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