1 /* 2 * 3 * Copyright (C) Bull S.A. 2001 4 * Copyright (c) International Business Machines Corp., 2001 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 14 * the GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20 21 /* 22 * Test Name: pread03 23 * 24 * Test Description: 25 * Verify that, 26 * 1) pread() fails when fd refers to a directory. 27 * 28 * 29 * Expected Result: 30 * 1) pread() should return -1 and set errno to EISDIR. 31 * 32 * Algorithm: 33 * Setup: 34 * Setup signal handling. 35 * Pause for SIGUSR1 if option specified. 36 * Create a temporary directory. 37 * Get the currect directory name 38 * Open temporary directory 39 * 40 * Test: 41 * Loop if the proper options are given. 42 * Execute system call 43 * Check return code, if system call failed (return=-1) 44 * if errno set == expected errno 45 * Issue sys call fails with expected return value and errno. 46 * Otherwise, 47 * Issue sys call fails with unexpected errno. 48 * Otherwise, 49 * Issue sys call returns unexpected value. 50 * 51 * Cleanup: 52 * Print errno log and/or timing stats if options given 53 * Delete the temporary directory(s)/file(s) created. 54 * 55 * Usage: <for command-line> 56 * pread03 [-c n] [-e] [-i n] [-I x] [-P x] [-t] 57 * where, -c n : Run n copies concurrently. 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 * 04/2002 Ported by Andr Merlier 65 * 66 * RESTRICTIONS: 67 * None. 68 */ 69 70 #define _XOPEN_SOURCE 500 71 72 #include <sys/stat.h> 73 #include <sys/types.h> 74 #include <errno.h> 75 #include <unistd.h> 76 #include <fcntl.h> 77 #include <string.h> 78 #include <stdlib.h> 79 #include <sys/file.h> 80 81 #include "test.h" 82 83 #define PREAD_TEMPDIR "test" 84 #define K1 2048 85 #define NBUFS 1 86 87 char *TCID = "pread03"; 88 int TST_TOTAL = 1; 89 90 char *read_buf[NBUFS]; /* buffer to hold data read from file */ 91 int fd1; 92 93 void setup(); /* Main setup function of test */ 94 void cleanup(); /* cleanup function for the test */ 95 void init_buffers(); /* function to initialize/allocate buffers */ 96 97 int main(int ac, char **av) 98 { 99 int lc; 100 size_t nbytes; /* no. of bytes to be written */ 101 off_t offset; /* offset position in the specified file */ 102 char *test_desc; /* test specific error message */ 103 104 tst_parse_opts(ac, av, NULL, NULL); 105 106 setup(); 107 108 /* Check for looping state if -i option is given */ 109 for (lc = 0; TEST_LOOPING(lc); lc++) { 110 /* reset tst_count in case we are looping */ 111 tst_count = 0; 112 113 test_desc = "EISDIR"; 114 nbytes = K1; 115 offset = 20; 116 117 TEST(pread(fd1, read_buf[0], nbytes, offset)); 118 119 /* Check for the return code of pread() */ 120 if (TEST_RETURN != -1) { 121 tst_brkm(TFAIL, cleanup, "pread() returned " 122 "%ld, expected -1, errno:%d\n", 123 TEST_RETURN, EISDIR); 124 } 125 126 /* 127 * Verify whether expected errno is set. 128 */ 129 if (TEST_ERRNO == EISDIR) { 130 tst_resm(TPASS, 131 "pread() fails with expected error EISDIR errno:%d", 132 TEST_ERRNO); 133 } else { 134 tst_resm(TFAIL, "pread() fails, %s, unexpected " 135 "errno:%d, expected:%d\n", test_desc, 136 TEST_ERRNO, EISDIR); 137 } 138 } 139 140 cleanup(); 141 tst_exit(); 142 143 } 144 145 /* 146 * setup() - performs all ONE TIME setup for this test. 147 * create temporary directory and open it 148 */ 149 void setup(void) 150 { 151 tst_sig(FORK, DEF_HANDLER, cleanup); 152 153 TEST_PAUSE; 154 155 /* Allocate the read buffer */ 156 init_buffers(); 157 158 tst_tmpdir(); 159 160 /* 161 * create a temporary directory 162 */ 163 if (mkdir(PREAD_TEMPDIR, 0777) != 0) { 164 tst_resm(TFAIL, "mkdir() failed to create" " test directory"); 165 exit(1); 166 167 } 168 169 /* open temporary directory used for test */ 170 if ((fd1 = open(PREAD_TEMPDIR, O_RDONLY)) < 0) { 171 tst_brkm(TBROK, cleanup, "open() on %s Failed, errno=%d : %s", 172 PREAD_TEMPDIR, errno, strerror(errno)); 173 } 174 } 175 176 /* 177 * init_buffers() - allocate/Initialize write_buf array. 178 * 179 * Allocate read buffer. 180 */ 181 void init_buffers(void) 182 { 183 int count; /* counter variable for loop */ 184 185 /* Allocate and Initialize read buffer */ 186 for (count = 0; count < NBUFS; count++) { 187 read_buf[count] = malloc(K1); 188 189 if (read_buf[count] == NULL) { 190 tst_brkm(TBROK, NULL, 191 "malloc() failed on read buffers"); 192 } 193 } 194 } 195 196 /* 197 * cleanup() - performs all ONE TIME cleanup for this test at 198 * completion or premature exit. 199 * 200 * Close/Remove the temporary directory created. 201 */ 202 void cleanup(void) 203 { 204 int count; 205 206 /* Free the memory allocated for the read buffer */ 207 for (count = 0; count < NBUFS; count++) { 208 free(read_buf[count]); 209 } 210 211 /* delete the test directory created in setup() */ 212 tst_rmdir(); 213 214 } 215
