File 0006-don-t-use-svc_fdset.patch of Package rpcbind.12560

From e97a3d42704ac83453cc85d09ed48eb9755696a5 Mon Sep 17 00:00:00 2001
From: Thorsten Kukuk <kukuk@thkukuk.de>
Date: Fri, 19 Feb 2016 15:55:38 +0100
Subject: [PATCH 1/1] rpcbind and libtirpc are both using poll in svc_run(),
 but rpcbind used the old svc_fdset interface for this. This limits the
 possible connections to 1024, while both could handle much more. rpcbind is
 now accessing directly the svc_pollfd data of libtirpc.

Signed-off-by: Thorsten Kukuk <kukuk@thkukuk.de>
---
 src/rpcb_svc_com.c | 48 ++++++++++++++++--------------------------------
 1 file changed, 16 insertions(+), 32 deletions(-)

diff --git a/src/rpcb_svc_com.c b/src/rpcb_svc_com.c
index 22d6c84..148fe42 100644
--- a/src/rpcb_svc_com.c
+++ b/src/rpcb_svc_com.c
@@ -536,10 +536,6 @@ create_rmtcall_fd(struct netconfig *nconf)
 		rmttail->next = rmt;
 		rmttail = rmt;
 	}
-	/* XXX not threadsafe */
-	if (fd > svc_maxfd)
-		svc_maxfd = fd;
-	FD_SET(fd, &svc_fdset);
 	return (fd);
 }
 
@@ -1056,9 +1052,6 @@ free_slot_by_index(int index)
 	fi = &FINFO[index];
 	if (fi->flag & FINFO_ACTIVE) {
 		netbuffree(fi->caller_addr);
-		/* XXX may be too big, but can't access xprt array here */
-		if (fi->forward_fd >= svc_maxfd)
-			svc_maxfd--;
 		free(fi->uaddr);
 		fi->flag &= ~FINFO_ACTIVE;
 		rpcb_rmtcalls--;
@@ -1097,35 +1090,28 @@ netbuffree(struct netbuf *ap)
 }
 
 
-#define	MASKVAL	(POLLIN | POLLPRI | POLLRDNORM | POLLRDBAND)
-extern bool_t __svc_clean_idle(fd_set *, int, bool_t);
-
 void
 my_svc_run()
 {
-	size_t nfds;
-	struct pollfd pollfds[FD_SETSIZE];
 	int poll_ret, check_ret;
 	int n;
-#ifdef SVC_RUN_DEBUG
-	int i;
-#endif
-	register struct pollfd	*p;
-	fd_set cleanfds;
 
 	for (;;) {
-		p = pollfds;
-		for (n = 0; n <= svc_maxfd; n++) {
-			if (FD_ISSET(n, &svc_fdset)) {
-				p->fd = n;
-				p->events = MASKVAL;
-				p++;
-			}
-		}
-		nfds = p - pollfds;
-		poll_ret = 0;
+	        struct pollfd my_pollfd[svc_max_pollfd];
+		int i;
+
+		if (svc_max_pollfd == 0 && svc_pollfd == NULL)
+		  return;
+
+
+		for (i = 0; i < svc_max_pollfd; ++i)
+		  {
+		    my_pollfd[i].fd = svc_pollfd[i].fd;
+		    my_pollfd[i].events = svc_pollfd[i].events;
+		    my_pollfd[i].revents = 0;
+		  }
 
-		switch (poll_ret = poll(pollfds, nfds, 30 * 1000)) {
+		switch (poll_ret = poll(my_pollfd, svc_max_pollfd, 30 * 1000)) {
 		case -1:
 			/*
 			 * We ignore all errors, continuing with the assumption
@@ -1133,8 +1119,6 @@ my_svc_run()
 			 * other outside event) and not caused by poll().
 			 */
 		case 0:
-			cleanfds = svc_fdset;
-			__svc_clean_idle(&cleanfds, 30, FALSE);
 			continue;
 		default:
 			/*
@@ -1144,10 +1128,10 @@ my_svc_run()
 			 * don't call svc_getreq_poll.  Otherwise, there
 			 * must be another so we must call svc_getreq_poll.
 			 */
-			if ((check_ret = check_rmtcalls(pollfds, nfds)) ==
+			if ((check_ret = check_rmtcalls(my_pollfd, svc_max_pollfd)) ==
 			    poll_ret)
 				continue;
-			svc_getreq_poll(pollfds, poll_ret-check_ret);
+			svc_getreq_poll(my_pollfd, poll_ret-check_ret);
 		}
 	}
 }
-- 
1.8.5.6