Annotation of sys/arch/sparc/stand/common/net.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: net.c,v 1.2 2003/08/14 17:13:57 deraadt Exp $ */
! 2: /* $NetBSD: net.c,v 1.2 1997/07/22 17:41:07 drochner Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1995 Gordon W. Ross
! 6: * All rights reserved.
! 7: *
! 8: * Redistribution and use in source and binary forms, with or without
! 9: * modification, are permitted provided that the following conditions
! 10: * are met:
! 11: * 1. Redistributions of source code must retain the above copyright
! 12: * notice, this list of conditions and the following disclaimer.
! 13: * 2. Redistributions in binary form must reproduce the above copyright
! 14: * notice, this list of conditions and the following disclaimer in the
! 15: * documentation and/or other materials provided with the distribution.
! 16: * 3. The name of the author may not be used to endorse or promote products
! 17: * derived from this software without specific prior written permission.
! 18: * 4. All advertising materials mentioning features or use of this software
! 19: * must display the following acknowledgement:
! 20: * This product includes software developed by Gordon W. Ross
! 21: *
! 22: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 23: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 24: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 25: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
! 26: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
! 27: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
! 28: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
! 29: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
! 30: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
! 31: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 32: */
! 33:
! 34: /*
! 35: * This module implements a "raw device" interface suitable for
! 36: * use by the stand-alone I/O library NFS code. This interface
! 37: * does not support any "block" access, and exists only for the
! 38: * purpose of initializing the network interface, getting boot
! 39: * parameters, and performing the NFS mount.
! 40: *
! 41: * At open time, this does:
! 42: *
! 43: * find interface - netif_open()
! 44: * RARP for IP address - rarp_getipaddress()
! 45: * RPC/bootparams - callrpc(d, RPC_BOOTPARAMS, ...)
! 46: * RPC/mountd - nfs_mount(sock, ip, path)
! 47: *
! 48: * the root file handle from mountd is saved in a global
! 49: * for use by the NFS open code (NFS/lookup).
! 50: */
! 51:
! 52: #include <sys/param.h>
! 53: #include <sys/socket.h>
! 54: #include <net/if.h>
! 55: #include <netinet/in.h>
! 56: #include <netinet/in_systm.h>
! 57:
! 58: #include <lib/libsa/stand.h>
! 59: #include <lib/libsa/net.h>
! 60: #include <lib/libsa/netif.h>
! 61: #include <lib/libsa/bootparam.h>
! 62:
! 63: #include "promdev.h"
! 64:
! 65: char rootpath[FNAME_SIZE];
! 66:
! 67: int netdev_sock = -1;
! 68: static int open_count;
! 69:
! 70: /*
! 71: * Called by devopen after it sets f->f_dev to our devsw entry.
! 72: * This opens the low-level device and sets f->f_devdata.
! 73: */
! 74: int
! 75: net_open(struct promdata *pd)
! 76: {
! 77: int error = 0;
! 78:
! 79: /* On first open, do netif open, mount, etc. */
! 80: if (open_count == 0) {
! 81: /* Find network interface. */
! 82: if ((netdev_sock = netif_open(pd)) < 0) {
! 83: error = errno;
! 84: goto bad;
! 85: }
! 86: if ((error = net_mountroot()) != 0)
! 87: goto bad;
! 88: }
! 89: open_count++;
! 90: bad:
! 91: return (error);
! 92: }
! 93:
! 94: int
! 95: net_close(struct promdata *pd)
! 96: {
! 97: /* On last close, do netif close, etc. */
! 98: if (open_count > 0)
! 99: if (--open_count == 0)
! 100: netif_close(netdev_sock);
! 101: }
! 102:
! 103: int
! 104: net_mountroot(void)
! 105: {
! 106:
! 107: #ifdef DEBUG
! 108: printf("net_mountroot\n");
! 109: #endif
! 110:
! 111: /*
! 112: * Get info for NFS boot: our IP address, our hostname,
! 113: * server IP address, and our root path on the server.
! 114: * There are two ways to do this: The old, Sun way,
! 115: * and the more modern, BOOTP way. (RFC951, RFC1048)
! 116: */
! 117:
! 118: #ifdef SUN_BOOTPARAMS
! 119: /* Get boot info using RARP and Sun bootparams. */
! 120:
! 121: /* Get our IP address. (rarp.c) */
! 122: if (rarp_getipaddress(netdev_sock) == -1)
! 123: return errno;
! 124:
! 125: printf("boot: client IP address: %s\n", inet_ntoa(myip));
! 126:
! 127: /* Get our hostname, server IP address. */
! 128: if (bp_whoami(netdev_sock))
! 129: return (errno);
! 130:
! 131: printf("boot: client name: %s\n", hostname);
! 132:
! 133: /* Get the root pathname. */
! 134: if (bp_getfile(netdev_sock, "root", &rootip, rootpath))
! 135: return (errno);
! 136:
! 137: #else
! 138:
! 139: /* Get boot info using BOOTP way. (RFC951, RFC1048) */
! 140: bootp(netdev_sock);
! 141:
! 142: printf("Using IP address: %s\n", inet_ntoa(myip));
! 143:
! 144: printf("myip: %s (%s)", hostname, inet_ntoa(myip));
! 145: if (gateip)
! 146: printf(", gateip: %s", inet_ntoa(gateip));
! 147: if (netmask)
! 148: printf(", netmask: %s", intoa(netmask));
! 149: printf("\n");
! 150:
! 151: #endif
! 152:
! 153: printf("root addr=%s path=%s\n", inet_ntoa(rootip), rootpath);
! 154:
! 155: /* Get the NFS file handle (mount). */
! 156: if (nfs_mount(netdev_sock, rootip, rootpath) != 0)
! 157: return (errno);
! 158: return 0;
! 159: }
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