/* * * Copyright (c) International Business Machines Corp., 2002 * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See * the GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Ported from SPIE, section2/iosuite/stream4.c, by Airong Zhang */ /*====================================================================== =================== TESTPLAN SEGMENT =================== >KEYS: < fwrite() fread() >WHAT: < 1) Ensure fwrite appends data to stream. < 2) Ensure fread and fwrite return values are valid. >HOW: < 1) Open a file, write to it, and then check it. < 2) Fwrite a know quanity, check return value. < Fread a know quanity, check return value. >BUGS: < ======================================================================*/ #include <stdio.h> #include <errno.h> #include <fcntl.h> #include <sys/types.h> #include <sys/stat.h> #include "test.h" char *TCID = "stream04"; int TST_TOTAL = 1; int local_flag; #define PASSED 1 #define FAILED 0 char progname[] = "stream04()"; char tempfile1[40] = ""; long ftell(); /* XXX: add setup and cleanup */ /*--------------------------------------------------------------------*/ int main(int ac, char *av[]) { FILE *stream; char *junk = "abcdefghijklmnopqrstuvwxyz"; char *inbuf; int ret; int lc; /* * parse standard options */ tst_parse_opts(ac, av, NULL, NULL); tst_tmpdir(); for (lc = 0; TEST_LOOPING(lc); lc++) { local_flag = PASSED; sprintf(tempfile1, "stream04.%d", getpid()); /*--------------------------------------------------------------------*/ //block0: if ((stream = fopen(tempfile1, "a+")) == NULL) { tst_brkm(TFAIL | TERRNO, tst_rmdir, "fopen(%s) a+ failed", tempfile1); } /* write something and check */ if ((ret = fwrite(junk, sizeof(*junk), strlen(junk), stream)) == 0) { tst_brkm(TFAIL, tst_rmdir, "fwrite failed: %s", strerror(errno)); } if ((size_t) ret != strlen(junk)) { tst_resm(TFAIL, "strlen(junk) = %zi != return value from fwrite = %zi", strlen(junk), ret); local_flag = FAILED; } fclose(stream); if ((stream = fopen(tempfile1, "r+")) == NULL) { tst_brkm(TFAIL, tst_rmdir, "fopen(%s) r+ failed: %s", tempfile1, strerror(errno)); } if ((inbuf = malloc(strlen(junk))) == 0) { tst_brkm(TBROK, tst_rmdir, "test failed because of malloc: %s", strerror(errno)); } if ((ret = fread(inbuf, sizeof(*junk), strlen(junk), stream)) == 0) { tst_brkm(TFAIL, tst_rmdir, "fread failed: %s", strerror(errno)); } if ((size_t) ret != strlen(junk)) { tst_resm(TFAIL, "strlen(junk) = %zi != return value from fread = %zi", strlen(junk), ret); local_flag = FAILED; } fclose(stream); if (local_flag == PASSED) { tst_resm(TPASS, "Test passed."); } else { tst_resm(TFAIL, "Test failed."); } /*--------------------------------------------------------------------*/ unlink(tempfile1); } /* end for */ tst_rmdir(); tst_exit(); }