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b2423f1f LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
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 | |
b2423f1f 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. |
b2423f1f | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
b2423f1f LP |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
22 | #include <unistd.h> | |
23 | #include <fcntl.h> | |
24 | #include <errno.h> | |
25 | #include <string.h> | |
26 | #include <sys/stat.h> | |
27 | #include <limits.h> | |
28 | #include <dirent.h> | |
83684a35 | 29 | #include <libkmod.h> |
b2423f1f LP |
30 | |
31 | #include "log.h" | |
32 | #include "util.h" | |
33 | #include "strv.h" | |
2c21044f | 34 | #include "conf-files.h" |
03658d4f LP |
35 | #include "virt.h" |
36 | ||
37 | static char **arg_proc_cmdline_modules = NULL; | |
b2423f1f | 38 | |
cdb454f2 LP |
39 | #pragma GCC diagnostic push |
40 | #pragma GCC diagnostic ignored "-Wformat-nonliteral" | |
83684a35 TG |
41 | static void systemd_kmod_log(void *data, int priority, const char *file, int line, |
42 | const char *fn, const char *format, va_list args) | |
43 | { | |
e62abb62 | 44 | log_metav(priority, file, line, fn, format, args); |
83684a35 | 45 | } |
cdb454f2 | 46 | #pragma GCC diagnostic pop |
83684a35 | 47 | |
03658d4f LP |
48 | static int add_modules(const char *p) { |
49 | char **t, **k; | |
50 | ||
51 | k = strv_split(p, ","); | |
52 | if (!k) { | |
53 | log_error("Out of memory"); | |
54 | return -ENOMEM; | |
55 | } | |
56 | ||
57 | t = strv_merge(arg_proc_cmdline_modules, k); | |
58 | strv_free(k); | |
59 | if (!t) { | |
60 | log_error("Out of memory"); | |
61 | return -ENOMEM; | |
62 | } | |
63 | ||
64 | strv_free(arg_proc_cmdline_modules); | |
65 | arg_proc_cmdline_modules = t; | |
66 | ||
67 | return 0; | |
68 | } | |
69 | ||
70 | static int parse_proc_cmdline(void) { | |
71 | char *line, *w, *state; | |
72 | int r; | |
73 | size_t l; | |
74 | ||
75 | if (detect_container(NULL) > 0) | |
76 | return 0; | |
77 | ||
78 | r = read_one_line_file("/proc/cmdline", &line); | |
79 | if (r < 0) { | |
80 | log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r)); | |
81 | return 0; | |
82 | } | |
83 | ||
84 | FOREACH_WORD_QUOTED(w, l, line, state) { | |
85 | char *word; | |
86 | ||
87 | word = strndup(w, l); | |
88 | if (!word) { | |
89 | r = -ENOMEM; | |
90 | goto finish; | |
91 | } | |
92 | ||
91ac7425 | 93 | if (startswith(word, "modules-load=")) { |
03658d4f | 94 | |
b2fc39a6 | 95 | r = add_modules(word + 13); |
03658d4f LP |
96 | if (r < 0) |
97 | goto finish; | |
98 | ||
91ac7425 | 99 | } else if (startswith(word, "rd.modules-load=")) { |
03658d4f LP |
100 | |
101 | if (in_initrd()) { | |
b2fc39a6 | 102 | r = add_modules(word + 16); |
03658d4f LP |
103 | if (r < 0) |
104 | goto finish; | |
105 | } | |
106 | ||
107 | } | |
108 | ||
109 | free(word); | |
110 | } | |
111 | ||
112 | r = 0; | |
113 | ||
114 | finish: | |
115 | free(line); | |
116 | return r; | |
117 | } | |
118 | ||
119 | static int load_module(struct kmod_ctx *ctx, const char *m) { | |
27fda47f | 120 | const int probe_flags = KMOD_PROBE_APPLY_BLACKLIST; |
03658d4f LP |
121 | struct kmod_list *itr, *modlist = NULL; |
122 | int r = 0; | |
123 | ||
124 | log_debug("load: %s\n", m); | |
125 | ||
126 | r = kmod_module_new_from_lookup(ctx, m, &modlist); | |
127 | if (r < 0) { | |
128 | log_error("Failed to lookup alias '%s': %s", m, strerror(-r)); | |
129 | return r; | |
130 | } | |
131 | ||
27fda47f MS |
132 | if (!modlist) { |
133 | log_error("Failed to find module '%s'", m); | |
8f9c0b4c | 134 | return -ENOENT; |
27fda47f MS |
135 | } |
136 | ||
03658d4f LP |
137 | kmod_list_foreach(itr, modlist) { |
138 | struct kmod_module *mod; | |
27fda47f | 139 | int state, err; |
03658d4f LP |
140 | |
141 | mod = kmod_module_get_module(itr); | |
27fda47f MS |
142 | state = kmod_module_get_initstate(mod); |
143 | ||
144 | switch (state) { | |
145 | case KMOD_MODULE_BUILTIN: | |
146 | log_info("Module '%s' is builtin", kmod_module_get_name(mod)); | |
147 | break; | |
148 | ||
149 | case KMOD_MODULE_LIVE: | |
150 | log_info("Module '%s' is already loaded", kmod_module_get_name(mod)); | |
151 | break; | |
152 | ||
153 | default: | |
154 | err = kmod_module_probe_insert_module(mod, probe_flags, | |
155 | NULL, NULL, NULL, NULL); | |
156 | ||
157 | if (err == 0) | |
158 | log_info("Inserted module '%s'", kmod_module_get_name(mod)); | |
159 | else if (err == KMOD_PROBE_APPLY_BLACKLIST) | |
160 | log_info("Module '%s' is blacklisted", kmod_module_get_name(mod)); | |
161 | else { | |
162 | log_error("Failed to insert '%s': %s", kmod_module_get_name(mod), | |
163 | strerror(-err)); | |
164 | r = err; | |
165 | } | |
03658d4f LP |
166 | } |
167 | ||
168 | kmod_module_unref(mod); | |
169 | } | |
170 | ||
171 | kmod_module_unref_list(modlist); | |
172 | ||
173 | return r; | |
174 | } | |
175 | ||
b2423f1f | 176 | int main(int argc, char *argv[]) { |
03658d4f LP |
177 | int r = EXIT_FAILURE, k; |
178 | char **files, **fn, **i; | |
83684a35 | 179 | struct kmod_ctx *ctx; |
b2423f1f LP |
180 | |
181 | if (argc > 1) { | |
182 | log_error("This program takes no argument."); | |
22f4096c | 183 | return EXIT_FAILURE; |
b2423f1f LP |
184 | } |
185 | ||
4cfa2c99 | 186 | log_set_target(LOG_TARGET_AUTO); |
b2423f1f LP |
187 | log_parse_environment(); |
188 | log_open(); | |
189 | ||
4c12626c LP |
190 | umask(0022); |
191 | ||
03658d4f LP |
192 | if (parse_proc_cmdline() < 0) |
193 | return EXIT_FAILURE; | |
194 | ||
4e2075ce LP |
195 | ctx = kmod_new(NULL, NULL); |
196 | if (!ctx) { | |
83684a35 | 197 | log_error("Failed to allocate memory for kmod."); |
b2423f1f LP |
198 | goto finish; |
199 | } | |
200 | ||
83684a35 | 201 | kmod_load_resources(ctx); |
83684a35 | 202 | kmod_set_log_fn(ctx, systemd_kmod_log, NULL); |
b2423f1f | 203 | |
03658d4f LP |
204 | r = EXIT_SUCCESS; |
205 | ||
206 | STRV_FOREACH(i, arg_proc_cmdline_modules) { | |
207 | k = load_module(ctx, *i); | |
208 | if (k < 0) | |
209 | r = EXIT_FAILURE; | |
210 | } | |
211 | ||
212 | k = conf_files_list(&files, ".conf", | |
44143309 | 213 | "/etc/modules-load.d", |
fc1a2e06 | 214 | "/run/modules-load.d", |
223a3558 | 215 | "/usr/local/lib/modules-load.d", |
44143309 | 216 | "/usr/lib/modules-load.d", |
4e2075ce | 217 | #ifdef HAVE_SPLIT_USR |
223a3558 | 218 | "/lib/modules-load.d", |
4e2075ce | 219 | #endif |
03658d4f LP |
220 | NULL); |
221 | if (k < 0) { | |
222 | log_error("Failed to enumerate modules-load.d files: %s", strerror(-k)); | |
223 | r = EXIT_FAILURE; | |
b2423f1f LP |
224 | goto finish; |
225 | } | |
226 | ||
db1413d7 | 227 | STRV_FOREACH(fn, files) { |
b2423f1f LP |
228 | FILE *f; |
229 | ||
db1413d7 | 230 | f = fopen(*fn, "re"); |
b2423f1f | 231 | if (!f) { |
db1413d7 | 232 | if (errno == ENOENT) |
70ca520f LP |
233 | continue; |
234 | ||
db1413d7 | 235 | log_error("Failed to open %s: %m", *fn); |
22f4096c | 236 | r = EXIT_FAILURE; |
b2423f1f LP |
237 | continue; |
238 | } | |
239 | ||
db1413d7 | 240 | log_debug("apply: %s\n", *fn); |
b2423f1f | 241 | for (;;) { |
83684a35 | 242 | char line[LINE_MAX], *l; |
b2423f1f | 243 | |
4e2075ce | 244 | if (!fgets(line, sizeof(line), f)) |
b2423f1f LP |
245 | break; |
246 | ||
247 | l = strstrip(line); | |
248 | if (*l == '#' || *l == 0) | |
249 | continue; | |
250 | ||
03658d4f LP |
251 | k = load_module(ctx, l); |
252 | if (k < 0) | |
83684a35 | 253 | r = EXIT_FAILURE; |
b2423f1f LP |
254 | } |
255 | ||
256 | if (ferror(f)) { | |
b2423f1f | 257 | log_error("Failed to read from file: %m"); |
83684a35 | 258 | r = EXIT_FAILURE; |
b2423f1f LP |
259 | } |
260 | ||
261 | fclose(f); | |
262 | } | |
263 | ||
b2423f1f | 264 | finish: |
83684a35 TG |
265 | strv_free(files); |
266 | kmod_unref(ctx); | |
03658d4f | 267 | strv_free(arg_proc_cmdline_modules); |
b2423f1f LP |
268 | |
269 | return r; | |
270 | } |