print_usage();
ret = check_arg_type(av[optind]);
- if (ret != BTRFS_ARG_BLKDEV) {
- fprintf(stderr, "'%s' is not a block device\n", av[optind]);
+ if (ret != BTRFS_ARG_BLKDEV && ret != BTRFS_ARG_REG) {
+ fprintf(stderr, "'%s' is not a block device or regular file\n",
+ av[optind]);
exit(1);
}
return ret;
}
+static int is_reg_file(const char *path)
+{
+ struct stat statbuf;
+
+ if (stat(path, &statbuf) < 0)
+ return -errno;
+ return S_ISREG(statbuf.st_mode);
+}
+
/*
* This function checks if the given input parameter is
* an uuid or a path
- * return -1: some error in the given input
- * return 0: unknow input
- * return 1: given input is uuid
- * return 2: given input is path
+ * return <0 : some error in the given input
+ * return BTRFS_ARG_UNKNOWN: unknown input
+ * return BTRFS_ARG_UUID: given input is uuid
+ * return BTRFS_ARG_MNTPOINT: given input is path
+ * return BTRFS_ARG_REG: given input is regular file
*/
int check_arg_type(const char *input)
{
if (is_mount_point(path) == 1)
return BTRFS_ARG_MNTPOINT;
+ if (is_reg_file(path))
+ return BTRFS_ARG_REG;
+
return BTRFS_ARG_UNKNOWN;
}
#define BTRFS_ARG_MNTPOINT 1
#define BTRFS_ARG_UUID 2
#define BTRFS_ARG_BLKDEV 3
+#define BTRFS_ARG_REG 4
#define BTRFS_UUID_UNPARSED_SIZE 37