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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
*/
/* Simple test which connects to nbdkit and reads the size.
* Essentially testing the newstyle handshake.
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <inttypes.h>
#include <string.h>
#include <libnbd.h>
#define SIZE 123456789
#define XSTR(s) #s
#define STR(s) XSTR (s)
int
main (int argc, char *argv[])
{
struct nbd_handle *nbd;
int64_t r;
/* -n forces newstyle even if someone is still using nbdkit < 1.3 */
char *args[] = { NBDKIT, "-s", "--exit-with-parent", "-n", "-v",
"null", "size=" STR (SIZE), NULL };
const char *s;
nbd = nbd_create ();
if (nbd == NULL) {
fprintf (stderr, "%s\n", nbd_get_error ());
exit (EXIT_FAILURE);
}
if (nbd_connect_command (nbd, args) == -1) {
fprintf (stderr, "%s\n", nbd_get_error ());
exit (EXIT_FAILURE);
}
/* Even ancient versions of nbdkit only supported newstyle-fixed. */
s = nbd_get_protocol (nbd);
if (strcmp (s, "newstyle-fixed") != 0) {
fprintf (stderr,
"incorrect protocol \"%s\", expected \"newstyle-fixed\"\n", s);
exit (EXIT_FAILURE);
}
if ((r = nbd_get_size (nbd)) == -1) {
fprintf (stderr, "%s\n", nbd_get_error ());
exit (EXIT_FAILURE);
}
if (r != SIZE) {
fprintf (stderr, "%s: test failed: incorrect size, "
"actual %" PRIi64 ", expected %d",
argv[0], r, SIZE);
exit (EXIT_FAILURE);
}
if (nbd_shutdown (nbd, 0) == -1) {
fprintf (stderr, "%s\n", nbd_get_error ());
exit (EXIT_FAILURE);
}
nbd_close (nbd);
exit (EXIT_SUCCESS);
}
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