along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-#include <signal.h>
#include "replace.h"
#include "system/filesys.h"
-#include "system/select.h"
+#include "system/wait.h"
#include "tevent.h"
#include "tevent_internal.h"
#include "tevent_util.h"
#define SIG_SEEN(s, n) (s).seen += (n)
#define SIG_PENDING(s) ((s).seen != (s).count)
+struct tevent_common_signal_list {
+ struct tevent_common_signal_list *prev, *next;
+ struct tevent_signal *se;
+};
/*
the poor design of signals means that this table must be static global
*/
static struct sig_state {
- struct signal_event *sig_handlers[NUM_SIGNALS+1];
+ struct tevent_common_signal_list *sig_handlers[NUM_SIGNALS+1];
struct sigaction *oldact[NUM_SIGNALS+1];
struct sigcounter signal_count[NUM_SIGNALS+1];
struct sigcounter got_signal;
/*
signal handler - redirects to registered signals
*/
-static void signal_handler(int signum)
+static void tevent_common_signal_handler(int signum)
{
char c = 0;
SIG_INCREMENT(sig_state->signal_count[signum]);
/*
signal handler with SA_SIGINFO - redirects to registered signals
*/
-static void signal_handler_info(int signum, siginfo_t *info, void *uctx)
+static void tevent_common_signal_handler_info(int signum, siginfo_t *info,
+ void *uctx)
{
uint32_t count = sig_count(sig_state->signal_count[signum]);
sig_state->sig_info[signum][count] = *info;
- signal_handler(signum);
+ tevent_common_signal_handler(signum);
/* handle SA_SIGINFO */
if (count+1 == SA_INFO_QUEUE_COUNT) {
}
#endif
+static int tevent_common_signal_list_destructor(struct tevent_common_signal_list *sl)
+{
+ DLIST_REMOVE(sig_state->sig_handlers[sl->se->signum], sl);
+ return 0;
+}
+
/*
destroy a signal event
*/
-static int signal_event_destructor(struct signal_event *se)
+static int tevent_signal_destructor(struct tevent_signal *se)
{
- se->event_ctx->num_signal_handlers--;
- DLIST_REMOVE(sig_state->sig_handlers[se->signum], se);
+ struct tevent_common_signal_list *sl;
+ sl = talloc_get_type(se->additional_data,
+ struct tevent_common_signal_list);
+
+ if (se->event_ctx) {
+ DLIST_REMOVE(se->event_ctx->signal_events, se);
+ }
+
+ talloc_free(sl);
+
if (sig_state->sig_handlers[se->signum] == NULL) {
/* restore old handler, if any */
sigaction(se->signum, sig_state->oldact[se->signum], NULL);
}
#endif
}
+
return 0;
}
/*
this is part of the pipe hack needed to avoid the signal race condition
*/
-static void signal_pipe_handler(struct event_context *ev, struct fd_event *fde,
+static void signal_pipe_handler(struct tevent_context *ev, struct tevent_fd *fde,
uint16_t flags, void *private)
{
char c[16];
add a signal event
return NULL on failure (memory allocation error)
*/
-struct signal_event *common_event_add_signal(struct event_context *ev,
- TALLOC_CTX *mem_ctx,
- int signum,
- int sa_flags,
- event_signal_handler_t handler,
- void *private_data)
+struct tevent_signal *tevent_common_add_signal(struct tevent_context *ev,
+ TALLOC_CTX *mem_ctx,
+ int signum,
+ int sa_flags,
+ tevent_signal_handler_t handler,
+ void *private_data,
+ const char *handler_name,
+ const char *location)
{
- struct signal_event *se;
+ struct tevent_signal *se;
+ struct tevent_common_signal_list *sl;
if (signum >= NUM_SIGNALS) {
+ errno = EINVAL;
return NULL;
}
}
}
- se = talloc(mem_ctx?mem_ctx:ev, struct signal_event);
+ se = talloc(mem_ctx?mem_ctx:ev, struct tevent_signal);
if (se == NULL) return NULL;
se->event_ctx = ev;
- se->handler = handler;
- se->private_data = private_data;
se->signum = signum;
se->sa_flags = sa_flags;
-
+ se->handler = handler;
+ se->private_data = private_data;
+ se->handler_name = handler_name;
+ se->location = location;
+ se->additional_data = NULL;
+
+ sl = talloc(se, struct tevent_common_signal_list);
+ if (!sl) {
+ talloc_free(se);
+ return NULL;
+ }
+ sl->se = se;
+ se->additional_data = sl;
+
/* Ensure, no matter the destruction order, that we always have a handle on the global sig_state */
if (!talloc_reference(se, sig_state)) {
+ talloc_free(se);
return NULL;
}
if (sig_state->sig_handlers[signum] == NULL) {
struct sigaction act;
ZERO_STRUCT(act);
- act.sa_handler = signal_handler;
+ act.sa_handler = tevent_common_signal_handler;
act.sa_flags = sa_flags;
#ifdef SA_SIGINFO
if (sa_flags & SA_SIGINFO) {
act.sa_handler = NULL;
- act.sa_sigaction = signal_handler_info;
+ act.sa_sigaction = tevent_common_signal_handler_info;
if (sig_state->sig_info[signum] == NULL) {
sig_state->sig_info[signum] = talloc_array(sig_state, siginfo_t, SA_INFO_QUEUE_COUNT);
if (sig_state->sig_info[signum] == NULL) {
}
}
- DLIST_ADD(sig_state->sig_handlers[signum], se);
+ DLIST_ADD(se->event_ctx->signal_events, se);
+ DLIST_ADD(sig_state->sig_handlers[signum], sl);
- talloc_set_destructor(se, signal_event_destructor);
+ talloc_set_destructor(se, tevent_signal_destructor);
+ talloc_set_destructor(sl, tevent_common_signal_list_destructor);
/* we need to setup the pipe hack handler if not already
setup */
ev_set_blocking(sig_state->pipe_hack[0], false);
ev_set_blocking(sig_state->pipe_hack[1], false);
}
- ev->pipe_fde = event_add_fd(ev, ev, sig_state->pipe_hack[0],
- EVENT_FD_READ, signal_pipe_handler, NULL);
+ ev->pipe_fde = tevent_add_fd(ev, ev, sig_state->pipe_hack[0],
+ TEVENT_FD_READ, signal_pipe_handler, NULL);
+ if (!ev->pipe_fde) {
+ talloc_free(se);
+ return NULL;
+ }
}
- ev->num_signal_handlers++;
return se;
}
check if a signal is pending
return != 0 if a signal was pending
*/
-int common_event_check_signal(struct event_context *ev)
+int tevent_common_check_signal(struct tevent_context *ev)
{
int i;
}
for (i=0;i<NUM_SIGNALS+1;i++) {
- struct signal_event *se, *next;
+ struct tevent_common_signal_list *sl, *next;
struct sigcounter counter = sig_state->signal_count[i];
uint32_t count = sig_count(counter);
if (count == 0) {
continue;
}
- for (se=sig_state->sig_handlers[i];se;se=next) {
- next = se->next;
+ for (sl=sig_state->sig_handlers[i];sl;sl=next) {
+ struct tevent_signal *se = sl->se;
+ next = sl->next;
#ifdef SA_SIGINFO
if (se->sa_flags & SA_SIGINFO) {
int j;
git.samba.org / tprouty / samba.git / blobdiff