sysycall: remove creds_linux_test.go

It is unprecedented to add tests to package syscall, especially
system-specific ones. Not a policy worth changing right before Go 1
is cut.

The sole existing test, passfd_test.go, contains the line
        // +build linux darwin probablyfreebsd probablyopenbsd
which argues that this is not a subject to be undertaking likely.
Note that passfd_test.go also went in just now. It's the only test
in syscall.

Deleting for now, will reconsider after Go 1.

R=golang-dev, bradfitz, r, dsymonds
CC=golang-dev
https://golang.org/cl/5846063

1 files changed, 0 insertions, 107 deletions

diff --git a/src/pkg/syscall/creds_linux_test.go b/src/pkg/syscall/creds_linux_test.go
deleted file mode 100644
index c1ed98b707..0000000000
--- a/src/pkg/syscall/creds_linux_test.go
+++ /dev/null
@@ -1,107 +0,0 @@
-// Copyright 2012 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.
-
-package syscall_test
-
-import (
-	"bytes"
-	"net"
-	"os"
-	"syscall"
-	"testing"
-)
-
-// TestSCMCredentials tests the sending and receiving of credentials
-// (PID, UID, GID) in an ancillary message between two UNIX
-// sockets. The SO_PASSCRED socket option is enabled on the sending
-// socket for this to work.
-func TestSCMCredentials(t *testing.T) {
-	fds, err := syscall.Socketpair(syscall.AF_LOCAL, syscall.SOCK_STREAM, 0)
-	if err != nil {
-		t.Fatalf("Socketpair: %v", err)
-	}
-	defer syscall.Close(fds[0])
-	defer syscall.Close(fds[1])
-
-	err = syscall.SetsockoptInt(fds[0], syscall.SOL_SOCKET, syscall.SO_PASSCRED, 1)
-	if err != nil {
-		t.Fatalf("SetsockoptInt: %v", err)
-	}
-
-	srv, err := net.FileConn(os.NewFile(uintptr(fds[0]), ""))
-	if err != nil {
-		t.Errorf("FileConn: %v", err)
-		return
-	}
-	defer srv.Close()
-
-	cli, err := net.FileConn(os.NewFile(uintptr(fds[1]), ""))
-	if err != nil {
-		t.Errorf("FileConn: %v", err)
-		return
-	}
-	defer cli.Close()
-
-	var ucred syscall.Ucred
-	if os.Getuid() != 0 {
-		ucred.Pid = int32(os.Getpid())
-		ucred.Uid = 0
-		ucred.Gid = 0
-		oob := syscall.UnixCredentials(&ucred)
-		_, _, err := cli.(*net.UnixConn).WriteMsgUnix(nil, oob, nil)
-		if err.(*net.OpError).Err != syscall.EPERM {
-			t.Fatalf("WriteMsgUnix failed with %v, want EPERM", err)
-		}
-	}
-
-	ucred.Pid = int32(os.Getpid())
-	ucred.Uid = uint32(os.Getuid())
-	ucred.Gid = uint32(os.Getgid())
-	oob := syscall.UnixCredentials(&ucred)
-
-	// this is going to send a dummy byte
-	n, oobn, err := cli.(*net.UnixConn).WriteMsgUnix(nil, oob, nil)
-	if err != nil {
-		t.Fatalf("WriteMsgUnix: %v", err)
-	}
-	if n != 0 {
-		t.Fatalf("WriteMsgUnix n = %d, want 0", n)
-	}
-	if oobn != len(oob) {
-		t.Fatalf("WriteMsgUnix oobn = %d, want %d", oobn, len(oob))
-	}
-
-	oob2 := make([]byte, 10*len(oob))
-	n, oobn2, flags, _, err := srv.(*net.UnixConn).ReadMsgUnix(nil, oob2)
-	if err != nil {
-		t.Fatalf("ReadMsgUnix: %v", err)
-	}
-	if flags != 0 {
-		t.Fatalf("ReadMsgUnix flags = 0x%x, want 0", flags)
-	}
-	if n != 1 {
-		t.Fatalf("ReadMsgUnix n = %d, want 1 (dummy byte)", n)
-	}
-	if oobn2 != oobn {
-		// without SO_PASSCRED set on the socket, the ReadMsgUnix will
-		// return zero oob bytes
-		t.Fatalf("ReadMsgUnix oobn = %d, want %d", oobn2, oobn)
-	}
-	oob2 = oob2[:oobn2]
-	if !bytes.Equal(oob, oob2) {
-		t.Fatal("ReadMsgUnix oob bytes don't match")
-	}
-
-	scm, err := syscall.ParseSocketControlMessage(oob2)
-	if err != nil {
-		t.Fatalf("ParseSocketControlMessage: %v", err)
-	}
-	newUcred, err := syscall.ParseUnixCredentials(&scm[0])
-	if err != nil {
-		t.Fatalf("ParseUnixCredentials: %v", err)
-	}
-	if *newUcred != ucred {
-		t.Fatalf("ParseUnixCredentials = %+v, want %+v", newUcred, ucred)
-	}
-}