1 files changed, 99 insertions, 0 deletions
diff --git a/src/select.c b/src/select.c
new file mode 100644
index 0000000..7d7bff9
--- /dev/null
+++ b/src/select.c
@@ -0,0 +1,99 @@
+/* ulogd, Version $LastChangedRevision: 476 $
+ *
+ * $Id: ulogd.c 476 2004-07-23 03:19:35Z laforge $
+ *
+ * userspace logging daemon for the iptables ULOG target
+ * of the linux 2.4 netfilter subsystem.
+ *
+ * (C) 2000-2005 by Harald Welte <laforge@gnumonks.org>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 
+ *  as published by the Free Software Foundation
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <fcntl.h>
+#include <ulogd/ulogd.h>
+#include <ulogd/linuxlist.h>
+
+static int maxfd = 0;
+static LIST_HEAD(ulogd_fds);
+
+int ulogd_register_fd(struct ulogd_fd *fd)
+{
+	int flags;
+
+	/* make FD nonblocking */
+	flags = fcntl(fd->fd, F_GETFL);
+	if (flags < 0)
+		return -1;
+	flags |= O_NONBLOCK;
+	flags = fcntl(fd->fd, F_SETFL, flags);
+	if (flags < 0)
+		return -1;
+
+	/* Register FD */
+	if (fd->fd > maxfd)
+		maxfd = fd->fd;
+	list_add_tail(&fd->list, &ulogd_fds);
+
+	return 0;
+}
+
+void ulogd_unregister_fd(struct ulogd_fd *fd)
+{
+	list_del(&fd->list);
+}
+
+int ulogd_select_main()
+{
+	struct ulogd_fd *ufd;
+	fd_set readset, writeset, exceptset;
+	int i;
+
+	FD_ZERO(&readset);
+	FD_ZERO(&writeset);
+	FD_ZERO(&exceptset);
+
+	/* prepare read and write fdsets */
+	list_for_each_entry(ufd, &ulogd_fds, list) {
+		if (ufd->when & ULOGD_FD_READ)
+			FD_SET(ufd->fd, &readset);
+
+		if (ufd->when & ULOGD_FD_WRITE)
+			FD_SET(ufd->fd, &writeset);
+
+		if (ufd->when & ULOGD_FD_EXCEPT)
+			FD_SET(ufd->fd, &exceptset);
+	}
+
+	i = select(maxfd, &readset, &writeset, NULL, NULL);
+	if (i > 0) {
+		/* call registered callback functions */
+		list_for_each_entry(ufd, &ulogd_fds, list) {
+			int flags = 0;
+
+			if (FD_ISSET(ufd->fd, &readset))
+				flags |= ULOGD_FD_READ;
+
+			if (FD_ISSET(ufd->fd, &writeset))
+				flags |= ULOGD_FD_WRITE;
+
+			if (FD_ISSET(ufd->fd, &exceptset))
+				flags |= ULOGD_FD_EXCEPT;
+
+			if (flags)
+				ufd->cb(ufd->fd, flags, ufd->data);
+		}
+	}
+	return i;
+}