probe.c

   1 /*
   2  * Copyright (C) 2016 Jo-Philipp Wich <jo@mein.io>
   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 <string.h>
  15 #include <libubox/utils.h>
  16
  17 #include "probe.h"
  18 #include "libblkid-tiny/libblkid-tiny.h"
  19
  20 static struct probe_info *
  21 probe_path_tiny(const char *path)
  22 {
  23         struct probe_info *info = NULL;
  24         struct blkid_struct_probe pr = { };
  25         char *type, *dev, *uuid, *label, *version;
  26
  27         if (probe_block((char *)path, &pr) == 0 && pr.id && !pr.err) {
  28                 info = calloc_a(sizeof(*info),
  29                                 &type,    strlen(pr.id->name) + 1,
  30                                 &dev,     strlen(pr.dev)      + 1,
  31                                 &uuid,    strlen(pr.uuid)     + 1,
  32                                 &label,   strlen(pr.label)    + 1,
  33                                 &version, strlen(pr.version)  + 1);
  34
  35                 if (info) {
  36                         info->type = strcpy(type, pr.id->name);
  37
  38                         if (pr.dev[0])
  39                                 info->dev = strcpy(dev, pr.dev);
  40
  41                         if (pr.uuid[0])
  42                                 info->uuid = strcpy(uuid, pr.uuid);
  43
  44                         if (pr.label[0])
  45                                 info->label = strcpy(label, pr.label);
  46
  47                         if (pr.version[0])
  48                                 info->version = strcpy(version, pr.version);
  49                 }
  50         }
  51
  52         return info;
  53 }
  54
  55 struct probe_info *
  56 probe_path(const char *path)
  57 {
  58         struct probe_info *info;
  59
  60         info = probe_path_tiny(path);
  61
  62         if (!info)
  63                 info = probe_path_libblkid(path);
  64
  65         return info;
  66 }
  67
  68 int
  69 make_devs(void)
  70 {
  71         return mkblkdev();
  72 }