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git-svn-id: https://svn.pengutronix.de/svn/microcom/trunk@1 b6a597e7-0b13-0410-876a-e2d53f4c184b

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diff --git a/mux.c b/mux.c
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+/***************************************************************************
+** File: mux.c
+** Description: the main program loop
+**
+** Copyright (C)1999 Anca and Lucian Jurubita <ljurubita@hotmail.com>.
+** All rights reserved.
+****************************************************************************
+** This program is free software; you can redistribute it and/or
+** modify it under the terms of the GNU General Public License
+** as published by the Free Software Foundation; either version 2
+** of the License, or (at your option) any later version.
+**
+** 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 at www.gnu.org
+****************************************************************************
+** Rev. 1.0 - Feb. 2000
+****************************************************************************/
+#include "microcom.h"
+
+#define SCRIPT_DELAY 1
+#define BUFSIZE 1024
+
+extern int dolog;
+extern FILE *flog;
+
+/* main program loop */
+void
+mux_loop(int pf)
+{
+	fd_set ready;		/* used for select */
+	int i = 0;		/* used in the multiplex loop */
+	int done = 0;
+	char buf[BUFSIZE];
+	struct timeval tv;
+
+	tv.tv_sec = SCRIPT_DELAY;
+	tv.tv_usec = 0;
+
+	do {			/* forever */
+		FD_ZERO(&ready);
+		FD_SET(STDIN_FILENO, &ready);
+		FD_SET(pf, &ready);
+
+		select(pf + 1, &ready, NULL, NULL, NULL);
+
+		if (FD_ISSET(pf, &ready)) {
+			/* pf has characters for us */
+			i = read(pf, buf, BUFSIZE);
+			if (i > 0) {
+				write(STDOUT_FILENO, buf, i);
+				if (dolog)
+					fwrite(buf, 1, i, flog);
+			} else
+				done = 1;
+		}
+		/* if */
+		if (FD_ISSET(STDIN_FILENO, &ready)) {
+			/* standard input has characters for us */
+			i = read(STDIN_FILENO, buf, BUFSIZE);
+			if (i > 0)
+				cook_buf(pf, buf, i);
+			else
+				done = 1;
+		}		/* if */
+	} while (!done);	/* do */
+}