mirror of
https://github.com/DNSCrypt/dnscrypt-proxy.git
synced 2024-12-12 22:36:32 +01:00
120 lines
2.7 KiB
Go
120 lines
2.7 KiB
Go
// 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.
|
|
|
|
// +build darwin freebsd linux
|
|
|
|
package unix_test
|
|
|
|
import (
|
|
"os"
|
|
"runtime"
|
|
"strings"
|
|
"testing"
|
|
|
|
"golang.org/x/sys/unix"
|
|
)
|
|
|
|
func TestXattr(t *testing.T) {
|
|
defer chtmpdir(t)()
|
|
|
|
f := "xattr1"
|
|
touch(t, f)
|
|
|
|
xattrName := "user.test"
|
|
xattrDataSet := "gopher"
|
|
err := unix.Setxattr(f, xattrName, []byte(xattrDataSet), 0)
|
|
if err == unix.ENOTSUP || err == unix.EOPNOTSUPP {
|
|
t.Skip("filesystem does not support extended attributes, skipping test")
|
|
} else if err != nil {
|
|
t.Fatalf("Setxattr: %v", err)
|
|
}
|
|
|
|
// find size
|
|
size, err := unix.Listxattr(f, nil)
|
|
if err != nil {
|
|
t.Fatalf("Listxattr: %v", err)
|
|
}
|
|
|
|
if size <= 0 {
|
|
t.Fatalf("Listxattr returned an empty list of attributes")
|
|
}
|
|
|
|
buf := make([]byte, size)
|
|
read, err := unix.Listxattr(f, buf)
|
|
if err != nil {
|
|
t.Fatalf("Listxattr: %v", err)
|
|
}
|
|
|
|
xattrs := stringsFromByteSlice(buf[:read])
|
|
|
|
xattrWant := xattrName
|
|
if runtime.GOOS == "freebsd" {
|
|
// On FreeBSD, the namespace is stored separately from the xattr
|
|
// name and Listxattr doesn't return the namespace prefix.
|
|
xattrWant = strings.TrimPrefix(xattrWant, "user.")
|
|
}
|
|
found := false
|
|
for _, name := range xattrs {
|
|
if name == xattrWant {
|
|
found = true
|
|
}
|
|
}
|
|
|
|
if !found {
|
|
t.Errorf("Listxattr did not return previously set attribute '%s'", xattrName)
|
|
}
|
|
|
|
// find size
|
|
size, err = unix.Getxattr(f, xattrName, nil)
|
|
if err != nil {
|
|
t.Fatalf("Getxattr: %v", err)
|
|
}
|
|
|
|
if size <= 0 {
|
|
t.Fatalf("Getxattr returned an empty attribute")
|
|
}
|
|
|
|
xattrDataGet := make([]byte, size)
|
|
_, err = unix.Getxattr(f, xattrName, xattrDataGet)
|
|
if err != nil {
|
|
t.Fatalf("Getxattr: %v", err)
|
|
}
|
|
|
|
got := string(xattrDataGet)
|
|
if got != xattrDataSet {
|
|
t.Errorf("Getxattr: expected attribute value %s, got %s", xattrDataSet, got)
|
|
}
|
|
|
|
err = unix.Removexattr(f, xattrName)
|
|
if err != nil {
|
|
t.Fatalf("Removexattr: %v", err)
|
|
}
|
|
|
|
n := "nonexistent"
|
|
err = unix.Lsetxattr(n, xattrName, []byte(xattrDataSet), 0)
|
|
if err != unix.ENOENT {
|
|
t.Errorf("Lsetxattr: expected %v on non-existent file, got %v", unix.ENOENT, err)
|
|
}
|
|
|
|
_, err = unix.Lgetxattr(n, xattrName, nil)
|
|
if err != unix.ENOENT {
|
|
t.Errorf("Lgetxattr: %v", err)
|
|
}
|
|
|
|
s := "symlink1"
|
|
err = os.Symlink(n, s)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
err = unix.Lsetxattr(s, xattrName, []byte(xattrDataSet), 0)
|
|
if err != nil {
|
|
// Linux and Android doen't support xattrs on symlinks according
|
|
// to xattr(7), so just test that we get the proper error.
|
|
if (runtime.GOOS != "linux" && runtime.GOOS != "android") || err != unix.EPERM {
|
|
t.Fatalf("Lsetxattr: %v", err)
|
|
}
|
|
}
|
|
}
|