Esempio n. 1
0
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 *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 &&
	    (!prefixcmp(ref_name, "refs/heads/") ||
	     !prefixcmp(ref_name, "refs/remotes/") ||
	     !strcmp(ref_name, "HEAD"))) {
		if (safe_create_leading_directories(log_file) < 0)
			return error("unable to create directory for %s",
				     log_file);
		oflags |= O_CREAT;
	}

	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(log_file)) {
				return error("There are still logs under '%s'",
					     log_file);
			}
			logfd = open(log_file, oflags, 0666);
		}

		if (logfd < 0)
			return error("Unable to append to %s: %s",
				     log_file, strerror(errno));
	}

	adjust_shared_perm(log_file);

	msglen = msg ? strlen(msg) : 0;
	committer = git_committer_info(0);
	maxlen = strlen(committer) + msglen + 100;
	logrec = xmalloc(maxlen);
	len = sprintf(logrec, "%s %s %s\n",
		      sha1_to_hex(old_sha1),
		      sha1_to_hex(new_sha1),
		      committer);
	if (msglen)
		len += copy_msg(logrec + len - 1, msg) - 1;
	written = len <= maxlen ? write_in_full(logfd, logrec, len) : -1;
	free(logrec);
	if (close(logfd) != 0 || written != len)
		return error("Unable to append to %s", log_file);
	return 0;
}
Esempio n. 2
0
bool remove_empty_directories_recur(const fs::path& p, std::vector<fs::path>& dirs)
{
	if (!fs::exists(p)) return false;

	bool ret = true;

	for (fs::directory_iterator i = fs::directory_iterator(p), e = fs::directory_iterator(); i != e; ++i)
	{
		if (!fs::is_directory(*i))
			ret = false;
		else
		{
			if (!remove_empty_directories(*i))
				ret = false;
		}
	}	

	if (ret)
	{
		HAL_DEV_MSG(wform(L"Removing directory: %1%") % p.wstring());
		dirs.push_back(p);
	}

	return ret;
}
Esempio n. 3
0
File: refs.c Progetto: ratnikov/git
int log_ref_setup(const char *ref_name, char *logfile, int bufsize)
{
	int logfd, oflags = O_APPEND | O_WRONLY;

	git_snpath(logfile, bufsize, "logs/%s", ref_name);
	if (log_all_ref_updates &&
	    (!prefixcmp(ref_name, "refs/heads/") ||
	     !prefixcmp(ref_name, "refs/remotes/") ||
	     !prefixcmp(ref_name, "refs/notes/") ||
	     !strcmp(ref_name, "HEAD"))) {
		if (safe_create_leading_directories(logfile) < 0)
			return error("unable to create directory for %s",
				     logfile);
		oflags |= O_CREAT;
	}

	logfd = open(logfile, oflags, 0666);
	if (logfd < 0) {
		if (!(oflags & O_CREAT) && errno == ENOENT)
			return 0;

		if ((oflags & O_CREAT) && errno == EISDIR) {
			if (remove_empty_directories(logfile)) {
				return error("There are still logs under '%s'",
					     logfile);
			}
			logfd = open(logfile, oflags, 0666);
		}

		if (logfd < 0)
			return error("Unable to append to %s: %s",
				     logfile, strerror(errno));
	}

	adjust_shared_perm(logfile);
	close(logfd);
	return 0;
}
Esempio n. 4
0
File: refs.c Progetto: ratnikov/git
int rename_ref(const char *oldref, const char *newref, const char *logmsg)
{
	static const char renamed_ref[] = "RENAMED-REF";
	unsigned char sha1[20], orig_sha1[20];
	int flag = 0, logmoved = 0;
	struct ref_lock *lock;
	struct stat loginfo;
	int log = !lstat(git_path("logs/%s", oldref), &loginfo);
	const char *symref = NULL;

	if (log && S_ISLNK(loginfo.st_mode))
		return error("reflog for %s is a symlink", oldref);

	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(NULL), 0))
		return 1;

	if (!is_refname_available(newref, oldref, get_loose_refs(NULL), 0))
		return 1;

	lock = lock_ref_sha1_basic(renamed_ref, NULL, 0, NULL);
	if (!lock)
		return error("unable to lock %s", renamed_ref);
	lock->force_write = 1;
	if (write_ref_sha1(lock, orig_sha1, logmsg))
		return error("unable to save current sha1 in %s", renamed_ref);

	if (log && rename(git_path("logs/%s", oldref), git_path(TMP_RENAMED_LOG)))
		return error("unable to move logfile logs/%s to "TMP_RENAMED_LOG": %s",
			oldref, strerror(errno));

	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, REF_NODEREF)) {
		if (errno==EISDIR) {
			if (remove_empty_directories(git_path("%s", newref))) {
				error("Directory not empty: %s", newref);
				goto rollback;
			}
		} else {
			error("unable to delete existing %s", newref);
			goto rollback;
		}
	}

	if (log && safe_create_leading_directories(git_path("logs/%s", newref))) {
		error("unable to create directory for %s", newref);
		goto rollback;
	}

 retry:
	if (log && rename(git_path(TMP_RENAMED_LOG), git_path("logs/%s", newref))) {
		if (errno==EISDIR || errno==ENOTDIR) {
			/*
			 * rename(a, b) when b is an existing
			 * directory ought to result in ISDIR, but
			 * Solaris 5.8 gives ENOTDIR.  Sheesh.
			 */
			if (remove_empty_directories(git_path("logs/%s", newref))) {
				error("Directory not empty: logs/%s", newref);
				goto rollback;
			}
			goto retry;
		} else {
			error("unable to move logfile "TMP_RENAMED_LOG" to logs/%s: %s",
				newref, strerror(errno));
			goto rollback;
		}
	}
	logmoved = log;

	lock = lock_ref_sha1_basic(newref, NULL, 0, NULL);
	if (!lock) {
		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)) {
		error("unable to write current sha1 into %s", newref);
		goto rollback;
	}

	return 0;

 rollback:
	lock = lock_ref_sha1_basic(oldref, NULL, 0, NULL);
	if (!lock) {
		error("unable to lock %s for rollback", oldref);
		goto rollbacklog;
	}

	lock->force_write = 1;
	flag = log_all_ref_updates;
	log_all_ref_updates = 0;
	if (write_ref_sha1(lock, orig_sha1, NULL))
		error("unable to write current sha1 into %s", oldref);
	log_all_ref_updates = flag;

 rollbacklog:
	if (logmoved && rename(git_path("logs/%s", newref), git_path("logs/%s", oldref)))
		error("unable to restore logfile %s from %s: %s",
			oldref, newref, strerror(errno));
	if (!logmoved && log &&
	    rename(git_path(TMP_RENAMED_LOG), git_path("logs/%s", oldref)))
		error("unable to restore logfile %s from "TMP_RENAMED_LOG": %s",
			oldref, strerror(errno));

	return 1;
}
Esempio n. 5
0
File: refs.c Progetto: ratnikov/git
static struct ref_lock *lock_ref_sha1_basic(const char *ref, const unsigned char *old_sha1, int flags, int *type_p)
{
	char *ref_file;
	const char *orig_ref = ref;
	struct ref_lock *lock;
	int last_errno = 0;
	int type, lflags;
	int mustexist = (old_sha1 && !is_null_sha1(old_sha1));
	int missing = 0;

	lock = xcalloc(1, sizeof(struct ref_lock));
	lock->lock_fd = -1;

	ref = resolve_ref(ref, lock->old_sha1, mustexist, &type);
	if (!ref && errno == EISDIR) {
		/* we are trying to lock foo but we used to
		 * have foo/bar which now does not exist;
		 * it is normal for the empty directory 'foo'
		 * to remain.
		 */
		ref_file = git_path("%s", orig_ref);
		if (remove_empty_directories(ref_file)) {
			last_errno = errno;
			error("there are still refs under '%s'", orig_ref);
			goto error_return;
		}
		ref = resolve_ref(orig_ref, lock->old_sha1, mustexist, &type);
	}
	if (type_p)
	    *type_p = type;
	if (!ref) {
		last_errno = errno;
		error("unable to resolve reference %s: %s",
			orig_ref, strerror(errno));
		goto error_return;
	}
	missing = is_null_sha1(lock->old_sha1);
	/* When the ref did not exist and we are creating it,
	 * make sure there is no existing ref that is packed
	 * whose name begins with our refname, nor a ref whose
	 * name is a proper prefix of our refname.
	 */
	if (missing &&
	     !is_refname_available(ref, NULL, get_packed_refs(NULL), 0)) {
		last_errno = ENOTDIR;
		goto error_return;
	}

	lock->lk = xcalloc(1, sizeof(struct lock_file));

	lflags = LOCK_DIE_ON_ERROR;
	if (flags & REF_NODEREF) {
		ref = orig_ref;
		lflags |= LOCK_NODEREF;
	}
	lock->ref_name = xstrdup(ref);
	lock->orig_ref_name = xstrdup(orig_ref);
	ref_file = git_path("%s", ref);
	if (missing)
		lock->force_write = 1;
	if ((flags & REF_NODEREF) && (type & REF_ISSYMREF))
		lock->force_write = 1;

	if (safe_create_leading_directories(ref_file)) {
		last_errno = errno;
		error("unable to create directory for %s", ref_file);
		goto error_return;
	}

	lock->lock_fd = hold_lock_file_for_update(lock->lk, ref_file, lflags);
	return old_sha1 ? verify_lock(lock, old_sha1, mustexist) : lock;

 error_return:
	unlock_ref(lock);
	errno = last_errno;
	return NULL;
}