/* vi: set sw=4 ts=4: */ /* * Mini lsmod implementation for busybox * * Copyright (C) 1999,2000 by Lineo, inc. and Erik Andersen * Copyright (C) 1999,2000,2001 by Erik Andersen <andersee@debian.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" #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; static int my_query_module(const char *name, int which, void **buf, size_t *bufsize, size_t *ret) { int my_ret; my_ret = query_module(name, which, *buf, *bufsize, ret); if (my_ret == -1 && errno == ENOSPC) { *buf = xrealloc(*buf, *ret); *bufsize = *ret; my_ret = query_module(name, which, *buf, *bufsize, ret); } return my_ret; } 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)) { perror_msg_and_die("QM_MODULES"); } deps = xmalloc(depsize = 256); printf("Module Size Used by\n"); 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 */ 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; } 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"); } return( 0); } #else /*CONFIG_FEATURE_OLD_MODULE_INTERFACE*/ extern int lsmod_main(int argc, char **argv) { 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); } close(fd); return 0; } perror_msg_and_die("/proc/modules"); return 1; } #endif /*CONFIG_FEATURE_OLD_MODULE_INTERFACE*/