2 * NFS support driver - based on etherboot and U-BOOT's tftp.c
4 * Masami Komiya <mkomiya@sonare.it> 2004
8 /* NOTE: the NFS code is heavily inspired by the NetBSD netboot code (read:
9 * large portions are copied verbatim) as distributed in OSKit 0.97. A few
10 * changes were necessary to adapt the code to Etherboot and to fix several
11 * inconsistencies. Also the RPC message preparation is done "by hand" to
12 * avoid adding netsprintf() which I find hard to understand and use. */
14 /* NOTE 2: Etherboot does not care about things beyond the kernel image, so
15 * it loads the kernel image off the boot server (ARP_SERVER) and does not
16 * access the client root disk (root-path in dhcpd.conf), which would use
17 * ARP_ROOTSERVER. The root disk is something the operating system we are
18 * about to load needs to use. This is different from the OSKit 0.97 logic. */
20 /* NOTE 3: Symlink handling introduced by Anselm M Hoffmeister, 2003-July-14
21 * If a symlink is encountered, it is followed as far as possible (recursion
22 * possible, maximum 16 steps). There is no clearing of ".."'s inside the
23 * path, so please DON'T DO THAT. thx. */
25 /* NOTE 4: NFSv3 support added by Guillaume GARDET, 2016-June-20.
26 * NFSv2 is still used by default. But if server does not support NFSv2, then
27 * NFSv3 is used, if available on NFS server. */
39 #define HASHES_PER_LINE 65 /* Number of "loading" hashes per line */
40 #define NFS_RETRY_COUNT 30
41 #ifndef CONFIG_NFS_TIMEOUT
42 # define NFS_TIMEOUT 2000UL
44 # define NFS_TIMEOUT CONFIG_NFS_TIMEOUT
48 #define NFS_RPC_DROP 124
50 static int fs_mounted;
51 static unsigned long rpc_id;
52 static int nfs_offset = -1;
54 static ulong nfs_timeout = NFS_TIMEOUT;
56 static char dirfh[NFS_FHSIZE]; /* NFSv2 / NFSv3 file handle of directory */
57 static char filefh[NFS3_FHSIZE]; /* NFSv2 / NFSv3 file handle */
58 static int filefh3_length; /* (variable) length of filefh when NFSv3 */
60 static enum net_loop_state nfs_download_state;
61 static struct in_addr nfs_server_ip;
62 static int nfs_server_mount_port;
63 static int nfs_server_port;
64 static int nfs_our_port;
65 static int nfs_timeout_count;
67 #define STATE_PRCLOOKUP_PROG_MOUNT_REQ 1
68 #define STATE_PRCLOOKUP_PROG_NFS_REQ 2
69 #define STATE_MOUNT_REQ 3
70 #define STATE_UMOUNT_REQ 4
71 #define STATE_LOOKUP_REQ 5
72 #define STATE_READ_REQ 6
73 #define STATE_READLINK_REQ 7
75 static char *nfs_filename;
76 static char *nfs_path;
77 static char nfs_path_buff[2048];
80 #define NFSV3_FLAG 1 << 1
81 static char supported_nfs_versions = NFSV2_FLAG | NFSV3_FLAG;
83 static inline int store_block(uchar *src, unsigned offset, unsigned len)
85 ulong newsize = offset + len;
86 #ifdef CONFIG_SYS_DIRECT_FLASH_NFS
89 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
90 /* start address in flash? */
91 if (load_addr + offset >= flash_info[i].start[0]) {
97 if (rc) { /* Flash is destination for this packet */
98 rc = flash_write((uchar *)src, (ulong)(load_addr+offset), len);
104 #endif /* CONFIG_SYS_DIRECT_FLASH_NFS */
106 void *ptr = map_sysmem(load_addr + offset, len);
108 memcpy(ptr, src, len);
112 if (net_boot_file_size < (offset + len))
113 net_boot_file_size = newsize;
117 static char *basename(char *path)
121 fname = path + strlen(path) - 1;
122 while (fname >= path) {
132 static char *dirname(char *path)
136 fname = basename(path);
142 /**************************************************************************
143 RPC_ADD_CREDENTIALS - Add RPC authentication/verifier entries
144 **************************************************************************/
145 static uint32_t *rpc_add_credentials(uint32_t *p)
147 /* Here's the executive summary on authentication requirements of the
148 * various NFS server implementations: Linux accepts both AUTH_NONE
149 * and AUTH_UNIX authentication (also accepts an empty hostname field
150 * in the AUTH_UNIX scheme). *BSD refuses AUTH_NONE, but accepts
151 * AUTH_UNIX (also accepts an empty hostname field in the AUTH_UNIX
152 * scheme). To be safe, use AUTH_UNIX and pass the hostname if we have
153 * it (if the BOOTP/DHCP reply didn't give one, just use an empty
156 /* Provide an AUTH_UNIX credential. */
157 *p++ = htonl(1); /* AUTH_UNIX */
158 *p++ = htonl(20); /* auth length */
159 *p++ = 0; /* stamp */
160 *p++ = 0; /* hostname string */
163 *p++ = 0; /* auxiliary gid list */
165 /* Provide an AUTH_NONE verifier. */
166 *p++ = 0; /* AUTH_NONE */
167 *p++ = 0; /* auth length */
172 /**************************************************************************
173 RPC_LOOKUP - Lookup RPC Port numbers
174 **************************************************************************/
175 static void rpc_req(int rpc_prog, int rpc_proc, uint32_t *data, int datalen)
177 struct rpc_t rpc_pkt;
184 rpc_pkt.u.call.id = htonl(id);
185 rpc_pkt.u.call.type = htonl(MSG_CALL);
186 rpc_pkt.u.call.rpcvers = htonl(2); /* use RPC version 2 */
187 rpc_pkt.u.call.prog = htonl(rpc_prog);
190 if (supported_nfs_versions & NFSV2_FLAG)
191 rpc_pkt.u.call.vers = htonl(2); /* NFS v2 */
192 else /* NFSV3_FLAG */
193 rpc_pkt.u.call.vers = htonl(3); /* NFS v3 */
198 rpc_pkt.u.call.vers = htonl(2); /* portmapper is version 2 */
200 rpc_pkt.u.call.proc = htonl(rpc_proc);
201 p = rpc_pkt.u.call.data;
204 memcpy(p, data, datalen * sizeof(uint32_t));
206 pktlen = (char *)p + datalen * sizeof(uint32_t) - (char *)&rpc_pkt;
208 memcpy((char *)net_tx_packet + net_eth_hdr_size() + IP_UDP_HDR_SIZE,
209 &rpc_pkt.u.data[0], pktlen);
211 if (rpc_prog == PROG_PORTMAP)
213 else if (rpc_prog == PROG_MOUNT)
214 sport = nfs_server_mount_port;
216 sport = nfs_server_port;
218 net_send_udp_packet(net_server_ethaddr, nfs_server_ip, sport,
219 nfs_our_port, pktlen);
222 /**************************************************************************
223 RPC_LOOKUP - Lookup RPC Port numbers
224 **************************************************************************/
225 static void rpc_lookup_req(int prog, int ver)
229 data[0] = 0; data[1] = 0; /* auth credential */
230 data[2] = 0; data[3] = 0; /* auth verifier */
231 data[4] = htonl(prog);
232 data[5] = htonl(ver);
233 data[6] = htonl(17); /* IP_UDP */
235 rpc_req(PROG_PORTMAP, PORTMAP_GETPORT, data, 8);
238 /**************************************************************************
239 NFS_MOUNT - Mount an NFS Filesystem
240 **************************************************************************/
241 static void nfs_mount_req(char *path)
248 pathlen = strlen(path);
251 p = rpc_add_credentials(p);
253 *p++ = htonl(pathlen);
255 *(p + pathlen / 4) = 0;
256 memcpy(p, path, pathlen);
257 p += (pathlen + 3) / 4;
259 len = (uint32_t *)p - (uint32_t *)&(data[0]);
261 rpc_req(PROG_MOUNT, MOUNT_ADDENTRY, data, len);
264 /**************************************************************************
265 NFS_UMOUNTALL - Unmount all our NFS Filesystems on the Server
266 **************************************************************************/
267 static void nfs_umountall_req(void)
273 if ((nfs_server_mount_port == -1) || (!fs_mounted))
274 /* Nothing mounted, nothing to umount */
278 p = rpc_add_credentials(p);
280 len = (uint32_t *)p - (uint32_t *)&(data[0]);
282 rpc_req(PROG_MOUNT, MOUNT_UMOUNTALL, data, len);
285 /***************************************************************************
286 * NFS_READLINK (AH 2003-07-14)
287 * This procedure is called when read of the first block fails -
288 * this probably happens when it's a directory or a symlink
289 * In case of successful readlink(), the dirname is manipulated,
290 * so that inside the nfs() function a recursion can be done.
291 **************************************************************************/
292 static void nfs_readlink_req(void)
299 p = rpc_add_credentials(p);
301 if (supported_nfs_versions & NFSV2_FLAG) {
302 memcpy(p, filefh, NFS_FHSIZE);
303 p += (NFS_FHSIZE / 4);
304 } else { /* NFSV3_FLAG */
305 *p++ = htonl(filefh3_length);
306 memcpy(p, filefh, filefh3_length);
307 p += (filefh3_length / 4);
310 len = (uint32_t *)p - (uint32_t *)&(data[0]);
312 rpc_req(PROG_NFS, NFS_READLINK, data, len);
315 /**************************************************************************
316 NFS_LOOKUP - Lookup Pathname
317 **************************************************************************/
318 static void nfs_lookup_req(char *fname)
325 fnamelen = strlen(fname);
328 p = rpc_add_credentials(p);
330 if (supported_nfs_versions & NFSV2_FLAG) {
331 memcpy(p, dirfh, NFS_FHSIZE);
332 p += (NFS_FHSIZE / 4);
333 *p++ = htonl(fnamelen);
335 *(p + fnamelen / 4) = 0;
336 memcpy(p, fname, fnamelen);
337 p += (fnamelen + 3) / 4;
339 len = (uint32_t *)p - (uint32_t *)&(data[0]);
341 rpc_req(PROG_NFS, NFS_LOOKUP, data, len);
342 } else { /* NFSV3_FLAG */
343 *p++ = htonl(NFS_FHSIZE); /* Dir handle length */
344 memcpy(p, dirfh, NFS_FHSIZE);
345 p += (NFS_FHSIZE / 4);
346 *p++ = htonl(fnamelen);
348 *(p + fnamelen / 4) = 0;
349 memcpy(p, fname, fnamelen);
350 p += (fnamelen + 3) / 4;
352 len = (uint32_t *)p - (uint32_t *)&(data[0]);
354 rpc_req(PROG_NFS, NFS3PROC_LOOKUP, data, len);
358 /**************************************************************************
359 NFS_READ - Read File on NFS Server
360 **************************************************************************/
361 static void nfs_read_req(int offset, int readlen)
368 p = rpc_add_credentials(p);
370 if (supported_nfs_versions & NFSV2_FLAG) {
371 memcpy(p, filefh, NFS_FHSIZE);
372 p += (NFS_FHSIZE / 4);
373 *p++ = htonl(offset);
374 *p++ = htonl(readlen);
376 } else { /* NFSV3_FLAG */
377 *p++ = htonl(filefh3_length);
378 memcpy(p, filefh, filefh3_length);
379 p += (filefh3_length / 4);
380 *p++ = htonl(0); /* offset is 64-bit long, so fill with 0 */
381 *p++ = htonl(offset);
382 *p++ = htonl(readlen);
386 len = (uint32_t *)p - (uint32_t *)&(data[0]);
388 rpc_req(PROG_NFS, NFS_READ, data, len);
391 /**************************************************************************
392 RPC request dispatcher
393 **************************************************************************/
394 static void nfs_send(void)
396 debug("%s\n", __func__);
399 case STATE_PRCLOOKUP_PROG_MOUNT_REQ:
400 if (supported_nfs_versions & NFSV2_FLAG)
401 rpc_lookup_req(PROG_MOUNT, 1);
402 else /* NFSV3_FLAG */
403 rpc_lookup_req(PROG_MOUNT, 3);
405 case STATE_PRCLOOKUP_PROG_NFS_REQ:
406 if (supported_nfs_versions & NFSV2_FLAG)
407 rpc_lookup_req(PROG_NFS, 2);
408 else /* NFSV3_FLAG */
409 rpc_lookup_req(PROG_NFS, 3);
411 case STATE_MOUNT_REQ:
412 nfs_mount_req(nfs_path);
414 case STATE_UMOUNT_REQ:
417 case STATE_LOOKUP_REQ:
418 nfs_lookup_req(nfs_filename);
421 nfs_read_req(nfs_offset, nfs_len);
423 case STATE_READLINK_REQ:
429 /**************************************************************************
430 Handlers for the reply from server
431 **************************************************************************/
433 static int rpc_lookup_reply(int prog, uchar *pkt, unsigned len)
435 struct rpc_t rpc_pkt;
437 memcpy(&rpc_pkt.u.data[0], pkt, len);
439 debug("%s\n", __func__);
441 if (ntohl(rpc_pkt.u.reply.id) > rpc_id)
443 else if (ntohl(rpc_pkt.u.reply.id) < rpc_id)
444 return -NFS_RPC_DROP;
446 if (rpc_pkt.u.reply.rstatus ||
447 rpc_pkt.u.reply.verifier ||
448 rpc_pkt.u.reply.astatus)
453 nfs_server_mount_port = ntohl(rpc_pkt.u.reply.data[0]);
456 nfs_server_port = ntohl(rpc_pkt.u.reply.data[0]);
463 static int nfs_mount_reply(uchar *pkt, unsigned len)
465 struct rpc_t rpc_pkt;
467 debug("%s\n", __func__);
469 memcpy(&rpc_pkt.u.data[0], pkt, len);
471 if (ntohl(rpc_pkt.u.reply.id) > rpc_id)
473 else if (ntohl(rpc_pkt.u.reply.id) < rpc_id)
474 return -NFS_RPC_DROP;
476 if (rpc_pkt.u.reply.rstatus ||
477 rpc_pkt.u.reply.verifier ||
478 rpc_pkt.u.reply.astatus ||
479 rpc_pkt.u.reply.data[0])
483 /* NFSv2 and NFSv3 use same structure */
484 memcpy(dirfh, rpc_pkt.u.reply.data + 1, NFS_FHSIZE);
489 static int nfs_umountall_reply(uchar *pkt, unsigned len)
491 struct rpc_t rpc_pkt;
493 debug("%s\n", __func__);
495 memcpy(&rpc_pkt.u.data[0], pkt, len);
497 if (ntohl(rpc_pkt.u.reply.id) > rpc_id)
499 else if (ntohl(rpc_pkt.u.reply.id) < rpc_id)
500 return -NFS_RPC_DROP;
502 if (rpc_pkt.u.reply.rstatus ||
503 rpc_pkt.u.reply.verifier ||
504 rpc_pkt.u.reply.astatus)
508 memset(dirfh, 0, sizeof(dirfh));
513 static int nfs_lookup_reply(uchar *pkt, unsigned len)
515 struct rpc_t rpc_pkt;
517 debug("%s\n", __func__);
519 memcpy(&rpc_pkt.u.data[0], pkt, len);
521 if (ntohl(rpc_pkt.u.reply.id) > rpc_id)
523 else if (ntohl(rpc_pkt.u.reply.id) < rpc_id)
524 return -NFS_RPC_DROP;
526 if (rpc_pkt.u.reply.rstatus ||
527 rpc_pkt.u.reply.verifier ||
528 rpc_pkt.u.reply.astatus ||
529 rpc_pkt.u.reply.data[0]) {
530 switch (ntohl(rpc_pkt.u.reply.astatus)) {
531 case NFS_RPC_SUCCESS: /* Not an error */
533 case NFS_RPC_PROG_MISMATCH:
534 /* Remote can't support NFS version */
535 switch (ntohl(rpc_pkt.u.reply.data[0])) {
536 /* Minimal supported NFS version */
538 debug("*** Warning: NFS version not supported: Requested: V%d, accepted: min V%d - max V%d\n",
539 (supported_nfs_versions & NFSV2_FLAG) ?
541 ntohl(rpc_pkt.u.reply.data[0]),
542 ntohl(rpc_pkt.u.reply.data[1]));
543 debug("Will retry with NFSv3\n");
544 /* Clear NFSV2_FLAG from supported versions */
545 supported_nfs_versions &= ~NFSV2_FLAG;
546 return -NFS_RPC_PROG_MISMATCH;
549 puts("*** ERROR: NFS version not supported");
550 debug(": Requested: V%d, accepted: min V%d - max V%d\n",
551 (supported_nfs_versions & NFSV2_FLAG) ?
553 ntohl(rpc_pkt.u.reply.data[0]),
554 ntohl(rpc_pkt.u.reply.data[1]));
558 case NFS_RPC_PROG_UNAVAIL:
559 case NFS_RPC_PROC_UNAVAIL:
560 case NFS_RPC_GARBAGE_ARGS:
561 case NFS_RPC_SYSTEM_ERR:
562 default: /* Unknown error on 'accept state' flag */
563 debug("*** ERROR: accept state error (%d)\n",
564 ntohl(rpc_pkt.u.reply.astatus));
570 if (supported_nfs_versions & NFSV2_FLAG) {
571 if (((uchar *)&(rpc_pkt.u.reply.data[0]) - (uchar *)(&rpc_pkt) + NFS_FHSIZE) > len)
572 return -NFS_RPC_DROP;
573 memcpy(filefh, rpc_pkt.u.reply.data + 1, NFS_FHSIZE);
574 } else { /* NFSV3_FLAG */
575 filefh3_length = ntohl(rpc_pkt.u.reply.data[1]);
576 if (filefh3_length > NFS3_FHSIZE)
577 filefh3_length = NFS3_FHSIZE;
578 if (((uchar *)&(rpc_pkt.u.reply.data[0]) - (uchar *)(&rpc_pkt) + filefh3_length) > len)
579 return -NFS_RPC_DROP;
580 memcpy(filefh, rpc_pkt.u.reply.data + 2, filefh3_length);
586 static int nfs3_get_attributes_offset(uint32_t *data)
589 /* 'attributes_follow' flag is TRUE,
590 * so we have attributes on 21 dwords */
591 /* Skip unused values :
594 nlink; 32 bits value,
601 fileid; 64 bits value,
602 atime; 64 bits value,
603 mtime; 64 bits value,
604 ctime; 64 bits value,
608 /* 'attributes_follow' flag is FALSE,
609 * so we don't have any attributes */
614 static int nfs_readlink_reply(uchar *pkt, unsigned len)
616 struct rpc_t rpc_pkt;
618 int nfsv3_data_offset = 0;
620 debug("%s\n", __func__);
622 memcpy((unsigned char *)&rpc_pkt, pkt, len);
624 if (ntohl(rpc_pkt.u.reply.id) > rpc_id)
626 else if (ntohl(rpc_pkt.u.reply.id) < rpc_id)
627 return -NFS_RPC_DROP;
629 if (rpc_pkt.u.reply.rstatus ||
630 rpc_pkt.u.reply.verifier ||
631 rpc_pkt.u.reply.astatus ||
632 rpc_pkt.u.reply.data[0])
635 if (!(supported_nfs_versions & NFSV2_FLAG)) { /* NFSV3_FLAG */
637 nfs3_get_attributes_offset(rpc_pkt.u.reply.data);
640 /* new path length */
641 rlen = ntohl(rpc_pkt.u.reply.data[1 + nfsv3_data_offset]);
643 if (((uchar *)&(rpc_pkt.u.reply.data[0]) - (uchar *)(&rpc_pkt) + rlen) > len)
644 return -NFS_RPC_DROP;
646 if (*((char *)&(rpc_pkt.u.reply.data[2 + nfsv3_data_offset])) != '/') {
649 strcat(nfs_path, "/");
650 pathlen = strlen(nfs_path);
651 memcpy(nfs_path + pathlen,
652 (uchar *)&(rpc_pkt.u.reply.data[2 + nfsv3_data_offset]),
654 nfs_path[pathlen + rlen] = 0;
657 (uchar *)&(rpc_pkt.u.reply.data[2 + nfsv3_data_offset]),
664 static int nfs_read_reply(uchar *pkt, unsigned len)
666 struct rpc_t rpc_pkt;
670 debug("%s\n", __func__);
672 memcpy(&rpc_pkt.u.data[0], pkt, sizeof(rpc_pkt.u.reply));
674 if (ntohl(rpc_pkt.u.reply.id) > rpc_id)
676 else if (ntohl(rpc_pkt.u.reply.id) < rpc_id)
677 return -NFS_RPC_DROP;
679 if (rpc_pkt.u.reply.rstatus ||
680 rpc_pkt.u.reply.verifier ||
681 rpc_pkt.u.reply.astatus ||
682 rpc_pkt.u.reply.data[0]) {
683 if (rpc_pkt.u.reply.rstatus)
685 if (rpc_pkt.u.reply.astatus)
687 return -ntohl(rpc_pkt.u.reply.data[0]);
690 if ((nfs_offset != 0) && !((nfs_offset) %
691 (NFS_READ_SIZE / 2 * 10 * HASHES_PER_LINE)))
693 if (!(nfs_offset % ((NFS_READ_SIZE / 2) * 10)))
696 if (supported_nfs_versions & NFSV2_FLAG) {
697 rlen = ntohl(rpc_pkt.u.reply.data[18]);
698 data_ptr = (uchar *)&(rpc_pkt.u.reply.data[19]);
699 } else { /* NFSV3_FLAG */
700 int nfsv3_data_offset =
701 nfs3_get_attributes_offset(rpc_pkt.u.reply.data);
704 rlen = ntohl(rpc_pkt.u.reply.data[1 + nfsv3_data_offset]);
705 /* Skip unused values :
707 data_size: 32 bits value,
710 &(rpc_pkt.u.reply.data[4 + nfsv3_data_offset]);
713 if (((uchar *)&(rpc_pkt.u.reply.data[0]) - (uchar *)(&rpc_pkt) + rlen) > len)
716 if (store_block(data_ptr, nfs_offset, rlen))
722 /**************************************************************************
724 **************************************************************************/
725 static void nfs_timeout_handler(void)
727 if (++nfs_timeout_count > NFS_RETRY_COUNT) {
728 puts("\nRetry count exceeded; starting again\n");
732 net_set_timeout_handler(nfs_timeout +
733 NFS_TIMEOUT * nfs_timeout_count,
734 nfs_timeout_handler);
739 static void nfs_handler(uchar *pkt, unsigned dest, struct in_addr sip,
740 unsigned src, unsigned len)
745 debug("%s\n", __func__);
747 if (len > sizeof(struct rpc_t))
750 if (dest != nfs_our_port)
754 case STATE_PRCLOOKUP_PROG_MOUNT_REQ:
755 if (rpc_lookup_reply(PROG_MOUNT, pkt, len) == -NFS_RPC_DROP)
757 nfs_state = STATE_PRCLOOKUP_PROG_NFS_REQ;
761 case STATE_PRCLOOKUP_PROG_NFS_REQ:
762 if (rpc_lookup_reply(PROG_NFS, pkt, len) == -NFS_RPC_DROP)
764 nfs_state = STATE_MOUNT_REQ;
768 case STATE_MOUNT_REQ:
769 reply = nfs_mount_reply(pkt, len);
770 if (reply == -NFS_RPC_DROP) {
772 } else if (reply == -NFS_RPC_ERR) {
773 puts("*** ERROR: Cannot mount\n");
774 /* just to be sure... */
775 nfs_state = STATE_UMOUNT_REQ;
778 nfs_state = STATE_LOOKUP_REQ;
783 case STATE_UMOUNT_REQ:
784 reply = nfs_umountall_reply(pkt, len);
785 if (reply == -NFS_RPC_DROP) {
787 } else if (reply == -NFS_RPC_ERR) {
788 debug("*** ERROR: Cannot umount\n");
789 net_set_state(NETLOOP_FAIL);
792 net_set_state(nfs_download_state);
796 case STATE_LOOKUP_REQ:
797 reply = nfs_lookup_reply(pkt, len);
798 if (reply == -NFS_RPC_DROP) {
800 } else if (reply == -NFS_RPC_ERR) {
801 puts("*** ERROR: File lookup fail\n");
802 nfs_state = STATE_UMOUNT_REQ;
804 } else if (reply == -NFS_RPC_PROG_MISMATCH &&
805 supported_nfs_versions != 0) {
807 nfs_state = STATE_UMOUNT_REQ;
809 /* And retry with another supported version */
810 nfs_state = STATE_PRCLOOKUP_PROG_MOUNT_REQ;
813 nfs_state = STATE_READ_REQ;
815 nfs_len = NFS_READ_SIZE;
820 case STATE_READLINK_REQ:
821 reply = nfs_readlink_reply(pkt, len);
822 if (reply == -NFS_RPC_DROP) {
824 } else if (reply == -NFS_RPC_ERR) {
825 puts("*** ERROR: Symlink fail\n");
826 nfs_state = STATE_UMOUNT_REQ;
829 debug("Symlink --> %s\n", nfs_path);
830 nfs_filename = basename(nfs_path);
831 nfs_path = dirname(nfs_path);
833 nfs_state = STATE_MOUNT_REQ;
839 rlen = nfs_read_reply(pkt, len);
840 if (rlen == -NFS_RPC_DROP)
842 net_set_timeout_handler(nfs_timeout, nfs_timeout_handler);
846 } else if ((rlen == -NFSERR_ISDIR) || (rlen == -NFSERR_INVAL)) {
848 nfs_state = STATE_READLINK_REQ;
852 nfs_download_state = NETLOOP_SUCCESS;
854 debug("NFS READ error (%d)\n", rlen);
855 nfs_state = STATE_UMOUNT_REQ;
865 debug("%s\n", __func__);
866 nfs_download_state = NETLOOP_FAIL;
868 nfs_server_ip = net_server_ip;
869 nfs_path = (char *)nfs_path_buff;
871 if (nfs_path == NULL) {
872 net_set_state(NETLOOP_FAIL);
873 printf("*** ERROR: Fail allocate memory\n");
877 if (!net_parse_bootfile(&nfs_server_ip, nfs_path,
878 sizeof(nfs_path_buff))) {
879 sprintf(nfs_path, "/nfsroot/%02X%02X%02X%02X.img",
880 net_ip.s_addr & 0xFF,
881 (net_ip.s_addr >> 8) & 0xFF,
882 (net_ip.s_addr >> 16) & 0xFF,
883 (net_ip.s_addr >> 24) & 0xFF);
885 printf("*** Warning: no boot file name; using '%s'\n",
889 nfs_filename = basename(nfs_path);
890 nfs_path = dirname(nfs_path);
892 printf("Using %s device\n", eth_get_name());
894 printf("File transfer via NFS from server %pI4; our IP address is %pI4",
895 &nfs_server_ip, &net_ip);
897 /* Check if we need to send across this subnet */
898 if (net_gateway.s_addr && net_netmask.s_addr) {
899 struct in_addr our_net;
900 struct in_addr server_net;
902 our_net.s_addr = net_ip.s_addr & net_netmask.s_addr;
903 server_net.s_addr = nfs_server_ip.s_addr & net_netmask.s_addr;
904 if (our_net.s_addr != server_net.s_addr)
905 printf("; sending through gateway %pI4",
908 printf("\nFilename '%s/%s'.", nfs_path, nfs_filename);
910 if (net_boot_file_expected_size_in_blocks) {
911 printf(" Size is 0x%x Bytes = ",
912 net_boot_file_expected_size_in_blocks << 9);
913 print_size(net_boot_file_expected_size_in_blocks << 9, "");
915 printf("\nLoad address: 0x%lx\nLoading: *\b", load_addr);
917 net_set_timeout_handler(nfs_timeout, nfs_timeout_handler);
918 net_set_udp_handler(nfs_handler);
920 nfs_timeout_count = 0;
921 nfs_state = STATE_PRCLOOKUP_PROG_MOUNT_REQ;
923 /*nfs_our_port = 4096 + (get_ticks() % 3072);*/
927 /* zero out server ether in case the server ip has changed */
928 memset(net_server_ethaddr, 0, 6);