In the next patch we need the ability to expand '~' to
real_path($HOME). But we can't do that from outside because '~' is part
of a pattern, not a true path. Add an option to expand_user_path() to do
so.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Sometimes a set of repositories want to share configuration settings
among themselves that are distinct from other such sets of repositories.
A user may work on two projects, each of which have multiple
repositories, and use one user.email for one project while using another
for the other.
Setting $GIT_DIR/.config works, but if the penalty of forgetting to
update $GIT_DIR/.config is high (especially when you end up cloning
often), it may not be the best way to go. Having the settings in
~/.gitconfig, which would work for just one set of repositories, would
not well in such a situation. Having separate ${HOME}s may add more
problems than it solves.
Extend the include.path mechanism that lets a config file include
another config file, so that the inclusion can be done only when some
conditions hold. Then ~/.gitconfig can say "include config-project-A
only when working on project-A" for each project A the user works on.
In this patch, the only supported grouping is based on $GIT_DIR (in
absolute path), so you would need to group repositories by directory, or
something like that to take advantage of it.
We already have include.path for unconditional includes. This patch goes
with includeIf.<condition>.path to make it clearer that a condition is
required. The new config has the same backward compatibility approach as
include.path: older git versions that don't understand includeIf will
simply ignore them.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When core.logallrefupdates is true, we only create a new reflog for refs
that are under certain well-known hierarchies. The reason is that we
know that some hierarchies (like refs/tags) are not meant to change, and
that unknown hierarchies might not want reflogs at all (e.g., a
hypothetical refs/foo might be meant to change often and drop old
history immediately).
However, sometimes it is useful to override this decision and simply log
for all refs, because the safety and audit trail is more important than
the performance implications of keeping the log around.
This patch introduces a new "always" mode for the core.logallrefupdates
option which will log updates to everything under refs/, regardless
where in the hierarchy it is (we still will not log things like
ORIG_HEAD and FETCH_HEAD, which are known to be transient).
Based-on-patch-by: Jeff King <peff@peff.net>
Signed-off-by: Cornelius Weig <cornelius.weig@tngtech.com>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git grep" has been taught to optionally recurse into submodules.
* bw/grep-recurse-submodules:
grep: search history of moved submodules
grep: enable recurse-submodules to work on <tree> objects
grep: optionally recurse into submodules
grep: add submodules as a grep source type
submodules: load gitmodules file from commit sha1
submodules: add helper to determine if a submodule is initialized
submodules: add helper to determine if a submodule is populated
real_path: canonicalize directory separators in root parts
real_path: have callers use real_pathdup and strbuf_realpath
real_path: create real_pathdup
real_path: convert real_path_internal to strbuf_realpath
real_path: resolve symlinks by hand
Leakage of lockfiles in the config subsystem has been fixed.
* nd/config-misc-fixes:
config.c: handle lock file in error case in git_config_rename_...
config.c: rename label unlock_and_out
config.c: handle error case for fstat() calls
Recent update to the default abbreviation length that auto-scales
lacked documentation update, which has been corrected.
* jc/abbrev-autoscale-config:
config.abbrev: document the new default that auto-scales
We somehow forgot to update the "default is 7" in the
documentation. Also give a way to explicitly ask the auto-scaling
by setting config.abbrev to "auto".
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We could rely on atexit() to clean up everything, but let's be
explicit when we can. And it's good anyway because the function is
called the second time in the same process, we're in trouble.
This function should not affect the successful case because after
commit_lock_file() is called, rollback_lock_file() becomes no-op,
as long as it is initialized.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
teach submodules to load a '.gitmodules' file from a commit sha1. This
enables the population of the submodule_cache to be based on the state
of the '.gitmodules' file from a particular commit.
Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
There are two ways to unlock a file: commit, or revert. Rename it to
commit_and_out to avoid confusion.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
There are three codepaths that use a variable whose name is
pack_compression_level to affect how objects and deltas sent to a
packfile is compressed. Unlike zlib_compression_level that controls
the loose object compression, however, this variable was static to
each of these codepaths. Two of them read the pack.compression
configuration variable, using core.compression as the default, and
one of them also allowed overriding it from the command line.
The other codepath in bulk-checkin did not pay any attention to the
configuration.
Unify the configuration parsing to git_default_config(), where we
implement the parsing of core.loosecompression and core.compression
and make the former override the latter, by moving code to parse
pack.compression and also allow core.compression to give default to
this variable.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When we find ambiguous short sha1s, we may get a
disambiguation rule from our caller's context. But if we
don't, we fall back to treating all sha1s the same, even
though most projects will tend to refer only to commits by
their short sha1s.
This patch introduces a configuration option that lets the
user pick a different fallback (e.g., only commits). It's
possible that we may want to make this the default, but it's
a good idea to start as a config option for two reasons:
1. It lets people experiment with this and see if it's a
good idea (i.e., the "tend to" above is an assumption;
we don't really know if this will break some obscure
cases).
2. Even if we do flip the default, it gives people an
escape hatch if it causes problems (you can sometimes
override it by asking for "1234^{tree}", but not all
combinations are possible).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
There were numerous corner cases in which the configuration files
are read and used or not read at all depending on the directory a
Git command was run, leading to inconsistent behaviour. The code
to set-up repository access at the beginning of a Git process has
been updated to fix them.
* jk/setup-sequence-update:
t1007: factor out repeated setup
init: reset cached config when entering new repo
init: expand comments explaining config trickery
config: only read .git/config from configured repos
test-config: setup git directory
t1302: use "git -C"
pager: handle early config
pager: use callbacks instead of configset
pager: make pager_program a file-local static
pager: stop loading git_default_config()
pager: remove obsolete comment
diff: always try to set up the repository
diff: handle --no-index prefixes consistently
diff: skip implicit no-index check when given --no-index
patch-id: use RUN_SETUP_GENTLY
hash-object: always try to set up the git repository
When git_config() runs, it looks in the system, user-wide,
and repo-level config files. It gets the latter by calling
git_pathdup(), which in turn calls get_git_dir(). If we
haven't set up the git repository yet, this may simply
return ".git", and we will look at ".git/config". This
seems like it would be helpful (presumably we haven't set up
the repository yet, so it tries to find it), but it turns
out to be a bad idea for a few reasons:
- it's not sufficient, and therefore hides bugs in a
confusing way. Config will be respected if commands are
run from the top-level of the working tree, but not from
a subdirectory.
- it's not always true that we haven't set up the
repository _yet_; we may not want to do it at all. For
instance, if you run "git init /some/path" from inside
another repository, it should not load config from the
existing repository.
- there might be a path ".git/config", but it is not the
actual repository we would find via setup_git_directory().
This may happen, e.g., if you are storing a git
repository inside another git repository, but have
munged one of the files in such a way that the
inner repository is not valid (e.g., by removing HEAD).
We have at least two bugs of the second type in git-init,
introduced by ae5f677 (lazily load core.sharedrepository,
2016-03-11). It causes init to use git_configset(), which
loads all of the config, including values from the current
repo (if any). This shows up in two ways:
1. If we happen to be in an existing repository directory,
we'll read and respect core.sharedrepository from it,
even though it should have no bearing on the new
repository. A new test in t1301 covers this.
2. Similarly, if we're in an existing repo that sets
core.logallrefupdates, that will cause init to fail to
set it in a newly created repository (because it thinks
that the user's templates already did so). A new test
in t0001 covers this.
We also need to adjust an existing test in t1302, which
gives another example of why this patch is an improvement.
That test creates an embedded repository with a bogus
core.repositoryformatversion of "99". It wants to make sure
that we actually stop at the bogus repo rather than
continuing upward to find the outer repo. So it checks that
"git config core.repositoryformatversion" returns 99. But
that only works because we blindly read ".git/config", even
though we _know_ we're in a repository whose vintage we do
not understand.
After this patch, we avoid reading config from the unknown
vintage repository at all, which is a safer choice. But we
need to tweak the test, since core.repositoryformatversion
will not return 99; it will claim that it could not find the
variable at all.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In git_pager(), we really only care about getting the value
of core.pager. But to do so, we use the git_default_config()
callback, which loads many other values. Ordinarily it
isn't a big deal to load this config an extra time, as it
simply overwrites the values from the previous run. But it's
a bad idea here, for two reasons:
1. The pager setup may be called very early in the
program, before we have found the git repository. As a
result, we may fail to read the correct repo-level
config file. This is a problem for core.pager, too,
but we should at least try to minimize the pollution to
other configured values.
2. Because we call setup_pager() from git.c, basically
every builtin command _may_ end up reading this config
and getting an implicit git_default_config() setup.
Which doesn't sound like a terrible thing, except that
we don't do it consistently; it triggers only when
stdout is a tty. So if a command forgets to load the
default config itself (but depends on it anyway), it
may appear to work, and then mysteriously fail when the
pager is not in use.
We can improve this by loading _just_ the core.pager config
from git_pager().
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Introduced in 473166b ("config: add 'origin_type' to config_source
struct", 2016-02-19), Git can inform the user about the origin of a
config error, but the implementation does not allow translators to
translate the keywords 'file', 'blob, 'standard input', and
'submodule-blob'. Moreover, for the second message, a reason for the
error is appended to the message, not allowing translators to translate
that reason either.
Unfold the message into several templates for each known origin_type.
That would result in better translation at the expense of code
verbosity.
Add enum config_oringin_type to ease management of the various
configuration origin types (blob, file, etc). Previously origin type
was considered from command line if cf->origin_type == NULL, i.e.,
uninitialized. Now we set origin_type to CONFIG_ORIGIN_CMDLINE in
git_config_from_parameters() and configset_add_value().
For error message in git_parse_source(), use xstrfmt() function to
prepare the message string, instead of doing something like it's done
for die_bad_number(), because intelligibility and code conciseness are
improved for that instance.
Signed-off-by: Vasco Almeida <vascomalmeida@sapo.pt>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"upload-pack" allows a custom "git pack-objects" replacement when
responding to "fetch/clone" via the uploadpack.packObjectsHook.
* jk/upload-pack-hook:
upload-pack: provide a hook for running pack-objects
t1308: do not get fooled by symbolic links to the source tree
config: add a notion of "scope"
config: return configset value for current_config_ functions
config: set up config_source for command-line config
git_config_parse_parameter: refactor cleanup code
git_config_with_options: drop "found" counting
A couple of bugs around core.autocrlf have been fixed.
* tb/core-eol-fix:
convert.c: ident + core.autocrlf didn't work
t0027: test cases for combined attributes
convert: allow core.autocrlf=input and core.eol=crlf
t0027: make commit_chk_wrnNNO() reliable
A config callback passed to git_config() doesn't know very
much about the context in which it sees a variable. It can
ask whether the variable comes from a file, and get the file
name. But without analyzing the filename (which is hard to
do accurately), it cannot tell whether it is in system-level
config, user-level config, or repo-specific config.
Generally this doesn't matter; the point of not passing this
to the callback is that it should treat the config the same
no matter where it comes from. But some programs, like
upload-pack, are a special case: we should be able to run
them in an untrusted repository, which means we cannot use
any "dangerous" config from the repository config file (but
it is OK to use it from system or user config).
This patch teaches the config code to record the "scope" of
each variable, and make it available inside config
callbacks, similar to how we give access to the filename.
The scope is the starting source for a particular parsing
operation, and remains the same even if we include other
files (so a .git/config which includes another file will
remain CONFIG_SCOPE_REPO, as it would be similarly
untrusted).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When 473166b (config: add 'origin_type' to config_source
struct, 2016-02-19) added accessor functions for the origin
type and name, it taught them only to look at the "cf"
struct that is filled in while we are parsing the config.
This is sufficient to make it work with git-config, which
uses git_config_with_options() under the hood. That function
freshly parses the config files and triggers the callback
when it parses each key.
Most git programs, however, use git_config(). This interface
will populate a cache during the actual parse, and then
serve values from the cache. Calling current_config_filename()
in a callback here will find a NULL cf and produce an error.
There are no such callers right now, but let's prepare for
adding some by making this work.
We already record source information in a struct attached to
each value. We just need to make it globally available and
then consult it from the accessor functions.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
On Windows, .git and optionally any files whose name starts with a
dot are now marked as hidden, with a core.hideDotFiles knob to
customize this behaviour.
* js/windows-dotgit:
mingw: remove unnecessary definition
mingw: introduce the 'core.hideDotFiles' setting
When we parse a config file, we set up the global "cf"
variable as a pointer to a "struct config_source" describing
the file we are parsing. This is used for error messages, as
well as for lookup functions like current_config_name().
The "cf" variable is NULL in two cases:
1. When we are parsing command-line config, in which case
there is no source file.
2. When we are not parsing any config at all.
Callers like current_config_name() must assume we are in
case 1 if they see a NULL "cf". However, this means that if
they are accidentally used outside of a config parsing
callback, they will quietly return a bogus answer.
This might seem like an unlikely accident (why would you ask
for the current config file if you are not parsing config?),
but it's actually an easy mistake to make due to the
configset caching. git_config() serves the answers from a
configset cache, and any calls to current_config_name() will
claim that we are parsing command-line config, no matter
what the original source.
So let's distinguish these cases by having the command-line
config parser set up a config_source with a NULL name (which
callers already handle properly). We can use this to catch
programming errors in some cases, and to give better
messages to the user in others.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We have several exits from the function, each of which has
to do some cleanup. Let's consolidate these in an "out"
label we can jump to. This doesn't save us much now, but it
will help as we add more things that need cleanup.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Prior to 1f2baa7 (config: treat non-existent config files as
empty, 2010-10-21), we returned an error if any config files
were missing. That commit made this a non-error, but
returned the number of sources found, in case any caller
wanted to distinguish this case.
In the past 5+ years, no caller has; the only two places
which bother to check the return value care only about the
error case. Let's drop this code, which complicates the
function. Similarly, let's drop the "found anything" return
from git_config_from_parameters, which was present only to
support this (and similarly has never had other callers care
for the past 5+ years).
Note that we do need to update a comment in one of the
callers, even though the code immediately below it doesn't
care about this case.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
A couple of bugs around core.autocrlf have been fixed.
* tb/core-eol-fix:
convert.c: ident + core.autocrlf didn't work
t0027: test cases for combined attributes
convert: allow core.autocrlf=input and core.eol=crlf
t0027: make commit_chk_wrnNNO() reliable
* sb/misc-cleanups:
submodule-config: don't shadow `cache`
config.c: drop local variable
credential-cache, send_request: close fd when done
bundle: don't leak an fd in case of early return
abbrev_sha1_in_line: don't leak memory
notes: don't leak memory in git_config_get_notes_strategy
On Windows, .git and optionally any files whose name starts with a
dot are now marked as hidden, with a core.hideDotFiles knob to
customize this behaviour.
* js/windows-dotgit:
mingw: remove unnecessary definition
mingw: introduce the 'core.hideDotFiles' setting
The code for warning_errno/die_errno has been refactored and a new
error_errno() reporting helper is introduced.
* nd/error-errno: (41 commits)
wrapper.c: use warning_errno()
vcs-svn: use error_errno()
upload-pack.c: use error_errno()
unpack-trees.c: use error_errno()
transport-helper.c: use error_errno()
sha1_file.c: use {error,die,warning}_errno()
server-info.c: use error_errno()
sequencer.c: use error_errno()
run-command.c: use error_errno()
rerere.c: use error_errno() and warning_errno()
reachable.c: use error_errno()
mailmap.c: use error_errno()
ident.c: use warning_errno()
http.c: use error_errno() and warning_errno()
grep.c: use error_errno()
gpg-interface.c: use error_errno()
fast-import.c: use error_errno()
entry.c: use error_errno()
editor.c: use error_errno()
diff-no-index.c: use error_errno()
...
A new configuration variable core.hooksPath allows customizing
where the hook directory is.
* ab/hooks:
hooks: allow customizing where the hook directory is
githooks.txt: minor improvements to the grammar & phrasing
githooks.txt: amend dangerous advice about 'update' hook ACL
githooks.txt: improve the intro section
On Unix (and Linux), files and directories whose names start with a dot
are usually not shown by default. This convention is used by Git: the
.git/ directory should be left alone by regular users, and only accessed
through Git itself.
On Windows, no such convention exists. Instead, there is an explicit flag
to mark files or directories as hidden.
In the early days, Git for Windows did not mark the .git/ directory (or
for that matter, any file or directory whose name starts with a dot)
hidden. This lead to quite a bit of confusion, and even loss of data.
Consequently, Git for Windows introduced the core.hideDotFiles setting,
with three possible values: true, false, and dotGitOnly, defaulting to
marking only the .git/ directory as hidden.
The rationale: users do not need to access .git/ directly, and indeed (as
was demonstrated) should not really see that directory, either. However,
not all dot files should be hidden by default, as e.g. Eclipse does not
show them (and the user would therefore be unable to see, say, a
.gitattributes file).
In over five years since the last attempt to bring this patch into core
Git, a slightly buggy version of this patch has served Git for Windows'
users well: no single report indicated problems with the hidden .git/
directory, and the stream of problems caused by the previously non-hidden
.git/ directory simply stopped. The bugs have been fixed during the
process of getting this patch upstream.
Note that there is a funny quirk we have to pay attention to when
creating hidden files: we use Win32's _wopen() function which
transmogrifies its arguments and hands off to Win32's CreateFile()
function. That latter function errors out with ERROR_ACCESS_DENIED (the
equivalent of EACCES) when the equivalent of the O_CREAT flag was passed
and the file attributes (including the hidden flag) do not match an
existing file's. And _wopen() accepts no parameter that would be
transmogrified into said hidden flag. Therefore, we simply try again
without O_CREAT.
A slightly different method is required for our fopen()/freopen()
function as we cannot even *remove* the implicit O_CREAT flag.
Therefore, we briefly mark existing files as unhidden when opening them
via fopen()/freopen().
The ERROR_ACCESS_DENIED error can also be triggered by opening a file
that is marked as a system file (which is unlikely to be tracked in
Git), and by trying to create a file that has *just* been deleted and is
awaiting the last open handles to be released (which would be handled
better by the "Try again?" logic, a story for a different patch series,
though). In both cases, it does not matter much if we try again without
the O_CREAT flag, read: it does not hurt, either.
For details how ERROR_ACCESS_DENIED can be triggered, see
https://msdn.microsoft.com/en-us/library/windows/desktop/aa363858
Original-patch-by: Erik Faye-Lund <kusmabite@gmail.com>
Initial-Test-By: Pat Thoyts <patthoyts@users.sourceforge.net>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Change the hardcoded lookup for .git/hooks/* to optionally lookup in
$(git config core.hooksPath)/* instead.
This is essentially a more intrusive version of the git-init ability to
specify hooks on init time via init templates.
The difference between that facility and this feature is that this can
be set up after the fact via e.g. ~/.gitconfig or /etc/gitconfig to
apply for all your personal repositories, or all repositories on the
system.
I plan on using this on a centralized Git server where users can create
arbitrary repositories under /gitroot, but I'd like to manage all the
hooks that should be run centrally via a unified dispatch mechanism.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git config" had a codepath that tried to pass a NULL to
printf("%s"), which nobody seems to have noticed.
* jk/do-not-printf-NULL:
git_config_set_multivar_in_file: handle "unset" errors
git_config_set_multivar_in_file: all non-zero returns are errors
config: lower-case first word of error strings
As `ret` is not used for anything except determining an early return,
we don't need a variable for that. Drop it.
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Even though the configuration parser errors out when core.autocrlf
is set to 'input' when core.eol is set to 'crlf', there is no need
to do so, because the core.autocrlf setting trumps core.eol.
Allow all combinations of core.crlf and core.eol and document
that core.autocrlf overrides core.eol.
Signed-off-by: Torsten Bögershausen <tboegi@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git config" had a codepath that tried to pass a NULL to
printf("%s"), which nobody seems to have noticed.
* jk/do-not-printf-NULL:
git_config_set_multivar_in_file: handle "unset" errors
git_config_set_multivar_in_file: all non-zero returns are errors
config: lower-case first word of error strings
The repository set-up sequence has been streamlined (the biggest
change is that there is no longer git_config_early()), so that we
do not attempt to look into refs/* when we know we do not have a
Git repository.
* jk/check-repository-format:
verify_repository_format: mark messages for translation
setup: drop repository_format_version global
setup: unify repository version callbacks
init: use setup.c's repo version verification
setup: refactor repo format reading and verification
config: drop git_config_early
check_repository_format_gently: stop using git_config_early
lazily load core.sharedrepository
wrap shared_repository global in get/set accessors
setup: document check_repository_format()
We pass off to the "_gently" form to do the real work, and
just die() if it returned an error. However, our die message
de-references "value", which may be NULL if the request was
to unset a variable. Nobody using glibc noticed, because it
simply prints "(null)", which is good enough for the test
suite (and presumably very few people run across this in
practice). But other libc implementations (like Solaris) may
segfault.
Let's not only fix that, but let's make the message more
clear about what is going on in the "unset" case.
Reported-by: "Tom G. Christensen" <tgc@jupiterrise.com>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This function is just a thin wrapper for the "_gently" form
of the function. But the gently form is designed to feed
builtin/config.c, which passes our return code directly to
its exit status, and thus uses positive error values for
some cases. We check only negative values, meaning we would
fail to die in some cases (e.g., a malformed key).
This may or may not be triggerable in practice; we tend to
use this non-gentle form only when setting internal
variables, which would not have malformed keys.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This follows our usual style (both throughout git, and
throughout the rest of this file).
This covers the whole file, but note that I left the capitalization in
the multi-sentence:
error: malformed value...
error: Must be one of ...
because it helps make it clear that we are starting a new sentence in
the second one.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git -c credential.<var>=<value> submodule" can now be used to
propagate configuration variables related to credential helper
down to the submodules.
* jk/submodule-c-credential:
git_config_push_parameter: handle empty GIT_CONFIG_PARAMETERS
git: submodule honor -c credential.* from command line
quote: implement sq_quotef()
submodule: fix segmentation fault in submodule--helper clone
submodule: fix submodule--helper clone usage
submodule: check argc count for git submodule--helper clone
submodule: don't pass empty string arguments to submodule--helper clone
The "git -c var=value" option stuffs the config value into
$GIT_CONFIG_PARAMETERS, so that sub-processes can see it.
When the config is later read via git_config() or similar,
we parse it back out of that variable. The parsing end is a
little bit picky; it assumes that each entry was generated
with sq_quote_buf(), and that there is no extraneous
whitespace.
On the generating end, we are careful to append to an
existing $GIT_CONFIG_PARAMETERS variable if it exists.
However, our test for "should we add a space separator" is
too liberal: it will add one even if the environment
variable exists but is empty. As a result, you might end up
with:
GIT_CONFIG_PARAMETERS=" 'core.foo=bar'"
which the parser will choke on.
This was hard to trigger in older versions of git, since we
only set the variable when we had something to put into it
(though you could certainly trigger it manually). But since
14111fc (git: submodule honor -c credential.* from command
line, 2016-02-29), the submodule code will unconditionally
put the $GIT_CONFIG_PARAMETERS variable into the environment
of any operation in the submodule, whether it is empty or
not. So any of those operations which themselves use "git
-c" will generate the unparseable value and fail.
We can easily fix it by catching this case on the generating
side. While we're adding a test, let's also check that
multiple layers of "git -c" work, which was previously not
tested at all.
Reported-by: Shin Fan <shinfan@google.com>
Signed-off-by: Jeff King <peff@peff.net>
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Tested-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
There are no more callers, and it's a rather confusing
interface. This could just be folded into
git_config_with_options(), but for the sake of readability,
we'll leave it as a separate (static) helper function.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* jk/tighten-alloc: (23 commits)
compat/mingw: brown paper bag fix for 50a6c8e
ewah: convert to REALLOC_ARRAY, etc
convert ewah/bitmap code to use xmalloc
diff_populate_gitlink: use a strbuf
transport_anonymize_url: use xstrfmt
git-compat-util: drop mempcpy compat code
sequencer: simplify memory allocation of get_message
test-path-utils: fix normalize_path_copy output buffer size
fetch-pack: simplify add_sought_entry
fast-import: simplify allocation in start_packfile
write_untracked_extension: use FLEX_ALLOC helper
prepare_{git,shell}_cmd: use argv_array
use st_add and st_mult for allocation size computation
convert trivial cases to FLEX_ARRAY macros
use xmallocz to avoid size arithmetic
convert trivial cases to ALLOC_ARRAY
convert manual allocations to argv_array
argv-array: add detach function
add helpers for allocating flex-array structs
harden REALLOC_ARRAY and xcalloc against size_t overflow
...
Nguyễn Thái Ngọc Duy
Cornelius Weig
Junio C Hamano
Brandon Williams
Jeff King
Jean-Noel Avila
Vasco Almeida
Peter Colberg
Johannes Schindelin
Ævar Arnfjörð Bjarmason
Stefan Beller
Torsten Bögershausen