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         pr = blkidtiny_new_probe();
  28         if (!pr)
  29                 return NULL;
  30
  31         if (probe_block((char *)path, pr) == 0 && pr->id && !pr->err) {
  32                 info = calloc_a(sizeof(*info),
  33                                 &type,    strlen(pr->id->name) + 1,
  34                                 &dev,     strlen(path)         + 1,
  35                                 &uuid,    strlen(pr->uuid)     + 1,
  36                                 &label,   strlen(pr->label)    + 1,
  37                                 &version, strlen(pr->version)  + 1);
  38
  39                 if (info) {
  40                         info->type = strcpy(type, pr->id->name);
  41                         info->dev = strcpy(dev, path);
  42
  43                         if (pr->uuid[0])
  44                                 info->uuid = strcpy(uuid, pr->uuid);
  45
  46                         if (pr->label[0])
  47                                 info->label = strcpy(label, pr->label);
  48
  49                         if (pr->version[0])
  50                                 info->version = strcpy(version, pr->version);
  51                 }
  52         }
  53
  54         blkidtiny_free_probe(pr);
  55
  56         return info;
  57 }
  58
  59 struct probe_info *
  60 probe_path(const char *path)
  61 {
  62         struct probe_info *info;
  63
  64         info = probe_path_tiny(path);
  65
  66         if (!info)
  67                 info = probe_path_libblkid(path);
  68
  69         return info;
  70 }
  71
  72 int
  73 make_devs(void)
  74 {
  75         return mkblkdev();
  76 }