Blame gnulib-tests/test-fdopen.c
|
Packit |
33f14e |
/* Test opening a stream with a file descriptor.
|
|
Packit |
33f14e |
Copyright (C) 2011-2017 Free Software Foundation, Inc.
|
|
Packit |
33f14e |
|
|
Packit |
33f14e |
This program is free software: you can redistribute it and/or modify
|
|
Packit |
33f14e |
it under the terms of the GNU General Public License as published by
|
|
Packit |
33f14e |
the Free Software Foundation; either version 3 of the License, or
|
|
Packit |
33f14e |
(at your option) any later version.
|
|
Packit |
33f14e |
|
|
Packit |
33f14e |
This program is distributed in the hope that it will be useful,
|
|
Packit |
33f14e |
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
Packit |
33f14e |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
Packit |
33f14e |
GNU General Public License for more details.
|
|
Packit |
33f14e |
|
|
Packit |
33f14e |
You should have received a copy of the GNU General Public License
|
|
Packit |
33f14e |
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
|
Packit |
33f14e |
|
|
Packit |
33f14e |
#include <config.h>
|
|
Packit |
33f14e |
|
|
Packit |
33f14e |
#include <stdio.h>
|
|
Packit |
33f14e |
|
|
Packit |
33f14e |
#include "signature.h"
|
|
Packit |
33f14e |
SIGNATURE_CHECK (fdopen, FILE *, (int, const char *));
|
|
Packit |
33f14e |
|
|
Packit |
33f14e |
#include <errno.h>
|
|
Packit |
33f14e |
#include <unistd.h>
|
|
Packit |
33f14e |
|
|
Packit |
33f14e |
#include "macros.h"
|
|
Packit |
33f14e |
|
|
Packit |
33f14e |
int
|
|
Packit |
33f14e |
main (void)
|
|
Packit |
33f14e |
{
|
|
Packit |
33f14e |
/* Test behavior on failure. POSIX makes it hard to check for
|
|
Packit |
33f14e |
failure, since the behavior is not well-defined on invalid file
|
|
Packit |
33f14e |
descriptors, so try fdopen 1000 times and if that's not enough to
|
|
Packit |
33f14e |
fail due to EMFILE, so be it. */
|
|
Packit |
33f14e |
|
|
Packit |
33f14e |
int i;
|
|
Packit |
33f14e |
for (i = 0; i < 1000; i++)
|
|
Packit |
33f14e |
{
|
|
Packit |
33f14e |
errno = 0;
|
|
Packit |
33f14e |
if (! fdopen (STDOUT_FILENO, "w"))
|
|
Packit |
33f14e |
{
|
|
Packit |
33f14e |
ASSERT (errno != 0);
|
|
Packit |
33f14e |
break;
|
|
Packit |
33f14e |
}
|
|
Packit |
33f14e |
}
|
|
Packit |
33f14e |
|
|
Packit |
33f14e |
return 0;
|
|
Packit |
33f14e |
}
|