/* Test for AIO POSIX compliance. Copyright (C) 2001,02, 03 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, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ #include <aio.h> #include <error.h> #include <errno.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> /* We might wait for 3 seconds, so increase timeout to 10 seconds. */ #define TIMEOUT 10 #define TEST_FUNCTION do_test () static int do_test (void) { int result = 0; int piped[2]; /* Make a pipe that we will never write to, so we can block reading it. */ if (pipe (piped) < 0) { perror ("pipe"); return 1; } /* Test for aio_cancel() detecting invalid file descriptor. */ { struct aiocb cb; int fd = -1; cb.aio_fildes = fd; cb.aio_offset = 0; cb.aio_buf = NULL; cb.aio_nbytes = 0; cb.aio_reqprio = 0; cb.aio_sigevent.sigev_notify = SIGEV_NONE; errno = 0; /* Case one: invalid fds that match. */ if (aio_cancel (fd, &cb) != -1 || errno != EBADF) { if (errno == ENOSYS) { puts ("no aio support in this configuration"); return 0; } puts ("aio_cancel( -1, {-1..} ) did not return -1 or errno != EBADF"); ++result; } cb.aio_fildes = -2; errno = 0; /* Case two: invalid fds that do not match; just print warning. */ if (aio_cancel (fd, &cb) != -1 || errno != EBADF) puts ("aio_cancel( -1, {-2..} ) did not return -1 or errno != EBADF"); } /* Test for aio_fsync() detecting bad fd, and fd not open for writing. */ { struct aiocb cb; int fd = -1; cb.aio_fildes = fd; cb.aio_offset = 0; cb.aio_buf = NULL; cb.aio_nbytes = 0; cb.aio_reqprio = 0; cb.aio_sigevent.sigev_notify = SIGEV_NONE; errno = 0; /* Case one: invalid fd. */ if (aio_fsync (O_SYNC, &cb) != -1 || errno != EBADF) { puts ("aio_fsync( op, {-1..} ) did not return -1 or errno != EBADF"); ++result; } if ((fd = open ("/dev/null", O_RDONLY)) < 0) error (1, errno, "opening /dev/null"); cb.aio_fildes = fd; errno = 0; /* Case two: valid fd but open for read only. */ if (aio_fsync (O_SYNC, &cb) != -1 || errno != EBADF) { puts ("aio_fsync( op, {RO..} ) did not return -1 or errno != EBADF"); ++result; } close (fd); } /* Test for aio_suspend() suspending even if completed elements in list. */ { #define BYTES 8 const int ELEMS = 2; int i, r, fd; static char buff[BYTES]; char name[] = "/tmp/aio7.XXXXXX"; struct timespec timeout; static struct aiocb cb0, cb1; struct aiocb *list[ELEMS]; fd = mkstemp (name); if (fd < 0) error (1, errno, "creating temp file"); if (unlink (name)) error (1, errno, "unlinking temp file"); if (write (fd, "01234567", BYTES) != BYTES) error (1, errno, "writing to temp file"); cb0.aio_fildes = fd; cb0.aio_offset = 0; cb0.aio_buf = buff; cb0.aio_nbytes = BYTES; cb0.aio_reqprio = 0; cb0.aio_sigevent.sigev_notify = SIGEV_NONE; r = aio_read (&cb0); if (r != 0) error (1, errno, "reading from file"); while (aio_error (&(cb0)) == EINPROGRESS) usleep (10); for (i = 0; i < BYTES; i++) printf ("%c ", buff[i]); printf ("\n"); /* At this point, the first read is completed, so start another one on the read half of a pipe on which nothing will be written. */ cb1.aio_fildes = piped[0]; cb1.aio_offset = 0; cb1.aio_buf = buff; cb1.aio_nbytes = BYTES; cb1.aio_reqprio = 0; cb1.aio_sigevent.sigev_notify = SIGEV_NONE; r = aio_read (&cb1); if (r != 0) error (1, errno, "reading from file"); /* Now call aio_suspend() with the two reads. It should return * immediately according to the POSIX spec. */ list[0] = &cb0; list[1] = &cb1; timeout.tv_sec = 3; timeout.tv_nsec = 0; r = aio_suspend ((const struct aiocb * const *) list, ELEMS, &timeout); if (r == -1 && errno == EAGAIN) { puts ("aio_suspend([done,blocked],2,3) suspended thread"); ++result; } /* Note that CB1 is still pending, and so cannot be an auto variable. Thus we also test that exiting with an outstanding request works. */ } return result; } #include "../test-skeleton.c"