debian man page for explain_setgroups_or_die

explain_setgroups_or_die(3)				     Library Functions Manual				       explain_setgroups_or_die(3)

NAME
       explain_setgroups_or_die - set supplementary group IDs and report errors

SYNOPSIS
       #include <libexplain/setgroups.h>
       void explain_setgroups_or_die(size_t data_size, const gid_t *data);
       int explain_setgroups_on_error(size_t data_size, const gid_t *data);

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

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

       data_size
	       The data_size, exactly as to be passed to the setgroups(2) system call.

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

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

       The explain_setgroups_on_error function always returns the value return by the wrapped setgroups(2) system call.

EXAMPLE
       The explain_setgroups_or_die function is intended to be used in a fashion similar to the following example:
	      explain_setgroups_or_die(data_size, data);

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

       explain_setgroups(3)
	       explain setgroups(2) errors

       exit(2) terminate the calling process

COPYRIGHT
       libexplain version 0.52
       Copyright (C) 2009 Peter Miller

														       explain_setgroups_or_die(3)