return 0;
}
+static int is_per_worktree_ref(const char *refname)
+{
+ return !strcmp(refname, "HEAD");
+}
+
+static int is_pseudoref_syntax(const char *refname)
+{
+ const char *c;
+
+ for (c = refname; *c; c++) {
+ if (!isupper(*c) && *c != '-' && *c != '_')
+ return 0;
+ }
+
+ return 1;
+}
+
+enum ref_type ref_type(const char *refname)
+{
+ if (is_per_worktree_ref(refname))
+ return REF_TYPE_PER_WORKTREE;
+ if (is_pseudoref_syntax(refname))
+ return REF_TYPE_PSEUDOREF;
+ return REF_TYPE_NORMAL;
+}
+
+static int write_pseudoref(const char *pseudoref, const unsigned char *sha1,
+ const unsigned char *old_sha1, struct strbuf *err)
+{
+ const char *filename;
+ int fd;
+ static struct lock_file lock;
+ struct strbuf buf = STRBUF_INIT;
+ int ret = -1;
+
+ strbuf_addf(&buf, "%s\n", sha1_to_hex(sha1));
+
+ filename = git_path("%s", pseudoref);
+ fd = hold_lock_file_for_update(&lock, filename, LOCK_DIE_ON_ERROR);
+ if (fd < 0) {
+ strbuf_addf(err, "Could not open '%s' for writing: %s",
+ filename, strerror(errno));
+ return -1;
+ }
+
+ if (old_sha1) {
+ unsigned char actual_old_sha1[20];
+
+ if (read_ref(pseudoref, actual_old_sha1))
+ die("could not read ref '%s'", pseudoref);
+ if (hashcmp(actual_old_sha1, old_sha1)) {
+ strbuf_addf(err, "Unexpected sha1 when writing %s", pseudoref);
+ rollback_lock_file(&lock);
+ goto done;
+ }
+ }
+
+ if (write_in_full(fd, buf.buf, buf.len) != buf.len) {
+ strbuf_addf(err, "Could not write to '%s'", filename);
+ rollback_lock_file(&lock);
+ goto done;
+ }
+
+ commit_lock_file(&lock);
+ ret = 0;
+done:
+ strbuf_release(&buf);
+ return ret;
+}
+
+static int delete_pseudoref(const char *pseudoref, const unsigned char *old_sha1)
+{
+ static struct lock_file lock;
+ const char *filename;
+
+ filename = git_path("%s", pseudoref);
+
+ if (old_sha1 && !is_null_sha1(old_sha1)) {
+ int fd;
+ unsigned char actual_old_sha1[20];
+
+ fd = hold_lock_file_for_update(&lock, filename,
+ LOCK_DIE_ON_ERROR);
+ if (fd < 0)
+ die_errno(_("Could not open '%s' for writing"), filename);
+ if (read_ref(pseudoref, actual_old_sha1))
+ die("could not read ref '%s'", pseudoref);
+ if (hashcmp(actual_old_sha1, old_sha1)) {
+ warning("Unexpected sha1 when deleting %s", pseudoref);
+ rollback_lock_file(&lock);
+ return -1;
+ }
+
+ unlink(filename);
+ rollback_lock_file(&lock);
+ } else {
+ unlink(filename);
+ }
+
+ return 0;
+}
+
int delete_ref(const char *refname, const unsigned char *old_sha1,
unsigned int flags)
{
struct ref_transaction *transaction;
struct strbuf err = STRBUF_INIT;
+ if (ref_type(refname) == REF_TYPE_PSEUDOREF)
+ return delete_pseudoref(refname, old_sha1);
+
transaction = ref_transaction_begin(&err);
if (!transaction ||
ref_transaction_delete(transaction, refname, old_sha1,
{
static char term = '\n';
struct object *o;
+ int fd;
o = parse_object(sha1);
if (!o) {
unlock_ref(lock);
return -1;
}
- if (write_in_full(lock->lk->fd, sha1_to_hex(sha1), 40) != 40 ||
- write_in_full(lock->lk->fd, &term, 1) != 1 ||
+ fd = get_lock_file_fd(lock->lk);
+ if (write_in_full(fd, sha1_to_hex(sha1), 40) != 40 ||
+ write_in_full(fd, &term, 1) != 1 ||
close_ref(lock) < 0) {
strbuf_addf(err,
- "Couldn't write %s", lock->lk->filename.buf);
+ "Couldn't write %s", get_lock_file_path(lock->lk));
unlock_ref(lock);
return -1;
}
const unsigned char *new_sha1, const unsigned char *old_sha1,
unsigned int flags, enum action_on_err onerr)
{
- struct ref_transaction *t;
+ struct ref_transaction *t = NULL;
struct strbuf err = STRBUF_INIT;
+ int ret = 0;
- t = ref_transaction_begin(&err);
- if (!t ||
- ref_transaction_update(t, refname, new_sha1, old_sha1,
- flags, msg, &err) ||
- ref_transaction_commit(t, &err)) {
+ if (ref_type(refname) == REF_TYPE_PSEUDOREF) {
+ ret = write_pseudoref(refname, new_sha1, old_sha1, &err);
+ } else {
+ t = ref_transaction_begin(&err);
+ if (!t ||
+ ref_transaction_update(t, refname, new_sha1, old_sha1,
+ flags, msg, &err) ||
+ ref_transaction_commit(t, &err)) {
+ ret = 1;
+ ref_transaction_free(t);
+ }
+ }
+ if (ret) {
const char *str = "update_ref failed for ref '%s': %s";
- ref_transaction_free(t);
switch (onerr) {
case UPDATE_REFS_MSG_ON_ERR:
error(str, refname, err.buf);
return 1;
}
strbuf_release(&err);
- ref_transaction_free(t);
+ if (t)
+ ref_transaction_free(t);
return 0;
}
cb.newlog = fdopen_lock_file(&reflog_lock, "w");
if (!cb.newlog) {
error("cannot fdopen %s (%s)",
- reflog_lock.filename.buf, strerror(errno));
+ get_lock_file_path(&reflog_lock), strerror(errno));
goto failure;
}
}
status |= error("couldn't write %s: %s", log_file,
strerror(errno));
} else if (update &&
- (write_in_full(lock->lk->fd,
+ (write_in_full(get_lock_file_fd(lock->lk),
sha1_to_hex(cb.last_kept_sha1), 40) != 40 ||
- write_str_in_full(lock->lk->fd, "\n") != 1 ||
- close_ref(lock) < 0)) {
+ write_str_in_full(get_lock_file_fd(lock->lk), "\n") != 1 ||
+ close_ref(lock) < 0)) {
status |= error("couldn't write %s",
- lock->lk->filename.buf);
+ get_lock_file_path(lock->lk));
rollback_lock_file(&reflog_lock);
} else if (commit_lock_file(&reflog_lock)) {
status |= error("unable to commit reflog '%s' (%s)",