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0ae4f887 GK |
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> |
0ae4f887 GK |
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 |
0ae4f887 GK |
22 | */ |
23 | ||
a0a2066d SH |
24 | #include <sys/types.h> |
25 | #include <sys/stat.h> | |
0ae4f887 GK |
26 | #include <errno.h> |
27 | #include <unistd.h> | |
28 | #include <stdlib.h> | |
29 | ||
e0b0b533 | 30 | #include "conf.h" |
0ae4f887 GK |
31 | #include "log.h" |
32 | #include "start.h" | |
8afb3e61 | 33 | #include "utils.h" |
0ae4f887 GK |
34 | |
35 | lxc_log_define(lxc_execute, lxc_start); | |
36 | ||
37 | struct execute_args { | |
38 | char *const *argv; | |
39 | int quiet; | |
40 | }; | |
41 | ||
42 | static int execute_start(struct lxc_handler *handler, void* data) | |
43 | { | |
44 | int j, i = 0; | |
45 | struct execute_args *my_args = data; | |
46 | char **argv; | |
e0b0b533 | 47 | int argc = 0, argc_add; |
a0a2066d | 48 | char *initpath; |
0ae4f887 GK |
49 | |
50 | while (my_args->argv[argc++]); | |
51 | ||
e0b0b533 DE |
52 | argc_add = 4; |
53 | if (my_args->quiet) | |
54 | argc_add++; | |
fabf7361 QH |
55 | if (!handler->conf->rootfs.path) { |
56 | argc_add += 4; | |
57 | if (lxc_log_has_valid_level()) | |
58 | argc_add += 2; | |
59 | } | |
e0b0b533 DE |
60 | |
61 | argv = malloc((argc + argc_add) * sizeof(*argv)); | |
0ae4f887 | 62 | if (!argv) |
e0b0b533 | 63 | goto out1; |
0ae4f887 | 64 | |
9d9c111c | 65 | initpath = choose_init(NULL); |
a0a2066d | 66 | if (!initpath) { |
1e1d1dca | 67 | ERROR("Failed to find an lxc-init or init.lxc"); |
e0b0b533 | 68 | goto out2; |
a0a2066d SH |
69 | } |
70 | argv[i++] = initpath; | |
0ae4f887 GK |
71 | if (my_args->quiet) |
72 | argv[i++] = "--quiet"; | |
e0b0b533 DE |
73 | if (!handler->conf->rootfs.path) { |
74 | argv[i++] = "--name"; | |
75 | argv[i++] = (char *)handler->name; | |
76 | argv[i++] = "--lxcpath"; | |
77 | argv[i++] = (char *)handler->lxcpath; | |
fabf7361 QH |
78 | |
79 | if (lxc_log_has_valid_level()) { | |
80 | argv[i++] = "--logpriority"; | |
81 | argv[i++] = (char *) | |
82 | lxc_log_priority_to_string(lxc_log_get_level()); | |
83 | } | |
e0b0b533 | 84 | } |
0ae4f887 GK |
85 | argv[i++] = "--"; |
86 | for (j = 0; j < argc; j++) | |
87 | argv[i++] = my_args->argv[j]; | |
88 | argv[i++] = NULL; | |
89 | ||
90 | NOTICE("exec'ing '%s'", my_args->argv[0]); | |
91 | ||
92 | execvp(argv[0], argv); | |
93 | SYSERROR("failed to exec %s", argv[0]); | |
e0b0b533 DE |
94 | free(initpath); |
95 | out2: | |
96 | free(argv); | |
97 | out1: | |
0ae4f887 GK |
98 | return 1; |
99 | } | |
100 | ||
101 | static int execute_post_start(struct lxc_handler *handler, void* data) | |
102 | { | |
103 | struct execute_args *my_args = data; | |
104 | NOTICE("'%s' started with pid '%d'", my_args->argv[0], handler->pid); | |
105 | return 0; | |
106 | } | |
107 | ||
108 | static struct lxc_operations execute_start_ops = { | |
109 | .start = execute_start, | |
110 | .post_start = execute_post_start | |
111 | }; | |
112 | ||
113 | int lxc_execute(const char *name, char *const argv[], int quiet, | |
aa460476 CB |
114 | struct lxc_handler *handler, const char *lxcpath, |
115 | bool backgrounded) | |
0ae4f887 | 116 | { |
aa460476 | 117 | struct execute_args args = {.argv = argv, .quiet = quiet}; |
0ae4f887 | 118 | |
47a46cf1 | 119 | if (lxc_check_inherited(handler->conf, false, &handler->conf->maincmd_fd, 1)) |
0ae4f887 GK |
120 | return -1; |
121 | ||
aa460476 CB |
122 | handler->conf->is_execute = 1; |
123 | return __lxc_start(name, handler, &execute_start_ops, &args, lxcpath, | |
124 | backgrounded); | |
0ae4f887 | 125 | } |