1 /* Copyright (C) 1996, 1997, 1999, 2008, 2012 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, see 16 <http://www.gnu.org/licenses/>. */ 17 18 /* Define interface to NSS. This is meant for the interface functions 19 and for implementors of new services. */ 20 21 #ifndef _NSS_H 22 #define _NSS_H 1 23 24 #include <features.h> 25 #include <stdint.h> 26 27 28 __BEGIN_DECLS 29 30 /* Possible results of lookup using a nss_* function. */ 31 enum nss_status 32 { 33 NSS_STATUS_TRYAGAIN = -2, 34 NSS_STATUS_UNAVAIL, 35 NSS_STATUS_NOTFOUND, 36 NSS_STATUS_SUCCESS, 37 NSS_STATUS_RETURN 38 }; 39 40 41 /* Data structure used for the 'gethostbyname4_r' function. */ 42 struct gaih_addrtuple 43 { 44 struct gaih_addrtuple *next; 45 char *name; 46 int family; 47 uint32_t addr[4]; 48 uint32_t scopeid; 49 }; 50 51 52 /* Overwrite service selection for database DBNAME using specification 53 in STRING. 54 This function should only be used by system programs which have to 55 work around non-existing services (e.e., while booting). 56 Attention: Using this function repeatedly will slowly eat up the 57 whole memory since previous selection data cannot be freed. */ 58 extern int __nss_configure_lookup (const char *__dbname, 59 const char *__string) __THROW; 60 61 __END_DECLS 62 63 #endif /* nss.h */ 64