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restic/vendor/github.com/pkg/xattr/xattr_darwin.go
2017-07-23 14:25:38 +02:00

65 lines
1.6 KiB
Go

// +build darwin
package xattr
// Get retrieves extended attribute data associated with path.
func Get(path, name string) ([]byte, error) {
// find size.
size, err := getxattr(path, name, nil, 0, 0, 0)
if err != nil {
return nil, &Error{"xattr.Get", path, name, err}
}
if size > 0 {
buf := make([]byte, size)
// Read into buffer of that size.
read, err := getxattr(path, name, &buf[0], size, 0, 0)
if err != nil {
return nil, &Error{"xattr.Get", path, name, err}
}
return buf[:read], nil
}
return []byte{}, nil
}
// List retrieves a list of names of extended attributes associated
// with the given path in the file system.
func List(path string) ([]string, error) {
// find size.
size, err := listxattr(path, nil, 0, 0)
if err != nil {
return nil, &Error{"xattr.List", path, "", err}
}
if size > 0 {
buf := make([]byte, size)
// Read into buffer of that size.
read, err := listxattr(path, &buf[0], size, 0)
if err != nil {
return nil, &Error{"xattr.List", path, "", err}
}
return nullTermToStrings(buf[:read]), nil
}
return []string{}, nil
}
// Set associates name and data together as an attribute of path.
func Set(path, name string, data []byte) error {
var dataval *byte = nil
datalen := len(data)
if datalen > 0 {
dataval = &data[0]
}
if err := setxattr(path, name, dataval, datalen, 0, 0); err != nil {
return &Error{"xattr.Set", path, name, err}
}
return nil
}
// Remove removes the attribute associated with the given path.
func Remove(path, name string) error {
if err := removexattr(path, name, 0); err != nil {
return &Error{"xattr.Remove", path, name, err}
}
return nil
}