src/shared/loop-util.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 /***
   5   Copyright 2016 Lennart Poettering
   6 ***/
   7
   8 #include "macro.h"
   9
  10 typedef struct LoopDevice LoopDevice;
  11
  12 /* Some helpers for setting up loopback block devices */
  13
  14 struct LoopDevice {
  15         int fd;
  16         int nr;
  17         char *node;
  18         bool relinquished;
  19 };
  20
  21 int loop_device_make(int fd, int open_flags, LoopDevice **ret);
  22 int loop_device_make_by_path(const char *path, int open_flags, LoopDevice **ret);
  23
  24 LoopDevice* loop_device_unref(LoopDevice *d);
  25 DEFINE_TRIVIAL_CLEANUP_FUNC(LoopDevice*, loop_device_unref);
  26
  27 void loop_device_relinquish(LoopDevice *d);