Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
Erik Andersen | 6f23cec | 1999-12-15 22:14:12 +0000 | [diff] [blame] | 2 | /* |
| 3 | * Mini lsmod implementation for busybox |
| 4 | * |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 5 | * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org> |
Erik Andersen | 6f23cec | 1999-12-15 22:14:12 +0000 | [diff] [blame] | 6 | * |
Eric Andersen | 21adca7 | 2000-12-06 18:18:26 +0000 | [diff] [blame] | 7 | * Modified by Alcove, Julien Gaulmin <julien.gaulmin@alcove.fr> and |
| 8 | * Nicolas Ferre <nicolas.ferre@alcove.fr> to support pre 2.1 kernels |
| 9 | * (which lack the query_module() interface). |
| 10 | * |
Erik Andersen | 6f23cec | 1999-12-15 22:14:12 +0000 | [diff] [blame] | 11 | * This program is free software; you can redistribute it and/or modify |
| 12 | * it under the terms of the GNU General Public License as published by |
| 13 | * the Free Software Foundation; either version 2 of the License, or |
| 14 | * (at your option) any later version. |
| 15 | * |
| 16 | * This program is distributed in the hope that it will be useful, |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 19 | * General Public License for more details. |
| 20 | * |
| 21 | * You should have received a copy of the GNU General Public License |
| 22 | * along with this program; if not, write to the Free Software |
| 23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 24 | * |
| 25 | */ |
| 26 | |
Eric Andersen | be0dc0d | 2000-08-21 19:25:16 +0000 | [diff] [blame] | 27 | #include <stdlib.h> |
Erik Andersen | 6f23cec | 1999-12-15 22:14:12 +0000 | [diff] [blame] | 28 | #include <stdio.h> |
Eric Andersen | eba8ed7 | 2001-03-09 14:36:42 +0000 | [diff] [blame] | 29 | #include <string.h> |
Eric Andersen | be0dc0d | 2000-08-21 19:25:16 +0000 | [diff] [blame] | 30 | #include <stddef.h> |
| 31 | #include <errno.h> |
| 32 | #include <unistd.h> |
| 33 | #include <dirent.h> |
| 34 | #include <ctype.h> |
| 35 | #include <assert.h> |
| 36 | #include <getopt.h> |
| 37 | #include <sys/utsname.h> |
Eric Andersen | 21adca7 | 2000-12-06 18:18:26 +0000 | [diff] [blame] | 38 | #include <sys/file.h> |
Eric Andersen | cbe31da | 2001-02-20 06:14:08 +0000 | [diff] [blame] | 39 | #include "busybox.h" |
Eric Andersen | be0dc0d | 2000-08-21 19:25:16 +0000 | [diff] [blame] | 40 | |
| 41 | |
Eric Andersen | 71ae64b | 2002-10-10 04:20:21 +0000 | [diff] [blame] | 42 | #ifndef CONFIG_FEATURE_CHECK_TAINTED_MODULE |
| 43 | static inline void check_tainted(void) { printf("\n"); } |
| 44 | #else |
Eric Andersen | 166fa46 | 2002-09-16 05:30:24 +0000 | [diff] [blame] | 45 | #define TAINT_FILENAME "/proc/sys/kernel/tainted" |
| 46 | #define TAINT_PROPRIETORY_MODULE (1<<0) |
| 47 | #define TAINT_FORCED_MODULE (1<<1) |
| 48 | #define TAINT_UNSAFE_SMP (1<<2) |
| 49 | |
Eric Andersen | 71ae64b | 2002-10-10 04:20:21 +0000 | [diff] [blame] | 50 | static void check_tainted(void) |
Eric Andersen | 166fa46 | 2002-09-16 05:30:24 +0000 | [diff] [blame] | 51 | { |
| 52 | int tainted; |
| 53 | FILE *f; |
| 54 | |
| 55 | tainted = 0; |
| 56 | if ((f = fopen(TAINT_FILENAME, "r"))) { |
| 57 | fscanf(f, "%d", &tainted); |
| 58 | fclose(f); |
| 59 | } |
| 60 | if (f && tainted) { |
Eric Andersen | 5286494 | 2002-10-08 09:38:07 +0000 | [diff] [blame] | 61 | printf(" Tainted: %c%c%c\n", |
Eric Andersen | 166fa46 | 2002-09-16 05:30:24 +0000 | [diff] [blame] | 62 | tainted & TAINT_PROPRIETORY_MODULE ? 'P' : 'G', |
| 63 | tainted & TAINT_FORCED_MODULE ? 'F' : ' ', |
| 64 | tainted & TAINT_UNSAFE_SMP ? 'S' : ' '); |
| 65 | } |
| 66 | else { |
Eric Andersen | 5286494 | 2002-10-08 09:38:07 +0000 | [diff] [blame] | 67 | printf(" Not tainted\n"); |
Eric Andersen | 166fa46 | 2002-09-16 05:30:24 +0000 | [diff] [blame] | 68 | } |
| 69 | } |
Eric Andersen | 71ae64b | 2002-10-10 04:20:21 +0000 | [diff] [blame] | 70 | #endif |
Eric Andersen | 166fa46 | 2002-09-16 05:30:24 +0000 | [diff] [blame] | 71 | |
Eric Andersen | fcffa2c | 2002-04-06 05:17:57 +0000 | [diff] [blame] | 72 | #ifdef CONFIG_FEATURE_QUERY_MODULE_INTERFACE |
Eric Andersen | 21adca7 | 2000-12-06 18:18:26 +0000 | [diff] [blame] | 73 | |
Eric Andersen | be0dc0d | 2000-08-21 19:25:16 +0000 | [diff] [blame] | 74 | struct module_info |
| 75 | { |
| 76 | unsigned long addr; |
| 77 | unsigned long size; |
| 78 | unsigned long flags; |
| 79 | long usecount; |
| 80 | }; |
| 81 | |
| 82 | |
Eric Andersen | e76c3b0 | 2001-04-05 03:14:39 +0000 | [diff] [blame] | 83 | int query_module(const char *name, int which, void *buf, size_t bufsize, size_t *ret); |
Eric Andersen | be0dc0d | 2000-08-21 19:25:16 +0000 | [diff] [blame] | 84 | |
| 85 | /* Values for query_module's which. */ |
Mark Whitley | 59ab025 | 2001-01-23 22:30:04 +0000 | [diff] [blame] | 86 | static const int QM_MODULES = 1; |
| 87 | static const int QM_DEPS = 2; |
| 88 | static const int QM_REFS = 3; |
| 89 | static const int QM_SYMBOLS = 4; |
| 90 | static const int QM_INFO = 5; |
Eric Andersen | be0dc0d | 2000-08-21 19:25:16 +0000 | [diff] [blame] | 91 | |
Eric Andersen | de34e43 | 2000-09-10 16:16:00 +0000 | [diff] [blame] | 92 | /* Bits of module.flags. */ |
Mark Whitley | 59ab025 | 2001-01-23 22:30:04 +0000 | [diff] [blame] | 93 | static const int NEW_MOD_RUNNING = 1; |
| 94 | static const int NEW_MOD_DELETED = 2; |
| 95 | static const int NEW_MOD_AUTOCLEAN = 4; |
| 96 | static const int NEW_MOD_VISITED = 8; |
| 97 | static const int NEW_MOD_USED_ONCE = 16; |
| 98 | static const int NEW_MOD_INITIALIZING = 64; |
Erik Andersen | 6f23cec | 1999-12-15 22:14:12 +0000 | [diff] [blame] | 99 | |
Erik Andersen | 6f23cec | 1999-12-15 22:14:12 +0000 | [diff] [blame] | 100 | extern int lsmod_main(int argc, char **argv) |
| 101 | { |
Eric Andersen | be0dc0d | 2000-08-21 19:25:16 +0000 | [diff] [blame] | 102 | struct module_info info; |
| 103 | char *module_names, *mn, *deps, *dn; |
Matt Kraai | 0f50bca | 2001-04-13 14:40:15 +0000 | [diff] [blame] | 104 | size_t bufsize, depsize, nmod, count, i, j; |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 105 | |
Eric Andersen | be0dc0d | 2000-08-21 19:25:16 +0000 | [diff] [blame] | 106 | module_names = xmalloc(bufsize = 256); |
Matt Kraai | 0f50bca | 2001-04-13 14:40:15 +0000 | [diff] [blame] | 107 | if (my_query_module(NULL, QM_MODULES, (void **)&module_names, &bufsize, |
| 108 | &nmod)) { |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 109 | bb_perror_msg_and_die("QM_MODULES"); |
Eric Andersen | be0dc0d | 2000-08-21 19:25:16 +0000 | [diff] [blame] | 110 | } |
| 111 | |
Matt Kraai | 0f50bca | 2001-04-13 14:40:15 +0000 | [diff] [blame] | 112 | deps = xmalloc(depsize = 256); |
Eric Andersen | 166fa46 | 2002-09-16 05:30:24 +0000 | [diff] [blame] | 113 | printf("Module Size Used by"); |
| 114 | check_tainted(); |
Eric Andersen | 166fa46 | 2002-09-16 05:30:24 +0000 | [diff] [blame] | 115 | |
Eric Andersen | be0dc0d | 2000-08-21 19:25:16 +0000 | [diff] [blame] | 116 | for (i = 0, mn = module_names; i < nmod; mn += strlen(mn) + 1, i++) { |
| 117 | if (query_module(mn, QM_INFO, &info, sizeof(info), &count)) { |
| 118 | if (errno == ENOENT) { |
| 119 | /* The module was removed out from underneath us. */ |
| 120 | continue; |
| 121 | } |
| 122 | /* else choke */ |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 123 | bb_perror_msg_and_die("module %s: QM_INFO", mn); |
Eric Andersen | be0dc0d | 2000-08-21 19:25:16 +0000 | [diff] [blame] | 124 | } |
Matt Kraai | 0f50bca | 2001-04-13 14:40:15 +0000 | [diff] [blame] | 125 | if (my_query_module(mn, QM_REFS, (void **)&deps, &depsize, &count)) { |
Eric Andersen | be0dc0d | 2000-08-21 19:25:16 +0000 | [diff] [blame] | 126 | if (errno == ENOENT) { |
| 127 | /* The module was removed out from underneath us. */ |
| 128 | continue; |
| 129 | } |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 130 | bb_perror_msg_and_die("module %s: QM_REFS", mn); |
Eric Andersen | be0dc0d | 2000-08-21 19:25:16 +0000 | [diff] [blame] | 131 | } |
Eric Andersen | 31f9747 | 2002-10-18 22:14:07 +0000 | [diff] [blame] | 132 | printf("%-20s%8lu%4ld", mn, info.size, info.usecount); |
Eric Andersen | de34e43 | 2000-09-10 16:16:00 +0000 | [diff] [blame] | 133 | if (info.flags & NEW_MOD_DELETED) |
Eric Andersen | 31f9747 | 2002-10-18 22:14:07 +0000 | [diff] [blame] | 134 | printf(" (deleted)"); |
Eric Andersen | de34e43 | 2000-09-10 16:16:00 +0000 | [diff] [blame] | 135 | else if (info.flags & NEW_MOD_INITIALIZING) |
Eric Andersen | 31f9747 | 2002-10-18 22:14:07 +0000 | [diff] [blame] | 136 | printf(" (initializing)"); |
Eric Andersen | de34e43 | 2000-09-10 16:16:00 +0000 | [diff] [blame] | 137 | else if (!(info.flags & NEW_MOD_RUNNING)) |
Eric Andersen | 31f9747 | 2002-10-18 22:14:07 +0000 | [diff] [blame] | 138 | printf(" (uninitialized)"); |
Eric Andersen | de34e43 | 2000-09-10 16:16:00 +0000 | [diff] [blame] | 139 | else { |
| 140 | if (info.flags & NEW_MOD_AUTOCLEAN) |
Eric Andersen | 31f9747 | 2002-10-18 22:14:07 +0000 | [diff] [blame] | 141 | printf(" (autoclean) "); |
Eric Andersen | de34e43 | 2000-09-10 16:16:00 +0000 | [diff] [blame] | 142 | if (!(info.flags & NEW_MOD_USED_ONCE)) |
Eric Andersen | 31f9747 | 2002-10-18 22:14:07 +0000 | [diff] [blame] | 143 | printf(" (unused)"); |
Eric Andersen | de34e43 | 2000-09-10 16:16:00 +0000 | [diff] [blame] | 144 | } |
Eric Andersen | 31f9747 | 2002-10-18 22:14:07 +0000 | [diff] [blame] | 145 | if (count) printf(" ["); |
Eric Andersen | afeb965 | 2001-02-24 19:51:54 +0000 | [diff] [blame] | 146 | for (j = 0, dn = deps; j < count; dn += strlen(dn) + 1, j++) { |
| 147 | printf("%s%s", dn, (j==count-1)? "":" "); |
| 148 | } |
Eric Andersen | 31f9747 | 2002-10-18 22:14:07 +0000 | [diff] [blame] | 149 | if (count) printf("]"); |
Eric Andersen | afeb965 | 2001-02-24 19:51:54 +0000 | [diff] [blame] | 150 | |
Eric Andersen | ccb0a9b | 2000-09-12 16:20:49 +0000 | [diff] [blame] | 151 | printf("\n"); |
Eric Andersen | be0dc0d | 2000-08-21 19:25:16 +0000 | [diff] [blame] | 152 | } |
| 153 | |
Tim Riker | 6fe1960 | 2002-12-13 22:59:15 +0000 | [diff] [blame] | 154 | #ifdef CONFIG_FEATURE_CLEAN_UP |
| 155 | free(module_names); |
| 156 | #endif |
Eric Andersen | be0dc0d | 2000-08-21 19:25:16 +0000 | [diff] [blame] | 157 | |
| 158 | return( 0); |
Erik Andersen | 6f23cec | 1999-12-15 22:14:12 +0000 | [diff] [blame] | 159 | } |
Eric Andersen | 21adca7 | 2000-12-06 18:18:26 +0000 | [diff] [blame] | 160 | |
Eric Andersen | 71ae64b | 2002-10-10 04:20:21 +0000 | [diff] [blame] | 161 | #else /* CONFIG_FEATURE_QUERY_MODULE_INTERFACE */ |
Eric Andersen | 21adca7 | 2000-12-06 18:18:26 +0000 | [diff] [blame] | 162 | |
Eric Andersen | 21adca7 | 2000-12-06 18:18:26 +0000 | [diff] [blame] | 163 | extern int lsmod_main(int argc, char **argv) |
| 164 | { |
Eric Andersen | 166fa46 | 2002-09-16 05:30:24 +0000 | [diff] [blame] | 165 | printf("Module Size Used by"); |
| 166 | check_tainted(); |
Eric Andersen | 21adca7 | 2000-12-06 18:18:26 +0000 | [diff] [blame] | 167 | |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 168 | if (bb_xprint_file_by_name("/proc/modules") < 0) { |
| 169 | return 0; |
| 170 | } |
Eric Andersen | 21adca7 | 2000-12-06 18:18:26 +0000 | [diff] [blame] | 171 | return 1; |
| 172 | } |
| 173 | |
Eric Andersen | 71ae64b | 2002-10-10 04:20:21 +0000 | [diff] [blame] | 174 | #endif /* CONFIG_FEATURE_QUERY_MODULE_INTERFACE */ |