mirror of
https://github.com/samba-team/samba.git
synced 2024-12-24 21:34:56 +03:00
1386200be5
At more than one large site I've seen significant problems due to gencache_stabilize. gencache_stabilize was mainly introduced to survive machine crashes with the cache still being in place. Given that most installations crash rarely and this is still a cache, this safety is overkill and causes real problems. With the recent changes to tdb, we should be safe enough to run on completely corrupted databases and properly detect errors. A further commit will introduce code that wipes the gencache.tdb if such a corruption is detected. There is one kind of corruption that we don't properly handle: Orphaned space in the database. I don't have a good idea yet how to handle this in a graceful and efficient way during normal operations, but maybe this idea pops up at some point. Signed-off-by: Volker Lendecke <vl@samba.org> Reviewed-by: Jeremy Allison <jra@samba.org>
269 lines
6.8 KiB
C
269 lines
6.8 KiB
C
/*
|
|
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/smbd.h"
|
|
#include "smbd/globals.h"
|
|
#include "ntdomain.h"
|
|
#include "../librpc/gen_ndr/srv_dfs.h"
|
|
#include "../librpc/gen_ndr/srv_dssetup.h"
|
|
#include "../librpc/gen_ndr/srv_echo.h"
|
|
#include "../librpc/gen_ndr/srv_eventlog.h"
|
|
#include "../librpc/gen_ndr/srv_initshutdown.h"
|
|
#include "../librpc/gen_ndr/srv_lsa.h"
|
|
#include "../librpc/gen_ndr/srv_netlogon.h"
|
|
#include "../librpc/gen_ndr/srv_ntsvcs.h"
|
|
#include "../librpc/gen_ndr/srv_samr.h"
|
|
#include "../librpc/gen_ndr/srv_spoolss.h"
|
|
#include "../librpc/gen_ndr/srv_srvsvc.h"
|
|
#include "../librpc/gen_ndr/srv_svcctl.h"
|
|
#include "../librpc/gen_ndr/srv_winreg.h"
|
|
#include "../librpc/gen_ndr/srv_wkssvc.h"
|
|
#include "printing/notify.h"
|
|
#include "printing.h"
|
|
#include "serverid.h"
|
|
#include "messages.h"
|
|
#include "passdb.h"
|
|
#include "../lib/util/pidfile.h"
|
|
#include "smbprofile.h"
|
|
#include "libcli/auth/netlogon_creds_cli.h"
|
|
#include "lib/gencache.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 *reason) _NORETURN_;
|
|
|
|
static void exit_server_common(enum server_exit_reason how,
|
|
const char *reason)
|
|
{
|
|
struct smbXsrv_client *client = global_smbXsrv_client;
|
|
struct smbXsrv_connection *xconn = NULL;
|
|
struct smbXsrv_connection *xconn_next = NULL;
|
|
struct smbd_server_connection *sconn = NULL;
|
|
struct messaging_context *msg_ctx = global_messaging_context();
|
|
|
|
if (client != NULL) {
|
|
sconn = client->sconn;
|
|
xconn = client->connections;
|
|
}
|
|
|
|
if (!exit_firsttime)
|
|
exit(0);
|
|
exit_firsttime = false;
|
|
|
|
change_to_root_user();
|
|
|
|
|
|
/*
|
|
* Here we typically have just one connection
|
|
*/
|
|
for (; xconn != NULL; xconn = xconn_next) {
|
|
xconn_next = xconn->next;
|
|
DLIST_REMOVE(client->connections, xconn);
|
|
|
|
/*
|
|
* This is typically the disconnect for the only
|
|
* (or with multi-channel last) connection of the client
|
|
*/
|
|
if (NT_STATUS_IS_OK(xconn->transport.status)) {
|
|
switch (how) {
|
|
case SERVER_EXIT_ABNORMAL:
|
|
xconn->transport.status = NT_STATUS_INTERNAL_ERROR;
|
|
break;
|
|
case SERVER_EXIT_NORMAL:
|
|
xconn->transport.status = NT_STATUS_LOCAL_DISCONNECT;
|
|
break;
|
|
}
|
|
}
|
|
|
|
TALLOC_FREE(xconn);
|
|
DO_PROFILE_INC(disconnect);
|
|
}
|
|
|
|
change_to_root_user();
|
|
|
|
if (sconn != NULL) {
|
|
if (lp_log_writeable_files_on_exit()) {
|
|
bool found = false;
|
|
files_forall(sconn, log_writeable_file_fn, &found);
|
|
}
|
|
}
|
|
|
|
change_to_root_user();
|
|
|
|
if (client != NULL) {
|
|
NTSTATUS status;
|
|
|
|
/*
|
|
* Note: this is a no-op for smb2 as
|
|
* conn->tcon_table is empty
|
|
*/
|
|
status = smb1srv_tcon_disconnect_all(client);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(0,("Server exit (%s)\n",
|
|
(reason ? reason : "normal exit")));
|
|
DEBUG(0, ("exit_server_common: "
|
|
"smb1srv_tcon_disconnect_all() failed (%s) - "
|
|
"triggering cleanup\n", nt_errstr(status)));
|
|
}
|
|
|
|
status = smbXsrv_session_logoff_all(client);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(0,("Server exit (%s)\n",
|
|
(reason ? reason : "normal exit")));
|
|
DEBUG(0, ("exit_server_common: "
|
|
"smbXsrv_session_logoff_all() failed (%s) - "
|
|
"triggering cleanup\n", nt_errstr(status)));
|
|
}
|
|
}
|
|
|
|
change_to_root_user();
|
|
|
|
/* 3 second timeout. */
|
|
print_notify_send_messages(msg_ctx, 3);
|
|
|
|
#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
|
|
|
|
if (am_parent) {
|
|
rpc_wkssvc_shutdown();
|
|
rpc_dssetup_shutdown();
|
|
#ifdef DEVELOPER
|
|
rpc_rpcecho_shutdown();
|
|
#endif
|
|
rpc_netdfs_shutdown();
|
|
rpc_initshutdown_shutdown();
|
|
rpc_eventlog_shutdown();
|
|
rpc_ntsvcs_shutdown();
|
|
rpc_svcctl_shutdown();
|
|
rpc_spoolss_shutdown();
|
|
|
|
rpc_srvsvc_shutdown();
|
|
rpc_winreg_shutdown();
|
|
|
|
rpc_netlogon_shutdown();
|
|
rpc_samr_shutdown();
|
|
rpc_lsarpc_shutdown();
|
|
}
|
|
|
|
/*
|
|
* we need to force the order of freeing the following,
|
|
* because smbd_msg_ctx is not a talloc child of smbd_server_conn.
|
|
*/
|
|
if (client != NULL) {
|
|
TALLOC_FREE(client->sconn);
|
|
}
|
|
sconn = NULL;
|
|
xconn = NULL;
|
|
client = NULL;
|
|
netlogon_creds_cli_close_global_db();
|
|
TALLOC_FREE(global_smbXsrv_client);
|
|
smbprofile_dump();
|
|
global_messaging_context_free();
|
|
global_event_context_free();
|
|
TALLOC_FREE(smbd_memcache_ctx);
|
|
|
|
locking_end();
|
|
printing_end();
|
|
|
|
if (how != SERVER_EXIT_NORMAL) {
|
|
|
|
smb_panic(reason);
|
|
|
|
/* Notreached. */
|
|
exit(1);
|
|
} else {
|
|
DEBUG(3,("Server exit (%s)\n",
|
|
(reason ? reason : "normal exit")));
|
|
if (am_parent) {
|
|
pidfile_unlink(lp_pid_directory(), "smbd");
|
|
}
|
|
}
|
|
|
|
exit(0);
|
|
}
|
|
|
|
void smbd_exit_server(const char *const explanation)
|
|
{
|
|
exit_server_common(SERVER_EXIT_ABNORMAL, explanation);
|
|
}
|
|
|
|
void smbd_exit_server_cleanly(const char *const explanation)
|
|
{
|
|
exit_server_common(SERVER_EXIT_NORMAL, explanation);
|
|
}
|
|
|
|
/*
|
|
* reinit_after_fork() wrapper that should be called when forking from
|
|
* smbd.
|
|
*/
|
|
NTSTATUS smbd_reinit_after_fork(struct messaging_context *msg_ctx,
|
|
struct tevent_context *ev_ctx,
|
|
bool parent_longlived, const char *comment)
|
|
{
|
|
NTSTATUS ret;
|
|
am_parent = NULL;
|
|
ret = reinit_after_fork(msg_ctx, ev_ctx, parent_longlived, comment);
|
|
initialize_password_db(true, ev_ctx);
|
|
return ret;
|
|
}
|