| /* |
| * |
| * 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/stream1.c, by Airong Zhang */ |
| |
| /*====================================================================== |
| =================== TESTPLAN SEGMENT =================== |
| >KEYS: < freopen() |
| >WHAT: < 1) check that freopen substitutes the named file in place of stream. |
| >HOW: < 1) open a stream, write something to it, perform freopen and |
| < write some more. Check that second write to stream went to |
| < the file specified by freopen. |
| >BUGS: < |
| ======================================================================*/ |
| |
| #include <stdio.h> |
| #include <errno.h> |
| #include "test.h" |
| #include "usctest.h" |
| |
| char *TCID = "stream01"; |
| int TST_TOTAL = 1; |
| int local_flag; |
| |
| #define PASSED 1 |
| #define FAILED 0 |
| |
| /* XXX: add setup and cleanup. */ |
| |
| char progname[] = "stream01()" ; |
| char tempfile1[40]=""; |
| char tempfile2[40]=""; |
| |
| /*--------------------------------------------------------------------*/ |
| int main(int ac, char *av[]) |
| { |
| FILE *stream; |
| char buf[10]; |
| int i; |
| int lc; |
| 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, "stream011.%d", getpid()); |
| sprintf(tempfile2, "stream012.%d", getpid()); |
| /*--------------------------------------------------------------------*/ |
| //block0: |
| if ((stream=fopen(tempfile1,"a+")) == NULL) { |
| tst_resm(TFAIL,"fopen(%s) a+ failed: %s", tempfile1, strerror(errno)); |
| tst_exit(); |
| } |
| fwrite("a",1,1,stream); |
| if ((stream=freopen(tempfile2,"a+",stream)) == NULL) { |
| tst_brkm(TFAIL|TERRNO, NULL, "freopen(%s) a+ failed", tempfile2); |
| } |
| fwrite("a",1,1,stream); |
| fclose(stream); |
| |
| /* now check that a single "a" is in each file */ |
| if ((stream=fopen(tempfile1,"r")) == NULL) { |
| tst_brkm(TFAIL|TERRNO, NULL, "fopen(%s) r failed", tempfile1); |
| } |
| else { |
| for (i=0; i<10; i++) buf[i]=0; |
| fread(buf,1,1,stream); |
| if ((buf[0] != 'a') || (buf[1] != 0)) { |
| tst_resm(TFAIL,"bad contents in %s", tempfile1); |
| local_flag = FAILED; |
| } |
| fclose(stream); |
| } |
| if ((stream=fopen(tempfile2,"r")) == NULL) { |
| tst_brkm(TFAIL|TERRNO, NULL, "fopen(%s) r failed", tempfile2); |
| } |
| else { |
| for (i=0; i<10; i++) buf[i]=0; |
| fread(buf,1,1,stream); |
| if ((buf[0] != 'a') || (buf[1] != 0)) { |
| tst_resm(TFAIL,"bad contents in %s", tempfile2); |
| local_flag = FAILED; |
| } |
| fclose(stream); |
| } |
| if (local_flag == PASSED) { |
| tst_resm(TPASS, "Test passed."); |
| } else { |
| tst_resm(TFAIL, "Test failed."); |
| } |
| |
| local_flag = PASSED; |
| |
| /*--------------------------------------------------------------------*/ |
| unlink(tempfile1); |
| unlink(tempfile2); |
| |
| } /* end for */ |
| tst_rmdir(); |
| tst_exit(); |
| } |