2 * Copyright (c) 1990, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * @(#)instr.c 8.1 (Berkeley) 5/31/93
30 * $FreeBSD: src/games/cribbage/instr.c,v 1.5 1999/12/12 03:04:15 billf Exp $
31 * $DragonFly: src/games/cribbage/instr.c,v 1.4 2006/09/09 02:21:49 pavalos Exp $
46 #include "pathnames.h"
54 const char *pager, *path;
56 if (stat(_PATH_INSTR, &sb)) {
57 fprintf(stderr, "cribbage: %s: %s.\n", _PATH_INSTR,
61 switch (pid = vfork()) {
63 fprintf(stderr, "cribbage: %s.\n", strerror(errno));
66 if (!(path = getenv("PAGER")))
68 if ((pager = rindex(path, '/')) != NULL)
71 execlp(path, pager, _PATH_INSTR, NULL);
72 fprintf(stderr, "cribbage: %s.\n", strerror(errno));
76 pid = waitpid(pid, (int *)&pstat, 0);
77 } while (pid == -1 && errno == EINTR);
78 if (pid == -1 || pstat.w_status)