be3bee9396
so that it is MI. Allow nfs_mountroot to return an error if the nfs_diskless struct is not valid, rather than panicing later on. Call nfs_setup_diskless() from nfs_mountroot if NFS_ROOT is defined, like bootpc_init(). Removed legacy root mount support for sparc64, and enabled NFS_ROOT by default.
233 lines
6.7 KiB
C
233 lines
6.7 KiB
C
/*-
|
|
* Copyright (c) 1990 The Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* William Jolitz.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* from: @(#)autoconf.c 7.1 (Berkeley) 5/9/91
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/mount.h>
|
|
|
|
#include <sys/socket.h>
|
|
#include <net/if.h>
|
|
#include <net/if_dl.h>
|
|
#include <net/if_types.h>
|
|
#include <net/if_var.h>
|
|
#include <net/ethernet.h>
|
|
#include <netinet/in.h>
|
|
#include <nfs/rpcv2.h>
|
|
#include <nfs/nfsproto.h>
|
|
#include <nfsclient/nfs.h>
|
|
#include <nfsclient/nfsdiskless.h>
|
|
|
|
static int inaddr_to_sockaddr(char *ev, struct sockaddr_in *sa);
|
|
static int hwaddr_to_sockaddr(char *ev, struct sockaddr_dl *sa);
|
|
static int decode_nfshandle(char *ev, u_char *fh);
|
|
|
|
/*
|
|
* Populate the essential fields in the nfsv3_diskless structure.
|
|
*
|
|
* The loader is expected to export the following environment variables:
|
|
*
|
|
* boot.netif.ip IP address on boot interface
|
|
* boot.netif.netmask netmask on boot interface
|
|
* boot.netif.gateway default gateway (optional)
|
|
* boot.netif.hwaddr hardware address of boot interface
|
|
* boot.nfsroot.server IP address of root filesystem server
|
|
* boot.nfsroot.path path of the root filesystem on server
|
|
* boot.nfsroot.nfshandle NFS handle for root filesystem on server
|
|
*/
|
|
void
|
|
nfs_setup_diskless(void)
|
|
{
|
|
struct nfs_diskless *nd = &nfs_diskless;
|
|
struct ifnet *ifp;
|
|
struct ifaddr *ifa;
|
|
struct sockaddr_dl *sdl, ourdl;
|
|
struct sockaddr_in myaddr, netmask;
|
|
char *cp;
|
|
|
|
if (nfs_diskless_valid)
|
|
return;
|
|
/* set up interface */
|
|
if (inaddr_to_sockaddr("boot.netif.ip", &myaddr))
|
|
return;
|
|
if (inaddr_to_sockaddr("boot.netif.netmask", &netmask)) {
|
|
printf("nfs_diskless: no netmask\n");
|
|
return;
|
|
}
|
|
bcopy(&myaddr, &nd->myif.ifra_addr, sizeof(myaddr));
|
|
bcopy(&myaddr, &nd->myif.ifra_broadaddr, sizeof(myaddr));
|
|
((struct sockaddr_in *) &nd->myif.ifra_broadaddr)->sin_addr.s_addr =
|
|
myaddr.sin_addr.s_addr | ~ netmask.sin_addr.s_addr;
|
|
bcopy(&netmask, &nd->myif.ifra_mask, sizeof(netmask));
|
|
|
|
if (hwaddr_to_sockaddr("boot.netif.hwaddr", &ourdl)) {
|
|
printf("nfs_diskless: no hardware address\n");
|
|
return;
|
|
}
|
|
ifa = NULL;
|
|
TAILQ_FOREACH(ifp, &ifnet, if_link) {
|
|
TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
|
|
if ((ifa->ifa_addr->sa_family == AF_LINK) &&
|
|
(sdl = ((struct sockaddr_dl *)ifa->ifa_addr))) {
|
|
if ((sdl->sdl_type == ourdl.sdl_type) &&
|
|
(sdl->sdl_alen == ourdl.sdl_alen) &&
|
|
!bcmp(sdl->sdl_data + sdl->sdl_nlen,
|
|
ourdl.sdl_data + ourdl.sdl_nlen,
|
|
sdl->sdl_alen))
|
|
goto match_done;
|
|
}
|
|
}
|
|
}
|
|
printf("nfs_diskless: no interface\n");
|
|
return; /* no matching interface */
|
|
match_done:
|
|
sprintf(nd->myif.ifra_name, "%s%d", ifp->if_name, ifp->if_unit);
|
|
|
|
/* set up gateway */
|
|
inaddr_to_sockaddr("boot.netif.gateway", &nd->mygateway);
|
|
|
|
/* XXX set up swap? */
|
|
|
|
/* set up root mount */
|
|
nd->root_args.rsize = 8192; /* XXX tunable? */
|
|
nd->root_args.wsize = 8192;
|
|
nd->root_args.sotype = SOCK_DGRAM;
|
|
nd->root_args.flags = (NFSMNT_WSIZE | NFSMNT_RSIZE | NFSMNT_RESVPORT);
|
|
if (inaddr_to_sockaddr("boot.nfsroot.server", &nd->root_saddr)) {
|
|
printf("nfs_diskless: no server\n");
|
|
return;
|
|
}
|
|
nd->root_saddr.sin_port = htons(NFS_PORT);
|
|
if (decode_nfshandle("boot.nfsroot.nfshandle", &nd->root_fh[0]) == 0) {
|
|
printf("nfs_diskless: no NFS handle\n");
|
|
return;
|
|
}
|
|
if ((cp = getenv("boot.nfsroot.path")) != NULL) {
|
|
strncpy(nd->root_hostnam, cp, MNAMELEN - 1);
|
|
freeenv(cp);
|
|
}
|
|
|
|
nfs_diskless_valid = 1;
|
|
}
|
|
|
|
static int
|
|
inaddr_to_sockaddr(char *ev, struct sockaddr_in *sa)
|
|
{
|
|
u_int32_t a[4];
|
|
char *cp;
|
|
int count;
|
|
|
|
bzero(sa, sizeof(*sa));
|
|
sa->sin_len = sizeof(*sa);
|
|
sa->sin_family = AF_INET;
|
|
|
|
if ((cp = getenv(ev)) == NULL)
|
|
return (1);
|
|
count = sscanf(cp, "%d.%d.%d.%d", &a[0], &a[1], &a[2], &a[3]);
|
|
freeenv(cp);
|
|
if (count != 4)
|
|
return (1);
|
|
sa->sin_addr.s_addr =
|
|
htonl((a[0] << 24) | (a[1] << 16) | (a[2] << 8) | a[3]);
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
hwaddr_to_sockaddr(char *ev, struct sockaddr_dl *sa)
|
|
{
|
|
char *cp;
|
|
u_int32_t a[6];
|
|
int count;
|
|
|
|
bzero(sa, sizeof(*sa));
|
|
sa->sdl_len = sizeof(*sa);
|
|
sa->sdl_family = AF_LINK;
|
|
sa->sdl_type = IFT_ETHER;
|
|
sa->sdl_alen = ETHER_ADDR_LEN;
|
|
if ((cp = getenv(ev)) == NULL)
|
|
return (1);
|
|
count = sscanf(cp, "%x:%x:%x:%x:%x:%x",
|
|
&a[0], &a[1], &a[2], &a[3], &a[4], &a[5]);
|
|
freeenv(cp);
|
|
if (count != 6)
|
|
return (1);
|
|
sa->sdl_data[0] = a[0];
|
|
sa->sdl_data[1] = a[1];
|
|
sa->sdl_data[2] = a[2];
|
|
sa->sdl_data[3] = a[3];
|
|
sa->sdl_data[4] = a[4];
|
|
sa->sdl_data[5] = a[5];
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
decode_nfshandle(char *ev, u_char *fh)
|
|
{
|
|
u_char *cp, *ep;
|
|
int len, val;
|
|
|
|
ep = cp = getenv(ev);
|
|
if (cp == NULL)
|
|
return (0);
|
|
if ((strlen(cp) < 2) || (*cp != 'X')) {
|
|
freeenv(ep);
|
|
return (0);
|
|
}
|
|
len = 0;
|
|
cp++;
|
|
for (;;) {
|
|
if (*cp == 'X') {
|
|
freeenv(ep);
|
|
return (len);
|
|
}
|
|
if ((sscanf(cp, "%2x", &val) != 1) || (val > 0xff)) {
|
|
freeenv(ep);
|
|
return (0);
|
|
}
|
|
*(fh++) = val;
|
|
len++;
|
|
cp += 2;
|
|
if (len > NFSX_V2FH) {
|
|
freeenv(ep);
|
|
return (0);
|
|
}
|
|
}
|
|
}
|