minix/lib/libc/gen/gr_private.h

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/* $NetBSD: gr_private.h,v 1.2 2008/04/28 20:22:59 martin Exp $ */
/*-
* Copyright (c) 2004-2005 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Luke Mewburn.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Structures and functions used by various group(5) public functions
* and their back-end implementations.
* These are subject to change without notice and should not be used
* outside of libc (even by third-party nss_*.so modules implementing
* group(5) back-ends).
*/
#define _GROUP_COMPAT /* "group" defaults to compat, so always provide it */
#if defined(__minix) && defined(_REENTRANT)
/*
* mutex to serialize the public group(5) functions use of the
* back-end implementations, which may not be reentrant.
*/
extern mutex_t __grmutex;
#endif /* defined(__minix) */
/*
* files methods
*/
struct __grstate_files { /* state shared between files methods */
int stayopen; /* see getgroupent(3) */
FILE *fp; /* groups file handle */
};
extern int __grstart_files(struct __grstate_files *);
extern int __grend_files(struct __grstate_files *);
extern int __grscan_files(int *, struct group *, char *, size_t,
struct __grstate_files *, int, const char *, gid_t);
/*
* dns methods
*/
struct __grstate_dns { /* state shared between dns methods */
int stayopen; /* see getgroupent(3) */
void *context; /* Hesiod context */
int num; /* group index, -1 if no more */
};
extern int __grstart_dns(struct __grstate_dns *);
extern int __grend_dns(struct __grstate_dns *state);
extern int __grscan_dns(int *, struct group *, char *, size_t,
struct __grstate_dns *, int, const char *, gid_t);
/*
* nis methods
*/
struct __grstate_nis { /* state shared between nis methods */
int stayopen; /* see getgroupent(3) */
char *domain; /* NIS domain */
int done; /* non-zero if search exhausted */
char *current; /* current first/next match */
int currentlen; /* length of _nis_current */
};
extern int __grstart_nis(struct __grstate_nis *);
extern int __grend_nis(struct __grstate_nis *);
extern int __grscan_nis(int *, struct group *, char *, size_t,
struct __grstate_nis *, int, const char *, gid_t);
/*
* compat methods
*/
struct __grstate_compat { /* state shared between compat methods */
int stayopen; /* see getgroupent(3) */
FILE *fp; /* file handle */
/*
* XXX: convert name to a separate compatstate enum and grow name as necessary
* instead of using strdup & free for each + line
*/
char *name; /* NULL if reading file, */
/* "" if compat "+", */
/* name if compat "+name" */
};
extern int __grbad_compat(void *nsrv, void *nscb, va_list ap);
extern int __grstart_compat(struct __grstate_compat *);
extern int __grend_compat(struct __grstate_compat *);
extern int __grscan_compat(int *, struct group *, char *, size_t,
struct __grstate_compat *, int, const char *, gid_t,
int (*)(void *, struct group **), void *);