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

3 files changed, 0 insertions, 264 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)
-}
diff --git a/vendor/github.com/opencontainers/runc/libcontainer/utils/utils.go b/vendor/github.com/opencontainers/runc/libcontainer/utils/utils.go
deleted file mode 100644
index baa54c9ba..000000000
--- a/vendor/github.com/opencontainers/runc/libcontainer/utils/utils.go
+++ /dev/null
@@ -1,127 +0,0 @@
-package utils
-
-import (
-	"crypto/rand"
-	"encoding/hex"
-	"encoding/json"
-	"io"
-	"os"
-	"path/filepath"
-	"strings"
-	"unsafe"
-
-	"golang.org/x/sys/unix"
-)
-
-const (
-	exitSignalOffset = 128
-)
-
-// GenerateRandomName returns a new name joined with a prefix.  This size
-// specified is used to truncate the randomly generated value
-func GenerateRandomName(prefix string, size int) (string, error) {
-	id := make([]byte, 32)
-	if _, err := io.ReadFull(rand.Reader, id); err != nil {
-		return "", err
-	}
-	if size > 64 {
-		size = 64
-	}
-	return prefix + hex.EncodeToString(id)[:size], nil
-}
-
-// ResolveRootfs ensures that the current working directory is
-// not a symlink and returns the absolute path to the rootfs
-func ResolveRootfs(uncleanRootfs string) (string, error) {
-	rootfs, err := filepath.Abs(uncleanRootfs)
-	if err != nil {
-		return "", err
-	}
-	return filepath.EvalSymlinks(rootfs)
-}
-
-// ExitStatus returns the correct exit status for a process based on if it
-// was signaled or exited cleanly
-func ExitStatus(status unix.WaitStatus) int {
-	if status.Signaled() {
-		return exitSignalOffset + int(status.Signal())
-	}
-	return status.ExitStatus()
-}
-
-// WriteJSON writes the provided struct v to w using standard json marshaling
-func WriteJSON(w io.Writer, v interface{}) error {
-	data, err := json.Marshal(v)
-	if err != nil {
-		return err
-	}
-	_, err = w.Write(data)
-	return err
-}
-
-// CleanPath makes a path safe for use with filepath.Join. This is done by not
-// only cleaning the path, but also (if the path is relative) adding a leading
-// '/' and cleaning it (then removing the leading '/'). This ensures that a
-// path resulting from prepending another path will always resolve to lexically
-// be a subdirectory of the prefixed path. This is all done lexically, so paths
-// that include symlinks won't be safe as a result of using CleanPath.
-func CleanPath(path string) string {
-	// Deal with empty strings nicely.
-	if path == "" {
-		return ""
-	}
-
-	// Ensure that all paths are cleaned (especially problematic ones like
-	// "/../../../../../" which can cause lots of issues).
-	path = filepath.Clean(path)
-
-	// If the path isn't absolute, we need to do more processing to fix paths
-	// such as "../../../../<etc>/some/path". We also shouldn't convert absolute
-	// paths to relative ones.
-	if !filepath.IsAbs(path) {
-		path = filepath.Clean(string(os.PathSeparator) + path)
-		// This can't fail, as (by definition) all paths are relative to root.
-		path, _ = filepath.Rel(string(os.PathSeparator), path)
-	}
-
-	// Clean the path again for good measure.
-	return filepath.Clean(path)
-}
-
-// SearchLabels searches a list of key-value pairs for the provided key and
-// returns the corresponding value. The pairs must be separated with '='.
-func SearchLabels(labels []string, query string) string {
-	for _, l := range labels {
-		parts := strings.SplitN(l, "=", 2)
-		if len(parts) < 2 {
-			continue
-		}
-		if parts[0] == query {
-			return parts[1]
-		}
-	}
-	return ""
-}
-
-// Annotations returns the bundle path and user defined annotations from the
-// libcontainer state.  We need to remove the bundle because that is a label
-// added by libcontainer.
-func Annotations(labels []string) (bundle string, userAnnotations map[string]string) {
-	userAnnotations = make(map[string]string)
-	for _, l := range labels {
-		parts := strings.SplitN(l, "=", 2)
-		if len(parts) < 2 {
-			continue
-		}
-		if parts[0] == "bundle" {
-			bundle = parts[1]
-		} else {
-			userAnnotations[parts[0]] = parts[1]
-		}
-	}
-	return
-}
-
-func GetIntSize() int {
-	return int(unsafe.Sizeof(1))
-}
diff --git a/vendor/github.com/opencontainers/runc/libcontainer/utils/utils_unix.go b/vendor/github.com/opencontainers/runc/libcontainer/utils/utils_unix.go
deleted file mode 100644
index c96088988..000000000
--- a/vendor/github.com/opencontainers/runc/libcontainer/utils/utils_unix.go
+++ /dev/null
@@ -1,44 +0,0 @@
-// +build !windows
-
-package utils
-
-import (
-	"io/ioutil"
-	"os"
-	"strconv"
-
-	"golang.org/x/sys/unix"
-)
-
-func CloseExecFrom(minFd int) error {
-	fdList, err := ioutil.ReadDir("/proc/self/fd")
-	if err != nil {
-		return err
-	}
-	for _, fi := range fdList {
-		fd, err := strconv.Atoi(fi.Name())
-		if err != nil {
-			// ignore non-numeric file names
-			continue
-		}
-
-		if fd < minFd {
-			// ignore descriptors lower than our specified minimum
-			continue
-		}
-
-		// intentionally ignore errors from unix.CloseOnExec
-		unix.CloseOnExec(fd)
-		// the cases where this might fail are basically file descriptors that have already been closed (including and especially the one that was created when ioutil.ReadDir did the "opendir" syscall)
-	}
-	return nil
-}
-
-// NewSockPair returns a new unix socket pair
-func NewSockPair(name string) (parent *os.File, child *os.File, err error) {
-	fds, err := unix.Socketpair(unix.AF_LOCAL, unix.SOCK_STREAM|unix.SOCK_CLOEXEC, 0)
-	if err != nil {
-		return nil, nil, err
-	}
-	return os.NewFile(uintptr(fds[1]), name+"-p"), os.NewFile(uintptr(fds[0]), name+"-c"), nil
-}