Annotation of src/usr.bin/tip/hunt.c, Revision 1.8
1.8 ! millert 1: /* $OpenBSD: hunt.c,v 1.7 2001/09/17 22:21:09 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.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #ifndef lint
38: #if 0
39: static char sccsid[] = "@(#)hunt.c 8.1 (Berkeley) 6/6/93";
40: #endif
1.8 ! millert 41: static char rcsid[] = "$OpenBSD: hunt.c,v 1.7 2001/09/17 22:21:09 deraadt Exp $";
1.1 deraadt 42: #endif /* not lint */
43:
44: #include "tip.h"
45:
46: extern char *getremote();
47:
48: static jmp_buf deadline;
49: static int deadfl;
50:
51: void
52: dead()
53: {
54: deadfl = 1;
55: longjmp(deadline, 1);
56: }
57:
58: long
59: hunt(name)
60: char *name;
61: {
1.8 ! millert 62: char *cp;
1.1 deraadt 63: sig_t f;
64:
65: f = signal(SIGALRM, dead);
1.6 deraadt 66: while ((cp = getremote(name))) {
1.1 deraadt 67: deadfl = 0;
1.7 deraadt 68: uucplock = strrchr(cp, '/');
69: if (uucplock == NULL)
70: uucplock = cp;
71: else
72: uucplock++;
73:
1.1 deraadt 74: if (uu_lock(uucplock) < 0)
75: continue;
76: /*
77: * Straight through call units, such as the BIZCOMP,
78: * VADIC and the DF, must indicate they're hardwired in
79: * order to get an open file descriptor placed in FD.
80: * Otherwise, as for a DN-11, the open will have to
81: * be done in the "open" routine.
82: */
83: if (!HW)
84: break;
85: if (setjmp(deadline) == 0) {
86: alarm(10);
1.5 millert 87: FD = open(cp, (O_RDWR |
88: (boolean(value(DC)) ? O_NONBLOCK : 0)));
1.1 deraadt 89: }
90: alarm(0);
91: if (FD < 0) {
92: perror(cp);
93: deadfl = 1;
94: }
95: if (!deadfl) {
1.2 deraadt 96: struct termios cntrl;
97:
98: tcgetattr(FD, &cntrl);
1.5 millert 99: if (!boolean(value(DC)))
100: cntrl.c_cflag |= HUPCL;
1.2 deraadt 101: tcsetattr(FD, TCSAFLUSH, &cntrl);
1.1 deraadt 102: ioctl(FD, TIOCEXCL, 0);
103: signal(SIGALRM, SIG_DFL);
104: return ((long)cp);
105: }
106: (void)uu_unlock(uucplock);
107: }
108: signal(SIGALRM, f);
109: return (deadfl ? -1 : (long)cp);
110: }