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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 nbd_{set,get}_socket_activation_name API. */
#undef NDEBUG
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <assert.h>
#include <libnbd.h>
#include "requires.h"
#define DEBUG_FILE "socket-activation-name.out"
int
main (int argc, char *argv[])
{
struct nbd_handle *nbd;
char *r;
/* Test that this version of nbdkit supports -D nbdkit.environ=1
* added in nbdkit 1.35.2.
*
* As a side-effect, also checks we have nbdkit, the null plugin and
* a working grep command, all needed below.
*/
requires ("libnbd_sentinel=42 "
NBDKIT " -v -D nbdkit.environ=1 null --run true 2>&1 | "
"grep -sq 'debug.*libnbd_sentinel=42'");
nbd = nbd_create ();
if (nbd == NULL) {
fprintf (stderr, "%s\n", nbd_get_error ());
exit (EXIT_FAILURE);
}
/* Check firstly that it defaults to empty string. */
r = nbd_get_socket_activation_name (nbd);
assert (r != NULL);
assert (strcmp (r, "") == 0);
free (r);
/* Run external nbdkit and check the LISTEN_FDNAMES environment
* variable is set to "unknown". We need to capture the debug
* output of nbdkit, hence the journey through the shell.
*/
unlink (DEBUG_FILE);
char *cmd[] = {
"sh", "-c",
"exec 2> " DEBUG_FILE "\n"
"exec " NBDKIT " --exit-with-parent -v -D nbdkit.environ=1 null 1024\n",
NULL
};
if (nbd_connect_systemd_socket_activation (nbd, cmd) == -1) {
fprintf (stderr, "%s\n", nbd_get_error ());
exit (EXIT_FAILURE);
}
/* Check the size is expected so we know we managed to connect to nbdkit. */
assert (nbd_get_size (nbd) == 1024);
nbd_close (nbd);
/* nbdkit doesn't know anything about socket activation names, but
* the LISTEN_FDNAMES environment variable should appear in the
* debug output.
*/
assert (system ("grep 'debug.*LISTEN_FDNAMES=unknown' " DEBUG_FILE) == 0);
unlink (DEBUG_FILE);
/* Test again with a specific name. */
nbd = nbd_create ();
if (nbd == NULL) {
fprintf (stderr, "%s\n", nbd_get_error ());
exit (EXIT_FAILURE);
}
/* Check we can set it to something and read that back. */
assert (nbd_set_socket_activation_name (nbd, "hello") == 0);
r = nbd_get_socket_activation_name (nbd);
assert (r != NULL);
assert (strcmp (r, "hello") == 0);
free (r);
/* Run external nbdkit again (same command as above). */
if (nbd_connect_systemd_socket_activation (nbd, cmd) == -1) {
fprintf (stderr, "%s\n", nbd_get_error ());
exit (EXIT_FAILURE);
}
assert (nbd_get_size (nbd) == 1024);
nbd_close (nbd);
/* Check LISTEN_FDNAMES was set to the known value. */
assert (system ("grep 'debug.*LISTEN_FDNAMES=hello' " DEBUG_FILE) == 0);
unlink (DEBUG_FILE);
exit (EXIT_SUCCESS);
}
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