iPXE
cwuri.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., 51 Franklin Street, Fifth Floor, Boston, MA
00017  * 02110-1301, USA.
00018  *
00019  * You can also choose to distribute this program under the terms of
00020  * the Unmodified Binary Distribution Licence (as given in the file
00021  * COPYING.UBDL), provided that you have satisfied its requirements.
00022  */
00023 
00024 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
00025 
00026 #include <stddef.h>
00027 #include <ipxe/uri.h>
00028 
00029 /** @file
00030  *
00031  * Current working URI
00032  *
00033  * Somewhat analogous to the current working directory in a POSIX
00034  * system.
00035  */
00036 
00037 /** Current working URI */
00038 struct uri *cwuri = NULL;
00039 
00040 /**
00041  * Change working URI
00042  *
00043  * @v uri               New working URI, or NULL
00044  */
00045 void churi ( struct uri *uri ) {
00046         struct uri *new_uri = NULL;
00047 
00048         if ( uri )
00049                 new_uri = resolve_uri ( cwuri, uri );
00050 
00051         uri_put ( cwuri );
00052         cwuri = new_uri;
00053 }