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/*
Unix SMB/CIFS implementation.
connection claim routines
Copyright (C) Andrew Tridgell 1998
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "smbd/smbd.h"
#include "smbd/globals.h"
#include "dbwrap/dbwrap.h"
#include "auth.h"
#include "../lib/tsocket/tsocket.h"
#include "messages.h"
struct count_stat {
int curr_connections;
const char *name;
bool verify;
};
/****************************************************************************
Count the entries belonging to a service in the connection db.
****************************************************************************/
static int count_fn(struct smbXsrv_tcon_global0 *tcon,
void *udp)
{
struct count_stat *cs = (struct count_stat *)udp;
if (cs->verify && !process_exists(tcon->server_id)) {
return 0;
}
if (strequal(tcon->share_name, cs->name)) {
cs->curr_connections++;
}
return 0;
}
/****************************************************************************
Claim an entry in the connections database.
****************************************************************************/
int count_current_connections(const char *sharename, bool verify)
{
struct count_stat cs;
NTSTATUS status;
cs.curr_connections = 0;
cs.name = sharename;
cs.verify = verify;
/*
* This has a race condition, but locking the chain before hand is worse
* as it leads to deadlock.
*/
status = smbXsrv_tcon_global_traverse(count_fn, &cs);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("count_current_connections: traverse of "
"smbXsrv_tcon_global.tdb failed - %s\n",
nt_errstr(status)));
return 0;
}
return cs.curr_connections;
}
bool connections_snum_used(struct smbd_server_connection *unused, int snum)
{
const struct loadparm_substitution *lp_sub =
loadparm_s3_global_substitution();
int active;
active = count_current_connections(lp_servicename(talloc_tos(), lp_sub, snum),
true);
if (active > 0) {
return true;
}
return false;
}
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