fix off by one errors in devpoll; from Ian Bell

svn:r921

ChangeLog

@@ -119,6 +119,8 @@ Changes in current version:
  o Fix a bug where deleting signals with the kqueue backend would cause subsequent adds to fail
  o Support multiple events listening on the same signal; make signals regular events that go on the same event queue; problem report by Alexander Drozdov.
  o Fix a problem with epoll() and reinit; problem report by Alexander Drozdov.	
+ o Fix off-by-one errors in devpoll; from Ian Bell
+
 Changes in 1.4.0:
  o allow \r or \n individually to separate HTTP headers instead of the standard "\r\n"; from Charles Kerr.
  o demote most http warnings to debug messages

devpoll.c

@@ -137,7 +137,7 @@ devpoll_init(struct event_base *base)
 
 	if (getrlimit(RLIMIT_NOFILE, &rl) == 0 &&
 	    rl.rlim_cur != RLIM_INFINITY)
-		nfiles = rl.rlim_cur - 1;
+		nfiles = rl.rlim_cur;
 
 	/* Initialize the kernel queue */
 	if ((dpfd = open("/dev/poll", O_RDWR)) == -1) {
@@ -185,12 +185,12 @@ devpoll_recalc(struct event_base *base, void *arg, int max)
 {
 	struct devpollop *devpollop = arg;
 
-	if (max > devpollop->nfds) {
+	if (max >= devpollop->nfds) {
 		struct evdevpoll *fds;
 		int nfds;
 
 		nfds = devpollop->nfds;
-		while (nfds < max)
+		while (nfds <= max)
 			nfds <<= 1;
 
 		fds = mm_realloc(devpollop->fds, nfds * sizeof(struct evdevpoll));