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0ad19a3f | 1 | /* |
2 | * lxc: linux Container library | |
3 | * | |
4 | * (C) Copyright IBM Corp. 2007, 2008 | |
5 | * | |
6 | * Authors: | |
9afe19d6 | 7 | * Daniel Lezcano <daniel.lezcano at free.fr> |
0ad19a3f | 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 | |
250b1eec | 21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
0ad19a3f | 22 | */ |
0ad19a3f | 23 | |
576f946d | 24 | #include <stdio.h> |
2ab8e9ba | 25 | #include <unistd.h> |
26 | #include <libgen.h> | |
27 | #include <sys/types.h> | |
28 | ||
9069513c | 29 | #include <lxc/lxccontainer.h> |
f2363e38 ÇO |
30 | |
31 | #include "lxc.h" | |
32 | #include "log.h" | |
4237c6ca | 33 | #include "arguments.h" |
0ad19a3f | 34 | |
6ea518f6 | 35 | lxc_log_define(lxc_cgroup_ui, lxc); |
3ab87b66 | 36 | |
4237c6ca | 37 | static int my_checker(const struct lxc_arguments* args) |
2ab8e9ba | 38 | { |
4237c6ca | 39 | if (!args->argc) { |
f10e7166 | 40 | lxc_error(args, "missing state object"); |
4237c6ca MN |
41 | return -1; |
42 | } | |
43 | return 0; | |
2ab8e9ba | 44 | } |
45 | ||
4237c6ca MN |
46 | static const struct option my_longopts[] = { |
47 | LXC_COMMON_OPTIONS | |
48 | }; | |
2ab8e9ba | 49 | |
4237c6ca MN |
50 | static struct lxc_arguments my_args = { |
51 | .progname = "lxc-cgroup", | |
52 | .help = "\ | |
f10e7166 | 53 | --name=NAME state-object [value]\n\ |
4237c6ca | 54 | \n\ |
f10e7166 DW |
55 | Get or set the value of a state object (for example, 'cpuset.cpus')\n\ |
56 | in the container's cgroup for the corresponding subsystem.\n\ | |
4237c6ca MN |
57 | \n\ |
58 | Options :\n\ | |
5e8757ed | 59 | -n, --name=NAME NAME of the container", |
4237c6ca MN |
60 | .options = my_longopts, |
61 | .parser = NULL, | |
62 | .checker = my_checker, | |
63 | }; | |
2ab8e9ba | 64 | |
4237c6ca MN |
65 | int main(int argc, char *argv[]) |
66 | { | |
f10e7166 | 67 | char *state_object = NULL, *value = NULL; |
9069513c | 68 | struct lxc_container *c; |
2ab8e9ba | 69 | |
272bc5af | 70 | if (lxc_arguments_parse(&my_args, argc, argv)) |
13bc2fd2 | 71 | return 1; |
2ab8e9ba | 72 | |
f5abd74d SG |
73 | if (!my_args.log_file) |
74 | my_args.log_file = "none"; | |
75 | ||
5e1e7aaf | 76 | if (lxc_log_init(my_args.name, my_args.log_file, my_args.log_priority, |
8d06bd13 | 77 | my_args.progname, my_args.quiet, my_args.lxcpath[0])) |
13bc2fd2 | 78 | return 1; |
6edbfc86 | 79 | lxc_log_options_no_override(); |
51cab631 | 80 | |
f10e7166 | 81 | state_object = my_args.argv[0]; |
2ab8e9ba | 82 | |
9069513c SH |
83 | c = lxc_container_new(my_args.name, my_args.lxcpath[0]); |
84 | if (!c) | |
13bc2fd2 | 85 | return 1; |
f5abd74d SG |
86 | |
87 | if (!c->may_control(c)) { | |
88 | ERROR("Insufficent privileges to control %s:%s", my_args.lxcpath[0], my_args.name); | |
f3e52710 | 89 | lxc_container_put(c); |
13bc2fd2 | 90 | return 1; |
f5abd74d SG |
91 | } |
92 | ||
9069513c SH |
93 | if (!c->is_running(c)) { |
94 | ERROR("'%s:%s' is not running", my_args.lxcpath[0], my_args.name); | |
95 | lxc_container_put(c); | |
13bc2fd2 | 96 | return 1; |
9069513c | 97 | } |
2ab8e9ba | 98 | |
9069513c SH |
99 | if ((my_args.argc) > 1) { |
100 | value = my_args.argv[1]; | |
101 | if (!c->set_cgroup_item(c, state_object, value)) { | |
4237c6ca | 102 | ERROR("failed to assign '%s' value to '%s' for '%s'", |
f10e7166 | 103 | value, state_object, my_args.name); |
9069513c | 104 | lxc_container_put(c); |
13bc2fd2 | 105 | return 1; |
2ab8e9ba | 106 | } |
107 | } else { | |
9069513c | 108 | int len = 4096; |
2ab8e9ba | 109 | char buffer[len]; |
9069513c | 110 | int ret = c->get_cgroup_item(c, state_object, buffer, len); |
70f7755e | 111 | if (ret < 0) { |
9069513c SH |
112 | ERROR("failed to retrieve value of '%s' for '%s:%s'", |
113 | state_object, my_args.lxcpath[0], my_args.name); | |
114 | lxc_container_put(c); | |
13bc2fd2 | 115 | return 1; |
2ab8e9ba | 116 | } |
70f7755e | 117 | printf("%*s", ret, buffer); |
2ab8e9ba | 118 | } |
119 | ||
9069513c | 120 | lxc_container_put(c); |
0ad19a3f | 121 | return 0; |
122 | } |