[PATCH] uml: fix syscall table by including $(SUBARCH)'s one, for x86-64

Reuse asm-x86-64/unistd.h to build our syscall table, like x86-64 already
does.

Like for i386, we must add some #defines for all the (right!) changes UML does
to x86-64 syscall table.

Note: I noted a bogus:
	[ __NR_sched_yield ] = (syscall_handler_t *) yield,

while doing this patch (which could only be a workaround for some strange bug,
but I would ignore this possibility).  I'm changing this without notice.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 12 insertions, 0 deletions

diff --git a/arch/um/sys-x86_64/syscalls.c b/arch/um/sys-x86_64/syscalls.c
index 68205a03364c..15768c96ceb4 100644
--- a/arch/um/sys-x86_64/syscalls.c
+++ b/arch/um/sys-x86_64/syscalls.c
@@ -14,6 +14,7 @@
 #include "asm/prctl.h" /* XXX This should get the constants from libc */
 #include "choose-mode.h"
 
+/* XXX: copied from x86-64: arch/x86_64/kernel/sys_x86_64.c */
 asmlinkage long wrap_sys_shmat(int shmid, char __user *shmaddr, int shmflg)
 {
         unsigned long raddr;
@@ -21,6 +22,17 @@ asmlinkage long wrap_sys_shmat(int shmid, char __user *shmaddr, int shmflg)
         return do_shmat(shmid, shmaddr, shmflg, &raddr) ?: (long) raddr;
 }
 
+asmlinkage long sys_uname64(struct new_utsname __user * name)
+{
+        int err;
+        down_read(&uts_sem);
+        err = copy_to_user(name, &system_utsname, sizeof (*name));
+        up_read(&uts_sem);
+        if (personality(current->personality) == PER_LINUX32)
+                err |= copy_to_user(&name->machine, "i686", 5);
+        return err ? -EFAULT : 0;
+}
+
 #ifdef CONFIG_MODE_TT
 extern int modify_ldt(int func, void *ptr, unsigned long bytecount);