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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 | |
5430f7f2 LP |
9 | under the terms of the GNU Lesser General Public License as published by |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11c3a4ee LP |
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 | |
5430f7f2 | 16 | Lesser General Public License for more details. |
11c3a4ee | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
11c3a4ee LP |
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> | |
728beb28 | 26 | #include <libkmod.h> |
11c3a4ee LP |
27 | |
28 | #include "macro.h" | |
29 | #include "execute.h" | |
30 | ||
31 | #include "kmod-setup.h" | |
32 | ||
cdb454f2 LP |
33 | #pragma GCC diagnostic push |
34 | #pragma GCC diagnostic ignored "-Wformat-nonliteral" | |
b4b87964 LP |
35 | |
36 | static void systemd_kmod_log( | |
37 | void *data, | |
38 | int priority, | |
39 | const char *file, int line, | |
40 | const char *fn, | |
41 | const char *format, | |
42 | va_list args) { | |
43 | ||
10223732 KS |
44 | /* library logging is enabled at debug only */ |
45 | log_metav(LOG_DEBUG, file, line, fn, format, args); | |
728beb28 | 46 | } |
b4b87964 | 47 | |
cdb454f2 | 48 | #pragma GCC diagnostic pop |
728beb28 | 49 | |
11c3a4ee | 50 | int kmod_setup(void) { |
b4b87964 LP |
51 | |
52 | static const char kmod_table[] = | |
53 | /* This one we need to load explicitly, since | |
54 | * auto-loading on use doesn't work before udev | |
55 | * created the ghost device nodes, and we need it | |
56 | * earlier than that. */ | |
57 | "autofs4\0" "/sys/class/misc/autofs\0" | |
58 | ||
59 | /* This one we need to load explicitly, since | |
60 | * auto-loading of IPv6 is not done when we try to | |
61 | * configure ::1 on the loopback device. */ | |
62 | "ipv6\0" "/sys/module/ipv6\0" | |
63 | ||
64 | "unix\0" "/proc/net/unix\0"; | |
65 | ||
728beb28 | 66 | struct kmod_ctx *ctx = NULL; |
b4b87964 LP |
67 | const char *name, *path; |
68 | int r; | |
11c3a4ee | 69 | |
b4b87964 LP |
70 | NULSTR_FOREACH_PAIR(name, path, kmod_table) { |
71 | struct kmod_module *mod; | |
11c3a4ee | 72 | |
b4b87964 | 73 | if (access(path, F_OK) >= 0) |
11c3a4ee LP |
74 | continue; |
75 | ||
be11c12e | 76 | log_debug("Your kernel apparently lacks built-in %s support. Might be a good idea to compile it in. " |
728beb28 | 77 | "We'll now try to work around this by loading the module...", |
b4b87964 | 78 | name); |
11c3a4ee | 79 | |
728beb28 TG |
80 | if (!ctx) { |
81 | ctx = kmod_new(NULL, NULL); | |
b4b87964 LP |
82 | if (!ctx) |
83 | return log_oom(); | |
11c3a4ee | 84 | |
728beb28 | 85 | kmod_set_log_fn(ctx, systemd_kmod_log, NULL); |
728beb28 TG |
86 | kmod_load_resources(ctx); |
87 | } | |
11c3a4ee | 88 | |
b4b87964 LP |
89 | r = kmod_module_new_from_name(ctx, name, &mod); |
90 | if (r < 0) { | |
91 | log_error("Failed to lookup module '%s'", name); | |
728beb28 TG |
92 | continue; |
93 | } | |
11c3a4ee | 94 | |
b4b87964 LP |
95 | r = kmod_module_probe_insert_module(mod, KMOD_PROBE_APPLY_BLACKLIST, NULL, NULL, NULL, NULL); |
96 | if (r == 0) | |
728beb28 | 97 | log_info("Inserted module '%s'", kmod_module_get_name(mod)); |
b4b87964 | 98 | else if (r == KMOD_PROBE_APPLY_BLACKLIST) |
728beb28 TG |
99 | log_info("Module '%s' is blacklisted", kmod_module_get_name(mod)); |
100 | else | |
10223732 | 101 | log_error("Failed to insert module '%s'", kmod_module_get_name(mod)); |
11c3a4ee | 102 | |
728beb28 | 103 | kmod_module_unref(mod); |
11c3a4ee LP |
104 | } |
105 | ||
728beb28 | 106 | if (ctx) |
34a35ece | 107 | kmod_unref(ctx); |
728beb28 TG |
108 | |
109 | return 0; | |
11c3a4ee | 110 | } |