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Commit | Line | Data |
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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 | ||
cd90db2c | 24 | #define _GNU_SOURCE |
a0a2066d SH |
25 | #include <sys/types.h> |
26 | #include <sys/stat.h> | |
0ae4f887 GK |
27 | #include <errno.h> |
28 | #include <unistd.h> | |
29 | #include <stdlib.h> | |
cd90db2c | 30 | #include <stdio.h> |
0ae4f887 | 31 | |
e0b0b533 | 32 | #include "conf.h" |
0ae4f887 GK |
33 | #include "log.h" |
34 | #include "start.h" | |
8afb3e61 | 35 | #include "utils.h" |
0ae4f887 GK |
36 | |
37 | lxc_log_define(lxc_execute, lxc_start); | |
38 | ||
0ae4f887 GK |
39 | static int execute_start(struct lxc_handler *handler, void* data) |
40 | { | |
cd90db2c | 41 | int j, i = 0, log = -1; |
0ae4f887 | 42 | struct execute_args *my_args = data; |
cd90db2c | 43 | char **argv, *logfd; |
e0b0b533 | 44 | int argc = 0, argc_add; |
0ae4f887 GK |
45 | |
46 | while (my_args->argv[argc++]); | |
47 | ||
858faf70 SH |
48 | /* lxc-init -n name -- [argc] NULL -> 5 */ |
49 | argc_add = 5; | |
e0b0b533 DE |
50 | if (my_args->quiet) |
51 | argc_add++; | |
858faf70 SH |
52 | if (!handler->conf->rootfs.path) |
53 | argc_add += 2; | |
54 | if (lxc_log_has_valid_level()) | |
55 | argc_add += 2; | |
e0b0b533 DE |
56 | |
57 | argv = malloc((argc + argc_add) * sizeof(*argv)); | |
0ae4f887 | 58 | if (!argv) |
e0b0b533 | 59 | goto out1; |
0ae4f887 | 60 | |
794248d0 | 61 | if (!my_args->init_path) |
e0b0b533 | 62 | goto out2; |
794248d0 CB |
63 | |
64 | argv[i++] = my_args->init_path; | |
a6f151a7 CB |
65 | |
66 | argv[i++] = "-n"; | |
67 | argv[i++] = (char *)handler->name; | |
68 | ||
69 | if (lxc_log_has_valid_level()) { | |
70 | argv[i++] = "-l"; | |
71 | argv[i++] = (char *)lxc_log_priority_to_string(lxc_log_get_level()); | |
72 | } | |
73 | ||
cd90db2c TA |
74 | if (current_config->logfd != -1 || lxc_log_fd != -1) { |
75 | int to_dup = current_config->logfd; | |
76 | ||
77 | if (current_config->logfd == -1) | |
78 | to_dup = lxc_log_fd; | |
79 | ||
80 | log = dup(to_dup); | |
81 | if (log < 0) { | |
82 | SYSERROR("dup of log fd failed"); | |
83 | goto out2; | |
84 | } | |
85 | ||
86 | if (asprintf(&logfd, "/proc/1/fd/%d", log) < 0) { | |
87 | ERROR("Couldn't allocate memory for log string"); | |
88 | goto out3; | |
89 | } | |
90 | ||
8f98ac7b | 91 | argv[i++] = "-o"; |
cd90db2c | 92 | argv[i++] = logfd; |
8f98ac7b CB |
93 | } |
94 | ||
0ae4f887 GK |
95 | if (my_args->quiet) |
96 | argv[i++] = "--quiet"; | |
a6f151a7 | 97 | |
e0b0b533 | 98 | if (!handler->conf->rootfs.path) { |
a6f151a7 | 99 | argv[i++] = "-P"; |
e0b0b533 | 100 | argv[i++] = (char *)handler->lxcpath; |
e0b0b533 | 101 | } |
a6f151a7 | 102 | |
0ae4f887 GK |
103 | argv[i++] = "--"; |
104 | for (j = 0; j < argc; j++) | |
105 | argv[i++] = my_args->argv[j]; | |
106 | argv[i++] = NULL; | |
107 | ||
a6f151a7 | 108 | NOTICE("Exec'ing \"%s\"", my_args->argv[0]); |
0ae4f887 GK |
109 | |
110 | execvp(argv[0], argv); | |
a6f151a7 | 111 | SYSERROR("Failed to exec %s", argv[0]); |
794248d0 | 112 | |
cd90db2c TA |
113 | free(logfd); |
114 | out3: | |
115 | close(log); | |
e0b0b533 DE |
116 | out2: |
117 | free(argv); | |
118 | out1: | |
0ae4f887 GK |
119 | return 1; |
120 | } | |
121 | ||
122 | static int execute_post_start(struct lxc_handler *handler, void* data) | |
123 | { | |
124 | struct execute_args *my_args = data; | |
125 | NOTICE("'%s' started with pid '%d'", my_args->argv[0], handler->pid); | |
126 | return 0; | |
127 | } | |
128 | ||
129 | static struct lxc_operations execute_start_ops = { | |
130 | .start = execute_start, | |
131 | .post_start = execute_post_start | |
132 | }; | |
133 | ||
134 | int lxc_execute(const char *name, char *const argv[], int quiet, | |
aa460476 | 135 | struct lxc_handler *handler, const char *lxcpath, |
a3b4f3d6 | 136 | bool backgrounded, int *error_num) |
0ae4f887 | 137 | { |
aa460476 | 138 | struct execute_args args = {.argv = argv, .quiet = quiet}; |
0ae4f887 | 139 | |
47a46cf1 | 140 | if (lxc_check_inherited(handler->conf, false, &handler->conf->maincmd_fd, 1)) |
0ae4f887 GK |
141 | return -1; |
142 | ||
aa460476 CB |
143 | handler->conf->is_execute = 1; |
144 | return __lxc_start(name, handler, &execute_start_ops, &args, lxcpath, | |
a3b4f3d6 | 145 | backgrounded, error_num); |
0ae4f887 | 146 | } |