explain_setpgid_or_die(3)				     Library Functions Manual					 explain_setpgid_or_die(3)

NAME

       explain_setpgid_or_die - set process group and report errors

SYNOPSIS

       #include <libexplain/setpgid.h>
       void explain_setpgid_or_die(pid_t pid, pid_t pgid);
       int explain_setpgid_on_error(pid_t pid, pid_t pgid);

DESCRIPTION

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

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

       pid     The pid, exactly as to be passed to the setpgid(2) system call.

       pgid    The pgid, exactly as to be passed to the setpgid(2) system call.

RETURN VALUE

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

       The explain_setpgid_on_error function always returns the value return by the wrapped setpgid(2) system call.

EXAMPLE

       The explain_setpgid_or_die function is intended to be used in a fashion similar to the following example:
	      explain_setpgid_or_die(pid, pgid);

SEE ALSO

       setpgid(2)
	       set process group

       explain_setpgid(3)
	       explain setpgid(2) errors

       exit(2) terminate the calling process

COPYRIGHT

       libexplain version 0.52
       Copyright (C) 2011 Peter Miller

															 explain_setpgid_or_die(3)