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-rw-r--r--dependencies/pkg/mod/golang.org/x/sys@v0.1.0/unix/syscall_zos_test.go863
1 files changed, 863 insertions, 0 deletions
diff --git a/dependencies/pkg/mod/golang.org/x/sys@v0.1.0/unix/syscall_zos_test.go b/dependencies/pkg/mod/golang.org/x/sys@v0.1.0/unix/syscall_zos_test.go
new file mode 100644
index 0000000..42ae5ba
--- /dev/null
+++ b/dependencies/pkg/mod/golang.org/x/sys@v0.1.0/unix/syscall_zos_test.go
@@ -0,0 +1,863 @@
+// 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"
+ "unsafe"
+
+ "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$" and an environment variable used to signal
+// that the test should become the child process instead.
+func TestPassFD(t *testing.T) {
+ if runtime.GOOS == "darwin" && runtime.GOARCH == "arm64" {
+ t.Skip("cannot exec subprocess on iOS, skipping test")
+ }
+
+ if os.Getenv("GO_WANT_HELPER_PROCESS") == "1" {
+ passFDChild()
+ return
+ }
+
+ if runtime.GOOS == "aix" {
+ // Unix network isn't properly working on AIX
+ // 7.2 with Technical Level < 2
+ out, err := exec.Command("oslevel", "-s").Output()
+ if err != nil {
+ t.Skipf("skipping on AIX because oslevel -s failed: %v", err)
+ }
+
+ if len(out) < len("7200-XX-ZZ-YYMM") { // AIX 7.2, Tech Level XX, Service Pack ZZ, date YYMM
+ t.Skip("skipping on AIX because oslevel -s hasn't the right length")
+ }
+ aixVer := string(out[:4])
+ tl, err := strconv.Atoi(string(out[5:7]))
+ if err != nil {
+ t.Skipf("skipping on AIX because oslevel -s output cannot be parsed: %v", err)
+ }
+ if aixVer < "7200" || (aixVer == "7200" && tl < 2) {
+ t.Skip("skipped on AIX versions previous to 7.2 TL 2")
+ }
+ }
+
+ tempDir, err := ioutil.TempDir("", "TestPassFD")
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer os.RemoveAll(tempDir)
+
+ fds, err := unix.Socketpair(unix.AF_LOCAL, unix.SOCK_STREAM, 0)
+ if err != nil {
+ t.Fatalf("Socketpair: %v", err)
+ }
+ writeFile := os.NewFile(uintptr(fds[0]), "child-writes")
+ readFile := os.NewFile(uintptr(fds[1]), "parent-reads")
+ defer writeFile.Close()
+ defer readFile.Close()
+
+ cmd := exec.Command(os.Args[0], "-test.run=^TestPassFD$", "--", 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 "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)
+ }
+}
+
+func TestMountUnmount(t *testing.T) {
+ // use an available fs
+ var buffer struct {
+ header unix.W_Mnth
+ fsinfo [64]unix.W_Mntent
+ }
+ fsCount, 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 fsCount == 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 < fsCount; i++ {
+ err = unix.Unmount(unix.ByteSliceToString(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 = unix.ByteSliceToString(buffer.fsinfo[i].Fsname[:])
+ fstype = unix.ByteSliceToString(buffer.fsinfo[i].Fstname[:])
+ mountpoint = unix.ByteSliceToString(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{}
+ fsCount, 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 < fsCount; i++ {
+ if unix.ByteSliceToString(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{}
+ fsCount, 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())
+ }
+ fsMounted := false
+ for i := 0; i < fsCount; i++ {
+ if unix.ByteSliceToString(buffer.fsinfo[i].Fsname[:]) == fs &&
+ unix.ByteSliceToString(buffer.fsinfo[i].Mountpoint[:]) == mountpoint {
+ fsMounted = true
+ }
+ }
+ if !fsMounted {
+ t.Fatalf("%s not mounted after Mount()", fs)
+ }
+}
+
+func TestChroot(t *testing.T) {
+ // create temp dir and tempfile 1
+ tempDir, err := ioutil.TempDir("", "TestChroot")
+ if err != nil {
+ t.Fatalf("TempDir: %s", err.Error())
+ }
+ defer os.RemoveAll(tempDir)
+ f, err := ioutil.TempFile(tempDir, "chroot_test_file")
+ if err != nil {
+ t.Fatalf("TempFile: %s", err.Error())
+ }
+ // 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 := ioutil.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 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 temp dir and tempfile 1
+ tempDir, err := ioutil.TempDir("", "TestFlock")
+ if err != nil {
+ t.Fatalf("TempDir: %s", err.Error())
+ }
+ defer os.RemoveAll(tempDir)
+ f, err := ioutil.TempFile(tempDir, "flock_test_file")
+ if err != nil {
+ t.Fatalf("TempFile: %s", err.Error())
+ }
+ 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=TestFlock", 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
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-03 07:36:36 +0000