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- /*
- * 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 */
-
- #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);
- }
-