Ejemplo n.º 1
0
static void lock_disk(struct fsck_instance *inst)
{
	dev_t disk = fs_get_disk(inst->fs, 1);
	char *diskname;

	if (!disk || is_irrotational_disk(disk))
		return;

	diskname = blkid_devno_to_devname(disk);
	if (!diskname)
		return;

	if (verbose)
		printf(_("Locking disk %s ... "), diskname);

	inst->lock = open(diskname, O_CLOEXEC | O_RDONLY);
	if (inst->lock >= 0) {
		int rc = -1;

		/* inform users that we're waiting on the lock */
		if (verbose &&
		    (rc = flock(inst->lock, LOCK_EX | LOCK_NB)) != 0 &&
		    errno == EWOULDBLOCK)
			printf(_("(waiting) "));

		if (rc != 0 && flock(inst->lock, LOCK_EX) != 0) {
			close(inst->lock);			/* failed */
			inst->lock = -1;
		}
	}

	if (verbose)
		/* TRANSLATORS: These are followups to "Locking disk...". */
		printf("%s.\n", inst->lock >= 0 ? _("succeeded") : _("failed"));

	free(diskname);
	return;
}
Ejemplo n.º 2
0
static void lock_disk(struct fsck_instance *inst)
{
	dev_t disk = fs_get_disk(inst->fs, 1);
	char *diskpath = NULL, *diskname;

	inst->lock = -1;

	if (!disk || is_irrotational_disk(disk))
		goto done;

	diskpath = blkid_devno_to_devname(disk);
	if (!diskpath)
		goto done;

	if (access(FSCK_RUNTIME_DIRNAME, F_OK) != 0) {
		int rc = mkdir(FSCK_RUNTIME_DIRNAME,
				    S_IWUSR|
				    S_IRUSR|S_IRGRP|S_IROTH|
				    S_IXUSR|S_IXGRP|S_IXOTH);
		if (rc && errno != EEXIST) {
			warn(_("cannot create directory %s"),
					FSCK_RUNTIME_DIRNAME);
			goto done;
		}
	}

	diskname = stripoff_last_component(diskpath);
	if (!diskname)
		diskname = diskpath;

	xasprintf(&inst->lockpath, FSCK_RUNTIME_DIRNAME "/%s.lock", diskname);

	if (verbose)
		printf(_("Locking disk by %s ... "), inst->lockpath);

	inst->lock = open(inst->lockpath, O_RDONLY|O_CREAT|O_CLOEXEC,
				    S_IWUSR|S_IRUSR|S_IRGRP|S_IROTH);
	if (inst->lock >= 0) {
		int rc = -1;

		/* inform users that we're waiting on the lock */
		if (verbose &&
		    (rc = flock(inst->lock, LOCK_EX | LOCK_NB)) != 0 &&
		    errno == EWOULDBLOCK)
			printf(_("(waiting) "));

		if (rc != 0 && flock(inst->lock, LOCK_EX) != 0) {
			close(inst->lock);			/* failed */
			inst->lock = -1;
		}
	}

	if (verbose)
		/* TRANSLATORS: These are followups to "Locking disk...". */
		printf("%s.\n", inst->lock >= 0 ? _("succeeded") : _("failed"));


done:
	if (inst->lock < 0) {
		free(inst->lockpath);
		inst->lockpath = NULL;
	}
	free(diskpath);
	return;
}