Support module tainting

 -Erik


git-svn-id: svn://busybox.net/trunk/busybox@5492 69ca8d6d-28ef-0310-b511-8ec308f3f277

1 files changed, 32 insertions, 2 deletions

diff --git a/modutils/lsmod.c b/modutils/lsmod.c
index 5cb585bab..3618ebe0b 100644
--- a/modutils/lsmod.c
+++ b/modutils/lsmod.c
@@ -41,6 +41,32 @@
 
 
 
+#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)
+
+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",
+                                tainted & TAINT_PROPRIETORY_MODULE      ? 'P' : 'G',
+                                tainted & TAINT_FORCED_MODULE           ? 'F' : ' ',
+                                tainted & TAINT_UNSAFE_SMP              ? 'S' : ' ');
+        }
+        else {
+                printf("    Not tainted");
+        }
+}
+
 #ifdef CONFIG_FEATURE_QUERY_MODULE_INTERFACE
 
 struct module_info
@@ -99,7 +125,10 @@ extern int lsmod_main(int argc, char **argv)
         }
 
         deps = xmalloc(depsize = 256);
-        printf("Module                  Size  Used by\n");
+        printf("Module                  Size  Used by");
+        check_tainted();
+        printf("\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) {
@@ -149,7 +178,8 @@ extern int lsmod_main(int argc, char **argv)
         int fd, i;
         char line[128];
 
-        puts("Module                  Size  Used by");
+        printf("Module                  Size  Used by");
+        check_tainted();
         fflush(stdout);
 
         if ((fd = open("/proc/modules", O_RDONLY)) >= 0 ) {