Bump to version 1.22.1

[platform/upstream/busybox.git] / modutils / lsmod.c

diff --git a/modutils/lsmod.c b/modutils/lsmod.c
index d3b1bb7..3b3c166 100644 (file)
--- a/modutils/lsmod.c
+++ b/modutils/lsmod.c
@@ -2,39 +2,111 @@
 /*
  * Mini lsmod implementation for busybox
  *
- * Copyright (C) 1999,2000 by Lineo, inc.
- * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.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
+ * 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 "internal.h"
-#include <stdio.h>
+//applet:IF_LSMOD(APPLET(lsmod, BB_DIR_SBIN, BB_SUID_DROP))
+
+//usage:#if !ENABLE_MODPROBE_SMALL
+//usage:#define lsmod_trivial_usage
+//usage:       ""
+//usage:#define lsmod_full_usage "\n\n"
+//usage:       "List the currently loaded kernel modules"
+//usage:#endif
 
+#include "libbb.h"
+#include "unicode.h"
 
-extern int lsmod_main(int argc, char **argv)
+#if ENABLE_FEATURE_CHECK_TAINTED_MODULE
+enum {
+       TAINT_PROPRIETORY_MODULE = (1 << 0),
+       TAINT_FORCED_MODULE      = (1 << 1),
+       TAINT_UNSAFE_SMP         = (1 << 2),
+};
+
+static void check_tainted(void)
 {
-#if defined BB_FEATURE_USE_DEVPS_PATCH
-       char *cmd[] = { "cat", "/dev/modules", "\0" };
+       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);
+       }
+
+       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");
+       }
+}
 #else
-#if ! defined BB_FEATURE_USE_PROCFS
-#error Sorry, I depend on the /proc filesystem right now.
-#endif
-       char *cmd[] = { "cat", "/proc/modules", "\0" };
+static void check_tainted(void) { putchar('\n'); }
 #endif
 
-       return(cat_main(3, cmd));
+int lsmod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int lsmod_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
+{
+#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
+               }
+       }
+       if (ENABLE_FEATURE_CLEAN_UP)
+               config_close(parser);
+#else
+       check_tainted();
+       xprint_and_close_file(xfopen_for_read("/proc/modules"));
+#endif
+       return EXIT_SUCCESS;
 }