wimboot/wimboot-2.7.3/src/cpio.h

   1 #ifndef _CPIO_H
   2 #define _CPIO_H
   3
   4 /*
   5  * Copyright (C) 2012 Michael Brown <mbrown@fensystems.co.uk>.
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License as
   9  * published by the Free Software Foundation; either version 2 of the
  10  * License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  20  * 02110-1301, USA.
  21  */
  22
  23 /**
  24  * @file
  25  *
  26  * CPIO archives
  27  *
  28  */
  29
  30 #include <stdint.h>
  31
  32 /** A CPIO archive header
  33  *
  34  * All field are hexadecimal ASCII numbers padded with '0' on the
  35  * left to the full width of the field.
  36  */
  37 struct cpio_header {
  38         /** The string "070701" or "070702" */
  39         char c_magic[6];
  40         /** File inode number */
  41         char c_ino[8];
  42         /** File mode and permissions */
  43         char c_mode[8];
  44         /** File uid */
  45         char c_uid[8];
  46         /** File gid */
  47         char c_gid[8];
  48         /** Number of links */
  49         char c_nlink[8];
  50         /** Modification time */
  51         char c_mtime[8];
  52         /** Size of data field */
  53         char c_filesize[8];
  54         /** Major part of file device number */
  55         char c_maj[8];
  56         /** Minor part of file device number */
  57         char c_min[8];
  58         /** Major part of device node reference */
  59         char c_rmaj[8];
  60         /** Minor part of device node reference */
  61         char c_rmin[8];
  62         /** Length of filename, including final NUL */
  63         char c_namesize[8];
  64         /** Checksum of data field if c_magic is 070702, othersize zero */
  65         char c_chksum[8];
  66 } __attribute__ (( packed ));
  67
  68 /** CPIO magic */
  69 #define CPIO_MAGIC "070701"
  70
  71 /** CPIO trailer */
  72 #define CPIO_TRAILER "TRAILER!!!"
  73
  74 extern int cpio_extract ( void *data, size_t len,
  75                           int ( * file ) ( const char *name, void *data,
  76                                            size_t len ) );
  77
  78 #endif /* _CPIO_H */