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author | Matthew Heon <matthew.heon@gmail.com> | 2017-11-01 11:24:59 -0400 |
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committer | Matthew Heon <matthew.heon@gmail.com> | 2017-11-01 11:24:59 -0400 |
commit | a031b83a09a8628435317a03f199cdc18b78262f (patch) | |
tree | bc017a96769ce6de33745b8b0b1304ccf38e9df0 /vendor/golang.org/x/sys/unix/sockcmsg_linux.go | |
parent | 2b74391cd5281f6fdf391ff8ad50fd1490f6bf89 (diff) | |
download | podman-a031b83a09a8628435317a03f199cdc18b78262f.tar.gz podman-a031b83a09a8628435317a03f199cdc18b78262f.tar.bz2 podman-a031b83a09a8628435317a03f199cdc18b78262f.zip |
Initial checkin from CRI-O repo
Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
Diffstat (limited to 'vendor/golang.org/x/sys/unix/sockcmsg_linux.go')
-rw-r--r-- | vendor/golang.org/x/sys/unix/sockcmsg_linux.go | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/vendor/golang.org/x/sys/unix/sockcmsg_linux.go b/vendor/golang.org/x/sys/unix/sockcmsg_linux.go new file mode 100644 index 000000000..d9ff4731a --- /dev/null +++ b/vendor/golang.org/x/sys/unix/sockcmsg_linux.go @@ -0,0 +1,36 @@ +// 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. + +// Socket control messages + +package unix + +import "unsafe" + +// UnixCredentials encodes credentials into a socket control message +// for sending to another process. This can be used for +// authentication. +func UnixCredentials(ucred *Ucred) []byte { + b := make([]byte, CmsgSpace(SizeofUcred)) + h := (*Cmsghdr)(unsafe.Pointer(&b[0])) + h.Level = SOL_SOCKET + h.Type = SCM_CREDENTIALS + h.SetLen(CmsgLen(SizeofUcred)) + *((*Ucred)(cmsgData(h))) = *ucred + return b +} + +// ParseUnixCredentials decodes a socket control message that contains +// credentials in a Ucred structure. To receive such a message, the +// SO_PASSCRED option must be enabled on the socket. +func ParseUnixCredentials(m *SocketControlMessage) (*Ucred, error) { + if m.Header.Level != SOL_SOCKET { + return nil, EINVAL + } + if m.Header.Type != SCM_CREDENTIALS { + return nil, EINVAL + } + ucred := *(*Ucred)(unsafe.Pointer(&m.Data[0])) + return &ucred, nil +} |