posix/cpio.h

   1 /* Extended cpio format from POSIX.1.
   2    This file is part of the GNU C Library.
   3    Copyright (C) 1992-2023 Free Software Foundation, Inc.
   4    NOTE: The canonical source of this file is maintained with the GNU cpio.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <https://www.gnu.org/licenses/>.  */
  19
  20 #ifndef _CPIO_H
  21 #define _CPIO_H 1
  22
  23 /* A cpio archive consists of a sequence of files.
  24    Each file has a 76 byte header,
  25    a variable length, NUL terminated filename,
  26    and variable length file data.
  27    A header for a filename "TRAILER!!!" indicates the end of the archive.  */
  28
  29 /* All the fields in the header are ISO 646 (approximately ASCII) strings
  30    of octal numbers, left padded, not NUL terminated.
  31
  32    Field Name   Length in Bytes Notes
  33    c_magic      6               must be "070707"
  34    c_dev        6
  35    c_ino        6
  36    c_mode       6               see below for value
  37    c_uid        6
  38    c_gid        6
  39    c_nlink      6
  40    c_rdev       6               only valid for chr and blk special files
  41    c_mtime      11
  42    c_namesize   6               count includes terminating NUL in pathname
  43    c_filesize   11              must be 0 for FIFOs and directories  */
  44
  45 /* Value for the field `c_magic'.  */
  46 #define MAGIC   "070707"
  47
  48 /* Values for c_mode, OR'd together: */
  49
  50 #define C_IRUSR         000400
  51 #define C_IWUSR         000200
  52 #define C_IXUSR         000100
  53 #define C_IRGRP         000040
  54 #define C_IWGRP         000020
  55 #define C_IXGRP         000010
  56 #define C_IROTH         000004
  57 #define C_IWOTH         000002
  58 #define C_IXOTH         000001
  59
  60 #define C_ISUID         004000
  61 #define C_ISGID         002000
  62 #define C_ISVTX         001000
  63
  64 #define C_ISBLK         060000
  65 #define C_ISCHR         020000
  66 #define C_ISDIR         040000
  67 #define C_ISFIFO        010000
  68 #define C_ISSOCK        0140000
  69 #define C_ISLNK         0120000
  70 #define C_ISCTG         0110000
  71 #define C_ISREG         0100000
  72
  73 #endif /* cpio.h */