| File: | src/games/cribbage/instr.c |
| Warning: | line 59, column 8 This function call is prohibited after a successful vfork |
Press '?' to see keyboard shortcuts
Keyboard shortcuts:
| 1 | /* $OpenBSD: instr.c,v 1.14 2016/01/10 13:35:09 mestre Exp $ */ | |||
| 2 | /* $NetBSD: instr.c,v 1.5 1997/07/10 06:47:30 mikel Exp $ */ | |||
| 3 | ||||
| 4 | /*- | |||
| 5 | * Copyright (c) 1990, 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. Neither the name of the University nor the names of its contributors | |||
| 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 <sys/wait.h> | |||
| 34 | ||||
| 35 | #include <err.h> | |||
| 36 | #include <errno(*__errno()).h> | |||
| 37 | #include <fcntl.h> | |||
| 38 | #include <paths.h> | |||
| 39 | #include <stdlib.h> | |||
| 40 | #include <unistd.h> | |||
| 41 | ||||
| 42 | #include "pathnames.h" | |||
| 43 | ||||
| 44 | void | |||
| 45 | instructions(void) | |||
| 46 | { | |||
| 47 | int pstat; | |||
| 48 | int fd; | |||
| 49 | pid_t pid; | |||
| 50 | const char *pager; | |||
| 51 | ||||
| 52 | if ((fd = open(_PATH_INSTR"/usr/share/games/cribbage.instr", O_RDONLY0x0000)) == - 1) | |||
| ||||
| 53 | errx(1, "can't open %s", _PATH_INSTR"/usr/share/games/cribbage.instr"); | |||
| 54 | ||||
| 55 | switch (pid = vfork()) { | |||
| 56 | case -1: | |||
| 57 | err(1, "vfork"); | |||
| 58 | case 0: | |||
| 59 | if (!isatty(1)) | |||
| ||||
| 60 | pager = "/bin/cat"; | |||
| 61 | else { | |||
| 62 | if (!(pager = getenv("PAGER")) || (*pager == 0)) | |||
| 63 | pager = _PATH_MORE"/usr/bin/more"; | |||
| 64 | } | |||
| 65 | if (dup2(fd, 0) == -1) | |||
| 66 | err(1, "dup2"); | |||
| 67 | execl(_PATH_BSHELL"/bin/sh", "sh", "-c", pager, (char *)NULL((void *)0)); | |||
| 68 | err(1, "exec sh -c %s", pager); | |||
| 69 | default: | |||
| 70 | do { | |||
| 71 | pid = waitpid(pid, &pstat, 0); | |||
| 72 | } while (pid == -1 && errno(*__errno()) == EINTR4); | |||
| 73 | close(fd); | |||
| 74 | if (pid == -1 || WEXITSTATUS(pstat)(int)(((unsigned)(pstat) >> 8) & 0xff)) | |||
| 75 | exit(1); | |||
| 76 | break; | |||
| 77 | } | |||
| 78 | } |