/* Unix SMB/CIFS implementation. Manage connections_struct structures Copyright (C) Andrew Tridgell 1998 Copyright (C) Alexander Bokovoy 2002 Copyright (C) Jeremy Allison 2010 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 "rpc_server/rpc_pipes.h" /**************************************************************************** Update last used timestamps. ****************************************************************************/ static void conn_lastused_update(struct smbd_server_connection *sconn,time_t t) { struct connection_struct *conn; for (conn=sconn->connections; conn; conn=conn->next) { /* Update if connection wasn't idle. */ if (conn->lastused != conn->lastused_count) { conn->lastused = t; conn->lastused_count = t; } } } /**************************************************************************** Idle inactive connections. ****************************************************************************/ bool conn_idle_all(struct smbd_server_connection *sconn, time_t t) { int deadtime = lp_deadtime()*60; struct connection_struct *conn; conn_lastused_update(sconn, t); if (deadtime <= 0) { deadtime = DEFAULT_SMBD_TIMEOUT; } for (conn=sconn->connections;conn;conn=conn->next) { time_t age = t - conn->lastused; /* close dirptrs on connections that are idle */ if (age > DPTR_IDLE_TIMEOUT) { dptr_idlecnum(conn); } if (conn->num_files_open > 0 || age < deadtime) { return false; } } /* * Check all pipes for any open handles. We cannot * idle with a handle open. */ if (check_open_pipes()) { return false; } return true; } /**************************************************************************** Close all conn structures. Return true if any were closed. ****************************************************************************/ bool conn_close_all(struct smbd_server_connection *sconn) { bool ret = false; if (sconn->using_smb2) { /* SMB2 */ struct smbd_smb2_session *sess; for (sess = sconn->smb2.sessions.list; sess; sess = sess->next) { struct smbd_smb2_tcon *tcon, *tc_next; file_close_user(sconn, sess->vuid); for (tcon = sess->tcons.list; tcon; tcon = tc_next) { tc_next = tcon->next; TALLOC_FREE(tcon); ret = true; } } } else { /* SMB1 */ connection_struct *conn, *next; for (conn=sconn->connections;conn;conn=next) { next=conn->next; set_current_service(conn, 0, True); close_cnum(conn, conn->vuid); ret = true; } } return ret; } /**************************************************************************** Forcibly unmount a share. All instances of the parameter 'sharename' share are unmounted. The special sharename '*' forces unmount of all shares. ****************************************************************************/ void conn_force_tdis(struct smbd_server_connection *sconn, const char *sharename) { connection_struct *conn, *next; if (strcmp(sharename, "*") == 0) { DEBUG(1,("Forcing close of all shares\n")); conn_close_all(sconn); return; } if (sconn->using_smb2) { /* SMB2 */ struct smbd_smb2_session *sess; for (sess = sconn->smb2.sessions.list; sess; sess = sess->next) { struct smbd_smb2_tcon *tcon, *tc_next; for (tcon = sess->tcons.list; tcon; tcon = tc_next) { tc_next = tcon->next; if (tcon->compat_conn && strequal(lp_servicename(SNUM(tcon->compat_conn)), sharename)) { DEBUG(1,("Forcing close of share %s cnum=%d\n", sharename, tcon->compat_conn->cnum)); TALLOC_FREE(tcon); } } } } else { /* SMB1 */ for (conn=sconn->connections;conn;conn=next) { next=conn->next; if (strequal(lp_servicename(SNUM(conn)), sharename)) { DEBUG(1,("Forcing close of share %s cnum=%d\n", sharename, conn->cnum)); close_cnum(conn, (uint16)-1); } } } }