patch fixes that behavior by always using a GIT_LOCALE_PATH
relative to the (runtime) prefix.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
On Windows, there is no single root directory. And what Git thinks is a
root directory is not a root directory at all: everything is relative to
the location where Git is installed.
To handle this situation better, let's just allow for GIT_TEXTDOMAINDIR
to be a path relative to the (runtime) prefix.
To that end, we have to switch the order in which common-main handles
argv0 and sets up gettext: in order to have access to the runtime
prefix, we need it to be inferred from argv0 already.
This patch also prepares for GIT_LOCALE_PATH to be relative to prefix,
which is the even more important fix.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
This does not (yet) resolve the problem that Strg+T with multiple
selected lines fails to (un)stage them all, but it addresses one of
the reported Ctrl+T issues.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
The gui.recentrepo list may be longer than the maxrecent setting.
Allow extra space to show any extra entries.
In an ideal world, the git gui would limit the number of entries
to the maxrecent setting, however the recentrepo config list may
have been extended outwith the gui, or the maxrecent setting changed
to a reduced value. Further, when testing the gui's recentrepo
logic it is useful to show these extra, but valid, entries.
Signed-off-by: Philip Oakley <philipoakley@iee.org>
When the gui/user selects a repo for display, that repo is brought to
the end of the recentrepo config list. The logic can fail if there are
duplicate old entries for the repo (you cannot unset a single config
entry when duplicates are present).
Similarly, the maxrecentrepo logic could fail if older duplicate entries
are present.
The first commit of this series ({this}~2) fixed the config unsetting
issue. Rather than manipulating a local copy of the $recent list (one
cannot know how many entries were removed), simply re-read it.
We must also catch the error when the attempt to remove the second copy
from the re-read list is performed.
Signed-off-by: Philip Oakley <philipoakley@iee.org>
_get_recentrepo will fail if duplicate invalid entries are present
in the recentrepo config list. The previous commit fixed the
'git config' limitations in _unset_recentrepo by unsetting all config
entries, however this code would fail on the second attempt to unset it.
Refactor the code to pre-sort and de-duplicate the recentrepo list to
avoid a potential second unset attempt.
Signed-off-by: Philip Oakley <philipoakley@iee.org>
The git gui's recent repo list may become contaminated with duplicate
entries. The git gui would barf when attempting to remove one entry.
Remove them all - there is no option within 'git config' to selectively
remove one of the entries.
This issue was reported on the 'Git User' list
(https://groups.google.com/forum/#!topic/git-users/msev4KsQGFc,
Warning: gui.recentrepo has multiply values while executing).
And also by zosrothko as a Git-for-Windows issue
https://github.com/git-for-windows/git/issues/1014.
On startup the gui checks that entries in the recentrepo list are still
valid repos and deletes thoses that are not. If duplicate entries are
present the 'git config --unset' will barf and this prevents the gui
from starting.
Subsequent patches fix other parts of recentrepo logic used for syncing
internal lists with the external .gitconfig.
Reported-by: Alexey Astakhov <asstv7@gmail.com>
Signed-off-by: Philip Oakley <philipoakley@iee.org>
We should not actually expect the first `attrib.exe` in the PATH to
be the one we are looking for. Or that it is in the PATH, for that
matter.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Previously unstaged files can be staged by clicking on them and then
pressing Ctrl+T. Conveniently, the next unstaged file is selected
automatically so that the unstaged files can be staged by repeatedly
pressing Ctrl+T.
When a user hits Ctrl+T one time too many, though, Git GUI used to throw
this exception:
expected number but got ""
expected number but got ""
while executing
"expr {int([lindex [$w tag ranges in_diff] 0])}"
(procedure "toggle_or_diff" line 13)
invoked from within
"toggle_or_diff toggle .vpane.files.workdir.list "
(command bound to event)
Let's just avoid that by skipping the operation when there are no more
files to stage.
This fixes https://github.com/git-for-windows/git/issues/1060
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
A change between versions 2.4.1 and 2.6.0 of the MSYS2 runtime modified
how Cygwin's runtime (and hence Git for Windows' MSYS2 runtime
derivative) handles locales: d16a56306d (Consolidate wctomb/mbtowc calls
for POSIX-1.2008, 2016-07-20).
An unintended side-effect is that "cold-calling" into the POSIX
emulation will start with a locale based on the current code page,
something that Git for Windows is very ill-prepared for, as it expects
to be able to pass a command-line containing non-ASCII characters to the
shell without having those characters munged.
One symptom of this behavior: when `git clone` or `git fetch` shell out
to call `git-upload-pack` with a path that contains non-ASCII
characters, the shell tried to interpret the entire command-line
(including command-line parameters) as executable path, which obviously
must fail.
This fixes https://github.com/git-for-windows/git/issues/1036
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
The fix we introduced in Git for Windows will be made obsolete by a more
general fix that has been already accepted into upstream Git's `next`
branch.
But we still can introduce a regression test that verifies that this bug
will be caught very quickly, if reintroduced.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Teach FSCACHE to remember "not found" directories.
This is a performance optimization.
FSCACHE is a performance optimization available for Windows. It
intercepts Posix-style lstat() calls into an in-memory directory
using FindFirst/FindNext. It improves performance on Windows by
catching the first lstat() call in a directory, using FindFirst/
FindNext to read the list of files (and attribute data) for the
entire directory into the cache, and short-cut subsequent lstat()
calls in the same directory. This gives a major performance
boost on Windows.
However, it does not remember "not found" directories. When STATUS
runs and there are missing directories, the lstat() interception
fails to find the parent directory and simply return ENOENT for the
file -- it does not remember that the FindFirst on the directory
failed. Thus subsequent lstat() calls in the same directory, each
re-attempt the FindFirst. This completely defeats any performance
gains.
This can be seen by doing a sparse-checkout on a large repo and
then doing a read-tree to reset the skip-worktree bits and then
running status.
This change reduced status times for my very large repo by 60%.
Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
git-gui tries to temporary set GIT_DIR for starting gitk and restore
it back after they are started. But in case of GIT_DIR which was not set
prior to invocation it is not unset after it. This affects commands
which can be later started from that git gui, for example "Git Bash".
Fix it.
Signed-off-by: Max Kirillov <max@max630.net>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
