github.com/opensuse/umoci@v0.4.2/pkg/system/mknod_linux.go (about)

     1  /*
     2   * umoci: Umoci Modifies Open Containers' Images
     3   * Copyright (C) 2016, 2017, 2018 SUSE LLC.
     4   *
     5   * Licensed under the Apache License, Version 2.0 (the "License");
     6   * you may not use this file except in compliance with the License.
     7   * You may obtain a copy of the License at
     8   *
     9   *    http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   */
    17  
    18  package system
    19  
    20  import (
    21  	"archive/tar"
    22  
    23  	"golang.org/x/sys/unix"
    24  )
    25  
    26  // Tarmode takes a Typeflag (from a tar.Header for example) and returns the
    27  // corresponding os.Filemode bit. Unknown typeflags are treated like regular
    28  // files.
    29  func Tarmode(typeflag byte) uint32 {
    30  	switch typeflag {
    31  	case tar.TypeSymlink:
    32  		return unix.S_IFLNK
    33  	case tar.TypeChar:
    34  		return unix.S_IFCHR
    35  	case tar.TypeBlock:
    36  		return unix.S_IFBLK
    37  	case tar.TypeFifo:
    38  		return unix.S_IFIFO
    39  	case tar.TypeDir:
    40  		return unix.S_IFDIR
    41  	}
    42  	return 0
    43  }