1 files changed, 92 insertions, 0 deletions
diff --git a/sbin/comcontrol/comcontrol.c b/sbin/comcontrol/comcontrol.c
new file mode 100644
index 000000000000..40cf8d25c8a8
--- /dev/null
+++ b/sbin/comcontrol/comcontrol.c
@@ -0,0 +1,92 @@
+/*-
+ * Copyright (c) 1992 Christopher G. Demetriou
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote
+ *    products derived from this software without specific written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/* comcontrol.c */
+
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <fcntl.h>
+
+
+void usage(char *progname)
+{
+	fprintf(stderr, "usage: %s <filename> [dtrwait <n>]\n", progname);
+	exit(1);
+}
+
+int main(int argc, char *argv[])
+{
+	int	fd;
+	int	res;
+	int     dtrwait;
+
+	if ((argc < 2) || (argc > 5)) usage(argv[0]);
+
+	fd = open(argv[1], O_RDONLY|O_NONBLOCK, 0);
+	if (fd < 0) {
+		fprintf(stderr, "%s: couldn't open file %s\n", argv[0], argv[1]);
+		perror("open");
+		exit(1);
+	}
+
+	if (argc == 2) {
+		if (ioctl(fd, TIOCMGDTRWAIT, &dtrwait) < 0) {
+			perror("TIOCMGDTRWAIT");
+			exit(1);
+		}
+		printf("dtrwait %d\n", dtrwait);
+	} else {
+		char *prg = argv[0];
+
+		res = dtrwait = -1;
+		while (argv[2] != NULL) {
+			if (!strcmp(argv[2],"dtrwait")) {
+				if (dtrwait >= 0)
+					usage(prg);
+				if (argv[3] == NULL || !isdigit(argv[3][0]))
+					usage(prg);
+				dtrwait = atoi(argv[3]);
+				argv += 2;
+			} else {
+				usage(prg);
+			}
+		}
+		if (dtrwait >= 0) {
+			if (ioctl(fd, TIOCMSDTRWAIT, &dtrwait) < 0) {
+				perror("TIOCMSDTRWAIT");
+				exit(1);
+			}
+		}
+	}
+
+	close(fd);
+	exit(0);
+}