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refs: kill set_worktree_head_symref()

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70999e9cec (branch -m: update all per-worktree HEADs - 2016-03-27)
added this function in order to update HEADs of all relevant
worktrees, when a branch is renamed.

It, as a public ref api, kind of breaks abstraction when it uses
internal functions of files backend. With the introduction of
refs_create_symref(), we can move back pretty close to the code before
70999e9cec, where create_symref() was used for updating HEAD.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Nguyễn Thái Ngọc Duy 2017-04-24 17:01:24 +07:00 committed by Junio C Hamano
parent fa099d2322
commit d026a25657
4 changed files with 18 additions and 60 deletions
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12
branch.c
View file

@ -353,18 +353,18 @@ int replace_each_worktree_head_symref(const char *oldref, const char *newref,
int i;
for (i = 0; worktrees[i]; i++) {
struct ref_store *refs;
if (worktrees[i]->is_detached)
continue;
if (worktrees[i]->head_ref &&
strcmp(oldref, worktrees[i]->head_ref))
continue;
if (set_worktree_head_symref(get_worktree_git_dir(worktrees[i]),
newref, logmsg)) {
ret = -1;
error(_("HEAD of working tree %s is not updated"),
worktrees[i]->path);
}
refs = get_worktree_ref_store(worktrees[i]);
if (refs_create_symref(refs, "HEAD", newref, logmsg))
ret = error(_("HEAD of working tree %s is not updated"),
worktrees[i]->path);
}
free_worktrees(worktrees);

10
refs.h
View file

@ -402,16 +402,6 @@ int refs_create_symref(struct ref_store *refs, const char *refname,
const char *target, const char *logmsg);
int create_symref(const char *refname, const char *target, const char *logmsg);
/*
* Update HEAD of the specified gitdir.
* Similar to create_symref("relative-git-dir/HEAD", target, NULL), but
* this can update the main working tree's HEAD regardless of where
* $GIT_DIR points to.
* Return 0 if successful, non-zero otherwise.
* */
int set_worktree_head_symref(const char *gitdir, const char *target,
const char *logmsg);
enum action_on_err {
UPDATE_REFS_MSG_ON_ERR,
UPDATE_REFS_DIE_ON_ERR,

44
refs/files-backend.c
View file

@ -3160,50 +3160,6 @@ static int files_create_symref(struct ref_store *ref_store,
return ret;
}
int set_worktree_head_symref(const char *gitdir, const char *target, const char *logmsg)
{
/*
* FIXME: this obviously will not work well for future refs
* backends. This function needs to die.
*/
struct files_ref_store *refs =
files_downcast(get_main_ref_store(),
REF_STORE_WRITE,
"set_head_symref");
static struct lock_file head_lock;
struct ref_lock *lock;
struct strbuf head_path = STRBUF_INIT;
const char *head_rel;
int ret;
strbuf_addf(&head_path, "%s/HEAD", absolute_path(gitdir));
if (hold_lock_file_for_update(&head_lock, head_path.buf,
LOCK_NO_DEREF) < 0) {
struct strbuf err = STRBUF_INIT;
unable_to_lock_message(head_path.buf, errno, &err);
error("%s", err.buf);
strbuf_release(&err);
strbuf_release(&head_path);
return -1;
}
/* head_rel will be "HEAD" for the main tree, "worktrees/wt/HEAD" for
linked trees */
head_rel = remove_leading_path(head_path.buf,
absolute_path(get_git_common_dir()));
/* to make use of create_symref_locked(), initialize ref_lock */
lock = xcalloc(1, sizeof(struct ref_lock));
lock->lk = &head_lock;
lock->ref_name = xstrdup(head_rel);
ret = create_symref_locked(refs, lock, head_rel, target, logmsg);
unlock_ref(lock); /* will free lock */
strbuf_release(&head_path);
return ret;
}
static int files_reflog_exists(struct ref_store *ref_store,
const char *refname)
{

12
t/t1407-worktree-ref-store.sh
View file

@ -37,4 +37,16 @@ test_expect_success 'resolve_ref(<per-worktree-ref>)' '
test_cmp expected actual
'
test_expect_success 'create_symref(FOO, refs/heads/master)' '
$RWT create-symref FOO refs/heads/master nothing &&
echo refs/heads/master >expected &&
git -C wt symbolic-ref FOO >actual &&
test_cmp expected actual &&
$RMAIN create-symref FOO refs/heads/wt-master nothing &&
echo refs/heads/wt-master >expected &&
git symbolic-ref FOO >actual &&
test_cmp expected actual
'
test_done