If an explicit GIT_DIR is given without a working tree, we
implicitly assume that the current working directory should
be used as the working tree. E.g.,:
GIT_DIR=/some/repo.git git status
would compare against the cwd.
Unfortunately, we fool this rule for sub-invocations of git
by setting GIT_DIR internally ourselves. For example:
git init foo
cd foo/.git
git status ;# fails, as we expect
git config alias.st status
git status ;# does not fail, but should
What happens is that we run setup_git_directory when doing
alias lookup (since we need to see the config), set GIT_DIR
as a result, and then leave GIT_WORK_TREE blank (because we
do not have one). Then when we actually run the status
command, we do setup_git_directory again, which sees our
explicit GIT_DIR and uses the cwd as an implicit worktree.
It's tempting to argue that we should be suppressing that
second invocation of setup_git_directory, as it could use
the values we already found in memory. However, the problem
still exists for sub-processes (e.g., if "git status" were
an external command).
You can see another example with the "--bare" option, which
sets GIT_DIR explicitly. For example:
git init foo
cd foo/.git
git status ;# fails
git --bare status ;# does NOT fail
We need some way of telling sub-processes "even though
GIT_DIR is set, do not use cwd as an implicit working tree".
We could do it by putting a special token into
GIT_WORK_TREE, but the obvious choice (an empty string) has
some portability problems.
Instead, we add a new boolean variable, GIT_IMPLICIT_WORK_TREE,
which suppresses the use of cwd as a working tree when
GIT_DIR is set. We trigger the new variable when we know we
are in a bare setting.
The variable is left intentionally undocumented, as this is
an internal detail (for now, anyway). If somebody comes up
with a good alternate use for it, and once we are confident
we have shaken any bugs out of it, we can consider promoting
it further.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The GIT_PREFIX variable is set based on our location within
the working tree. It should therefore be cleared whenever
GIT_WORK_TREE is cleared.
In practice, this doesn't cause any bugs, because none of
the sub-programs we invoke with local_repo_env cleared
actually care about GIT_PREFIX. But this is the right thing
to do, and future proofs us against that assumption changing.
While we're at it, let's define a GIT_PREFIX_ENVIRONMENT
macro; this avoids repetition of the string literal, which
can help catch any spelling mistakes in the code.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
An earlier workaround designed to help people who list logical
directories that will not match what getcwd(3) returns in the
GIT_CEILING_DIRECTORIES had an adverse effect when it is slow to
stat and readlink a directory component of an element listed on it.
* mh/maint-ceil-absolute:
Provide a mechanism to turn off symlink resolution in ceiling paths
Commit 1b77d83cab 'setup_git_directory_gently_1(): resolve symlinks
in ceiling paths' changed the setup code to resolve symlinks in the
entries in GIT_CEILING_DIRECTORIES. Because those entries are
compared textually to the symlink-resolved current directory, an
entry in GIT_CEILING_DIRECTORIES that contained a symlink would have
no effect. It was known that this could cause performance problems
if the symlink resolution *itself* touched slow filesystems, but it
was thought that such use cases would be unlikely. The intention of
the earlier change was to deal with a case when the user has this:
GIT_CEILING_DIRECTORIES=/home/gitster
but in reality, /home/gitster is a symbolic link to somewhere else,
e.g. /net/machine/home4/gitster. A textual comparison between the
specified value /home/gitster and the location getcwd(3) returns
would not help us, but readlink("/home/gitster") would still be
fast.
After this change was released, Anders Kaseorg <andersk@mit.edu>
reported:
> [...] my computer has been acting so slow when I’m not connected to
> the network. I put various network filesystem paths in
> $GIT_CEILING_DIRECTORIES, such as
> /afs/athena.mit.edu/user/a/n/andersk (to avoid hitting its parents
> /afs/athena.mit.edu, /afs/athena.mit.edu/user/a, and
> /afs/athena.mit.edu/user/a/n which all live in different AFS
> volumes). Now when I’m not connected to the network, every
> invocation of Git, including the __git_ps1 in my shell prompt, waits
> for AFS to timeout.
To allow users to work around this problem, give them a mechanism to
turn off symlink resolution in GIT_CEILING_DIRECTORIES entries. All
the entries that follow an empty entry will not be checked for symbolic
links and used literally in comparison. E.g. with these:
GIT_CEILING_DIRECTORIES=:/foo/bar:/xyzzy or
GIT_CEILING_DIRECTORIES=/foo/bar::/xyzzy
we will not readlink("/xyzzy") because it comes after an empty entry.
With the former (but not with the latter), "/foo/bar" comes after an
empty entry, and we will not readlink it, either.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When giving arguments without "--" disambiguation, object names
that come earlier on the command line must not be interpretable as
pathspecs and pathspecs that come later on the command line must
not be interpretable as object names. Tweak the disambiguation
rule so that ":/" (no other string before or after) is always
interpreted as a pathspec, to avoid having to say "git cmd -- :/".
* nd/magic-pathspec-from-root:
grep: avoid accepting ambiguous revision
Update :/abc ambiguity check
Add a new command "git check-ignore" for debugging .gitignore
files.
The variable names may want to get cleaned up but that can be done
in-tree.
* as/check-ignore:
clean.c, ls-files.c: respect encapsulation of exclude_list_groups
t0008: avoid brace expansion
add git-check-ignore sub-command
setup.c: document get_pathspec()
add.c: extract new die_if_path_beyond_symlink() for reuse
add.c: extract check_path_for_gitlink() from treat_gitlinks() for reuse
pathspec.c: rename newly public functions for clarity
add.c: move pathspec matchers into new pathspec.c for reuse
add.c: remove unused argument from validate_pathspec()
dir.c: improve docs for match_pathspec() and match_pathspec_depth()
dir.c: provide clear_directory() for reclaiming dir_struct memory
dir.c: keep track of where patterns came from
dir.c: use a single struct exclude_list per source of excludes
Conflicts:
builtin/ls-files.c
dir.c
:/abc may mean two things:
- as a revision, it means the revision that has "abc" in commit
message.
- as a pathpec, it means "abc" from root.
Currently we see ":/abc" as a rev (most of the time), but never see it
as a pathspec even if "abc" exists and "git log :/abc" will gladly
take ":/abc" as rev even it's ambiguous. This patch makes it:
- ambiguous when "abc" exists on worktree
- a rev if abc does not exist on worktree
- a path if abc is not found in any commits (although better use
"--" to avoid ambiguation because searching through commit DAG is
expensive)
A plus from this patch is, because ":/" never matches anything as a
rev, it is never considered a valid rev and because root directory
always exists, ":/" is always unambiguously seen as a pathspec.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Since we have just created a new pathspec-handling library, now is a
good time to add some comments explaining get_pathspec().
Signed-off-by: Adam Spiers <git@adamspiers.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
longest_ancestor_length() relies on a textual comparison of directory
parts to find the part of path that overlaps with one of the paths in
prefix_list. But this doesn't work if any of the prefixes involves a
symbolic link, because the directories will look different even though
they might logically refer to the same directory. So canonicalize the
paths listed in GIT_CEILING_DIRECTORIES using real_path_if_valid()
before passing them to longest_ancestor_length(). (Also rename
normalize_ceiling_entry() to canonicalize_ceiling_entry() to reflect
the change.)
path is already in canonical form, so doesn't need to be canonicalized
again.
This fixes some problems with using GIT_CEILING_DIRECTORIES that
contains paths involving symlinks, including t4035 if run with --root
set to a path involving symlinks.
Please note that test t0060 is *not* changed analogously, because that
would make the test suite results dependent on the contents of the
local root directory. However, real_path() is already tested
independently, and the "ancestor" tests cover the non-normalization
aspects of longest_ancestor_length(), so coverage remains sufficient.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Jeff King <peff@peff.net>
Move the responsibility for normalizing prefixes from
longest_ancestor_length() to its callers. Use slightly different
normalizations at the two callers:
In setup_git_directory_gently_1(), use the old normalization, which
ignores paths that are not usable. In the next commit we will change
this caller to also resolve symlinks in the paths from
GIT_CEILING_DIRECTORIES as part of the normalization.
In "test-path-utils longest_ancestor_length", use the old
normalization, but die() if any paths are unusable. Also change t0060
to only pass normalized paths to the test program (no empty entries or
non-absolute paths, strip trailing slashes from the paths, and remove
tests that thereby become redundant).
The point of this change is to reduce the scope of the ancestor_length
tests in t0060 from testing normalization+longest_prefix to testing
only mostly longest_prefix. This is necessary because when
setup_git_directory_gently_1() starts resolving symlinks as part of
its normalization, it will not be reasonable to do the same in the
test suite, because that would make the test results depend on the
contents of the root directory of the filesystem on which the test is
run. HOWEVER: under Windows, bash mangles arguments that look like
absolute POSIX paths into DOS paths. So we have to retain the level
of normalization done by normalize_path_copy() to convert the
bash-mangled DOS paths (which contain backslashes) into paths that use
forward slashes.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Jeff King <peff@peff.net>
Change longest_ancestor_length() to take the prefixes argument as a
string_list rather than as a colon-separated string. This will make
it easier for the caller to alter the entries before calling
longest_ancestor_length().
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Jeff King <peff@peff.net>
* maint-1.7.11:
Almost 1.7.11.6
gitweb: URL-decode $my_url/$my_uri when stripping PATH_INFO
rebase -i: use full onto sha1 in reflog
sh-setup: protect from exported IFS
receive-pack: do not leak output from auto-gc to standard output
t/t5400: demonstrate breakage caused by informational message from prune
setup: clarify error messages for file/revisions ambiguity
send-email: improve RFC2047 quote parsing
fsck: detect null sha1 in tree entries
do not write null sha1s to on-disk index
diff: do not use null sha1 as a sentinel value
When the user gives an argument that can be taken as both a revision
name and a pathname without disambiguating with "--", we used to
give a help message "Use '--' to separate". The message has been
clarified to show where that '--' goes on the command line.
* mm/die-with-dashdash-help:
setup: clarify error messages for file/revisions ambiguity
The previous "Use '--' to separate filenames from revisions" may sound
obvious for an old-time Unix user, but does not make it clear how to use
this '--'. In addition to mentionning this '--', give an idea of what the
new command should look like.
Ideally, we could provide cut-and-paste ready commands based on the
command that just failed, but we have no easy access to argv[] in this
place of the code.
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Teaches the object name parser things like a "git describe" output
is always a commit object, "A" in "git log A" must be a committish,
and "A" and "B" in "git log A...B" both must be committish, etc., to
prolong the lifetime of abbreviated object names.
* jc/sha1-name-more: (27 commits)
t1512: match the "other" object names
t1512: ignore whitespaces in wc -l output
rev-parse --disambiguate=<prefix>
rev-parse: A and B in "rev-parse A..B" refer to committish
reset: the command takes committish
commit-tree: the command wants a tree and commits
apply: --build-fake-ancestor expects blobs
sha1_name.c: add support for disambiguating other types
revision.c: the "log" family, except for "show", takes committish
revision.c: allow handle_revision_arg() to take other flags
sha1_name.c: introduce get_sha1_committish()
sha1_name.c: teach lookup context to get_sha1_with_context()
sha1_name.c: many short names can only be committish
sha1_name.c: get_sha1_1() takes lookup flags
sha1_name.c: get_describe_name() by definition groks only commits
sha1_name.c: teach get_short_sha1() a commit-only option
sha1_name.c: allow get_short_sha1() to take other flags
get_sha1(): fix error status regression
sha1_name.c: restructure disambiguation of short names
sha1_name.c: correct misnamed "canonical" and "res"
...
"git diff --no-index" did not correctly handle relative paths and
did not correctly give exit codes when run under "--quiet" option.
* th/diff-no-index-fixes:
diff-no-index: exit(1) if 'diff --quiet <repo file> <external file>' finds changes
diff: handle relative paths in no-index
"git diff COPYING HEAD:COPYING" gave a nonsense error message that
claimed that the treeish HEAD did not have COPYING in it.
* mm/verify-filename-fix:
verify_filename(): ask the caller to chose the kind of diagnosis
sha1_name: do not trigger detailed diagnosis for file arguments
"git diff --no-index" did not correctly handle relative paths and
did not give correct exit codes when run under "--quiet" option.
* th/diff-no-index-fixes:
diff-no-index: exit(1) if 'diff --quiet <repo file> <external file>' finds changes
diff: handle relative paths in no-index
The only external caller is setup.c that tries to give a nicer error
message when an object name is misspelt (e.g. "HEAD:cashe.h").
Retire it and give the caller a dedicated and more intuitive API
function maybe_die_on_misspelt_object_name().
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When diff-no-index is given a relative path to a file outside the
repository, it aborts with error. However, if the file is given
using an absolute path, the diff runs as expected. The two cases
should be treated the same.
Tests and commit message by Tim Henigan.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Tim Henigan <tim.henigan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
verify_filename() can be called in two different contexts. Either we
just tried to interpret a string as an object name, and it fails, so
we try looking for a working tree file (i.e. we finished looking at
revs that come earlier on the command line, and the next argument
must be a pathname), or we _know_ that we are looking for a
pathname, and shouldn't even try interpreting the string as an
object name.
For example, with this change, we get:
$ git log COPYING HEAD:inexistant
fatal: HEAD:inexistant: no such path in the working tree.
Use '-- <path>...' to specify paths that do not exist locally.
$ git log HEAD:inexistant
fatal: Path 'inexistant' does not exist in 'HEAD'
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Various failure modes in the repository detection code path currently
quote the wrong directory in their error message. The working directory
is changed iteratively to the parent directory until a git repository is
found. If the working directory cannot be changed to the parent
directory for some reason, the detection gives up and prints an error
message. The error message should report the current working directory.
Instead of continually updating the 'cwd' variable, which is actually
used to remember the original working directory, the 'offset' variable
is used to keep track of the current working directory. At the point
where the affected error handling code is called, 'offset' already
points to the end of the parent of the working directory, rather than
the current working directory.
Fix this by explicitly using a variable 'offset_parent' and update
'offset' concurrently with the call to chdir.
In a similar fashion, the function get_device_or_die() would print the
original working directory in case of a failure, rather than the current
working directory. Fix this as well by making use of the 'offset'
variable.
Lastly, replace the phrase 'mount parent' with 'mount point'. The former
appears to be a typo.
Signed-off-by: Clemens Buchacher <drizzd@aon.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When you specify a local repository on the command line of
clone, ls-remote, upload-pack, receive-pack, or upload-archive,
or in a request to git-daemon, we perform a little bit of
lookup magic, doing things like looking in working trees for
.git directories and appending ".git" for bare repos.
For clone, this magic happens in get_repo_path. For
everything else, it happens in enter_repo. In both cases,
there are some ambiguous or confusing cases that aren't
handled well, and there is one case that is not handled the
same by both methods.
This patch tries to provide (and test!) standard, sensible
lookup rules for both code paths. The intended changes are:
1. When looking up "foo", we have always preferred
a working tree "foo" (containing "foo/.git" over the
bare "foo.git". But we did not prefer a bare "foo" over
"foo.git". With this patch, we do so.
2. We would select directories that existed but didn't
actually look like git repositories. With this patch,
we make sure a selected directory looks like a git
repo. Not only is this more sensible in general, but it
will help anybody who is negatively affected by change
(1) negatively (e.g., if they had "foo.git" next to its
separate work tree "foo", and expect to keep finding
"foo.git" when they reference "foo").
3. The enter_repo code path would, given "foo", look for
"foo.git/.git" (i.e., do the ".git" append magic even
for a repo with working tree). The clone code path did
not; with this patch, they now behave the same.
In the unlikely case of a working tree overlaying a bare
repo (i.e., a ".git" directory _inside_ a bare repo), we
continue to treat it as a working tree (prefering the
"inner" .git over the bare repo). This is mainly because the
combination seems nonsensical, and I'd rather stick with
existing behavior on the off chance that somebody is relying
on it.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* cb/common-prefix-unification:
rename pathspec_prefix() to common_prefix() and move to dir.[ch]
consolidate pathspec_prefix and common_prefix
remove prefix argument from pathspec_prefix
Also make common_prefix_len() static as this refactoring makes dir.c
itself the only caller of this helper function.
Signed-off-by: Clemens Buchacher <drizzd@aon.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The implementation from pathspec_prefix (slightly modified) replaces the
current common_prefix, because it also respects glob characters.
Based on a patch by Clemens Buchacher.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Passing a prefix to a function that is supposed to find the prefix is
strange. And it's really only used if the pathspec is NULL. Make the
callers handle this case instead.
As we are always returning a fresh copy of a string (or NULL), change the
type of the returned value to non-const "char *".
Signed-off-by: Clemens Buchacher <drizzd@aon.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The function was not gentle at all to the callers and died without giving
them a chance to deal with possible errors. Rename it to read_gitfile(),
and update all the callers.
As no existing caller needs a true "gently" variant, we do not bother
adding one at this point.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Check if <path> is a valid git-dir or a valid git-file that points
to a valid git-dir.
We want tests to be independent from the fact that a git-dir may
be a git-file. Thus we changed tests to use this feature.
Signed-off-by: Fredrik Gustafsson <iveqy@iveqy.com>
Mentored-by: Jens Lehmann <Jens.Lehmann@web.de>
Mentored-by: Heiko Voigt <hvoigt@hvoigt.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Currently parse-options.o pulls quite a big bunch of dependencies.
his complicates it's usage in contrib/ because it pulls external
dependencies and it also increases executables size.
Split off less generic and more internal to git part of
parse-options.c to parse-options-cb.c.
Move prefix_filename function from setup.c to abspath.c. abspath.o
and wrapper.o pull each other, so it's unlikely to increase the
dependencies. It was a dependency of parse-options.o that pulled
many others.
Now parse-options.o pulls just abspath.o, ctype.o, strbuf.o, usage.o,
wrapper.o, libc directly and strlcpy.o indirectly.
Signed-off-by: Dmitry Ivankov <divanorama@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In order to do partial commits, git-commit overlays a tree on the
cache and checks pathspecs against the result. Currently, the
overlaying is done using "prefix" which prevents relative pathspecs
with ".." and absolute pathspec from matching when they refer to
files not under "prefix" and absent from the index, but still in
the tree (i.e. files staged for removal).
The point of providing a prefix at all is performance optimization.
If we say there is no common prefix for the files of interest, then
we have to read the entire tree into the index.
But even if we cannot use the working directory as a prefix, we can
still figure out if there is a common prefix for all given paths,
and use that instead. The pathspec_prefix() routine from ls-files.c
does exactly that.
Any use of global variables is removed from pathspec_prefix() so
that it can be called from commit.c.
Reported-by: Reuben Thomas <rrt@sc3d.org>
Analyzed-by: Michael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: Clemens Buchacher <drizzd@aon.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* da/git-prefix-everywhere:
t/t7503-pre-commit-hook.sh: Add GIT_PREFIX tests
git-mergetool--lib: Make vimdiff retain the current directory
git: Remove handling for GIT_PREFIX
setup: Provide GIT_PREFIX to built-ins
* maint:
git-submodule.sh: separate parens by a space to avoid confusing some shells
Documentation/technical/api-diff.txt: correct name of diff_unmerge()
read_gitfile_gently: use ssize_t to hold read result
remove tests of always-false condition
rerere.c: diagnose a corrupt MERGE_RR when hitting EOF between TAB and '\0'
* jm/maint-misc-fix:
read_gitfile_gently: use ssize_t to hold read result
remove tests of always-false condition
rerere.c: diagnose a corrupt MERGE_RR when hitting EOF between TAB and '\0'
GIT_PREFIX was added in 7cf16a14f5 so that
aliases can know the directory from which a !alias was called.
Knowing the prefix relative to the root is helpful in other programs
so export it to built-ins as well.
Helped-by: Michael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Otherwise, a negative error return becomes a very large read
value. We catch this in practice because we compare the
expected and actual numbers of bytes (and you are not likely
to be reading (size_t)-1 bytes), but this makes the
correctness a little more obvious.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* jc/magic-pathspec:
setup.c: Fix some "symbol not declared" sparse warnings
t3703: Skip tests using directory name ":" on Windows
revision.c: leave a note for "a lone :" enhancement
t3703, t4208: add test cases for magic pathspec
rev/path disambiguation: further restrict "misspelled index entry" diag
fix overslow :/no-such-string-ever-existed diagnostics
fix overstrict :<path> diagnosis
grep: use get_pathspec() correctly
pathspec: drop "lone : means no pathspec" from get_pathspec()
Revert "magic pathspec: add ":(icase)path" to match case insensitively"
magic pathspec: add ":(icase)path" to match case insensitively
magic pathspec: futureproof shorthand form
magic pathspec: add tentative ":/path/from/top/level" pathspec support
In particular, sparse issues the "symbol 'a_symbol' was not declared.
Should it be static?" warnings for the following symbols:
setup.c:159:3: 'pathspec_magic'
setup.c:176:12: 'prefix_pathspec'
These symbols only require file scope, so we add the static modifier
to their declarations.
Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
A colon followed by anything !isalnum() (e.g. ":/heh") at this point is
known not to be an existing rev. Just give a generic "neither a rev nor
a path" error message.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git cmd :/no-such-string-ever-existed" runs an extra round of get_sha1()
since 009fee4 (Detailed diagnosis when parsing an object name fails.,
2009-12-07). Once without error diagnosis to see there is no commit with
such a string in the log message (hence "it cannot be a ref"), and after
seeing that :/no-such-string-ever-existed is not a filename (hence "it
cannot be a path, either"), another time to give "better diagnosis".
The thing is, the second time it runs, we already know that traversing the
history all the way down to the root will _not_ find any matching commit.
Rename misguided "gently" parameter, which is turned off _only_ when the
"detailed diagnosis" codepath knows that it cannot be a ref and making the
call only for the caller to die with a message. Flip its meaning (and
adjust the callers) and call it "only_to_die", which is not a great name,
but it describes far more clearly what the codepaths that switches their
behaviour based on this variable do.
On my box, the command spends ~1.8 seconds without the patch to make the
report; with the patch it spends ~1.12 seconds.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We may want to give the pathspec subsystem such a feature, but not while
we are still using get_pathspec() that returns a stupid "char **" that
loses subtle nuances that existed in the input string.
In the meantime, the callers of get_pathspec() that want to support it
could do an equivalent before feeding their argv[] to the function
themselves quite easily.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This reverts commit d0546e2d48, which
was only meant to be a Proof-of-concept used during the discussion.
The real implementation of the feature needs to wait until we migrate
all the code to use "struct pathspec", not "char **", to represent
richer semantics given to pathspec.
The earlier design was to take whatever non-alnum that the short format
parser happens to support, leaving the rest as part of the pattern, so a
version of git that knows '*' magic and a version that does not would have
behaved differently when given ":*Makefile". The former would have
applied the '*' magic to the pattern "Makefile", while the latter would
used no magic to the pattern "*Makefile".
Instead, just reserve all non-alnum ASCII letters that are neither glob
nor regexp special as potential magic signature, and when we see a magic
that is not supported, die with an error message, just like the longhand
codepath does.
With this, ":%#!*Makefile" will always mean "%#!" magic applied to the
pattern "*Makefile", no matter what version of git is used (it is a
different matter if the version of git supports all of these three magic
matching rules).
Also make ':' without anything else to mean "there is no pathspec". This
would allow differences between "git log" and "git log ." run from the top
level of the working tree (the latter simplifies no-op commits away from
the history) to be expressed from a subdirectory by saying "git log :".
Helped-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Support ":/" magic string that can be prefixed to a pathspec element to
say "this names the path from the top-level of the working tree", when
you are in the subdirectory.
For example, you should be able to say:
$ edit Makefile ;# top-level
$ cd Documentation
$ edit git.txt ;# in the subdirectory
and then do one of three things, still inside the subdirectory:
$ git add -u . ;# add only Documentation/git.txt
$ git add -u :/ ;# add everything, including paths outside Documentation
$ git add -u ;# whatever the default setting is.
To truly support magic pathspec, the API needs to be restructured so that
get_pathspec() and init_pathspec() are unified into one call. Currently,
the former just prefixes the user supplied pathspec with the current
subdirectory path, and the latter takes the output from the former and
pre-parses them into a bit richer structure for easier handling. They
should become a single API function that takes the current subdirectory
path and the remainder of argv[] (after parsing --options and revision
arguments from the command line) and returns an array of parsed pathspec
elements, and "magic" should become attributes of struct pathspec_item.
This patch implements only "top" magic because it can be hacked into the
system without such a refactoring.
The syntax for magic pathspec prefix is designed to be extensible yet
simple to type to invoke a simple magic like "from the top". The parser
for the magic prefix is hooked into get_pathspec() function in this patch,
and it needs to be moved when we refactor the API.
But we have to start from somewhere.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The same old problem reappears after setup code is reworked. We tend
to assume there is at least one path component in a path and forget
that path can be simply '/'.
Reported-by: Matthijs Kooijman <matthijs@stdin.nl>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Rename the make_*_path functions so it's clearer what they do, in
particlar make clear what the differnce between make_absolute_path and
make_nonrelative_path is by renaming them real_path and absolute_path
respectively. make_relative_path has an understandable name and is
renamed to relative_path to maintain the name convention.
The function calls have been replaced 1-to-1 in their usage.
Signed-off-by: Carlos Martín Nieto <cmn@elego.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The original intention of --work-tree was to allow people to work in a
subdirectory of their working tree that does not have an embedded .git
directory. Because their working tree, which their $cwd was in, did not
have an embedded .git, they needed to use $GIT_DIR to specify where it is,
and because this meant there was no way to discover where the root level
of the working tree was, so we needed to add $GIT_WORK_TREE to tell git
where it was.
However, this facility has long been (mis)used by people's scripts to
start git from a working tree _with_ an embedded .git directory, let git
find .git directory, and then pretend as if an unrelated directory were
the associated working tree of the .git directory found by the discovery
process. It happens to work in simple cases, and is not worth causing
"regression" to these scripts.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
otherwise, comparison to validate against work tree will fail when
the path includes a symlink and the name passed is not canonical.
Signed-off-by: Carlo Marcelo Arenas Belon <carenas@sajinet.com.pe>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* nd/setup: (47 commits)
setup_work_tree: adjust relative $GIT_WORK_TREE after moving cwd
git.txt: correct where --work-tree path is relative to
Revert "Documentation: always respect core.worktree if set"
t0001: test git init when run via an alias
Remove all logic from get_git_work_tree()
setup: rework setup_explicit_git_dir()
setup: clean up setup_discovered_git_dir()
t1020-subdirectory: test alias expansion in a subdirectory
setup: clean up setup_bare_git_dir()
setup: limit get_git_work_tree()'s to explicit setup case only
Use git_config_early() instead of git_config() during repo setup
Add git_config_early()
git-rev-parse.txt: clarify --git-dir
t1510: setup case #31
t1510: setup case #30
t1510: setup case #29
t1510: setup case #28
t1510: setup case #27
t1510: setup case #26
t1510: setup case #25
...
When setup_work_tree() is called, it moves cwd to $GIT_WORK_TREE and
makes internal copy of $GIT_WORK_TREE absolute. The environt variable,
if set by user, remains unchanged. If the variable is relative, it is
no longer correct because its base dir has changed.
Instead of making $GIT_WORK_TREE absolute too, we just say "." and let
subsequent git processes handle it.
Reported-by: Michel Briand <michelbriand@free.fr>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This function is the most complex one among the three setup_*
functions because all GIT_DIR, GIT_WORK_TREE, core.worktree and
core.bare are involved.
Because core.worktree is only effective inside
setup_explicit_git_dir() and the extra code in setup_git_directory()
is to handle that. The extra code can now be retired.
Also note that setup_explicit assignment is removed, worktree setting
is no longer decided by get_git_work_tree(). get_git_work_tree() will
be simplified in the next commit.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If core.bare is true, discard the discovered worktree, move back to
original cwd.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
work_tree_env argument is removed because this function does not need
it. GIT_WORK_TREE is only effective inside setup_explicit_git_dir.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
get_git_work_tree() takes input as core.worktree, core.bare,
GIT_WORK_TREE and decides correct worktree setting.
Unfortunately it does not do its job well. core.worktree and
GIT_WORK_TREE should only be taken into account, if GIT_DIR is set
(which is handled by setup_explicit_git_dir). For other setup cases,
only core.bare matters.
Add a temporary variable setup_explicit to adjust get_git_work_tree()
behavior as such. This variable will be gone once setup_* rework is
done.
Also remove is_bare_repository_cfg check in set_git_work_tree() to
ease the rework. We are going to check for core.bare and core.worktree
early before setting worktree. For example, if core.bare is true, no
need to set worktree.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When git_config() is called, either git_dir has already been set (by
$GIT_DIR env or set_git_dir()), or it will default git_dir to ".git".
git_config_early() gives setup functions more freedom because it does
not require git_dir. Give it a config path, it will happily examine
it.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* nd/extended-sha1-relpath:
get_sha1: teach ":$n:<path>" the same relative path logic
get_sha1: support relative path ":path" syntax
Make prefix_path() return char* without const
Conflicts:
sha1_name.c
* jn/parse-options-extra:
update-index: migrate to parse-options API
setup: save prefix (original cwd relative to toplevel) in startup_info
parse-options: make resuming easier after PARSE_OPT_STOP_AT_NON_OPTION
parse-options: allow git commands to invent new option types
parse-options: never suppress arghelp if LITERAL_ARGHELP is set
parse-options: do not infer PARSE_OPT_NOARG from option type
parse-options: sanity check PARSE_OPT_NOARG flag
parse-options: move NODASH sanity checks to parse_options_check
parse-options: clearer reporting of API misuse
parse-options: Don't call parse_options_check() so much
prefix_path() allocates new buffer. There's no reason for it to keep
the buffer for itself and waste memory.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Save the path from the original cwd to the cwd at the end of the
setup procedure in the startup_info struct introduced in e37c1329
(2010-08-05). The value cannot vary from thread to thread anyway,
since the cwd is global.
So now in your builtin command, instead of passing prefix around,
when you want to convert a user-supplied path to a cwd-relative
path, you can use startup_info->prefix directly.
Caveat: As with the return value from setup_git_directory_gently(),
startup_info->prefix would be NULL when the original cwd is not a
subdir of the toplevel.
Longer term, this would allow the prefix to be reused when several
noncooperating functions require access to the same repository (for
example, when accessing configuration before running a builtin).
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Current prefix_filename() is proofed against the case where the prefix
'pfx' is NULL or a 0-length string, _except on Windows_.
Change the behaviour to work the same on both platforms, and only
check pfx_len so that callers passing a NULL prefix with a nonzero
pfx_len segfault early on both.
Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* jn/paginate-fix:
t7006 (pager): add missing TTY prerequisites
merge-file: run setup_git_directory_gently() sooner
var: run setup_git_directory_gently() sooner
ls-remote: run setup_git_directory_gently() sooner
index-pack: run setup_git_directory_gently() sooner
config: run setup_git_directory_gently() sooner
bundle: run setup_git_directory_gently() sooner
apply: run setup_git_directory_gently() sooner
grep: run setup_git_directory_gently() sooner
shortlog: run setup_git_directory_gently() sooner
git wrapper: allow setup_git_directory_gently() be called earlier
setup: remember whether repository was found
git wrapper: introduce startup_info struct
Conflicts:
builtin/index-pack.c
* 'jn/maint-setup-fix' (early part):
Revert "rehabilitate 'git index-pack' inside the object store"
setup: do not forget working dir from subdir of gitdir
t4111 (apply): refresh index before applying patches to it
setup: split off get_device_or_die helper
setup: split off a function to handle hitting ceiling in repo search
setup: split off code to handle stumbling upon a repository
setup: split off a function to checks working dir for .git file
setup: split off $GIT_DIR-set case from setup_git_directory_gently
tests: try git apply from subdir of toplevel
t1501 (rev-parse): clarify
As v1.7.2~16^2 (git --paginate: paginate external commands
again, 2010-07-14) explains, builtins (like git config) that
do not use RUN_SETUP are not finding GIT_DIR set correctly when
it is time to launch the pager from run_builtin(). If they
were to search for a repository sooner, then the outcome of such
early repository accesses would be more predictable and reliable.
The cmd_*() functions learn whether a repository was found through the
*nongit_ok return value from setup_git_directory_gently(). If
run_builtin() is to take care of the repository search itself, that
datum needs to be retrievable from somewhere else. Use the
startup_info struct for this.
As a bonus, this information becomes available to functions such as
git_config() which might want to avoid trying to access a repository
when none is present.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Finish the clean-up of setup_git_directory_gently() by splitting the
last case of validation+setup (global variables, prefix, check_format,
set_git_dir) into its own function. Now setup_git_git_directory_gently
itself takes care of discovery only and the functions that pick up
from there are nearby in the source file so they can be easily
compared.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
v1.6.1.3~4^2 (Fix gitdir detection when in subdir of gitdir,
2009-01-16) did not go far enough: when a git directory is
an ancestor of the original working directory, not only
should GIT_DIR be set to point to the .git directory, but
the original working directory should be restored before
carrying out the relevant command.
This way, the effect of running a git command from a subdir
of .git will be the same whether or not GIT_DIR is explicitly
set.
Noticed while investigating v1.6.0.3~1 (rehabilitate 'git
index-pack' inside the object store, 2008-10-20).
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This does not eliminate any code, but it skims some off of
the main loop of setup_git_directory_gently so that can be
understood more easily.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Perhaps some day, other similar conditions (hitting the mount point,
hitting the root of the file system) will share this code.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If a repository is found as an ancestor of the original
working directory, it is assumed by default to be bare.
Handle this case with its own function.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The repository discovery procedure looks something like this:
while (same filesystem) {
check .git in working dir
check .
chdir(..)
}
Add a function for the first step to make the actual code look a bit
closer to that pseudocode.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If $GIT_DIR is set, setup_git_directory_gently does not have
to do any repository discovery at all. Split off a function
for the validation it still does do, in the hope that this will
make setup_git_directory_gently proper less daunting to read.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This prevents a buffer overrun that could otherwise be triggered by
creating a file called '.git' with contents
gitdir: (something really long)
Signed-off-by: Greg Brockman <gdb@mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The original declaration was int, which seems to cause trouble on my
machine. It causes spurious "filesystem boundary" errors when running
the testsuite. The cause seems to be
$ stat -c%d .
2147549952
which is too large for a 32-bit int type.
Using the correct type, dev_t, solves the issue. (Because I'm
paranoid and forgetful, I checked -- yes, Unix v7 had dev_t.)
Other uses of st_dev seem to be reasonably safe. fill_stat_cache_info
truncates it to an 'unsigned int', but that value seems to be used only
to validate the cache, and only if USE_STDEV is defined.
Signed-off-by: Raja R Harinath <harinath@hurrynot.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If a missing ONE_FILESYSTEM defaults to true, the only users who set this
variable set it to false to tell git not to limit the discovery to one
filesystem; there are too many negations in one sentence to make a simple
panda brain dizzy.
Use the variable GIT_DISCOVERY_ACROSS_FILESYSTEM that changes the
behaviour from the default "limit to one filesystem" to "cross the
boundary as I ask you to"; makes the semantics much more straight
forward.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Regarding the new environment variable, Linus Torvalds
<torvalds@linux-foundation.org> writes on Tue, 30 Mar 2010 in
<alpine.LFD.2.00.1003301537150.3707@i5.linux-foundation.org>:
I suspect that it is _very_ unusual to have a source repo that crosses
multiple filesystems, and the original reason for this patch-series
seems to me to be likely to be more common than that multi-fs case. So
having the logic go the other way would seem to match the common case,
no?
The "crossing filesystem boundary" condition is checked by comparing
st_dev field in the result from stat(2). This is slightly worrysome if
non-POSIX ports return different values in the field even for directories
in the same work tree extracted to the same "filesystem". Erik Faye-Lund
confirms that in the msysgit port st_dev is 0, so this should be safe, as
"even Windows is safe" ;-)
This will affect those who use /.git to cram /etc and /home/me in the same
repostiory, /home is mounted from non-root filesystem, and a git operation
is done from inside /home/me/src. But that is such a corner case we don't
want to give preference over helping people who will benefit from having
this default so that they do not have to suffer from slow automounters.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This patch makes git pay attention to the GIT_ONE_FILESYSTEM environment
variable. When that variable is set, git will stop searching for a
GIT_DIR when it attempts to cross a filesystem boundary.
When working in an environment with too many automount points to make
maintaining a GIT_CEILING_DIRECTORIES list enjoyable, GIT_ONE_FILESYSTEM
gives the option of turning all such attempts off with one setting.
Signed-off-by: Lars R. Damerow <lars@pixar.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Without this truncation the error message printed only shows the cwd
from the start of the search, not where it failed.
Signed-off-by: Lars R. Damerow <lars@pixar.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* nd/root-git:
Add test for using Git at root of file system
Support working directory located at root
Move offset_1st_component() to path.c
init-db, rev-parse --git-dir: do not append redundant slash
make_absolute_path(): Do not append redundant slash
Conflicts:
setup.c
sha1_file.c
Git should work regardless where the working directory is located,
even at root. This patch fixes two places where it assumes working
directory always have parent directory.
In setup_git_directory_gently(), when Git goes up to root and finds
.git there, it happily sets worktree to "" instead of "/".
In prefix_path(), loosen the outside repo check a little bit. Usually
when a path XXX is inside worktree /foo, it must be either "/foo", or
"/foo/...". When worktree is simply "/", we can safely ignore the
check: we have a slash at the beginning already.
Not related to worktree, but also set gitdir correctly if a bare repo
is placed (insanely?) at root.
Thanks João Carlos Mendes Luís for pointing out this problem.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This patch converts the setenv() calls in path.c and setup.c. After
the call, git grep with a pager works again in bare repos.
It leaves the setenv(GIT_DIR_ENVIRONMENT, ...) calls in git.c alone, as
they respond to command line switches that emulate the effect of setting
the environment variable directly.
The remaining site in environment.c is in set_git_dir() and is left
alone, too, of course. Finally, builtin-init-db.c is left changed
because the repo is still being carefully constructed when the
environment variable is set.
This fixes git shortlog when run inside a git directory, which had been
broken by abe549e1.
Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Commit 842abf0 (Teach resolve_gitlink_ref() about the .git file, 2008-02-20)
taught resolve_gitlink_ref() to call read_gitfile_gently() to resolve .git
files. In this commit teach read_gitfile_gently() to interpret a relative
path in a .git file with respect to the file location.
This change allows update-index to recognize a submodule that uses a relative
path in its .git file. It previously failed because the relative path was
wrongly interpreted with respect to the superproject directory.
Signed-off-by: Brad King <brad.king@kitware.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* maint:
Git 1.6.5.7
worktree: don't segfault with an absolute pathspec without a work tree
ignore unknown color configuration
help.autocorrect: do not run a command if the command given is junk
Illustrate "filter" attribute with an example
If a command is run with an absolute path as a pathspec inside a bare
repository, e.g. "rev-list HEAD -- /home", the code tried to run strlen()
on NULL, which is the result of get_git_work_tree(), and segfaulted. It
should just fail instead.
Currently the function returns NULL even inside .git/ in a repository
with a work tree, but that is a separate issue.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The previous error message was the same in many situations (unknown
revision or path not in the working tree). We try to help the user as
much as possible to understand the error, especially with the
sha1:filename notation. In this case, we say whether the sha1 or the
filename is problematic, and diagnose the confusion between
relative-to-root and relative-to-$PWD confusion precisely.
The 7 new error messages are tested.
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Make it possible to invole the logic of verify_filename() to make sure the
pathname arguments are unambiguous without actually dying. The caller may
want to do something different.
The code which is conditional on MinGW32 is actually conditional on Windows.
Use the WIN32 symbol, which is defined by the MINGW32 and MSVC environments,
but not by Cygwin.
Define SNPRINTF_SIZE_CORR=1 for MSVC too, as its vsnprintf function does
not add NUL at the end of the buffer if the result fits the buffer size
exactly.
Signed-off-by: Frank Li <lznuaa@gmail.com>
Signed-off-by: Marius Storm-Olsen <mstormo@gmail.com>
Acked-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Lots of die() calls did not actually report the kind of error, which
can leave the user confused as to the real problem. Use die_errno()
where we check a system/library call that sets errno on failure, or
one of the following that wrap such calls:
Function Passes on error from
-------- --------------------
odb_pack_keep open
read_ancestry fopen
read_in_full xread
strbuf_read xread
strbuf_read_file open or strbuf_read_file
strbuf_readlink readlink
write_in_full xwrite
Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Change calls to die(..., strerror(errno)) to use the new die_errno().
In the process, also make slight style adjustments: at least state
_something_ about the function that failed (instead of just printing
the pathname), and put paths in single quotes.
Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This fixes the behaviour of octal notation to how it is defined in the
documentation, while keeping the traditional "loosen only" semantics
intact for "group" and "everybody".
Three main points of this patch are:
- For an explicit octal notation, the internal shared_repository variable
is set to a negative value, so that we can tell "group" (which is to
"OR" in 0660) and 0660 (which is to "SET" to 0660);
- git-init did not set shared_repository variable early enough to affect
the initial creation of many files, notably copied templates and the
configuration. We set it very early when a command-line option
specifies a custom value.
- Many codepaths create files inside $GIT_DIR by various ways that all
involve mkstemp(), and then call move_temp_to_file() to rename it to
its final destination. We can add adjust_shared_perm() call here; for
the traditional "loosen-only", this would be a no-op for many codepaths
because the mode is already loose enough, but with the new behaviour it
makes a difference.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* js/maint-1.6.0-path-normalize:
Remove unused normalize_absolute_path()
Test and fix normalize_path_copy()
Fix GIT_CEILING_DIRECTORIES on Windows
Move sanitary_path_copy() to path.c and rename it to normalize_path_copy()
Make test-path-utils more robust against incorrect use
This function and normalize_absolute_path() do almost the same thing. The
former already works on Windows, but the latter crashes.
In subsequent changes we will remove normalize_absolute_path(). Here we
make the replacement function reusable. On the way we rename it to reflect
that it does some path normalization. Apart from that this is only moving
around code.
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If the current working directory is a subdirectory of the gitdir (e.g.
<repo>/.git/refs/), then setup_git_directory_gently() will climb its
parent directories until it finds itself in a gitdir. However, no
matter how many parent directories it climbs, it sets
'GIT_DIR_ENVIRONMENT' to ".", which is obviously wrong.
This behaviour affected at least 'git rev-parse --git-dir' and hence
caused some errors in bash completion (e.g. customized command prompt
when on a detached head and completion of refs).
To fix this, we set the absolute path of the found gitdir instead.
Signed-off-by: SZEDER Gábor <szeder@ira.uka.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Unify all
fatal: Not a git repository
error messages so they include path information.
Signed-off-by: Richard Hartmann <richih@net.in.tum.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
There are 9 places where prefix_path is called, and only in one of
them the returned pointer was checked to be non-zero and only to
call exit(128) as it is usually done by die(). In other 8 places,
the returned value was not checked and it caused SIGSEGV when a
path outside of the working tree was used. For instance, running
git update-index --add /some/path/outside
caused SIGSEGV.
This patch changes prefix_path() to die if the path is outside of
the repository, so it never returns NULL.
Signed-off-by: Dmitry Potapov <dpotapov@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
When setup_git_directory() returns successfully, it is supposed to move
current working directory to worktree toplevel directory.
However, the code recomputing prefix inside setup_git_directory() has
to move cwd back to original working directory, in order to get new
prefix. After that, it should move cwd back to worktree toplevel
directory as expected.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* dr/ceiling:
Eliminate an unnecessary chdir("..")
Add support for GIT_CEILING_DIRECTORIES
Fold test-absolute-path into test-path-utils
Implement normalize_absolute_path
Conflicts:
cache.h
setup.c
* j6t/mingw: (38 commits)
compat/pread.c: Add a forward declaration to fix a warning
Windows: Fix ntohl() related warnings about printf formatting
Windows: TMP and TEMP environment variables specify a temporary directory.
Windows: Make 'git help -a' work.
Windows: Work around an oddity when a pipe with no reader is written to.
Windows: Make the pager work.
When installing, be prepared that template_dir may be relative.
Windows: Use a relative default template_dir and ETC_GITCONFIG
Windows: Compute the fallback for exec_path from the program invocation.
Turn builtin_exec_path into a function.
Windows: Use a customized struct stat that also has the st_blocks member.
Windows: Add a custom implementation for utime().
Windows: Add a new lstat and fstat implementation based on Win32 API.
Windows: Implement a custom spawnve().
Windows: Implement wrappers for gethostbyname(), socket(), and connect().
Windows: Work around incompatible sort and find.
Windows: Implement asynchronous functions as threads.
Windows: Disambiguate DOS style paths from SSH URLs.
Windows: A rudimentary poll() emulation.
Windows: Implement start_command().
...
GIT's guts work with a forward slash as a path separators. We do not change
that. Rather we make sure that only "normalized" paths enter the depths
of the machinery.
We have to translate backslashes to forward slashes in the prefix and in
command line arguments. Fortunately, all of them are passed through
functions in setup.c.
A macro has_dos_drive_path() is defined that checks whether a path begins
with a drive letter+colon combination. This predicate is always false on
Unix. Another macro is_dir_sep() abstracts that a backslash is also a
directory separator on Windows.
Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
This turns two switch/case statements into an if-else-if cascade because
we later do not want to have
case '/':
#ifdef __MINGW32__
case '\\':
#endif
but use a predicate is_dir_sep(foo) in order to check for the directory
separator.
Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
Once we find the absolute paths for git_dir and work_tree, we can make
git_dir a relative path since we know pwd will be work_tree. This should
save the kernel some time traversing the path to work_tree all the time
if git_dir is inside work_tree.
Daniel's patch didn't apply for me as-is, so I recreated it with some
differences, and here are the numbers from ten runs each.
There is some IO for me - probably due to more-or-less random flushing of
the journal - so the variation is bigger than I'd like, but whatever:
Before:
real 0m8.135s
real 0m7.933s
real 0m8.080s
real 0m7.954s
real 0m7.949s
real 0m8.112s
real 0m7.934s
real 0m8.059s
real 0m7.979s
real 0m8.038s
After:
real 0m7.685s
real 0m7.968s
real 0m7.703s
real 0m7.850s
real 0m7.995s
real 0m7.817s
real 0m7.963s
real 0m7.955s
real 0m7.848s
real 0m7.969s
Now, going by "best of ten" (on the assumption that the longer numbers
are all due to IO), I'm saying a 7.933s -> 7.685s reduction, and it does
seem to be outside of the noise (ie the "after" case never broke 8s, while
the "before" case did so half the time).
So looks like about 3% to me.
Doing it for a slightly smaller test-case (just the "arch" subdirectory)
gets more stable numbers probably due to not filling the journal with
metadata updates, so we have:
Before:
real 0m1.633s
real 0m1.633s
real 0m1.633s
real 0m1.632s
real 0m1.632s
real 0m1.630s
real 0m1.634s
real 0m1.631s
real 0m1.632s
real 0m1.632s
After:
real 0m1.610s
real 0m1.609s
real 0m1.610s
real 0m1.608s
real 0m1.607s
real 0m1.610s
real 0m1.609s
real 0m1.611s
real 0m1.608s
real 0m1.611s
where I'ld just take the averages and say 1.632 vs 1.610, which is just
over 1% peformance improvement.
So it's not in the noise, but it's not as big as I initially thought and
measured.
(That said, it obviously depends on how deep the working directory path is
too, and whether it is behind NFS or something else that might need to
cause more work to look up).
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In the case where setup_git_directory_gently fails, avoid the last
chdir("..") by moving it after the ceil_offset check.
Signed-off-by: David Reiss <dreiss@facebook.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Make git recognize a new environment variable that prevents it from
chdir'ing up into specified directories when looking for a GIT_DIR.
Useful for avoiding slow network directories.
For example, I use git in an environment where homedirs are automounted
and "ls /home/nonexistent" takes about 9 seconds. Setting
GIT_CEILING_DIRS="/home" allows "git help -a" (for bash completion) and
"git symbolic-ref" (for my shell prompt) to run in a reasonable time.
Signed-off-by: David Reiss <dreiss@facebook.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
git_config() only had a function parameter, but no callback data
parameter. This assumes that all callback functions only modify
global variables.
With this patch, every callback gets a void * parameter, and it is hoped
that this will help the libification effort.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* lh/git-file:
Teach GIT-VERSION-GEN about the .git file
Teach git-submodule.sh about the .git file
Teach resolve_gitlink_ref() about the .git file
Add platform-independent .git "symlink"
git init --shared=0xxx, where '0xxx' is an octal number, will create
a repository with file modes set to '0xxx'. Users with a safe umask
value (0077) can use this option to force file modes. For example,
'0640' is a group-readable but not group-writable regardless of
user's umask value. Values compatible with old Git versions are written
as they were before, for compatibility reasons. That is, "1" for
"group" and "2" for "everybody".
"git config core.sharedRepository 0xxx" is also handled.
Signed-off-by: Heikki Orsila <heikki.orsila@iki.fi>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This patch allows .git to be a regular textfile containing the path of
the real git directory (prefixed with "gitdir: "), which can be useful on
platforms lacking support for real symlinks.
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
setup_git_directory_gently() only modified the value of its *nongit_ok
argument if we were not in a git repository. Now it will always set it
to 0 when we are inside a repository.
Also remove now unnecessary initializations in the callers of this
function.
Signed-off-by: SZEDER Gábor <szeder@ira.uka.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
An earlier commit d089ebaa (setup: sanitize absolute and funny paths) made
get_pathspec() aware of absolute paths, but with a botched interface that
forced the callers to count the resulting pathspecs in order to detect
an error of giving a path that is outside the work tree.
This fixes it, by dying inside the function.
We had ls-tree test that relied on a misfeature in the original
implementation of its pathspec handling. Leading slashes were silently
removed from them. However we allow giving absolute pathnames (people
want to cut and paste from elsewhere) that are inside work tree these
days, so a pathspec that begin with slash _should_ be treated as a full
path. The test is adjusted to match the updated rule for get_pathspec().
Earlier I mistook three tests given by Robin that they should succeed, but
these are attempts to add path outside work tree, which should fail
loudly. These tests also have been fixed.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This change removes all obvious useless if-before-free tests.
E.g., it replaces code like this:
if (some_expression)
free (some_expression);
with the now-equivalent:
free (some_expression);
It is equivalent not just because POSIX has required free(NULL)
to work for a long time, but simply because it has worked for
so long that no reasonable porting target fails the test.
Here's some evidence from nearly 1.5 years ago:
http://www.winehq.org/pipermail/wine-patches/2006-October/031544.html
FYI, the change below was prepared by running the following:
git ls-files -z | xargs -0 \
perl -0x3b -pi -e \
's/\bif\s*\(\s*(\S+?)(?:\s*!=\s*NULL)?\s*\)\s+(free\s*\(\s*\1\s*\))/$2/s'
Note however, that it doesn't handle brace-enclosed blocks like
"if (x) { free (x); }". But that's ok, since there were none like
that in git sources.
Beware: if you do use the above snippet, note that it can
produce syntactically invalid C code. That happens when the
affected "if"-statement has a matching "else".
E.g., it would transform this
if (x)
free (x);
else
foo ();
into this:
free (x);
else
foo ();
There were none of those here, either.
If you're interested in automating detection of the useless
tests, you might like the useless-if-before-free script in gnulib:
[it *does* detect brace-enclosed free statements, and has a --name=S
option to make it detect free-like functions with different names]
http://git.sv.gnu.org/gitweb/?p=gnulib.git;a=blob;f=build-aux/useless-if-before-free
Addendum:
Remove one more (in imap-send.c), spotted by Jean-Luc Herren <jlh@gmx.ch>.
Signed-off-by: Jim Meyering <meyering@redhat.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* jc/setup:
builtin-mv: minimum fix to avoid losing files
git-add: adjust to the get_pathspec() changes.
Make blame accept absolute paths
setup: sanitize absolute and funny paths in get_pathspec()
The prefix_path() function called from get_pathspec() is
responsible for translating list of user-supplied pathspecs to
list of pathspecs that is relative to the root of the work
tree. When working inside a subdirectory, the user-supplied
pathspecs are taken to be relative to the current subdirectory.
Among special path components in pathspecs, we used to accept
and interpret only "." ("the directory", meaning a no-op) and
".." ("up one level") at the beginning. Everything else was
passed through as-is.
For example, if you are in Documentation/ directory of the
project, you can name Documentation/howto/maintain-git.txt as:
howto/maintain-git.txt
../Documentation/howto/maitain-git.txt
../././Documentation/howto/maitain-git.txt
but not as:
howto/./maintain-git.txt
$(pwd)/howto/maintain-git.txt
This patch updates prefix_path() in several ways:
- If the pathspec is not absolute, prefix (i.e. the current
subdirectory relative to the root of the work tree, with
terminating slash, if not empty) and the pathspec is
concatenated first and used in the next step. Otherwise,
that absolute pathspec is used in the next step.
- Then special path components "." (no-op) and ".." (up one
level) are interpreted to simplify the path. It is an error
to have too many ".." to cause the intermediate result to
step outside of the input to this step.
- If the original pathspec was not absolute, the result from
the previous step is the resulting "sanitized" pathspec.
Otherwise, the result from the previous step is still
absolute, and it is an error if it does not begin with the
directory that corresponds to the root of the work tree. The
directory is stripped away from the result and is returned.
- In any case, the resulting pathspec in the array
get_pathspec() returns omit the ones that caused errors.
With this patch, the last two examples also behave as expected.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
setup_git_directory_gently has done the check already.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* maint:
git-am -i: report rewritten title
git grep shows the same hit repeatedly for unmerged paths
Do check_repository_format() early (re-fix)
Do check_repository_format() early
Add missing inside_work_tree setting in setup_git_directory_gently
This pushes check_repository_format() (actually _gently() version)
to setup_git_directory_gently() in order to prevent from
using unsupported repositories.
New setup_git_directory_gently()'s behaviour is stop searching
for a valid gitdir and return as if there is no gitdir if a
unsupported repository is found. Warning will be thrown in these
cases.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Repository version check is only performed when
setup_git_directory() is called. This makes sure
setup_git_directory_gently() does the check too.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Acked-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Using the helper function to test for absolute paths makes porting easier.
Signed-off-by: Steffen Prohaska <prohaska@zib.de>
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>
Create a setup_work_tree() that can be used from any command requiring
a working tree conditionally.
Signed-off-by: Mike Hommey <mh@glandium.org>
Acked-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When both GIT_DIR and GIT_WORK_TREE are set, and
setup_git_directory_gently() changes the current working
directory accordingly, it should also set inside_work_tree = 1.
Without this, work_tree handling code in setup_git_directory()
will be activated. If you stay in root work tree (no prefix),
it does not harm. It does if you work from a subdirectory though.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
There are a few programs, such as config and diff, which allow running
without a git repository. Therefore, they have to call
setup_git_directory_gently().
However, when GIT_DIR and GIT_WORK_TREE were set, and the current
directory was a subdirectory of the work tree,
setup_git_directory_gently() would return a bogus NULL prefix.
This patch fixes that.
Noticed by REPLeffect on IRC.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
The old behaviour was to unilaterally default to the cwd is the work tree
when GIT_DIR was set, but GIT_WORK_TREE wasn't, no matter if we are inside
the GIT_DIR, or if GIT_DIR is actually something like ../../../.git.
Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* maint:
apply: remove directory that becomes empty by renaming the last file away
setup.c:verify_non_filename(): don't die unnecessarily while disambiguating
If you have a working tree _file_ "foo", attempt to refer to a
branch "foo/bar" without -- to disambiguate, like this:
$ git log foo/bar
tried to make sure that foo/bar cannot be naming a working tree
file "foo/bar" (in which case we would say "which one do you
want? A rev or a working tree file? clarify with -- please").
We run lstat("foo/bar") to check that. If it does not succeed,
there is no ambiguity.
That is good. But we also checked the error status for the
lstat() and expected it to fail with ENOENT. In this particular
case, however, it fails with ENOTDIR. That should be treated as
"expected error" as well.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In set_work_tree(), variable rel needs to be reinitialized to
NULL on every call (it should not be static).
Make sure the incoming dir variable is not too long before
copying to the temporary buffer, and make sure chdir to the
resulting directory succeeds.
This was spotted and fixed by Alex and Johannes in a handful
patch exchanges. Here is the final version.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Acked-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
The old version of work-tree support was an unholy mess, barely readable,
and not to the point.
For example, why do you have to provide a worktree, when it is not used?
As in "git status". Now it works.
Another riddle was: if you can have work trees inside the git dir, why
are some programs complaining that they need a work tree?
IOW it is allowed to call
$ git --git-dir=../ --work-tree=. bla
when you really want to. In this case, you are both in the git directory
and in the working tree. So, programs have to actually test for the right
thing, namely if they are inside a working tree, and not if they are
inside a git directory.
Also, GIT_DIR=../.git should behave the same as if no GIT_DIR was
specified, unless there is a repository in the current working directory.
It does now.
The logic to determine if a repository is bare, or has a work tree
(tertium non datur), is this:
--work-tree=bla overrides GIT_WORK_TREE, which overrides core.bare = true,
which overrides core.worktree, which overrides GIT_DIR/.. when GIT_DIR
ends in /.git, which overrides the directory in which .git/ was found.
In related news, a long standing bug was fixed: when in .git/bla/x.git/,
which is a bare repository, git formerly assumed ../.. to be the
appropriate git dir. This problem was reported by Shawn Pearce to have
caused much pain, where a colleague mistakenly ran "git init" in "/" a
long time ago, and bare repositories just would not work.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Some lines were not indented by tabs but by spaces.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
For compatibility reasons, "git init --shared=all" does not write
"all" into the config, but a number. In the shared setup, you
really have to support even older clients on the _same_ repository.
But git_config_perm() did not pick up on it.
Also, "git update-server-info" failed to pick up on the shared
permissions.
This patch fixes both issues, and adds a test to prove it.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Tested-by: martin f krafft <madduck@madduck.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In user space, and for getcwd(), the check to see if the
resulting path begins with a '/' does not make sense. This is
merely a mistake by Linus who is so used to code for the kernel,
where a d_path() return value pathname can be either a real
path, or something like "pipe:[8003]", and the difference is the
'/' at the beginning.
Pointed out by Dscho, Matthias Lederhofer and clarified by Linus.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* ei/worktree+filter:
filter-branch: always export GIT_DIR if it is set
setup_git_directory: fix segfault if repository is found in cwd
test GIT_WORK_TREE
extend rev-parse test for --is-inside-work-tree
Use new semantics of is_bare/inside_git_dir/inside_work_tree
introduce GIT_WORK_TREE to specify the work tree
test git rev-parse
rev-parse: introduce --is-bare-repository
rev-parse: document --is-inside-git-dir
This uses "git-apply --whitespace=strip" to fix whitespace errors that have
crept in to our source files over time. There are a few files that need
to have trailing whitespaces (most notably, test vectors). The results
still passes the test, and build result in Documentation/ area is unchanged.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Additionally there was a similar part calling setenv and getenv
in the same way which missed a check if getenv succeeded.
Signed-off-by: Matthias Lederhofer <matled@gmx.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Up to now to check for a working tree this was used:
!is_bare && !inside_git_dir
(the check for bare is redundant because is_inside_git_dir
returned already 1 for bare repositories).
Now the check is:
inside_work_tree && !inside_git_dir
Signed-off-by: Matthias Lederhofer <matled@gmx.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
setup_gdg is used as abbreviation for setup_git_directory_gently.
The work tree can be specified using the environment variable
GIT_WORK_TREE and the config option core.worktree (the environment
variable has precendence over the config option). Additionally
there is a command line option --work-tree which sets the
environment variable.
setup_gdg does the following now:
GIT_DIR unspecified
repository in .git directory
parent directory of the .git directory is used as work tree,
GIT_WORK_TREE is ignored
GIT_DIR unspecified
repository in cwd
GIT_DIR is set to cwd
see the cases with GIT_DIR specified what happens next and
also see the note below
GIT_DIR specified
GIT_WORK_TREE/core.worktree unspecified
cwd is used as work tree
GIT_DIR specified
GIT_WORK_TREE/core.worktree specified
the specified work tree is used
Note on the case where GIT_DIR is unspecified and repository is in cwd:
GIT_WORK_TREE is used but is_inside_git_dir is always true.
I did it this way because setup_gdg might be called multiple
times (e.g. when doing alias expansion) and in successive calls
setup_gdg should do the same thing every time.
Meaning of is_bare/is_inside_work_tree/is_inside_git_dir:
(1) is_bare_repository
A repository is bare if core.bare is true or core.bare is
unspecified and the name suggests it is bare (directory not
named .git). The bare option disables a few protective
checks which are useful with a working tree. Currently
this changes if a repository is bare:
updates of HEAD are allowed
git gc packs the refs
the reflog is disabled by default
(2) is_inside_work_tree
True if the cwd is inside the associated working tree (if there
is one), false otherwise.
(3) is_inside_git_dir
True if the cwd is inside the git directory, false otherwise.
Before this patch is_inside_git_dir was always true for bare
repositories.
When setup_gdg finds a repository git_config(git_default_config) is
always called. This ensure that is_bare_repository makes use of
core.bare and does not guess even though core.bare is specified.
inside_work_tree and inside_git_dir are set if setup_gdg finds a
repository. The is_inside_work_tree and is_inside_git_dir functions
will die if they are called before a successful call to setup_gdg.
Signed-off-by: Matthias Lederhofer <matled@gmx.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* maint:
git.el: Retrieve commit log information from .dotest directory.
git.el: Avoid appending a signoff line that is already present.
setup_git_directory_gently: fix off-by-one error
user-manual: install user manual stylesheet with other web documents
user-manual: fix rendering of history diagrams
user-manual: fix missing colon in git-show example
user-manual: fix inconsistent use of pull and merge
user-manual: fix inconsistent example
glossary: fix overoptimistic automatic linking of defined terms
Documentation: s/seperator/separator/
Adjust reflog filemode in shared repository
don't tell getcwd that the buffer has one spare byte for an extra /
Signed-off-by: Matthias Lederhofer <matled@gmx.net>
Signed-off-by: Junio C Hamano <junkio@cox.net>
This mechanically converts strncmp() to use prefixcmp(), but only when
the parameters match specific patterns, so that they can be verified
easily. Leftover from this will be fixed in a separate step, including
idiotic conversions like
if (!strncmp("foo", arg, 3))
=>
if (!(-prefixcmp(arg, "foo")))
This was done by using this script in px.perl
#!/usr/bin/perl -i.bak -p
if (/strncmp\(([^,]+), "([^\\"]*)", (\d+)\)/ && (length($2) == $3)) {
s|strncmp\(([^,]+), "([^\\"]*)", (\d+)\)|prefixcmp($1, "$2")|;
}
if (/strncmp\("([^\\"]*)", ([^,]+), (\d+)\)/ && (length($1) == $3)) {
s|strncmp\("([^\\"]*)", ([^,]+), (\d+)\)|(-prefixcmp($2, "$1"))|;
}
and running:
$ git grep -l strncmp -- '*.c' | xargs perl px.perl
Signed-off-by: Junio C Hamano <junkio@cox.net>
For example, it makes no sense to check the presence of a file
named "HEAD" when calling "git log HEAD" in a bare repository.
Noticed by Han-Wen Nienhuys.
Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
This allows "git checkout v1.4.3" to dissociate the HEAD of
repository from any branch. After this point, "git branch"
starts reporting that you are not on any branch. You can go
back to an existing branch by saying "git checkout master", for
example.
This is still experimental. While I think it makes sense to
allow commits on top of detached HEAD, it is rather dangerous
unless you are careful in the current form. Next "git checkout
master" will obviously lose what you have done, so we might want
to require "git checkout -f" out of a detached HEAD if we find
that the HEAD commit is not an ancestor of any other branches.
There is no such safety valve implemented right now.
On the other hand, the reason the user did not start the ad-hoc
work on a new branch with "git checkout -b" was probably because
the work was of a throw-away nature, so the convenience of not
having that safety valve might be even better. The user, after
accumulating some commits on top of a detached HEAD, can always
create a new branch with "git checkout -b" not to lose useful
work done while the HEAD was detached.
We'll see.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Many users find it unfriendly that they can create a bare git
repository easily with `git clone --bare` but are then unable to
run simple commands like `git log` once they cd into that newly
created bare repository. This occurs because we do not check to
see if the current working directory is a git repository.
Instead of failing out with "fatal: Not a git repository" we should
try to automatically detect if the current working directory is
a bare repository and use that for GIT_DIR, and fail out only if
that doesn't appear to be true.
We test the current working directory only after we have tried
searching up the directory tree. This is to retain backwards
compatibility with our previous behavior on the off chance that
a user has a 'refs' and 'objects' subdirectories and a 'HEAD'
file that looks like a symref, all stored within a repository's
associated working directory.
This change also consolidates the validation logic between the case
of GIT_DIR being supplied and GIT_DIR not being supplied, cleaning
up the code.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
The 'receive.denynonfastforwards' option has nothing to do with
the repository format version. Since receive-pack already uses
git_config to initialize itself before executing any updates we
can use the normal configuration strategy and isolate the receive
specific variables away from the core variables.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
If receive.denyNonFastforwards is set to true, git-receive-pack will deny
non fast-forwards, i.e. forced updates. Most notably, a push to a repository
which has that flag set will fail.
As a first user, 'git-init-db --shared' sets this flag, since in a shared
setup, you are most unlikely to want forced pushes to succeed.
Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
We used to test if a pointer was NULL, and if it was, try to access it.
Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Earlier we barfed when GIT_DIR environment variable points at a
directory yet to be created, which made it impossible to use
configuration mechanism in "git-init-db".
Signed-off-by: Matthias Lederhofer <matled@gmx.net>
Signed-off-by: Junio C Hamano <junkio@cox.net>
This enhances core.sharedrepository to have additionally
specify that read and exec permissions to be given to others as
well. It is useful when serving a repository via gitweb and
git-daemon that runs as a user outside the project group.
The configuration item can take the following values:
[core]
sharedrepository ; the same as "group"
sharedrepository = true ; ditto
sharedrepository = 1 ; ditto
sharedrepository = group ; allow rwx to group
sharedrepository = all ; allow rwx to group, allow rx to other
sharedrepository = umask ; not shared - use umask
It also extends "git init-db" to take "--shared=all" and friends
from the command line.
Signed-off-by: Junio C Hamano <junkio@cox.net>
If you don't have a "--" marker, then:
- all of the arguments we are going to assume are pathspecs
must exist in the working tree.
- none of the arguments we parsed as revisions could be
interpreted as a filename.
so that there really isn't any possibility of confusion in case
somebody does have a revision that looks like a pathname too.
The former rule has been in effect; this implements the latter.
Signed-off-by: Junio C Hamano <junkio@cox.net>
When we are in a subdirectory of a git archive, we need to take the prefix
of that subdirectory into accoung when we verify filename arguments.
Noted by Matthias Lederhofer
This also uses the improved error reporting for all the other git commands
that use the revision parsing interfaces, not just git-rev-parse. Also, it
makes the error reporting for mixed filenames and argument flags clearer
(you cannot put flags after the start of the pathname list).
[jc: with fix to a trivial typo noticed by Timo Hirvonen]
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
If the config variable 'core.sharedrepository' is set, the directories
$GIT_DIR/objects/
$GIT_DIR/objects/??
$GIT_DIR/objects/pack
$GIT_DIR/refs
$GIT_DIR/refs/heads
$GIT_DIR/refs/heads/tags
are set group writable (and g+s, since the git group may be not the primary
group of all users).
Since all files are written as lock files first, and then moved to
their destination, they do not have to be group writable. Indeed, if
this leads to problems you found a bug.
Note that -- as in my first attempt -- the config variable is set in the
function which checks the repository format. If this were done in
git_default_config instead, a lot of programs would need to be modified
to call git_config(git_default_config) first.
[jc: git variables should be in environment.c unless there is a
compelling reason to do otherwise.]
Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
- prefix_filename() is like prefix_path() but can be used to
name any file on the filesystem, not the files that might go
into the index file.
- setup_git_directory_gently() tries to find the GIT_DIR, but does
not die() if called outside a git repository.
Signed-off-by: Junio C Hamano <junkio@cox.net>
After figuring out the GIT_DIR location, make sure the
repository is of the right vintage, by calling
check_repository_format(). .
Signed-off-by: Junio C Hamano <junkio@cox.net>
setup_git_directory() always trusted what the user told where
GIT_DIR was, and assumed that is a valid .git/ directory. This
commit changes it to at least do the same level validation as
is_toplevel_directory() does -- has refs/, has objects/ unless
GIT_OBJECT_DIRECTORY is set, and has valid HEAD symlink or
symref.
Signed-off-by: Junio C Hamano <junkio@cox.net>
This adds the counterpart of git-update-ref that lets you read
and create "symbolic refs". By default it uses a symbolic link
to represent ".git/HEAD -> refs/heads/master", but it can be compiled
to use the textfile symbolic ref.
The places that did 'readlink .git/HEAD' and 'ln -s refs/heads/blah
.git/HEAD' have been converted to use new git-symbolic-ref command, so
that they can deal with either implementation.
Signed-off-by: Junio C Hamano <junio@twinsun.com>
This is a long overdue clean-up to the code for parsing and passing
diff options. It also tightens some constness issues.
Signed-off-by: Junio C Hamano <junkio@cox.net>
We have deprecated the old environment variable names for quite a
while and now it's time to remove them. Gone are:
SHA1_FILE_DIRECTORIES AUTHOR_DATE AUTHOR_EMAIL AUTHOR_NAME
COMMIT_AUTHOR_EMAIL COMMIT_AUTHOR_NAME SHA1_FILE_DIRECTORY
Signed-off-by: Junio C Hamano <junkio@cox.net>
Inspired by a report by Kalle Valo, this changes git-sh-setup-script and
the "setup_git_directory()" function to test that $GIT_DIR/HEAD is a
symlink, since a number of core git features depend on that these days.
We used to allow a regular file there, but git-fsck-cache has been
complaining about that for a while, and anything that uses branches
depends on the HEAD file being a symlink, so let's just encode that as a
fundamental requirement.
Before, a non-symlink HEAD file would appear to work, but have subtle bugs
like not having the HEAD show up as a valid reference (because it wasn't
under "refs"). Now, we will complain loudly, and the user can fix it up
trivially instead of getting strange behaviour.
This also removes the tests for "$GIT_DIR" and "$GIT_OBJECT_DIRECTORY"
being directories, since the other tests will implicitly test for that
anyway (ie the tests for HEAD, refs and 00 would fail).
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Not all programs necessarily have a pathspec array of pathnames, some of
them (like git-update-cache) want to do things one file at a time. So
export the single-path interface too.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
This fixes up usage of ".." (without an ending slash) and "." (with or
without the ending slash) in the git diff family.
It also fixes pathspec matching for the case of an empty pathspec, since a
"." in the top-level directory (or enough ".." under subdirectories) will
result in an empty pathspec. We used to not match it against anything, but
it should in fact match everything.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
We may not actually have a valid HEAD at all times, so relax the validity
tests for a .git subdirectory accordingly.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
We always show the diff as an absolute path, but pathnames to diff are
taken relative to the current working directory (and if no pathnames are
given, the default ends up being all of the current working directory).
Note that "../xyz" also works, so you can do
cd linux/drivers/char
git diff ../block
and it will generate a diff of the linux/drivers/block changes.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
