1*b18df0cfSjakllsch /* $NetBSD: devopen.c,v 1.3 2014/01/05 21:09:33 jakllsch Exp $ */
203058dddSnisimura
303058dddSnisimura /*-
403058dddSnisimura * Copyright (c) 2007 The NetBSD Foundation, Inc.
503058dddSnisimura * All rights reserved.
603058dddSnisimura *
703058dddSnisimura * This code is derived from software contributed to The NetBSD Foundation
803058dddSnisimura * by Tohru Nishimura.
903058dddSnisimura *
1003058dddSnisimura * Redistribution and use in source and binary forms, with or without
1103058dddSnisimura * modification, are permitted provided that the following conditions
1203058dddSnisimura * are met:
1303058dddSnisimura * 1. Redistributions of source code must retain the above copyright
1403058dddSnisimura * notice, this list of conditions and the following disclaimer.
1503058dddSnisimura * 2. Redistributions in binary form must reproduce the above copyright
1603058dddSnisimura * notice, this list of conditions and the following disclaimer in the
1703058dddSnisimura * documentation and/or other materials provided with the distribution.
1803058dddSnisimura *
1903058dddSnisimura * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
2003058dddSnisimura * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
2103058dddSnisimura * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
2203058dddSnisimura * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
2303058dddSnisimura * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
2403058dddSnisimura * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
2503058dddSnisimura * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
2603058dddSnisimura * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
2703058dddSnisimura * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
2803058dddSnisimura * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
2903058dddSnisimura * POSSIBILITY OF SUCH DAMAGE.
3003058dddSnisimura */
3103058dddSnisimura
3203058dddSnisimura #include <sys/param.h>
3303058dddSnisimura
3403058dddSnisimura #include <netinet/in.h>
3503058dddSnisimura
3603058dddSnisimura #include <lib/libsa/stand.h>
3703058dddSnisimura #include <lib/libsa/nfs.h>
3803058dddSnisimura #include <lib/libsa/ufs.h>
3903058dddSnisimura #include <lib/libsa/tftp.h>
4003058dddSnisimura #include <lib/libkern/libkern.h>
4103058dddSnisimura
4203058dddSnisimura #include "globals.h"
436ecb01edSphx #include "memfs.h"
4403058dddSnisimura
4503058dddSnisimura struct devsw devnet = { "net", net_strategy, net_open, net_close, noioctl };
4603058dddSnisimura struct devsw devdsk = { "dsk", dsk_strategy, dsk_open, dsk_close, noioctl };
4703058dddSnisimura
4803058dddSnisimura struct fs_ops file_system[1] = { FS_OPS(null) };
4903058dddSnisimura int nfsys = 1;
5003058dddSnisimura struct fs_ops fs_nfs = FS_OPS(nfs);
5103058dddSnisimura struct fs_ops fs_tftp = FS_OPS(tftp);
5203058dddSnisimura struct fs_ops fs_ffsv2 = FS_OPS(ffsv2);
5303058dddSnisimura struct fs_ops fs_ffsv1 = FS_OPS(ffsv1);
546ecb01edSphx struct fs_ops fs_mem = FS_OPS(mem);
5503058dddSnisimura
5603058dddSnisimura static void parseunit(const char *, int *, int *, char **);
5703058dddSnisimura
5803058dddSnisimura int
devopen(struct open_file * of,const char * name,char ** file)5903058dddSnisimura devopen(struct open_file *of, const char *name, char **file)
6003058dddSnisimura {
6103058dddSnisimura int error;
6203058dddSnisimura int unit, part;
6303058dddSnisimura extern char bootfile[]; /* handed by DHCP */
6403058dddSnisimura
6503058dddSnisimura if (of->f_flags != F_READ)
6603058dddSnisimura return EPERM;
6703058dddSnisimura
686ecb01edSphx if (strncmp("mem:", name, 4) == 0) {
696ecb01edSphx of->f_dev = NULL;
706ecb01edSphx of->f_flags |= F_NODEV;
716ecb01edSphx file_system[0] = fs_mem;
726ecb01edSphx *file = (char *)&name[4];
736ecb01edSphx return 0; /* MEM */
746ecb01edSphx }
7503058dddSnisimura if (strncmp("net:", name, 4) == 0 || strncmp("nfs:", name, 4) == 0) {
7603058dddSnisimura of->f_dev = &devnet;
7703058dddSnisimura if ((error = net_open(of, &name[4], "nfs")) != 0)
7803058dddSnisimura return error;
7903058dddSnisimura file_system[0] = fs_nfs;
8003058dddSnisimura *file = bootfile; /* resolved fname */
8103058dddSnisimura return 0; /* NFS */
8203058dddSnisimura }
8303058dddSnisimura if (strncmp("tftp:", name, 5) == 0) {
8403058dddSnisimura of->f_dev = &devnet;
8503058dddSnisimura if ((error = net_open(of, &name[5], "tftp")) != 0)
8603058dddSnisimura return error;
8703058dddSnisimura file_system[0] = fs_tftp;
8803058dddSnisimura *file = bootfile; /* resolved fname */
8903058dddSnisimura return 0; /* TFTP */
9003058dddSnisimura }
9103058dddSnisimura if (name[0] == 'w' && name[1] == 'd') {
9203058dddSnisimura parseunit(&name[2], &unit, &part, file);
9303058dddSnisimura of->f_dev = &devdsk;
9403058dddSnisimura if (*file == NULL || **file <= ' ')
9503058dddSnisimura *file = "netbsd";
9603058dddSnisimura if ((error = dsk_open(of, unit, part, *file)) != 0)
9703058dddSnisimura return error;
9803058dddSnisimura file_system[0] = *dsk_fsops(of);
9903058dddSnisimura return 0; /* FFS */
10003058dddSnisimura }
10103058dddSnisimura return ENOENT;
10203058dddSnisimura }
10303058dddSnisimura
10403058dddSnisimura static void
parseunit(const char * name,int * unitp,int * partp,char ** pathp)10503058dddSnisimura parseunit(const char *name, int *unitp, int *partp, char **pathp)
10603058dddSnisimura {
10703058dddSnisimura const char *p = name;
10803058dddSnisimura int unit, part;
10903058dddSnisimura
11003058dddSnisimura unit = part = -1;
11103058dddSnisimura while (*p != ':' && *p != '\0') {
11203058dddSnisimura if (unit == -1 && *p >= '0' && *p <= '9')
11303058dddSnisimura unit = *p - '0';
11403058dddSnisimura if (part == -1 && *p >= 'a' && *p < 'a' + 16)
11503058dddSnisimura part = *p - 'a';
11603058dddSnisimura p += 1;
11703058dddSnisimura }
11803058dddSnisimura *unitp = (unit == -1) ? 0 : unit;
11903058dddSnisimura *partp = (part == -1) ? 0 : part;
12003058dddSnisimura *pathp = (*p == ':') ? (char *)p + 1 : NULL;
12103058dddSnisimura }
12203058dddSnisimura
12303058dddSnisimura /* ARGSUSED */
12403058dddSnisimura int
noioctl(struct open_file * f,u_long cmd,void * data)12503058dddSnisimura noioctl(struct open_file *f, u_long cmd, void *data)
12603058dddSnisimura {
12703058dddSnisimura
12803058dddSnisimura return EINVAL;
12903058dddSnisimura }
130