mirror of
https://github.com/octoleo/syncthing.git
synced 2024-11-17 18:45:13 +00:00
44 lines
1.0 KiB
Go
44 lines
1.0 KiB
Go
|
// Copyright (C) 2022 The Syncthing Authors.
|
||
|
|
//
|
||
|
|
// This Source Code Form is subject to the terms of the Mozilla Public
|
||
|
|
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
|
||
|
|
// You can obtain one at https://mozilla.org/MPL/2.0/.
|
||
|
|
|
||
|
|
//go:build linux || darwin
|
||
|
|
// +build linux darwin
|
||
|
|
|
||
|
|
package fs
|
||
|
|
|
||
|
|
import (
|
||
|
|
"errors"
|
||
|
|
"fmt"
|
||
|
|
"sort"
|
||
|
|
"strings"
|
||
|
|
|
||
|
|
"golang.org/x/sys/unix"
|
||
|
|
)
|
||
|
|
|
||
|
|
func listXattr(path string) ([]string, error) {
|
||
|
|
buf := make([]byte, 1024)
|
||
|
|
size, err := unix.Llistxattr(path, buf)
|
||
|
|
if errors.Is(err, unix.ERANGE) {
|
||
|
|
// Buffer is too small. Try again with a zero sized buffer to get
|
||
|
|
// the size, then allocate a buffer of the correct size.
|
||
|
|
size, err = unix.Llistxattr(path, nil)
|
||
|
|
if err != nil {
|
||
|
|
return nil, fmt.Errorf("Listxattr %s: %w", path, err)
|
||
|
|
}
|
||
|
|
buf = make([]byte, size)
|
||
|
|
size, err = unix.Llistxattr(path, buf)
|
||
|
|
}
|
||
|
|
if err != nil {
|
||
|
|
return nil, fmt.Errorf("Listxattr %s: %w", path, err)
|
||
|
|
}
|
||
|
|
|
||
|
|
buf = buf[:size]
|
||
|
|
attrs := compact(strings.Split(string(buf), "\x00"))
|
||
|
|
|
||
|
|
sort.Strings(attrs)
|
||
|
|
return attrs, nil
|
||
|
|
}
|