| /* 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). |
| * |
| * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. |
| */ |
| |
| #include "busybox.h" |
| #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> |
| |
| |
| #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); |
| |
| enum { |
| /* Values for query_module's which. */ |
| QM_MODULES = 1, |
| QM_DEPS = 2, |
| QM_REFS = 3, |
| QM_SYMBOLS = 4, |
| QM_INFO = 5, |
| |
| /* Bits of module.flags. */ |
| 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 |
| }; |
| |
| 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 */ |
| |
| int lsmod_main(int argc, char **argv) |
| { |
| printf("Module Size Used by"); |
| check_tainted(); |
| #if defined(CONFIG_FEATURE_LSMOD_PRETTY_2_6_OUTPUT) |
| { |
| FILE *file; |
| char line[4096]; |
| |
| file = bb_xfopen("/proc/modules", "r"); |
| |
| while (fgets(line, sizeof(line), file)) { |
| 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 = ""; |
| /* 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 = ""; |
| printf(" %s", tok); |
| } |
| printf("\n"); |
| } |
| fclose(file); |
| } |
| return EXIT_SUCCESS; |
| #else |
| if (bb_xprint_file_by_name("/proc/modules") == 0) |
| return EXIT_SUCCESS; |
| #endif /* CONFIG_FEATURE_2_6_MODULES */ |
| |
| return EXIT_FAILURE; |
| } |
| |
| #endif /* CONFIG_FEATURE_QUERY_MODULE_INTERFACE */ |