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Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This is another step towards letting us remove the include of cache.h in
strbuf.c. It does mean that we also need to add includes of abspath.h
in a number of C files.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Dozens of files made use of gettext functions, without explicitly
including gettext.h. This made it more difficult to find which files
could remove a dependence on cache.h. Make C files explicitly include
gettext.h if they are using it.
However, while compat/fsmonitor/fsm-ipc-darwin.c should also gain an
include of gettext.h, it was left out to avoid conflicting with an
in-flight topic.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We were leaking both the "struct strbuf" in prune_worktrees(), as well
as the "path" we got from should_prune_worktree(). Since these were
the only two uses of the "struct string_list" let's change it to a
"DUP" and push these to it with "string_list_append_nodup()".
For the string_list_append_nodup() we could also string_list_append()
the main_path.buf, and then strbuf_release(&main_path) right away. But
doing it this way avoids an allocation, as we already have the "struct
strbuf" prepared for appending to "kept".
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When the "repo" member was added to "the_index" in [1] the
repo_read_index() was made to populate it, but the unpopulated
"the_index" variable didn't get the same treatment.
Let's do that in initialize_the_repository() when we set it up, and
likewise for all of the current callers initialized an empty "struct
index_state".
This simplifies code that needs to deal with "the_index" or a custom
"struct index_state", we no longer need to second-guess this part of
the "index_state" deep in the stack. A recent example of such
second-guessing is the "istate->repo ? istate->repo : the_repository"
code in [2]. We can now simply use "istate->repo".
We're doing this by making use of the INDEX_STATE_INIT() macro (and
corresponding function) added in [3], which now have mandatory "repo"
arguments.
Because we now call index_state_init() in repository.c's
initialize_the_repository() we don't need to handle the case where we
have a "repo->index" whose "repo" member doesn't match the "repo"
we're setting up, i.e. the "Complete the double-reference" code in
repo_read_index() being altered here. That logic was originally added
in [1], and was working around the lack of what we now have in
initialize_the_repository().
For "fsmonitor-settings.c" we can remove the initialization of a NULL
"r" argument to "the_repository". This was added back in [4], and was
needed at the time for callers that would pass us the "r" from an
"istate->repo". Before this change such a change to
"fsmonitor-settings.c" would segfault all over the test suite (e.g. in
t0002-gitfile.sh).
This change has wider eventual implications for
"fsmonitor-settings.c". The reason the other lazy loading behavior in
it is required (starting with "if (!r->settings.fsmonitor) ..." is
because of the previously passed "r" being "NULL".
I have other local changes on top of this which move its configuration
reading to "prepare_repo_settings()" in "repo-settings.c", as we could
now start to rely on it being called for our "r". But let's leave all
of that for now, and narrowly remove this particular part of the
lazy-loading.
1. 1fd9ae517c4 (repository: add repo reference to index_state,
2021-01-23)
2. ee1f0c242ef (read-cache: add index.skipHash config option,
2023-01-06)
3. 2f6b1eb794e (cache API: add a "INDEX_STATE_INIT" macro/function,
add release_index(), 2023-01-12)
4. 1e0ea5c4316 (fsmonitor: config settings are repository-specific,
2022-03-25)
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Acked-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Hopefully in some not so distant future, we'll get advantages from always
initializing the "repo" member of the "struct index_state". To make
that easier let's introduce an initialization macro & function.
The various ad-hoc initialization of the structure can then be changed
over to it, and we can remove the various "0" assignments in
discard_index() in favor of calling index_state_init() at the end.
While not strictly necessary, let's also change the CALLOC_ARRAY() of
various "struct index_state *" to use an ALLOC_ARRAY() followed by
index_state_init() instead.
We're then adding the release_index() function and converting some
callers (including some of these allocations) over to it if they
either won't need to use their "struct index_state" again, or are just
about to call index_state_init().
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Acked-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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For a lot of uses of UNLEAK() it would be quite tricky to release the
memory involved, or we're missing the relevant *_(release|clear)()
functions. But in these cases we have them already, and can just
invoke them on the variable(s) involved, instead of UNLEAK().
For "builtin/worktree.c" the UNLEAK() was also added in [1], but the
struct member it's unleaking was removed in [2]. The only non-"int"
member of that structure is "const char *keep_locked", which comes to
us via "argv" or a string literal[3].
We have good visibility via the compiler and
tooling (e.g. SANITIZE=address) on bad free()-ing, but none on
UNLEAK() we don't need anymore. So let's prefer releasing the memory
when it's easy.
For "bugreport", "worktree" and "config" we need to start using a "ret
= ..." return pattern. For "builtin/bugreport.c" these UNLEAK() were
added in [4], and for "builtin/config.c" in [1].
For "config" the code seen here was the only user of the "value"
variable. For "ACTION_{RENAME,REMOVE}_SECTION" we need to be sure to
return the right exit code in the cases where we were relying on
falling through to the top-level.
I think there's still a use-case for UNLEAK(), but hat it's changed
since then. Using it so that "we can see the real leaks" is
counter-productive in these cases.
It's more useful to have UNLEAK() be a marker of the remaining odd
cases where it's hard to free() the memory for whatever reason. With
this change less than 20 of them remain in-tree.
1. 0e5bba53af7 (add UNLEAK annotation for reducing leak false
positives, 2017-09-08)
2. d861d34a6ed (worktree: remove extra members from struct add_opts,
2018-04-24)
3. 0db4961c49b (worktree: teach `add` to accept --reason <string> with
--lock, 2021-07-15)
4. 0e5bba53af7 and 00d8c311050 (commit: fix "author_ident" leak,
2022-05-12).
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
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Make the "worktree" -h output consistent with the *.txt version.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Avoid repeating the "-h" output for the "git worktree" command, and
instead define the usage of each subcommand with macros, so that the
"-h" output for the command itself can re-use those definitions. See
[1], [2] and [3] for prior art using the same pattern.
1. b25b727494f (builtin/multi-pack-index.c: define common usage with a
macro, 2021-03-30)
2. 8757b35d443 (commit-graph: define common usage with a macro,
2021-08-23)
3. 1e91d3faf6c (reflog: move "usage" variables and use macros,
2022-03-17)
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Fix various inconsistencies between command SYNOPSIS and the
corresponding -h output where our translatable labels didn't match
up.
In some cases we need to adjust the prose that follows the SYNOPSIS
accordingly, as it refers back to the changed label.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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'git worktree' parses its subcommands with a long list of if
statements. parse-options has just learned to parse subcommands, so
let's use that facility instead, with the benefits of shorter code,
handling missing or unknown subcommands, and listing subcommands for
Bash completion.
Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Start following-up on the rename mentioned in c7c4bdeccf3 (run-command
API: remove "env" member, always use "env_array", 2021-11-25) of
"env_array" to "env".
The "env_array" name was picked in 19a583dc39e (run-command: add
env_array, an optional argv_array for env, 2014-10-19) because "env"
was taken. Let's not forever keep the oddity of "*_array" for this
"struct strvec", but not for its "args" sibling.
This commit is almost entirely made with a coccinelle rule[1]. The
only manual change here is in run-command.h to rename the struct
member itself and to change "env_array" to "env" in the
CHILD_PROCESS_INIT initializer.
The rest of this is all a result of applying [1]:
* make contrib/coccinelle/run_command.cocci.patch
* patch -p1 <contrib/coccinelle/run_command.cocci.patch
* git add -u
1. cat contrib/coccinelle/run_command.pending.cocci
@@
struct child_process E;
@@
- E.env_array
+ E.env
@@
struct child_process *E;
@@
- E->env_array
+ E->env
I've avoided changing any comments and derived variable names here,
that will all be done in the next commit.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git worktree list --porcelain" did not c-quote pathnames and lock
reasons with unsafe bytes correctly, which is worked around by
introducing NUL terminated output format with "-z".
* pw/worktree-list-with-z:
worktree: add -z option for list subcommand
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Usage string fix.
* dp/worktree-repair-in-usage:
worktree: include repair cmd in usage
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Add a -z option to be used in conjunction with --porcelain that gives
NUL-terminated output. As 'worktree list --porcelain' does not quote
worktree paths this enables it to handle worktree paths that contain
newlines.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The worktree repair command was not added to the usage menu for the
worktree command. This commit adds the usage of 'worktree repair'
according to the existing docs.
Signed-off-by: Des Preston <despreston@gmail.com>
Acked-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Tighten the language around "working tree" and "worktree" in the
docs.
* ds/worktree-docs:
worktree: use 'worktree' over 'working tree'
worktree: use 'worktree' over 'working tree'
worktree: use 'worktree' over 'working tree'
worktree: use 'worktree' over 'working tree'
worktree: use 'worktree' over 'working tree'
worktree: use 'worktree' over 'working tree'
worktree: use 'worktree' over 'working tree'
worktree: extract checkout_worktree()
worktree: extract copy_sparse_checkout()
worktree: extract copy_filtered_worktree_config()
worktree: combine two translatable messages
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"git sparse-checkout" wants to work with per-worktree configuration,
but did not work well in a worktree attached to a bare repository.
* ds/sparse-checkout-requires-per-worktree-config:
config: make git_configset_get_string_tmp() private
worktree: copy sparse-checkout patterns and config on add
sparse-checkout: set worktree-config correctly
config: add repo_config_set_worktree_gently()
worktree: create init_worktree_config()
Documentation: add extensions.worktreeConfig details
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The ability to add the --no-checkout flag to 'git worktree' was added in
ef2a0ac9a0 (worktree: add: introduce --checkout option, 2016-03-29).
Recently, we noticed that add_worktree() is rather complicated, so
extract the logic for this checkout process to simplify the method.
Signed-off-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This logic was introduced by 5325591 (worktree: copy sparse-checkout
patterns and config on add, 2022-02-07), but some feedback came in that
the add_worktree() method was already too complex. It is better to
extract this logic into a helper method to reduce this complexity.
Reported-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This logic was introduced by 5325591 (worktree: copy sparse-checkout
patterns and config on add, 2022-02-07), but some feedback came in that
the add_worktree() method was already too complex. It is better to
extract this logic into a helper method to reduce this complexity.
Reported-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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These two messages differ only by the config key name, which should not
be translated. Extract those keys so the messages can be translated from
the same string.
Reported-by: Jean-Noël AVILA <jn.avila@free.fr>
Signed-off-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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More "config-based hooks".
* ab/config-based-hooks-2:
run-command: remove old run_hook_{le,ve}() hook API
receive-pack: convert push-to-checkout hook to hook.h
read-cache: convert post-index-change to use hook.h
commit: convert {pre-commit,prepare-commit-msg} hook to hook.h
git-p4: use 'git hook' to run hooks
send-email: use 'git hook run' for 'sendemail-validate'
git hook run: add an --ignore-missing flag
hooks: convert worktree 'post-checkout' hook to hook library
hooks: convert non-worktree 'post-checkout' hook to hook library
merge: convert post-merge to use hook.h
am: convert applypatch-msg to use hook.h
rebase: convert pre-rebase to use hook.h
hook API: add a run_hooks_l() wrapper
am: convert {pre,post}-applypatch to use hook.h
gc: use hook library for pre-auto-gc hook
hook API: add a run_hooks() wrapper
hook: add 'run' subcommand
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When adding a new worktree, it is reasonable to expect that we want to
use the current set of sparse-checkout settings for that new worktree.
This is particularly important for repositories where the worktree would
become too large to be useful. This is even more important when using
partial clone as well, since we want to avoid downloading the missing
blobs for files that should not be written to the new worktree.
The only way to create such a worktree without this intermediate step of
expanding the full worktree is to copy the sparse-checkout patterns and
config settings during 'git worktree add'. Each worktree has its own
sparse-checkout patterns, and the default behavior when the
sparse-checkout file is missing is to include all paths at HEAD. Thus,
we need to have patterns from somewhere, they might as well be the
current worktree's patterns. These are then modified independently in
the future.
In addition to the sparse-checkout file, copy the worktree config file
if worktree config is enabled and the file exists. This will copy over
any important settings to ensure the new worktree behaves the same as
the current one. The only exception we must continue to make is that
core.bare and core.worktree should become unset in the worktree's config
file.
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Move the running of the 'post-checkout' hook away from run-command.h
to the new hook.h library in builtin/worktree.c. For this special case
we need a change to the hook API to teach it to run the hook from a
given directory.
We cannot skip the "absolute_path" flag and just check if "dir" is
specified as we'd then fail to find our hook in the new dir we'd
chdir() to. We currently don't have a use-case for running a hook not
in our "base" repository at a given absolute path, so let's have "dir"
imply absolute_path(find_hook(hook_name)).
Signed-off-by: Emily Shaffer <emilyshaffer@google.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Acked-by: Emily Shaffer <emilyshaffer@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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They are all replaced by "the option '%s' requires '%s'", which is a
new string but replaces 17 previous unique strings.
Signed-off-by: Jean-Noël Avila <jn.avila@free.fr>
Reviewed-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Use placeholders for constant tokens. The strings are turned into
"cannot be used together"
Signed-off-by: Jean-Noël Avila <jn.avila@free.fr>
Reviewed-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Use static strings for constant parts of the sentences. They are all
turned into "cannot be used together".
Signed-off-by: Jean-Noël Avila <jn.avila@free.fr>
Reviewed-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git worktree add" showed "Preparing worktree" message to the
standard output stream, but when it failed, the message from die()
went to the standard error stream. Depending on the order the
stdio streams are flushed at the program end, this resulted in
confusing output. It has been corrected by sending all the chatty
messages to the standard error stream.
* es/worktree-chatty-to-stderr:
git-worktree.txt: add missing `-v` to synopsis for `worktree list`
worktree: send "chatty" messages to stderr
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The order in which the stdout and stderr streams are flushed is not
guaranteed to be the same across platforms or `libc` implementations.
This lack of determinism can lead to anomalous and potentially confusing
output if normal (stdout) output is flushed after error (stderr) output.
For instance, the following output which clearly indicates a failure due
to a fatal error:
% git worktree add ../foo bar
Preparing worktree (checking out 'bar')
fatal: 'bar' is already checked out at '.../wherever'
has been reported[1] on Microsoft Windows to appear as:
% git worktree add ../foo bar
fatal: 'bar' is already checked out at '.../wherever'
Preparing worktree (checking out 'bar')
which may confuse the reader into thinking that the command somehow
recovered and ran to completion despite the error.
This problem crops up because the "chatty" status message "Preparing
worktree" is sent to stdout, whereas the "fatal" error message is sent
to stderr. One way to fix this would be to flush stdout manually before
git-worktree reports any errors to stderr.
However, common practice in Git is for "chatty" messages to be sent to
stderr. Therefore, a more appropriate fix is to adjust git-worktree to
conform to that practice by sending its "chatty" messages to stderr
rather than stdout as is currently the case.
There may be concern that relocating messages from stdout to stderr
could break existing tooling, however, these messages are already
internationalized, thus are unstable. And, indeed, the "Preparing
worktree" message has already been the subject of somewhat significant
changes in 2c27002a0a (worktree: improve message when creating a new
worktree, 2018-04-24). Moreover, there is existing precedent, such as
68b939b2f0 (clone: send diagnostic messages to stderr, 2013-09-18) which
likewise relocated "chatty" messages from stdout to stderr for
git-clone.
[1]: https://lore.kernel.org/git/CA+34VNLj6VB1kCkA=MfM7TZR+6HgqNi5-UaziAoCXacSVkch4A@mail.gmail.com/T/
Reported-by: Baruch Burstein <bmburstein@gmail.com>
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Remove the "env" member from "struct child_process" in favor of always
using the "env_array". As with the preceding removal of "argv" in
favor of "args" this gets rid of current and future oddities around
memory management at the API boundary (see the amended API docs).
For some of the conversions we can replace patterns like:
child.env = env->v;
With:
strvec_pushv(&child.env_array, env->v);
But for others we need to guard the strvec_pushv() with a NULL check,
since we're not passing in the "v" member of a "struct strvec",
e.g. in the case of tmp_objdir_env()'s return value.
Ideally we'd rename the "env_array" member to simply "env" as a
follow-up, since it and "args" are now inconsistent in not having an
"_array" suffix, and seemingly without any good reason, unless we look
at the history of how they came to be.
But as we've currently got 122 in-tree hits for a "git grep env_array"
let's leave that for now (and possibly forever). Doing that rename
would be too disruptive.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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add_worktree() reuses a `child_process` for three run_command()
invocations, but to do so, it has overly-intimate knowledge of
run-command.c internals. In particular, it knows that it must reset
child_process::argv to NULL for each subsequent invocation[*] in order
for start_command() to latch the newly-populated child_process::args for
each invocation, even though this behavior is not a part of the
documented API. Beyond having overly-intimate knowledge of run-command.c
internals, the reuse of one `child_process` for three run_command()
invocations smells like an unnecessary micro-optimization. Therefore,
stop sharing one `child_process` and instead use a new one for each
run_command() call.
[*] If child_process::argv is not reset to NULL, then subsequent
run_command() invocations will instead incorrectly access a dangling
pointer to freed memory which had been allocated by child_process::args
on the previous run. This is due to the following code in
start_command():
if (!cmd->argv)
cmd->argv = cmd->args.v;
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Move the find_hook() function from run-command.c to a new hook.c
library. This change establishes a stub library that's pretty
pointless right now, but will see much wider use with Emily Shaffer's
upcoming "configuration-based hooks" series.
Eventually all the hook related code will live in hook.[ch]. Let's
start that process by moving the simple find_hook() function over
as-is.
Signed-off-by: Emily Shaffer <emilyshaffer@google.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The default reason stored in the lock file, "added with --lock",
is unlikely to be what the user would have given in a separate
`git worktree lock` command. Allowing `--reason` to be specified
along with `--lock` when adding a working tree gives the user control
over the reason for locking without needing a second command.
Signed-off-by: Stephen Manz <smanz@alum.mit.edu>
Reviewed-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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- default lock string, "added with --lock"
- temporary lock string, "initializing"
Signed-off-by: Stephen Manz <smanz@alum.mit.edu>
Reviewed-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git clean" and "git ls-files -i" had confusion around working on
or showing ignored paths inside an ignored directory, which has
been corrected.
* en/dir-traversal:
dir: introduce readdir_skip_dot_and_dotdot() helper
dir: update stale description of treat_directory()
dir: traverse into untracked directories if they may have ignored subfiles
dir: avoid unnecessary traversal into ignored directory
t3001, t7300: add testcase showcasing missed directory traversal
t7300: add testcase showing unnecessary traversal into ignored directory
ls-files: error out on -i unless -o or -c are specified
dir: report number of visited directories and paths with trace2
dir: convert trace calls to trace2 equivalents
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Many places in the code were doing
while ((d = readdir(dir)) != NULL) {
if (is_dot_or_dotdot(d->d_name))
continue;
...process d...
}
Introduce a readdir_skip_dot_and_dotdot() helper to make that a one-liner:
while ((d = readdir_skip_dot_and_dotdot(dir)) != NULL) {
...process d...
}
This helper particularly simplifies checks for empty directories.
Also use this helper in read_cached_dir() so that our statistics are
consistent across platforms. (In other words, read_cached_dir() should
have been using is_dot_or_dotdot() and skipping such entries, but did
not and left it to treat_path() to detect and mark such entries as
path_none.)
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Up until recently, object IDs did not have an algorithm member, only a
hash. Consequently, it was possible to share one null (all-zeros)
object ID among all hash algorithms. Now that we're going to be
handling objects from multiple hash algorithms, it's important to make
sure that all object IDs have a correct algorithm field.
Introduce a per-algorithm null OID, and add it to struct hash_algo.
Introduce a wrapper function as well, and use it everywhere we used to
use the null_oid constant.
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Make sure that we release the temporary strbuf during dwim_branch() for
all codepaths (and not just for the early return).
This leak appears to have been introduced in:
f60a7b763f (worktree: teach "add" to check out existing branches, 2018-04-24)
Note that UNLEAK(branchname) is still needed: the returned result is
used in add(), and is stored in a pointer which is used to point at one
of:
- a string literal ("HEAD")
- member of argv (whatever the user specified in their invocation)
- or our newly allocated string returned from dwim_branch()
Fixing the branchname leak isn't impossible, but does not seem
worthwhile given that add() is called directly from cmd_main(), and
cmd_main() returns immediately thereafter - UNLEAK is good enough.
This leak was found when running t0001 with LSAN, see also LSAN output
below:
Direct leak of 60 byte(s) in 1 object(s) allocated from:
#0 0x49a859 in realloc /home/abuild/rpmbuild/BUILD/llvm-11.0.0.src/build/../projects/compiler-rt/lib/asan/asan_malloc_linux.cpp:164:3
#1 0x9ab076 in xrealloc /home/ahunt/oss-fuzz/git/wrapper.c:126:8
#2 0x939fcd in strbuf_grow /home/ahunt/oss-fuzz/git/strbuf.c:98:2
#3 0x93af53 in strbuf_splice /home/ahunt/oss-fuzz/git/strbuf.c:239:3
#4 0x83559a in strbuf_check_branch_ref /home/ahunt/oss-fuzz/git/object-name.c:1593:2
#5 0x6988b9 in dwim_branch /home/ahunt/oss-fuzz/git/builtin/worktree.c:454:20
#6 0x695f8f in add /home/ahunt/oss-fuzz/git/builtin/worktree.c:525:19
#7 0x694a04 in cmd_worktree /home/ahunt/oss-fuzz/git/builtin/worktree.c:1036:10
#8 0x4cd60d in run_builtin /home/ahunt/oss-fuzz/git/git.c:453:11
#9 0x4cb2da in handle_builtin /home/ahunt/oss-fuzz/git/git.c:704:3
#10 0x4ccc37 in run_argv /home/ahunt/oss-fuzz/git/git.c:771:4
#11 0x4cac29 in cmd_main /home/ahunt/oss-fuzz/git/git.c:902:19
#12 0x69caee in main /home/ahunt/oss-fuzz/git/common-main.c:52:11
#13 0x7f7b7dd10349 in __libc_start_main (/lib64/libc.so.6+0x24349)
Signed-off-by: Andrzej Hunt <ajrhunt@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git worktree list" annotates each worktree according to its state such
as "prunable" or "locked", however it is not immediately obvious why
these worktrees are being annotated. For prunable worktrees a reason
is available that is returned by should_prune_worktree() and for locked
worktrees a reason might be available provided by the user via `lock`
command.
Let's teach "git worktree list" a --verbose mode that outputs the reason
why the worktrees are being annotated. The reason is a text that can take
virtually any size and appending the text on the default columned format
will make it difficult to extend the command with other annotations and
not fit nicely on the screen. In order to address this shortcoming the
annotation is then moved to the next line indented followed by the reason
If the reason is not available the annotation stays on the same line as
the worktree itself.
The output of "git worktree list" with verbose becomes like so:
$ git worktree list --verbose
...
/path/to/locked-no-reason acb124 [branch-a] locked
/path/to/locked-with-reason acc125 [branch-b]
locked: worktree with a locked reason
/path/to/prunable-reason ace127 [branch-d]
prunable: gitdir file points to non-existent location
...
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Rafael Silva <rafaeloliveira.cs@gmail.com>
Reviewed-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The "git worktree list" command shows the absolute path to the worktree,
the commit that is checked out, the name of the branch, and a "locked"
annotation if the worktree is locked, however, it does not indicate
whether the worktree is prunable.
The "prune" command will remove a worktree if it is prunable unless
`--dry-run` option is specified. This could lead to a worktree being
removed without the user realizing before it is too late, in case the
user forgets to pass --dry-run for instance. If the "list" command shows
which worktree is prunable, the user could verify before running
"git worktree prune" and hopefully prevents the working tree to be
removed "accidentally" on the worse case scenario.
Let's teach "git worktree list" to show when a worktree is a prunable
candidate for both default and porcelain format.
In the default format a "prunable" text is appended:
$ git worktree list
/path/to/main aba123 [main]
/path/to/linked 123abc [branch-a]
/path/to/prunable ace127 (detached HEAD) prunable
In the --porcelain format a prunable label is added followed by
its reason:
$ git worktree list --porcelain
...
worktree /path/to/prunable
HEAD abc1234abc1234abc1234abc1234abc1234abc12
detached
prunable gitdir file points to non-existent location
...
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Rafael Silva <rafaeloliveira.cs@gmail.com>
Reviewed-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Commit c57b3367be (worktree: teach `list` to annotate locked worktree,
2020-10-11) taught "git worktree list" to annotate locked worktrees by
appending "locked" text to its output, however, this is not listed in
the --porcelain format.
Teach "list --porcelain" to do the same and add a "locked" attribute
followed by its reason, thus making both default and porcelain format
consistent. If the locked reason is not available then only "locked"
is shown.
The output of the "git worktree list --porcelain" becomes like so:
$ git worktree list --porcelain
...
worktree /path/to/locked
HEAD 123abcdea123abcd123acbd123acbda123abcd12
detached
locked
worktree /path/to/locked-with-reason
HEAD abc123abc123abc123abc123abc123abc123abc1
detached
locked reason why it is locked
...
In porcelain mode, if the lock reason contains special characters
such as newlines, they are escaped with backslashes and the entire
reason is enclosed in double quotes. For example:
$ git worktree list --porcelain
...
locked "worktree's path mounted in\nremovable device"
...
Furthermore, let's update the documentation to state that some
attributes in the porcelain format might be listed alone or together
with its value depending whether the value is available or not. Thus
documenting the case of the new "locked" attribute.
Helped-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Rafael Silva <rafaeloliveira.cs@gmail.com>
Reviewed-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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worktree_lock_reason() aborts with an assertion failure when called on
the main worktree since locking the main worktree is nonsensical. Not
only is this behavior undocumented, thus callers might not even be aware
that the call could potentially crash the program, but it also forces
clients to be extra careful:
if (!is_main_worktree(wt) && worktree_locked_reason(...))
...
Since we know that locking makes no sense in the context of the main
worktree, we can simply return false for the main worktree, thus making
client code less complex by eliminating the need for the callers to have
inside knowledge about the implementation:
if (worktree_lock_reason(...))
...
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Rafael Silva <rafaeloliveira.cs@gmail.com>
Reviewed-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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As part of teaching "git worktree list" to annotate worktree that is a
candidate for pruning, let's move should_prune_worktree() from
builtin/worktree.c to worktree.c in order to make part of the worktree
public API.
should_prune_worktree() knows how to select the given worktree for
pruning based on an expiration date, however the expiration value is
stored in a static file-scope variable and it is not local to the
function. In order to move the function, teach should_prune_worktree()
to take the expiration date as an argument and document the new
parameter that is not immediately obvious.
Also, change the function comment to clearly state that the worktree's
path is returned in `wtpath` argument.
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Rafael Silva <rafaeloliveira.cs@gmail.com>
Reviewed-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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`git worktree repair` knows how to repair the two-way links between the
repository and a worktree as long as a link in one or the other
direction is sound. For instance, if a linked worktree is moved (without
using `git worktree move`), repair is possible because the worktree
still knows the location of the repository even though the repository no
longer knows where the worktree is. Similarly, if the repository is
moved, repair is possible since the repository still knows the locations
of the worktrees even though the worktrees no longer know where the
repository is.
However, if both the repository and the worktrees are moved, then links
are severed in both directions, and no repair is possible. This is the
case even when the new worktree locations are specified as arguments to
`git worktree repair`. The reason for this limitation is twofold. First,
when `repair` consults the worktree's gitfile (/path/to/worktree/.git)
to determine the corresponding <repo>/worktrees/<id>/gitdir file to fix,
<repo> is the old path to the repository, thus it is unable to fix the
`gitdir` file at its new location since it doesn't know where it is.
Second, when `repair` consults <repo>/worktrees/<id>/gitdir to find the
location of the worktree's gitfile (/path/to/worktree/.git), the path
recorded in `gitdir` is the old location of the worktree's gitfile, thus
it is unable to repair the gitfile since it doesn't know where it is.
Fix these shortcomings by teaching `repair` to attempt to infer the new
location of the <repo>/worktrees/<id>/gitdir file when the location
recorded in the worktree's gitfile has become stale but the file is
otherwise well-formed. The inference is intentionally simple-minded.
For each worktree path specified as an argument, `git worktree repair`
manually reads the ".git" gitfile at that location and, if it is
well-formed, extracts the <id>. It then searches for a corresponding
<id> in <repo>/worktrees/ and, if found, concludes that there is a
reasonable match and updates <repo>/worktrees/<id>/gitdir to point at
the specified worktree path. In order for <repo> to be known, `git
worktree repair` must be run in the main worktree or bare repository.
`git worktree repair` first attempts to repair each incoming
/path/to/worktree/.git gitfile to point at the repository, and then
attempts to repair outgoing <repo>/worktrees/<id>/gitdir files to point
at the worktrees. This sequence was chosen arbitrarily when originally
implemented since the order of fixes is immaterial as long as one side
of the two-way link between the repository and a worktree is sound.
However, for this new repair technique to work, the order must be
reversed. This is because the new inference mechanism, when it is
successful, allows the outgoing <repo>/worktrees/<id>/gitdir file to be
repaired, thus fixing one side of the two-way link. Once that side is
fixed, the other side can be fixed by the existing repair mechanism,
hence the order of repairs is now significant.
Two safeguards are employed to avoid hijacking a worktree from a
different repository if the user accidentally specifies a foreign
worktree as an argument. The first, as described above, is that it
requires an <id> match between the repository and the worktree. That
itself is not foolproof for preventing hijack, so the second safeguard
is that the inference will only kick in if the worktree's
/path/to/worktree/.git gitfile does not point at a repository.
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Fix formulation of an error message with two placeholders in "git
worktree add" subcommand.
* mt/worktree-error-message-fix:
worktree: fix order of arguments in error message
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`git worktree add` (without --force) errors out when given a path
that is already registered as a worktree and the path is missing on
disk. But the `cmd` and `path` strings are switched on the error
message. Let's fix that.
Signed-off-by: Matheus Tavares <matheus.bernardino@usp.br>
Reviewed-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The "git worktree list" shows the absolute path to the working tree,
the commit that is checked out and the name of the branch. It is not
immediately obvious which of the worktrees, if any, are locked.
"git worktree remove" refuses to remove a locked worktree with
an error message. If "git worktree list" told which worktrees
are locked in its output, the user would not even attempt to
remove such a worktree, or would realize that
"git worktree remove -f -f <path>" is required.
Teach "git worktree list" to append "locked" to its output.
The output from the command becomes like so:
$ git worktree list
/path/to/main abc123 [master]
/path/to/worktree 456def (detached HEAD)
/path/to/locked-worktree 123abc (detached HEAD) locked
Helped-by: Junio C Hamano <gitster@pobox.com>
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Rafael Silva <rafaeloliveira.cs@gmail.com>
Reviewed-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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