#include "includes.h"
+static_decl_rpc;
+
static int am_parent = 1;
/* the last message the was processed */
/* a useful macro to debug the last message processed */
#define LAST_MESSAGE() smb_fn_name(last_message)
+extern struct auth_context *negprot_global_auth_context;
extern pstring user_socket_options;
extern SIG_ATOMIC_T got_sig_term;
extern SIG_ATOMIC_T reload_after_sighup;
+static SIG_ATOMIC_T got_sig_cld;
#ifdef WITH_DFS
extern int dcelogin_atmost_once;
client_setfd(fd);
}
+struct event_context *smbd_event_context(void)
+{
+ static struct event_context *ctx;
+
+ if (!ctx && !(ctx = event_context_init(NULL))) {
+ smb_panic("Could not init smbd event context\n");
+ }
+ return ctx;
+}
+
+/*******************************************************************
+ What to do when smb.conf is updated.
+ ********************************************************************/
+
+static void smb_conf_updated(int msg_type, struct process_id src,
+ void *buf, size_t len, void *private_data)
+{
+ DEBUG(10,("smb_conf_updated: Got message saying smb.conf was updated. Reloading.\n"));
+ reload_services(False);
+}
+
+
+/*******************************************************************
+ Delete a statcache entry.
+ ********************************************************************/
+
+static void smb_stat_cache_delete(int msg_type, struct process_id src,
+ void *buf, size_t len, void *private_data)
+{
+ const char *name = (const char *)buf;
+ DEBUG(10,("smb_stat_cache_delete: delete name %s\n", name));
+ stat_cache_delete(name);
+}
+
/****************************************************************************
Terminate signal.
****************************************************************************/
static void sig_term(void)
{
got_sig_term = 1;
- sys_select_signal();
+ sys_select_signal(SIGTERM);
}
/****************************************************************************
static void sig_hup(int sig)
{
reload_after_sighup = 1;
- sys_select_signal();
+ sys_select_signal(SIGHUP);
+}
+
+/****************************************************************************
+ Catch a sigcld
+****************************************************************************/
+static void sig_cld(int sig)
+{
+ got_sig_cld = 1;
+ sys_select_signal(SIGCLD);
}
/****************************************************************************
somewhere else.
****************************************************************************/
-static void msg_sam_sync(int UNUSED(msg_type), pid_t UNUSED(pid),
- void *UNUSED(buf), size_t UNUSED(len))
+static void msg_sam_sync(int UNUSED(msg_type), struct process_id UNUSED(pid),
+ void *UNUSED(buf), size_t UNUSED(len),
+ void *private_data)
{
DEBUG(10, ("** sam sync message received, ignoring\n"));
}
somewhere else.
****************************************************************************/
-static void msg_sam_repl(int msg_type, pid_t pid, void *buf, size_t len)
+static void msg_sam_repl(int msg_type, struct process_id pid,
+ void *buf, size_t len, void *private_data)
{
uint32 low_serial;
return True;
}
-static void msg_exit_server(int msg_type, pid_t src, void *buf, size_t len)
+static void msg_exit_server(int msg_type, struct process_id src,
+ void *buf, size_t len, void *private_data)
{
- exit_server("Got a SHUTDOWN message");
+ DEBUG(3, ("got a SHUTDOWN message\n"));
+ exit_server_cleanly(NULL);
}
+#ifdef DEVELOPER
+static void msg_inject_fault(int msg_type, struct process_id src,
+ void *buf, size_t len, void *private_data)
+{
+ int sig;
+
+ if (len != sizeof(int)) {
+
+ DEBUG(0, ("Process %llu sent bogus signal injection request\n",
+ (unsigned long long)src.pid));
+ return;
+ }
+
+ sig = *(int *)buf;
+ if (sig == -1) {
+ exit_server("internal error injected");
+ return;
+ }
+
+#if HAVE_STRSIGNAL
+ DEBUG(0, ("Process %llu requested injection of signal %d (%s)\n",
+ (unsigned long long)src.pid, sig, strsignal(sig)));
+#else
+ DEBUG(0, ("Process %llu requested injection of signal %d\n",
+ (unsigned long long)src.pid, sig));
+#endif
+
+ kill(sys_getpid(), sig);
+}
+#endif /* DEVELOPER */
+
+struct child_pid {
+ struct child_pid *prev, *next;
+ pid_t pid;
+};
+
+static struct child_pid *children;
+static int num_children;
+
+static void add_child_pid(pid_t pid)
+{
+ struct child_pid *child;
+
+ if (lp_max_smbd_processes() == 0) {
+ /* Don't bother with the child list if we don't care anyway */
+ return;
+ }
+
+ child = SMB_MALLOC_P(struct child_pid);
+ if (child == NULL) {
+ DEBUG(0, ("Could not add child struct -- malloc failed\n"));
+ return;
+ }
+ child->pid = pid;
+ DLIST_ADD(children, child);
+ num_children += 1;
+}
+
+static void remove_child_pid(pid_t pid)
+{
+ struct child_pid *child;
+
+ if (lp_max_smbd_processes() == 0) {
+ /* Don't bother with the child list if we don't care anyway */
+ return;
+ }
+
+ for (child = children; child != NULL; child = child->next) {
+ if (child->pid == pid) {
+ struct child_pid *tmp = child;
+ DLIST_REMOVE(children, child);
+ SAFE_FREE(tmp);
+ num_children -= 1;
+ return;
+ }
+ }
+
+ DEBUG(0, ("Could not find child %d -- ignoring\n", (int)pid));
+}
/****************************************************************************
Have we reached the process limit ?
if (!max_processes)
return True;
- {
- TDB_CONTEXT *tdb = conn_tdb_ctx();
- int32 val;
- if (!tdb) {
- DEBUG(0,("allowable_number_of_smbd_processes: can't open connection tdb.\n" ));
- return False;
- }
-
- val = tdb_fetch_int32(tdb, "INFO/total_smbds");
- if (val == -1 && (tdb_error(tdb) != TDB_ERR_NOEXIST)) {
- DEBUG(0,("allowable_number_of_smbd_processes: can't fetch INFO/total_smbds. Error %s\n",
- tdb_errorstr(tdb) ));
- return False;
- }
- if (val > max_processes) {
- DEBUG(0,("allowable_number_of_smbd_processes: number of processes (%d) is over allowed limit (%d)\n",
- val, max_processes ));
- return False;
- }
- }
- return True;
+ return num_children < max_processes;
}
/****************************************************************************
#endif
/* Stop zombies */
- CatchChild();
+ CatchSignal(SIGCLD, sig_cld);
FD_ZERO(&listen_set);
continue;
}
- for (ptr=ports; next_token(&ptr, tok, NULL, sizeof(tok)); ) {
+ for (ptr=ports; next_token(&ptr, tok, " \t,", sizeof(tok)); ) {
unsigned port = atoi(tok);
if (port == 0) {
continue;
num_interfaces = 1;
- for (ptr=ports; next_token(&ptr, tok, NULL, sizeof(tok)); ) {
+ for (ptr=ports; next_token(&ptr, tok, " \t,", sizeof(tok)); ) {
unsigned port = atoi(tok);
if (port == 0) continue;
/* open an incoming socket */
/* Listen to messages */
- message_register(MSG_SMB_SAM_SYNC, msg_sam_sync);
- message_register(MSG_SMB_SAM_REPL, msg_sam_repl);
- message_register(MSG_SHUTDOWN, msg_exit_server);
+ message_register(MSG_SMB_SAM_SYNC, msg_sam_sync, NULL);
+ message_register(MSG_SMB_SAM_REPL, msg_sam_repl, NULL);
+ message_register(MSG_SHUTDOWN, msg_exit_server, NULL);
+ message_register(MSG_SMB_FILE_RENAME, msg_file_was_renamed, NULL);
+ message_register(MSG_SMB_CONF_UPDATED, smb_conf_updated, NULL);
+ message_register(MSG_SMB_STAT_CACHE_DELETE, smb_stat_cache_delete,
+ NULL);
+
+#ifdef DEVELOPER
+ message_register(MSG_SMB_INJECT_FAULT, msg_inject_fault, NULL);
+#endif
/* now accept incoming connections - forking a new process
for each incoming connection */
int num;
/* Free up temporary memory from the main smbd. */
- lp_talloc_free();
+ lp_TALLOC_FREE();
/* Ensure we respond to PING and DEBUG messages from the main smbd. */
message_dispatch();
+ if (got_sig_cld) {
+ pid_t pid;
+ got_sig_cld = False;
+
+ while ((pid = sys_waitpid(-1, NULL, WNOHANG)) > 0) {
+ remove_child_pid(pid);
+ }
+ }
+
memcpy((char *)&lfds, (char *)&listen_set,
sizeof(listen_set));
if (num == -1 && errno == EINTR) {
if (got_sig_term) {
- exit_server("Caught TERM signal");
+ exit_server_cleanly(NULL);
}
/* check for sighup processing */
for( ; num > 0; num--) {
struct sockaddr addr;
socklen_t in_addrlen = sizeof(addr);
+ pid_t child = 0;
s = -1;
for(i = 0; i < num_sockets; i++) {
if (smbd_server_fd() != -1 && interactive)
return True;
- if (allowable_number_of_smbd_processes() && smbd_server_fd() != -1 && sys_fork()==0) {
+ if (allowable_number_of_smbd_processes() &&
+ smbd_server_fd() != -1 &&
+ ((child = sys_fork())==0)) {
/* Child code ... */
+
+ /* Stop zombies, the parent explicitly handles
+ * them, counting worker smbds. */
+ CatchChild();
/* close the listening socket(s) */
for(i = 0; i < num_sockets; i++)
/* this is needed so that we get decent entries
in smbstatus for port 445 connects */
- set_remote_machine_name(get_peer_addr(smbd_server_fd()), False);
+ set_remote_machine_name(get_peer_addr(smbd_server_fd()),
+ False);
/* Reset the state of the random
* number generation system, so
* numbers as each other */
set_need_random_reseed();
- /* tdb needs special fork handling - remove CLEAR_IF_FIRST flags */
- if (tdb_reopen_all() == -1) {
+ /* tdb needs special fork handling - remove
+ * CLEAR_IF_FIRST flags */
+ if (tdb_reopen_all(1) == -1) {
DEBUG(0,("tdb_reopen_all failed.\n"));
smb_panic("tdb_reopen_all failed.");
}
smbd_set_server_fd(-1);
+ if (child != 0) {
+ add_child_pid(child);
+ }
+
/* Force parent to check log size after
* spawning child. Fix from
* klausr@ITAP.Physik.Uni-Stuttgart.De. The
/* NOTREACHED return True; */
}
+/****************************************************************************
+ Reload printers
+**************************************************************************/
+void reload_printers(void)
+{
+ int snum;
+ int n_services = lp_numservices();
+ int pnum = lp_servicenumber(PRINTERS_NAME);
+ const char *pname;
+
+ pcap_cache_reload();
+
+ /* remove stale printers */
+ for (snum = 0; snum < n_services; snum++) {
+ /* avoid removing PRINTERS_NAME or non-autoloaded printers */
+ if (snum == pnum || !(lp_snum_ok(snum) && lp_print_ok(snum) &&
+ lp_autoloaded(snum)))
+ continue;
+
+ pname = lp_printername(snum);
+ if (!pcap_printername_ok(pname)) {
+ DEBUG(3, ("removing stale printer %s\n", pname));
+
+ if (is_printer_published(NULL, snum, NULL))
+ nt_printer_publish(NULL, snum, SPOOL_DS_UNPUBLISH);
+ del_a_printer(pname);
+ lp_killservice(snum);
+ }
+ }
+
+ load_printers();
+}
+
/****************************************************************************
Reload the services file.
**************************************************************************/
lp_killunused(conn_snum_used);
- ret = lp_load(dyn_CONFIGFILE, False, False, True);
+ ret = lp_load(dyn_CONFIGFILE, False, False, True, True);
- remove_stale_printers();
- load_printers();
+ reload_printers();
/* perhaps the config filename is now set */
if (!test)
return(ret);
}
-
-#if DUMP_CORE
-/*******************************************************************
-prepare to dump a core file - carefully!
-********************************************************************/
-static BOOL dump_core(void)
-{
- char *p;
- pstring dname;
-
- pstrcpy(dname,lp_logfile());
- if ((p=strrchr_m(dname,'/'))) *p=0;
- pstrcat(dname,"/corefiles");
- mkdir(dname,0700);
- sys_chown(dname,getuid(),getgid());
- chmod(dname,0700);
- if (chdir(dname)) return(False);
- umask(~(0700));
-
-#ifdef HAVE_GETRLIMIT
-#ifdef RLIMIT_CORE
- {
- struct rlimit rlp;
- getrlimit(RLIMIT_CORE, &rlp);
- rlp.rlim_cur = MAX(4*1024*1024,rlp.rlim_cur);
- setrlimit(RLIMIT_CORE, &rlp);
- getrlimit(RLIMIT_CORE, &rlp);
- DEBUG(3,("Core limits now %d %d\n",
- (int)rlp.rlim_cur,(int)rlp.rlim_max));
- }
-#endif
-#endif
-
-
- DEBUG(0,("Dumping core in %s\n", dname));
- /* Ensure we don't have a signal handler for abort. */
-#ifdef SIGABRT
- CatchSignal(SIGABRT,SIGNAL_CAST SIG_DFL);
-#endif
- abort();
- return(True);
-}
-#endif
-
/****************************************************************************
Exit the server.
****************************************************************************/
-void exit_server(const char *reason)
+/* Reasons for shutting down a server process. */
+enum server_exit_reason { SERVER_EXIT_NORMAL, SERVER_EXIT_ABNORMAL };
+
+static void exit_server_common(enum server_exit_reason how,
+ const char *const reason) NORETURN_ATTRIBUTE;
+
+static void exit_server_common(enum server_exit_reason how,
+ const char *const reason)
{
static int firsttime=1;
- extern char *last_inbuf;
- extern struct auth_context *negprot_global_auth_context;
if (!firsttime)
exit(0);
firsttime = 0;
change_to_root_user();
- DEBUG(2,("Closing connections\n"));
if (negprot_global_auth_context) {
(negprot_global_auth_context->free)(&negprot_global_auth_context);
print_notify_send_messages(3); /* 3 second timeout. */
- /* run all registered exit events */
- smb_run_exit_events();
-
/* delete our entry in the connections database. */
yield_connection(NULL,"");
respond_to_all_remaining_local_messages();
- decrement_smbd_process_count();
#ifdef WITH_DFS
if (dcelogin_atmost_once) {
}
#endif
- if (!reason) {
+ locking_end();
+ printing_end();
+
+ if (how != SERVER_EXIT_NORMAL) {
int oldlevel = DEBUGLEVEL;
+ char *last_inbuf = get_InBuffer();
+
DEBUGLEVEL = 10;
- DEBUG(0,("Last message was %s\n",smb_fn_name(last_message)));
- if (last_inbuf)
+
+ DEBUGSEP(0);
+ DEBUG(0,("Abnormal server exit: %s\n",
+ reason ? reason : "no explanation provided"));
+ DEBUGSEP(0);
+
+ log_stack_trace();
+ if (last_inbuf) {
+ DEBUG(0,("Last message was %s\n", LAST_MESSAGE()));
show_msg(last_inbuf);
+ }
+
DEBUGLEVEL = oldlevel;
- DEBUG(0,("===============================================================\n"));
-#if DUMP_CORE
- if (dump_core()) return;
-#endif
- }
+ dump_core();
- locking_end();
- printing_end();
+ } else {
+ DEBUG(3,("Server exit (%s)\n",
+ (reason ? reason : "normal exit")));
+ }
- DEBUG(3,("Server exit (%s)\n", (reason ? reason : "")));
exit(0);
}
+void exit_server(const char *const explanation)
+{
+ exit_server_common(SERVER_EXIT_ABNORMAL, explanation);
+}
+
+void exit_server_cleanly(const char *const explanation)
+{
+ exit_server_common(SERVER_EXIT_NORMAL, explanation);
+}
+
+void exit_server_fault(void)
+{
+ exit_server("critical server fault");
+}
+
/****************************************************************************
Initialise connect, service and file structs.
****************************************************************************/
mkproto.h. Mixing $(builddir) and $(srcdir) source files in the current
prototype generation system is too complicated. */
-void build_options(BOOL screen);
+extern void build_options(BOOL screen);
int main(int argc,const char *argv[])
{
static BOOL is_daemon = False;
static BOOL interactive = False;
static BOOL Fork = True;
+ static BOOL no_process_group = False;
static BOOL log_stdout = False;
static char *ports = NULL;
int opt;
poptContext pc;
struct poptOption long_options[] = {
- POPT_AUTOHELP
+ POPT_AUTOHELP
{"daemon", 'D', POPT_ARG_VAL, &is_daemon, True, "Become a daemon (default)" },
{"interactive", 'i', POPT_ARG_VAL, &interactive, True, "Run interactive (not a daemon)"},
- {"foreground", 'F', POPT_ARG_VAL, &Fork, False, "Run daemon in foreground (for daemontools & etc)" },
+ {"foreground", 'F', POPT_ARG_VAL, &Fork, False, "Run daemon in foreground (for daemontools, etc.)" },
+ {"no-process-group", '\0', POPT_ARG_VAL, &no_process_group, True, "Don't create a new process group" },
{"log-stdout", 'S', POPT_ARG_VAL, &log_stdout, True, "Log to stdout" },
{"build-options", 'b', POPT_ARG_NONE, NULL, 'b', "Print build options" },
{"port", 'p', POPT_ARG_STRING, &ports, 0, "Listen on the specified ports"},
POPT_COMMON_SAMBA
- { NULL }
+ POPT_COMMON_DYNCONFIG
+ POPT_TABLEEND
};
+ load_case_tables();
+
#ifdef HAVE_SET_AUTH_PARAMETERS
set_auth_parameters(argc,argv);
#endif
sec_init();
- load_case_tables();
-
set_remote_machine_name("smbd", False);
if (interactive) {
log_stdout = True;
}
+ if (interactive && (DEBUGLEVEL >= 9)) {
+ talloc_enable_leak_report();
+ }
+
if (log_stdout && Fork) {
DEBUG(0,("ERROR: Can't log to stdout (-S) unless daemon is in foreground (-F) or interactive (-i)\n"));
exit(1);
gain_root_privilege();
gain_root_group_privilege();
- fault_setup((void (*)(void *))exit_server);
+ fault_setup((void (*)(void *))exit_server_fault);
+ dump_core_setup("smbd");
+
CatchSignal(SIGTERM , SIGNAL_CAST sig_term);
CatchSignal(SIGHUP,SIGNAL_CAST sig_hup);
reopen_logs();
DEBUG(0,( "smbd version %s started.\n", SAMBA_VERSION_STRING));
- DEBUGADD(0,( "Copyright Andrew Tridgell and the Samba Team 1992-2004\n"));
+ DEBUGADD( 0, ( "%s\n", COPYRIGHT_STARTUP_MESSAGE ) );
DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
(int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
init_structs();
- if (!init_guest_info())
- return -1;
-
#ifdef WITH_PROFILE
if (!profile_setup(False)) {
DEBUG(0,("ERROR: failed to setup profiling\n"));
if (is_daemon && !interactive) {
DEBUG( 3, ( "Becoming a daemon.\n" ) );
- become_daemon(Fork);
+ become_daemon(Fork, no_process_group);
}
#if HAVE_SETPGID
* If we're interactive we want to set our own process group for
* signal management.
*/
- if (interactive)
+ if (interactive && !no_process_group)
setpgid( (pid_t)0, (pid_t)0);
#endif
if (!message_init())
exit(1);
+ /* Initialise the password backed before the global_sam_sid
+ to ensure that we fetch from ldap before we make a domain sid up */
+
+ if(!initialize_password_db(False))
+ exit(1);
+
+ if (!secrets_init()) {
+ DEBUG(0, ("ERROR: smbd can not open secrets.tdb\n"));
+ exit(1);
+ }
+
+ if(!get_global_sam_sid()) {
+ DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
+ exit(1);
+ }
+
if (!session_init())
exit(1);
if (!locking_init(0))
exit(1);
- if (!share_info_db_init())
- exit(1);
-
namecache_enable();
if (!init_registry())
exit(1);
+#if 0
+ if (!init_svcctl_db())
+ exit(1);
+#endif
+
if (!print_backend_init())
exit(1);
+ if (!init_guest_info()) {
+ DEBUG(0,("ERROR: failed to setup guest info.\n"));
+ return -1;
+ }
+
/* Setup the main smbd so that we can get messages. */
/* don't worry about general printing messages here */
smbd is launched via inetd and we fork a copy of
ourselves here */
- if ( is_daemon )
+ if ( is_daemon && !interactive )
start_background_queue();
+ /* Always attempt to initialize DMAPI. We will only use it later if
+ * lp_dmapi_support is set on the share, but we need a single global
+ * session to work with.
+ */
+ dmapi_init_session();
+
if (!open_sockets_smbd(is_daemon, interactive, ports))
exit(1);
* everything after this point is run after the fork()
*/
- /* Initialise the password backed before the global_sam_sid
- to ensure that we fetch from ldap before we make a domain sid up */
-
- if(!initialize_password_db(False))
- exit(1);
-
- if(!get_global_sam_sid()) {
- DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
- exit(1);
- }
-
static_init_rpc;
init_modules();
- /* possibly reload the services file. */
- reload_services(True);
+ /* Possibly reload the services file. Only worth doing in
+ * daemon mode. In inetd mode, we know we only just loaded this.
+ */
+ if (is_daemon) {
+ reload_services(True);
+ }
if (!init_account_policy()) {
DEBUG(0,("Could not open account policy tdb.\n"));
if (!init_change_notify())
exit(1);
+ /* Setup aio signal handler. */
+ initialize_async_io_handler();
+
/* re-initialise the timezone */
TimeInit();
/* register our message handlers */
- message_register(MSG_SMB_FORCE_TDIS, msg_force_tdis);
+ message_register(MSG_SMB_FORCE_TDIS, msg_force_tdis, NULL);
smbd_process();
-
- namecache_shutdown();
-
- if (interactive) {
- TALLOC_CTX *mem_ctx = talloc_init("end_description");
- char *description = talloc_describe_all(mem_ctx);
- DEBUG(3, ("tallocs left:\n%s\n", description));
- talloc_destroy(mem_ctx);
- }
+ namecache_shutdown();
- exit_server("normal exit");
+ exit_server_cleanly(NULL);
return(0);
}
git.samba.org / samba.git / blobdiff