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298 lines
7.0 KiB
298 lines
7.0 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/filesuite/stream3.c, by Airong Zhang */
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/*======================================================================
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=================== TESTPLAN SEGMENT ===================
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>KEYS: < fseek() ftell()
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>WHAT: < 1) Ensure ftell reports the correct current byte offset.
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>HOW: < 1) Open a file, write to it, reposition the file pointer and
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check it.
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>BUGS: <
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======================================================================*/
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#define _XOPEN_SOURCE 500
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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 <inttypes.h>
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#include "test.h"
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char *TCID = "stream03";
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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[] = "stream03()";
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char tempfile1[40] = "";
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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 buf[30];
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char *junk = "abcdefghijklmnopqrstuvwxyz";
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long pos;
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off_t opos;
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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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local_flag = PASSED;
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tst_tmpdir();
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for (lc = 0; TEST_LOOPING(lc); lc++) {
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sprintf(tempfile1, "stream03.%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(TBROK, NULL, "fopen(%s) a+ failed: %s",
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tempfile1,
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strerror(errno));
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}
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/* make sure offset of zero at start */
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pos = ftell(stream);
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if (pos != 0) {
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tst_resm(TFAIL, "file pointer descrepancy 1");
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local_flag = FAILED;
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}
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/* write something and check */
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if (fwrite(junk, sizeof(*junk), strlen(junk), stream) == 0) {
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tst_brkm(TFAIL, NULL, "fwrite failed: %s",
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strerror(errno));
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}
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pos = ftell(stream);
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if (pos != strlen(junk)) {
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tst_resm(TFAIL,
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"strlen(junk)=%zi: file pointer descrepancy 2 (pos=%li)",
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strlen(junk), pos);
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local_flag = FAILED;
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}
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/* rewind and check */
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rewind(stream);
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pos = ftell(stream);
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if (pos != 0) {
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tst_resm(TFAIL,
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"file pointer descrepancy 3 (pos=%li, wanted pos=0)",
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pos);
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local_flag = FAILED;
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}
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/* seek from current position and then check */
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if (fseek(stream, strlen(junk), 1) != 0) {
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tst_brkm(TFAIL, NULL, "fseek failed: %s",
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strerror(errno));
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}
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pos = ftell(stream);
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if (pos != strlen(junk)) {
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tst_resm(TFAIL,
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"strlen(junk)=%zi: file pointer descrepancy 4 (pos=%li)",
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strlen(junk), pos);
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local_flag = FAILED;
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}
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/* seek from end of file and then check */
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if (fseek(stream, 0, 2) != 0) {
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tst_brkm(TFAIL, NULL, "fseek failed: %s",
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strerror(errno));
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}
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pos = ftell(stream);
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if (pos != strlen(junk)) {
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tst_resm(TFAIL,
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"strlen(junk)=%zi: file pointer descrepancy 5 (pos=%li)",
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strlen(junk), pos);
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local_flag = FAILED;
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}
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/* rewind with seek and then check */
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if (fseek(stream, 0, 0) != 0) {
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tst_brkm(TFAIL, NULL, "fseek failed: %s",
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strerror(errno));
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}
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pos = ftell(stream);
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if (pos != 0) {
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tst_resm(TFAIL,
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"file pointer descrepancy 6 (pos=%li, wanted pos=0)",
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pos);
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local_flag = FAILED;
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}
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/* read till EOF, do getc and then check ftell */
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while (fgets(buf, sizeof(buf), stream)) ;
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pos = ftell(stream);
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getc(stream);
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pos = ftell(stream);
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if (pos != strlen(junk)) {
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tst_resm(TFAIL,
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"strlen(junk)=%zi: file pointer descrepancy 7 (pos=%li)",
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strlen(junk), pos);
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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 in block0.");
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} else {
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tst_resm(TFAIL, "Test failed in block0.");
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}
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local_flag = PASSED;
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unlink(tempfile1);
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/*--------------------------------------------------------------------*/
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//block1:
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if ((stream = fopen(tempfile1, "a+")) == NULL) {
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tst_brkm(TFAIL, NULL, "fopen(%s) a+ failed: %s",
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tempfile1,
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strerror(errno));
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}
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/* make sure offset of zero at start */
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opos = ftello(stream);
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if (opos != 0) {
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tst_resm(TFAIL,
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"file pointer descrepancy 1 (opos=%" PRId64
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", wanted opos=0)", (int64_t) opos);
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local_flag = FAILED;
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}
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/* write something and check */
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if (fwrite(junk, sizeof(*junk), strlen(junk), stream) == 0) {
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tst_brkm(TFAIL, NULL, "fwrite failed: %s",
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strerror(errno));
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}
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opos = ftello(stream);
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if (opos != strlen(junk)) {
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tst_resm(TFAIL,
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"strlen(junk)=%zi: file pointer descrepancy 2 (opos=%"
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PRId64 ")", strlen(junk), (int64_t) opos);
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local_flag = FAILED;
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}
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/* rewind and check */
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rewind(stream);
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opos = ftello(stream);
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if (opos != 0) {
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tst_resm(TFAIL,
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"file pointer descrepancy 3 (opos=%" PRId64
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", wanted opos=0)", (int64_t) opos);
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local_flag = FAILED;
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}
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/* seek from current position and then check */
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if (fseeko(stream, strlen(junk), 1) != 0) {
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tst_brkm(TFAIL, NULL, "fseeko failed: %s",
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strerror(errno));
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}
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opos = ftello(stream);
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if (opos != strlen(junk)) {
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tst_resm(TFAIL,
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"strlen(junk)=%zi: file pointer descrepancy 4 (opos=%"
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PRId64 ")", strlen(junk), (int64_t) opos);
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local_flag = FAILED;
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}
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/* seek from end of file and then check */
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if (fseeko(stream, 0, 2) != 0) {
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tst_brkm(TFAIL, NULL, "fseeko failed: %s",
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strerror(errno));
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}
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opos = ftello(stream);
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if (opos != strlen(junk)) {
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tst_resm(TFAIL,
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"strlen(junk)=%zi: file pointer descrepancy 5 (opos=%"
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PRId64 ")", strlen(junk), (int64_t) opos);
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local_flag = FAILED;
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}
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/* rewind with seek and then check */
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if (fseeko(stream, 0, 0) != 0) {
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tst_brkm(TFAIL, NULL, "fseeko failed: %s",
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strerror(errno));
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}
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opos = ftello(stream);
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if (opos != 0) {
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tst_resm(TFAIL,
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"file pointer descrepancy 6 (opos=%" PRId64
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", wanted opos=0)", (int64_t) opos);
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local_flag = FAILED;
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}
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/* read till EOF, do getc and then check ftello */
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while (fgets(buf, sizeof(buf), stream)) ;
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opos = ftello(stream);
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getc(stream);
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opos = ftello(stream);
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if (opos != strlen(junk)) {
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tst_resm(TFAIL,
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"strlen(junk)=%zi: file pointer descrepancy 7 (opos=%li)",
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strlen(junk), opos);
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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 in block1.");
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} else {
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tst_resm(TFAIL, "Test failed in block1.");
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}
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unlink(tempfile1);
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}
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tst_rmdir();
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tst_exit();
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}
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