103 lines
2.9 KiB
C
103 lines
2.9 KiB
C
/* $NetBSD: hunt.c,v 1.10 2003/08/07 11:16:17 agc Exp $ */
|
|
|
|
/*
|
|
* 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. 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#ifndef lint
|
|
#if 0
|
|
static char sccsid[] = "@(#)hunt.c 8.1 (Berkeley) 6/6/93";
|
|
#endif
|
|
__RCSID("$NetBSD: hunt.c,v 1.10 2003/08/07 11:16:17 agc Exp $");
|
|
#endif /* not lint */
|
|
|
|
#include "tip.h"
|
|
|
|
static jmp_buf deadline;
|
|
static int deadfl;
|
|
|
|
void dead __P((int));
|
|
|
|
void
|
|
dead(dummy)
|
|
int dummy;
|
|
{
|
|
|
|
deadfl = 1;
|
|
longjmp(deadline, 1);
|
|
}
|
|
|
|
int
|
|
hunt(name)
|
|
char *name;
|
|
{
|
|
char *cp;
|
|
sig_t f;
|
|
|
|
f = signal(SIGALRM, dead);
|
|
while ((cp = getremote(name)) != NULL) {
|
|
deadfl = 0;
|
|
uucplock = strrchr(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 | (DC ? O_NONBLOCK : 0)));
|
|
}
|
|
alarm(0);
|
|
if (FD < 0) {
|
|
perror(cp);
|
|
deadfl = 1;
|
|
}
|
|
if (!deadfl) {
|
|
struct termios cntrl;
|
|
|
|
tcgetattr(FD, &cntrl);
|
|
if (!DC)
|
|
cntrl.c_cflag |= HUPCL;
|
|
tcsetattr(FD, TCSAFLUSH, &cntrl);
|
|
ioctl(FD, TIOCEXCL, 0);
|
|
signal(SIGALRM, SIG_DFL);
|
|
return (cp != NULL);
|
|
}
|
|
(void)uu_unlock(uucplock);
|
|
}
|
|
signal(SIGALRM, f);
|
|
return (deadfl ? -1 : cp != NULL);
|
|
}
|