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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 connecting to a TCP port. */
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <libnbd.h>
#include "pick-a-port.h"
#define PIDFILE "connect-tcp.pid"
int
main (int argc, char *argv[])
{
struct nbd_handle *nbd;
int port = pick_a_port ();
char port_str[16];
pid_t pid;
size_t i;
char *actual_uri, *expected_uri;
unlink (PIDFILE);
snprintf (port_str, sizeof port_str, "%d", port);
pid = fork ();
if (pid == -1) {
perror ("fork");
exit (EXIT_FAILURE);
}
if (pid == 0) {
execlp (NBDKIT,
"nbdkit", "-f", "-p", port_str, "-P", PIDFILE,
"--exit-with-parent", "null", NULL);
perror ("nbdkit");
_exit (EXIT_FAILURE);
}
/* Wait for nbdkit to start listening. */
for (i = 0; i < 60; ++i) {
if (access (PIDFILE, F_OK) == 0)
break;
sleep (1);
}
unlink (PIDFILE);
nbd = nbd_create ();
if (nbd == NULL) {
fprintf (stderr, "%s\n", nbd_get_error ());
exit (EXIT_FAILURE);
}
if (nbd_connect_tcp (nbd, "localhost", port_str) == -1) {
fprintf (stderr, "%s\n", nbd_get_error ());
exit (EXIT_FAILURE);
}
if (nbd_supports_uri (nbd) == 1) {
/* libnbd should be able to construct a URI for this connection. */
if (asprintf (&expected_uri, "nbd://localhost:%s/", port_str) == -1) {
perror ("asprintf");
exit (EXIT_FAILURE);
}
actual_uri = nbd_get_uri (nbd);
if (actual_uri == NULL) {
fprintf (stderr, "%s\n", nbd_get_error ());
exit (EXIT_FAILURE);
}
if (strcmp (actual_uri, expected_uri) != 0) {
fprintf (stderr, "%s: actual URI %s != expected URI %s\n",
argv[0], actual_uri, expected_uri);
exit (EXIT_FAILURE);
}
free (actual_uri);
free (expected_uri);
}
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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