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); }