Remove unused runc files

We no longer use runc code to read network I/O usage. This lets
us remove a lot of vendored code.

Signed-off-by: Matthew Heon <matthew.heon@gmail.com>

Closes: #425
Approved by: rhatdan

1 files changed, 0 insertions, 93 deletions

diff --git a/vendor/github.com/opencontainers/runc/libcontainer/utils/cmsg.go b/vendor/github.com/opencontainers/runc/libcontainer/utils/cmsg.go
deleted file mode 100644
index c8a9364d5..000000000
--- a/vendor/github.com/opencontainers/runc/libcontainer/utils/cmsg.go
+++ /dev/null
@@ -1,93 +0,0 @@
-// +build linux
-
-package utils
-
-/*
- * Copyright 2016, 2017 SUSE LLC
- *
- * 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.
- */
-
-import (
-	"fmt"
-	"os"
-
-	"golang.org/x/sys/unix"
-)
-
-// MaxSendfdLen is the maximum length of the name of a file descriptor being
-// sent using SendFd. The name of the file handle returned by RecvFd will never
-// be larger than this value.
-const MaxNameLen = 4096
-
-// oobSpace is the size of the oob slice required to store a single FD. Note
-// that unix.UnixRights appears to make the assumption that fd is always int32,
-// so sizeof(fd) = 4.
-var oobSpace = unix.CmsgSpace(4)
-
-// RecvFd waits for a file descriptor to be sent over the given AF_UNIX
-// socket. The file name of the remote file descriptor will be recreated
-// locally (it is sent as non-auxiliary data in the same payload).
-func RecvFd(socket *os.File) (*os.File, error) {
-	// For some reason, unix.Recvmsg uses the length rather than the capacity
-	// when passing the msg_controllen and other attributes to recvmsg.  So we
-	// have to actually set the length.
-	name := make([]byte, MaxNameLen)
-	oob := make([]byte, oobSpace)
-
-	sockfd := socket.Fd()
-	n, oobn, _, _, err := unix.Recvmsg(int(sockfd), name, oob, 0)
-	if err != nil {
-		return nil, err
-	}
-
-	if n >= MaxNameLen || oobn != oobSpace {
-		return nil, fmt.Errorf("recvfd: incorrect number of bytes read (n=%d oobn=%d)", n, oobn)
-	}
-
-	// Truncate.
-	name = name[:n]
-	oob = oob[:oobn]
-
-	scms, err := unix.ParseSocketControlMessage(oob)
-	if err != nil {
-		return nil, err
-	}
-	if len(scms) != 1 {
-		return nil, fmt.Errorf("recvfd: number of SCMs is not 1: %d", len(scms))
-	}
-	scm := scms[0]
-
-	fds, err := unix.ParseUnixRights(&scm)
-	if err != nil {
-		return nil, err
-	}
-	if len(fds) != 1 {
-		return nil, fmt.Errorf("recvfd: number of fds is not 1: %d", len(fds))
-	}
-	fd := uintptr(fds[0])
-
-	return os.NewFile(fd, string(name)), nil
-}
-
-// SendFd sends a file descriptor over the given AF_UNIX socket. In
-// addition, the file.Name() of the given file will also be sent as
-// non-auxiliary data in the same payload (allowing to send contextual
-// information for a file descriptor).
-func SendFd(socket *os.File, name string, fd uintptr) error {
-	if len(name) >= MaxNameLen {
-		return fmt.Errorf("sendfd: filename too long: %s", name)
-	}
-	oob := unix.UnixRights(int(fd))
-	return unix.Sendmsg(int(socket.Fd()), []byte(name), oob, nil, 0)
-}