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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) sys-
       tem 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, ob-
       tained 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 1.3
       Copyright (C) 2011 Peter	Miller

						     explain_setpgid_or_die(3)

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | EXAMPLE | SEE ALSO | COPYRIGHT

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