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d6c9574f | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
11c3a4ee LP |
2 | |
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include <sys/wait.h> | |
23 | #include <unistd.h> | |
24 | #include <string.h> | |
25 | #include <errno.h> | |
26 | ||
27 | #include "macro.h" | |
28 | #include "execute.h" | |
29 | ||
30 | #include "kmod-setup.h" | |
31 | ||
32 | static const char * const kmod_table[] = { | |
33 | "autofs4", "/sys/class/misc/autofs", | |
17586c16 LP |
34 | "ipv6", "/sys/module/ipv6", |
35 | "unix", "/proc/net/unix" | |
11c3a4ee LP |
36 | }; |
37 | ||
38 | int kmod_setup(void) { | |
39 | unsigned i, n = 0; | |
40 | const char * cmdline[3 + ELEMENTSOF(kmod_table) + 1]; | |
41 | ExecCommand command; | |
42 | ExecContext context; | |
43 | pid_t pid; | |
8e12a6ae | 44 | int r; |
11c3a4ee LP |
45 | |
46 | for (i = 0; i < ELEMENTSOF(kmod_table); i += 2) { | |
47 | ||
48 | if (access(kmod_table[i+1], F_OK) >= 0) | |
49 | continue; | |
50 | ||
be11c12e LP |
51 | log_debug("Your kernel apparently lacks built-in %s support. Might be a good idea to compile it in. " |
52 | "We'll now try to work around this by calling '/sbin/modprobe %s'...", | |
53 | kmod_table[i], kmod_table[i]); | |
11c3a4ee LP |
54 | |
55 | cmdline[3 + n++] = kmod_table[i]; | |
56 | } | |
57 | ||
58 | if (n <= 0) | |
59 | return 0; | |
60 | ||
61 | cmdline[0] = "/sbin/modprobe"; | |
62 | cmdline[1] = "-qab"; | |
63 | cmdline[2] = "--"; | |
64 | cmdline[3 + n] = NULL; | |
65 | ||
66 | zero(command); | |
67 | zero(context); | |
68 | ||
69 | command.path = (char*) cmdline[0]; | |
70 | command.argv = (char**) cmdline; | |
71 | ||
72 | exec_context_init(&context); | |
ab1f0633 | 73 | r = exec_spawn(&command, NULL, &context, NULL, 0, NULL, false, false, false, false, NULL, NULL, &pid); |
11c3a4ee LP |
74 | exec_context_done(&context); |
75 | ||
97c4a07d LP |
76 | if (r < 0) { |
77 | log_error("Failed to spawn %s: %s", cmdline[0], strerror(-r)); | |
11c3a4ee | 78 | return r; |
11c3a4ee LP |
79 | } |
80 | ||
97c4a07d | 81 | return wait_for_terminate_and_warn(cmdline[0], pid); |
11c3a4ee | 82 | } |