Jacek Caban : rpcrt4: Simplify rpcrt4_conn_np_write implementation.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: f62b9d69ae06df67cce3e0b6d7eb2a5470470290
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=f62b9d69ae06df67cce3e0b6d7eb2a5470470290

Author: Jacek Caban <jacek at codeweavers.com>
Date:   Mon May 22 16:03:46 2017 +0200

rpcrt4: Simplify rpcrt4_conn_np_write implementation.

There is no need for the loop. Named pipes always do complete writes.
Also use NtWriteFile like we do for reading to not mess with GetLastError().

Signed-off-by: Jacek Caban <jacek at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/rpcrt4/rpc_transport.c | 26 ++++++++++----------------
 1 file changed, 10 insertions(+), 16 deletions(-)

diff --git a/dlls/rpcrt4/rpc_transport.c b/dlls/rpcrt4/rpc_transport.c
index 60975ca..bc2f4a3 100644
--- a/dlls/rpcrt4/rpc_transport.c
+++ b/dlls/rpcrt4/rpc_transport.c
@@ -429,24 +429,18 @@ static int rpcrt4_conn_np_read(RpcConnection *Connection,
   return count;
 }
 
-static int rpcrt4_conn_np_write(RpcConnection *Connection,
-                             const void *buffer, unsigned int count)
+static int rpcrt4_conn_np_write(RpcConnection *conn, const void *buffer, unsigned int count)
 {
-  RpcConnection_np *npc = (RpcConnection_np *) Connection;
-  const char *buf = buffer;
-  BOOL ret = TRUE;
-  unsigned int bytes_left = count;
+    RpcConnection_np *connection = (RpcConnection_np *) conn;
+    IO_STATUS_BLOCK io_status;
+    NTSTATUS status;
 
-  while (bytes_left)
-  {
-    DWORD bytes_written;
-    ret = WriteFile(npc->pipe, buf, bytes_left, &bytes_written, NULL);
-    if (!ret || !bytes_written)
-        break;
-    bytes_left -= bytes_written;
-    buf += bytes_written;
-  }
-  return ret ? count : -1;
+    status = NtWriteFile(connection->pipe, NULL, NULL, NULL, &io_status, buffer, count, NULL, NULL);
+    if (status)
+        return -1;
+
+    assert(io_status.Information == count);
+    return count;
 }
 
 static int rpcrt4_conn_np_close(RpcConnection *Connection)