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/* Test for ptsname/ptsname_r.
Copyright (C) 2014-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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, see
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#define DEV_TTY "/dev/tty"
#define PTSNAME_EINVAL "./ptsname-einval"
static int
do_single_test (int fd, char *buf, size_t buflen, int expected_err)
{
int ret = ptsname_r (fd, buf, buflen);
int err = errno;
if (expected_err == 0)
{
if (ret != 0)
{
printf ("ptsname_r: expected: return = 0\n");
printf (" got: return = %d, errno = %d (%s)\n",
ret, err, strerror (err));
return 1;
}
}
else
{
if (ret == 0 || errno != expected_err)
{
printf ("ptsname_r: expected: return = %d, errno = %d (%s)\n",
-1, expected_err, strerror (expected_err));
printf (" got: return = %d, errno = %d (%s)\n",
ret, err, strerror (err));
return 1;
}
}
return 0;
}
static int
do_test (void)
{
char buf[512];
int result = 0;
/* Tests with a real PTS master. */
int fd = posix_openpt (O_RDWR);
if (fd != -1)
{
result |= do_single_test (fd, buf, sizeof (buf), 0);
result |= do_single_test (fd, buf, 1, ERANGE);
close (fd);
}
else
printf ("posix_openpt (O_RDWR) failed\nerrno %d (%s)\n",
errno, strerror (errno));
/* Test with a terminal device which is not a PTS master. */
fd = open (DEV_TTY, O_RDONLY);
if (fd != -1)
{
result |= do_single_test (fd, buf, sizeof (buf), ENOTTY);
close (fd);
}
else
printf ("open (\"%s\", O_RDWR) failed\nerrno %d (%s)\n",
DEV_TTY, errno, strerror (errno));
/* Test with a file. */
fd = open (PTSNAME_EINVAL, O_RDWR | O_CREAT, 0600);
if (fd != -1)
{
result |= do_single_test (fd, buf, sizeof (buf), ENOTTY);
close (fd);
unlink (PTSNAME_EINVAL);
}
else
printf ("open (\"%s\", O_RDWR | OCREAT) failed\nerrno %d (%s)\n",
PTSNAME_EINVAL, errno, strerror (errno));
return result;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
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