#ifdef __CHECKER__
#define BLKGETSIZE64 0
-#define BTRFS_IOC_SNAP_CREATE 0
+#define BTRFS_IOC_SNAP_CREATE_V2 0
#define BTRFS_VOL_NAME_MAX 255
struct btrfs_ioctl_vol_args { char name[BTRFS_VOL_NAME_MAX]; };
static inline int ioctl(int fd, int define, void *arg) { return 0; }
int do_clone(int argc, char **argv)
{
char *subvol, *dst;
- int res, fd, fddst, len, e;
+ int res, fd, fddst, len, e, optind = 0, readonly = 0;
char *newname;
char *dstdir;
+ struct btrfs_ioctl_vol_args_v2 args;
- subvol = argv[1];
- dst = argv[2];
- struct btrfs_ioctl_vol_args args;
+ memset(&args, 0, sizeof(args));
+
+ while (1) {
+ int c = getopt(argc, argv, "r");
+
+ if (c < 0)
+ break;
+ switch (c) {
+ case 'r':
+ optind++;
+ readonly = 1;
+ break;
+ default:
+ fprintf(stderr,
+ "Invalid arguments for subvolume snapshot\n");
+ free(argv);
+ return 1;
+ }
+ }
+ if (argc - optind < 2) {
+ fprintf(stderr, "Invalid arguments for subvolume snapshot\n");
+ free(argv);
+ return 1;
+ }
+
+ subvol = argv[optind+1];
+ dst = argv[optind+2];
res = test_issubvolume(subvol);
if(res<0){
return 12;
}
- printf("Create a snapshot of '%s' in '%s/%s'\n",
- subvol, dstdir, newname);
+ if (readonly) {
+ args.flags |= BTRFS_SUBVOL_RDONLY;
+ printf("Create a readonly snapshot of '%s' in '%s/%s'\n",
+ subvol, dstdir, newname);
+ } else {
+ printf("Create a snapshot of '%s' in '%s/%s'\n",
+ subvol, dstdir, newname);
+ }
+
args.fd = fd;
strncpy(args.name, newname, BTRFS_PATH_NAME_MAX);
- res = ioctl(fddst, BTRFS_IOC_SNAP_CREATE, &args);
+ res = ioctl(fddst, BTRFS_IOC_SNAP_CREATE_V2, &args);
e = errno;
close(fd);