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4c09839ec9
Prototype is generated by the server compat parser. Signed-off-by: Samuel Cabrero <scabrero@samba.org> Reviewed-by: Andrew Bartlett <abartlet@samba.org>
240 lines
5.8 KiB
C
240 lines
5.8 KiB
C
/*
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* File Server Shadow-Copy Daemon
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*
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* Copyright (C) David Disseldorp 2012-2015
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*
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* Based on epmd.c:
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* Copyright (c) 2011 Andreas Schneider <asn@samba.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include "ntdomain.h"
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#include "messages.h"
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#include "librpc/rpc/dcerpc_ep.h"
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#include "librpc/rpc/dcesrv_core.h"
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#include "librpc/gen_ndr/ndr_fsrvp_scompat.h"
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#include "rpc_server/rpc_server.h"
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#include "rpc_server/rpc_service_setup.h"
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#include "rpc_server/rpc_sock_helper.h"
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#include "rpc_server/fss/srv_fss_agent.h"
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#include "rpc_server/fssd.h"
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#undef DBGC_CLASS
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#define DBGC_CLASS DBGC_RPC_SRV
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#define DAEMON_NAME "fssd"
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static void fssd_reopen_logs(void)
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{
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const struct loadparm_substitution *lp_sub =
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loadparm_s3_global_substitution();
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char *lfile = lp_logfile(NULL, lp_sub);
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int rc;
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if (lfile == NULL || lfile[0] == '\0') {
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rc = asprintf(&lfile, "%s/log.%s", get_dyn_LOGFILEBASE(), DAEMON_NAME);
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if (rc > 0) {
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lp_set_logfile(lfile);
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SAFE_FREE(lfile);
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}
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} else {
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if (strstr(lfile, DAEMON_NAME) == NULL) {
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rc = asprintf(&lfile, "%s.%s", lp_logfile(NULL, lp_sub), DAEMON_NAME);
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if (rc > 0) {
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lp_set_logfile(lfile);
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SAFE_FREE(lfile);
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}
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}
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}
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reopen_logs();
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}
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static void fssd_smb_conf_updated(struct messaging_context *msg,
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void *private_data,
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uint32_t msg_type,
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struct server_id server_id,
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DATA_BLOB *data)
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{
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DEBUG(10, ("Got message saying smb.conf was updated. Reloading.\n"));
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change_to_root_user();
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fssd_reopen_logs();
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}
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static void fssd_sig_term_handler(struct tevent_context *ev,
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struct tevent_signal *se,
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int signum,
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int count,
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void *siginfo,
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void *private_data)
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{
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exit_server_cleanly("termination signal");
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}
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static void fssd_setup_sig_term_handler(struct tevent_context *ev_ctx)
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{
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struct tevent_signal *se;
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se = tevent_add_signal(ev_ctx,
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ev_ctx,
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SIGTERM, 0,
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fssd_sig_term_handler,
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NULL);
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if (se == NULL) {
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exit_server("failed to setup SIGTERM handler");
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}
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}
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static void fssd_sig_hup_handler(struct tevent_context *ev,
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struct tevent_signal *se,
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int signum,
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int count,
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void *siginfo,
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void *private_data)
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{
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change_to_root_user();
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DEBUG(1,("reopening logs after SIGHUP\n"));
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fssd_reopen_logs();
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}
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static void fssd_setup_sig_hup_handler(struct tevent_context *ev_ctx,
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struct messaging_context *msg_ctx)
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{
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struct tevent_signal *se;
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se = tevent_add_signal(ev_ctx,
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ev_ctx,
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SIGHUP, 0,
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fssd_sig_hup_handler,
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msg_ctx);
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if (se == NULL) {
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exit_server("failed to setup SIGHUP handler");
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}
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}
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void start_fssd(struct tevent_context *ev_ctx,
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struct messaging_context *msg_ctx,
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struct dcesrv_context *dce_ctx)
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{
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NTSTATUS status;
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pid_t pid;
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int rc;
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const struct dcesrv_endpoint_server *ep_server = NULL;
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struct dcesrv_endpoint *e = NULL;
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DEBUG(1, ("Forking File Server Shadow-copy Daemon\n"));
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pid = fork();
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if (pid == -1) {
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DEBUG(0, ("failed to fork file server shadow-copy daemon [%s], "
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"aborting ...\n", strerror(errno)));
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exit(1);
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}
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if (pid) {
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/* parent */
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return;
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}
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/* child */
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status = smbd_reinit_after_fork(msg_ctx, ev_ctx, true, NULL);
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if (!NT_STATUS_IS_OK(status)) {
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DEBUG(0,("reinit_after_fork() failed\n"));
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smb_panic("reinit_after_fork() failed");
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}
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fssd_reopen_logs();
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fssd_setup_sig_term_handler(ev_ctx);
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fssd_setup_sig_hup_handler(ev_ctx, msg_ctx);
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messaging_register(msg_ctx,
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ev_ctx,
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MSG_SMB_CONF_UPDATED,
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fssd_smb_conf_updated);
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DBG_INFO("Registering DCE/RPC endpoint servers\n");
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ep_server = FileServerVssAgent_get_ep_server();
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if (ep_server == NULL) {
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DBG_ERR("Failed to get 'FileServerVssAgent' endpoint "
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"server\n");
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exit(1);
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}
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status = dcerpc_register_ep_server(ep_server);
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if (!NT_STATUS_IS_OK(status)) {
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DBG_ERR("Failed to register 'FileServerVssAgent' endpoint "
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"server: %s\n", nt_errstr(status));
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exit(1);
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}
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DBG_INFO("Reinitializing DCE/RPC server context\n");
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status = dcesrv_reinit_context(dce_ctx);
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if (!NT_STATUS_IS_OK(status)) {
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DBG_ERR("Failed to reinit DCE/RPC context: %s\n",
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nt_errstr(status));
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exit(1);
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}
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DBG_INFO("Initializing DCE/RPC registered endpoint servers\n");
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status = dcesrv_init_ep_server(dce_ctx, "FileServerVssAgent");
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if (!NT_STATUS_IS_OK(status)) {
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DBG_ERR("Failed to init DCE/RPC endpoint server: %s\n",
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nt_errstr(status));
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exit(1);
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}
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DBG_INFO("Initializing DCE/RPC connection endpoints\n");
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for (e = dce_ctx->endpoint_list; e; e = e->next) {
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status = dcesrv_setup_endpoint_sockets(ev_ctx,
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msg_ctx,
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dce_ctx,
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e,
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NULL, /* termination function */
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NULL); /* termination data */
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if (!NT_STATUS_IS_OK(status)) {
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char *ep_string = dcerpc_binding_string(
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dce_ctx, e->ep_description);
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DBG_ERR("Failed to setup endpoint '%s': %s\n",
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ep_string, nt_errstr(status));
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TALLOC_FREE(ep_string);
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exit(1);
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}
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}
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DEBUG(1, ("File Server Shadow-copy Daemon Started (%d)\n",
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(int)getpid()));
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/* loop forever */
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rc = tevent_loop_wait(ev_ctx);
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/* should not be reached */
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DEBUG(0,("tevent_loop_wait() exited with %d - %s\n",
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rc, (rc == 0) ? "out of events" : strerror(errno)));
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exit(1);
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}
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