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/*
Unix SMB/CIFS implementation.
Main SMB server routines
Copyright (C) Andrew Tridgell 1992-1998
Copyright (C) Martin Pool 2002
Copyright (C) Jelmer Vernooij 2002-2003
Copyright (C) Volker Lendecke 1993-2007
Copyright (C) Jeremy Allison 1993-2007
Copyright (C) Andrew Bartlett 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/globals.h"
#include "librpc/gen_ndr/messaging.h"
static struct files_struct *log_writeable_file_fn(
struct files_struct *fsp, void *private_data)
{
bool *found = (bool *)private_data;
char *path;
if (!fsp->can_write) {
return NULL;
}
if (!(*found)) {
DEBUG(0, ("Writable files open at exit:\n"));
*found = true;
}
path = talloc_asprintf(talloc_tos(), "%s/%s", fsp->conn->connectpath,
smb_fname_str_dbg(fsp->fsp_name));
if (path == NULL) {
DEBUGADD(0, ("<NOMEM>\n"));
}
DEBUGADD(0, ("%s\n", path));
TALLOC_FREE(path);
return NULL;
}
/****************************************************************************
Exit the server.
****************************************************************************/
/* Reasons for shutting down a server process. */
enum server_exit_reason { SERVER_EXIT_NORMAL, SERVER_EXIT_ABNORMAL };
static void exit_server_common(enum server_exit_reason how,
const char *const reason) _NORETURN_;
static void exit_server_common(enum server_exit_reason how,
const char *const reason)
{
bool had_open_conn = false;
struct smbd_server_connection *sconn = smbd_server_conn;
if (!exit_firsttime)
exit(0);
exit_firsttime = false;
change_to_root_user();
if (sconn && sconn->smb1.negprot.auth_context) {
TALLOC_FREE(sconn->smb1.negprot.auth_context);
}
if (lp_log_writeable_files_on_exit()) {
bool found = false;
files_forall(log_writeable_file_fn, &found);
}
if (sconn) {
had_open_conn = conn_close_all(sconn);
invalidate_all_vuids(sconn);
}
/* 3 second timeout. */
print_notify_send_messages(sconn->msg_ctx, 3);
/* delete our entry in the serverid database. */
if (am_parent) {
/*
* For children the parent takes care of cleaning up
*/
serverid_deregister(sconn_server_id(sconn));
}
#ifdef WITH_DFS
if (dcelogin_atmost_once) {
dfs_unlogin();
}
#endif
#ifdef USE_DMAPI
/* Destroy Samba DMAPI session only if we are master smbd process */
if (am_parent) {
if (!dmapi_destroy_session()) {
DEBUG(0,("Unable to close Samba DMAPI session\n"));
}
}
#endif
locking_end();
printing_end();
/*
* we need to force the order of freeing the following,
* because smbd_msg_ctx is not a talloc child of smbd_server_conn.
*/
sconn = NULL;
TALLOC_FREE(smbd_server_conn);
server_messaging_context_free();
server_event_context_free();
TALLOC_FREE(smbd_memcache_ctx);
if (how != SERVER_EXIT_NORMAL) {
int oldlevel = DEBUGLEVEL;
DEBUGLEVEL = 10;
DEBUGSEP(0);
DEBUG(0,("Abnormal server exit: %s\n",
reason ? reason : "no explanation provided"));
DEBUGSEP(0);
log_stack_trace();
DEBUGLEVEL = oldlevel;
dump_core();
} else {
DEBUG(3,("Server exit (%s)\n",
(reason ? reason : "normal exit")));
if (am_parent) {
pidfile_unlink();
}
gencache_stabilize();
}
/* if we had any open SMB connections when we exited then we
need to tell the parent smbd so that it can trigger a retry
of any locks we may have been holding or open files we were
blocking */
if (had_open_conn) {
exit(1);
} else {
exit(0);
}
}
void exit_server(const char *const explanation)
{
exit_server_common(SERVER_EXIT_ABNORMAL, explanation);
}
void exit_server_cleanly(const char *const explanation)
{
exit_server_common(SERVER_EXIT_NORMAL, explanation);
}
void exit_server_fault(void)
{
exit_server("critical server fault");
}
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