Implement tap/tun device in vfs.

PiperOrigin-RevId: 296526279

1 files changed, 29 insertions, 0 deletions

diff --git a/pkg/abi/linux/ioctl_tun.go b/pkg/abi/linux/ioctl_tun.go
new file mode 100644
index 000000000..c59c9c136
--- /dev/null
+++ b/pkg/abi/linux/ioctl_tun.go
@@ -0,0 +1,29 @@
+// Copyright 2020 The gVisor Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package linux
+
+// ioctl(2) request numbers from linux/if_tun.h
+var (
+	TUNSETIFF = IOC(_IOC_WRITE, 'T', 202, 4)
+	TUNGETIFF = IOC(_IOC_READ, 'T', 210, 4)
+)
+
+// Flags from net/if_tun.h
+const (
+	IFF_TUN      = 0x0001
+	IFF_TAP      = 0x0002
+	IFF_NO_PI    = 0x1000
+	IFF_NOFILTER = 0x1000
+)