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annotate rogue4/mach_dep.c @ 162:600873555ec0

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Don't swap signal handlers in md_shellescape(). md_shellescape() sets SIGINT and SIGQUIT to be ignored, storing the previous handlers, and restores them after the shell exits. But it mixed up the two handlers. Since the signals were usually handled by the same function, this fix doesn't have much effect, but anything that makes signal code less confusing is a good thing.
author John "Elwin" Edwards
date Mon, 08 Jun 2015 10:01:25 -0400
parents 5926ec314fd4
children 1b73a8641b37
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1 /*
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2 * Various installation dependent routines
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3 *
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4 * @(#)mach_dep.c 4.23 (Berkeley) 5/19/82
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5 *
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6 * Rogue: Exploring the Dungeons of Doom
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7 * Copyright (C) 1980, 1981, 1982 Michael Toy, Ken Arnold and Glenn Wichman
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8 * All rights reserved.
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9 *
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10 * See the file LICENSE.TXT for full copyright and licensing information.
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11 */
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12
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13 /*
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14 * The various tuneable defines are:
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15 *
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16 * SCOREFILE Where/if the score file should live.
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17 * MAXLOAD What (if any) the maximum load average should be
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18 * when people are playing. If defined, then
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19 * LOADAV Should rogue define it's own routine to
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20 * get the load average?
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21 * NAMELIST If so, where does the system namelist hide?
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22 * MAXUSERS What (if any) the maximum user count should be
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23 * when people are playing. If defined, then
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24 * UCOUNT Should rogue define it's own routine to
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25 * count users?
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26 * UTMP If so, where does the user list hide?
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27 * CHECKTIME How often/if rogue should check during the game
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28 * for high load average.
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29 */
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30
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31 #include <limits.h>
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32 #include <stdlib.h>
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33 #include <stdio.h>
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34 #include <curses.h>
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35 #include <time.h>
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36 #include <signal.h>
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37 #include <sys/stat.h>
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38 #include <fcntl.h>
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39 #include <string.h>
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40 #include "rogue.h"
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41
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42 int num_checks; /* times we've gone over in checkout() */
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43
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44 #ifdef SCOREFILE
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45 #ifdef LOCKFILE
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46 static char *lockfile = LOCKFILE;
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47 #endif
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48 #endif
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49
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50 /*
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51 * init_check:
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52 * Check out too see if it is proper to play the game now
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53 */
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54 init_check()
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55 {
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56 if (too_much())
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57 {
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58 printf("Sorry, %s, but the system is too loaded now.\n", whoami);
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59 printf("Try again later. Meanwhile, why not enjoy a%s %s?\n",
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60 vowelstr(fruit), fruit);
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61 if (author())
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62 printf("However, since you're a good guy, it's up to you\n");
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63 else
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64 exit(1);
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65 }
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66 }
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67
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68 /*
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69 * open_score:
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70 * Open up the score file for future use, and then
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71 * setuid(getuid()) in case we are running setuid.
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72 */
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73 open_score()
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74 {
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75 #ifdef SCOREFILE
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76 fd = open(SCOREFILE, O_RDWR | O_CREAT, 0666 );
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77 #else
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78 fd = -1;
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79 #endif
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80 if (!use_savedir)
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81 md_normaluser();
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82 return;
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83 }
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84
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85 void open_log(void)
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86 {
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87 #ifdef LOGFILE
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88 lfd = open(LOGFILE, O_WRONLY | O_APPEND | O_CREAT, 0666);
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89 #else
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90 lfd = -1;
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91 #endif
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92 return;
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93 }
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94
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95 /*
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96 * setup:
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97 * Get starting setup for all games
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98 */
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99 setup()
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100 {
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101 void auto_save(), quit(), endit(), tstp();
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102 #ifdef CHECKTIME
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103