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xtensa: re-wire umount syscall to sys_oldumount

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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.

Cc: stable@vger.kernel.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
This commit is contained in:
Max Filippov 2014-10-06 21:01:17 +04:00
parent 61e47e9b53
commit 2651cc6974
1 changed files with 2 additions and 1 deletions
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3
arch/xtensa/include/uapi/asm/unistd.h
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@ -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