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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.
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Copyright (C) 2002 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Jakub Jelinek <jakub@redhat.com>, 2002.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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int
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main (void)
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{
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char name[] = "/tmp/tst-freopen.XXXXXX";
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const char * const test = "Let's test freopen.\n";
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char temp[strlen (test) + 1];
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int fd = mkstemp (name);
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FILE *f;
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if (fd == -1)
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{
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printf ("%Zd: cannot open temporary file: %m\n", __LINE__);
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exit (1);
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}
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f = fdopen (fd, "w");
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if (f == NULL)
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{
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printf ("%Zd: cannot fdopen temporary file: %m\n", __LINE__);
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exit (1);
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}
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fputs (test, f);
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fclose (f);
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f = fopen (name, "r");
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if (f == NULL)
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{
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printf ("%Zd: cannot fopen temporary file: %m\n", __LINE__);
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exit (1);
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}
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if (fread (temp, 1, strlen (test), f) != strlen (test))
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{
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printf ("%Zd: couldn't read the file back: %m\n", __LINE__);
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exit (1);
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}
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temp [strlen (test)] = '\0';
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if (strcmp (test, temp))
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{
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printf ("%Zd: read different string than was written:\n%s%s",
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__LINE__, test, temp);
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exit (1);
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}
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f = freopen (name, "r+", f);
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if (f == NULL)
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{
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printf ("%Zd: cannot freopen temporary file: %m\n", __LINE__);
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exit (1);
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}
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if (fseek (f, 0, SEEK_SET) != 0)
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{
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printf ("%Zd: couldn't fseek to start: %m\n", __LINE__);
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exit (1);
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}
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if (fread (temp, 1, strlen (test), f) != strlen (test))
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{
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printf ("%Zd: couldn't read the file back: %m\n", __LINE__);
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exit (1);
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}
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temp [strlen (test)] = '\0';
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if (strcmp (test, temp))
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{
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printf ("%Zd: read different string than was written:\n%s%s",
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__LINE__, test, temp);
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exit (1);
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}
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fclose (f);
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unlink (name);
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exit (0);
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}
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