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explain_getgroups_or_die(3)Library Functions Manualexplain_getgroups_or_die(3)

NAME
       explain_getgroups_or_die	 -  get	supplementary group IDs	and report er-
       rors

SYNOPSIS
       #include	<libexplain/getgroups.h>
       void explain_getgroups_or_die(int data_size, gid_t *data);
       int explain_getgroups_on_error(int data_size, gid_t *data);

DESCRIPTION
       The explain_getgroups_or_die function is	used to	call the  getgroups(2)
       system  call.  On failure an explanation	will be	printed	to stderr, ob-
       tained from the explain_getgroups(3) function,  and  then  the  process
       terminates by calling exit(EXIT_FAILURE).

       The  explain_getgroups_on_error	function  is  used  to	call  the get-
       groups(2) system	call. On failure an explanation	 will  be  printed  to
       stderr,	obtained from the explain_getgroups(3) function, but still re-
       turns to	the caller.

       data_size
	       The data_size, exactly as to be passed to the getgroups(2) sys-
	       tem call.

       data    The  data,  exactly  as to be passed to the getgroups(2)	system
	       call.

RETURN VALUE
       The explain_getgroups_or_die function only returns on success, see get-
       groups(2)  for  more information. On failure, prints an explanation and
       exits, it does not return.

       The explain_getgroups_on_error function always returns the value	return
       by the wrapped getgroups(2) system call.

EXAMPLE
       The explain_getgroups_or_die function is	intended to be used in a fash-
       ion similar to the following example:
	      explain_getgroups_or_die(data_size, data);

SEE ALSO
       getgroups(2)
	       get/set list of supplementary group IDs

       explain_getgroups(3)
	       explain getgroups(2) errors

       exit(2) terminate the calling process

COPYRIGHT
       libexplain version 1.3
       Copyright (C) 2009 Peter	Miller

						   explain_getgroups_or_die(3)

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

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