int
net_mountroot(void)
{
#ifdef DEBUG
printf("net_mountroot\n");
#endif
/*
* Get info for NFS boot: our IP address, our hostname,
* server IP address, and our root path on the server.
* There are two ways to do this: The old, Sun way,
* and the more modern, BOOTP way. (RFC951, RFC1048)
*/
#ifdef SUN_BOOTPARAMS
/* Get boot info using RARP and Sun bootparams. */
/* Get our IP address. (rarp.c) */
if (rarp_getipaddress(netdev_sock) == -1)
return errno;
printf("boot: client IP address: %s\n", inet_ntoa(myip));
/* Get our hostname, server IP address. */
if (bp_whoami(netdev_sock))
return (errno);
printf("boot: client name: %s\n", hostname);
/* Get the root pathname. */
if (bp_getfile(netdev_sock, "root", &rootip, rootpath))
return (errno);
#else
/* Get boot info using BOOTP way. (RFC951, RFC1048) */
bootp(netdev_sock);
printf("Using IP address: %s\n", inet_ntoa(myip));
printf("myip: %s (%s)", hostname, inet_ntoa(myip));
if (gateip)
printf(", gateip: %s", inet_ntoa(gateip));
if (netmask)
printf(", netmask: %s", intoa(netmask));
printf("\n");
#endif
printf("root addr=%s path=%s\n", inet_ntoa(rootip), rootpath);
/* Get the NFS file handle (mount). */
if (nfs_mount(netdev_sock, rootip, rootpath) != 0)
return (errno);
return 0;
}
/*
* RARP/TFTP bootstrap loader consists of two phases. During the
* first phase the loader tries to determine its IP address by
* using the RARP protocol. The seconds phase consist of using
* TFTP to download the program to be booted. First a TFTP read
* file is tried with the first host that answered the RARP
* request, if this fails a TFTP read file is broadcasted in the
* hope that someone out there knows the file.
*/
main()
{
ipaddr_t server = IP_BCASTADDR;
int loaded = 0;
/* initialize ethernet board, and random generator */
printf("RARP/TFTP bootstrap loader\n\n");
pkt_init();
if (!eth_init()) {
printf("No ethernet board found\n");
halt();
}
srand(timer() ^ eth_myaddr[5]);
#ifdef MONITOR
/*
* When ever the user types CRTL BREAK we jump into
* a special kind of monitor program.
*/
printf("** Press <CTRL>-break to go to monitor **\n\n");
if (brkhandler())
monitor(server);
#endif
/* actual RARP/TFTP bootstrap loader */
if (rarp_getipaddress(&server)) {
bootfile(file);
if (!(loaded = tftp(server, ip_gateway, file)))
loaded = tftp(IP_BCASTADDR, ip_gateway, file);
}
#ifdef MONITOR
brkreset();
#endif
eth_stop();
if (loaded)
execute();
reboot();
}
int
net_mountroot_bootparams(void)
{
/* Get our IP address. (rarp.c) */
if (rarp_getipaddress(netdev_sock) == -1)
return (errno);
printf("Using BOOTPARAMS protocol: ");
printf("ip address: %s", inet_ntoa(myip));
/* Get our hostname, server IP address. */
if (bp_whoami(netdev_sock))
return (errno);
printf(", hostname: %s\n", hostname);
/* Get the root pathname. */
if (bp_getfile(netdev_sock, "root", &rootip, rootpath))
return (errno);
return (0);
}
static int
net_getparams(int sock)
{
char buf[MAXHOSTNAMELEN];
n_long rootaddr, smask;
#ifdef SUPPORT_BOOTP
/*
* Try to get boot info using BOOTP. If we succeed, then
* the server IP address, gateway, and root path will all
* be initialized. If any remain uninitialized, we will
* use RARP and RPC/bootparam (the Sun way) to get them.
*/
if (try_bootp)
bootp(sock, BOOTP_NONE);
if (myip.s_addr != 0)
goto exit;
#ifdef NETIF_DEBUG
if (debug)
printf("net_open: BOOTP failed, trying RARP/RPC...\n");
#endif
#endif
/*
* Use RARP to get our IP address. This also sets our
* netmask to the "natural" default for our address.
*/
if (rarp_getipaddress(sock)) {
printf("net_open: RARP failed\n");
return (EIO);
}
printf("net_open: client addr: %s\n", inet_ntoa(myip));
/* Get our hostname, server IP address, gateway. */
if (bp_whoami(sock)) {
printf("net_open: bootparam/whoami RPC failed\n");
return (EIO);
}
#ifdef NETIF_DEBUG
if (debug)
printf("net_open: client name: %s\n", hostname);
#endif
/*
* Ignore the gateway from whoami (unreliable).
* Use the "gateway" parameter instead.
*/
smask = 0;
gateip.s_addr = 0;
if (bp_getfile(sock, "gateway", &gateip, buf) == 0) {
/* Got it! Parse the netmask. */
smask = ip_convertaddr(buf);
}
if (smask) {
netmask = smask;
#ifdef NETIF_DEBUG
if (debug)
printf("net_open: subnet mask: %s\n", intoa(netmask));
#endif
}
#ifdef NETIF_DEBUG
if (gateip.s_addr && debug)
printf("net_open: net gateway: %s\n", inet_ntoa(gateip));
#endif
/* Get the root server and pathname. */
if (bp_getfile(sock, "root", &rootip, rootpath)) {
printf("net_open: bootparam/getfile RPC failed\n");
return (EIO);
}
exit:
if ((rootaddr = net_parse_rootpath()) != INADDR_NONE)
rootip.s_addr = rootaddr;
#ifdef NETIF_DEBUG
if (debug) {
printf("net_open: server addr: %s\n", inet_ntoa(rootip));
printf("net_open: server path: %s\n", rootpath);
}
#endif
return (0);
}
int
netmountroot(struct open_file *f, char *devname)
{
int error;
struct iodesc *d;
#ifdef DEBUG
printf("netmountroot: %s\n", devname);
#endif
if (netio_ask) {
get_my_ip:
printf("My IP address? ");
bzero(input_line, sizeof(input_line));
gets(input_line);
if ((myip.s_addr = inet_addr(input_line)) ==
htonl(INADDR_NONE)) {
printf("invalid IP address: %s\n", input_line);
goto get_my_ip;
}
get_my_netmask:
printf("My netmask? ");
bzero(input_line, sizeof(input_line));
gets(input_line);
if ((netmask = inet_addr(input_line)) ==
htonl(INADDR_NONE)) {
printf("invalid netmask: %s\n", input_line);
goto get_my_netmask;
}
get_my_gateway:
printf("My gateway? ");
bzero(input_line, sizeof(input_line));
gets(input_line);
if ((gateip.s_addr = inet_addr(input_line)) ==
htonl(INADDR_NONE)) {
printf("invalid IP address: %s\n", input_line);
goto get_my_gateway;
}
get_server_ip:
printf("Server IP address? ");
bzero(input_line, sizeof(input_line));
gets(input_line);
if ((rootip.s_addr = inet_addr(input_line)) ==
htonl(INADDR_NONE)) {
printf("invalid IP address: %s\n", input_line);
goto get_server_ip;
}
get_server_path:
printf("Server path? ");
bzero(rootpath, sizeof(rootpath));
gets(rootpath);
if (rootpath[0] == '\0' || rootpath[0] == '\n')
goto get_server_path;
if ((d = socktodesc(netdev_sock)) == NULL)
return (EMFILE);
d->myip = myip;
goto do_nfs_mount;
}
/*
* Get info for NFS boot: our IP address, our hostname,
* server IP address, and our root path on the server.
* There are two ways to do this: The old, Sun way,
* and the more modern, BOOTP way. (RFC951, RFC1048)
*/
#ifdef SUN_BOOTPARAMS
/* Get boot info using RARP and Sun bootparams. */
/* Get our IP address. (rarp.c) */
if (rarp_getipaddress(netdev_sock) == -1)
return (errno);
printf("boot: client IP address: %s\n", inet_ntoa(myip));
/* Get our hostname, server IP address. */
if (bp_whoami(netdev_sock))
return (errno);
printf("boot: client name: %s\n", hostname);
/* Get the root pathname. */
if (bp_getfile(netdev_sock, "root", &rootip, rootpath))
return (errno);
#else
/* Get boot info using BOOTP way. (RFC951, RFC1048) */
bootp(netdev_sock);
printf("Using IP address: %s\n", inet_ntoa(myip));
printf("myip: %s (%s)", hostname, inet_ntoa(myip));
if (gateip)
printf(", gateip: %s", inet_ntoa(gateip));
if (mask)
printf(", mask: %s", intoa(netmask));
printf("\n");
#endif /* SUN_BOOTPARAMS */
printf("root addr=%s path=%s\n", inet_ntoa(rootip), rootpath);
do_nfs_mount:
/* Get the NFS file handle (mount). */
error = nfs_mount(netdev_sock, rootip, rootpath);
return (error);
}
static int
net_getparams(int sock)
{
char buf[MAXHOSTNAMELEN];
char temp[FNAME_SIZE];
struct iodesc *d;
int i;
n_long smask;
#ifdef SUPPORT_BOOTP
/*
* Try to get boot info using BOOTP. If we succeed, then
* the server IP address, gateway, and root path will all
* be initialized. If any remain uninitialized, we will
* use RARP and RPC/bootparam (the Sun way) to get them.
*/
if (try_bootp)
bootp(sock, BOOTP_NONE);
if (myip.s_addr != 0)
goto exit;
if (debug)
printf("net_open: BOOTP failed, trying RARP/RPC...\n");
#endif
/*
* Use RARP to get our IP address. This also sets our
* netmask to the "natural" default for our address.
*/
if (rarp_getipaddress(sock)) {
printf("net_open: RARP failed\n");
return (EIO);
}
printf("net_open: client addr: %s\n", inet_ntoa(myip));
/* Get our hostname, server IP address, gateway. */
if (bp_whoami(sock)) {
printf("net_open: bootparam/whoami RPC failed\n");
return (EIO);
}
printf("net_open: client name: %s\n", hostname);
/*
* Ignore the gateway from whoami (unreliable).
* Use the "gateway" parameter instead.
*/
smask = 0;
gateip.s_addr = 0;
if (bp_getfile(sock, "gateway", &gateip, buf) == 0) {
/* Got it! Parse the netmask. */
smask = ip_convertaddr(buf);
}
if (smask) {
netmask = smask;
printf("net_open: subnet mask: %s\n", intoa(netmask));
}
if (gateip.s_addr)
printf("net_open: net gateway: %s\n", inet_ntoa(gateip));
/* Get the root server and pathname. */
if (bp_getfile(sock, "root", &rootip, rootpath)) {
printf("net_open: bootparam/getfile RPC failed\n");
return (EIO);
}
exit:
/*
* If present, strip the server's address off of the rootpath
* before passing it along. This allows us to be compatible with
* the kernel's diskless (BOOTP_NFSROOT) booting conventions
*/
for (i = 0; i < FNAME_SIZE && rootpath[i] != '\0'; i++)
if (rootpath[i] == ':')
break;
if (i && i != FNAME_SIZE && rootpath[i] == ':') {
rootpath[i++] = '\0';
if (inet_addr(&rootpath[0]) != INADDR_NONE)
rootip.s_addr = inet_addr(&rootpath[0]);
memcpy(&temp[0], &rootpath[i], strlen(&rootpath[i])+1);
memcpy(&rootpath[0], &temp[0], strlen(&rootpath[i])+1);
}
printf("net_open: server addr: %s\n", inet_ntoa(rootip));
printf("net_open: server path: %s\n", rootpath);
d = socktodesc(sock);
snprintf(temp, sizeof(temp), "%6D", d->myea, ":");
setenv("boot.netif.ip", inet_ntoa(myip), 1);
setenv("boot.netif.netmask", intoa(netmask), 1);
setenv("boot.netif.gateway", inet_ntoa(gateip), 1);
setenv("boot.netif.hwaddr", temp, 1);
setenv("boot.nfsroot.server", inet_ntoa(rootip), 1);
setenv("boot.nfsroot.path", rootpath, 1);
return (0);
}
int
net_devinit(struct open_file *f, struct netif_driver *drv, u_char *eaddr) {
static struct netif best_if;
struct iodesc *s;
int r;
if (inited)
return 0;
/* find a free socket */
s = &desc;
memset(s, 0, sizeof(*s));
best_if.nif_driver = drv;
s->io_netif = &best_if;
memcpy(s->myea, eaddr, 6);
/*
* Get info for NFS boot: our IP address, our hostname,
* server IP address, and our root path on the server.
* There are two ways to do this: The old, Sun way,
* and the more modern, BOOTP way. (RFC951, RFC1048)
*/
#ifdef SUPPORT_BOOTP
/* Get boot info using BOOTP way. (RFC951, RFC1048) */
printf("Trying BOOTP\n");
bootp(0);
if (myip.s_addr) {
printf("Using IP address: %s\n", inet_ntoa(myip));
printf("myip: %s (%s)\n", hostname, inet_ntoa(myip));
} else
#endif /* SUPPORT_BOOTP */
{
#ifdef SUPPORT_BOOTPARAMS
/* Get boot info using RARP and Sun bootparams. */
printf("Trying BOOTPARAMS\n");
/* Get our IP address. (rarp.c) */
if (rarp_getipaddress(0) == -1)
return (errno);
printf("boot: client IP address: %s\n", inet_ntoa(myip));
/* Get our hostname, server IP address. */
if (bp_whoami(0))
return (errno);
printf("boot: client name: %s\n", hostname);
/* Get the root pathname. */
if (bp_getfile(0, "root", &rootip, rootpath))
return (errno);
#endif
}
printf("root addr=%s path=%s\n", inet_ntoa(rootip), rootpath);
f->f_devdata = s;
/* Get the NFS file handle (mount). */
r = nfs_mount(0, rootip, rootpath);
if (r)
return r;
inited = 1;
return 0;
}
/*
* Called by devopen after it sets f->f_dev to our devsw entry.
* This opens the low-level device and sets f->f_devdata.
*/
int
net_open(struct open_file *f, ...)
{
int error = 0;
#ifdef NET_DEBUG
if (netdev_sock != -1)
panic("net_open");
#endif
/* Find network interface. */
if ((netdev_sock = netif_open()) < 0)
return (ENXIO);
#ifdef SUPPORT_BOOTP
printf("configure network...trying bootp\n");
/* Get boot info using BOOTP way. (RFC951, RFC1048) */
bootp(netdev_sock);
#endif
if (myip.s_addr != INADDR_ANY) { /* got bootp reply or
* manually set */
#ifdef TFTP_HACK
int num, i;
/* XXX (some) tftp servers don't like leading "/" */
for (num = 0; bootfile[num] == '/'; num++);
for (i = 0; (bootfile[i] = bootfile[i + num]) != 0; i++);
#endif
printf("boot: client IP address: %s\n",
inet_ntoa(myip));
printf("boot: client name: %s\n", hostname);
} else {
#ifdef SUPPORT_RARP
/*
* no answer, Get boot info using RARP and Sun
* bootparams.
*/
printf("configure network...trying rarp\n");
/* Get our IP address. (rarp.c) */
if (rarp_getipaddress(netdev_sock)) {
error = EIO;
goto bad;
}
printf("boot: client IP address: %s\n",
inet_ntoa(myip));
#ifdef SUPPORT_BOOTPARAM
/* Get our hostname, server IP address. */
if (!bp_whoami(netdev_sock)) {
printf("boot: client name: %s\n", hostname);
/* Get the root pathname. */
bp_getfile(netdev_sock, "root", &rootip,
rootpath);
}
#else
/*
* else fallback: use rarp server address
*/
#endif
#else /* no SUPPORT_RARP */
error = EIO;
goto bad;
#endif
}
printf("boot: server: %s, rootpath: %s, bootfile: %s\n",
inet_ntoa(rootip), rootpath, bootfile);
f->f_devdata = &netdev_sock;
return (error);
bad:
printf("net_open failed\n");
netif_close(netdev_sock);
return (error);
}
