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/*
* 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);
}
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