]>
Commit | Line | Data |
---|---|---|
5e97c3fc | 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 | */ | |
96c210bb | 23 | #define _GNU_SOURCE |
5e97c3fc | 24 | #include <stdio.h> |
96c210bb | 25 | #undef _GNU_SOURCE |
5e97c3fc | 26 | #include <libgen.h> |
96c210bb | 27 | #include <stdlib.h> |
5e97c3fc | 28 | #include <unistd.h> |
29 | #include <string.h> | |
b0a33c1e | 30 | #include <termios.h> |
31 | #include <errno.h> | |
c36583c3 | 32 | #include <fcntl.h> |
f8e09a0b | 33 | #include <signal.h> |
5e97c3fc | 34 | #include <sys/param.h> |
35 | #include <sys/utsname.h> | |
36 | #include <sys/types.h> | |
37 | #include <sys/socket.h> | |
c36583c3 | 38 | #include <sys/stat.h> |
5e97c3fc | 39 | #include <arpa/inet.h> |
40 | #include <netinet/in.h> | |
41 | #include <net/if.h> | |
42 | ||
fae349da DL |
43 | #include "log.h" |
44 | #include "lxc.h" | |
45 | #include "conf.h" | |
46 | #include "utils.h" | |
96c210bb | 47 | #include "config.h" |
fae349da DL |
48 | #include "confile.h" |
49 | #include "arguments.h" | |
36eb9bde CLG |
50 | |
51 | lxc_log_define(lxc_start, lxc); | |
5e97c3fc | 52 | |
c36583c3 DL |
53 | static int my_parser(struct lxc_arguments* args, int c, char* arg) |
54 | { | |
55 | switch (c) { | |
56 | case 'd': args->daemonize = 1; break; | |
48862401 | 57 | case 'f': args->rcfile = arg; break; |
c36583c3 DL |
58 | } |
59 | return 0; | |
60 | } | |
61 | ||
9618063c | 62 | static const struct option my_longopts[] = { |
c36583c3 | 63 | {"daemon", no_argument, 0, 'd'}, |
48862401 | 64 | {"rcfile", required_argument, 0, 'f'}, |
9618063c MN |
65 | LXC_COMMON_OPTIONS |
66 | }; | |
67 | ||
68 | static struct lxc_arguments my_args = { | |
69 | .progname = "lxc-start", | |
70 | .help = "\ | |
71 | --name=NAME -- COMMAND\n\ | |
72 | \n\ | |
73 | lxc-start start COMMAND in specified container NAME\n\ | |
74 | \n\ | |
75 | Options :\n\ | |
c36583c3 | 76 | -n, --name=NAME NAME for name of the container\n\ |
48862401 DL |
77 | -d, --daemon daemonize the container\n\ |
78 | -f, --rcfile=FILE Load configuration file FILE\n", | |
c36583c3 DL |
79 | .options = my_longopts, |
80 | .parser = my_parser, | |
81 | .checker = NULL, | |
82 | .daemonize = 0, | |
9618063c | 83 | }; |
5e97c3fc | 84 | |
f8e09a0b DL |
85 | static int save_tty(struct termios *tios) |
86 | { | |
87 | if (!isatty(0)) | |
88 | return 0; | |
89 | ||
90 | if (tcgetattr(0, tios)) | |
91 | WARN("failed to get current terminal settings : %s", | |
92 | strerror(errno)); | |
93 | ||
94 | return 0; | |
95 | } | |
96 | ||
97 | static int restore_tty(struct termios *tios) | |
98 | { | |
99 | struct termios current_tios; | |
100 | void (*oldhandler)(int); | |
101 | int ret; | |
102 | ||
103 | if (!isatty(0)) | |
104 | return 0; | |
105 | ||
106 | if (tcgetattr(0, ¤t_tios)) { | |
107 | ERROR("failed to get current terminal settings : %s", | |
108 | strerror(errno)); | |
109 | return -1; | |
110 | } | |
111 | ||
112 | if (!memcmp(tios, ¤t_tios, sizeof(*tios))) | |
113 | return 0; | |
114 | ||
f8e09a0b DL |
115 | oldhandler = signal(SIGTTOU, SIG_IGN); |
116 | ret = tcsetattr(0, TCSADRAIN, tios); | |
117 | if (ret) | |
118 | ERROR("failed to restore terminal attributes"); | |
119 | signal(SIGTTOU, oldhandler); | |
120 | ||
121 | return ret; | |
122 | } | |
123 | ||
5e97c3fc | 124 | int main(int argc, char *argv[]) |
125 | { | |
9618063c | 126 | char *const *args; |
e043236e | 127 | int err = -1; |
b0a33c1e | 128 | struct termios tios; |
129 | ||
9618063c | 130 | char *const default_args[] = { |
b2b6c597 | 131 | "/sbin/init", |
132 | '\0', | |
133 | }; | |
5e97c3fc | 134 | |
96c210bb | 135 | char *rcfile = NULL; |
fae349da | 136 | struct lxc_conf conf; |
96c210bb | 137 | |
e043236e MN |
138 | if (lxc_arguments_parse(&my_args, argc, argv)) |
139 | return err; | |
5e97c3fc | 140 | |
9618063c | 141 | if (!my_args.argc) |
b2b6c597 | 142 | args = default_args; |
9618063c MN |
143 | else |
144 | args = my_args.argv; | |
5e97c3fc | 145 | |
9618063c MN |
146 | if (lxc_log_init(my_args.log_file, my_args.log_priority, |
147 | my_args.progname, my_args.quiet)) | |
e043236e | 148 | return err; |
51cab631 | 149 | |
96c210bb DL |
150 | /* rcfile is specified in the cli option */ |
151 | if (my_args.rcfile) | |
152 | rcfile = (char *)my_args.rcfile; | |
153 | else { | |
7418c9ce | 154 | if (!asprintf(&rcfile, LXCPATH "/%s/config", my_args.name)) { |
96c210bb DL |
155 | SYSERROR("failed to allocate memory"); |
156 | return err; | |
157 | } | |
158 | ||
159 | /* container configuration does not exist */ | |
160 | if (access(rcfile, F_OK)) { | |
161 | free(rcfile); | |
162 | rcfile = NULL; | |
163 | } | |
164 | } | |
165 | ||
fae349da DL |
166 | if (lxc_conf_init(&conf)) { |
167 | ERROR("failed to initialze configuration"); | |
168 | return err; | |
169 | } | |
170 | ||
171 | if (rcfile && lxc_config_read(rcfile, &conf)) { | |
172 | ERROR("failed to read configuration file"); | |
173 | return err; | |
174 | } | |
175 | ||
b8f57738 DL |
176 | if (my_args.daemonize) { |
177 | ||
178 | /* do not chdir as we want to open the log file, | |
179 | * change the directory right after. | |
180 | * do not close 0, 1, 2, we want to do that | |
181 | * ourself because we don't want /dev/null | |
182 | * being reopened. | |
183 | */ | |
af795875 | 184 | if (daemon(1, 1)) { |
b8f57738 DL |
185 | SYSERROR("failed to daemonize '%s'", my_args.name); |
186 | return err; | |
187 | } | |
188 | ||
af795875 DL |
189 | lxc_close_inherited_fd(0); |
190 | lxc_close_inherited_fd(1); | |
191 | lxc_close_inherited_fd(2); | |
b8f57738 DL |
192 | |
193 | if (my_args.log_file) { | |
194 | open(my_args.log_file, O_WRONLY | O_CLOEXEC); | |
195 | open(my_args.log_file, O_RDONLY | O_CLOEXEC); | |
196 | open(my_args.log_file, O_RDONLY | O_CLOEXEC); | |
197 | } | |
c36583c3 DL |
198 | } |
199 | ||
f8e09a0b | 200 | save_tty(&tios); |
b0a33c1e | 201 | |
fae349da | 202 | err = lxc_start(my_args.name, args, &conf); |
5e97c3fc | 203 | |
f8e09a0b | 204 | restore_tty(&tios); |
b0a33c1e | 205 | |
206 | return err; | |
5e97c3fc | 207 | } |
208 |