nss/nss.h

   1 /* Copyright (C) 1996, 1997, 1999, 2008 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 /* Define interface to NSS.  This is meant for the interface functions
  20    and for implementors of new services.  */
  21
  22 #ifndef _NSS_H
  23 #define _NSS_H  1
  24
  25 #include <features.h>
  26 #include <stdint.h>
  27
  28
  29 __BEGIN_DECLS
  30
  31 /* Possible results of lookup using a nss_* function.  */
  32 enum nss_status
  33 {
  34   NSS_STATUS_TRYAGAIN = -2,
  35   NSS_STATUS_UNAVAIL,
  36   NSS_STATUS_NOTFOUND,
  37   NSS_STATUS_SUCCESS,
  38   NSS_STATUS_RETURN
  39 };
  40
  41
  42 /* Data structure used for the 'gethostbyname4_r' function.  */
  43 struct gaih_addrtuple
  44   {
  45     struct gaih_addrtuple *next;
  46     char *name;
  47     int family;
  48     uint32_t addr[4];
  49     uint32_t scopeid;
  50   };
  51
  52
  53 /* Overwrite service selection for database DBNAME using specification
  54    in STRING.
  55    This function should only be used by system programs which have to
  56    work around non-existing services (e.e., while booting).
  57    Attention: Using this function repeatedly will slowly eat up the
  58    whole memory since previous selection data cannot be freed.  */
  59 extern int __nss_configure_lookup (__const char *__dbname,
  60                                    __const char *__string) __THROW;
  61
  62 __END_DECLS
  63
  64 #endif /* nss.h */