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Diffstat (limited to 'vendor/golang.org/x/sys/unix/sockcmsg_unix.go')
-rw-r--r--vendor/golang.org/x/sys/unix/sockcmsg_unix.go104
1 files changed, 0 insertions, 104 deletions
diff --git a/vendor/golang.org/x/sys/unix/sockcmsg_unix.go b/vendor/golang.org/x/sys/unix/sockcmsg_unix.go
deleted file mode 100644
index f153c06..0000000
--- a/vendor/golang.org/x/sys/unix/sockcmsg_unix.go
+++ /dev/null
@@ -1,104 +0,0 @@
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
-
-// Socket control messages
-
-package unix
-
-import "unsafe"
-
-// Round the length of a raw sockaddr up to align it properly.
-func cmsgAlignOf(salen int) int {
- salign := sizeofPtr
- // NOTE: It seems like 64-bit Darwin, DragonFly BSD and
- // Solaris kernels still require 32-bit aligned access to
- // network subsystem.
- if darwin64Bit || dragonfly64Bit || solaris64Bit {
- salign = 4
- }
- return (salen + salign - 1) & ^(salign - 1)
-}
-
-// CmsgLen returns the value to store in the Len field of the Cmsghdr
-// structure, taking into account any necessary alignment.
-func CmsgLen(datalen int) int {
- return cmsgAlignOf(SizeofCmsghdr) + datalen
-}
-
-// CmsgSpace returns the number of bytes an ancillary element with
-// payload of the passed data length occupies.
-func CmsgSpace(datalen int) int {
- return cmsgAlignOf(SizeofCmsghdr) + cmsgAlignOf(datalen)
-}
-
-func cmsgData(h *Cmsghdr) unsafe.Pointer {
- return unsafe.Pointer(uintptr(unsafe.Pointer(h)) + uintptr(cmsgAlignOf(SizeofCmsghdr)))
-}
-
-// SocketControlMessage represents a socket control message.
-type SocketControlMessage struct {
- Header Cmsghdr
- Data []byte
-}
-
-// ParseSocketControlMessage parses b as an array of socket control
-// messages.
-func ParseSocketControlMessage(b []byte) ([]SocketControlMessage, error) {
- var msgs []SocketControlMessage
- i := 0
- for i+CmsgLen(0) <= len(b) {
- h, dbuf, err := socketControlMessageHeaderAndData(b[i:])
- if err != nil {
- return nil, err
- }
- m := SocketControlMessage{Header: *h, Data: dbuf}
- msgs = append(msgs, m)
- i += cmsgAlignOf(int(h.Len))
- }
- return msgs, nil
-}
-
-func socketControlMessageHeaderAndData(b []byte) (*Cmsghdr, []byte, error) {
- h := (*Cmsghdr)(unsafe.Pointer(&b[0]))
- if h.Len < SizeofCmsghdr || uint64(h.Len) > uint64(len(b)) {
- return nil, nil, EINVAL
- }
- return h, b[cmsgAlignOf(SizeofCmsghdr):h.Len], nil
-}
-
-// UnixRights encodes a set of open file descriptors into a socket
-// control message for sending to another process.
-func UnixRights(fds ...int) []byte {
- datalen := len(fds) * 4
- b := make([]byte, CmsgSpace(datalen))
- h := (*Cmsghdr)(unsafe.Pointer(&b[0]))
- h.Level = SOL_SOCKET
- h.Type = SCM_RIGHTS
- h.SetLen(CmsgLen(datalen))
- data := cmsgData(h)
- for _, fd := range fds {
- *(*int32)(data) = int32(fd)
- data = unsafe.Pointer(uintptr(data) + 4)
- }
- return b
-}
-
-// ParseUnixRights decodes a socket control message that contains an
-// integer array of open file descriptors from another process.
-func ParseUnixRights(m *SocketControlMessage) ([]int, error) {
- if m.Header.Level != SOL_SOCKET {
- return nil, EINVAL
- }
- if m.Header.Type != SCM_RIGHTS {
- return nil, EINVAL
- }
- fds := make([]int, len(m.Data)>>2)
- for i, j := 0, 0; i < len(m.Data); i += 4 {
- fds[j] = int(*(*int32)(unsafe.Pointer(&m.Data[i])))
- j++
- }
- return fds, nil
-}