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"
32 #include "ldb/include/ldb.h"
33 #include "registry/registry.h"
34 #include "ntvfs/ntvfs.h"
35 #include "ntptr/ntptr.h"
36 #include "auth/gensec/gensec.h"
37 #include "smbd/process_model.h"
38 #include "smbd/service.h"
39 #include "param/secrets.h"
40 #include "smbd/pidfile.h"
41 #include "cluster/ctdb/ctdb_cluster.h"
42 #include "param/param.h"
45 recursively delete a directory tree
47 static void recursive_delete(const char *path)
57 for (de=readdir(dir);de;de=readdir(dir)) {
61 if (ISDOT(de->d_name) || ISDOTDOT(de->d_name)) {
65 fname = talloc_asprintf(path, "%s/%s", path, de->d_name);
66 if (stat(fname, &st) != 0) {
69 if (S_ISDIR(st.st_mode)) {
70 recursive_delete(fname);
74 if (unlink(fname) != 0) {
75 DEBUG(0,("Unabled to delete '%s' - %s\n",
76 fname, strerror(errno)));
77 smb_panic("unable to cleanup tmp files");
85 cleanup temporary files. This is the new alternative to
86 TDB_CLEAR_IF_FIRST. Unfortunately TDB_CLEAR_IF_FIRST is not
87 efficient on unix systems due to the lack of scaling of the byte
88 range locking system. So instead of putting the burden on tdb to
89 cleanup tmp files, this function deletes them.
91 static void cleanup_tmp_files(void)
94 TALLOC_CTX *mem_ctx = talloc_new(NULL);
96 path = smbd_tmp_path(mem_ctx, NULL);
98 recursive_delete(path);
102 static void sig_hup(int sig)
104 debug_schedule_reopen_logs();
107 static void sig_term(int sig)
110 static int done_sigterm;
111 if (done_sigterm == 0 && getpgrp() == getpid()) {
112 DEBUG(0,("SIGTERM: killing children\n"));
114 kill(-getpgrp(), SIGTERM);
123 static void setup_signals(void)
125 /* we are never interested in SIGPIPE */
126 BlockSignals(True,SIGPIPE);
129 /* we are never interested in SIGFPE */
130 BlockSignals(True,SIGFPE);
133 /* We are no longer interested in USR1 */
134 BlockSignals(True, SIGUSR1);
137 /* We are no longer interested in USR2 */
138 BlockSignals(True,SIGUSR2);
141 /* POSIX demands that signals are inherited. If the invoking process has
142 * these signals masked, we will have problems, as we won't recieve them. */
143 BlockSignals(False, SIGHUP);
144 BlockSignals(False, SIGTERM);
146 CatchSignal(SIGHUP, sig_hup);
147 CatchSignal(SIGTERM, sig_term);
153 static void server_stdin_handler(struct event_context *event_ctx, struct fd_event *fde,
154 uint16_t flags, void *private)
156 const char *binary_name = (const char *)private;
158 if (read(0, &c, 1) == 0) {
159 DEBUG(0,("%s: EOF on stdin - terminating\n", binary_name));
161 if (getpgrp() == getpid()) {
162 kill(-getpgrp(), SIGTERM);
170 die if the user selected maximum runtime is exceeded
172 _NORETURN_ static void max_runtime_handler(struct event_context *ev,
173 struct timed_event *te,
174 struct timeval t, void *private)
176 const char *binary_name = (const char *)private;
177 DEBUG(0,("%s: maximum runtime exceeded - terminating\n", binary_name));
184 static int binary_smbd_main(const char *binary_name, int argc, const char *argv[])
186 bool opt_daemon = false;
187 bool opt_interactive = false;
190 init_module_fn static_init[] = STATIC_service_MODULES;
191 init_module_fn *shared_init;
192 struct event_context *event_ctx;
194 const char *model = "standard";
201 struct poptOption long_options[] = {
203 {"daemon", 'D', POPT_ARG_NONE, NULL, OPT_DAEMON,
204 "Become a daemon (default)", NULL },
205 {"interactive", 'i', POPT_ARG_NONE, NULL, OPT_INTERACTIVE,
206 "Run interactive (not a daemon)", NULL},
207 {"model", 'M', POPT_ARG_STRING, NULL, OPT_PROCESS_MODEL,
208 "Select process model", "MODEL"},
209 {"maximum-runtime",0, POPT_ARG_INT, &max_runtime, 0,
210 "set maximum runtime of the server process, till autotermination", "seconds"},
216 pc = poptGetContext(binary_name, argc, argv, long_options, 0);
217 while((opt = poptGetNextOpt(pc)) != -1) {
222 case OPT_INTERACTIVE:
223 opt_interactive = true;
225 case OPT_PROCESS_MODEL:
226 model = poptGetOptArg(pc);
229 d_fprintf(stderr, "\nInvalid option %s: %s\n\n",
230 poptBadOption(pc, 0), poptStrerror(opt));
231 poptPrintUsage(pc, stderr, 0);
236 if (opt_daemon && opt_interactive) {
237 d_fprintf(stderr,"\nERROR: "
238 "Option -i|--interactive is not allowed together with -D|--daemon\n\n");
239 poptPrintUsage(pc, stderr, 0);
241 } else if (!opt_interactive) {
242 /* default is --daemon */
248 setup_logging(binary_name, opt_interactive?DEBUG_STDOUT:DEBUG_FILE);
251 /* we want total control over the permissions on created files,
252 so set our umask to 0 */
255 DEBUG(0,("%s version %s started.\n", binary_name, SAMBA_VERSION_STRING));
256 DEBUGADD(0,("Copyright Andrew Tridgell and the Samba Team 1992-2007\n"));
258 if (sizeof(uint16_t) < 2 || sizeof(uint32_t) < 4 || sizeof(uint64_t) < 8) {
259 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
260 DEBUGADD(0,("sizeof(uint16_t) = %u, sizeof(uint32_t) %u, sizeof(uint64_t) = %u\n",
261 (unsigned int)sizeof(uint16_t), (unsigned int)sizeof(uint32_t), (unsigned int)sizeof(uint64_t)));
266 DEBUG(3,("Becoming a daemon.\n"));
272 if (!directory_exist(lp_lockdir(global_loadparm))) {
273 mkdir(lp_lockdir(global_loadparm), 0755);
276 pidfile_create(binary_name);
278 /* Do *not* remove this, until you have removed
279 * passdb/secrets.c, and proved that Samba still builds... */
280 /* Setup the SECRETS subsystem */
281 if (!secrets_init()) {
285 ldb_global_init(); /* FIXME: */
289 gensec_init(); /* FIXME: */
291 ntptr_init(); /* FIXME: maybe run this in the initialization function
292 of the spoolss RPC server instead? */
294 ntvfs_init(); /* FIXME: maybe run this in the initialization functions
295 of the SMB[,2] server instead? */
297 process_model_init();
299 shared_init = load_samba_modules(NULL, "service");
301 run_init_functions(static_init);
302 run_init_functions(shared_init);
304 talloc_free(shared_init);
306 /* the event context is the top level structure in smbd. Everything else
307 should hang off that */
308 event_ctx = event_context_init(talloc_autofree_context());
310 /* initialise clustering if needed */
311 cluster_ctdb_init(event_ctx, model);
313 if (opt_interactive) {
314 /* catch EOF on stdin */
316 signal(SIGTTIN, SIG_IGN);
318 event_add_fd(event_ctx, event_ctx, 0, EVENT_FD_READ,
319 server_stdin_handler,
320 discard_const(binary_name));
325 event_add_timed(event_ctx, event_ctx,
326 timeval_current_ofs(max_runtime, 0),
328 discard_const(binary_name));
331 DEBUG(0,("%s: using '%s' process model\n", binary_name, model));
332 status = server_service_startup(event_ctx, model, lp_server_services(global_loadparm));
333 if (!NT_STATUS_IS_OK(status)) {
334 DEBUG(0,("Starting Services failed - %s\n", nt_errstr(status)));
338 /* wait for events - this is where smbd sits for most of its
340 event_loop_wait(event_ctx);
342 /* as everything hangs off this event context, freeing it
343 should initiate a clean shutdown of all services */
344 talloc_free(event_ctx);
349 int main(int argc, const char *argv[])
351 return binary_smbd_main("smbd", argc, argv);