mirror of
https://github.com/sheumann/hush.git
synced 2024-08-27 18:29:23 +00:00
function old new delta packed_usage 28706 28623 -83 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
167 lines
3.9 KiB
C
167 lines
3.9 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* modinfo - retrieve module info
|
|
* Copyright (c) 2008 Pascal Bellard
|
|
*
|
|
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
|
|
*/
|
|
|
|
//applet:IF_MODINFO(APPLET(modinfo, BB_DIR_SBIN, BB_SUID_DROP))
|
|
|
|
//kbuild:lib-$(CONFIG_MODINFO) += modinfo.o modutils.o
|
|
|
|
//config:config MODINFO
|
|
//config: bool "modinfo"
|
|
//config: default y
|
|
//config: help
|
|
//config: Show information about a Linux Kernel module
|
|
|
|
#include <fnmatch.h>
|
|
#include <sys/utsname.h> /* uname() */
|
|
#include "libbb.h"
|
|
#include "modutils.h"
|
|
|
|
|
|
enum {
|
|
OPT_TAGS = (1 << 8) - 1,
|
|
OPT_F = (1 << 8), /* field name */
|
|
OPT_0 = (1 << 9), /* \0 as separator */
|
|
};
|
|
|
|
struct modinfo_env {
|
|
char *field;
|
|
int tags;
|
|
};
|
|
|
|
static int display(const char *data, const char *pattern, int flag)
|
|
{
|
|
if (flag) {
|
|
int n = printf("%s:", pattern);
|
|
while (n++ < 16)
|
|
bb_putchar(' ');
|
|
}
|
|
return printf("%s%c", data, (option_mask32 & OPT_0) ? '\0' : '\n');
|
|
}
|
|
|
|
static void modinfo(const char *path, const char *version,
|
|
const struct modinfo_env *env)
|
|
{
|
|
static const char *const shortcuts[] = {
|
|
"filename",
|
|
"description",
|
|
"author",
|
|
"license",
|
|
"vermagic",
|
|
"parm",
|
|
"firmware",
|
|
"depends",
|
|
};
|
|
size_t len;
|
|
int j, length;
|
|
char *ptr, *the_module;
|
|
const char *field = env->field;
|
|
int tags = env->tags;
|
|
|
|
if (tags & 1) { /* filename */
|
|
display(path, shortcuts[0], 1 != tags);
|
|
}
|
|
|
|
len = MAXINT(ssize_t);
|
|
the_module = xmalloc_open_zipped_read_close(path, &len);
|
|
if (!the_module) {
|
|
if (path[0] == '/')
|
|
return;
|
|
/* Newer depmod puts relative paths in modules.dep */
|
|
path = xasprintf("%s/%s/%s", CONFIG_DEFAULT_MODULES_DIR, version, path);
|
|
the_module = xmalloc_open_zipped_read_close(path, &len);
|
|
free((char*)path);
|
|
if (!the_module)
|
|
return;
|
|
}
|
|
|
|
if (field)
|
|
tags |= OPT_F;
|
|
for (j = 1; (1<<j) & (OPT_TAGS + OPT_F); j++) {
|
|
const char *pattern;
|
|
|
|
if (!((1<<j) & tags))
|
|
continue;
|
|
pattern = field;
|
|
if ((1<<j) & OPT_TAGS)
|
|
pattern = shortcuts[j];
|
|
length = strlen(pattern);
|
|
ptr = the_module;
|
|
while (1) {
|
|
ptr = memchr(ptr, *pattern, len - (ptr - (char*)the_module));
|
|
if (ptr == NULL) /* no occurance left, done */
|
|
break;
|
|
if (strncmp(ptr, pattern, length) == 0 && ptr[length] == '=') {
|
|
ptr += length + 1;
|
|
ptr += display(ptr, pattern, (1<<j) != tags);
|
|
}
|
|
++ptr;
|
|
}
|
|
}
|
|
free(the_module);
|
|
}
|
|
|
|
//usage:#define modinfo_trivial_usage
|
|
//usage: "[-adlp0] [-F keyword] MODULE"
|
|
//usage:#define modinfo_full_usage "\n\n"
|
|
//usage: " -a Shortcut for '-F author'"
|
|
//usage: "\n -d Shortcut for '-F description'"
|
|
//usage: "\n -l Shortcut for '-F license'"
|
|
//usage: "\n -p Shortcut for '-F parm'"
|
|
//usage: "\n -F keyword Keyword to look for"
|
|
//usage: "\n -0 Separate output with NULs"
|
|
//usage:#define modinfo_example_usage
|
|
//usage: "$ modinfo -F vermagic loop\n"
|
|
|
|
int modinfo_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
|
int modinfo_main(int argc UNUSED_PARAM, char **argv)
|
|
{
|
|
struct modinfo_env env;
|
|
char name[MODULE_NAME_LEN];
|
|
struct utsname uts;
|
|
parser_t *parser;
|
|
char *colon, *tokens[2];
|
|
unsigned opts;
|
|
unsigned i;
|
|
|
|
env.field = NULL;
|
|
opt_complementary = "-1"; /* minimum one param */
|
|
opts = getopt32(argv, "fdalvpF:0", &env.field);
|
|
env.tags = opts & OPT_TAGS ? opts & OPT_TAGS : OPT_TAGS;
|
|
argv += optind;
|
|
|
|
uname(&uts);
|
|
parser = config_open2(
|
|
xasprintf("%s/%s/%s", CONFIG_DEFAULT_MODULES_DIR, uts.release, CONFIG_DEFAULT_DEPMOD_FILE),
|
|
xfopen_for_read
|
|
);
|
|
|
|
while (config_read(parser, tokens, 2, 1, "# \t", PARSE_NORMAL)) {
|
|
colon = last_char_is(tokens[0], ':');
|
|
if (colon == NULL)
|
|
continue;
|
|
*colon = '\0';
|
|
filename2modname(tokens[0], name);
|
|
for (i = 0; argv[i]; i++) {
|
|
if (fnmatch(argv[i], name, 0) == 0) {
|
|
modinfo(tokens[0], uts.release, &env);
|
|
argv[i] = (char *) "";
|
|
}
|
|
}
|
|
}
|
|
if (ENABLE_FEATURE_CLEAN_UP)
|
|
config_close(parser);
|
|
|
|
for (i = 0; argv[i]; i++) {
|
|
if (argv[i][0]) {
|
|
modinfo(argv[i], uts.release, &env);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|