1 | /* |
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2 | * daemon test suite. |
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3 | * |
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4 | * Written by Russ Allbery <rra@stanford.edu> |
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5 | * Copyright 2008, 2009 Board of Trustees, Leland Stanford Jr. University |
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6 | * |
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7 | * See LICENSE for licensing terms. |
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8 | */ |
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9 | |
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10 | #include <config.h> |
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11 | #include <portable/system.h> |
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12 | |
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13 | #include <errno.h> |
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14 | #include <fcntl.h> |
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15 | #ifdef HAVE_SYS_SELECT_H |
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16 | # include <sys/select.h> |
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17 | #endif |
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18 | #include <sys/stat.h> |
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19 | #include <sys/time.h> |
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20 | #include <sys/wait.h> |
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21 | |
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22 | #include <tests/tap/basic.h> |
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23 | #include <util/util.h> |
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24 | |
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25 | int test_daemon(int, int); |
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26 | |
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27 | |
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28 | /* |
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29 | * Create the sentinel file, used by the child to indicate when it's done. |
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30 | */ |
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31 | static void |
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32 | create_sentinel(void) |
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33 | { |
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34 | int fd; |
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35 | |
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36 | fd = open("daemon-sentinel", O_RDWR | O_CREAT, 0666); |
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37 | close(fd); |
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38 | } |
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39 | |
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40 | |
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41 | /* |
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42 | * Wait for a sentinel file to be created. Returns true if we saw it within |
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43 | * the expected length of time, and false otherwise. |
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44 | */ |
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45 | static int |
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46 | wait_sentinel(void) |
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47 | { |
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48 | int count = 20; |
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49 | int i; |
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50 | struct timeval tv; |
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51 | |
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52 | for (i = 0; i < count; i++) { |
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53 | if (access("daemon-sentinel", F_OK) == 0) { |
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54 | unlink("daemon-sentinel"); |
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55 | return 1; |
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56 | } |
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57 | tv.tv_sec = 0; |
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58 | tv.tv_usec = 100000; |
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59 | select(0, NULL, NULL, NULL, &tv); |
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60 | } |
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61 | if (access("daemon-sentinel", F_OK) == 0) { |
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62 | unlink("daemon-sentinel"); |
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63 | return 1; |
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64 | } |
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65 | return 0; |
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66 | } |
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67 | |
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68 | |
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69 | int |
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70 | main(void) |
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71 | { |
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72 | int fd, status; |
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73 | pid_t child; |
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74 | char start[BUFSIZ], dir[BUFSIZ]; |
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75 | |
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76 | plan(9); |
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77 | |
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78 | /* Get the current working directory. */ |
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79 | if (getcwd(start, sizeof(start)) == NULL) |
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80 | bail("cannot get current working directory"); |
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81 | |
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82 | /* First, some basic tests. */ |
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83 | child = fork(); |
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84 | if (child < 0) |
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85 | sysbail("cannot fork"); |
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86 | else if (child == 0) { |
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87 | is_int(0, daemon(1, 1), "daemon(1, 1)"); |
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88 | fd = open("/dev/tty", O_RDONLY); |
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89 | ok(fd < 0, "...no tty"); |
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90 | is_string(start, getcwd(dir, sizeof(dir)), "...in same directory"); |
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91 | create_sentinel(); |
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92 | exit(42); |
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93 | } else { |
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94 | if (waitpid(child, &status, 0) < 0) |
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95 | bail("cannot wait for child: %s", strerror(errno)); |
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96 | testnum += 3; |
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97 | ok(wait_sentinel(), "...child exited"); |
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98 | is_int(0, status, "...successfully"); |
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99 | } |
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100 | |
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101 | /* Test chdir. */ |
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102 | child = fork(); |
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103 | if (child < 0) |
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104 | sysbail("cannot fork"); |
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105 | else if (child == 0) { |
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106 | is_int(0, daemon(0, 1), "daemon(0, 1)"); |
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107 | is_string("/", getcwd(dir, sizeof(dir)), "...now in /"); |
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108 | if (chdir(start) != 0) |
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109 | sysbail("cannot chdir to %s", start); |
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110 | create_sentinel(); |
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111 | exit(0); |
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112 | } else { |
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113 | if (waitpid(child, &status, 0) < 0) |
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114 | sysbail("cannot wait for child"); |
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115 | testnum += 2; |
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116 | ok(wait_sentinel(), "...child exited"); |
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117 | } |
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118 | |
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119 | /* Test close. */ |
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120 | child = fork(); |
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121 | if (child < 0) |
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122 | sysbail("cannot fork"); |
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123 | else if (child == 0) { |
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124 | daemon(0, 0); |
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125 | if (chdir(start) != 0) |
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126 | sysbail("cannot chdir to %s", start); |
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127 | ok(0, "output from child that should be hidden"); |
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128 | create_sentinel(); |
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129 | exit(0); |
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130 | } else { |
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131 | if (waitpid(child, &status, 0) < 0) |
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132 | sysbail("cannot wait for child"); |
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133 | ok(wait_sentinel(), "daemon(0, 0)"); |
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134 | } |
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135 | |
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136 | return 0; |
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137 | } |
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