diff --git a/system/ulib/zxs/include/lib/zxs/inception.h b/system/ulib/zxs/include/lib/zxs/inception.h
deleted file mode 100644
index 4873b11ce2b8f8c7d2b8c53902bb853475d651ab..0000000000000000000000000000000000000000
--- a/system/ulib/zxs/include/lib/zxs/inception.h
+++ /dev/null
@@ -1,49 +0,0 @@
-// Copyright 2018 The Fuchsia Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef LIB_ZXS_INCEPTION_H_
-#define LIB_ZXS_INCEPTION_H_
-
-// This header will be removed once all the socket protocol code is refactored
-// from fdio to zxs.
-
-#include <stdint.h>
-#include <sys/types.h>
-#include <zircon/compiler.h>
-#include <zircon/types.h>
-
-__BEGIN_CDECLS
-
-#define ZXSIO_PAYLOAD_SZ 900
-
-typedef struct zxsio_msg zxsio_msg_t;
-
-// TODO: most of these fields will end up unused. Figure out which are needed.
-// For now, we keep them to preserve the message header format of zxrio_msg
-// to make the conversion process easier.
-struct zxsio_msg {
- zx_txid_t txid; // FIDL message header
- uint32_t reserved0;
- uint32_t flags;
- uint32_t op;
-
- uint32_t datalen; // size of data[]
- int32_t arg; // tx: argument, rx: return value
- union {
- int64_t off; // tx/rx: offset where needed
- uint32_t mode; // tx: Open
- uint32_t protocol; // rx: Open
- uint32_t op; // tx: Ioctl
- } arg2;
- int32_t reserved1;
- uint32_t hcount; // number of valid handles
- zx_handle_t handle[4]; // up to 3 handles + reply channel handle
- uint8_t data[ZXSIO_PAYLOAD_SZ]; // payload
-};
-
-#define ZXSIO_HDR_SZ (__builtin_offsetof(zxsio_msg_t, data))
-
-__END_CDECLS
-
-#endif // LIB_ZXS_INCEPTION_H_
diff --git a/system/ulib/zxs/include/lib/zxs/protocol.h b/system/ulib/zxs/include/lib/zxs/protocol.h
index 82d7237379f6041ded4074ea9965879e2f3eaf3b..e34da65e1fee0114ca3079f5357d91758aaf5d01 100644
--- a/system/ulib/zxs/include/lib/zxs/protocol.h
+++ b/system/ulib/zxs/include/lib/zxs/protocol.h
@@ -14,11 +14,8 @@
__BEGIN_CDECLS
-#define ZXSIO_ONE_HANDLE 0x00000100
-
// SIO (Socket I/O)
#define ZXSIO_CLOSE 0x00000001
-#define ZXSIO_OPEN (0x00000003 | ZXSIO_ONE_HANDLE)
#define ZXSIO_IOCTL 0x0000000a
#define ZXSIO_CONNECT 0x00000010
#define ZXSIO_BIND 0x00000011
@@ -28,10 +25,7 @@ __BEGIN_CDECLS
#define ZXSIO_GETSOCKOPT 0x00000015
#define ZXSIO_SETSOCKOPT 0x00000016
-#define ZXSIO_SOCKET_DIR_NONE "none-v3"
-#define ZXSIO_SOCKET_DIR_SOCKET "socket-v3"
-
-// fdio signals
+// SIO signals
#define ZXSIO_SIGNAL_INCOMING ZX_USER_SIGNAL_0
#define ZXSIO_SIGNAL_OUTGOING ZX_USER_SIGNAL_1
#define ZXSIO_SIGNAL_ERROR ZX_USER_SIGNAL_2
@@ -54,15 +48,32 @@ typedef struct zxrio_sockopt_req_reply {
socklen_t optlen;
} zxrio_sockopt_req_reply_t;
-// wire format for datagram messages
-typedef struct fdio_socket_msg {
- struct sockaddr_storage addr;
- socklen_t addrlen;
- int32_t flags;
- char data[1]; // variable size
-} fdio_socket_msg_t;
+#define ZXSIO_PAYLOAD_SZ 900
+
+// TODO: most of these fields will end up unused. Figure out which are needed.
+// For now, we keep them to preserve the message header format of zxrio_msg
+// to make the conversion process easier.
+typedef struct zxsio_msg {
+ zx_txid_t txid; // FIDL message header
+ uint32_t reserved0;
+ uint32_t flags;
+ uint32_t op;
+
+ uint32_t datalen; // size of data[]
+ int32_t arg; // tx: argument, rx: return value
+ union {
+ int64_t off; // tx/rx: offset where needed
+ uint32_t mode; // tx: Open
+ uint32_t protocol; // rx: Open
+ uint32_t op; // tx: Ioctl
+ } arg2;
+ int32_t reserved1;
+ uint32_t hcount; // number of valid handles
+ zx_handle_t handle[4]; // up to 3 handles + reply channel handle
+ uint8_t data[ZXSIO_PAYLOAD_SZ]; // payload
+} zxsio_msg_t;
-#define FDIO_SOCKET_MSG_HEADER_SIZE offsetof(fdio_socket_msg_t, data)
+#define ZXSIO_HDR_SZ (__builtin_offsetof(zxsio_msg_t, data))
__END_CDECLS
diff --git a/system/ulib/zxs/zxs.cpp b/system/ulib/zxs/zxs.cpp
index c9d8dd91719b34fe5ff83c460be281c0f1900570..0e0135bc24af955753612848bc33f32a15879013 100644
--- a/system/ulib/zxs/zxs.cpp
+++ b/system/ulib/zxs/zxs.cpp
@@ -4,7 +4,6 @@
#include <fuchsia/net/c/fidl.h>
#include <lib/zx/socket.h>
-#include <lib/zxs/inception.h>
#include <lib/zxs/protocol.h>
#include <lib/zxs/zxs.h>
#include <stdlib.h>
@@ -13,6 +12,16 @@
#include <zircon/device/ioctl.h>
#include <zircon/syscalls.h>
+// wire format for datagram messages
+typedef struct fdio_socket_msg {
+ struct sockaddr_storage addr;
+ socklen_t addrlen;
+ int32_t flags;
+ char data[1]; // variable size
+} fdio_socket_msg_t;
+
+#define FDIO_SOCKET_MSG_HEADER_SIZE offsetof(fdio_socket_msg_t, data)
+
static bool is_rio_message_valid(zxsio_msg_t* msg) {
if ((msg->datalen > ZXSIO_PAYLOAD_SZ) ||
(msg->hcount > 0)) {
diff --git a/system/utest/zxs/zxs-test.cpp b/system/utest/zxs/zxs-test.cpp
index 1b647bffa1d15462477f7c19c80c7f74b71b8525..d6f16ec30d5716097620221f1f0cf7fd15bfd041 100644
--- a/system/utest/zxs/zxs-test.cpp
+++ b/system/utest/zxs/zxs-test.cpp
@@ -6,7 +6,6 @@
#include <lib/async-loop/loop.h>
#include <lib/async/cpp/wait.h>
#include <lib/zx/socket.h>
-#include <lib/zxs/inception.h>
#include <lib/zxs/protocol.h>
#include <lib/zxs/zxs.h>
#include <string.h>
@@ -157,7 +156,6 @@ static zx_status_t handle_message(async_dispatcher_t* dispatcher,
memcpy(reply.data, "abcd", reply.datalen);
break;
}
- case ZXSIO_OPEN:
default:
return ZX_ERR_STOP;
}