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// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package unix_test
import (
"bytes"
"io/ioutil"
"os"
"path"
"testing"
"golang.org/x/sys/unix"
)
var testData = []byte("This is a test\n")
// stringsFromByteSlice converts a sequence of attributes to a []string.
// On Darwin, each entry is a NULL-terminated string.
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
}
func createTestFile(t *testing.T, dir string) (f *os.File, cleanup func() error) {
file, err := ioutil.TempFile(dir, t.Name())
if err != nil {
t.Fatal(err)
}
_, err = file.Write(testData)
if err != nil {
t.Fatal(err)
}
err = file.Close()
if err != nil {
t.Fatal(err)
}
return file, func() error {
return os.Remove(file.Name())
}
}
func TestClonefile(t *testing.T) {
file, cleanup := createTestFile(t, "")
defer cleanup()
clonedName := file.Name() + "-cloned"
err := unix.Clonefile(file.Name(), clonedName, 0)
if err == unix.ENOSYS || err == unix.ENOTSUP {
t.Skip("clonefile is not available or supported, skipping test")
} else if err != nil {
t.Fatal(err)
}
defer os.Remove(clonedName)
clonedData, err := ioutil.ReadFile(clonedName)
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(testData, clonedData) {
t.Errorf("Clonefile: got %q, expected %q", clonedData, testData)
}
}
func TestClonefileatWithCwd(t *testing.T) {
file, cleanup := createTestFile(t, "")
defer cleanup()
clonedName := file.Name() + "-cloned"
err := unix.Clonefileat(unix.AT_FDCWD, file.Name(), unix.AT_FDCWD, clonedName, 0)
if err == unix.ENOSYS || err == unix.ENOTSUP {
t.Skip("clonefileat is not available or supported, skipping test")
} else if err != nil {
t.Fatal(err)
}
defer os.Remove(clonedName)
clonedData, err := ioutil.ReadFile(clonedName)
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(testData, clonedData) {
t.Errorf("Clonefileat: got %q, expected %q", clonedData, testData)
}
}
func TestClonefileatWithRelativePaths(t *testing.T) {
srcDir, err := ioutil.TempDir("", "src")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(srcDir)
dstDir, err := ioutil.TempDir("", "dest")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(dstDir)
srcFd, err := unix.Open(srcDir, unix.O_RDONLY|unix.O_DIRECTORY, 0)
if err != nil {
t.Fatal(err)
}
defer unix.Close(srcFd)
dstFd, err := unix.Open(dstDir, unix.O_RDONLY|unix.O_DIRECTORY, 0)
if err != nil {
t.Fatal(err)
}
defer unix.Close(dstFd)
srcFile, cleanup := createTestFile(t, srcDir)
defer cleanup()
dstFile, err := ioutil.TempFile(dstDir, "TestClonefileat")
if err != nil {
t.Fatal(err)
}
err = os.Remove(dstFile.Name())
if err != nil {
t.Fatal(err)
}
src := path.Base(srcFile.Name())
dst := path.Base(dstFile.Name())
err = unix.Clonefileat(srcFd, src, dstFd, dst, 0)
if err == unix.ENOSYS || err == unix.ENOTSUP {
t.Skip("clonefileat is not available or supported, skipping test")
} else if err != nil {
t.Fatal(err)
}
clonedData, err := ioutil.ReadFile(dstFile.Name())
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(testData, clonedData) {
t.Errorf("Clonefileat: got %q, expected %q", clonedData, testData)
}
}
func TestFclonefileat(t *testing.T) {
file, cleanup := createTestFile(t, "")
defer cleanup()
fd, err := unix.Open(file.Name(), unix.O_RDONLY, 0)
if err != nil {
t.Fatal(err)
}
defer unix.Close(fd)
dstFile, err := ioutil.TempFile("", "TestFclonefileat")
if err != nil {
t.Fatal(err)
}
os.Remove(dstFile.Name())
err = unix.Fclonefileat(fd, unix.AT_FDCWD, dstFile.Name(), 0)
if err == unix.ENOSYS || err == unix.ENOTSUP {
t.Skip("clonefileat is not available or supported, skipping test")
} else if err != nil {
t.Fatal(err)
}
clonedData, err := ioutil.ReadFile(dstFile.Name())
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(testData, clonedData) {
t.Errorf("Fclonefileat: got %q, expected %q", clonedData, testData)
}
}
func TestFcntlFstore(t *testing.T) {
f, err := ioutil.TempFile("", t.Name())
if err != nil {
t.Fatal(err)
}
defer os.Remove(f.Name())
defer f.Close()
fstore := &unix.Fstore_t{
Flags: unix.F_ALLOCATEALL,
Posmode: unix.F_PEOFPOSMODE,
Offset: 0,
Length: 1 << 10,
}
err = unix.FcntlFstore(f.Fd(), unix.F_PREALLOCATE, fstore)
if err == unix.EOPNOTSUPP {
t.Skipf("fcntl with F_PREALLOCATE not supported, skipping test")
} else if err != nil {
t.Fatalf("FcntlFstore: %v", err)
}
st, err := f.Stat()
if err != nil {
t.Fatal(err)
}
if st.Size() != 0 {
t.Errorf("FcntlFstore: got size = %d, want %d", st.Size(), 0)
}
}
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