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/* NBD client library in userspace
* Copyright Red Hat
*
* This 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 of the License, or (at your option) any later version.
*
* This 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/* Test shutdown in relation to opt mode.
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include <errno.h>
#include <signal.h>
#include <libnbd.h>
static const char *progname;
int
main (int argc, char *argv[])
{
struct nbd_handle *nbd;
const char *cmd_old[] = { NBDKIT, "--oldstyle", "-s", "--exit-with-parent",
"memory", "size=2m", NULL };
const char *cmd_new[] = { NBDKIT, "-s", "--exit-with-parent",
"memory", "size=2m", NULL };
progname = argv[0];
/* Part 1: Request opt mode. With oldstyle, it is not possible. */
nbd = nbd_create ();
if (nbd == NULL) {
fprintf (stderr, "%s: %s\n", progname, nbd_get_error ());
exit (EXIT_FAILURE);
}
if (nbd_set_opt_mode (nbd, true) == -1) {
fprintf (stderr, "%s: %s\n", progname, nbd_get_error ());
exit (EXIT_FAILURE);
}
if (nbd_connect_command (nbd, (char **)cmd_old) == -1) {
fprintf (stderr, "%s: %s\n", progname, nbd_get_error ());
exit (EXIT_FAILURE);
}
if (nbd_aio_is_ready (nbd) != 1) {
fprintf (stderr, "%s: unexpected state\n", progname);
exit (EXIT_FAILURE);
}
/* opt_abort fails, because we aren't in option negotiation. */
if (nbd_opt_abort (nbd) != -1) {
fprintf (stderr, "%s: unexpected success of nbd_opt_abort\n", progname);
exit (EXIT_FAILURE);
}
if (nbd_get_errno () != EINVAL) {
fprintf (stderr, "%s: test failed: unexpected errno: %s\n",
progname, strerror (nbd_get_errno ()));
exit (EXIT_FAILURE);
}
/* Shutdown will succeed, since opt mode was not possible. */
if (nbd_shutdown (nbd, 0) == -1) {
fprintf (stderr, "%s: %s\n", progname, nbd_get_error ());
exit (EXIT_FAILURE);
}
nbd_close (nbd);
/* Part 2: Request opt mode. With newstyle, it succeeds. */
nbd = nbd_create ();
if (nbd == NULL) {
fprintf (stderr, "%s: %s\n", progname, nbd_get_error ());
exit (EXIT_FAILURE);
}
if (nbd_set_opt_mode (nbd, true) == -1) {
fprintf (stderr, "%s: %s\n", progname, nbd_get_error ());
exit (EXIT_FAILURE);
}
if (nbd_connect_command (nbd, (char **)cmd_new) == -1) {
fprintf (stderr, "%s: %s\n", progname, nbd_get_error ());
exit (EXIT_FAILURE);
}
if (nbd_aio_is_negotiating (nbd) != 1) {
fprintf (stderr, "%s: unexpected state\n", progname);
exit (EXIT_FAILURE);
}
/* Disconnect fails, because we are in wrong mode. */
if (nbd_aio_disconnect (nbd, 0) != -1) {
fprintf (stderr,
"%s: test failed: nbd_aio_disconnect unexpectedly worked\n",
progname);
exit (EXIT_FAILURE);
}
if (nbd_get_errno () != EINVAL) {
fprintf (stderr, "%s: test failed: unexpected errno: %s\n",
progname, strerror (nbd_get_errno ()));
exit (EXIT_FAILURE);
}
/* But we can manually call nbd_opt_abort, which closes gracefully. */
if (nbd_opt_abort (nbd) == -1) {
fprintf (stderr, "%s: %s\n", progname, nbd_get_error ());
exit (EXIT_FAILURE);
}
if (nbd_aio_is_closed (nbd) != 1) {
fprintf (stderr, "%s: unexpected state\n", progname);
exit (EXIT_FAILURE);
}
nbd_close (nbd);
/* Part 3: Shutdown works by default, regardless of opt mode */
nbd = nbd_create ();
if (nbd == NULL) {
fprintf (stderr, "%s: %s\n", progname, nbd_get_error ());
exit (EXIT_FAILURE);
}
if (nbd_set_opt_mode (nbd, true) == -1) {
fprintf (stderr, "%s: %s\n", progname, nbd_get_error ());
exit (EXIT_FAILURE);
}
if (nbd_connect_command (nbd, (char **)cmd_new) == -1) {
fprintf (stderr, "%s: %s\n", progname, nbd_get_error ());
exit (EXIT_FAILURE);
}
if (nbd_aio_is_negotiating (nbd) != 1) {
fprintf (stderr, "%s: unexpected state\n", progname);
exit (EXIT_FAILURE);
}
/* Shutdown succeeds; it does more than just aio_disconnect. */
if (nbd_shutdown (nbd, 0) == -1) {
fprintf (stderr, "%s: %s\n", progname, nbd_get_error ());
exit (EXIT_FAILURE);
}
nbd_close (nbd);
exit (EXIT_SUCCESS);
}
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