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 * Test Name: stat02 22 * 23 * Test Description: 24 * Verify that, stat(2) succeeds to get the status of a file and fills the 25 * stat structure elements though process doesn't have read access to the 26 * file. 27 * 28 * Expected Result: 29 * stat() should return value 0 on success and the stat structure elements 30 * should be filled with specified 'file' information. 31 * 32 * Algorithm: 33 * Setup: 34 * Setup signal handling. 35 * Create temporary directory. 36 * Pause for SIGUSR1 if option specified. 37 * 38 * Test: 39 * Loop if the proper options are given. 40 * Execute system call 41 * Check return code, if system call failed (return=-1) 42 * Log the errno and Issue a FAIL message. 43 * Otherwise, 44 * Verify the Functionality of system call 45 * if successful, 46 * Issue Functionality-Pass message. 47 * Otherwise, 48 * Issue Functionality-Fail message. 49 * Cleanup: 50 * Print errno log and/or timing stats if options given 51 * Delete the temporary directory created. 52 * 53 * Usage: <for command-line> 54 * stat02 [-c n] [-e] [-f] [-i n] [-I x] [-p x] [-t] 55 * where, -c n : Run n copies concurrently. 56 * -e : Turn on errno logging. 57 * -f : Turn off functionality Testing. 58 * -i n : Execute test n times. 59 * -I x : Execute test for x seconds. 60 * -P x : Pause for x seconds between iterations. 61 * -t : Turn on syscall timing. 62 * 63 * History 64 * 07/2001 John George 65 * -Ported 66 * 67 * Restrictions: 68 * 69 */ 70 #include <stdio.h> 71 #include <sys/types.h> 72 #include <fcntl.h> 73 #include <sys/stat.h> 74 #include <errno.h> 75 #include <string.h> 76 #include <signal.h> 77 #include <pwd.h> 78 79 #include "test.h" 80 81 #define FILE_MODE S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH 82 #define TESTFILE "testfile" 83 #define FILE_SIZE 1024 84 #define BUF_SIZE 256 85 #define NEW_MODE 0222 86 #define MASK 0777 87 88 char *TCID = "stat02"; 89 int TST_TOTAL = 1; 90 91 uid_t user_id; /* eff. user id/group id of test process */ 92 gid_t group_id; 93 char nobody_uid[] = "nobody"; 94 struct passwd *ltpuser; 95 96 void setup(); 97 void cleanup(); 98 99 int main(int ac, char **av) 100 { 101 struct stat stat_buf; /* stat structure buffer */ 102 int lc; 103 104 tst_parse_opts(ac, av, NULL, NULL); 105 106 setup(); 107 108 for (lc = 0; TEST_LOOPING(lc); lc++) { 109 110 tst_count = 0; 111 112 /* 113 * Call stat(2) to get the status of 114 * specified 'file' into stat structure. 115 */ 116 TEST(stat(TESTFILE, &stat_buf)); 117 118 if (TEST_RETURN == -1) { 119 tst_resm(TFAIL, 120 "stat(%s, &stat_buf) Failed, errno=%d : %s", 121 TESTFILE, TEST_ERRNO, strerror(TEST_ERRNO)); 122 } else { 123 stat_buf.st_mode &= ~S_IFREG; 124 /* 125 * Verify the data returned by stat(2) 126 * aganist the expected data. 127 */ 128 if ((stat_buf.st_uid != user_id) || 129 (stat_buf.st_gid != group_id) || 130 (stat_buf.st_size != FILE_SIZE) || 131 ((stat_buf.st_mode & MASK) != NEW_MODE)) { 132 tst_resm(TFAIL, "Functionality of " 133 "stat(2) on '%s' Failed", 134 TESTFILE); 135 } else { 136 tst_resm(TPASS, "Functionality of " 137 "stat(2) on '%s' Succcessful", 138 TESTFILE); 139 } 140 } 141 tst_count++; /* incr TEST_LOOP counter */ 142 } 143 144 cleanup(); 145 tst_exit(); 146 } 147 148 /* 149 * void 150 * setup() - Performs setup function for the test. 151 * Creat a temporary directory and change directory to it. 152 * Creat a testfile and write some data into it. 153 * Modify the mode permissions of testfile such that test process 154 * has read-only access to testfile. 155 */ 156 void setup(void) 157 { 158 int i, fd; /* counter, file handle for file */ 159 char tst_buff[BUF_SIZE]; /* data buffer for file */ 160 int wbytes; /* no. of bytes written to file */ 161 int write_len = 0; 162 163 tst_require_root(); 164 165 tst_sig(NOFORK, DEF_HANDLER, cleanup); 166 167 /* Switch to nobody user for correct error code collection */ 168 ltpuser = getpwnam(nobody_uid); 169 if (setuid(ltpuser->pw_uid) == -1) { 170 tst_resm(TINFO, "setuid failed to " 171 "to set the effective uid to %d", ltpuser->pw_uid); 172 perror("setuid"); 173 } 174 175 /* Pause if that option was specified 176 * TEST_PAUSE contains the code to fork the test with the -i option. 177 * You want to make sure you do this before you create your temporary 178 * directory. 179 */ 180 TEST_PAUSE; 181 182 tst_tmpdir(); 183 184 if ((fd = open(TESTFILE, O_RDWR | O_CREAT, FILE_MODE)) == -1) { 185 tst_brkm(TBROK, cleanup, 186 "open(%s, O_RDWR|O_CREAT, %#o) Failed, errno=%d : %s", 187 TESTFILE, FILE_MODE, errno, strerror(errno)); 188 } 189 190 /* Fill the test buffer with the known data */ 191 for (i = 0; i < BUF_SIZE; i++) { 192 tst_buff[i] = 'a'; 193 } 194 195 /* Write to the file 1k data from the buffer */ 196 while (write_len < FILE_SIZE) { 197 if ((wbytes = write(fd, tst_buff, sizeof(tst_buff))) <= 0) { 198 tst_brkm(TBROK | TERRNO, cleanup, "write to %s failed", 199 TESTFILE); 200 } else { 201 write_len += wbytes; 202 } 203 } 204 205 if (close(fd) == -1) { 206 tst_resm(TWARN | TERRNO, "closing %s failed", TESTFILE); 207 } 208 209 /* Modify mode permissions on the testfile */ 210 if (chmod(TESTFILE, NEW_MODE) < 0) { 211 tst_brkm(TBROK | TERRNO, cleanup, "chmodding %s failed", 212 TESTFILE); 213 } 214 215 /* Get the uid/gid of the process */ 216 user_id = getuid(); 217 group_id = getgid(); 218 219 } 220 221 /* 222 * cleanup() - performs all ONE TIME cleanup for this test at 223 * completion or premature exit. 224 * Remove the temporary directory and file created. 225 */ 226 void cleanup(void) 227 { 228 229 tst_rmdir(); 230 } 231
