/*
* Mini lsmod implementation for busybox
*
- * Copyright (C) 1999,2000 by Lineo, inc.
- * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
*
- * 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
+ * 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 "internal.h"
-#include <stdio.h>
+#include "libbb.h"
-extern int lsmod_main(int argc, char **argv)
-{
-#if defined BB_FEATURE_USE_DEVPS_PATCH
- char *filename = "/dev/modules";
+#if !ENABLE_FEATURE_CHECK_TAINTED_MODULE
+static void check_tainted(void) { puts(""); }
#else
-#if ! defined BB_FEATURE_USE_PROCFS
-#error Sorry, I depend on the /proc filesystem right now.
+#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
- char *filename = "/proc/modules";
+
+#if ENABLE_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);
+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 = 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);
+ }
+
+ 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) {
+ /* The module was removed out from underneath us. */
+ continue;
+ }
+ /* else choke */
+ bb_perror_msg_and_die("module %s: QM_INFO", mn);
+ }
+ while (query_module(mn, QM_REFS, deps, depsize, &count)) {
+ if (errno == ENOENT) {
+ /* The module was removed out from underneath us. */
+ continue;
+ } else if (errno != ENOSPC)
+ bb_perror_msg_and_die("module %s: QM_REFS", mn);
+ deps = xrealloc(deps, count);
+ }
+ 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("]");
+
+ puts("");
+ }
+
+#if ENABLE_FEATURE_CLEAN_UP
+ free(module_names);
#endif
- return(print_file_by_name(filename));
+ return 0;
+}
+
+#else /* CONFIG_FEATURE_QUERY_MODULE_INTERFACE */
+
+int lsmod_main(int argc, char **argv);
+int lsmod_main(int argc, char **argv)
+{
+ FILE *file = xfopen("/proc/modules", "r");
+
+ printf("Module Size Used by");
+ check_tainted();
+#if defined(CONFIG_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);
+ }
+ puts("");
+ free(line);
+ }
+ fclose(file);
+ }
+#else
+ xprint_and_close_file(file);
+#endif /* CONFIG_FEATURE_2_6_MODULES */
+ return EXIT_SUCCESS;
}
+
+#endif /* CONFIG_FEATURE_QUERY_MODULE_INTERFACE */
projects / oweals / busybox.git / blobdiff