/* $Id$ */
/*
* Copyright (c) 1995 Gordon Ross, Adam Glass
* Copyright (c) 1992 Regents of the University of California.
* All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* 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, Lawrence Berkeley Laboratory 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.
*
* based on:
* nfs/krpc_subr.c
* $NetBSD: krpc_subr.c,v 1.10 1995/08/08 20:43:43 gwr Exp $
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/conf.h>
#include <sys/sockio.h>
#include <sys/proc.h>
#include <sys/mount.h>
#include <sys/mbuf.h>
#include <sys/reboot.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <net/if.h>
#include <net/route.h>
#include <netinet/in.h>
#include <net/if_types.h>
#include <net/if_dl.h>
#include <netinet/if_ether.h>
#include <nfs/rpcv2.h>
#include <nfs/nfsproto.h>
#include <nfs/nfs.h>
#include <nfs/nfsdiskless.h>
#include <nfs/krpc.h>
#include <nfs/xdr_subs.h>
#define BOOTP_MIN_LEN 300 /* Minimum size of bootp udp packet */
/*
* What is the longest we will wait before re-sending a request?
* Note this is also the frequency of "RPC timeout" messages.
* The re-send loop count sup linearly to this maximum, so the
* first complaint will happen after (1+2+3+4+5)=15 seconds.
*/
#define MAX_RESEND_DELAY 5 /* seconds */
/* Definitions from RFC951 */
struct bootp_packet {
u_int8_t op;
u_int8_t htype;
u_int8_t hlen;
u_int8_t hops;
u_int32_t xid;
u_int16_t secs;
u_int16_t flags;
struct in_addr ciaddr;
struct in_addr yiaddr;
struct in_addr siaddr;
struct in_addr giaddr;
unsigned char chaddr[16];
char sname[64];
char file[128];
unsigned char vend[256];
};
#define IPPORT_BOOTPC 68
#define IPPORT_BOOTPS 67
extern int nfs_diskless_valid;
extern struct nfsv3_diskless nfsv3_diskless;
/* mountd RPC */
#if !defined(__rtems__)
static int md_mount __P((struct sockaddr_in *mdsin, char *path,
u_char *fhp, int *fhsizep, struct nfs_args *args,struct proc *procp));
static int md_lookup_swap __P((struct sockaddr_in *mdsin,char *path,
u_char *fhp, int *fhsizep,
struct nfs_args *args,
struct proc *procp));
static int setfs __P((struct sockaddr_in *addr, char *path, char *p));
static int getdec __P((char **ptr));
#endif
static char *substr __P((char *a,char *b));
#if !defined(__rtems__)
static void mountopts __P((struct nfs_args *args, char *p));
static int xdr_opaque_decode __P((struct mbuf **ptr,u_char *buf,
int len));
static int xdr_int_decode __P((struct mbuf **ptr,int *iptr));
#endif
static void printip __P((char *prefix,struct in_addr addr));
#ifdef BOOTP_DEBUG
void bootpboot_p_sa(struct sockaddr *sa,struct sockaddr *ma);
void bootpboot_p_ma(struct sockaddr *ma);
void bootpboot_p_rtentry(struct rtentry *rt);
void bootpboot_p_tree(struct radix_node *rn);
void bootpboot_p_rtlist(void);
void bootpboot_p_iflist(void);
#endif
int bootpc_call(struct bootp_packet *call,
struct bootp_packet *reply,
struct proc *procp);
int bootpc_fakeup_interface(struct ifreq *ireq,struct socket *so,
struct proc *procp);
int
bootpc_adjust_interface(struct ifreq *ireq,struct socket *so,
struct sockaddr_in *myaddr,
struct sockaddr_in *netmask,
struct sockaddr_in *gw,
struct proc *procp);
void bootpc_init(void);
#ifdef BOOTP_DEBUG
void bootpboot_p_sa(sa,ma)
struct sockaddr *sa;
struct sockaddr *ma;
{
if (!sa) {
printf("(sockaddr *) <null>");
return;
}
switch (sa->sa_family) {
case AF_INET:
{
struct sockaddr_in *sin = (struct sockaddr_in *) sa;
printf("inet %x",ntohl(sin->sin_addr.s_addr));
if (ma) {
struct sockaddr_in *sin = (struct sockaddr_in *) ma;
printf(" mask %x",ntohl(sin->sin_addr.s_addr));
}
}
break;
case AF_LINK:
{
struct sockaddr_dl *sli = (struct sockaddr_dl *) sa;
int i;
printf("link %.*s ",sli->sdl_nlen,sli->sdl_data);
for (i=0;i<sli->sdl_alen;i++) {
if (i>0)
printf(":");
printf("%x",(unsigned char) sli->sdl_data[i+sli->sdl_nlen]);
}
}
break;
default:
printf("af%d",sa->sa_family);
}
}
void bootpboot_p_ma(ma)
struct sockaddr *ma;
{
if (!ma) {
printf("<null>");
return;
}
printf("%x",*(int*)ma);
}
void bootpboot_p_rtentry(rt)
struct rtentry *rt;
{
bootpboot_p_sa(rt_key(rt),rt_mask(rt));
printf(" ");
bootpboot_p_ma(rt->rt_genmask);
printf(" ");
bootpboot_p_sa(rt->rt_gateway,NULL);
printf(" ");
printf("flags %x",(unsigned short) rt->rt_flags);
printf(" %d",rt->rt_rmx.rmx_expire);
printf(" %s%d\n",rt->rt_ifp->if_name,rt->rt_ifp->if_unit);
}
void bootpboot_p_tree(rn)
struct radix_node *rn;
{
while (rn) {
if (rn->rn_b < 0) {
if (rn->rn_flags & RNF_ROOT) {
} else {
bootpboot_p_rtentry((struct rtentry *) rn);
}
rn = rn->rn_dupedkey;
} else {
bootpboot_p_tree(rn->rn_l);
bootpboot_p_tree(rn->rn_r);
return;
}
}
}
void bootpboot_p_rtlist(void)
{
printf("Routing table:\n");
bootpboot_p_tree(rt_tables[AF_INET]->rnh_treetop);
}
void bootpboot_p_iflist(void)
{
struct ifnet *ifp;
struct ifaddr *ifa;
printf("Interface list:\n");
for (ifp = TAILQ_FIRST(&ifnet); ifp != 0; ifp = TAILQ_NEXT(ifp,if_link))
{
for (ifa = TAILQ_FIRST(&ifp->if_addrhead) ;ifa;
ifa=TAILQ_NEXT(ifa,ifa_link))
if (ifa->ifa_addr->sa_family == AF_INET ) {
printf("%s%d flags %x, addr %x, bcast %x, net %x\n",
ifp->if_name,ifp->if_unit,
(unsigned short) ifp->if_flags,
ntohl(((struct sockaddr_in *) ifa->ifa_addr)->sin_addr.s_addr),
ntohl(((struct sockaddr_in *) ifa->ifa_dstaddr)->sin_addr.s_addr),
ntohl(((struct sockaddr_in *) ifa->ifa_netmask)->sin_addr.s_addr)
);
}
}
}
#endif
int
bootpc_call(call,reply,procp)
struct bootp_packet *call;
struct bootp_packet *reply; /* output */
struct proc *procp;
{
struct socket *so;
struct sockaddr_in *sin;
struct mbuf *m, *nam;
struct uio auio;
struct iovec aio;
int error, rcvflg, timo, secs, len;
/* Free at end if not null. */
nam = NULL;
/*
* Create socket and set its recieve timeout.
*/
if ((error = socreate(AF_INET, &so, SOCK_DGRAM, 0,procp)))
goto out;
m = m_get(M_WAIT, MT_SOOPTS);
if (m == NULL) {
error = ENOBUFS;
goto out;
} else {
struct timeval *tv;
tv = mtod(m, struct timeval *);
m->m_len = sizeof(*tv);
tv->tv_sec = 1;
tv->tv_usec = 0;
if ((error = sosetopt(so, SOL_SOCKET, SO_RCVTIMEO, m)))
goto out;
}
/*
* Enable broadcast.
*/
{
int *on;
m = m_get(M_WAIT, MT_SOOPTS);
if (m == NULL) {
error = ENOBUFS;
goto out;
}
on = mtod(m, int *);
m->m_len = sizeof(*on);
*on = 1;
if ((error = sosetopt(so, SOL_SOCKET, SO_BROADCAST, m)))
goto out;
}
/*
* Bind the local endpoint to a bootp client port.
*/
m = m_getclr(M_WAIT, MT_SONAME);
sin = mtod(m, struct sockaddr_in *);
sin->sin_len = m->m_len = sizeof(*sin);
sin->sin_family = AF_INET;
sin->sin_addr.s_addr = INADDR_ANY;
sin->sin_port = htons(IPPORT_BOOTPC);
error = sobind(so, m);
m_freem(m);
if (error) {
printf("bind failed\n");
goto out;
}
/*
* Setup socket address for the server.
*/
nam = m_get(M_WAIT, MT_SONAME);
if (nam == NULL) {
error = ENOBUFS;
goto out;
}
sin = mtod(nam, struct sockaddr_in *);
sin-> sin_len = sizeof(*sin);
sin-> sin_family = AF_INET;
sin->sin_addr.s_addr = INADDR_BROADCAST;
sin->sin_port = htons(IPPORT_BOOTPS);
nam->m_len = sizeof(*sin);
/*
* Send it, repeatedly, until a reply is received,
* but delay each re-send by an increasing amount.
* If the delay hits the maximum, start complaining.
*/
timo = 0;
for (;;) {
/* Send BOOTP request (or re-send). */
aio.iov_base = (caddr_t) call;
aio.iov_len = sizeof(*call);
auio.uio_iov = &aio;
auio.uio_iovcnt = 1;
auio.uio_segflg = UIO_SYSSPACE;
auio.uio_rw = UIO_WRITE;
auio.uio_offset = 0;
auio.uio_resid = sizeof(*call);
auio.uio_procp = procp;
error = sosend(so, nam, &auio, NULL, NULL, 0);
if (error) {
printf("bootpc_call: sosend: %d\n", error);
goto out;
}
/* Determine new timeout. */
if (timo < MAX_RESEND_DELAY)
timo++;
else
printf("BOOTP timeout for server 0x%x\n",
(int)ntohl(sin->sin_addr.s_addr));
/*
* Wait for up to timo seconds for a reply.
* The socket receive timeout was set to 1 second.
*/
secs = timo;
while (secs > 0) {
aio.iov_base = (caddr_t) reply;
aio.iov_len = sizeof(*reply);
auio.uio_iov = &aio;
auio.uio_iovcnt = 1;
auio.uio_segflg = UIO_SYSSPACE;
auio.uio_rw = UIO_READ;
auio.uio_offset = 0;
auio.uio_resid = sizeof(*reply);
auio.uio_procp = procp;
rcvflg = 0;
error = soreceive(so, NULL, &auio, NULL, NULL, &rcvflg);
if (error == EWOULDBLOCK) {
secs--;
call->secs=htons(ntohs(call->secs)+1);
continue;
}
if (error)
goto out;
len = sizeof(*reply) - auio.uio_resid;
/* Do we have the required number of bytes ? */
if (len < BOOTP_MIN_LEN)
continue;
/* Is it the right reply? */
if (reply->op != 2)
continue;
if (reply->xid != call->xid)
continue;
if (reply->hlen != call->hlen)
continue;
if (bcmp(reply->chaddr,call->chaddr,call->hlen))
continue;
goto gotreply; /* break two levels */
} /* while secs */
} /* forever send/receive */
error = ETIMEDOUT;
goto out;
gotreply:
out:
if (nam) m_freem(nam);
soclose(so);
return error;
}
int
bootpc_fakeup_interface(struct ifreq *ireq,struct socket *so,
struct proc *procp)
{
struct sockaddr_in *sin;
int error;
struct sockaddr_in dst;
struct sockaddr_in gw;
struct sockaddr_in mask;
/*
* Bring up the interface.
*
* Get the old interface flags and or IFF_UP into them; if
* IFF_UP set blindly, interface selection can be clobbered.
*/
error = ifioctl(so, SIOCGIFFLAGS, (caddr_t)ireq, procp);
if (error)
panic("bootpc_fakeup_interface: GIFFLAGS, error=%d", error);
ireq->ifr_flags |= IFF_UP;
error = ifioctl(so, SIOCSIFFLAGS, (caddr_t)ireq, procp);
if (error)
panic("bootpc_fakeup_interface: SIFFLAGS, error=%d", error);
/*
* Do enough of ifconfig(8) so that the chosen interface
* can talk to the servers. (just set the address)
*/
/* addr is 0.0.0.0 */
sin = (struct sockaddr_in *)&ireq->ifr_addr;
bzero((caddr_t)sin, sizeof(*sin));
sin->sin_len = sizeof(*sin);
sin->sin_family = AF_INET;
sin->sin_addr.s_addr = INADDR_ANY;
error = ifioctl(so, SIOCSIFADDR, (caddr_t)ireq, procp);
if (error)
panic("bootpc_fakeup_interface: set if addr, error=%d", error);
/* netmask is 0.0.0.0 */
sin = (struct sockaddr_in *)&ireq->ifr_addr;
bzero((caddr_t)sin, sizeof(*sin));
sin->sin_len = sizeof(*sin);
sin->sin_family = AF_INET;
sin->sin_addr.s_addr = INADDR_ANY;
error = ifioctl(so, SIOCSIFNETMASK, (caddr_t)ireq, procp);
if (error)
panic("bootpc_fakeup_interface: set if net addr, error=%d", error);
/* Broadcast is 255.255.255.255 */
sin = (struct sockaddr_in *)&ireq->ifr_addr;
bzero((caddr_t)sin, sizeof(*sin));
sin->sin_len = sizeof(*sin);
sin->sin_family = AF_INET;
sin->sin_addr.s_addr = INADDR_BROADCAST;
error = ifioctl(so, SIOCSIFBRDADDR, (caddr_t)ireq, procp);
if (error)
panic("bootpc_fakeup_interface: set if broadcast addr, error=%d", error);
/* Add default route to 0.0.0.0 so we can send data */
bzero((caddr_t) &dst, sizeof(dst));
dst.sin_len=sizeof(dst);
dst.sin_family=AF_INET;
dst.sin_addr.s_addr = htonl(0);
bzero((caddr_t) &gw, sizeof(gw));
gw.sin_len=sizeof(gw);
gw.sin_family=AF_INET;
gw.sin_addr.s_addr = htonl(0x0);
bzero((caddr_t) &mask, sizeof(mask));
mask.sin_len=sizeof(mask);
mask.sin_family=AF_INET;
mask.sin_addr.s_addr = htonl(0);
error = rtrequest(RTM_ADD,
(struct sockaddr *) &dst,
(struct sockaddr *) &gw,
(struct sockaddr *) &mask,
RTF_UP | RTF_STATIC
, NULL);
if (error)
printf("bootpc_fakeup_interface: add default route, error=%d\n", error);
return error;
}
int
bootpc_adjust_interface(struct ifreq *ireq,struct socket *so,
struct sockaddr_in *myaddr,
struct sockaddr_in *netmask,
struct sockaddr_in *gw,
struct proc *procp)
{
int error;
struct sockaddr_in oldgw;
struct sockaddr_in olddst;
struct sockaddr_in oldmask;
struct sockaddr_in *sin;
/* Remove old default route to 0.0.0.0 */
bzero((caddr_t) &olddst, sizeof(olddst));
olddst.sin_len=sizeof(olddst);
olddst.sin_family=AF_INET;
olddst.sin_addr.s_addr = INADDR_ANY;
bzero((caddr_t) &oldgw, sizeof(oldgw));
oldgw.sin_len=sizeof(oldgw);
oldgw.sin_family=AF_INET;
oldgw.sin_addr.s_addr = INADDR_ANY;
bzero((caddr_t) &oldmask, sizeof(oldmask));
oldmask.sin_len=sizeof(oldmask);
oldmask.sin_family=AF_INET;
oldmask.sin_addr.s_addr = INADDR_ANY;
error = rtrequest(RTM_DELETE,
(struct sockaddr *) &olddst,
(struct sockaddr *) &oldgw,
(struct sockaddr *) &oldmask,
(RTF_UP | RTF_STATIC), NULL);
if (error) {
printf("nfs_boot: del default route, error=%d\n", error);
return error;
}
/*
* Do enough of ifconfig(8) so that the chosen interface
* can talk to the servers. (just set the address)
*/
bcopy(netmask,&ireq->ifr_addr,sizeof(*netmask));
error = ifioctl(so, SIOCSIFNETMASK, (caddr_t)ireq, procp);
if (error)
panic("nfs_boot: set if netmask, error=%d", error);
/* Broadcast is with host part of IP address all 1's */
sin = (struct sockaddr_in *)&ireq->ifr_addr;
bzero((caddr_t)sin, sizeof(*sin));
sin->sin_len = sizeof(*sin);
sin->sin_family = AF_INET;
sin->sin_addr.s_addr = myaddr->sin_addr.s_addr | ~ netmask->sin_addr.s_addr;
error = ifioctl(so, SIOCSIFBRDADDR, (caddr_t)ireq, procp);
if (error)
panic("bootpc_call: set if broadcast addr, error=%d", error);
bcopy(myaddr,&ireq->ifr_addr,sizeof(*myaddr));
error = ifioctl(so, SIOCSIFADDR, (caddr_t)ireq, procp);
if (error)
panic("nfs_boot: set if addr, error=%d", error);
/* Add new default route */
error = rtrequest(RTM_ADD,
(struct sockaddr *) &olddst,
(struct sockaddr *) gw,
(struct sockaddr *) &oldmask,
(RTF_UP | RTF_GATEWAY | RTF_STATIC), NULL);
if (error) {
printf("nfs_boot: add net route, error=%d\n", error);
return error;
}
return 0;
}
#if !defined(__rtems__)
static int setfs(addr, path, p)
struct sockaddr_in *addr;
char *path;
char *p;
{
unsigned ip = 0;
int val;
if (((val = getdec(&p)) < 0) || (val > 255)) return(0);
ip = val << 24;
if (*p != '.') return(0);
p++;
if (((val = getdec(&p)) < 0) || (val > 255)) return(0);
ip |= (val << 16);
if (*p != '.') return(0);
p++;
if (((val = getdec(&p)) < 0) || (val > 255)) return(0);
ip |= (val << 8);
if (*p != '.') return(0);
p++;
if (((val = getdec(&p)) < 0) || (val > 255)) return(0);
ip |= val;
if (*p != ':') return(0);
p++;
addr->sin_addr.s_addr = htonl(ip);
addr->sin_len = sizeof(struct sockaddr_in);
addr->sin_family = AF_INET;
strncpy(path,p,MNAMELEN-1);
return(1);
}
#endif
static int getdec(ptr)
char **ptr;
{
char *p = *ptr;
int ret=0;
if ((*p < '0') || (*p > '9')) return(-1);
while ((*p >= '0') && (*p <= '9')) {
ret = ret*10 + (*p - '0');
p++;
}
*ptr = p;
return(ret);
}
static char *substr(a,b)
char *a,*b;
{
char *loc1;
char *loc2;
while (*a != '\0') {
loc1 = a;
loc2 = b;
while (*loc1 == *loc2++) {
if (*loc1 == '\0') return (0);
loc1++;
if (*loc2 == '\0') return (loc1);
}
a++;
}
return (0);
}
static void printip(char *prefix,struct in_addr addr)
{
unsigned int ip;
ip = ntohl(addr.s_addr);
printf("%s is %d.%d.%d.%d\n",prefix,
ip >> 24, (ip >> 16) & 255 ,(ip >> 8) & 255 ,ip & 255 );
}
static int dhcpOptionOverload = 0;
static char dhcp_gotgw = 0;
static char dhcp_gotnetmask = 0;
static char dhcp_gotserver = 0;
static char dhcp_gotlogserver = 0;
static struct sockaddr_in dhcp_netmask;
static struct sockaddr_in dhcp_gw;
static void
processOptions (unsigned char *optbuf, int optbufSize)
{
int j = 0;
int len;
int code, ncode;
char *p;
ncode = optbuf[0];
while (j < optbufSize) {
code = optbuf[j] = ncode;
if (code == 255)
return;
if (code == 0) {
j++;
continue;
}
len = optbuf[j+1];
j += 2;
if ((len + j) >= optbufSize) {
printf ("Truncated field for code %d", code);
return;
}
ncode = optbuf[j+len];
optbuf[j+len] = '\0';
p = &optbuf[j];
j += len;
/*
* Process the option
*/
switch (code) {
case 1:
/* Subnet mask */
if (len!=4)
panic("bootpc: subnet mask len is %d",len);
bcopy (p, &dhcp_netmask.sin_addr, 4);
dhcp_gotnetmask = 1;
break;
case 2:
/* Time offset */
if (len!=4)
panic("bootpc: time offset len is %d",len);
bcopy (p, &rtems_bsdnet_timeoffset, 4);
rtems_bsdnet_timeoffset = ntohl (rtems_bsdnet_timeoffset);
break;
case 3:
/* Routers */
if (len % 4)
panic ("bootpc: Router Len is %d", len);
if (len > 0) {
bcopy(p, &dhcp_gw.sin_addr, 4);
dhcp_gotgw = 1;
}
break;
case 42:
/* NTP servers */
if (len % 4)
panic ("bootpc: time server Len is %d", len);
{
int tlen = 0;
while ((tlen < len) &&
(rtems_bsdnet_ntpserver_count < sizeof rtems_bsdnet_config.ntp_server /
sizeof rtems_bsdnet_config.ntp_server[0])) {
bcopy (p+tlen,
&rtems_bsdnet_ntpserver[rtems_bsdnet_ntpserver_count],
4);
printip("Time Server",
rtems_bsdnet_ntpserver[rtems_bsdnet_ntpserver_count]);
rtems_bsdnet_ntpserver_count++;
tlen += 4;
}
}
break;
case 6:
/* Domain Name servers */
if (len % 4)
panic ("bootpc: DNS Len is %d", len);
{
int dlen = 0;
while ((dlen < len) &&
(rtems_bsdnet_nameserver_count < sizeof rtems_bsdnet_config.name_server /
sizeof rtems_bsdnet_config.name_server[0])) {
bcopy (p+dlen,
&rtems_bsdnet_nameserver[rtems_bsdnet_nameserver_count],
4);
printip("Domain Name Server",
rtems_bsdnet_nameserver[rtems_bsdnet_nameserver_count]);
rtems_bsdnet_nameserver_count++;
dlen += 4;
}
}
break;
case 12:
/* Host name */
if (len>=MAXHOSTNAMELEN)
panic ("bootpc: hostname >=%d bytes", MAXHOSTNAMELEN);
if (sethostname (p, len) < 0)
panic("Can't set host name");
printf("Hostname is %s\n", p);
break;
case 7:
/* Log servers */
if (len % 4)
panic ("bootpc: Log server Len is %d", len);
if (len > 0) {
bcopy(p, &rtems_bsdnet_log_host_address, 4);
dhcp_gotlogserver = 1;
}
break;
case 15:
/* Domain name */
if (p[0]) {
rtems_bsdnet_domain_name = strdup (p);
printf("Domain name is %s\n", rtems_bsdnet_domain_name);
}
break;
case 16: /* Swap server IP address. unused */
break;
case 52:
/* DHCP option override */
if (len != 1)
panic ("bootpc: DHCP option overload len is %d", len);
dhcpOptionOverload = p[0];
break;
case 128: /* Site-specific option for DHCP servers that
* a) don't supply tag 54
* and
* b) don't supply the server address in siaddr
* For example, on Solaris 2.6 in.dhcpd, include in the dhcptab:
* Bootsrv s Site,128,IP,1,1
* and use that symbol in the macro that defines the client:
* Bootsrv=<tftp-server-ip-address>
*/
case 54:
/* DHCP server */
if (len != 4)
panic ("bootpc: DHCP server len is %d", len);
bcopy(p, &rtems_bsdnet_bootp_server_address, 4);
dhcp_gotserver = 1;
break;
case 66:
/* DHCP server name option */
if (p[0])
rtems_bsdnet_bootp_server_name = strdup (p);
break;
case 67:
/* DHCP bootfile option */
if (p[0])
rtems_bsdnet_bootp_boot_file_name = strdup (p);
break;
default:
printf ("Ignoring BOOTP/DHCP option code %d\n", code);
break;
}
}
}
#define EALEN 6
void
bootpc_init(void)
{
struct bootp_packet call;
struct bootp_packet reply;
static u_int32_t xid = ~0xFF;
struct ifreq ireq;
struct ifnet *ifp;
struct socket *so;
int j;
int error;
struct sockaddr_in myaddr;
struct ifaddr *ifa;
struct sockaddr_dl *sdl = NULL;
char *delim;
struct proc *procp = NULL;
/*
* If already filled in, don't touch it here
*/
if (nfs_diskless_valid)
return;
/*
* Find a network interface.
*/
for (ifp = ifnet; ifp != 0; ifp = ifp->if_next)
if ((ifp->if_flags &
(IFF_LOOPBACK|IFF_POINTOPOINT)) == 0)
break;
if (ifp == NULL)
panic("bootpc_init: no suitable interface");
bzero(&ireq,sizeof(ireq));
sprintf(ireq.ifr_name, "%s%d", ifp->if_name,ifp->if_unit);
printf("bootpc_init: using network interface '%s'\n",
ireq.ifr_name);
if ((error = socreate(AF_INET, &so, SOCK_DGRAM, 0,procp)) != 0)
panic("nfs_boot: socreate, error=%d", error);
bootpc_fakeup_interface(&ireq,so,procp);
printf("Bootpc testing starting\n");
/* Get HW address */
for (ifa = ifp->if_addrlist;ifa; ifa = ifa->ifa_next)
if (ifa->ifa_addr->sa_family == AF_LINK &&
(sdl = ((struct sockaddr_dl *) ifa->ifa_addr)) &&
sdl->sdl_type == IFT_ETHER)
break;
if (!sdl)
panic("bootpc: Unable to find HW address");
if (sdl->sdl_alen != EALEN )
panic("bootpc: HW address len is %d, expected value is %d",
sdl->sdl_alen,EALEN);
printf("bootpc hw address is ");
delim="";
for (j=0;j<sdl->sdl_alen;j++) {
printf("%s%x",delim,((unsigned char *)LLADDR(sdl))[j]);
delim=":";
}
printf("\n");
#if 0
bootpboot_p_iflist();
bootpboot_p_rtlist();
#endif
bzero((caddr_t) &call, sizeof(call));
/* bootpc part */
call.op = 1; /* BOOTREQUEST */
call.htype= 1; /* 10mb ethernet */
call.hlen=sdl->sdl_alen; /* Hardware address length */
call.hops=0;
xid++;
call.xid = txdr_unsigned(xid);
bcopy(LLADDR(sdl),&call.chaddr,sdl->sdl_alen);
call.vend[0]=99;
call.vend[1]=130;
call.vend[2]=83;
call.vend[3]=99;
call.vend[4]=255;
call.secs = 0;
call.flags = htons(0x8000); /* We need an broadcast answer */
error = bootpc_call(&call,&reply,procp);
if (error)
panic("BOOTP call failed -- error %d", error);
/*
* Initialize network address structures
*/
bzero(&myaddr,sizeof(myaddr));
bzero(&dhcp_netmask,sizeof(dhcp_netmask));
bzero(&dhcp_gw,sizeof(dhcp_gw));
myaddr.sin_len = sizeof(myaddr);
myaddr.sin_family = AF_INET;
dhcp_netmask.sin_len = sizeof(dhcp_netmask);
dhcp_netmask.sin_family = AF_INET;
dhcp_gw.sin_len = sizeof(dhcp_gw);
dhcp_gw.sin_family= AF_INET;
/*
* Set our address
*/
myaddr.sin_addr = reply.yiaddr;
printip("My ip address",myaddr.sin_addr);
/*
* Process BOOTP/DHCP options
*/
if (reply.vend[0]==99 && reply.vend[1]==130 &&
reply.vend[2]==83 && reply.vend[3]==99) {
processOptions (&reply.vend[4], sizeof(reply.vend) - 4);
}
if (dhcpOptionOverload & 1) {
processOptions (reply.file, sizeof reply.file);
}
else {
if (reply.file[0])
rtems_bsdnet_bootp_boot_file_name = strdup (reply.file);
}
if (dhcpOptionOverload & 2) {
processOptions (reply.sname, sizeof reply.sname);
}
else {
if (reply.sname[0])
rtems_bsdnet_bootp_server_name = strdup (reply.sname);
}
if (rtems_bsdnet_bootp_server_name)
printf ("Server name is %s\n", rtems_bsdnet_bootp_server_name);
if (rtems_bsdnet_bootp_boot_file_name)
printf ("Boot file is %s\n", rtems_bsdnet_bootp_boot_file_name);
/*
* Use defaults if values were not supplied by BOOTP/DHCP options
*/
if (!dhcp_gotnetmask) {
if (IN_CLASSA(ntohl(myaddr.sin_addr.s_addr)))
dhcp_netmask.sin_addr.s_addr = htonl(IN_CLASSA_NET);
else if (IN_CLASSB(ntohl(myaddr.sin_addr.s_addr)))
dhcp_netmask.sin_addr.s_addr = htonl(IN_CLASSB_NET);
else
dhcp_netmask.sin_addr.s_addr = htonl(IN_CLASSC_NET);
}
printip ("Subnet mask", dhcp_netmask.sin_addr);
if (!dhcp_gotserver)
rtems_bsdnet_bootp_server_address = reply.siaddr;
printip ("Server ip address" ,rtems_bsdnet_bootp_server_address);
if (!dhcp_gotgw)
dhcp_gw.sin_addr = reply.giaddr;
printip ("Gateway ip address", dhcp_gw.sin_addr);
if (!dhcp_gotlogserver)
rtems_bsdnet_log_host_address = rtems_bsdnet_bootp_server_address;
printip ("Log server ip address", rtems_bsdnet_log_host_address);
/*
* Configure the interface with the new settings
*/
error = bootpc_adjust_interface(&ireq,so,
&myaddr,&dhcp_netmask,&dhcp_gw,procp);
soclose(so);
}
