mdassemble.c

   1 /*
   2  * mdassemble - assemble Linux "md" devices aka RAID arrays.
   3  *
   4  * Copyright (C) 2001-2009 Neil Brown <neilb@suse.de>
   5  * Copyright (C) 2003 Luca Berra <bluca@vodka.it>
   6  *
   7  *
   8  *    This program is free software; you can redistribute it and/or modify
   9  *    it under the terms of the GNU General Public License as published by
  10  *    the Free Software Foundation; either version 2 of the License, or
  11  *    (at your option) any later version.
  12  *
  13  *    This program is distributed in the hope that it will be useful,
  14  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *    GNU General Public License for more details.
  17  *
  18  *    You should have received a copy of the GNU General Public License
  19  *    along with this program; if not, write to the Free Software
  20  *    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  *    Author: Neil Brown
  23  *    Email: <neilb@suse.de>
  24  */
  25
  26 #include "mdadm.h"
  27 #include "md_p.h"
  28
  29 char const Name[] = "mdassemble";
  30
  31 #ifndef MDASSEMBLE_AUTO
  32 /* from mdopen.c */
  33 int open_mddev(char *dev, int report_errors/*unused*/)
  34 {
  35         int mdfd = open(dev, O_RDWR);
  36         if (mdfd < 0)
  37                 pr_err("error opening %s: %s\n",
  38                         dev, strerror(errno));
  39         else if (md_get_version(mdfd) <= 0) {
  40                 pr_err("%s does not appear to be an md device\n",
  41                         dev);
  42                 close(mdfd);
  43                 mdfd = -1;
  44         }
  45         return mdfd;
  46 }
  47 int create_mddev(char *dev, char *name, int autof/*unused*/, int trustworthy,
  48                  char *chosen)
  49 {
  50         return open_mddev(dev, 0);
  51 }
  52 #endif
  53
  54 int rv;
  55 int mdfd = -1;
  56
  57 int main(int argc, char *argv[])
  58 {
  59         struct mddev_ident *array_list =  conf_get_ident(NULL);
  60         struct context c = { .freeze_reshape = 1 };
  61         if (!array_list) {
  62                 pr_err("No arrays found in config file\n");
  63                 rv = 1;
  64         } else
  65                 for (; array_list; array_list = array_list->next) {
  66                         mdu_array_info_t array;
  67                         if (strcasecmp(array_list->devname, "<ignore>") == 0)
  68                                 continue;
  69                         mdfd = open_mddev(array_list->devname, 0);
  70                         if (mdfd >= 0 && ioctl(mdfd, GET_ARRAY_INFO, &array) == 0) {
  71                                 rv |= Manage_ro(array_list->devname, mdfd, -1); /* make it readwrite */
  72                                 continue;
  73                         }
  74                         if (mdfd >= 0)
  75                                 close(mdfd);
  76                         rv |= Assemble(array_list->st, array_list->devname,
  77                                        array_list, NULL, &c);
  78                 }
  79         return rv;
  80 }