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"
32 #include "../lib/util/memcache.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 tevent_timer *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 tevent_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 tevent_context *event_ctx,
399 struct tevent_timer *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,("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 const struct sockaddr_storage *ifss,
676 struct smbd_open_socket *s;
678 s = talloc(parent, struct smbd_open_socket);
684 s->fd = open_socket_in(SOCK_STREAM,
686 parent->sockets == NULL ? 0 : 2,
690 DEBUG(0,("smbd_open_once_socket: open_socket_in: "
691 "%s\n", strerror(errno)));
694 * We ignore an error here, as we've done before
699 /* ready to listen */
700 set_socket_options(s->fd, "SO_KEEPALIVE");
701 set_socket_options(s->fd, lp_socket_options());
703 /* Set server socket to
704 * non-blocking for the accept. */
705 set_blocking(s->fd, False);
707 if (listen(s->fd, SMBD_LISTEN_BACKLOG) == -1) {
708 DEBUG(0,("open_sockets_smbd: listen: "
709 "%s\n", strerror(errno)));
715 s->fde = tevent_add_fd(ev_ctx,
717 s->fd, TEVENT_FD_READ,
718 smbd_accept_connection,
721 DEBUG(0,("open_sockets_smbd: "
722 "tevent_add_fd: %s\n",
728 tevent_fd_set_close_fn(s->fde, smbd_open_socket_close_fn);
730 DLIST_ADD_END(parent->sockets, s, struct smbd_open_socket *);
735 /****************************************************************************
736 Open the socket communication.
737 ****************************************************************************/
739 static bool open_sockets_smbd(struct smbd_parent_context *parent,
740 struct tevent_context *ev_ctx,
741 struct messaging_context *msg_ctx,
742 const char *smb_ports)
744 int num_interfaces = iface_count();
747 unsigned dns_port = 0;
754 smbd_setup_sig_chld_handler(parent);
756 ports = lp_smb_ports();
758 /* use a reasonable default set of ports - listing on 445 and 139 */
760 ports = (const char **)str_list_make_v3(talloc_tos(), smb_ports, NULL);
763 for (j = 0; ports && ports[j]; j++) {
764 unsigned port = atoi(ports[j]);
766 if (port == 0 || port > 0xffff) {
767 exit_server_cleanly("Invalid port in the config or on "
768 "the commandline specified!");
772 if (lp_interfaces() && lp_bind_interfaces_only()) {
773 /* We have been given an interfaces line, and been
774 told to only bind to those interfaces. Create a
775 socket per interface and bind to only these.
778 /* Now open a listen socket for each of the
780 for(i = 0; i < num_interfaces; i++) {
781 const struct sockaddr_storage *ifss =
782 iface_n_sockaddr_storage(i);
784 DEBUG(0,("open_sockets_smbd: "
785 "interface %d has NULL IP address !\n",
790 for (j = 0; ports && ports[j]; j++) {
791 unsigned port = atoi(ports[j]);
793 /* Keep the first port for mDNS service
800 if (!smbd_open_one_socket(parent,
809 /* Just bind to 0.0.0.0 - accept connections
812 const char *sock_addr;
814 const char *sock_ptr;
817 sock_addr = "::,0.0.0.0";
819 sock_addr = "0.0.0.0";
822 for (sock_ptr=sock_addr;
823 next_token_talloc(talloc_tos(), &sock_ptr, &sock_tok, " \t,"); ) {
824 for (j = 0; ports && ports[j]; j++) {
825 struct sockaddr_storage ss;
826 unsigned port = atoi(ports[j]);
828 /* Keep the first port for mDNS service
835 /* open an incoming socket */
836 if (!interpret_string_addr(&ss, sock_tok,
837 AI_NUMERICHOST|AI_PASSIVE)) {
842 * If we fail to open any sockets
843 * in this loop the parent-sockets == NULL
844 * case below will prevent us from starting.
847 (void)smbd_open_one_socket(parent,
855 if (parent->sockets == NULL) {
856 DEBUG(0,("open_sockets_smbd: No "
857 "sockets available to bind to.\n"));
861 /* Setup the main smbd so that we can get messages. Note that
862 do this after starting listening. This is needed as when in
863 clustered mode, ctdb won't allow us to start doing database
864 operations until it has gone thru a full startup, which
865 includes checking to see that smbd is listening. */
867 if (!serverid_register(messaging_server_id(msg_ctx),
868 FLAG_MSG_GENERAL|FLAG_MSG_SMBD
869 |FLAG_MSG_PRINT_GENERAL
871 DEBUG(0, ("open_sockets_smbd: Failed to register "
872 "myself in serverid.tdb\n"));
876 /* Listen to messages */
878 messaging_register(msg_ctx, NULL, MSG_SHUTDOWN, msg_exit_server);
879 messaging_register(msg_ctx, ev_ctx, MSG_SMB_CONF_UPDATED,
880 smbd_parent_conf_updated);
881 messaging_register(msg_ctx, NULL, MSG_SMB_STAT_CACHE_DELETE,
882 smb_stat_cache_delete);
883 messaging_register(msg_ctx, NULL, MSG_DEBUG, smbd_msg_debug);
884 messaging_register(msg_ctx, ev_ctx, MSG_PRINTER_PCAP,
886 messaging_register(msg_ctx, NULL, MSG_SMB_BRL_VALIDATE,
888 messaging_register(msg_ctx, NULL, MSG_SMB_FORCE_TDIS,
889 smb_parent_force_tdis);
891 messaging_register(msg_ctx, NULL,
892 ID_CACHE_DELETE, smbd_parent_id_cache_delete);
893 messaging_register(msg_ctx, NULL,
894 ID_CACHE_KILL, smbd_parent_id_cache_kill);
896 #ifdef CLUSTER_SUPPORT
897 if (lp_clustering()) {
898 ctdbd_register_reconfigure(messaging_ctdbd_connection());
903 messaging_register(msg_ctx, NULL, MSG_SMB_INJECT_FAULT,
907 if (lp_multicast_dns_register() && (dns_port != 0)) {
908 #ifdef WITH_DNSSD_SUPPORT
909 smbd_setup_mdns_registration(ev_ctx,
912 #ifdef WITH_AVAHI_SUPPORT
915 avahi_conn = avahi_start_register(ev_ctx,
918 if (avahi_conn == NULL) {
919 DEBUG(10, ("avahi_start_register failed\n"));
929 handle stdin becoming readable when we are in --foreground mode
931 static void smbd_stdin_handler(struct tevent_context *ev,
932 struct tevent_fd *fde,
937 if (read(0, &c, 1) != 1) {
938 /* we have reached EOF on stdin, which means the
939 parent has exited. Shutdown the server */
940 exit_server_cleanly("EOF on stdin");
944 static void smbd_parent_loop(struct tevent_context *ev_ctx,
945 struct smbd_parent_context *parent)
947 /* now accept incoming connections - forking a new process
948 for each incoming connection */
949 DEBUG(2,("waiting for connections\n"));
952 TALLOC_CTX *frame = talloc_stackframe();
954 ret = tevent_loop_once(ev_ctx);
956 exit_server_cleanly("tevent_loop_once() error");
962 /* NOTREACHED return True; */
966 /****************************************************************************
967 Initialise connect, service and file structs.
968 ****************************************************************************/
970 static bool init_structs(void )
973 * Set the machine NETBIOS name if not already
974 * set from the config file.
986 static void smbd_parent_sig_term_handler(struct tevent_context *ev,
987 struct tevent_signal *se,
993 exit_server_cleanly("termination signal");
996 static void smbd_parent_sig_hup_handler(struct tevent_context *ev,
997 struct tevent_signal *se,
1003 struct smbd_parent_context *parent =
1004 talloc_get_type_abort(private_data,
1005 struct smbd_parent_context);
1007 change_to_root_user();
1008 DEBUG(1,("parent: Reloading services after SIGHUP\n"));
1009 reload_services(NULL, NULL, false);
1011 printing_subsystem_update(parent->ev_ctx, parent->msg_ctx, true);
1014 /****************************************************************************
1016 ****************************************************************************/
1018 /* Declare prototype for build_options() to avoid having to run it through
1019 mkproto.h. Mixing $(builddir) and $(srcdir) source files in the current
1020 prototype generation system is too complicated. */
1022 extern void build_options(bool screen);
1024 int main(int argc,const char *argv[])
1026 /* shall I run as a daemon */
1027 bool is_daemon = false;
1028 bool interactive = false;
1030 bool no_process_group = false;
1031 bool log_stdout = false;
1033 char *profile_level = NULL;
1036 bool print_build_options = False;
1041 OPT_NO_PROCESS_GROUP,
1044 struct poptOption long_options[] = {
1046 {"daemon", 'D', POPT_ARG_NONE, NULL, OPT_DAEMON, "Become a daemon (default)" },
1047 {"interactive", 'i', POPT_ARG_NONE, NULL, OPT_INTERACTIVE, "Run interactive (not a daemon)"},
1048 {"foreground", 'F', POPT_ARG_NONE, NULL, OPT_FORK, "Run daemon in foreground (for daemontools, etc.)" },
1049 {"no-process-group", '\0', POPT_ARG_NONE, NULL, OPT_NO_PROCESS_GROUP, "Don't create a new process group" },
1050 {"log-stdout", 'S', POPT_ARG_NONE, NULL, OPT_LOG_STDOUT, "Log to stdout" },
1051 {"build-options", 'b', POPT_ARG_NONE, NULL, 'b', "Print build options" },
1052 {"port", 'p', POPT_ARG_STRING, &ports, 0, "Listen on the specified ports"},
1053 {"profiling-level", 'P', POPT_ARG_STRING, &profile_level, 0, "Set profiling level","PROFILE_LEVEL"},
1055 POPT_COMMON_DYNCONFIG
1058 struct smbd_parent_context *parent = NULL;
1061 struct tevent_context *ev_ctx;
1062 struct messaging_context *msg_ctx;
1063 struct server_id server_id;
1064 struct tevent_signal *se;
1065 char *np_dir = NULL;
1066 static const struct smbd_shim smbd_shim_fns =
1068 .cancel_pending_lock_requests_by_fid = smbd_cancel_pending_lock_requests_by_fid,
1069 .send_stat_cache_delete_message = smbd_send_stat_cache_delete_message,
1070 .change_to_root_user = smbd_change_to_root_user,
1072 .contend_level2_oplocks_begin = smbd_contend_level2_oplocks_begin,
1073 .contend_level2_oplocks_end = smbd_contend_level2_oplocks_end,
1075 .become_root = smbd_become_root,
1076 .unbecome_root = smbd_unbecome_root,
1078 .exit_server = smbd_exit_server,
1079 .exit_server_cleanly = smbd_exit_server_cleanly,
1083 * Do this before any other talloc operation
1085 talloc_enable_null_tracking();
1086 frame = talloc_stackframe();
1088 setup_logging(argv[0], DEBUG_DEFAULT_STDOUT);
1092 set_smbd_shim(&smbd_shim_fns);
1094 smbd_init_globals();
1098 #ifdef HAVE_SET_AUTH_PARAMETERS
1099 set_auth_parameters(argc,argv);
1102 pc = poptGetContext("smbd", argc, argv, long_options, 0);
1103 while((opt = poptGetNextOpt(pc)) != -1) {
1108 case OPT_INTERACTIVE:
1114 case OPT_NO_PROCESS_GROUP:
1115 no_process_group = true;
1117 case OPT_LOG_STDOUT:
1121 print_build_options = True;
1124 d_fprintf(stderr, "\nInvalid option %s: %s\n\n",
1125 poptBadOption(pc, 0), poptStrerror(opt));
1126 poptPrintUsage(pc, stderr, 0);
1130 poptFreeContext(pc);
1138 setup_logging(argv[0], DEBUG_STDOUT);
1140 setup_logging(argv[0], DEBUG_FILE);
1143 if (print_build_options) {
1144 build_options(True); /* Display output to screen as well as debug */
1149 /* needed for SecureWare on SCO */
1153 set_remote_machine_name("smbd", False);
1155 if (interactive && (DEBUGLEVEL >= 9)) {
1156 talloc_enable_leak_report();
1159 if (log_stdout && Fork) {
1160 DEBUG(0,("ERROR: Can't log to stdout (-S) unless daemon is in foreground (-F) or interactive (-i)\n"));
1164 /* we want to re-seed early to prevent time delays causing
1165 client problems at a later date. (tridge) */
1166 generate_random_buffer(NULL, 0);
1168 /* get initial effective uid and gid */
1171 /* make absolutely sure we run as root - to handle cases where people
1172 are crazy enough to have it setuid */
1173 gain_root_privilege();
1174 gain_root_group_privilege();
1177 dump_core_setup("smbd", lp_logfile(talloc_tos()));
1179 /* we are never interested in SIGPIPE */
1180 BlockSignals(True,SIGPIPE);
1183 /* we are never interested in SIGFPE */
1184 BlockSignals(True,SIGFPE);
1187 #if defined(SIGUSR2)
1188 /* We are no longer interested in USR2 */
1189 BlockSignals(True,SIGUSR2);
1192 /* POSIX demands that signals are inherited. If the invoking process has
1193 * these signals masked, we will have problems, as we won't recieve them. */
1194 BlockSignals(False, SIGHUP);
1195 BlockSignals(False, SIGUSR1);
1196 BlockSignals(False, SIGTERM);
1198 /* Ensure we leave no zombies until we
1199 * correctly set up child handling below. */
1203 /* we want total control over the permissions on created files,
1204 so set our umask to 0 */
1209 DEBUG(0,("smbd version %s started.\n", samba_version_string()));
1210 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE));
1212 DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
1213 (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
1215 /* Output the build options to the debug log */
1216 build_options(False);
1218 if (sizeof(uint16) < 2 || sizeof(uint32) < 4) {
1219 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
1223 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1224 DEBUG(0, ("error opening config file '%s'\n", get_dyn_CONFIGFILE()));
1228 /* Init the security context and global current_user */
1232 * Initialize the event context. The event context needs to be
1233 * initialized before the messaging context, cause the messaging
1234 * context holds an event context.
1235 * FIXME: This should be s3_tevent_context_init()
1237 ev_ctx = server_event_context();
1238 if (ev_ctx == NULL) {
1243 * Init the messaging context
1244 * FIXME: This should only call messaging_init()
1246 msg_ctx = server_messaging_context();
1247 if (msg_ctx == NULL) {
1252 * Reloading of the printers will not work here as we don't have a
1253 * server info and rpc services set up. It will be called later.
1255 if (!reload_services(NULL, NULL, false)) {
1259 if (lp_server_role() == ROLE_ACTIVE_DIRECTORY_DC
1260 && !lp_parm_bool(-1, "server role check", "inhibit", false)) {
1261 DEBUG(0, ("server role = 'active directory domain controller' not compatible with running smbd standalone. \n"));
1262 DEBUGADD(0, ("You should start 'samba' instead, and it will control starting smbd if required\n"));
1266 /* ...NOTE... Log files are working from this point! */
1268 DEBUG(3,("loaded services\n"));
1273 if (!profile_setup(msg_ctx, False)) {
1274 DEBUG(0,("ERROR: failed to setup profiling\n"));
1277 if (profile_level != NULL) {
1278 int pl = atoi(profile_level);
1279 struct server_id src;
1281 DEBUG(1, ("setting profiling level: %s\n",profile_level));
1283 set_profile_level(pl, src);
1287 if (!is_daemon && !is_a_socket(0)) {
1289 DEBUG(0,("standard input is not a socket, assuming -D option\n"));
1292 * Setting is_daemon here prevents us from eventually calling
1293 * the open_sockets_inetd()
1299 if (is_daemon && !interactive) {
1300 DEBUG( 3, ( "Becoming a daemon.\n" ) );
1301 become_daemon(Fork, no_process_group, log_stdout);
1304 set_my_unique_id(serverid_get_random_unique_id());
1308 * If we're interactive we want to set our own process group for
1309 * signal management.
1311 if (interactive && !no_process_group)
1312 setpgid( (pid_t)0, (pid_t)0);
1315 if (!directory_exist(lp_lockdir()))
1316 mkdir(lp_lockdir(), 0755);
1318 if (!directory_exist(lp_piddir()))
1319 mkdir(lp_piddir(), 0755);
1322 pidfile_create(lp_piddir(), "smbd");
1324 status = reinit_after_fork(msg_ctx,
1327 if (!NT_STATUS_IS_OK(status)) {
1328 exit_daemon("reinit_after_fork() failed", map_errno_from_nt_status(status));
1333 * Do not initialize the parent-child-pipe before becoming a
1334 * daemon: this is used to detect a died parent in the child
1337 status = init_before_fork();
1338 if (!NT_STATUS_IS_OK(status)) {
1339 exit_daemon(nt_errstr(status), map_errno_from_nt_status(status));
1343 parent = talloc_zero(ev_ctx, struct smbd_parent_context);
1345 exit_server("talloc(struct smbd_parent_context) failed");
1347 parent->interactive = interactive;
1348 parent->ev_ctx = ev_ctx;
1349 parent->msg_ctx = msg_ctx;
1352 se = tevent_add_signal(parent->ev_ctx,
1355 smbd_parent_sig_term_handler,
1358 exit_server("failed to setup SIGTERM handler");
1360 se = tevent_add_signal(parent->ev_ctx,
1363 smbd_parent_sig_hup_handler,
1366 exit_server("failed to setup SIGHUP handler");
1369 /* Setup all the TDB's - including CLEAR_IF_FIRST tdb's. */
1371 if (smbd_memcache() == NULL) {
1372 exit_daemon("no memcache available", EACCES);
1375 memcache_set_global(smbd_memcache());
1377 /* Initialise the password backed before the global_sam_sid
1378 to ensure that we fetch from ldap before we make a domain sid up */
1380 if(!initialize_password_db(false, ev_ctx))
1383 if (!secrets_init()) {
1384 exit_daemon("smbd can not open secrets.tdb", EACCES);
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 exit_daemon("ERROR: Samba cannot open schannel store for secured NETLOGON operations.", EACCES);
1392 TALLOC_FREE(lp_ctx);
1395 if(!get_global_sam_sid()) {
1396 exit_daemon("Samba cannot create a SAM SID", EACCES);
1399 server_id = messaging_server_id(msg_ctx);
1400 status = smbXsrv_version_global_init(&server_id);
1401 if (!NT_STATUS_IS_OK(status)) {
1402 exit_daemon("Samba cannot init server context", EACCES);
1405 status = smbXsrv_session_global_init();
1406 if (!NT_STATUS_IS_OK(status)) {
1407 exit_daemon("Samba cannot init session context", EACCES);
1410 status = smbXsrv_tcon_global_init();
1411 if (!NT_STATUS_IS_OK(status)) {
1412 exit_daemon("Samba cannot init tcon context", EACCES);
1415 if (!locking_init())
1416 exit_daemon("Samba cannot init locking", EACCES);
1418 if (!messaging_tdb_parent_init(ev_ctx)) {
1419 exit_daemon("Samba cannot init TDB messaging", EACCES);
1422 if (!smbd_parent_notify_init(NULL, msg_ctx, ev_ctx)) {
1423 exit_daemon("Samba cannot init notification", EACCES);
1426 if (!smbd_scavenger_init(NULL, msg_ctx, ev_ctx)) {
1427 exit_daemon("Samba cannot init scavenging", EACCES);
1430 if (!serverid_parent_init(ev_ctx)) {
1431 exit_daemon("Samba cannot init server id", EACCES);
1434 if (!W_ERROR_IS_OK(registry_init_full()))
1435 exit_daemon("Samba cannot init registry", EACCES);
1437 /* Open the share_info.tdb here, so we don't have to open
1438 after the fork on every single connection. This is a small
1439 performance improvment and reduces the total number of system
1441 if (!share_info_db_init()) {
1442 exit_daemon("ERROR: failed to load share info db.", EACCES);
1445 status = init_system_session_info();
1446 if (!NT_STATUS_IS_OK(status)) {
1447 DEBUG(1, ("ERROR: failed to setup system user info: %s.\n",
1448 nt_errstr(status)));
1452 if (!init_guest_info()) {
1453 DEBUG(0,("ERROR: failed to setup guest info.\n"));
1457 if (!file_init_global()) {
1458 DEBUG(0, ("ERROR: file_init_global() failed\n"));
1461 status = smbXsrv_open_global_init();
1462 if (!NT_STATUS_IS_OK(status)) {
1463 exit_daemon("Samba cannot init global open", map_errno_from_nt_status(status));
1466 /* This MUST be done before start_epmd() because otherwise
1467 * start_epmd() forks and races against dcesrv_ep_setup() to
1468 * call directory_create_or_exist() */
1469 if (!directory_create_or_exist(lp_ncalrpc_dir(), geteuid(), 0755)) {
1470 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
1471 lp_ncalrpc_dir(), strerror(errno)));
1475 np_dir = talloc_asprintf(talloc_tos(), "%s/np", lp_ncalrpc_dir());
1477 DEBUG(0, ("%s: Out of memory\n", __location__));
1481 if (!directory_create_or_exist_strict(np_dir, geteuid(), 0700)) {
1482 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
1483 np_dir, strerror(errno)));
1487 if (is_daemon && !interactive) {
1488 if (rpc_epmapper_daemon() == RPC_DAEMON_FORK) {
1489 start_epmd(ev_ctx, msg_ctx);
1493 if (!dcesrv_ep_setup(ev_ctx, msg_ctx)) {
1494 exit_daemon("Samba cannot setup ep pipe", EACCES);
1497 if (is_daemon && !interactive) {
1498 daemon_ready("smbd");
1501 /* only start other daemons if we are running as a daemon
1502 * -- bad things will happen if smbd is launched via inetd
1503 * and we fork a copy of ourselves here */
1504 if (is_daemon && !interactive) {
1506 if (rpc_lsasd_daemon() == RPC_DAEMON_FORK) {
1507 start_lsasd(ev_ctx, msg_ctx);
1510 if (!lp__disable_spoolss() &&
1511 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED)) {
1512 bool bgq = lp_parm_bool(-1, "smbd", "backgroundqueue", true);
1514 if (!printing_subsystem_init(ev_ctx, msg_ctx, true, bgq)) {
1515 exit_daemon("Samba failed to init printing subsystem", EACCES);
1518 } else if (!lp__disable_spoolss() &&
1519 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED)) {
1520 if (!printing_subsystem_init(ev_ctx, msg_ctx, false, false)) {
1531 /* Started from inetd. fd 0 is the socket. */
1532 /* We will abort gracefully when the client or remote system
1536 /* close stdin, stdout (if not logging to it), but not stderr */
1537 close_low_fds(true, !debug_get_output_is_stdout(), false);
1544 smbd_setup_sig_chld_handler(parent);
1546 smbd_process(ev_ctx, msg_ctx, sock, true);
1548 exit_server_cleanly(NULL);
1552 if (!open_sockets_smbd(parent, ev_ctx, msg_ctx, ports))
1553 exit_server("open_sockets_smbd() failed");
1555 /* do a printer update now that all messaging has been set up,
1556 * before we allow clients to start connecting */
1557 if (!lp__disable_spoolss() &&
1558 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED)) {
1559 printing_subsystem_update(ev_ctx, msg_ctx, false);
1563 /* make sure we always have a valid stackframe */
1564 frame = talloc_stackframe();
1567 /* if we are running in the foreground then look for
1568 EOF on stdin, and exit if it happens. This allows
1569 us to die if the parent process dies
1570 Only do this on a pipe or socket, no other device.
1573 if (fstat(0, &st) != 0) {
1576 if (S_ISFIFO(st.st_mode) || S_ISSOCK(st.st_mode)) {
1577 tevent_add_fd(ev_ctx,
1586 smbd_parent_loop(ev_ctx, parent);
1588 exit_server_cleanly(NULL);