github.com/minio/mc@v0.0.0-20240503112107-b471de8d1882/cmd/client-fs_darwin.go (about)

     1  //go:build darwin
     2  // +build darwin
     3  
     4  // Copyright (c) 2015-2021 MinIO, Inc.
     5  //
     6  // This file is part of MinIO Object Storage stack
     7  //
     8  // This program is free software: you can redistribute it and/or modify
     9  // it under the terms of the GNU Affero General Public License as published by
    10  // the Free Software Foundation, either version 3 of the License, or
    11  // (at your option) any later version.
    12  //
    13  // This program is distributed in the hope that it will be useful
    14  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    15  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    16  // GNU Affero General Public License for more details.
    17  //
    18  // You should have received a copy of the GNU Affero General Public License
    19  // along with this program.  If not, see <http://www.gnu.org/licenses/>.
    20  
    21  package cmd
    22  
    23  import (
    24  	"github.com/pkg/xattr"
    25  	"github.com/rjeczalik/notify"
    26  )
    27  
    28  var (
    29  	// EventTypePut contains the notify events that will cause a put (writer)
    30  	EventTypePut = []notify.Event{notify.Create, notify.Write, notify.Rename}
    31  	// EventTypeDelete contains the notify events that will cause a delete (remove)
    32  	EventTypeDelete = []notify.Event{notify.Remove}
    33  	// EventTypeGet contains the notify events that will cause a get (read)
    34  	EventTypeGet = []notify.Event{} // On macOS, FreeBSD, Solaris this is not available.
    35  )
    36  
    37  // IsGetEvent checks if the event return is a get event.
    38  func IsGetEvent(_ notify.Event) bool {
    39  	return false
    40  }
    41  
    42  // IsPutEvent checks if the event returned is a put event
    43  func IsPutEvent(event notify.Event) bool {
    44  	for _, ev := range EventTypePut {
    45  		if event&ev != 0 {
    46  			return true
    47  		}
    48  	}
    49  	return false
    50  }
    51  
    52  // IsDeleteEvent checks if the event returned is a delete event
    53  func IsDeleteEvent(event notify.Event) bool {
    54  	return event&notify.Remove != 0
    55  }
    56  
    57  // getXAttr fetches the extended attribute for a particular key on
    58  // file
    59  func getXAttr(path, key string) (string, error) {
    60  	data, e := xattr.Get(path, key)
    61  	if e != nil {
    62  		return "", e
    63  	}
    64  	return string(data), nil
    65  }
    66  
    67  // getAllXattrs returns the extended attributes for a file if supported
    68  // by the OS
    69  func getAllXattrs(path string) (map[string]string, error) {
    70  	xMetadata := make(map[string]string)
    71  	list, e := xattr.List(path)
    72  	if e != nil {
    73  		if isNotSupported(e) {
    74  			return nil, nil
    75  		}
    76  		return nil, e
    77  	}
    78  	for _, key := range list {
    79  		xMetadata[key], e = getXAttr(path, key)
    80  		if e != nil {
    81  			if isNotSupported(e) {
    82  				return nil, nil
    83  			}
    84  			return nil, e
    85  		}
    86  
    87  	}
    88  	return xMetadata, nil
    89  }