src/shared/loop-util.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 /***
   5   This file is part of systemd.
   6
   7   Copyright 2016 Lennart Poettering
   8 ***/
   9
  10 #include "macro.h"
  11
  12 typedef struct LoopDevice LoopDevice;
  13
  14 /* Some helpers for setting up loopback block devices */
  15
  16 struct LoopDevice {
  17         int fd;
  18         int nr;
  19         char *node;
  20         bool relinquished;
  21 };
  22
  23 int loop_device_make(int fd, int open_flags, LoopDevice **ret);
  24 int loop_device_make_by_path(const char *path, int open_flags, LoopDevice **ret);
  25
  26 LoopDevice* loop_device_unref(LoopDevice *d);
  27 DEFINE_TRIVIAL_CLEANUP_FUNC(LoopDevice*, loop_device_unref);
  28
  29 void loop_device_relinquish(LoopDevice *d);