X-Git-Url: https://git.subgeniuskitty.com/unix-history/.git/blobdiff_plain/d8feebc2af6d893304b40de06ea2e9820044f2f9..d0719240aed7a84599ac73c71f78718b28341448:/usr/src/usr.bin/tip/hunt.c

diff --git a/usr/src/usr.bin/tip/hunt.c b/usr/src/usr.bin/tip/hunt.c
index 4030f7840f..d4c3ce6327 100644
--- a/usr/src/usr.bin/tip/hunt.c
+++ b/usr/src/usr.bin/tip/hunt.c
@@ -1,55 +1,67 @@
-/*	hunt.c	4.4	81/11/20	*/
-#include "tip.h"
+/*
+ * Copyright (c) 1983 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * %sccs.include.redist.c%
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)hunt.c	5.6 (Berkeley) %G%";
+#endif /* not lint */
 
-#define RD	04
+#include "tip.h"
 
 extern char *getremote();
 extern char *rindex();
 
-int deadfl;
+static	jmp_buf deadline;
+static	int deadfl;
 
+void
 dead()
 {
 	deadfl = 1;
+	longjmp(deadline, 1);
 }
 
 hunt(name)
 	char *name;
 {
 	register char *cp;
+	sig_t f;
 
-	deadfl = 0;
-	signal(SIGALRM, dead);
-	while(cp = getremote(name)){
-		if (access(cp, RD))
-			continue;
+	f = signal(SIGALRM, dead);
+	while (cp = getremote(name)) {
+		deadfl = 0;
 		uucplock = rindex(cp, '/')+1;
-		if (mlock(uucplock) < 0) {
-			delock(uucplock);
+		if (uu_lock(uucplock) < 0)
 			continue;
-		}
 		/*
-		 * Straight through call units, such as the BIZCOMP
-		 *  and the DF, must indicate they're hardwired in
+		 * 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;
-		alarm(10);
-		if((FD = open(cp, 2)) >= 0){
-			alarm(0);
-			if(!deadfl) {
-				ioctl(FD, TIOCEXCL, 0);
-				signal(SIGALRM, SIG_DFL);
-				return((int)cp);
-			}
+		if (setjmp(deadline) == 0) {
+			alarm(10);
+			FD = open(cp, O_RDWR);
 		}
 		alarm(0);
-		signal(SIGALRM, dead);
-		delock(uucplock);
+		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, SIG_DFL);
-	return(deadfl ? -1 : (int)cp);
+	signal(SIGALRM, f);
+	return (deadfl ? -1 : (int)cp);
 }