More from Jan Kiszka: this is a port of the latest sysv-init SELinux patch.

It makes busybox invoke the libselinux library function to load the binary
policy right at system start-up. It was successfully tested on a mini-SELinux
system.  Note: requires recent libselinux. I'm using 1.28.

1 files changed, 21 insertions, 0 deletions

diff --git a/init/init.c b/init/init.c
index 704cfccda..575ab9775 100644
--- a/init/init.c
+++ b/init/init.c
@@ -39,6 +39,11 @@
 #endif
 
 
+#ifdef CONFIG_SELINUX
+# include <selinux/selinux.h>
+#endif /* CONFIG_SELINUX */
+
+
 #define INIT_BUFFS_SIZE 256
 
 /* From <linux/vt.h> */
@@ -1097,6 +1102,22 @@ int init_main(int argc, char **argv)
                 parse_inittab();
         }
 
+#ifdef CONFIG_SELINUX
+        if (getenv("SELINUX_INIT") == NULL) {
+                int enforce = 0;
+
+                putenv("SELINUX_INIT=YES");
+                if (selinux_init_load_policy(&enforce) == 0) {
+                        execv(argv[0], argv);
+                } else if (enforce > 0) {
+                        /* SELinux in enforcing mode but load_policy failed */
+                        /* At this point, we probably can't open /dev/console, so log() won't work */
+                        message(CONSOLE,"Unable to load SELinux Policy. Machine is in enforcing mode. Halting now.");
+                        exit(1);
+                }
+        }
+#endif /* CONFIG_SELINUX */
+
         /* Make the command line just say "init"  -- thats all, nothing else */
         fixup_argv(argc, argv, "init");