mirror of
https://github.com/rwinkhart/sys.git
synced 2026-08-28 04:46:44 -04:00
unix: add support for zos/s390x
This adds sys/unix support for zos/s390x. These changes should not affect other platforms. Fixes golang/go#43230 Change-Id: If1c1d9df134fbc44f95ca1b214e836508696da93 Reviewed-on: https://go-review.googlesource.com/c/sys/+/275992 Trust: Emmanuel Odeke <emmanuel@orijtech.com> Trust: Tobias Klauser <tobias.klauser@gmail.com> Run-TryBot: Emmanuel Odeke <emmanuel@orijtech.com> Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com> Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
billofarrell
committed by
Emmanuel Odeke
Emmanuel Odeke
parent
eede4237b3
commit
5640770f5e
@@ -0,0 +1,608 @@
|
||||
// Copyright 2020 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.
|
||||
|
||||
//go:build zos && s390x
|
||||
// +build zos,s390x
|
||||
|
||||
package unix_test
|
||||
|
||||
import (
|
||||
"flag"
|
||||
"fmt"
|
||||
"io/ioutil"
|
||||
"net"
|
||||
"os"
|
||||
"os/exec"
|
||||
"path/filepath"
|
||||
"runtime"
|
||||
"strconv"
|
||||
"syscall"
|
||||
"testing"
|
||||
"time"
|
||||
|
||||
"golang.org/x/sys/unix"
|
||||
)
|
||||
|
||||
// Tests that below functions, structures and constants are consistent
|
||||
// on all Unix-like systems.
|
||||
func _() {
|
||||
// program scheduling priority functions and constants
|
||||
var (
|
||||
_ func(int, int, int) error = unix.Setpriority
|
||||
_ func(int, int) (int, error) = unix.Getpriority
|
||||
)
|
||||
const (
|
||||
_ int = unix.PRIO_USER
|
||||
_ int = unix.PRIO_PROCESS
|
||||
_ int = unix.PRIO_PGRP
|
||||
)
|
||||
|
||||
// termios constants
|
||||
const (
|
||||
_ int = unix.TCIFLUSH
|
||||
_ int = unix.TCIOFLUSH
|
||||
_ int = unix.TCOFLUSH
|
||||
)
|
||||
|
||||
// fcntl file locking structure and constants
|
||||
var (
|
||||
_ = unix.Flock_t{
|
||||
Type: int16(0),
|
||||
Whence: int16(0),
|
||||
Start: int64(0),
|
||||
Len: int64(0),
|
||||
Pid: int32(0),
|
||||
}
|
||||
)
|
||||
const (
|
||||
_ = unix.F_GETLK
|
||||
_ = unix.F_SETLK
|
||||
_ = unix.F_SETLKW
|
||||
)
|
||||
}
|
||||
|
||||
func TestErrnoSignalName(t *testing.T) {
|
||||
testErrors := []struct {
|
||||
num syscall.Errno
|
||||
name string
|
||||
}{
|
||||
{syscall.EPERM, "EDC5139I"},
|
||||
{syscall.EINVAL, "EDC5121I"},
|
||||
{syscall.ENOENT, "EDC5129I"},
|
||||
}
|
||||
|
||||
for _, te := range testErrors {
|
||||
t.Run(fmt.Sprintf("%d/%s", te.num, te.name), func(t *testing.T) {
|
||||
e := unix.ErrnoName(te.num)
|
||||
if e != te.name {
|
||||
t.Errorf("ErrnoName(%d) returned %s, want %s", te.num, e, te.name)
|
||||
}
|
||||
})
|
||||
}
|
||||
|
||||
testSignals := []struct {
|
||||
num syscall.Signal
|
||||
name string
|
||||
}{
|
||||
{syscall.SIGHUP, "SIGHUP"},
|
||||
{syscall.SIGPIPE, "SIGPIPE"},
|
||||
{syscall.SIGSEGV, "SIGSEGV"},
|
||||
}
|
||||
|
||||
for _, ts := range testSignals {
|
||||
t.Run(fmt.Sprintf("%d/%s", ts.num, ts.name), func(t *testing.T) {
|
||||
s := unix.SignalName(ts.num)
|
||||
if s != ts.name {
|
||||
t.Errorf("SignalName(%d) returned %s, want %s", ts.num, s, ts.name)
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
func TestSignalNum(t *testing.T) {
|
||||
testSignals := []struct {
|
||||
name string
|
||||
want syscall.Signal
|
||||
}{
|
||||
{"SIGHUP", syscall.SIGHUP},
|
||||
{"SIGPIPE", syscall.SIGPIPE},
|
||||
{"SIGSEGV", syscall.SIGSEGV},
|
||||
{"NONEXISTS", 0},
|
||||
}
|
||||
for _, ts := range testSignals {
|
||||
t.Run(fmt.Sprintf("%s/%d", ts.name, ts.want), func(t *testing.T) {
|
||||
got := unix.SignalNum(ts.name)
|
||||
if got != ts.want {
|
||||
t.Errorf("SignalNum(%s) returned %d, want %d", ts.name, got, ts.want)
|
||||
}
|
||||
})
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
func TestFcntlInt(t *testing.T) {
|
||||
t.Parallel()
|
||||
file, err := ioutil.TempFile("", "TestFnctlInt")
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
defer os.Remove(file.Name())
|
||||
defer file.Close()
|
||||
f := file.Fd()
|
||||
flags, err := unix.FcntlInt(f, unix.F_GETFD, 0)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if flags&unix.FD_CLOEXEC == 0 {
|
||||
t.Errorf("flags %#x do not include FD_CLOEXEC", flags)
|
||||
}
|
||||
}
|
||||
|
||||
// TestFcntlFlock tests whether the file locking structure matches
|
||||
// the calling convention of each kernel.
|
||||
func TestFcntlFlock(t *testing.T) {
|
||||
name := filepath.Join(os.TempDir(), "TestFcntlFlock")
|
||||
fd, err := unix.Open(name, unix.O_CREAT|unix.O_RDWR|unix.O_CLOEXEC, 0)
|
||||
if err != nil {
|
||||
t.Fatalf("Open failed: %v", err)
|
||||
}
|
||||
defer unix.Unlink(name)
|
||||
defer unix.Close(fd)
|
||||
flock := unix.Flock_t{
|
||||
Type: unix.F_RDLCK,
|
||||
Start: 0, Len: 0, Whence: 1,
|
||||
}
|
||||
if err := unix.FcntlFlock(uintptr(fd), unix.F_GETLK, &flock); err != nil {
|
||||
t.Fatalf("FcntlFlock failed: %v", err)
|
||||
}
|
||||
}
|
||||
|
||||
// TestPassFD tests passing a file descriptor over a Unix socket.
|
||||
//
|
||||
// This test involved both a parent and child process. The parent
|
||||
// process is invoked as a normal test, with "go test", which then
|
||||
// runs the child process by running the current test binary with args
|
||||
// "-test.run=^TestPassFD$" and an environment variable used to signal
|
||||
// that the test should become the child process instead.
|
||||
func TestPassFD(t *testing.T) {
|
||||
if runtime.GOOS == "darwin" && (runtime.GOARCH == "arm" || runtime.GOARCH == "arm64") {
|
||||
t.Skip("cannot exec subprocess on iOS, skipping test")
|
||||
}
|
||||
|
||||
if os.Getenv("GO_WANT_HELPER_PROCESS") == "1" {
|
||||
passFDChild()
|
||||
return
|
||||
}
|
||||
|
||||
if runtime.GOOS == "aix" {
|
||||
// Unix network isn't properly working on AIX
|
||||
// 7.2 with Technical Level < 2
|
||||
out, err := exec.Command("oslevel", "-s").Output()
|
||||
if err != nil {
|
||||
t.Skipf("skipping on AIX because oslevel -s failed: %v", err)
|
||||
}
|
||||
|
||||
if len(out) < len("7200-XX-ZZ-YYMM") { // AIX 7.2, Tech Level XX, Service Pack ZZ, date YYMM
|
||||
t.Skip("skipping on AIX because oslevel -s hasn't the right length")
|
||||
}
|
||||
aixVer := string(out[:4])
|
||||
tl, err := strconv.Atoi(string(out[5:7]))
|
||||
if err != nil {
|
||||
t.Skipf("skipping on AIX because oslevel -s output cannot be parsed: %v", err)
|
||||
}
|
||||
if aixVer < "7200" || (aixVer == "7200" && tl < 2) {
|
||||
t.Skip("skipped on AIX versions previous to 7.2 TL 2")
|
||||
}
|
||||
}
|
||||
|
||||
tempDir, err := ioutil.TempDir("", "TestPassFD")
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
defer os.RemoveAll(tempDir)
|
||||
|
||||
fds, err := unix.Socketpair(unix.AF_LOCAL, unix.SOCK_STREAM, 0)
|
||||
if err != nil {
|
||||
t.Fatalf("Socketpair: %v", err)
|
||||
}
|
||||
defer unix.Close(fds[0])
|
||||
defer unix.Close(fds[1])
|
||||
writeFile := os.NewFile(uintptr(fds[0]), "child-writes")
|
||||
readFile := os.NewFile(uintptr(fds[1]), "parent-reads")
|
||||
defer writeFile.Close()
|
||||
defer readFile.Close()
|
||||
|
||||
cmd := exec.Command(os.Args[0], "-test.run=^TestPassFD$", "--", tempDir)
|
||||
cmd.Env = []string{"GO_WANT_HELPER_PROCESS=1"}
|
||||
if lp := os.Getenv("LD_LIBRARY_PATH"); lp != "" {
|
||||
cmd.Env = append(cmd.Env, "LD_LIBRARY_PATH="+lp)
|
||||
}
|
||||
cmd.ExtraFiles = []*os.File{writeFile}
|
||||
|
||||
out, err := cmd.CombinedOutput()
|
||||
if len(out) > 0 || err != nil {
|
||||
t.Fatalf("child process: %q, %v", out, err)
|
||||
}
|
||||
|
||||
c, err := net.FileConn(readFile)
|
||||
if err != nil {
|
||||
t.Fatalf("FileConn: %v", err)
|
||||
}
|
||||
defer c.Close()
|
||||
|
||||
uc, ok := c.(*net.UnixConn)
|
||||
if !ok {
|
||||
t.Fatalf("unexpected FileConn type; expected UnixConn, got %T", c)
|
||||
}
|
||||
|
||||
buf := make([]byte, 32) // expect 1 byte
|
||||
oob := make([]byte, 32) // expect 24 bytes
|
||||
closeUnix := time.AfterFunc(5*time.Second, func() {
|
||||
t.Logf("timeout reading from unix socket")
|
||||
uc.Close()
|
||||
})
|
||||
_, oobn, _, _, err := uc.ReadMsgUnix(buf, oob)
|
||||
if err != nil {
|
||||
t.Fatalf("ReadMsgUnix: %v", err)
|
||||
}
|
||||
closeUnix.Stop()
|
||||
|
||||
scms, err := unix.ParseSocketControlMessage(oob[:oobn])
|
||||
if err != nil {
|
||||
t.Fatalf("ParseSocketControlMessage: %v", err)
|
||||
}
|
||||
if len(scms) != 1 {
|
||||
t.Fatalf("expected 1 SocketControlMessage; got scms = %#v", scms)
|
||||
}
|
||||
scm := scms[0]
|
||||
gotFds, err := unix.ParseUnixRights(&scm)
|
||||
if err != nil {
|
||||
t.Fatalf("unix.ParseUnixRights: %v", err)
|
||||
}
|
||||
if len(gotFds) != 1 {
|
||||
t.Fatalf("wanted 1 fd; got %#v", gotFds)
|
||||
}
|
||||
|
||||
f := os.NewFile(uintptr(gotFds[0]), "fd-from-child")
|
||||
defer f.Close()
|
||||
|
||||
got, err := ioutil.ReadAll(f)
|
||||
want := "Hello from child process!\n"
|
||||
if string(got) != want {
|
||||
t.Errorf("child process ReadAll: %q, %v; want %q", got, err, want)
|
||||
}
|
||||
}
|
||||
|
||||
// passFDChild is the child process used by TestPassFD.
|
||||
func passFDChild() {
|
||||
defer os.Exit(0)
|
||||
|
||||
// Look for our fd. It should be fd 3, but we work around an fd leak
|
||||
// bug here (http://golang.org/issue/2603) to let it be elsewhere.
|
||||
var uc *net.UnixConn
|
||||
for fd := uintptr(3); fd <= 10; fd++ {
|
||||
f := os.NewFile(fd, "unix-conn")
|
||||
var ok bool
|
||||
netc, _ := net.FileConn(f)
|
||||
uc, ok = netc.(*net.UnixConn)
|
||||
if ok {
|
||||
break
|
||||
}
|
||||
}
|
||||
if uc == nil {
|
||||
fmt.Println("failed to find unix fd")
|
||||
return
|
||||
}
|
||||
|
||||
// Make a file f to send to our parent process on uc.
|
||||
// We make it in tempDir, which our parent will clean up.
|
||||
flag.Parse()
|
||||
tempDir := flag.Arg(0)
|
||||
f, err := ioutil.TempFile(tempDir, "")
|
||||
if err != nil {
|
||||
fmt.Printf("TempFile: %v", err)
|
||||
return
|
||||
}
|
||||
|
||||
f.Write([]byte("Hello from child process!\n"))
|
||||
f.Seek(0, 0)
|
||||
|
||||
rights := unix.UnixRights(int(f.Fd()))
|
||||
dummyByte := []byte("x")
|
||||
n, oobn, err := uc.WriteMsgUnix(dummyByte, rights, nil)
|
||||
if err != nil {
|
||||
fmt.Printf("WriteMsgUnix: %v", err)
|
||||
return
|
||||
}
|
||||
if n != 1 || oobn != len(rights) {
|
||||
fmt.Printf("WriteMsgUnix = %d, %d; want 1, %d", n, oobn, len(rights))
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
// TestUnixRightsRoundtrip tests that UnixRights, ParseSocketControlMessage,
|
||||
// and ParseUnixRights are able to successfully round-trip lists of file descriptors.
|
||||
func TestUnixRightsRoundtrip(t *testing.T) {
|
||||
testCases := [...][][]int{
|
||||
{{42}},
|
||||
{{1, 2}},
|
||||
{{3, 4, 5}},
|
||||
{{}},
|
||||
{{1, 2}, {3, 4, 5}, {}, {7}},
|
||||
}
|
||||
for _, testCase := range testCases {
|
||||
b := []byte{}
|
||||
var n int
|
||||
for _, fds := range testCase {
|
||||
// Last assignment to n wins
|
||||
n = len(b) + unix.CmsgLen(4*len(fds))
|
||||
b = append(b, unix.UnixRights(fds...)...)
|
||||
}
|
||||
// Truncate b
|
||||
b = b[:n]
|
||||
|
||||
scms, err := unix.ParseSocketControlMessage(b)
|
||||
if err != nil {
|
||||
t.Fatalf("ParseSocketControlMessage: %v", err)
|
||||
}
|
||||
if len(scms) != len(testCase) {
|
||||
t.Fatalf("expected %v SocketControlMessage; got scms = %#v", len(testCase), scms)
|
||||
}
|
||||
for i, scm := range scms {
|
||||
gotFds, err := unix.ParseUnixRights(&scm)
|
||||
if err != nil {
|
||||
t.Fatalf("ParseUnixRights: %v", err)
|
||||
}
|
||||
wantFds := testCase[i]
|
||||
if len(gotFds) != len(wantFds) {
|
||||
t.Fatalf("expected %v fds, got %#v", len(wantFds), gotFds)
|
||||
}
|
||||
for j, fd := range gotFds {
|
||||
if fd != wantFds[j] {
|
||||
t.Fatalf("expected fd %v, got %v", wantFds[j], fd)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestRlimit(t *testing.T) {
|
||||
var rlimit, zero unix.Rlimit
|
||||
err := unix.Getrlimit(unix.RLIMIT_NOFILE, &rlimit)
|
||||
if err != nil {
|
||||
t.Fatalf("Getrlimit: save failed: %v", err)
|
||||
}
|
||||
if zero == rlimit {
|
||||
t.Fatalf("Getrlimit: save failed: got zero value %#v", rlimit)
|
||||
}
|
||||
set := rlimit
|
||||
set.Cur = set.Max - 1
|
||||
if runtime.GOOS == "darwin" && set.Cur > 10240 {
|
||||
// The max file limit is 10240, even though
|
||||
// the max returned by Getrlimit is 1<<63-1.
|
||||
// This is OPEN_MAX in sys/syslimits.h.
|
||||
set.Cur = 10240
|
||||
}
|
||||
err = unix.Setrlimit(unix.RLIMIT_NOFILE, &set)
|
||||
if err != nil {
|
||||
t.Fatalf("Setrlimit: set failed: %#v %v", set, err)
|
||||
}
|
||||
var get unix.Rlimit
|
||||
err = unix.Getrlimit(unix.RLIMIT_NOFILE, &get)
|
||||
if err != nil {
|
||||
t.Fatalf("Getrlimit: get failed: %v", err)
|
||||
}
|
||||
set = rlimit
|
||||
set.Cur = set.Max - 1
|
||||
if set != get {
|
||||
// Seems like Darwin requires some privilege to
|
||||
// increase the soft limit of rlimit sandbox, though
|
||||
// Setrlimit never reports an error.
|
||||
switch runtime.GOOS {
|
||||
case "darwin":
|
||||
default:
|
||||
t.Fatalf("Rlimit: change failed: wanted %#v got %#v", set, get)
|
||||
}
|
||||
}
|
||||
err = unix.Setrlimit(unix.RLIMIT_NOFILE, &rlimit)
|
||||
if err != nil {
|
||||
t.Fatalf("Setrlimit: restore failed: %#v %v", rlimit, err)
|
||||
}
|
||||
}
|
||||
|
||||
func TestSeekFailure(t *testing.T) {
|
||||
_, err := unix.Seek(-1, 0, 0)
|
||||
if err == nil {
|
||||
t.Fatalf("Seek(-1, 0, 0) did not fail")
|
||||
}
|
||||
str := err.Error() // used to crash on Linux
|
||||
t.Logf("Seek: %v", str)
|
||||
if str == "" {
|
||||
t.Fatalf("Seek(-1, 0, 0) return error with empty message")
|
||||
}
|
||||
}
|
||||
|
||||
func TestSetsockoptString(t *testing.T) {
|
||||
// should not panic on empty string, see issue #31277
|
||||
err := unix.SetsockoptString(-1, 0, 0, "")
|
||||
if err == nil {
|
||||
t.Fatalf("SetsockoptString: did not fail")
|
||||
}
|
||||
}
|
||||
|
||||
func TestDup(t *testing.T) {
|
||||
file, err := ioutil.TempFile("", "TestDup")
|
||||
if err != nil {
|
||||
t.Fatalf("Tempfile failed: %v", err)
|
||||
}
|
||||
defer os.Remove(file.Name())
|
||||
defer file.Close()
|
||||
f := int(file.Fd())
|
||||
|
||||
newFd, err := unix.Dup(f)
|
||||
if err != nil {
|
||||
t.Fatalf("Dup: %v", err)
|
||||
}
|
||||
|
||||
// Create and reserve a file descriptor.
|
||||
// Dup2 automatically closes it before reusing it.
|
||||
nullFile, err := os.Open("/dev/null")
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
dupFd := int(file.Fd())
|
||||
err = unix.Dup2(newFd, dupFd)
|
||||
if err != nil {
|
||||
t.Fatalf("Dup2: %v", err)
|
||||
}
|
||||
// Keep the dummy file open long enough to not be closed in
|
||||
// its finalizer.
|
||||
runtime.KeepAlive(nullFile)
|
||||
|
||||
b1 := []byte("Test123")
|
||||
b2 := make([]byte, 7)
|
||||
_, err = unix.Write(dupFd, b1)
|
||||
if err != nil {
|
||||
t.Fatalf("Write to dup2 fd failed: %v", err)
|
||||
}
|
||||
_, err = unix.Seek(f, 0, 0)
|
||||
if err != nil {
|
||||
t.Fatalf("Seek failed: %v", err)
|
||||
}
|
||||
_, err = unix.Read(f, b2)
|
||||
if err != nil {
|
||||
t.Fatalf("Read back failed: %v", err)
|
||||
}
|
||||
if string(b1) != string(b2) {
|
||||
t.Errorf("Dup: stdout write not in file, expected %v, got %v", string(b1), string(b2))
|
||||
}
|
||||
}
|
||||
|
||||
func TestGetwd(t *testing.T) {
|
||||
fd, err := os.Open(".")
|
||||
if err != nil {
|
||||
t.Fatalf("Open .: %s", err)
|
||||
}
|
||||
defer fd.Close()
|
||||
// Directory list for test. Do not worry if any are symlinks or do not
|
||||
// exist on some common unix desktop environments. That will be checked.
|
||||
dirs := []string{"/", "/usr/bin", "/etc", "/var", "/opt"}
|
||||
switch runtime.GOOS {
|
||||
case "android":
|
||||
dirs = []string{"/", "/system/bin"}
|
||||
case "darwin":
|
||||
switch runtime.GOARCH {
|
||||
case "arm", "arm64":
|
||||
d1, err := ioutil.TempDir("", "d1")
|
||||
if err != nil {
|
||||
t.Fatalf("TempDir: %v", err)
|
||||
}
|
||||
d2, err := ioutil.TempDir("", "d2")
|
||||
if err != nil {
|
||||
t.Fatalf("TempDir: %v", err)
|
||||
}
|
||||
dirs = []string{d1, d2}
|
||||
}
|
||||
}
|
||||
oldwd := os.Getenv("PWD")
|
||||
for _, d := range dirs {
|
||||
// Check whether d exists, is a dir and that d's path does not contain a symlink
|
||||
fi, err := os.Stat(d)
|
||||
if err != nil || !fi.IsDir() {
|
||||
t.Logf("Test dir %s stat error (%v) or not a directory, skipping", d, err)
|
||||
continue
|
||||
}
|
||||
check, err := filepath.EvalSymlinks(d)
|
||||
if err != nil || check != d {
|
||||
t.Logf("Test dir %s (%s) is symlink or other error (%v), skipping", d, check, err)
|
||||
continue
|
||||
}
|
||||
err = os.Chdir(d)
|
||||
if err != nil {
|
||||
t.Fatalf("Chdir: %v", err)
|
||||
}
|
||||
pwd, err := unix.Getwd()
|
||||
if err != nil {
|
||||
t.Fatalf("Getwd in %s: %s", d, err)
|
||||
}
|
||||
os.Setenv("PWD", oldwd)
|
||||
err = fd.Chdir()
|
||||
if err != nil {
|
||||
// We changed the current directory and cannot go back.
|
||||
// Don't let the tests continue; they'll scribble
|
||||
// all over some other directory.
|
||||
fmt.Fprintf(os.Stderr, "fchdir back to dot failed: %s\n", err)
|
||||
os.Exit(1)
|
||||
}
|
||||
if pwd != d {
|
||||
t.Fatalf("Getwd returned %q want %q", pwd, d)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestMkdev(t *testing.T) {
|
||||
major := uint32(42)
|
||||
minor := uint32(7)
|
||||
dev := unix.Mkdev(major, minor)
|
||||
|
||||
if unix.Major(dev) != major {
|
||||
t.Errorf("Major(%#x) == %d, want %d", dev, unix.Major(dev), major)
|
||||
}
|
||||
if unix.Minor(dev) != minor {
|
||||
t.Errorf("Minor(%#x) == %d, want %d", dev, unix.Minor(dev), minor)
|
||||
}
|
||||
}
|
||||
|
||||
// mktmpfifo creates a temporary FIFO and provides a cleanup function.
|
||||
func mktmpfifo(t *testing.T) (*os.File, func()) {
|
||||
err := unix.Mkfifo("fifo", 0666)
|
||||
if err != nil {
|
||||
t.Fatalf("mktmpfifo: failed to create FIFO: %v", err)
|
||||
}
|
||||
|
||||
f, err := os.OpenFile("fifo", os.O_RDWR, 0666)
|
||||
if err != nil {
|
||||
os.Remove("fifo")
|
||||
t.Fatalf("mktmpfifo: failed to open FIFO: %v", err)
|
||||
}
|
||||
|
||||
return f, func() {
|
||||
f.Close()
|
||||
os.Remove("fifo")
|
||||
}
|
||||
}
|
||||
|
||||
// utilities taken from os/os_test.go
|
||||
|
||||
func touch(t *testing.T, name string) {
|
||||
f, err := os.Create(name)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if err := f.Close(); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
// chtmpdir changes the working directory to a new temporary directory and
|
||||
// provides a cleanup function. Used when PWD is read-only.
|
||||
func chtmpdir(t *testing.T) func() {
|
||||
oldwd, err := os.Getwd()
|
||||
if err != nil {
|
||||
t.Fatalf("chtmpdir: %v", err)
|
||||
}
|
||||
d, err := ioutil.TempDir("", "test")
|
||||
if err != nil {
|
||||
t.Fatalf("chtmpdir: %v", err)
|
||||
}
|
||||
if err := os.Chdir(d); err != nil {
|
||||
t.Fatalf("chtmpdir: %v", err)
|
||||
}
|
||||
return func() {
|
||||
if err := os.Chdir(oldwd); err != nil {
|
||||
t.Fatalf("chtmpdir: %v", err)
|
||||
}
|
||||
os.RemoveAll(d)
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user