NAME

       explain_getgroups_or_die - get supplementary group IDs and report errors

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, obtained 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 getgroups(2) system call. On
       failure an explanation will be printed to stderr, obtained from  the  explain_getgroups(3)
       function, but still returns to the caller.

       data_size
               The data_size, exactly as to be passed to the getgroups(2) system 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 getgroups(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 fashion 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 0.52
       Copyright (C) 2009 Peter Miller

                                                                      explain_getgroups_or_die(3)