/*
* Mini lsmod implementation for busybox
*
- * Copyright (C) 1999,2000,2001 by Lineo, inc.
- * Written by Erik Andersen <andersen@lineo.com>, <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
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
+ * Copyright (C) 2008 by Vladimir Dronnikov <dronnikov@gmail.com>
*
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
-
-#include "busybox.h"
-#include <stdlib.h>
-#include <stdio.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>
-
-
-
-#ifdef BB_FEATURE_NEW_MODULE_INTERFACE
-
-struct module_info
-{
- unsigned long addr;
- unsigned long size;
- unsigned long flags;
- long usecount;
+//config:config LSMOD
+//config: bool "lsmod (1.9 kb)"
+//config: default y
+//config: select PLATFORM_LINUX
+//config: help
+//config: lsmod is used to display a list of loaded modules.
+//config:
+//config:config FEATURE_LSMOD_PRETTY_2_6_OUTPUT
+//config: bool "Pretty output"
+//config: default y
+//config: depends on LSMOD && !MODPROBE_SMALL
+//config: help
+//config: This option makes output format of lsmod adjusted to
+//config: the format of module-init-tools for Linux kernel 2.6.
+//config: Increases size somewhat.
+
+//applet:IF_LSMOD(IF_NOT_MODPROBE_SMALL(APPLET_NOEXEC(lsmod, lsmod, BB_DIR_SBIN, BB_SUID_DROP, lsmod)))
+
+//kbuild:ifneq ($(CONFIG_MODPROBE_SMALL),y)
+//kbuild:lib-$(CONFIG_LSMOD) += lsmod.o modutils.o
+//kbuild:endif
+
+//usage:#if !ENABLE_MODPROBE_SMALL
+//usage:#define lsmod_trivial_usage
+//usage: ""
+//usage:#define lsmod_full_usage "\n\n"
+//usage: "List loaded kernel modules"
+//usage:#endif
+
+#include "libbb.h"
+#include "unicode.h"
+
+#if ENABLE_FEATURE_CHECK_TAINTED_MODULE
+enum {
+ TAINT_PROPRIETORY_MODULE = (1 << 0),
+ TAINT_FORCED_MODULE = (1 << 1),
+ TAINT_UNSAFE_SMP = (1 << 2),
};
-
-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)
+static void check_tainted(void)
{
- struct module_info info;
- char *module_names, *mn, *deps, *dn;
- size_t bufsize, 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");
+ int tainted = 0;
+ char *buf = xmalloc_open_read_close("/proc/sys/kernel/tainted", NULL);
+ if (buf) {
+ tainted = atoi(buf);
+ if (ENABLE_FEATURE_CLEAN_UP)
+ free(buf);
}
- 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);
- }
- while (query_module(mn, QM_REFS, deps, bufsize, &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)? "":" ");
- }
- if (count) printf("] ");
-
- 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)");
- }
- printf("\n");
+ 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 {
+ puts(" Not tainted");
}
-
-
- return( 0);
}
-
-#else /*BB_FEATURE_OLD_MODULE_INTERFACE*/
-
-#if ! defined BB_FEATURE_USE_PROCFS
-#error Sorry, I depend on the /proc filesystem right now.
+#else
+static void check_tainted(void) { putchar('\n'); }
#endif
-extern int lsmod_main(int argc, char **argv)
+int lsmod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int lsmod_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
{
- 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);
+#if ENABLE_FEATURE_LSMOD_PRETTY_2_6_OUTPUT
+ char *token[4];
+ parser_t *parser = config_open("/proc/modules");
+ init_unicode();
+
+ printf("%-24sSize Used by", "Module");
+ check_tainted();
+
+ if (ENABLE_FEATURE_2_4_MODULES
+ && get_linux_version_code() < KERNEL_VERSION(2,6,0)
+ ) {
+ while (config_read(parser, token, 4, 3, "# \t", PARSE_NORMAL)) {
+ if (token[3] != NULL && token[3][0] == '[') {
+ token[3]++;
+ token[3][strlen(token[3])-1] = '\0';
+ } else
+ token[3] = (char *) "";
+# if ENABLE_UNICODE_SUPPORT
+ {
+ uni_stat_t uni_stat;
+ char *uni_name = unicode_conv_to_printable(&uni_stat, token[0]);
+ unsigned pad_len = (uni_stat.unicode_width > 19) ? 0 : 19 - uni_stat.unicode_width;
+ printf("%s%*s %8s %2s %s\n", uni_name, pad_len, "", token[1], token[2], token[3]);
+ free(uni_name);
+ }
+# else
+ printf("%-19s %8s %2s %s\n", token[0], token[1], token[2], token[3]);
+# endif
+ }
+ } else {
+ while (config_read(parser, token, 4, 4, "# \t", PARSE_NORMAL & ~PARSE_GREEDY)) {
+ // N.B. token[3] is either '-' (module is not used by others)
+ // or comma-separated list ended by comma
+ // so trimming the trailing char is just what we need!
+ if (token[3][0])
+ token[3][strlen(token[3]) - 1] = '\0';
+# if ENABLE_UNICODE_SUPPORT
+ {
+ uni_stat_t uni_stat;
+ char *uni_name = unicode_conv_to_printable(&uni_stat, token[0]);
+ unsigned pad_len = (uni_stat.unicode_width > 19) ? 0 : 19 - uni_stat.unicode_width;
+ printf("%s%*s %8s %2s %s\n", uni_name, pad_len, "", token[1], token[2], token[3]);
+ free(uni_name);
+ }
+# else
+ printf("%-19s %8s %2s %s\n", token[0], token[1], token[2], token[3]);
+# endif
}
- close(fd);
- return 0;
}
- perror_msg_and_die("/proc/modules");
- return 1;
+ if (ENABLE_FEATURE_CLEAN_UP)
+ config_close(parser);
+#else
+ check_tainted();
+ xprint_and_close_file(xfopen_for_read("/proc/modules"));
+#endif
+ return EXIT_SUCCESS;
}
-
-#endif /*BB_FEATURE_OLD_MODULE_INTERFACE*/
projects / oweals / busybox.git / blobdiff