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/***********************************************************************
Remote Procedure Call Support Routines
Author: Martin Renters
Date: Oct/1994
***********************************************************************/
#include "netboot.h"
int rpc_id;
extern char packet[];
extern struct nfs_diskless nfsdiskless;
extern int hostnamelen;
/***************************************************************************
RPCLOOKUP: Lookup RPC Port numbers
***************************************************************************/
rpclookup(addr, prog, ver)
int addr, prog, ver;
{
struct rpc_t buf, *rpc;
char *rpcptr;
int retries = MAX_RPC_RETRIES;
rpcptr = sprintf(&buf.u.data,"%L%L%L%L%L%L%L%L%L%L%L%L%L%L",
rpc_id, MSG_CALL, 2, PROG_PORTMAP, 2, PORTMAP_LOOKUP,
0, 0, 0, 0, prog, ver, IP_UDP, 0);
while(retries--) {
udp_transmit(arptable[addr].ipaddr, RPC_SOCKET,
SUNRPC, rpcptr - (char *)&buf, &buf);
if (await_reply(AWAIT_RPC, rpc_id, NULL)) {
rpc = (struct rpc_t *)&packet[ETHER_HDR_LEN];
if (rpc->u.reply.rstatus == rpc->u.reply.verifier ==
rpc->u.reply.astatus == 0)
return(ntohl(rpc->u.reply.data[0]));
else {
rpc_err(rpc);
return(-1);
}
}
}
return(-1);
}
/***************************************************************************
NFS_MOUNT: Mount an NFS Filesystem
***************************************************************************/
nfs_mount(server, port, path, fh)
int server;
int port;
char *path;
char *fh;
{
struct rpc_t buf, *rpc;
char *rpcptr;
int retries = MAX_RPC_RETRIES;
rpcptr = sprintf(&buf.u.data,"%L%L%L%L%L%L%L%L%L%S%L%L%L%L%L%L%L%S",
rpc_id, MSG_CALL, 2, PROG_MOUNT, 1, MOUNT_ADDENTRY,
1, hostnamelen + 28,0,&nfsdiskless.my_hostnam,0,0,2,0,0,0,0,
path);
while(retries--) {
udp_transmit(arptable[server].ipaddr, RPC_SOCKET,
port, rpcptr - (char *)&buf, &buf);
if (await_reply(AWAIT_RPC, rpc_id, NULL)) {
rpc = (struct rpc_t *)&packet[ETHER_HDR_LEN];
if (rpc->u.reply.rstatus || rpc->u.reply.verifier ||
rpc->u.reply.astatus || rpc->u.reply.data[0]) {
rpc_err(rpc);
return(-(ntohl(rpc->u.reply.data[0])));
} else {
bcopy(&rpc->u.reply.data[1],fh, 32);
return(0);
}
}
}
return(-1);
}
/***************************************************************************
NFS_LOOKUP: Lookup Pathname
***************************************************************************/
nfs_lookup(server, port, fh, path, file_fh)
int server;
int port;
char *fh;
char *path;
char *file_fh;
{
struct rpc_t buf, *rpc;
char *rpcptr;
int retries = MAX_RPC_RETRIES;
rpcptr = sprintf(&buf.u.data,"%L%L%L%L%L%L%L%L%L%S%L%L%L%L%L%L%L%M%S",
rpc_id, MSG_CALL, 2, PROG_NFS, 2, NFS_LOOKUP,
1, hostnamelen + 28,0,&nfsdiskless.my_hostnam,0,0,2,0,0,0,0,
32, fh, path);
while(retries--) {
udp_transmit(arptable[server].ipaddr, RPC_SOCKET,
port, rpcptr - (char *)&buf, &buf);
if (await_reply(AWAIT_RPC, rpc_id, NULL)) {
rpc = (struct rpc_t *)&packet[ETHER_HDR_LEN];
if (rpc->u.reply.rstatus || rpc->u.reply.verifier ||
rpc->u.reply.astatus || rpc->u.reply.data[0]) {
rpc_err(rpc);
return(-(ntohl(rpc->u.reply.data[0])));
} else {
bcopy(&rpc->u.reply.data[1],file_fh, 32);
return(0);
}
}
}
return(-1);
}
/***************************************************************************
NFS_READ: Read File
***************************************************************************/
nfs_read(server, port, fh, offset, len, buffer)
int server;
int port;
char *fh;
int offset, len;
char *buffer;
{
struct rpc_t buf, *rpc;
char *rpcptr;
int retries = MAX_RPC_RETRIES;
int rlen;
rpcptr = sprintf(&buf.u.data,
"%L%L%L%L%L%L%L%L%L%S%L%L%L%L%L%L%L%M%L%L%L",
rpc_id, MSG_CALL, 2, PROG_NFS, 2, NFS_READ,
1, hostnamelen + 28,0,&nfsdiskless.my_hostnam,0,0,2,0,0,0,0,
32, fh, offset, len, 0);
while(retries--) {
udp_transmit(arptable[server].ipaddr, RPC_SOCKET,
port, rpcptr - (char *)&buf, &buf);
if (await_reply(AWAIT_RPC, rpc_id, NULL)) {
rpc = (struct rpc_t *)&packet[ETHER_HDR_LEN];
if (rpc->u.reply.rstatus || rpc->u.reply.verifier ||
rpc->u.reply.astatus || rpc->u.reply.data[0]) {
rpc_err(rpc);
return(-(ntohl(rpc->u.reply.data[0])));
} else {
rlen = ntohl(rpc->u.reply.data[18]);
if (len < rlen) rlen = len;
if (len > rlen) printf("short read\r\n");
bcopy(&rpc->u.reply.data[19], buffer, rlen);
return(rlen);
}
}
}
return(-1);
}
/***************************************************************************
RPC_ERR - Print RPC Errors
***************************************************************************/
rpc_err(rpc)
struct rpc_t *rpc;
{
int err = ntohl(rpc->u.reply.data[0]);
printf("***RPC Error: (%d,%d,%d):\r\n ",
ntohl(rpc->u.reply.rstatus),
ntohl(rpc->u.reply.verifier),
ntohl(rpc->u.reply.astatus));
}
nfs_err(err)
int err;
{
err = -err;
if (err == NFSERR_PERM) printf("Not owner");
else if (err == NFSERR_NOENT) printf("No such file or directory");
else if (err == NFSERR_ACCES) printf("Permission denied");
else printf("Error %d",err);
printf("\r\n");
}
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