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Diffstat (limited to 'winsup/testsuite/winsup.api/mmaptest01.c')
| -rw-r--r-- | winsup/testsuite/winsup.api/mmaptest01.c | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/winsup/testsuite/winsup.api/mmaptest01.c b/winsup/testsuite/winsup.api/mmaptest01.c deleted file mode 100644 index 99a7d2ef1..000000000 --- a/winsup/testsuite/winsup.api/mmaptest01.c +++ /dev/null @@ -1,173 +0,0 @@ -/* - Copyright 2001 Free Software Foundation, Inc. - Written by Michael Chastain, <chastain@redhat.com> - Changes by Corinna Vinschen, <corinna@vinschen.de>: - - Using mkstemp to generate filenames. - - Adding tests - - 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., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. - - This program demonstrates a bug in cygwin's mmap. - I open one file, mmap it, and close it. - I open a different file, mmap it, and close it. - - The second file re-uses the file handle (which is OK), - but then it re-uses the buffer as well! Ouch! - - This bug occurs on cygwin1.dll dated 2001-01-31. - It causes gnu cpp to screw up its include file buffers. - - Compile with "gcc -o y1 y1.c". - - Output from a bad cygwin1.dll: - - y1.txt: 3 0x4660000 y1 y1 y1 y1 y1 y1 y1 - y2.txt: 3 0x4660000 y1 y1 y1 y1 y1 y1 y1 - - Output from a good cygwin1.dll: - - y1.txt: 3 0x14060000 y1 y1 y1 y1 y1 y1 y1 - y2.txt: 3 0x14070000 y2 y2 y2 y2 y2 y2 y2 - - Output from Red Hat Linux 7: - - y1.txt: 3 0x40017000 y1 y1 y1 y1 y1 y1 y1 - y2.txt: 3 0x40018000 y2 y2 y2 y2 y2 y2 y2 - */ - -#include <sys/mman.h> -#include <fcntl.h> -#include <string.h> - -#include "test.h" -#include "usctest.h" - -const char *TCID = "mmaptest01"; /* Test program identifier. */ -int TST_TOTAL = 7; /* Total number of test cases. */ -extern int Tst_count; /* Test Case counter for tst_* routines */ - -/* some systems have O_BINARY and some do not */ -#ifndef O_BINARY -#define O_BINARY 0 -#endif - -/* filler for file 1 */ -char const line1 [] = "y1 y1 y1 y1 y1 y1 y1 y1 y1 y1 y1 y1 y1 y1 y1 y1 y1\n"; -#define size1 (sizeof(line1) - 1) -#define count1 ((4096 / size1) + 1) - -/* filler for file 2 */ -char const line2 [] = "y2 y2 y2 y2 y2 y2 y2 y2 y2 y2 y2 y2 y2 y2 y2 y2 y2\n"; -#define size2 (sizeof(line2) - 1) -#define count2 ((4096 / size2) + 1) - -int main () -{ - char fnam1[32]; - char fnam2[32]; - - int fd1; - char * buf1; - - int fd2; - char * buf2; - - char buf3[20]; - - unsigned i; - - strcpy (fnam1, "mmaptest01.1.XXXXXX"); - strcpy (fnam2, "mmaptest01.2.XXXXXX"); - - /* create file 1 */ - //fd1 = open (fnam1, O_WRONLY|O_CREAT|O_TRUNC|O_BINARY, 0644); - fd1 = mkstemp (fnam1); - for (i = 0; i < count1; i++) - write (fd1, line1, size1); - close (fd1); - - /* create file 2 */ - //fd2 = open (fnam2, O_WRONLY|O_CREAT|O_TRUNC|O_BINARY, 0644); - fd2 = mkstemp (fnam2); - for (i = 0; i < count2; i++) - write (fd2, line2, size2); - close (fd2); - - /* mmap file 1 */ - fd1 = open (fnam1, O_RDONLY | O_BINARY, 0644); - buf1 = mmap (0, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE, fd1, 0); - close (fd1); - - /* mmap file 2 */ - fd2 = open (fnam2, O_RDONLY | O_BINARY, 0644); - buf2 = mmap (0, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE, fd2, 0); - close (fd2); - - /* the buffers have to be different */ - Tst_count = 0; - tst_resm (buf1 == buf2 || !memcmp (buf1, buf2, 20) ? TFAIL : TPASS, - "mmap uses unique buffers when mapping different already closed files"); - munmap (buf2, 4096); - - /* mmap file 1 twice with MAP_PRIVATE */ - fd2 = open (fnam1, O_RDONLY | O_BINARY, 0644); - buf2 = mmap (0, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE, fd2, 0); - close (fd2); - - tst_resm (buf1 == buf2 ? TFAIL : TPASS, - "mmap uses different buffers on MAP_PRIVATE mapping"); - - tst_resm (memcmp (buf1, buf2, 20) ? TFAIL : TPASS, - "two private buffers of the same file are identical"); - - buf1[0] = 0x7f; - tst_resm (!memcmp (buf1, buf2, 20) ? TFAIL : TPASS, - "changes are private in MAP_PRIVATE mappings"); - - munmap (buf1, 4096); - munmap (buf2, 4096); - - /* mmap file 1 twice with MAP_SHARED */ - fd1 = open (fnam1, O_RDWR | O_BINARY, 0644); - buf1 = mmap (0, 4096, PROT_READ|PROT_WRITE, MAP_SHARED, fd1, 0); - close (fd1); - - fd2 = open (fnam1, O_RDWR | O_BINARY, 0644); - buf2 = mmap (0, 4096, PROT_READ|PROT_WRITE, MAP_SHARED, fd2, 0); - close (fd2); - - tst_resm (memcmp (buf1, buf2, 20) ? TFAIL : TPASS, - "two shared buffers of the same file are identical"); - - buf1[0] = 0x7f; - tst_resm (memcmp (buf1, buf2, 20) ? TFAIL : TPASS, - "changes are shared between MAP_SHARED mappings of the same file"); - munmap (buf2, 4096); - - fd2 = open (fnam1, O_RDWR | O_BINARY, 0644); - memset (buf3, 0, 20); - read (fd2, buf3, 20); - close (fd2); - - tst_resm (memcmp (buf1, buf3, 20) ? TFAIL : TPASS, - "changes are propagated to the mapped file on MAP_SHARED mapping"); - - munmap (buf1, 4096); - unlink (fnam1); - unlink (fnam2); - tst_exit (); -} - |