53 lines
1,008 B
Go
53 lines
1,008 B
Go
// +build linux
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package xattr
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import (
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"syscall"
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"github.com/opencontainers/runc/libcontainer/system"
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)
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func XattrEnabled(path string) bool {
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if Setxattr(path, "user.test", "") == syscall.ENOTSUP {
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return false
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}
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return true
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}
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func stringsfromByte(buf []byte) (result []string) {
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offset := 0
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for index, b := range buf {
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if b == 0 {
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result = append(result, string(buf[offset:index]))
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offset = index + 1
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}
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}
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return
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}
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func Listxattr(path string) ([]string, error) {
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size, err := system.Llistxattr(path, nil)
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if err != nil {
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return nil, err
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}
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buf := make([]byte, size)
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read, err := system.Llistxattr(path, buf)
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if err != nil {
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return nil, err
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}
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names := stringsfromByte(buf[:read])
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return names, nil
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}
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func Getxattr(path, attr string) (string, error) {
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value, err := system.Lgetxattr(path, attr)
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if err != nil {
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return "", err
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}
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return string(value), nil
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}
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func Setxattr(path, xattr, value string) error {
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return system.Lsetxattr(path, xattr, []byte(value), 0)
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}
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