src/include/gpxe/cpio.h

   1 #ifndef _GPXE_CPIO_H
   2 #define _GPXE_CPIO_H
   3
   4 /** @file
   5  *
   6  * CPIO archives
   7  *
   8  */
   9
  10 /** A CPIO archive header
  11  *
  12  * All field are hexadecimal ASCII numbers padded with '0' on the
  13  * left to the full width of the field.
  14  */
  15 struct cpio_header {
  16         /** The string "070701" or "070702" */
  17         char c_magic[6];
  18         /** File inode number */
  19         char c_ino[8];
  20         /** File mode and permissions */
  21         char c_mode[8];
  22         /** File uid */
  23         char c_uid[8];
  24         /** File gid */
  25         char c_gid[8];
  26         /** Number of links */
  27         char c_nlink[8];
  28         /** Modification time */
  29         char c_mtime[8];
  30         /** Size of data field */
  31         char c_filesize[8];
  32         /** Major part of file device number */
  33         char c_maj[8];
  34         /** Minor part of file device number */
  35         char c_min[8];
  36         /** Major part of device node reference */
  37         char c_rmaj[8];
  38         /** Minor part of device node reference */
  39         char c_rmin[8];
  40         /** Length of filename, including final NUL */
  41         char c_namesize[8];
  42         /** Checksum of data field if c_magic is 070702, othersize zero */
  43         char c_chksum[8];
  44 } __attribute__ (( packed ));
  45
  46 /** CPIO magic */
  47 #define CPIO_MAGIC "070701"
  48
  49 extern void cpio_set_field ( char *field, unsigned long value );
  50
  51 #endif /* _GPXE_CPIO_H */