libc_r.h (3937B)
1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ 2 /* This Source Code Form is subject to the terms of the Mozilla Public 3 * License, v. 2.0. If a copy of the MPL was not distributed with this 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ 5 6 /* libc_r.h -- macros, defines, etc. to make using reentrant libc calls */ 7 /* a bit easier. This was initially done for AIX pthreads, */ 8 /* but should be usable for anyone... */ 9 10 /* Most of these use locally defined space instead of static library space. */ 11 /* Because of this, we use the _INIT_R to declare/allocate space (stack), */ 12 /* and the plain routines to actually do it..._WARNING_: avoid allocating */ 13 /* memory wherever possible. Memory allocation is fairly expensive, at */ 14 /* least on AIX...use arrays instead (which allocate from the stack.) */ 15 /* I know the names are a bit strange, but I wanted to be fairly certain */ 16 /* that we didn't have any namespace corruption...in general, the inits are */ 17 /* R_<name>_INIT_R(), and the actual calls are R_<name>_R(). */ 18 19 #ifndef _LIBC_R_H 20 #define _LIBC_R_H 21 22 /************/ 23 /* strtok */ 24 /************/ 25 #define R_STRTOK_INIT_R() \ 26 char *r_strtok_r=NULL 27 28 #define R_STRTOK_R(return,source,delim) \ 29 return=strtok_r(source,delim,&r_strtok_r) 30 31 #define R_STRTOK_NORET_R(source,delim) \ 32 strtok_r(source,delim,&r_strtok_r) 33 34 /**************/ 35 /* strerror */ 36 /**************/ 37 #define R_MAX_STRERROR_LEN_R 8192 /* Straight from limits.h */ 38 39 #define R_STRERROR_INIT_R() \ 40 char r_strerror_r[R_MAX_STRERROR_LEN_R] 41 42 #define R_STRERROR_R(val) \ 43 strerror_r(val,r_strerror_r,R_MAX_STRERROR_LEN_R) 44 45 /*****************/ 46 /* time things */ 47 /*****************/ 48 #define R_ASCTIME_INIT_R() \ 49 char r_asctime_r[26] 50 51 #define R_ASCTIME_R(val) \ 52 asctime_r(val,r_asctime_r) 53 54 #define R_CTIME_INIT_R() \ 55 char r_ctime_r[26] 56 57 #define R_CTIME_R(val) \ 58 ctime_r(val,r_ctime_r) 59 60 #define R_GMTIME_INIT_R() \ 61 struct tm r_gmtime_r 62 63 #define R_GMTIME_R(time) \ 64 gmtime_r(time,&r_gmtime_r) 65 66 #define R_LOCALTIME_INIT_R() \ 67 struct tm r_localtime_r 68 69 #define R_LOCALTIME_R(val) \ 70 localtime_r(val,&r_localtime_r) 71 72 /***********/ 73 /* crypt */ 74 /***********/ 75 #include <crypt.h> 76 #define R_CRYPT_INIT_R() \ 77 CRYPTD r_cryptd_r; \ 78 bzero(&r_cryptd_r,sizeof(CRYPTD)) 79 80 #define R_CRYPT_R(pass,salt) \ 81 crypt_r(pass,salt,&r_cryptd_r) 82 83 /**************/ 84 /* pw stuff */ 85 /**************/ 86 #define R_MAX_PW_LEN_R 1024 87 /* The following must be after the last declaration, but */ 88 /* before the first bit of code... */ 89 #define R_GETPWNAM_INIT_R(pw_ptr) \ 90 struct passwd r_getpwnam_pw_r; \ 91 char r_getpwnam_line_r[R_MAX_PW_LEN_R]; \ 92 pw_ptr = &r_getpwnam_pw_r 93 94 #define R_GETPWNAM_R(name) \ 95 getpwnam_r(name,&r_getpwnam_pw_r,r_getpwnam_line_r,R_MAX_PW_LEN_R) 96 97 /*******************/ 98 /* gethost stuff */ 99 /*******************/ 100 #define R_GETHOSTBYADDR_INIT_R() \ 101 struct hostent r_gethostbyaddr_r; \ 102 struct hostent_data r_gethostbyaddr_data_r 103 104 #define R_GETHOSTBYADDR_R(addr,len,type,xptr_ent) \ 105 bzero(&r_gethostbyaddr_r,sizeof(struct hostent)); \ 106 bzero(&r_gethostbyaddr_data_r,sizeof(struct hostent_data)); \ 107 xptr_ent = &r_gethostbyaddr_r; \ 108 if (gethostbyaddr_r(addr,len,type, \ 109 &r_gethostbyaddr_r,&r_gethostbyaddr_data_r) == -1) { \ 110 xptr_ent = NULL; \ 111 } 112 113 #define R_GETHOSTBYNAME_INIT_R() \ 114 struct hostent r_gethostbyname_r; \ 115 struct hostent_data r_gethostbyname_data_r 116 117 #define R_GETHOSTBYNAME_R(name,xptr_ent) \ 118 bzero(&r_gethostbyname_r,sizeof(struct hostent)); \ 119 bzero(&r_gethostbyname_data_r,sizeof(struct hostent_data)); \ 120 xptr_ent = &r_gethostbyname_r; \ 121 if (gethostbyname_r(name, \ 122 &r_gethostbyname_r,&r_gethostbyname_data_r) == -1) { \ 123 xptr_ent = NULL; \ 124 } 125 126 #endif /* _LIBC_R_H */