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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
*/
/* Deliberately provoke some errors and check the error messages from
* nbd_get_error etc look reasonable.
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <sys/stat.h>
#include <libnbd.h>
static char *progname;
static char buf[512];
static void
check (int experr, const char *prefix)
{
const char *msg = nbd_get_error ();
int errnum = nbd_get_errno ();
fprintf (stderr, "error: \"%s\"\n", msg);
fprintf (stderr, "errno: %d (%s)\n", errnum, strerror (errnum));
if (strncmp (msg, prefix, strlen (prefix)) != 0) {
fprintf (stderr, "%s: test failed: missing context prefix: %s\n",
progname, msg);
exit (EXIT_FAILURE);
}
if (errnum != experr) {
fprintf (stderr, "%s: test failed: "
"expected errno = %d (%s), but got %d\n",
progname, experr, strerror (experr), errnum);
exit (EXIT_FAILURE);
}
}
static bool chunk_clean; /* whether check_chunk has been called */
static bool completion_clean; /* whether check_completion has been called */
static void
check_chunk (void *data) {
if (chunk_clean) {
fprintf (stderr, "%s: test failed: "
"chunk callback invoked multiple times\n", progname);
exit (EXIT_FAILURE);
}
chunk_clean = true;
}
static void
check_completion (void *data) {
if (completion_clean) {
fprintf (stderr, "%s: test failed: "
"completion callback invoked multiple times\n", progname);
exit (EXIT_FAILURE);
}
completion_clean = true;
}
int
main (int argc, char *argv[])
{
struct nbd_handle *nbd;
const char *cmd[] = {
NBDKIT, "-s", "-v", "--exit-with-parent", "memory", "1048576", NULL
};
progname = argv[0];
nbd = nbd_create ();
if (nbd == NULL) {
fprintf (stderr, "%s\n", nbd_get_error ());
exit (EXIT_FAILURE);
}
/* Connect to the server. */
if (nbd_connect_command (nbd, (char **)cmd) == -1) {
fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ());
exit (EXIT_FAILURE);
}
/* We guarantee callbacks will be freed even on all error paths. */
if (nbd_aio_pread_structured (nbd, buf, 512, -1,
(nbd_chunk_callback) { .free = check_chunk, },
(nbd_completion_callback) {
.free = check_completion, },
0) != -1) {
fprintf (stderr, "%s: test failed: "
"nbd_aio_pread_structured did not fail with bogus offset\n",
argv[0]);
exit (EXIT_FAILURE);
}
check (EINVAL, "nbd_aio_pread_structured: ");
if (!chunk_clean || !completion_clean) {
fprintf (stderr, "%s: test failed: "
"callbacks not freed on nbd_aio_pread_structured failure\n",
argv[0]);
exit (EXIT_FAILURE);
}
nbd_close (nbd);
exit (EXIT_SUCCESS);
}
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