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/* nbdkit
* Copyright Red Hat
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of Red Hat nor the names of its contributors may be
* used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <inttypes.h>
#include <errno.h>
#include <libnbd.h>
#include "array-size.h"
#include "requires.h"
/* This test checks the conversion from OCaml Unix.error to errno (in
* the plugin) to NBD_E* (over the wire) and back to errno (in
* libnbd).
*
* Reading at various sector offsets in the associated plugin
* (test_ocaml_errorcodes_plugin.ml) produces predictable error codes.
*/
static struct { uint64_t offset; int expected_errno; } tests[] = {
{ 0, 0 },
{ 1*512, EPERM },
{ 2*512, EIO },
{ 3*512, ENOMEM },
{ 4*512, ESHUTDOWN },
{ 5*512, EINVAL },
{ 6*512, 0 },
};
int
main (int argc, char *argv[])
{
struct nbd_handle *nbd;
char buf[512];
size_t i;
#ifdef __APPLE__
skip_because ("loading the OCaml plugin fails on macOS");
#endif
nbd = nbd_create ();
if (nbd == NULL) {
fprintf (stderr, "%s\n", nbd_get_error ());
exit (EXIT_FAILURE);
}
if (nbd_connect_command (nbd,
(char *[]) {
"nbdkit", "-s", "--exit-with-parent", "-v",
"./test-ocaml-errorcodes-plugin.so",
NULL }) == -1) {
fprintf (stderr, "%s\n", nbd_get_error ());
exit (EXIT_FAILURE);
}
if (nbd_pread (nbd, buf, 512, 0, 0) == -1) {
fprintf (stderr, "%s: FAIL: did not expect reading sector 0 to fail\n",
argv[0]);
exit (EXIT_FAILURE);
}
for (i = 0; i < ARRAY_SIZE(tests); ++i) {
int r;
r = nbd_pread (nbd, buf, 512, tests[i].offset, 0);
if (tests[i].expected_errno != 0) {
int actual_errno;
if (r != -1) {
fprintf (stderr,
"%s: FAIL: reading sector %" PRIu64 "should have failed\n",
argv[0], tests[i].offset / 512);
exit (EXIT_FAILURE);
}
actual_errno = nbd_get_errno ();
printf ("actual_errno = %d (\"%s\")\n", actual_errno, nbd_get_error ());
fflush (stdout);
if (actual_errno != tests[i].expected_errno) {
fprintf (stderr, "%s: FAIL: actual errno = %d expected errno = %d\n",
argv[0], actual_errno, tests[i].expected_errno);
exit (EXIT_FAILURE);
}
}
else { /* tests[i].expected_errno == 0 */
if (r != 0) {
fprintf (stderr,
"%s: FAIL: reading sector %" PRIu64 "should have succeeded\n",
argv[0], tests[i].offset / 512);
exit (EXIT_FAILURE);
}
}
}
nbd_close (nbd);
exit (EXIT_SUCCESS);
}
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