diff options
Diffstat (limited to 'release/src/router/busybox/modutils/lsmod.c')
| -rw-r--r-- | release/src/router/busybox/modutils/lsmod.c | 198 |
1 files changed, 51 insertions, 147 deletions
diff --git a/release/src/router/busybox/modutils/lsmod.c b/release/src/router/busybox/modutils/lsmod.c index f1eebfc9..87dd1fcb 100644 --- a/release/src/router/busybox/modutils/lsmod.c +++ b/release/src/router/busybox/modutils/lsmod.c @@ -2,174 +2,78 @@ /* * Mini lsmod implementation for busybox * - * Copyright (C) 1999-2003 by Erik Andersen <andersen@codepoet.org> - * - * Modified by Alcove, Julien Gaulmin <julien.gaulmin@alcove.fr> and - * Nicolas Ferre <nicolas.ferre@alcove.fr> to support pre 2.1 kernels - * (which lack the query_module() interface). - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org> + * Copyright (C) 2008 by Vladimir Dronnikov <dronnikov@gmail.com> * + * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. */ -#include <stdlib.h> -#include <stdio.h> -#include <string.h> -#include <stddef.h> -#include <errno.h> -#include <unistd.h> -#include <dirent.h> -#include <ctype.h> -#include <assert.h> -#include <getopt.h> -#include <sys/utsname.h> -#include <sys/file.h> -#include "busybox.h" - +#include "libbb.h" -#ifndef CONFIG_FEATURE_CHECK_TAINTED_MODULE -static inline void check_tainted(void) { printf("\n"); } -#else -#define TAINT_FILENAME "/proc/sys/kernel/tainted" -#define TAINT_PROPRIETORY_MODULE (1<<0) -#define TAINT_FORCED_MODULE (1<<1) -#define TAINT_UNSAFE_SMP (1<<2) +#if ENABLE_FEATURE_CHECK_TAINTED_MODULE +enum { + TAINT_PROPRIETORY_MODULE = (1 << 0), + TAINT_FORCED_MODULE = (1 << 1), + TAINT_UNSAFE_SMP = (1 << 2), +}; static void check_tainted(void) { - int tainted; - FILE *f; - - tainted = 0; - if ((f = fopen(TAINT_FILENAME, "r"))) { - fscanf(f, "%d", &tainted); - fclose(f); + int tainted = 0; + char *buf = xmalloc_open_read_close("/proc/sys/kernel/tainted", NULL); + if (buf) { + tainted = atoi(buf); + if (ENABLE_FEATURE_CLEAN_UP) + free(buf); } - if (f && tainted) { + + if (tainted) { printf(" Tainted: %c%c%c\n", tainted & TAINT_PROPRIETORY_MODULE ? 'P' : 'G', tainted & TAINT_FORCED_MODULE ? 'F' : ' ', tainted & TAINT_UNSAFE_SMP ? 'S' : ' '); + } else { + puts(" Not tainted"); } - else { - printf(" Not tainted\n"); - } - printf("\n"); } +#else +static void check_tainted(void) { putchar('\n'); } #endif -#ifdef CONFIG_FEATURE_QUERY_MODULE_INTERFACE - -struct module_info -{ - unsigned long addr; - unsigned long size; - unsigned long flags; - long usecount; -}; - - -int query_module(const char *name, int which, void *buf, size_t bufsize, size_t *ret); - -/* Values for query_module's which. */ -static const int QM_MODULES = 1; -static const int QM_DEPS = 2; -static const int QM_REFS = 3; -static const int QM_SYMBOLS = 4; -static const int QM_INFO = 5; - -/* Bits of module.flags. */ -static const int NEW_MOD_RUNNING = 1; -static const int NEW_MOD_DELETED = 2; -static const int NEW_MOD_AUTOCLEAN = 4; -static const int NEW_MOD_VISITED = 8; -static const int NEW_MOD_USED_ONCE = 16; -static const int NEW_MOD_INITIALIZING = 64; - -extern int lsmod_main(int argc, char **argv) +int lsmod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; +int lsmod_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM) { - struct module_info info; - char *module_names, *mn, *deps, *dn; - size_t bufsize, depsize, nmod, count, i, j; - - module_names = xmalloc(bufsize = 256); - if (my_query_module(NULL, QM_MODULES, (void **)&module_names, &bufsize, - &nmod)) { - bb_perror_msg_and_die("QM_MODULES"); - } - - deps = xmalloc(depsize = 256); - printf("Module Size Used by"); +#if ENABLE_FEATURE_LSMOD_PRETTY_2_6_OUTPUT + char *token[4]; + parser_t *parser = config_open("/proc/modules"); + printf("%-24sSize Used by", "Module"); check_tainted(); - for (i = 0, mn = module_names; i < nmod; mn += strlen(mn) + 1, i++) { - if (query_module(mn, QM_INFO, &info, sizeof(info), &count)) { - if (errno == ENOENT) { - /* The module was removed out from underneath us. */ - continue; - } - /* else choke */ - bb_perror_msg_and_die("module %s: QM_INFO", mn); - } - if (my_query_module(mn, QM_REFS, (void **)&deps, &depsize, &count)) { - if (errno == ENOENT) { - /* The module was removed out from underneath us. */ - continue; - } - bb_perror_msg_and_die("module %s: QM_REFS", mn); - } - printf("%-20s%8lu%4ld", mn, info.size, info.usecount); - if (info.flags & NEW_MOD_DELETED) - printf(" (deleted)"); - else if (info.flags & NEW_MOD_INITIALIZING) - printf(" (initializing)"); - else if (!(info.flags & NEW_MOD_RUNNING)) - printf(" (uninitialized)"); - else { - if (info.flags & NEW_MOD_AUTOCLEAN) - printf(" (autoclean) "); - if (!(info.flags & NEW_MOD_USED_ONCE)) - printf(" (unused)"); + if (ENABLE_FEATURE_2_4_MODULES + && get_linux_version_code() < KERNEL_VERSION(2,6,0) + ) { + while (config_read(parser, token, 4, 3, "# \t", PARSE_NORMAL)) { + if (token[3] != NULL && token[3][0] == '[') { + token[3]++; + token[3][strlen(token[3])-1] = '\0'; + } else + token[3] = (char *) ""; + printf("%-19s %8s %2s %s\n", token[0], token[1], token[2], token[3]); } - if (count) printf(" ["); - for (j = 0, dn = deps; j < count; dn += strlen(dn) + 1, j++) { - printf("%s%s", dn, (j==count-1)? "":" "); + } else { + while (config_read(parser, token, 4, 4, "# \t", PARSE_NORMAL & ~PARSE_GREEDY)) { + // N.B. token[3] is either '-' (module is not used by others) + // or comma-separated list ended by comma + // so trimming the trailing char is just what we need! + token[3][strlen(token[3])-1] = '\0'; + printf("%-19s %8s %2s %s\n", token[0], token[1], token[2], token[3]); } - if (count) printf("]"); - - printf("\n"); } - -#ifdef CONFIG_FEATURE_CLEAN_UP - free(module_names); -#endif - - return( 0); -} - -#else /* CONFIG_FEATURE_QUERY_MODULE_INTERFACE */ - -extern int lsmod_main(int argc, char **argv) -{ - printf("Module Size Used by"); + if (ENABLE_FEATURE_CLEAN_UP) + config_close(parser); +#else check_tainted(); - - if (bb_xprint_file_by_name("/proc/modules") < 0) { - return 0; - } - return 1; + xprint_and_close_file(xfopen_for_read("/proc/modules")); +#endif + return EXIT_SUCCESS; } - -#endif /* CONFIG_FEATURE_QUERY_MODULE_INTERFACE */ |