fs/btrfs/ioctl.c

230 int btrfs_check_ioctl_vol_args_path(const struct btrfs_ioctl_vol_args *vol_args)
232 	if (memchr(vol_args->name, 0, sizeof(vol_args->name)) == NULL)
1136 	struct btrfs_ioctl_vol_args *vol_args;
1157 	vol_args = memdup_user(arg, sizeof(*vol_args));
1158 	if (IS_ERR(vol_args)) {
1159 		ret = PTR_ERR(vol_args);
1162 	ret = btrfs_check_ioctl_vol_args_path(vol_args);
1166 	sizestr = vol_args->name;
1177 		devstr = vol_args->name;
1274 	kfree(vol_args);
1356 	struct btrfs_ioctl_vol_args *vol_args;
1362 	vol_args = memdup_user(arg, sizeof(*vol_args));
1363 	if (IS_ERR(vol_args))
1364 		return PTR_ERR(vol_args);
1365 	ret = btrfs_check_ioctl_vol_args_path(vol_args);
1370 					vol_args->name, vol_args->fd, subvol,
1374 	kfree(vol_args);
1381 	struct btrfs_ioctl_vol_args_v2 *vol_args;
1389 	vol_args = memdup_user(arg, sizeof(*vol_args));
1390 	if (IS_ERR(vol_args))
1391 		return PTR_ERR(vol_args);
1392 	ret = btrfs_check_ioctl_vol_args2_subvol_name(vol_args);
1396 	if (vol_args->flags & ~BTRFS_SUBVOL_CREATE_ARGS_MASK) {
1401 	if (vol_args->flags & BTRFS_SUBVOL_RDONLY)
1403 	if (vol_args->flags & BTRFS_SUBVOL_QGROUP_INHERIT) {
1406 		if (vol_args->size < sizeof(*inherit) ||
1407 		    vol_args->size > PAGE_SIZE) {
1411 		inherit = memdup_user(vol_args->qgroup_inherit, vol_args->size);
1417 		ret = btrfs_qgroup_check_inherit(fs_info, inherit, vol_args->size);
1423 					vol_args->name, vol_args->fd, subvol,
1430 	kfree(vol_args);
2384 	struct btrfs_ioctl_vol_args *vol_args = NULL;
2496 		vol_args = memdup_user(arg, sizeof(*vol_args));
2497 		if (IS_ERR(vol_args))
2498 			return PTR_ERR(vol_args);
2500 		err = btrfs_check_ioctl_vol_args_path(vol_args);
2504 		subvol_name = vol_args->name;
2603 	kfree(vol_args);
2676 	struct btrfs_ioctl_vol_args *vol_args;
2708 	vol_args = memdup_user(arg, sizeof(*vol_args));
2709 	if (IS_ERR(vol_args)) {
2710 		ret = PTR_ERR(vol_args);
2714 	ret = btrfs_check_ioctl_vol_args_path(vol_args);
2718 	ret = btrfs_init_new_device(fs_info, vol_args->name);
2721 		btrfs_info(fs_info, "disk added %s", vol_args->name);
2724 	kfree(vol_args);
2738 	struct btrfs_ioctl_vol_args_v2 *vol_args;
2746 	vol_args = memdup_user(arg, sizeof(*vol_args));
2747 	if (IS_ERR(vol_args))
2748 		return PTR_ERR(vol_args);
2750 	if (vol_args->flags & ~BTRFS_DEVICE_REMOVE_ARGS_MASK) {
2755 	ret = btrfs_check_ioctl_vol_args2_subvol_name(vol_args);
2759 	if (vol_args->flags & BTRFS_DEVICE_SPEC_BY_ID) {
2760 		args.devid = vol_args->devid;
2761 	} else if (!strcmp("cancel", vol_args->name)) {
2764 		ret = btrfs_get_dev_args_from_path(fs_info, &args, vol_args->name);
2784 		if (vol_args->flags & BTRFS_DEVICE_SPEC_BY_ID)
2786 					vol_args->devid);
2789 					vol_args->name);
2797 	kfree(vol_args);
2806 	struct btrfs_ioctl_vol_args *vol_args;
2814 	vol_args = memdup_user(arg, sizeof(*vol_args));
2815 	if (IS_ERR(vol_args))
2816 		return PTR_ERR(vol_args);
2818 	ret = btrfs_check_ioctl_vol_args_path(vol_args);
2822 	if (!strcmp("cancel", vol_args->name)) {
2825 		ret = btrfs_get_dev_args_from_path(fs_info, &args, vol_args->name);
2839 			btrfs_info(fs_info, "disk deleted %s", vol_args->name);
2849 	kfree(vol_args);