2008-05-26 12:01:49 +00:00
|
|
|
/* vi: set sw=4 ts=4: */
|
|
|
|
/*
|
|
|
|
* depmod - generate modules.dep
|
2008-09-25 12:13:34 +00:00
|
|
|
* Copyright (c) 2008 Bernhard Reutner-Fischer
|
2008-09-13 14:59:38 +00:00
|
|
|
* Copyrihgt (c) 2008 Timo Teras <timo.teras@iki.fi>
|
|
|
|
* Copyright (c) 2008 Vladimir Dronnikov
|
2008-05-26 12:01:49 +00:00
|
|
|
*
|
2010-08-16 18:14:46 +00:00
|
|
|
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
|
2008-05-26 12:01:49 +00:00
|
|
|
*/
|
|
|
|
|
2009-09-06 10:47:55 +00:00
|
|
|
#include "libbb.h"
|
2008-09-13 14:59:38 +00:00
|
|
|
#include "modutils.h"
|
2009-09-06 10:47:55 +00:00
|
|
|
#include <sys/utsname.h> /* uname() */
|
2008-09-13 14:59:38 +00:00
|
|
|
|
2008-05-26 15:12:01 +00:00
|
|
|
/*
|
|
|
|
* Theory of operation:
|
|
|
|
* - iterate over all modules and record their full path
|
|
|
|
* - iterate over all modules looking for "depends=" entries
|
|
|
|
* for each depends, look through our list of full paths and emit if found
|
|
|
|
*/
|
2008-06-02 13:28:47 +00:00
|
|
|
|
2008-09-13 14:59:38 +00:00
|
|
|
typedef struct module_info {
|
|
|
|
struct module_info *next;
|
|
|
|
char *name, *modname;
|
2008-06-02 13:28:47 +00:00
|
|
|
llist_t *dependencies;
|
2008-06-02 18:59:16 +00:00
|
|
|
llist_t *aliases;
|
2008-09-13 14:59:38 +00:00
|
|
|
llist_t *symbols;
|
|
|
|
struct module_info *dnext, *dprev;
|
|
|
|
} module_info;
|
|
|
|
|
2009-05-18 11:08:04 +00:00
|
|
|
static int FAST_FUNC parse_module(const char *fname, struct stat *sb UNUSED_PARAM,
|
|
|
|
void *data, int depth UNUSED_PARAM)
|
2008-05-26 12:01:49 +00:00
|
|
|
{
|
2009-05-18 11:08:04 +00:00
|
|
|
char modname[MODULE_NAME_LEN];
|
2008-09-13 14:59:38 +00:00
|
|
|
module_info **first = (module_info **) data;
|
|
|
|
char *image, *ptr;
|
|
|
|
module_info *info;
|
2009-05-18 11:08:04 +00:00
|
|
|
/* Arbitrary. Was sb->st_size, but that breaks .gz etc */
|
|
|
|
size_t len = (64*1024*1024 - 4096);
|
2008-09-13 14:59:38 +00:00
|
|
|
|
|
|
|
if (strrstr(fname, ".ko") == NULL)
|
|
|
|
return TRUE;
|
|
|
|
|
2008-11-06 02:32:31 +00:00
|
|
|
image = xmalloc_open_zipped_read_close(fname, &len);
|
2009-05-18 11:08:04 +00:00
|
|
|
info = xzalloc(sizeof(*info));
|
2008-09-13 14:59:38 +00:00
|
|
|
|
|
|
|
info->next = *first;
|
|
|
|
*first = info;
|
|
|
|
|
|
|
|
info->dnext = info->dprev = info;
|
2010-07-18 15:41:17 +00:00
|
|
|
info->name = xstrdup(fname + 2); /* skip "./" */
|
2009-05-18 11:08:04 +00:00
|
|
|
info->modname = xstrdup(filename2modname(fname, modname));
|
2008-09-13 14:59:38 +00:00
|
|
|
for (ptr = image; ptr < image + len - 10; ptr++) {
|
|
|
|
if (strncmp(ptr, "depends=", 8) == 0) {
|
|
|
|
char *u;
|
|
|
|
|
|
|
|
ptr += 8;
|
|
|
|
for (u = ptr; *u; u++)
|
|
|
|
if (*u == '-')
|
|
|
|
*u = '_';
|
|
|
|
ptr += string_to_llist(ptr, &info->dependencies, ",");
|
2009-05-18 11:08:04 +00:00
|
|
|
} else if (ENABLE_FEATURE_MODUTILS_ALIAS
|
|
|
|
&& strncmp(ptr, "alias=", 6) == 0
|
|
|
|
) {
|
2008-09-13 14:59:38 +00:00
|
|
|
llist_add_to(&info->aliases, xstrdup(ptr + 6));
|
|
|
|
ptr += strlen(ptr);
|
2009-05-18 11:08:04 +00:00
|
|
|
} else if (ENABLE_FEATURE_MODUTILS_SYMBOLS
|
|
|
|
&& strncmp(ptr, "__ksymtab_", 10) == 0
|
|
|
|
) {
|
2008-09-13 14:59:38 +00:00
|
|
|
ptr += 10;
|
2010-01-28 01:24:24 +00:00
|
|
|
if (strncmp(ptr, "gpl", 3) == 0
|
|
|
|
|| strcmp(ptr, "strings") == 0
|
|
|
|
) {
|
2008-09-13 14:59:38 +00:00
|
|
|
continue;
|
2010-01-28 01:24:24 +00:00
|
|
|
}
|
2008-09-13 14:59:38 +00:00
|
|
|
llist_add_to(&info->symbols, xstrdup(ptr));
|
|
|
|
ptr += strlen(ptr);
|
2008-06-02 18:59:16 +00:00
|
|
|
}
|
2008-09-13 14:59:38 +00:00
|
|
|
}
|
|
|
|
free(image);
|
|
|
|
|
|
|
|
return TRUE;
|
2008-05-26 12:01:49 +00:00
|
|
|
}
|
|
|
|
|
2008-09-13 14:59:38 +00:00
|
|
|
static module_info *find_module(module_info *modules, const char *modname)
|
|
|
|
{
|
|
|
|
module_info *m;
|
2008-05-28 14:20:20 +00:00
|
|
|
|
2008-09-13 14:59:38 +00:00
|
|
|
for (m = modules; m != NULL; m = m->next)
|
|
|
|
if (strcmp(m->modname, modname) == 0)
|
|
|
|
return m;
|
|
|
|
return NULL;
|
|
|
|
}
|
2008-06-02 18:59:16 +00:00
|
|
|
|
2008-09-13 14:59:38 +00:00
|
|
|
static void order_dep_list(module_info *modules, module_info *start,
|
|
|
|
llist_t *add)
|
|
|
|
{
|
|
|
|
module_info *m;
|
|
|
|
llist_t *n;
|
|
|
|
|
|
|
|
for (n = add; n != NULL; n = n->link) {
|
|
|
|
m = find_module(modules, n->data);
|
|
|
|
if (m == NULL)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
/* unlink current entry */
|
|
|
|
m->dnext->dprev = m->dprev;
|
|
|
|
m->dprev->dnext = m->dnext;
|
|
|
|
|
|
|
|
/* and add it to tail */
|
|
|
|
m->dnext = start;
|
|
|
|
m->dprev = start->dprev;
|
|
|
|
start->dprev->dnext = m;
|
|
|
|
start->dprev = m;
|
|
|
|
|
|
|
|
/* recurse */
|
|
|
|
order_dep_list(modules, start, m->dependencies);
|
2008-06-02 18:59:16 +00:00
|
|
|
}
|
2008-05-26 12:01:49 +00:00
|
|
|
}
|
|
|
|
|
2009-01-12 22:12:22 +00:00
|
|
|
static void xfreopen_write(const char *file, FILE *f)
|
|
|
|
{
|
|
|
|
if (freopen(file, "w", f) == NULL)
|
|
|
|
bb_perror_msg_and_die("can't open '%s'", file);
|
|
|
|
}
|
|
|
|
|
2010-07-18 15:41:17 +00:00
|
|
|
/* Usage:
|
|
|
|
* [-aAenv] [-C FILE or DIR] [-b BASE] [-F System.map] [VERSION] [MODFILES]...
|
|
|
|
* -a --all
|
|
|
|
* Probe all modules. Default if no MODFILES.
|
|
|
|
* -A --quick
|
|
|
|
* Check modules.dep's mtime against module files' mtimes.
|
|
|
|
* -b --basedir BASE
|
|
|
|
* Use $BASE/lib/modules/VERSION
|
|
|
|
* -C --config FILE or DIR
|
|
|
|
* Path to /etc/depmod.conf or /etc/depmod.d/
|
|
|
|
* -e --errsyms
|
|
|
|
* When combined with the -F option, this reports any symbols which
|
|
|
|
* which are not supplied by other modules or kernel.
|
|
|
|
* -F --filesyms System.map
|
|
|
|
* -n --dry-run
|
|
|
|
* Print modules.dep etc to standard output
|
|
|
|
* -v --verbose
|
|
|
|
* Print to stdout all the symbols each module depends on
|
|
|
|
* and the module's file name which provides that symbol.
|
|
|
|
* -r No-op
|
|
|
|
*
|
|
|
|
* So far we only support: [-rn] [-b BASE] [VERSION] [MODFILES]...
|
|
|
|
* -aAeF are accepted but ignored. -vC are not accepted.
|
|
|
|
*/
|
|
|
|
enum {
|
|
|
|
//OPT_a = (1 << 0), /* All modules, ignore mods in argv */
|
|
|
|
//OPT_A = (1 << 1), /* Only emit .ko that are newer than modules.dep file */
|
|
|
|
OPT_b = (1 << 2), /* base directory when modules are in staging area */
|
|
|
|
//OPT_e = (1 << 3), /* with -F, print unresolved symbols */
|
|
|
|
//OPT_F = (1 << 4), /* System.map that contains the symbols */
|
|
|
|
OPT_n = (1 << 5), /* dry-run, print to stdout only */
|
|
|
|
OPT_r = (1 << 6) /* Compat dummy. Linux Makefile uses it */
|
|
|
|
};
|
|
|
|
|
2008-05-26 12:01:49 +00:00
|
|
|
int depmod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
2008-07-05 09:18:54 +00:00
|
|
|
int depmod_main(int argc UNUSED_PARAM, char **argv)
|
2008-05-26 12:01:49 +00:00
|
|
|
{
|
2010-07-18 15:41:17 +00:00
|
|
|
module_info *modules, *m, *dep;
|
2009-01-12 22:12:22 +00:00
|
|
|
const char *moddir_base = "/";
|
|
|
|
char *moddir, *version;
|
|
|
|
struct utsname uts;
|
2008-09-13 14:59:38 +00:00
|
|
|
int tmp;
|
2008-05-26 12:01:49 +00:00
|
|
|
|
2009-02-19 01:25:42 +00:00
|
|
|
getopt32(argv, "aAb:eF:nr", &moddir_base, NULL);
|
2008-05-26 17:04:01 +00:00
|
|
|
argv += optind;
|
2008-05-28 10:35:51 +00:00
|
|
|
|
2008-09-13 14:59:38 +00:00
|
|
|
/* goto modules location */
|
2009-01-12 22:12:22 +00:00
|
|
|
xchdir(moddir_base);
|
2008-09-13 14:59:38 +00:00
|
|
|
|
|
|
|
/* If a version is provided, then that kernel version's module directory
|
2008-06-02 13:28:47 +00:00
|
|
|
* is used, rather than the current kernel version (as returned by
|
|
|
|
* "uname -r"). */
|
2010-07-18 15:41:17 +00:00
|
|
|
if (*argv && sscanf(*argv, "%u.%u.%u", &tmp, &tmp, &tmp) == 3) {
|
2009-01-12 22:12:22 +00:00
|
|
|
version = *argv++;
|
2008-05-26 21:33:05 +00:00
|
|
|
} else {
|
2008-09-13 14:59:38 +00:00
|
|
|
uname(&uts);
|
2009-01-12 22:12:22 +00:00
|
|
|
version = uts.release;
|
2008-05-26 17:04:01 +00:00
|
|
|
}
|
2009-01-12 22:12:22 +00:00
|
|
|
moddir = concat_path_file(&CONFIG_DEFAULT_MODULES_DIR[1], version);
|
2010-07-18 15:41:17 +00:00
|
|
|
xchdir(moddir);
|
|
|
|
if (ENABLE_FEATURE_CLEAN_UP)
|
|
|
|
free(moddir);
|
2008-05-26 21:33:05 +00:00
|
|
|
|
2008-09-13 14:59:38 +00:00
|
|
|
/* Scan modules */
|
2010-07-18 15:41:17 +00:00
|
|
|
modules = NULL;
|
2009-01-12 22:12:22 +00:00
|
|
|
if (*argv) {
|
|
|
|
do {
|
2010-07-18 15:41:17 +00:00
|
|
|
parse_module(*argv, /*sb (unused):*/ NULL, &modules, 0);
|
|
|
|
} while (*++argv);
|
2009-01-12 22:12:22 +00:00
|
|
|
} else {
|
2010-07-18 15:41:17 +00:00
|
|
|
recursive_action(".", ACTION_RECURSE,
|
2009-01-12 22:12:22 +00:00
|
|
|
parse_module, NULL, &modules, 0);
|
|
|
|
}
|
|
|
|
|
2008-09-13 14:59:38 +00:00
|
|
|
/* Generate dependency and alias files */
|
2010-07-18 15:41:17 +00:00
|
|
|
if (!(option_mask32 & OPT_n))
|
2009-01-12 22:12:22 +00:00
|
|
|
xfreopen_write(CONFIG_DEFAULT_DEPMOD_FILE, stdout);
|
2008-09-13 14:59:38 +00:00
|
|
|
for (m = modules; m != NULL; m = m->next) {
|
|
|
|
printf("%s:", m->name);
|
|
|
|
|
|
|
|
order_dep_list(modules, m, m->dependencies);
|
|
|
|
while (m->dnext != m) {
|
|
|
|
dep = m->dnext;
|
|
|
|
printf(" %s", dep->name);
|
|
|
|
|
|
|
|
/* unlink current entry */
|
|
|
|
dep->dnext->dprev = dep->dprev;
|
|
|
|
dep->dprev->dnext = dep->dnext;
|
|
|
|
dep->dnext = dep->dprev = dep;
|
2008-05-26 12:01:49 +00:00
|
|
|
}
|
2009-01-12 22:12:22 +00:00
|
|
|
bb_putchar('\n');
|
2008-06-02 18:59:16 +00:00
|
|
|
}
|
|
|
|
|
2008-09-13 14:59:38 +00:00
|
|
|
#if ENABLE_FEATURE_MODUTILS_ALIAS
|
2010-07-18 15:41:17 +00:00
|
|
|
if (!(option_mask32 & OPT_n))
|
2009-01-12 22:12:22 +00:00
|
|
|
xfreopen_write("modules.alias", stdout);
|
2008-09-13 14:59:38 +00:00
|
|
|
for (m = modules; m != NULL; m = m->next) {
|
2009-05-18 11:08:04 +00:00
|
|
|
const char *fname = bb_basename(m->name);
|
|
|
|
int fnlen = strchrnul(fname, '.') - fname;
|
2008-09-13 14:59:38 +00:00
|
|
|
while (m->aliases) {
|
2009-05-18 11:08:04 +00:00
|
|
|
/* Last word can well be m->modname instead,
|
|
|
|
* but depmod from module-init-tools 3.4
|
|
|
|
* uses module basename, i.e., no s/-/_/g.
|
|
|
|
* (pathname and .ko.* are still stripped)
|
|
|
|
* Mimicking that... */
|
|
|
|
printf("alias %s %.*s\n",
|
2008-09-13 14:59:38 +00:00
|
|
|
(char*)llist_pop(&m->aliases),
|
2009-05-18 11:08:04 +00:00
|
|
|
fnlen, fname);
|
2008-06-02 13:28:47 +00:00
|
|
|
}
|
|
|
|
}
|
2008-06-02 18:59:16 +00:00
|
|
|
#endif
|
2008-09-13 14:59:38 +00:00
|
|
|
#if ENABLE_FEATURE_MODUTILS_SYMBOLS
|
2010-07-18 15:41:17 +00:00
|
|
|
if (!(option_mask32 & OPT_n))
|
2009-01-12 22:12:22 +00:00
|
|
|
xfreopen_write("modules.symbols", stdout);
|
2008-09-13 14:59:38 +00:00
|
|
|
for (m = modules; m != NULL; m = m->next) {
|
2009-05-18 11:08:04 +00:00
|
|
|
const char *fname = bb_basename(m->name);
|
|
|
|
int fnlen = strchrnul(fname, '.') - fname;
|
2008-09-13 14:59:38 +00:00
|
|
|
while (m->symbols) {
|
2009-05-18 11:08:04 +00:00
|
|
|
printf("alias symbol:%s %.*s\n",
|
2008-09-13 14:59:38 +00:00
|
|
|
(char*)llist_pop(&m->symbols),
|
2009-05-18 11:08:04 +00:00
|
|
|
fnlen, fname);
|
2008-06-02 18:59:16 +00:00
|
|
|
}
|
2008-06-02 13:28:47 +00:00
|
|
|
}
|
2008-09-13 14:59:38 +00:00
|
|
|
#endif
|
2008-06-02 13:28:47 +00:00
|
|
|
|
2008-05-26 13:30:41 +00:00
|
|
|
if (ENABLE_FEATURE_CLEAN_UP) {
|
2008-09-13 14:59:38 +00:00
|
|
|
while (modules) {
|
|
|
|
module_info *old = modules;
|
|
|
|
modules = modules->next;
|
2008-06-02 13:28:47 +00:00
|
|
|
free(old->name);
|
2008-09-13 14:59:38 +00:00
|
|
|
free(old->modname);
|
2008-06-02 13:28:47 +00:00
|
|
|
free(old);
|
|
|
|
}
|
2008-05-26 13:30:41 +00:00
|
|
|
}
|
2008-09-13 14:59:38 +00:00
|
|
|
|
|
|
|
return EXIT_SUCCESS;
|
2008-05-26 12:01:49 +00:00
|
|
|
}
|