libfstools/volume.c

   1 /*
   2  * Copyright (C) 2014 John Crispin <blogic@openwrt.org>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU Lesser General Public License version 2.1
   6  * as published by the Free Software Foundation
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  */
  13
  14 #include <sys/mount.h>
  15 #include <stdio.h>
  16 #include <stdlib.h>
  17
  18 #include "libfstools.h"
  19 #include "volume.h"
  20
  21 static LIST_HEAD(drivers);
  22
  23 void
  24 volume_register_driver(struct driver *d)
  25 {
  26         struct driver *cur, *tmp;
  27
  28         list_for_each_entry_safe(cur, tmp, &drivers, list) {
  29                 if (d->priority <= cur->priority)
  30                         continue;
  31
  32                 _list_add(&d->list, cur->list.prev, &cur->list);
  33                 return;
  34         }
  35         list_add_tail(&d->list, &drivers);
  36 }
  37
  38 struct volume* volume_find(char *name)
  39 {
  40         struct volume *v;
  41         struct driver *d;
  42
  43         list_for_each_entry(d, &drivers, list) {
  44                 if (d->find) {
  45                         v = d->find(name);
  46                         if (v)
  47                                 return v;
  48                 }
  49         }
  50
  51         return NULL;
  52 }