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/* Test manipulation of non-blocking flag.
Copyright (C) 2011-2023 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 <https://www.gnu.org/licenses/>. */
/* Written by Eric Blake <ebb9@byu.net>, 2011. */
#include <config.h>
#include "nonblocking.h"
#include <errno.h>
#include <fcntl.h>
#include <sys/socket.h>
#include <unistd.h>
#include "macros.h"
int
main (void)
{
const char *file = "test-nonblock.tmp";
int fd_file;
int fd_pipe[2];
fd_file = creat (file, 0600);
/* Assume std descriptors were provided by invoker. */
ASSERT (STDERR_FILENO < fd_file);
/* Test regular files; setting nonblocking on file is unspecified. */
ASSERT (get_nonblocking_flag (fd_file) == 0);
ASSERT (set_nonblocking_flag (fd_file, false) == 0);
ASSERT (get_nonblocking_flag (fd_file) == 0);
ASSERT (close (fd_file) == 0);
ASSERT (unlink (file) == 0);
/* Test directories; setting nonblocking is unspecified. */
fd_file = open (".", O_RDONLY);
if (STDERR_FILENO < fd_file)
{
/* mingw can't open directories unless fchdir module is active. */
ASSERT (get_nonblocking_flag (fd_file) == 0);
ASSERT (set_nonblocking_flag (fd_file, false) == 0);
ASSERT (get_nonblocking_flag (fd_file) == 0);
ASSERT (close (fd_file) == 0);
}
/* Test pipes. */
ASSERT (pipe (fd_pipe) == 0);
ASSERT (get_nonblocking_flag (fd_pipe[0]) == 0);
ASSERT (get_nonblocking_flag (fd_pipe[1]) == 0);
ASSERT (set_nonblocking_flag (fd_pipe[0], true) == 0);
ASSERT (get_nonblocking_flag (fd_pipe[0]) == 1);
ASSERT (get_nonblocking_flag (fd_pipe[1]) == 0);
ASSERT (set_nonblocking_flag (fd_pipe[1], true) == 0);
ASSERT (set_nonblocking_flag (fd_pipe[0], false) == 0);
ASSERT (get_nonblocking_flag (fd_pipe[0]) == 0);
ASSERT (get_nonblocking_flag (fd_pipe[1]) == 1);
ASSERT (close (fd_pipe[0]) == 0);
ASSERT (close (fd_pipe[1]) == 0);
#if GNULIB_TEST_PIPE2
ASSERT (pipe2 (fd_pipe, O_NONBLOCK) == 0);
ASSERT (get_nonblocking_flag (fd_pipe[0]) == 1);
ASSERT (get_nonblocking_flag (fd_pipe[1]) == 1);
ASSERT (close (fd_pipe[0]) == 0);
ASSERT (close (fd_pipe[1]) == 0);
#endif /* GNULIB_TEST_PIPE2 */
#if GNULIB_TEST_SOCKET
{
/* Test sockets. */
bool sock_works = true;
int fd_sock;
# if defined _WIN32 && ! defined __CYGWIN__
/* For now, we can't get nonblocking status of windows sockets. */
sock_works = false;
# endif
fd_sock = socket (AF_INET, SOCK_STREAM, 0);
ASSERT (get_nonblocking_flag (fd_sock) == (sock_works ? 0 : -1));
ASSERT (set_nonblocking_flag (fd_sock, true) == 0);
ASSERT (get_nonblocking_flag (fd_sock) == (sock_works ? 1 : -1));
ASSERT (set_nonblocking_flag (fd_sock, false) == 0);
ASSERT (get_nonblocking_flag (fd_sock) == (sock_works ? 0 : -1));
ASSERT (close (fd_sock) == 0);
# if SOCK_NONBLOCK
fd_sock = socket (AF_INET, SOCK_STREAM | SOCK_NONBLOCK, 0);
ASSERT (get_nonblocking_flag (fd_sock) == (sock_works ? 1 : -1));
ASSERT (close (fd_sock) == 0);
# endif /* SOCK_NONBLOCK */
}
#endif /* GNULIB_TEST_SOCKET */
/* Test error handling. */
{
errno = 0;
ASSERT (get_nonblocking_flag (-1) == -1);
ASSERT (errno == EBADF);
}
{
errno = 0;
ASSERT (set_nonblocking_flag (-1, false) == -1);
ASSERT (errno == EBADF);
}
{
errno = 0;
ASSERT (set_nonblocking_flag (-1, true) == -1);
ASSERT (errno == EBADF);
}
{
errno = 0;
ASSERT (set_nonblocking_flag (getdtablesize (), false) == -1);
ASSERT (errno == EBADF);
}
return 0;
}
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