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c0288e0612
The performance of these is minimal (these days) and they can return invalid results when used as part of applications that do not use sys_fork(). Autobuild-User: Jelmer Vernooij <jelmer@samba.org> Autobuild-Date: Sat Mar 24 21:55:41 CET 2012 on sn-devel-104
233 lines
5.3 KiB
C
233 lines
5.3 KiB
C
/*
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* Unix SMB/CIFS implementation.
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*
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* SMBD RPC service callbacks
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*
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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 "serverid.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/gen_ndr/srv_epmapper.h"
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#include "rpc_server/rpc_server.h"
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#include "rpc_server/rpc_sock_helper.h"
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#include "rpc_server/epmapper/srv_epmapper.h"
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#define DAEMON_NAME "epmd"
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void start_epmd(struct tevent_context *ev_ctx,
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struct messaging_context *msg_ctx);
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static void epmd_reopen_logs(void)
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{
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char *lfile = lp_logfile();
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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(), 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 epmd_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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epmd_reopen_logs();
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}
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static void epmd_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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rpc_epmapper_shutdown();
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exit_server_cleanly("termination signal");
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}
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static void epmd_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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epmd_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 epmd_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,("Reloading printers after SIGHUP\n"));
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epmd_reopen_logs();
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}
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static void epmd_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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epmd_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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static bool epmapper_shutdown_cb(void *ptr) {
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srv_epmapper_cleanup();
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return true;
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}
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void start_epmd(struct tevent_context *ev_ctx,
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struct messaging_context *msg_ctx)
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{
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struct rpc_srv_callbacks epmapper_cb;
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NTSTATUS status;
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pid_t pid;
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bool ok;
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int rc;
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epmapper_cb.init = NULL;
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epmapper_cb.shutdown = epmapper_shutdown_cb;
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epmapper_cb.private_data = NULL;
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DEBUG(1, ("Forking Endpoint Mapper Daemon\n"));
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pid = fork();
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if (pid == -1) {
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DEBUG(0, ("Failed to fork Endpoint Mapper [%s], aborting ...\n",
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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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status = reinit_after_fork(msg_ctx,
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ev_ctx,
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true);
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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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epmd_reopen_logs();
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epmd_setup_sig_term_handler(ev_ctx);
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epmd_setup_sig_hup_handler(ev_ctx, msg_ctx);
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ok = serverid_register(procid_self(),
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FLAG_MSG_GENERAL |
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FLAG_MSG_PRINT_GENERAL);
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if (!ok) {
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DEBUG(0, ("Failed to register serverid in epmd!\n"));
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exit(1);
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}
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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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epmd_smb_conf_updated);
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status = rpc_epmapper_init(&epmapper_cb);
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if (!NT_STATUS_IS_OK(status)) {
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DEBUG(0, ("Failed to register epmd rpc inteface! (%s)\n",
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nt_errstr(status)));
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exit(1);
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}
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status = rpc_setup_tcpip_sockets(ev_ctx,
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msg_ctx,
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&ndr_table_epmapper,
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NULL,
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135);
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if (!NT_STATUS_IS_OK(status)) {
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DEBUG(0, ("Failed to open epmd tcpip sockets!\n"));
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exit(1);
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}
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ok = setup_dcerpc_ncalrpc_socket(ev_ctx,
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msg_ctx,
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"EPMAPPER",
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srv_epmapper_delete_endpoints);
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if (!ok) {
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DEBUG(0, ("Failed to open epmd ncalrpc pipe!\n"));
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exit(1);
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}
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ok = setup_named_pipe_socket("epmapper", ev_ctx, msg_ctx);
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if (!ok) {
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DEBUG(0, ("Failed to open epmd named pipe!\n"));
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exit(1);
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}
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DEBUG(1, ("Endpoint Mapper Daemon Started (%d)\n", 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,("background_queue: 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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/* vim: set ts=8 sw=8 noet cindent ft=c.doxygen: */
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