mirror of
https://github.com/topjohnwu/ndk-busybox.git
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177 lines
4.7 KiB
C
177 lines
4.7 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Mini lsmod implementation for busybox
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*
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* Copyright (C) 1999,2000 by Lineo, inc. and Erik Andersen
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* Copyright (C) 1999,2000,2001 by Erik Andersen <andersee@debian.org>
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*
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* Modified by Alcove, Julien Gaulmin <julien.gaulmin@alcove.fr> and
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* Nicolas Ferre <nicolas.ferre@alcove.fr> to support pre 2.1 kernels
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* (which lack the query_module() interface).
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <stddef.h>
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#include <errno.h>
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#include <unistd.h>
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#include <dirent.h>
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#include <ctype.h>
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#include <assert.h>
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#include <getopt.h>
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#include <sys/utsname.h>
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#include <sys/file.h>
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#include "busybox.h"
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#ifndef CONFIG_FEATURE_CHECK_TAINTED_MODULE
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static inline void check_tainted(void) { printf("\n"); }
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#else
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#define TAINT_FILENAME "/proc/sys/kernel/tainted"
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#define TAINT_PROPRIETORY_MODULE (1<<0)
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#define TAINT_FORCED_MODULE (1<<1)
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#define TAINT_UNSAFE_SMP (1<<2)
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static void check_tainted(void)
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{
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int tainted;
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FILE *f;
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tainted = 0;
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if ((f = fopen(TAINT_FILENAME, "r"))) {
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fscanf(f, "%d", &tainted);
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fclose(f);
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}
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if (f && tainted) {
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printf(" Tainted: %c%c%c\n",
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tainted & TAINT_PROPRIETORY_MODULE ? 'P' : 'G',
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tainted & TAINT_FORCED_MODULE ? 'F' : ' ',
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tainted & TAINT_UNSAFE_SMP ? 'S' : ' ');
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}
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else {
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printf(" Not tainted\n");
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}
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printf("\n");
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}
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#endif
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#ifdef CONFIG_FEATURE_QUERY_MODULE_INTERFACE
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struct module_info
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{
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unsigned long addr;
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unsigned long size;
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unsigned long flags;
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long usecount;
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};
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int query_module(const char *name, int which, void *buf, size_t bufsize, size_t *ret);
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/* Values for query_module's which. */
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static const int QM_MODULES = 1;
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static const int QM_DEPS = 2;
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static const int QM_REFS = 3;
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static const int QM_SYMBOLS = 4;
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static const int QM_INFO = 5;
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/* Bits of module.flags. */
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static const int NEW_MOD_RUNNING = 1;
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static const int NEW_MOD_DELETED = 2;
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static const int NEW_MOD_AUTOCLEAN = 4;
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static const int NEW_MOD_VISITED = 8;
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static const int NEW_MOD_USED_ONCE = 16;
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static const int NEW_MOD_INITIALIZING = 64;
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extern int lsmod_main(int argc, char **argv)
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{
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struct module_info info;
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char *module_names, *mn, *deps, *dn;
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size_t bufsize, depsize, nmod, count, i, j;
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module_names = xmalloc(bufsize = 256);
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if (my_query_module(NULL, QM_MODULES, (void **)&module_names, &bufsize,
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&nmod)) {
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bb_perror_msg_and_die("QM_MODULES");
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}
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deps = xmalloc(depsize = 256);
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printf("Module Size Used by");
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check_tainted();
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for (i = 0, mn = module_names; i < nmod; mn += strlen(mn) + 1, i++) {
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if (query_module(mn, QM_INFO, &info, sizeof(info), &count)) {
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if (errno == ENOENT) {
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/* The module was removed out from underneath us. */
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continue;
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}
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/* else choke */
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bb_perror_msg_and_die("module %s: QM_INFO", mn);
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}
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if (my_query_module(mn, QM_REFS, (void **)&deps, &depsize, &count)) {
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if (errno == ENOENT) {
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/* The module was removed out from underneath us. */
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continue;
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}
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bb_perror_msg_and_die("module %s: QM_REFS", mn);
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}
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printf("%-20s%8lu%4ld", mn, info.size, info.usecount);
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if (info.flags & NEW_MOD_DELETED)
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printf(" (deleted)");
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else if (info.flags & NEW_MOD_INITIALIZING)
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printf(" (initializing)");
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else if (!(info.flags & NEW_MOD_RUNNING))
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printf(" (uninitialized)");
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else {
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if (info.flags & NEW_MOD_AUTOCLEAN)
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printf(" (autoclean) ");
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if (!(info.flags & NEW_MOD_USED_ONCE))
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printf(" (unused)");
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}
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if (count) printf(" [");
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for (j = 0, dn = deps; j < count; dn += strlen(dn) + 1, j++) {
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printf("%s%s", dn, (j==count-1)? "":" ");
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}
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if (count) printf("]");
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printf("\n");
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}
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#ifdef CONFIG_FEATURE_CLEAN_UP
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free(module_names);
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#endif
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return( 0);
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}
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#else /* CONFIG_FEATURE_QUERY_MODULE_INTERFACE */
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extern int lsmod_main(int argc, char **argv)
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{
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printf("Module Size Used by");
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check_tainted();
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if (bb_xprint_file_by_name("/proc/modules") < 0) {
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return 0;
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}
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return 1;
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}
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#endif /* CONFIG_FEATURE_QUERY_MODULE_INTERFACE */
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