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Merge branch 'ky/branch-m-worktree'
When "git worktree" feature is in use, "git branch -m" renamed a branch that is checked out in another worktree without adjusting the HEAD symbolic ref for the worktree. * ky/branch-m-worktree: set_worktree_head_symref(): fix error message branch -m: update all per-worktree HEADs refs: add a new function set_worktree_head_symref
This commit is contained in:
commit
741a6942eb
23
branch.c
23
branch.c
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@ -344,3 +344,26 @@ void die_if_checked_out(const char *branch)
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die(_("'%s' is already checked out at '%s'"), branch, existing);
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}
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}
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int replace_each_worktree_head_symref(const char *oldref, const char *newref)
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{
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int ret = 0;
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struct worktree **worktrees = get_worktrees();
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int i;
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for (i = 0; worktrees[i]; i++) {
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if (worktrees[i]->is_detached)
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continue;
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if (strcmp(oldref, worktrees[i]->head_ref))
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continue;
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if (set_worktree_head_symref(worktrees[i]->git_dir, newref)) {
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ret = -1;
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error(_("HEAD of working tree %s is not updated"),
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worktrees[i]->path);
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}
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}
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free_worktrees(worktrees);
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return ret;
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}
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7
branch.h
7
branch.h
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@ -60,4 +60,11 @@ extern int read_branch_desc(struct strbuf *, const char *branch_name);
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*/
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extern void die_if_checked_out(const char *branch);
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/*
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* Update all per-worktree HEADs pointing at the old ref to point the new ref.
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* This will be used when renaming a branch. Returns 0 if successful, non-zero
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* otherwise.
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*/
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extern int replace_each_worktree_head_symref(const char *oldref, const char *newref);
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#endif
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@ -558,8 +558,7 @@ static void rename_branch(const char *oldname, const char *newname, int force)
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if (recovery)
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warning(_("Renamed a misnamed branch '%s' away"), oldref.buf + 11);
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/* no need to pass logmsg here as HEAD didn't really move */
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if (!strcmp(oldname, head) && create_symref("HEAD", newref.buf, NULL))
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if (replace_each_worktree_head_symref(oldref.buf, newref.buf))
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die(_("Branch renamed to %s, but HEAD is not updated!"), newname);
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strbuf_addf(&oldsection, "branch.%s", oldref.buf + 11);
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9
refs.h
9
refs.h
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@ -306,6 +306,15 @@ extern int rename_ref(const char *oldref, const char *newref, const char *logmsg
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extern int create_symref(const char *refname, const char *target, const char *logmsg);
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/*
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* Update HEAD of the specified gitdir.
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* Similar to create_symref("relative-git-dir/HEAD", target, NULL), but
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* this can update the main working tree's HEAD regardless of where
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* $GIT_DIR points to.
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* Return 0 if successful, non-zero otherwise.
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* */
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extern int set_worktree_head_symref(const char *gitdir, const char *target);
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enum action_on_err {
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UPDATE_REFS_MSG_ON_ERR,
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UPDATE_REFS_DIE_ON_ERR,
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@ -2894,6 +2894,42 @@ int create_symref(const char *refname, const char *target, const char *logmsg)
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return ret;
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}
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int set_worktree_head_symref(const char *gitdir, const char *target)
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{
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static struct lock_file head_lock;
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struct ref_lock *lock;
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struct strbuf head_path = STRBUF_INIT;
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const char *head_rel;
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int ret;
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strbuf_addf(&head_path, "%s/HEAD", absolute_path(gitdir));
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if (hold_lock_file_for_update(&head_lock, head_path.buf,
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LOCK_NO_DEREF) < 0) {
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struct strbuf err = STRBUF_INIT;
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unable_to_lock_message(head_path.buf, errno, &err);
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error("%s", err.buf);
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strbuf_release(&err);
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strbuf_release(&head_path);
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return -1;
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}
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/* head_rel will be "HEAD" for the main tree, "worktrees/wt/HEAD" for
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linked trees */
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head_rel = remove_leading_path(head_path.buf,
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absolute_path(get_git_common_dir()));
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/* to make use of create_symref_locked(), initialize ref_lock */
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lock = xcalloc(1, sizeof(struct ref_lock));
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lock->lk = &head_lock;
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lock->ref_name = xstrdup(head_rel);
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lock->orig_ref_name = xstrdup(head_rel);
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ret = create_symref_locked(lock, head_rel, target, NULL);
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unlock_ref(lock); /* will free lock */
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strbuf_release(&head_path);
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return ret;
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}
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int reflog_exists(const char *refname)
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{
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struct stat st;
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@ -126,7 +126,28 @@ test_expect_success 'git branch -M foo bar should fail when bar is checked out'
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test_expect_success 'git branch -M baz bam should succeed when baz is checked out' '
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git checkout -b baz &&
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git branch bam &&
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git branch -M baz bam
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git branch -M baz bam &&
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test $(git rev-parse --abbrev-ref HEAD) = bam
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'
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test_expect_success 'git branch -M baz bam should succeed when baz is checked out as linked working tree' '
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git checkout master &&
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git worktree add -b baz bazdir &&
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git worktree add -f bazdir2 baz &&
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git branch -M baz bam &&
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test $(git -C bazdir rev-parse --abbrev-ref HEAD) = bam &&
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test $(git -C bazdir2 rev-parse --abbrev-ref HEAD) = bam
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'
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test_expect_success 'git branch -M baz bam should succeed within a worktree in which baz is checked out' '
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git checkout -b baz &&
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git worktree add -f bazdir3 baz &&
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(
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cd bazdir3 &&
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git branch -M baz bam &&
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test $(git rev-parse --abbrev-ref HEAD) = bam
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) &&
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test $(git rev-parse --abbrev-ref HEAD) = bam
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'
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test_expect_success 'git branch -M master should work when master is checked out' '
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