| /* |
| * |
| * 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; |
| const char *msg; |
| |
| /* |
| * parse standard options |
| */ |
| if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL) { |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| } |
| |
| 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(); |
| } |