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/* Test for AIO POSIX compliance.
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Copyright (C) 2001-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <aio.h>
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#include <error.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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/* We might wait for 3 seconds, so increase timeout to 10 seconds. */
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#define TIMEOUT 10
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#define TEST_FUNCTION do_test ()
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static int
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do_test (void)
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{
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int result = 0;
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int piped[2];
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/* Make a pipe that we will never write to, so we can block reading it. */
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if (pipe (piped) < 0)
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{
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perror ("pipe");
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return 1;
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}
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/* Test for aio_cancel() detecting invalid file descriptor. */
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{
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struct aiocb cb;
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int fd = -1;
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cb.aio_fildes = fd;
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cb.aio_offset = 0;
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cb.aio_buf = NULL;
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cb.aio_nbytes = 0;
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cb.aio_reqprio = 0;
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cb.aio_sigevent.sigev_notify = SIGEV_NONE;
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errno = 0;
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/* Case one: invalid fds that match. */
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if (aio_cancel (fd, &cb) != -1 || errno != EBADF)
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{
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if (errno == ENOSYS)
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{
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puts ("no aio support in this configuration");
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return 0;
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}
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puts ("aio_cancel( -1, {-1..} ) did not return -1 or errno != EBADF");
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++result;
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}
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cb.aio_fildes = -2;
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errno = 0;
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/* Case two: invalid fds that do not match; just print warning. */
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if (aio_cancel (fd, &cb) != -1 || errno != EBADF)
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puts ("aio_cancel( -1, {-2..} ) did not return -1 or errno != EBADF");
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}
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/* Test for aio_fsync() detecting bad fd. */
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{
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struct aiocb cb;
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int fd = -1;
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cb.aio_fildes = fd;
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cb.aio_offset = 0;
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cb.aio_buf = NULL;
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cb.aio_nbytes = 0;
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cb.aio_reqprio = 0;
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cb.aio_sigevent.sigev_notify = SIGEV_NONE;
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errno = 0;
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/* Case one: invalid fd. */
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if (aio_fsync (O_SYNC, &cb) != -1 || errno != EBADF)
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{
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puts ("aio_fsync( op, {-1..} ) did not return -1 or errno != EBADF");
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++result;
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}
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}
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/* Test for aio_suspend() suspending even if completed elements in list. */
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{
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#define BYTES 8
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const int ELEMS = 2;
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int i, r, fd;
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static char buff[BYTES];
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char name[] = "/tmp/aio7.XXXXXX";
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struct timespec timeout;
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static struct aiocb cb0, cb1;
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struct aiocb *list[ELEMS];
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fd = mkstemp (name);
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if (fd < 0)
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error (1, errno, "creating temp file");
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if (unlink (name))
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error (1, errno, "unlinking temp file");
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if (write (fd, "01234567", BYTES) != BYTES)
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error (1, errno, "writing to temp file");
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cb0.aio_fildes = fd;
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cb0.aio_offset = 0;
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cb0.aio_buf = buff;
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cb0.aio_nbytes = BYTES;
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cb0.aio_reqprio = 0;
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cb0.aio_sigevent.sigev_notify = SIGEV_NONE;
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r = aio_read (&cb0);
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if (r != 0)
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error (1, errno, "reading from file");
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while (aio_error (&(cb0)) == EINPROGRESS)
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usleep (10);
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for (i = 0; i < BYTES; i++)
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printf ("%c ", buff[i]);
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printf ("\n");
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/* At this point, the first read is completed, so start another one on
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the read half of a pipe on which nothing will be written. */
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cb1.aio_fildes = piped[0];
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cb1.aio_offset = 0;
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cb1.aio_buf = buff;
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cb1.aio_nbytes = BYTES;
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cb1.aio_reqprio = 0;
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cb1.aio_sigevent.sigev_notify = SIGEV_NONE;
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r = aio_read (&cb1);
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if (r != 0)
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error (1, errno, "reading from file");
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/* Now call aio_suspend() with the two reads. It should return
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* immediately according to the POSIX spec.
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*/
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list[0] = &cb;;
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list[1] = &cb;;
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timeout.tv_sec = 3;
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timeout.tv_nsec = 0;
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r = aio_suspend ((const struct aiocb * const *) list, ELEMS, &timeout);
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if (r == -1 && errno == EAGAIN)
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{
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puts ("aio_suspend([done,blocked],2,3) suspended thread");
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++result;
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}
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/* Note that CB1 is still pending, and so cannot be an auto variable.
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Thus we also test that exiting with an outstanding request works. */
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}
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return result;
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}
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#include "../test-skeleton.c"
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