loop: Use size_t for eloop.count

This is more consistent with the other eloop registrations and avoids a
theoretical integer overflow with 16-bit int should more than 32767
sockets/signals/events be registered.

Signed-off-by: Jouni Malinen <j@w1.fi>

src/utils/eloop.c

@@ -77,10 +77,10 @@ struct eloop_sock_table {
 struct eloop_data {
 	int max_sock;
 
-	int count; /* sum of all table counts */
+	size_t count; /* sum of all table counts */
 #ifdef CONFIG_ELOOP_POLL
-	int max_pollfd_map; /* number of pollfds_map currently allocated */
-	int max_poll_fds; /* number of pollfds currently allocated */
+	size_t max_pollfd_map; /* number of pollfds_map currently allocated */
+	size_t max_poll_fds; /* number of pollfds currently allocated */
 	struct pollfd *pollfds;
 	struct pollfd **pollfds_map;
 #endif /* CONFIG_ELOOP_POLL */
@@ -90,12 +90,12 @@ struct eloop_data {
 #endif /* CONFIG_ELOOP_EPOLL || CONFIG_ELOOP_KQUEUE */
 #ifdef CONFIG_ELOOP_EPOLL
 	int epollfd;
-	int epoll_max_event_num;
+	size_t epoll_max_event_num;
 	struct epoll_event *epoll_events;
 #endif /* CONFIG_ELOOP_EPOLL */
 #ifdef CONFIG_ELOOP_KQUEUE
 	int kqueuefd;
-	int kqueue_nevents;
+	size_t kqueue_nevents;
 	struct kevent *kqueue_events;
 #endif /* CONFIG_ELOOP_KQUEUE */
 	struct eloop_sock_table readers;
@@ -268,7 +268,7 @@ static int eloop_sock_table_add_sock(struct eloop_sock_table *table,
 #endif /* CONFIG_ELOOP_EPOLL */
 #if defined(CONFIG_ELOOP_EPOLL) || defined(CONFIG_ELOOP_KQUEUE)
 	struct eloop_sock *temp_table;
-	int next;
+	size_t next;
 #endif /* CONFIG_ELOOP_EPOLL || CONFIG_ELOOP_KQUEUE */
 	struct eloop_sock *tmp;
 	int new_max_sock;
@@ -282,7 +282,7 @@ static int eloop_sock_table_add_sock(struct eloop_sock_table *table,
 		return -1;
 
 #ifdef CONFIG_ELOOP_POLL
-	if (new_max_sock >= eloop.max_pollfd_map) {
+	if ((size_t) new_max_sock >= eloop.max_pollfd_map) {
 		struct pollfd **nmap;
 		nmap = os_realloc_array(eloop.pollfds_map, new_max_sock + 50,
 					sizeof(struct pollfd *));
@@ -295,7 +295,8 @@ static int eloop_sock_table_add_sock(struct eloop_sock_table *table,
 
 	if (eloop.count + 1 > eloop.max_poll_fds) {
 		struct pollfd *n;
-		int nmax = eloop.count + 1 + 50;
+		size_t nmax = eloop.count + 1 + 50;
+
 		n = os_realloc_array(eloop.pollfds, nmax,
 				     sizeof(struct pollfd));
 		if (n == NULL)