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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
8c1be37e LP |
2 | #pragma once |
3 | ||
8c1be37e LP |
4 | #include "macro.h" |
5 | ||
6 | typedef struct LoopDevice LoopDevice; | |
7 | ||
8 | /* Some helpers for setting up loopback block devices */ | |
9 | ||
10 | struct LoopDevice { | |
11 | int fd; | |
12 | int nr; | |
13 | char *node; | |
a2ea3b2f | 14 | bool relinquished; |
8c1be37e LP |
15 | }; |
16 | ||
1b49e3e3 | 17 | int loop_device_make(int fd, int open_flags, uint64_t offset, uint64_t size, uint32_t loop_flags, LoopDevice **ret); |
e08f94ac | 18 | int loop_device_make_by_path(const char *path, int open_flags, uint32_t loop_flags, LoopDevice **ret); |
9dabc4fd | 19 | int loop_device_open(const char *loop_path, int open_flags, LoopDevice **ret); |
8c1be37e LP |
20 | |
21 | LoopDevice* loop_device_unref(LoopDevice *d); | |
8c1be37e | 22 | DEFINE_TRIVIAL_CLEANUP_FUNC(LoopDevice*, loop_device_unref); |
a2ea3b2f LP |
23 | |
24 | void loop_device_relinquish(LoopDevice *d); | |
9dabc4fd | 25 | |
c37878fc | 26 | int loop_device_refresh_size(LoopDevice *d, uint64_t offset, uint64_t size); |
441ec804 LP |
27 | |
28 | int loop_device_flock(LoopDevice *d, int operation); |