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/*-
* Copyright (c) 1990, 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[] = "@(#)instr.c 8.1 (Berkeley) 5/31/93";
#endif /* not lint */
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/errno.h>
#include <sys/stat.h>
#include <curses.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "deck.h"
#include "cribbage.h"
#include "pathnames.h"
void
instructions()
{
extern int errno;
struct stat sb;
union wait pstat;
pid_t pid;
char *pager, *path;
if (stat(_PATH_INSTR, &sb)) {
(void)fprintf(stderr, "cribbage: %s: %s.\n", _PATH_INSTR,
strerror(errno));
exit(1);
}
switch (pid = vfork()) {
case -1:
(void)fprintf(stderr, "cribbage: %s.\n", strerror(errno));
exit(1);
case 0:
if (!(path = getenv("PAGER")))
path = _PATH_MORE;
if (pager = rindex(path, '/'))
++pager;
pager = path;
execlp(path, pager, _PATH_INSTR, (char *)NULL);
(void)fprintf(stderr, "cribbage: %s.\n", strerror(errno));
_exit(1);
default:
do {
pid = waitpid(pid, (int *)&pstat, 0);
} while (pid == -1 && errno == EINTR);
if (pid == -1 || pstat.w_status)
exit(1);
}
}
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