1 /* 2 * 3 * Copyright (c) International Business Machines Corp., 2002 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 /* ported from SPIE, section2/filesuite/stream.c, by Airong Zhang */ 21 22 /*====================================================================== 23 =================== TESTPLAN SEGMENT =================== 24 >KEYS: < ferror() feof() clearerr() fileno() 25 >WHAT: < 1) check that ferror returns zero 26 < 2) check fileno returns valid file descriptor 27 < 3) check that feof returns zero (nonzero) appropriately 28 < 4) check that clearerr resets EOF indicator. 29 >HOW: < 1) open a stream and immediately execute ferror 30 < 2) use the file des returned from fileno to read a file 31 < written with stream - compare actual vs expected. 32 < 3) open stream and ensure feof returns zero, read to end of 33 < file and ensure feof returns non-zero. 34 < 4) after 3) above use clearerr and then use feof to ensure 35 < clearerr worked 36 >BUGS: < 37 ======================================================================*/ 38 39 #include <unistd.h> 40 #include <stdio.h> 41 #include <errno.h> 42 #include "test.h" 43 44 char *TCID = "stream05"; 45 int TST_TOTAL = 1; 46 int local_flag; 47 48 #define PASSED 1 49 #define FAILED 0 50 51 char progname[] = "stream05()"; 52 char tempfile[40] = ""; 53 54 /*--------------------------------------------------------------------*/ 55 int main(int ac, char *av[]) 56 { 57 FILE *stream; 58 char buf[10]; 59 int nr, fd; 60 61 int lc; 62 63 /* 64 * parse standard options 65 */ 66 tst_parse_opts(ac, av, NULL, NULL); 67 tst_tmpdir(); 68 local_flag = PASSED; 69 70 for (lc = 0; TEST_LOOPING(lc); lc++) { 71 local_flag = PASSED; 72 73 sprintf(tempfile, "stream05.%d", getpid()); 74 /*--------------------------------------------------------------------*/ 75 //block0: 76 if ((stream = fopen(tempfile, "a+")) == NULL) { 77 tst_brkm(TFAIL, NULL, "fopen(%s) a+ failed: %s", 78 tempfile, 79 strerror(errno)); 80 } 81 fprintf(stream, "a"); 82 fclose(stream); 83 84 if ((stream = fopen(tempfile, "r+")) == NULL) { 85 tst_brkm(TFAIL, NULL, "fopen(%s) r+ failed: %s", 86 tempfile, 87 strerror(errno)); 88 } 89 90 /* check that ferror returns zero */ 91 if (ferror(stream) != 0) { 92 tst_resm(TFAIL, "ferror did not return zero: %s", 93 strerror(errno)); 94 local_flag = FAILED; 95 } 96 97 if (local_flag == PASSED) { 98 tst_resm(TPASS, "Test passed in block0."); 99 } else { 100 tst_resm(TFAIL, "Test failed in block0."); 101 } 102 103 local_flag = PASSED; 104 105 /*--------------------------------------------------------------------*/ 106 //block1: 107 108 /* check that fileno returns valid file descriptor */ 109 fd = fileno(stream); 110 if ((nr = read(fd, buf, 1)) < 0) { 111 tst_brkm(TFAIL, NULL, "read failed: %s", 112 strerror(errno)); 113 } 114 if (nr != 1) { 115 tst_resm(TFAIL, "read did not read right number"); 116 local_flag = FAILED; 117 } 118 if (buf[0] != 'a') { 119 tst_resm(TFAIL, "read returned bad values"); 120 local_flag = FAILED; 121 } 122 if (local_flag == PASSED) { 123 tst_resm(TPASS, "Test passed in block1."); 124 } else { 125 tst_resm(TFAIL, "Test failed in block1."); 126 } 127 128 local_flag = PASSED; 129 /*--------------------------------------------------------------------*/ 130 //block2: 131 132 /* read to EOF and ensure feof returns non-zero */ 133 fclose(stream); 134 135 if ((stream = fopen(tempfile, "r+")) == NULL) { 136 tst_brkm(TFAIL, NULL, "fopen(%s) r+ failed: %s", 137 tempfile, 138 strerror(errno)); 139 } 140 if (feof(stream) != 0) { 141 tst_resm(TFAIL, 142 "feof returned non-zero when it should not: %s", 143 strerror(errno)); 144 local_flag = FAILED; 145 } 146 fread(buf, 1, 2, stream); /* read to EOF */ 147 if (feof(stream) == 0) { 148 tst_resm(TFAIL, 149 "feof returned zero when it should not: %s", 150 strerror(errno)); 151 local_flag = FAILED; 152 } 153 154 if (local_flag == PASSED) { 155 tst_resm(TPASS, "Test passed in block2."); 156 } else { 157 tst_resm(TFAIL, "Test failed in block2."); 158 } 159 160 local_flag = PASSED; 161 /*--------------------------------------------------------------------*/ 162 //block3: 163 /* ensure clearerr works */ 164 clearerr(stream); 165 if (feof(stream) != 0) { 166 tst_resm(TFAIL, "clearerr failed: %s", strerror(errno)); 167 local_flag = FAILED; 168 } 169 if (local_flag == PASSED) { 170 tst_resm(TPASS, "Test passed in block3."); 171 } else { 172 tst_resm(TFAIL, "Test failed in block3."); 173 } 174 175 local_flag = PASSED; 176 /*--------------------------------------------------------------------*/ 177 //block4: 178 179 /* test fopen "b" flags -- should be allowed but ignored */ 180 (void)fclose(stream); 181 182 if ((stream = fopen(tempfile, "rb")) == NULL) { 183 tst_brkm(TFAIL, NULL, "fopen(%s) rb failed: %s", 184 tempfile, 185 strerror(errno)); 186 } 187 (void)fclose(stream); 188 189 if ((stream = fopen(tempfile, "wb")) == NULL) { 190 tst_brkm(TFAIL, NULL, "fopen(%s) wb failed: %s", 191 tempfile, 192 strerror(errno)); 193 } 194 (void)fclose(stream); 195 196 if ((stream = fopen(tempfile, "ab")) == NULL) { 197 tst_brkm(TFAIL, NULL, "fopen(%s) ab failed: %s", 198 tempfile, 199 strerror(errno)); 200 } 201 (void)fclose(stream); 202 203 if ((stream = fopen(tempfile, "rb+")) == NULL) { 204 tst_brkm(TFAIL, NULL, "fopen(%s) rb+ failed: %s", 205 tempfile, 206 strerror(errno)); 207 } 208 (void)fclose(stream); 209 210 if ((stream = fopen(tempfile, "wb+")) == NULL) { 211 tst_brkm(TFAIL, NULL, "fopen(%s) wb+ failed: %s", 212 tempfile, 213 strerror(errno)); 214 } 215 (void)fclose(stream); 216 217 if ((stream = fopen(tempfile, "ab+")) == NULL) { 218 tst_brkm(TFAIL, NULL, "fopen(%s) ab+ failed: %s", 219 tempfile, 220 strerror(errno)); 221 } 222 (void)fclose(stream); 223 224 tst_resm(TPASS, "Test passed in block4."); 225 /*--------------------------------------------------------------------*/ 226 unlink(tempfile); 227 } /* end for */ 228 tst_rmdir(); 229 tst_exit(); 230 } 231
