src/lxc/destroy.c

   1 /*
   2  * lxc: linux Container library
   3  *
   4  * (C) Copyright IBM Corp. 2007, 2008
   5  *
   6  * Authors:
   7  * Daniel Lezcano <dlezcano at fr.ibm.com>
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  22  */
  23
  24 #include <stdio.h>
  25 #include <string.h>
  26 #include <stdlib.h>
  27 #include <dirent.h>
  28 #include <unistd.h>
  29 #include <errno.h>
  30 #include <sys/param.h>
  31
  32 #include <lxc/lxc.h>
  33
  34 static int remove_lxc_directory(const char *dirname)
  35 {
  36         char path[MAXPATHLEN];
  37
  38         sprintf(path, LXCPATH "/%s", dirname);
  39
  40         if (rmdir(path)) {
  41                 lxc_log_syserror("failed to remove %s directory", path);
  42                 return -1;
  43         }
  44
  45         return 0;
  46 }
  47
  48 int lxc_destroy(const char *name)
  49 {
  50         int ret = -1, lock;
  51         char path[MAXPATHLEN];
  52
  53         lock = lxc_get_lock(name);
  54         if (!lock) {
  55                 lxc_log_error("'%s' is busy", name);
  56                 goto out;
  57         }
  58
  59         if (lock < 0) {
  60                 lxc_log_error("failed to acquire the lock for '%s':%s",
  61                               name, strerror(-lock));
  62                 goto out;
  63         }
  64
  65         if (lxc_rmstate(name)) {
  66                 lxc_log_error("failed to remove state file for %s", name);
  67                 goto out_lock;
  68         }
  69
  70         snprintf(path, MAXPATHLEN, LXCPATH "/%s/init", name);
  71         unlink(path);
  72
  73         if (lxc_unconfigure(name)) {
  74                 lxc_log_error("failed to cleanup %s", name);
  75                 goto out_lock;
  76         }
  77
  78         if (remove_lxc_directory(name)) {
  79                 lxc_log_syserror("failed to remove '%s'", name);
  80                 goto out_lock;
  81         }
  82
  83         ret = 0;
  84
  85 out_lock:
  86         lxc_put_lock(lock);
  87 out:
  88         return ret;
  89 }