xref: /netbsd-src/sys/stand/efiboot/devopen.c (revision a158dd7e2ee0397415c5af50997db5dba105cb22)
1 /* $NetBSD: devopen.c,v 1.4 2018/11/15 23:52:33 jmcneill Exp $ */
2 
3 /*-
4  * Copyright (c) 2018 Jared McNeill <jmcneill@invisible.ca>
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  */
28 
29 #include "efiboot.h"
30 #include "efifile.h"
31 #include "efiblock.h"
32 
33 int
devopen(struct open_file * f,const char * fname,char ** file)34 devopen(struct open_file *f, const char *fname, char **file)
35 {
36 	int error;
37 
38 	error = efi_net_open(f, fname, file);
39 	if (error)
40 		file_system[0] = null_fs_ops;
41 	else if (rootpath[0] != '\0')
42 		file_system[0] = nfs_fs_ops;
43 	else
44 		file_system[0] = tftp_fs_ops;
45 
46 	if (error)
47 		error = efi_block_open(f, fname, file);
48 	if (error)
49 		error = efi_file_open(f, fname);
50 
51 	return error;
52 }
53