115 lines
3.0 KiB
C
115 lines
3.0 KiB
C
/* $NetBSD: dev_net.c,v 1.3 2014/08/05 17:55:20 joerg Exp $ */
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/*-
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* Copyright (c) 2007 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Tohru Nishimura.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <lib/libsa/stand.h>
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#include <lib/libsa/net.h>
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#include <lib/libsa/bootp.h>
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#include <lib/libsa/nfs.h>
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#include <lib/libkern/libkern.h>
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#include <machine/bootinfo.h>
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#include "globals.h"
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static int netdev_sock = -1;
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static int netdev_opens;
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int
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net_open(struct open_file *f, ...)
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{
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va_list ap;
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char *file, *proto;
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int error;
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extern struct btinfo_bootpath bi_path;
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va_start(ap, f);
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file = va_arg(ap, char *);
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proto = va_arg(ap, char *);
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va_end(ap);
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if (netdev_opens > 0)
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return 0;
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if ((netdev_sock = netif_open(NULL)) < 0)
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return ENXIO; /* never fails indeed */
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error = 0;
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bootp(netdev_sock); /* send DHCP request */
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if (myip.s_addr == 0) {
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error = ENOENT; /* IP address was not found */
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goto bad;
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}
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if (file[0] != '\0')
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snprintf(bootfile, sizeof(bootfile), "%s", file);
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else if (bootfile[0] == '\0')
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snprintf(bootfile, sizeof(bootfile), "netbsd");
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if (strcmp(proto, "nfs") == 0
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&& (error = nfs_mount(netdev_sock, rootip, rootpath)) != 0)
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goto bad;
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snprintf(bi_path.bootpath, sizeof(bi_path.bootpath), "%s", bootfile);
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f->f_devdata = &netdev_sock;
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netdev_opens++;
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return 0;
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bad:
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netif_close(netdev_sock);
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netdev_sock = -1;
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return error;
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}
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int
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net_close(struct open_file *f)
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{
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f->f_devdata = NULL;
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if (--netdev_opens > 0)
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return 0;
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netif_close(netdev_sock);
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netdev_sock = -1;
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return 0;
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}
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int
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net_strategy(void *devdata, int rw, daddr_t dblk, size_t size,
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void *p, size_t *rsize)
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{
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return EIO;
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}
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