bool
bootpc_init(bool update_files, bool forever)
{
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 true;
/*
* If we are to update the files create the root
* file structure.
*/
if (update_files)
if (rtems_create_root_fs () < 0) {
printf("Error creating the root filesystem.\nFile not created.\n");
update_files = 0;
}
if (dhcp_hostname != NULL) {
/* free it */
dhcp_hostname=bootp_strdup_realloc(dhcp_hostname,0);
}
/*
* 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) {
printf("bootpc_init: no suitable interface\n");
return false;
}
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) {
printf("bootpc_init: socreate, error=%d", error);
return false;
}
if (bootpc_fakeup_interface(&ireq,so,procp) != 0) {
soclose(so);
return false;
}
/* 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) {
printf("bootpc: Unable to find HW address\n");
soclose(so);
return false;
}
if (sdl->sdl_alen != EALEN ) {
printf("bootpc: HW address len is %d, expected value is %d\n",
sdl->sdl_alen,EALEN);
soclose(so);
return false;
}
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
while (true) {
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)
break;
printf("BOOTP call failed -- error %d", error);
if (!forever) {
soclose(so);
return false;
}
}
/*
* 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 ((unsigned char *)reply.file, sizeof reply.file);
}
else {
if (reply.file[0])
rtems_bsdnet_bootp_boot_file_name =
bootp_strdup_realloc(rtems_bsdnet_bootp_boot_file_name,reply.file);
}
if (dhcpOptionOverload & 2) {
processOptions ((unsigned char *)reply.sname, sizeof reply.sname);
}
else {
if (reply.sname[0])
rtems_bsdnet_bootp_server_name =
bootp_strdup_realloc(rtems_bsdnet_bootp_server_name,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);
if (rtems_bsdnet_bootp_cmdline)
printf ("Command line is %s\n", rtems_bsdnet_bootp_cmdline);
/*
* 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);
/*
* Update the files if we are asked too.
*/
if (update_files) {
char *dn = rtems_bsdnet_domain_name;
char *hn = dhcp_hostname;
if (!dn)
dn = "mydomain";
if (!hn)
hn = "me";
rtems_rootfs_append_host_rec(myaddr.sin_addr.s_addr, hn, dn);
/*
* Should the given domainname be used here ?
*/
if (dhcp_gotserver) {
if (rtems_bsdnet_bootp_server_name)
hn = rtems_bsdnet_bootp_server_name;
else
hn = "bootps";
rtems_rootfs_append_host_rec(rtems_bsdnet_bootp_server_address.s_addr,
hn, dn);
}
if (dhcp_gotlogserver) {
rtems_rootfs_append_host_rec(rtems_bsdnet_log_host_address.s_addr,
"logs", dn);
}
/*
* Setup the DNS configuration file /etc/resolv.conf.
*/
if (rtems_bsdnet_nameserver_count) {
int i;
char buf[64];
const char *bufl[1];
bufl[0] = buf;
#define MKFILE_MODE (S_IRUSR | S_IWUSR | S_IWGRP | S_IRGRP | S_IROTH)
if (rtems_bsdnet_domain_name &&
(strlen(rtems_bsdnet_domain_name) < (sizeof(buf) - 1))) {
strcpy(buf, "search ");
strcat(buf, rtems_bsdnet_domain_name);
strcat(buf, "\n");
rtems_rootfs_file_append ("/etc/resolv.conf", MKFILE_MODE, 1, bufl);
}
for (i = 0; i < rtems_bsdnet_nameserver_count; i++) {
strcpy(buf, "nameserver ");
strcat(buf, inet_ntoa(rtems_bsdnet_nameserver[i]));
strcat(buf, "\n");
if (rtems_rootfs_file_append ("/etc/resolv.conf", MKFILE_MODE, 1, bufl))
break;
}
}
}
/*
* Configure the interface with the new settings
*/
error = bootpc_adjust_interface(&ireq,so,
&myaddr,&dhcp_netmask,&dhcp_gw,procp);
soclose(so);
return true;
}
void
bootpc_init(void)
{
struct bootpc_ifcontext *ifctx, *nctx; /* Interface BOOTP contexts */
struct bootpc_globalcontext *gctx; /* Global BOOTP context */
struct ifnet *ifp;
int error;
#ifndef BOOTP_WIRED_TO
int ifcnt;
#endif
struct nfsv3_diskless *nd;
struct thread *td;
nd = &nfsv3_diskless;
td = curthread;
/*
* If already filled in, don't touch it here
*/
if (nfs_diskless_valid != 0)
return;
gctx = malloc(sizeof(*gctx), M_TEMP, M_WAITOK | M_ZERO);
if (gctx == NULL)
panic("Failed to allocate bootp global context structure");
gctx->xid = ~0xFFFF;
gctx->starttime = time_second;
/*
* Find a network interface.
*/
CURVNET_SET(TD_TO_VNET(td));
#ifdef BOOTP_WIRED_TO
printf("bootpc_init: wired to interface '%s'\n",
__XSTRING(BOOTP_WIRED_TO));
allocifctx(gctx);
#else
/*
* Preallocate interface context storage, if another interface
* attaches and wins the race, it won't be eligible for bootp.
*/
IFNET_RLOCK();
for (ifp = TAILQ_FIRST(&V_ifnet), ifcnt = 0;
ifp != NULL;
ifp = TAILQ_NEXT(ifp, if_link)) {
if ((ifp->if_flags &
(IFF_LOOPBACK | IFF_POINTOPOINT | IFF_BROADCAST)) !=
IFF_BROADCAST)
continue;
ifcnt++;
}
IFNET_RUNLOCK();
if (ifcnt == 0)
panic("bootpc_init: no eligible interfaces");
for (; ifcnt > 0; ifcnt--)
allocifctx(gctx);
#endif
IFNET_RLOCK();
for (ifp = TAILQ_FIRST(&V_ifnet), ifctx = gctx->interfaces;
ifp != NULL && ifctx != NULL;
ifp = TAILQ_NEXT(ifp, if_link)) {
strlcpy(ifctx->ireq.ifr_name, ifp->if_xname,
sizeof(ifctx->ireq.ifr_name));
#ifdef BOOTP_WIRED_TO
if (strcmp(ifctx->ireq.ifr_name,
__XSTRING(BOOTP_WIRED_TO)) != 0)
continue;
#else
if ((ifp->if_flags &
(IFF_LOOPBACK | IFF_POINTOPOINT | IFF_BROADCAST)) !=
IFF_BROADCAST)
continue;
#endif
ifctx->ifp = ifp;
ifctx = ifctx->next;
}
IFNET_RUNLOCK();
CURVNET_RESTORE();
if (gctx->interfaces == NULL || gctx->interfaces->ifp == NULL) {
#ifdef BOOTP_WIRED_TO
panic("bootpc_init: Could not find interface specified "
"by BOOTP_WIRED_TO: "
__XSTRING(BOOTP_WIRED_TO));
#else
panic("bootpc_init: no suitable interface");
#endif
}
for (ifctx = gctx->interfaces; ifctx != NULL; ifctx = ifctx->next)
bootpc_fakeup_interface(ifctx, gctx, td);
for (ifctx = gctx->interfaces; ifctx != NULL; ifctx = ifctx->next)
bootpc_compose_query(ifctx, gctx, td);
error = bootpc_call(gctx, td);
if (error != 0) {
#ifdef BOOTP_NFSROOT
panic("BOOTP call failed");
#else
printf("BOOTP call failed\n");
#endif
}
rootdevnames[0] = "nfs:";
#ifdef NFSCLIENT
rootdevnames[1] = "oldnfs:";
#endif
mountopts(&nd->root_args, NULL);
for (ifctx = gctx->interfaces; ifctx != NULL; ifctx = ifctx->next)
if (bootpc_ifctx_isresolved(ifctx) != 0)
bootpc_decode_reply(nd, ifctx, gctx);
#ifdef BOOTP_NFSROOT
if (gctx->gotrootpath == 0)
panic("bootpc: No root path offered");
#endif
for (ifctx = gctx->interfaces; ifctx != NULL; ifctx = ifctx->next) {
bootpc_adjust_interface(ifctx, gctx, td);
soclose(ifctx->so);
}
for (ifctx = gctx->interfaces; ifctx != NULL; ifctx = ifctx->next)
if (ifctx->gotrootpath != 0)
break;
if (ifctx == NULL) {
for (ifctx = gctx->interfaces;
ifctx != NULL;
ifctx = ifctx->next)
if (bootpc_ifctx_isresolved(ifctx) != 0)
break;
}
if (ifctx == NULL)
goto out;
if (gctx->gotrootpath != 0) {
setenv("boot.netif.name", ifctx->ifp->if_xname);
error = md_mount(&nd->root_saddr, nd->root_hostnam,
nd->root_fh, &nd->root_fhsize,
&nd->root_args, td);
if (error != 0)
panic("nfs_boot: mountd root, error=%d", error);
nfs_diskless_valid = 3;
}
strcpy(nd->myif.ifra_name, ifctx->ireq.ifr_name);
bcopy(&ifctx->myaddr, &nd->myif.ifra_addr, sizeof(ifctx->myaddr));
bcopy(&ifctx->myaddr, &nd->myif.ifra_broadaddr, sizeof(ifctx->myaddr));
((struct sockaddr_in *) &nd->myif.ifra_broadaddr)->sin_addr.s_addr =
ifctx->myaddr.sin_addr.s_addr |
~ ifctx->netmask.sin_addr.s_addr;
bcopy(&ifctx->netmask, &nd->myif.ifra_mask, sizeof(ifctx->netmask));
out:
for (ifctx = gctx->interfaces; ifctx != NULL; ifctx = nctx) {
nctx = ifctx->next;
free(ifctx, M_TEMP);
}
free(gctx, M_TEMP);
}
