[S390] wire up preadv/pwritev system calls

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

3 files changed, 23 insertions, 1 deletions

diff --git a/arch/s390/include/asm/unistd.h b/arch/s390/include/asm/unistd.h
index c8ad350d1444..f0f19e6ace6c 100644
--- a/arch/s390/include/asm/unistd.h
+++ b/arch/s390/include/asm/unistd.h
@@ -265,7 +265,9 @@
 #define __NR_pipe2              325
 #define __NR_dup3               326
 #define __NR_epoll_create1      327
-#define NR_syscalls 328
+#define __NR_preadv             328
+#define __NR_pwritev            329
+#define NR_syscalls 330
 
 /* 
  * There are some system calls that are not present on 64 bit, some
diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S
index 87cf5a79a351..fb38af6316bb 100644
--- a/arch/s390/kernel/compat_wrapper.S
+++ b/arch/s390/kernel/compat_wrapper.S
@@ -1805,3 +1805,21 @@ compat_sys_keyctl_wrapper:
         llgfr   %r5,%r5                 # u32
         llgfr   %r6,%r6                 # u32
         jg      compat_sys_keyctl       # branch to system call
+
+        .globl  compat_sys_preadv_wrapper
+compat_sys_preadv_wrapper:
+        llgfr   %r2,%r2                 # unsigned long
+        llgtr   %r3,%r3                 # compat_iovec *
+        llgfr   %r4,%r4                 # unsigned long
+        llgfr   %r5,%r5                 # u32
+        llgfr   %r6,%r6                 # u32
+        jg      compat_sys_preadv       # branch to system call
+
+        .globl  compat_sys_pwritev_wrapper
+compat_sys_pwritev_wrapper:
+        llgfr   %r2,%r2                 # unsigned long
+        llgtr   %r3,%r3                 # compat_iovec *
+        llgfr   %r4,%r4                 # unsigned long
+        llgfr   %r5,%r5                 # u32
+        llgfr   %r6,%r6                 # u32
+        jg      compat_sys_pwritev      # branch to system call
diff --git a/arch/s390/kernel/syscalls.S b/arch/s390/kernel/syscalls.S
index fe5b25a988ab..2c7739fe70b1 100644
--- a/arch/s390/kernel/syscalls.S
+++ b/arch/s390/kernel/syscalls.S
@@ -336,3 +336,5 @@ SYSCALL(sys_inotify_init1,sys_inotify_init1,sys_inotify_init1_wrapper)
 SYSCALL(sys_pipe2,sys_pipe2,sys_pipe2_wrapper) /* 325 */
 SYSCALL(sys_dup3,sys_dup3,sys_dup3_wrapper)
 SYSCALL(sys_epoll_create1,sys_epoll_create1,sys_epoll_create1_wrapper)
+SYSCALL(sys_preadv,sys_preadv,compat_sys_preadv_wrapper)
+SYSCALL(sys_pwritev,sys_pwritev,compat_sys_pwritev_wrapper)