1 /* Extended cpio format from POSIX.1. 2 This file is part of the GNU C Library. 3 Copyright (C) 1992-2021 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 */ 74