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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
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <stdint.h>
#include <inttypes.h>
#include <string.h>
#include <libnbd.h>
#include "vector.h"
#include "nbdinfo.h"
struct export {
char *name;
char *desc;
};
DEFINE_VECTOR_TYPE (exports, struct export);
static exports export_list = empty_vector;
static int
collect_export (void *opaque, const char *name, const char *desc)
{
struct export e;
e.name = strdup (name);
e.desc = strdup (desc);
if (e.name == NULL || e.desc == NULL ||
exports_append (&export_list, e) == -1) {
perror ("malloc");
exit (EXIT_FAILURE);
}
return 0;
}
void
collect_exports (void)
{
if (nbd_opt_list (nbd,
(nbd_list_callback) {.callback = collect_export}) == -1) {
fprintf (stderr, "%s: %s\n", progname, nbd_get_error ());
exit (EXIT_FAILURE);
}
}
void
free_exports (void)
{
size_t i;
for (i = 0; i < export_list.len; ++i) {
free (export_list.ptr[i].name);
free (export_list.ptr[i].desc);
}
free (export_list.ptr);
}
bool
list_all_exports (void)
{
size_t i;
bool list_okay = true;
if (export_list.len == 0 && json_output)
fprintf (fp, "\"exports\": []\n");
for (i = 0; i < export_list.len; ++i) {
const char *name = export_list.ptr[i].name;
struct nbd_handle *nbd2;
if (probe_content) {
/* Connect to the original URI, but using opt mode to alter the export. */
nbd2 = nbd_create ();
if (nbd2 == NULL) {
fprintf (stderr, "%s: %s\n", progname, nbd_get_error ());
exit (EXIT_FAILURE);
}
nbd_set_uri_allow_local_file (nbd2, true); /* Allow ?tls-psk-file. */
nbd_set_opt_mode (nbd2, true);
nbd_set_request_meta_context (nbd2, false);
nbd_set_full_info (nbd2, true);
do_connect (nbd2);
if (nbd_set_export_name (nbd2, name) == -1) {
fprintf (stderr, "%s: %s\n", progname, nbd_get_error ());
exit (EXIT_FAILURE);
}
}
else { /* ! probe_content */
if (nbd_set_export_name (nbd, name) == -1) {
fprintf (stderr, "%s: %s\n", progname, nbd_get_error ());
exit (EXIT_FAILURE);
}
nbd2 = nbd;
}
/* List the metadata of this export. */
if (!show_one_export (nbd2, export_list.ptr[i].desc, i == 0,
i + 1 == export_list.len))
list_okay = false;
if (probe_content) {
nbd_shutdown (nbd2, 0);
nbd_close (nbd2);
}
}
return list_okay;
}
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