1 | /* test23: chdir(), getcwd() Author: Jan-Mark Wams (jms@cs.vu.nl) */
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2 |
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3 | #include <sys/types.h>
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4 | #include <sys/stat.h>
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5 | #include <sys/dir.h>
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6 | #include <limits.h>
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7 | #include <errno.h>
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8 | #include <unistd.h>
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9 | #include <stdlib.h>
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10 | #include <string.h>
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11 | #include <fcntl.h>
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12 | #include <stdio.h>
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13 |
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14 | #define MAX_ERROR 4
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15 | #define ITERATIONS 3
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16 |
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17 | #define System(cmd) if (system(cmd) != 0) printf("``%s'' failed\n", cmd)
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18 | #define Chdir(dir) if (chdir(dir) != 0) printf("Can't goto %s\n", dir)
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19 |
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20 | int errct;
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21 | int subtest;
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22 | int superuser; /* True if we are root. */
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23 |
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24 | char cwd[PATH_MAX]; /* Space for path names. */
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25 | char cwd2[PATH_MAX];
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26 | char buf[PATH_MAX];
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27 | char MaxName[NAME_MAX + 1]; /* Name of maximum length */
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28 | char MaxPath[PATH_MAX]; /* Same for path */
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29 | char ToLongName[NAME_MAX + 2]; /* Name of maximum +1 length */
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30 | char ToLongPath[PATH_MAX + 1]; /* Same for path, both too long */
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31 |
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32 | _PROTOTYPE(void main, (int argc, char *argv[]));
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33 | _PROTOTYPE(void test23a, (void));
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34 | _PROTOTYPE(void test23b, (void));
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35 | _PROTOTYPE(void test23c, (void));
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36 | _PROTOTYPE(void makelongnames, (void)); /* Fill MaxName etc. */
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37 | _PROTOTYPE(char *last_index, (char *string, int ch));
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38 | _PROTOTYPE(char *my_getcwd, (char *buf, int size));
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39 | _PROTOTYPE(void e, (int number));
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40 | _PROTOTYPE(void quit, (void));
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41 |
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42 | void main(argc, argv)
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43 | int argc;
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44 | char *argv[];
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45 | {
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46 | int i, m = 0xFFFF;
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47 |
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48 | sync();
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49 | if (argc == 2) m = atoi(argv[1]);
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50 | printf("Test 23 ");
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51 | fflush(stdout);
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52 | System("rm -rf DIR_23; mkdir DIR_23");
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53 | Chdir("DIR_23");
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54 | makelongnames();
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55 | superuser = (geteuid() == 0);
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56 |
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57 | for (i = 0; i < ITERATIONS; i++) {
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58 | if (m & 0001) test23a(); /* Test normal operation */
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59 | if (m & 0002) test23b(); /* Test critical operation */
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60 | if (m & 0004) test23c(); /* Test error operation */
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61 | }
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62 |
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63 | quit();
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64 | }
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65 |
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66 | void test23a()
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67 | { /* Test normal operation. */
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68 | register int i;
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69 |
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70 | subtest = 1;
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71 |
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72 | System("rm -rf ../DIR_23/*");
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73 |
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74 | /* Let's do some fiddeling with path names. */
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75 | if (getcwd(cwd, PATH_MAX) != cwd) e(1);
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76 | if (chdir(cwd) != 0) e(2);
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77 | if (getcwd(buf, PATH_MAX) != buf) e(3);
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78 | if (strcmp(buf, cwd) != 0) e(4);
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79 | if (chdir(".") != 0) e(5);
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80 | if (getcwd(buf, PATH_MAX) != buf) e(6);
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81 | if (strcmp(buf, cwd) != 0) e(7);
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82 | if (chdir("./././.") != 0) e(8);
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83 | if (getcwd(buf, PATH_MAX) != buf) e(9);
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84 | if (strcmp(buf, cwd) != 0) e(10);
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85 |
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86 | /* Creat a working dir named "foo", remove any previous residues. */
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87 | System("rm -rf foo");
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88 | if (mkdir("foo", 0777) != 0) e(11);
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89 |
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90 | /* Do some more fiddeling with path names. */
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91 | if (chdir("foo/.././foo/..") != 0) e(12); /* change to cwd */
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92 | if (getcwd(buf, PATH_MAX) != buf) e(13);
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93 | if (strcmp(buf, cwd) != 0) e(13);
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94 | if (chdir("foo") != 0) e(14); /* change to foo */
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95 | if (chdir("..") != 0) e(15); /* and back again */
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96 | if (getcwd(buf, PATH_MAX) != buf) e(16);
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97 | if (strcmp(buf, cwd) != 0) e(17);
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98 |
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99 | /* Make 30 sub dirs, eg. ./bar/bar/bar/bar/bar...... */
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100 | System("rm -rf bar"); /* get ridd of bar */
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101 | for (i = 0; i < 30; i++) {
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102 | if (mkdir("bar", 0777) != 0) e(18);
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103 | if (chdir("bar") != 0) e(19); /* change to bar */
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104 | }
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105 | for (i = 0; i < 30; i++) {
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106 | if (chdir("..") != 0) e(20); /* and back again */
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107 | if (rmdir("bar") != 0) e(21);
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108 | }
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109 |
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110 | /* Make sure we are back where we started. */
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111 | if (getcwd(buf, PATH_MAX) != buf) e(22);
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112 | if (strcmp(buf, cwd) != 0) e(23);
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113 | System("rm -rf bar"); /* just incase */
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114 |
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115 | /* Do some normal checks on `Chdir()' and `getcwd()' */
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116 | if (chdir("/") != 0) e(24);
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117 | if (getcwd(buf, PATH_MAX) != buf) e(25);
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118 | if (strcmp(buf, "/") != 0) e(26);
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119 | if (chdir("..") != 0) e(27); /* go to parent of / */
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120 | if (getcwd(buf, PATH_MAX) != buf) e(28);
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121 | if (strcmp(buf, "/") != 0) e(29);
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122 | if (chdir(cwd) != 0) e(30);
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123 | if (getcwd(buf, PATH_MAX) != buf) e(31);
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124 | if (strcmp(buf, cwd) != 0) e(32);
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125 | if (chdir("/etc") != 0) e(33); /* /etc might be on RAM */
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126 | if (getcwd(buf, PATH_MAX) != buf) e(34); /* might make a difference */
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127 | if (strcmp(buf, "/etc") != 0) e(35);
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128 | if (chdir(cwd) != 0) e(36);
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129 | if (getcwd(buf, PATH_MAX) != buf) e(37);
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130 | if (strcmp(buf, cwd) != 0) e(38);
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131 | if (chdir(".//.//") != 0) e(39); /* .//.// == current dir */
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132 | if (getcwd(buf, PATH_MAX) != buf) e(40);
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133 | if (strcmp(buf, cwd) != 0) e(41); /* we might be at '/' */
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134 | #ifdef _MINIX
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135 | /* XXX - my_getcwd() is old rubbish. It reads the directory directly instead
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136 | * of through the directory library. It uses a fixed size buffer instead of
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137 | * a size related to PATH_MAX, NAME_MAX or the size required.
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138 | */
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139 | if (my_getcwd(buf, PATH_MAX) != buf) e(42); /* get cwd my way */
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140 | if (strcmp(cwd, buf) != 0) e(43);
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141 | #endif
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142 | System("rm -rf foo");
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143 | }
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144 |
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145 | void test23b()
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146 | { /* Test critical values. */
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147 | subtest = 2;
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148 |
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149 | System("rm -rf ../DIR_23/*");
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150 |
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151 | /* Fiddle with the size (2nt) parameter of `getcwd ()'. */
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152 | if (getcwd(cwd, PATH_MAX) != cwd) e(1); /* get cwd */
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153 | if (getcwd(buf, strlen(cwd)) != (char *) 0) e(2); /* size 1 to small */
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154 | if (errno != ERANGE) e(3);
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155 | if (getcwd(buf, PATH_MAX) != buf) e(4);
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156 | if (strcmp(buf, cwd) != 0) e(5);
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157 | Chdir(cwd); /* getcwd might cd / */
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158 | if (getcwd(buf, strlen(cwd) + 1) != buf) e(6); /* size just ok */
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159 | if (getcwd(buf, PATH_MAX) != buf) e(7);
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160 | if (strcmp(buf, cwd) != 0) e(8);
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161 |
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162 | /* Let's see how "MaxName" and "ToLongName" are handled. */
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163 | if (mkdir(MaxName, 0777) != 0) e(9);
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164 | if (chdir(MaxName) != 0) e(10);
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165 | if (chdir("..") != 0) e(11);
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166 | if (rmdir(MaxName) != 0) e(12);
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167 | if (getcwd(buf, PATH_MAX) != buf) e(13);
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168 | if (strcmp(buf, cwd) != 0) e(14);
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169 | if (chdir(MaxPath) != 0) e(15);
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170 | if (getcwd(buf, PATH_MAX) != buf) e(16);
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171 | if (strcmp(buf, cwd) != 0) e(17);
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172 |
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173 | if (chdir(ToLongName) != -1) e(18);
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174 | #ifdef _POSIX_NO_TRUNC
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175 | # if _POSIX_NO_TRUNC - 0 != -1
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176 | if (errno != ENAMETOOLONG) e(20);
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177 | # else
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178 | if (errno != ENOENT) e(20);
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179 | # endif
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180 | #else
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181 | # include "error, this case requires dynamic checks and is not handled"
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182 | #endif
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183 |
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184 | if (getcwd(buf, PATH_MAX) != buf) e(21);
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185 | if (strcmp(buf, cwd) != 0) e(22);
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186 | if (chdir(ToLongPath) != -1) e(23);
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187 | if (errno != ENAMETOOLONG) e(24);
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188 | if (getcwd(buf, PATH_MAX) != buf) e(25);
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189 | if (strcmp(buf, cwd) != 0) e(26);
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190 | }
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191 |
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192 | void test23c()
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193 | { /* Check reaction to errors */
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194 | subtest = 3;
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195 |
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196 | System("rm -rf ../DIR_23/*");
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197 |
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198 | if (getcwd(cwd, PATH_MAX) != cwd) e(1); /* get cwd */
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199 |
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200 | /* Creat a working dir named "foo", remove any previous residues. */
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201 | System("rm -rf foo; mkdir foo");
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202 |
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203 | /* Check some obviouse errors. */
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204 | if (chdir("") != -1) e(2);
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205 | if (errno != ENOENT) e(3);
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206 | if (getcwd(buf, PATH_MAX) != buf) e(4);
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207 | if (strcmp(buf, cwd) != 0) e(5);
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208 | if (getcwd(buf, 0) != (char *) 0) e(6);
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209 | if (errno != EINVAL) e(7);
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210 | if (getcwd(buf, PATH_MAX) != buf) e(8);
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211 | if (strcmp(buf, cwd) != 0) e(9);
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212 | if (getcwd(buf, 0) != (char *) 0) e(10);
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213 | if (errno != EINVAL) e(11);
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214 | if (getcwd(buf, PATH_MAX) != buf) e(12);
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215 | if (strcmp(buf, cwd) != 0) e(13);
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216 | if (chdir(cwd) != 0) e(14); /* getcwd might be buggy. */
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217 |
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218 | /* Change the mode of foo, and check the effect. */
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219 | if (chdir("foo") != 0) e(15); /* change to foo */
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220 | if (mkdir("bar", 0777) != 0) e(16); /* make a new dir bar */
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221 | if (getcwd(cwd2, PATH_MAX) != cwd2) e(17); /* get the new cwd */
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222 | if (getcwd(buf, 3) != (char *) 0) e(18); /* size is too small */
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223 | if (errno != ERANGE) e(19);
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224 | if (getcwd(buf, PATH_MAX) != buf) e(20);
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225 | if (strcmp(buf, cwd2) != 0) e(21);
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226 | Chdir(cwd2); /* getcwd() might cd / */
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227 | System("chmod 377 ."); /* make foo unreadable */
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228 | if (getcwd(buf, PATH_MAX) != buf) e(22); /* dir not readable */
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229 | if (getcwd(buf, PATH_MAX) != buf) e(23);
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230 | if (strcmp(buf, cwd2) != 0) e(24);
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231 | if (chdir("bar") != 0) e(25); /* at .../foo/bar */
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232 | if (!superuser) {
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233 | if (getcwd(buf, PATH_MAX) != (char *) 0) e(26);
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234 | if (errno != EACCES) e(27);
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235 | }
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236 | if (superuser) {
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237 | if (getcwd(buf, PATH_MAX) != buf) e(28);
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238 | }
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239 | if (chdir(cwd2) != 0) e(29);
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240 | if (getcwd(buf, PATH_MAX) != buf) e(30);
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241 | if (strcmp(buf, cwd2) != 0) e(31);
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242 | System("chmod 677 ."); /* make foo inaccessable */
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243 | if (!superuser) {
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244 | if (getcwd(buf, PATH_MAX) != (char *) 0) e(32); /* try to get cwd */
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245 | if (errno != EACCES) e(33); /* but no access */
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246 | if (chdir("..") != -1) e(34); /* try to get back */
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247 | if (errno != EACCES) e(35); /* again no access */
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248 | if (chdir(cwd) != 0) e(36); /* get back to cwd */
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249 | /* `Chdir()' might do path optimizing, it shouldn't. */
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250 | if (chdir("foo/..") != -1) e(37); /* no op */
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251 | if (chdir("foo") != -1) e(38); /* try to cd to foo */
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252 | if (errno != EACCES) e(39); /* no have access */
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253 | if (getcwd(buf, PATH_MAX) != buf) e(40);
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254 | if (strcmp(buf, cwd) != 0) e(41);
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255 | }
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256 | if (superuser) {
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257 | if (getcwd(buf, PATH_MAX) != buf) e(42);
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258 | if (strcmp(buf, cwd2) != 0) e(43);
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259 | if (chdir("..") != 0) e(44); /* get back to cwd */
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260 | if (chdir("foo") != 0) e(45); /* get back to foo */
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261 | if (chdir(cwd) != 0) e(46); /* get back to cwd */
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262 | }
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263 | if (getcwd(buf, PATH_MAX) != buf) e(47); /* check we are */
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264 | if (strcmp(buf, cwd) != 0) e(48); /* back at cwd. */
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265 | Chdir(cwd); /* just in case... */
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266 |
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267 | if (chdir("/etc/passwd") != -1) e(49); /* try to change to a file */
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268 | if (errno != ENOTDIR) e(50);
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269 | if (getcwd(buf, PATH_MAX) != buf) e(51);
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270 | if (strcmp(buf, cwd) != 0) e(52);
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271 | if (chdir("/notexist") != -1) e(53);
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272 | if (errno != ENOENT) e(54);
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273 | if (getcwd(buf, PATH_MAX) != buf) e(55);
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274 | if (strcmp(buf, cwd) != 0) e(56);
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275 | System("chmod 777 foo");
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276 | if (chdir("foo") != 0) e(57);
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277 |
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278 | /* XXX - this comment was botched by 'pretty'. */
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279 | /* * Since `foo' is the cwd, it should not be removeable but * if it
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280 | * were, this code would be found here; *
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281 | *
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282 | * System ("cd .. ; rm -rf foo"); remove foo * if (chdir (".")
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283 | * != -1) e(); try go to. * if (errno != ENOENT) e();
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284 | * hould not be an entry * if (chdir ("..") != -1) e(); try
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285 | * to get back * if (errno != ENOENT) e(); should not be
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286 | * an entry * if (getcwd (buf, PATH_MAX) != (char *)0) e(); don't
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287 | * know where we are *
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288 | *
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289 | * What should errno be now ? The cwd might be gone if te superuser *
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290 | * removed the cwd. (Might even have linked it first.) But this *
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291 | * testing should be done by the test program for `rmdir()'. */
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292 | if (chdir(cwd) != 0) e(58);
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293 | }
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294 |
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295 | void makelongnames()
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296 | {
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297 | register int i;
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298 |
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299 | memset(MaxName, 'a', NAME_MAX);
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300 | MaxName[NAME_MAX] = '\0';
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301 | for (i = 0; i < PATH_MAX - 1; i++) { /* idem path */
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302 | MaxPath[i++] = '.';
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303 | MaxPath[i] = '/';
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304 | }
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305 | MaxPath[PATH_MAX - 1] = '\0';
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306 |
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307 | strcpy(ToLongName, MaxName); /* copy them Max to ToLong */
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308 | strcpy(ToLongPath, MaxPath);
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309 |
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310 | ToLongName[NAME_MAX] = 'a';
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311 | ToLongName[NAME_MAX + 1] = '\0'; /* extend ToLongName by one too many */
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312 | ToLongPath[PATH_MAX - 1] = '/';
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313 | ToLongPath[PATH_MAX] = '\0'; /* inc ToLongPath by one */
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314 | }
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315 |
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316 | /* The following code, is take from pwd written by Adri Koppes */
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317 |
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318 | /* My_getcwd() helper. */
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319 | char *last_index(string, ch)
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320 | char *string;
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321 | char ch;
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322 | {
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323 | register char *retval = '\0';
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324 |
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325 | while (*string != '\0') {
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326 | if (*string == ch) retval = string;
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327 | string++;
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328 | }
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329 | return(retval);
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330 | }
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331 |
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332 | char *my_getcwd(buf, size)
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333 | char *buf;
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334 | int size;
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335 | { /* should be like getcwd() */
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336 | int sd;
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337 | register int fd;
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338 | register char *n;
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339 | char name[128];
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340 | struct stat s, st, sk;
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341 | struct direct d;
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342 |
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343 | if (size <= 0) return(char *) 0;
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344 |
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345 | *buf = '\0';
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346 | *name = '\0';
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347 | stat(".", &s);
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348 | do {
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349 | if ((fd = open("..", O_RDONLY)) < 0) return(char *) 0;
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350 | st.st_dev = s.st_dev;
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351 | st.st_ino = s.st_ino;
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352 | stat("..", &s);
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353 | Chdir("..");
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354 | sd = sizeof(struct direct);
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355 | if (s.st_dev == st.st_dev) {
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356 | do {
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357 | if (read(fd, (char *) &d, sd) < sd) return(char *) 0;
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358 | } while (d.d_ino != st.st_ino);
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359 | } else {
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360 | do {
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361 | if (read(fd, (char *) &d, sd) < sd) return(char *) 0;
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362 | stat(d.d_name, &sk);
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363 | } while ((sk.st_dev != st.st_dev) ||
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364 | (sk.st_ino != st.st_ino));
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365 | }
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366 | close(fd);
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367 | if (strcmp(".", d.d_name) != 0) {
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368 | strcat(name, "/");
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369 | strcat(name, d.d_name);
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370 | }
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371 | } while ((s.st_ino != st.st_ino) || (s.st_dev != st.st_dev));
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372 | if (*name == '\0')
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373 | strncat(buf, "/", size);
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374 | else
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375 | while ((n = last_index(name, '/')) != NULL) {
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376 | n[NAME_MAX] = '\0';
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377 | strncat(buf, n, size - strlen(buf));
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378 | *n = '\0';
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379 | }
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380 | strncat(buf, name, size - strlen(buf));
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381 | buf[size - 1] = '\0';
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382 | Chdir(buf); /* get back there */
|
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383 | return buf;
|
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384 | }
|
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385 |
|
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386 | void e(n)
|
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387 | int n;
|
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388 | {
|
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389 | int err_num = errno; /* Save in case printf clobbers it. */
|
---|
390 |
|
---|
391 | printf("Subtest %d, error %d errno=%d: ", subtest, n, errno);
|
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392 | errno = err_num;
|
---|
393 | perror("");
|
---|
394 | if (errct++ > MAX_ERROR) {
|
---|
395 | printf("Too many errors; test aborted\n");
|
---|
396 | chdir("..");
|
---|
397 | system("rm -rf DIR*");
|
---|
398 | exit(1);
|
---|
399 | }
|
---|
400 | errno = 0;
|
---|
401 | }
|
---|
402 |
|
---|
403 | void quit()
|
---|
404 | {
|
---|
405 | Chdir("..");
|
---|
406 | System("rm -rf DIR_23");
|
---|
407 |
|
---|
408 | if (errct == 0) {
|
---|
409 | printf("ok\n");
|
---|
410 | exit(0);
|
---|
411 | } else {
|
---|
412 | printf("%d errors\n", errct);
|
---|
413 | exit(1);
|
---|
414 | }
|
---|
415 | }
|
---|