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Commit | Line | Data |
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b2423f1f LP |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2010 Lennart Poettering | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
7 | under the terms of the GNU Lesser General Public License as published by |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
b2423f1f LP |
9 | (at your option) any later version. |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 14 | Lesser General Public License for more details. |
b2423f1f | 15 | |
5430f7f2 | 16 | You should have received a copy of the GNU Lesser General Public License |
b2423f1f LP |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
18 | ***/ | |
19 | ||
b2423f1f | 20 | #include <errno.h> |
3f6fd1ba | 21 | #include <getopt.h> |
07630cea | 22 | #include <libkmod.h> |
3f6fd1ba | 23 | #include <limits.h> |
b2423f1f LP |
24 | #include <string.h> |
25 | #include <sys/stat.h> | |
b2423f1f | 26 | |
3f6fd1ba | 27 | #include "conf-files.h" |
a0f29c76 | 28 | #include "def.h" |
3ffd4af2 | 29 | #include "fd-util.h" |
0d39fa9c | 30 | #include "fileio.h" |
b2423f1f | 31 | #include "log.h" |
4e731273 | 32 | #include "proc-cmdline.h" |
07630cea | 33 | #include "string-util.h" |
b2423f1f | 34 | #include "strv.h" |
3f6fd1ba | 35 | #include "util.h" |
03658d4f LP |
36 | |
37 | static char **arg_proc_cmdline_modules = NULL; | |
b2423f1f | 38 | |
75eb6154 | 39 | static const char conf_file_dirs[] = CONF_PATHS_NULSTR("modules-load.d"); |
fabe5c0e | 40 | |
83684a35 | 41 | static void systemd_kmod_log(void *data, int priority, const char *file, int line, |
f168c273 | 42 | const char *fn, const char *format, va_list args) { |
bcfce235 LP |
43 | |
44 | DISABLE_WARNING_FORMAT_NONLITERAL; | |
79008bdd | 45 | log_internalv(priority, 0, file, line, fn, format, args); |
bcfce235 | 46 | REENABLE_WARNING; |
83684a35 TG |
47 | } |
48 | ||
03658d4f | 49 | static int add_modules(const char *p) { |
fabe5c0e | 50 | _cleanup_strv_free_ char **k = NULL; |
03658d4f LP |
51 | |
52 | k = strv_split(p, ","); | |
0d0f0c50 SL |
53 | if (!k) |
54 | return log_oom(); | |
03658d4f | 55 | |
e287086b | 56 | if (strv_extend_strv(&arg_proc_cmdline_modules, k, true) < 0) |
0d0f0c50 | 57 | return log_oom(); |
03658d4f | 58 | |
03658d4f LP |
59 | return 0; |
60 | } | |
61 | ||
96287a49 | 62 | static int parse_proc_cmdline_item(const char *key, const char *value, void *data) { |
74df0fca | 63 | int r; |
03658d4f | 64 | |
d7f69e16 | 65 | if (streq(key, "modules-load") && value) { |
059cb385 | 66 | r = add_modules(value); |
141a79f4 ZJS |
67 | if (r < 0) |
68 | return r; | |
03658d4f LP |
69 | } |
70 | ||
c007bb1b | 71 | return 0; |
03658d4f LP |
72 | } |
73 | ||
74 | static int load_module(struct kmod_ctx *ctx, const char *m) { | |
27fda47f | 75 | const int probe_flags = KMOD_PROBE_APPLY_BLACKLIST; |
03658d4f LP |
76 | struct kmod_list *itr, *modlist = NULL; |
77 | int r = 0; | |
78 | ||
9f6445e3 | 79 | log_debug("load: %s", m); |
03658d4f LP |
80 | |
81 | r = kmod_module_new_from_lookup(ctx, m, &modlist); | |
f647962d MS |
82 | if (r < 0) |
83 | return log_error_errno(r, "Failed to lookup alias '%s': %m", m); | |
03658d4f | 84 | |
27fda47f MS |
85 | if (!modlist) { |
86 | log_error("Failed to find module '%s'", m); | |
8f9c0b4c | 87 | return -ENOENT; |
27fda47f MS |
88 | } |
89 | ||
03658d4f LP |
90 | kmod_list_foreach(itr, modlist) { |
91 | struct kmod_module *mod; | |
27fda47f | 92 | int state, err; |
03658d4f LP |
93 | |
94 | mod = kmod_module_get_module(itr); | |
27fda47f MS |
95 | state = kmod_module_get_initstate(mod); |
96 | ||
97 | switch (state) { | |
98 | case KMOD_MODULE_BUILTIN: | |
99 | log_info("Module '%s' is builtin", kmod_module_get_name(mod)); | |
100 | break; | |
101 | ||
102 | case KMOD_MODULE_LIVE: | |
b56c267f | 103 | log_debug("Module '%s' is already loaded", kmod_module_get_name(mod)); |
27fda47f MS |
104 | break; |
105 | ||
106 | default: | |
107 | err = kmod_module_probe_insert_module(mod, probe_flags, | |
108 | NULL, NULL, NULL, NULL); | |
109 | ||
110 | if (err == 0) | |
111 | log_info("Inserted module '%s'", kmod_module_get_name(mod)); | |
112 | else if (err == KMOD_PROBE_APPLY_BLACKLIST) | |
113 | log_info("Module '%s' is blacklisted", kmod_module_get_name(mod)); | |
114 | else { | |
c33b3297 | 115 | log_error_errno(err, "Failed to insert '%s': %m", kmod_module_get_name(mod)); |
27fda47f MS |
116 | r = err; |
117 | } | |
03658d4f LP |
118 | } |
119 | ||
120 | kmod_module_unref(mod); | |
121 | } | |
122 | ||
123 | kmod_module_unref_list(modlist); | |
124 | ||
125 | return r; | |
126 | } | |
127 | ||
fabe5c0e LP |
128 | static int apply_file(struct kmod_ctx *ctx, const char *path, bool ignore_enoent) { |
129 | _cleanup_fclose_ FILE *f = NULL; | |
130 | int r; | |
131 | ||
132 | assert(ctx); | |
133 | assert(path); | |
134 | ||
4cf7ea55 | 135 | r = search_and_fopen_nulstr(path, "re", NULL, conf_file_dirs, &f); |
fabe5c0e LP |
136 | if (r < 0) { |
137 | if (ignore_enoent && r == -ENOENT) | |
138 | return 0; | |
139 | ||
8d3d7072 | 140 | return log_error_errno(r, "Failed to open %s, ignoring: %m", path); |
fabe5c0e LP |
141 | } |
142 | ||
9f6445e3 | 143 | log_debug("apply: %s", path); |
fabe5c0e LP |
144 | for (;;) { |
145 | char line[LINE_MAX], *l; | |
146 | int k; | |
147 | ||
148 | if (!fgets(line, sizeof(line), f)) { | |
149 | if (feof(f)) | |
150 | break; | |
151 | ||
e1427b13 | 152 | return log_error_errno(errno, "Failed to read file '%s', ignoring: %m", path); |
fabe5c0e LP |
153 | } |
154 | ||
155 | l = strstrip(line); | |
156 | if (!*l) | |
157 | continue; | |
d3b6d0c2 | 158 | if (strchr(COMMENTS "\n", *l)) |
fabe5c0e LP |
159 | continue; |
160 | ||
161 | k = load_module(ctx, l); | |
162 | if (k < 0 && r == 0) | |
163 | r = k; | |
164 | } | |
165 | ||
166 | return r; | |
167 | } | |
168 | ||
601185b4 | 169 | static void help(void) { |
fabe5c0e LP |
170 | printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n" |
171 | "Loads statically configured kernel modules.\n\n" | |
eb9da376 LP |
172 | " -h --help Show this help\n" |
173 | " --version Show package version\n", | |
fabe5c0e | 174 | program_invocation_short_name); |
fabe5c0e LP |
175 | } |
176 | ||
177 | static int parse_argv(int argc, char *argv[]) { | |
178 | ||
eb9da376 LP |
179 | enum { |
180 | ARG_VERSION = 0x100, | |
181 | }; | |
182 | ||
fabe5c0e LP |
183 | static const struct option options[] = { |
184 | { "help", no_argument, NULL, 'h' }, | |
eb9da376 LP |
185 | { "version", no_argument, NULL, ARG_VERSION }, |
186 | {} | |
fabe5c0e LP |
187 | }; |
188 | ||
189 | int c; | |
190 | ||
191 | assert(argc >= 0); | |
192 | assert(argv); | |
193 | ||
601185b4 | 194 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) |
fabe5c0e LP |
195 | |
196 | switch (c) { | |
197 | ||
198 | case 'h': | |
601185b4 ZJS |
199 | help(); |
200 | return 0; | |
eb9da376 LP |
201 | |
202 | case ARG_VERSION: | |
3f6fd1ba | 203 | return version(); |
fabe5c0e LP |
204 | |
205 | case '?': | |
206 | return -EINVAL; | |
207 | ||
208 | default: | |
eb9da376 | 209 | assert_not_reached("Unhandled option"); |
fabe5c0e | 210 | } |
fabe5c0e LP |
211 | |
212 | return 1; | |
213 | } | |
214 | ||
b2423f1f | 215 | int main(int argc, char *argv[]) { |
fabe5c0e | 216 | int r, k; |
83684a35 | 217 | struct kmod_ctx *ctx; |
b2423f1f | 218 | |
fabe5c0e LP |
219 | r = parse_argv(argc, argv); |
220 | if (r <= 0) | |
221 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; | |
b2423f1f | 222 | |
4cfa2c99 | 223 | log_set_target(LOG_TARGET_AUTO); |
b2423f1f LP |
224 | log_parse_environment(); |
225 | log_open(); | |
226 | ||
4c12626c LP |
227 | umask(0022); |
228 | ||
d7f69e16 | 229 | r = parse_proc_cmdline(parse_proc_cmdline_item, NULL, true); |
b5884878 | 230 | if (r < 0) |
da927ba9 | 231 | log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m"); |
03658d4f | 232 | |
4e2075ce LP |
233 | ctx = kmod_new(NULL, NULL); |
234 | if (!ctx) { | |
83684a35 | 235 | log_error("Failed to allocate memory for kmod."); |
b2423f1f LP |
236 | goto finish; |
237 | } | |
238 | ||
83684a35 | 239 | kmod_load_resources(ctx); |
83684a35 | 240 | kmod_set_log_fn(ctx, systemd_kmod_log, NULL); |
b2423f1f | 241 | |
fabe5c0e | 242 | r = 0; |
03658d4f | 243 | |
fabe5c0e LP |
244 | if (argc > optind) { |
245 | int i; | |
b2423f1f | 246 | |
fabe5c0e LP |
247 | for (i = optind; i < argc; i++) { |
248 | k = apply_file(ctx, argv[i], false); | |
249 | if (k < 0 && r == 0) | |
250 | r = k; | |
b2423f1f LP |
251 | } |
252 | ||
fabe5c0e | 253 | } else { |
4df32778 | 254 | _cleanup_strv_free_ char **files = NULL; |
fabe5c0e | 255 | char **fn, **i; |
b2423f1f | 256 | |
fabe5c0e LP |
257 | STRV_FOREACH(i, arg_proc_cmdline_modules) { |
258 | k = load_module(ctx, *i); | |
b857193b LP |
259 | if (k < 0 && r == 0) |
260 | r = k; | |
b2423f1f LP |
261 | } |
262 | ||
4b462d1a LP |
263 | k = conf_files_list_nulstr(&files, ".conf", NULL, conf_file_dirs); |
264 | if (k < 0) { | |
da927ba9 | 265 | log_error_errno(k, "Failed to enumerate modules-load.d files: %m"); |
4b462d1a LP |
266 | if (r == 0) |
267 | r = k; | |
fabe5c0e | 268 | goto finish; |
b2423f1f LP |
269 | } |
270 | ||
fabe5c0e LP |
271 | STRV_FOREACH(fn, files) { |
272 | k = apply_file(ctx, *fn, true); | |
273 | if (k < 0 && r == 0) | |
274 | r = k; | |
275 | } | |
b2423f1f LP |
276 | } |
277 | ||
b2423f1f | 278 | finish: |
83684a35 | 279 | kmod_unref(ctx); |
03658d4f | 280 | strv_free(arg_proc_cmdline_modules); |
b2423f1f | 281 | |
fabe5c0e | 282 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; |
b2423f1f | 283 | } |