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
|
|
|
*
|
|
|
|
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
|
|
|
|
*/
|
|
|
|
|
|
|
|
#undef _GNU_SOURCE
|
|
|
|
#define _GNU_SOURCE
|
|
|
|
#include <libbb.h>
|
|
|
|
#include <sys/utsname.h> /* uname() */
|
2008-09-13 14:59:38 +00:00
|
|
|
#include "modutils.h"
|
|
|
|
|
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;
|
|
|
|
|
|
|
|
enum {
|
|
|
|
ARG_a = (1<<0), /* All modules, ignore mods in argv */
|
|
|
|
ARG_A = (1<<1), /* Only emit .ko that are newer than modules.dep file */
|
|
|
|
ARG_b = (1<<2), /* not /lib/modules/$(uname -r)/ but this base-dir */
|
|
|
|
ARG_e = (1<<3), /* with -F, print unresolved symbols */
|
|
|
|
ARG_F = (1<<4), /* System.map that contains the symbols */
|
|
|
|
ARG_n = (1<<5) /* dry-run, print to stdout only */
|
2008-05-26 12:01:49 +00:00
|
|
|
};
|
|
|
|
|
2008-09-13 14:59:38 +00:00
|
|
|
static int FAST_FUNC parse_module(const char *fname, struct stat *sb,
|
|
|
|
void *data, int UNUSED_PARAM depth)
|
2008-05-26 12:01:49 +00:00
|
|
|
{
|
2008-09-13 14:59:38 +00:00
|
|
|
module_info **first = (module_info **) data;
|
|
|
|
char *image, *ptr;
|
|
|
|
module_info *info;
|
|
|
|
size_t len = sb->st_size;
|
|
|
|
|
|
|
|
if (strrstr(fname, ".ko") == NULL)
|
|
|
|
return TRUE;
|
|
|
|
|
|
|
|
image = (char *) xmalloc_open_zipped_read_close(fname, &len);
|
|
|
|
info = xzalloc(sizeof(module_info));
|
|
|
|
|
|
|
|
info->next = *first;
|
|
|
|
*first = info;
|
|
|
|
|
|
|
|
info->dnext = info->dprev = info;
|
|
|
|
info->name = xstrdup(fname);
|
|
|
|
info->modname = filename2modname(fname, NULL);
|
|
|
|
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, ",");
|
|
|
|
} else if (ENABLE_FEATURE_MODUTILS_ALIAS &&
|
|
|
|
strncmp(ptr, "alias=", 6) == 0) {
|
|
|
|
llist_add_to(&info->aliases, xstrdup(ptr + 6));
|
|
|
|
ptr += strlen(ptr);
|
|
|
|
} else if (ENABLE_FEATURE_MODUTILS_SYMBOLS &&
|
|
|
|
strncmp(ptr, "__ksymtab_", 10) == 0) {
|
|
|
|
ptr += 10;
|
|
|
|
if (strncmp(ptr, "gpl", 3) == 0 ||
|
|
|
|
strcmp(ptr, "strings") == 0)
|
|
|
|
continue;
|
|
|
|
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
|
|
|
}
|
|
|
|
|
|
|
|
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
|
|
|
{
|
2008-09-13 14:59:38 +00:00
|
|
|
module_info *modules = NULL, *m, *dep;
|
|
|
|
char *moddir_base = (char *)CONFIG_DEFAULT_MODULES_DIR;
|
|
|
|
int tmp;
|
2008-05-26 12:01:49 +00:00
|
|
|
|
2008-09-13 14:59:38 +00:00
|
|
|
getopt32(argv, "aAb:eF:n", &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 */
|
|
|
|
|
|
|
|
/* 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"). */
|
2008-09-13 14:59:38 +00:00
|
|
|
xchdir(moddir_base);
|
|
|
|
if (*argv && (sscanf(*argv, "%d.%d.%d", &tmp, &tmp, &tmp) == 3)) {
|
|
|
|
xchdir(*argv++);
|
2008-05-26 21:33:05 +00:00
|
|
|
} else {
|
2008-05-26 17:04:01 +00:00
|
|
|
struct utsname uts;
|
2008-09-13 14:59:38 +00:00
|
|
|
uname(&uts);
|
|
|
|
xchdir(uts.release);
|
2008-05-26 17:04:01 +00:00
|
|
|
}
|
2008-05-28 14:20:20 +00:00
|
|
|
/* If no modules are given on the command-line, -a is on per default. */
|
2008-05-26 21:33:05 +00:00
|
|
|
option_mask32 |= *argv == NULL;
|
|
|
|
|
2008-09-13 14:59:38 +00:00
|
|
|
/* Scan modules */
|
|
|
|
moddir_base = xrealloc_getcwd_or_warn(NULL);
|
2008-05-26 12:01:49 +00:00
|
|
|
do {
|
2008-09-13 14:59:38 +00:00
|
|
|
recursive_action((option_mask32 & ARG_a) ? moddir_base : *argv,
|
|
|
|
ACTION_RECURSE, parse_module, NULL, &modules, 0);
|
|
|
|
} while (!(option_mask32 & ARG_a) && *(++argv));
|
|
|
|
if (ENABLE_FEATURE_CLEAN_UP)
|
|
|
|
free(moddir_base);
|
|
|
|
|
|
|
|
/* Generate dependency and alias files */
|
|
|
|
if (!(option_mask32 & ARG_n))
|
|
|
|
freopen(CONFIG_DEFAULT_DEPMOD_FILE, "w", stdout);
|
|
|
|
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
|
|
|
}
|
2008-09-13 14:59:38 +00:00
|
|
|
puts("");
|
2008-06-02 18:59:16 +00:00
|
|
|
}
|
|
|
|
|
2008-09-13 14:59:38 +00:00
|
|
|
#if ENABLE_FEATURE_MODUTILS_ALIAS
|
|
|
|
if (!(option_mask32 & ARG_n))
|
|
|
|
freopen("modules.alias", "w", stdout);
|
|
|
|
for (m = modules; m != NULL; m = m->next) {
|
|
|
|
while (m->aliases) {
|
|
|
|
printf("alias %s %s\n",
|
|
|
|
(char*)llist_pop(&m->aliases),
|
|
|
|
m->modname);
|
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
|
|
|
|
if (!(option_mask32 & ARG_n))
|
|
|
|
freopen("modules.symbols", "w", stdout);
|
|
|
|
for (m = modules; m != NULL; m = m->next) {
|
|
|
|
while (m->symbols) {
|
|
|
|
printf("alias symbol:%s %s\n",
|
|
|
|
(char*)llist_pop(&m->symbols),
|
|
|
|
m->modname);
|
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
|
|
|
}
|