d915a14ef0
Mainly focus on files that use BSD 2-Clause license, however the tool I was using mis-identified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
200 lines
6.6 KiB
C
200 lines
6.6 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2005 Michael Bushkov <bushman@rsu.ru>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef __NS_CACHE_H__
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#define __NS_CACHE_H__
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#include "nscachedcli.h"
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typedef int (*nss_cache_id_func_t)(char *, size_t *, va_list, void *);
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typedef int (*nss_cache_marshal_func_t)(char *, size_t *, void *, va_list,
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void *);
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typedef int (*nss_cache_unmarshal_func_t)(char *, size_t, void *, va_list,
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void *);
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typedef void (*nss_set_mp_ws_func_t)(cached_mp_write_session);
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typedef cached_mp_write_session (*nss_get_mp_ws_func_t)(void);
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typedef void (*nss_set_mp_rs_func_t)(cached_mp_read_session);
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typedef cached_mp_read_session (*nss_get_mp_rs_func_t)(void);
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typedef struct _nss_cache_info {
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char *entry_name;
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void *mdata;
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/*
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* These 3 functions should be implemented specifically for each
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* nsswitch database.
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*/
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nss_cache_id_func_t id_func; /* marshals the request parameters */
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nss_cache_marshal_func_t marshal_func; /* marshals response */
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nss_cache_unmarshal_func_t unmarshal_func; /* unmarshals response */
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/*
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* These 4 functions should be generated with NSS_MP_CACHE_HANDLING
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* macro.
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*/
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nss_set_mp_ws_func_t set_mp_ws_func; /* sets current write session */
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nss_get_mp_ws_func_t get_mp_ws_func; /* gets current write session */
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nss_set_mp_rs_func_t set_mp_rs_func; /* sets current read session */
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nss_get_mp_rs_func_t get_mp_rs_func; /* gets current read session */
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} nss_cache_info;
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/*
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* NSS_MP_CACHE_HANDLING implements the set_mp_ws, get_mp_ws, set_mp_rs,
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* get_mp_rs functions, that are used in _nss_cache_info. It uses
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* NSS_TLS_HANDLING macro to organize thread local storage.
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*/
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#define NSS_MP_CACHE_HANDLING(name) \
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struct name##_mp_state { \
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cached_mp_write_session mp_write_session; \
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cached_mp_read_session mp_read_session; \
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}; \
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\
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static void \
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name##_mp_endstate(void *s) { \
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struct name##_mp_state *mp_state; \
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\
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mp_state = (struct name##_mp_state *)s; \
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if (mp_state->mp_write_session != INVALID_CACHED_MP_WRITE_SESSION)\
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__abandon_cached_mp_write_session(mp_state->mp_write_session);\
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\
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if (mp_state->mp_read_session != INVALID_CACHED_MP_READ_SESSION)\
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__close_cached_mp_read_session(mp_state->mp_read_session);\
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} \
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NSS_TLS_HANDLING(name##_mp); \
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\
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static void \
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name##_set_mp_ws(cached_mp_write_session ws) \
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{ \
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struct name##_mp_state *mp_state; \
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int res; \
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\
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res = name##_mp_getstate(&mp_state); \
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if (res != 0) \
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return; \
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\
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mp_state->mp_write_session = ws; \
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} \
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\
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static cached_mp_write_session \
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name##_get_mp_ws(void) \
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{ \
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struct name##_mp_state *mp_state; \
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int res; \
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\
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res = name##_mp_getstate(&mp_state); \
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if (res != 0) \
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return (INVALID_CACHED_MP_WRITE_SESSION); \
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\
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return (mp_state->mp_write_session); \
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} \
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\
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static void \
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name##_set_mp_rs(cached_mp_read_session rs) \
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{ \
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struct name##_mp_state *mp_state; \
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int res; \
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\
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res = name##_mp_getstate(&mp_state); \
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if (res != 0) \
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return; \
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\
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mp_state->mp_read_session = rs; \
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} \
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\
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static cached_mp_read_session \
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name##_get_mp_rs(void) \
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{ \
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struct name##_mp_state *mp_state; \
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int res; \
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\
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res = name##_mp_getstate(&mp_state); \
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if (res != 0) \
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return (INVALID_CACHED_MP_READ_SESSION); \
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\
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return (mp_state->mp_read_session); \
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}
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/*
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* These macros should be used to initialize _nss_cache_info structure. For
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* multipart queries in setXXXent and getXXXent functions mf and uf
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* (marshal function and unmarshal function) should be both NULL.
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*/
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#define NS_COMMON_CACHE_INFO_INITIALIZER(name, mdata, if, mf, uf) \
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{#name, mdata, if, mf, uf, NULL, NULL, NULL, NULL}
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#define NS_MP_CACHE_INFO_INITIALIZER(name, mdata, mf, uf) \
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{#name, mdata, NULL, mf, uf, name##_set_mp_ws, name##_get_mp_ws,\
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name##_set_mp_rs, name##_get_mp_rs }
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/*
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* Analog of other XXX_CB macros. Has the pointer to _nss_cache_info
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* structure as the only argument.
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*/
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#define NS_CACHE_CB(cinfo) {NSSRC_CACHE, __nss_cache_handler, (void *)(cinfo) },
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/* args are: current pointer, current buffer, initial buffer, pointer type */
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#define NS_APPLY_OFFSET(cp, cb, ib, p_type) \
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if ((cp) != NULL) \
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(cp) = (p_type)((char *)(cb) + (size_t)(cp) - (size_t)(ib))
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/*
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* Gets new pointer from the marshalled buffer by uisng initial address
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* and initial buffer address
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*/
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#define NS_GET_NEWP(cp, cb, ib) \
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((char *)(cb) + (size_t)(cp) - (size_t)(ib))
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typedef struct _nss_cache_data {
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char *key;
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size_t key_size;
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nss_cache_info const *info;
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} nss_cache_data;
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__BEGIN_DECLS
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/* dummy function, which is needed to make nss_method_lookup happy */
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extern int __nss_cache_handler(void *, void *, va_list);
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#ifdef _NS_PRIVATE
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extern int __nss_common_cache_read(void *, void *, va_list);
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extern int __nss_common_cache_write(void *, void *, va_list);
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extern int __nss_common_cache_write_negative(void *);
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extern int __nss_mp_cache_read(void *, void *, va_list);
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extern int __nss_mp_cache_write(void *, void *, va_list);
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extern int __nss_mp_cache_write_submit(void *, void *, va_list);
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extern int __nss_mp_cache_end(void *, void *, va_list);
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#endif /* _NS_PRIVATE */
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__END_DECLS
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#endif
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