Convert all instances of get_object_hash to use an appropriate reference
to the hash member of the oid member of struct object. This provides no
functional change, as it is essentially a macro substitution.
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Jeff King <peff@peff.net>
Convert most instances where the sha1 member of struct object is
dereferenced to use get_object_hash. Most instances that are passed to
functions that have versions taking struct object_id, such as
get_sha1_hex/get_oid_hex, or instances that can be trivially converted
to use struct object_id instead, are not converted.
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Jeff King <peff@peff.net>
worktree.c contains functions to work with and get information from
worktrees. This introduction moves functions related to worktrees
from branch.c into worktree.c
Signed-off-by: Michael Rappazzo <rappazzo@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When linked worktree is used, simultaneous "notes merge" instances
for the same ref in refs/notes/* are prevented from stomping on
each other.
* dt/notes-multiple:
notes: handle multiple worktrees
worktrees: add find_shared_symref
git_path() and mkpath() are handy helper functions but it is easy
to misuse, as the callers need to be careful to keep the number of
active results below 4. Their uses have been reduced.
* jk/git-path:
memoize common git-path "constant" files
get_repo_path: refactor path-allocation
find_hook: keep our own static buffer
refs.c: remove_empty_directories can take a strbuf
refs.c: avoid git_path assignment in lock_ref_sha1_basic
refs.c: avoid repeated git_path calls in rename_tmp_log
refs.c: simplify strbufs in reflog setup and writing
path.c: drop git_path_submodule
refs.c: remove extra git_path calls from read_loose_refs
remote.c: drop extraneous local variable from migrate_file
prefer mkpathdup to mkpath in assignments
prefer git_pathdup to git_path in some possibly-dangerous cases
add_to_alternates_file: don't add duplicate entries
t5700: modernize style
cache.h: complete set of git_path_submodule helpers
cache.h: clarify documentation for git_path, et al
The "new-worktree-mode" hack in "checkout" that was added in
nd/multiple-work-trees topic has been removed by updating the
implementation of new "worktree add".
* es/worktree-add-cleanup: (25 commits)
Documentation/git-worktree: fix duplicated 'from'
Documentation/config: mention "now" and "never" for 'expire' settings
Documentation/git-worktree: fix broken 'linkgit' invocation
checkout: drop intimate knowledge of newly created worktree
worktree: populate via "git reset --hard" rather than "git checkout"
worktree: avoid resolving HEAD unnecessarily
worktree: make setup of new HEAD distinct from worktree population
worktree: detect branch-name/detached and error conditions locally
worktree: add_worktree: construct worktree-population command locally
worktree: elucidate environment variables intended for child processes
worktree: make branch creation distinct from worktree population
worktree: add: suppress auto-vivication with --detach and no <branch>
worktree: make --detach mutually exclusive with -b/-B
worktree: introduce options container
worktree: simplify new branch (-b/-B) option checking
worktree: improve worktree setup message
branch: publish die_if_checked_out()
checkout: teach check_linked_checkout() about symbolic link HEAD
checkout: check_linked_checkout: simplify symref parsing
checkout: check_linked_checkout: improve "already checked out" aesthetic
...
Add a new function, find_shared_symref, which contains the heart of
die_if_checked_out, but works for any symref, not just HEAD. Refactor
die_if_checked_out to use the same infrastructure as
find_shared_symref.
Soon, we will use find_shared_symref to protect notes merges in
worktrees.
Signed-off-by: David Turner <dturner@twopensource.com>
Reviewed-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
One of the most common uses of git_path() is to pass a
constant, like git_path("MERGE_MSG"). This has two
drawbacks:
1. The return value is a static buffer, and the lifetime
is dependent on other calls to git_path, etc.
2. There's no compile-time checking of the pathname. This
is OK for a one-off (after all, we have to spell it
correctly at least once), but many of these constant
strings appear throughout the code.
This patch introduces a series of functions to "memoize"
these strings, which are essentially globals for the
lifetime of the program. We compute the value once, take
ownership of the buffer, and return the cached value for
subsequent calls. cache.h provides a helper macro for
defining these functions as one-liners, and defines a few
common ones for global use.
Using a macro is a little bit gross, but it does nicely
document the purpose of the functions. If we need to touch
them all later (e.g., because we learned how to change the
git_dir variable at runtime, and need to invalidate all of
the stored values), it will be much easier to have the
complete list.
Note that the shared-global functions have separate, manual
declarations. We could do something clever with the macros
(e.g., expand it to a declaration in some places, and a
declaration _and_ a definition in path.c). But there aren't
that many, and it's probably better to stay away from
too-magical macros.
Likewise, if we abandon the C preprocessor in favor of
generating these with a script, we could get much fancier.
E.g., normalizing "FOO/BAR-BAZ" into "git_path_foo_bar_baz".
But the small amount of saved typing is probably not worth
the resulting confusion to readers who want to grep for the
function's definition.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
git-worktree currently conflates new branch creation, setting of HEAD in
the new wortkree, and worktree population into a single sub-invocation
of git-checkout. However, these operations will eventually be separated,
and git-worktree itself will need to be able to detect if the branch is
already checked out elsewhere, rather than relying upon git-branch to
make this determination, so publish die_if_checked_out().
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Instead, verify the reference's old value if and only if old_sha1 is
non-NULL.
ref_transaction_delete() will get the same treatment in a moment.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
resolve_ref_unsafe takes a boolean argument for reading (a nonexistent ref
resolves successfully for writing but not for reading). Change this to be
a flags field instead, and pass the new constant RESOLVE_REF_READING when
we want this behaviour.
While at it, swap two of the arguments in the function to put output
arguments at the end. As a nice side effect, this ensures that we can
catch callers that were unaware of the new API so they can be audited.
Give the wrapper functions resolve_refdup and read_ref_full the same
treatment for consistency.
Signed-off-by: Ronnie Sahlberg <sahlberg@google.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Change the ref transaction API so that we pass the reflog message to the
create/delete/update functions instead of to ref_transaction_commit.
This allows different reflog messages for each ref update in a multi-ref
transaction.
Signed-off-by: Ronnie Sahlberg <sahlberg@google.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The second batch of the transactional ref update series.
* rs/ref-transaction-1: (22 commits)
update-ref --stdin: pass transaction around explicitly
update-ref --stdin: narrow scope of err strbuf
refs.c: make delete_ref use a transaction
refs.c: make prune_ref use a transaction to delete the ref
refs.c: remove lock_ref_sha1
refs.c: remove the update_ref_write function
refs.c: remove the update_ref_lock function
refs.c: make lock_ref_sha1 static
walker.c: use ref transaction for ref updates
fast-import.c: use a ref transaction when dumping tags
receive-pack.c: use a reference transaction for updating the refs
refs.c: change update_ref to use a transaction
branch.c: use ref transaction for all ref updates
fast-import.c: change update_branch to use ref transactions
sequencer.c: use ref transactions for all ref updates
commit.c: use ref transactions for updates
replace.c: use the ref transaction functions for updates
tag.c: use ref transactions when doing updates
refs.c: add transaction.status and track OPEN/CLOSED
refs.c: make ref_transaction_begin take an err argument
...
Change create_branch to use a ref transaction when creating the new branch.
This also fixes a race condition in the old code where two concurrent
create_branch could race since the lock_any_ref_for_update/write_ref_sha1
did not protect against the ref already existing. I.e. one thread could end up
overwriting a branch even if the forcing flag is false.
Signed-off-by: Ronnie Sahlberg <sahlberg@google.com>
Reviewed-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Use `git_config_get_string()` instead of `git_config()` to take advantage of
the config-set API which provides a cleaner control flow. While we are at
it, return -1 if we find no value for the queried variable. Original code
returned 0 for all cases, which was checked by `add_branch_desc()` in
fmt-merge-msg.c resulting in addition of a spurious newline to the `out`
strbuf. Now, the newline addition is skipped as -1 is returned to the caller
if no value is found.
Signed-off-by: Tanay Abhra <tanayabh@gmail.com>
Reviewed-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Currently `git_config()` returns an integer signifying an error code.
During rewrites of the function most of the code was shifted to
`git_config_with_options()`. `git_config_with_options()` normally
returns positive values if its `config_source` parameter is set as NULL,
as most errors are fatal, and non-fatal potential errors are guarded
by "if" statements that are entered only when no error is possible.
Still a negative value can be returned in case of race condition between
`access_or_die()` & `git_config_from_file()`. Also, all callers of
`git_config()` ignore the return value except for one case in branch.c.
Change `git_config()` return value to void and make it die if it receives
a negative value from `git_config_with_options()`.
Original-patch-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Tanay Abhra <tanayabh@gmail.com>
Reviewed-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The skip_prefix() function returns a pointer to the content
past the prefix, or NULL if the prefix was not found. While
this is nice and simple, in practice it makes it hard to use
for two reasons:
1. When you want to conditionally skip or keep the string
as-is, you have to introduce a temporary variable.
For example:
tmp = skip_prefix(buf, "foo");
if (tmp)
buf = tmp;
2. It is verbose to check the outcome in a conditional, as
you need extra parentheses to silence compiler
warnings. For example:
if ((cp = skip_prefix(buf, "foo"))
/* do something with cp */
Both of these make it harder to use for long if-chains, and
we tend to use starts_with() instead. However, the first line
of "do something" is often to then skip forward in buf past
the prefix, either using a magic constant or with an extra
strlen(3) (which is generally computed at compile time, but
means we are repeating ourselves).
This patch refactors skip_prefix() to return a simple boolean,
and to provide the pointer value as an out-parameter. If the
prefix is not found, the out-parameter is untouched. This
lets you write:
if (skip_prefix(arg, "foo ", &arg))
do_foo(arg);
else if (skip_prefix(arg, "bar ", &arg))
do_bar(arg);
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The install_branch_config() function reimplemented the skip_prefix()
function inline.
Reported-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Brian Gesiak <modocache@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Since commit 6f084a56 the length of a newly tracked branch name was limited
to 1019 = 1024 - 7 - 7 - 1 characters, a bound derived by having to store
this name in a char[1024] called key with two strings of length at most 7
and a '\0' character.
This was no longer necessary as of commit a9f2c136, which uses a strbuf
(documented in Documentation/technical/api-strbuf.txt) to store this value.
Remove this unneeded check to allow branch names longer than 1019
characters.
Signed-off-by: Jacopo Notarstefano <jacopo.notarstefano@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Leaving only the function definitions and declarations so that any
new topic in flight can still make use of the old functions, replace
existing uses of the prefixcmp() and suffixcmp() with new API
functions.
The change can be recreated by mechanically applying this:
$ git grep -l -e prefixcmp -e suffixcmp -- \*.c |
grep -v strbuf\\.c |
xargs perl -pi -e '
s|!prefixcmp\(|starts_with\(|g;
s|prefixcmp\(|!starts_with\(|g;
s|!suffixcmp\(|ends_with\(|g;
s|suffixcmp\(|!ends_with\(|g;
'
on the result of preparatory changes in this series.
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git branch --track" had a minor regression in v1.8.3.2 and later
that made it impossible to base your local work on anything but a
local branch of the upstream repository you are tracking from.
* jh/checkout-auto-tracking:
t3200: fix failure on case-insensitive filesystems
branch.c: Relax unnecessary requirement on upstream's remote ref name
t3200: Add test demonstrating minor regression in 41c21f2
Refer to branch.<name>.remote/merge when documenting --track
t3200: Minor fix when preparing for tracking failure
t2024: Fix &&-chaining and a couple of typos
Give "update-refs" a "--stdin" option to read multiple update
requests and perform them in an all-or-none fashion.
* bk/refs-multi-update:
update-ref: add test cases covering --stdin signature
update-ref: support multiple simultaneous updates
refs: add update_refs for multiple simultaneous updates
refs: add function to repack without multiple refs
refs: factor delete_ref loose ref step into a helper
refs: factor update_ref steps into helpers
refs: report ref type from lock_any_ref_for_update
reset: rename update_refs to reset_refs
Fix a minor regression in v1.8.3.2 and later that made it
impossible to base your local work on anything but a local branch
of the upstream repository you are tracking from.
* jh/checkout-auto-tracking:
t3200: fix failure on case-insensitive filesystems
branch.c: Relax unnecessary requirement on upstream's remote ref name
t3200: Add test demonstrating minor regression in 41c21f2
Refer to branch.<name>.remote/merge when documenting --track
t3200: Minor fix when preparing for tracking failure
t2024: Fix &&-chaining and a couple of typos
When creating an upstream relationship, we use the configured remotes and
their refspecs to determine the upstream configuration settings
branch.<name>.remote and branch.<name>.merge. However, if the matching
refspec does not have refs/heads/<something> on the remote side, we end
up rejecting the match, and failing the upstream configuration.
It could be argued that when we set up an branch's upstream, we want that
upstream to also be a proper branch in the remote repo. Although this is
typically the common case, there are cases (as demonstrated by the previous
patch in this series) where this requirement prevents a useful upstream
relationship from being formed. Furthermore:
- We have fundamentally no say in how the remote repo have organized its
branches. The remote repo may put branches (or branch-like constructs
that are insteresting for downstreams to track) outside refs/heads/*.
- The user may intentionally want to track a non-branch from a remote
repo, by using a branch and configured upstream in the local repo.
Relaxing the checking to only require a matching remote/refspec allows the
testcase introduced in the previous patch to succeed, and has no negative
effect on the rest of the test suite.
This patch fixes a behavior (arguably a regression) first introduced in
41c21f2 (branch.c: Validate tracking branches with refspecs instead of
refs/remotes/*) on 2013-04-21 (released in >= v1.8.3.2).
Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Expose lock_ref_sha1_basic's type_p argument to callers of
lock_any_ref_for_update. Update all call sites to ignore it by passing
NULL for now.
Signed-off-by: Brad King <brad.king@kitware.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Update "git checkout foo" that DWIMs the intended "upstream" and
turns it into "git checkout -t -b foo remotes/origin/foo" to
correctly take existing remote definitions into account.
The remote "origin" may be what uniquely map its own branch to
remotes/some/where/foo but that some/where may not be "origin".
* jh/checkout-auto-tracking:
glossary: Update and rephrase the definition of a remote-tracking branch
branch.c: Validate tracking branches with refspecs instead of refs/remotes/*
t9114.2: Don't use --track option against "svn-remote"-tracking branches
t7201.24: Add refspec to keep --track working
t3200.39: tracking setup should fail if there is no matching refspec.
checkout: Use remote refspecs when DWIMming tracking branches
t2024: Show failure to use refspec when DWIMming remote branch names
t2024: Add tests verifying current DWIM behavior of 'git checkout <branch>'
The current code for validating tracking branches (e.g. the argument to
the -t/--track option) hardcodes refs/heads/* and refs/remotes/* as the
potential locations for tracking branches. This works with the refspecs
created by "git clone" or "git remote add", but is suboptimal in other
cases:
- If "refs/remotes/foo/bar" exists without any association to a remote
(i.e. there is no remote named "foo", or no remote with a refspec
that matches "refs/remotes/foo/bar"), then it is impossible to set up
a valid upstream config that tracks it. Currently, the code defaults
to using "refs/remotes/foo/bar" from repo "." as the upstream, which
works, but is probably not what the user had in mind when running
"git branch baz --track foo/bar".
- If the user has tweaked the fetch refspec for a remote to put its
remote-tracking branches outside of refs/remotes/*, e.g. by running
git config remote.foo.fetch "+refs/heads/*:refs/foo_stuff/*"
then the current code will refuse to use its remote-tracking branches
as --track arguments, since they do not match refs/remotes/*.
This patch removes the "refs/remotes/*" requirement for upstream branches,
and replaces it with explicit checking of the refspecs for each remote to
determine whether a given --track argument is a valid remote-tracking
branch. This solves both of the above problems, since the matching refspec
guarantees that there is a both a remote name and a remote branch name
that can be used for the upstream config.
However, this means that refs located within refs/remotes/* without a
corresponding remote/refspec will no longer be usable as upstreams.
The few existing tests which depended on this behavioral quirk has
already been fixed in the preceding patches.
This patch fixes the last remaining test failure in t2024-checkout-dwim.
Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If the user requests to --set-upstream-to a branch that does
not exist, then either:
1. It was a typo.
2. They thought the branch should exist.
In case (1), there is not much we can do beyond showing the
name we tried to use. For case (2), though, we can help to
guide them through common workflows.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If we refuse a branch operation because the tracking
start_name the user gave us is bogus, we just print
something like:
fatal: Cannot setup tracking information; start point is not a branch
If we mention the actual name we tried to use, that may help
the user figure out why it didn't work (e.g., if they gave
us the arguments in the wrong order).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If we are trying to set the upstream config for a branch,
the create_branch function will check both that the name
resolves as a ref, and that it is either a local or
remote-tracking branch.
However, before we do so we run get_sha1 on it to find out
whether it resolves at all (since the create_branch function
is also used to create actual branches, it wants to know
where to start the new branch). This means that if you feed
a ref that does not exist to "branch --set-upstream-to",
rather than getting a helpful message about tracking, you
only get "not a valid object name".
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This message is duplicated, and is quite long. Let's factor
it out, which avoids the repetition and the long lines. It
will also make future patches easier as we tweak the
message.
While we're at it, let's also mark it for translation.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Like the "switched to..." message (which is already
suppressed by "-q"), this message is purely informational.
Let's silence it if the user asked us to be quiet.
This patch is slightly more than a one-liner, because we
have to teach create_branch to propagate the flag all the
way down to install_branch_config.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* nd/resolve-ref:
Rename resolve_ref() to resolve_ref_unsafe()
Convert resolve_ref+xstrdup to new resolve_refdup function
revert: convert resolve_ref() to read_ref_full()
* jn/maint-sequencer-fixes:
revert: stop creating and removing sequencer-old directory
Revert "reset: Make reset remove the sequencer state"
revert: do not remove state until sequence is finished
revert: allow single-pick in the middle of cherry-pick sequence
revert: pass around rev-list args in already-parsed form
revert: allow cherry-pick --continue to commit before resuming
revert: give --continue handling its own function
resolve_ref() may return a pointer to a shared buffer and can be
overwritten by the next resolve_ref() calls. Callers need to
pay attention, not to keep the pointer when the next call happens.
Rename with "_unsafe" suffix to warn developers (or reviewers) before
introducing new call sites.
This patch is generated using the following command
git grep -l 'resolve_ref(' -- '*.[ch]'|xargs sed -i 's/resolve_ref(/resolve_ref_unsafe(/g'
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This reverts commit 95eb88d8ee, which
was a UI experiment that did not reflect how "git reset" actually gets
used. The reversion also fixes a test, indicated in the patch.
Encouraged-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* jc/request-pull-show-head-4:
request-pull: use the annotated tag contents
fmt-merge-msg.c: Fix an "dubious one-bit signed bitfield" sparse error
environment.c: Fix an sparse "symbol not declared" warning
builtin/log.c: Fix an "Using plain integer as NULL pointer" warning
fmt-merge-msg: use branch.$name.description
request-pull: use the branch description
request-pull: state what commit to expect
request-pull: modernize style
branch: teach --edit-description option
format-patch: use branch description in cover letter
branch: add read_branch_desc() helper function
Conflicts:
builtin/branch.c
When on master, "git checkout -B master <commit>" is a more natural way to
say "git reset --keep <commit>", which was originally invented for the
exact purpose of moving to the named commit while keeping the local changes
around.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When conflicts are encountered while reverting a commit, it can be
handy to have the name of that commit easily available. For example,
to produce a copy of the patch to refer to while resolving conflicts:
$ git revert 2eceb2a8
error: could not revert 2eceb2a8... awesome, buggy feature
$ git show -R REVERT_HEAD >the-patch
$ edit $(git diff --name-only)
Set a REVERT_HEAD pseudoref when "git revert" does not make a commit,
for cases like this. This also makes it possible for scripts to
distinguish between a revert that encountered conflicts and other
sources of an unmerged index.
After successfully committing, resetting with "git reset", or moving
to another commit with "git checkout" or "git reset", the pseudoref is
no longer useful, so remove it.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This will be used by various callers that make use of the branch
description throughout the system, so that if we need to update
the implementation the callers do not have to be modified.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* rr/revert-cherry-pick-continue:
builtin/revert.c: make commit_list_append() static
revert: Propagate errors upwards from do_pick_commit
revert: Introduce --continue to continue the operation
revert: Don't implicitly stomp pending sequencer operation
revert: Remove sequencer state when no commits are pending
reset: Make reset remove the sequencer state
revert: Introduce --reset to remove sequencer state
revert: Make pick_commits functionally act on a commit list
revert: Save command-line options for continuing operation
revert: Save data for continuing after conflict resolution
revert: Don't create invalid replay_opts in parse_args
revert: Separate cmdline parsing from functional code
revert: Introduce struct to keep command-line options
revert: Eliminate global "commit" variable
revert: Rename no_replay to record_origin
revert: Don't check lone argument in get_encoding
revert: Simplify and inline add_message_to_msg
config: Introduce functions to write non-standard file
advice: Introduce error_resolve_conflict
