explain_vfork_or_die - create a child process and report errors

       libexplain version 1.4
       Copyright (C) 2009 Peter Miller

                                                                                         explain_vfork_or_die(3)

       The  explain_vfork_or_die  function  is  used to call the vfork(2) system call. On failure an explanation
       will be printed to stderr, obtained from the explain_vfork(3) function, and then the  process  terminates
       by calling exit(EXIT_FAILURE).

       The  explain_vfork_on_error  function is used to call the vfork(2) system call. On failure an explanation
       will be printed to stderr, obtained from the explain_vfork(3) function, but still returns to the caller.

       The explain_vfork_or_die function is intended to be used in a fashion similar to the following example:
              pid_t result = explain_vfork_or_die();

       explain_vfork_or_die - create a child process and report errors

       The explain_vfork_or_die function only returns on success, see vfork(2) for more information. On failure,
       prints an explanation and exits, it does not return.

       The explain_vfork_on_error function always returns the value return by the wrapped vfork(2) system call.

vfork(2)
               create a child process and block parent

       explain_vfork(3)
               explain vfork(2) errors

       exit(2) terminate the calling process

       #include <libexplain/vfork.h>
       pid_t explain_vfork_or_die(void);
       pid_t explain_vfork_on_error(void);