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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>
This commit is contained in:
Rusty Russell 2008-05-09 16:23:17 +10:00 committed by Linus Torvalds
parent 28a4acb485
commit 6c2545eeff
1 changed files with 7 additions and 1 deletions
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8
include/linux/vermagic.h
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@ -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