fs/btrfs/ioctl.c

1129 	BTRFS_DEV_LOOKUP_ARGS(args);
1188 	args.devid = devid;
1189 	device = btrfs_find_device(fs_info->fs_devices, &args);
1805 	struct btrfs_ioctl_search_args_v2 args;
1814 	if (copy_from_user(&args, uarg, sizeof(args)))
1817 	buf_size = args.buf_size;
1823 	ret = search_ioctl(inode, &args.key, &buf_size,
1825 	if (ret == 0 && copy_to_user(&uarg->key, &args.key, sizeof(args.key)))
1917 				struct btrfs_ioctl_ino_lookup_user_args *args)
1923 	u64 dirid = args->dirid;
1948 		ptr = &args->path[BTRFS_INO_LOOKUP_USER_PATH_MAX - 1];
1975 			if (ptr < args->path) {
2034 		memmove(args->path, ptr, total_len);
2035 		args->path[total_len] = '\0';
2044 	key.offset = args->treeid;
2061 	if (args->dirid != btrfs_root_ref_dirid(leaf, rref)) {
2069 	read_extent_buffer(leaf, args->name, item_off, item_len);
2070 	args->name[item_len] = 0;
2082 	struct btrfs_ioctl_ino_lookup_args *args;
2085 	args = memdup_user(argp, sizeof(*args));
2086 	if (IS_ERR(args))
2087 		return PTR_ERR(args);
2093 	if (args->treeid == 0)
2094 		args->treeid = root->root_key.objectid;
2096 	if (args->objectid == BTRFS_FIRST_FREE_OBJECTID) {
2097 		args->name[0] = 0;
2107 					args->treeid, args->objectid,
2108 					args->name);
2111 	if (ret == 0 && copy_to_user(argp, args, sizeof(*args)))
2114 	kfree(args);
2132 	struct btrfs_ioctl_ino_lookup_user_args *args;
2136 	args = memdup_user(argp, sizeof(*args));
2137 	if (IS_ERR(args))
2138 		return PTR_ERR(args);
2142 	if (args->dirid == BTRFS_FIRST_FREE_OBJECTID &&
2148 		kfree(args);
2152 	ret = btrfs_search_path_in_tree_user(file_mnt_idmap(file), inode, args);
2154 	if (ret == 0 && copy_to_user(argp, args, sizeof(*args)))
2157 	kfree(args);
2735 	BTRFS_DEV_LOOKUP_ARGS(args);
2760 		args.devid = vol_args->devid;
2764 		ret = btrfs_get_dev_args_from_path(fs_info, &args, vol_args->name);
2779 	ret = btrfs_rm_device(fs_info, &args, &bdev_file);
2796 	btrfs_put_dev_args_from_path(&args);
2803 	BTRFS_DEV_LOOKUP_ARGS(args);
2825 		ret = btrfs_get_dev_args_from_path(fs_info, &args, vol_args->name);
2837 		ret = btrfs_rm_device(fs_info, &args, &bdev_file);
2847 	btrfs_put_dev_args_from_path(&args);
2910 	BTRFS_DEV_LOOKUP_ARGS(args);
2919 	args.devid = di_args->devid;
2921 		args.uuid = di_args->uuid;
2924 	dev = btrfs_find_device(fs_info->fs_devices, &args);
3258 	 * Copy scrub args to user space even if btrfs_scrub_dev() returned an
4444 	struct btrfs_ioctl_encoded_io_args args = { 0 };
4470 		args.iov = compat_ptr(args32.iov);
4471 		args.iovcnt = args32.iovcnt;
4472 		args.offset = args32.offset;
4473 		args.flags = args32.flags;
4479 		if (copy_from_user(&args, argp, copy_end)) {
4484 	if (args.flags != 0) {
4489 	ret = import_iovec(ITER_DEST, args.iov, args.iovcnt, ARRAY_SIZE(iovstack),
4498 	pos = args.offset;
4499 	ret = rw_verify_area(READ, file, &pos, args.len);
4506 	ret = btrfs_encoded_read(&kiocb, &iter, &args);
4510 				 (char *)&args + copy_end_kernel,
4511 				 sizeof(args) - copy_end_kernel))
4526 	struct btrfs_ioctl_encoded_io_args args;
4552 		args.iov = compat_ptr(args32.iov);
4553 		args.iovcnt = args32.iovcnt;
4554 		args.offset = args32.offset;
4555 		args.flags = args32.flags;
4556 		args.len = args32.len;
4557 		args.unencoded_len = args32.unencoded_len;
4558 		args.unencoded_offset = args32.unencoded_offset;
4559 		args.compression = args32.compression;
4560 		args.encryption = args32.encryption;
4561 		memcpy(args.reserved, args32.reserved, sizeof(args.reserved));
4566 		if (copy_from_user(&args, argp, sizeof(args))) {
4573 	if (args.flags != 0)
4575 	if (memchr_inv(args.reserved, 0, sizeof(args.reserved)))
4577 	if (args.compression == BTRFS_ENCODED_IO_COMPRESSION_NONE &&
4578 	    args.encryption == BTRFS_ENCODED_IO_ENCRYPTION_NONE)
4580 	if (args.compression >= BTRFS_ENCODED_IO_COMPRESSION_TYPES ||
4581 	    args.encryption >= BTRFS_ENCODED_IO_ENCRYPTION_TYPES)
4583 	if (args.unencoded_offset > args.unencoded_len)
4585 	if (args.len > args.unencoded_len - args.unencoded_offset)
4588 	ret = import_iovec(ITER_SOURCE, args.iov, args.iovcnt, ARRAY_SIZE(iovstack),
4597 	pos = args.offset;
4598 	ret = rw_verify_area(WRITE, file, &pos, args.len);
4610 	ret = btrfs_do_write_iter(&kiocb, &iter, &args);