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TP-Link_XR500v_v2-6/m4-1.4.13/tests/test-open.c
2016-11-30 09:03:17 +08:00

48 lines
1.4 KiB
C

/* Test of opening a file descriptor.
Copyright (C) 2007-2008 Free Software Foundation, Inc.
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 3 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, see <http://www.gnu.org/licenses/>. */
/* Written by Bruno Haible <bruno@clisp.org>, 2007. */
#include <config.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#define ASSERT(expr) \
do \
{ \
if (!(expr)) \
{ \
fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
fflush (stderr); \
abort (); \
} \
} \
while (0)
int
main ()
{
ASSERT (open ("nonexist.ent/", O_CREAT, 0600) < 0);
ASSERT (open ("/dev/null/", O_RDONLY) < 0);
ASSERT (open ("/dev/null", O_RDONLY) >= 0);
return 0;
}