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+/* Copyright (C) 1996-2017 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+/* Define interface to NSS. This is meant for the interface functions
+ and for implementors of new services. */
+
+#ifndef _NSS_H
+#define _NSS_H 1
+
+#include <features.h>
+#include <stdint.h>
+
+
+__BEGIN_DECLS
+
+/* Possible results of lookup using a nss_* function. */
+enum nss_status
+{
+ NSS_STATUS_TRYAGAIN = -2,
+ NSS_STATUS_UNAVAIL,
+ NSS_STATUS_NOTFOUND,
+ NSS_STATUS_SUCCESS,
+ NSS_STATUS_RETURN
+};
+
+
+/* Data structure used for the 'gethostbyname4_r' function. */
+struct gaih_addrtuple
+ {
+ struct gaih_addrtuple *next;
+ char *name;
+ int family;
+ uint32_t addr[4];
+ uint32_t scopeid;
+ };
+
+
+/* Overwrite service selection for database DBNAME using specification
+ in STRING.
+ This function should only be used by system programs which have to
+ work around non-existing services (e.e., while booting).
+ Attention: Using this function repeatedly will slowly eat up the
+ whole memory since previous selection data cannot be freed. */
+extern int __nss_configure_lookup (const char *__dbname,
+ const char *__string) __THROW;
+
+__END_DECLS
+
+#endif /* nss.h */