mirror of
git://sourceware.org/git/glibc.git
synced 2024-11-21 01:12:26 +08:00
78ce5a3bbb
2002-07-24 Ulrich Drepper <drepper@redhat.com> * libio/fileops.c (_IO_file_seekoff_mmap): Do use fp->_offset to compute current position. * stdio-common/tst-fseek.c (main): Improve error messages. * libio/tst-freopen.c (main): Remove unused variable. * libio/fileops.c (_IO_file_seekoff_mmap): Set fp->_offset after succesful seek call. Simply error checking. 2002-07-25 Jakub Jelinek <jakub@redhat.com> * config.h.in: Use __ASSEMBLER__ test macro not ASSEMBLER. * sysdeps/ia64/fpu/libm_support.h: Likewise.
104 lines
2.6 KiB
C
104 lines
2.6 KiB
C
/* Test freopen with mmap stdio.
|
|
Copyright (C) 2002 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Jakub Jelinek <jakub@redhat.com>, 2002.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
int
|
|
main (void)
|
|
{
|
|
char name[] = "/tmp/tst-freopen.XXXXXX";
|
|
const char * const test = "Let's test freopen.\n";
|
|
char temp[strlen (test) + 1];
|
|
int fd = mkstemp (name);
|
|
FILE *f;
|
|
|
|
if (fd == -1)
|
|
{
|
|
printf ("%Zd: cannot open temporary file: %m\n", __LINE__);
|
|
exit (1);
|
|
}
|
|
|
|
f = fdopen (fd, "w");
|
|
if (f == NULL)
|
|
{
|
|
printf ("%Zd: cannot fdopen temporary file: %m\n", __LINE__);
|
|
exit (1);
|
|
}
|
|
|
|
fputs (test, f);
|
|
fclose (f);
|
|
|
|
f = fopen (name, "r");
|
|
if (f == NULL)
|
|
{
|
|
printf ("%Zd: cannot fopen temporary file: %m\n", __LINE__);
|
|
exit (1);
|
|
}
|
|
|
|
if (fread (temp, 1, strlen (test), f) != strlen (test))
|
|
{
|
|
printf ("%Zd: couldn't read the file back: %m\n", __LINE__);
|
|
exit (1);
|
|
}
|
|
temp [strlen (test)] = '\0';
|
|
|
|
if (strcmp (test, temp))
|
|
{
|
|
printf ("%Zd: read different string than was written:\n%s%s",
|
|
__LINE__, test, temp);
|
|
exit (1);
|
|
}
|
|
|
|
f = freopen (name, "r+", f);
|
|
if (f == NULL)
|
|
{
|
|
printf ("%Zd: cannot freopen temporary file: %m\n", __LINE__);
|
|
exit (1);
|
|
}
|
|
|
|
if (fseek (f, 0, SEEK_SET) != 0)
|
|
{
|
|
printf ("%Zd: couldn't fseek to start: %m\n", __LINE__);
|
|
exit (1);
|
|
}
|
|
|
|
if (fread (temp, 1, strlen (test), f) != strlen (test))
|
|
{
|
|
printf ("%Zd: couldn't read the file back: %m\n", __LINE__);
|
|
exit (1);
|
|
}
|
|
temp [strlen (test)] = '\0';
|
|
|
|
if (strcmp (test, temp))
|
|
{
|
|
printf ("%Zd: read different string than was written:\n%s%s",
|
|
__LINE__, test, temp);
|
|
exit (1);
|
|
}
|
|
|
|
fclose (f);
|
|
|
|
unlink (name);
|
|
exit (0);
|
|
}
|