1 files changed, 79 insertions, 0 deletions
diff --git a/modutils/lsmod.c b/modutils/lsmod.c
new file mode 100644
index 0000000..87dd1fc
--- /dev/null
+++ b/modutils/lsmod.c
@@ -0,0 +1,79 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Mini lsmod implementation for busybox
+ *
+ * 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 tarball for details.
+ */
+
+#include "libbb.h"
+
+#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)
+{
+	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
+static void check_tainted(void) { putchar('\n'); }
+#endif
+
+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");
+	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 *) "";
+			printf("%-19s %8s %2s %s\n", token[0], token[1], token[2], token[3]);
+		}
+	} 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!
+			token[3][strlen(token[3])-1] = '\0';
+			printf("%-19s %8s %2s %s\n", token[0], token[1], token[2], token[3]);
+		}
+	}
+	if (ENABLE_FEATURE_CLEAN_UP)
+		config_close(parser);
+#else
+	check_tainted();
+	xprint_and_close_file(xfopen_for_read("/proc/modules"));
+#endif
+	return EXIT_SUCCESS;
+}