/* Tests for AIO in librt.
Copyright (C) 1998-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
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
<http://www.gnu.org/licenses/>. */
#include <aio.h>
#include <errno.h>
#include <error.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
/* Prototype for our test function. */
extern void do_prepare (int argc, char *argv[]);
extern int do_test (int argc, char *argv[]);
/* We have a preparation function. */
#define PREPARE do_prepare
/* We might need a bit longer timeout. */
#define TIMEOUT 20 /* sec */
/* This defines the `main' function and some more. */
#include <test-skeleton.c>
/* These are for the temporary file we generate. */
char *name;
int fd;
void
do_prepare (int argc, char *argv[])
{
size_t name_len;
name_len = strlen (test_dir);
name = xmalloc (name_len + sizeof ("/aioXXXXXX"));
mempcpy (mempcpy (name, test_dir, name_len),
"/aioXXXXXX", sizeof ("/aioXXXXXX"));
/* Open our test file. */
fd = mkstemp (name);
if (fd == -1)
error (EXIT_FAILURE, errno, "cannot open test file `%s'", name);
add_temp_file (name);
}
static int
test_file (const void *buf, size_t size, int fd, const char *msg)
{
struct stat st;
char tmp[size];
errno = 0;
if (fstat (fd, &st) < 0)
{
error (0, errno, "%s: failed stat", msg);
return 1;
}
if (st.st_size != (off_t) size)
{
error (0, errno, "%s: wrong size: %lu, should be %lu",
msg, (unsigned long int) st.st_size, (unsigned long int) size);
return 1;
}
if (pread (fd, tmp, size, 0) != (ssize_t) size)
{
error (0, errno, "%s: failed pread", msg);
return 1;
}
if (memcmp (buf, tmp, size) != 0)
{
error (0, errno, "%s: failed comparison", msg);
return 1;
}
printf ("%s test ok\n", msg);
return 0;
}
static int
do_wait (struct aiocb **cbp, size_t nent, int allowed_err)
{
int go_on;
size_t cnt;
int result = 0;
do
{
aio_suspend ((const struct aiocb *const *) cbp, nent, NULL);
go_on = 0;
for (cnt = 0; cnt < nent; ++cnt)
if (cbp[cnt] != NULL)
{
if (aio_error (cbp[cnt]) == EINPROGRESS)
go_on = 1;
else
{
if (aio_return (cbp[cnt]) == -1
&& (allowed_err == 0
|| aio_error (cbp[cnt]) != allowed_err))
{
error (0, aio_error (cbp[cnt]), "Operation failed\n");
result = 1;
}
cbp[cnt] = NULL;
}
}
}
while (go_on);
return result;
}
int
do_test (int argc, char *argv[])
{
struct aiocb cbs[10];
struct aiocb cbs_fsync;
struct aiocb *cbp[10];
struct aiocb *cbp_fsync[1];
char buf[1000];
size_t cnt;
int result = 0;
/* Preparation. */
for (cnt = 0; cnt < 10; ++cnt)
{
cbs[cnt].aio_fildes = fd;
cbs[cnt].aio_reqprio = 0;
cbs[cnt].aio_buf = memset (&buf[cnt * 100], '0' + cnt, 100);
cbs[cnt].aio_nbytes = 100;
cbs[cnt].aio_offset = cnt * 100;
cbs[cnt].aio_sigevent.sigev_notify = SIGEV_NONE;
cbp[cnt] = &cbs[cnt];
}
/* First a simple test. */
for (cnt = 10; cnt > 0; )
if (aio_write (cbp[--cnt]) < 0 && errno == ENOSYS)
{
error (0, 0, "no aio support in this configuration");
return 0;
}
/* Wait 'til the results are there. */
result |= do_wait (cbp, 10, 0);
/* Test this. */
result |= test_file (buf, sizeof (buf), fd, "aio_write");
/* Read now as we've written it. */
memset (buf, '\0', sizeof (buf));
/* Issue the commands. */
for (cnt = 10; cnt > 0; )
{
--cnt;
cbp[cnt] = &cbs[cnt];
aio_read (cbp[cnt]);
}
/* Wait 'til the results are there. */
result |= do_wait (cbp, 10, 0);
/* Test this. */
for (cnt = 0; cnt < 1000; ++cnt)
if (buf[cnt] != '0' + (cnt / 100))
{
result = 1;
error (0, 0, "comparison failed for aio_read test");
break;
}
if (cnt == 1000)
puts ("aio_read test ok");
/* Remove the test file contents. */
if (ftruncate (fd, 0) < 0)
{
error (0, errno, "ftruncate failed\n");
result = 1;
}
/* Test lio_listio. */
for (cnt = 0; cnt < 10; ++cnt)
{
cbs[cnt].aio_lio_opcode = LIO_WRITE;
cbp[cnt] = &cbs[cnt];
}
/* Issue the command. */
lio_listio (LIO_WAIT, cbp, 10, NULL);
/* ...and immediately test it since we started it in wait mode. */
result |= test_file (buf, sizeof (buf), fd, "lio_listio (write)");
/* Test aio_fsync. */
cbs_fsync.aio_fildes = fd;
cbs_fsync.aio_sigevent.sigev_notify = SIGEV_NONE;
cbp_fsync[0] = &cbs_fsync;
/* Remove the test file contents first. */
if (ftruncate (fd, 0) < 0)
{
error (0, errno, "ftruncate failed\n");
result = 1;
}
/* Write again. */
for (cnt = 10; cnt > 0; )
aio_write (cbp[--cnt]);
if (aio_fsync (O_SYNC, &cbs_fsync) < 0)
{
error (0, errno, "aio_fsync failed\n");
result = 1;
}
result |= do_wait (cbp_fsync, 1, 0);
/* ...and test since all data should be on disk now. */
result |= test_file (buf, sizeof (buf), fd, "aio_fsync (aio_write)");
/* Test aio_cancel. */
/* Remove the test file contents first. */
if (ftruncate (fd, 0) < 0)
{
error (0, errno, "ftruncate failed\n");
result = 1;
}
/* Write again. */
for (cnt = 10; cnt > 0; )
aio_write (cbp[--cnt]);
/* Cancel all requests. */
if (aio_cancel (fd, NULL) == -1)
printf ("aio_cancel (fd, NULL) cannot cancel anything\n");
result |= do_wait (cbp, 10, ECANCELED);
/* Another test for aio_cancel. */
/* Remove the test file contents first. */
if (ftruncate (fd, 0) < 0)
{
error (0, errno, "ftruncate failed\n");
result = 1;
}
/* Write again. */
for (cnt = 10; cnt > 0; )
{
--cnt;
cbp[cnt] = &cbs[cnt];
aio_write (cbp[cnt]);
}
puts ("finished3");
/* Cancel all requests. */
for (cnt = 10; cnt > 0; )
if (aio_cancel (fd, cbp[--cnt]) == -1)
/* This is not an error. The request can simply be finished. */
printf ("aio_cancel (fd, cbp[%Zd]) cannot be canceled\n", cnt);
puts ("finished2");
result |= do_wait (cbp, 10, ECANCELED);
puts ("finished");
return result;
}