diff options
Diffstat (limited to 'busybox/modutils/lsmod.c')
| -rw-r--r-- | busybox/modutils/lsmod.c | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/busybox/modutils/lsmod.c b/busybox/modutils/lsmod.c new file mode 100644 index 0000000..7bf314a --- /dev/null +++ b/busybox/modutils/lsmod.c @@ -0,0 +1,174 @@ +/* vi: set sw=4 ts=4: */ +/* + * Mini lsmod implementation for busybox + * + * Copyright (C) 1999-2004 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 + * + */ + +#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" + + +#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) + +static void check_tainted(void) +{ + int tainted; + FILE *f; + + tainted = 0; + if ((f = fopen(TAINT_FILENAME, "r"))) { + fscanf(f, "%d", &tainted); + fclose(f); + } + if (f && 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 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) +{ + 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"); + 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 (count) printf(" ["); + for (j = 0, dn = deps; j < count; dn += strlen(dn) + 1, j++) { + printf("%s%s", dn, (j==count-1)? "":" "); + } + 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"); + check_tainted(); + + if (bb_xprint_file_by_name("/proc/modules") < 0) { + return 0; + } + return 1; +} + +#endif /* CONFIG_FEATURE_QUERY_MODULE_INTERFACE */ |