explain_setsid_or_die - sets process group ID and report errors

       libexplain version 1.4
       Copyright (C) 2011 Peter Miller

                                                                                        explain_setsid_or_die(3)

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

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

       The explain_setsid_or_die function is intended to be used in a fashion similar to the following example:
              explain_setsid_or_die();

       explain_setsid_or_die - sets process group ID and report errors

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

       The explain_setsid_on_error function always returns the value return  by  the  wrapped  setsid(2)  system
       call.

setsid(2)
               creates a session and sets the process group ID

       explain_setsid(3)
               explain setsid(2) errors

       exit(2) terminate the calling process

       #include <libexplain/setsid.h>
       pid_t explain_setsid_or_die(void);
       pid_t explain_setsid_on_error(void);