nsprpub/config/libc_r.h

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* ***** BEGIN LICENSE BLOCK *****
   3  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   4  *
   5  * The contents of this file are subject to the Mozilla Public License Version
   6  * 1.1 (the "License"); you may not use this file except in compliance with
   7  * the License. You may obtain a copy of the License at
   8  * http://www.mozilla.org/MPL/
   9  *
  10  * Software distributed under the License is distributed on an "AS IS" basis,
  11  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  12  * for the specific language governing rights and limitations under the
  13  * License.
  14  *
  15  * The Original Code is the Netscape Portable Runtime (NSPR).
  16  *
  17  * The Initial Developer of the Original Code is
  18  * Netscape Communications Corporation.
  19  * Portions created by the Initial Developer are Copyright (C) 1998-2000
  20  * the Initial Developer. All Rights Reserved.
  21  *
  22  * Contributor(s):
  23  *
  24  * Alternatively, the contents of this file may be used under the terms of
  25  * either the GNU General Public License Version 2 or later (the "GPL"), or
  26  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  27  * in which case the provisions of the GPL or the LGPL are applicable instead
  28  * of those above. If you wish to allow use of your version of this file only
  29  * under the terms of either the GPL or the LGPL, and not to allow others to
  30  * use your version of this file under the terms of the MPL, indicate your
  31  * decision by deleting the provisions above and replace them with the notice
  32  * and other provisions required by the GPL or the LGPL. If you do not delete
  33  * the provisions above, a recipient may use your version of this file under
  34  * the terms of any one of the MPL, the GPL or the LGPL.
  35  *
  36  * ***** END LICENSE BLOCK ***** */
  37
  38 /* libc_r.h  --  macros, defines, etc. to make using reentrant libc calls */
  39 /*               a bit easier.  This was initially done for AIX pthreads, */
  40 /*               but should be usable for anyone...                       */
  41
  42 /* Most of these use locally defined space instead of static library space. */
  43 /* Because of this, we use the _INIT_R to declare/allocate space (stack),   */
  44 /* and the plain routines to actually do it..._WARNING_: avoid allocating   */
  45 /* memory wherever possible.  Memory allocation is fairly expensive, at     */
  46 /* least on AIX...use arrays instead (which allocate from the stack.)       */
  47 /* I know the names are a bit strange, but I wanted to be fairly certain    */
  48 /* that we didn't have any namespace corruption...in general, the inits are */
  49 /* R_<name>_INIT_R(), and the actual calls are R_<name>_R().                */
  50
  51 #ifndef _LIBC_R_H
  52 #define _LIBC_R_H
  53
  54 /************/
  55 /*  strtok  */
  56 /************/
  57 #define R_STRTOK_INIT_R() \
  58     char *r_strtok_r=NULL
  59
  60 #define R_STRTOK_R(return,source,delim) \
  61     return=strtok_r(source,delim,&r_strtok_r)
  62
  63 #define R_STRTOK_NORET_R(source,delim) \
  64     strtok_r(source,delim,&r_strtok_r)
  65
  66 /**************/
  67 /*  strerror  */
  68 /**************/
  69 #define R_MAX_STRERROR_LEN_R 8192     /* Straight from limits.h */
  70
  71 #define R_STRERROR_INIT_R() \
  72     char r_strerror_r[R_MAX_STRERROR_LEN_R]
  73
  74 #define R_STRERROR_R(val) \
  75     strerror_r(val,r_strerror_r,R_MAX_STRERROR_LEN_R)
  76
  77 /*****************/
  78 /*  time things  */
  79 /*****************/
  80 #define R_ASCTIME_INIT_R() \
  81     char r_asctime_r[26]
  82
  83 #define R_ASCTIME_R(val) \
  84     asctime_r(val,r_asctime_r)
  85
  86 #define R_CTIME_INIT_R() \
  87     char r_ctime_r[26]
  88
  89 #define R_CTIME_R(val) \
  90     ctime_r(val,r_ctime_r)
  91
  92 #define R_GMTIME_INIT_R() \
  93     struct tm r_gmtime_r
  94
  95 #define R_GMTIME_R(time) \
  96     gmtime_r(time,&r_gmtime_r)
  97
  98 #define R_LOCALTIME_INIT_R() \
  99    struct tm r_localtime_r
 100
 101 #define R_LOCALTIME_R(val) \
 102    localtime_r(val,&r_localtime_r)
 103
 104 /***********/
 105 /*  crypt  */
 106 /***********/
 107 #include <crypt.h>
 108 #define R_CRYPT_INIT_R() \
 109     CRYPTD r_cryptd_r; \
 110     bzero(&r_cryptd_r,sizeof(CRYPTD))
 111
 112 #define R_CRYPT_R(pass,salt) \
 113     crypt_r(pass,salt,&r_cryptd_r)
 114
 115 /**************/
 116 /*  pw stuff  */
 117 /**************/
 118 #define R_MAX_PW_LEN_R 1024
 119 /* The following must be after the last declaration, but */
 120 /* before the first bit of code...                       */
 121 #define R_GETPWNAM_INIT_R(pw_ptr) \
 122     struct passwd r_getpwnam_pw_r; \
 123     char r_getpwnam_line_r[R_MAX_PW_LEN_R]; \
 124     pw_ptr = &r_getpwnam_pw_r
 125
 126 #define R_GETPWNAM_R(name) \
 127     getpwnam_r(name,&r_getpwnam_pw_r,r_getpwnam_line_r,R_MAX_PW_LEN_R)
 128
 129 /*******************/
 130 /*  gethost stuff  */
 131 /*******************/
 132 #define R_GETHOSTBYADDR_INIT_R() \
 133     struct hostent r_gethostbyaddr_r; \
 134     struct hostent_data r_gethostbyaddr_data_r
 135
 136 #define R_GETHOSTBYADDR_R(addr,len,type,xptr_ent) \
 137     bzero(&r_gethostbyaddr_r,sizeof(struct hostent)); \
 138     bzero(&r_gethostbyaddr_data_r,sizeof(struct hostent_data)); \
 139     xptr_ent = &r_gethostbyaddr_r; \
 140     if (gethostbyaddr_r(addr,len,type, \
 141        &r_gethostbyaddr_r,&r_gethostbyaddr_data_r) == -1) { \
 142            xptr_ent = NULL; \
 143     }
 144
 145 #define R_GETHOSTBYNAME_INIT_R() \
 146     struct hostent r_gethostbyname_r; \
 147     struct hostent_data r_gethostbyname_data_r
 148
 149 #define R_GETHOSTBYNAME_R(name,xptr_ent) \
 150     bzero(&r_gethostbyname_r,sizeof(struct hostent)); \
 151     bzero(&r_gethostbyname_data_r,sizeof(struct hostent_data)); \
 152     xptr_ent = &r_gethostbyname_r; \
 153     if (gethostbyname_r(name, \
 154        &r_gethostbyname_r,&r_gethostbyname_data_r) == -1) { \
 155           xptr_ent = NULL; \
 156     }
 157
 158 #endif /* _LIBC_R_H */