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Diffstat (limited to 'source3/smbd/conn_idle.c')
| -rw-r--r-- | source3/smbd/conn_idle.c | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/source3/smbd/conn_idle.c b/source3/smbd/conn_idle.c new file mode 100644 index 00000000000..46f5b7b111c --- /dev/null +++ b/source3/smbd/conn_idle.c @@ -0,0 +1,207 @@ +/* + 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_ncacn_np.h" + +/**************************************************************************** + Update last used timestamps. +****************************************************************************/ + +static void conn_lastused_update(struct smbd_server_connection *sconn,time_t t) +{ + if (sconn->using_smb2) { + /* SMB2 */ + struct smbd_smb2_session *sess; + for (sess = sconn->smb2.sessions.list; sess; sess = sess->next) { + struct smbd_smb2_tcon *ptcon; + + for (ptcon = sess->tcons.list; ptcon; ptcon = ptcon->next) { + connection_struct *conn = ptcon->compat_conn; + /* Update if connection wasn't idle. */ + if (conn && conn->lastused != conn->lastused_count) { + conn->lastused = t; + conn->lastused_count = t; + } + } + } + } else { + /* SMB1 */ + connection_struct *conn; + for (conn=sconn->smb1.tcons.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; + + conn_lastused_update(sconn, t); + + if (deadtime <= 0) { + deadtime = DEFAULT_SMBD_TIMEOUT; + } + + if (sconn->using_smb2) { + /* SMB2 */ + struct smbd_smb2_session *sess; + for (sess = sconn->smb2.sessions.list; sess; sess = sess->next) { + struct smbd_smb2_tcon *ptcon; + + for (ptcon = sess->tcons.list; ptcon; ptcon = ptcon->next) { + time_t age; + connection_struct *conn = ptcon->compat_conn; + + if (conn == NULL) { + continue; + } + + 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; + } + } + } + } else { + /* SMB1 */ + connection_struct *conn; + for (conn=sconn->smb1.tcons.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; + + 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->smb1.tcons.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->smb1.tcons.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); + } + } + } +} |