source: MondoRescue/branches/3.3/mindi-busybox/modutils/modprobe.c@ 3621

Last change on this file since 3621 was 3621, checked in by Bruno Cornec, 7 years ago

New 3?3 banch for incorporation of latest busybox 1.25. Changing minor version to handle potential incompatibilities.
File size: 18.9 KB
Line 
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 source tree.
9 */
10
11//applet:IF_MODPROBE(APPLET(modprobe, BB_DIR_SBIN, BB_SUID_DROP))
12
13#include "libbb.h"
14#include "modutils.h"
15#include <sys/utsname.h>
16#include <fnmatch.h>
17
18#if 1
19#define DBG(...) ((void)0)
20#else
21#define DBG(fmt, ...) bb_error_msg("%s: " fmt, __func__, ## __VA_ARGS__)
22#endif
23
24/* Note that unlike older versions of modules.dep/depmod (busybox and m-i-t),
25 * we expect the full dependency list to be specified in modules.dep.
26 * Older versions would only export the direct dependency list.
27 */
28
29
30//usage:#if !ENABLE_MODPROBE_SMALL
31//usage:#define modprobe_notes_usage
32//usage: "modprobe can (un)load a stack of modules, passing each module options (when\n"
33//usage: "loading). modprobe uses a configuration file to determine what option(s) to\n"
34//usage: "pass each module it loads.\n"
35//usage: "\n"
36//usage: "The configuration file is searched (in this order):\n"
37//usage: "\n"
38//usage: " /etc/modprobe.conf (2.6 only)\n"
39//usage: " /etc/modules.conf\n"
40//usage: " /etc/conf.modules (deprecated)\n"
41//usage: "\n"
42//usage: "They all have the same syntax (see below). If none is present, it is\n"
43//usage: "_not_ an error; each loaded module is then expected to load without\n"
44//usage: "options. Once a file is found, the others are tested for.\n"
45//usage: "\n"
46//usage: "/etc/modules.conf entry format:\n"
47//usage: "\n"
48//usage: " alias <alias_name> <mod_name>\n"
49//usage: " Makes it possible to modprobe alias_name, when there is no such module.\n"
50//usage: " It makes sense if your mod_name is long, or you want a more representative\n"
51//usage: " name for that module (eg. 'scsi' in place of 'aha7xxx').\n"
52//usage: " This makes it also possible to use a different set of options (below) for\n"
53//usage: " the module and the alias.\n"
54//usage: " A module can be aliased more than once.\n"
55//usage: "\n"
56//usage: " options <mod_name|alias_name> <symbol=value...>\n"
57//usage: " When loading module mod_name (or the module aliased by alias_name), pass\n"
58//usage: " the \"symbol=value\" pairs as option to that module.\n"
59//usage: "\n"
60//usage: "Sample /etc/modules.conf file:\n"
61//usage: "\n"
62//usage: " options tulip irq=3\n"
63//usage: " alias tulip tulip2\n"
64//usage: " options tulip2 irq=4 io=0x308\n"
65//usage: "\n"
66//usage: "Other functionality offered by 'classic' modprobe is not available in\n"
67//usage: "this implementation.\n"
68//usage: "\n"
69//usage: "If module options are present both in the config file, and on the command line,\n"
70//usage: "then the options from the command line will be passed to the module _after_\n"
71//usage: "the options from the config file. That way, you can have defaults in the config\n"
72//usage: "file, and override them for a specific usage from the command line.\n"
73//usage:#define modprobe_example_usage
74//usage: "(with the above /etc/modules.conf):\n\n"
75//usage: "$ modprobe tulip\n"
76//usage: " will load the module 'tulip' with default option 'irq=3'\n\n"
77//usage: "$ modprobe tulip irq=5\n"
78//usage: " will load the module 'tulip' with option 'irq=5', thus overriding the default\n\n"
79//usage: "$ modprobe tulip2\n"
80//usage: " will load the module 'tulip' with default options 'irq=4 io=0x308',\n"
81//usage: " which are the default for alias 'tulip2'\n\n"
82//usage: "$ modprobe tulip2 irq=8\n"
83//usage: " will load the module 'tulip' with default options 'irq=4 io=0x308 irq=8',\n"
84//usage: " which are the default for alias 'tulip2' overridden by the option 'irq=8'\n\n"
85//usage: " from the command line\n\n"
86//usage: "$ modprobe tulip2 irq=2 io=0x210\n"
87//usage: " will load the module 'tulip' with default options 'irq=4 io=0x308 irq=4 io=0x210',\n"
88//usage: " which are the default for alias 'tulip2' overridden by the options 'irq=2 io=0x210'\n\n"
89//usage: " from the command line\n"
90//usage:
91//usage:#define modprobe_trivial_usage
92//usage: "[-alrqvsD" IF_FEATURE_MODPROBE_BLACKLIST("b") "]"
93//usage: " MODULE [SYMBOL=VALUE]..."
94//usage:#define modprobe_full_usage "\n\n"
95//usage: " -a Load multiple MODULEs"
96//usage: "\n -l List (MODULE is a pattern)"
97//usage: "\n -r Remove MODULE (stacks) or do autoclean"
98//usage: "\n -q Quiet"
99//usage: "\n -v Verbose"
100//usage: "\n -s Log to syslog"
101//usage: "\n -D Show dependencies"
102//usage: IF_FEATURE_MODPROBE_BLACKLIST(
103//usage: "\n -b Apply blacklist to module names too"
104//usage: )
105//usage:#endif /* !ENABLE_MODPROBE_SMALL */
106
107/* Note: usage text doesn't document various 2.4 options
108 * we pull in through INSMOD_OPTS define
109 * Note2: -b is always accepted, but if !FEATURE_MODPROBE_BLACKLIST,
110 * it is a no-op.
111 */
112#define MODPROBE_OPTS "alrDb"
113/* -a and -D _are_ in fact compatible */
114#define MODPROBE_COMPLEMENTARY ("q-v:v-q:l--arD:r--alD:a--lr:D--rl")
115//#define MODPROBE_OPTS "acd:lnrt:C:b"
116//#define MODPROBE_COMPLEMENTARY "q-v:v-q:l--acr:a--lr:r--al"
117enum {
118 OPT_INSERT_ALL = (INSMOD_OPT_UNUSED << 0), /* a */
119 //OPT_DUMP_ONLY = (INSMOD_OPT_UNUSED << x), /* c */
120 //OPT_DIRNAME = (INSMOD_OPT_UNUSED << x), /* d */
121 OPT_LIST_ONLY = (INSMOD_OPT_UNUSED << 1), /* l */
122 //OPT_SHOW_ONLY = (INSMOD_OPT_UNUSED << x), /* n */
123 OPT_REMOVE = (INSMOD_OPT_UNUSED << 2), /* r */
124 //OPT_RESTRICT = (INSMOD_OPT_UNUSED << x), /* t */
125 //OPT_VERONLY = (INSMOD_OPT_UNUSED << x), /* V */
126 //OPT_CONFIGFILE = (INSMOD_OPT_UNUSED << x), /* C */
127 OPT_SHOW_DEPS = (INSMOD_OPT_UNUSED << 3), /* D */
128 OPT_BLACKLIST = (INSMOD_OPT_UNUSED << 4) * ENABLE_FEATURE_MODPROBE_BLACKLIST,
129};
130#if ENABLE_LONG_OPTS
131static const char modprobe_longopts[] ALIGN1 =
132 /* nobody asked for long opts (yet) */
133 // "all\0" No_argument "a"
134 // "list\0" No_argument "l"
135 // "remove\0" No_argument "r"
136 // "quiet\0" No_argument "q"
137 // "verbose\0" No_argument "v"
138 // "syslog\0" No_argument "s"
139 /* module-init-tools 3.11.1 has only long opt --show-depends
140 * but no short -D, we provide long opt for scripts which
141 * were written for 3.11.1: */
142 "show-depends\0" No_argument "D"
143 // "use-blacklist\0" No_argument "b"
144 ;
145#endif
146
147#define MODULE_FLAG_LOADED 0x0001
148#define MODULE_FLAG_NEED_DEPS 0x0002
149/* "was seen in modules.dep": */
150#define MODULE_FLAG_FOUND_IN_MODDEP 0x0004
151#define MODULE_FLAG_BLACKLISTED 0x0008
152
153struct globals {
154 llist_t *probes; /* MEs of module(s) requested on cmdline */
155 char *cmdline_mopts; /* module options from cmdline */
156 int num_unresolved_deps;
157 /* bool. "Did we have 'symbol:FOO' requested on cmdline?" */
158 smallint need_symbols;
159 struct utsname uts;
160 module_db db;
161} FIX_ALIASING;
162#define G (*ptr_to_globals)
163#define INIT_G() do { \
164 SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
165} while (0)
166
167
168static int read_config(const char *path);
169
170static char *gather_options_str(char *opts, const char *append)
171{
172 /* Speed-optimized. We call gather_options_str many times. */
173 if (append) {
174 if (opts == NULL) {
175 opts = xstrdup(append);
176 } else {
177 int optlen = strlen(opts);
178 opts = xrealloc(opts, optlen + strlen(append) + 2);
179 sprintf(opts + optlen, " %s", append);
180 }
181 }
182 return opts;
183}
184
185static struct module_entry *get_or_add_modentry(const char *module)
186{
187 return moddb_get_or_create(&G.db, module);
188}
189
190static void add_probe(const char *name)
191{
192 struct module_entry *m;
193
194 m = get_or_add_modentry(name);
195 if (!(option_mask32 & (OPT_REMOVE | OPT_SHOW_DEPS))
196 && (m->flags & MODULE_FLAG_LOADED)
197 ) {
198 DBG("skipping %s, it is already loaded", name);
199 return;
200 }
201
202 DBG("queuing %s", name);
203 m->probed_name = name;
204 m->flags |= MODULE_FLAG_NEED_DEPS;
205 llist_add_to_end(&G.probes, m);
206 G.num_unresolved_deps++;
207 if (ENABLE_FEATURE_MODUTILS_SYMBOLS
208 && is_prefixed_with(m->modname, "symbol:")
209 ) {
210 G.need_symbols = 1;
211 }
212}
213
214static int FAST_FUNC config_file_action(const char *filename,
215 struct stat *statbuf UNUSED_PARAM,
216 void *userdata UNUSED_PARAM,
217 int depth)
218{
219 char *tokens[3];
220 parser_t *p;
221 struct module_entry *m;
222 int rc = TRUE;
223 const char *base, *ext;
224
225 /* Skip files that begin with a "." */
226 base = bb_basename(filename);
227 if (base[0] == '.')
228 goto error;
229
230 /* In dir recursion, skip files that do not end with a ".conf"
231 * depth==0: read_config("modules.{symbols,alias}") must work,
232 * "include FILE_NOT_ENDING_IN_CONF" must work too.
233 */
234 if (depth != 0) {
235 ext = strrchr(base, '.');
236 if (ext == NULL || strcmp(ext + 1, "conf"))
237 goto error;
238 }
239
240 p = config_open2(filename, fopen_for_read);
241 if (p == NULL) {
242 rc = FALSE;
243 goto error;
244 }
245
246 while (config_read(p, tokens, 3, 2, "# \t", PARSE_NORMAL)) {
247//Use index_in_strings?
248 if (strcmp(tokens[0], "alias") == 0) {
249 /* alias <wildcard> <modulename> */
250 llist_t *l;
251 char wildcard[MODULE_NAME_LEN];
252 char *rmod;
253
254 if (tokens[2] == NULL)
255 continue;
256 filename2modname(tokens[1], wildcard);
257
258 for (l = G.probes; l; l = l->link) {
259 m = (struct module_entry *) l->data;
260 if (fnmatch(wildcard, m->modname, 0) != 0)
261 continue;
262 rmod = filename2modname(tokens[2], NULL);
263 llist_add_to(&m->realnames, rmod);
264
265 if (m->flags & MODULE_FLAG_NEED_DEPS) {
266 m->flags &= ~MODULE_FLAG_NEED_DEPS;
267 G.num_unresolved_deps--;
268 }
269
270 m = get_or_add_modentry(rmod);
271 if (!(m->flags & MODULE_FLAG_NEED_DEPS)) {
272 m->flags |= MODULE_FLAG_NEED_DEPS;
273 G.num_unresolved_deps++;
274 }
275 }
276 } else if (strcmp(tokens[0], "options") == 0) {
277 /* options <modulename> <option...> */
278 if (tokens[2] == NULL)
279 continue;
280 m = get_or_add_modentry(tokens[1]);
281 m->options = gather_options_str(m->options, tokens[2]);
282 } else if (strcmp(tokens[0], "include") == 0) {
283 /* include <filename>/<dirname> (yes, directories also must work) */
284 read_config(tokens[1]);
285 } else if (ENABLE_FEATURE_MODPROBE_BLACKLIST
286 && strcmp(tokens[0], "blacklist") == 0
287 ) {
288 /* blacklist <modulename> */
289 get_or_add_modentry(tokens[1])->flags |= MODULE_FLAG_BLACKLISTED;
290 }
291 }
292 config_close(p);
293 error:
294 return rc;
295}
296
297static int read_config(const char *path)
298{
299 return recursive_action(path, ACTION_RECURSE | ACTION_QUIET,
300 config_file_action, NULL, NULL,
301 /*depth:*/ 0);
302}
303
304static const char *humanly_readable_name(struct module_entry *m)
305{
306 /* probed_name may be NULL. modname always exists. */
307 return m->probed_name ? m->probed_name : m->modname;
308}
309
310/* Like strsep(&stringp, "\n\t ") but quoted text goes to single token
311 * even if it contains whitespace.
312 */
313static char *strsep_quotes(char **stringp)
314{
315 char *s, *start = *stringp;
316
317 if (!start)
318 return NULL;
319
320 for (s = start; ; s++) {
321 switch (*s) {
322 case '"':
323 s = strchrnul(s + 1, '"'); /* find trailing quote */
324 if (*s != '\0')
325 s++; /* skip trailing quote */
326 /* fall through */
327 case '\0':
328 case '\n':
329 case '\t':
330 case ' ':
331 if (*s != '\0') {
332 *s = '\0';
333 *stringp = s + 1;
334 } else {
335 *stringp = NULL;
336 }
337 return start;
338 }
339 }
340}
341
342static char *parse_and_add_kcmdline_module_options(char *options, const char *modulename)
343{
344 char *kcmdline_buf;
345 char *kcmdline;
346 char *kptr;
347
348 kcmdline_buf = xmalloc_open_read_close("/proc/cmdline", NULL);
349 if (!kcmdline_buf)
350 return options;
351
352 kcmdline = kcmdline_buf;
353 while ((kptr = strsep_quotes(&kcmdline)) != NULL) {
354 char *after_modulename = is_prefixed_with(kptr, modulename);
355 if (!after_modulename || *after_modulename != '.')
356 continue;
357 /* It is "modulename.xxxx" */
358 kptr = after_modulename + 1;
359 if (strchr(kptr, '=') != NULL) {
360 /* It is "modulename.opt=[val]" */
361 options = gather_options_str(options, kptr);
362 }
363 }
364 free(kcmdline_buf);
365
366 return options;
367}
368
369/* Return: similar to bb_init_module:
370 * 0 on success,
371 * -errno on open/read error,
372 * errno on init_module() error
373 */
374/* NB: INSMOD_OPT_SILENT bit suppresses ONLY non-existent modules,
375 * not deleted ones (those are still listed in modules.dep).
376 * module-init-tools version 3.4:
377 * # modprobe bogus
378 * FATAL: Module bogus not found. [exitcode 1]
379 * # modprobe -q bogus [silent, exitcode still 1]
380 * but:
381 * # rm kernel/drivers/net/dummy.ko
382 * # modprobe -q dummy
383 * FATAL: Could not open '/lib/modules/xxx/kernel/drivers/net/dummy.ko': No such file or directory
384 * [exitcode 1]
385 */
386static int do_modprobe(struct module_entry *m)
387{
388 int rc, first;
389
390 if (!(m->flags & MODULE_FLAG_FOUND_IN_MODDEP)) {
391 if (!(option_mask32 & INSMOD_OPT_SILENT))
392 bb_error_msg("module %s not found in modules.dep",
393 humanly_readable_name(m));
394 return -ENOENT;
395 }
396 DBG("do_modprob'ing %s", m->modname);
397
398 if (!(option_mask32 & OPT_REMOVE))
399 m->deps = llist_rev(m->deps);
400
401 if (0) {
402 llist_t *l;
403 for (l = m->deps; l; l = l->link)
404 DBG("dep: %s", l->data);
405 }
406
407 first = 1;
408 rc = 0;
409 while (m->deps) {
410 struct module_entry *m2;
411 char *fn, *options;
412
413 rc = 0;
414 fn = llist_pop(&m->deps); /* we leak it */
415 m2 = get_or_add_modentry(bb_get_last_path_component_nostrip(fn));
416
417 if (option_mask32 & OPT_REMOVE) {
418 /* modprobe -r */
419 if (m2->flags & MODULE_FLAG_LOADED) {
420 rc = bb_delete_module(m2->modname, O_EXCL);
421 if (rc) {
422 if (first) {
423 bb_perror_msg("can't unload module '%s'",
424 humanly_readable_name(m2));
425 break;
426 }
427 } else {
428 m2->flags &= ~MODULE_FLAG_LOADED;
429 }
430 }
431 /* do not error out if *deps* fail to unload */
432 first = 0;
433 continue;
434 }
435
436 options = m2->options;
437 m2->options = NULL;
438 options = parse_and_add_kcmdline_module_options(options, m2->modname);
439 if (m == m2)
440 options = gather_options_str(options, G.cmdline_mopts);
441
442 if (option_mask32 & OPT_SHOW_DEPS) {
443 printf(options ? "insmod %s/%s/%s %s\n"
444 : "insmod %s/%s/%s\n",
445 CONFIG_DEFAULT_MODULES_DIR, G.uts.release, fn,
446 options);
447 free(options);
448 continue;
449 }
450
451 if (m2->flags & MODULE_FLAG_LOADED) {
452 DBG("%s is already loaded, skipping", fn);
453 free(options);
454 continue;
455 }
456
457 rc = bb_init_module(fn, options);
458 DBG("loaded %s '%s', rc:%d", fn, options, rc);
459 if (rc == EEXIST)
460 rc = 0;
461 free(options);
462 if (rc) {
463 bb_error_msg("can't load module %s (%s): %s",
464 humanly_readable_name(m2),
465 fn,
466 moderror(rc)
467 );
468 break;
469 }
470 m2->flags |= MODULE_FLAG_LOADED;
471 }
472
473 return rc;
474}
475
476static void load_modules_dep(void)
477{
478 struct module_entry *m;
479 char *colon, *tokens[2];
480 parser_t *p;
481
482 /* Modprobe does not work at all without modules.dep,
483 * even if the full module name is given. Returning error here
484 * was making us later confuse user with this message:
485 * "module /full/path/to/existing/file/module.ko not found".
486 * It's better to die immediately, with good message.
487 * xfopen_for_read provides that. */
488 p = config_open2(CONFIG_DEFAULT_DEPMOD_FILE, xfopen_for_read);
489
490 while (G.num_unresolved_deps
491 && config_read(p, tokens, 2, 1, "# \t", PARSE_NORMAL)
492 ) {
493 colon = last_char_is(tokens[0], ':');
494 if (colon == NULL)
495 continue;
496 *colon = '\0';
497
498 m = moddb_get(&G.db, bb_get_last_path_component_nostrip(tokens[0]));
499 if (m == NULL)
500 continue;
501
502 /* Optimization... */
503 if ((m->flags & MODULE_FLAG_LOADED)
504 && !(option_mask32 & (OPT_REMOVE | OPT_SHOW_DEPS))
505 ) {
506 DBG("skip deps of %s, it's already loaded", tokens[0]);
507 continue;
508 }
509
510 m->flags |= MODULE_FLAG_FOUND_IN_MODDEP;
511 if ((m->flags & MODULE_FLAG_NEED_DEPS) && (m->deps == NULL)) {
512 G.num_unresolved_deps--;
513 llist_add_to(&m->deps, xstrdup(tokens[0]));
514 if (tokens[1])
515 string_to_llist(tokens[1], &m->deps, " \t");
516 } else
517 DBG("skipping dep line");
518 }
519 config_close(p);
520}
521
522int modprobe_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
523int modprobe_main(int argc UNUSED_PARAM, char **argv)
524{
525 int rc;
526 unsigned opt;
527 struct module_entry *me;
528
529 INIT_G();
530
531 IF_LONG_OPTS(applet_long_options = modprobe_longopts;)
532 opt_complementary = MODPROBE_COMPLEMENTARY;
533 opt = getopt32(argv, INSMOD_OPTS MODPROBE_OPTS INSMOD_ARGS);
534 argv += optind;
535
536 /* Goto modules location */
537 xchdir(CONFIG_DEFAULT_MODULES_DIR);
538 uname(&G.uts);
539 xchdir(G.uts.release);
540
541 if (opt & OPT_LIST_ONLY) {
542 int i;
543 char *colon, *tokens[2];
544 parser_t *p = config_open2(CONFIG_DEFAULT_DEPMOD_FILE, xfopen_for_read);
545
546 for (i = 0; argv[i]; i++)
547 replace(argv[i], '-', '_');
548
549 while (config_read(p, tokens, 2, 1, "# \t", PARSE_NORMAL)) {
550 colon = last_char_is(tokens[0], ':');
551 if (!colon)
552 continue;
553 *colon = '\0';
554 if (!argv[0])
555 puts(tokens[0]);
556 else {
557 char name[MODULE_NAME_LEN];
558 filename2modname(
559 bb_get_last_path_component_nostrip(tokens[0]),
560 name
561 );
562 for (i = 0; argv[i]; i++) {
563 if (fnmatch(argv[i], name, 0) == 0) {
564 puts(tokens[0]);
565 }
566 }
567 }
568 }
569 return EXIT_SUCCESS;
570 }
571
572 /* Yes, for some reason -l ignores -s... */
573 if (opt & INSMOD_OPT_SYSLOG)
574 logmode = LOGMODE_SYSLOG;
575
576 if (!argv[0]) {
577 if (opt & OPT_REMOVE) {
578 /* "modprobe -r" (w/o params).
579 * "If name is NULL, all unused modules marked
580 * autoclean will be removed".
581 */
582 if (bb_delete_module(NULL, O_NONBLOCK | O_EXCL) != 0)
583 bb_perror_nomsg_and_die();
584 }
585 return EXIT_SUCCESS;
586 }
587
588 /* Retrieve module names of already loaded modules */
589 {
590 char *s;
591 parser_t *parser = config_open2("/proc/modules", fopen_for_read);
592 while (config_read(parser, &s, 1, 1, "# \t", PARSE_NORMAL & ~PARSE_GREEDY))
593 get_or_add_modentry(s)->flags |= MODULE_FLAG_LOADED;
594 config_close(parser);
595 }
596
597 if (opt & (OPT_INSERT_ALL | OPT_REMOVE)) {
598 /* Each argument is a module name */
599 do {
600 DBG("adding module %s", *argv);
601 add_probe(*argv++);
602 } while (*argv);
603 } else {
604 /* First argument is module name, rest are parameters */
605 DBG("probing just module %s", *argv);
606 add_probe(argv[0]);
607 G.cmdline_mopts = parse_cmdline_module_options(argv, /*quote_spaces:*/ 1);
608 }
609
610 /* Happens if all requested modules are already loaded */
611 if (G.probes == NULL)
612 return EXIT_SUCCESS;
613
614 read_config("/etc/modprobe.conf");
615 read_config("/etc/modprobe.d");
616 if (ENABLE_FEATURE_MODUTILS_SYMBOLS && G.need_symbols)
617 read_config("modules.symbols");
618 load_modules_dep();
619 if (ENABLE_FEATURE_MODUTILS_ALIAS && G.num_unresolved_deps) {
620 read_config("modules.alias");
621 load_modules_dep();
622 }
623
624 rc = 0;
625 while ((me = llist_pop(&G.probes)) != NULL) {
626 if (me->realnames == NULL) {
627 DBG("probing by module name");
628 /* This is not an alias. Literal names are blacklisted
629 * only if '-b' is given.
630 */
631 if (!(opt & OPT_BLACKLIST)
632 || !(me->flags & MODULE_FLAG_BLACKLISTED)
633 ) {
634 rc |= do_modprobe(me);
635 }
636 continue;
637 }
638
639 /* Probe all real names for the alias */
640 do {
641 char *realname = llist_pop(&me->realnames);
642 struct module_entry *m2;
643
644 DBG("probing alias %s by realname %s", me->modname, realname);
645 m2 = get_or_add_modentry(realname);
646 if (!(m2->flags & MODULE_FLAG_BLACKLISTED)
647 && (!(m2->flags & MODULE_FLAG_LOADED)
648 || (opt & (OPT_REMOVE | OPT_SHOW_DEPS)))
649 ) {
650//TODO: we can pass "me" as 2nd param to do_modprobe,
651//and make do_modprobe emit more meaningful error messages
652//with alias name included, not just module name alias resolves to.
653 rc |= do_modprobe(m2);
654 }
655 free(realname);
656 } while (me->realnames != NULL);
657 }
658
659 if (ENABLE_FEATURE_CLEAN_UP)
660 moddb_free(&G.db);
661
662 return (rc != 0);
663}
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