static void onefork_reload_after_fork(void)
{
ldb_wrap_fork_hook();
/* Ensure that the forked children do not expose identical random streams */
set_need_random_reseed();
}
/*
called to create a new server task
*/
static void standard_new_task(struct tevent_context *ev,
struct loadparm_context *lp_ctx,
const char *service_name,
void (*new_task)(struct tevent_context *, struct loadparm_context *lp_ctx, struct server_id , void *),
void *private_data)
{
pid_t pid;
struct tevent_context *ev2;
pid = fork();
if (pid != 0) {
/* parent or error code ... go back to the event loop */
return;
}
pid = getpid();
/* This is now the child code. We need a completely new event_context to work with */
ev2 = s4_event_context_init(NULL);
/* setup this as the default context */
s4_event_context_set_default(ev2);
/* the service has given us a private pointer that
encapsulates the context it needs for this new connection -
everything else will be freed */
talloc_steal(ev2, private_data);
/* this will free all the listening sockets and all state that
is not associated with this new connection */
talloc_free(ev);
/* ldb/tdb need special fork handling */
ldb_wrap_fork_hook();
tevent_add_fd(ev2, ev2, child_pipe[0], TEVENT_FD_READ,
standard_pipe_handler, NULL);
close(child_pipe[1]);
/* Ensure that the forked children do not expose identical random streams */
set_need_random_reseed();
setproctitle("task %s server_id[%d]", service_name, pid);
/* setup this new task. Cluster ID is PID based for this process modal */
new_task(ev2, lp_ctx, cluster_id(pid, 0), private_data);
/* we can't return to the top level here, as that event context is gone,
so we now process events in the new event context until there are no
more to process */
event_loop_wait(ev2);
talloc_free(ev2);
exit(0);
}
static void prefork_reload_after_fork(void)
{
NTSTATUS status;
ldb_wrap_fork_hook();
/* Must be done after a fork() to reset messaging contexts. */
status = imessaging_reinit_all();
if (!NT_STATUS_IS_OK(status)) {
smb_panic("Failed to re-initialise imessaging after fork");
}
}
/*
called to create a new server task
*/
static void standard_new_task(struct tevent_context *ev,
struct loadparm_context *lp_ctx,
const char *service_name,
void (*new_task)(struct tevent_context *, struct loadparm_context *lp_ctx, struct server_id , void *),
void *private_data)
{
pid_t pid;
pid = fork();
if (pid != 0) {
/* parent or error code ... go back to the event loop */
return;
}
pid = getpid();
/* this will free all the listening sockets and all state that
is not associated with this new connection */
if (tevent_re_initialise(ev) != 0) {
smb_panic("Failed to re-initialise tevent after fork");
}
/* ldb/tdb need special fork handling */
ldb_wrap_fork_hook();
tevent_add_fd(ev, ev, child_pipe[0], TEVENT_FD_READ,
standard_pipe_handler, NULL);
close(child_pipe[1]);
/* Ensure that the forked children do not expose identical random streams */
set_need_random_reseed();
setproctitle("task %s server_id[%d]", service_name, (int)pid);
/* setup this new task. Cluster ID is PID based for this process modal */
new_task(ev, lp_ctx, cluster_id(pid, 0), private_data);
/* we can't return to the top level here, as that event context is gone,
so we now process events in the new event context until there are no
more to process */
event_loop_wait(ev);
talloc_free(ev);
exit(0);
}
/*
called to create a new server task
*/
static void standard_new_task(struct tevent_context *ev,
struct loadparm_context *lp_ctx,
const char *service_name,
void (*new_task)(struct tevent_context *, struct loadparm_context *lp_ctx, struct server_id , void *),
void *private_data)
{
pid_t pid;
NTSTATUS status;
struct standard_child_state *state;
struct tevent_fd *fde = NULL;
struct tevent_signal *se = NULL;
state = setup_standard_child_pipe(ev, service_name);
if (state == NULL) {
return;
}
pid = fork();
if (pid != 0) {
close(state->to_parent_fd);
state->to_parent_fd = -1;
if (pid > 0) {
state->pid = pid;
} else {
TALLOC_FREE(state);
}
/* parent or error code ... go back to the event loop */
return;
}
/* this leaves state->to_parent_fd open */
TALLOC_FREE(state);
pid = getpid();
/* this will free all the listening sockets and all state that
is not associated with this new connection */
if (tevent_re_initialise(ev) != 0) {
smb_panic("Failed to re-initialise tevent after fork");
}
/* ldb/tdb need special fork handling */
ldb_wrap_fork_hook();
/* Must be done after a fork() to reset messaging contexts. */
status = imessaging_reinit_all();
if (!NT_STATUS_IS_OK(status)) {
smb_panic("Failed to re-initialise imessaging after fork");
}
fde = tevent_add_fd(ev, ev, child_pipe[0], TEVENT_FD_READ,
standard_pipe_handler, NULL);
if (fde == NULL) {
smb_panic("Failed to add fd handler after fork");
}
if (child_pipe[1] != -1) {
close(child_pipe[1]);
child_pipe[1] = -1;
}
se = tevent_add_signal(ev,
ev,
SIGHUP,
0,
sighup_signal_handler,
NULL);
if (se == NULL) {
smb_panic("Failed to add SIGHUP handler after fork");
}
se = tevent_add_signal(ev,
ev,
SIGTERM,
0,
sigterm_signal_handler,
NULL);
if (se == NULL) {
smb_panic("Failed to add SIGTERM handler after fork");
}
setproctitle("task %s server_id[%d]", service_name, (int)pid);
/* setup this new task. Cluster ID is PID based for this process model */
new_task(ev, lp_ctx, cluster_id(pid, 0), private_data);
/* we can't return to the top level here, as that event context is gone,
so we now process events in the new event context until there are no
more to process */
tevent_loop_wait(ev);
talloc_free(ev);
exit(0);
}
/*
called when a listening socket becomes readable.
*/
static void standard_accept_connection(struct tevent_context *ev,
struct loadparm_context *lp_ctx,
struct socket_context *sock,
void (*new_conn)(struct tevent_context *,
struct loadparm_context *, struct socket_context *,
struct server_id , void *),
void *private_data)
{
NTSTATUS status;
struct socket_context *sock2;
pid_t pid;
struct socket_address *c, *s;
struct standard_child_state *state;
struct tevent_fd *fde = NULL;
struct tevent_signal *se = NULL;
state = setup_standard_child_pipe(ev, NULL);
if (state == NULL) {
return;
}
/* accept an incoming connection. */
status = socket_accept(sock, &sock2);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("standard_accept_connection: accept: %s\n",
nt_errstr(status)));
/* this looks strange, but is correct. We need to throttle things until
the system clears enough resources to handle this new socket */
sleep(1);
close(state->to_parent_fd);
state->to_parent_fd = -1;
TALLOC_FREE(state);
return;
}
pid = fork();
if (pid != 0) {
close(state->to_parent_fd);
state->to_parent_fd = -1;
if (pid > 0) {
state->pid = pid;
} else {
TALLOC_FREE(state);
}
/* parent or error code ... */
talloc_free(sock2);
/* go back to the event loop */
return;
}
/* this leaves state->to_parent_fd open */
TALLOC_FREE(state);
pid = getpid();
/* This is now the child code. We need a completely new event_context to work with */
if (tevent_re_initialise(ev) != 0) {
smb_panic("Failed to re-initialise tevent after fork");
}
/* this will free all the listening sockets and all state that
is not associated with this new connection */
talloc_free(sock);
/* we don't care if the dup fails, as its only a select()
speed optimisation */
socket_dup(sock2);
/* tdb needs special fork handling */
ldb_wrap_fork_hook();
/* Must be done after a fork() to reset messaging contexts. */
status = imessaging_reinit_all();
if (!NT_STATUS_IS_OK(status)) {
smb_panic("Failed to re-initialise imessaging after fork");
}
fde = tevent_add_fd(ev, ev, child_pipe[0], TEVENT_FD_READ,
standard_pipe_handler, NULL);
if (fde == NULL) {
smb_panic("Failed to add fd handler after fork");
}
if (child_pipe[1] != -1) {
close(child_pipe[1]);
child_pipe[1] = -1;
}
se = tevent_add_signal(ev,
ev,
SIGHUP,
0,
sighup_signal_handler,
NULL);
if (se == NULL) {
smb_panic("Failed to add SIGHUP handler after fork");
}
se = tevent_add_signal(ev,
ev,
SIGTERM,
0,
sigterm_signal_handler,
NULL);
if (se == NULL) {
smb_panic("Failed to add SIGTERM handler after fork");
}
/* setup the process title */
c = socket_get_peer_addr(sock2, ev);
s = socket_get_my_addr(sock2, ev);
if (s && c) {
setproctitle("conn c[%s:%u] s[%s:%u] server_id[%d]",
c->addr, c->port, s->addr, s->port, (int)pid);
}
talloc_free(c);
talloc_free(s);
/* setup this new connection. Cluster ID is PID based for this process model */
new_conn(ev, lp_ctx, sock2, cluster_id(pid, 0), private_data);
/* we can't return to the top level here, as that event context is gone,
so we now process events in the new event context until there are no
more to process */
tevent_loop_wait(ev);
talloc_free(ev);
exit(0);
}
/*
called when a listening socket becomes readable.
*/
static void standard_accept_connection(struct tevent_context *ev,
struct loadparm_context *lp_ctx,
struct socket_context *sock,
void (*new_conn)(struct tevent_context *,
struct loadparm_context *, struct socket_context *,
struct server_id , void *),
void *private_data)
{
NTSTATUS status;
struct socket_context *sock2;
pid_t pid;
struct socket_address *c, *s;
/* accept an incoming connection. */
status = socket_accept(sock, &sock2);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("standard_accept_connection: accept: %s\n",
nt_errstr(status)));
/* this looks strange, but is correct. We need to throttle things until
the system clears enough resources to handle this new socket */
sleep(1);
return;
}
pid = fork();
if (pid != 0) {
/* parent or error code ... */
talloc_free(sock2);
/* go back to the event loop */
return;
}
pid = getpid();
/* This is now the child code. We need a completely new event_context to work with */
if (tevent_re_initialise(ev) != 0) {
smb_panic("Failed to re-initialise tevent after fork");
}
/* this will free all the listening sockets and all state that
is not associated with this new connection */
talloc_free(sock);
/* we don't care if the dup fails, as its only a select()
speed optimisation */
socket_dup(sock2);
/* tdb needs special fork handling */
ldb_wrap_fork_hook();
tevent_add_fd(ev, ev, child_pipe[0], TEVENT_FD_READ,
standard_pipe_handler, NULL);
close(child_pipe[1]);
/* Ensure that the forked children do not expose identical random streams */
set_need_random_reseed();
/* setup the process title */
c = socket_get_peer_addr(sock2, ev);
s = socket_get_my_addr(sock2, ev);
if (s && c) {
setproctitle("conn c[%s:%u] s[%s:%u] server_id[%d]",
c->addr, c->port, s->addr, s->port, (int)pid);
}
talloc_free(c);
talloc_free(s);
/* setup this new connection. Cluster ID is PID based for this process modal */
new_conn(ev, lp_ctx, sock2, cluster_id(pid, 0), private_data);
/* we can't return to the top level here, as that event context is gone,
so we now process events in the new event context until there are no
more to process */
event_loop_wait(ev);
talloc_free(ev);
exit(0);
}
