[people/ms/u-boot.git] / net / nfs.c

/*
 * NFS support driver - based on etherboot and U-BOOT's tftp.c
 *
 * Masami Komiya <mkomiya@sonare.it> 2004
 *
 */

/* NOTE: the NFS code is heavily inspired by the NetBSD netboot code (read:
 * large portions are copied verbatim) as distributed in OSKit 0.97.  A few
 * changes were necessary to adapt the code to Etherboot and to fix several
 * inconsistencies.  Also the RPC message preparation is done "by hand" to
 * avoid adding netsprintf() which I find hard to understand and use.  */

/* NOTE 2: Etherboot does not care about things beyond the kernel image, so
 * it loads the kernel image off the boot server (ARP_SERVER) and does not
 * access the client root disk (root-path in dhcpd.conf), which would use
 * ARP_ROOTSERVER.  The root disk is something the operating system we are
 * about to load needs to use.	This is different from the OSKit 0.97 logic.  */

/* NOTE 3: Symlink handling introduced by Anselm M Hoffmeister, 2003-July-14
 * If a symlink is encountered, it is followed as far as possible (recursion
 * possible, maximum 16 steps). There is no clearing of ".."'s inside the
 * path, so please DON'T DO THAT. thx. */

#include <common.h>
#include <command.h>
#include <net.h>
#include <malloc.h>
#include "nfs.h"
#include "bootp.h"

/*#define NFS_DEBUG*/

#if defined(CONFIG_CMD_NET) && defined(CONFIG_CMD_NFS)

#define HASHES_PER_LINE 65	/* Number of "loading" hashes per line	*/
#define NFS_TIMEOUT 60UL

static int fs_mounted = 0;
static unsigned long rpc_id = 0;
static int nfs_offset = -1;
static int nfs_len;

static char dirfh[NFS_FHSIZE];	/* file handle of directory */
static char filefh[NFS_FHSIZE]; /* file handle of kernel image */

static int	NfsDownloadState;
static IPaddr_t NfsServerIP;
static int	NfsSrvMountPort;
static int	NfsSrvNfsPort;
static int	NfsOurPort;
static int	NfsTimeoutCount;
static int	NfsState;
#define STATE_PRCLOOKUP_PROG_MOUNT_REQ	1
#define STATE_PRCLOOKUP_PROG_NFS_REQ	2
#define STATE_MOUNT_REQ			3
#define STATE_UMOUNT_REQ		4
#define STATE_LOOKUP_REQ		5
#define STATE_READ_REQ			6
#define STATE_READLINK_REQ		7

static char default_filename[64];
static char *nfs_filename;
static char *nfs_path;
static char nfs_path_buff[2048];

static __inline__ int
store_block (uchar * src, unsigned offset, unsigned len)
{
	ulong newsize = offset + len;
#ifdef CFG_DIRECT_FLASH_NFS
	int i, rc = 0;

	for (i=0; i<CFG_MAX_FLASH_BANKS; i++) {
		/* start address in flash? */
		if (load_addr + offset >= flash_info[i].start[0]) {
			rc = 1;
			break;
		}
	}

	if (rc) { /* Flash is destination for this packet */
		rc = flash_write ((uchar *)src, (ulong)(load_addr+offset), len);
		if (rc) {
			flash_perror (rc);
			return -1;
		}
	} else
#endif /* CFG_DIRECT_FLASH_NFS */
	{
		(void)memcpy ((void *)(load_addr + offset), src, len);
	}

	if (NetBootFileXferSize < (offset+len))
		NetBootFileXferSize = newsize;
	return 0;
}

static char*
basename (char *path)
{
	char *fname;

	fname = path + strlen(path) - 1;
	while (fname >= path) {
		if (*fname == '/') {
			fname++;
			break;
		}
		fname--;
	}
	return fname;
}

static char*
dirname (char *path)
{
	char *fname;

	fname = basename (path);
	--fname;
	*fname = '\0';
	return path;
}

/**************************************************************************
RPC_ADD_CREDENTIALS - Add RPC authentication/verifier entries
**************************************************************************/
static long *rpc_add_credentials (long *p)
{
	int hl;
	int hostnamelen;
	char hostname[256];

	strcpy (hostname, "");
	hostnamelen=strlen (hostname);

	/* Here's the executive summary on authentication requirements of the
	 * various NFS server implementations:	Linux accepts both AUTH_NONE
	 * and AUTH_UNIX authentication (also accepts an empty hostname field
	 * in the AUTH_UNIX scheme).  *BSD refuses AUTH_NONE, but accepts
	 * AUTH_UNIX (also accepts an empty hostname field in the AUTH_UNIX
	 * scheme).  To be safe, use AUTH_UNIX and pass the hostname if we have
	 * it (if the BOOTP/DHCP reply didn't give one, just use an empty
	 * hostname).  */

	hl = (hostnamelen + 3) & ~3;

	/* Provide an AUTH_UNIX credential.  */
	*p++ = htonl(1);		/* AUTH_UNIX */
	*p++ = htonl(hl+20);		/* auth length */
	*p++ = htonl(0);		/* stamp */
	*p++ = htonl(hostnamelen);	/* hostname string */
	if (hostnamelen & 3) {
		*(p + hostnamelen / 4) = 0; /* add zero padding */
	}
	memcpy (p, hostname, hostnamelen);
	p += hl / 4;
	*p++ = 0;			/* uid */
	*p++ = 0;			/* gid */
	*p++ = 0;			/* auxiliary gid list */

	/* Provide an AUTH_NONE verifier.  */
	*p++ = 0;			/* AUTH_NONE */
	*p++ = 0;			/* auth length */

	return p;
}

/**************************************************************************
RPC_LOOKUP - Lookup RPC Port numbers
**************************************************************************/
static void
rpc_req (int rpc_prog, int rpc_proc, uint32_t *data, int datalen)
{
	struct rpc_t pkt;
	unsigned long id;
	uint32_t *p;
	int pktlen;
	int sport;

	id = ++rpc_id;
	pkt.u.call.id = htonl(id);
	pkt.u.call.type = htonl(MSG_CALL);
	pkt.u.call.rpcvers = htonl(2);	/* use RPC version 2 */
	pkt.u.call.prog = htonl(rpc_prog);
	pkt.u.call.vers = htonl(2);	/* portmapper is version 2 */
	pkt.u.call.proc = htonl(rpc_proc);
	p = (uint32_t *)&(pkt.u.call.data);

	if (datalen)
		memcpy ((char *)p, (char *)data, datalen*sizeof(uint32_t));

	pktlen = (char *)p + datalen*sizeof(uint32_t) - (char *)&pkt;

	memcpy ((char *)NetTxPacket + NetEthHdrSize() + IP_HDR_SIZE, (char *)&pkt, pktlen);

	if (rpc_prog == PROG_PORTMAP)
		sport = SUNRPC_PORT;
	else if (rpc_prog == PROG_MOUNT)
		sport = NfsSrvMountPort;
	else
		sport = NfsSrvNfsPort;

	NetSendUDPPacket (NetServerEther, NfsServerIP, sport, NfsOurPort, pktlen);
}

/**************************************************************************
RPC_LOOKUP - Lookup RPC Port numbers
**************************************************************************/
static void
rpc_lookup_req (int prog, int ver)
{
	uint32_t data[16];

	data[0] = 0; data[1] = 0;	/* auth credential */
	data[2] = 0; data[3] = 0;	/* auth verifier */
	data[4] = htonl(prog);
	data[5] = htonl(ver);
	data[6] = htonl(17);	/* IP_UDP */
	data[7] = 0;

	rpc_req (PROG_PORTMAP, PORTMAP_GETPORT, data, 8);
}

/**************************************************************************
NFS_MOUNT - Mount an NFS Filesystem
**************************************************************************/
static void
nfs_mount_req (char *path)
{
	uint32_t data[1024];
	uint32_t *p;
	int len;
	int pathlen;

	pathlen = strlen (path);

	p = &(data[0]);
	p = (uint32_t *)rpc_add_credentials((long *)p);

	*p++ = htonl(pathlen);
	if (pathlen & 3) *(p + pathlen / 4) = 0;
	memcpy (p, path, pathlen);
	p += (pathlen + 3) / 4;

	len = (uint32_t *)p - (uint32_t *)&(data[0]);

	rpc_req (PROG_MOUNT, MOUNT_ADDENTRY, data, len);
}

/**************************************************************************
NFS_UMOUNTALL - Unmount all our NFS Filesystems on the Server
**************************************************************************/
static void
nfs_umountall_req (void)
{
	uint32_t data[1024];
	uint32_t *p;
	int len;

	if ((NfsSrvMountPort == -1) || (!fs_mounted)) {
		/* Nothing mounted, nothing to umount */
		return;
	}

	p = &(data[0]);
	p = (uint32_t *)rpc_add_credentials ((long *)p);

	len = (uint32_t *)p - (uint32_t *)&(data[0]);

	rpc_req (PROG_MOUNT, MOUNT_UMOUNTALL, data, len);
}

/***************************************************************************
 * NFS_READLINK (AH 2003-07-14)
 * This procedure is called when read of the first block fails -
 * this probably happens when it's a directory or a symlink
 * In case of successful readlink(), the dirname is manipulated,
 * so that inside the nfs() function a recursion can be done.
 **************************************************************************/
static void
nfs_readlink_req (void)
{
	uint32_t data[1024];
	uint32_t *p;
	int len;

	p = &(data[0]);
	p = (uint32_t *)rpc_add_credentials ((long *)p);

	memcpy (p, filefh, NFS_FHSIZE);
	p += (NFS_FHSIZE / 4);

	len = (uint32_t *)p - (uint32_t *)&(data[0]);

	rpc_req (PROG_NFS, NFS_READLINK, data, len);
}

/**************************************************************************
NFS_LOOKUP - Lookup Pathname
**************************************************************************/
static void
nfs_lookup_req (char *fname)
{
	uint32_t data[1024];
	uint32_t *p;
	int len;
	int fnamelen;

	fnamelen = strlen (fname);

	p = &(data[0]);
	p = (uint32_t *)rpc_add_credentials ((long *)p);

	memcpy (p, dirfh, NFS_FHSIZE);
	p += (NFS_FHSIZE / 4);
	*p++ = htonl(fnamelen);
	if (fnamelen & 3) *(p + fnamelen / 4) = 0;
	memcpy (p, fname, fnamelen);
	p += (fnamelen + 3) / 4;

	len = (uint32_t *)p - (uint32_t *)&(data[0]);

	rpc_req (PROG_NFS, NFS_LOOKUP, data, len);
}

/**************************************************************************
NFS_READ - Read File on NFS Server
**************************************************************************/
static void
nfs_read_req (int offset, int readlen)
{
	uint32_t data[1024];
	uint32_t *p;
	int len;

	p = &(data[0]);
	p = (uint32_t *)rpc_add_credentials ((long *)p);

	memcpy (p, filefh, NFS_FHSIZE);
	p += (NFS_FHSIZE / 4);
	*p++ = htonl(offset);
	*p++ = htonl(readlen);
	*p++ = 0;

	len = (uint32_t *)p - (uint32_t *)&(data[0]);

	rpc_req (PROG_NFS, NFS_READ, data, len);
}

/**************************************************************************
RPC request dispatcher
**************************************************************************/

static void
NfsSend (void)
{
#ifdef NFS_DEBUG
	printf ("%s\n", __FUNCTION__);
#endif

	switch (NfsState) {
	case STATE_PRCLOOKUP_PROG_MOUNT_REQ:
		rpc_lookup_req (PROG_MOUNT, 1);
		break;
	case STATE_PRCLOOKUP_PROG_NFS_REQ:
		rpc_lookup_req (PROG_NFS, 2);
		break;
	case STATE_MOUNT_REQ:
		nfs_mount_req (nfs_path);
		break;
	case STATE_UMOUNT_REQ:
		nfs_umountall_req ();
		break;
	case STATE_LOOKUP_REQ:
		nfs_lookup_req (nfs_filename);
		break;
	case STATE_READ_REQ:
		nfs_read_req (nfs_offset, nfs_len);
		break;
	case STATE_READLINK_REQ:
		nfs_readlink_req ();
		break;
	}
}

/**************************************************************************
Handlers for the reply from server
**************************************************************************/

static int
rpc_lookup_reply (int prog, uchar *pkt, unsigned len)
{
	struct rpc_t rpc_pkt;

	memcpy ((unsigned char *)&rpc_pkt, pkt, len);

#ifdef NFS_DEBUG
	printf ("%s\n", __FUNCTION__);
#endif

	if (ntohl(rpc_pkt.u.reply.id) != rpc_id)
		return -1;

	if (rpc_pkt.u.reply.rstatus  ||
	    rpc_pkt.u.reply.verifier ||
	    rpc_pkt.u.reply.astatus) {
		return -1;
	}

	switch (prog) {
	case PROG_MOUNT:
		NfsSrvMountPort = ntohl(rpc_pkt.u.reply.data[0]);
		break;
	case PROG_NFS:
		NfsSrvNfsPort = ntohl(rpc_pkt.u.reply.data[0]);
		break;
	}

	return 0;
}

static int
nfs_mount_reply (uchar *pkt, unsigned len)
{
	struct rpc_t rpc_pkt;

#ifdef NFS_DEBUG
	printf ("%s\n", __FUNCTION__);
#endif

	memcpy ((unsigned char *)&rpc_pkt, pkt, len);

	if (ntohl(rpc_pkt.u.reply.id) != rpc_id)
		return -1;

	if (rpc_pkt.u.reply.rstatus  ||
	    rpc_pkt.u.reply.verifier ||
	    rpc_pkt.u.reply.astatus  ||
	    rpc_pkt.u.reply.data[0]) {
		return -1;
	}

	fs_mounted = 1;
	memcpy (dirfh, rpc_pkt.u.reply.data + 1, NFS_FHSIZE);

	return 0;
}

static int
nfs_umountall_reply (uchar *pkt, unsigned len)
{
	struct rpc_t rpc_pkt;

#ifdef NFS_DEBUG
	printf ("%s\n", __FUNCTION__);
#endif

	memcpy ((unsigned char *)&rpc_pkt, pkt, len);

	if (ntohl(rpc_pkt.u.reply.id) != rpc_id)
		return -1;

	if (rpc_pkt.u.reply.rstatus  ||
	    rpc_pkt.u.reply.verifier ||
	    rpc_pkt.u.reply.astatus) {
		return -1;
	}

	fs_mounted = 0;
	memset (dirfh, 0, sizeof(dirfh));

	return 0;
}

static int
nfs_lookup_reply (uchar *pkt, unsigned len)
{
	struct rpc_t rpc_pkt;

#ifdef NFS_DEBUG
	printf ("%s\n", __FUNCTION__);
#endif

	memcpy ((unsigned char *)&rpc_pkt, pkt, len);

	if (ntohl(rpc_pkt.u.reply.id) != rpc_id)
		return -1;

	if (rpc_pkt.u.reply.rstatus  ||
	    rpc_pkt.u.reply.verifier ||
	    rpc_pkt.u.reply.astatus  ||
	    rpc_pkt.u.reply.data[0]) {
		return -1;
	}

	memcpy (filefh, rpc_pkt.u.reply.data + 1, NFS_FHSIZE);

	return 0;
}

static int
nfs_readlink_reply (uchar *pkt, unsigned len)
{
	struct rpc_t rpc_pkt;
	int rlen;

#ifdef NFS_DEBUG
	printf ("%s\n", __FUNCTION__);
#endif

	memcpy ((unsigned char *)&rpc_pkt, pkt, len);

	if (ntohl(rpc_pkt.u.reply.id) != rpc_id)
		return -1;

	if (rpc_pkt.u.reply.rstatus  ||
	    rpc_pkt.u.reply.verifier ||
	    rpc_pkt.u.reply.astatus  ||
	    rpc_pkt.u.reply.data[0]) {
		return -1;
	}

	rlen = ntohl (rpc_pkt.u.reply.data[1]); /* new path length */

	if (*((char *)&(rpc_pkt.u.reply.data[2])) != '/') {
		int pathlen;
		strcat (nfs_path, "/");
		pathlen = strlen(nfs_path);
		memcpy (nfs_path+pathlen, (uchar *)&(rpc_pkt.u.reply.data[2]), rlen);
		nfs_path[pathlen+rlen+1] = 0;
	} else {
		memcpy (nfs_path, (uchar *)&(rpc_pkt.u.reply.data[2]), rlen);
		nfs_path[rlen] = 0;
	}
	return 0;
}

static int
nfs_read_reply (uchar *pkt, unsigned len)
{
	struct rpc_t rpc_pkt;
	int rlen;

#ifdef NFS_DEBUG_nop
	printf ("%s\n", __FUNCTION__);
#endif

	memcpy ((uchar *)&rpc_pkt, pkt, sizeof(rpc_pkt.u.reply));

	if (ntohl(rpc_pkt.u.reply.id) != rpc_id)
		return -1;

	if (rpc_pkt.u.reply.rstatus  ||
	    rpc_pkt.u.reply.verifier ||
	    rpc_pkt.u.reply.astatus  ||
	    rpc_pkt.u.reply.data[0]) {
		if (rpc_pkt.u.reply.rstatus) {
			return -9999;
		}
		if (rpc_pkt.u.reply.astatus) {
			return -9999;
		}
		return -ntohl(rpc_pkt.u.reply.data[0]);;
	}

	if ((nfs_offset!=0) && !((nfs_offset) % (NFS_READ_SIZE/2*10*HASHES_PER_LINE))) {
		puts ("\n\t ");
	}
	if (!(nfs_offset % ((NFS_READ_SIZE/2)*10))) {
		putc ('#');
	}

	rlen = ntohl(rpc_pkt.u.reply.data[18]);
	if ( store_block ((uchar *)pkt+sizeof(rpc_pkt.u.reply), nfs_offset, rlen) )
		return -9999;

	return rlen;
}

/**************************************************************************
Interfaces of U-BOOT
**************************************************************************/

static void
NfsTimeout (void)
{
	puts ("Timeout\n");
	NetState = NETLOOP_FAIL;
	return;
}

static void
NfsHandler (uchar *pkt, unsigned dest, unsigned src, unsigned len)
{
	int rlen;

#ifdef NFS_DEBUG
	printf ("%s\n", __FUNCTION__);
#endif

	if (dest != NfsOurPort) return;

	switch (NfsState) {
	case STATE_PRCLOOKUP_PROG_MOUNT_REQ:
		rpc_lookup_reply (PROG_MOUNT, pkt, len);
		NfsState = STATE_PRCLOOKUP_PROG_NFS_REQ;
		NfsSend ();
		break;

	case STATE_PRCLOOKUP_PROG_NFS_REQ:
		rpc_lookup_reply (PROG_NFS, pkt, len);
		NfsState = STATE_MOUNT_REQ;
		NfsSend ();
		break;

	case STATE_MOUNT_REQ:
		if (nfs_mount_reply(pkt, len)) {
			puts ("*** ERROR: Cannot mount\n");
			/* just to be sure... */
			NfsState = STATE_UMOUNT_REQ;
			NfsSend ();
		} else {
			NfsState = STATE_LOOKUP_REQ;
			NfsSend ();
		}
		break;

	case STATE_UMOUNT_REQ:
		if (nfs_umountall_reply(pkt, len)) {
			puts ("*** ERROR: Cannot umount\n");
			NetState = NETLOOP_FAIL;
		} else {
			puts ("\ndone\n");
			NetState = NfsDownloadState;
		}
		break;

	case STATE_LOOKUP_REQ:
		if (nfs_lookup_reply(pkt, len)) {
			puts ("*** ERROR: File lookup fail\n");
			NfsState = STATE_UMOUNT_REQ;
			NfsSend ();
		} else {
			NfsState = STATE_READ_REQ;
			nfs_offset = 0;
			nfs_len = NFS_READ_SIZE;
			NfsSend ();
		}
		break;

	case STATE_READLINK_REQ:
		if (nfs_readlink_reply(pkt, len)) {
			puts ("*** ERROR: Symlink fail\n");
			NfsState = STATE_UMOUNT_REQ;
			NfsSend ();
		} else {
#ifdef NFS_DEBUG
			printf ("Symlink --> %s\n", nfs_path);
#endif
			nfs_filename = basename (nfs_path);
			nfs_path     = dirname (nfs_path);

			NfsState = STATE_MOUNT_REQ;
			NfsSend ();
		}
		break;

	case STATE_READ_REQ:
		rlen = nfs_read_reply (pkt, len);
		NetSetTimeout (NFS_TIMEOUT * CFG_HZ, NfsTimeout);
		if (rlen > 0) {
			nfs_offset += rlen;
			NfsSend ();
		}
		else if ((rlen == -NFSERR_ISDIR)||(rlen == -NFSERR_INVAL)) {
			/* symbolic link */
			NfsState = STATE_READLINK_REQ;
			NfsSend ();
		} else {
			if ( ! rlen ) NfsDownloadState = NETLOOP_SUCCESS;
			NfsState = STATE_UMOUNT_REQ;
			NfsSend ();
		}
		break;
	}
}


void
NfsStart (void)
{
#ifdef NFS_DEBUG
	printf ("%s\n", __FUNCTION__);
#endif
	NfsDownloadState = NETLOOP_FAIL;

	NfsServerIP = NetServerIP;
	nfs_path = (char *)nfs_path_buff;

	if (nfs_path == NULL) {
		NetState = NETLOOP_FAIL;
		puts ("*** ERROR: Fail allocate memory\n");
		return;
	}

	if (BootFile[0] == '\0') {
		sprintf (default_filename, "/nfsroot/%02lX%02lX%02lX%02lX.img",
			NetOurIP & 0xFF,
			(NetOurIP >>  8) & 0xFF,
			(NetOurIP >> 16) & 0xFF,
			(NetOurIP >> 24) & 0xFF	);
		strcpy (nfs_path, default_filename);

		printf ("*** Warning: no boot file name; using '%s'\n",
			nfs_path);
	} else {
		char *p=BootFile;

		p = strchr (p, ':');

		if (p != NULL) {
			NfsServerIP = string_to_ip (BootFile);
			++p;
			strcpy (nfs_path, p);
		} else {
			strcpy (nfs_path, BootFile);
		}
	}

	nfs_filename = basename (nfs_path);
	nfs_path     = dirname (nfs_path);

#if defined(CONFIG_NET_MULTI)
	printf ("Using %s device\n", eth_get_name());
#endif

	puts ("File transfer via NFS from server "); print_IPaddr (NfsServerIP);
	puts ("; our IP address is ");		    print_IPaddr (NetOurIP);

	/* Check if we need to send across this subnet */
	if (NetOurGatewayIP && NetOurSubnetMask) {
		IPaddr_t OurNet	    = NetOurIP	  & NetOurSubnetMask;
		IPaddr_t ServerNet  = NetServerIP & NetOurSubnetMask;

		if (OurNet != ServerNet) {
			puts ("; sending through gateway ");
			print_IPaddr (NetOurGatewayIP) ;
		}
	}
	printf ("\nFilename '%s/%s'.", nfs_path, nfs_filename);

	if (NetBootFileSize) {
		printf (" Size is 0x%x Bytes = ", NetBootFileSize<<9);
		print_size (NetBootFileSize<<9, "");
	}
	printf ("\nLoad address: 0x%lx\n"
		"Loading: *\b", load_addr);

	NetSetTimeout (NFS_TIMEOUT * CFG_HZ, NfsTimeout);
	NetSetHandler (NfsHandler);

	NfsTimeoutCount = 0;
	NfsState = STATE_PRCLOOKUP_PROG_MOUNT_REQ;

	/*NfsOurPort = 4096 + (get_ticks() % 3072);*/
	/*FIX ME !!!*/
	NfsOurPort = 1000;

	/* zero out server ether in case the server ip has changed */
	memset (NetServerEther, 0, 6);

	NfsSend ();
}

#endif
Commit	Line	Data
cbd8a35c WD	1	/*
	2	* NFS support driver - based on etherboot and U-BOOT's tftp.c
	3	*
	4	* Masami Komiya <mkomiya@sonare.it> 2004
	5	*
	6	*/
	7
	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. */
	13
	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. */
	19
	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. */
	24
	25	#include <common.h>
	26	#include <command.h>
	27	#include <net.h>
	28	#include <malloc.h>
	29	#include "nfs.h"
	30	#include "bootp.h"
	31
	32	/#define NFS_DEBUG/
	33
3865b1fb	34	#if defined(CONFIG_CMD_NET) && defined(CONFIG_CMD_NFS)
cbd8a35c WD	35
cbd8a35c WD	36	#define HASHES_PER_LINE 65 /* Number of "loading" hashes per line */
079c2c4f	37	#define NFS_TIMEOUT 60UL
cbd8a35c WD	38
cbd8a35c WD	39	static int fs_mounted = 0;
c3f9d493	40	static unsigned long rpc_id = 0;
cbd8a35c WD	41	static int nfs_offset = -1;
	42	static int nfs_len;
	43
	44	static char dirfh[NFS_FHSIZE]; /* file handle of directory */
	45	static char filefh[NFS_FHSIZE]; /* file handle of kernel image */
	46
23a7a32d	47	static int NfsDownloadState;
cbd8a35c WD	48	static IPaddr_t NfsServerIP;
	49	static int NfsSrvMountPort;
	50	static int NfsSrvNfsPort;
	51	static int NfsOurPort;
	52	static int NfsTimeoutCount;
	53	static int NfsState;
	54	#define STATE_PRCLOOKUP_PROG_MOUNT_REQ 1
	55	#define STATE_PRCLOOKUP_PROG_NFS_REQ 2
	56	#define STATE_MOUNT_REQ 3
	57	#define STATE_UMOUNT_REQ 4
	58	#define STATE_LOOKUP_REQ 5
	59	#define STATE_READ_REQ 6
	60	#define STATE_READLINK_REQ 7
	61
	62	static char default_filename[64];
	63	static char *nfs_filename;
	64	static char *nfs_path;
	65	static char nfs_path_buff[2048];
	66
23a7a32d	67	static __inline__ int
cbd8a35c WD	68	store_block (uchar * src, unsigned offset, unsigned len)
cbd8a35c WD	69	{
a084f7da	70	ulong newsize = offset + len;
cbd8a35c WD	71	#ifdef CFG_DIRECT_FLASH_NFS
	72	int i, rc = 0;
	73
	74	for (i=0; i<CFG_MAX_FLASH_BANKS; i++) {
	75	/* start address in flash? */
	76	if (load_addr + offset >= flash_info[i].start[0]) {
	77	rc = 1;
	78	break;
	79	}
	80	}
	81
	82	if (rc) { /* Flash is destination for this packet */
	83	rc = flash_write ((uchar *)src, (ulong)(load_addr+offset), len);
	84	if (rc) {
	85	flash_perror (rc);
23a7a32d	86	return -1;
cbd8a35c WD	87	}
	88	} else
	89	#endif /* CFG_DIRECT_FLASH_NFS */
cbd8a35c WD	90	{
	91	(void)memcpy ((void *)(load_addr + offset), src, len);
	92	}
a084f7da WD	93
	94	if (NetBootFileXferSize < (offset+len))
	95	NetBootFileXferSize = newsize;
23a7a32d	96	return 0;
cbd8a35c WD	97	}
	98
	99	static char*
	100	basename (char *path)
	101	{
	102	char *fname;
	103
	104	fname = path + strlen(path) - 1;
	105	while (fname >= path) {
	106	if (*fname == '/') {
	107	fname++;
	108	break;
	109	}
	110	fname--;
	111	}
	112	return fname;
	113	}
	114
	115	static char*
	116	dirname (char *path)
	117	{
	118	char *fname;
	119
	120	fname = basename (path);
	121	--fname;
	122	*fname = '\0';
	123	return path;
	124	}
	125
cbd8a35c WD	126	/**************************************************************************
	127	RPC_ADD_CREDENTIALS - Add RPC authentication/verifier entries
	128	**************************************************************************/
	129	static long rpc_add_credentials (long p)
	130	{
	131	int hl;
	132	int hostnamelen;
	133	char hostname[256];
	134
	135	strcpy (hostname, "");
	136	hostnamelen=strlen (hostname);
	137
	138	/* Here's the executive summary on authentication requirements of the
	139	* various NFS server implementations: Linux accepts both AUTH_NONE
	140	* and AUTH_UNIX authentication (also accepts an empty hostname field
	141	* in the AUTH_UNIX scheme). *BSD refuses AUTH_NONE, but accepts
	142	* AUTH_UNIX (also accepts an empty hostname field in the AUTH_UNIX
	143	* scheme). To be safe, use AUTH_UNIX and pass the hostname if we have
	144	* it (if the BOOTP/DHCP reply didn't give one, just use an empty
	145	* hostname). */
	146
	147	hl = (hostnamelen + 3) & ~3;
	148
	149	/* Provide an AUTH_UNIX credential. */
	150	p++ = htonl(1); / AUTH_UNIX */
	151	p++ = htonl(hl+20); / auth length */
	152	p++ = htonl(0); / stamp */
	153	p++ = htonl(hostnamelen); / hostname string */
	154	if (hostnamelen & 3) {
	155	(p + hostnamelen / 4) = 0; / add zero padding */
	156	}
	157	memcpy (p, hostname, hostnamelen);
	158	p += hl / 4;
	159	p++ = 0; / uid */
	160	p++ = 0; / gid */
	161	p++ = 0; / auxiliary gid list */
	162
	163	/* Provide an AUTH_NONE verifier. */
	164	p++ = 0; / AUTH_NONE */
	165	p++ = 0; / auth length */
	166
	167	return p;
	168	}
	169
	170	/**************************************************************************
	171	RPC_LOOKUP - Lookup RPC Port numbers
	172	**************************************************************************/
	173	static void
	174	rpc_req (int rpc_prog, int rpc_proc, uint32_t *data, int datalen)
	175	{
	176	struct rpc_t pkt;
	177	unsigned long id;
	178	uint32_t *p;
	179	int pktlen;
	180	int sport;
	181
c3f9d493	182	id = ++rpc_id;
cbd8a35c WD	183	pkt.u.call.id = htonl(id);
	184	pkt.u.call.type = htonl(MSG_CALL);
	185	pkt.u.call.rpcvers = htonl(2); /* use RPC version 2 */
	186	pkt.u.call.prog = htonl(rpc_prog);
	187	pkt.u.call.vers = htonl(2); /* portmapper is version 2 */
	188	pkt.u.call.proc = htonl(rpc_proc);
	189	p = (uint32_t *)&(pkt.u.call.data);
	190
	191	if (datalen)
	192	memcpy ((char )p, (char )data, datalen*sizeof(uint32_t));
	193
	194	pktlen = (char )p + datalensizeof(uint32_t) - (char *)&pkt;
	195
a3d991bd	196	memcpy ((char )NetTxPacket + NetEthHdrSize() + IP_HDR_SIZE, (char )&pkt, pktlen);
cbd8a35c WD	197
	198	if (rpc_prog == PROG_PORTMAP)
	199	sport = SUNRPC_PORT;
	200	else if (rpc_prog == PROG_MOUNT)
	201	sport = NfsSrvMountPort;
	202	else
	203	sport = NfsSrvNfsPort;
	204
	205	NetSendUDPPacket (NetServerEther, NfsServerIP, sport, NfsOurPort, pktlen);
	206	}
	207
	208	/**************************************************************************
	209	RPC_LOOKUP - Lookup RPC Port numbers
	210	**************************************************************************/
	211	static void
	212	rpc_lookup_req (int prog, int ver)
	213	{
	214	uint32_t data[16];
	215
	216	data[0] = 0; data[1] = 0; /* auth credential */
	217	data[2] = 0; data[3] = 0; /* auth verifier */
	218	data[4] = htonl(prog);
	219	data[5] = htonl(ver);
	220	data[6] = htonl(17); /* IP_UDP */
	221	data[7] = 0;
	222
	223	rpc_req (PROG_PORTMAP, PORTMAP_GETPORT, data, 8);
	224	}
	225
	226	/**************************************************************************
	227	NFS_MOUNT - Mount an NFS Filesystem
	228	**************************************************************************/
	229	static void
	230	nfs_mount_req (char *path)
	231	{
	232	uint32_t data[1024];
	233	uint32_t *p;
	234	int len;
	235	int pathlen;
	236
	237	pathlen = strlen (path);
	238
	239	p = &(data[0]);
	240	p = (uint32_t )rpc_add_credentials((long )p);
	241
	242	*p++ = htonl(pathlen);
	243	if (pathlen & 3) *(p + pathlen / 4) = 0;
	244	memcpy (p, path, pathlen);
	245	p += (pathlen + 3) / 4;
	246
	247	len = (uint32_t )p - (uint32_t )&(data[0]);
	248
	249	rpc_req (PROG_MOUNT, MOUNT_ADDENTRY, data, len);
	250	}
	251
	252	/**************************************************************************
	253	NFS_UMOUNTALL - Unmount all our NFS Filesystems on the Server
	254	**************************************************************************/
	255	static void
	256	nfs_umountall_req (void)
	257	{
	258	uint32_t data[1024];
	259	uint32_t *p;
	260	int len;
261
262	if ((NfsSrvMountPort == -1) \|\| (!fs_mounted)) {
263	/* Nothing mounted, nothing to umount */
264	return;
265	}
266
267	p = &(data[0]);
268	p = (uint32_t )rpc_add_credentials ((long )p);
269
270	len = (uint32_t )p - (uint32_t )&(data[0]);
271
272	rpc_req (PROG_MOUNT, MOUNT_UMOUNTALL, data, len);
273	}
274
275	/***************************************************************************
276	* NFS_READLINK (AH 2003-07-14)
277	* This procedure is called when read of the first block fails -
278	* this probably happens when it's a directory or a symlink
279	* In case of successful readlink(), the dirname is manipulated,
280	* so that inside the nfs() function a recursion can be done.
281	**************************************************************************/
282	static void
283	nfs_readlink_req (void)
284	{
285	uint32_t data[1024];
286	uint32_t *p;
287	int len;
288
289	p = &(data[0]);
290	p = (uint32_t )rpc_add_credentials ((long )p);
291
292	memcpy (p, filefh, NFS_FHSIZE);
293	p += (NFS_FHSIZE / 4);
294
295	len = (uint32_t )p - (uint32_t )&(data[0]);
296
297	rpc_req (PROG_NFS, NFS_READLINK, data, len);
298	}
299
300	/**************************************************************************
301	NFS_LOOKUP - Lookup Pathname
302	**************************************************************************/
303	static void
304	nfs_lookup_req (char *fname)
305	{
306	uint32_t data[1024];
307	uint32_t *p;
308	int len;
309	int fnamelen;
310
311	fnamelen = strlen (fname);
312
313	p = &(data[0]);
314	p = (uint32_t )rpc_add_credentials ((long )p);
315
316	memcpy (p, dirfh, NFS_FHSIZE);
317	p += (NFS_FHSIZE / 4);
318	*p++ = htonl(fnamelen);
319	if (fnamelen & 3) *(p + fnamelen / 4) = 0;
320	memcpy (p, fname, fnamelen);
321	p += (fnamelen + 3) / 4;
322
323	len = (uint32_t )p - (uint32_t )&(data[0]);
324
325	rpc_req (PROG_NFS, NFS_LOOKUP, data, len);
326	}
327
328	/**************************************************************************
329	NFS_READ - Read File on NFS Server
330	**************************************************************************/
331	static void
332	nfs_read_req (int offset, int readlen)
333	{
334	uint32_t data[1024];
335	uint32_t *p;
336	int len;
337
338	p = &(data[0]);
339	p = (uint32_t )rpc_add_credentials ((long )p);
340
341	memcpy (p, filefh, NFS_FHSIZE);
342	p += (NFS_FHSIZE / 4);
343	*p++ = htonl(offset);
344	*p++ = htonl(readlen);
345	*p++ = 0;
346
347	len = (uint32_t )p - (uint32_t )&(data[0]);
348
349	rpc_req (PROG_NFS, NFS_READ, data, len);
350	}
351
352	/**************************************************************************
353	RPC request dispatcher
354	**************************************************************************/
355
356	static void
357	NfsSend (void)
358	{
359	#ifdef NFS_DEBUG
360	printf ("%s\n", __FUNCTION__);
361	#endif
362
363	switch (NfsState) {
364	case STATE_PRCLOOKUP_PROG_MOUNT_REQ:
365	rpc_lookup_req (PROG_MOUNT, 1);
366	break;
367	case STATE_PRCLOOKUP_PROG_NFS_REQ:
368	rpc_lookup_req (PROG_NFS, 2);
369	break;
370	case STATE_MOUNT_REQ:
371	nfs_mount_req (nfs_path);
372	break;
373	case STATE_UMOUNT_REQ:
374	nfs_umountall_req ();
375	break;
376	case STATE_LOOKUP_REQ:
377	nfs_lookup_req (nfs_filename);
378	break;
379	case STATE_READ_REQ:
380	nfs_read_req (nfs_offset, nfs_len);
381	break;
382	case STATE_READLINK_REQ:
383	nfs_readlink_req ();
384	break;
385	}
386	}
387
388	/**************************************************************************
389	Handlers for the reply from server
390	**************************************************************************/
391
392	static int
393	rpc_lookup_reply (int prog, uchar *pkt, unsigned len)
394	{
395	struct rpc_t rpc_pkt;
396
397	memcpy ((unsigned char *)&rpc_pkt, pkt, len);
398
399	#ifdef NFS_DEBUG
400	printf ("%s\n", __FUNCTION__);
401	#endif
402
c3f9d493 WD	403	if (ntohl(rpc_pkt.u.reply.id) != rpc_id)
	404	return -1;
	405
cbd8a35c WD	406	if (rpc_pkt.u.reply.rstatus \|\|
cbd8a35c WD	407	rpc_pkt.u.reply.verifier \|\|
cbd8a35c	408	rpc_pkt.u.reply.astatus) {
c3f9d493	409	return -1;
cbd8a35c WD	410	}
	411
	412	switch (prog) {
	413	case PROG_MOUNT:
	414	NfsSrvMountPort = ntohl(rpc_pkt.u.reply.data[0]);
	415	break;
	416	case PROG_NFS:
	417	NfsSrvNfsPort = ntohl(rpc_pkt.u.reply.data[0]);
	418	break;
	419	}
	420
	421	return 0;
	422	}
	423
	424	static int
	425	nfs_mount_reply (uchar *pkt, unsigned len)
	426	{
	427	struct rpc_t rpc_pkt;
	428
	429	#ifdef NFS_DEBUG
	430	printf ("%s\n", __FUNCTION__);
	431	#endif
	432
	433	memcpy ((unsigned char *)&rpc_pkt, pkt, len);
	434
c3f9d493 WD	435	if (ntohl(rpc_pkt.u.reply.id) != rpc_id)
	436	return -1;
	437
cbd8a35c WD	438	if (rpc_pkt.u.reply.rstatus \|\|
	439	rpc_pkt.u.reply.verifier \|\|
	440	rpc_pkt.u.reply.astatus \|\|
	441	rpc_pkt.u.reply.data[0]) {
	442	return -1;
	443	}
	444
	445	fs_mounted = 1;
	446	memcpy (dirfh, rpc_pkt.u.reply.data + 1, NFS_FHSIZE);
	447
	448	return 0;
	449	}
	450
	451	static int
	452	nfs_umountall_reply (uchar *pkt, unsigned len)
	453	{
	454	struct rpc_t rpc_pkt;
	455
	456	#ifdef NFS_DEBUG
	457	printf ("%s\n", __FUNCTION__);
	458	#endif
	459
	460	memcpy ((unsigned char *)&rpc_pkt, pkt, len);
	461
c3f9d493 WD	462	if (ntohl(rpc_pkt.u.reply.id) != rpc_id)
	463	return -1;
	464
cbd8a35c WD	465	if (rpc_pkt.u.reply.rstatus \|\|
	466	rpc_pkt.u.reply.verifier \|\|
	467	rpc_pkt.u.reply.astatus) {
	468	return -1;
	469	}
	470
	471	fs_mounted = 0;
	472	memset (dirfh, 0, sizeof(dirfh));
	473
	474	return 0;
	475	}
	476
	477	static int
	478	nfs_lookup_reply (uchar *pkt, unsigned len)
	479	{
	480	struct rpc_t rpc_pkt;
	481
	482	#ifdef NFS_DEBUG
	483	printf ("%s\n", __FUNCTION__);
	484	#endif
	485
	486	memcpy ((unsigned char *)&rpc_pkt, pkt, len);
	487
c3f9d493 WD	488	if (ntohl(rpc_pkt.u.reply.id) != rpc_id)
	489	return -1;
	490
cbd8a35c WD	491	if (rpc_pkt.u.reply.rstatus \|\|
	492	rpc_pkt.u.reply.verifier \|\|
	493	rpc_pkt.u.reply.astatus \|\|
	494	rpc_pkt.u.reply.data[0]) {
	495	return -1;
	496	}
	497
	498	memcpy (filefh, rpc_pkt.u.reply.data + 1, NFS_FHSIZE);
	499
	500	return 0;
	501	}
	502
	503	static int
	504	nfs_readlink_reply (uchar *pkt, unsigned len)
	505	{
	506	struct rpc_t rpc_pkt;
	507	int rlen;
	508
	509	#ifdef NFS_DEBUG
	510	printf ("%s\n", __FUNCTION__);
	511	#endif
	512
	513	memcpy ((unsigned char *)&rpc_pkt, pkt, len);
	514
c3f9d493 WD	515	if (ntohl(rpc_pkt.u.reply.id) != rpc_id)
	516	return -1;
	517
cbd8a35c WD	518	if (rpc_pkt.u.reply.rstatus \|\|
	519	rpc_pkt.u.reply.verifier \|\|
	520	rpc_pkt.u.reply.astatus \|\|
	521	rpc_pkt.u.reply.data[0]) {
	522	return -1;
	523	}
	524
	525	rlen = ntohl (rpc_pkt.u.reply.data[1]); /* new path length */
	526
	527	if (((char )&(rpc_pkt.u.reply.data[2])) != '/') {
	528	int pathlen;
	529	strcat (nfs_path, "/");
	530	pathlen = strlen(nfs_path);
	531	memcpy (nfs_path+pathlen, (uchar *)&(rpc_pkt.u.reply.data[2]), rlen);
	532	nfs_path[pathlen+rlen+1] = 0;
	533	} else {
	534	memcpy (nfs_path, (uchar *)&(rpc_pkt.u.reply.data[2]), rlen);
	535	nfs_path[rlen] = 0;
	536	}
	537	return 0;
	538	}
	539
	540	static int
	541	nfs_read_reply (uchar *pkt, unsigned len)
	542	{
	543	struct rpc_t rpc_pkt;
	544	int rlen;
	545
	546	#ifdef NFS_DEBUG_nop
	547	printf ("%s\n", __FUNCTION__);
	548	#endif
	549
11dadd54	550	memcpy ((uchar *)&rpc_pkt, pkt, sizeof(rpc_pkt.u.reply));
cbd8a35c	551
c3f9d493 WD	552	if (ntohl(rpc_pkt.u.reply.id) != rpc_id)
	553	return -1;
	554
cbd8a35c WD	555	if (rpc_pkt.u.reply.rstatus \|\|
	556	rpc_pkt.u.reply.verifier \|\|
	557	rpc_pkt.u.reply.astatus \|\|
	558	rpc_pkt.u.reply.data[0]) {
	559	if (rpc_pkt.u.reply.rstatus) {
	560	return -9999;
	561	}
	562	if (rpc_pkt.u.reply.astatus) {
	563	return -9999;
	564	}
	565	return -ntohl(rpc_pkt.u.reply.data[0]);;
	566	}
	567
	568	if ((nfs_offset!=0) && !((nfs_offset) % (NFS_READ_SIZE/210HASHES_PER_LINE))) {
	569	puts ("\n\t ");
	570	}
	571	if (!(nfs_offset % ((NFS_READ_SIZE/2)*10))) {
	572	putc ('#');
	573	}
	574
	575	rlen = ntohl(rpc_pkt.u.reply.data[18]);
23a7a32d WD	576	if ( store_block ((uchar *)pkt+sizeof(rpc_pkt.u.reply), nfs_offset, rlen) )
23a7a32d WD	577	return -9999;
cbd8a35c WD	578
	579	return rlen;
	580	}
	581
	582	/**************************************************************************
	583	Interfaces of U-BOOT
	584	**************************************************************************/
	585
a5725fab WD	586	static void
	587	NfsTimeout (void)
	588	{
	589	puts ("Timeout\n");
	590	NetState = NETLOOP_FAIL;
	591	return;
	592	}
	593
cbd8a35c WD	594	static void
	595	NfsHandler (uchar *pkt, unsigned dest, unsigned src, unsigned len)
	596	{
	597	int rlen;
	598
	599	#ifdef NFS_DEBUG
	600	printf ("%s\n", __FUNCTION__);
	601	#endif
	602
	603	if (dest != NfsOurPort) return;
	604
	605	switch (NfsState) {
	606	case STATE_PRCLOOKUP_PROG_MOUNT_REQ:
	607	rpc_lookup_reply (PROG_MOUNT, pkt, len);
	608	NfsState = STATE_PRCLOOKUP_PROG_NFS_REQ;
	609	NfsSend ();
	610	break;
	611
	612	case STATE_PRCLOOKUP_PROG_NFS_REQ:
	613	rpc_lookup_reply (PROG_NFS, pkt, len);
	614	NfsState = STATE_MOUNT_REQ;
	615	NfsSend ();
	616	break;
	617
	618	case STATE_MOUNT_REQ:
	619	if (nfs_mount_reply(pkt, len)) {
	620	puts ("*** ERROR: Cannot mount\n");
	621	/* just to be sure... */
	622	NfsState = STATE_UMOUNT_REQ;
	623	NfsSend ();
	624	} else {
	625	NfsState = STATE_LOOKUP_REQ;
	626	NfsSend ();
	627	}
	628	break;
	629
	630	case STATE_UMOUNT_REQ:
	631	if (nfs_umountall_reply(pkt, len)) {
	632	puts ("*** ERROR: Cannot umount\n");
	633	NetState = NETLOOP_FAIL;
	634	} else {
a084f7da	635	puts ("\ndone\n");
23a7a32d	636	NetState = NfsDownloadState;
cbd8a35c WD	637	}
	638	break;
	639
	640	case STATE_LOOKUP_REQ:
	641	if (nfs_lookup_reply(pkt, len)) {
	642	puts ("*** ERROR: File lookup fail\n");
	643	NfsState = STATE_UMOUNT_REQ;
	644	NfsSend ();
	645	} else {
	646	NfsState = STATE_READ_REQ;
	647	nfs_offset = 0;
	648	nfs_len = NFS_READ_SIZE;
	649	NfsSend ();
	650	}
	651	break;
	652
	653	case STATE_READLINK_REQ:
	654	if (nfs_readlink_reply(pkt, len)) {
	655	puts ("*** ERROR: Symlink fail\n");
	656	NfsState = STATE_UMOUNT_REQ;
	657	NfsSend ();
	658	} else {
	659	#ifdef NFS_DEBUG
	660	printf ("Symlink --> %s\n", nfs_path);
	661	#endif
	662	nfs_filename = basename (nfs_path);
	663	nfs_path = dirname (nfs_path);
	664
	665	NfsState = STATE_MOUNT_REQ;
	666	NfsSend ();
	667	}
	668	break;
	669
	670	case STATE_READ_REQ:
	671	rlen = nfs_read_reply (pkt, len);
a5725fab	672	NetSetTimeout (NFS_TIMEOUT * CFG_HZ, NfsTimeout);
cbd8a35c WD	673	if (rlen > 0) {
	674	nfs_offset += rlen;
	675	NfsSend ();
	676	}
	677	else if ((rlen == -NFSERR_ISDIR)\|\|(rlen == -NFSERR_INVAL)) {
	678	/* symbolic link */
	679	NfsState = STATE_READLINK_REQ;
	680	NfsSend ();
	681	} else {
23a7a32d	682	if ( ! rlen ) NfsDownloadState = NETLOOP_SUCCESS;
cbd8a35c WD	683	NfsState = STATE_UMOUNT_REQ;
	684	NfsSend ();
	685	}
	686	break;
	687	}
	688	}
	689
cbd8a35c WD	690
	691	void
	692	NfsStart (void)
	693	{
	694	#ifdef NFS_DEBUG
	695	printf ("%s\n", __FUNCTION__);
	696	#endif
23a7a32d	697	NfsDownloadState = NETLOOP_FAIL;
cbd8a35c WD	698
	699	NfsServerIP = NetServerIP;
	700	nfs_path = (char *)nfs_path_buff;
	701
	702	if (nfs_path == NULL) {
	703	NetState = NETLOOP_FAIL;
	704	puts ("*** ERROR: Fail allocate memory\n");
	705	return;
	706	}
	707
	708	if (BootFile[0] == '\0') {
cbd8a35c	709	sprintf (default_filename, "/nfsroot/%02lX%02lX%02lX%02lX.img",
c43352cc WD	710	NetOurIP & 0xFF,
	711	(NetOurIP >> 8) & 0xFF,
	712	(NetOurIP >> 16) & 0xFF,
	713	(NetOurIP >> 24) & 0xFF );
cbd8a35c WD	714	strcpy (nfs_path, default_filename);
	715
	716	printf ("*** Warning: no boot file name; using '%s'\n",
	717	nfs_path);
	718	} else {
	719	char *p=BootFile;
	720
	721	p = strchr (p, ':');
	722
	723	if (p != NULL) {
	724	NfsServerIP = string_to_ip (BootFile);
	725	++p;
	726	strcpy (nfs_path, p);
	727	} else {
	728	strcpy (nfs_path, BootFile);
	729	}
	730	}
	731
	732	nfs_filename = basename (nfs_path);
	733	nfs_path = dirname (nfs_path);
	734
	735	#if defined(CONFIG_NET_MULTI)
	736	printf ("Using %s device\n", eth_get_name());
	737	#endif
	738
	739	puts ("File transfer via NFS from server "); print_IPaddr (NfsServerIP);
	740	puts ("; our IP address is "); print_IPaddr (NetOurIP);
	741
	742	/* Check if we need to send across this subnet */
	743	if (NetOurGatewayIP && NetOurSubnetMask) {
	744	IPaddr_t OurNet = NetOurIP & NetOurSubnetMask;
	745	IPaddr_t ServerNet = NetServerIP & NetOurSubnetMask;
	746
	747	if (OurNet != ServerNet) {
	748	puts ("; sending through gateway ");
	749	print_IPaddr (NetOurGatewayIP) ;
	750	}
	751	}
4b9206ed	752	printf ("\nFilename '%s/%s'.", nfs_path, nfs_filename);
cbd8a35c WD	753
	754	if (NetBootFileSize) {
	755	printf (" Size is 0x%x Bytes = ", NetBootFileSize<<9);
	756	print_size (NetBootFileSize<<9, "");
	757	}
4b9206ed WD	758	printf ("\nLoad address: 0x%lx\n"
4b9206ed WD	759	"Loading: *\b", load_addr);
cbd8a35c WD	760
	761	NetSetTimeout (NFS_TIMEOUT * CFG_HZ, NfsTimeout);
	762	NetSetHandler (NfsHandler);
	763
cbd8a35c WD	764	NfsTimeoutCount = 0;
	765	NfsState = STATE_PRCLOOKUP_PROG_MOUNT_REQ;
	766
	767	/NfsOurPort = 4096 + (get_ticks() % 3072);/
	768	/FIX ME !!!/
	769	NfsOurPort = 1000;
	770
	771	/* zero out server ether in case the server ip has changed */
	772	memset (NetServerEther, 0, 6);
	773
	774	NfsSend ();
	775	}
	776
643d1ab2	777	#endif