mirror of
https://github.com/samba-team/samba.git
synced 2024-12-24 21:34:56 +03:00
41cfc737df
Signed-off-by: Volker Lendecke <vl@samba.org> Reviewed-by: Jeremy Allison <jra@samba.org> Autobuild-User(master): Jeremy Allison <jra@samba.org> Autobuild-Date(master): Tue Dec 5 04:58:26 CET 2017 on sn-devel-144
215 lines
5.0 KiB
C
215 lines
5.0 KiB
C
/*
|
|
* File Server Shadow-Copy Daemon
|
|
*
|
|
* Copyright (C) David Disseldorp 2012-2015
|
|
*
|
|
* Based on epmd.c:
|
|
* Copyright (c) 2011 Andreas Schneider <asn@samba.org>
|
|
*
|
|
* 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 "ntdomain.h"
|
|
#include "messages.h"
|
|
|
|
#include "librpc/rpc/dcerpc_ep.h"
|
|
#include "../librpc/gen_ndr/srv_fsrvp.h"
|
|
#include "rpc_server/rpc_server.h"
|
|
#include "rpc_server/rpc_sock_helper.h"
|
|
#include "rpc_server/fss/srv_fss_agent.h"
|
|
|
|
#define DAEMON_NAME "fssd"
|
|
|
|
void start_fssd(struct tevent_context *ev_ctx,
|
|
struct messaging_context *msg_ctx);
|
|
|
|
static void fssd_reopen_logs(void)
|
|
{
|
|
char *lfile = lp_logfile(NULL);
|
|
int rc;
|
|
|
|
if (lfile == NULL || lfile[0] == '\0') {
|
|
rc = asprintf(&lfile, "%s/log.%s", get_dyn_LOGFILEBASE(), DAEMON_NAME);
|
|
if (rc > 0) {
|
|
lp_set_logfile(lfile);
|
|
SAFE_FREE(lfile);
|
|
}
|
|
} else {
|
|
if (strstr(lfile, DAEMON_NAME) == NULL) {
|
|
rc = asprintf(&lfile, "%s.%s", lp_logfile(NULL), DAEMON_NAME);
|
|
if (rc > 0) {
|
|
lp_set_logfile(lfile);
|
|
SAFE_FREE(lfile);
|
|
}
|
|
}
|
|
}
|
|
|
|
reopen_logs();
|
|
}
|
|
|
|
static void fssd_smb_conf_updated(struct messaging_context *msg,
|
|
void *private_data,
|
|
uint32_t msg_type,
|
|
struct server_id server_id,
|
|
DATA_BLOB *data)
|
|
{
|
|
DEBUG(10, ("Got message saying smb.conf was updated. Reloading.\n"));
|
|
change_to_root_user();
|
|
fssd_reopen_logs();
|
|
}
|
|
|
|
static void fssd_sig_term_handler(struct tevent_context *ev,
|
|
struct tevent_signal *se,
|
|
int signum,
|
|
int count,
|
|
void *siginfo,
|
|
void *private_data)
|
|
{
|
|
rpc_FileServerVssAgent_shutdown();
|
|
|
|
exit_server_cleanly("termination signal");
|
|
}
|
|
|
|
static void fssd_setup_sig_term_handler(struct tevent_context *ev_ctx)
|
|
{
|
|
struct tevent_signal *se;
|
|
|
|
se = tevent_add_signal(ev_ctx,
|
|
ev_ctx,
|
|
SIGTERM, 0,
|
|
fssd_sig_term_handler,
|
|
NULL);
|
|
if (se == NULL) {
|
|
exit_server("failed to setup SIGTERM handler");
|
|
}
|
|
}
|
|
|
|
static void fssd_sig_hup_handler(struct tevent_context *ev,
|
|
struct tevent_signal *se,
|
|
int signum,
|
|
int count,
|
|
void *siginfo,
|
|
void *private_data)
|
|
{
|
|
change_to_root_user();
|
|
|
|
DEBUG(1,("reopening logs after SIGHUP\n"));
|
|
fssd_reopen_logs();
|
|
}
|
|
|
|
static void fssd_setup_sig_hup_handler(struct tevent_context *ev_ctx,
|
|
struct messaging_context *msg_ctx)
|
|
{
|
|
struct tevent_signal *se;
|
|
|
|
se = tevent_add_signal(ev_ctx,
|
|
ev_ctx,
|
|
SIGHUP, 0,
|
|
fssd_sig_hup_handler,
|
|
msg_ctx);
|
|
if (se == NULL) {
|
|
exit_server("failed to setup SIGHUP handler");
|
|
}
|
|
}
|
|
|
|
static bool fss_shutdown_cb(void *ptr)
|
|
{
|
|
srv_fssa_cleanup();
|
|
return true;
|
|
}
|
|
|
|
static bool fss_init_cb(void *ptr)
|
|
{
|
|
NTSTATUS status;
|
|
struct messaging_context *msg_ctx;
|
|
|
|
msg_ctx = talloc_get_type_abort(ptr, struct messaging_context);
|
|
status = srv_fssa_start(msg_ctx);
|
|
return NT_STATUS_IS_OK(status);
|
|
}
|
|
|
|
void start_fssd(struct tevent_context *ev_ctx,
|
|
struct messaging_context *msg_ctx)
|
|
{
|
|
struct rpc_srv_callbacks fss_cb;
|
|
NTSTATUS status;
|
|
pid_t pid;
|
|
bool ok;
|
|
int rc;
|
|
|
|
fss_cb.init = fss_init_cb;
|
|
fss_cb.shutdown = fss_shutdown_cb;
|
|
fss_cb.private_data = msg_ctx;
|
|
|
|
DEBUG(1, ("Forking File Server Shadow-copy Daemon\n"));
|
|
|
|
pid = fork();
|
|
|
|
if (pid == -1) {
|
|
DEBUG(0, ("failed to fork file server shadow-copy daemon [%s], "
|
|
"aborting ...\n", strerror(errno)));
|
|
exit(1);
|
|
}
|
|
|
|
if (pid) {
|
|
/* parent */
|
|
return;
|
|
}
|
|
|
|
/* child */
|
|
status = smbd_reinit_after_fork(msg_ctx, ev_ctx, true, NULL);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(0,("reinit_after_fork() failed\n"));
|
|
smb_panic("reinit_after_fork() failed");
|
|
}
|
|
|
|
fssd_reopen_logs();
|
|
|
|
fssd_setup_sig_term_handler(ev_ctx);
|
|
fssd_setup_sig_hup_handler(ev_ctx, msg_ctx);
|
|
|
|
messaging_register(msg_ctx,
|
|
ev_ctx,
|
|
MSG_SMB_CONF_UPDATED,
|
|
fssd_smb_conf_updated);
|
|
|
|
status = rpc_FileServerVssAgent_init(&fss_cb);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(0, ("Failed to register fssd rpc interface! (%s)\n",
|
|
nt_errstr(status)));
|
|
exit(1);
|
|
}
|
|
|
|
/* case is normalized by smbd on connection */
|
|
ok = setup_named_pipe_socket("fssagentrpc", ev_ctx, msg_ctx);
|
|
if (!ok) {
|
|
DEBUG(0, ("Failed to open fssd named pipe!\n"));
|
|
exit(1);
|
|
}
|
|
|
|
DEBUG(1, ("File Server Shadow-copy Daemon Started (%d)\n",
|
|
(int)getpid()));
|
|
|
|
/* loop forever */
|
|
rc = tevent_loop_wait(ev_ctx);
|
|
|
|
/* should not be reached */
|
|
DEBUG(0,("tevent_loop_wait() exited with %d - %s\n",
|
|
rc, (rc == 0) ? "out of events" : strerror(errno)));
|
|
|
|
exit(1);
|
|
}
|