1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright (c) 2020 FUJITSU LIMITED. All rights reserved. 4 * Author: Yang Xu <xuyang2018.jy@cn.fujitsu.com> 5 */ 6 #ifndef LAPI_LOOP_H__ 7 #define LAPI_LOOP_H__ 8 9 #include "config.h" 10 #include <linux/types.h> 11 #include <linux/loop.h> 12 13 #ifndef LO_FLAGS_PARTSCAN 14 # define LO_FLAGS_PARTSCAN 8 15 #endif 16 17 #ifndef LO_FLAGS_DIRECT_IO 18 # define LO_FLAGS_DIRECT_IO 16 19 #endif 20 21 #ifndef LOOP_SET_CAPACITY 22 # define LOOP_SET_CAPACITY 0x4C07 23 #endif 24 25 #ifndef LOOP_SET_DIRECT_IO 26 # define LOOP_SET_DIRECT_IO 0x4C08 27 #endif 28 29 #ifndef LOOP_SET_BLOCK_SIZE 30 # define LOOP_SET_BLOCK_SIZE 0x4C09 31 #endif 32 33 #ifndef LOOP_CONFIGURE 34 # define LOOP_CONFIGURE 0x4C0A 35 #endif 36 37 #ifndef HAVE_STRUCT_LOOP_CONFIG 38 /* 39 * struct loop_config - Complete configuration for a loop device. 40 * @fd: fd of the file to be used as a backing file for the loop device. 41 * @block_size: block size to use; ignored if 0. 42 * @info: struct loop_info64 to configure the loop device with. 43 * 44 * This structure is used with the LOOP_CONFIGURE ioctl, and can be used to 45 * atomically setup and configure all loop device parameters at once. 46 */ 47 struct loop_config { 48 __u32 fd; 49 __u32 block_size; 50 struct loop_info64 info; 51 __u64 __reserved[8]; 52 }; 53 #endif 54 55 #endif /* LAPI_LOOP_H__ */ 56