From: Rusty Russell <rusty@rustcorp.com.au>
Date: Fri, 9 May 2008 06:23:17 +0000 (+1000)
Subject: module: put modversions in vermagic
X-Git-Tag: v2.6.26-rc2~22
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6c2545eefffc452e52302c96c955d9aa26353aa9;p=linux-2.6

module: put modversions in vermagic

Don't allow a module built without versions altogether to be inserted
into a kernel which expects modversions.

modprobe --force will strip vermagic as well as modversions, so it
won't be effected, but this will make sure that a
non-CONFIG_MODVERSIONS module won't be accidentally inserted into a
CONFIG_MODVERSIONS kernel.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/include/linux/vermagic.h b/include/linux/vermagic.h
index 4d0909e535..79b9837d9c 100644
--- a/include/linux/vermagic.h
+++ b/include/linux/vermagic.h
@@ -17,6 +17,11 @@
 #else
 #define MODULE_VERMAGIC_MODULE_UNLOAD ""
 #endif
+#ifdef CONFIG_MODVERSIONS
+#define MODULE_VERMAGIC_MODVERSIONS "modversions "
+#else
+#define MODULE_VERMAGIC_MODVERSIONS ""
+#endif
 #ifndef MODULE_ARCH_VERMAGIC
 #define MODULE_ARCH_VERMAGIC ""
 #endif
@@ -24,5 +29,6 @@
 #define VERMAGIC_STRING 						\
 	UTS_RELEASE " "							\
 	MODULE_VERMAGIC_SMP MODULE_VERMAGIC_PREEMPT 			\
-	MODULE_VERMAGIC_MODULE_UNLOAD MODULE_ARCH_VERMAGIC
+	MODULE_VERMAGIC_MODULE_UNLOAD MODULE_VERMAGIC_MODVERSIONS	\
+	MODULE_ARCH_VERMAGIC