1 files changed, 122 insertions, 0 deletions
diff --git a/ldap/servers/slapd/poll_using_select.c b/ldap/servers/slapd/poll_using_select.c
new file mode 100644
index 00000000..5c25a57b
--- /dev/null
+++ b/ldap/servers/slapd/poll_using_select.c
@@ -0,0 +1,122 @@
+/** BEGIN COPYRIGHT BLOCK
+ * Copyright 2001 Sun Microsystems, Inc.
+ * Portions copyright 1999, 2001-2003 Netscape Communications Corporation.
+ * All rights reserved.
+ * END COPYRIGHT BLOCK **/
+/*
+ * poll_using_select.c
+ *
+ * poll_using_select() is an implementation of poll using select.
+ * I borrowed this code from the client source, ns/nspr/src/mdunix.c
+ * from the Nav404_OEM_BRANCH
+ * 
+ * The reason we need this is on Linux 2.0 (and possibly other platforms)
+ * there is no poll.  ldapserver/ldap/servers/slapd/daemon.c calls poll
+ *
+ * In Linux 2.1 there will be a native poll, so this will go away for Linux
+ * but other platforms may need it.
+ *
+ * 1-30-98 
+ * sspitzer
+ */
+#include "poll_using_select.h"
+
+int
+poll_using_select(struct my_pollfd *filed, int nfds, int timeout)
+{
+    int width;
+    fd_set rd;
+    fd_set wr;
+    fd_set ex;
+    struct timeval tv;
+    int a, b, retval;
+
+#ifdef DEBUG_POLL_AS_SELECT
+    LDAPDebug(LDAP_DEBUG_ANY, "poll convert nfds=%d, timeout=%d\n", nfds, timeout,0);
+#endif /* DEBUG_POLL_AS_SELECT */
+
+    FD_ZERO( &rd );
+    FD_ZERO( &wr );
+    FD_ZERO( &ex );
+
+    /*
+     * If the fd member of all pollfd structures is less than 0,
+     * the poll() function will return 0 and have no other results.
+     */
+    for(a=0, b=0; a<nfds; a++){
+	if( filed[a].fd >= 0 ) b++;
+    }
+    if( b == 0 ){ return 0; }
+
+    for( width=0,a=0; a<nfds; a++ ){
+	short temp_events;
+
+#ifdef DEBUG_POLL_AS_SELECT
+	if (filed[a].events != 0) {
+		LDAPDebug(LDAP_DEBUG_ANY, "poll events = %d for fd=%d\n", filed[a].events, filed[a].fd,0);
+	}
+#endif /* DEBUG_POLL_AS_SELECT */
+
+	temp_events = filed[a].events;
+
+	filed[a].revents = 0;
+
+	if( temp_events & POLLIN  ) FD_SET( filed[a].fd, &rd );
+	if( temp_events & POLLOUT ) FD_SET( filed[a].fd, &wr );
+	if( temp_events & POLLPRI ) FD_SET( filed[a].fd, &ex );
+
+	temp_events &= ~(POLLIN|POLLOUT|POLLPRI);
+
+#ifdef DEBUG_POLL_AS_SELECT
+	if( temp_events != 0 ){
+	    LDAPDebug(LDAP_DEBUG_ANY, "Unhandled poll event type=0x%x on FD(%d)\n",filed[a].events,filed[a].fd,0);
+	}
+#endif /* DEBUG_POLL_AS_SELECT */
+
+	width = width>(filed[a].fd+1)?width:(filed[a].fd+1);
+    }
+
+    if( timeout != -1 ){
+	tv.tv_sec = timeout/MSECONDS;
+	tv.tv_usec= timeout%MSECONDS;
+
+	retval = select ( width, &rd, &wr, &ex, &tv );
+    }
+    else
+    {
+	retval = select ( width, &rd, &wr, &ex, 0 );
+    }
+
+    if( retval <= 0 ) return( retval );
+
+#ifdef DEBUG_POLL_AS_SELECT
+    LDAPDebug(LDAP_DEBUG_ANY, "For\n",0,0,0);
+#endif /* DEBUG_POLL_AS_SELECT */
+
+    for( b=0; b<nfds;b++){
+
+	if( filed[b].fd >= 0 ){
+	    a = filed[b].fd;
+
+	    if( FD_ISSET( a, &rd )) filed[b].revents |= POLLIN;
+	    if( FD_ISSET( a, &wr )) filed[b].revents |= POLLOUT;
+	    if( FD_ISSET( a, &ex )) filed[b].revents |= POLLPRI;
+
+#ifdef DEBUG_POLL_AS_SELECT
+	    if ((filed[b].events != 0) || (filed[b].revents != 0)) {
+	 	LDAPDebug(LDAP_DEBUG_ANY, "   file des=%d, events=0x%x, revents=0x%x\n", filed[b].fd, filed[b].events ,filed[b].revents);
+	    }
+#endif /* DEBUG_POLL_AS_SELECT */
+	}
+    }
+
+    for( a=0, retval=0 ; a<nfds; a++ ){
+	if( filed[a].revents ) retval++;
+    }
+
+#ifdef DEBUG_POLL_AS_SELECT
+    LDAPDebug(LDAP_DEBUG_ANY, "poll returns %d (converted poll)\n",retval,0,0);
+#endif /* DEBUG_POLL_AS_SELECT */
+
+    return( retval );
+}