Annotation of src/usr.bin/tip/hunt.c, Revision 1.15
1.15 ! nicm 1: /* $OpenBSD: hunt.c,v 1.14 2009/10/27 23:59:44 deraadt Exp $ */
1.5 millert 2: /* $NetBSD: hunt.c,v 1.6 1997/04/20 00:02:10 mellon Exp $ */
1.1 deraadt 3:
4: /*
5: * Copyright (c) 1983, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
1.10 millert 16: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
32:
33: #include "tip.h"
34:
35: static jmp_buf deadline;
36: static int deadfl;
37:
1.12 moritz 38: static void dead(int);
39:
1.13 deraadt 40: /*ARGSUSED*/
1.12 moritz 41: static void
1.11 deraadt 42: dead(int signo)
1.1 deraadt 43: {
44: deadfl = 1;
45: longjmp(deadline, 1);
46: }
47:
48: long
1.11 deraadt 49: hunt(char *name)
1.1 deraadt 50: {
1.8 millert 51: char *cp;
1.1 deraadt 52: sig_t f;
53:
54: f = signal(SIGALRM, dead);
1.6 deraadt 55: while ((cp = getremote(name))) {
1.1 deraadt 56: deadfl = 0;
1.7 deraadt 57: uucplock = strrchr(cp, '/');
58: if (uucplock == NULL)
59: uucplock = cp;
60: else
61: uucplock++;
1.1 deraadt 62: if (uu_lock(uucplock) < 0)
63: continue;
1.15 ! nicm 64:
1.1 deraadt 65: if (setjmp(deadline) == 0) {
66: alarm(10);
1.5 millert 67: FD = open(cp, (O_RDWR |
1.11 deraadt 68: (boolean(value(DC)) ? O_NONBLOCK : 0)));
1.1 deraadt 69: }
70: alarm(0);
71: if (FD < 0) {
72: perror(cp);
73: deadfl = 1;
74: }
75: if (!deadfl) {
1.2 deraadt 76: struct termios cntrl;
77:
78: tcgetattr(FD, &cntrl);
1.5 millert 79: if (!boolean(value(DC)))
80: cntrl.c_cflag |= HUPCL;
1.2 deraadt 81: tcsetattr(FD, TCSAFLUSH, &cntrl);
1.1 deraadt 82: ioctl(FD, TIOCEXCL, 0);
83: signal(SIGALRM, SIG_DFL);
84: return ((long)cp);
85: }
1.15 ! nicm 86:
1.1 deraadt 87: (void)uu_unlock(uucplock);
88: }
89: signal(SIGALRM, f);
90: return (deadfl ? -1 : (long)cp);
91: }