src/lib/process/process_unix.h

   1 /* Copyright (c) 2003-2004, Roger Dingledine
   2  * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
   3  * Copyright (c) 2007-2021, The Tor Project, Inc. */
   4 /* See LICENSE for licensing information */
   5
   6 /**
   7  * \file process_unix.h
   8  * \brief Header for process_unix.c
   9  **/
  10
  11 #ifndef TOR_PROCESS_UNIX_H
  12 #define TOR_PROCESS_UNIX_H
  13
  14 #ifndef _WIN32
  15
  16 #include "orconfig.h"
  17 #include "lib/malloc/malloc.h"
  18
  19 #include <event2/event.h>
  20
  21 struct process_t;
  22
  23 struct process_unix_t;
  24 typedef struct process_unix_t process_unix_t;
  25
  26 process_unix_t *process_unix_new(void);
  27 void process_unix_free_(process_unix_t *unix_process);
  28 #define process_unix_free(s) \
  29   FREE_AND_NULL(process_unix_t, process_unix_free_, (s))
  30
  31 process_status_t process_unix_exec(struct process_t *process);
  32 bool process_unix_terminate(struct process_t *process);
  33
  34 process_pid_t process_unix_get_pid(struct process_t *process);
  35
  36 int process_unix_write(struct process_t *process, buf_t *buffer);
  37 int process_unix_read_stdout(struct process_t *process, buf_t *buffer);
  38 int process_unix_read_stderr(struct process_t *process, buf_t *buffer);
  39
  40 #ifdef PROCESS_UNIX_PRIVATE
  41 struct process_unix_handle_t;
  42 typedef struct process_unix_handle_t process_unix_handle_t;
  43
  44 STATIC void stdout_read_callback(evutil_socket_t fd, short event, void *data);
  45 STATIC void stderr_read_callback(evutil_socket_t fd, short event, void *data);
  46 STATIC void stdin_write_callback(evutil_socket_t fd, short event, void *data);
  47
  48 STATIC void process_unix_start_reading(process_unix_handle_t *);
  49 STATIC void process_unix_stop_reading(process_unix_handle_t *);
  50
  51 STATIC void process_unix_start_writing(process_unix_handle_t *);
  52 STATIC void process_unix_stop_writing(process_unix_handle_t *);
  53
  54 STATIC void process_unix_waitpid_callback(int status, void *data);
  55
  56 STATIC void process_unix_setup_handle(process_t *process,
  57                                       process_unix_handle_t *handle,
  58                                       short flags,
  59                                       event_callback_fn callback);
  60 STATIC int process_unix_read_handle(process_t *,
  61                                     process_unix_handle_t *,
  62                                     buf_t *);
  63 STATIC bool process_unix_close_file_descriptors(process_unix_t *);
  64 #endif /* defined(PROCESS_UNIX_PRIVATE) */
  65
  66 #endif /* !defined(_WIN32) */
  67
  68 #endif /* !defined(TOR_PROCESS_UNIX_H) */