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      1 /*
      2  * Copyright (C) 2014 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef _BIONIC_OPENBSD_COMPAT_H_included
     18 #define _BIONIC_OPENBSD_COMPAT_H_included
     19 
     20 #define _BSD_SOURCE
     21 
     22 #include <sys/cdefs.h>
     23 #include <stddef.h> // For size_t.
     24 
     25 /* Redirect internal C library calls to the public function. */
     26 #define _err err
     27 #define _errx errx
     28 #define _verr verr
     29 #define _verrx verrx
     30 #define _vwarn vwarn
     31 #define _vwarnx vwarnx
     32 #define _warn warn
     33 #define _warnx warnx
     34 
     35 /* Ignore all DEF_STRONG/DEF_WEAK in OpenBSD. */
     36 #define DEF_STRONG(sym)
     37 #define DEF_WEAK(sym)
     38 
     39 /* Ignore all __warn_references in OpenBSD. */
     40 #define __warn_references(sym,msg)
     41 
     42 /* OpenBSD's <ctype.h> uses these names, which conflicted with stlport.
     43  * Additionally, we changed the numeric/digit type from N to D for libcxx.
     44  */
     45 #define _U _CTYPE_U
     46 #define _L _CTYPE_L
     47 #define _N _CTYPE_D
     48 #define _S _CTYPE_S
     49 #define _P _CTYPE_P
     50 #define _C _CTYPE_C
     51 #define _X _CTYPE_X
     52 #define _B _CTYPE_B
     53 
     54 /* OpenBSD has this, but we can't really implement it correctly on Linux. */
     55 #define issetugid() 0
     56 
     57 #define explicit_bzero(p, s) memset(p, 0, s)
     58 
     59 /* OpenBSD has these in <sys/param.h>, but "ALIGN" isn't something we want to reserve. */
     60 #define ALIGNBYTES (sizeof(uintptr_t) - 1)
     61 #define ALIGN(p) (((uintptr_t)(p) + ALIGNBYTES) &~ ALIGNBYTES)
     62 
     63 /* OpenBSD has this in paths.h. But this directory doesn't normally exist.
     64  * Even when it does exist, only the 'shell' user has permissions.
     65  */
     66 #define _PATH_TMP "/data/local/tmp/"
     67 
     68 /* We have OpenBSD's getentropy_linux.c, but we don't mention getentropy in any header. */
     69 __LIBC_HIDDEN__ extern int getentropy(void*, size_t);
     70 
     71 /* OpenBSD has this as API, but we just use it internally. */
     72 __LIBC_HIDDEN__ void* reallocarray(void*, size_t, size_t);
     73 
     74 /* LP32 NDK ctype.h contained references to these. */
     75 __LIBC32_LEGACY_PUBLIC__ extern const short* _tolower_tab_;
     76 __LIBC32_LEGACY_PUBLIC__ extern const short* _toupper_tab_;
     77 
     78 __LIBC_HIDDEN__ extern const char _C_ctype_[];
     79 __LIBC_HIDDEN__ extern const short _C_toupper_[];
     80 __LIBC_HIDDEN__ extern const short _C_tolower_[];
     81 __LIBC_HIDDEN__ extern char* __findenv(const char*, int, int*);
     82 __LIBC_HIDDEN__ extern char* _mktemp(char*);
     83 
     84 /* TODO: hide this when android_support.a is fixed (http://b/16298580).*/
     85 /*__LIBC_HIDDEN__*/ extern int __isthreaded;
     86 
     87 #endif
     88