diff options
Diffstat (limited to 'refs.c')
| -rw-r--r-- | refs.c | 109 |
1 files changed, 77 insertions, 32 deletions
@@ -406,33 +406,6 @@ int get_ref_sha1(const char *ref, unsigned char *sha1) return read_ref(mkpath("refs/%s", ref), sha1); } -int delete_ref(const char *refname, unsigned char *sha1) -{ - struct ref_lock *lock; - int err, i, ret = 0; - - lock = lock_any_ref_for_update(refname, sha1); - if (!lock) - return 1; - i = strlen(lock->lk->filename) - 5; /* .lock */ - lock->lk->filename[i] = 0; - err = unlink(lock->lk->filename); - if (err) { - ret = 1; - error("unlink(%s) failed: %s", - lock->lk->filename, strerror(errno)); - } - lock->lk->filename[i] = '.'; - - err = unlink(lock->log_file); - if (err && errno != ENOENT) - fprintf(stderr, "warning: unlink(%s) failed: %s", - lock->log_file, strerror(errno)); - - invalidate_cached_refs(); - return ret; -} - /* * Make sure "ref" is something reasonable to have under ".git/refs/"; * We do not like it if: @@ -555,7 +528,7 @@ static int remove_empty_directories(char *file) return remove_empty_dir_recursive(path, len); } -static struct ref_lock *lock_ref_sha1_basic(const char *ref, const unsigned char *old_sha1) +static struct ref_lock *lock_ref_sha1_basic(const char *ref, const unsigned char *old_sha1, int *flag) { char *ref_file; const char *orig_ref = ref; @@ -567,7 +540,7 @@ static struct ref_lock *lock_ref_sha1_basic(const char *ref, const unsigned char lock = xcalloc(1, sizeof(struct ref_lock)); lock->lock_fd = -1; - ref = resolve_ref(ref, lock->old_sha1, mustexist, NULL); + ref = resolve_ref(ref, lock->old_sha1, mustexist, flag); if (!ref && errno == EISDIR) { /* we are trying to lock foo but we used to * have foo/bar which now does not exist; @@ -580,7 +553,7 @@ static struct ref_lock *lock_ref_sha1_basic(const char *ref, const unsigned char error("there are still refs under '%s'", orig_ref); goto error_return; } - ref = resolve_ref(orig_ref, lock->old_sha1, mustexist, NULL); + ref = resolve_ref(orig_ref, lock->old_sha1, mustexist, flag); } if (!ref) { last_errno = errno; @@ -640,12 +613,84 @@ struct ref_lock *lock_ref_sha1(const char *ref, const unsigned char *old_sha1) if (check_ref_format(ref)) return NULL; strcpy(refpath, mkpath("refs/%s", ref)); - return lock_ref_sha1_basic(refpath, old_sha1); + return lock_ref_sha1_basic(refpath, old_sha1, NULL); } struct ref_lock *lock_any_ref_for_update(const char *ref, const unsigned char *old_sha1) { - return lock_ref_sha1_basic(ref, old_sha1); + return lock_ref_sha1_basic(ref, old_sha1, NULL); +} + +static int repack_without_ref(const char *refname) +{ + struct ref_list *list, *packed_ref_list; + int fd; + int found = 0; + struct lock_file packlock; + + packed_ref_list = get_packed_refs(); + for (list = packed_ref_list; list; list = list->next) { + if (!strcmp(refname, list->name)) { + found = 1; + break; + } + } + if (!found) + return 0; + memset(&packlock, 0, sizeof(packlock)); + fd = hold_lock_file_for_update(&packlock, git_path("packed-refs"), 0); + if (fd < 0) + return error("cannot delete '%s' from packed refs", refname); + + for (list = packed_ref_list; list; list = list->next) { + char line[PATH_MAX + 100]; + int len; + + if (!strcmp(refname, list->name)) + continue; + len = snprintf(line, sizeof(line), "%s %s\n", + sha1_to_hex(list->sha1), list->name); + /* this should not happen but just being defensive */ + if (len > sizeof(line)) + die("too long a refname '%s'", list->name); + write_or_die(fd, line, len); + } + return commit_lock_file(&packlock); +} + +int delete_ref(const char *refname, unsigned char *sha1) +{ + struct ref_lock *lock; + int err, i, ret = 0, flag = 0; + + lock = lock_ref_sha1_basic(refname, sha1, &flag); + if (!lock) + return 1; + if (!(flag & REF_ISPACKED)) { + /* loose */ + i = strlen(lock->lk->filename) - 5; /* .lock */ + lock->lk->filename[i] = 0; + err = unlink(lock->lk->filename); + if (err) { + ret = 1; + error("unlink(%s) failed: %s", + lock->lk->filename, strerror(errno)); + } + 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 + * without it. + */ + ret |= repack_without_ref(refname); + + err = unlink(lock->log_file); + if (err && errno != ENOENT) + fprintf(stderr, "warning: unlink(%s) failed: %s", + lock->log_file, strerror(errno)); + invalidate_cached_refs(); + unlock_ref(lock); + return ret; } void unlock_ref(struct ref_lock *lock) |