return ref;
}
-int create_symref(const char *ref_target, const char *refs_heads_master)
-{
- const char *lockpath;
- char ref[1000];
- int fd, len, written;
- const char *git_HEAD = git_path("%s", ref_target);
-
-#ifndef NO_SYMLINK_HEAD
- if (prefer_symlink_refs) {
- unlink(git_HEAD);
- if (!symlink(refs_heads_master, git_HEAD))
- return 0;
- fprintf(stderr, "no symlink - falling back to symbolic ref\n");
- }
-#endif
-
- len = snprintf(ref, sizeof(ref), "ref: %s\n", refs_heads_master);
- if (sizeof(ref) <= len) {
- error("refname too long: %s", refs_heads_master);
- return -1;
- }
- lockpath = mkpath("%s.lock", git_HEAD);
- fd = open(lockpath, O_CREAT | O_EXCL | O_WRONLY, 0666);
- if (fd < 0) {
- error("Unable to open %s for writing", lockpath);
- return -5;
- }
- written = write_in_full(fd, ref, len);
- close(fd);
- if (written != len) {
- unlink(lockpath);
- error("Unable to write to %s", lockpath);
- return -2;
- }
- if (rename(lockpath, git_HEAD) < 0) {
- unlink(lockpath);
- error("Unable to create %s", git_HEAD);
- return -3;
- }
- if (adjust_shared_perm(git_HEAD)) {
- unlink(lockpath);
- error("Unable to fix permissions on %s", lockpath);
- return -4;
- }
- return 0;
-}
-
int read_ref(const char *ref, unsigned char *sha1)
{
if (resolve_ref(ref, sha1, 1, NULL))
lock->lk = xcalloc(1, sizeof(struct lock_file));
lock->ref_name = xstrdup(ref);
- lock->log_file = xstrdup(git_path("logs/%s", ref));
+ lock->orig_ref_name = xstrdup(orig_ref);
ref_file = git_path("%s", ref);
lock->force_write = lstat(ref_file, &st) && errno == ENOENT;
*/
ret |= repack_without_ref(refname);
- err = unlink(lock->log_file);
+ err = unlink(git_path("logs/%s", lock->ref_name));
if (err && errno != ENOENT)
fprintf(stderr, "warning: unlink(%s) failed: %s",
- lock->log_file, strerror(errno));
+ git_path("logs/%s", lock->ref_name), strerror(errno));
invalidate_cached_refs();
unlock_ref(lock);
return ret;
rollback_lock_file(lock->lk);
}
free(lock->ref_name);
- free(lock->log_file);
+ free(lock->orig_ref_name);
free(lock);
}
-static int log_ref_write(struct ref_lock *lock,
- const unsigned char *sha1, const char *msg)
+static int log_ref_write(const char *ref_name, const unsigned char *old_sha1,
+ const unsigned char *new_sha1, const char *msg)
{
int logfd, written, oflags = O_APPEND | O_WRONLY;
unsigned maxlen, len;
int msglen;
- char *logrec;
+ char *log_file, *logrec;
const char *committer;
if (log_all_ref_updates < 0)
log_all_ref_updates = !is_bare_repository();
+ log_file = git_path("logs/%s", ref_name);
+
if (log_all_ref_updates &&
- (!strncmp(lock->ref_name, "refs/heads/", 11) ||
- !strncmp(lock->ref_name, "refs/remotes/", 13))) {
- if (safe_create_leading_directories(lock->log_file) < 0)
+ (!strncmp(ref_name, "refs/heads/", 11) ||
+ !strncmp(ref_name, "refs/remotes/", 13) ||
+ !strcmp(ref_name, "HEAD"))) {
+ if (safe_create_leading_directories(log_file) < 0)
return error("unable to create directory for %s",
- lock->log_file);
+ log_file);
oflags |= O_CREAT;
}
- logfd = open(lock->log_file, oflags, 0666);
+ logfd = open(log_file, oflags, 0666);
if (logfd < 0) {
if (!(oflags & O_CREAT) && errno == ENOENT)
return 0;
if ((oflags & O_CREAT) && errno == EISDIR) {
- if (remove_empty_directories(lock->log_file)) {
+ if (remove_empty_directories(log_file)) {
return error("There are still logs under '%s'",
- lock->log_file);
+ log_file);
}
- logfd = open(lock->log_file, oflags, 0666);
+ logfd = open(log_file, oflags, 0666);
}
if (logfd < 0)
return error("Unable to append to %s: %s",
- lock->log_file, strerror(errno));
+ log_file, strerror(errno));
}
msglen = 0;
maxlen = strlen(committer) + msglen + 100;
logrec = xmalloc(maxlen);
len = sprintf(logrec, "%s %s %s\n",
- sha1_to_hex(lock->old_sha1),
- sha1_to_hex(sha1),
+ sha1_to_hex(old_sha1),
+ sha1_to_hex(new_sha1),
committer);
if (msglen)
len += sprintf(logrec + len - 1, "\t%.*s\n", msglen, msg) - 1;
free(logrec);
close(logfd);
if (written != len)
- return error("Unable to append to %s", lock->log_file);
+ return error("Unable to append to %s", log_file);
return 0;
}
return -1;
}
invalidate_cached_refs();
- if (log_ref_write(lock, sha1, logmsg) < 0) {
+ if (log_ref_write(lock->ref_name, lock->old_sha1, sha1, logmsg) < 0 ||
+ (strcmp(lock->ref_name, lock->orig_ref_name) &&
+ log_ref_write(lock->orig_ref_name, lock->old_sha1, sha1, logmsg) < 0)) {
unlock_ref(lock);
return -1;
}
return 0;
}
+int create_symref(const char *ref_target, const char *refs_heads_master,
+ const char *logmsg)
+{
+ const char *lockpath;
+ char ref[1000];
+ int fd, len, written;
+ char *git_HEAD = xstrdup(git_path("%s", ref_target));
+ unsigned char old_sha1[20], new_sha1[20];
+
+ if (logmsg && read_ref(ref_target, old_sha1))
+ hashclr(old_sha1);
+
+#ifndef NO_SYMLINK_HEAD
+ if (prefer_symlink_refs) {
+ unlink(git_HEAD);
+ if (!symlink(refs_heads_master, git_HEAD))
+ goto done;
+ fprintf(stderr, "no symlink - falling back to symbolic ref\n");
+ }
+#endif
+
+ len = snprintf(ref, sizeof(ref), "ref: %s\n", refs_heads_master);
+ if (sizeof(ref) <= len) {
+ error("refname too long: %s", refs_heads_master);
+ goto error_free_return;
+ }
+ lockpath = mkpath("%s.lock", git_HEAD);
+ fd = open(lockpath, O_CREAT | O_EXCL | O_WRONLY, 0666);
+ if (fd < 0) {
+ error("Unable to open %s for writing", lockpath);
+ goto error_free_return;
+ }
+ written = write_in_full(fd, ref, len);
+ close(fd);
+ if (written != len) {
+ error("Unable to write to %s", lockpath);
+ goto error_unlink_return;
+ }
+ if (rename(lockpath, git_HEAD) < 0) {
+ error("Unable to create %s", git_HEAD);
+ goto error_unlink_return;
+ }
+ if (adjust_shared_perm(git_HEAD)) {
+ error("Unable to fix permissions on %s", lockpath);
+ error_unlink_return:
+ unlink(lockpath);
+ error_free_return:
+ free(git_HEAD);
+ return -1;
+ }
+
+ done:
+ if (logmsg && !read_ref(refs_heads_master, new_sha1))
+ log_ref_write(ref_target, old_sha1, new_sha1, logmsg);
+
+ free(git_HEAD);
+ return 0;
+}
+
static char *ref_msg(const char *line, const char *endp)
{
const char *ep;
return ret;
}
+static int do_for_each_reflog(const char *base, each_ref_fn fn, void *cb_data)
+{
+ DIR *dir = opendir(git_path("logs/%s", base));
+ int retval = errno;
+
+ if (dir) {
+ struct dirent *de;
+ int baselen = strlen(base);
+ char *log = xmalloc(baselen + 257);
+
+ memcpy(log, base, baselen);
+ if (baselen && base[baselen-1] != '/')
+ log[baselen++] = '/';
+
+ while ((de = readdir(dir)) != NULL) {
+ struct stat st;
+ int namelen;
+
+ if (de->d_name[0] == '.')
+ continue;
+ namelen = strlen(de->d_name);
+ if (namelen > 255)
+ continue;
+ if (has_extension(de->d_name, ".lock"))
+ continue;
+ memcpy(log + baselen, de->d_name, namelen+1);
+ if (stat(git_path("logs/%s", log), &st) < 0)
+ continue;
+ if (S_ISDIR(st.st_mode)) {
+ retval = do_for_each_reflog(log, fn, cb_data);
+ } else {
+ unsigned char sha1[20];
+ if (!resolve_ref(log, sha1, 0, NULL))
+ retval = error("bad ref for %s", log);
+ else
+ retval = fn(log, sha1, 0, cb_data);
+ }
+ if (retval)
+ break;
+ }
+ free(log);
+ closedir(dir);
+ }
+ return retval;
+}
+
+int for_each_reflog(each_ref_fn fn, void *cb_data)
+{
+ return do_for_each_reflog("", fn, cb_data);
+}