2 Unix SMB/CIFS implementation.
4 Main SMB server routines
6 Copyright (C) Andrew Tridgell 1992-2005
7 Copyright (C) Martin Pool 2002
8 Copyright (C) Jelmer Vernooij 2002
9 Copyright (C) James J Myers 2003 <myersjj@samba.org>
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>.
26 #include "lib/events/events.h"
28 #include "lib/cmdline/popt_common.h"
29 #include "system/dir.h"
30 #include "system/filesys.h"
31 #include "ldb/include/ldb.h"
32 #include "registry/registry.h"
33 #include "ntvfs/ntvfs.h"
34 #include "ntptr/ntptr.h"
35 #include "auth/gensec/gensec.h"
36 #include "smbd/process_model.h"
37 #include "smbd/service.h"
38 #include "param/secrets.h"
39 #include "smbd/pidfile.h"
40 #include "param/param.h"
41 #include "dsdb/samdb/samdb.h"
42 #include "auth/session.h"
43 #include "lib/messaging/irpc.h"
44 #include "librpc/gen_ndr/ndr_irpc.h"
45 #include "cluster/cluster.h"
48 recursively delete a directory tree
50 static void recursive_delete(const char *path)
60 for (de=readdir(dir);de;de=readdir(dir)) {
64 if (ISDOT(de->d_name) || ISDOTDOT(de->d_name)) {
68 fname = talloc_asprintf(path, "%s/%s", path, de->d_name);
69 if (stat(fname, &st) != 0) {
72 if (S_ISDIR(st.st_mode)) {
73 recursive_delete(fname);
77 if (unlink(fname) != 0) {
78 DEBUG(0,("Unabled to delete '%s' - %s\n",
79 fname, strerror(errno)));
80 smb_panic("unable to cleanup tmp files");
88 cleanup temporary files. This is the new alternative to
89 TDB_CLEAR_IF_FIRST. Unfortunately TDB_CLEAR_IF_FIRST is not
90 efficient on unix systems due to the lack of scaling of the byte
91 range locking system. So instead of putting the burden on tdb to
92 cleanup tmp files, this function deletes them.
94 static void cleanup_tmp_files(struct loadparm_context *lp_ctx)
97 TALLOC_CTX *mem_ctx = talloc_new(NULL);
99 path = smbd_tmp_path(mem_ctx, lp_ctx, NULL);
101 recursive_delete(path);
102 talloc_free(mem_ctx);
105 static void sig_hup(int sig)
107 debug_schedule_reopen_logs();
110 static void sig_term(int sig)
113 static int done_sigterm;
114 if (done_sigterm == 0 && getpgrp() == getpid()) {
115 DEBUG(0,("SIGTERM: killing children\n"));
117 kill(-getpgrp(), SIGTERM);
120 DEBUG(0,("Exiting pid %d on SIGTERM\n", (int)getpid()));
127 static void setup_signals(void)
129 /* we are never interested in SIGPIPE */
130 BlockSignals(true,SIGPIPE);
133 /* we are never interested in SIGFPE */
134 BlockSignals(true,SIGFPE);
137 /* We are no longer interested in USR1 */
138 BlockSignals(true, SIGUSR1);
141 /* We are no longer interested in USR2 */
142 BlockSignals(true,SIGUSR2);
145 /* POSIX demands that signals are inherited. If the invoking process has
146 * these signals masked, we will have problems, as we won't recieve them. */
147 BlockSignals(false, SIGHUP);
148 BlockSignals(false, SIGTERM);
150 CatchSignal(SIGHUP, sig_hup);
151 CatchSignal(SIGTERM, sig_term);
157 static void server_stdin_handler(struct tevent_context *event_ctx, struct tevent_fd *fde,
158 uint16_t flags, void *private_data)
160 const char *binary_name = (const char *)private_data;
162 if (read(0, &c, 1) == 0) {
163 DEBUG(0,("%s: EOF on stdin - terminating\n", binary_name));
165 if (getpgrp() == getpid()) {
166 DEBUG(0,("Sending SIGTERM from pid %d\n", (int)getpid()));
167 kill(-getpgrp(), SIGTERM);
175 die if the user selected maximum runtime is exceeded
177 _NORETURN_ static void max_runtime_handler(struct tevent_context *ev,
178 struct tevent_timer *te,
179 struct timeval t, void *private_data)
181 const char *binary_name = (const char *)private_data;
182 DEBUG(0,("%s: maximum runtime exceeded - terminating\n", binary_name));
187 pre-open the sam ldb to ensure the schema has been loaded. This
188 saves a lot of time in child processes
190 static void prime_samdb_schema(struct tevent_context *event_ctx)
192 TALLOC_CTX *samdb_context;
193 samdb_context = talloc_new(event_ctx);
194 samdb_connect(samdb_context, event_ctx, cmdline_lp_ctx, system_session(samdb_context, cmdline_lp_ctx));
195 talloc_free(samdb_context);
200 called when a fatal condition occurs in a child task
202 static NTSTATUS samba_terminate(struct irpc_message *msg,
203 struct samba_terminate *r)
205 DEBUG(0,("samba_terminate: %s\n", r->in.reason));
210 setup messaging for the top level samba (parent) task
212 static NTSTATUS setup_parent_messaging(struct tevent_context *event_ctx,
213 struct loadparm_context *lp_ctx)
215 struct messaging_context *msg;
218 msg = messaging_init(talloc_autofree_context(),
219 lp_messaging_path(event_ctx, lp_ctx),
220 cluster_id(0, SAMBA_PARENT_TASKID),
221 lp_iconv_convenience(lp_ctx),
223 NT_STATUS_HAVE_NO_MEMORY(msg);
225 irpc_add_name(msg, "samba");
227 status = IRPC_REGISTER(msg, irpc, SAMBA_TERMINATE,
228 samba_terminate, NULL);
238 static int binary_smbd_main(const char *binary_name, int argc, const char *argv[])
240 bool opt_daemon = false;
241 bool opt_interactive = false;
244 extern NTSTATUS server_service_wrepl_init(void);
245 extern NTSTATUS server_service_kdc_init(void);
246 extern NTSTATUS server_service_ldap_init(void);
247 extern NTSTATUS server_service_web_init(void);
248 extern NTSTATUS server_service_ldap_init(void);
249 extern NTSTATUS server_service_winbind_init(void);
250 extern NTSTATUS server_service_nbtd_init(void);
251 extern NTSTATUS server_service_auth_init(void);
252 extern NTSTATUS server_service_cldapd_init(void);
253 extern NTSTATUS server_service_smb_init(void);
254 extern NTSTATUS server_service_drepl_init(void);
255 extern NTSTATUS server_service_kcc_init(void);
256 extern NTSTATUS server_service_rpc_init(void);
257 extern NTSTATUS server_service_ntp_signd_init(void);
258 extern NTSTATUS server_service_samba3_smb_init(void);
259 init_module_fn static_init[] = { STATIC_service_MODULES };
260 init_module_fn *shared_init;
261 struct tevent_context *event_ctx;
262 uint16_t stdin_event_flags;
264 const char *model = "standard";
271 struct poptOption long_options[] = {
273 {"daemon", 'D', POPT_ARG_NONE, NULL, OPT_DAEMON,
274 "Become a daemon (default)", NULL },
275 {"interactive", 'i', POPT_ARG_NONE, NULL, OPT_INTERACTIVE,
276 "Run interactive (not a daemon)", NULL},
277 {"model", 'M', POPT_ARG_STRING, NULL, OPT_PROCESS_MODEL,
278 "Select process model", "MODEL"},
279 {"maximum-runtime",0, POPT_ARG_INT, &max_runtime, 0,
280 "set maximum runtime of the server process, till autotermination", "seconds"},
286 pc = poptGetContext(binary_name, argc, argv, long_options, 0);
287 while((opt = poptGetNextOpt(pc)) != -1) {
292 case OPT_INTERACTIVE:
293 opt_interactive = true;
295 case OPT_PROCESS_MODEL:
296 model = poptGetOptArg(pc);
299 fprintf(stderr, "\nInvalid option %s: %s\n\n",
300 poptBadOption(pc, 0), poptStrerror(opt));
301 poptPrintUsage(pc, stderr, 0);
306 if (opt_daemon && opt_interactive) {
307 fprintf(stderr,"\nERROR: "
308 "Option -i|--interactive is not allowed together with -D|--daemon\n\n");
309 poptPrintUsage(pc, stderr, 0);
311 } else if (!opt_interactive) {
312 /* default is --daemon */
318 setup_logging(binary_name, opt_interactive?DEBUG_STDOUT:DEBUG_FILE);
321 /* we want total control over the permissions on created files,
322 so set our umask to 0 */
325 DEBUG(0,("%s version %s started.\n", binary_name, SAMBA_VERSION_STRING));
326 DEBUGADD(0,("Copyright Andrew Tridgell and the Samba Team 1992-2009\n"));
328 if (sizeof(uint16_t) < 2 || sizeof(uint32_t) < 4 || sizeof(uint64_t) < 8) {
329 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
330 DEBUGADD(0,("sizeof(uint16_t) = %u, sizeof(uint32_t) %u, sizeof(uint64_t) = %u\n",
331 (unsigned int)sizeof(uint16_t), (unsigned int)sizeof(uint32_t), (unsigned int)sizeof(uint64_t)));
336 DEBUG(3,("Becoming a daemon.\n"));
337 become_daemon(true, false);
340 cleanup_tmp_files(cmdline_lp_ctx);
342 if (!directory_exist(lp_lockdir(cmdline_lp_ctx))) {
343 mkdir(lp_lockdir(cmdline_lp_ctx), 0755);
346 pidfile_create(lp_piddir(cmdline_lp_ctx), binary_name);
348 /* Do *not* remove this, until you have removed
349 * passdb/secrets.c, and proved that Samba still builds... */
350 /* Setup the SECRETS subsystem */
351 if (secrets_init(talloc_autofree_context(), cmdline_lp_ctx) == NULL) {
355 gensec_init(cmdline_lp_ctx); /* FIXME: */
357 ntptr_init(cmdline_lp_ctx); /* FIXME: maybe run this in the initialization function
358 of the spoolss RPC server instead? */
360 ntvfs_init(cmdline_lp_ctx); /* FIXME: maybe run this in the initialization functions
361 of the SMB[,2] server instead? */
363 process_model_init(cmdline_lp_ctx);
365 shared_init = load_samba_modules(NULL, cmdline_lp_ctx, "service");
367 run_init_functions(static_init);
368 run_init_functions(shared_init);
370 talloc_free(shared_init);
372 /* the event context is the top level structure in smbd. Everything else
373 should hang off that */
374 event_ctx = s4_event_context_init(talloc_autofree_context());
376 if (event_ctx == NULL) {
377 DEBUG(0,("Initializing event context failed\n"));
381 if (opt_interactive) {
382 /* terminate when stdin goes away */
383 stdin_event_flags = TEVENT_FD_READ;
385 /* stay alive forever */
386 stdin_event_flags = 0;
389 /* catch EOF on stdin */
391 signal(SIGTTIN, SIG_IGN);
393 tevent_add_fd(event_ctx, event_ctx, 0, stdin_event_flags,
394 server_stdin_handler,
395 discard_const(binary_name));
398 tevent_add_timer(event_ctx, event_ctx,
399 timeval_current_ofs(max_runtime, 0),
401 discard_const(binary_name));
404 prime_samdb_schema(event_ctx);
406 status = setup_parent_messaging(event_ctx, cmdline_lp_ctx);
407 if (!NT_STATUS_IS_OK(status)) {
408 DEBUG(0,("Failed to setup parent messaging - %s\n", nt_errstr(status)));
412 DEBUG(0,("%s: using '%s' process model\n", binary_name, model));
413 status = server_service_startup(event_ctx, cmdline_lp_ctx, model,
414 lp_server_services(cmdline_lp_ctx));
415 if (!NT_STATUS_IS_OK(status)) {
416 DEBUG(0,("Starting Services failed - %s\n", nt_errstr(status)));
420 /* wait for events - this is where smbd sits for most of its
422 tevent_loop_wait(event_ctx);
424 /* as everything hangs off this event context, freeing it
425 should initiate a clean shutdown of all services */
426 talloc_free(event_ctx);
431 int main(int argc, const char *argv[])
433 return binary_smbd_main("samba", argc, argv);