src/lxc/start.h

   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 #ifndef __lxc_state_h
  24 #define __lxc_state_h
  25
  26 #include <lxc/state.h>
  27 #include <sys/param.h>
  28
  29 struct lxc_conf;
  30
  31 struct start_arg;
  32 struct lxc_handler;
  33
  34 struct lxc_operations {
  35         int (*start)(struct lxc_handler *, struct start_arg *);
  36         int (*post_start)(struct lxc_handler *, struct start_arg *, int);
  37 };
  38
  39 struct lxc_handler {
  40         pid_t pid;
  41         char *name;
  42         lxc_state_t state;
  43         int sigfd;
  44         char nsgroup[MAXPATHLEN];
  45         sigset_t oldmask;
  46         struct lxc_conf *conf;
  47         struct lxc_operations *ops;
  48 };
  49
  50 struct start_arg {
  51         struct lxc_handler *handler;
  52         int sv[2];
  53         char *const *argv;
  54         int sfd;
  55 };
  56
  57 extern struct lxc_handler *lxc_init(const char *name, struct lxc_conf *);
  58 extern int lxc_spawn(struct lxc_handler *, struct start_arg *start_arg,
  59         int restart_flags);
  60
  61 extern int lxc_poll(const char *name, struct lxc_handler *handler);
  62 extern void lxc_abort(const char *name, struct lxc_handler *handler);
  63 extern void lxc_fini(const char *name, struct lxc_handler *handler);
  64 extern int lxc_set_state(const char *, struct lxc_handler *, lxc_state_t);
  65 extern int lxc_check_inherited(int fd_to_ignore);
  66
  67 #endif
  68