2 Unix SMB/CIFS implementation.
3 Main SMB server routines
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Martin Pool 2002
6 Copyright (C) Jelmer Vernooij 2002-2003
7 Copyright (C) Volker Lendecke 1993-2007
8 Copyright (C) Jeremy Allison 1993-2007
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
25 #include "system/filesys.h"
26 #include "popt_common.h"
27 #include "smbd/smbd.h"
28 #include "smbd/globals.h"
29 #include "registry/reg_init_full.h"
30 #include "libcli/auth/schannel.h"
33 #include "ctdbd_conn.h"
34 #include "printing/queue_process.h"
35 #include "rpc_server/rpc_service_setup.h"
36 #include "rpc_server/rpc_config.h"
41 #include "smbprofile.h"
42 #include "lib/id_cache.h"
43 #include "lib/param/param.h"
44 #include "lib/background.h"
45 #include "lib/conn_tdb.h"
46 #include "../lib/util/pidfile.h"
47 #include "lib/smbd_shim.h"
48 #include "scavenger.h"
50 struct smbd_open_socket;
51 struct smbd_child_pid;
53 struct smbd_parent_context {
56 struct tevent_context *ev_ctx;
57 struct messaging_context *msg_ctx;
59 /* the list of listening sockets */
60 struct smbd_open_socket *sockets;
62 /* the list of current child processes */
63 struct smbd_child_pid *children;
66 struct timed_event *cleanup_te;
69 struct smbd_open_socket {
70 struct smbd_open_socket *prev, *next;
71 struct smbd_parent_context *parent;
73 struct tevent_fd *fde;
76 struct smbd_child_pid {
77 struct smbd_child_pid *prev, *next;
81 extern void start_epmd(struct tevent_context *ev_ctx,
82 struct messaging_context *msg_ctx);
84 extern void start_lsasd(struct event_context *ev_ctx,
85 struct messaging_context *msg_ctx);
88 extern int dcelogin_atmost_once;
91 /*******************************************************************
92 What to do when smb.conf is updated.
93 ********************************************************************/
95 static void smbd_parent_conf_updated(struct messaging_context *msg,
98 struct server_id server_id,
101 struct tevent_context *ev_ctx =
102 talloc_get_type_abort(private_data, struct tevent_context);
104 DEBUG(10,("smbd_parent_conf_updated: Got message saying smb.conf was "
105 "updated. Reloading.\n"));
106 change_to_root_user();
107 reload_services(NULL, NULL, false);
108 printing_subsystem_update(ev_ctx, msg, false);
111 /*******************************************************************
112 What to do when printcap is updated.
113 ********************************************************************/
115 static void smb_pcap_updated(struct messaging_context *msg,
118 struct server_id server_id,
121 struct tevent_context *ev_ctx =
122 talloc_get_type_abort(private_data, struct tevent_context);
124 DEBUG(10,("Got message saying pcap was updated. Reloading.\n"));
125 change_to_root_user();
126 delete_and_reload_printers(ev_ctx, msg);
129 /*******************************************************************
130 Delete a statcache entry.
131 ********************************************************************/
133 static void smb_stat_cache_delete(struct messaging_context *msg,
136 struct server_id server_id,
139 const char *name = (const char *)data->data;
140 DEBUG(10,("smb_stat_cache_delete: delete name %s\n", name));
141 stat_cache_delete(name);
144 /****************************************************************************
145 Send a SIGTERM to our process group.
146 *****************************************************************************/
148 static void killkids(void)
150 if(am_parent) kill(0,SIGTERM);
153 static void msg_exit_server(struct messaging_context *msg,
156 struct server_id server_id,
159 DEBUG(3, ("got a SHUTDOWN message\n"));
160 exit_server_cleanly(NULL);
164 static void msg_inject_fault(struct messaging_context *msg,
167 struct server_id src,
172 if (data->length != sizeof(sig)) {
173 DEBUG(0, ("Process %s sent bogus signal injection request\n",
174 procid_str_static(&src)));
178 sig = *(int *)data->data;
180 exit_server("internal error injected");
185 DEBUG(0, ("Process %s requested injection of signal %d (%s)\n",
186 procid_str_static(&src), sig, strsignal(sig)));
188 DEBUG(0, ("Process %s requested injection of signal %d\n",
189 procid_str_static(&src), sig));
194 #endif /* DEVELOPER */
196 NTSTATUS messaging_send_to_children(struct messaging_context *msg_ctx,
197 uint32_t msg_type, DATA_BLOB* data)
200 struct smbd_parent_context *parent = am_parent;
201 struct smbd_child_pid *child;
203 if (parent == NULL) {
204 return NT_STATUS_INTERNAL_ERROR;
207 for (child = parent->children; child != NULL; child = child->next) {
208 status = messaging_send(parent->msg_ctx,
209 pid_to_procid(child->pid),
211 if (!NT_STATUS_IS_OK(status)) {
219 * Parent smbd process sets its own debug level first and then
220 * sends a message to all the smbd children to adjust their debug
221 * level to that of the parent.
224 static void smbd_msg_debug(struct messaging_context *msg_ctx,
227 struct server_id server_id,
230 debug_message(msg_ctx, private_data, MSG_DEBUG, server_id, data);
232 messaging_send_to_children(msg_ctx, MSG_DEBUG, data);
235 static void smbd_parent_id_cache_kill(struct messaging_context *msg_ctx,
238 struct server_id server_id,
241 const char *msg = (data && data->data)
242 ? (const char *)data->data : "<NULL>";
243 struct id_cache_ref id;
245 if (!id_cache_ref_parse(msg, &id)) {
246 DEBUG(0, ("Invalid ?ID: %s\n", msg));
250 id_cache_delete_from_cache(&id);
252 messaging_send_to_children(msg_ctx, msg_type, data);
255 static void smbd_parent_id_cache_delete(struct messaging_context *ctx,
258 struct server_id srv_id,
261 id_cache_delete_message(ctx, data, msg_type, srv_id, msg_data);
263 messaging_send_to_children(ctx, msg_type, msg_data);
266 struct smbd_parent_notify_state {
267 struct tevent_context *ev;
268 struct messaging_context *msg;
270 struct notify_context *notify;
273 static int smbd_parent_notify_cleanup(void *private_data);
274 static void smbd_parent_notify_cleanup_done(struct tevent_req *req);
275 static void smbd_parent_notify_proxy_done(struct tevent_req *req);
277 static bool smbd_parent_notify_init(TALLOC_CTX *mem_ctx,
278 struct messaging_context *msg,
279 struct tevent_context *ev)
281 struct smbd_parent_notify_state *state;
282 struct tevent_req *req;
284 state = talloc(mem_ctx, struct smbd_parent_notify_state);
290 state->msgtype = MSG_SMB_NOTIFY_CLEANUP;
292 state->notify = notify_init(state, msg, ev);
293 if (state->notify == NULL) {
296 req = background_job_send(
297 state, state->ev, state->msg, &state->msgtype, 1,
298 lp_parm_int(-1, "smbd", "notify cleanup interval", 60),
299 smbd_parent_notify_cleanup, state->notify);
303 tevent_req_set_callback(req, smbd_parent_notify_cleanup_done, state);
305 if (!lp_clustering()) {
309 req = notify_cluster_proxy_send(state, ev, state->notify);
313 tevent_req_set_callback(req, smbd_parent_notify_proxy_done, state);
321 static int smbd_parent_notify_cleanup(void *private_data)
323 struct notify_context *notify = talloc_get_type_abort(
324 private_data, struct notify_context);
325 notify_cleanup(notify);
326 return lp_parm_int(-1, "smbd", "notify cleanup interval", 60);
329 static void smbd_parent_notify_cleanup_done(struct tevent_req *req)
331 struct smbd_parent_notify_state *state = tevent_req_callback_data(
332 req, struct smbd_parent_notify_state);
335 status = background_job_recv(req);
337 DEBUG(1, ("notify cleanup job ended with %s\n", nt_errstr(status)));
340 * Provide self-healing: Whatever the error condition was, it
341 * will have printed it into log.smbd. Just retrying and
342 * spamming log.smbd once a minute should be fine.
344 req = background_job_send(
345 state, state->ev, state->msg, &state->msgtype, 1, 60,
346 smbd_parent_notify_cleanup, state->notify);
348 DEBUG(1, ("background_job_send failed\n"));
351 tevent_req_set_callback(req, smbd_parent_notify_cleanup_done, state);
354 static void smbd_parent_notify_proxy_done(struct tevent_req *req)
358 ret = notify_cluster_proxy_recv(req);
360 DEBUG(1, ("notify proxy job ended with %s\n", strerror(ret)));
363 static void smb_parent_force_tdis(struct messaging_context *ctx,
366 struct server_id srv_id,
369 messaging_send_to_children(ctx, msg_type, msg_data);
372 static void add_child_pid(struct smbd_parent_context *parent,
375 struct smbd_child_pid *child;
377 child = talloc_zero(parent, struct smbd_child_pid);
379 DEBUG(0, ("Could not add child struct -- malloc failed\n"));
383 DLIST_ADD(parent->children, child);
384 parent->num_children += 1;
388 at most every smbd:cleanuptime seconds (default 20), we scan the BRL
389 and locking database for entries to cleanup. As a side effect this
390 also cleans up dead entries in the connections database (due to the
391 traversal in message_send_all()
393 Using a timer for this prevents a flood of traversals when a large
394 number of clients disconnect at the same time (perhaps due to a
398 static void cleanup_timeout_fn(struct event_context *event_ctx,
399 struct timed_event *te,
403 struct smbd_parent_context *parent =
404 talloc_get_type_abort(private_data,
405 struct smbd_parent_context);
407 parent->cleanup_te = NULL;
409 DEBUG(1,("Cleaning up brl and lock database after unclean shutdown\n"));
410 message_send_all(parent->msg_ctx, MSG_SMB_UNLOCK, NULL, 0, NULL);
411 messaging_send_buf(parent->msg_ctx,
412 messaging_server_id(parent->msg_ctx),
413 MSG_SMB_BRL_VALIDATE, NULL, 0);
416 static void remove_child_pid(struct smbd_parent_context *parent,
418 bool unclean_shutdown)
420 struct smbd_child_pid *child;
421 struct server_id child_id;
423 child_id = pid_to_procid(pid);
425 for (child = parent->children; child != NULL; child = child->next) {
426 if (child->pid == pid) {
427 struct smbd_child_pid *tmp = child;
428 DLIST_REMOVE(parent->children, child);
430 parent->num_children -= 1;
436 /* not all forked child processes are added to the children list */
437 DEBUG(2, ("Could not find child %d -- ignoring\n", (int)pid));
441 if (unclean_shutdown) {
442 /* a child terminated uncleanly so tickle all
443 processes to see if they can grab any of the
446 DEBUG(3,(__location__ " Unclean shutdown of pid %u\n",
448 if (parent->cleanup_te == NULL) {
449 /* call the cleanup timer, but not too often */
450 int cleanup_time = lp_parm_int(-1, "smbd", "cleanuptime", 20);
451 parent->cleanup_te = tevent_add_timer(parent->ev_ctx,
453 timeval_current_ofs(cleanup_time, 0),
456 DEBUG(1,("Scheduled cleanup of brl and lock database after unclean shutdown\n"));
460 * Ensure we flush any stored messages
461 * queued for the child process that
462 * terminated uncleanly.
464 messaging_cleanup_server(parent->msg_ctx, child_id);
467 if (!serverid_deregister(child_id)) {
468 DEBUG(1, ("Could not remove pid %d from serverid.tdb\n",
473 /****************************************************************************
474 Have we reached the process limit ?
475 ****************************************************************************/
477 static bool allowable_number_of_smbd_processes(struct smbd_parent_context *parent)
479 int max_processes = lp_max_smbd_processes();
484 return parent->num_children < max_processes;
487 static void smbd_sig_chld_handler(struct tevent_context *ev,
488 struct tevent_signal *se,
496 struct smbd_parent_context *parent =
497 talloc_get_type_abort(private_data,
498 struct smbd_parent_context);
500 while ((pid = sys_waitpid(-1, &status, WNOHANG)) > 0) {
501 bool unclean_shutdown = False;
503 /* If the child terminated normally, assume
504 it was an unclean shutdown unless the
507 if (WIFEXITED(status)) {
508 unclean_shutdown = WEXITSTATUS(status);
510 /* If the child terminated due to a signal
511 we always assume it was unclean.
513 if (WIFSIGNALED(status)) {
514 unclean_shutdown = True;
516 remove_child_pid(parent, pid, unclean_shutdown);
520 static void smbd_setup_sig_chld_handler(struct smbd_parent_context *parent)
522 struct tevent_signal *se;
524 se = tevent_add_signal(parent->ev_ctx,
525 parent, /* mem_ctx */
527 smbd_sig_chld_handler,
530 exit_server("failed to setup SIGCHLD handler");
534 static void smbd_open_socket_close_fn(struct tevent_context *ev,
535 struct tevent_fd *fde,
539 /* this might be the socket_wrapper swrap_close() */
543 static void smbd_accept_connection(struct tevent_context *ev,
544 struct tevent_fd *fde,
548 struct smbd_open_socket *s = talloc_get_type_abort(private_data,
549 struct smbd_open_socket);
550 struct messaging_context *msg_ctx = s->parent->msg_ctx;
551 struct sockaddr_storage addr;
552 socklen_t in_addrlen = sizeof(addr);
557 fd = accept(s->fd, (struct sockaddr *)(void *)&addr,&in_addrlen);
558 if (fd == -1 && errno == EINTR)
562 DEBUG(0,("open_sockets_smbd: accept: %s\n",
567 if (s->parent->interactive) {
568 reinit_after_fork(msg_ctx, ev, true);
569 smbd_process(ev, msg_ctx, fd, true);
570 exit_server_cleanly("end of interactive mode");
574 if (!allowable_number_of_smbd_processes(s->parent)) {
580 * Generate a unique id in the parent process so that we use
581 * the global random state in the parent.
583 unique_id = serverid_get_random_unique_id();
587 NTSTATUS status = NT_STATUS_OK;
593 * Can't use TALLOC_FREE here. Nulling out the argument to it
594 * would overwrite memory we've just freed.
596 talloc_free(s->parent);
599 set_my_unique_id(unique_id);
601 /* Stop zombies, the parent explicitly handles
602 * them, counting worker smbds. */
605 status = reinit_after_fork(msg_ctx,
608 if (!NT_STATUS_IS_OK(status)) {
609 if (NT_STATUS_EQUAL(status,
610 NT_STATUS_TOO_MANY_OPENED_FILES)) {
611 DEBUG(0,("child process cannot initialize "
612 "because too many files are open\n"));
615 if (lp_clustering() &&
616 NT_STATUS_EQUAL(status,
617 NT_STATUS_INTERNAL_DB_ERROR)) {
618 DEBUG(1,("child process cannot initialize "
619 "because connection to CTDB "
624 DEBUG(0,("reinit_after_fork() failed\n"));
625 smb_panic("reinit_after_fork() failed");
628 smbd_process(ev, msg_ctx, fd, false);
630 exit_server_cleanly("end of child");
635 DEBUG(0,("smbd_accept_connection: fork() failed: %s\n",
639 /* The parent doesn't need this socket */
642 /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
643 Clear the closed fd info out of server_fd --
644 and more importantly, out of client_fd in
645 util_sock.c, to avoid a possible
646 getpeername failure if we reopen the logs
647 and use %I in the filename.
651 add_child_pid(s->parent, pid);
654 /* Force parent to check log size after
655 * spawning child. Fix from
656 * klausr@ITAP.Physik.Uni-Stuttgart.De. The
657 * parent smbd will log to logserver.smb. It
658 * writes only two messages for each child
659 * started/finished. But each child writes,
660 * say, 50 messages also in logserver.smb,
661 * begining with the debug_count of the
662 * parent, before the child opens its own log
663 * file logserver.client. In a worst case
664 * scenario the size of logserver.smb would be
665 * checked after about 50*50=2500 messages
668 force_check_log_size();
671 static bool smbd_open_one_socket(struct smbd_parent_context *parent,
672 struct tevent_context *ev_ctx,
673 struct messaging_context *msg_ctx,
674 const struct sockaddr_storage *ifss,
677 struct smbd_open_socket *s;
679 s = talloc(parent, struct smbd_open_socket);
685 s->fd = open_socket_in(SOCK_STREAM,
687 parent->sockets == NULL ? 0 : 2,
691 DEBUG(0,("smbd_open_once_socket: open_socket_in: "
692 "%s\n", strerror(errno)));
695 * We ignore an error here, as we've done before
700 /* ready to listen */
701 set_socket_options(s->fd, "SO_KEEPALIVE");
702 set_socket_options(s->fd, lp_socket_options());
704 /* Set server socket to
705 * non-blocking for the accept. */
706 set_blocking(s->fd, False);
708 if (listen(s->fd, SMBD_LISTEN_BACKLOG) == -1) {
709 DEBUG(0,("open_sockets_smbd: listen: "
710 "%s\n", strerror(errno)));
716 s->fde = tevent_add_fd(ev_ctx,
718 s->fd, TEVENT_FD_READ,
719 smbd_accept_connection,
722 DEBUG(0,("open_sockets_smbd: "
723 "tevent_add_fd: %s\n",
729 tevent_fd_set_close_fn(s->fde, smbd_open_socket_close_fn);
731 DLIST_ADD_END(parent->sockets, s, struct smbd_open_socket *);
736 /****************************************************************************
737 Open the socket communication.
738 ****************************************************************************/
740 static bool open_sockets_smbd(struct smbd_parent_context *parent,
741 struct tevent_context *ev_ctx,
742 struct messaging_context *msg_ctx,
743 const char *smb_ports)
745 int num_interfaces = iface_count();
748 unsigned dns_port = 0;
755 smbd_setup_sig_chld_handler(parent);
757 ports = lp_smb_ports();
759 /* use a reasonable default set of ports - listing on 445 and 139 */
761 ports = (const char **)str_list_make_v3(talloc_tos(), smb_ports, NULL);
764 for (j = 0; ports && ports[j]; j++) {
765 unsigned port = atoi(ports[j]);
767 if (port == 0 || port > 0xffff) {
768 exit_server_cleanly("Invalid port in the config or on "
769 "the commandline specified!");
773 if (lp_interfaces() && lp_bind_interfaces_only()) {
774 /* We have been given an interfaces line, and been
775 told to only bind to those interfaces. Create a
776 socket per interface and bind to only these.
779 /* Now open a listen socket for each of the
781 for(i = 0; i < num_interfaces; i++) {
782 const struct sockaddr_storage *ifss =
783 iface_n_sockaddr_storage(i);
785 DEBUG(0,("open_sockets_smbd: "
786 "interface %d has NULL IP address !\n",
791 for (j = 0; ports && ports[j]; j++) {
792 unsigned port = atoi(ports[j]);
794 /* Keep the first port for mDNS service
801 if (!smbd_open_one_socket(parent,
811 /* Just bind to 0.0.0.0 - accept connections
814 const char *sock_addr;
816 const char *sock_ptr;
819 sock_addr = "::,0.0.0.0";
821 sock_addr = "0.0.0.0";
824 for (sock_ptr=sock_addr;
825 next_token_talloc(talloc_tos(), &sock_ptr, &sock_tok, " \t,"); ) {
826 for (j = 0; ports && ports[j]; j++) {
827 struct sockaddr_storage ss;
828 unsigned port = atoi(ports[j]);
830 /* Keep the first port for mDNS service
837 /* open an incoming socket */
838 if (!interpret_string_addr(&ss, sock_tok,
839 AI_NUMERICHOST|AI_PASSIVE)) {
843 (void)smbd_open_one_socket(parent,
852 if (parent->sockets == NULL) {
853 DEBUG(0,("open_sockets_smbd: No "
854 "sockets available to bind to.\n"));
858 /* Setup the main smbd so that we can get messages. Note that
859 do this after starting listening. This is needed as when in
860 clustered mode, ctdb won't allow us to start doing database
861 operations until it has gone thru a full startup, which
862 includes checking to see that smbd is listening. */
864 if (!serverid_register(messaging_server_id(msg_ctx),
865 FLAG_MSG_GENERAL|FLAG_MSG_SMBD
866 |FLAG_MSG_PRINT_GENERAL
868 DEBUG(0, ("open_sockets_smbd: Failed to register "
869 "myself in serverid.tdb\n"));
873 /* Listen to messages */
875 messaging_register(msg_ctx, NULL, MSG_SHUTDOWN, msg_exit_server);
876 messaging_register(msg_ctx, ev_ctx, MSG_SMB_CONF_UPDATED,
877 smbd_parent_conf_updated);
878 messaging_register(msg_ctx, NULL, MSG_SMB_STAT_CACHE_DELETE,
879 smb_stat_cache_delete);
880 messaging_register(msg_ctx, NULL, MSG_DEBUG, smbd_msg_debug);
881 messaging_register(msg_ctx, ev_ctx, MSG_PRINTER_PCAP,
883 messaging_register(msg_ctx, NULL, MSG_SMB_BRL_VALIDATE,
885 messaging_register(msg_ctx, NULL, MSG_SMB_FORCE_TDIS,
886 smb_parent_force_tdis);
888 messaging_register(msg_ctx, NULL,
889 ID_CACHE_DELETE, smbd_parent_id_cache_delete);
890 messaging_register(msg_ctx, NULL,
891 ID_CACHE_KILL, smbd_parent_id_cache_kill);
893 #ifdef CLUSTER_SUPPORT
894 if (lp_clustering()) {
895 ctdbd_register_reconfigure(messaging_ctdbd_connection());
900 messaging_register(msg_ctx, NULL, MSG_SMB_INJECT_FAULT,
904 if (lp_multicast_dns_register() && (dns_port != 0)) {
905 #ifdef WITH_DNSSD_SUPPORT
906 smbd_setup_mdns_registration(ev_ctx,
909 #ifdef WITH_AVAHI_SUPPORT
912 avahi_conn = avahi_start_register(ev_ctx,
915 if (avahi_conn == NULL) {
916 DEBUG(10, ("avahi_start_register failed\n"));
926 handle stdin becoming readable when we are in --foreground mode
928 static void smbd_stdin_handler(struct tevent_context *ev,
929 struct tevent_fd *fde,
934 if (read(0, &c, 1) != 1) {
935 /* we have reached EOF on stdin, which means the
936 parent has exited. Shutdown the server */
937 exit_server_cleanly("EOF on stdin");
941 static void smbd_parent_loop(struct tevent_context *ev_ctx,
942 struct smbd_parent_context *parent)
944 /* now accept incoming connections - forking a new process
945 for each incoming connection */
946 DEBUG(2,("waiting for connections\n"));
949 TALLOC_CTX *frame = talloc_stackframe();
951 ret = tevent_loop_once(ev_ctx);
953 exit_server_cleanly("tevent_loop_once() error");
959 /* NOTREACHED return True; */
963 /****************************************************************************
964 Initialise connect, service and file structs.
965 ****************************************************************************/
967 static bool init_structs(void )
970 * Set the machine NETBIOS name if not already
971 * set from the config file.
983 static void smbd_parent_sig_term_handler(struct tevent_context *ev,
984 struct tevent_signal *se,
990 exit_server_cleanly("termination signal");
993 static void smbd_parent_sig_hup_handler(struct tevent_context *ev,
994 struct tevent_signal *se,
1000 struct smbd_parent_context *parent =
1001 talloc_get_type_abort(private_data,
1002 struct smbd_parent_context);
1004 change_to_root_user();
1005 DEBUG(1,("parent: Reloading services after SIGHUP\n"));
1006 reload_services(NULL, NULL, false);
1008 printing_subsystem_update(parent->ev_ctx, parent->msg_ctx, true);
1011 /****************************************************************************
1013 ****************************************************************************/
1015 /* Declare prototype for build_options() to avoid having to run it through
1016 mkproto.h. Mixing $(builddir) and $(srcdir) source files in the current
1017 prototype generation system is too complicated. */
1019 extern void build_options(bool screen);
1021 int main(int argc,const char *argv[])
1023 /* shall I run as a daemon */
1024 bool is_daemon = false;
1025 bool interactive = false;
1027 bool no_process_group = false;
1028 bool log_stdout = false;
1030 char *profile_level = NULL;
1033 bool print_build_options = False;
1038 OPT_NO_PROCESS_GROUP,
1041 struct poptOption long_options[] = {
1043 {"daemon", 'D', POPT_ARG_NONE, NULL, OPT_DAEMON, "Become a daemon (default)" },
1044 {"interactive", 'i', POPT_ARG_NONE, NULL, OPT_INTERACTIVE, "Run interactive (not a daemon)"},
1045 {"foreground", 'F', POPT_ARG_NONE, NULL, OPT_FORK, "Run daemon in foreground (for daemontools, etc.)" },
1046 {"no-process-group", '\0', POPT_ARG_NONE, NULL, OPT_NO_PROCESS_GROUP, "Don't create a new process group" },
1047 {"log-stdout", 'S', POPT_ARG_NONE, NULL, OPT_LOG_STDOUT, "Log to stdout" },
1048 {"build-options", 'b', POPT_ARG_NONE, NULL, 'b', "Print build options" },
1049 {"port", 'p', POPT_ARG_STRING, &ports, 0, "Listen on the specified ports"},
1050 {"profiling-level", 'P', POPT_ARG_STRING, &profile_level, 0, "Set profiling level","PROFILE_LEVEL"},
1052 POPT_COMMON_DYNCONFIG
1055 struct smbd_parent_context *parent = NULL;
1058 struct tevent_context *ev_ctx;
1059 struct messaging_context *msg_ctx;
1060 struct server_id server_id;
1061 struct tevent_signal *se;
1062 char *np_dir = NULL;
1063 static const struct smbd_shim smbd_shim_fns =
1065 .cancel_pending_lock_requests_by_fid = smbd_cancel_pending_lock_requests_by_fid,
1066 .send_stat_cache_delete_message = smbd_send_stat_cache_delete_message,
1067 .change_to_root_user = smbd_change_to_root_user,
1069 .contend_level2_oplocks_begin = smbd_contend_level2_oplocks_begin,
1070 .contend_level2_oplocks_end = smbd_contend_level2_oplocks_end,
1072 .become_root = smbd_become_root,
1073 .unbecome_root = smbd_unbecome_root,
1075 .exit_server = smbd_exit_server,
1076 .exit_server_cleanly = smbd_exit_server_cleanly,
1080 * Do this before any other talloc operation
1082 talloc_enable_null_tracking();
1083 frame = talloc_stackframe();
1085 setup_logging(argv[0], DEBUG_DEFAULT_STDOUT);
1089 set_smbd_shim(&smbd_shim_fns);
1091 smbd_init_globals();
1095 #ifdef HAVE_SET_AUTH_PARAMETERS
1096 set_auth_parameters(argc,argv);
1099 pc = poptGetContext("smbd", argc, argv, long_options, 0);
1100 while((opt = poptGetNextOpt(pc)) != -1) {
1105 case OPT_INTERACTIVE:
1111 case OPT_NO_PROCESS_GROUP:
1112 no_process_group = true;
1114 case OPT_LOG_STDOUT:
1118 print_build_options = True;
1121 d_fprintf(stderr, "\nInvalid option %s: %s\n\n",
1122 poptBadOption(pc, 0), poptStrerror(opt));
1123 poptPrintUsage(pc, stderr, 0);
1127 poptFreeContext(pc);
1135 setup_logging(argv[0], DEBUG_STDOUT);
1137 setup_logging(argv[0], DEBUG_FILE);
1140 if (print_build_options) {
1141 build_options(True); /* Display output to screen as well as debug */
1146 /* needed for SecureWare on SCO */
1150 set_remote_machine_name("smbd", False);
1152 if (interactive && (DEBUGLEVEL >= 9)) {
1153 talloc_enable_leak_report();
1156 if (log_stdout && Fork) {
1157 DEBUG(0,("ERROR: Can't log to stdout (-S) unless daemon is in foreground (-F) or interactive (-i)\n"));
1161 /* we want to re-seed early to prevent time delays causing
1162 client problems at a later date. (tridge) */
1163 generate_random_buffer(NULL, 0);
1165 /* get initial effective uid and gid */
1168 /* make absolutely sure we run as root - to handle cases where people
1169 are crazy enough to have it setuid */
1170 gain_root_privilege();
1171 gain_root_group_privilege();
1174 dump_core_setup("smbd", lp_logfile(talloc_tos()));
1176 /* we are never interested in SIGPIPE */
1177 BlockSignals(True,SIGPIPE);
1180 /* we are never interested in SIGFPE */
1181 BlockSignals(True,SIGFPE);
1184 #if defined(SIGUSR2)
1185 /* We are no longer interested in USR2 */
1186 BlockSignals(True,SIGUSR2);
1189 /* POSIX demands that signals are inherited. If the invoking process has
1190 * these signals masked, we will have problems, as we won't recieve them. */
1191 BlockSignals(False, SIGHUP);
1192 BlockSignals(False, SIGUSR1);
1193 BlockSignals(False, SIGTERM);
1195 /* Ensure we leave no zombies until we
1196 * correctly set up child handling below. */
1200 /* we want total control over the permissions on created files,
1201 so set our umask to 0 */
1206 DEBUG(0,("smbd version %s started.\n", samba_version_string()));
1207 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE));
1209 DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
1210 (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
1212 /* Output the build options to the debug log */
1213 build_options(False);
1215 if (sizeof(uint16) < 2 || sizeof(uint32) < 4) {
1216 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
1220 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1221 DEBUG(0, ("error opening config file '%s'\n", get_dyn_CONFIGFILE()));
1225 /* Init the security context and global current_user */
1229 * Initialize the event context. The event context needs to be
1230 * initialized before the messaging context, cause the messaging
1231 * context holds an event context.
1232 * FIXME: This should be s3_tevent_context_init()
1234 ev_ctx = server_event_context();
1235 if (ev_ctx == NULL) {
1240 * Init the messaging context
1241 * FIXME: This should only call messaging_init()
1243 msg_ctx = server_messaging_context();
1244 if (msg_ctx == NULL) {
1249 * Reloading of the printers will not work here as we don't have a
1250 * server info and rpc services set up. It will be called later.
1252 if (!reload_services(NULL, NULL, false)) {
1256 if (lp_server_role() == ROLE_ACTIVE_DIRECTORY_DC
1257 && !lp_parm_bool(-1, "server role check", "inhibit", false)) {
1258 DEBUG(0, ("server role = 'active directory domain controller' not compatible with running smbd standalone. \n"));
1259 DEBUGADD(0, ("You should start 'samba' instead, and it will control starting smbd if required\n"));
1263 /* ...NOTE... Log files are working from this point! */
1265 DEBUG(3,("loaded services\n"));
1270 if (!profile_setup(msg_ctx, False)) {
1271 DEBUG(0,("ERROR: failed to setup profiling\n"));
1274 if (profile_level != NULL) {
1275 int pl = atoi(profile_level);
1276 struct server_id src;
1278 DEBUG(1, ("setting profiling level: %s\n",profile_level));
1280 set_profile_level(pl, src);
1284 if (!is_daemon && !is_a_socket(0)) {
1286 DEBUG(0,("standard input is not a socket, assuming -D option\n"));
1289 * Setting is_daemon here prevents us from eventually calling
1290 * the open_sockets_inetd()
1296 if (is_daemon && !interactive) {
1297 DEBUG( 3, ( "Becoming a daemon.\n" ) );
1298 become_daemon(Fork, no_process_group, log_stdout);
1301 set_my_unique_id(serverid_get_random_unique_id());
1305 * If we're interactive we want to set our own process group for
1306 * signal management.
1308 if (interactive && !no_process_group)
1309 setpgid( (pid_t)0, (pid_t)0);
1312 if (!directory_exist(lp_lockdir()))
1313 mkdir(lp_lockdir(), 0755);
1315 if (!directory_exist(lp_piddir()))
1316 mkdir(lp_piddir(), 0755);
1319 pidfile_create(lp_piddir(), "smbd");
1321 status = reinit_after_fork(msg_ctx,
1324 if (!NT_STATUS_IS_OK(status)) {
1325 DEBUG(0,("reinit_after_fork() failed\n"));
1331 * Do not initialize the parent-child-pipe before becoming a
1332 * daemon: this is used to detect a died parent in the child
1335 status = init_before_fork();
1336 if (!NT_STATUS_IS_OK(status)) {
1337 DEBUG(0, ("init_before_fork failed: %s\n", nt_errstr(status)));
1342 parent = talloc_zero(ev_ctx, struct smbd_parent_context);
1344 exit_server("talloc(struct smbd_parent_context) failed");
1346 parent->interactive = interactive;
1347 parent->ev_ctx = ev_ctx;
1348 parent->msg_ctx = msg_ctx;
1351 se = tevent_add_signal(parent->ev_ctx,
1354 smbd_parent_sig_term_handler,
1357 exit_server("failed to setup SIGTERM handler");
1359 se = tevent_add_signal(parent->ev_ctx,
1362 smbd_parent_sig_hup_handler,
1365 exit_server("failed to setup SIGHUP handler");
1368 /* Setup all the TDB's - including CLEAR_IF_FIRST tdb's. */
1370 if (smbd_memcache() == NULL) {
1374 memcache_set_global(smbd_memcache());
1376 /* Initialise the password backed before the global_sam_sid
1377 to ensure that we fetch from ldap before we make a domain sid up */
1379 if(!initialize_password_db(false, ev_ctx))
1382 if (!secrets_init()) {
1383 DEBUG(0, ("ERROR: smbd can not open secrets.tdb\n"));
1387 if (lp_server_role() == ROLE_DOMAIN_BDC || lp_server_role() == ROLE_DOMAIN_PDC) {
1388 struct loadparm_context *lp_ctx = loadparm_init_s3(NULL, loadparm_s3_helpers());
1389 if (!open_schannel_session_store(NULL, lp_ctx)) {
1390 DEBUG(0,("ERROR: Samba cannot open schannel store for secured NETLOGON operations.\n"));
1393 TALLOC_FREE(lp_ctx);
1396 if(!get_global_sam_sid()) {
1397 DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
1401 server_id = messaging_server_id(msg_ctx);
1402 status = smbXsrv_version_global_init(&server_id);
1403 if (!NT_STATUS_IS_OK(status)) {
1407 status = smbXsrv_session_global_init();
1408 if (!NT_STATUS_IS_OK(status)) {
1412 status = smbXsrv_tcon_global_init();
1413 if (!NT_STATUS_IS_OK(status)) {
1417 if (!locking_init())
1420 if (!messaging_tdb_parent_init(ev_ctx)) {
1424 if (!smbd_parent_notify_init(NULL, msg_ctx, ev_ctx)) {
1428 if (!smbd_scavenger_init(NULL, msg_ctx, ev_ctx)) {
1432 if (!serverid_parent_init(ev_ctx)) {
1436 if (!W_ERROR_IS_OK(registry_init_full()))
1439 /* Open the share_info.tdb here, so we don't have to open
1440 after the fork on every single connection. This is a small
1441 performance improvment and reduces the total number of system
1443 if (!share_info_db_init()) {
1444 DEBUG(0,("ERROR: failed to load share info db.\n"));
1448 status = init_system_session_info();
1449 if (!NT_STATUS_IS_OK(status)) {
1450 DEBUG(1, ("ERROR: failed to setup system user info: %s.\n",
1451 nt_errstr(status)));
1455 if (!init_guest_info()) {
1456 DEBUG(0,("ERROR: failed to setup guest info.\n"));
1460 if (!file_init_global()) {
1461 DEBUG(0, ("ERROR: file_init_global() failed\n"));
1464 status = smbXsrv_open_global_init();
1465 if (!NT_STATUS_IS_OK(status)) {
1469 /* This MUST be done before start_epmd() because otherwise
1470 * start_epmd() forks and races against dcesrv_ep_setup() to
1471 * call directory_create_or_exist() */
1472 if (!directory_create_or_exist(lp_ncalrpc_dir(), geteuid(), 0755)) {
1473 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
1474 lp_ncalrpc_dir(), strerror(errno)));
1478 np_dir = talloc_asprintf(talloc_tos(), "%s/np", lp_ncalrpc_dir());
1480 DEBUG(0, ("%s: Out of memory\n", __location__));
1484 if (!directory_create_or_exist(np_dir, geteuid(), 0700)) {
1485 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
1486 np_dir, strerror(errno)));
1490 if (is_daemon && !interactive) {
1491 if (rpc_epmapper_daemon() == RPC_DAEMON_FORK) {
1492 start_epmd(ev_ctx, msg_ctx);
1496 if (!dcesrv_ep_setup(ev_ctx, msg_ctx)) {
1500 /* only start other daemons if we are running as a daemon
1501 * -- bad things will happen if smbd is launched via inetd
1502 * and we fork a copy of ourselves here */
1503 if (is_daemon && !interactive) {
1505 if (rpc_lsasd_daemon() == RPC_DAEMON_FORK) {
1506 start_lsasd(ev_ctx, msg_ctx);
1509 if (!lp__disable_spoolss() &&
1510 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED)) {
1511 bool bgq = lp_parm_bool(-1, "smbd", "backgroundqueue", true);
1513 if (!printing_subsystem_init(ev_ctx, msg_ctx, true, bgq)) {
1517 } else if (!lp__disable_spoolss() &&
1518 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED)) {
1519 if (!printing_subsystem_init(ev_ctx, msg_ctx, false, false)) {
1530 /* Started from inetd. fd 0 is the socket. */
1531 /* We will abort gracefully when the client or remote system
1535 /* close stdin, stdout (if not logging to it), but not stderr */
1536 close_low_fds(true, !debug_get_output_is_stdout(), false);
1543 smbd_setup_sig_chld_handler(parent);
1545 smbd_process(ev_ctx, msg_ctx, sock, true);
1547 exit_server_cleanly(NULL);
1551 if (!open_sockets_smbd(parent, ev_ctx, msg_ctx, ports))
1552 exit_server("open_sockets_smbd() failed");
1554 /* do a printer update now that all messaging has been set up,
1555 * before we allow clients to start connecting */
1556 if (!lp__disable_spoolss() &&
1557 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED)) {
1558 printing_subsystem_update(ev_ctx, msg_ctx, false);
1562 /* make sure we always have a valid stackframe */
1563 frame = talloc_stackframe();
1566 /* if we are running in the foreground then look for
1567 EOF on stdin, and exit if it happens. This allows
1568 us to die if the parent process dies
1569 Only do this on a pipe or socket, no other device.
1572 if (fstat(0, &st) != 0) {
1575 if (S_ISFIFO(st.st_mode) || S_ISSOCK(st.st_mode)) {
1576 tevent_add_fd(ev_ctx,
1585 smbd_parent_loop(ev_ctx, parent);
1587 exit_server_cleanly(NULL);