static void multi_server_wakeup(int fd, HTABLE *attr) { VSTREAM *stream; char *tmp; #if defined(F_DUPFD) && (EVENTS_STYLE != EVENTS_STYLE_SELECT) #ifndef THRESHOLD_FD_WORKAROUND #define THRESHOLD_FD_WORKAROUND 128 #endif int new_fd; /* * Leave some handles < FD_SETSIZE for DBMS libraries, in the unlikely * case of a multi-server with a thousand clients. */ if (fd < THRESHOLD_FD_WORKAROUND) { if ((new_fd = fcntl(fd, F_DUPFD, THRESHOLD_FD_WORKAROUND)) < 0) msg_fatal("fcntl F_DUPFD: %m"); (void) close(fd); fd = new_fd; } #endif if (msg_verbose) msg_info("connection established fd %d", fd); non_blocking(fd, BLOCKING); close_on_exec(fd, CLOSE_ON_EXEC); client_count++; stream = vstream_fdopen(fd, O_RDWR); tmp = concatenate(multi_server_name, " socket", (char *) 0); vstream_control(stream, VSTREAM_CTL_PATH, tmp, VSTREAM_CTL_CONTEXT, (char *) attr, VSTREAM_CTL_END); myfree(tmp); timed_ipc_setup(stream); multi_server_saved_flags = vstream_flags(stream); if (multi_server_in_flow_delay && mail_flow_get(1) < 0) event_request_timer(multi_server_enable_read, (char *) stream, var_in_flow_delay); else multi_server_enable_read(0, (char *) stream); }
static void single_server_wakeup(int fd, HTABLE *attr) { VSTREAM *stream; char *tmp; /* * If the accept() succeeds, be sure to disable non-blocking I/O, because * the application is supposed to be single-threaded. Notice the master * of our (un)availability to service connection requests. Commit suicide * when the master process disconnected from us. Don't drop the already * accepted client request after "postfix reload"; that would be rude. */ if (msg_verbose) msg_info("connection established"); non_blocking(fd, BLOCKING); close_on_exec(fd, CLOSE_ON_EXEC); stream = vstream_fdopen(fd, O_RDWR); tmp = concatenate(single_server_name, " socket", (char *) 0); vstream_control(stream, CA_VSTREAM_CTL_PATH(tmp), CA_VSTREAM_CTL_CONTEXT((void *) attr), CA_VSTREAM_CTL_END); myfree(tmp); timed_ipc_setup(stream); if (master_notify(var_pid, single_server_generation, MASTER_STAT_TAKEN) < 0) /* void */ ; if (single_server_in_flow_delay && mail_flow_get(1) < 0) doze(var_in_flow_delay * 1000000); single_server_service(stream, single_server_name, single_server_argv); (void) vstream_fclose(stream); if (master_notify(var_pid, single_server_generation, MASTER_STAT_AVAIL) < 0) single_server_abort(EVENT_NULL_TYPE, EVENT_NULL_CONTEXT); if (msg_verbose) msg_info("connection closed"); /* Avoid integer wrap-around in a persistent process. */ if (use_count < INT_MAX) use_count++; if (var_idle_limit > 0) event_request_timer(single_server_timeout, (void *) 0, var_idle_limit); if (attr) htable_free(attr, myfree); }