1 files changed, 93 insertions, 0 deletions
diff --git a/usr.bin/tip/hunt.c b/usr.bin/tip/hunt.c
new file mode 100644
index 0000000..650ac26
--- /dev/null
+++ b/usr.bin/tip/hunt.c
@@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)hunt.c	8.1 (Berkeley) 6/6/93";
+#endif /* not lint */
+
+#include "tip.h"
+
+extern char *getremote();
+extern char *rindex();
+
+static	jmp_buf deadline;
+static	int deadfl;
+
+void
+dead()
+{
+	deadfl = 1;
+	longjmp(deadline, 1);
+}
+
+hunt(name)
+	char *name;
+{
+	register char *cp;
+	sig_t f;
+
+	f = signal(SIGALRM, dead);
+	while (cp = getremote(name)) {
+		deadfl = 0;
+		uucplock = rindex(cp, '/')+1;
+		if (uu_lock(uucplock) < 0)
+			continue;
+		/*
+		 * Straight through call units, such as the BIZCOMP,
+		 * VADIC and the DF, must indicate they're hardwired in
+		 *  order to get an open file descriptor placed in FD.
+		 * Otherwise, as for a DN-11, the open will have to
+		 *  be done in the "open" routine.
+		 */
+		if (!HW)
+			break;
+		if (setjmp(deadline) == 0) {
+			alarm(10);
+			FD = open(cp, O_RDWR);
+		}
+		alarm(0);
+		if (FD < 0) {
+			perror(cp);
+			deadfl = 1;
+		}
+		if (!deadfl) {
+			ioctl(FD, TIOCEXCL, 0);
+			ioctl(FD, TIOCHPCL, 0);
+			signal(SIGALRM, SIG_DFL);
+			return ((int)cp);
+		}
+		(void)uu_unlock(uucplock);
+	}
+	signal(SIGALRM, f);
+	return (deadfl ? -1 : (int)cp);
+}