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 #ifndef MDASSEMBLE_AUTO
  30 /* from mdopen.c */
  31 int open_mddev(char *dev, int report_errors/*unused*/)
  32 {
  33         int mdfd = open(dev, O_RDWR);
  34         if (mdfd < 0)
  35                 pr_err("error opening %s: %s\n",
  36                         dev, strerror(errno));
  37         else if (md_get_version(mdfd) <= 0) {
  38                 pr_err("%s does not appear to be an md device\n",
  39                         dev);
  40                 close(mdfd);
  41                 mdfd = -1;
  42         }
  43         return mdfd;
  44 }
  45 int create_mddev(char *dev, char *name, int autof/*unused*/, int trustworthy,
  46                  char *chosen)
  47 {
  48         return open_mddev(dev, 0);
  49 }
  50 #endif
  51 int map_update(struct map_ent **mpp, char *devnm, char *metadata,
  52                int *uuid, char *path)
  53 {
  54         return 0;
  55 }
  56 struct map_ent *map_by_name(struct map_ent **mpp, char *name)
  57 {
  58         return NULL;
  59 }
  60 int map_lock(struct map_ent **melp){return 0;}
  61 void map_unlock(struct map_ent **melp){}
  62 struct map_ent *map_by_uuid(struct map_ent **map, int uuid[4]){return NULL;}
  63
  64 int rv;
  65 int mdfd = -1;
  66
  67 int main(int argc, char *argv[])
  68 {
  69         struct mddev_ident *array_list =  conf_get_ident(NULL);
  70         struct context c = { .freeze_reshape = 1 };
  71         if (!array_list) {
  72                 pr_err("No arrays found in config file\n");
  73                 rv = 1;
  74         } else
  75                 for (; array_list; array_list = array_list->next) {
  76                         mdu_array_info_t array;
  77                         if (strcasecmp(array_list->devname, "<ignore>") == 0)
  78                                 continue;
  79                         mdfd = open_mddev(array_list->devname, 0);
  80                         if (mdfd >= 0 && ioctl(mdfd, GET_ARRAY_INFO, &array) == 0) {
  81                                 rv |= Manage_ro(array_list->devname, mdfd, -1); /* make it readwrite */
  82                                 continue;
  83                         }
  84                         if (mdfd >= 0)
  85                                 close(mdfd);
  86                         rv |= Assemble(array_list->st, array_list->devname,
  87                                        array_list, NULL, &c);
  88                 }
  89         return rv;
  90 }