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"
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(void)
93 TALLOC_CTX *mem_ctx = talloc_new(NULL);
95 path = smbd_tmp_path(mem_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 = 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 static void max_runtime_handler(struct event_context *ev, struct timed_event *te,
172 struct timeval t, void *private)
174 const char *binary_name = private;
175 DEBUG(0,("%s: maximum runtime exceeded - terminating\n", binary_name));
182 static int binary_smbd_main(const char *binary_name, int argc, const char *argv[])
184 BOOL interactive = False;
187 init_module_fn static_init[] = STATIC_service_MODULES;
188 init_module_fn *shared_init;
189 struct event_context *event_ctx;
191 const char *model = "standard";
194 OPT_INTERACTIVE = 1000,
197 struct poptOption long_options[] = {
199 {"interactive", 'i', POPT_ARG_NONE, NULL, OPT_INTERACTIVE,
200 "Run interactive (not a daemon)", NULL},
201 {"model", 'M', POPT_ARG_STRING, NULL, OPT_PROCESS_MODEL,
202 "Select process model", "MODEL"},
203 {"maximum-runtime",0, POPT_ARG_INT, &max_runtime, 0,
204 "set maximum runtime of the server process, till autotermination", "seconds"},
210 pc = poptGetContext(binary_name, argc, argv, long_options, 0);
212 while((opt = poptGetNextOpt(pc)) != -1) {
214 case OPT_INTERACTIVE:
217 case OPT_PROCESS_MODEL:
218 model = poptGetOptArg(pc);
224 setup_logging(binary_name, interactive?DEBUG_STDOUT:DEBUG_FILE);
227 /* we want total control over the permissions on created files,
228 so set our umask to 0 */
231 DEBUG(0,("%s version %s started.\n", binary_name, SAMBA_VERSION_STRING));
232 DEBUGADD(0,("Copyright Andrew Tridgell and the Samba Team 1992-2007\n"));
234 if (sizeof(uint16_t) < 2 || sizeof(uint32_t) < 4 || sizeof(uint64_t) < 8) {
235 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
236 DEBUGADD(0,("sizeof(uint16_t) = %u, sizeof(uint32_t) %u, sizeof(uint64_t) = %u\n",
237 sizeof(uint16_t), sizeof(uint32_t), sizeof(uint64_t)));
242 DEBUG(3,("Becoming a daemon.\n"));
248 if (!directory_exist(lp_lockdir())) {
249 mkdir(lp_lockdir(), 0755);
252 pidfile_create(binary_name);
254 /* Do *not* remove this, until you have removed
255 * passdb/secrets.c, and proved that Samba still builds... */
256 /* Setup the SECRETS subsystem */
257 if (!secrets_init()) {
261 ldb_global_init(); /* FIXME: */
265 gensec_init(); /* FIXME: */
267 registry_init(); /* FIXME: maybe run this in the initialization function
268 of the winreg RPC server instead? */
270 ntptr_init(); /* FIXME: maybe run this in the initialization function
271 of the spoolss RPC server instead? */
273 ntvfs_init(); /* FIXME: maybe run this in the initialization functions
274 of the SMB[,2] server instead? */
276 process_model_init();
278 shared_init = load_samba_modules(NULL, "service");
280 run_init_functions(static_init);
281 run_init_functions(shared_init);
283 talloc_free(shared_init);
285 /* the event context is the top level structure in smbd. Everything else
286 should hang off that */
287 event_ctx = event_context_init(talloc_autofree_context());
289 /* initialise clustering if needed */
290 cluster_ctdb_init(event_ctx, model);
293 /* catch EOF on stdin */
295 signal(SIGTTIN, SIG_IGN);
297 event_add_fd(event_ctx, event_ctx, 0, EVENT_FD_READ,
298 server_stdin_handler,
299 discard_const(binary_name));
304 event_add_timed(event_ctx, event_ctx,
305 timeval_current_ofs(max_runtime, 0),
307 discard_const(binary_name));
310 DEBUG(0,("%s: using '%s' process model\n", binary_name, model));
311 status = server_service_startup(event_ctx, model, lp_server_services());
312 if (!NT_STATUS_IS_OK(status)) {
313 DEBUG(0,("Starting Services failed - %s\n", nt_errstr(status)));
317 /* wait for events - this is where smbd sits for most of its
319 event_loop_wait(event_ctx);
321 /* as everything hangs off this event context, freeing it
322 should initiate a clean shutdown of all services */
323 talloc_free(event_ctx);
328 int main(int argc, const char *argv[])
330 return binary_smbd_main("smbd", argc, argv);