[PATCH] uml: Allow vsyscall code to build on 2.4

From: Bodo Stroesser <bstroesser@fujitsu-siemens.com>

This patch fixes compilation on 2.4 hosts by not relying on macros from 2.6
host kernel headers in one userspace file. It's about AT_SYSINFO_* macros.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade_spam@yahoo.it>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/um/include/elf_user.h

+/*
+ * Copyright (C) 2004 Fujitsu Siemens Computers GmbH
+ * Author: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
+ * Licensed under the GPL
+ */
+
+#ifndef __ELF_USER_H__
+#define __ELF_USER_H__
+
+/* For compilation on a host that doesn't support AT_SYSINFO (Linux 2.4)  */
+
+#ifndef AT_SYSINFO
+#define AT_SYSINFO 32
+#endif
+#ifndef AT_SYSINFO_EHDR
+#define AT_SYSINFO_EHDR 33
+#endif
+
+#endif

arch/um/os-Linux/elf_aux.c

@@ -10,6 +10,7 @@
 #include <elf.h>
 #include <stddef.h>
 #include "init.h"
+#include "elf_user.h"
 
 #if ELF_CLASS == ELFCLASS32
 typedef Elf32_auxv_t elf_auxv_t;