kexec: add call to LSM hook in original kexec_load syscall

[linux-2.6-microblaze.git] / kernel / kexec.c

diff --git a/kernel/kexec.c b/kernel/kexec.c
index aed8fb2..6855980 100644 (file)
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -11,6 +11,7 @@
 #include <linux/capability.h>
 #include <linux/mm.h>
 #include <linux/file.h>
+#include <linux/security.h>
 #include <linux/kexec.h>
 #include <linux/mutex.h>
 #include <linux/list.h>
@@ -195,10 +196,17 @@ out:
 static inline int kexec_load_check(unsigned long nr_segments,
                                   unsigned long flags)
 {
+       int result;
+
        /* We only trust the superuser with rebooting the system. */
        if (!capable(CAP_SYS_BOOT) || kexec_load_disabled)
                return -EPERM;
 
+       /* Permit LSMs and IMA to fail the kexec */
+       result = security_kernel_load_data(LOADING_KEXEC_IMAGE);
+       if (result < 0)
+               return result;
+
        /*
         * Verify we have a legal set of flags
         * This leaves us room for future extensions.