1 /* 2 * 3 * Copyright (c) International Business Machines Corp., 2001 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation; either version 2 of the License, or 8 * (at your option) any later version. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 13 * the GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 18 */ 19 20 /* 21 * NAME 22 * dup202.c 23 * 24 * DESCRIPTION 25 * Is the access mode the same for both file descriptors? 26 * 0: read only ? "0444" 27 * 1: write only ? "0222" 28 * 2: read/write ? "0666" 29 * 30 * ALGORITHM 31 * Creat a file with each access mode; dup each file descriptor; 32 * stat each file descriptor and compare modes of each pair 33 * 34 * USAGE: <for command-line> 35 * dup202 [-c n] [-f] [-i n] [-I x] [-P x] [-t] 36 * where, -c n : Run n copies concurrently. 37 * -f : Turn off functionality Testing. 38 * -i n : Execute test n times. 39 * -I x : Execute test for x seconds. 40 * -P x : Pause for x seconds between iterations. 41 * -t : Turn on syscall timing. 42 * 43 * HISTORY 44 * 07/2001 Ported by Wayne Boyer 45 * 46 * RESTRICTIONS 47 * None 48 */ 49 50 #include <sys/types.h> 51 #include <sys/stat.h> 52 #include <errno.h> 53 #include <fcntl.h> 54 #include <stdio.h> 55 #include "test.h" 56 57 char *TCID = "dup202"; 58 int TST_TOTAL = 3; 59 60 void setup(void); 61 void cleanup(void); 62 63 char testfile[40]; 64 int fail; 65 int newfd; 66 67 /* set these to a known index into our local file descriptor table */ 68 int duprdo = 10, dupwro = 20, duprdwr = 30; 69 70 struct test_case_t { 71 int *nfd; 72 mode_t mode; 73 } TC[] = { 74 /* The first test creat(es) a file with mode 0444 */ 75 { 76 &duprdo, (S_IRUSR | S_IRGRP | S_IROTH)}, 77 /* The second test creat(es) a file with mode 0222 */ 78 { 79 &dupwro, (S_IWUSR | S_IWGRP | S_IWOTH)}, 80 /* The third test creat(es) a file with mode 0666 */ 81 { 82 &duprdwr, 83 (S_IRUSR | S_IRGRP | S_IROTH | S_IWUSR | S_IWGRP | S_IWOTH)} 84 }; 85 86 int main(int ac, char **av) 87 { 88 int lc; 89 int i, ofd; 90 struct stat oldbuf, newbuf; 91 92 tst_parse_opts(ac, av, NULL, NULL); 93 94 setup(); 95 96 for (lc = 0; TEST_LOOPING(lc); lc++) { 97 98 tst_count = 0; 99 100 /* loop through the test cases */ 101 for (i = 0; i < TST_TOTAL; i++) { 102 103 if ((ofd = creat(testfile, TC[i].mode)) == -1) 104 tst_brkm(TBROK | TERRNO, cleanup, 105 "creat failed"); 106 107 TEST(dup2(ofd, *TC[i].nfd)); 108 109 if (TEST_RETURN == -1) { 110 tst_resm(TFAIL | TERRNO, 111 "call failed unexpectedly"); 112 continue; 113 } 114 115 /* stat the original file */ 116 if (fstat(ofd, &oldbuf) == -1) 117 tst_brkm(TBROK | TERRNO, cleanup, 118 "fstat #1 failed"); 119 120 /* stat the duped file */ 121 if (fstat(*TC[i].nfd, &newbuf) == -1) 122 tst_brkm(TBROK | TERRNO, cleanup, 123 "fstat #2 failed"); 124 125 if (oldbuf.st_mode != newbuf.st_mode) 126 tst_resm(TFAIL, "original and dup " 127 "modes do not match"); 128 else 129 tst_resm(TPASS, "fstat shows new and " 130 "old modes are the same"); 131 132 /* remove the file so that we can use it again */ 133 if (close(*TC[i].nfd) == -1) 134 perror("close failed"); 135 if (close(ofd) == -1) 136 perror("close failed"); 137 if (unlink(testfile) == -1) 138 perror("unlink failed"); 139 } 140 } 141 142 cleanup(); 143 tst_exit(); 144 } 145 146 /* 147 * setup() - performs all ONE TIME setup for this test. 148 */ 149 void setup(void) 150 { 151 152 tst_sig(NOFORK, DEF_HANDLER, cleanup); 153 154 TEST_PAUSE; 155 156 tst_tmpdir(); 157 158 (void)umask(0); 159 160 sprintf(testfile, "dup202.%d", getpid()); 161 } 162 163 /* 164 * cleanup() - performs all ONE TIME cleanup for this test at 165 * completion or premature exit. 166 */ 167 void cleanup(void) 168 { 169 tst_rmdir(); 170 } 171