X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=modutils%2Flsmod.c;h=baf0e2a9db014106e4b92489c9d6e64953bdc136;hb=68404f13d4bf4826e3609703dad5375763db28ab;hp=4c50bf4bdfd3a0cb4daf8aa4ab44bbad9a34df4f;hpb=0dab82997777bffb95d01d68e1628ee79207a03d;p=oweals%2Fbusybox.git diff --git a/modutils/lsmod.c b/modutils/lsmod.c index 4c50bf4bd..baf0e2a9d 100644 --- a/modutils/lsmod.c +++ b/modutils/lsmod.c @@ -2,49 +2,49 @@ /* * Mini lsmod implementation for busybox * - * Copyright (C) 1999,2000 by Lineo, inc. - * Written by Erik Andersen , + * Copyright (C) 1999-2004 by Erik Andersen * * Modified by Alcove, Julien Gaulmin and * Nicolas Ferre 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 - * + * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. */ -#include "busybox.h" -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include +#include "libbb.h" +#if !ENABLE_FEATURE_CHECK_TAINTED_MODULE +static void check_tainted(void) { bb_putchar('\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 !defined(BB_FEATURE_LSMOD_NEW_KERNEL) && !defined(BB_FEATURE_LSMOD_OLD_KERNEL) -#error "Must have ether BB_FEATURE_LSMOD_NEW_KERNEL or BB_FEATURE_LSMOD_OLD_KERNEL defined" +static void check_tainted(void) +{ + int tainted; + FILE *f; + + tainted = 0; + f = fopen(TAINT_FILENAME, "r"); + if (f) { + fscanf(f, "%d", &tainted); + fclose(f); + } + 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 { + printf(" Not tainted\n"); + } +} #endif -#ifdef BB_FEATURE_LSMOD_NEW_KERNEL +#if ENABLE_FEATURE_QUERY_MODULE_INTERFACE struct module_info { @@ -55,38 +55,43 @@ struct module_info }; -int query_module(const char *name, int which, void *buf, size_t bufsize, - size_t *ret); +int query_module(const char *name, int which, void *buf, size_t bufsize, size_t *ret); +enum { /* Values for query_module's which. */ -#define QM_MODULES 1 -#define QM_DEPS 2 -#define QM_REFS 3 -#define QM_SYMBOLS 4 -#define QM_INFO 5 + QM_MODULES = 1, + QM_DEPS = 2, + QM_REFS = 3, + QM_SYMBOLS = 4, + QM_INFO = 5, /* Bits of module.flags. */ -#define NEW_MOD_RUNNING 1 -#define NEW_MOD_DELETED 2 -#define NEW_MOD_AUTOCLEAN 4 -#define NEW_MOD_VISITED 8 -#define NEW_MOD_USED_ONCE 16 -#define NEW_MOD_INITIALIZING 64 - + NEW_MOD_RUNNING = 1, + NEW_MOD_DELETED = 2, + NEW_MOD_AUTOCLEAN = 4, + NEW_MOD_VISITED = 8, + NEW_MOD_USED_ONCE = 16, + 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, char **argv) { struct module_info info; char *module_names, *mn, *deps, *dn; - size_t bufsize, nmod, count, i, j; + size_t bufsize, depsize, nmod, count, i, j; - module_names = xmalloc(bufsize = 256); - deps = xmalloc(bufsize); - if (query_module(NULL, QM_MODULES, module_names, bufsize, &nmod)) { - perror_msg_and_die("QM_MODULES"); + module_names = deps = NULL; + bufsize = depsize = 0; + while (query_module(NULL, QM_MODULES, module_names, bufsize, &nmod)) { + if (errno != ENOSPC) bb_perror_msg_and_die("QM_MODULES"); + module_names = xmalloc(bufsize = nmod); } - printf("Module Size Used by\n"); + deps = xmalloc(depsize = 256); + printf("Module\t\t\tSize Used by"); + 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) { @@ -94,67 +99,94 @@ extern int lsmod_main(int argc, char **argv) continue; } /* else choke */ - perror_msg_and_die("module %s: QM_INFO", mn); + bb_perror_msg_and_die("module %s: QM_INFO", mn); } - while (query_module(mn, QM_REFS, deps, bufsize, &count)) { + while (query_module(mn, QM_REFS, deps, depsize, &count)) { if (errno == ENOENT) { /* The module was removed out from underneath us. */ continue; - } - if (errno != ENOSPC) { - error_msg_and_die("module %s: QM_REFS", mn); - } - deps = xrealloc(deps, bufsize = count); - } - printf("%-20s%8lu%4ld ", mn, info.size, info.usecount); - if (count) printf("["); - for (j = 0, dn = deps; j < count; dn += strlen(dn) + 1, j++) { - printf("%s%s", dn, (j==count-1)? "":" "); + } else if (errno != ENOSPC) + bb_perror_msg_and_die("module %s: QM_REFS", mn); + deps = xrealloc(deps, count); } - if (count) printf("] "); - + printf("%-20s%8lu%4ld", mn, info.size, info.usecount); if (info.flags & NEW_MOD_DELETED) - printf("(deleted)"); + printf(" (deleted)"); else if (info.flags & NEW_MOD_INITIALIZING) - printf("(initializing)"); + printf(" (initializing)"); else if (!(info.flags & NEW_MOD_RUNNING)) - printf("(uninitialized)"); + printf(" (uninitialized)"); else { if (info.flags & NEW_MOD_AUTOCLEAN) - printf("(autoclean) "); + printf(" (autoclean) "); if (!(info.flags & NEW_MOD_USED_ONCE)) - printf("(unused)"); + printf(" (unused)"); } - printf("\n"); + if (count) printf(" ["); + for (j = 0, dn = deps; j < count; dn += strlen(dn) + 1, j++) { + printf("%s%s", dn, (j==count-1)? "":" "); + } + if (count) printf("]"); + + bb_putchar('\n'); } +#if ENABLE_FEATURE_CLEAN_UP + free(module_names); +#endif - return( 0); + return 0; } -#else /*BB_FEATURE_LSMOD_OLD_KERNEL*/ - -#if ! defined BB_FEATURE_USE_PROCFS -#error Sorry, I depend on the /proc filesystem right now. -#endif +#else /* CONFIG_FEATURE_QUERY_MODULE_INTERFACE */ -extern int lsmod_main(int argc, char **argv) +int lsmod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; +int lsmod_main(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED) { - int fd, i; - char line[128]; - - puts("Module Size Used by"); - fflush(stdout); - - if ((fd = open("/proc/modules", O_RDONLY)) >= 0 ) { - while ((i = read(fd, line, sizeof(line))) > 0) { - write(fileno(stdout), line, i); + FILE *file = xfopen("/proc/modules", "r"); + + printf("Module Size Used by"); + check_tainted(); +#if ENABLE_FEATURE_LSMOD_PRETTY_2_6_OUTPUT + { + char *line; + while ((line = xmalloc_fgets(file)) != NULL) { + char *tok; + + tok = strtok(line, " \t"); + printf("%-19s", tok); + tok = strtok(NULL, " \t\n"); + printf(" %8s", tok); + tok = strtok(NULL, " \t\n"); + /* Null if no module unloading support. */ + if (tok) { + printf(" %s", tok); + tok = strtok(NULL, "\n"); + if (!tok) + tok = (char*)""; + /* New-style has commas, or -. If so, + truncate (other fields might follow). */ + else if (strchr(tok, ',')) { + tok = strtok(tok, "\t "); + /* Strip trailing comma. */ + if (tok[strlen(tok)-1] == ',') + tok[strlen(tok)-1] = '\0'; + } else if (tok[0] == '-' + && (tok[1] == '\0' || isspace(tok[1])) + ) { + tok = (char*)""; + } + printf(" %s", tok); + } + bb_putchar('\n'); + free(line); } - close(fd); - return 0; + fclose(file); } - perror_msg_and_die("/proc/modules"); - return 1; +#else + xprint_and_close_file(file); +#endif /* CONFIG_FEATURE_2_6_MODULES */ + return EXIT_SUCCESS; } -#endif /*BB_FEATURE_LSMOD_OLD_KERNEL*/ +#endif /* CONFIG_FEATURE_QUERY_MODULE_INTERFACE */