diff options
Diffstat (limited to 'nss/nss_db/nss_db.h')
| -rw-r--r-- | nss/nss_db/nss_db.h | 96 |
1 files changed, 36 insertions, 60 deletions
diff --git a/nss/nss_db/nss_db.h b/nss/nss_db/nss_db.h index 0edc9b6bea..a965ae33fe 100644 --- a/nss/nss_db/nss_db.h +++ b/nss/nss_db/nss_db.h @@ -1,5 +1,5 @@ /* Common database open/close routines for nss_db. - Copyright (C) 1999, 2000 Free Software Foundation, Inc. + Copyright (C) 1999, 2000, 2011 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 @@ -22,73 +22,49 @@ #include <nss.h> #include <stdint.h> +#include <bits/libc-lock.h> -/* Variables which keep track of the error values. */ -extern int db_keyexist; -extern int db_notfound; -/* This flag is the same for all versions of the Berkeley DB library. */ -#define DB_CREATE 0x000001 +/* String table index type. */ +typedef uint32_t stridx_t; -/* But constants which vary from version to version are actually - variables here. */ -extern int db_first; -extern int db_next; -extern int db_nooverwrite; -extern int db_truncate; -extern int db_rdonly; - -/* The `DBT' type is the same in all versions we support. */ -typedef struct +/* Database file header. */ +struct nss_db_header { - void *data; - uint32_t size; - uint32_t ulen; - uint32_t dlen; - uint32_t doff; - uint32_t flags; -} DBT; - -/* But the cursor object is very different from version to version. */ -typedef struct + 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 { - void *cursor; - int (*c_get) (void *, DBT *, DBT *, uint32_t); -} NSS_DBC; + struct nss_db_header *header; + size_t len; +}; -/* We need a helper function for it. */ -extern int db_cursor (void *db, void *txn, NSS_DBC **dbcp); - -/* This is the wrapper we put around the `DB' structures to provide a - uniform interface to the higher-level functions. */ -typedef struct -{ - void *db; - int (*close) (void *, uint32_t); - int (*cursor) (void *, void *, NSS_DBC **); - int (*fd) (void *, int *); - int (*get) (void *, void *, DBT *, DBT *, uint32_t); - int (*put) (void *, void *, DBT *, DBT *, uint32_t); -} NSS_DB; /* Open the database stored in FILE. If succesful, store the database - handle in *DBP and return NSS_STATUS_SUCCESS. On failure, return - the appropriate lookup status. */ -extern enum nss_status internal_setent (const char *file, NSS_DB **dbp); - -/* Close the database *DBP. */ -extern void internal_endent (NSS_DB **dbp); - -/* Dynamically load the Berkeley DB library. Return zero if - successful, non-zero if no suitable version of the library could be - loaded. */ -extern enum nss_status load_db (void); - -/* Open the database in FNAME, for access specified by FLAGS. If - opening the database causes the file FNAME to be created, it is - created with MODE. If succesful, store the database handle in *DBP - and return NSS_STATUS_SUCCESS. On failure, return the appropriate + handle in *MAPPINGP or a file descriptor for the file in *FDP and + return NSS_STATUS_SUCCESS. On failure, return the appropriate lookup status. */ -extern int dbopen (const char *fname, int oper, int mode, NSS_DB **dbp); +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 */ |