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Merge branch 'mv/maint-branch-m-symref' into maint

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* mv/maint-branch-m-symref:
  update-ref --no-deref -d: handle the case when the pointed ref is packed
  git branch -m: forbid renaming of a symref
  Fix git update-ref --no-deref -d.
  rename_ref(): handle the case when the reflog of a ref does not exist
  Fix git branch -m for symrefs.
This commit is contained in:
Junio C Hamano 2008-11-08 16:07:37 -08:00
commit 3b8572a429
11 changed files with 65 additions and 24 deletions
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2
builtin-branch.c
View File

@ -160,7 +160,7 @@ static int delete_branches(int argc, const char **argv, int force, int kinds)
continue;
}
if (delete_ref(name, sha1)) {
if (delete_ref(name, sha1, 0)) {
error("Error deleting %sbranch '%s'", remote,
argv[i]);
ret = 1;

4
builtin-remote.c
View File

@ -340,7 +340,7 @@ static int remove_branches(struct string_list *branches)
const char *refname = item->string;
unsigned char *sha1 = item->util;
if (delete_ref(refname, sha1))
if (delete_ref(refname, sha1, 0))
result |= error("Could not remove branch %s", refname);
}
return result;
@ -570,7 +570,7 @@ static int prune(int argc, const char **argv)
const char *refname = states.stale.items[i].util;
if (!dry_run)
result |= delete_ref(refname, NULL);
result |= delete_ref(refname, NULL, 0);
printf(" * [%s] %s\n", dry_run ? "would prune" : "pruned",
abbrev_ref(refname, "refs/remotes/"));

2
builtin-reset.c
View File

@ -279,7 +279,7 @@ int cmd_reset(int argc, const char **argv, const char *prefix)
update_ref(msg, "ORIG_HEAD", orig, old_orig, 0, MSG_ON_ERR);
}
else if (old_orig)
delete_ref("ORIG_HEAD", old_orig);
delete_ref("ORIG_HEAD", old_orig, 0);
prepend_reflog_action("updating HEAD", msg, sizeof(msg));
update_ref_status = update_ref(msg, "HEAD", sha1, orig, 0, MSG_ON_ERR);

2
builtin-send-pack.c
View File

@ -232,7 +232,7 @@ static void update_tracking_ref(struct remote *remote, struct ref *ref)
if (args.verbose)
fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
if (ref->deletion) {
delete_ref(rs.dst, NULL);
delete_ref(rs.dst, NULL, 0);
} else
update_ref("update by push", rs.dst,
ref->new_sha1, NULL, 0, 0);

2
builtin-tag.c
View File

@ -125,7 +125,7 @@ static int for_each_tag_name(const char **argv, each_tag_name_fn fn)
static int delete_tag(const char *name, const char *ref,
const unsigned char *sha1)
{
if (delete_ref(ref, sha1))
if (delete_ref(ref, sha1, 0))
return 1;
printf("Deleted tag '%s'\n", name);
return 0;

8
builtin-update-ref.c
View File

@ -13,7 +13,7 @@ int cmd_update_ref(int argc, const char **argv, const char *prefix)
{
const char *refname, *oldval, *msg=NULL;
unsigned char sha1[20], oldsha1[20];
int delete = 0, no_deref = 0;
int delete = 0, no_deref = 0, flags = 0;
struct option options[] = {
OPT_STRING( 'm', NULL, &msg, "reason", "reason of the update"),
OPT_BOOLEAN('d', NULL, &delete, "deletes the reference"),
@ -47,9 +47,11 @@ int cmd_update_ref(int argc, const char **argv, const char *prefix)
if (oldval && *oldval && get_sha1(oldval, oldsha1))
die("%s: not a valid old SHA1", oldval);
if (no_deref)
flags = REF_NODEREF;
if (delete)
return delete_ref(refname, oldval ? oldsha1 : NULL);
return delete_ref(refname, oldval ? oldsha1 : NULL, flags);
else
return update_ref(msg, refname, sha1, oldval ? oldsha1 : NULL,
no_deref ? REF_NODEREF : 0, DIE_ON_ERR);
flags, DIE_ON_ERR);
}

2
cache.h
View File

@ -424,7 +424,7 @@ extern int commit_locked_index(struct lock_file *);
extern void set_alternate_index_output(const char *);
extern int close_lock_file(struct lock_file *);
extern void rollback_lock_file(struct lock_file *);
extern int delete_ref(const char *, const unsigned char *sha1);
extern int delete_ref(const char *, const unsigned char *sha1, int delopt);
/* Environment bits from configuration mechanism */
extern int trust_executable_bit;

2
receive-pack.c
View File

@ -222,7 +222,7 @@ static const char *update(struct command *cmd)
warning ("Allowing deletion of corrupt ref.");
old_sha1 = NULL;
}
if (delete_ref(name, old_sha1)) {
if (delete_ref(name, old_sha1, 0)) {
error("failed to delete %s", name);
return "failed to delete";
}

38
refs.c
View File

@ -915,25 +915,33 @@ static int repack_without_ref(const char *refname)
return commit_lock_file(&packlock);
}
int delete_ref(const char *refname, const unsigned char *sha1)
int delete_ref(const char *refname, const unsigned char *sha1, int delopt)
{
struct ref_lock *lock;
int err, i, ret = 0, flag = 0;
int err, i = 0, ret = 0, flag = 0;
lock = lock_ref_sha1_basic(refname, sha1, 0, &flag);
if (!lock)
return 1;
if (!(flag & REF_ISPACKED)) {
if (!(flag & REF_ISPACKED) || flag & REF_ISSYMREF) {
/* loose */
i = strlen(lock->lk->filename) - 5; /* .lock */
lock->lk->filename[i] = 0;
err = unlink(lock->lk->filename);
const char *path;
if (!(delopt & REF_NODEREF)) {
i = strlen(lock->lk->filename) - 5; /* .lock */
lock->lk->filename[i] = 0;
path = lock->lk->filename;
} else {
path = git_path(refname);
}
err = unlink(path);
if (err && errno != ENOENT) {
ret = 1;
error("unlink(%s) failed: %s",
lock->lk->filename, strerror(errno));
path, strerror(errno));
}
lock->lk->filename[i] = '.';
if (!(delopt & REF_NODEREF))
lock->lk->filename[i] = '.';
}
/* removing the loose one could have resurrected an earlier
* packed one. Also, if it was not loose we need to repack
@ -958,11 +966,16 @@ int rename_ref(const char *oldref, const char *newref, const char *logmsg)
struct ref_lock *lock;
struct stat loginfo;
int log = !lstat(git_path("logs/%s", oldref), &loginfo);
const char *symref = NULL;
if (S_ISLNK(loginfo.st_mode))
if (log && S_ISLNK(loginfo.st_mode))
return error("reflog for %s is a symlink", oldref);
if (!resolve_ref(oldref, orig_sha1, 1, &flag))
symref = resolve_ref(oldref, orig_sha1, 1, &flag);
if (flag & REF_ISSYMREF)
return error("refname %s is a symbolic ref, renaming it is not supported",
oldref);
if (!symref)
return error("refname %s not found", oldref);
if (!is_refname_available(newref, oldref, get_packed_refs(), 0))
@ -982,12 +995,12 @@ int rename_ref(const char *oldref, const char *newref, const char *logmsg)
return error("unable to move logfile logs/%s to tmp-renamed-log: %s",
oldref, strerror(errno));
if (delete_ref(oldref, orig_sha1)) {
if (delete_ref(oldref, orig_sha1, REF_NODEREF)) {
error("unable to delete old %s", oldref);
goto rollback;
}
if (resolve_ref(newref, sha1, 1, &flag) && delete_ref(newref, sha1)) {
if (resolve_ref(newref, sha1, 1, &flag) && delete_ref(newref, sha1, REF_NODEREF)) {
if (errno==EISDIR) {
if (remove_empty_directories(git_path("%s", newref))) {
error("Directory not empty: %s", newref);
@ -1030,7 +1043,6 @@ int rename_ref(const char *oldref, const char *newref, const char *logmsg)
error("unable to lock %s for update", newref);
goto rollback;
}
lock->force_write = 1;
hashcpy(lock->old_sha1, orig_sha1);
if (write_ref_sha1(lock, orig_sha1, logmsg)) {

18
t/t1400-update-ref.sh
View File

@ -75,6 +75,24 @@ test_expect_success "delete $m (by HEAD)" '
'
rm -f .git/$m
cp -f .git/HEAD .git/HEAD.orig
test_expect_success "delete symref without dereference" '
git update-ref --no-deref -d HEAD &&
! test -f .git/HEAD
'
cp -f .git/HEAD.orig .git/HEAD
test_expect_success "delete symref without dereference when the referred ref is packed" '
echo foo >foo.c &&
git add foo.c &&
git commit -m foo &&
git pack-refs --all &&
git update-ref --no-deref -d HEAD &&
! test -f .git/HEAD
'
cp -f .git/HEAD.orig .git/HEAD
git update-ref -d $m
test_expect_success '(not) create HEAD with old sha1' "
test_must_fail git update-ref HEAD $A $B
"

9
t/t3200-branch.sh
View File

@ -112,6 +112,15 @@ test_expect_success 'config information was renamed, too' \
"test $(git config branch.s.dummy) = Hello &&
test_must_fail git config branch.s/s/dummy"
test_expect_success 'renaming a symref is not allowed' \
'
git symbolic-ref refs/heads/master2 refs/heads/master &&
test_must_fail git branch -m master2 master3 &&
git symbolic-ref refs/heads/master2 &&
test -f .git/refs/heads/master &&
! test -f .git/refs/heads/master3
'
test_expect_success \
'git branch -m u v should fail when the reflog for u is a symlink' '
git branch -l u &&