From eefa817cfdb04ff07e7069396f21bd6ba2c89957 Mon Sep 17 00:00:00 2001
From: Andrei Vagin <avagin@google.com>
Date: Thu, 18 Jul 2019 15:39:47 -0700
Subject: net/tcp/setockopt: impelment setsockopt(fd, SOL_TCP, TCP_INQ)
PiperOrigin-RevId: 258859507
---
pkg/sentry/socket/control/control.go | 16 ++++++++++++++--
1 file changed, 14 insertions(+), 2 deletions(-)
(limited to 'pkg/sentry/socket/control')
diff --git a/pkg/sentry/socket/control/control.go b/pkg/sentry/socket/control/control.go
index 4f4a20dfe..4e95101b7 100644
--- a/pkg/sentry/socket/control/control.go
+++ b/pkg/sentry/socket/control/control.go
@@ -225,14 +225,14 @@ func putCmsg(buf []byte, flags int, msgType uint32, align uint, data []int32) ([
return alignSlice(buf, align), flags
}
-func putCmsgStruct(buf []byte, msgType uint32, align uint, data interface{}) []byte {
+func putCmsgStruct(buf []byte, msgLevel, msgType uint32, align uint, data interface{}) []byte {
if cap(buf)-len(buf) < linux.SizeOfControlMessageHeader {
return buf
}
ob := buf
buf = putUint64(buf, uint64(linux.SizeOfControlMessageHeader))
- buf = putUint32(buf, linux.SOL_SOCKET)
+ buf = putUint32(buf, msgLevel)
buf = putUint32(buf, msgType)
hdrBuf := buf
@@ -307,12 +307,24 @@ func alignSlice(buf []byte, align uint) []byte {
func PackTimestamp(t *kernel.Task, timestamp int64, buf []byte) []byte {
return putCmsgStruct(
buf,
+ linux.SOL_SOCKET,
linux.SO_TIMESTAMP,
t.Arch().Width(),
linux.NsecToTimeval(timestamp),
)
}
+// PackInq packs a TCP_INQ socket control message.
+func PackInq(t *kernel.Task, inq int32, buf []byte) []byte {
+ return putCmsgStruct(
+ buf,
+ linux.SOL_TCP,
+ linux.TCP_INQ,
+ 4,
+ inq,
+ )
+}
+
// Parse parses a raw socket control message into portable objects.
func Parse(t *kernel.Task, socketOrEndpoint interface{}, buf []byte) (transport.ControlMessages, error) {
var (
--
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