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cpio.c 1.1KB

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  1. /*
  2. * Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>.
  3. *
  4. * This program is free software; you can redistribute it and/or
  5. * modify it under the terms of the GNU General Public License as
  6. * published by the Free Software Foundation; either version 2 of the
  7. * License, or any later version.
  8. *
  9. * This program is distributed in the hope that it will be useful, but
  10. * WITHOUT ANY WARRANTY; without even the implied warranty of
  11. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  12. * General Public License for more details.
  13. *
  14. * You should have received a copy of the GNU General Public License
  15. * along with this program; if not, write to the Free Software
  16. * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17. */
  18. FILE_LICENCE ( GPL2_OR_LATER );
  19. /** @file
  20. *
  21. * CPIO archives
  22. *
  23. */
  24. #include <stdio.h>
  25. #include <string.h>
  26. #include <ipxe/cpio.h>
  27. /**
  28. * Set field within a CPIO header
  29. *
  30. * @v field Field within CPIO header
  31. * @v value Value to set
  32. */
  33. void cpio_set_field ( char *field, unsigned long value ) {
  34. char buf[9];
  35. snprintf ( buf, sizeof ( buf ), "%08lx", value );
  36. memcpy ( field, buf, 8 );
  37. }