mirror of https://github.com/vbatts/go-mtree.git
44 lines
1001 B
Go
44 lines
1001 B
Go
//go:build linux
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// +build linux
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package xattr
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import (
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"strings"
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"syscall"
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)
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// Get returns the extended attributes (xattr) on file `path`, for the given `name`.
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func Get(path, name string) ([]byte, error) {
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dest := make([]byte, 1024)
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i, err := syscall.Getxattr(path, name, dest)
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if err != nil {
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return nil, err
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}
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return dest[:i], nil
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}
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// Set sets the extended attributes (xattr) on file `path`, for the given `name` and `value`
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func Set(path, name string, value []byte) error {
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return syscall.Setxattr(path, name, value, 0)
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}
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// List returns a list of all the extended attributes (xattr) for file `path`
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func List(path string) ([]string, error) {
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dest := make([]byte, 1024)
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i, err := syscall.Listxattr(path, dest)
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if err != nil {
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return nil, err
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}
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// If the returned list is empty, return nil instead of []string{""}
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str := string(dest[:i])
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if str == "" {
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return nil, nil
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}
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return strings.Split(strings.TrimRight(str, nilByte), nilByte), nil
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}
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const nilByte = "\x00"
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