blob: cf8a3f0fe1e6b9d8d815116dfffb3f1f497f40e7 [file] [log] [blame]
Denis Vlasenko671691c2008-07-04 10:25:44 +00001/* vi: set sw=4 ts=4: */
2/*
3 * simplified modprobe
4 *
5 * Copyright (c) 2008 Vladimir Dronnikov
Bernhard Reutner-Fischer6c4dade2008-09-25 12:13:34 +00006 * Copyright (c) 2008 Bernhard Reutner-Fischer (initial depmod code)
Denis Vlasenko671691c2008-07-04 10:25:44 +00007 *
Denys Vlasenko0ef64bd2010-08-16 20:14:46 +02008 * Licensed under GPLv2, see file LICENSE in this source tree.
Denis Vlasenko671691c2008-07-04 10:25:44 +00009 */
10
Denys Vlasenkob9f2d9f2011-01-18 13:58:01 +010011//applet:IF_MODPROBE_SMALL(APPLET(modprobe, BB_DIR_SBIN, BB_SUID_DROP))
Denys Vlasenko5fd3ddf2014-04-19 15:04:39 +020012//applet:IF_MODPROBE_SMALL(APPLET_ODDNAME(depmod, modprobe, BB_DIR_SBIN, BB_SUID_DROP, depmod))
13//applet:IF_MODPROBE_SMALL(APPLET_ODDNAME(insmod, modprobe, BB_DIR_SBIN, BB_SUID_DROP, insmod))
14//applet:IF_MODPROBE_SMALL(APPLET_ODDNAME(lsmod, modprobe, BB_DIR_SBIN, BB_SUID_DROP, lsmod))
15//applet:IF_MODPROBE_SMALL(APPLET_ODDNAME(rmmod, modprobe, BB_DIR_SBIN, BB_SUID_DROP, rmmod))
Denys Vlasenkoc15613c2010-10-15 11:29:02 +020016
Denis Vlasenko671691c2008-07-04 10:25:44 +000017#include "libbb.h"
Denys Vlasenko043b1e52009-09-06 12:47:55 +020018/* After libbb.h, since it needs sys/types.h on some systems */
Denis Vlasenko671691c2008-07-04 10:25:44 +000019#include <sys/utsname.h> /* uname() */
20#include <fnmatch.h>
21
Denis Vlasenko24a131e2008-07-09 15:30:57 +000022extern int init_module(void *module, unsigned long len, const char *options);
23extern int delete_module(const char *module, unsigned flags);
24extern int query_module(const char *name, int which, void *buf, size_t bufsize, size_t *ret);
Denys Vlasenko07e55552014-04-21 16:59:36 +020025/* linux/include/linux/module.h has limit of 64 chars on module names */
26#undef MODULE_NAME_LEN
27#define MODULE_NAME_LEN 64
Denis Vlasenko24a131e2008-07-09 15:30:57 +000028
29
Denys Vlasenko5b3151c2010-09-25 14:37:06 +020030#if 1
31# define dbg1_error_msg(...) ((void)0)
32# define dbg2_error_msg(...) ((void)0)
33#else
34# define dbg1_error_msg(...) bb_error_msg(__VA_ARGS__)
35# define dbg2_error_msg(...) bb_error_msg(__VA_ARGS__)
36#endif
Denis Vlasenko671691c2008-07-04 10:25:44 +000037
Denis Vlasenko24a131e2008-07-09 15:30:57 +000038#define DEPFILE_BB CONFIG_DEFAULT_DEPMOD_FILE".bb"
Denis Vlasenko671691c2008-07-04 10:25:44 +000039
40enum {
41 OPT_q = (1 << 0), /* be quiet */
42 OPT_r = (1 << 1), /* module removal instead of loading */
43};
44
45typedef struct module_info {
46 char *pathname;
Denis Vlasenko78436992008-07-10 14:14:20 +000047 char *aliases;
48 char *deps;
Denis Vlasenko671691c2008-07-04 10:25:44 +000049} module_info;
50
51/*
52 * GLOBALS
53 */
54struct globals {
55 module_info *modinfo;
56 char *module_load_options;
Denis Vlasenko7f950a92008-07-10 14:14:45 +000057 smallint dep_bb_seen;
Denis Vlasenko0e2c93f2008-07-10 14:16:11 +000058 smallint wrote_dep_bb_ok;
Denys Vlasenko0c6914e2009-09-07 02:38:26 +020059 unsigned module_count;
Denis Vlasenko671691c2008-07-04 10:25:44 +000060 int module_found_idx;
Denys Vlasenko0c6914e2009-09-07 02:38:26 +020061 unsigned stringbuf_idx;
62 unsigned stringbuf_size;
63 char *stringbuf; /* some modules have lots of stuff */
Denis Vlasenko671691c2008-07-04 10:25:44 +000064 /* for example, drivers/media/video/saa7134/saa7134.ko */
Denys Vlasenko0c6914e2009-09-07 02:38:26 +020065 /* therefore having a fixed biggish buffer is not wise */
Denis Vlasenko671691c2008-07-04 10:25:44 +000066};
67#define G (*ptr_to_globals)
68#define modinfo (G.modinfo )
Denis Vlasenko7f950a92008-07-10 14:14:45 +000069#define dep_bb_seen (G.dep_bb_seen )
Denis Vlasenko0e2c93f2008-07-10 14:16:11 +000070#define wrote_dep_bb_ok (G.wrote_dep_bb_ok )
Denis Vlasenko671691c2008-07-04 10:25:44 +000071#define module_count (G.module_count )
72#define module_found_idx (G.module_found_idx )
73#define module_load_options (G.module_load_options)
74#define stringbuf_idx (G.stringbuf_idx )
Denys Vlasenko0c6914e2009-09-07 02:38:26 +020075#define stringbuf_size (G.stringbuf_size )
Denis Vlasenko671691c2008-07-04 10:25:44 +000076#define stringbuf (G.stringbuf )
77#define INIT_G() do { \
78 SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
79} while (0)
80
Denys Vlasenko0c6914e2009-09-07 02:38:26 +020081static void append(const char *s)
82{
83 unsigned len = strlen(s);
84 if (stringbuf_idx + len + 15 > stringbuf_size) {
85 stringbuf_size = stringbuf_idx + len + 127;
86 dbg2_error_msg("grow stringbuf to %u", stringbuf_size);
87 stringbuf = xrealloc(stringbuf, stringbuf_size);
88 }
89 memcpy(stringbuf + stringbuf_idx, s, len);
90 stringbuf_idx += len;
91}
Denis Vlasenko671691c2008-07-04 10:25:44 +000092
93static void appendc(char c)
94{
Denys Vlasenko0c6914e2009-09-07 02:38:26 +020095 /* We appendc() only after append(), + 15 trick in append()
96 * makes it unnecessary to check for overflow here */
97 stringbuf[stringbuf_idx++] = c;
Denis Vlasenko671691c2008-07-04 10:25:44 +000098}
99
Denis Vlasenko24a131e2008-07-09 15:30:57 +0000100static void bksp(void)
101{
102 if (stringbuf_idx)
103 stringbuf_idx--;
104}
105
Denis Vlasenko671691c2008-07-04 10:25:44 +0000106static void reset_stringbuf(void)
107{
108 stringbuf_idx = 0;
109}
110
111static char* copy_stringbuf(void)
112{
Denys Vlasenko0c6914e2009-09-07 02:38:26 +0200113 char *copy = xzalloc(stringbuf_idx + 1); /* terminating NUL */
Denis Vlasenko671691c2008-07-04 10:25:44 +0000114 return memcpy(copy, stringbuf, stringbuf_idx);
115}
116
117static char* find_keyword(char *ptr, size_t len, const char *word)
118{
119 int wlen;
120
Denis Vlasenkoe9ad84d2008-08-05 13:10:34 +0000121 if (!ptr) /* happens if xmalloc_open_zipped_read_close cannot read it */
Denis Vlasenko671691c2008-07-04 10:25:44 +0000122 return NULL;
123
124 wlen = strlen(word);
125 len -= wlen - 1;
126 while ((ssize_t)len > 0) {
127 char *old = ptr;
128 /* search for the first char in word */
129 ptr = memchr(ptr, *word, len);
130 if (ptr == NULL) /* no occurance left, done */
131 break;
132 if (strncmp(ptr, word, wlen) == 0)
133 return ptr + wlen; /* found, return ptr past it */
134 ++ptr;
135 len -= (ptr - old);
136 }
137 return NULL;
138}
139
140static void replace(char *s, char what, char with)
141{
142 while (*s) {
143 if (what == *s)
144 *s = with;
145 ++s;
146 }
147}
148
Denys Vlasenko07e55552014-04-21 16:59:36 +0200149static char *filename2modname(const char *filename, char *modname)
150{
151 int i;
Denys Vlasenko78854522015-01-01 19:02:40 +0100152 const char *from;
Denys Vlasenko07e55552014-04-21 16:59:36 +0200153
Denys Vlasenko78854522015-01-01 19:02:40 +0100154 // Disabled since otherwise "modprobe dir/name" would work
155 // as if it is "modprobe name". It is unclear why
156 // 'basenamization' was here in the first place.
157 //from = bb_get_last_path_component_nostrip(filename);
158 from = filename;
Denys Vlasenko07e55552014-04-21 16:59:36 +0200159 for (i = 0; i < (MODULE_NAME_LEN-1) && from[i] != '\0' && from[i] != '.'; i++)
160 modname[i] = (from[i] == '-') ? '_' : from[i];
161 modname[i] = '\0';
162
163 return modname;
164}
165
Denis Vlasenko24a131e2008-07-09 15:30:57 +0000166/* Take "word word", return malloced "word",NUL,"word",NUL,NUL */
167static char* str_2_list(const char *str)
168{
169 int len = strlen(str) + 1;
170 char *dst = xmalloc(len + 1);
171
172 dst[len] = '\0';
173 memcpy(dst, str, len);
174//TODO: protect against 2+ spaces: "word word"
175 replace(dst, ' ', '\0');
176 return dst;
177}
178
Denis Vlasenko671691c2008-07-04 10:25:44 +0000179/* We use error numbers in a loose translation... */
180static const char *moderror(int err)
181{
182 switch (err) {
183 case ENOEXEC:
184 return "invalid module format";
185 case ENOENT:
186 return "unknown symbol in module or invalid parameter";
187 case ESRCH:
188 return "module has wrong symbol version";
189 case EINVAL: /* "invalid parameter" */
190 return "unknown symbol in module or invalid parameter"
191 + sizeof("unknown symbol in module or");
192 default:
193 return strerror(err);
194 }
195}
196
197static int load_module(const char *fname, const char *options)
198{
199#if 1
200 int r;
201 size_t len = MAXINT(ssize_t);
202 char *module_image;
203 dbg1_error_msg("load_module('%s','%s')", fname, options);
204
Denis Vlasenkoe9ad84d2008-08-05 13:10:34 +0000205 module_image = xmalloc_open_zipped_read_close(fname, &len);
Denis Vlasenko671691c2008-07-04 10:25:44 +0000206 r = (!module_image || init_module(module_image, len, options ? options : "") != 0);
207 free(module_image);
208 dbg1_error_msg("load_module:%d", r);
209 return r; /* 0 = success */
210#else
211 /* For testing */
212 dbg1_error_msg("load_module('%s','%s')", fname, options);
213 return 1;
214#endif
215}
216
Denis Vlasenko78436992008-07-10 14:14:20 +0000217static void parse_module(module_info *info, const char *pathname)
Denis Vlasenko671691c2008-07-04 10:25:44 +0000218{
219 char *module_image;
220 char *ptr;
221 size_t len;
222 size_t pos;
Denis Vlasenko24a131e2008-07-09 15:30:57 +0000223 dbg1_error_msg("parse_module('%s')", pathname);
Denis Vlasenko671691c2008-07-04 10:25:44 +0000224
225 /* Read (possibly compressed) module */
226 len = 64 * 1024 * 1024; /* 64 Mb at most */
Denis Vlasenkoe9ad84d2008-08-05 13:10:34 +0000227 module_image = xmalloc_open_zipped_read_close(pathname, &len);
Denys Vlasenko094cc512011-01-17 14:58:27 +0100228 /* module_image == NULL is ok here, find_keyword handles it */
Denis Vlasenko78436992008-07-10 14:14:20 +0000229//TODO: optimize redundant module body reads
Denis Vlasenko671691c2008-07-04 10:25:44 +0000230
Denis Vlasenko78436992008-07-10 14:14:20 +0000231 /* "alias1 symbol:sym1 alias2 symbol:sym2" */
Denis Vlasenko671691c2008-07-04 10:25:44 +0000232 reset_stringbuf();
Denis Vlasenko671691c2008-07-04 10:25:44 +0000233 pos = 0;
234 while (1) {
Denys Vlasenko6116cb22014-04-19 16:17:27 +0200235 unsigned start = stringbuf_idx;
Denis Vlasenko671691c2008-07-04 10:25:44 +0000236 ptr = find_keyword(module_image + pos, len - pos, "alias=");
237 if (!ptr) {
238 ptr = find_keyword(module_image + pos, len - pos, "__ksymtab_");
239 if (!ptr)
240 break;
241 /* DOCME: __ksymtab_gpl and __ksymtab_strings occur
242 * in many modules. What do they mean? */
Denis Vlasenko0e2c93f2008-07-10 14:16:11 +0000243 if (strcmp(ptr, "gpl") == 0 || strcmp(ptr, "strings") == 0)
244 goto skip;
245 dbg2_error_msg("alias:'symbol:%s'", ptr);
246 append("symbol:");
Denis Vlasenko671691c2008-07-04 10:25:44 +0000247 } else {
Denis Vlasenko24a131e2008-07-09 15:30:57 +0000248 dbg2_error_msg("alias:'%s'", ptr);
Denis Vlasenko671691c2008-07-04 10:25:44 +0000249 }
250 append(ptr);
251 appendc(' ');
Denys Vlasenko6116cb22014-04-19 16:17:27 +0200252 /*
253 * Don't add redundant aliases, such as:
254 * libcrc32c.ko symbol:crc32c symbol:crc32c
255 */
256 if (start) { /* "if we aren't the first alias" */
257 char *found, *last;
258 stringbuf[stringbuf_idx] = '\0';
259 last = stringbuf + start;
260 /*
261 * String at last-1 is " symbol:crc32c "
262 * (with both leading and trailing spaces).
263 */
264 if (strncmp(stringbuf, last, stringbuf_idx - start) == 0)
265 /* First alias matches us */
266 found = stringbuf;
267 else
268 /* Does any other alias match? */
269 found = strstr(stringbuf, last-1);
270 if (found < last-1) {
271 /* There is absolutely the same string before us */
272 dbg2_error_msg("redundant:'%s'", last);
273 stringbuf_idx = start;
274 goto skip;
275 }
276 }
Denis Vlasenko0e2c93f2008-07-10 14:16:11 +0000277 skip:
Denis Vlasenko671691c2008-07-04 10:25:44 +0000278 pos = (ptr - module_image);
279 }
Denis Vlasenko24a131e2008-07-09 15:30:57 +0000280 bksp(); /* remove last ' ' */
Denis Vlasenko78436992008-07-10 14:14:20 +0000281 info->aliases = copy_stringbuf();
Denys Vlasenkof9c814b2009-09-07 02:37:19 +0200282 replace(info->aliases, '-', '_');
Denis Vlasenko671691c2008-07-04 10:25:44 +0000283
Denis Vlasenko78436992008-07-10 14:14:20 +0000284 /* "dependency1 depandency2" */
285 reset_stringbuf();
Denis Vlasenko671691c2008-07-04 10:25:44 +0000286 ptr = find_keyword(module_image, len, "depends=");
287 if (ptr && *ptr) {
288 replace(ptr, ',', ' ');
289 replace(ptr, '-', '_');
290 dbg2_error_msg("dep:'%s'", ptr);
291 append(ptr);
292 }
Denis Vlasenko78436992008-07-10 14:14:20 +0000293 info->deps = copy_stringbuf();
Denis Vlasenko671691c2008-07-04 10:25:44 +0000294
295 free(module_image);
Denis Vlasenko671691c2008-07-04 10:25:44 +0000296}
297
Denis Vlasenko24a131e2008-07-09 15:30:57 +0000298static int pathname_matches_modname(const char *pathname, const char *modname)
Denis Vlasenko671691c2008-07-04 10:25:44 +0000299{
Denys Vlasenko07e55552014-04-21 16:59:36 +0200300 int r;
301 char name[MODULE_NAME_LEN];
Denis Vlasenko671691c2008-07-04 10:25:44 +0000302 const char *fname = bb_get_last_path_component_nostrip(pathname);
303 const char *suffix = strrstr(fname, ".ko");
Denys Vlasenkofd0640e2014-05-26 15:01:13 +0200304 safe_strncpy(name, fname, suffix - fname + 1);
Denis Vlasenko671691c2008-07-04 10:25:44 +0000305 replace(name, '-', '_');
Denis Vlasenko24a131e2008-07-09 15:30:57 +0000306 r = (strcmp(name, modname) == 0);
Denis Vlasenko24a131e2008-07-09 15:30:57 +0000307 return r;
Denis Vlasenko671691c2008-07-04 10:25:44 +0000308}
309
310static FAST_FUNC int fileAction(const char *pathname,
Denis Vlasenkoa60f84e2008-07-05 09:18:54 +0000311 struct stat *sb UNUSED_PARAM,
Denis Vlasenko24a131e2008-07-09 15:30:57 +0000312 void *modname_to_match,
Denis Vlasenkoa60f84e2008-07-05 09:18:54 +0000313 int depth UNUSED_PARAM)
Denis Vlasenko671691c2008-07-04 10:25:44 +0000314{
315 int cur;
Denis Vlasenko671691c2008-07-04 10:25:44 +0000316 const char *fname;
317
318 pathname += 2; /* skip "./" */
319 fname = bb_get_last_path_component_nostrip(pathname);
320 if (!strrstr(fname, ".ko")) {
321 dbg1_error_msg("'%s' is not a module", pathname);
322 return TRUE; /* not a module, continue search */
323 }
324
325 cur = module_count++;
Denis Vlasenkodeeed592008-07-08 05:14:36 +0000326 modinfo = xrealloc_vector(modinfo, 12, cur);
Denis Vlasenko671691c2008-07-04 10:25:44 +0000327 modinfo[cur].pathname = xstrdup(pathname);
Denis Vlasenko27842282008-08-04 13:20:36 +0000328 /*modinfo[cur].aliases = NULL; - xrealloc_vector did it */
329 /*modinfo[cur+1].pathname = NULL;*/
Denis Vlasenko671691c2008-07-04 10:25:44 +0000330
Denis Vlasenko24a131e2008-07-09 15:30:57 +0000331 if (!pathname_matches_modname(fname, modname_to_match)) {
Denis Vlasenko671691c2008-07-04 10:25:44 +0000332 dbg1_error_msg("'%s' module name doesn't match", pathname);
333 return TRUE; /* module name doesn't match, continue search */
334 }
335
336 dbg1_error_msg("'%s' module name matches", pathname);
337 module_found_idx = cur;
Denis Vlasenko78436992008-07-10 14:14:20 +0000338 parse_module(&modinfo[cur], pathname);
Denis Vlasenko671691c2008-07-04 10:25:44 +0000339
340 if (!(option_mask32 & OPT_r)) {
341 if (load_module(pathname, module_load_options) == 0) {
342 /* Load was successful, there is nothing else to do.
343 * This can happen ONLY for "top-level" module load,
344 * not a dep, because deps dont do dirscan. */
345 exit(EXIT_SUCCESS);
Denis Vlasenko671691c2008-07-04 10:25:44 +0000346 }
347 }
348
Denis Vlasenko671691c2008-07-04 10:25:44 +0000349 return TRUE;
350}
351
Denis Vlasenko7f950a92008-07-10 14:14:45 +0000352static int load_dep_bb(void)
Denis Vlasenko78436992008-07-10 14:14:20 +0000353{
354 char *line;
Denis Vlasenko5415c852008-07-21 23:05:26 +0000355 FILE *fp = fopen_for_read(DEPFILE_BB);
Denis Vlasenko78436992008-07-10 14:14:20 +0000356
357 if (!fp)
Denis Vlasenko7f950a92008-07-10 14:14:45 +0000358 return 0;
359
360 dep_bb_seen = 1;
361 dbg1_error_msg("loading "DEPFILE_BB);
362
363 /* Why? There is a rare scenario: we did not find modprobe.dep.bb,
364 * we scanned the dir and found no module by name, then we search
365 * for alias (full scan), and we decided to generate modprobe.dep.bb.
366 * But we see modprobe.dep.bb.new! Other modprobe is at work!
367 * We wait and other modprobe renames it to modprobe.dep.bb.
368 * Now we can use it.
369 * But we already have modinfo[] filled, and "module_count = 0"
370 * makes us start anew. Yes, we leak modinfo[].xxx pointers -
371 * there is not much of data there anyway. */
372 module_count = 0;
373 memset(&modinfo[0], 0, sizeof(modinfo[0]));
Denis Vlasenko78436992008-07-10 14:14:20 +0000374
375 while ((line = xmalloc_fgetline(fp)) != NULL) {
376 char* space;
Denys Vlasenko90a99042009-09-06 02:36:23 +0200377 char* linebuf;
Denis Vlasenko78436992008-07-10 14:14:20 +0000378 int cur;
379
380 if (!line[0]) {
381 free(line);
382 continue;
383 }
384 space = strchrnul(line, ' ');
385 cur = module_count++;
386 modinfo = xrealloc_vector(modinfo, 12, cur);
Denis Vlasenko27842282008-08-04 13:20:36 +0000387 /*modinfo[cur+1].pathname = NULL; - xrealloc_vector did it */
Denis Vlasenko78436992008-07-10 14:14:20 +0000388 modinfo[cur].pathname = line; /* we take ownership of malloced block here */
389 if (*space)
390 *space++ = '\0';
391 modinfo[cur].aliases = space;
Denys Vlasenko90a99042009-09-06 02:36:23 +0200392 linebuf = xmalloc_fgetline(fp);
393 modinfo[cur].deps = linebuf ? linebuf : xzalloc(1);
Denis Vlasenko78436992008-07-10 14:14:20 +0000394 if (modinfo[cur].deps[0]) {
395 /* deps are not "", so next line must be empty */
396 line = xmalloc_fgetline(fp);
397 /* Refuse to work with damaged config file */
398 if (line && line[0])
399 bb_error_msg_and_die("error in %s at '%s'", DEPFILE_BB, line);
400 free(line);
401 }
402 }
Denis Vlasenko7f950a92008-07-10 14:14:45 +0000403 return 1;
404}
405
406static int start_dep_bb_writeout(void)
407{
408 int fd;
409
Denis Vlasenko0e2c93f2008-07-10 14:16:11 +0000410 /* depmod -n: write result to stdout */
411 if (applet_name[0] == 'd' && (option_mask32 & 1))
412 return STDOUT_FILENO;
413
Denis Vlasenko7f950a92008-07-10 14:14:45 +0000414 fd = open(DEPFILE_BB".new", O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0644);
415 if (fd < 0) {
416 if (errno == EEXIST) {
417 int count = 5 * 20;
418 dbg1_error_msg(DEPFILE_BB".new exists, waiting for "DEPFILE_BB);
419 while (1) {
420 usleep(1000*1000 / 20);
421 if (load_dep_bb()) {
422 dbg1_error_msg(DEPFILE_BB" appeared");
423 return -2; /* magic number */
424 }
425 if (!--count)
426 break;
427 }
428 bb_error_msg("deleting stale %s", DEPFILE_BB".new");
429 fd = open_or_warn(DEPFILE_BB".new", O_WRONLY | O_CREAT | O_TRUNC);
430 }
431 }
432 dbg1_error_msg("opened "DEPFILE_BB".new:%d", fd);
433 return fd;
434}
435
436static void write_out_dep_bb(int fd)
437{
438 int i;
439 FILE *fp;
440
441 /* We want good error reporting. fdprintf is not good enough. */
Denys Vlasenkoa7ccdee2009-11-15 23:28:11 +0100442 fp = xfdopen_for_write(fd);
Denis Vlasenko7f950a92008-07-10 14:14:45 +0000443 i = 0;
444 while (modinfo[i].pathname) {
445 fprintf(fp, "%s%s%s\n" "%s%s\n",
446 modinfo[i].pathname, modinfo[i].aliases[0] ? " " : "", modinfo[i].aliases,
447 modinfo[i].deps, modinfo[i].deps[0] ? "\n" : "");
448 i++;
449 }
450 /* Badly formatted depfile is a no-no. Be paranoid. */
451 errno = 0;
Denis Vlasenko0e2c93f2008-07-10 14:16:11 +0000452 if (ferror(fp) | fclose(fp)) /* | instead of || is intended */
Denis Vlasenko7f950a92008-07-10 14:14:45 +0000453 goto err;
Denis Vlasenko0e2c93f2008-07-10 14:16:11 +0000454
455 if (fd == STDOUT_FILENO) /* it was depmod -n */
456 goto ok;
457
Denis Vlasenko7f950a92008-07-10 14:14:45 +0000458 if (rename(DEPFILE_BB".new", DEPFILE_BB) != 0) {
459 err:
Denys Vlasenko651a2692010-03-23 16:25:17 +0100460 bb_perror_msg("can't create '%s'", DEPFILE_BB);
Denis Vlasenko7f950a92008-07-10 14:14:45 +0000461 unlink(DEPFILE_BB".new");
462 } else {
Denis Vlasenko0e2c93f2008-07-10 14:16:11 +0000463 ok:
464 wrote_dep_bb_ok = 1;
Denis Vlasenko7f950a92008-07-10 14:14:45 +0000465 dbg1_error_msg("created "DEPFILE_BB);
466 }
Denis Vlasenko78436992008-07-10 14:14:20 +0000467}
468
Denys Vlasenko07e55552014-04-21 16:59:36 +0200469static module_info** find_alias(const char *alias)
Denis Vlasenko671691c2008-07-04 10:25:44 +0000470{
471 int i;
Denis Vlasenko7f950a92008-07-10 14:14:45 +0000472 int dep_bb_fd;
Denys Vlasenko07e55552014-04-21 16:59:36 +0200473 int infoidx;
474 module_info **infovec;
Denis Vlasenko671691c2008-07-04 10:25:44 +0000475 dbg1_error_msg("find_alias('%s')", alias);
476
Denis Vlasenko7f950a92008-07-10 14:14:45 +0000477 try_again:
Denis Vlasenko671691c2008-07-04 10:25:44 +0000478 /* First try to find by name (cheaper) */
479 i = 0;
480 while (modinfo[i].pathname) {
Denis Vlasenko24a131e2008-07-09 15:30:57 +0000481 if (pathname_matches_modname(modinfo[i].pathname, alias)) {
Denis Vlasenko671691c2008-07-04 10:25:44 +0000482 dbg1_error_msg("found '%s' in module '%s'",
483 alias, modinfo[i].pathname);
Denis Vlasenko78436992008-07-10 14:14:20 +0000484 if (!modinfo[i].aliases) {
485 parse_module(&modinfo[i], modinfo[i].pathname);
486 }
Denys Vlasenko07e55552014-04-21 16:59:36 +0200487 infovec = xzalloc(2 * sizeof(infovec[0]));
488 infovec[0] = &modinfo[i];
489 return infovec;
Denis Vlasenko671691c2008-07-04 10:25:44 +0000490 }
Denis Vlasenko671691c2008-07-04 10:25:44 +0000491 i++;
492 }
493
Denis Vlasenko7f950a92008-07-10 14:14:45 +0000494 /* Ok, we definitely have to scan module bodies. This is a good
495 * moment to generate modprobe.dep.bb, if it does not exist yet */
496 dep_bb_fd = dep_bb_seen ? -1 : start_dep_bb_writeout();
497 if (dep_bb_fd == -2) /* modprobe.dep.bb appeared? */
498 goto try_again;
499
Denis Vlasenko671691c2008-07-04 10:25:44 +0000500 /* Scan all module bodies, extract modinfo (it contains aliases) */
501 i = 0;
Denys Vlasenko07e55552014-04-21 16:59:36 +0200502 infoidx = 0;
503 infovec = NULL;
Denis Vlasenko671691c2008-07-04 10:25:44 +0000504 while (modinfo[i].pathname) {
505 char *desc, *s;
Denis Vlasenko78436992008-07-10 14:14:20 +0000506 if (!modinfo[i].aliases) {
507 parse_module(&modinfo[i], modinfo[i].pathname);
Denis Vlasenko671691c2008-07-04 10:25:44 +0000508 }
Denis Vlasenko24a131e2008-07-09 15:30:57 +0000509 /* "alias1 symbol:sym1 alias2 symbol:sym2" */
Denis Vlasenko78436992008-07-10 14:14:20 +0000510 desc = str_2_list(modinfo[i].aliases);
Denis Vlasenko671691c2008-07-04 10:25:44 +0000511 /* Does matching substring exist? */
Denis Vlasenko671691c2008-07-04 10:25:44 +0000512 for (s = desc; *s; s += strlen(s) + 1) {
Denis Vlasenko24a131e2008-07-09 15:30:57 +0000513 /* Aliases in module bodies can be defined with
Denis Vlasenko58f59a22008-07-06 11:52:23 +0000514 * shell patterns. Example:
515 * "pci:v000010DEd000000D9sv*sd*bc*sc*i*".
516 * Plain strcmp() won't catch that */
517 if (fnmatch(s, alias, 0) == 0) {
Denis Vlasenko671691c2008-07-04 10:25:44 +0000518 dbg1_error_msg("found alias '%s' in module '%s'",
519 alias, modinfo[i].pathname);
Denys Vlasenko07e55552014-04-21 16:59:36 +0200520 infovec = xrealloc_vector(infovec, 1, infoidx);
521 infovec[infoidx++] = &modinfo[i];
Denis Vlasenko7f950a92008-07-10 14:14:45 +0000522 break;
Denis Vlasenko671691c2008-07-04 10:25:44 +0000523 }
524 }
525 free(desc);
526 i++;
527 }
Denis Vlasenko7f950a92008-07-10 14:14:45 +0000528
529 /* Create module.dep.bb if needed */
530 if (dep_bb_fd >= 0) {
531 write_out_dep_bb(dep_bb_fd);
532 }
533
Denys Vlasenko07e55552014-04-21 16:59:36 +0200534 dbg1_error_msg("find_alias '%s' returns %d results", alias, infoidx);
535 return infovec;
Denis Vlasenko671691c2008-07-04 10:25:44 +0000536}
537
538#if ENABLE_FEATURE_MODPROBE_SMALL_CHECK_ALREADY_LOADED
Denis Vlasenko0f99d492008-07-24 23:38:04 +0000539// TODO: open only once, invent config_rewind()
Denis Vlasenko671691c2008-07-04 10:25:44 +0000540static int already_loaded(const char *name)
541{
542 int ret = 0;
Denis Vlasenko0f99d492008-07-24 23:38:04 +0000543 char *s;
544 parser_t *parser = config_open2("/proc/modules", xfopen_for_read);
Denis Vlasenko084266e2008-07-26 23:08:31 +0000545 while (config_read(parser, &s, 1, 1, "# \t", PARSE_NORMAL & ~PARSE_GREEDY)) {
Denis Vlasenko0f99d492008-07-24 23:38:04 +0000546 if (strcmp(s, name) == 0) {
Denis Vlasenko671691c2008-07-04 10:25:44 +0000547 ret = 1;
548 break;
549 }
Denis Vlasenko671691c2008-07-04 10:25:44 +0000550 }
Denis Vlasenko0f99d492008-07-24 23:38:04 +0000551 config_close(parser);
Denis Vlasenko671691c2008-07-04 10:25:44 +0000552 return ret;
553}
554#else
555#define already_loaded(name) is_rmmod
556#endif
557
558/*
Denis Vlasenko0e2c93f2008-07-10 14:16:11 +0000559 * Given modules definition and module name (or alias, or symbol)
560 * load/remove the module respecting dependencies.
561 * NB: also called by depmod with bogus name "/",
562 * just in order to force modprobe.dep.bb creation.
Denis Vlasenko671691c2008-07-04 10:25:44 +0000563*/
564#if !ENABLE_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE
565#define process_module(a,b) process_module(a)
566#define cmdline_options ""
567#endif
568static void process_module(char *name, const char *cmdline_options)
569{
570 char *s, *deps, *options;
Denys Vlasenko07e55552014-04-21 16:59:36 +0200571 module_info **infovec;
Denis Vlasenko671691c2008-07-04 10:25:44 +0000572 module_info *info;
Denys Vlasenko07e55552014-04-21 16:59:36 +0200573 int infoidx;
Denis Vlasenko671691c2008-07-04 10:25:44 +0000574 int is_rmmod = (option_mask32 & OPT_r) != 0;
Denys Vlasenko07e55552014-04-21 16:59:36 +0200575
Denis Vlasenko671691c2008-07-04 10:25:44 +0000576 dbg1_error_msg("process_module('%s','%s')", name, cmdline_options);
577
578 replace(name, '-', '_');
579
580 dbg1_error_msg("already_loaded:%d is_rmmod:%d", already_loaded(name), is_rmmod);
Denys Vlasenko07e55552014-04-21 16:59:36 +0200581 /*
582 * We used to have "is_rmmod != already_loaded(name)" check here, but
583 * modprobe -r pci:v00008086d00007010sv00000000sd00000000bc01sc01i80
584 * won't unload modules (there are more than one)
585 * which have this alias.
586 */
587 if (!is_rmmod && already_loaded(name)) {
Denis Vlasenko671691c2008-07-04 10:25:44 +0000588 dbg1_error_msg("nothing to do for '%s'", name);
589 return;
590 }
591
592 options = NULL;
593 if (!is_rmmod) {
594 char *opt_filename = xasprintf("/etc/modules/%s", name);
595 options = xmalloc_open_read_close(opt_filename, NULL);
596 if (options)
597 replace(options, '\n', ' ');
598#if ENABLE_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE
599 if (cmdline_options) {
600 /* NB: cmdline_options always have one leading ' '
601 * (see main()), we remove it here */
602 char *op = xasprintf(options ? "%s %s" : "%s %s" + 3,
603 cmdline_options + 1, options);
604 free(options);
605 options = op;
606 }
607#endif
608 free(opt_filename);
609 module_load_options = options;
610 dbg1_error_msg("process_module('%s'): options:'%s'", name, options);
611 }
612
613 if (!module_count) {
614 /* Scan module directory. This is done only once.
615 * It will attempt module load, and will exit(EXIT_SUCCESS)
Denys Vlasenko07e55552014-04-21 16:59:36 +0200616 * on success.
617 */
Denis Vlasenko671691c2008-07-04 10:25:44 +0000618 module_found_idx = -1;
619 recursive_action(".",
620 ACTION_RECURSE, /* flags */
621 fileAction, /* file action */
622 NULL, /* dir action */
623 name, /* user data */
Denys Vlasenko07e55552014-04-21 16:59:36 +0200624 0 /* depth */
625 );
Denis Vlasenko671691c2008-07-04 10:25:44 +0000626 dbg1_error_msg("dirscan complete");
627 /* Module was not found, or load failed, or is_rmmod */
628 if (module_found_idx >= 0) { /* module was found */
Denys Vlasenko07e55552014-04-21 16:59:36 +0200629 infovec = xzalloc(2 * sizeof(infovec[0]));
630 infovec[0] = &modinfo[module_found_idx];
Denis Vlasenko671691c2008-07-04 10:25:44 +0000631 } else { /* search for alias, not a plain module name */
Denys Vlasenko07e55552014-04-21 16:59:36 +0200632 infovec = find_alias(name);
Denis Vlasenko671691c2008-07-04 10:25:44 +0000633 }
634 } else {
Denys Vlasenko07e55552014-04-21 16:59:36 +0200635 infovec = find_alias(name);
Denis Vlasenko671691c2008-07-04 10:25:44 +0000636 }
637
Denys Vlasenko3c75b1c2015-01-11 17:40:30 +0100638 if (!infovec) {
639 /* both dirscan and find_alias found nothing */
640 if (!is_rmmod && applet_name[0] != 'd') /* it wasn't rmmod or depmod */
641 bb_error_msg("module '%s' not found", name);
642//TODO: _and_die()? or should we continue (un)loading modules listed on cmdline?
643 goto ret;
644 }
645
Denys Vlasenko07e55552014-04-21 16:59:36 +0200646 /* There can be more than one module for the given alias. For example,
647 * "pci:v00008086d00007010sv00000000sd00000000bc01sc01i80" matches
648 * ata_piix because it has alias "pci:v00008086d00007010sv*sd*bc*sc*i*"
649 * and ata_generic, it has alias "pci:v*d*sv*sd*bc01sc01i*"
650 * Standard modprobe loads them both. We achieve it by returning
651 * a *list* of modinfo pointers from find_alias().
652 */
Denys Vlasenko63321512009-10-08 22:54:41 +0200653
Denys Vlasenko07e55552014-04-21 16:59:36 +0200654 /* rmmod or modprobe -r? unload module(s) */
Denis Vlasenko671691c2008-07-04 10:25:44 +0000655 if (is_rmmod) {
Denys Vlasenko07e55552014-04-21 16:59:36 +0200656 infoidx = 0;
657 while ((info = infovec[infoidx++]) != NULL) {
658 int r;
659 char modname[MODULE_NAME_LEN];
660
Denys Vlasenko3c75b1c2015-01-11 17:40:30 +0100661 filename2modname(
662 bb_get_last_path_component_nostrip(info->pathname), modname);
Denys Vlasenko07e55552014-04-21 16:59:36 +0200663 r = delete_module(modname, O_NONBLOCK | O_EXCL);
664 dbg1_error_msg("delete_module('%s', O_NONBLOCK | O_EXCL):%d", modname, r);
665 if (r != 0) {
666 if (!(option_mask32 & OPT_q))
667 bb_perror_msg("remove '%s'", modname);
668 goto ret;
669 }
Denis Vlasenko671691c2008-07-04 10:25:44 +0000670 }
Denys Vlasenko06a98e32012-09-25 20:37:38 +0200671
672 if (applet_name[0] == 'r') {
673 /* rmmod: do not remove dependencies, exit */
674 goto ret;
675 }
676
677 /* modprobe -r: we do not stop here -
Denis Vlasenko671691c2008-07-04 10:25:44 +0000678 * continue to unload modules on which the module depends:
679 * "-r --remove: option causes modprobe to remove a module.
680 * If the modules it depends on are also unused, modprobe
Denys Vlasenko06a98e32012-09-25 20:37:38 +0200681 * will try to remove them, too."
682 */
Denis Vlasenko671691c2008-07-04 10:25:44 +0000683 }
684
Denys Vlasenko07e55552014-04-21 16:59:36 +0200685 infoidx = 0;
686 while ((info = infovec[infoidx++]) != NULL) {
687 /* Iterate thru dependencies, trying to (un)load them */
688 deps = str_2_list(info->deps);
689 for (s = deps; *s; s += strlen(s) + 1) {
690 //if (strcmp(name, s) != 0) // N.B. do loops exist?
691 dbg1_error_msg("recurse on dep '%s'", s);
692 process_module(s, NULL);
693 dbg1_error_msg("recurse on dep '%s' done", s);
694 }
695 free(deps);
Denis Vlasenko671691c2008-07-04 10:25:44 +0000696
Denys Vlasenko07e55552014-04-21 16:59:36 +0200697 if (is_rmmod)
698 continue;
699
700 /* We are modprobe: load it */
701 if (options && strstr(options, "blacklist")) {
Denis Vlasenko1ad4db12008-11-12 00:09:58 +0000702 dbg1_error_msg("'%s': blacklisted", info->pathname);
Denys Vlasenko07e55552014-04-21 16:59:36 +0200703 continue;
704 }
705 errno = 0;
706 if (load_module(info->pathname, options) != 0) {
707 if (EEXIST != errno) {
708 bb_error_msg("'%s': %s",
709 info->pathname,
710 moderror(errno));
711 } else {
712 dbg1_error_msg("'%s': %s",
713 info->pathname,
714 moderror(errno));
715 }
Denis Vlasenko671691c2008-07-04 10:25:44 +0000716 }
717 }
718 ret:
Denys Vlasenko07e55552014-04-21 16:59:36 +0200719 free(infovec);
Denis Vlasenko671691c2008-07-04 10:25:44 +0000720 free(options);
721//TODO: return load attempt result from process_module.
722//If dep didn't load ok, continuing makes little sense.
723}
724#undef cmdline_options
725
726
Denis Vlasenko0e2c93f2008-07-10 14:16:11 +0000727/* For reference, module-init-tools v3.4 options:
Denis Vlasenko671691c2008-07-04 10:25:44 +0000728
729# insmod
730Usage: insmod filename [args]
731
732# rmmod --help
733Usage: rmmod [-fhswvV] modulename ...
Denis Vlasenko0e2c93f2008-07-10 14:16:11 +0000734 -f (or --force) forces a module unload, and may crash your
735 machine. This requires the Forced Module Removal option
736 when the kernel was compiled.
737 -h (or --help) prints this help text
Denis Vlasenko671691c2008-07-04 10:25:44 +0000738 -s (or --syslog) says use syslog, not stderr
739 -v (or --verbose) enables more messages
Denis Vlasenko0e2c93f2008-07-10 14:16:11 +0000740 -V (or --version) prints the version code
Denis Vlasenko35d8c472008-08-05 07:59:25 +0000741 -w (or --wait) begins module removal even if it is used
Denis Vlasenko671691c2008-07-04 10:25:44 +0000742 and will stop new users from accessing the module (so it
743 should eventually fall to zero).
744
745# modprobe
Denis Vlasenko0e2c93f2008-07-10 14:16:11 +0000746Usage: modprobe [-v] [-V] [-C config-file] [-n] [-i] [-q] [-b]
747 [-o <modname>] [ --dump-modversions ] <modname> [parameters...]
748modprobe -r [-n] [-i] [-v] <modulename> ...
749modprobe -l -t <dirname> [ -a <modulename> ...]
Denis Vlasenko671691c2008-07-04 10:25:44 +0000750
751# depmod --help
Denis Vlasenko0e2c93f2008-07-10 14:16:11 +0000752depmod 3.4 -- part of module-init-tools
753depmod -[aA] [-n -e -v -q -V -r -u]
754 [-b basedirectory] [forced_version]
755depmod [-n -e -v -q -r -u] [-F kernelsyms] module1.ko module2.ko ...
756If no arguments (except options) are given, "depmod -a" is assumed.
Denys Vlasenkobf2af9a2009-05-25 04:15:37 +0200757depmod will output a dependency list suitable for the modprobe utility.
Denis Vlasenko671691c2008-07-04 10:25:44 +0000758Options:
Denis Vlasenko35d8c472008-08-05 07:59:25 +0000759 -a, --all Probe all modules
760 -A, --quick Only does the work if there's a new module
761 -n, --show Write the dependency file on stdout only
762 -e, --errsyms Report not supplied symbols
763 -V, --version Print the release version
764 -v, --verbose Enable verbose mode
765 -h, --help Print this usage message
Denis Vlasenko0e2c93f2008-07-10 14:16:11 +0000766The following options are useful for people managing distributions:
767 -b basedirectory
Denis Vlasenko35d8c472008-08-05 07:59:25 +0000768 --basedir basedirectory
769 Use an image of a module tree
Denis Vlasenko0e2c93f2008-07-10 14:16:11 +0000770 -F kernelsyms
Denis Vlasenko35d8c472008-08-05 07:59:25 +0000771 --filesyms kernelsyms
772 Use the file instead of the current kernel symbols
Denis Vlasenko671691c2008-07-04 10:25:44 +0000773*/
774
Pascal Bellardb82b34e2010-06-07 01:16:45 +0200775//usage:#if ENABLE_MODPROBE_SMALL
Denys Vlasenko1a5e11c2010-10-16 01:56:41 +0200776
777//usage:#define depmod_trivial_usage NOUSAGE_STR
778//usage:#define depmod_full_usage ""
779
780//usage:#define lsmod_trivial_usage
781//usage: ""
782//usage:#define lsmod_full_usage "\n\n"
783//usage: "List the currently loaded kernel modules"
784
785//usage:#define insmod_trivial_usage
786//usage: IF_FEATURE_2_4_MODULES("[OPTIONS] MODULE ")
787//usage: IF_NOT_FEATURE_2_4_MODULES("FILE ")
788//usage: "[SYMBOL=VALUE]..."
789//usage:#define insmod_full_usage "\n\n"
Denys Vlasenko5fd3ddf2014-04-19 15:04:39 +0200790//usage: "Load kernel module"
Denys Vlasenko1a5e11c2010-10-16 01:56:41 +0200791//usage: IF_FEATURE_2_4_MODULES( "\n"
Denys Vlasenko1a5e11c2010-10-16 01:56:41 +0200792//usage: "\n -f Force module to load into the wrong kernel version"
793//usage: "\n -k Make module autoclean-able"
794//usage: "\n -v Verbose"
795//usage: "\n -q Quiet"
796//usage: "\n -L Lock: prevent simultaneous loads"
797//usage: IF_FEATURE_INSMOD_LOAD_MAP(
798//usage: "\n -m Output load map to stdout"
799//usage: )
800//usage: "\n -x Don't export externs"
801//usage: )
802
803//usage:#define rmmod_trivial_usage
804//usage: "[-wfa] [MODULE]..."
805//usage:#define rmmod_full_usage "\n\n"
806//usage: "Unload kernel modules\n"
Denys Vlasenko1a5e11c2010-10-16 01:56:41 +0200807//usage: "\n -w Wait until the module is no longer used"
808//usage: "\n -f Force unload"
809//usage: "\n -a Remove all unused modules (recursively)"
810//usage:
811//usage:#define rmmod_example_usage
812//usage: "$ rmmod tulip\n"
813
Pascal Bellardb82b34e2010-06-07 01:16:45 +0200814//usage:#define modprobe_trivial_usage
Denys Vlasenko5fd3ddf2014-04-19 15:04:39 +0200815//usage: "[-qfwrsv] MODULE [SYMBOL=VALUE]..."
Pascal Bellardb82b34e2010-06-07 01:16:45 +0200816//usage:#define modprobe_full_usage "\n\n"
Denys Vlasenko66426762011-06-05 03:58:28 +0200817//usage: " -r Remove MODULE (stacks) or do autoclean"
Pascal Bellardb82b34e2010-06-07 01:16:45 +0200818//usage: "\n -q Quiet"
819//usage: "\n -v Verbose"
820//usage: "\n -f Force"
821//usage: "\n -w Wait for unload"
822//usage: "\n -s Report via syslog instead of stderr"
Denys Vlasenko1a5e11c2010-10-16 01:56:41 +0200823
824//usage:#endif
Pascal Bellardb82b34e2010-06-07 01:16:45 +0200825
Denis Vlasenko671691c2008-07-04 10:25:44 +0000826int modprobe_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
Denis Vlasenkoa60f84e2008-07-05 09:18:54 +0000827int modprobe_main(int argc UNUSED_PARAM, char **argv)
Denis Vlasenko671691c2008-07-04 10:25:44 +0000828{
829 struct utsname uts;
830 char applet0 = applet_name[0];
Denis Vlasenko5e34ff22009-04-21 11:09:40 +0000831 IF_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE(char *options;)
Denis Vlasenko671691c2008-07-04 10:25:44 +0000832
Denis Vlasenko671691c2008-07-04 10:25:44 +0000833 /* are we lsmod? -> just dump /proc/modules */
834 if ('l' == applet0) {
Denis Vlasenko5415c852008-07-21 23:05:26 +0000835 xprint_and_close_file(xfopen_for_read("/proc/modules"));
Denis Vlasenko671691c2008-07-04 10:25:44 +0000836 return EXIT_SUCCESS;
837 }
838
839 INIT_G();
840
Denis Vlasenko0e2c93f2008-07-10 14:16:11 +0000841 /* Prevent ugly corner cases with no modules at all */
842 modinfo = xzalloc(sizeof(modinfo[0]));
843
Denis Vlasenko1c781cc2008-09-06 14:14:01 +0000844 if ('i' != applet0) { /* not insmod */
845 /* Goto modules directory */
846 xchdir(CONFIG_DEFAULT_MODULES_DIR);
847 }
Denis Vlasenko0e2c93f2008-07-10 14:16:11 +0000848 uname(&uts); /* never fails */
849
850 /* depmod? */
851 if ('d' == applet0) {
852 /* Supported:
853 * -n: print result to stdout
854 * -a: process all modules (default)
855 * optional VERSION parameter
856 * Ignored:
857 * -A: do work only if a module is newer than depfile
858 * -e: report any symbols which a module needs
859 * which are not supplied by other modules or the kernel
860 * -F FILE: System.map (symbols for -e)
861 * -q, -r, -u: noop?
862 * Not supported:
863 * -b BASEDIR: (TODO!) modules are in
864 * $BASEDIR/lib/modules/$VERSION
865 * -v: human readable deps to stdout
866 * -V: version (don't want to support it - people may depend
867 * on it as an indicator of "standard" depmod)
868 * -h: help (well duh)
869 * module1.o module2.o parameters (just ignored for now)
870 */
871 getopt32(argv, "na" "AeF:qru" /* "b:vV", NULL */, NULL);
872 argv += optind;
873 /* if (argv[0] && argv[1]) bb_show_usage(); */
874 /* Goto $VERSION directory */
875 xchdir(argv[0] ? argv[0] : uts.release);
876 /* Force full module scan by asking to find a bogus module.
877 * This will generate modules.dep.bb as a side effect. */
878 process_module((char*)"/", NULL);
879 return !wrote_dep_bb_ok;
880 }
881
Denis Vlasenko671691c2008-07-04 10:25:44 +0000882 /* insmod, modprobe, rmmod require at least one argument */
883 opt_complementary = "-1";
884 /* only -q (quiet) and -r (rmmod),
885 * the rest are accepted and ignored (compat) */
Felipe Contreras428bd2d2012-01-31 14:55:15 +0100886 getopt32(argv, "qrfsvwb");
Denis Vlasenko671691c2008-07-04 10:25:44 +0000887 argv += optind;
888
889 /* are we rmmod? -> simulate modprobe -r */
890 if ('r' == applet0) {
891 option_mask32 |= OPT_r;
892 }
893
Denis Vlasenko1c781cc2008-09-06 14:14:01 +0000894 if ('i' != applet0) { /* not insmod */
895 /* Goto $VERSION directory */
896 xchdir(uts.release);
897 }
Denis Vlasenko671691c2008-07-04 10:25:44 +0000898
899#if ENABLE_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE
900 /* If not rmmod, parse possible module options given on command line.
901 * insmod/modprobe takes one module name, the rest are parameters. */
902 options = NULL;
903 if ('r' != applet0) {
904 char **arg = argv;
905 while (*++arg) {
906 /* Enclose options in quotes */
907 char *s = options;
908 options = xasprintf("%s \"%s\"", s ? s : "", *arg);
909 free(s);
910 *arg = NULL;
911 }
912 }
913#else
914 if ('r' != applet0)
915 argv[1] = NULL;
916#endif
917
Denis Vlasenko1c781cc2008-09-06 14:14:01 +0000918 if ('i' == applet0) { /* insmod */
919 size_t len;
920 void *map;
921
922 len = MAXINT(ssize_t);
Denys Vlasenkoe9d12b52011-01-09 20:57:52 +0100923 map = xmalloc_open_zipped_read_close(*argv, &len);
Denys Vlasenko094cc512011-01-17 14:58:27 +0100924 if (!map)
925 bb_perror_msg_and_die("can't read '%s'", *argv);
Denis Vlasenko1c781cc2008-09-06 14:14:01 +0000926 if (init_module(map, len,
Denis Vlasenko5e34ff22009-04-21 11:09:40 +0000927 IF_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE(options ? options : "")
928 IF_NOT_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE("")
Denys Vlasenkoe9d12b52011-01-09 20:57:52 +0100929 ) != 0
930 ) {
Denis Vlasenko1f632292009-04-13 02:25:40 +0000931 bb_error_msg_and_die("can't insert '%s': %s",
Denis Vlasenko1c781cc2008-09-06 14:14:01 +0000932 *argv, moderror(errno));
Denys Vlasenkoe9d12b52011-01-09 20:57:52 +0100933 }
Denis Vlasenko1c781cc2008-09-06 14:14:01 +0000934 return 0;
935 }
936
Denis Vlasenko7f950a92008-07-10 14:14:45 +0000937 /* Try to load modprobe.dep.bb */
Denis Vlasenko78436992008-07-10 14:14:20 +0000938 load_dep_bb();
939
Denis Vlasenko671691c2008-07-04 10:25:44 +0000940 /* Load/remove modules.
Denis Vlasenko1c781cc2008-09-06 14:14:01 +0000941 * Only rmmod loops here, modprobe has only argv[0] */
Denis Vlasenko671691c2008-07-04 10:25:44 +0000942 do {
Denys Vlasenko5b3151c2010-09-25 14:37:06 +0200943 process_module(*argv, options);
944 } while (*++argv);
Denis Vlasenko671691c2008-07-04 10:25:44 +0000945
946 if (ENABLE_FEATURE_CLEAN_UP) {
Denis Vlasenko5e34ff22009-04-21 11:09:40 +0000947 IF_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE(free(options);)
Denis Vlasenko671691c2008-07-04 10:25:44 +0000948 }
949 return EXIT_SUCCESS;
950}