120 lines
2.7 KiB
Go
120 lines
2.7 KiB
Go
// Copyright 2018 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build darwin freebsd linux
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package unix_test
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import (
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"os"
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"runtime"
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"strings"
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"testing"
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"golang.org/x/sys/unix"
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)
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func TestXattr(t *testing.T) {
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defer chtmpdir(t)()
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f := "xattr1"
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touch(t, f)
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xattrName := "user.test"
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xattrDataSet := "gopher"
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err := unix.Setxattr(f, xattrName, []byte(xattrDataSet), 0)
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if err == unix.ENOTSUP || err == unix.EOPNOTSUPP {
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t.Skip("filesystem does not support extended attributes, skipping test")
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} else if err != nil {
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t.Fatalf("Setxattr: %v", err)
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}
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// find size
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size, err := unix.Listxattr(f, nil)
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if err != nil {
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t.Fatalf("Listxattr: %v", err)
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}
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if size <= 0 {
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t.Fatalf("Listxattr returned an empty list of attributes")
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}
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buf := make([]byte, size)
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read, err := unix.Listxattr(f, buf)
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if err != nil {
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t.Fatalf("Listxattr: %v", err)
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}
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xattrs := stringsFromByteSlice(buf[:read])
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xattrWant := xattrName
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if runtime.GOOS == "freebsd" {
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// On FreeBSD, the namespace is stored separately from the xattr
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// name and Listxattr doesn't return the namespace prefix.
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xattrWant = strings.TrimPrefix(xattrWant, "user.")
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}
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found := false
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for _, name := range xattrs {
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if name == xattrWant {
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found = true
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}
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}
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if !found {
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t.Errorf("Listxattr did not return previously set attribute '%s'", xattrName)
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}
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// find size
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size, err = unix.Getxattr(f, xattrName, nil)
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if err != nil {
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t.Fatalf("Getxattr: %v", err)
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}
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if size <= 0 {
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t.Fatalf("Getxattr returned an empty attribute")
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}
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xattrDataGet := make([]byte, size)
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_, err = unix.Getxattr(f, xattrName, xattrDataGet)
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if err != nil {
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t.Fatalf("Getxattr: %v", err)
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}
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got := string(xattrDataGet)
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if got != xattrDataSet {
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t.Errorf("Getxattr: expected attribute value %s, got %s", xattrDataSet, got)
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}
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err = unix.Removexattr(f, xattrName)
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if err != nil {
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t.Fatalf("Removexattr: %v", err)
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}
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n := "nonexistent"
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err = unix.Lsetxattr(n, xattrName, []byte(xattrDataSet), 0)
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if err != unix.ENOENT {
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t.Errorf("Lsetxattr: expected %v on non-existent file, got %v", unix.ENOENT, err)
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}
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_, err = unix.Lgetxattr(n, xattrName, nil)
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if err != unix.ENOENT {
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t.Errorf("Lgetxattr: %v", err)
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}
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s := "symlink1"
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err = os.Symlink(n, s)
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if err != nil {
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t.Fatal(err)
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}
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err = unix.Lsetxattr(s, xattrName, []byte(xattrDataSet), 0)
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if err != nil {
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// Linux and Android doen't support xattrs on symlinks according
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// to xattr(7), so just test that we get the proper error.
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if (runtime.GOOS != "linux" && runtime.GOOS != "android") || err != unix.EPERM {
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t.Fatalf("Lsetxattr: %v", err)
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}
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}
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}
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