os_win32/popen.h

   1 /*
   2  * os_win32/popen.h
   3  *
   4  * Home page of code is: https://www.smartmontools.org
   5  *
   6  * Copyright (C) 2018 Christian Franke
   7  *
   8  * SPDX-License-Identifier: GPL-2.0-or-later
   9  */
  10
  11 #ifndef POPEN_H
  12 #define POPEN_H
  13
  14 #define POPEN_H_CVSID "$Id: popen.h 4818 2018-10-17 05:32:17Z chrfranke $"
  15
  16 #include <stdio.h>
  17
  18 // MinGW <stdio.h> defines these to _popen/_pclose
  19 #undef popen
  20 #undef pclose
  21
  22 #ifdef __cplusplus
  23 extern "C" {
  24 #endif
  25
  26 // popen(3) reimplementation for Windows
  27 //
  28 // The _popen() from MSVCRT is not useful as it always opens a new
  29 // console window if parent process has none.
  30 //
  31 // Differences to popen(3):
  32 // - Only modes "r[bt]" are supported
  33 // - stdin and stderr from parent are not inherited to child process
  34 //   but redirected to null device
  35 // - Only one child process can be run at a time
  36
  37 FILE * popen(const char * command, const char * mode);
  38
  39 int pclose(FILE * f);
  40
  41 #ifdef __cplusplus
  42 }
  43 #endif
  44
  45 // wait(3) macros from <sys/wait.h>
  46 #ifndef WIFEXITED
  47 #define WIFEXITED(status)   (((status) & 0xff) == 0x00)
  48 #define WIFSIGNALED(status) (((status) & 0xff) != 0x00)
  49 #define WIFSTOPPED(status)  (0)
  50 #define WEXITSTATUS(status) ((status) >> 8)
  51 #define WTERMSIG(status)    ((status) & 0xff)
  52 #define WSTOPSIG(status)    (0)
  53 #endif // WIFEXITED
  54
  55 #endif // POPEN_H