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/* Common database open/close routines for nss_db.
Copyright (C) 1999-2020 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/>. */
#ifndef _NSS_DB_H
#define _NSS_DB_H 1
#include <nss.h>
#include <stdint.h>
#include <libc-lock.h>
NSS_DECLARE_MODULE_FUNCTIONS (db)
/* String table index type. */
typedef uint32_t stridx_t;
/* Database file header. */
struct nss_db_header
{
uint32_t magic;
#define NSS_DB_MAGIC 0xdd110601
uint32_t ndbs;
uint64_t valstroffset;
uint64_t valstrlen;
uint64_t allocate;
struct
{
char id;
char pad[sizeof (uint32_t) - 1];
uint32_t hashsize;
uint64_t hashoffset;
uint64_t keyidxoffset;
uint64_t keystroffset;
} dbs[0];
};
/* Information about mapped database. */
struct nss_db_map
{
struct nss_db_header *header;
size_t len;
};
/* Open the database stored in FILE. If succesful, store the database
handle in *MAPPINGP or a file descriptor for the file in *FDP and
return NSS_STATUS_SUCCESS. On failure, return the appropriate
lookup status. */
enum nss_status internal_setent (const char *file,
struct nss_db_map *mappingp);
/* Close the database FD. */
extern void internal_endent (struct nss_db_map *mapping);
#endif /* nss_db.h */
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