[PATCH] x86_64: Disable uselib when possible

Disable sys_uselib for 64bit processes and only enable for 32bit processes
when a.out support is compiled in.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/x86_64/ia32/ia32entry.S

@@ -388,7 +388,11 @@ ia32_sys_call_table:
 	.quad sys_symlink
 	.quad sys_lstat
 	.quad sys_readlink		/* 85 */
+#ifdef CONFIG_IA32_AOUT
 	.quad sys_uselib
+#else
+	.quad quiet_ni_syscall
+#endif
 	.quad sys_swapon
 	.quad sys_reboot
 	.quad compat_sys_old_readdir

include/asm-x86_64/unistd.h

@@ -298,8 +298,9 @@ __SYSCALL(__NR_utime, sys_utime)
 #define __NR_mknod                             133
 __SYSCALL(__NR_mknod, sys_mknod)
 
+/* Only needed for a.out */
 #define __NR_uselib                            134
-__SYSCALL(__NR_uselib, sys_uselib)
+__SYSCALL(__NR_uselib, sys_ni_syscall)
 #define __NR_personality                       135
 __SYSCALL(__NR_personality, sys_personality)