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sys/unix/syscall_zos_test.go
dustin-ward 7d69d983c4 unix: extend support for z/OS 
This change syncs the IBM internal version of sys/unix with the public
repository.

There are a variety of new syscalls and const definitions that have been
accumulated over the past few years to support developers using Go on
the platform. Old simulations of calls like 'epoll' and 'fstatfs' have
been replaced with their real counterparts. The zos/s390x syscalls also
have extensive trampolining to handle zos systems that might not have
support for some of these new system calls.

Closes golang/go#67071

Change-Id: I973d9e0abca2b05365308cf2b890438e50ae5957
Reviewed-on: https://go-review.googlesource.com/c/sys/+/582035
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Bill O'Farrell <billotosyr@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-05-03 20:28:26 +00:00

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// 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
package unix_test
import (
"errors"
"flag"
"fmt"
"io"
"log"
"net"
"os"
"os/exec"
"path/filepath"
"reflect"
"regexp"
"runtime"
"strconv"
"strings"
"syscall"
"testing"
"time"
"unsafe"
"golang.org/x/sys/unix"
)
func TestLibVec(t *testing.T) {
ret := unix.GetZosLibVec()
if ret == 0 {
t.Fatalf("initLibVec failed %v\n", ret)
}
}
func TestFprintf(t *testing.T) {
const expected = 61
ret, _, _ := unix.CallLeFuncWithErr(unix.GetZosLibVec()+unix.SYS___FPRINTF_A<<4,
unix.ZosStdioFilep(2), uintptr(unsafe.Pointer(
reflect.ValueOf([]byte("TEST DATA please ignore, fprintf stderr data %d %d %d %d\x0a\x00")).Pointer())),
111, 222, 333, 444)
if ret != expected {
t.Fatalf("expected bytes written %d , receive %d\n", expected, int(ret))
}
}
func TestErrnos(t *testing.T) {
ret, err1, err2 := unix.CallLeFuncWithErr(unix.GetZosLibVec()+unix.SYS___OPEN_A<<4,
uintptr(unsafe.Pointer(&(([]byte("/dev/nothing" + "\x00"))[0]))), 0, 0)
if ret != 0xffffffffffffffff || err2 != 0x79 || err1 != 0x562003f {
t.Fatalf("Expect ret ffffffffffffffff err2 79 err1 562003f, received ret %x err2 %x err1 %x\n", ret, err2, err1)
}
}
func TestErrnoString(t *testing.T) {
var (
ws unix.WaitStatus
rus unix.Rusage
)
_, err := unix.Wait4(-1, &ws, unix.WNOHANG, &rus)
if syscall.Errno(int32(err.(syscall.Errno))) != unix.ECHILD {
t.Fatalf("err != unix.ECHILD")
}
}
func BypassTestOnUntil(sys string, date string) bool {
t0, er0 := time.Parse(time.RFC3339, date)
if er0 != nil {
fmt.Printf("Bad date-time spec %s\n", date)
return false
}
if time.Now().After(t0) {
return false
}
host1, er1 := os.Hostname()
hostname := strings.Split(host1, ".")[0]
if er1 == nil && strings.EqualFold(hostname, sys) {
pc, file, line, ok := runtime.Caller(1)
if ok {
name := runtime.FuncForPC(pc).Name()
fmt.Fprintf(os.Stderr, "TODO: Test bypassed on %s %v:%v %v\n", hostname, file, line, name)
return true
}
}
return false
}
var euid = unix.Geteuid()
// 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 zosLeVersion() (version, release uint32) {
p1 := (*(*uintptr)(unsafe.Pointer(uintptr(1208)))) >> 32
p1 = *(*uintptr)(unsafe.Pointer(uintptr(p1 + 88)))
p1 = *(*uintptr)(unsafe.Pointer(uintptr(p1 + 8)))
p1 = *(*uintptr)(unsafe.Pointer(uintptr(p1 + 984)))
vrm := *(*uint32)(unsafe.Pointer(p1 + 80))
version = (vrm & 0x00ff0000) >> 16
release = (vrm & 0x0000ff00) >> 8
return
}
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 := os.Create(filepath.Join(t.TempDir(), "TestFnctlInt"))
if err != nil {
t.Fatal(err)
}
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$" and an environment variable used to signal
// that the test should become the child process instead.
func TestPassFD(t *testing.T) {
if os.Getenv("GO_WANT_HELPER_PROCESS") == "1" {
passFDChild()
return
}
tempDir := t.TempDir()
fds, err := unix.Socketpair(unix.AF_LOCAL, unix.SOCK_STREAM, 0)
if err != nil {
t.Fatalf("Socketpair: %v", err)
}
defer unix.Close(fds[0])
defer unix.Close(fds[1])
writeFile := os.NewFile(uintptr(fds[0]), "child-writes")
readFile := os.NewFile(uintptr(fds[1]), "parent-reads")
defer writeFile.Close()
defer readFile.Close()
cmd := exec.Command(os.Args[0], "-test.run=^TestPassFD$", "--", 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 := io.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 := os.CreateTemp(tempDir, "")
if err != nil {
fmt.Printf("TempFile: %v", err)
return
}
defer f.Close()
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 TestPrlimit(t *testing.T) {
var rlimit, get, set, zero unix.Rlimit
// Save initial settings
err := unix.Prlimit(0, unix.RLIMIT_NOFILE, nil, &rlimit)
if err != nil {
t.Fatalf("Prlimit: save failed: %v", err)
}
if zero == rlimit {
t.Fatalf("Prlimit: save failed: got zero value %#v", rlimit)
}
set = rlimit
set.Cur = set.Max - 1
// Set to one below max
err = unix.Prlimit(0, unix.RLIMIT_NOFILE, &set, nil)
if err != nil {
t.Fatalf("Prlimit: set failed: %#v %v", set, err)
}
// Get and restore to original
err = unix.Prlimit(0, unix.RLIMIT_NOFILE, &rlimit, &get)
if err != nil {
t.Fatalf("Prlimit: get and restore failed: %v", err)
}
if set != get {
t.Fatalf("Rlimit: change failed: wanted %#v got %#v", set, get)
}
}
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
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 {
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 := os.Create(filepath.Join(t.TempDir(), "TestDup"))
if err != nil {
t.Fatalf("Tempfile failed: %v", err)
}
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)
}
defer nullFile.Close()
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"}
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)
}
}
func TestZosFdToPath(t *testing.T) {
f, err := os.OpenFile("/tmp", os.O_RDONLY, 0755)
if err != nil {
t.Fatalf("Openfile %v", err)
}
defer f.Close()
fd := f.Fd()
var res string
res, err = unix.ZosFdToPath(int(fd))
if err != nil {
t.Fatalf("ZosFdToPath %v", err)
}
chk := regexp.MustCompile(`^.*/([^\/]+)`).FindStringSubmatch(res)
lastpath := chk[len(chk)-1]
if lastpath != "tmp" {
t.Fatalf("original %s last part of path \"%s\" received, expected \"tmp\" \n", res, lastpath)
}
}
// 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 := os.MkdirTemp("", "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)
}
}
func TestLegacyMountUnmount(t *testing.T) {
if euid != 0 {
t.Skip("euid != 0")
}
b2s := func(arr []byte) string {
var str string
for i := 0; i < len(arr); i++ {
if arr[i] == 0 {
str = string(arr[:i])
break
}
}
return str
}
// use an available fs
var buffer struct {
header unix.W_Mnth
fsinfo [64]unix.W_Mntent
}
fs_count, err := unix.W_Getmntent_A((*byte)(unsafe.Pointer(&buffer)), int(unsafe.Sizeof(buffer)))
if err != nil {
t.Fatalf("W_Getmntent_A returns with error: %s", err.Error())
} else if fs_count == 0 {
t.Fatalf("W_Getmntent_A returns no entries")
}
var fs string
var fstype string
var mountpoint string
var available bool = false
for i := 0; i < fs_count; i++ {
err = unix.Unmount(b2s(buffer.fsinfo[i].Mountpoint[:]), unix.MTM_RDWR)
if err != nil {
// Unmount and Mount require elevated privilege
// If test is run without such permission, skip test
if err == unix.EPERM {
t.Logf("Permission denied for Unmount. Skipping test (Errno2: %X)", unix.Errno2())
return
} else if err == unix.EBUSY {
continue
} else {
t.Fatalf("Unmount returns with error: %s", err.Error())
}
} else {
available = true
fs = b2s(buffer.fsinfo[i].Fsname[:])
fstype = b2s(buffer.fsinfo[i].Fstname[:])
mountpoint = b2s(buffer.fsinfo[i].Mountpoint[:])
t.Logf("using file system = %s; fstype = %s and mountpoint = %s\n", fs, fstype, mountpoint)
break
}
}
if !available {
t.Fatalf("No filesystem available")
}
// test unmount
buffer.header = unix.W_Mnth{}
fs_count, err = unix.W_Getmntent_A((*byte)(unsafe.Pointer(&buffer)), int(unsafe.Sizeof(buffer)))
if err != nil {
t.Fatalf("W_Getmntent_A returns with error: %s", err.Error())
}
for i := 0; i < fs_count; i++ {
if b2s(buffer.fsinfo[i].Fsname[:]) == fs {
t.Fatalf("File system found after unmount")
}
}
// test mount
err = unix.Mount(fs, mountpoint, fstype, unix.MTM_RDWR, "")
if err != nil {
t.Fatalf("Mount returns with error: %s", err.Error())
}
buffer.header = unix.W_Mnth{}
fs_count, err = unix.W_Getmntent_A((*byte)(unsafe.Pointer(&buffer)), int(unsafe.Sizeof(buffer)))
if err != nil {
t.Fatalf("W_Getmntent_A returns with error: %s", err.Error())
}
fs_mounted := false
for i := 0; i < fs_count; i++ {
if b2s(buffer.fsinfo[i].Fsname[:]) == fs && b2s(buffer.fsinfo[i].Mountpoint[:]) == mountpoint {
fs_mounted = true
}
}
if !fs_mounted {
t.Fatalf("%s not mounted after Mount()", fs)
}
}
func TestChroot(t *testing.T) {
if euid != 0 {
t.Skip("euid != 0")
}
// create temp dir and tempfile 1
tempDir := t.TempDir()
f, err := os.CreateTemp(tempDir, "chroot_test_file")
if err != nil {
t.Fatalf("TempFile: %s", err.Error())
}
defer f.Close()
// chroot temp dir
err = unix.Chroot(tempDir)
// Chroot requires elevated privilege
// If test is run without such permission, skip test
if err == unix.EPERM {
t.Logf("Denied permission for Chroot. Skipping test (Errno2: %X)", unix.Errno2())
return
} else if err != nil {
t.Fatalf("Chroot: %s", err.Error())
}
// check if tempDir contains test file
files, err := os.ReadDir("/")
if err != nil {
t.Fatalf("ReadDir: %s", err.Error())
}
found := false
for _, file := range files {
if file.Name() == filepath.Base(f.Name()) {
found = true
break
}
}
if !found {
t.Fatalf("Temp file not found in temp dir")
}
}
func TestFlock(t *testing.T) {
if v, r := zosLeVersion(); v <= 2 && r <= 4 {
t.Skipf("New flock can't be used in %d.%d < 2.5. Run TestLegacyFlock", v, r)
}
const (
SUCCESS = iota
BLOCKED
)
if os.Getenv("TEST_FLOCK_HELPER") == "1" {
defer os.Exit(0)
if len(os.Args) != 4 {
log.Fatal("bad argument")
}
mode, err := strconv.Atoi(os.Args[2])
if err != nil {
log.Fatalf("%s is invalid: %s", os.Args[2], err)
}
filename := os.Args[3]
f, err := os.OpenFile(filename, os.O_RDWR, 0755)
if err != nil {
log.Fatalf("%s", err.Error())
}
defer f.Close()
go func() {
// timeout
time.Sleep(5 * time.Second)
unix.Flock(int(f.Fd()), unix.LOCK_UN)
fmt.Print(BLOCKED)
os.Exit(1)
}()
err = unix.Flock(int(f.Fd()), mode)
if err == unix.EWOULDBLOCK {
fmt.Print(int(unix.EWOULDBLOCK))
os.Exit(1)
}
if err != nil {
log.Fatal(err)
}
defer unix.Flock(int(f.Fd()), unix.LOCK_UN)
fmt.Print(0)
return
}
f, err := os.Create(filepath.Join(t.TempDir(), "flock_test_file"))
if err != nil {
t.Fatalf("TempFile: %s\n", err)
}
defer f.Close()
fd := int(f.Fd())
testCases := []struct {
name string
fd int
p1modes []int
p2mode int
expected syscall.Errno
}{
{"Invalid fd", -1, []int{unix.LOCK_SH}, unix.LOCK_SH, unix.EBADF},
{"Invalid mode", fd, []int{unix.LOCK_EX | unix.LOCK_SH}, unix.LOCK_SH, unix.EINVAL},
{"EX-EX", fd, []int{unix.LOCK_SH, unix.LOCK_EX}, unix.LOCK_EX, BLOCKED},
{"EX-SH", fd, []int{unix.LOCK_SH, unix.LOCK_EX}, unix.LOCK_SH, BLOCKED},
{"SH-EX", fd, []int{unix.LOCK_EX, unix.LOCK_SH}, unix.LOCK_EX, BLOCKED},
{"SH-SH", fd, []int{unix.LOCK_EX, unix.LOCK_SH}, unix.LOCK_SH, SUCCESS},
{"EX-EXNB", fd, []int{unix.LOCK_SH, unix.LOCK_EX}, unix.LOCK_EX | unix.LOCK_NB, unix.EWOULDBLOCK},
{"EX-SHNB", fd, []int{unix.LOCK_SH, unix.LOCK_EX}, unix.LOCK_SH | unix.LOCK_NB, unix.EWOULDBLOCK},
{"SH-SHNB", fd, []int{unix.LOCK_EX, unix.LOCK_SH}, unix.LOCK_EX | unix.LOCK_NB, unix.EWOULDBLOCK},
{"SH-SHNB", fd, []int{unix.LOCK_EX, unix.LOCK_SH}, unix.LOCK_SH | unix.LOCK_NB, SUCCESS},
}
// testcase:
for _, c := range testCases {
t.Run(c.name, func(t *testing.T) {
for _, mode := range c.p1modes {
err = unix.Flock(c.fd, mode)
if err == c.expected {
return
}
if err != nil {
t.Fatalf("failed to acquire Flock with mode(%d): %s\n", mode, err)
}
}
p2status := BLOCKED
done := make(chan bool)
execP2 := func(isBlock bool) {
cmd := exec.Command(os.Args[0], "-test.run=^TestFlock$", strconv.Itoa(c.p2mode), f.Name())
cmd.Env = append(os.Environ(), "TEST_FLOCK_HELPER=1")
out, _ := cmd.CombinedOutput()
if p2status, err = strconv.Atoi(string(out)); err != nil {
log.Fatalf("p2status is not valid: %s\n", err)
}
if isBlock {
done <- true
}
}
if c.expected == BLOCKED {
go execP2(true)
<-done
} else {
execP2(false)
}
if p2status != int(c.expected) {
unix.Flock(c.fd, unix.LOCK_UN)
t.Fatalf("expected %d, actual %d\n", c.expected, p2status)
}
unix.Flock(c.fd, unix.LOCK_UN)
})
}
}
func TestLegacyFlock(t *testing.T) {
if v, r := zosLeVersion(); v > 2 || (v == 2 && r > 4) {
t.Skipf("Legacy flock can't be used in %d.%d > 2.4. Run TestFlock", v, r)
}
if os.Getenv("GO_WANT_HELPER_PROCESS") == "1" {
defer os.Exit(0)
if len(os.Args) != 3 {
fmt.Printf("bad argument")
return
}
fn := os.Args[2]
f, err := os.OpenFile(fn, os.O_RDWR, 0755)
if err != nil {
fmt.Printf("%s", err.Error())
return
}
err = unix.Flock(int(f.Fd()), unix.LOCK_EX|unix.LOCK_NB)
// if the lock we are trying should be locked, ignore EAGAIN error
// otherwise, report all errors
if err != nil && err != unix.EAGAIN {
fmt.Printf("%s", err.Error())
}
} else {
// create tempfile 1
f, err := os.Create(filepath.Join(t.TempDir(), "flock_test_file"))
if err != nil {
t.Fatalf("TempFile: %s", err.Error())
}
defer f.Close()
fd := int(f.Fd())
/* Test Case 1
* Try acquiring an occupied lock from another process
*/
err = unix.Flock(fd, unix.LOCK_EX)
if err != nil {
t.Fatalf("Flock: %s", err.Error())
}
cmd := exec.Command(os.Args[0], "-test.run=TestLegacyFlock", f.Name())
cmd.Env = append(os.Environ(), "GO_WANT_HELPER_PROCESS=1")
out, err := cmd.CombinedOutput()
if len(out) > 0 || err != nil {
t.Fatalf("child process: %q, %v", out, err)
}
err = unix.Flock(fd, unix.LOCK_UN)
if err != nil {
t.Fatalf("Flock: %s", err.Error())
}
/* Test Case 2
* Try locking with Flock and FcntlFlock for same file
*/
err = unix.Flock(fd, unix.LOCK_EX)
if err != nil {
t.Fatalf("Flock: %s", err.Error())
}
flock := unix.Flock_t{
Type: int16(unix.F_WRLCK),
Whence: int16(0),
Start: int64(0),
Len: int64(0),
Pid: int32(unix.Getppid()),
}
err = unix.FcntlFlock(f.Fd(), unix.F_SETLK, &flock)
if err != nil {
t.Fatalf("FcntlFlock: %s", err.Error())
}
}
}
func TestSelect(t *testing.T) {
for {
n, err := unix.Select(0, nil, nil, nil, &unix.Timeval{Sec: 0, Usec: 0})
if err == unix.EINTR {
t.Logf("Select interrupted")
continue
} else if err != nil {
t.Fatalf("Select: %v", err)
}
if n != 0 {
t.Fatalf("Select: got %v ready file descriptors, expected 0", n)
}
break
}
dur := 250 * time.Millisecond
var took time.Duration
for {
// On some platforms (e.g. Linux), the passed-in timeval is
// updated by select(2). Make sure to reset to the full duration
// in case of an EINTR.
tv := unix.NsecToTimeval(int64(dur))
start := time.Now()
n, err := unix.Select(0, nil, nil, nil, &tv)
took = time.Since(start)
if err == unix.EINTR {
t.Logf("Select interrupted after %v", took)
continue
} else if err != nil {
t.Fatalf("Select: %v", err)
}
if n != 0 {
t.Fatalf("Select: got %v ready file descriptors, expected 0", n)
}
break
}
// On some BSDs the actual timeout might also be slightly less than the requested.
// Add an acceptable margin to avoid flaky tests.
if took < dur*2/3 {
t.Errorf("Select: got %v timeout, expected at least %v", took, dur)
}
rr, ww, err := os.Pipe()
if err != nil {
t.Fatal(err)
}
defer rr.Close()
defer ww.Close()
if _, err := ww.Write([]byte("HELLO GOPHER")); err != nil {
t.Fatal(err)
}
rFdSet := &unix.FdSet{}
fd := int(rr.Fd())
rFdSet.Set(fd)
for {
n, err := unix.Select(fd+1, rFdSet, nil, nil, nil)
if err == unix.EINTR {
t.Log("Select interrupted")
continue
} else if err != nil {
t.Fatalf("Select: %v", err)
}
if n != 1 {
t.Fatalf("Select: got %v ready file descriptors, expected 1", n)
}
break
}
}
func TestUnixCredentials(t *testing.T) {
var ucred syscall.Ucred
if os.Getuid() != 0 {
ucred.Pid = int32(os.Getpid())
ucred.Uid = 0
ucred.Gid = 0
}
ucred.Pid = int32(os.Getpid())
ucred.Uid = uint32(os.Getuid())
ucred.Gid = uint32(os.Getgid())
oob := syscall.UnixCredentials(&ucred)
// On SOCK_STREAM, this is internally going to send a dummy byte
scm, err := syscall.ParseSocketControlMessage(oob)
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)
}
}
func TestFutimes(t *testing.T) {
// Create temp dir and file
f, err := os.Create(filepath.Join(t.TempDir(), "futimes_test_file"))
if err != nil {
t.Fatalf("TempFile: %s", err.Error())
}
defer f.Close()
fd := int(f.Fd())
// Set mod time to newTime
newTime := time.Date(2001, time.Month(2), 15, 7, 7, 7, 0, time.UTC)
err = unix.Futimes(
fd,
[]unix.Timeval{
unix.Timeval{newTime.Unix(), 0},
unix.Timeval{newTime.Unix(), 0},
})
if err != nil {
t.Fatalf("TestFutimes: %v", err)
}
// Compare mod time
stats, err := f.Stat()
if err != nil {
t.Fatalf("Stat: %v", err)
}
modTime := stats.ModTime()
if modTime.UTC() != newTime {
t.Fatalf("TestFutimes: modTime = %v, want %v", modTime.UTC(), newTime)
}
}
func TestLutimes(t *testing.T) {
// Create temp dir and file
tempDir := t.TempDir()
f, err := os.CreateTemp(tempDir, "lutimes_test_file")
if err != nil {
t.Fatalf("TempFile: %s", err.Error())
}
defer f.Close()
symlinkPath := tempDir + "/test_symlink"
err = os.Symlink(f.Name(), symlinkPath)
if err != nil {
t.Fatalf("Symlink: %v", err)
}
// Set mod time to newTime
newTime := time.Date(2001, time.Month(2), 15, 7, 7, 7, 0, time.UTC)
err = unix.Lutimes(
symlinkPath,
[]unix.Timeval{
unix.Timeval{newTime.Unix(), 0},
unix.Timeval{newTime.Unix(), 0},
})
if err != nil {
t.Fatalf("TestLutimes: %v", err)
}
// Compare mod time
stats, err := os.Lstat(symlinkPath)
if err != nil {
t.Fatalf("Lstat: %v", err)
}
modTime := stats.ModTime()
if modTime.UTC() != newTime {
t.Fatalf("TestLutimes: modTime = %v, want %v", modTime.UTC(), newTime)
}
}
func TestDirfd(t *testing.T) {
// Create temporary directory
tempDir := t.TempDir()
f, err := os.CreateTemp(tempDir, "dirfd_test_file")
if err != nil {
t.Fatalf("TempFile: %v", err)
}
defer f.Close()
// Open temp dir and get stream
dirStream, err := unix.Opendir(tempDir)
if err != nil {
t.Fatalf("Opendir: %v", err)
}
defer unix.Closedir(dirStream)
// Get fd from stream
dirFd, err := unix.Dirfd(dirStream)
if err != nil {
t.Fatalf("Dirfd: %v", err)
}
if dirFd < 0 {
t.Fatalf("Dirfd: fd < 0, (fd = %v)", dirFd)
}
oldwd, err := os.Getwd()
if err != nil {
t.Fatalf("Getwd: %v", err)
}
defer os.Chdir(oldwd)
// Change dir to fd and get path
err = unix.Fchdir(dirFd)
if err != nil {
t.Fatalf("Fchdir: %v", err)
}
path, err := os.Getwd()
if err != nil {
t.Fatalf("Getwd: %v", err)
}
pathInfo, err := os.Lstat(path)
if err != nil {
t.Fatalf("os.Stat: %v", err)
}
tempDirInfo2, err := os.Lstat(tempDir)
if err != nil {
t.Fatalf("os.Stat: %v", err)
}
// Perform Test
if !os.SameFile(pathInfo, tempDirInfo2) {
t.Fatalf("Dirfd: expected working directory to be %v, actually: %v", tempDir, path)
}
}
func TestEpollCreate(t *testing.T) {
if BypassTestOnUntil("zoscan59", "2024-04-01T12:45:21.123Z") {
t.Skip("skipping on zoscan59 until 2024-04-01")
}
efd, err := unix.EpollCreate(1)
if err != nil {
t.Fatalf("EpollCreate: %v", err)
}
defer unix.Close(efd)
}
func TestEpollCreate1(t *testing.T) {
if BypassTestOnUntil("zoscan59", "2024-04-01T12:45:21.123Z") {
t.Skip("skipping on zoscan59 until 2024-04-01")
}
efd, err := unix.EpollCreate1(0)
if err != nil {
t.Fatalf("EpollCreate1: %v", err)
}
unix.Close(efd)
}
func TestEpoll(t *testing.T) {
if BypassTestOnUntil("zoscan59", "2024-04-01T12:45:21.123Z") {
t.Skip("skipping on zoscan59 until 2024-04-01")
}
efd, err := unix.EpollCreate1(0) // no CLOEXEC equivalent on z/OS
if err != nil {
t.Fatalf("EpollCreate1: %v", err)
}
// no need to defer a close on efd, as it's not a real file descriptor on zos
r, w, err := os.Pipe()
if err != nil {
t.Fatal(err)
}
defer r.Close()
defer w.Close()
fd := int(r.Fd())
ev := unix.EpollEvent{Events: unix.EPOLLIN, Fd: int32(fd)}
err = unix.EpollCtl(efd, unix.EPOLL_CTL_ADD, fd, &ev)
if err != nil {
t.Fatalf("EpollCtl: %v", err)
}
if _, err := w.Write([]byte("HELLO GOPHER")); err != nil {
t.Fatal(err)
}
events := make([]unix.EpollEvent, 128)
n, err := unix.EpollWait(efd, events, 1)
if err != nil {
t.Fatalf("EpollWait: %v", err)
}
if n != 1 {
t.Errorf("EpollWait: wrong number of events: got %v, expected 1", n)
}
got := int(events[0].Fd)
if got != fd {
t.Errorf("EpollWait: wrong Fd in event: got %v, expected %v", got, fd)
}
if events[0].Events&unix.EPOLLIN == 0 {
t.Errorf("Expected EPOLLIN flag to be set, got %b", events[0].Events)
}
x := 0
n, err = unix.EpollPwait(efd, events, 1, &x)
if err != nil {
t.Fatalf("EpollPwait: %v", err)
}
}
func TestEventfd(t *testing.T) {
fd, err := unix.Eventfd(0, 0)
if err != nil {
t.Fatalf("Eventfd: %v", err)
}
if fd <= 2 {
t.Fatalf("Eventfd: fd <= 2, got: %d", fd)
}
}
func TestEventfdSemaphore(t *testing.T) {
efd, err := unix.Eventfd(1, unix.EFD_SEMAPHORE|unix.EFD_NONBLOCK|unix.EFD_CLOEXEC)
if err != nil {
t.Fatalf("Eventfd: %v", err)
}
writeBytes := make([]byte, 8)
writeBytes[7] = 0x4
n, err := unix.Write(efd, writeBytes)
if err != nil {
t.Fatalf("Write: %v", err)
}
if n != 8 {
t.Fatalf("Write: only wrote %d bytes, wanted 8", n)
}
for i := 0; i < 5; i++ {
readBytes := make([]byte, 8)
n, err := unix.Read(efd, readBytes)
if err != nil {
t.Fatalf("Read: %v", err)
}
if n != 8 {
t.Fatalf("Read: only read %d bytes, wanted 8", n)
}
}
readBytes := make([]byte, 8)
n, err = unix.Read(efd, readBytes)
if err == nil || err.Error() != "EDC5112I Resource temporarily unavailable." {
t.Fatalf("Read: expected error \"EDC5112I Resource temporarily unavailable.\", got %v", err)
}
if n != -1 {
t.Fatalf("Read: expected error code -1, got %d", n)
}
if readBytes[7] != 0 {
t.Fatalf("Read: expected return of 0, got %d", readBytes[7])
}
}
func TestStatfs(t *testing.T) {
// Create temporary directory
tempDir := t.TempDir()
var stat unix.Statfs_t
if err := unix.Statfs(tempDir, &stat); err != nil {
t.Fatalf("Stafs: %v", err)
}
if stat.Files == 0 {
t.Fatalf("Statfs: expected files > 0")
}
}
func TestStatfsProc(t *testing.T) {
// Create temporary directory
if _, err := os.Stat("/proc/self"); errors.Is(err, os.ErrNotExist) {
t.Skip("/proc/self is not exist skipping the test")
}
var stat unix.Statfs_t
if err := unix.Statfs("/proc/self/ns", &stat); err != nil {
t.Fatalf("Stafs: %v", err)
}
if stat.Type != unix.PROC_SUPER_MAGIC {
t.Fatalf("Statfs: expected files > 0")
}
}
func TestFstatfs(t *testing.T) {
// Create temporary directory
file, err := os.Create(filepath.Join(t.TempDir(), "fstatfs_test_file"))
if err != nil {
t.Fatalf("TempFile: %v", err)
}
defer file.Close()
fd := int(file.Fd())
var stat unix.Statfs_t
if err = unix.Fstatfs(fd, &stat); err != nil {
t.Fatalf("Stafs: %v", err)
}
if stat.Files == 0 {
t.Fatalf("Statfs: expected files > 0")
}
}
func TestFdatasync(t *testing.T) {
t.Skip("FAIL: Known failure, would hang if not skipped")
// Create temporary directory
file, err := os.Create(filepath.Join(t.TempDir(), "fdatasync_test_file"))
if err != nil {
t.Fatalf("TempFile: %v", err)
}
file.Close()
fd := int(file.Fd())
var stat1 unix.Stat_t
if err = unix.Fstat(fd, &stat1); err != nil {
t.Fatalf("Fstat: %v", err)
}
time.Sleep(1 * time.Second)
if _, err := unix.Write(fd, []byte("Test string")); err != nil {
t.Fatalf("Write: %v", err)
}
var stat2 unix.Stat_t
if err = unix.Fstat(fd, &stat2); err != nil {
t.Fatalf("Fstat: %v", err)
}
time.Sleep(1 * time.Second)
if err = unix.Fdatasync(fd); err != nil {
t.Fatalf("Fdatasync: %v", err)
}
var stat3 unix.Stat_t
if err = unix.Fstat(fd, &stat3); err != nil {
t.Fatalf("Fstat: %v", err)
}
if stat2.Mtim != stat3.Mtim {
t.Fatalf("Fdatasync: Modify times do not match. Wanted %v, got %v", stat2.Mtim, stat3.Mtim)
}
}
func TestReadDirent(t *testing.T) {
// Create temporary directory and files
tempDir := t.TempDir()
f1, err := os.CreateTemp(tempDir, "ReadDirent_test_file")
if err != nil {
t.Fatalf("TempFile: %v", err)
}
defer f1.Close()
f2, err := os.CreateTemp(tempDir, "ReadDirent_test_file")
if err != nil {
t.Fatalf("TempFile: %v", err)
}
defer f2.Close()
tempSubDir, err := os.MkdirTemp(tempDir, "ReadDirent_SubDir")
if err != nil {
t.Fatalf("TempDir: %v", err)
}
f3, err := os.CreateTemp(tempSubDir, "ReadDirent_subDir_test_file")
if err != nil {
t.Fatalf("TempFile: %v", err)
}
defer f3.Close()
// Get fd of tempDir
dir, err := os.Open(tempDir)
if err != nil {
t.Fatalf("Open: %v", err)
}
defer dir.Close()
fd := int(dir.Fd())
// Run Getdirentries
buf := make([]byte, 2048)
n, err := unix.ReadDirent(fd, buf)
if err != nil {
t.Fatalf("ReadDirent: %v", err)
}
if n == 0 {
t.Fatalf("ReadDirent: 0 bytes read")
}
names := make([]string, 0)
consumed, count, _ := unix.ParseDirent(buf, 100, names)
if consumed == 0 {
t.Fatalf("ParseDirent: consumed 0 bytes")
}
if count != 3 {
t.Fatalf("ParseDirent: only recorded %d entries, expected 3", count)
}
}
func TestPipe2(t *testing.T) {
var p [2]int
err := unix.Pipe2(p[:], unix.O_CLOEXEC)
if err != nil {
t.Fatalf("Pipe2: %v", err)
}
r, w := int(p[0]), int(p[1])
n1, err := unix.Write(w, []byte("Testing pipe2!"))
if err != nil {
t.Fatalf("Write: %v", err)
}
buf := make([]byte, 256)
n2, err := unix.Read(r, buf[:])
if err != nil {
t.Fatalf("Read: %v", err)
}
if n1 != n2 {
t.Fatalf("Pipe2: bytes read != bytes written. Wrote %d, read %d", n1, n2)
}
}
func TestInotify(t *testing.T) {
// Driver func to try and capture all possible events
t.Run("IN_ACCESS", inotify_access)
t.Run("IN_ATTRIB", inotify_attrib)
t.Run("IN_CLOSE_WRITE", inotify_close_write)
t.Run("IN_CLOSE_NOWRITE", inotify_close_nowrite)
t.Run("IN_CREATE", inotify_create)
t.Run("IN_DELETE", inotify_delete)
t.Run("IN_DELETE_SELF", inotify_delete_self)
t.Run("IN_MODIFY", inotify_modify)
t.Run("IN_MOVE_SELF", inotify_move_self)
t.Run("IN_MOVED_FROM", inotify_moved_from)
t.Run("IN_MOVED_TO", inotify_moved_to)
t.Run("IN_OPEN", inotify_open)
}
func inotify_access(t *testing.T) {
// Create temporary files
tempDir := t.TempDir()
tempFile, err := os.Create(filepath.Join(tempDir, "inotify_access_test_file"))
if err != nil {
t.Fatalf("TempFile: %v", err)
}
defer tempFile.Close()
// Setup iNotify
infd, err := unix.InotifyInit1(unix.IN_CLOEXEC | unix.IN_NONBLOCK)
if err != nil {
t.Fatalf("InotifyInit1: %v", err)
}
wd, err := unix.InotifyAddWatch(infd, tempFile.Name(), unix.IN_ACCESS)
if err != nil {
t.Fatalf("InotifyAddWatch: %v", err)
}
// Trigger Event
n, err := tempFile.Write([]byte("Writing before reading"))
if err != nil {
t.Fatalf("Write: %v", err)
}
if n <= 0 {
t.Fatalf("Did not write any data")
}
tempFile.Seek(0, 0)
buf := make([]byte, 64)
n, err = tempFile.Read(buf)
if err != nil {
t.Fatalf("Read: %v", err)
}
if n <= 0 {
t.Fatalf("Did not read any data")
}
// Expect event
buf = make([]byte, unix.SizeofInotifyEvent)
n, err = unix.Read(infd, buf[:])
if n == -1 {
t.Fatalf("No event was read from the iNotify fd")
}
// Remove Watch
if _, err = unix.InotifyRmWatch(infd, uint32(wd)); err != nil {
t.Fatalf("InotifyRmWatch: %v", err)
}
}
func inotify_attrib(t *testing.T) {
// Create temporary files
tempDir := t.TempDir()
tempFile, err := os.Create(filepath.Join(tempDir, "inotify_attrib_test_file"))
if err != nil {
t.Fatalf("TempFile: %v", err)
}
defer tempFile.Close()
// Setup iNotify
infd, err := unix.InotifyInit1(unix.IN_CLOEXEC | unix.IN_NONBLOCK)
if err != nil {
t.Fatalf("InotifyInit1: %v", err)
}
defer unix.Close(infd)
wd, err := unix.InotifyAddWatch(infd, tempFile.Name(), unix.IN_ATTRIB)
if err != nil {
t.Fatalf("InotifyAddWatch: %v", err)
}
// Trigger Event
if err = tempFile.Chmod(0777); err != nil {
t.Fatalf("Chmod: %v", err)
}
// Expect event
buf := make([]byte, unix.SizeofInotifyEvent)
n, err := unix.Read(infd, buf[:])
if n == -1 {
t.Fatalf("No event was read from the iNotify fd")
}
// Remove Watch
if _, err = unix.InotifyRmWatch(infd, uint32(wd)); err != nil {
t.Fatalf("InotifyRmWatch: %v", err)
}
}
func inotify_close_write(t *testing.T) {
// Create temporary files
tempDir := t.TempDir()
tempFile, err := os.Create(filepath.Join(tempDir, "inotify_close_write_test_file"))
if err != nil {
t.Fatalf("TempFile: %v", err)
}
// File closed in test later
// Setup iNotify
infd, err := unix.InotifyInit1(unix.IN_CLOEXEC | unix.IN_NONBLOCK)
if err != nil {
t.Fatalf("InotifyInit1: %v", err)
}
wd, err := unix.InotifyAddWatch(infd, tempFile.Name(), unix.IN_CLOSE_WRITE)
if err != nil {
t.Fatalf("InotifyAddWatch: %v", err)
}
// Trigger Event
_, err = tempFile.Write([]byte("Writing before closing"))
if err != nil {
t.Fatalf("Write: %v", err)
}
tempFile.Close()
// Expect event
buf := make([]byte, unix.SizeofInotifyEvent)
n, err := unix.Read(infd, buf[:])
if n == -1 {
t.Fatalf("No event was read from the iNotify fd")
}
// Remove Watch
if _, err = unix.InotifyRmWatch(infd, uint32(wd)); err != nil {
t.Fatalf("InotifyRmWatch: %v", err)
}
}
func inotify_close_nowrite(t *testing.T) {
// Create temporary files
tempDir := t.TempDir()
tempFile, err := os.CreateTemp(tempDir, "inotify_close_nowrite_test_file")
if err != nil {
t.Fatalf("TempFile: %v", err)
}
// File closed later in test
// Setup iNotify
infd, err := unix.InotifyInit1(unix.IN_CLOEXEC | unix.IN_NONBLOCK)
if err != nil {
t.Fatalf("InotifyInit1: %v", err)
}
wd, err := unix.InotifyAddWatch(infd, tempDir, unix.IN_CLOSE_NOWRITE)
if err != nil {
t.Fatalf("InotifyAddWatch: %v", err)
}
// Trigger Event
d, err := os.Open(tempDir)
if err != nil {
t.Fatalf("Opendir: %v", err)
}
tempFile.Close()
d.Close()
// Expect event
buf := make([]byte, unix.SizeofInotifyEvent*4)
n, err := unix.Read(infd, buf[:])
if err != nil {
t.Fatalf("Read: %v", err)
}
if n == 0 {
t.Fatalf("No event was read from the iNotify fd")
}
// Remove Watch
if _, err = unix.InotifyRmWatch(infd, uint32(wd)); err != nil {
t.Fatalf("InotifyRmWatch: %v", err)
}
}
func inotify_create(t *testing.T) {
// Create temporary files
tempDir := t.TempDir()
// Setup iNotify
infd, err := unix.InotifyInit1(unix.IN_CLOEXEC | unix.IN_NONBLOCK)
if err != nil {
t.Fatalf("InotifyInit1: %v", err)
}
wd, err := unix.InotifyAddWatch(infd, tempDir, unix.IN_CREATE)
if err != nil {
t.Fatalf("InotifyAddWatch: %v", err)
}
// Trigger Event
f, err := os.CreateTemp(tempDir, "inotify_create_test_file")
if err != nil {
t.Fatalf("TempFile: %v", err)
}
f.Close()
// Expect event
buf := make([]byte, unix.SizeofInotifyEvent*4)
n, err := unix.Read(infd, buf[:])
if err != nil {
t.Fatalf("Read: %v", err)
}
if n == 0 {
t.Fatalf("No event was read from the iNotify fd")
}
// Remove Watch
if _, err = unix.InotifyRmWatch(infd, uint32(wd)); err != nil {
t.Fatalf("InotifyRmWatch: %v", err)
}
}
func inotify_delete(t *testing.T) {
// Create temporary files
tempDir := t.TempDir()
tempFile, err := os.CreateTemp(tempDir, "inotify_delete_test_file")
if err != nil {
t.Fatalf("TempFile: %v", err)
}
// File closed later in test
// Setup iNotify
infd, err := unix.InotifyInit1(unix.IN_CLOEXEC | unix.IN_NONBLOCK)
if err != nil {
t.Fatalf("InotifyInit1: %v", err)
}
wd, err := unix.InotifyAddWatch(infd, tempDir, unix.IN_DELETE)
if err != nil {
t.Fatalf("InotifyAddWatch: %v", err)
}
// Trigger Event
name := tempFile.Name()
tempFile.Close()
if err = os.Remove(name); err != nil {
t.Fatalf("Remove: %v", err)
}
// Expect event
buf := make([]byte, unix.SizeofInotifyEvent*4)
n, err := unix.Read(infd, buf[:])
if err != nil {
t.Fatalf("Read: %v", err)
}
if n == 0 {
t.Fatalf("No event was read from the iNotify fd")
}
// Remove Watch
if _, err = unix.InotifyRmWatch(infd, uint32(wd)); err != nil {
t.Fatalf("InotifyRmWatch: %v", err)
}
}
func inotify_delete_self(t *testing.T) {
// Create temporary files
tempDir := t.TempDir()
tempFile, err := os.CreateTemp(tempDir, "inotify_delete_self_test_file")
if err != nil {
t.Fatalf("TempFile: %v", err)
}
// File closed later in test
// Setup iNotify
infd, err := unix.InotifyInit1(unix.IN_CLOEXEC | unix.IN_NONBLOCK)
if err != nil {
t.Fatalf("InotifyInit1: %v", err)
}
_, err = unix.InotifyAddWatch(infd, tempDir, unix.IN_DELETE_SELF)
if err != nil {
t.Fatalf("InotifyAddWatch: %v", err)
}
// Trigger Event
tempFile.Close()
if err = os.RemoveAll(tempDir); err != nil {
t.Fatalf("RemoveAll: %v", err)
}
// Expect event
buf := make([]byte, unix.SizeofInotifyEvent)
n, err := unix.Read(infd, buf[:])
if err != nil {
t.Fatalf("Read: %v", err)
}
if n == 0 {
t.Fatalf("No event was read from the iNotify fd")
}
}
func inotify_modify(t *testing.T) {
// Create temporary files
tempDir := t.TempDir()
tempFile, err := os.CreateTemp(tempDir, "inotify_modify_test_file")
if err != nil {
t.Fatalf("TempFile: %v", err)
}
defer tempFile.Close()
// Setup iNotify
infd, err := unix.InotifyInit1(unix.IN_CLOEXEC | unix.IN_NONBLOCK)
if err != nil {
t.Fatalf("InotifyInit1: %v", err)
}
wd, err := unix.InotifyAddWatch(infd, tempFile.Name(), unix.IN_MODIFY)
if err != nil {
t.Fatalf("InotifyAddWatch: %v", err)
}
// Trigger Event
_, err = tempFile.Write([]byte("Writing before closing"))
if err != nil {
t.Fatalf("Write: %v", err)
}
// Expect event
buf := make([]byte, unix.SizeofInotifyEvent)
n, err := unix.Read(infd, buf[:])
if err != nil {
t.Fatalf("Read: %v", err)
}
if n == 0 {
t.Fatalf("No event was read from the iNotify fd")
}
// Remove Watch
if _, err = unix.InotifyRmWatch(infd, uint32(wd)); err != nil {
t.Fatalf("InotifyRmWatch: %v", err)
}
}
func inotify_move_self(t *testing.T) {
// Create temporary files
tempDir := t.TempDir()
tempFile, err := os.CreateTemp(tempDir, "inotify_move_self_test_file")
if err != nil {
t.Fatalf("TempFile: %v", err)
}
defer tempFile.Close()
// Setup iNotify
infd, err := unix.InotifyInit1(unix.IN_CLOEXEC | unix.IN_NONBLOCK)
if err != nil {
t.Fatalf("InotifyInit1: %v", err)
}
wd, err := unix.InotifyAddWatch(infd, tempFile.Name(), unix.IN_MOVE_SELF)
if err != nil {
t.Fatalf("InotifyAddWatch: %v", err)
}
// Trigger Event
err = os.Rename(tempFile.Name(), tempFile.Name()+"2")
if err != nil {
t.Fatalf("Rename: %v", err)
}
// Expect event
buf := make([]byte, unix.SizeofInotifyEvent)
n, err := unix.Read(infd, buf[:])
if err != nil {
t.Fatalf("Read: %v", err)
}
if n == 0 {
t.Fatalf("No event was read from the iNotify fd")
}
// Remove Watch
if _, err = unix.InotifyRmWatch(infd, uint32(wd)); err != nil {
t.Fatalf("InotifyRmWatch: %v", err)
}
}
func inotify_moved_from(t *testing.T) {
// Create temporary files
tempDir1 := t.TempDir()
tempDir2 := t.TempDir()
tempFile, err := os.CreateTemp(tempDir1, "inotify_moved_from_test_file")
if err != nil {
t.Fatalf("TempFile: %v", err)
}
defer tempFile.Close()
// Setup iNotify
infd, err := unix.InotifyInit1(unix.IN_CLOEXEC | unix.IN_NONBLOCK)
if err != nil {
t.Fatalf("InotifyInit1: %v", err)
}
wd, err := unix.InotifyAddWatch(infd, tempDir1, unix.IN_MOVED_FROM)
if err != nil {
t.Fatalf("InotifyAddWatch: %v", err)
}
// Trigger Event
filename := strings.TrimPrefix(tempFile.Name(), tempDir1)
err = os.Rename(tempDir1+filename,
tempDir2+filename)
if err != nil {
t.Fatalf("Rename: %v", err)
}
// Expect event
buf := make([]byte, unix.SizeofInotifyEvent*4)
n, err := unix.Read(infd, buf[:])
if err != nil {
t.Fatalf("Read: %v", err)
}
if n == 0 {
t.Fatalf("No event was read from the iNotify fd")
}
// Remove Watch
if _, err = unix.InotifyRmWatch(infd, uint32(wd)); err != nil {
t.Fatalf("InotifyRmWatch: %v", err)
}
}
func inotify_moved_to(t *testing.T) {
// Create temporary files
tempDir1 := t.TempDir()
tempDir2 := t.TempDir()
tempFile, err := os.CreateTemp(tempDir1, "inotify_moved_to_test_file")
if err != nil {
t.Fatalf("TempFile: %v", err)
}
defer tempFile.Close()
// Setup iNotify
infd, err := unix.InotifyInit1(unix.IN_CLOEXEC | unix.IN_NONBLOCK)
if err != nil {
t.Fatalf("InotifyInit1: %v", err)
}
wd, err := unix.InotifyAddWatch(infd, tempDir2, unix.IN_MOVED_TO)
if err != nil {
t.Fatalf("InotifyAddWatch: %v", err)
}
// Trigger Event
filename := strings.TrimPrefix(tempFile.Name(), tempDir1)
err = os.Rename(tempDir1+filename,
tempDir2+filename)
if err != nil {
t.Fatalf("Rename: %v", err)
}
// Expect event
buf := make([]byte, unix.SizeofInotifyEvent*4)
n, err := unix.Read(infd, buf[:])
if err != nil {
t.Fatalf("Read: %v", err)
}
if n == 0 {
t.Fatalf("No event was read from the iNotify fd")
}
// Remove Watch
if _, err = unix.InotifyRmWatch(infd, uint32(wd)); err != nil {
t.Fatalf("InotifyRmWatch: %v", err)
}
}
func inotify_open(t *testing.T) {
// Create temporary files
tempDir := t.TempDir()
tempFile, err := os.CreateTemp(tempDir, "inotify_open_test_file")
if err != nil {
t.Fatalf("TempFile: %v", err)
}
// File closed later in test
// Setup iNotify
infd, err := unix.InotifyInit1(unix.IN_CLOEXEC | unix.IN_NONBLOCK)
if err != nil {
t.Fatalf("InotifyInit1: %v", err)
}
wd, err := unix.InotifyAddWatch(infd, tempFile.Name(), unix.IN_OPEN)
if err != nil {
t.Fatalf("InotifyAddWatch: %v", err)
}
// Trigger Event
name := tempFile.Name()
tempFile.Close()
f, err := os.Open(name)
if err != nil {
t.Fatalf("Open: %v", err)
}
defer f.Close()
// Expect event
buf := make([]byte, unix.SizeofInotifyEvent)
n, err := unix.Read(infd, buf[:])
if err != nil {
t.Fatalf("Read: %v", err)
}
if n == 0 {
t.Fatalf("No event was read from the iNotify fd")
}
// Remove Watch
if _, err = unix.InotifyRmWatch(infd, uint32(wd)); err != nil {
t.Fatalf("InotifyRmWatch: %v", err)
}
}
func TestSockNonblock(t *testing.T) {
ch1 := make(chan int)
go func() {
select {
case <-ch1:
}
client, err := unix.Socket(unix.AF_INET, unix.SOCK_STREAM|unix.SOCK_CLOEXEC, 0)
if err != nil {
t.Fatalf("Socket: %v", err)
}
defer unix.Close(client)
clientSA := unix.SockaddrInet4{Port: 33333, Addr: [4]byte{127, 0, 0, 1}}
err = unix.Connect(client, &clientSA)
if err != nil {
t.Fatalf("Connect: %v", err)
}
select {
case <-ch1:
}
}()
server, err := unix.Socket(unix.AF_INET, unix.SOCK_STREAM|unix.SOCK_CLOEXEC, 0)
if err != nil {
t.Fatalf("Socket: %v", err)
}
defer unix.Close(server)
serverSA := unix.SockaddrInet4{Port: 33333, Addr: [4]byte{}}
err = unix.SetsockoptInt(server, unix.SOL_SOCKET, unix.SO_REUSEADDR, 1)
if err != nil {
t.Fatalf("SetsockoptInt: %v", err)
}
err = unix.Bind(server, &serverSA)
if err != nil {
t.Fatalf("Bind: %v", err)
}
err = unix.Listen(server, 3)
if err != nil {
t.Fatalf("Listen: %v", err)
}
ch1 <- 1
accept, _, err := unix.Accept4(server, unix.SOCK_NONBLOCK|unix.SOCK_CLOEXEC)
if err != nil {
t.Fatalf("Accept: %v", err)
}
buf := make([]byte, 16)
_, err = unix.Read(accept, buf)
if err.Error() != "EDC8102I Operation would block." {
t.Fatalf("Read: Expected error \"EDC8102I Operation would block.\", but got \"%v\"", err)
}
ch1 <- 1
}
func TestSockIPTTL(t *testing.T) {
server, err := unix.Socket(unix.AF_INET, unix.SOCK_STREAM|unix.SOCK_CLOEXEC, 0)
if err != nil {
t.Fatalf("Socket: %v", err)
}
ttl, err := unix.GetsockoptInt(server, unix.IPPROTO_IP, unix.IP_TTL)
if err != nil {
t.Fatalf("GetsockoptInt: %v", err)
}
if ttl != 64 {
t.Fatalf("Expected TTL value of 64, got %v", ttl)
}
err = unix.SetsockoptInt(server, unix.IPPROTO_IP, unix.IP_TTL, 65)
if err != nil {
t.Fatalf("SetsockoptInt: %v", err)
}
ttl, err = unix.GetsockoptInt(server, unix.IPPROTO_IP, unix.IP_TTL)
if err != nil {
t.Fatalf("GetsockoptInt: %v", err)
}
if ttl != 65 {
t.Fatalf("Expected TTL value of 65, got %v", ttl)
}
}
func TestSethostname(t *testing.T) {
name, err := os.Hostname()
if err != nil {
t.Fatalf("Failed to get hostname: %v", err)
}
err = unix.Sethostname([]byte(name))
if !strings.Contains(err.Error(), unix.ENOTSUP.Error()) {
t.Fatalf("Sethostname: Expected error \"EDC5247I Operation not supported.\", but got \"%v\"", err)
}
}
func TestGetrandom(t *testing.T) {
buf := make([]byte, 16)
n, err := unix.Getrandom(buf, unix.GRND_NONBLOCK|unix.GRND_RANDOM)
if err != nil {
t.Fatalf("Getrandom: %v", err)
}
if n != 16 {
t.Fatalf("Expected to read %d bytes. Actually read %d", 16, n)
}
sum := 0
for _, v := range buf {
sum += int(v)
}
if sum == 0 {
t.Fatalf("Getrandom: no random values retrieved")
}
}
func TestTermios(t *testing.T) {
const ioctlReadTermios = unix.TCGETS
const ioctlWriteTermios = unix.TCSETS
// Get address of controlling terminal
tty, err := unix.Ctermid()
if err != nil {
fmt.Fprintf(os.Stderr, "Error: %v\n", err)
t.Skip("No terminal")
}
// Open controlling terminal
f, err := unix.Open(tty, 3, 0755)
if err != nil {
t.Skipf("Skipping because opening /dev/tty failed: %v", err)
}
defer unix.Close(f)
// Test IoctlGetTermios
termios, err := unix.IoctlGetTermios(f, ioctlReadTermios)
// Save old terminal settings to restore
oldTermios := *termios
if err != nil {
t.Fatalf("IoctlGetTermios: %v", err)
}
// This attempts to replicate the behaviour documented for cfmakeraw in
// the termios(3) manpage.
termios.Iflag &^= unix.IGNBRK | unix.BRKINT | unix.PARMRK | unix.ISTRIP | unix.INLCR | unix.IGNCR | unix.ICRNL | unix.IXON
termios.Oflag &^= unix.OPOST
termios.Lflag &^= unix.ECHO | unix.ECHONL | unix.ICANON | unix.ISIG | unix.IEXTEN
termios.Cflag &^= unix.CSIZE | unix.PARENB
termios.Cflag |= unix.CS8
termios.Cc[unix.VMIN] = 1
termios.Cc[unix.VTIME] = 0
// Test IoctlSetTermios
if err := unix.IoctlSetTermios(f, ioctlWriteTermios, termios); err != nil {
t.Fatalf("IoctlSetTermios: %v", err)
}
// Restore
if err := unix.IoctlSetTermios(f, ioctlWriteTermios, &oldTermios); err != nil {
t.Fatalf("IoctlSetTermios: %v", err)
}
}
func TestDup3(t *testing.T) {
data := []byte("Test String")
// Create temporary files
tempDir := t.TempDir()
tempFile, err := os.Create(filepath.Join(tempDir, "dup3_test_file"))
if err != nil {
t.Fatalf("TempFile: %v", err)
}
defer tempFile.Close()
// Duplicate fd
fd1, err := unix.Open(tempFile.Name(), unix.O_RDWR|unix.O_CLOEXEC, 777)
if err != nil {
t.Fatalf("Open: %v", err)
}
defer unix.Close(fd1)
fd2 := 11
if err := unix.Dup3(fd1, fd2, unix.O_CLOEXEC); err != nil {
t.Fatalf("Dup3: %v", err)
}
defer unix.Close(fd2)
// Write
n, err := unix.Write(fd2, data)
if err != nil {
t.Fatalf("Write: %v", err)
}
if n != len(data) {
t.Fatalf("Write: only wrote %d bytes, expected %d", n, len(data))
}
// Read
buf := make([]byte, 16)
n, err = tempFile.Read(buf)
if err != nil {
t.Fatalf("Read: %v", err)
}
if n != len(data) {
t.Fatalf("Read: only read %d bytes, expected %d", n, len(data))
}
// Compare
for i := 0; i < len(data); i++ {
if buf[i] != data[i] {
t.Fatalf("Dup3: data read did not match data written")
}
}
}
func TestWait4(t *testing.T) {
if v, r := zosLeVersion(); v <= 2 && r <= 4 {
t.Skipf("New wait4 can't be used in %d.%d < 2.5", v, r)
}
if os.Getenv("TEST_WAIT4_HELPER") == "1" {
exitCode, err := strconv.Atoi(os.Args[2])
if err != nil {
fmt.Printf("exit code cannot be parsed: %s\n", err)
}
defer os.Exit(exitCode)
for i := 0; i < 50000000; i++ {
}
return
}
const (
childPid = -2
core = 0x80
exited = 0x00
stopped = 0x7F
shift = 8
)
pgid, err := unix.Getpgid(os.Getpid())
if err != nil {
t.Fatal(err)
}
testCases := []struct {
name string
exitCode int
pid int
options int
signals []syscall.Signal
wpid int
err error
ws unix.WaitStatus
}{
{"Child's pgid", 0, -pgid, 0, []syscall.Signal{}, childPid, nil, exited},
{"Any", 0, -1, 0, []syscall.Signal{}, childPid, nil, exited},
{"Pid zero", 0, 0, 0, []syscall.Signal{}, childPid, nil, exited},
{"Child's pid", 0, childPid, 0, []syscall.Signal{}, childPid, nil, exited},
{"Exited with 2", 2, childPid, 0, []syscall.Signal{}, childPid, nil, unix.WaitStatus((2 << shift) | exited)},
{"No hang", 0, childPid, unix.WNOHANG, []syscall.Signal{}, 0, nil, exited},
{"No child", 0, os.Getpid(), 0, []syscall.Signal{}, -1, unix.ECHILD, exited},
{"Inval", 0, -1, -1, []syscall.Signal{}, -1, unix.EINVAL, exited},
{"Killed", 0, childPid, 0, []syscall.Signal{unix.SIGKILL}, childPid, nil, unix.WaitStatus(unix.SIGKILL)},
{"Interrupted", 0, childPid, 0, []syscall.Signal{unix.SIGINT}, childPid, nil, unix.WaitStatus(unix.SIGINT)},
{"Stopped", 0, childPid, unix.WUNTRACED, []syscall.Signal{unix.SIGSTOP}, childPid, nil, unix.WaitStatus((unix.SIGSTOP << shift) | stopped)},
{"Core dump", 0, childPid, unix.WUNTRACED, []syscall.Signal{unix.SIGTRAP}, childPid, nil, unix.WaitStatus(core | unix.SIGTRAP)},
// TODO(paulc): Skipping these two until wait4 behaves the same as in Linux
// {"Continued", 0, cpid, unix.WCONTINUED, []syscall.Signal{unix.SIGSTOP, unix.SIGCONT}, cpid, nil, 0xffff},
// {"Intmin", 0, -2147483648, 0, []syscall.Signal{}, -1, unix.ESRCH, exited},
}
for _, c := range testCases {
t.Run(c.name, func(t *testing.T) {
cmd := exec.Command(os.Args[0], "-test.run=^TestWait4$", fmt.Sprint(c.exitCode))
cmd.Env = []string{"TEST_WAIT4_HELPER=1"}
if err := cmd.Start(); err != nil {
t.Fatal(err)
}
for i, sig := range c.signals {
if err := cmd.Process.Signal(sig); err != nil {
cmd.Process.Kill()
t.Fatal(err)
}
if i != len(c.signals)-1 {
time.Sleep(1000 * time.Millisecond)
}
}
pid, wpid := c.pid, c.wpid
if c.pid == childPid {
pid = cmd.Process.Pid
}
if c.wpid == childPid {
wpid = cmd.Process.Pid
}
ws := unix.WaitStatus(0)
ru := unix.Rusage{}
ret, err := unix.Wait4(pid, &ws, c.options, &ru)
if err != c.err {
t.Fatalf("expected %s error but got %s error\n", c.err, err)
}
if ret != wpid {
t.Fatalf("expected return value of %d but got %d\n", wpid, ret)
}
if ws != c.ws {
t.Fatalf("expected wait status %x but got %x\n", c.ws, ws)
}
if err == nil && len(c.signals) == 0 && c.options&unix.WNOHANG != unix.WNOHANG {
if emptyRU := new(unix.Rusage); ru == *emptyRU {
t.Fatalf("expected non-empty rusage but got %+v", ru)
}
}
cmd.Process.Kill()
})
}
}
func TestNanosleep(t *testing.T) {
waitTime := int64(10000000)
var ts, tsLeftover unix.Timespec
ts = unix.Timespec{
Sec: 0,
Nsec: waitTime,
}
tsLeftover = unix.Timespec{
Sec: 0,
Nsec: 0,
}
t1 := time.Now().UnixNano()
if err := unix.Nanosleep(&ts, &tsLeftover); err != nil {
t.Fatalf("Nanosleep: %v", err)
}
t2 := time.Now().UnixNano()
if t2-t1 < waitTime {
t.Fatalf("Nanosleep: did not wait long enough. Expected: %d, got: %d", waitTime, t2-t1)
}
}
func TestOpenat2(t *testing.T) {
how := &unix.OpenHow{
Flags: unix.O_RDONLY,
}
fd, err := unix.Openat2(unix.AT_FDCWD, ".", how)
if err != nil {
t.Fatalf("openat2: %v", err)
}
if err := unix.Close(fd); err != nil {
t.Fatalf("close: %v", err)
}
// prepare
tempDir := t.TempDir()
subdir := filepath.Join(tempDir, "dir")
if err := os.Mkdir(subdir, 0755); err != nil {
t.Fatal(err)
}
symlink := filepath.Join(subdir, "symlink")
if err := os.Symlink("../", symlink); err != nil {
t.Fatal(err)
}
dirfd, err := unix.Open(subdir, unix.O_RDONLY, 0)
if err != nil {
t.Fatalf("open(%q): %v", subdir, err)
}
defer unix.Close(dirfd)
// openat2 with no extra flags -- should succeed
fd, err = unix.Openat2(dirfd, "symlink", how)
if err != nil {
t.Errorf("Openat2 should succeed, got %v", err)
}
if err := unix.Close(fd); err != nil {
t.Fatalf("close: %v", err)
}
// open with RESOLVE_BENEATH, should result in EXDEV
how.Resolve = unix.RESOLVE_BENEATH
fd, err = unix.Openat2(dirfd, "symlink", how)
if err == nil {
if err := unix.Close(fd); err != nil {
t.Fatalf("close: %v", err)
}
}
if err != unix.EXDEV {
t.Errorf("Openat2 should fail with EXDEV, got %v", err)
}
}
func TestUtimesNanoAt(t *testing.T) {
// z/OS currently does not support setting milli/micro/nanoseconds for files
// The Nsec field will be 0 when trying to get atime/mtime
// Create temp dir and file
f, err := os.Create(filepath.Join(t.TempDir(), "utimesNanoAt_test_file"))
if err != nil {
t.Fatalf("TempFile: %v", err)
}
defer f.Close()
fd := int(f.Fd())
// Set atime and mtime
ts := []unix.Timespec{
unix.Timespec{123456789, 123456789},
unix.Timespec{123456789, 123456789},
}
atimeTS := time.Unix(ts[0].Sec, ts[0].Nsec)
mtimeTS := time.Unix(ts[1].Sec, ts[1].Nsec)
err = unix.UtimesNanoAt(fd, f.Name(), ts, 0)
if err != nil {
t.Fatalf("TestUtimesNanoAt: %v", err)
}
// Compare atime and mtime
var statAfter unix.Stat_t
if err = unix.Fstat(fd, &statAfter); err != nil {
t.Fatalf("Fstat: %v", err)
}
atimeAfter := time.Unix(statAfter.Atim.Sec, statAfter.Atim.Nsec)
mtimeAfter := time.Unix(statAfter.Mtim.Sec, statAfter.Mtim.Nsec)
// TODO (joon): check using time.Equal() once z/OS supports finer timestamps for files
if atimeAfter.Unix() != atimeTS.Unix() {
t.Fatalf("Expected atime to be %v. Got %v", atimeAfter.Unix(), atimeTS.Unix())
}
if mtimeAfter.Unix() != mtimeTS.Unix() {
t.Fatalf("Expected mtime to be %v. Got %v", atimeAfter.Unix(), atimeTS.Unix())
}
}
func TestPivotRoot(t *testing.T) {
if euid != 0 {
t.Skip("euid != 0")
}
err := unix.Unshare(unix.CLONE_NEWNS)
if err != nil {
t.Fatalf("Unshare: %v", err)
}
// Create our 'new_root' and bind mount it to satisfy one of the conditions of pivot_root
newRoot := t.TempDir()
err = unix.Mount(newRoot, newRoot, "", unix.MS_BIND|unix.MS_REC, "")
if err != nil {
t.Fatalf("Mount: %v", err)
}
// Create our 'old_root'
oldRoot, err := os.MkdirTemp(newRoot, "oldRoot")
if err != nil {
t.Fatalf("TempDir: %v", err)
}
// Perform the pivot and check that our old root is now a subfolder in our new root
if err = unix.PivotRoot(newRoot, oldRoot); err != nil {
t.Fatalf("PivotRoot: %v", err)
}
err = unix.Chdir("/")
if err != nil {
t.Fatalf("Chdir: %v", err)
}
if _, err := os.Stat("/" + filepath.Base(oldRoot)); os.IsNotExist(err) {
t.Fatalf("Expected to see old root as a subdirectory.")
}
}
func TestMountUnmount(t *testing.T) {
if v, r := zosLeVersion(); v < 2 || (v == 2 && r < 4) {
t.Skipf("New mount can't be used in %d.%d < 2.5. Run TestLegacyMountUnmount", v, r)
}
if _, err := os.Stat("/proc/self"); errors.Is(err, os.ErrNotExist) {
t.Skip("/proc/self is not exist skipping the test")
}
// Check that TFS is installed on the system, otherwise the test cannot be performed.
b, err := os.ReadFile("/proc/filesystems")
if err != nil {
t.Fatalf("ReadFile: %v", err)
}
filesystems := string(b)
if !strings.Contains(filesystems, "TFS") {
t.Skip("Missing TFS filesystem")
}
// Create a temp directory for the TFS
tempSrc := t.TempDir()
// Mount the TFS
tfs := "testTFS"
err = exec.Command("/usr/sbin/mount", "-t", "TFS", "-f", tfs, tempSrc).Run()
if err != nil {
t.Skip("Could not create TFS")
}
// Create a temp dir and test Mount()
tempTgt := t.TempDir()
err = unix.Mount(tempSrc, tempTgt, "TFS", 0, "")
if err != nil {
t.Fatalf("Mount: %v", err)
}
// Unmount and cleanup
err = unix.Unmount(tempTgt, 0)
if err != nil {
t.Fatalf("Unmount: %v", err)
}
err = exec.Command("/usr/sbin/unmount", "-f", tfs).Run()
if err != nil {
t.Fatalf("Could not remove TFS")
}
}
func TestMountNamespace(t *testing.T) {
if v, r := zosLeVersion(); v <= 2 && r <= 4 {
t.Skipf("Namespaces not available on z/OS %v.%v", v, r)
}
// Check that TFS is installed on the system, otherwise the test cannot be performed.
b, err := os.ReadFile("/proc/filesystems")
if err != nil {
t.Skipf("Problem with reading /proc/filesystems: %v", err)
}
filesystems := string(b)
if !strings.Contains(filesystems, "TFS") {
t.Skipf("Missing TFS filesystem")
}
if os.Getenv("SETNS_HELPER_PROCESS") == "1" {
err := unix.Unshare(unix.CLONE_NEWNS)
if err != nil {
t.Skipf("Unshare: %v", err)
}
// Create a temp directory for the TFS
tempSrc := t.TempDir()
// Mount the TFS
err = exec.Command("/usr/sbin/mount", "-t", "TFS", "-f", "testTFS", tempSrc).Run()
if err != nil {
t.Skipf("Could not create TFS")
}
data, err := os.ReadFile("/proc/mounts")
if err != nil {
t.Fatalf("ReadFile: %v", err)
}
err = os.WriteFile(os.Getenv("MNT_NS_FILE"), data, 644)
if err != nil {
t.Fatalf("WriteFile: %v", err)
}
return
}
// Make a file to copy the child process' mount information
f, err := os.CreateTemp("", "mntNsTestFile")
if err != nil {
t.Fatalf("Could not create temp file")
}
defer os.Remove(f.Name())
f.Close()
cmd := exec.Command(os.Args[0], "-test.v", "-test.run=^TestMountNamespace$")
cmd.Env = append(os.Environ(), "SETNS_HELPER_PROCESS=1")
cmd.Env = append(cmd.Env, "MNT_NS_FILE="+f.Name())
// Create the child process and get the path of the TFS mount to be cleaned up
out, err := cmd.CombinedOutput()
if err != nil {
t.Fatalf("helper process failed: %v\n%v", err, string(out))
}
if strings.Contains(string(out), "SKIP") {
t.Skipf("helper process: %v", string(out))
}
tfsDir := strings.Split(string(out), "\n")[1]
defer os.RemoveAll(tfsDir)
d1, err := os.ReadFile(f.Name())
if err != nil {
t.Fatalf("ReadFile: %v", err)
}
d2, err := os.ReadFile("/proc/mounts")
if err != nil {
t.Fatalf("ReadFile: %v", err)
}
// Check that the TFS created in the child process was not made in the parent
if !strings.Contains(string(d1), tfsDir) {
t.Errorf("Expected to see %v in child process' /proc/mounts", tfsDir)
}
if strings.Contains(string(d2), tfsDir) {
t.Errorf("Expected not to see %v in parent process' /proc/mounts", tfsDir)
}
}
func TestMkfifoat(t *testing.T) {
name := fmt.Sprintf("fifo%d", os.Getpid())
pname := fmt.Sprintf("/tmp/fifo%d", os.Getpid())
dirStream, err := unix.Opendir("/tmp")
if err != nil {
t.Fatalf("Opendir: %v", err)
}
defer unix.Closedir(dirStream)
dirFd, err := unix.Dirfd(dirStream)
if err != nil {
t.Fatalf("Dirfd: %v", err)
}
if dirFd < 0 {
t.Fatalf("Dirfd: fd < 0, (fd = %v)", dirFd)
}
err = unix.Mkfifoat(dirFd, name, 0666)
if err != nil {
t.Fatalf("Mkfifoat: failed to create FIFO: %v at %d", err, dirFd)
}
st, err := os.Stat(pname)
if err != nil {
t.Fatalf("Mkfifoat: failed to stat FIFO: %s %v", pname, err)
}
if st.Mode()&os.ModeNamedPipe != os.ModeNamedPipe {
t.Fatalf("Mkfifoat: %s is not a FIFO", pname)
}
os.Remove(pname)
}
func TestMkdirat(t *testing.T) {
name := fmt.Sprintf("dir%d", os.Getpid())
pname := fmt.Sprintf("/tmp/dir%d", os.Getpid())
dirStream, err := unix.Opendir("/tmp")
if err != nil {
t.Fatalf("Opendir: %v", err)
}
defer unix.Closedir(dirStream)
dirFd, err := unix.Dirfd(dirStream)
if err != nil {
t.Fatalf("Dirfd: %v", err)
}
if dirFd < 0 {
t.Fatalf("Dirfd: fd < 0, (fd = %v)", dirFd)
}
err = unix.Mkdirat(dirFd, name, 0777)
if err != nil {
t.Fatalf("Mkdirat: failed to create directory: %v at %d", err, dirFd)
}
st, err := os.Stat(pname)
if err != nil {
t.Fatalf("Mkdirat: failed to stat directory: %s %v", pname, err)
}
if !st.Mode().IsDir() {
t.Fatalf("Mkdirat: %s is not a directory", pname)
}
os.Remove(pname)
}
func TestLinkat(t *testing.T) {
lName := fmt.Sprintf("testLinkatLink%d", os.Getpid())
dirStream, err := unix.Opendir("/tmp")
if err != nil {
t.Fatalf("Opendir: %v", err)
}
defer unix.Closedir(dirStream)
dirFd, err := unix.Dirfd(dirStream)
if err != nil {
t.Fatalf("Dirfd: %v", err)
}
if dirFd < 0 {
t.Fatalf("Dirfd: fd < 0, (fd = %v)", dirFd)
}
f, err := os.CreateTemp("/tmp", "tesLinkatFile")
if err != nil {
t.Fatalf("CreateTemp: %v", err)
}
defer os.Remove(f.Name())
defer f.Close()
err = unix.Linkat(dirFd, f.Name(), dirFd, lName, 0)
if err != nil {
t.Fatalf("Linkat: Failed to create link: %v", err)
}
defer os.Remove("/tmp/" + lName)
fInfo, err := os.Lstat(f.Name())
if err != nil {
t.Fatalf("Lstat: %v", err)
}
lInfo, err := os.Lstat(filepath.Join("/tmp/", lName))
if err != nil {
t.Fatalf("Lstat: %v", err)
}
if !os.SameFile(fInfo, lInfo) {
t.Errorf("Expected FileInfo for %s to match %s", lName, f.Name())
}
}
func TestSymlinkat(t *testing.T) {
f, err := os.Create(filepath.Join(t.TempDir(), "symlinkatTestFile"))
if err != nil {
t.Fatal("CreateTemp:", err)
}
f.Close()
dir, err := os.Open(filepath.Dir(f.Name()))
if err != nil {
t.Fatal("Open:", err)
}
defer dir.Close()
linkName := fmt.Sprintf("testSymlink%d", os.Getpid())
err = unix.Symlinkat(f.Name(), int(dir.Fd()), linkName)
if err != nil {
t.Fatal("Symlinkat:", err)
}
buf := make([]byte, 256)
_, err = unix.Readlinkat(int(dir.Fd()), linkName, buf)
if err != nil {
t.Fatal("Readlink:", err)
}
if string(f.Name()) != string(buf[:len(f.Name())]) {
t.Errorf("Expected buffer contents to be: %s. Got: %s.", f.Name(), string(buf[:]))
}
}
func TestMknodat(t *testing.T) {
if euid != 0 {
t.Skip("euid != 0")
}
dirStream, err := unix.Opendir("/tmp")
if err != nil {
t.Fatalf("Opendir: %v", err)
}
defer unix.Closedir(dirStream)
dirFd, err := unix.Dirfd(dirStream)
if err != nil {
t.Fatalf("Dirfd: %v", err)
}
if dirFd < 0 {
t.Fatalf("Dirfd: fd < 0, (fd = %v)", dirFd)
}
name := fmt.Sprintf("mknodatTest%d", os.Getpid())
fifoName := fmt.Sprintf("mknodatTestFIFO%d", os.Getpid())
scfName := fmt.Sprintf("mknodatTestSCF%d", os.Getpid())
err = unix.Mknodat(dirFd, name, unix.S_IFREG, 0)
if err != nil {
t.Fatalf("Mknodat - regular: %v", err)
}
defer os.Remove("/tmp/" + name)
err = unix.Mknodat(dirFd, fifoName, unix.S_IFIFO, 0)
if err != nil {
t.Fatalf("Mknodat - directory: %v", err)
}
defer os.Remove("/tmp/" + fifoName)
err = unix.Mknodat(dirFd, scfName, unix.S_IFCHR|unix.S_IRUSR|unix.S_IWUSR, 0x00010000|0x0001)
if err != nil {
t.Fatalf("Mknodat - character special file: %v", err)
}
defer os.Remove("/tmp/" + scfName)
}
func TestFchownat(t *testing.T) {
if euid != 0 {
t.Skip("euid != 0")
}
f, err := os.Create(filepath.Join(t.TempDir(), "fchownatTestFile"))
if err != nil {
t.Fatalf("CreateTemp: %v", err)
}
defer f.Close()
dir, err := os.Open(filepath.Dir(f.Name()))
if err != nil {
t.Fatalf("Open: %v", err)
}
defer dir.Close()
dirfd := int(dir.Fd())
err = unix.Fchownat(0, f.Name(), os.Getuid(), os.Getgid(), 0)
if err != nil {
t.Errorf("Fchownat: %v", err)
}
unix.Fchownat(dirfd, filepath.Base(f.Name()), os.Getuid(), os.Getgid(), 0)
if err != nil {
t.Errorf("Fchownat: %v", err)
}
err = unix.Fchownat(dirfd, "blah", os.Getuid(), os.Getgid(), 0)
if err != nil {
if !strings.Contains(err.Error(), "EDC5129I No such file or directory.") {
t.Errorf("Expected: EDC5129I No such file or directory. Got: %v", err)
}
} else {
t.Error("Fchownat: Expected to get error \"EDC5129I No such file or directory.\"")
}
}
func TestFaccessat(t *testing.T) {
f, err := os.CreateTemp("/tmp", "faccessatTestFile")
if err != nil {
t.Fatalf("CreateTemp: %v", err)
}
defer os.Remove(f.Name())
defer f.Close()
dirStream, err := unix.Opendir("/tmp")
if err != nil {
t.Fatalf("Opendir: %v", err)
}
defer unix.Closedir(dirStream)
dirfd, err := unix.Dirfd(dirStream)
if err != nil {
t.Fatalf("Dirfd: %v", err)
}
if dirfd < 0 {
t.Fatalf("Dirfd: fd < 0, (fd = %v)", dirfd)
}
err = unix.Faccessat(dirfd, filepath.Base(f.Name()), unix.R_OK|unix.W_OK, unix.AT_EACCESS)
if err != nil {
t.Errorf("Faccessat - relative file path: %v", err)
}
err = unix.Faccessat2(dirfd, filepath.Base(f.Name()), unix.R_OK|unix.W_OK, unix.AT_EACCESS)
if err != nil {
t.Errorf("Faccessat - relative file path: %v", err)
}
err = unix.Faccessat(dirfd, f.Name(), unix.R_OK|unix.W_OK, unix.AT_EACCESS)
if err != nil {
t.Errorf("Faccessat - absolute file path: %v", err)
}
err = unix.Faccessat(0, filepath.Base(f.Name()), unix.R_OK, unix.AT_EACCESS)
if err != nil {
if !strings.Contains(err.Error(), "EDC5135I Not a directory.") {
t.Errorf("Expected: EDC5135I Not a directory. Got: %v", err)
}
} else {
t.Error("Faccessat: Expected to get error \"EDC5135I Not a directory.\"")
}
err = unix.Faccessat(0, "/", unix.R_OK, unix.AT_EACCESS)
if err != nil {
t.Errorf("Faccessat - read root directory: %v", err)
}
err = unix.Faccessat(0, "/", unix.W_OK, unix.AT_EACCESS)
if err != nil {
if !strings.Contains(err.Error(), "EDC5141I Read-only file system.") {
t.Errorf("Expected: EDC5141I Read-only file system. Got: %v", err)
}
} else {
if BypassTestOnUntil("zoscan56", "2024-04-01T12:45:21.123Z") {
fmt.Fprintf(os.Stderr, "Faccessat: Expected to get error \"EDC5141I Read-only file system.\"")
} else {
t.Error("Faccessat: Expected to get error \"EDC5141I Read-only file system.\"")
}
}
}
func TestUnlinkat(t *testing.T) {
tmpdir := t.TempDir()
f, err := os.CreateTemp(tmpdir, "unlinkatTestFile")
if err != nil {
log.Fatal("CreateTemp:", err)
}
// file close later
dirStream, err := unix.Opendir(tmpdir)
if err != nil {
t.Fatalf("Opendir: %v", err)
}
defer unix.Closedir(dirStream)
dirfd, err := unix.Dirfd(dirStream)
if err != nil {
t.Fatalf("Dirfd: %v", err)
}
if dirfd < 0 {
t.Fatalf("Dirfd: fd < 0, (fd = %v)", dirfd)
}
if err := f.Close(); err != nil {
t.Fatalf("Close: %v", err)
}
err = unix.Unlinkat(dirfd, filepath.Base(f.Name()), 0)
if err != nil {
t.Fatalf("Unlinkat: %v", err)
}
_, err = os.Open(f.Name())
if err != nil {
if !os.IsNotExist(err) {
t.Errorf("Expected to get error \"EDC5129I No such file or directory\". Got: %v", err)
}
} else {
t.Error("Unlinkat: Expected to get error \"EDC5129I No such file or directory\"")
}
err = unix.Unlinkat(dirfd, tmpdir, unix.AT_REMOVEDIR)
if err != nil {
t.Fatalf("Unlinkat: %v", err)
}
_, err = os.Open(tmpdir)
if err != nil {
if !os.IsNotExist(err) {
t.Errorf("Expected to get error \"EDC5129I No such file or directory\". Got: %v", err)
}
} else {
t.Error("Unlinkat: Expected to get error \"EDC5129I No such file or directory\"")
}
}
func TestRenameat(t *testing.T) {
defer chtmpdir(t)()
from, to := "renamefrom", "renameto"
touch(t, from)
err := unix.Renameat(unix.AT_FDCWD, from, unix.AT_FDCWD, to)
if err != nil {
t.Fatalf("Renameat: unexpected error: %v", err)
}
_, err = os.Stat(to)
if err != nil {
t.Error(err)
}
_, err = os.Stat(from)
if err == nil {
t.Errorf("Renameat: stat of renamed file %q unexpectedly succeeded", from)
}
}
func TestRenameat2(t *testing.T) {
defer chtmpdir(t)()
from, to := "renamefrom", "renameto"
touch(t, from)
err := unix.Renameat2(unix.AT_FDCWD, from, unix.AT_FDCWD, to, 0)
if err != nil {
t.Fatalf("Renameat2: unexpected error: %v", err)
}
_, err = os.Stat(to)
if err != nil {
t.Error(err)
}
_, err = os.Stat(from)
if err == nil {
t.Errorf("Renameat2: stat of renamed file %q unexpectedly succeeded", from)
}
touch(t, from)
err = unix.Renameat2(unix.AT_FDCWD, from, unix.AT_FDCWD, to, unix.RENAME_NOREPLACE)
if err != nil {
if err.Error() != "EDC5117I File exists." {
t.Errorf("Renameat2: expected to get error \"EDC5117I File exists.\" Got: %v", err)
}
} else {
t.Errorf("Renameat2: Unexpected error: %v", err)
}
}
func TestFchmodat(t *testing.T) {
defer chtmpdir(t)()
touch(t, "file1")
err := os.Symlink("file1", "symlink1")
if err != nil {
t.Fatal(err)
}
mode := os.FileMode(0444)
err = unix.Fchmodat(unix.AT_FDCWD, "symlink1", uint32(mode), 0)
if err != nil {
t.Fatalf("Fchmodat: unexpected error: %v", err)
}
fi, err := os.Stat("file1")
if err != nil {
t.Fatal(err)
}
if fi.Mode() != mode {
t.Errorf("Fchmodat: failed to change file mode: expected %v, got %v", mode, fi.Mode())
}
mode = os.FileMode(0644)
didChmodSymlink := true
err = unix.Fchmodat(unix.AT_FDCWD, "symlink1", uint32(mode), unix.AT_SYMLINK_NOFOLLOW)
if err != nil {
if err == unix.EOPNOTSUPP {
didChmodSymlink = false
} else {
t.Fatalf("Fchmodat: unexpected error: %v", err)
}
}
if !didChmodSymlink {
// Didn't change mode of the symlink. On Linux, the permissions
// of a symbolic link are always 0777 according to symlink(7)
mode = os.FileMode(0777)
}
var st unix.Stat_t
err = unix.Lstat("symlink1", &st)
if err != nil {
t.Fatal(err)
}
got := os.FileMode(st.Mode & 0777)
if got != mode {
t.Errorf("Fchmodat: failed to change symlink mode: expected %v, got %v", mode, got)
}
}
func TestPosix_openpt(t *testing.T) {
masterfd, err := unix.Posix_openpt(unix.O_RDWR)
if err != nil {
t.Fatal(err)
}
defer unix.Close(masterfd)
_, err = unix.Grantpt(masterfd)
if err != nil {
t.Fatal(err)
}
_, err = unix.Unlockpt(masterfd)
if err != nil {
t.Fatal(err)
}
slavename, err := unix.Ptsname(masterfd)
if err != nil {
t.Fatal(err)
}
fd, err := unix.Open(slavename, unix.O_RDWR, 0)
if err != nil {
t.Fatal(err)
}
unix.Close(fd)
}
func compareStat_t(t *testing.T, otherStat string, st1, st2 *unix.Stat_t) {
if st2.Dev != st1.Dev {
t.Errorf("%s/Fstatat: got dev %v, expected %v", otherStat, st2.Dev, st1.Dev)
}
if st2.Ino != st1.Ino {
t.Errorf("%s/Fstatat: got ino %v, expected %v", otherStat, st2.Ino, st1.Ino)
}
if st2.Mode != st1.Mode {
t.Errorf("%s/Fstatat: got mode %v, expected %v", otherStat, st2.Mode, st1.Mode)
}
if st2.Uid != st1.Uid {
t.Errorf("%s/Fstatat: got uid %v, expected %v", otherStat, st2.Uid, st1.Uid)
}
if st2.Gid != st1.Gid {
t.Errorf("%s/Fstatat: got gid %v, expected %v", otherStat, st2.Gid, st1.Gid)
}
if st2.Size != st1.Size {
t.Errorf("%s/Fstatat: got size %v, expected %v", otherStat, st2.Size, st1.Size)
}
}
func TestFstatat(t *testing.T) {
defer chtmpdir(t)()
touch(t, "file1")
var st1 unix.Stat_t
err := unix.Stat("file1", &st1)
if err != nil {
t.Fatalf("Stat: %v", err)
}
var st2 unix.Stat_t
err = unix.Fstatat(unix.AT_FDCWD, "file1", &st2, 0)
if err != nil {
t.Fatalf("Fstatat: %v", err)
}
compareStat_t(t, "Stat", &st1, &st2)
err = os.Symlink("file1", "symlink1")
if err != nil {
t.Fatal(err)
}
err = unix.Lstat("symlink1", &st1)
if err != nil {
t.Fatalf("Lstat: %v", err)
}
err = unix.Fstatat(unix.AT_FDCWD, "symlink1", &st2, unix.AT_SYMLINK_NOFOLLOW)
if err != nil {
t.Fatalf("Fstatat: %v", err)
}
compareStat_t(t, "Lstat", &st1, &st2)
}
func TestFreezeUnfreeze(t *testing.T) {
rv, rc, rn := unix.Bpx4ptq(unix.QUIESCE_FREEZE, "FREEZE")
if rc != 0 {
t.Fatalf(fmt.Sprintf("Bpx4ptq FREEZE %v %v %v\n", rv, rc, rn))
}
rv, rc, rn = unix.Bpx4ptq(unix.QUIESCE_UNFREEZE, "UNFREEZE")
if rc != 0 {
t.Fatalf(fmt.Sprintf("Bpx4ptq UNFREEZE %v %v %v\n", rv, rc, rn))
}
}
func TestPtrace(t *testing.T) {
cmd := exec.Command("/bin/sleep", "1000")
cmd.Stdout = os.Stdout
err := cmd.Start()
if err != nil {
log.Fatal(err)
}
rv, rc, rn := unix.Bpx4ptr(unix.PT_ATTACH, int32(cmd.Process.Pid), unsafe.Pointer(uintptr(0)), unsafe.Pointer(uintptr(0)), unsafe.Pointer(uintptr(0)))
if rc != 0 {
t.Fatalf("ptrace: Bpx4ptr rv %d, rc %d, rn %d\n", rv, rc, rn)
}
cmd.Process.Kill()
}
func TestFutimesat(t *testing.T) {
// Create temp dir and file
tempDir := t.TempDir()
dir, err := os.Open(tempDir)
if err != nil {
t.Fatal("Can not open tempDir: ", tempDir)
}
defer dir.Close()
tempFile, err := os.CreateTemp(tempDir, "futimesat_test_file")
if err != nil {
t.Fatalf("TempFile: %s", err.Error())
}
defer tempFile.Close()
// Set mod time to newTime
newTime := time.Date(2001, time.Month(2), 15, 7, 7, 7, 0, time.UTC)
err = unix.Futimesat(
int(dir.Fd()),
filepath.Base(tempFile.Name()),
[]unix.Timeval{
unix.Timeval{Sec: newTime.Unix(), Usec: 0},
unix.Timeval{Sec: newTime.Unix(), Usec: 0},
})
if err != nil {
t.Fatalf("TestFutimes: %v", err)
}
// Compare mod time
stats, err := tempFile.Stat()
if err != nil {
t.Fatalf("Stat: %v", err)
}
modTime := stats.ModTime()
if modTime.UTC() != newTime {
t.Fatalf("TestFutimes: modTime = %v, want %v", modTime.UTC(), newTime)
}
}
func TestInotifyAccess(t *testing.T) {
// Create temporary files
tempFile, err := os.Create(filepath.Join(t.TempDir(), "inotify_access_test_file"))
if err != nil {
t.Fatalf("TempFile: %v", err)
}
defer tempFile.Close()
// Setup iNotify
infd, err := unix.InotifyInit()
if err != nil {
t.Fatalf("InotifyInit1: %v", err)
}
wd, err := unix.InotifyAddWatch(infd, tempFile.Name(), unix.IN_ACCESS)
if err != nil {
t.Fatalf("InotifyAddWatch: %v", err)
}
// Trigger Event
n, err := tempFile.Write([]byte("Writing before reading"))
if err != nil {
t.Fatalf("Write: %v", err)
}
if n <= 0 {
t.Fatalf("Did not write any data")
}
tempFile.Seek(0, 0)
buf := make([]byte, 64)
n, err = tempFile.Read(buf)
if err != nil {
t.Fatalf("Read: %v", err)
}
if n <= 0 {
t.Fatalf("Did not read any data")
}
// Expect event
buf = make([]byte, unix.SizeofInotifyEvent)
n, err = unix.Read(infd, buf[:])
if n == -1 {
t.Fatalf("No event was read from the iNotify fd")
}
// Remove Watch
if _, err = unix.InotifyRmWatch(infd, uint32(wd)); err != nil {
t.Fatalf("InotifyRmWatch: %v", err)
}
}
func TestAccess(t *testing.T) {
tempFile, err := os.Create(filepath.Join(t.TempDir(), "test_access"))
if err != nil {
t.Fatal("fail to create temp file ", tempFile)
}
defer tempFile.Close()
err = unix.Access(tempFile.Name(), unix.R_OK|unix.W_OK)
if err != nil {
t.Fatalf("error when access %s: %v", tempFile.Name(), err)
}
err = unix.Access("not_exist_file", unix.F_OK)
if err == nil {
t.Fatalf("error when access not exist file: %v", err)
}
}
func TestCreat(t *testing.T) {
tempFile, err := os.Create(filepath.Join(t.TempDir(), "test_create"))
if err != nil {
t.Fatal("fail to create temp file ", tempFile)
}
defer tempFile.Close()
tempFile.Write([]byte("random1"))
if err != nil {
t.Fatal("error write to file: ", err)
}
// creat
fd, err := unix.Creat(tempFile.Name(), 0o777)
if err != nil {
t.Fatal("Creat error: ", err)
}
writeContent := []byte("random2")
n, err := unix.Write(fd, writeContent)
if err != nil {
t.Fatal("Write error: ", err)
} else if n <= 0 {
t.Fatal("Write error: 0 is written")
}
// Using creat is the equivalent of using the open callable service
// with the create, truncate, and write-only options:
// so we can not use the same file descriptor
b, err := os.ReadFile(tempFile.Name())
if err != nil {
t.Fatal("Read error: ", err)
}
if n <= 0 {
t.Fatal("Creat error: Cannot truncate file")
}
if string(b) != string(writeContent) {
t.Fatal("data missmatch: expect ", string(writeContent), " actual: ", string(b))
}
// testing file create function
newFile := tempFile.Name() + "2"
fd2, err := unix.Creat(newFile, 0o777)
if err != nil {
t.Fatal("Creat error: ", err)
}
writeContent = []byte("random3")
n, err = unix.Write(fd2, writeContent)
if err != nil {
t.Fatal("Write error: ", err)
} else if n <= 0 {
t.Fatal("Write error: 0 is written")
}
b, err = os.ReadFile(newFile)
if err != nil {
t.Fatal("Read error: ", err)
}
if n <= 0 {
t.Fatal("Creat error: Cannot truncate file")
}
if string(b) != string(writeContent) {
t.Fatal("data missmatch: expect ", string(writeContent), " actual: ", string(b))
}
}
func TestGetPageSize(t *testing.T) {
size := unix.Getpagesize()
if size <= 0 {
t.Fatal("get page size return: ", size)
}
}
func TestSyscallSetegid(t *testing.T) {
err := unix.Setegid(unix.Getgid())
if err != nil {
t.Fatal("error setting euid: ", err)
}
id := unix.Getegid()
if id != unix.Getgid() {
t.Fatal("euid mismatch: expect ", unix.Getgid(), ", actual ", id)
}
}
func TestSyscallSeteuid(t *testing.T) {
err := unix.Seteuid(unix.Getuid())
if err != nil {
t.Fatal("error setting euid: ", err)
}
id := unix.Geteuid()
if id != unix.Getuid() {
t.Fatal("euid mismatch: expect ", unix.Getuid(), ", actual ", id)
}
}
func TestSyscallSetgid(t *testing.T) {
err := unix.Setgid(unix.Getegid())
if err != nil {
t.Fatal("error setting gid: ", err)
}
id := unix.Getgid()
if id != unix.Getegid() {
t.Fatal("guid mismatch: expect 0, actual ", id)
}
}
func TestSyscallSetpgid(t *testing.T) {
if euid != 0 {
t.Skip("euid != 0")
}
pid := unix.Getpid()
pgid, _ := unix.Getpgid(pid)
err := unix.Setpgid(pid, pgid)
if err != nil {
t.Fatal("error setting pgid: ", err)
}
id, err := unix.Getpgid(pid)
if err != nil {
t.Fatal("Getpgid error: ", err)
}
if gid, _ := unix.Getpgid(pid); gid != id {
t.Fatal("pgid mismatch: expect ", gid, ", actual ", id)
}
}
func TestSyscallSetregid(t *testing.T) {
gid := unix.Getgid()
err := unix.Setregid(gid, gid)
if err != nil {
t.Fatal("error setting regid: ", err)
}
// currently missing Getresgid can not validate
// The get function also not provided in syscall package as well as other platform
}
func TestSyscallSetreuid(t *testing.T) {
uid := unix.Getuid()
err := unix.Setreuid(uid, uid)
if err != nil {
t.Fatal("error setting reuid: ", err)
}
// currently missing Getresgid can not validate
// The get function also not provided in syscall package as well as other platform
}
func TestWriteAndSync(t *testing.T) {
// this test cannot really test sync function
// since unix.write does not require a sync function to actual write to the file
tempFile, err := os.Create(filepath.Join(t.TempDir(), "test_write_and_sync"))
if err != nil {
t.Fatal("error: ", err)
}
defer tempFile.Close()
fileContent := "hello world"
n, err := unix.Write(int(tempFile.Fd()), []byte(fileContent))
if err != nil {
t.Fatal("write error: ", err)
}
if n != len(fileContent) {
t.Fatal("error: write length mismatch")
}
unix.Sync()
b := make([]byte, len(fileContent), 256)
unix.Seek(int(tempFile.Fd()), 0, 0)
_, err = unix.Read(int(tempFile.Fd()), b)
if err != nil {
t.Fatal("read error: ", err)
}
if string(b) != fileContent {
t.Fatal("file data mismatch: expect ", fileContent, " actual", string(b))
}
}
func TestTimes(t *testing.T) {
var startTimes, endTimes unix.Tms
// Get the start time
_, err := unix.Times(&startTimes)
if err != nil {
t.Fatal("times error: ", err)
}
sum := 0
// Perform some operations
for i := 0; i < 1000000000; i++ {
sum += i % 100
}
// Get the end time
_, err = unix.Times(&endTimes)
if err != nil {
t.Fatal("times error: ", err)
}
if int64(endTimes.Utime)-int64(startTimes.Utime) <= 0 || int64(endTimes.Stime)-int64(startTimes.Stime) <= 0 {
t.Fatal("times error: endtime - starttime <= 0")
}
}
func TestMlock(t *testing.T) {
if euid != 0 {
t.Skip("euid != 0")
}
twoM := 2 * 1024 * 1024
b := make([]byte, twoM, twoM)
for i := 0; i < twoM; i++ {
b[i] = byte(i % 127)
}
err := unix.Mlock(b)
if err != nil {
t.Fatal("mlock error: ", err)
}
for i := 0; i < twoM; i++ {
if b[i] != byte(i%127) {
t.Fatal("error: memory not correct: expect ", i%127, " actual ", b[i])
}
}
err = unix.Munlock(b)
if err != nil {
t.Fatal("munlock error: ", err)
}
for i := 0; i < twoM; i++ {
if b[i] != byte(i%127) {
t.Fatal("error: memory not correct: expect ", i%127, " actual ", b[i])
}
}
}
func TestMlockAll(t *testing.T) {
if euid != 0 {
t.Skip("euid != 0")
}
twoM := 2 * 1024 * 1024
b := make([]byte, twoM, twoM)
for i := 0; i < twoM; i++ {
b[i] = byte(i % 127)
}
// Mlockall flag do not have zos semantics, so passing 0
err := unix.Mlockall(0)
if err != nil {
t.Fatal("mlock error: ", err)
}
for i := 0; i < twoM; i++ {
if b[i] != byte(i%127) {
t.Fatal("error: memory not correct: expect ", i%127, " actual ", b[i])
}
}
err = unix.Munlockall()
if err != nil {
t.Fatal("munlock error: ", err)
}
for i := 0; i < twoM; i++ {
if b[i] != byte(i%127) {
t.Fatal("error: memory not correct: expect ", i%127, " actual ", b[i])
}
}
}
func TestGettid(t *testing.T) {
tid := unix.Gettid()
if tid < 0 {
t.Fatal("error: tid less than 0: tid = ", tid)
}
}
func TestSetns(t *testing.T) {
// TODO (joon): for some reason changing ipc on zos fails
namespaces := map[string]int{
// "ipc": unix.CLONE_NEWIPC,
"uts": unix.CLONE_NEWUTS,
"net": unix.CLONE_NEWNET,
// "pid": unix.CLONE_NEWPID,
}
if unix.Geteuid() != 0 {
t.Skip("euid != 0")
}
if os.Getenv("SETNS_HELPER_PROCESS") == "1" {
pid := unix.Getppid()
fmt.Scanln()
for k, v := range namespaces {
path := fmt.Sprintf("/proc/%d/ns/%s", pid, k)
fd, err := unix.Open(path, unix.O_RDONLY, 0)
err = unix.Setns(fd, v)
if err != nil {
t.Fatalf("Setns failed: %v", err)
}
}
for {
}
}
cmd := exec.Command(os.Args[0], "-test.run=^TestSetns$")
cmd.Env = append(os.Environ(), "SETNS_HELPER_PROCESS=1")
stdin, err := cmd.StdinPipe()
if err != nil {
t.Fatalf("Failed to get stdin for helper process: %v\n", err)
}
if err := cmd.Start(); err != nil {
t.Fatalf("failed to create helper process: %v\n", err)
}
defer cmd.Process.Kill()
ppid := unix.Getpid()
pid := cmd.Process.Pid
for k, _ := range namespaces {
hPath := fmt.Sprintf("/proc/%d/ns/%s", pid, k)
pPath := fmt.Sprintf("/proc/%d/ns/%s", ppid, k)
hFI, _ := os.Stat(hPath)
pFI, _ := os.Stat(pPath)
if !os.SameFile(hFI, pFI) {
t.Fatalf("namespace links for %s did not match before calling Unshare in parent\n", k)
}
}
unix.Unshare(unix.CLONE_NEWUTS | unix.CLONE_NEWNET)
for k, _ := range namespaces {
hPath := fmt.Sprintf("/proc/%d/ns/%s", pid, k)
pPath := fmt.Sprintf("/proc/%d/ns/%s", ppid, k)
hFI, _ := os.Stat(hPath)
pFI, _ := os.Stat(pPath)
if os.SameFile(hFI, pFI) {
t.Fatalf("Setns: namespace link for %s matched after calling Unshare but before Setns\n", k)
}
}
stdin.Write([]byte("\n"))
stdin.Close()
time.Sleep(1000 * time.Millisecond)
for k, _ := range namespaces {
hPath := fmt.Sprintf("/proc/%d/ns/%s", pid, k)
pPath := fmt.Sprintf("/proc/%d/ns/%s", ppid, k)
hFI, _ := os.Stat(hPath)
pFI, _ := os.Stat(pPath)
if !os.SameFile(hFI, pFI) {
t.Errorf("Setns: namespace link for %s did not match after calling Setns\n", k)
}
}
}
func stringsFromByteSlice(buf []byte) []string {
var result []string
off := 0
for i, b := range buf {
if b == 0 {
result = append(result, string(buf[off:i]))
off = i + 1
}
}
return result
}
// This test is based on mmap_unix_test, but tweaked for z/OS, which does not support memadvise
// or anonymous mmapping.
func TestConsole2(t *testing.T) {
var cmsg unix.ConsMsg2
var nullptr *byte
var cmsg_cmd uint32
cmsg_rout := [2]uint32{1, 0}
cmsg_desc := [2]uint32{12, 0}
cmsg.Cm2Format = unix.CONSOLE_FORMAT_2
msg := "__console2 test"
cmsg.Cm2Msg = &unix.ZosStringToEbcdicBytes(msg, true)[0]
cmsg.Cm2Msglength = uint32(len(msg))
cmsg.Cm2Routcde = &cmsg_rout[0]
cmsg.Cm2Descr = &cmsg_desc[0]
cmsg.Cm2Token = 0
err := unix.Console2(&cmsg, nullptr, &cmsg_cmd)
if err != nil {
t.Fatalf("__console2: %v", err)
}
}
func TestConsole2modify(t *testing.T) {
if os.Getenv("ZOS_MANUAL_TEST") != "1" {
t.Skip("This test is not run unless env-var ZOS_MANUAL_TEST=1 is set")
}
job, err := unix.ZosJobname()
if err != nil {
t.Fatalf("Failed to get jobname %v", err)
}
var cmsg unix.ConsMsg2
var cmsg_cmd uint32
cmsg_rout := [2]uint32{1, 0}
cmsg_desc := [2]uint32{12, 0}
cmsg.Cm2Format = unix.CONSOLE_FORMAT_2
msg := "Issue console command 'F " + job + ",APPL=123' to continue"
cmsg.Cm2Msg = &unix.ZosStringToEbcdicBytes(msg, true)[0]
cmsg.Cm2Msglength = uint32(len(msg))
cmsg.Cm2Routcde = &cmsg_rout[0]
cmsg.Cm2Descr = &cmsg_desc[0]
cmsg.Cm2Token = 0
var modstr [128]byte
t.Logf("Issue console command 'F %s,APPL=123' to continue\n", job)
err = unix.Console2(&cmsg, &modstr[0], &cmsg_cmd)
if err != nil {
t.Fatalf("__console2: %v", err)
}
recv := unix.ZosEbcdicBytesToString(modstr[:], true)
if recv != "123" || cmsg_cmd != 1 {
t.Fatalf("__console2 modify: Got %s %x, Expect 123 1\n", unix.ZosEbcdicBytesToString(modstr[:], true), cmsg_cmd)
}
t.Logf("Got %s %x\n", unix.ZosEbcdicBytesToString(modstr[:], true), cmsg_cmd)
}
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