Contents of /trunk/mkinitrd-magellan/busybox/modutils/modprobe.c
Parent Directory | Revision Log
Revision 1123 -
(show annotations)
(download)
Wed Aug 18 21:56:57 2010 UTC (14 years, 1 month ago) by niro
File MIME type: text/plain
File size: 18234 byte(s)
Wed Aug 18 21:56:57 2010 UTC (14 years, 1 month ago) by niro
File MIME type: text/plain
File size: 18234 byte(s)
-updated to busybox-1.17.1
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * Modprobe written from scratch for BusyBox |
4 | * |
5 | * Copyright (c) 2008 Timo Teras <timo.teras@iki.fi> |
6 | * Copyright (c) 2008 Vladimir Dronnikov |
7 | * |
8 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. |
9 | */ |
10 | |
11 | /* Note that unlike older versions of modules.dep/depmod (busybox and m-i-t), |
12 | * we expect the full dependency list to be specified in modules.dep. |
13 | * Older versions would only export the direct dependency list. |
14 | */ |
15 | #include "libbb.h" |
16 | #include "modutils.h" |
17 | #include <sys/utsname.h> |
18 | #include <fnmatch.h> |
19 | |
20 | //#define DBG(fmt, ...) bb_error_msg("%s: " fmt, __func__, ## __VA_ARGS__) |
21 | #define DBG(...) ((void)0) |
22 | |
23 | //usage:#if !ENABLE_MODPROBE_SMALL |
24 | //usage:#define modprobe_notes_usage |
25 | //usage: "modprobe can (un)load a stack of modules, passing each module options (when\n" |
26 | //usage: "loading). modprobe uses a configuration file to determine what option(s) to\n" |
27 | //usage: "pass each module it loads.\n" |
28 | //usage: "\n" |
29 | //usage: "The configuration file is searched (in this order):\n" |
30 | //usage: "\n" |
31 | //usage: " /etc/modprobe.conf (2.6 only)\n" |
32 | //usage: " /etc/modules.conf\n" |
33 | //usage: " /etc/conf.modules (deprecated)\n" |
34 | //usage: "\n" |
35 | //usage: "They all have the same syntax (see below). If none is present, it is\n" |
36 | //usage: "_not_ an error; each loaded module is then expected to load without\n" |
37 | //usage: "options. Once a file is found, the others are tested for.\n" |
38 | //usage: "\n" |
39 | //usage: "/etc/modules.conf entry format:\n" |
40 | //usage: "\n" |
41 | //usage: " alias <alias_name> <mod_name>\n" |
42 | //usage: " Makes it possible to modprobe alias_name, when there is no such module.\n" |
43 | //usage: " It makes sense if your mod_name is long, or you want a more representative\n" |
44 | //usage: " name for that module (eg. 'scsi' in place of 'aha7xxx').\n" |
45 | //usage: " This makes it also possible to use a different set of options (below) for\n" |
46 | //usage: " the module and the alias.\n" |
47 | //usage: " A module can be aliased more than once.\n" |
48 | //usage: "\n" |
49 | //usage: " options <mod_name|alias_name> <symbol=value...>\n" |
50 | //usage: " When loading module mod_name (or the module aliased by alias_name), pass\n" |
51 | //usage: " the \"symbol=value\" pairs as option to that module.\n" |
52 | //usage: "\n" |
53 | //usage: "Sample /etc/modules.conf file:\n" |
54 | //usage: "\n" |
55 | //usage: " options tulip irq=3\n" |
56 | //usage: " alias tulip tulip2\n" |
57 | //usage: " options tulip2 irq=4 io=0x308\n" |
58 | //usage: "\n" |
59 | //usage: "Other functionality offered by 'classic' modprobe is not available in\n" |
60 | //usage: "this implementation.\n" |
61 | //usage: "\n" |
62 | //usage: "If module options are present both in the config file, and on the command line,\n" |
63 | //usage: "then the options from the command line will be passed to the module _after_\n" |
64 | //usage: "the options from the config file. That way, you can have defaults in the config\n" |
65 | //usage: "file, and override them for a specific usage from the command line.\n" |
66 | //usage:#define modprobe_example_usage |
67 | //usage: "(with the above /etc/modules.conf):\n\n" |
68 | //usage: "$ modprobe tulip\n" |
69 | //usage: " will load the module 'tulip' with default option 'irq=3'\n\n" |
70 | //usage: "$ modprobe tulip irq=5\n" |
71 | //usage: " will load the module 'tulip' with option 'irq=5', thus overriding the default\n\n" |
72 | //usage: "$ modprobe tulip2\n" |
73 | //usage: " will load the module 'tulip' with default options 'irq=4 io=0x308',\n" |
74 | //usage: " which are the default for alias 'tulip2'\n\n" |
75 | //usage: "$ modprobe tulip2 irq=8\n" |
76 | //usage: " will load the module 'tulip' with default options 'irq=4 io=0x308 irq=8',\n" |
77 | //usage: " which are the default for alias 'tulip2' overridden by the option 'irq=8'\n\n" |
78 | //usage: " from the command line\n\n" |
79 | //usage: "$ modprobe tulip2 irq=2 io=0x210\n" |
80 | //usage: " will load the module 'tulip' with default options 'irq=4 io=0x308 irq=4 io=0x210',\n" |
81 | //usage: " which are the default for alias 'tulip2' overridden by the options 'irq=2 io=0x210'\n\n" |
82 | //usage: " from the command line\n" |
83 | //usage: |
84 | //usage:#define modprobe_trivial_usage |
85 | //usage: "[-alrqvs" |
86 | //usage: IF_FEATURE_MODPROBE_BLACKLIST("b") |
87 | //usage: "] MODULE [symbol=value]..." |
88 | //usage:#define modprobe_full_usage "\n\n" |
89 | //usage: "Options:" |
90 | //usage: "\n -a Load multiple MODULEs" |
91 | //usage: "\n -l List (MODULE is a pattern)" |
92 | //usage: "\n -r Remove MODULE (stacks) or do autoclean" |
93 | //usage: "\n -q Quiet" |
94 | //usage: "\n -v Verbose" |
95 | //usage: "\n -s Log to syslog" |
96 | //usage: IF_FEATURE_MODPROBE_BLACKLIST( |
97 | //usage: "\n -b Apply blacklist to module names too" |
98 | //usage: ) |
99 | //usage:#endif /* !ENABLE_MODPROBE_SMALL */ |
100 | |
101 | /* Note that usage text doesn't document various 2.4 options |
102 | * we pull in through INSMOD_OPTS define */ |
103 | |
104 | #define MODPROBE_COMPLEMENTARY "q-v:v-q:l--ar:a--lr:r--al" |
105 | #define MODPROBE_OPTS "alr" IF_FEATURE_MODPROBE_BLACKLIST("b") |
106 | //#define MODPROBE_COMPLEMENTARY "q-v:v-q:l--acr:a--lr:r--al" |
107 | //#define MODPROBE_OPTS "acd:lnrt:C:" IF_FEATURE_MODPROBE_BLACKLIST("b") |
108 | enum { |
109 | MODPROBE_OPT_INSERT_ALL = (INSMOD_OPT_UNUSED << 0), /* a */ |
110 | //MODPROBE_OPT_DUMP_ONLY= (INSMOD_OPT_UNUSED << x), /* c */ |
111 | //MODPROBE_OPT_DIRNAME = (INSMOD_OPT_UNUSED << x), /* d */ |
112 | MODPROBE_OPT_LIST_ONLY = (INSMOD_OPT_UNUSED << 1), /* l */ |
113 | //MODPROBE_OPT_SHOW_ONLY= (INSMOD_OPT_UNUSED << x), /* n */ |
114 | MODPROBE_OPT_REMOVE = (INSMOD_OPT_UNUSED << 2), /* r */ |
115 | //MODPROBE_OPT_RESTRICT = (INSMOD_OPT_UNUSED << x), /* t */ |
116 | //MODPROBE_OPT_VERONLY = (INSMOD_OPT_UNUSED << x), /* V */ |
117 | //MODPROBE_OPT_CONFIGFILE=(INSMOD_OPT_UNUSED << x), /* C */ |
118 | MODPROBE_OPT_BLACKLIST = (INSMOD_OPT_UNUSED << 3) * ENABLE_FEATURE_MODPROBE_BLACKLIST, |
119 | }; |
120 | |
121 | #define MODULE_FLAG_LOADED 0x0001 |
122 | #define MODULE_FLAG_NEED_DEPS 0x0002 |
123 | /* "was seen in modules.dep": */ |
124 | #define MODULE_FLAG_FOUND_IN_MODDEP 0x0004 |
125 | #define MODULE_FLAG_BLACKLISTED 0x0008 |
126 | |
127 | struct module_entry { /* I'll call it ME. */ |
128 | unsigned flags; |
129 | char *modname; /* stripped of /path/, .ext and s/-/_/g */ |
130 | const char *probed_name; /* verbatim as seen on cmdline */ |
131 | char *options; /* options from config files */ |
132 | llist_t *realnames; /* strings. if this module is an alias, */ |
133 | /* real module name is one of these. */ |
134 | //Can there really be more than one? Example from real kernel? |
135 | llist_t *deps; /* strings. modules we depend on */ |
136 | }; |
137 | |
138 | struct globals { |
139 | llist_t *db; /* MEs of all modules ever seen (caching for speed) */ |
140 | llist_t *probes; /* MEs of module(s) requested on cmdline */ |
141 | char *cmdline_mopts; /* module options from cmdline */ |
142 | int num_unresolved_deps; |
143 | /* bool. "Did we have 'symbol:FOO' requested on cmdline?" */ |
144 | smallint need_symbols; |
145 | } FIX_ALIASING; |
146 | #define G (*(struct globals*)&bb_common_bufsiz1) |
147 | #define INIT_G() do { } while (0) |
148 | |
149 | |
150 | static int read_config(const char *path); |
151 | |
152 | static char *gather_options_str(char *opts, const char *append) |
153 | { |
154 | /* Speed-optimized. We call gather_options_str many times. */ |
155 | if (append) { |
156 | if (opts == NULL) { |
157 | opts = xstrdup(append); |
158 | } else { |
159 | int optlen = strlen(opts); |
160 | opts = xrealloc(opts, optlen + strlen(append) + 2); |
161 | sprintf(opts + optlen, " %s", append); |
162 | } |
163 | } |
164 | return opts; |
165 | } |
166 | |
167 | static struct module_entry *helper_get_module(const char *module, int create) |
168 | { |
169 | char modname[MODULE_NAME_LEN]; |
170 | struct module_entry *e; |
171 | llist_t *l; |
172 | |
173 | filename2modname(module, modname); |
174 | for (l = G.db; l != NULL; l = l->link) { |
175 | e = (struct module_entry *) l->data; |
176 | if (strcmp(e->modname, modname) == 0) |
177 | return e; |
178 | } |
179 | if (!create) |
180 | return NULL; |
181 | |
182 | e = xzalloc(sizeof(*e)); |
183 | e->modname = xstrdup(modname); |
184 | llist_add_to(&G.db, e); |
185 | |
186 | return e; |
187 | } |
188 | static struct module_entry *get_or_add_modentry(const char *module) |
189 | { |
190 | return helper_get_module(module, 1); |
191 | } |
192 | static struct module_entry *get_modentry(const char *module) |
193 | { |
194 | return helper_get_module(module, 0); |
195 | } |
196 | |
197 | static void add_probe(const char *name) |
198 | { |
199 | struct module_entry *m; |
200 | |
201 | m = get_or_add_modentry(name); |
202 | if (!(option_mask32 & MODPROBE_OPT_REMOVE) |
203 | && (m->flags & MODULE_FLAG_LOADED) |
204 | ) { |
205 | DBG("skipping %s, it is already loaded", name); |
206 | return; |
207 | } |
208 | |
209 | DBG("queuing %s", name); |
210 | m->probed_name = name; |
211 | m->flags |= MODULE_FLAG_NEED_DEPS; |
212 | llist_add_to_end(&G.probes, m); |
213 | G.num_unresolved_deps++; |
214 | if (ENABLE_FEATURE_MODUTILS_SYMBOLS |
215 | && strncmp(m->modname, "symbol:", 7) == 0 |
216 | ) { |
217 | G.need_symbols = 1; |
218 | } |
219 | } |
220 | |
221 | static int FAST_FUNC config_file_action(const char *filename, |
222 | struct stat *statbuf UNUSED_PARAM, |
223 | void *userdata UNUSED_PARAM, |
224 | int depth UNUSED_PARAM) |
225 | { |
226 | char *tokens[3]; |
227 | parser_t *p; |
228 | struct module_entry *m; |
229 | int rc = TRUE; |
230 | |
231 | if (bb_basename(filename)[0] == '.') |
232 | goto error; |
233 | |
234 | p = config_open2(filename, fopen_for_read); |
235 | if (p == NULL) { |
236 | rc = FALSE; |
237 | goto error; |
238 | } |
239 | |
240 | while (config_read(p, tokens, 3, 2, "# \t", PARSE_NORMAL)) { |
241 | //Use index_in_strings? |
242 | if (strcmp(tokens[0], "alias") == 0) { |
243 | /* alias <wildcard> <modulename> */ |
244 | llist_t *l; |
245 | char wildcard[MODULE_NAME_LEN]; |
246 | char *rmod; |
247 | |
248 | if (tokens[2] == NULL) |
249 | continue; |
250 | filename2modname(tokens[1], wildcard); |
251 | |
252 | for (l = G.probes; l != NULL; l = l->link) { |
253 | m = (struct module_entry *) l->data; |
254 | if (fnmatch(wildcard, m->modname, 0) != 0) |
255 | continue; |
256 | rmod = filename2modname(tokens[2], NULL); |
257 | llist_add_to(&m->realnames, rmod); |
258 | |
259 | if (m->flags & MODULE_FLAG_NEED_DEPS) { |
260 | m->flags &= ~MODULE_FLAG_NEED_DEPS; |
261 | G.num_unresolved_deps--; |
262 | } |
263 | |
264 | m = get_or_add_modentry(rmod); |
265 | if (!(m->flags & MODULE_FLAG_NEED_DEPS)) { |
266 | m->flags |= MODULE_FLAG_NEED_DEPS; |
267 | G.num_unresolved_deps++; |
268 | } |
269 | } |
270 | } else if (strcmp(tokens[0], "options") == 0) { |
271 | /* options <modulename> <option...> */ |
272 | if (tokens[2] == NULL) |
273 | continue; |
274 | m = get_or_add_modentry(tokens[1]); |
275 | m->options = gather_options_str(m->options, tokens[2]); |
276 | } else if (strcmp(tokens[0], "include") == 0) { |
277 | /* include <filename> */ |
278 | read_config(tokens[1]); |
279 | } else if (ENABLE_FEATURE_MODPROBE_BLACKLIST |
280 | && strcmp(tokens[0], "blacklist") == 0 |
281 | ) { |
282 | /* blacklist <modulename> */ |
283 | get_or_add_modentry(tokens[1])->flags |= MODULE_FLAG_BLACKLISTED; |
284 | } |
285 | } |
286 | config_close(p); |
287 | error: |
288 | return rc; |
289 | } |
290 | |
291 | static int read_config(const char *path) |
292 | { |
293 | return recursive_action(path, ACTION_RECURSE | ACTION_QUIET, |
294 | config_file_action, NULL, NULL, 1); |
295 | } |
296 | |
297 | static const char *humanly_readable_name(struct module_entry *m) |
298 | { |
299 | /* probed_name may be NULL. modname always exists. */ |
300 | return m->probed_name ? m->probed_name : m->modname; |
301 | } |
302 | |
303 | static char *parse_and_add_kcmdline_module_options(char *options, const char *modulename) |
304 | { |
305 | char *kcmdline_buf; |
306 | char *kcmdline; |
307 | char *kptr; |
308 | int len; |
309 | |
310 | kcmdline_buf = xmalloc_open_read_close("/proc/cmdline", NULL); |
311 | if (!kcmdline_buf) |
312 | return options; |
313 | |
314 | kcmdline = kcmdline_buf; |
315 | len = strlen(modulename); |
316 | while ((kptr = strsep(&kcmdline, "\n\t ")) != NULL) { |
317 | if (strncmp(modulename, kptr, len) != 0) |
318 | continue; |
319 | kptr += len; |
320 | if (*kptr != '.') |
321 | continue; |
322 | /* It is "modulename.xxxx" */ |
323 | kptr++; |
324 | if (strchr(kptr, '=') != NULL) { |
325 | /* It is "modulename.opt=[val]" */ |
326 | options = gather_options_str(options, kptr); |
327 | } |
328 | } |
329 | free(kcmdline_buf); |
330 | |
331 | return options; |
332 | } |
333 | |
334 | /* Return: similar to bb_init_module: |
335 | * 0 on success, |
336 | * -errno on open/read error, |
337 | * errno on init_module() error |
338 | */ |
339 | /* NB: INSMOD_OPT_SILENT bit suppresses ONLY non-existent modules, |
340 | * not deleted ones (those are still listed in modules.dep). |
341 | * module-init-tools version 3.4: |
342 | * # modprobe bogus |
343 | * FATAL: Module bogus not found. [exitcode 1] |
344 | * # modprobe -q bogus [silent, exitcode still 1] |
345 | * but: |
346 | * # rm kernel/drivers/net/dummy.ko |
347 | * # modprobe -q dummy |
348 | * FATAL: Could not open '/lib/modules/xxx/kernel/drivers/net/dummy.ko': No such file or directory |
349 | * [exitcode 1] |
350 | */ |
351 | static int do_modprobe(struct module_entry *m) |
352 | { |
353 | struct module_entry *m2 = m2; /* for compiler */ |
354 | char *fn, *options; |
355 | int rc, first; |
356 | llist_t *l; |
357 | |
358 | if (!(m->flags & MODULE_FLAG_FOUND_IN_MODDEP)) { |
359 | if (!(option_mask32 & INSMOD_OPT_SILENT)) |
360 | bb_error_msg("module %s not found in modules.dep", |
361 | humanly_readable_name(m)); |
362 | return -ENOENT; |
363 | } |
364 | DBG("do_modprob'ing %s", m->modname); |
365 | |
366 | if (!(option_mask32 & MODPROBE_OPT_REMOVE)) |
367 | m->deps = llist_rev(m->deps); |
368 | |
369 | for (l = m->deps; l != NULL; l = l->link) |
370 | DBG("dep: %s", l->data); |
371 | |
372 | first = 1; |
373 | rc = 0; |
374 | while (m->deps) { |
375 | rc = 0; |
376 | fn = llist_pop(&m->deps); /* we leak it */ |
377 | m2 = get_or_add_modentry(fn); |
378 | |
379 | if (option_mask32 & MODPROBE_OPT_REMOVE) { |
380 | /* modprobe -r */ |
381 | if (m2->flags & MODULE_FLAG_LOADED) { |
382 | rc = bb_delete_module(m2->modname, O_EXCL); |
383 | if (rc) { |
384 | if (first) { |
385 | bb_error_msg("can't unload module %s: %s", |
386 | humanly_readable_name(m2), |
387 | moderror(rc)); |
388 | break; |
389 | } |
390 | } else { |
391 | m2->flags &= ~MODULE_FLAG_LOADED; |
392 | } |
393 | } |
394 | /* do not error out if *deps* fail to unload */ |
395 | first = 0; |
396 | continue; |
397 | } |
398 | |
399 | if (m2->flags & MODULE_FLAG_LOADED) { |
400 | DBG("%s is already loaded, skipping", fn); |
401 | continue; |
402 | } |
403 | |
404 | options = m2->options; |
405 | m2->options = NULL; |
406 | options = parse_and_add_kcmdline_module_options(options, m2->modname); |
407 | if (m == m2) |
408 | options = gather_options_str(options, G.cmdline_mopts); |
409 | rc = bb_init_module(fn, options); |
410 | DBG("loaded %s '%s', rc:%d", fn, options, rc); |
411 | if (rc == EEXIST) |
412 | rc = 0; |
413 | free(options); |
414 | if (rc) { |
415 | bb_error_msg("can't load module %s (%s): %s", |
416 | humanly_readable_name(m2), |
417 | fn, |
418 | moderror(rc) |
419 | ); |
420 | break; |
421 | } |
422 | m2->flags |= MODULE_FLAG_LOADED; |
423 | } |
424 | |
425 | return rc; |
426 | } |
427 | |
428 | static void load_modules_dep(void) |
429 | { |
430 | struct module_entry *m; |
431 | char *colon, *tokens[2]; |
432 | parser_t *p; |
433 | |
434 | /* Modprobe does not work at all without modules.dep, |
435 | * even if the full module name is given. Returning error here |
436 | * was making us later confuse user with this message: |
437 | * "module /full/path/to/existing/file/module.ko not found". |
438 | * It's better to die immediately, with good message. |
439 | * xfopen_for_read provides that. */ |
440 | p = config_open2(CONFIG_DEFAULT_DEPMOD_FILE, xfopen_for_read); |
441 | |
442 | while (G.num_unresolved_deps |
443 | && config_read(p, tokens, 2, 1, "# \t", PARSE_NORMAL) |
444 | ) { |
445 | colon = last_char_is(tokens[0], ':'); |
446 | if (colon == NULL) |
447 | continue; |
448 | *colon = 0; |
449 | |
450 | m = get_modentry(tokens[0]); |
451 | if (m == NULL) |
452 | continue; |
453 | |
454 | /* Optimization... */ |
455 | if ((m->flags & MODULE_FLAG_LOADED) |
456 | && !(option_mask32 & MODPROBE_OPT_REMOVE) |
457 | ) { |
458 | DBG("skip deps of %s, it's already loaded", tokens[0]); |
459 | continue; |
460 | } |
461 | |
462 | m->flags |= MODULE_FLAG_FOUND_IN_MODDEP; |
463 | if ((m->flags & MODULE_FLAG_NEED_DEPS) && (m->deps == NULL)) { |
464 | G.num_unresolved_deps--; |
465 | llist_add_to(&m->deps, xstrdup(tokens[0])); |
466 | if (tokens[1]) |
467 | string_to_llist(tokens[1], &m->deps, " \t"); |
468 | } else |
469 | DBG("skipping dep line"); |
470 | } |
471 | config_close(p); |
472 | } |
473 | |
474 | int modprobe_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
475 | int modprobe_main(int argc UNUSED_PARAM, char **argv) |
476 | { |
477 | struct utsname uts; |
478 | int rc; |
479 | unsigned opt; |
480 | struct module_entry *me; |
481 | |
482 | opt_complementary = MODPROBE_COMPLEMENTARY; |
483 | opt = getopt32(argv, INSMOD_OPTS MODPROBE_OPTS INSMOD_ARGS); |
484 | argv += optind; |
485 | |
486 | /* Goto modules location */ |
487 | xchdir(CONFIG_DEFAULT_MODULES_DIR); |
488 | uname(&uts); |
489 | xchdir(uts.release); |
490 | |
491 | if (opt & MODPROBE_OPT_LIST_ONLY) { |
492 | char name[MODULE_NAME_LEN]; |
493 | char *colon, *tokens[2]; |
494 | parser_t *p = config_open2(CONFIG_DEFAULT_DEPMOD_FILE, xfopen_for_read); |
495 | |
496 | while (config_read(p, tokens, 2, 1, "# \t", PARSE_NORMAL)) { |
497 | colon = last_char_is(tokens[0], ':'); |
498 | if (!colon) |
499 | continue; |
500 | *colon = '\0'; |
501 | filename2modname(tokens[0], name); |
502 | if (!argv[0]) |
503 | puts(tokens[0]); |
504 | else { |
505 | int i; |
506 | for (i = 0; argv[i]; i++) { |
507 | if (fnmatch(argv[i], name, 0) == 0) { |
508 | puts(tokens[0]); |
509 | } |
510 | } |
511 | } |
512 | } |
513 | return EXIT_SUCCESS; |
514 | } |
515 | |
516 | /* Yes, for some reason -l ignores -s... */ |
517 | if (opt & INSMOD_OPT_SYSLOG) |
518 | logmode = LOGMODE_SYSLOG; |
519 | |
520 | if (!argv[0]) { |
521 | if (opt & MODPROBE_OPT_REMOVE) { |
522 | /* "modprobe -r" (w/o params). |
523 | * "If name is NULL, all unused modules marked |
524 | * autoclean will be removed". |
525 | */ |
526 | if (bb_delete_module(NULL, O_NONBLOCK | O_EXCL) != 0) |
527 | bb_perror_msg_and_die("rmmod"); |
528 | } |
529 | return EXIT_SUCCESS; |
530 | } |
531 | |
532 | /* Retrieve module names of already loaded modules */ |
533 | { |
534 | char *s; |
535 | parser_t *parser = config_open2("/proc/modules", fopen_for_read); |
536 | while (config_read(parser, &s, 1, 1, "# \t", PARSE_NORMAL & ~PARSE_GREEDY)) |
537 | get_or_add_modentry(s)->flags |= MODULE_FLAG_LOADED; |
538 | config_close(parser); |
539 | } |
540 | |
541 | if (opt & (MODPROBE_OPT_INSERT_ALL | MODPROBE_OPT_REMOVE)) { |
542 | /* Each argument is a module name */ |
543 | do { |
544 | DBG("adding module %s", *argv); |
545 | add_probe(*argv++); |
546 | } while (*argv); |
547 | } else { |
548 | /* First argument is module name, rest are parameters */ |
549 | DBG("probing just module %s", *argv); |
550 | add_probe(argv[0]); |
551 | G.cmdline_mopts = parse_cmdline_module_options(argv); |
552 | } |
553 | |
554 | /* Happens if all requested modules are already loaded */ |
555 | if (G.probes == NULL) |
556 | return EXIT_SUCCESS; |
557 | |
558 | read_config("/etc/modprobe.conf"); |
559 | read_config("/etc/modprobe.d"); |
560 | if (ENABLE_FEATURE_MODUTILS_SYMBOLS && G.need_symbols) |
561 | read_config("modules.symbols"); |
562 | load_modules_dep(); |
563 | if (ENABLE_FEATURE_MODUTILS_ALIAS && G.num_unresolved_deps) { |
564 | read_config("modules.alias"); |
565 | load_modules_dep(); |
566 | } |
567 | |
568 | rc = 0; |
569 | while ((me = llist_pop(&G.probes)) != NULL) { |
570 | if (me->realnames == NULL) { |
571 | DBG("probing by module name"); |
572 | /* This is not an alias. Literal names are blacklisted |
573 | * only if '-b' is given. |
574 | */ |
575 | if (!(opt & MODPROBE_OPT_BLACKLIST) |
576 | || !(me->flags & MODULE_FLAG_BLACKLISTED) |
577 | ) { |
578 | rc |= do_modprobe(me); |
579 | } |
580 | continue; |
581 | } |
582 | |
583 | /* Probe all real names for the alias */ |
584 | do { |
585 | char *realname = llist_pop(&me->realnames); |
586 | struct module_entry *m2; |
587 | |
588 | DBG("probing alias %s by realname %s", me->modname, realname); |
589 | m2 = get_or_add_modentry(realname); |
590 | if (!(m2->flags & MODULE_FLAG_BLACKLISTED) |
591 | && (!(m2->flags & MODULE_FLAG_LOADED) |
592 | || (opt & MODPROBE_OPT_REMOVE)) |
593 | ) { |
594 | //TODO: we can pass "me" as 2nd param to do_modprobe, |
595 | //and make do_modprobe emit more meaningful error messages |
596 | //with alias name included, not just module name alias resolves to. |
597 | rc |= do_modprobe(m2); |
598 | } |
599 | free(realname); |
600 | } while (me->realnames != NULL); |
601 | } |
602 | |
603 | return (rc != 0); |
604 | } |