1*ddde6caeSderaadt /* $OpenBSD: nfs_boot.c,v 1.10 1997/01/22 18:20:49 deraadt Exp $ */ 209d901c0Sderaadt /* $NetBSD: nfs_boot.c,v 1.26 1996/05/07 02:51:25 thorpej Exp $ */ 3df930be7Sderaadt 4df930be7Sderaadt /* 5df930be7Sderaadt * Copyright (c) 1995 Adam Glass, Gordon Ross 6df930be7Sderaadt * All rights reserved. 7df930be7Sderaadt * 8df930be7Sderaadt * Redistribution and use in source and binary forms, with or without 9df930be7Sderaadt * modification, are permitted provided that the following conditions 10df930be7Sderaadt * are met: 11df930be7Sderaadt * 1. Redistributions of source code must retain the above copyright 12df930be7Sderaadt * notice, this list of conditions and the following disclaimer. 13df930be7Sderaadt * 2. Redistributions in binary form must reproduce the above copyright 14df930be7Sderaadt * notice, this list of conditions and the following disclaimer in the 15df930be7Sderaadt * documentation and/or other materials provided with the distribution. 16df930be7Sderaadt * 3. The name of the authors may not be used to endorse or promote products 17df930be7Sderaadt * derived from this software without specific prior written permission. 18df930be7Sderaadt * 19df930be7Sderaadt * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 20df930be7Sderaadt * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21df930be7Sderaadt * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22df930be7Sderaadt * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 23df930be7Sderaadt * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24df930be7Sderaadt * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25df930be7Sderaadt * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26df930be7Sderaadt * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27df930be7Sderaadt * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28df930be7Sderaadt * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29df930be7Sderaadt */ 30df930be7Sderaadt 31df930be7Sderaadt #include <sys/param.h> 32df930be7Sderaadt #include <sys/systm.h> 33df930be7Sderaadt #include <sys/kernel.h> 34df930be7Sderaadt #include <sys/conf.h> 35df930be7Sderaadt #include <sys/ioctl.h> 36df930be7Sderaadt #include <sys/proc.h> 37df930be7Sderaadt #include <sys/mount.h> 38df930be7Sderaadt #include <sys/mbuf.h> 39df930be7Sderaadt #include <sys/reboot.h> 40df930be7Sderaadt #include <sys/socket.h> 41df930be7Sderaadt #include <sys/socketvar.h> 42df930be7Sderaadt 43df930be7Sderaadt #include <net/if.h> 44df930be7Sderaadt #include <net/route.h> 45df930be7Sderaadt 46df930be7Sderaadt #include <netinet/in.h> 47df930be7Sderaadt #include <netinet/if_ether.h> 48df930be7Sderaadt 49df930be7Sderaadt #include <nfs/rpcv2.h> 5078530d46Smickey #include <nfs/nfsproto.h> 51df930be7Sderaadt #include <nfs/nfs.h> 52df930be7Sderaadt #include <nfs/nfsdiskless.h> 53df930be7Sderaadt #include <nfs/krpc.h> 54df930be7Sderaadt #include <nfs/xdr_subs.h> 55370decb4Sniklas #include <nfs/nfs_var.h> 56df930be7Sderaadt 57*ddde6caeSderaadt #include "ether.h" 58df930be7Sderaadt 59*ddde6caeSderaadt #if !defined(NFSCLIENT) || (NETHER == 0 && NFDDI == 0) 60*ddde6caeSderaadt 61*ddde6caeSderaadt int 62*ddde6caeSderaadt nfs_boot_init(nd, procp) 63df930be7Sderaadt struct nfs_diskless *nd; 64df930be7Sderaadt struct proc *procp; 65df930be7Sderaadt { 66a0bbd24dSbriggs panic("nfs_boot_init: NFSCLIENT not enabled in kernel"); 67df930be7Sderaadt } 68df930be7Sderaadt 6978530d46Smickey void 7078530d46Smickey nfs_boot_getfh(bpsin, key, ndmntp) 7178530d46Smickey struct sockaddr_in *bpsin; 7278530d46Smickey char *key; 7378530d46Smickey struct nfs_dlmount *ndmntp; 7478530d46Smickey { 7578530d46Smickey /* can not get here */ 7678530d46Smickey } 7778530d46Smickey 78*ddde6caeSderaadt #else 79df930be7Sderaadt 80df930be7Sderaadt /* 81df930be7Sderaadt * Support for NFS diskless booting, specifically getting information 82df930be7Sderaadt * about where to boot from, what pathnames, etc. 83df930be7Sderaadt * 84df930be7Sderaadt * This implememtation uses RARP and the bootparam RPC. 85df930be7Sderaadt * We are forced to implement RPC anyway (to get file handles) 86df930be7Sderaadt * so we might as well take advantage of it for bootparam too. 87df930be7Sderaadt * 88df930be7Sderaadt * The diskless boot sequence goes as follows: 89df930be7Sderaadt * (1) Use RARP to get our interface address 90df930be7Sderaadt * (2) Use RPC/bootparam/whoami to get our hostname, 91df930be7Sderaadt * our IP address, and the server's IP address. 92df930be7Sderaadt * (3) Use RPC/bootparam/getfile to get the root path 93df930be7Sderaadt * (4) Use RPC/mountd to get the root file handle 94df930be7Sderaadt * (5) Use RPC/bootparam/getfile to get the swap path 95df930be7Sderaadt * (6) Use RPC/mountd to get the swap file handle 96df930be7Sderaadt * 97df930be7Sderaadt * (This happens to be the way Sun does it too.) 98df930be7Sderaadt */ 99df930be7Sderaadt 100df930be7Sderaadt /* bootparam RPC */ 101df930be7Sderaadt static int bp_whoami __P((struct sockaddr_in *bpsin, 102df930be7Sderaadt struct in_addr *my_ip, struct in_addr *gw_ip)); 103df930be7Sderaadt static int bp_getfile __P((struct sockaddr_in *bpsin, char *key, 104df930be7Sderaadt struct sockaddr_in *mdsin, char *servname, char *path)); 105df930be7Sderaadt 106df930be7Sderaadt /* mountd RPC */ 107df930be7Sderaadt static int md_mount __P((struct sockaddr_in *mdsin, char *path, 108df930be7Sderaadt u_char *fh)); 109df930be7Sderaadt 110df930be7Sderaadt char *nfsbootdevname; 111df930be7Sderaadt 112df930be7Sderaadt /* 113df930be7Sderaadt * Called with an empty nfs_diskless struct to be filled in. 114df930be7Sderaadt */ 115df930be7Sderaadt int 116df930be7Sderaadt nfs_boot_init(nd, procp) 117df930be7Sderaadt struct nfs_diskless *nd; 118df930be7Sderaadt struct proc *procp; 119df930be7Sderaadt { 120df930be7Sderaadt struct ifreq ireq; 121df930be7Sderaadt struct in_addr my_ip, gw_ip; 122df930be7Sderaadt struct sockaddr_in bp_sin; 123df930be7Sderaadt struct sockaddr_in *sin; 124df930be7Sderaadt struct ifnet *ifp; 125df930be7Sderaadt struct socket *so; 126df930be7Sderaadt int error; 127df930be7Sderaadt 128df930be7Sderaadt /* 129df930be7Sderaadt * Find an interface, rarp for its ip address, stuff it, the 130df930be7Sderaadt * implied broadcast addr, and netmask into a nfs_diskless struct. 131df930be7Sderaadt * 132df930be7Sderaadt * This was moved here from nfs_vfsops.c because this procedure 133df930be7Sderaadt * would be quite different if someone decides to write (i.e.) a 134df930be7Sderaadt * BOOTP version of this file (might not use RARP, etc.) 135df930be7Sderaadt */ 136df930be7Sderaadt 137df930be7Sderaadt /* 138df930be7Sderaadt * Find a network interface. 139df930be7Sderaadt */ 140df930be7Sderaadt if (nfsbootdevname) 141df930be7Sderaadt ifp = ifunit(nfsbootdevname); 142df930be7Sderaadt else 143df930be7Sderaadt for (ifp = ifnet.tqh_first; ifp != 0; ifp = ifp->if_list.tqe_next) 144df930be7Sderaadt if ((ifp->if_flags & 145df930be7Sderaadt (IFF_LOOPBACK|IFF_POINTOPOINT)) == 0) 146df930be7Sderaadt break; 147df930be7Sderaadt if (ifp == NULL) 148df930be7Sderaadt panic("nfs_boot: no suitable interface"); 14909d901c0Sderaadt bcopy(ifp->if_xname, ireq.ifr_name, IFNAMSIZ); 150df930be7Sderaadt printf("nfs_boot: using network interface '%s'\n", 151df930be7Sderaadt ireq.ifr_name); 152df930be7Sderaadt 153df930be7Sderaadt /* 154df930be7Sderaadt * Bring up the interface. 155df930be7Sderaadt * 156df930be7Sderaadt * Get the old interface flags and or IFF_UP into them; if 157df930be7Sderaadt * IFF_UP set blindly, interface selection can be clobbered. 158df930be7Sderaadt */ 159df930be7Sderaadt if ((error = socreate(AF_INET, &so, SOCK_DGRAM, 0)) != 0) 160df930be7Sderaadt panic("nfs_boot: socreate, error=%d", error); 161df930be7Sderaadt error = ifioctl(so, SIOCGIFFLAGS, (caddr_t)&ireq, procp); 162df930be7Sderaadt if (error) 163df930be7Sderaadt panic("nfs_boot: GIFFLAGS, error=%d", error); 164df930be7Sderaadt ireq.ifr_flags |= IFF_UP; 165df930be7Sderaadt error = ifioctl(so, SIOCSIFFLAGS, (caddr_t)&ireq, procp); 166df930be7Sderaadt if (error) 167df930be7Sderaadt panic("nfs_boot: SIFFLAGS, error=%d", error); 168df930be7Sderaadt 169df930be7Sderaadt /* 170df930be7Sderaadt * Do RARP for the interface address. 171df930be7Sderaadt */ 172df930be7Sderaadt if ((error = revarpwhoami(&my_ip, ifp)) != 0) 173df930be7Sderaadt panic("revarp failed, error=%d", error); 17478530d46Smickey printf("nfs_boot: client_addr=0x%x\n", (u_int32_t)ntohl(my_ip.s_addr)); 175df930be7Sderaadt 176df930be7Sderaadt /* 177df930be7Sderaadt * Do enough of ifconfig(8) so that the chosen interface 178df930be7Sderaadt * can talk to the servers. (just set the address) 179df930be7Sderaadt */ 180df930be7Sderaadt sin = (struct sockaddr_in *)&ireq.ifr_addr; 181df930be7Sderaadt bzero((caddr_t)sin, sizeof(*sin)); 182df930be7Sderaadt sin->sin_len = sizeof(*sin); 183df930be7Sderaadt sin->sin_family = AF_INET; 184df930be7Sderaadt sin->sin_addr.s_addr = my_ip.s_addr; 185df930be7Sderaadt error = ifioctl(so, SIOCSIFADDR, (caddr_t)&ireq, procp); 186df930be7Sderaadt if (error) 187df930be7Sderaadt panic("nfs_boot: set if addr, error=%d", error); 188df930be7Sderaadt 189df930be7Sderaadt soclose(so); 190df930be7Sderaadt 191df930be7Sderaadt /* 192df930be7Sderaadt * Get client name and gateway address. 193df930be7Sderaadt * RPC: bootparam/whoami 194df930be7Sderaadt * Use the old broadcast address for the WHOAMI 195df930be7Sderaadt * call because we do not yet know our netmask. 196df930be7Sderaadt * The server address returned by the WHOAMI call 197df930be7Sderaadt * is used for all subsequent booptaram RPCs. 198df930be7Sderaadt */ 199df930be7Sderaadt bzero((caddr_t)&bp_sin, sizeof(bp_sin)); 200df930be7Sderaadt bp_sin.sin_len = sizeof(bp_sin); 201df930be7Sderaadt bp_sin.sin_family = AF_INET; 202df930be7Sderaadt bp_sin.sin_addr.s_addr = INADDR_BROADCAST; 203df930be7Sderaadt hostnamelen = MAXHOSTNAMELEN; 204df930be7Sderaadt 205df930be7Sderaadt /* this returns gateway IP address */ 206df930be7Sderaadt error = bp_whoami(&bp_sin, &my_ip, &gw_ip); 207df930be7Sderaadt if (error) 208df930be7Sderaadt panic("nfs_boot: bootparam whoami, error=%d", error); 209df930be7Sderaadt printf("nfs_boot: server_addr=0x%x\n", 21078530d46Smickey (u_int32_t)ntohl(bp_sin.sin_addr.s_addr)); 211df930be7Sderaadt printf("nfs_boot: hostname=%s\n", hostname); 212df930be7Sderaadt 213df930be7Sderaadt #ifdef NFS_BOOT_GATEWAY 214df930be7Sderaadt /* 215df930be7Sderaadt * XXX - This code is conditionally compiled only because 216df930be7Sderaadt * many bootparam servers (in particular, SunOS 4.1.3) 217df930be7Sderaadt * always set the gateway address to their own address. 218df930be7Sderaadt * The bootparam server is not necessarily the gateway. 219df930be7Sderaadt * We could just believe the server, and at worst you would 220df930be7Sderaadt * need to delete the incorrect default route before adding 221df930be7Sderaadt * the correct one, but for simplicity, ignore the gateway. 222df930be7Sderaadt * If your server is OK, you can turn on this option. 223df930be7Sderaadt * 224df930be7Sderaadt * If the gateway address is set, add a default route. 225df930be7Sderaadt * (The mountd RPCs may go across a gateway.) 226df930be7Sderaadt */ 227df930be7Sderaadt if (gw_ip.s_addr) { 228df930be7Sderaadt struct sockaddr dst, gw, mask; 229df930be7Sderaadt /* Destination: (default) */ 230df930be7Sderaadt bzero((caddr_t)&dst, sizeof(dst)); 231df930be7Sderaadt dst.sa_len = sizeof(dst); 232df930be7Sderaadt dst.sa_family = AF_INET; 233df930be7Sderaadt /* Gateway: */ 234df930be7Sderaadt bzero((caddr_t)&gw, sizeof(gw)); 235df930be7Sderaadt sin = (struct sockaddr_in *)&gw; 236df930be7Sderaadt sin->sin_len = sizeof(gw); 237df930be7Sderaadt sin->sin_family = AF_INET; 238df930be7Sderaadt sin->sin_addr.s_addr = gw_ip.s_addr; 239df930be7Sderaadt /* Mask: (zero length) */ 240df930be7Sderaadt bzero(&mask, sizeof(mask)); 241df930be7Sderaadt 242df930be7Sderaadt printf("nfs_boot: gateway=0x%x\n", ntohl(gw_ip.s_addr)); 243df930be7Sderaadt /* add, dest, gw, mask, flags, 0 */ 244df930be7Sderaadt error = rtrequest(RTM_ADD, &dst, (struct sockaddr *)&gw, 245df930be7Sderaadt &mask, (RTF_UP | RTF_GATEWAY | RTF_STATIC), NULL); 246df930be7Sderaadt if (error) 247df930be7Sderaadt printf("nfs_boot: add route, error=%d\n", error); 248df930be7Sderaadt } 249df930be7Sderaadt #endif 250df930be7Sderaadt 251370decb4Sniklas bcopy(&bp_sin, &nd->nd_boot, sizeof(bp_sin)); 252df930be7Sderaadt 253df930be7Sderaadt return (0); 254df930be7Sderaadt } 255df930be7Sderaadt 256370decb4Sniklas void 257370decb4Sniklas nfs_boot_getfh(bpsin, key, ndmntp) 258df930be7Sderaadt struct sockaddr_in *bpsin; /* bootparam server */ 259df930be7Sderaadt char *key; /* root or swap */ 260df930be7Sderaadt struct nfs_dlmount *ndmntp; /* output */ 261df930be7Sderaadt { 262df930be7Sderaadt char pathname[MAXPATHLEN]; 263df930be7Sderaadt char *sp, *dp, *endp; 264370decb4Sniklas struct sockaddr_in *sin; 265df930be7Sderaadt int error; 266df930be7Sderaadt 267370decb4Sniklas sin = &ndmntp->ndm_saddr; 268370decb4Sniklas 269df930be7Sderaadt /* 270df930be7Sderaadt * Get server:pathname for "key" (root or swap) 271df930be7Sderaadt * using RPC to bootparam/getfile 272df930be7Sderaadt */ 27378530d46Smickey error = bp_getfile(bpsin, key, sin, ndmntp->ndm_host, pathname); 274df930be7Sderaadt if (error) 275df930be7Sderaadt panic("nfs_boot: bootparam get %s: %d", key, error); 276df930be7Sderaadt 277df930be7Sderaadt /* 278df930be7Sderaadt * Get file handle for "key" (root or swap) 279df930be7Sderaadt * using RPC to mountd/mount 280df930be7Sderaadt */ 281370decb4Sniklas error = md_mount(sin, pathname, ndmntp->ndm_fh); 282df930be7Sderaadt if (error) 283df930be7Sderaadt panic("nfs_boot: mountd %s, error=%d", key, error); 284df930be7Sderaadt 285370decb4Sniklas /* Set port number for NFS use. */ 286370decb4Sniklas /* XXX: NFS port is always 2049, right? */ 287370decb4Sniklas error = krpc_portmap(sin, NFS_PROG, NFS_VER2, &sin->sin_port); 288370decb4Sniklas if (error) 289370decb4Sniklas panic("nfs_boot: portmap NFS/v2, error=%d", error); 290370decb4Sniklas 291df930be7Sderaadt /* Construct remote path (for getmntinfo(3)) */ 292df930be7Sderaadt dp = ndmntp->ndm_host; 293df930be7Sderaadt endp = dp + MNAMELEN - 1; 294df930be7Sderaadt dp += strlen(dp); 295df930be7Sderaadt *dp++ = ':'; 296df930be7Sderaadt for (sp = pathname; *sp && dp < endp;) 297df930be7Sderaadt *dp++ = *sp++; 298df930be7Sderaadt *dp = '\0'; 299df930be7Sderaadt 300df930be7Sderaadt } 301df930be7Sderaadt 302df930be7Sderaadt 303df930be7Sderaadt /* 304df930be7Sderaadt * RPC: bootparam/whoami 305df930be7Sderaadt * Given client IP address, get: 306df930be7Sderaadt * client name (hostname) 307df930be7Sderaadt * domain name (domainname) 308df930be7Sderaadt * gateway address 309df930be7Sderaadt * 310df930be7Sderaadt * The hostname and domainname are set here for convenience. 311df930be7Sderaadt * 312df930be7Sderaadt * Note - bpsin is initialized to the broadcast address, 313df930be7Sderaadt * and will be replaced with the bootparam server address 314df930be7Sderaadt * after this call is complete. Have to use PMAP_PROC_CALL 315df930be7Sderaadt * to make sure we get responses only from a servers that 316df930be7Sderaadt * know about us (don't want to broadcast a getport call). 317df930be7Sderaadt */ 318df930be7Sderaadt static int 319df930be7Sderaadt bp_whoami(bpsin, my_ip, gw_ip) 320df930be7Sderaadt struct sockaddr_in *bpsin; 321df930be7Sderaadt struct in_addr *my_ip; 322df930be7Sderaadt struct in_addr *gw_ip; 323df930be7Sderaadt { 324df930be7Sderaadt /* RPC structures for PMAPPROC_CALLIT */ 325df930be7Sderaadt struct whoami_call { 326df930be7Sderaadt u_int32_t call_prog; 327df930be7Sderaadt u_int32_t call_vers; 328df930be7Sderaadt u_int32_t call_proc; 329df930be7Sderaadt u_int32_t call_arglen; 330df930be7Sderaadt } *call; 331df930be7Sderaadt struct callit_reply { 332df930be7Sderaadt u_int32_t port; 333df930be7Sderaadt u_int32_t encap_len; 334df930be7Sderaadt /* encapsulated data here */ 335df930be7Sderaadt } *reply; 336df930be7Sderaadt 337df930be7Sderaadt struct mbuf *m, *from; 338df930be7Sderaadt struct sockaddr_in *sin; 339df930be7Sderaadt int error, msg_len; 340df930be7Sderaadt int16_t port; 341df930be7Sderaadt 342df930be7Sderaadt /* 343df930be7Sderaadt * Build request message for PMAPPROC_CALLIT. 344df930be7Sderaadt */ 345df930be7Sderaadt m = m_get(M_WAIT, MT_DATA); 346df930be7Sderaadt call = mtod(m, struct whoami_call *); 347df930be7Sderaadt m->m_len = sizeof(*call); 348df930be7Sderaadt call->call_prog = txdr_unsigned(BOOTPARAM_PROG); 349df930be7Sderaadt call->call_vers = txdr_unsigned(BOOTPARAM_VERS); 350df930be7Sderaadt call->call_proc = txdr_unsigned(BOOTPARAM_WHOAMI); 351df930be7Sderaadt 352df930be7Sderaadt /* 353df930be7Sderaadt * append encapsulated data (client IP address) 354df930be7Sderaadt */ 355df930be7Sderaadt m->m_next = xdr_inaddr_encode(my_ip); 356df930be7Sderaadt call->call_arglen = txdr_unsigned(m->m_next->m_len); 357df930be7Sderaadt 358df930be7Sderaadt /* RPC: portmap/callit */ 359df930be7Sderaadt bpsin->sin_port = htons(PMAPPORT); 360df930be7Sderaadt from = NULL; 361df930be7Sderaadt error = krpc_call(bpsin, PMAPPROG, PMAPVERS, 362df930be7Sderaadt PMAPPROC_CALLIT, &m, &from); 363df930be7Sderaadt if (error) 364df930be7Sderaadt return error; 365df930be7Sderaadt 366df930be7Sderaadt /* 367df930be7Sderaadt * Parse result message. 368df930be7Sderaadt */ 369df930be7Sderaadt if (m->m_len < sizeof(*reply)) { 370df930be7Sderaadt m = m_pullup(m, sizeof(*reply)); 371df930be7Sderaadt if (m == NULL) 372df930be7Sderaadt goto bad; 373df930be7Sderaadt } 374df930be7Sderaadt reply = mtod(m, struct callit_reply *); 375df930be7Sderaadt port = fxdr_unsigned(u_int32_t, reply->port); 376df930be7Sderaadt msg_len = fxdr_unsigned(u_int32_t, reply->encap_len); 377df930be7Sderaadt m_adj(m, sizeof(*reply)); 378df930be7Sderaadt 379df930be7Sderaadt /* 380df930be7Sderaadt * Save bootparam server address 381df930be7Sderaadt */ 382df930be7Sderaadt sin = mtod(from, struct sockaddr_in *); 383df930be7Sderaadt bpsin->sin_port = htons(port); 384df930be7Sderaadt bpsin->sin_addr.s_addr = sin->sin_addr.s_addr; 385df930be7Sderaadt 386df930be7Sderaadt /* client name */ 387df930be7Sderaadt hostnamelen = MAXHOSTNAMELEN-1; 388df930be7Sderaadt m = xdr_string_decode(m, hostname, &hostnamelen); 389df930be7Sderaadt if (m == NULL) 390df930be7Sderaadt goto bad; 391df930be7Sderaadt 392df930be7Sderaadt /* domain name */ 393df930be7Sderaadt domainnamelen = MAXHOSTNAMELEN-1; 394df930be7Sderaadt m = xdr_string_decode(m, domainname, &domainnamelen); 395df930be7Sderaadt if (m == NULL) 396df930be7Sderaadt goto bad; 397df930be7Sderaadt 398df930be7Sderaadt /* gateway address */ 399df930be7Sderaadt m = xdr_inaddr_decode(m, gw_ip); 400df930be7Sderaadt if (m == NULL) 401df930be7Sderaadt goto bad; 402df930be7Sderaadt 403df930be7Sderaadt /* success */ 404df930be7Sderaadt goto out; 405df930be7Sderaadt 406df930be7Sderaadt bad: 407df930be7Sderaadt printf("nfs_boot: bootparam_whoami: bad reply\n"); 408df930be7Sderaadt error = EBADRPC; 409df930be7Sderaadt 410df930be7Sderaadt out: 411df930be7Sderaadt if (from) 412df930be7Sderaadt m_freem(from); 413df930be7Sderaadt if (m) 414df930be7Sderaadt m_freem(m); 415df930be7Sderaadt return(error); 416df930be7Sderaadt } 417df930be7Sderaadt 418df930be7Sderaadt 419df930be7Sderaadt /* 420df930be7Sderaadt * RPC: bootparam/getfile 421df930be7Sderaadt * Given client name and file "key", get: 422df930be7Sderaadt * server name 423df930be7Sderaadt * server IP address 424df930be7Sderaadt * server pathname 425df930be7Sderaadt */ 426df930be7Sderaadt static int 427df930be7Sderaadt bp_getfile(bpsin, key, md_sin, serv_name, pathname) 428df930be7Sderaadt struct sockaddr_in *bpsin; 429df930be7Sderaadt char *key; 430df930be7Sderaadt struct sockaddr_in *md_sin; 431df930be7Sderaadt char *serv_name; 432df930be7Sderaadt char *pathname; 433df930be7Sderaadt { 434df930be7Sderaadt struct mbuf *m; 435df930be7Sderaadt struct sockaddr_in *sin; 436df930be7Sderaadt struct in_addr inaddr; 437df930be7Sderaadt int error, sn_len, path_len; 438df930be7Sderaadt 439df930be7Sderaadt /* 440df930be7Sderaadt * Build request message. 441df930be7Sderaadt */ 442df930be7Sderaadt 443df930be7Sderaadt /* client name (hostname) */ 444df930be7Sderaadt m = xdr_string_encode(hostname, hostnamelen); 445370decb4Sniklas if (m == NULL) 446370decb4Sniklas return (ENOMEM); 447df930be7Sderaadt 448df930be7Sderaadt /* key name (root or swap) */ 449df930be7Sderaadt m->m_next = xdr_string_encode(key, strlen(key)); 450370decb4Sniklas if (m->m_next == NULL) 451370decb4Sniklas return (ENOMEM); 452df930be7Sderaadt 453df930be7Sderaadt /* RPC: bootparam/getfile */ 454df930be7Sderaadt error = krpc_call(bpsin, BOOTPARAM_PROG, BOOTPARAM_VERS, 455df930be7Sderaadt BOOTPARAM_GETFILE, &m, NULL); 456df930be7Sderaadt if (error) 457df930be7Sderaadt return error; 458df930be7Sderaadt 459df930be7Sderaadt /* 460df930be7Sderaadt * Parse result message. 461df930be7Sderaadt */ 462df930be7Sderaadt 463df930be7Sderaadt /* server name */ 464df930be7Sderaadt sn_len = MNAMELEN-1; 465df930be7Sderaadt m = xdr_string_decode(m, serv_name, &sn_len); 466df930be7Sderaadt if (m == NULL) 467df930be7Sderaadt goto bad; 468df930be7Sderaadt 469df930be7Sderaadt /* server IP address (mountd/NFS) */ 470df930be7Sderaadt m = xdr_inaddr_decode(m, &inaddr); 471df930be7Sderaadt if (m == NULL) 472df930be7Sderaadt goto bad; 473df930be7Sderaadt 474df930be7Sderaadt /* server pathname */ 475df930be7Sderaadt path_len = MAXPATHLEN-1; 476df930be7Sderaadt m = xdr_string_decode(m, pathname, &path_len); 477df930be7Sderaadt if (m == NULL) 478df930be7Sderaadt goto bad; 479df930be7Sderaadt 480df930be7Sderaadt /* setup server socket address */ 481df930be7Sderaadt sin = md_sin; 482df930be7Sderaadt bzero((caddr_t)sin, sizeof(*sin)); 483df930be7Sderaadt sin->sin_len = sizeof(*sin); 484df930be7Sderaadt sin->sin_family = AF_INET; 485df930be7Sderaadt sin->sin_addr = inaddr; 486df930be7Sderaadt 487df930be7Sderaadt /* success */ 488df930be7Sderaadt goto out; 489df930be7Sderaadt 490df930be7Sderaadt bad: 491df930be7Sderaadt printf("nfs_boot: bootparam_getfile: bad reply\n"); 492df930be7Sderaadt error = EBADRPC; 493df930be7Sderaadt 494df930be7Sderaadt out: 495df930be7Sderaadt m_freem(m); 496df930be7Sderaadt return(0); 497df930be7Sderaadt } 498df930be7Sderaadt 499df930be7Sderaadt 500df930be7Sderaadt /* 501df930be7Sderaadt * RPC: mountd/mount 502df930be7Sderaadt * Given a server pathname, get an NFS file handle. 503df930be7Sderaadt * Also, sets sin->sin_port to the NFS service port. 504df930be7Sderaadt */ 505df930be7Sderaadt static int 506df930be7Sderaadt md_mount(mdsin, path, fhp) 507df930be7Sderaadt struct sockaddr_in *mdsin; /* mountd server address */ 508df930be7Sderaadt char *path; 509df930be7Sderaadt u_char *fhp; 510df930be7Sderaadt { 511df930be7Sderaadt /* The RPC structures */ 512df930be7Sderaadt struct rdata { 513df930be7Sderaadt u_int32_t errno; 51478530d46Smickey u_int8_t fh[NFSX_V2FH]; 515df930be7Sderaadt } *rdata; 516df930be7Sderaadt struct mbuf *m; 517df930be7Sderaadt int error; 518df930be7Sderaadt 519df930be7Sderaadt /* Get port number for MOUNTD. */ 520df930be7Sderaadt error = krpc_portmap(mdsin, RPCPROG_MNT, RPCMNT_VER1, 521df930be7Sderaadt &mdsin->sin_port); 522df930be7Sderaadt if (error) return error; 523df930be7Sderaadt 524df930be7Sderaadt m = xdr_string_encode(path, strlen(path)); 525370decb4Sniklas if (m == NULL) 52678530d46Smickey return ENOMEM; 527df930be7Sderaadt 528df930be7Sderaadt /* Do RPC to mountd. */ 529df930be7Sderaadt error = krpc_call(mdsin, RPCPROG_MNT, RPCMNT_VER1, 530df930be7Sderaadt RPCMNT_MOUNT, &m, NULL); 531df930be7Sderaadt if (error) 532df930be7Sderaadt return error; /* message already freed */ 533df930be7Sderaadt 534370decb4Sniklas /* The reply might have only the errno. */ 535370decb4Sniklas if (m->m_len < 4) 536370decb4Sniklas goto bad; 537370decb4Sniklas /* Have at least errno, so check that. */ 538370decb4Sniklas rdata = mtod(m, struct rdata *); 539370decb4Sniklas error = fxdr_unsigned(u_int32_t, rdata->errno); 540370decb4Sniklas if (error) 541370decb4Sniklas goto out; 542370decb4Sniklas 543370decb4Sniklas /* Have errno==0, so the fh must be there. */ 544df930be7Sderaadt if (m->m_len < sizeof(*rdata)) { 545df930be7Sderaadt m = m_pullup(m, sizeof(*rdata)); 546df930be7Sderaadt if (m == NULL) 547df930be7Sderaadt goto bad; 548df930be7Sderaadt rdata = mtod(m, struct rdata *); 549370decb4Sniklas } 55078530d46Smickey bcopy(rdata->fh, fhp, NFSX_V2FH); 551df930be7Sderaadt goto out; 552df930be7Sderaadt 553df930be7Sderaadt bad: 554df930be7Sderaadt error = EBADRPC; 555df930be7Sderaadt 556df930be7Sderaadt out: 557df930be7Sderaadt m_freem(m); 558df930be7Sderaadt return error; 559df930be7Sderaadt } 560df930be7Sderaadt 561f3f6cb75Sbriggs #endif /* ifdef NFSCLIENT */ 562