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/* Copyright (C) 1996-2025 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
<https://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 <stddef.h>
#include <stdint.h>
#include <sys/types.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;
/* NSS-related types. */
struct __netgrent;
struct aliasent;
struct ether_addr;
struct etherent;
struct group;
struct hostent;
struct netent;
struct passwd;
struct protoent;
struct rpcent;
struct servent;
struct sgrp;
struct spwd;
struct traced_file;
/* Types of functions exported from NSS service modules. */
typedef enum nss_status nss_endaliasent (void);
typedef enum nss_status nss_endetherent (void);
typedef enum nss_status nss_endgrent (void);
typedef enum nss_status nss_endhostent (void);
typedef enum nss_status nss_endnetent (void);
typedef enum nss_status nss_endnetgrent (struct __netgrent *);
typedef enum nss_status nss_endprotoent (void);
typedef enum nss_status nss_endpwent (void);
typedef enum nss_status nss_endrpcent (void);
typedef enum nss_status nss_endservent (void);
typedef enum nss_status nss_endsgent (void);
typedef enum nss_status nss_endspent (void);
typedef enum nss_status nss_getaliasbyname_r (const char *, struct aliasent *,
char *, size_t, int *);
typedef enum nss_status nss_getaliasent_r (struct aliasent *,
char *, size_t, int *);
typedef enum nss_status nss_getcanonname_r (const char *, char *, size_t,
char **, int *, int *);
typedef enum nss_status nss_getetherent_r (struct etherent *,
char *, size_t, int *);
typedef enum nss_status nss_getgrent_r (struct group *, char *, size_t, int *);
typedef enum nss_status nss_getgrgid_r (__gid_t, struct group *,
char *, size_t, int *);
typedef enum nss_status nss_getgrnam_r (const char *, struct group *,
char *, size_t, int *);
typedef enum nss_status nss_gethostbyaddr2_r (const void *, __socklen_t, int,
struct hostent *, char *, size_t,
int *, int *, int32_t *);
typedef enum nss_status nss_gethostbyaddr_r (const void *, __socklen_t, int,
struct hostent *, char *, size_t,
int *, int *);
typedef enum nss_status nss_gethostbyname2_r (const char *, int,
struct hostent *, char *, size_t,
int *, int *);
typedef enum nss_status nss_gethostbyname3_r (const char *, int,
struct hostent *, char *, size_t,
int *, int *, int32_t *,
char **);
typedef enum nss_status nss_gethostbyname4_r (const char *,
struct gaih_addrtuple **,
char *, size_t,
int *, int *, int32_t *);
typedef enum nss_status nss_gethostbyname_r (const char *, struct hostent *,
char *, size_t, int *, int *);
typedef enum nss_status nss_gethostent_r (struct hostent *, char *, size_t,
int *, int *);
typedef enum nss_status nss_gethostton_r (const char *, struct etherent *,
char *, size_t, int *);
typedef enum nss_status nss_getnetbyaddr_r (uint32_t, int, struct netent *,
char *, size_t, int *, int *);
typedef enum nss_status nss_getnetbyname_r (const char *, struct netent *,
char *, size_t, int *, int *);
typedef enum nss_status nss_getnetent_r (struct netent *,
char *, size_t, int *, int *);
typedef enum nss_status
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