libelf: move include of <asm/guest_access.h> to top of file

libelf-loader.c #includes <asm/guest_access.h>, when being compiled
for Xen.  Currently it does this in the middle of the file.

Move this #include to the top of the file, before libelf-private.h.
This is necessary because in forthcoming patches we will introduce
private #defines of memcpy etc. which would interfere with definitions
in headers #included from guest_access.h.

No semantic or functional change in this patch.

This is part of the fix to a security issue, XSA-55.

Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Chuck Anderson <chuck.anderson@oracle.com>

diff --git a/xen/common/libelf/libelf-loader.c b/xen/common/libelf/libelf-loader.c
index bce667ffc7055c76f8937cb171238da212b7a2fe..94257f672eeefb9d60926b491680833afe78ad8d 100644 (file)
--- a/xen/common/libelf/libelf-loader.c
+++ b/xen/common/libelf/libelf-loader.c
@@ -16,6 +16,10 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
+#ifdef __XEN__
+#include <asm/guest_access.h>
+#endif
+
 #include "libelf-private.h"
 
 /* ------------------------------------------------------------------------ */
@@ -116,7 +120,6 @@ static int elf_load_image(struct elf_binary *elf,
     return 0;
 }
 #else
-#include <asm/guest_access.h>
 
 void elf_set_verbose(struct elf_binary *elf)
 {