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