BSD 4_3_Net_2 release

[unix-history] / 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 cdae7e2..49a633d 100644 (file)
--- a/usr/src/usr.bin/tip/hunt.c
+++ b/usr/src/usr.bin/tip/hunt.c
@@ -1,55 +1,93 @@
-/*     hunt.c  4.5     81/11/29        */
-#include "tip.h"
+/*
+ * Copyright (c) 1983 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     5.6 (Berkeley) 6/1/90";
+#endif /* not lint */

 
 

-#define RD     04
+#include "tip.h"

 
 extern char *getremote();
 extern char *rindex();
 
 
 extern char *getremote();
 extern char *rindex();
 

-int deadfl;
+static jmp_buf deadline;
+static int deadfl;

 
 

+void

 dead()
 {
        deadfl = 1;
 dead()
 {
        deadfl = 1;

+       longjmp(deadline, 1);

 }
 
 hunt(name)
        char *name;
 {
        register char *cp;
 }
 
 hunt(name)
        char *name;
 {
        register char *cp;

+       sig_t f;

 
 

-       deadfl = 0;
-       signal(SIGALRM, dead);
+       f = signal(SIGALRM, dead);

        while (cp = getremote(name)) {
        while (cp = getremote(name)) {

-               if (access(cp, RD))
-                       continue;
+               deadfl = 0;

                uucplock = rindex(cp, '/')+1;
                uucplock = rindex(cp, '/')+1;

-               if (mlock(uucplock) < 0) {
-                       delock(uucplock);
+               if (uu_lock(uucplock) < 0)

                        continue;
                        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;
                 *  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);
                }
                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);
+       signal(SIGALRM, f);

        return (deadfl ? -1 : (int)cp);
 }
        return (deadfl ? -1 : (int)cp);
 }