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/stream1.c, by Airong Zhang */ 21 22 /*====================================================================== 23 =================== TESTPLAN SEGMENT =================== 24 >KEYS: < freopen() 25 >WHAT: < 1) check that freopen substitutes the named file in place of stream. 26 >HOW: < 1) open a stream, write something to it, perform freopen and 27 < write some more. Check that second write to stream went to 28 < the file specified by freopen. 29 >BUGS: < 30 ======================================================================*/ 31 32 #include <stdio.h> 33 #include <errno.h> 34 #include "test.h" 35 36 char *TCID = "stream01"; 37 int TST_TOTAL = 1; 38 int local_flag; 39 40 #define PASSED 1 41 #define FAILED 0 42 43 /* XXX: add setup and cleanup. */ 44 45 char progname[] = "stream01()"; 46 char tempfile1[40] = ""; 47 char tempfile2[40] = ""; 48 49 /*--------------------------------------------------------------------*/ 50 int main(int ac, char *av[]) 51 { 52 FILE *stream; 53 char buf[10]; 54 int i; 55 int lc; 56 57 /* 58 * parse standard options 59 */ 60 tst_parse_opts(ac, av, NULL, NULL); 61 62 local_flag = PASSED; 63 tst_tmpdir(); 64 for (lc = 0; TEST_LOOPING(lc); lc++) { 65 66 sprintf(tempfile1, "stream011.%d", getpid()); 67 sprintf(tempfile2, "stream012.%d", getpid()); 68 /*--------------------------------------------------------------------*/ 69 //block0: 70 if ((stream = fopen(tempfile1, "a+")) == NULL) { 71 tst_brkm(TFAIL, NULL, "fopen(%s) a+ failed: %s", 72 tempfile1, 73 strerror(errno)); 74 } 75 fwrite("a", 1, 1, stream); 76 if ((stream = freopen(tempfile2, "a+", stream)) == NULL) { 77 tst_brkm(TFAIL | TERRNO, NULL, "freopen(%s) a+ failed", 78 tempfile2); 79 } 80 fwrite("a", 1, 1, stream); 81 fclose(stream); 82 83 /* now check that a single "a" is in each file */ 84 if ((stream = fopen(tempfile1, "r")) == NULL) { 85 tst_brkm(TFAIL | TERRNO, NULL, "fopen(%s) r failed", 86 tempfile1); 87 } else { 88 for (i = 0; i < 10; i++) 89 buf[i] = 0; 90 fread(buf, 1, 1, stream); 91 if ((buf[0] != 'a') || (buf[1] != 0)) { 92 tst_resm(TFAIL, "bad contents in %s", 93 tempfile1); 94 local_flag = FAILED; 95 } 96 fclose(stream); 97 } 98 if ((stream = fopen(tempfile2, "r")) == NULL) { 99 tst_brkm(TFAIL | TERRNO, NULL, "fopen(%s) r failed", 100 tempfile2); 101 } else { 102 for (i = 0; i < 10; i++) 103 buf[i] = 0; 104 fread(buf, 1, 1, stream); 105 if ((buf[0] != 'a') || (buf[1] != 0)) { 106 tst_resm(TFAIL, "bad contents in %s", 107 tempfile2); 108 local_flag = FAILED; 109 } 110 fclose(stream); 111 } 112 if (local_flag == PASSED) { 113 tst_resm(TPASS, "Test passed."); 114 } else { 115 tst_resm(TFAIL, "Test failed."); 116 } 117 118 local_flag = PASSED; 119 120 /*--------------------------------------------------------------------*/ 121 unlink(tempfile1); 122 unlink(tempfile2); 123 124 } /* end for */ 125 tst_rmdir(); 126 tst_exit(); 127 } 128
