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/*
* support/nfs/rcpdispatch.c
*
* Generic RPC dispatcher.
*
* Copyright (C) 1995, 1996, Olaf Kirch <okir@monad.swb.de>
*/
#include "config.h"
#include <stdio.h>
#include <rpc/rpc.h>
#include <rpc/pmap_clnt.h>
#include <signal.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <string.h>
#include "rpcmisc.h"
#include "xlog.h"
void
rpc_dispatch(struct svc_req *rqstp, SVCXPRT *transp,
struct rpc_dtable *dtable, int nvers,
void *argp, void *resp)
{
struct rpc_dentry *dent;
if (rqstp->rq_vers > nvers) {
svcerr_progvers(transp, 1, nvers);
return;
}
dtable += (rqstp->rq_vers - 1);
if (rqstp->rq_proc > dtable->nproc) {
svcerr_noproc(transp);
return;
}
dent = dtable->entries + rqstp->rq_proc;
if (dent->func == NULL) {
svcerr_noproc(transp);
return;
}
memset(argp, 0, dent->xdr_arg_size);
memset(resp, 0, dent->xdr_res_size);
if (!svc_getargs(transp, dent->xdr_arg_fn, argp)) {
svcerr_decode(transp);
return;
}
if ((dent->func)(rqstp, argp, resp) && resp != 0) {
if (!svc_sendreply(transp, dent->xdr_res_fn, (caddr_t)resp))
svcerr_systemerr(transp);
}
if (!svc_freeargs(transp, dent->xdr_arg_fn, argp)) {
xlog(L_ERROR, "failed to free RPC arguments");
exit (2);
}
}
#if 0
/*
* This is our replacement for svc_run. It turns off some signals while
* executing the server procedures to avoid nasty race conditions.
*/
void
rpc_svcrun(fd_set *morefds, void (*func)(int fd))
{
sigset_t block, current;
fd_set readfds;
for (;;) {
readfds = svc_fdset;
if (morefds) {
int i;
/* most efficient */
for (i = 0; i < FD_SETSIZE; i++)
if (FD_ISSET(i, morefds))
FD_SET(i, &readfs);
}
switch (select(FD_SETSIZE, &readfds, NULL, NULL, NULL)) {
case -1:
if (errno == EINTR)
continue;
xlog(L_ERROR, "svc_run: - select failed");
break;
case 0:
continue;
default:
if (morefds) {
int i;
/* most efficient */
for (i = 0; i < FD_SETSIZE; i++)
if (FD_ISSET(i, morefds) &&
FD_ISSET(i, &readfds))
func(i);
}
sigemptyset(&block);
sigaddset(&block, SIGALRM);
sigaddset(&block, SIGVTALRM);
sigaddset(&block, SIGIO);
sigprocmask(SIG_BLOCK, &block, ¤t);
svc_getreqset(&readfds);
sigprocmask(SIG_SETMASK, ¤t, NULL);
}
}
}
#endif
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