cpio.c

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00001 /*
00002  * Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>.
00003  *
00004  * This program is free software; you can redistribute it and/or
00005  * modify it under the terms of the GNU General Public License as
00006  * published by the Free Software Foundation; either version 2 of the
00007  * License, or any later version.
00008  *
00009  * This program is distributed in the hope that it will be useful, but
00010  * WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012  * General Public License for more details.
00013  *
00014  * You should have received a copy of the GNU General Public License
00015  * along with this program; if not, write to the Free Software
00016  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00017  */
00018 
00019 FILE_LICENCE ( GPL2_OR_LATER );
00020 
00021 /** @file
00022  *
00023  * CPIO archives
00024  *
00025  */
00026 
00027 #include <stdio.h>
00028 #include <string.h>
00029 #include <gpxe/cpio.h>
00030 
00031 /**
00032  * Set field within a CPIO header
00033  *
00034  * @v field             Field within CPIO header
00035  * @v value             Value to set
00036  */
00037 void cpio_set_field ( char *field, unsigned long value ) {
00038         char buf[9];
00039 
00040         snprintf ( buf, sizeof ( buf ), "%08lx", value );
00041         memcpy ( field, buf, 8 );
00042 }