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/* Test of strerror_r() function.
Copyright (C) 2007-2011 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, 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
#include <config.h>
#include <string.h>
#include "signature.h"
SIGNATURE_CHECK (strerror_r, int, (int, char *, size_t));
#include <errno.h>
#include "macros.h"
int
main (void)
{
char buf[100];
int ret;
/* Test results with valid errnum and enough room. */
errno = 0;
buf[0] = '\0';
ASSERT (strerror_r (EACCES, buf, sizeof (buf)) == 0);
ASSERT (buf[0] != '\0');
ASSERT (errno == 0);
errno = 0;
buf[0] = '\0';
ASSERT (strerror_r (ETIMEDOUT, buf, sizeof (buf)) == 0);
ASSERT (buf[0] != '\0');
ASSERT (errno == 0);
errno = 0;
buf[0] = '\0';
ASSERT (strerror_r (EOVERFLOW, buf, sizeof (buf)) == 0);
ASSERT (buf[0] != '\0');
ASSERT (errno == 0);
/* POSIX requires strerror (0) to succeed. Reject use of "Unknown
error", but allow "Success", "No error", or even Solaris' "Error
0" which are distinct patterns from true out-of-range strings.
http://austingroupbugs.net/view.php?id=382 */
errno = 0;
buf[0] = '\0';
ret = strerror_r (0, buf, sizeof (buf));
ASSERT (ret == 0);
ASSERT (buf[0]);
ASSERT (errno == 0);
ASSERT (strstr (buf, "nknown") == NULL);
/* Test results with out-of-range errnum and enough room. */
errno = 0;
buf[0] = '^';
ret = strerror_r (-3, buf, sizeof (buf));
ASSERT (ret == 0 || ret == EINVAL);
if (ret == 0)
ASSERT (buf[0] != '^');
ASSERT (errno == 0);
/* Test results with a too small buffer. */
ASSERT (strerror_r (EACCES, buf, sizeof (buf)) == 0);
{
size_t len = strlen (buf);
size_t i;
for (i = 0; i <= len; i++)
{
strcpy (buf, "BADFACE");
errno = 0;
ret = strerror_r (EACCES, buf, i);
ASSERT (errno == 0);
if (ret == 0)
{
/* Truncated result. POSIX allows this, and it actually
happens on AIX 6.1 and Cygwin. */
ASSERT ((strcmp (buf, "BADFACE") == 0) == (i == 0));
}
else
{
/* Failure. */
ASSERT (ret == ERANGE);
/* buf is clobbered nevertheless, on FreeBSD and MacOS X. */
}
}
strcpy (buf, "BADFACE");
errno = 0;
ret = strerror_r (EACCES, buf, len + 1);
ASSERT (ret == 0);
ASSERT (errno == 0);
}
return 0;
}
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