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 init_module_fn static_init[] = { STATIC_service_MODULES };
190 init_module_fn *shared_init;
191 struct event_context *event_ctx;
193 const char *model = "standard";
200 struct poptOption long_options[] = {
202 {"daemon", 'D', POPT_ARG_NONE, NULL, OPT_DAEMON,
203 "Become a daemon (default)", NULL },
204 {"interactive", 'i', POPT_ARG_NONE, NULL, OPT_INTERACTIVE,
205 "Run interactive (not a daemon)", NULL},
206 {"model", 'M', POPT_ARG_STRING, NULL, OPT_PROCESS_MODEL,
207 "Select process model", "MODEL"},
208 {"maximum-runtime",0, POPT_ARG_INT, &max_runtime, 0,
209 "set maximum runtime of the server process, till autotermination", "seconds"},
215 pc = poptGetContext(binary_name, argc, argv, long_options, 0);
216 while((opt = poptGetNextOpt(pc)) != -1) {
221 case OPT_INTERACTIVE:
222 opt_interactive = true;
224 case OPT_PROCESS_MODEL:
225 model = poptGetOptArg(pc);
228 fprintf(stderr, "\nInvalid option %s: %s\n\n",
229 poptBadOption(pc, 0), poptStrerror(opt));
230 poptPrintUsage(pc, stderr, 0);
235 if (opt_daemon && opt_interactive) {
236 fprintf(stderr,"\nERROR: "
237 "Option -i|--interactive is not allowed together with -D|--daemon\n\n");
238 poptPrintUsage(pc, stderr, 0);
240 } else if (!opt_interactive) {
241 /* default is --daemon */
247 setup_logging(binary_name, opt_interactive?DEBUG_STDOUT:DEBUG_FILE);
250 /* we want total control over the permissions on created files,
251 so set our umask to 0 */
254 DEBUG(0,("%s version %s started.\n", binary_name, SAMBA_VERSION_STRING));
255 DEBUGADD(0,("Copyright Andrew Tridgell and the Samba Team 1992-2008\n"));
257 if (sizeof(uint16_t) < 2 || sizeof(uint32_t) < 4 || sizeof(uint64_t) < 8) {
258 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
259 DEBUGADD(0,("sizeof(uint16_t) = %u, sizeof(uint32_t) %u, sizeof(uint64_t) = %u\n",
260 (unsigned int)sizeof(uint16_t), (unsigned int)sizeof(uint32_t), (unsigned int)sizeof(uint64_t)));
265 DEBUG(3,("Becoming a daemon.\n"));
269 cleanup_tmp_files(cmdline_lp_ctx);
271 if (!directory_exist(lp_lockdir(cmdline_lp_ctx))) {
272 mkdir(lp_lockdir(cmdline_lp_ctx), 0755);
275 pidfile_create(lp_piddir(cmdline_lp_ctx), binary_name);
277 /* Do *not* remove this, until you have removed
278 * passdb/secrets.c, and proved that Samba still builds... */
279 /* Setup the SECRETS subsystem */
280 if (!secrets_init(cmdline_lp_ctx)) {
284 gensec_init(cmdline_lp_ctx); /* FIXME: */
286 ntptr_init(cmdline_lp_ctx); /* FIXME: maybe run this in the initialization function
287 of the spoolss RPC server instead? */
289 ntvfs_init(cmdline_lp_ctx); /* FIXME: maybe run this in the initialization functions
290 of the SMB[,2] server instead? */
292 process_model_init(cmdline_lp_ctx);
294 shared_init = load_samba_modules(NULL, cmdline_lp_ctx, "service");
296 run_init_functions(static_init);
297 run_init_functions(shared_init);
299 talloc_free(shared_init);
301 /* the event context is the top level structure in smbd. Everything else
302 should hang off that */
303 event_ctx = event_context_init(talloc_autofree_context());
305 if (event_ctx == NULL) {
306 DEBUG(0,("Initializing event context failed\n"));
310 /* initialise clustering if needed */
311 cluster_ctdb_init(cmdline_lp_ctx, 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, cmdline_lp_ctx, model,
333 lp_server_services(cmdline_lp_ctx));
334 if (!NT_STATUS_IS_OK(status)) {
335 DEBUG(0,("Starting Services failed - %s\n", nt_errstr(status)));
339 /* wait for events - this is where smbd sits for most of its
341 event_loop_wait(event_ctx);
343 /* as everything hangs off this event context, freeing it
344 should initiate a clean shutdown of all services */
345 talloc_free(event_ctx);
350 int main(int argc, const char *argv[])
352 return binary_smbd_main("smbd", argc, argv);