mirror of
https://github.com/vbatts/tar-split.git
synced 2024-09-27 12:44:01 +00:00
Vincent Batts
ec6b1ae20e
There is a discrepancy of behavior of `github.com/urfave/cli` between using go1.12 and go1.15, when the dependency is not present as vendored source. Now this builds fine with go1.12 There are users of tar-split as a package. It is the hope that by adding this vendored source it does not impact them depending on tar-split itself. Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>
36 lines
1 KiB
Go
36 lines
1 KiB
Go
// 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)(h.data(0)) = *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
|
|
}
|