[PATCH 3.13.y-ckt 046/121] xtensa: re-wire umount syscall to sys_oldumount
Kamal Mostafa
kamal at canonical.com
Tue Dec 2 19:18:45 UTC 2014
3.13.11-ckt12 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Max Filippov <jcmvbkbc at gmail.com>
commit 2651cc6974d47fc43bef1cd8cd26966e4f5ba306 upstream.
Userspace actually passes single parameter (path name) to the umount
syscall, so new umount just fails. Fix it by requesting old umount
syscall implementation and re-wiring umount to it.
Signed-off-by: Max Filippov <jcmvbkbc at gmail.com>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
arch/xtensa/include/uapi/asm/unistd.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/xtensa/include/uapi/asm/unistd.h b/arch/xtensa/include/uapi/asm/unistd.h
index 51940fe..513effd 100644
--- a/arch/xtensa/include/uapi/asm/unistd.h
+++ b/arch/xtensa/include/uapi/asm/unistd.h
@@ -384,7 +384,8 @@ __SYSCALL(174, sys_chroot, 1)
#define __NR_pivot_root 175
__SYSCALL(175, sys_pivot_root, 2)
#define __NR_umount 176
-__SYSCALL(176, sys_umount, 2)
+__SYSCALL(176, sys_oldumount, 1)
+#define __ARCH_WANT_SYS_OLDUMOUNT
#define __NR_swapoff 177
__SYSCALL(177, sys_swapoff, 1)
#define __NR_sync 178
--
1.9.1
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