void
nfs_boot_cleanup(struct nfs_diskless *nd, struct lwp *lwp)
{
nfs_boot_deladdress(nd->nd_ifp, lwp, nd->nd_myip.s_addr);
nfs_boot_ifupdown(nd->nd_ifp, lwp, 0);
nfs_boot_flushrt(nd->nd_ifp);
}
/*
* Get client name, gateway address, then
* get root and swap server:pathname info.
* RPCs: bootparam/whoami, bootparam/getfile
*
* Use the old broadcast address for the WHOAMI
* call because we do not yet know our netmask.
* The server address returned by the WHOAMI call
* is used for all subsequent bootparam RPCs.
*/
int
nfs_bootparam(struct nfs_diskless *nd, struct lwp *lwp, int *flags)
{
struct ifnet *ifp = nd->nd_ifp;
struct in_addr my_ip, arps_ip, gw_ip;
struct sockaddr_in bp_sin;
struct sockaddr_in *sin;
#ifndef NFS_BOOTPARAM_NOGATEWAY
struct nfs_dlmount *gw_ndm = 0;
char *p;
u_int32_t mask;
#endif
int error;
/*
* Bring up the interface. (just set the "up" flag)
*/
error = nfs_boot_ifupdown(ifp, lwp, 1);
if (error) {
printf("nfs_boot: SIFFLAGS, error=%d\n", error);
return (error);
}
error = EADDRNOTAVAIL;
#if NARP > 0
if (ifp->if_type == IFT_ETHER || ifp->if_type == IFT_FDDI) {
/*
* Do RARP for the interface address.
*/
error = revarpwhoarewe(ifp, &arps_ip, &my_ip);
}
#endif
if (error) {
printf("revarp failed, error=%d\n", error);
goto out;
}
if (!(*flags & NFS_BOOT_HAS_MYIP)) {
nd->nd_myip.s_addr = my_ip.s_addr;
printf("nfs_boot: client_addr=%s", inet_ntoa(my_ip));
printf(" (RARP from %s)\n", inet_ntoa(arps_ip));
*flags |= NFS_BOOT_HAS_MYIP;
}
/*
* Do enough of ifconfig(8) so that the chosen interface
* can talk to the servers. (just set the address)
*/
error = nfs_boot_setaddress(ifp, lwp, my_ip.s_addr,
INADDR_ANY, INADDR_ANY);
if (error) {
printf("nfs_boot: set ifaddr, error=%d\n", error);
goto out;
}
/*
* Get client name and gateway address.
* RPC: bootparam/whoami
* Use the old broadcast address for the WHOAMI
* call because we do not yet know our netmask.
* The server address returned by the WHOAMI call
* is used for all subsequent booptaram RPCs.
*/
sin = &bp_sin;
memset((void *)sin, 0, sizeof(*sin));
sin->sin_len = sizeof(*sin);
sin->sin_family = AF_INET;
sin->sin_addr.s_addr = INADDR_BROADCAST;
/* Do the RPC/bootparam/whoami. */
error = bp_whoami(sin, &my_ip, &gw_ip, lwp);
if (error) {
printf("nfs_boot: bootparam whoami, error=%d\n", error);
goto delout;
}
*flags |= NFS_BOOT_HAS_SERVADDR | NFS_BOOT_HAS_SERVER;
printf("nfs_boot: server_addr=%s\n", inet_ntoa(sin->sin_addr));
printf("nfs_boot: hostname=%s\n", hostname);
/*
* Now fetch the server:pathname strings and server IP
* for root and swap. Missing swap is not fatal.
*/
error = bp_getfile(sin, "root", &nd->nd_root, lwp);
if (error) {
printf("nfs_boot: bootparam get root: %d\n", error);
goto delout;
}
*flags |= NFS_BOOT_HAS_ROOTPATH;
#ifndef NFS_BOOTPARAM_NOGATEWAY
gw_ndm = kmem_alloc(sizeof(*gw_ndm), KM_SLEEP);
memset((void *)gw_ndm, 0, sizeof(*gw_ndm));
error = bp_getfile(sin, "gateway", gw_ndm, lwp);
if (error) {
/* No gateway supplied. No error, but try fallback. */
error = 0;
goto nogwrepl;
}
sin = (struct sockaddr_in *) &gw_ndm->ndm_saddr;
if (sin->sin_addr.s_addr == 0)
goto out; /* no gateway */
/* OK, we have a gateway! */
printf("nfs_boot: gateway=%s\n", inet_ntoa(sin->sin_addr));
/* Just save it. Caller adds the route. */
nd->nd_gwip = sin->sin_addr;
*flags |= NFS_BOOT_HAS_GWIP;
/* Look for a mask string after the colon. */
p = strchr(gw_ndm->ndm_host, ':');
if (p == 0)
goto out; /* no netmask */
/* have pathname */
p++; /* skip ':' */
mask = inet_addr(p); /* libkern */
if (mask == 0)
goto out; /* no netmask */
/* Have a netmask too! Save it; update the I/F. */
nd->nd_mask.s_addr = mask;
*flags |= NFS_BOOT_HAS_MASK;
printf("nfs_boot: my_mask=%s\n", inet_ntoa(nd->nd_mask));
(void) nfs_boot_deladdress(ifp, lwp, my_ip.s_addr);
error = nfs_boot_setaddress(ifp, lwp, my_ip.s_addr,
mask, INADDR_ANY);
if (error) {
printf("nfs_boot: set ifmask, error=%d\n", error);
goto out;
}
goto gwok;
nogwrepl:
#endif
#ifdef NFS_BOOT_GATEWAY
/*
* Note: we normally ignore the gateway address returned
* by the "bootparam/whoami" RPC above, because many old
* bootparam servers supply a bogus gateway value.
*
* These deficiencies in the bootparam RPC interface are
* circumvented by using the bootparam/getfile RPC. The
* parameter "gateway" is requested, and if its returned,
* we use the "server" part of the reply as the gateway,
* and use the "pathname" part of the reply as the mask.
* (The mask comes to us as a string.)
*/
if (gw_ip.s_addr) {
/* Our caller will add the route. */
nd->nd_gwip = gw_ip;
*flags |= NFS_BOOT_HAS_GWIP;
}
#endif
delout:
if (error)
(void) nfs_boot_deladdress(ifp, lwp, my_ip.s_addr);
out:
if (error) {
(void) nfs_boot_ifupdown(ifp, lwp, 0);
nfs_boot_flushrt(ifp);
}
#ifndef NFS_BOOTPARAM_NOGATEWAY
gwok:
if (gw_ndm)
kmem_free(gw_ndm, sizeof(*gw_ndm));
#endif
if ((*flags & NFS_BOOT_ALLINFO) != NFS_BOOT_ALLINFO)
return error ? error : EADDRNOTAVAIL;
return (error);
}