1 /* 2 * Copyright (c) 2004, Bull S.A.. All rights reserved. 3 * Created by: Sebastien Decugis 4 5 * This program is free software; you can redistribute it and/or modify it 6 * under the terms of version 2 of the GNU General Public License as 7 * published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it would be useful, but 10 * WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 12 * 13 * You should have received a copy of the GNU General Public License along 14 * with this program; if not, write the Free Software Foundation, Inc., 15 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 16 17 * This sample test aims to check the following assertion: 18 * 19 * The opened directory streams are copied to the child process. 20 * Positionning information may be shared between both processes. 21 22 * The steps are: 23 * -> Open the current directory, 24 * -> Count the directory entries, then rewind. 25 * -> create a child 26 * -> The child counts the directory entries. 27 28 * The test fails if the directory is read in the parent and not in the child. 29 30 */ 31 32 /* We are testing conformance to IEEE Std 1003.1, 2003 Edition */ 33 #define _POSIX_C_SOURCE 200112L 34 35 #include <pthread.h> 36 #include <stdarg.h> 37 #include <stdio.h> 38 #include <stdlib.h> 39 #include <string.h> 40 #include <unistd.h> 41 42 #include <sys/wait.h> 43 #include <errno.h> 44 45 #include <dirent.h> 46 47 #include "../testfrmw/testfrmw.h" 48 #include "../testfrmw/testfrmw.c" 49 50 #ifndef VERBOSE 51 #define VERBOSE 1 52 #endif 53 54 static int count(DIR * thedir) 55 { 56 int counter = 0; 57 58 struct dirent *dp; 59 60 rewinddir(thedir); 61 62 /* Count the directory entries */ 63 64 do { 65 dp = readdir(thedir); 66 67 if (dp != NULL) 68 counter++; 69 } 70 while (dp != NULL); 71 72 return counter; 73 } 74 75 int main(void) 76 { 77 int ret, status; 78 pid_t child, ctl; 79 80 int counted; 81 82 /* the '.' directory pointers */ 83 DIR *dotdir; 84 85 output_init(); 86 87 /* Open the directory */ 88 dotdir = opendir("."); 89 90 if (dotdir == NULL) { 91 UNRESOLVED(errno, "opendir failed"); 92 } 93 94 /* Count entries */ 95 counted = count(dotdir); 96 97 #if VERBOSE > 0 98 99 output("Found %d entries in current dir\n", counted); 100 101 #endif 102 103 /* Create the child */ 104 child = fork(); 105 106 if (child == -1) { 107 UNRESOLVED(errno, "Failed to fork"); 108 } 109 110 /* child */ 111 if (child == 0) { 112 /* Count in child process */ 113 counted = count(dotdir); 114 115 #if VERBOSE > 0 116 117 output("Found %d entries in current dir from child\n", counted); 118 #endif 119 120 ret = closedir(dotdir); 121 122 if (ret != 0) { 123 UNRESOLVED(errno, "Failed to close dir in child"); 124 } 125 126 /* We're done */ 127 exit(PTS_PASS); 128 } 129 130 /* Parent joins the child */ 131 ctl = waitpid(child, &status, 0); 132 133 if (ctl != child) { 134 UNRESOLVED(errno, "Waitpid returned the wrong PID"); 135 } 136 137 if (!WIFEXITED(status) || (WEXITSTATUS(status) != PTS_PASS)) { 138 FAILED("Child exited abnormally -- dir stream not copied?"); 139 } 140 141 /* close the directory stream */ 142 ret = closedir(dotdir); 143 144 if (ret != 0) { 145 UNRESOLVED(errno, "Failed to closedir in parent"); 146 } 147 148 #if VERBOSE > 0 149 output("Test passed\n"); 150 151 #endif 152 153 PASSED; 154 } 155
