/*
Reopen the port handle when our pid changes.
*/
static int port_check_reopen(struct port_event_context *port_ev)
{
struct tevent_fd *fde;
if (port_ev->pid == getpid()) {
return 0;
}
close(port_ev->port_fd);
port_ev->port_fd = port_create();
if (port_ev->port_fd == -1) {
tevent_debug(port_ev->ev, TEVENT_DEBUG_FATAL,
"port_create() failed");
return -1;
}
if (!ev_set_close_on_exec(port_ev->port_fd)) {
tevent_debug(port_ev->ev, TEVENT_DEBUG_WARNING,
"Failed to set close-on-exec, file descriptor may be leaked to children.\n");
}
port_ev->pid = getpid();
for (fde=port_ev->ev->fd_events;fde;fde=fde->next) {
fde->additional_flags &= PORT_ADDITIONAL_FD_FLAG_HAS_ASSOCIATION;
if (port_update_event(port_ev, fde) != 0) {
return -1;
}
}
return 0;
}
/*
reopen the epoll handle when our pid changes
see http://junkcode.samba.org/ftp/unpacked/junkcode/epoll_fork.c for an
demonstration of why this is needed
*/
static void epoll_check_reopen(struct epoll_event_context *epoll_ev)
{
struct tevent_fd *fde;
if (epoll_ev->pid == getpid()) {
return;
}
close(epoll_ev->epoll_fd);
epoll_ev->epoll_fd = epoll_create(64);
if (epoll_ev->epoll_fd == -1) {
tevent_debug(epoll_ev->ev, TEVENT_DEBUG_FATAL,
"Failed to recreate epoll handle after fork\n");
return;
}
if (!ev_set_close_on_exec(epoll_ev->epoll_fd)) {
tevent_debug(epoll_ev->ev, TEVENT_DEBUG_WARNING,
"Failed to set close-on-exec, file descriptor may be leaked to children.\n");
}
epoll_ev->pid = getpid();
for (fde=epoll_ev->ev->fd_events;fde;fde=fde->next) {
epoll_add_event(epoll_ev, fde);
}
}
/*
Init the port fd
*/
static int port_init_ctx(struct port_event_context *port_ev)
{
port_ev->port_fd = port_create();
if (port_ev->port_fd == -1) {
tevent_debug(port_ev->ev, TEVENT_DEBUG_FATAL,
"Failed to create port handle.\n");
return -1;
}
if (!ev_set_close_on_exec(port_ev->port_fd)) {
tevent_debug(port_ev->ev, TEVENT_DEBUG_WARNING,
"Failed to set close-on-exec, file descriptor may be leaked to children.\n");
}
port_ev->pid = getpid();
talloc_set_destructor(port_ev, port_ctx_destructor);
return 0;
}
/*
init the epoll fd
*/
static int epoll_init_ctx(struct epoll_event_context *epoll_ev)
{
epoll_ev->epoll_fd = epoll_create(64);
if (epoll_ev->epoll_fd == -1) {
tevent_debug(epoll_ev->ev, TEVENT_DEBUG_FATAL,
"Failed to create epoll handle.\n");
return -1;
}
if (!ev_set_close_on_exec(epoll_ev->epoll_fd)) {
tevent_debug(epoll_ev->ev, TEVENT_DEBUG_WARNING,
"Failed to set close-on-exec, file descriptor may be leaked to children.\n");
}
epoll_ev->pid = getpid();
talloc_set_destructor(epoll_ev, epoll_ctx_destructor);
return 0;
}
/*
reopen the epoll handle when our pid changes
see http://junkcode.samba.org/ftp/unpacked/junkcode/epoll_fork.c for an
demonstration of why this is needed
*/
static void epoll_check_reopen(struct epoll_event_context *epoll_ev)
{
struct tevent_fd *fde;
bool *caller_panic_state = epoll_ev->panic_state;
bool panic_triggered = false;
if (epoll_ev->pid == getpid()) {
return;
}
close(epoll_ev->epoll_fd);
epoll_ev->epoll_fd = epoll_create(64);
if (epoll_ev->epoll_fd == -1) {
epoll_panic(epoll_ev, "epoll_create() failed", false);
return;
}
if (!ev_set_close_on_exec(epoll_ev->epoll_fd)) {
tevent_debug(epoll_ev->ev, TEVENT_DEBUG_WARNING,
"Failed to set close-on-exec, file descriptor may be leaked to children.\n");
}
epoll_ev->pid = getpid();
epoll_ev->panic_state = &panic_triggered;
for (fde=epoll_ev->ev->fd_events;fde;fde=fde->next) {
fde->additional_flags &= ~EPOLL_ADDITIONAL_FD_FLAG_HAS_EVENT;
epoll_update_event(epoll_ev, fde);
if (panic_triggered) {
if (caller_panic_state != NULL) {
*caller_panic_state = true;
}
return;
}
}
epoll_ev->panic_state = NULL;
}
struct tevent_thread_proxy *tevent_thread_proxy_create(
struct tevent_context *dest_ev_ctx)
{
int ret;
int pipefds[2];
struct tevent_thread_proxy *tp;
tp = talloc_zero(dest_ev_ctx, struct tevent_thread_proxy);
if (tp == NULL) {
return NULL;
}
ret = pthread_mutex_init(&tp->mutex, NULL);
if (ret != 0) {
goto fail;
}
tp->dest_ev_ctx = dest_ev_ctx;
tp->read_fd = -1;
tp->write_fd = -1;
talloc_set_destructor(tp, tevent_thread_proxy_destructor);
ret = pipe(pipefds);
if (ret == -1) {
goto fail;
}
tp->read_fd = pipefds[0];
tp->write_fd = pipefds[1];
ret = ev_set_blocking(pipefds[0], false);
if (ret != 0) {
goto fail;
}
ret = ev_set_blocking(pipefds[1], false);
if (ret != 0) {
goto fail;
}
if (!ev_set_close_on_exec(pipefds[0])) {
goto fail;
}
if (!ev_set_close_on_exec(pipefds[1])) {
goto fail;
}
tp->pipe_read_fde = tevent_add_fd(dest_ev_ctx,
tp,
tp->read_fd,
TEVENT_FD_READ,
pipe_read_handler,
tp);
if (tp->pipe_read_fde == NULL) {
goto fail;
}
/*
* Create an immediate event to free
* completed lists.
*/
tp->free_im = tevent_create_immediate(tp);
if (tp->free_im == NULL) {
goto fail;
}
return tp;
fail:
TALLOC_FREE(tp);
return NULL;
}
