]>
git.proxmox.com Git - mirror_lxc.git/blob - src/lxc/freezer.c
2 * lxc: linux Container library
4 * (C) Copyright IBM Corp. 2007, 2008
7 * Daniel Lezcano <daniel.lezcano at free.fr>
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.
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.
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
32 #include <sys/param.h>
33 #include <sys/types.h>
44 #include "string_utils.h"
46 lxc_log_define(freezer
, lxc
);
48 static int do_freeze_thaw(bool freeze
, struct lxc_conf
*conf
, const char *name
,
53 struct cgroup_ops
*cgroup_ops
;
54 const char *state
= freeze
? "FROZEN" : "THAWED";
56 lxc_state_t new_state
= freeze
? FROZEN
: THAWED
;
58 cgroup_ops
= cgroup_init(conf
);
62 ret
= cgroup_ops
->set(cgroup_ops
, "freezer.state", state
, name
, lxcpath
);
64 cgroup_exit(cgroup_ops
);
65 ERROR("Failed to freeze %s", name
);
70 ret
= cgroup_ops
->get(cgroup_ops
, "freezer.state", v
, sizeof(v
), name
, lxcpath
);
72 cgroup_exit(cgroup_ops
);
73 ERROR("Failed to get freezer state of %s", name
);
78 v
[lxc_char_right_gc(v
, strlen(v
))] = '\0';
80 ret
= strncmp(v
, state
, state_len
);
82 cgroup_exit(cgroup_ops
);
83 lxc_cmd_serve_state_clients(name
, lxcpath
, new_state
);
84 lxc_monitor_send_state(name
, new_state
, lxcpath
);
92 int lxc_freeze(struct lxc_conf
*conf
, const char *name
, const char *lxcpath
)
94 lxc_cmd_serve_state_clients(name
, lxcpath
, FREEZING
);
95 lxc_monitor_send_state(name
, FREEZING
, lxcpath
);
96 return do_freeze_thaw(true, conf
, name
, lxcpath
);
99 int lxc_unfreeze(struct lxc_conf
*conf
, const char *name
, const char *lxcpath
)
101 return do_freeze_thaw(false, conf
, name
, lxcpath
);