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/iosuite/stream4.c, by Airong Zhang */ 21 22 /*====================================================================== 23 =================== TESTPLAN SEGMENT =================== 24 >KEYS: < fwrite() fread() 25 >WHAT: < 1) Ensure fwrite appends data to stream. 26 < 2) Ensure fread and fwrite return values are valid. 27 >HOW: < 1) Open a file, write to it, and then check it. 28 < 2) Fwrite a know quanity, check return value. 29 < Fread a know quanity, check return value. 30 >BUGS: < 31 ======================================================================*/ 32 33 #include <stdio.h> 34 #include <errno.h> 35 #include <fcntl.h> 36 #include <sys/types.h> 37 #include <sys/stat.h> 38 #include "test.h" 39 40 char *TCID = "stream04"; 41 int TST_TOTAL = 1; 42 int local_flag; 43 44 #define PASSED 1 45 #define FAILED 0 46 47 char progname[] = "stream04()"; 48 char tempfile1[40] = ""; 49 long ftell(); 50 51 /* XXX: add setup and cleanup */ 52 53 /*--------------------------------------------------------------------*/ 54 int main(int ac, char *av[]) 55 { 56 FILE *stream; 57 char *junk = "abcdefghijklmnopqrstuvwxyz"; 58 char *inbuf; 59 int ret; 60 61 int lc; 62 63 /* 64 * parse standard options 65 */ 66 tst_parse_opts(ac, av, NULL, NULL); 67 tst_tmpdir(); 68 for (lc = 0; TEST_LOOPING(lc); lc++) { 69 70 local_flag = PASSED; 71 72 sprintf(tempfile1, "stream04.%d", getpid()); 73 /*--------------------------------------------------------------------*/ 74 //block0: 75 if ((stream = fopen(tempfile1, "a+")) == NULL) { 76 tst_brkm(TFAIL | TERRNO, tst_rmdir, "fopen(%s) a+ failed", 77 tempfile1); 78 } 79 /* write something and check */ 80 if ((ret = 81 fwrite(junk, sizeof(*junk), strlen(junk), stream)) == 0) { 82 tst_brkm(TFAIL, tst_rmdir, "fwrite failed: %s", 83 strerror(errno)); 84 } 85 86 if ((size_t) ret != strlen(junk)) { 87 tst_resm(TFAIL, 88 "strlen(junk) = %zi != return value from fwrite = %zi", 89 strlen(junk), ret); 90 local_flag = FAILED; 91 } 92 93 fclose(stream); 94 if ((stream = fopen(tempfile1, "r+")) == NULL) { 95 tst_brkm(TFAIL, tst_rmdir, "fopen(%s) r+ failed: %s", tempfile1, 96 strerror(errno)); 97 } 98 if ((inbuf = malloc(strlen(junk))) == 0) { 99 tst_brkm(TBROK, tst_rmdir, "test failed because of malloc: %s", 100 strerror(errno)); 101 } 102 if ((ret = 103 fread(inbuf, sizeof(*junk), strlen(junk), stream)) == 0) { 104 tst_brkm(TFAIL, tst_rmdir, "fread failed: %s", 105 strerror(errno)); 106 } 107 if ((size_t) ret != strlen(junk)) { 108 tst_resm(TFAIL, 109 "strlen(junk) = %zi != return value from fread = %zi", 110 strlen(junk), ret); 111 local_flag = FAILED; 112 } 113 fclose(stream); 114 if (local_flag == PASSED) { 115 tst_resm(TPASS, "Test passed."); 116 } else { 117 tst_resm(TFAIL, "Test failed."); 118 } 119 /*--------------------------------------------------------------------*/ 120 unlink(tempfile1); 121 } /* end for */ 122 tst_rmdir(); 123 tst_exit(); 124 } 125
