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 "cluster/ctdb/ctdb_cluster.h"
41 #include "param/param.h"
44 recursively delete a directory tree
46 static void recursive_delete(const char *path)
56 for (de=readdir(dir);de;de=readdir(dir)) {
60 if (ISDOT(de->d_name) || ISDOTDOT(de->d_name)) {
64 fname = talloc_asprintf(path, "%s/%s", path, de->d_name);
65 if (stat(fname, &st) != 0) {
68 if (S_ISDIR(st.st_mode)) {
69 recursive_delete(fname);
73 if (unlink(fname) != 0) {
74 DEBUG(0,("Unabled to delete '%s' - %s\n",
75 fname, strerror(errno)));
76 smb_panic("unable to cleanup tmp files");
84 cleanup temporary files. This is the new alternative to
85 TDB_CLEAR_IF_FIRST. Unfortunately TDB_CLEAR_IF_FIRST is not
86 efficient on unix systems due to the lack of scaling of the byte
87 range locking system. So instead of putting the burden on tdb to
88 cleanup tmp files, this function deletes them.
90 static void cleanup_tmp_files(struct loadparm_context *lp_ctx)
93 TALLOC_CTX *mem_ctx = talloc_new(NULL);
95 path = smbd_tmp_path(mem_ctx, lp_ctx, NULL);
97 recursive_delete(path);
101 static void sig_hup(int sig)
103 debug_schedule_reopen_logs();
106 static void sig_term(int sig)
109 static int done_sigterm;
110 if (done_sigterm == 0 && getpgrp() == getpid()) {
111 DEBUG(0,("SIGTERM: killing children\n"));
113 kill(-getpgrp(), SIGTERM);
122 static void setup_signals(void)
124 /* we are never interested in SIGPIPE */
125 BlockSignals(true,SIGPIPE);
128 /* we are never interested in SIGFPE */
129 BlockSignals(true,SIGFPE);
132 /* We are no longer interested in USR1 */
133 BlockSignals(true, SIGUSR1);
136 /* We are no longer interested in USR2 */
137 BlockSignals(true,SIGUSR2);
140 /* POSIX demands that signals are inherited. If the invoking process has
141 * these signals masked, we will have problems, as we won't recieve them. */
142 BlockSignals(false, SIGHUP);
143 BlockSignals(false, SIGTERM);
145 CatchSignal(SIGHUP, sig_hup);
146 CatchSignal(SIGTERM, sig_term);
152 static void server_stdin_handler(struct event_context *event_ctx, struct fd_event *fde,
153 uint16_t flags, void *private)
155 const char *binary_name = (const char *)private;
157 if (read(0, &c, 1) == 0) {
158 DEBUG(0,("%s: EOF on stdin - terminating\n", binary_name));
160 if (getpgrp() == getpid()) {
161 kill(-getpgrp(), SIGTERM);
169 die if the user selected maximum runtime is exceeded
171 _NORETURN_ static void max_runtime_handler(struct event_context *ev,
172 struct timed_event *te,
173 struct timeval t, void *private)
175 const char *binary_name = (const char *)private;
176 DEBUG(0,("%s: maximum runtime exceeded - terminating\n", binary_name));
183 static int binary_smbd_main(const char *binary_name, int argc, const char *argv[])
185 bool opt_daemon = false;
186 bool opt_interactive = false;
189 extern NTSTATUS server_service_wrepl_init(void);
190 extern NTSTATUS server_service_kdc_init(void);
191 extern NTSTATUS server_service_ldap_init(void);
192 extern NTSTATUS server_service_web_init(void);
193 extern NTSTATUS server_service_ldap_init(void);
194 extern NTSTATUS server_service_winbind_init(void);
195 extern NTSTATUS server_service_nbtd_init(void);
196 extern NTSTATUS server_service_auth_init(void);
197 extern NTSTATUS server_service_cldapd_init(void);
198 extern NTSTATUS server_service_smb_init(void);
199 extern NTSTATUS server_service_drepl_init(void);
200 extern NTSTATUS server_service_rpc_init(void);
201 init_module_fn static_init[] = { STATIC_smbd_MODULES };
202 init_module_fn *shared_init;
203 struct event_context *event_ctx;
205 const char *model = "standard";
212 struct poptOption long_options[] = {
214 {"daemon", 'D', POPT_ARG_NONE, NULL, OPT_DAEMON,
215 "Become a daemon (default)", NULL },
216 {"interactive", 'i', POPT_ARG_NONE, NULL, OPT_INTERACTIVE,
217 "Run interactive (not a daemon)", NULL},
218 {"model", 'M', POPT_ARG_STRING, NULL, OPT_PROCESS_MODEL,
219 "Select process model", "MODEL"},
220 {"maximum-runtime",0, POPT_ARG_INT, &max_runtime, 0,
221 "set maximum runtime of the server process, till autotermination", "seconds"},
227 pc = poptGetContext(binary_name, argc, argv, long_options, 0);
228 while((opt = poptGetNextOpt(pc)) != -1) {
233 case OPT_INTERACTIVE:
234 opt_interactive = true;
236 case OPT_PROCESS_MODEL:
237 model = poptGetOptArg(pc);
240 fprintf(stderr, "\nInvalid option %s: %s\n\n",
241 poptBadOption(pc, 0), poptStrerror(opt));
242 poptPrintUsage(pc, stderr, 0);
247 if (opt_daemon && opt_interactive) {
248 fprintf(stderr,"\nERROR: "
249 "Option -i|--interactive is not allowed together with -D|--daemon\n\n");
250 poptPrintUsage(pc, stderr, 0);
252 } else if (!opt_interactive) {
253 /* default is --daemon */
259 setup_logging(binary_name, opt_interactive?DEBUG_STDOUT:DEBUG_FILE);
262 /* we want total control over the permissions on created files,
263 so set our umask to 0 */
266 DEBUG(0,("%s version %s started.\n", binary_name, SAMBA_VERSION_STRING));
267 DEBUGADD(0,("Copyright Andrew Tridgell and the Samba Team 1992-2008\n"));
269 if (sizeof(uint16_t) < 2 || sizeof(uint32_t) < 4 || sizeof(uint64_t) < 8) {
270 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
271 DEBUGADD(0,("sizeof(uint16_t) = %u, sizeof(uint32_t) %u, sizeof(uint64_t) = %u\n",
272 (unsigned int)sizeof(uint16_t), (unsigned int)sizeof(uint32_t), (unsigned int)sizeof(uint64_t)));
277 DEBUG(3,("Becoming a daemon.\n"));
281 cleanup_tmp_files(cmdline_lp_ctx);
283 if (!directory_exist(lp_lockdir(cmdline_lp_ctx))) {
284 mkdir(lp_lockdir(cmdline_lp_ctx), 0755);
287 pidfile_create(lp_piddir(cmdline_lp_ctx), binary_name);
289 /* Do *not* remove this, until you have removed
290 * passdb/secrets.c, and proved that Samba still builds... */
291 /* Setup the SECRETS subsystem */
292 if (secrets_init(talloc_autofree_context(), cmdline_lp_ctx) == NULL) {
296 gensec_init(cmdline_lp_ctx); /* FIXME: */
298 ntptr_init(cmdline_lp_ctx); /* FIXME: maybe run this in the initialization function
299 of the spoolss RPC server instead? */
301 ntvfs_init(cmdline_lp_ctx); /* FIXME: maybe run this in the initialization functions
302 of the SMB[,2] server instead? */
304 process_model_init(cmdline_lp_ctx);
306 shared_init = load_samba_modules(NULL, cmdline_lp_ctx, "service");
308 run_init_functions(static_init);
309 run_init_functions(shared_init);
311 talloc_free(shared_init);
313 /* the event context is the top level structure in smbd. Everything else
314 should hang off that */
315 event_ctx = event_context_init(talloc_autofree_context());
317 if (event_ctx == NULL) {
318 DEBUG(0,("Initializing event context failed\n"));
322 /* initialise clustering if needed */
323 cluster_ctdb_init(cmdline_lp_ctx, event_ctx, model);
325 if (opt_interactive) {
326 /* catch EOF on stdin */
328 signal(SIGTTIN, SIG_IGN);
330 event_add_fd(event_ctx, event_ctx, 0, EVENT_FD_READ,
331 server_stdin_handler,
332 discard_const(binary_name));
337 event_add_timed(event_ctx, event_ctx,
338 timeval_current_ofs(max_runtime, 0),
340 discard_const(binary_name));
343 DEBUG(0,("%s: using '%s' process model\n", binary_name, model));
344 status = server_service_startup(event_ctx, cmdline_lp_ctx, model,
345 lp_server_services(cmdline_lp_ctx));
346 if (!NT_STATUS_IS_OK(status)) {
347 DEBUG(0,("Starting Services failed - %s\n", nt_errstr(status)));
351 /* wait for events - this is where smbd sits for most of its
353 event_loop_wait(event_ctx);
355 /* as everything hangs off this event context, freeing it
356 should initiate a clean shutdown of all services */
357 talloc_free(event_ctx);
362 int main(int argc, const char *argv[])
364 return binary_smbd_main("smbd", argc, argv);