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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//config:config MODPROBE
11//config: bool "modprobe"
12//config: default n
13//config: depends on !MODPROBE_SMALL
14//config: select PLATFORM_LINUX
15//config: help
16//config: Handle the loading of modules, and their dependencies on a high
17//config: level.
18//config:
19//config:config FEATURE_MODPROBE_BLACKLIST
20//config: bool "Blacklist support"
21//config: default n
22//config: depends on MODPROBE
23//config: select PLATFORM_LINUX
24//config: help
25//config: Say 'y' here to enable support for the 'blacklist' command in
26//config: modprobe.conf. This prevents the alias resolver to resolve
27//config: blacklisted modules. This is useful if you want to prevent your
28//config: hardware autodetection scripts to load modules like evdev, frame
29//config: buffer drivers etc.
30
31//applet:IF_MODPROBE(APPLET(modprobe, BB_DIR_SBIN, BB_SUID_DROP))
32
33//kbuild:lib-$(CONFIG_MODPROBE) += modprobe.o modutils.o
34
35#include "libbb.h"
36#include "modutils.h"
37#include <sys/utsname.h>
38#include <fnmatch.h>
39
40#if 1
41#define DBG(...) ((void)0)
42#else
43#define DBG(fmt, ...) bb_error_msg("%s: " fmt, __func__, ## __VA_ARGS__)
44#endif
45
46/* Note that unlike older versions of modules.dep/depmod (busybox and m-i-t),
47 * we expect the full dependency list to be specified in modules.dep.
48 * Older versions would only export the direct dependency list.
49 */
50
51
52//usage:#if !ENABLE_MODPROBE_SMALL
53//usage:#define modprobe_notes_usage
54//usage: "modprobe can (un)load a stack of modules, passing each module options (when\n"
55//usage: "loading). modprobe uses a configuration file to determine what option(s) to\n"
56//usage: "pass each module it loads.\n"
57//usage: "\n"
58//usage: "The configuration file is searched (in this order):\n"
59//usage: "\n"
60//usage: " /etc/modprobe.conf (2.6 only)\n"
61//usage: " /etc/modules.conf\n"
62//usage: " /etc/conf.modules (deprecated)\n"
63//usage: "\n"
64//usage: "They all have the same syntax (see below). If none is present, it is\n"
65//usage: "_not_ an error; each loaded module is then expected to load without\n"
66//usage: "options. Once a file is found, the others are tested for.\n"
67//usage: "\n"
68//usage: "/etc/modules.conf entry format:\n"
69//usage: "\n"
70//usage: " alias <alias_name> <mod_name>\n"
71//usage: " Makes it possible to modprobe alias_name, when there is no such module.\n"
72//usage: " It makes sense if your mod_name is long, or you want a more representative\n"
73//usage: " name for that module (eg. 'scsi' in place of 'aha7xxx').\n"
74//usage: " This makes it also possible to use a different set of options (below) for\n"
75//usage: " the module and the alias.\n"
76//usage: " A module can be aliased more than once.\n"
77//usage: "\n"
78//usage: " options <mod_name|alias_name> <symbol=value...>\n"
79//usage: " When loading module mod_name (or the module aliased by alias_name), pass\n"
80//usage: " the \"symbol=value\" pairs as option to that module.\n"
81//usage: "\n"
82//usage: "Sample /etc/modules.conf file:\n"
83//usage: "\n"
84//usage: " options tulip irq=3\n"
85//usage: " alias tulip tulip2\n"
86//usage: " options tulip2 irq=4 io=0x308\n"
87//usage: "\n"
88//usage: "Other functionality offered by 'classic' modprobe is not available in\n"
89//usage: "this implementation.\n"
90//usage: "\n"
91//usage: "If module options are present both in the config file, and on the command line,\n"
92//usage: "then the options from the command line will be passed to the module _after_\n"
93//usage: "the options from the config file. That way, you can have defaults in the config\n"
94//usage: "file, and override them for a specific usage from the command line.\n"
95//usage:#define modprobe_example_usage
96//usage: "(with the above /etc/modules.conf):\n\n"
97//usage: "$ modprobe tulip\n"
98//usage: " will load the module 'tulip' with default option 'irq=3'\n\n"
99//usage: "$ modprobe tulip irq=5\n"
100//usage: " will load the module 'tulip' with option 'irq=5', thus overriding the default\n\n"
101//usage: "$ modprobe tulip2\n"
102//usage: " will load the module 'tulip' with default options 'irq=4 io=0x308',\n"
103//usage: " which are the default for alias 'tulip2'\n\n"
104//usage: "$ modprobe tulip2 irq=8\n"
105//usage: " will load the module 'tulip' with default options 'irq=4 io=0x308 irq=8',\n"
106//usage: " which are the default for alias 'tulip2' overridden by the option 'irq=8'\n\n"
107//usage: " from the command line\n\n"
108//usage: "$ modprobe tulip2 irq=2 io=0x210\n"
109//usage: " will load the module 'tulip' with default options 'irq=4 io=0x308 irq=4 io=0x210',\n"
110//usage: " which are the default for alias 'tulip2' overridden by the options 'irq=2 io=0x210'\n\n"
111//usage: " from the command line\n"
112//usage:
113//usage:#define modprobe_trivial_usage
114//usage: "[-alrqvsD" IF_FEATURE_MODPROBE_BLACKLIST("b") "]"
115//usage: " MODULE [SYMBOL=VALUE]..."
116//usage:#define modprobe_full_usage "\n\n"
117//usage: " -a Load multiple MODULEs"
118//usage: "\n -l List (MODULE is a pattern)"
119//usage: "\n -r Remove MODULE (stacks) or do autoclean"
120//usage: "\n -q Quiet"
121//usage: "\n -v Verbose"
122//usage: "\n -s Log to syslog"
123//usage: "\n -D Show dependencies"
124//usage: IF_FEATURE_MODPROBE_BLACKLIST(
125//usage: "\n -b Apply blacklist to module names too"
126//usage: )
127//usage:#endif /* !ENABLE_MODPROBE_SMALL */
128
129/* Note: usage text doesn't document various 2.4 options
130 * we pull in through INSMOD_OPTS define
131 * Note2: -b is always accepted, but if !FEATURE_MODPROBE_BLACKLIST,
132 * it is a no-op.
133 */
134#define MODPROBE_OPTS "alrDb"
135/* -a and -D _are_ in fact compatible */
136#define MODPROBE_COMPLEMENTARY ("q-v:v-q:l--arD:r--alD:a--lr:D--rl")
137//#define MODPROBE_OPTS "acd:lnrt:C:b"
138//#define MODPROBE_COMPLEMENTARY "q-v:v-q:l--acr:a--lr:r--al"
139enum {
140 OPT_INSERT_ALL = (INSMOD_OPT_UNUSED << 0), /* a */
141 //OPT_DUMP_ONLY = (INSMOD_OPT_UNUSED << x), /* c */
142 //OPT_DIRNAME = (INSMOD_OPT_UNUSED << x), /* d */
143 OPT_LIST_ONLY = (INSMOD_OPT_UNUSED << 1), /* l */
144 //OPT_SHOW_ONLY = (INSMOD_OPT_UNUSED << x), /* n */
145 OPT_REMOVE = (INSMOD_OPT_UNUSED << 2), /* r */
146 //OPT_RESTRICT = (INSMOD_OPT_UNUSED << x), /* t */
147 //OPT_VERONLY = (INSMOD_OPT_UNUSED << x), /* V */
148 //OPT_CONFIGFILE = (INSMOD_OPT_UNUSED << x), /* C */
149 OPT_SHOW_DEPS = (INSMOD_OPT_UNUSED << 3), /* D */
150 OPT_BLACKLIST = (INSMOD_OPT_UNUSED << 4) * ENABLE_FEATURE_MODPROBE_BLACKLIST,
151};
152#if ENABLE_LONG_OPTS
153static const char modprobe_longopts[] ALIGN1 =
154 /* nobody asked for long opts (yet) */
155 // "all\0" No_argument "a"
156 // "list\0" No_argument "l"
157 // "remove\0" No_argument "r"
158 // "quiet\0" No_argument "q"
159 // "verbose\0" No_argument "v"
160 // "syslog\0" No_argument "s"
161 /* module-init-tools 3.11.1 has only long opt --show-depends
162 * but no short -D, we provide long opt for scripts which
163 * were written for 3.11.1: */
164 "show-depends\0" No_argument "D"
165 // "use-blacklist\0" No_argument "b"
166 ;
167#endif
168
169#define MODULE_FLAG_LOADED 0x0001
170#define MODULE_FLAG_NEED_DEPS 0x0002
171/* "was seen in modules.dep": */
172#define MODULE_FLAG_FOUND_IN_MODDEP 0x0004
173#define MODULE_FLAG_BLACKLISTED 0x0008
174
175struct globals {
176 llist_t *probes; /* MEs of module(s) requested on cmdline */
177 char *cmdline_mopts; /* module options from cmdline */
178 int num_unresolved_deps;
179 /* bool. "Did we have 'symbol:FOO' requested on cmdline?" */
180 smallint need_symbols;
181 struct utsname uts;
182 module_db db;
183} FIX_ALIASING;
184#define G (*ptr_to_globals)
185#define INIT_G() do { \
186 SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
187} while (0)
188
189
190static int read_config(const char *path);
191
192static char *gather_options_str(char *opts, const char *append)
193{
194 /* Speed-optimized. We call gather_options_str many times. */
195 if (append) {
196 if (opts == NULL) {
197 opts = xstrdup(append);
198 } else {
199 int optlen = strlen(opts);
200 opts = xrealloc(opts, optlen + strlen(append) + 2);
201 sprintf(opts + optlen, " %s", append);
202 }
203 }
204 return opts;
205}
206
207static struct module_entry *get_or_add_modentry(const char *module)
208{
209 return moddb_get_or_create(&G.db, module);
210}
211
212static void add_probe(const char *name)
213{
214 struct module_entry *m;
215
216 m = get_or_add_modentry(name);
217 if (!(option_mask32 & (OPT_REMOVE | OPT_SHOW_DEPS))
218 && (m->flags & MODULE_FLAG_LOADED)
219 ) {
220 DBG("skipping %s, it is already loaded", name);
221 return;
222 }
223
224 DBG("queuing %s", name);
225 m->probed_name = name;
226 m->flags |= MODULE_FLAG_NEED_DEPS;
227 llist_add_to_end(&G.probes, m);
228 G.num_unresolved_deps++;
229 if (ENABLE_FEATURE_MODUTILS_SYMBOLS
230 && is_prefixed_with(m->modname, "symbol:")
231 ) {
232 G.need_symbols = 1;
233 }
234}
235
236static int FAST_FUNC config_file_action(const char *filename,
237 struct stat *statbuf UNUSED_PARAM,
238 void *userdata UNUSED_PARAM,
239 int depth)
240{
241 char *tokens[3];
242 parser_t *p;
243 struct module_entry *m;
244 int rc = TRUE;
245 const char *base, *ext;
246
247 /* Skip files that begin with a "." */
248 base = bb_basename(filename);
249 if (base[0] == '.')
250 goto error;
251
252 /* In dir recursion, skip files that do not end with a ".conf"
253 * depth==0: read_config("modules.{symbols,alias}") must work,
254 * "include FILE_NOT_ENDING_IN_CONF" must work too.
255 */
256 if (depth != 0) {
257 ext = strrchr(base, '.');
258 if (ext == NULL || strcmp(ext + 1, "conf"))
259 goto error;
260 }
261
262 p = config_open2(filename, fopen_for_read);
263 if (p == NULL) {
264 rc = FALSE;
265 goto error;
266 }
267
268 while (config_read(p, tokens, 3, 2, "# \t", PARSE_NORMAL)) {
269//Use index_in_strings?
270 if (strcmp(tokens[0], "alias") == 0) {
271 /* alias <wildcard> <modulename> */
272 llist_t *l;
273 char wildcard[MODULE_NAME_LEN];
274 char *rmod;
275
276 if (tokens[2] == NULL)
277 continue;
278 filename2modname(tokens[1], wildcard);
279
280 for (l = G.probes; l; l = l->link) {
281 m = (struct module_entry *) l->data;
282 if (fnmatch(wildcard, m->modname, 0) != 0)
283 continue;
284 rmod = filename2modname(tokens[2], NULL);
285 llist_add_to(&m->realnames, rmod);
286
287 if (m->flags & MODULE_FLAG_NEED_DEPS) {
288 m->flags &= ~MODULE_FLAG_NEED_DEPS;
289 G.num_unresolved_deps--;
290 }
291
292 m = get_or_add_modentry(rmod);
293 if (!(m->flags & MODULE_FLAG_NEED_DEPS)) {
294 m->flags |= MODULE_FLAG_NEED_DEPS;
295 G.num_unresolved_deps++;
296 }
297 }
298 } else if (strcmp(tokens[0], "options") == 0) {
299 /* options <modulename> <option...> */
300 if (tokens[2] == NULL)
301 continue;
302 m = get_or_add_modentry(tokens[1]);
303 m->options = gather_options_str(m->options, tokens[2]);
304 } else if (strcmp(tokens[0], "include") == 0) {
305 /* include <filename>/<dirname> (yes, directories also must work) */
306 read_config(tokens[1]);
307 } else if (ENABLE_FEATURE_MODPROBE_BLACKLIST
308 && strcmp(tokens[0], "blacklist") == 0
309 ) {
310 /* blacklist <modulename> */
311 get_or_add_modentry(tokens[1])->flags |= MODULE_FLAG_BLACKLISTED;
312 }
313 }
314 config_close(p);
315 error:
316 return rc;
317}
318
319static int read_config(const char *path)
320{
321 return recursive_action(path, ACTION_RECURSE | ACTION_QUIET,
322 config_file_action, NULL, NULL,
323 /*depth:*/ 0);
324}
325
326static const char *humanly_readable_name(struct module_entry *m)
327{
328 /* probed_name may be NULL. modname always exists. */
329 return m->probed_name ? m->probed_name : m->modname;
330}
331
332/* Like strsep(&stringp, "\n\t ") but quoted text goes to single token
333 * even if it contains whitespace.
334 */
335static char *strsep_quotes(char **stringp)
336{
337 char *s, *start = *stringp;
338
339 if (!start)
340 return NULL;
341
342 for (s = start; ; s++) {
343 switch (*s) {
344 case '"':
345 s = strchrnul(s + 1, '"'); /* find trailing quote */
346 if (*s != '\0')
347 s++; /* skip trailing quote */
348 /* fall through */
349 case '\0':
350 case '\n':
351 case '\t':
352 case ' ':
353 if (*s != '\0') {
354 *s = '\0';
355 *stringp = s + 1;
356 } else {
357 *stringp = NULL;
358 }
359 return start;
360 }
361 }
362}
363
364static char *parse_and_add_kcmdline_module_options(char *options, const char *modulename)
365{
366 char *kcmdline_buf;
367 char *kcmdline;
368 char *kptr;
369
370 kcmdline_buf = xmalloc_open_read_close("/proc/cmdline", NULL);
371 if (!kcmdline_buf)
372 return options;
373
374 kcmdline = kcmdline_buf;
375 while ((kptr = strsep_quotes(&kcmdline)) != NULL) {
376 char *after_modulename = is_prefixed_with(kptr, modulename);
377 if (!after_modulename || *after_modulename != '.')
378 continue;
379 /* It is "modulename.xxxx" */
380 kptr = after_modulename + 1;
381 if (strchr(kptr, '=') != NULL) {
382 /* It is "modulename.opt=[val]" */
383 options = gather_options_str(options, kptr);
384 }
385 }
386 free(kcmdline_buf);
387
388 return options;
389}
390
391/* Return: similar to bb_init_module:
392 * 0 on success,
393 * -errno on open/read error,
394 * errno on init_module() error
395 */
396/* NB: INSMOD_OPT_SILENT bit suppresses ONLY non-existent modules,
397 * not deleted ones (those are still listed in modules.dep).
398 * module-init-tools version 3.4:
399 * # modprobe bogus
400 * FATAL: Module bogus not found. [exitcode 1]
401 * # modprobe -q bogus [silent, exitcode still 1]
402 * but:
403 * # rm kernel/drivers/net/dummy.ko
404 * # modprobe -q dummy
405 * FATAL: Could not open '/lib/modules/xxx/kernel/drivers/net/dummy.ko': No such file or directory
406 * [exitcode 1]
407 */
408static int do_modprobe(struct module_entry *m)
409{
410 int rc, first;
411
412 if (!(m->flags & MODULE_FLAG_FOUND_IN_MODDEP)) {
413 if (!(option_mask32 & INSMOD_OPT_SILENT))
414 bb_error_msg("module %s not found in modules.dep",
415 humanly_readable_name(m));
416 return -ENOENT;
417 }
418 DBG("do_modprob'ing %s", m->modname);
419
420 if (!(option_mask32 & OPT_REMOVE))
421 m->deps = llist_rev(m->deps);
422
423 if (0) {
424 llist_t *l;
425 for (l = m->deps; l; l = l->link)
426 DBG("dep: %s", l->data);
427 }
428
429 first = 1;
430 rc = 0;
431 while (m->deps) {
432 struct module_entry *m2;
433 char *fn, *options;
434
435 rc = 0;
436 fn = llist_pop(&m->deps); /* we leak it */
437 m2 = get_or_add_modentry(bb_get_last_path_component_nostrip(fn));
438
439 if (option_mask32 & OPT_REMOVE) {
440 /* modprobe -r */
441 if (m2->flags & MODULE_FLAG_LOADED) {
442 rc = bb_delete_module(m2->modname, O_EXCL);
443 if (rc) {
444 if (first) {
445 bb_perror_msg("can't unload module '%s'",
446 humanly_readable_name(m2));
447 break;
448 }
449 } else {
450 m2->flags &= ~MODULE_FLAG_LOADED;
451 }
452 }
453 /* do not error out if *deps* fail to unload */
454 first = 0;
455 continue;
456 }
457
458 options = m2->options;
459 m2->options = NULL;
460 options = parse_and_add_kcmdline_module_options(options, m2->modname);
461 if (m == m2)
462 options = gather_options_str(options, G.cmdline_mopts);
463
464 if (option_mask32 & OPT_SHOW_DEPS) {
465 printf(options ? "insmod %s/%s/%s %s\n"
466 : "insmod %s/%s/%s\n",
467 CONFIG_DEFAULT_MODULES_DIR, G.uts.release, fn,
468 options);
469 free(options);
470 continue;
471 }
472
473 if (m2->flags & MODULE_FLAG_LOADED) {
474 DBG("%s is already loaded, skipping", fn);
475 free(options);
476 continue;
477 }
478
479 rc = bb_init_module(fn, options);
480 DBG("loaded %s '%s', rc:%d", fn, options, rc);
481 if (rc == EEXIST)
482 rc = 0;
483 free(options);
484 if (rc) {
485 bb_error_msg("can't load module %s (%s): %s",
486 humanly_readable_name(m2),
487 fn,
488 moderror(rc)
489 );
490 break;
491 }
492 m2->flags |= MODULE_FLAG_LOADED;
493 }
494
495 return rc;
496}
497
498static void load_modules_dep(void)
499{
500 struct module_entry *m;
501 char *colon, *tokens[2];
502 parser_t *p;
503
504 /* Modprobe does not work at all without modules.dep,
505 * even if the full module name is given. Returning error here
506 * was making us later confuse user with this message:
507 * "module /full/path/to/existing/file/module.ko not found".
508 * It's better to die immediately, with good message.
509 * xfopen_for_read provides that. */
510 p = config_open2(CONFIG_DEFAULT_DEPMOD_FILE, xfopen_for_read);
511
512 while (G.num_unresolved_deps
513 && config_read(p, tokens, 2, 1, "# \t", PARSE_NORMAL)
514 ) {
515 colon = last_char_is(tokens[0], ':');
516 if (colon == NULL)
517 continue;
518 *colon = '\0';
519
520 m = moddb_get(&G.db, bb_get_last_path_component_nostrip(tokens[0]));
521 if (m == NULL)
522 continue;
523
524 /* Optimization... */
525 if ((m->flags & MODULE_FLAG_LOADED)
526 && !(option_mask32 & (OPT_REMOVE | OPT_SHOW_DEPS))
527 ) {
528 DBG("skip deps of %s, it's already loaded", tokens[0]);
529 continue;
530 }
531
532 m->flags |= MODULE_FLAG_FOUND_IN_MODDEP;
533 if ((m->flags & MODULE_FLAG_NEED_DEPS) && (m->deps == NULL)) {
534 G.num_unresolved_deps--;
535 llist_add_to(&m->deps, xstrdup(tokens[0]));
536 if (tokens[1])
537 string_to_llist(tokens[1], &m->deps, " \t");
538 } else
539 DBG("skipping dep line");
540 }
541 config_close(p);
542}
543
544int modprobe_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
545int modprobe_main(int argc UNUSED_PARAM, char **argv)
546{
547 int rc;
548 unsigned opt;
549 struct module_entry *me;
550
551 INIT_G();
552
553 IF_LONG_OPTS(applet_long_options = modprobe_longopts;)
554 opt_complementary = MODPROBE_COMPLEMENTARY;
555 opt = getopt32(argv, INSMOD_OPTS MODPROBE_OPTS INSMOD_ARGS);
556 argv += optind;
557
558 /* Goto modules location */
559 xchdir(CONFIG_DEFAULT_MODULES_DIR);
560 uname(&G.uts);
561 xchdir(G.uts.release);
562
563 if (opt & OPT_LIST_ONLY) {
564 int i;
565 char *colon, *tokens[2];
566 parser_t *p = config_open2(CONFIG_DEFAULT_DEPMOD_FILE, xfopen_for_read);
567
568 for (i = 0; argv[i]; i++)
569 replace(argv[i], '-', '_');
570
571 while (config_read(p, tokens, 2, 1, "# \t", PARSE_NORMAL)) {
572 colon = last_char_is(tokens[0], ':');
573 if (!colon)
574 continue;
575 *colon = '\0';
576 if (!argv[0])
577 puts(tokens[0]);
578 else {
579 char name[MODULE_NAME_LEN];
580 filename2modname(
581 bb_get_last_path_component_nostrip(tokens[0]),
582 name
583 );
584 for (i = 0; argv[i]; i++) {
585 if (fnmatch(argv[i], name, 0) == 0) {
586 puts(tokens[0]);
587 }
588 }
589 }
590 }
591 return EXIT_SUCCESS;
592 }
593
594 /* Yes, for some reason -l ignores -s... */
595 if (opt & INSMOD_OPT_SYSLOG)
596 logmode = LOGMODE_SYSLOG;
597
598 if (!argv[0]) {
599 if (opt & OPT_REMOVE) {
600 /* "modprobe -r" (w/o params).
601 * "If name is NULL, all unused modules marked
602 * autoclean will be removed".
603 */
604 if (bb_delete_module(NULL, O_NONBLOCK | O_EXCL) != 0)
605 bb_perror_nomsg_and_die();
606 }
607 return EXIT_SUCCESS;
608 }
609
610 /* Retrieve module names of already loaded modules */
611 {
612 char *s;
613 parser_t *parser = config_open2("/proc/modules", fopen_for_read);
614 while (config_read(parser, &s, 1, 1, "# \t", PARSE_NORMAL & ~PARSE_GREEDY))
615 get_or_add_modentry(s)->flags |= MODULE_FLAG_LOADED;
616 config_close(parser);
617 }
618
619 if (opt & (OPT_INSERT_ALL | OPT_REMOVE)) {
620 /* Each argument is a module name */
621 do {
622 DBG("adding module %s", *argv);
623 add_probe(*argv++);
624 } while (*argv);
625 } else {
626 /* First argument is module name, rest are parameters */
627 DBG("probing just module %s", *argv);
628 add_probe(argv[0]);
629 G.cmdline_mopts = parse_cmdline_module_options(argv, /*quote_spaces:*/ 1);
630 }
631
632 /* Happens if all requested modules are already loaded */
633 if (G.probes == NULL)
634 return EXIT_SUCCESS;
635
636 read_config("/etc/modprobe.conf");
637 read_config("/etc/modprobe.d");
638 if (ENABLE_FEATURE_MODUTILS_SYMBOLS && G.need_symbols)
639 read_config("modules.symbols");
640 load_modules_dep();
641 if (ENABLE_FEATURE_MODUTILS_ALIAS && G.num_unresolved_deps) {
642 read_config("modules.alias");
643 load_modules_dep();
644 }
645
646 rc = 0;
647 while ((me = llist_pop(&G.probes)) != NULL) {
648 if (me->realnames == NULL) {
649 DBG("probing by module name");
650 /* This is not an alias. Literal names are blacklisted
651 * only if '-b' is given.
652 */
653 if (!(opt & OPT_BLACKLIST)
654 || !(me->flags & MODULE_FLAG_BLACKLISTED)
655 ) {
656 rc |= do_modprobe(me);
657 }
658 continue;
659 }
660
661 /* Probe all real names for the alias */
662 do {
663 char *realname = llist_pop(&me->realnames);
664 struct module_entry *m2;
665
666 DBG("probing alias %s by realname %s", me->modname, realname);
667 m2 = get_or_add_modentry(realname);
668 if (!(m2->flags & MODULE_FLAG_BLACKLISTED)
669 && (!(m2->flags & MODULE_FLAG_LOADED)
670 || (opt & (OPT_REMOVE | OPT_SHOW_DEPS)))
671 ) {
672//TODO: we can pass "me" as 2nd param to do_modprobe,
673//and make do_modprobe emit more meaningful error messages
674//with alias name included, not just module name alias resolves to.
675 rc |= do_modprobe(m2);
676 }
677 free(realname);
678 } while (me->realnames != NULL);
679 }
680
681 if (ENABLE_FEATURE_CLEAN_UP)
682 moddb_free(&G.db);
683
684 return (rc != 0);
685}
686
generated by cgit at 2024-05-14 09:51:44 (GMT)