140 строки
4.3 KiB
C
140 строки
4.3 KiB
C
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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/* libc_r.h -- macros, defines, etc. to make using reentrant libc calls */
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/* a bit easier. This was initially done for AIX pthreads, */
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/* but should be usable for anyone... */
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/* Most of these use locally defined space instead of static library space. */
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/* Because of this, we use the _INIT_R to declare/allocate space (stack), */
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/* and the plain routines to actually do it..._WARNING_: avoid allocating */
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/* memory wherever possible. Memory allocation is fairly expensive, at */
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/* least on AIX...use arrays instead (which allocate from the stack.) */
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/* I know the names are a bit strange, but I wanted to be fairly certain */
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/* that we didn't have any namespace corruption...in general, the inits are */
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/* R_<name>_INIT_R(), and the actual calls are R_<name>_R(). */
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#ifndef _LIBC_R_H
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#define _LIBC_R_H
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/************/
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/* strtok */
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/************/
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#define R_STRTOK_INIT_R() \
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char *r_strtok_r=NULL
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#define R_STRTOK_R(return,source,delim) \
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return=strtok_r(source,delim,&r_strtok_r)
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#define R_STRTOK_NORET_R(source,delim) \
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strtok_r(source,delim,&r_strtok_r)
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/**************/
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/* strerror */
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/**************/
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#define R_MAX_STRERROR_LEN_R 8192 /* Straight from limits.h */
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#define R_STRERROR_INIT_R() \
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char r_strerror_r[R_MAX_STRERROR_LEN_R]
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#define R_STRERROR_R(val) \
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strerror_r(val,r_strerror_r,R_MAX_STRERROR_LEN_R)
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/*****************/
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/* time things */
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/*****************/
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#define R_ASCTIME_INIT_R() \
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char r_asctime_r[26]
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#define R_ASCTIME_R(val) \
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asctime_r(val,r_asctime_r)
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#define R_CTIME_INIT_R() \
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char r_ctime_r[26]
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#define R_CTIME_R(val) \
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ctime_r(val,r_ctime_r)
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#define R_GMTIME_INIT_R() \
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struct tm r_gmtime_r
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#define R_GMTIME_R(time) \
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gmtime_r(time,&r_gmtime_r)
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#define R_LOCALTIME_INIT_R() \
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struct tm r_localtime_r
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#define R_LOCALTIME_R(val) \
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localtime_r(val,&r_localtime_r)
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/***********/
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/* crypt */
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/***********/
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#include <crypt.h>
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#define R_CRYPT_INIT_R() \
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CRYPTD r_cryptd_r; \
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bzero(&r_cryptd_r,sizeof(CRYPTD))
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#define R_CRYPT_R(pass,salt) \
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crypt_r(pass,salt,&r_cryptd_r)
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/**************/
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/* pw stuff */
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/**************/
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#define R_MAX_PW_LEN_R 1024
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/* The following must be after the last declaration, but */
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/* before the first bit of code... */
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#define R_GETPWNAM_INIT_R(pw_ptr) \
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struct passwd r_getpwnam_pw_r; \
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char r_getpwnam_line_r[R_MAX_PW_LEN_R]; \
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pw_ptr = &r_getpwnam_pw_r
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#define R_GETPWNAM_R(name) \
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getpwnam_r(name,&r_getpwnam_pw_r,r_getpwnam_line_r,R_MAX_PW_LEN_R)
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/*******************/
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/* gethost stuff */
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/*******************/
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#define R_GETHOSTBYADDR_INIT_R() \
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struct hostent r_gethostbyaddr_r; \
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struct hostent_data r_gethostbyaddr_data_r
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#define R_GETHOSTBYADDR_R(addr,len,type,xptr_ent) \
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bzero(&r_gethostbyaddr_r,sizeof(struct hostent)); \
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bzero(&r_gethostbyaddr_data_r,sizeof(struct hostent_data)); \
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xptr_ent = &r_gethostbyaddr_r; \
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if (gethostbyaddr_r(addr,len,type, \
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&r_gethostbyaddr_r,&r_gethostbyaddr_data_r) == -1) { \
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xptr_ent = NULL; \
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}
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#define R_GETHOSTBYNAME_INIT_R() \
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struct hostent r_gethostbyname_r; \
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struct hostent_data r_gethostbyname_data_r
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#define R_GETHOSTBYNAME_R(name,xptr_ent) \
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bzero(&r_gethostbyname_r,sizeof(struct hostent)); \
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bzero(&r_gethostbyname_data_r,sizeof(struct hostent_data)); \
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xptr_ent = &r_gethostbyname_r; \
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if (gethostbyname_r(name, \
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&r_gethostbyname_r,&r_gethostbyname_data_r) == -1) { \
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xptr_ent = NULL; \
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}
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#endif /* _LIBC_R_H */
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