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/* Test of ptsname_r(3).
Copyright (C) 2010-2012 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/>. */
#include <config.h>
#include <stdlib.h>
#include "signature.h"
SIGNATURE_CHECK (ptsname_r, int, (int, char *, size_t));
#include <errno.h>
#include <fcntl.h>
#include <signal.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
#include "same-inode.h"
#include "macros.h"
/* Compare two slave names.
On some systems, there are hard links in the /dev/ directory.
For example, on OSF/1 5.1,
/dev/ttyp0 == /dev/pts/0
/dev/ttyp9 == /dev/pts/9
/dev/ttypa == /dev/pts/10
/dev/ttype == /dev/pts/14
*/
static int
same_slave (const char *slave_name1, const char *slave_name2)
{
struct stat statbuf1;
struct stat statbuf2;
return (strcmp (slave_name1, slave_name2) == 0
|| (stat (slave_name1, &statbuf1) >= 0
&& stat (slave_name2, &statbuf2) >= 0
&& SAME_INODE (statbuf1, statbuf2)));
}
static char *
null_ptr (void)
{
return NULL;
}
static void
test_errors (int fd, const char *slave)
{
char buffer[256];
size_t len;
size_t buflen_max;
size_t buflen;
int result;
len = strlen (slave);
buflen_max = len + 5;
if (buflen_max > sizeof buffer)
buflen_max = sizeof buffer;
for (buflen = 0; buflen <= buflen_max; buflen++)
{
memset (buffer, 'X', sizeof buffer);
errno = 0;
result = ptsname_r (fd, buffer, buflen);
if (buflen > len)
{
ASSERT (result == 0);
ASSERT (buffer[0] == '/');
}
else
{
ASSERT (result != 0);
ASSERT (result == errno);
ASSERT (errno == ERANGE);
ASSERT (buffer[0] == 'X');
}
}
errno = 0;
result = ptsname_r (fd, null_ptr (), 0);
ASSERT (result != 0);
ASSERT (result == errno);
ASSERT (errno == EINVAL);
}
int
main (void)
{
#if HAVE_DECL_ALARM
/* Declare failure if test takes too long, by using default abort
caused by SIGALRM. */
signal (SIGALRM, SIG_DFL);
alarm (5);
#endif
{
char buffer[256];
int result;
errno = 0;
result = ptsname_r (-1, buffer, sizeof buffer);
ASSERT (result != 0);
ASSERT (result == errno);
ASSERT (errno == EBADF || errno == ENOTTY);
}
{
int fd;
char buffer[256];
int result;
/* Open the controlling tty of the current process. */
fd = open ("/dev/tty", O_RDONLY);
if (fd < 0)
{
fprintf (stderr, "Skipping test: cannot open controlling tty\n");
return 77;
}
result = ptsname_r (fd, buffer, sizeof buffer);
/* The result is usually NULL, because /dev/tty is a slave, not a
master. */
if (result == 0)
{
ASSERT (memcmp (buffer, "/dev/", 5) == 0);
}
close (fd);
}
#if defined __sun
/* Solaris has BSD-style /dev/pty[p-r][0-9a-f] files, but the function
ptsname() does not work on them. */
{
int fd;
char buffer[256];
int result;
/* Open the controlling tty of the current process. */
fd = open ("/dev/ptmx", O_RDWR | O_NOCTTY);
if (fd < 0)
{
fprintf (stderr, "Skipping test: cannot open pseudo-terminal\n");
return 77;
}
result = ptsname_r (fd, buffer, sizeof buffer);
ASSERT (result == 0);
ASSERT (memcmp (buffer, "/dev/pts/", 9) == 0);
test_errors (fd, buffer);
close (fd);
}
#else
/* Try various master names of MacOS X: /dev/pty[p-w][0-9a-f] */
{
int char1;
int char2;
for (char1 = 'p'; char1 <= 'w'; char1++)
for (char2 = '0'; char2 <= 'f'; (char2 == '9' ? char2 = 'a' : char2++))
{
char master_name[32];
int fd;
sprintf (master_name, "/dev/pty%c%c", char1, char2);
fd = open (master_name, O_RDONLY);
if (fd >= 0)
{
char buffer[256];
int result;
char slave_name[32];
result = ptsname_r (fd, buffer, sizeof buffer);
ASSERT (result == 0);
sprintf (slave_name, "/dev/tty%c%c", char1, char2);
ASSERT (same_slave (buffer, slave_name));
test_errors (fd, buffer);
close (fd);
}
}
}
/* Try various master names of *BSD: /dev/pty[p-sP-S][0-9a-v] */
{
int upper;
int char1;
int char2;
for (upper = 0; upper <= 1; upper++)
for (char1 = (upper ? 'P' : 'p'); char1 <= (upper ? 'S' : 's'); char1++)
for (char2 = '0'; char2 <= 'v'; (char2 == '9' ? char2 = 'a' : char2++))
{
char master_name[32];
int fd;
sprintf (master_name, "/dev/pty%c%c", char1, char2);
fd = open (master_name, O_RDONLY);
if (fd >= 0)
{
char buffer[256];
int result;
char slave_name[32];
result = ptsname_r (fd, buffer, sizeof buffer);
ASSERT (result == 0);
sprintf (slave_name, "/dev/tty%c%c", char1, char2);
ASSERT (same_slave (buffer, slave_name));
test_errors (fd, buffer);
close (fd);
}
}
}
#endif
return 0;
}
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