1 /* vi: set sw=4 ts=4: */
5 * Copyright (c) 2008 Vladimir Dronnikov
6 * Copyright (c) 2008 Bernhard Reutner-Fischer (initial depmod code)
8 * Licensed under GPLv2, see file LICENSE in this source tree.
11 //applet:IF_MODPROBE_SMALL(APPLET(modprobe, BB_DIR_SBIN, BB_SUID_DROP))
12 //applet:IF_MODPROBE_SMALL(APPLET_ODDNAME(depmod, modprobe, BB_DIR_SBIN, BB_SUID_DROP, modprobe))
13 //applet:IF_MODPROBE_SMALL(APPLET_ODDNAME(insmod, modprobe, BB_DIR_SBIN, BB_SUID_DROP, modprobe))
14 //applet:IF_MODPROBE_SMALL(APPLET_ODDNAME(lsmod, modprobe, BB_DIR_SBIN, BB_SUID_DROP, modprobe))
15 //applet:IF_MODPROBE_SMALL(APPLET_ODDNAME(rmmod, modprobe, BB_DIR_SBIN, BB_SUID_DROP, modprobe))
18 /* After libbb.h, since it needs sys/types.h on some systems */
19 #include <sys/utsname.h> /* uname() */
22 extern int init_module(void *module
, unsigned long len
, const char *options
);
23 extern int delete_module(const char *module
, unsigned flags
);
24 extern int query_module(const char *name
, int which
, void *buf
, size_t bufsize
, size_t *ret
);
28 # define dbg1_error_msg(...) ((void)0)
29 # define dbg2_error_msg(...) ((void)0)
31 # define dbg1_error_msg(...) bb_error_msg(__VA_ARGS__)
32 # define dbg2_error_msg(...) bb_error_msg(__VA_ARGS__)
35 #define DEPFILE_BB CONFIG_DEFAULT_DEPMOD_FILE".bb"
38 OPT_q
= (1 << 0), /* be quiet */
39 OPT_r
= (1 << 1), /* module removal instead of loading */
42 typedef struct module_info
{
53 char *module_load_options
;
55 smallint wrote_dep_bb_ok
;
56 unsigned module_count
;
58 unsigned stringbuf_idx
;
59 unsigned stringbuf_size
;
60 char *stringbuf
; /* some modules have lots of stuff */
61 /* for example, drivers/media/video/saa7134/saa7134.ko */
62 /* therefore having a fixed biggish buffer is not wise */
64 #define G (*ptr_to_globals)
65 #define modinfo (G.modinfo )
66 #define dep_bb_seen (G.dep_bb_seen )
67 #define wrote_dep_bb_ok (G.wrote_dep_bb_ok )
68 #define module_count (G.module_count )
69 #define module_found_idx (G.module_found_idx )
70 #define module_load_options (G.module_load_options)
71 #define stringbuf_idx (G.stringbuf_idx )
72 #define stringbuf_size (G.stringbuf_size )
73 #define stringbuf (G.stringbuf )
74 #define INIT_G() do { \
75 SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
78 static void append(const char *s
)
80 unsigned len
= strlen(s
);
81 if (stringbuf_idx
+ len
+ 15 > stringbuf_size
) {
82 stringbuf_size
= stringbuf_idx
+ len
+ 127;
83 dbg2_error_msg("grow stringbuf to %u", stringbuf_size
);
84 stringbuf
= xrealloc(stringbuf
, stringbuf_size
);
86 memcpy(stringbuf
+ stringbuf_idx
, s
, len
);
90 static void appendc(char c
)
92 /* We appendc() only after append(), + 15 trick in append()
93 * makes it unnecessary to check for overflow here */
94 stringbuf
[stringbuf_idx
++] = c
;
97 static void bksp(void)
103 static void reset_stringbuf(void)
108 static char* copy_stringbuf(void)
110 char *copy
= xzalloc(stringbuf_idx
+ 1); /* terminating NUL */
111 return memcpy(copy
, stringbuf
, stringbuf_idx
);
114 static char* find_keyword(char *ptr
, size_t len
, const char *word
)
118 if (!ptr
) /* happens if xmalloc_open_zipped_read_close cannot read it */
123 while ((ssize_t
)len
> 0) {
125 /* search for the first char in word */
126 ptr
= memchr(ptr
, *word
, len
);
127 if (ptr
== NULL
) /* no occurance left, done */
129 if (strncmp(ptr
, word
, wlen
) == 0)
130 return ptr
+ wlen
; /* found, return ptr past it */
137 static void replace(char *s
, char what
, char with
)
146 /* Take "word word", return malloced "word",NUL,"word",NUL,NUL */
147 static char* str_2_list(const char *str
)
149 int len
= strlen(str
) + 1;
150 char *dst
= xmalloc(len
+ 1);
153 memcpy(dst
, str
, len
);
154 //TODO: protect against 2+ spaces: "word word"
155 replace(dst
, ' ', '\0');
159 /* We use error numbers in a loose translation... */
160 static const char *moderror(int err
)
164 return "invalid module format";
166 return "unknown symbol in module or invalid parameter";
168 return "module has wrong symbol version";
169 case EINVAL
: /* "invalid parameter" */
170 return "unknown symbol in module or invalid parameter"
171 + sizeof("unknown symbol in module or");
173 return strerror(err
);
177 static int load_module(const char *fname
, const char *options
)
181 size_t len
= MAXINT(ssize_t
);
183 dbg1_error_msg("load_module('%s','%s')", fname
, options
);
185 module_image
= xmalloc_open_zipped_read_close(fname
, &len
);
186 r
= (!module_image
|| init_module(module_image
, len
, options
? options
: "") != 0);
188 dbg1_error_msg("load_module:%d", r
);
189 return r
; /* 0 = success */
192 dbg1_error_msg("load_module('%s','%s')", fname
, options
);
197 static void parse_module(module_info
*info
, const char *pathname
)
203 dbg1_error_msg("parse_module('%s')", pathname
);
205 /* Read (possibly compressed) module */
206 len
= 64 * 1024 * 1024; /* 64 Mb at most */
207 module_image
= xmalloc_open_zipped_read_close(pathname
, &len
);
208 /* module_image == NULL is ok here, find_keyword handles it */
209 //TODO: optimize redundant module body reads
211 /* "alias1 symbol:sym1 alias2 symbol:sym2" */
215 ptr
= find_keyword(module_image
+ pos
, len
- pos
, "alias=");
217 ptr
= find_keyword(module_image
+ pos
, len
- pos
, "__ksymtab_");
220 /* DOCME: __ksymtab_gpl and __ksymtab_strings occur
221 * in many modules. What do they mean? */
222 if (strcmp(ptr
, "gpl") == 0 || strcmp(ptr
, "strings") == 0)
224 dbg2_error_msg("alias:'symbol:%s'", ptr
);
227 dbg2_error_msg("alias:'%s'", ptr
);
232 pos
= (ptr
- module_image
);
234 bksp(); /* remove last ' ' */
235 info
->aliases
= copy_stringbuf();
236 replace(info
->aliases
, '-', '_');
238 /* "dependency1 depandency2" */
240 ptr
= find_keyword(module_image
, len
, "depends=");
242 replace(ptr
, ',', ' ');
243 replace(ptr
, '-', '_');
244 dbg2_error_msg("dep:'%s'", ptr
);
247 info
->deps
= copy_stringbuf();
252 static int pathname_matches_modname(const char *pathname
, const char *modname
)
254 const char *fname
= bb_get_last_path_component_nostrip(pathname
);
255 const char *suffix
= strrstr(fname
, ".ko");
256 //TODO: can do without malloc?
257 char *name
= xstrndup(fname
, suffix
- fname
);
259 replace(name
, '-', '_');
260 r
= (strcmp(name
, modname
) == 0);
265 static FAST_FUNC
int fileAction(const char *pathname
,
266 struct stat
*sb UNUSED_PARAM
,
267 void *modname_to_match
,
268 int depth UNUSED_PARAM
)
273 pathname
+= 2; /* skip "./" */
274 fname
= bb_get_last_path_component_nostrip(pathname
);
275 if (!strrstr(fname
, ".ko")) {
276 dbg1_error_msg("'%s' is not a module", pathname
);
277 return TRUE
; /* not a module, continue search */
280 cur
= module_count
++;
281 modinfo
= xrealloc_vector(modinfo
, 12, cur
);
282 modinfo
[cur
].pathname
= xstrdup(pathname
);
283 /*modinfo[cur].aliases = NULL; - xrealloc_vector did it */
284 /*modinfo[cur+1].pathname = NULL;*/
286 if (!pathname_matches_modname(fname
, modname_to_match
)) {
287 dbg1_error_msg("'%s' module name doesn't match", pathname
);
288 return TRUE
; /* module name doesn't match, continue search */
291 dbg1_error_msg("'%s' module name matches", pathname
);
292 module_found_idx
= cur
;
293 parse_module(&modinfo
[cur
], pathname
);
295 if (!(option_mask32
& OPT_r
)) {
296 if (load_module(pathname
, module_load_options
) == 0) {
297 /* Load was successful, there is nothing else to do.
298 * This can happen ONLY for "top-level" module load,
299 * not a dep, because deps dont do dirscan. */
307 static int load_dep_bb(void)
310 FILE *fp
= fopen_for_read(DEPFILE_BB
);
316 dbg1_error_msg("loading "DEPFILE_BB
);
318 /* Why? There is a rare scenario: we did not find modprobe.dep.bb,
319 * we scanned the dir and found no module by name, then we search
320 * for alias (full scan), and we decided to generate modprobe.dep.bb.
321 * But we see modprobe.dep.bb.new! Other modprobe is at work!
322 * We wait and other modprobe renames it to modprobe.dep.bb.
324 * But we already have modinfo[] filled, and "module_count = 0"
325 * makes us start anew. Yes, we leak modinfo[].xxx pointers -
326 * there is not much of data there anyway. */
328 memset(&modinfo
[0], 0, sizeof(modinfo
[0]));
330 while ((line
= xmalloc_fgetline(fp
)) != NULL
) {
339 space
= strchrnul(line
, ' ');
340 cur
= module_count
++;
341 modinfo
= xrealloc_vector(modinfo
, 12, cur
);
342 /*modinfo[cur+1].pathname = NULL; - xrealloc_vector did it */
343 modinfo
[cur
].pathname
= line
; /* we take ownership of malloced block here */
346 modinfo
[cur
].aliases
= space
;
347 linebuf
= xmalloc_fgetline(fp
);
348 modinfo
[cur
].deps
= linebuf
? linebuf
: xzalloc(1);
349 if (modinfo
[cur
].deps
[0]) {
350 /* deps are not "", so next line must be empty */
351 line
= xmalloc_fgetline(fp
);
352 /* Refuse to work with damaged config file */
354 bb_error_msg_and_die("error in %s at '%s'", DEPFILE_BB
, line
);
361 static int start_dep_bb_writeout(void)
365 /* depmod -n: write result to stdout */
366 if (applet_name
[0] == 'd' && (option_mask32
& 1))
367 return STDOUT_FILENO
;
369 fd
= open(DEPFILE_BB
".new", O_WRONLY
| O_CREAT
| O_TRUNC
| O_EXCL
, 0644);
371 if (errno
== EEXIST
) {
373 dbg1_error_msg(DEPFILE_BB
".new exists, waiting for "DEPFILE_BB
);
375 usleep(1000*1000 / 20);
377 dbg1_error_msg(DEPFILE_BB
" appeared");
378 return -2; /* magic number */
383 bb_error_msg("deleting stale %s", DEPFILE_BB
".new");
384 fd
= open_or_warn(DEPFILE_BB
".new", O_WRONLY
| O_CREAT
| O_TRUNC
);
387 dbg1_error_msg("opened "DEPFILE_BB
".new:%d", fd
);
391 static void write_out_dep_bb(int fd
)
396 /* We want good error reporting. fdprintf is not good enough. */
397 fp
= xfdopen_for_write(fd
);
399 while (modinfo
[i
].pathname
) {
400 fprintf(fp
, "%s%s%s\n" "%s%s\n",
401 modinfo
[i
].pathname
, modinfo
[i
].aliases
[0] ? " " : "", modinfo
[i
].aliases
,
402 modinfo
[i
].deps
, modinfo
[i
].deps
[0] ? "\n" : "");
405 /* Badly formatted depfile is a no-no. Be paranoid. */
407 if (ferror(fp
) | fclose(fp
)) /* | instead of || is intended */
410 if (fd
== STDOUT_FILENO
) /* it was depmod -n */
413 if (rename(DEPFILE_BB
".new", DEPFILE_BB
) != 0) {
415 bb_perror_msg("can't create '%s'", DEPFILE_BB
);
416 unlink(DEPFILE_BB
".new");
420 dbg1_error_msg("created "DEPFILE_BB
);
424 static module_info
* find_alias(const char *alias
)
429 dbg1_error_msg("find_alias('%s')", alias
);
432 /* First try to find by name (cheaper) */
434 while (modinfo
[i
].pathname
) {
435 if (pathname_matches_modname(modinfo
[i
].pathname
, alias
)) {
436 dbg1_error_msg("found '%s' in module '%s'",
437 alias
, modinfo
[i
].pathname
);
438 if (!modinfo
[i
].aliases
) {
439 parse_module(&modinfo
[i
], modinfo
[i
].pathname
);
446 /* Ok, we definitely have to scan module bodies. This is a good
447 * moment to generate modprobe.dep.bb, if it does not exist yet */
448 dep_bb_fd
= dep_bb_seen
? -1 : start_dep_bb_writeout();
449 if (dep_bb_fd
== -2) /* modprobe.dep.bb appeared? */
452 /* Scan all module bodies, extract modinfo (it contains aliases) */
455 while (modinfo
[i
].pathname
) {
457 if (!modinfo
[i
].aliases
) {
458 parse_module(&modinfo
[i
], modinfo
[i
].pathname
);
464 /* "alias1 symbol:sym1 alias2 symbol:sym2" */
465 desc
= str_2_list(modinfo
[i
].aliases
);
466 /* Does matching substring exist? */
467 for (s
= desc
; *s
; s
+= strlen(s
) + 1) {
468 /* Aliases in module bodies can be defined with
469 * shell patterns. Example:
470 * "pci:v000010DEd000000D9sv*sd*bc*sc*i*".
471 * Plain strcmp() won't catch that */
472 if (fnmatch(s
, alias
, 0) == 0) {
473 dbg1_error_msg("found alias '%s' in module '%s'",
474 alias
, modinfo
[i
].pathname
);
475 result
= &modinfo
[i
];
480 if (result
&& dep_bb_fd
< 0)
485 /* Create module.dep.bb if needed */
486 if (dep_bb_fd
>= 0) {
487 write_out_dep_bb(dep_bb_fd
);
490 dbg1_error_msg("find_alias '%s' returns %p", alias
, result
);
494 #if ENABLE_FEATURE_MODPROBE_SMALL_CHECK_ALREADY_LOADED
495 // TODO: open only once, invent config_rewind()
496 static int already_loaded(const char *name
)
500 parser_t
*parser
= config_open2("/proc/modules", xfopen_for_read
);
501 while (config_read(parser
, &s
, 1, 1, "# \t", PARSE_NORMAL
& ~PARSE_GREEDY
)) {
502 if (strcmp(s
, name
) == 0) {
507 config_close(parser
);
511 #define already_loaded(name) is_rmmod
515 * Given modules definition and module name (or alias, or symbol)
516 * load/remove the module respecting dependencies.
517 * NB: also called by depmod with bogus name "/",
518 * just in order to force modprobe.dep.bb creation.
520 #if !ENABLE_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE
521 #define process_module(a,b) process_module(a)
522 #define cmdline_options ""
524 static void process_module(char *name
, const char *cmdline_options
)
526 char *s
, *deps
, *options
;
528 int is_rmmod
= (option_mask32
& OPT_r
) != 0;
529 dbg1_error_msg("process_module('%s','%s')", name
, cmdline_options
);
531 replace(name
, '-', '_');
533 dbg1_error_msg("already_loaded:%d is_rmmod:%d", already_loaded(name
), is_rmmod
);
534 if (already_loaded(name
) != is_rmmod
) {
535 dbg1_error_msg("nothing to do for '%s'", name
);
541 char *opt_filename
= xasprintf("/etc/modules/%s", name
);
542 options
= xmalloc_open_read_close(opt_filename
, NULL
);
544 replace(options
, '\n', ' ');
545 #if ENABLE_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE
546 if (cmdline_options
) {
547 /* NB: cmdline_options always have one leading ' '
548 * (see main()), we remove it here */
549 char *op
= xasprintf(options
? "%s %s" : "%s %s" + 3,
550 cmdline_options
+ 1, options
);
556 module_load_options
= options
;
557 dbg1_error_msg("process_module('%s'): options:'%s'", name
, options
);
561 /* Scan module directory. This is done only once.
562 * It will attempt module load, and will exit(EXIT_SUCCESS)
564 module_found_idx
= -1;
565 recursive_action(".",
566 ACTION_RECURSE
, /* flags */
567 fileAction
, /* file action */
568 NULL
, /* dir action */
569 name
, /* user data */
571 dbg1_error_msg("dirscan complete");
572 /* Module was not found, or load failed, or is_rmmod */
573 if (module_found_idx
>= 0) { /* module was found */
574 info
= &modinfo
[module_found_idx
];
575 } else { /* search for alias, not a plain module name */
576 info
= find_alias(name
);
579 info
= find_alias(name
);
582 // Problem here: there can be more than one module
583 // for the given alias. For example,
584 // "pci:v00008086d00007010sv00000000sd00000000bc01sc01i80" matches
585 // ata_piix because it has an alias "pci:v00008086d00007010sv*sd*bc*sc*i*"
586 // and ata_generic, it has an alias "alias=pci:v*d*sv*sd*bc01sc01i*"
587 // Standard modprobe would load them both.
588 // In this code, find_alias() returns only the first matching module.
590 /* rmmod? unload it by name */
592 if (delete_module(name
, O_NONBLOCK
| O_EXCL
) != 0) {
593 if (!(option_mask32
& OPT_q
))
594 bb_perror_msg("remove '%s'", name
);
598 if (applet_name
[0] == 'r') {
599 /* rmmod: do not remove dependencies, exit */
603 /* modprobe -r: we do not stop here -
604 * continue to unload modules on which the module depends:
605 * "-r --remove: option causes modprobe to remove a module.
606 * If the modules it depends on are also unused, modprobe
607 * will try to remove them, too."
612 /* both dirscan and find_alias found nothing */
613 if (!is_rmmod
&& applet_name
[0] != 'd') /* it wasn't rmmod or depmod */
614 bb_error_msg("module '%s' not found", name
);
615 //TODO: _and_die()? or should we continue (un)loading modules listed on cmdline?
619 /* Iterate thru dependencies, trying to (un)load them */
620 deps
= str_2_list(info
->deps
);
621 for (s
= deps
; *s
; s
+= strlen(s
) + 1) {
622 //if (strcmp(name, s) != 0) // N.B. do loops exist?
623 dbg1_error_msg("recurse on dep '%s'", s
);
624 process_module(s
, NULL
);
625 dbg1_error_msg("recurse on dep '%s' done", s
);
629 /* modprobe -> load it */
631 if (!options
|| strstr(options
, "blacklist") == NULL
) {
633 if (load_module(info
->pathname
, options
) != 0) {
634 if (EEXIST
!= errno
) {
635 bb_error_msg("'%s': %s",
639 dbg1_error_msg("'%s': %s",
645 dbg1_error_msg("'%s': blacklisted", info
->pathname
);
650 //TODO: return load attempt result from process_module.
651 //If dep didn't load ok, continuing makes little sense.
653 #undef cmdline_options
656 /* For reference, module-init-tools v3.4 options:
659 Usage: insmod filename [args]
662 Usage: rmmod [-fhswvV] modulename ...
663 -f (or --force) forces a module unload, and may crash your
664 machine. This requires the Forced Module Removal option
665 when the kernel was compiled.
666 -h (or --help) prints this help text
667 -s (or --syslog) says use syslog, not stderr
668 -v (or --verbose) enables more messages
669 -V (or --version) prints the version code
670 -w (or --wait) begins module removal even if it is used
671 and will stop new users from accessing the module (so it
672 should eventually fall to zero).
675 Usage: modprobe [-v] [-V] [-C config-file] [-n] [-i] [-q] [-b]
676 [-o <modname>] [ --dump-modversions ] <modname> [parameters...]
677 modprobe -r [-n] [-i] [-v] <modulename> ...
678 modprobe -l -t <dirname> [ -a <modulename> ...]
681 depmod 3.4 -- part of module-init-tools
682 depmod -[aA] [-n -e -v -q -V -r -u]
683 [-b basedirectory] [forced_version]
684 depmod [-n -e -v -q -r -u] [-F kernelsyms] module1.ko module2.ko ...
685 If no arguments (except options) are given, "depmod -a" is assumed.
686 depmod will output a dependency list suitable for the modprobe utility.
688 -a, --all Probe all modules
689 -A, --quick Only does the work if there's a new module
690 -n, --show Write the dependency file on stdout only
691 -e, --errsyms Report not supplied symbols
692 -V, --version Print the release version
693 -v, --verbose Enable verbose mode
694 -h, --help Print this usage message
695 The following options are useful for people managing distributions:
697 --basedir basedirectory
698 Use an image of a module tree
700 --filesyms kernelsyms
701 Use the file instead of the current kernel symbols
704 //usage:#if ENABLE_MODPROBE_SMALL
706 //// Note: currently, help system shows modprobe --help text for all aliased cmds
707 //// (see APPLET_ODDNAME macro definition).
708 //// All other help texts defined below are not used. FIXME?
710 //usage:#define depmod_trivial_usage NOUSAGE_STR
711 //usage:#define depmod_full_usage ""
713 //usage:#define lsmod_trivial_usage
715 //usage:#define lsmod_full_usage "\n\n"
716 //usage: "List the currently loaded kernel modules"
718 //usage:#define insmod_trivial_usage
719 //usage: IF_FEATURE_2_4_MODULES("[OPTIONS] MODULE ")
720 //usage: IF_NOT_FEATURE_2_4_MODULES("FILE ")
721 //usage: "[SYMBOL=VALUE]..."
722 //usage:#define insmod_full_usage "\n\n"
723 //usage: "Load the specified kernel modules into the kernel"
724 //usage: IF_FEATURE_2_4_MODULES( "\n"
725 //usage: "\n -f Force module to load into the wrong kernel version"
726 //usage: "\n -k Make module autoclean-able"
727 //usage: "\n -v Verbose"
728 //usage: "\n -q Quiet"
729 //usage: "\n -L Lock: prevent simultaneous loads"
730 //usage: IF_FEATURE_INSMOD_LOAD_MAP(
731 //usage: "\n -m Output load map to stdout"
733 //usage: "\n -x Don't export externs"
736 //usage:#define rmmod_trivial_usage
737 //usage: "[-wfa] [MODULE]..."
738 //usage:#define rmmod_full_usage "\n\n"
739 //usage: "Unload kernel modules\n"
740 //usage: "\n -w Wait until the module is no longer used"
741 //usage: "\n -f Force unload"
742 //usage: "\n -a Remove all unused modules (recursively)"
744 //usage:#define rmmod_example_usage
745 //usage: "$ rmmod tulip\n"
747 //usage:#define modprobe_trivial_usage
748 //usage: "[-qfwrsv] MODULE [symbol=value]..."
749 //usage:#define modprobe_full_usage "\n\n"
750 //usage: " -r Remove MODULE (stacks) or do autoclean"
751 //usage: "\n -q Quiet"
752 //usage: "\n -v Verbose"
753 //usage: "\n -f Force"
754 //usage: "\n -w Wait for unload"
755 //usage: "\n -s Report via syslog instead of stderr"
759 int modprobe_main(int argc
, char **argv
) MAIN_EXTERNALLY_VISIBLE
;
760 int modprobe_main(int argc UNUSED_PARAM
, char **argv
)
763 char applet0
= applet_name
[0];
764 IF_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE(char *options
;)
766 /* are we lsmod? -> just dump /proc/modules */
767 if ('l' == applet0
) {
768 xprint_and_close_file(xfopen_for_read("/proc/modules"));
774 /* Prevent ugly corner cases with no modules at all */
775 modinfo
= xzalloc(sizeof(modinfo
[0]));
777 if ('i' != applet0
) { /* not insmod */
778 /* Goto modules directory */
779 xchdir(CONFIG_DEFAULT_MODULES_DIR
);
781 uname(&uts
); /* never fails */
784 if ('d' == applet0
) {
786 * -n: print result to stdout
787 * -a: process all modules (default)
788 * optional VERSION parameter
790 * -A: do work only if a module is newer than depfile
791 * -e: report any symbols which a module needs
792 * which are not supplied by other modules or the kernel
793 * -F FILE: System.map (symbols for -e)
796 * -b BASEDIR: (TODO!) modules are in
797 * $BASEDIR/lib/modules/$VERSION
798 * -v: human readable deps to stdout
799 * -V: version (don't want to support it - people may depend
800 * on it as an indicator of "standard" depmod)
801 * -h: help (well duh)
802 * module1.o module2.o parameters (just ignored for now)
804 getopt32(argv
, "na" "AeF:qru" /* "b:vV", NULL */, NULL
);
806 /* if (argv[0] && argv[1]) bb_show_usage(); */
807 /* Goto $VERSION directory */
808 xchdir(argv
[0] ? argv
[0] : uts
.release
);
809 /* Force full module scan by asking to find a bogus module.
810 * This will generate modules.dep.bb as a side effect. */
811 process_module((char*)"/", NULL
);
812 return !wrote_dep_bb_ok
;
815 /* insmod, modprobe, rmmod require at least one argument */
816 opt_complementary
= "-1";
817 /* only -q (quiet) and -r (rmmod),
818 * the rest are accepted and ignored (compat) */
819 getopt32(argv
, "qrfsvwb");
822 /* are we rmmod? -> simulate modprobe -r */
823 if ('r' == applet0
) {
824 option_mask32
|= OPT_r
;
827 if ('i' != applet0
) { /* not insmod */
828 /* Goto $VERSION directory */
832 #if ENABLE_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE
833 /* If not rmmod, parse possible module options given on command line.
834 * insmod/modprobe takes one module name, the rest are parameters. */
836 if ('r' != applet0
) {
839 /* Enclose options in quotes */
841 options
= xasprintf("%s \"%s\"", s
? s
: "", *arg
);
851 if ('i' == applet0
) { /* insmod */
855 len
= MAXINT(ssize_t
);
856 map
= xmalloc_open_zipped_read_close(*argv
, &len
);
858 bb_perror_msg_and_die("can't read '%s'", *argv
);
859 if (init_module(map
, len
,
860 IF_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE(options
? options
: "")
861 IF_NOT_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE("")
864 bb_error_msg_and_die("can't insert '%s': %s",
865 *argv
, moderror(errno
));
870 /* Try to load modprobe.dep.bb */
873 /* Load/remove modules.
874 * Only rmmod loops here, modprobe has only argv[0] */
876 process_module(*argv
, options
);
879 if (ENABLE_FEATURE_CLEAN_UP
) {
880 IF_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE(free(options
);)