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-rw-r--r--source3/winbindd/winbindd.c227
-rw-r--r--source3/winbindd/winbindd_dual.c11
-rw-r--r--source3/winbindd/winbindd_proto.h4
3 files changed, 165 insertions, 77 deletions
diff --git a/source3/winbindd/winbindd.c b/source3/winbindd/winbindd.c
index fad27ea224..5720bfc517 100644
--- a/source3/winbindd/winbindd.c
+++ b/source3/winbindd/winbindd.c
@@ -173,36 +173,161 @@ static void terminate(bool is_parent)
exit(0);
}
-static SIG_ATOMIC_T do_sigterm = 0;
+static void winbindd_sig_term_handler(struct tevent_context *ev,
+ struct tevent_signal *se,
+ int signum,
+ int count,
+ void *siginfo,
+ void *private_data)
+{
+ bool *is_parent = talloc_get_type_abort(private_data, bool);
+
+ DEBUG(0,("Got sig[%d] terminate (is_parent=%d)\n",
+ signum, (int)*is_parent));
+ terminate(*is_parent);
+}
-static void termination_handler(int signum)
+bool winbindd_setup_sig_term_handler(bool parent)
{
- do_sigterm = 1;
- sys_select_signal(signum);
+ struct tevent_signal *se;
+ bool *is_parent;
+
+ is_parent = talloc(winbind_event_context(), bool);
+ if (!is_parent) {
+ return false;
+ }
+
+ *is_parent = parent;
+
+ se = tevent_add_signal(winbind_event_context(),
+ is_parent,
+ SIGTERM, 0,
+ winbindd_sig_term_handler,
+ is_parent);
+ if (!se) {
+ DEBUG(0,("failed to setup SIGTERM handler"));
+ talloc_free(is_parent);
+ return false;
+ }
+
+ se = tevent_add_signal(winbind_event_context(),
+ is_parent,
+ SIGINT, 0,
+ winbindd_sig_term_handler,
+ is_parent);
+ if (!se) {
+ DEBUG(0,("failed to setup SIGINT handler"));
+ talloc_free(is_parent);
+ return false;
+ }
+
+ se = tevent_add_signal(winbind_event_context(),
+ is_parent,
+ SIGQUIT, 0,
+ winbindd_sig_term_handler,
+ is_parent);
+ if (!se) {
+ DEBUG(0,("failed to setup SIGINT handler"));
+ talloc_free(is_parent);
+ return false;
+ }
+
+ return true;
}
-static SIG_ATOMIC_T do_sigusr2 = 0;
+static void winbindd_sig_hup_handler(struct tevent_context *ev,
+ struct tevent_signal *se,
+ int signum,
+ int count,
+ void *siginfo,
+ void *private_data)
+{
+ const char *file = (const char *)private_data;
+
+ DEBUG(1,("Reloading services after SIGHUP\n"));
+ flush_caches();
+ reload_services_file(file);
+}
-static void sigusr2_handler(int signum)
+bool winbindd_setup_sig_hup_handler(const char *lfile)
{
- do_sigusr2 = 1;
- sys_select_signal(SIGUSR2);
+ struct tevent_signal *se;
+ char *file = NULL;
+
+ if (lfile) {
+ file = talloc_strdup(winbind_event_context(),
+ lfile);
+ if (!file) {
+ return false;
+ }
+ }
+
+ se = tevent_add_signal(winbind_event_context(),
+ winbind_event_context(),
+ SIGHUP, 0,
+ winbindd_sig_hup_handler,
+ file);
+ if (!se) {
+ return false;
+ }
+
+ return true;
}
-static SIG_ATOMIC_T do_sighup = 0;
+static void winbindd_sig_chld_handler(struct tevent_context *ev,
+ struct tevent_signal *se,
+ int signum,
+ int count,
+ void *siginfo,
+ void *private_data)
+{
+ pid_t pid;
+
+ while ((pid = sys_waitpid(-1, NULL, WNOHANG)) > 0) {
+ winbind_child_died(pid);
+ }
+}
-static void sighup_handler(int signum)
+static bool winbindd_setup_sig_chld_handler(void)
{
- do_sighup = 1;
- sys_select_signal(SIGHUP);
+ struct tevent_signal *se;
+
+ se = tevent_add_signal(winbind_event_context(),
+ winbind_event_context(),
+ SIGCHLD, 0,
+ winbindd_sig_chld_handler,
+ NULL);
+ if (!se) {
+ return false;
+ }
+
+ return true;
}
-static SIG_ATOMIC_T do_sigchld = 0;
+static void winbindd_sig_usr2_handler(struct tevent_context *ev,
+ struct tevent_signal *se,
+ int signum,
+ int count,
+ void *siginfo,
+ void *private_data)
+{
+ print_winbindd_status();
+}
-static void sigchld_handler(int signum)
+static bool winbindd_setup_sig_usr2_handler(void)
{
- do_sigchld = 1;
- sys_select_signal(SIGCHLD);
+ struct tevent_signal *se;
+
+ se = tevent_add_signal(winbind_event_context(),
+ winbind_event_context(),
+ SIGCHLD, 0,
+ winbindd_sig_usr2_handler,
+ NULL);
+ if (!se) {
+ return false;
+ }
+
+ return true;
}
/* React on 'smbcontrol winbindd reload-config' in the same way as on SIGHUP*/
@@ -224,7 +349,9 @@ static void msg_shutdown(struct messaging_context *msg,
struct server_id server_id,
DATA_BLOB *data)
{
- do_sigterm = 1;
+ /* only the parent waits for this message */
+ DEBUG(0,("Got shutdown message\n"));
+ terminate(true);
}
@@ -797,27 +924,6 @@ static bool remove_idle_client(void)
return False;
}
-/* check if HUP has been received and reload files */
-void winbind_check_sighup(const char *lfile)
-{
- if (do_sighup) {
-
- DEBUG(3, ("got SIGHUP\n"));
-
- flush_caches();
- reload_services_file(lfile);
-
- do_sighup = 0;
- }
-}
-
-/* check if TERM has been received */
-void winbind_check_sigterm(bool is_parent)
-{
- if (do_sigterm)
- terminate(is_parent);
-}
-
/* Process incoming clients on listen_sock. We use a tricky non-blocking,
non-forking, non-threaded model which allows us to handle many
simultaneous connections while remaining impervious to many denial of
@@ -979,26 +1085,6 @@ static void process_loop(void)
#if 0
winbindd_check_cache_size(time(NULL));
#endif
-
- /* Check signal handling things */
-
- winbind_check_sigterm(true);
- winbind_check_sighup(NULL);
-
- if (do_sigusr2) {
- print_winbindd_status();
- do_sigusr2 = 0;
- }
-
- if (do_sigchld) {
- pid_t pid;
-
- do_sigchld = 0;
-
- while ((pid = sys_waitpid(-1, NULL, WNOHANG)) > 0) {
- winbind_child_died(pid);
- }
- }
}
/* Main function */
@@ -1168,18 +1254,6 @@ int main(int argc, char **argv, char **envp)
BlockSignals(False, SIGHUP);
BlockSignals(False, SIGCHLD);
- /* Setup signal handlers */
-
- CatchSignal(SIGINT, termination_handler); /* Exit on these sigs */
- CatchSignal(SIGQUIT, termination_handler);
- CatchSignal(SIGTERM, termination_handler);
- CatchSignal(SIGCHLD, sigchld_handler);
-
- CatchSignal(SIGPIPE, SIG_IGN); /* Ignore sigpipe */
-
- CatchSignal(SIGUSR2, sigusr2_handler); /* Debugging sigs */
- CatchSignal(SIGHUP, sighup_handler);
-
if (!interactive)
become_daemon(Fork, no_process_group);
@@ -1207,6 +1281,19 @@ int main(int argc, char **argv, char **envp)
exit(1);
}
+ /* Setup signal handlers */
+
+ if (!winbindd_setup_sig_term_handler(true))
+ exit(1);
+ if (!winbindd_setup_sig_hup_handler(NULL))
+ exit(1);
+ if (!winbindd_setup_sig_chld_handler())
+ exit(1);
+ if (!winbindd_setup_sig_usr2_handler())
+ exit(1);
+
+ CatchSignal(SIGPIPE, SIG_IGN); /* Ignore sigpipe */
+
/*
* Ensure all cache and idmap caches are consistent
* and initialized before we startup.
diff --git a/source3/winbindd/winbindd_dual.c b/source3/winbindd/winbindd_dual.c
index c320e96746..1385c76bae 100644
--- a/source3/winbindd/winbindd_dual.c
+++ b/source3/winbindd/winbindd_dual.c
@@ -1160,6 +1160,12 @@ bool winbindd_reinit_after_fork(const char *logfilename)
reopen_logs();
}
+ if (!winbindd_setup_sig_term_handler(false))
+ return false;
+ if (!winbindd_setup_sig_hup_handler(override_logfile ? NULL :
+ logfilename))
+ return false;
+
/* Don't handle the same messages as our parent. */
messaging_deregister(winbind_messaging_context(),
MSG_SMB_CONF_UPDATED, NULL);
@@ -1379,11 +1385,6 @@ static bool fork_domain_child(struct winbindd_child *child)
struct timeval now;
TALLOC_CTX *frame = talloc_stackframe();
- /* check for signals */
- winbind_check_sigterm(false);
- winbind_check_sighup(override_logfile ? NULL :
- child->logfilename);
-
if (run_events(winbind_event_context(), 0, NULL, NULL)) {
TALLOC_FREE(frame);
continue;
diff --git a/source3/winbindd/winbindd_proto.h b/source3/winbindd/winbindd_proto.h
index 594f8be942..d72351d021 100644
--- a/source3/winbindd/winbindd_proto.h
+++ b/source3/winbindd/winbindd_proto.h
@@ -63,8 +63,8 @@ void setup_async_write(struct winbindd_fd_event *event, void *data, size_t lengt
void *private_data);
void request_error(struct winbindd_cli_state *state);
void request_ok(struct winbindd_cli_state *state);
-void winbind_check_sighup(const char *lfile);
-void winbind_check_sigterm(bool in_parent);
+bool winbindd_setup_sig_term_handler(bool parent);
+bool winbindd_setup_sig_hup_handler(const char *logfile);
int main(int argc, char **argv, char **envp);
/* The following definitions come from winbindd/winbindd_reqtrans.c */
generated by cgit (git 2.34.1) at 2024-12-01 12:11:00 +0000