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Bernhard Reutner-Fischerb1629b12006-05-19 19:29:19 +00001/* vi: set sw=4 ts=4: */
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +00002/*
Denys Vlasenko0ef64bd2010-08-16 20:14:46 +02003 * Copyright 2006, Bernhard Reutner-Fischer
Denys Vlasenko867ffb92010-08-16 03:24:40 +02004 *
Denys Vlasenko0ef64bd2010-08-16 20:14:46 +02005 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
Denys Vlasenko867ffb92010-08-16 03:24:40 +02006 */
Denis Vlasenkof81e8db2009-04-09 12:35:13 +00007#ifndef BB_PLATFORM_H
8#define BB_PLATFORM_H 1
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +00009
Dan Fandrich21a542d2009-10-27 11:05:00 +010010/* Assume all these functions exist by default. Platforms where it is not
11 * true will #undef them below.
12 */
13#define HAVE_FDPRINTF 1
Dan Fandrichfe4e23f2009-11-01 04:01:30 +010014#define HAVE_MEMRCHR 1
15#define HAVE_MKDTEMP 1
16#define HAVE_SETBIT 1
17#define HAVE_STRCASESTR 1
Dan Fandrich21a542d2009-10-27 11:05:00 +010018#define HAVE_STRCHRNUL 1
Dan Fandrich0635ddd2010-06-18 22:36:45 -070019#define HAVE_STRSEP 1
Dan Fandrichfe4e23f2009-11-01 04:01:30 +010020#define HAVE_STRSIGNAL 1
Dan Fandrich21a542d2009-10-27 11:05:00 +010021#define HAVE_VASPRINTF 1
22
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +000023/* Convenience macros to test the version of gcc. */
24#undef __GNUC_PREREQ
25#if defined __GNUC__ && defined __GNUC_MINOR__
26# define __GNUC_PREREQ(maj, min) \
Denis Vlasenko9213a9e2006-09-17 16:28:10 +000027 ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +000028#else
29# define __GNUC_PREREQ(maj, min) 0
30#endif
31
32/* __restrict is known in EGCS 1.2 and above. */
Denis Vlasenko98636eb2008-05-09 17:59:34 +000033#if !__GNUC_PREREQ(2,92)
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +000034# ifndef __restrict
Denys Vlasenko5a49d282009-05-19 13:18:45 +020035# define __restrict
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +000036# endif
37#endif
38
39/* Define macros for some gcc attributes. This permits us to use the
40 macros freely, and know that they will come into play for the
41 version of gcc in which they are supported. */
42
Denis Vlasenko98636eb2008-05-09 17:59:34 +000043#if !__GNUC_PREREQ(2,7)
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +000044# ifndef __attribute__
45# define __attribute__(x)
46# endif
47#endif
48
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +000049#undef inline
Denis Vlasenkoa7189f02006-11-17 20:29:00 +000050#if defined(__STDC_VERSION__) && __STDC_VERSION__ > 199901L
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +000051/* it's a keyword */
Denys Vlasenko9b1b62a2009-07-05 03:34:12 +020052#elif __GNUC_PREREQ(2,7)
53# define inline __inline__
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +000054#else
Denys Vlasenko9b1b62a2009-07-05 03:34:12 +020055# define inline
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +000056#endif
57
58#ifndef __const
59# define __const const
60#endif
61
Denis Vlasenkoa60f84e2008-07-05 09:18:54 +000062#define UNUSED_PARAM __attribute__ ((__unused__))
63#define NORETURN __attribute__ ((__noreturn__))
Denys Vlasenko53283ad2009-11-02 14:20:34 +010064/* "The malloc attribute is used to tell the compiler that a function
65 * may be treated as if any non-NULL pointer it returns cannot alias
66 * any other pointer valid when the function returns. This will often
67 * improve optimization. Standard functions with this property include
68 * malloc and calloc. realloc-like functions have this property as long
69 * as the old pointer is never referred to (including comparing it
70 * to the new pointer) after the function returns a non-NULL value."
71 */
72#define RETURNS_MALLOC __attribute__ ((malloc))
Denis Vlasenkoa60f84e2008-07-05 09:18:54 +000073#define PACKED __attribute__ ((__packed__))
74#define ALIGNED(m) __attribute__ ((__aligned__(m)))
Denys Vlasenko9b1b62a2009-07-05 03:34:12 +020075
Denis Vlasenko0f3a5802008-03-20 13:13:09 +000076/* __NO_INLINE__: some gcc's do not honor inlining! :( */
Denis Vlasenko98636eb2008-05-09 17:59:34 +000077#if __GNUC_PREREQ(3,0) && !defined(__NO_INLINE__)
78# define ALWAYS_INLINE __attribute__ ((always_inline)) inline
Denis Vlasenko77f1ec12007-10-13 03:36:03 +000079/* I've seen a toolchain where I needed __noinline__ instead of noinline */
Denis Vlasenko98636eb2008-05-09 17:59:34 +000080# define NOINLINE __attribute__((__noinline__))
81# if !ENABLE_WERROR
Denis Vlasenkoa60f84e2008-07-05 09:18:54 +000082# define DEPRECATED __attribute__ ((__deprecated__))
83# define UNUSED_PARAM_RESULT __attribute__ ((warn_unused_result))
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +000084# else
Denys Vlasenko5a49d282009-05-19 13:18:45 +020085# define DEPRECATED
86# define UNUSED_PARAM_RESULT
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +000087# endif
Denis Vlasenko98636eb2008-05-09 17:59:34 +000088#else
Denys Vlasenko5a49d282009-05-19 13:18:45 +020089# define ALWAYS_INLINE inline
90# define NOINLINE
91# define DEPRECATED
92# define UNUSED_PARAM_RESULT
Denis Vlasenko98636eb2008-05-09 17:59:34 +000093#endif
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +000094
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +000095/* -fwhole-program makes all symbols local. The attribute externally_visible
96 forces a symbol global. */
Denis Vlasenko98636eb2008-05-09 17:59:34 +000097#if __GNUC_PREREQ(4,1)
98# define EXTERNALLY_VISIBLE __attribute__(( visibility("default") ))
Denis Vlasenko9b49a5e2007-10-11 10:05:36 +000099//__attribute__ ((__externally_visible__))
Denis Vlasenko98636eb2008-05-09 17:59:34 +0000100#else
101# define EXTERNALLY_VISIBLE
Denis Vlasenko6ebb2f52008-12-03 10:46:12 +0000102#endif
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +0000103
Denys Vlasenko98a4c7c2010-02-04 15:00:15 +0100104/* At 4.4 gcc become much more anal about this, need to use "aliased" types */
105#if __GNUC_PREREQ(4,4)
106# define FIX_ALIASING __attribute__((__may_alias__))
107#else
108# define FIX_ALIASING
109#endif
110
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +0000111/* We use __extension__ in some places to suppress -pedantic warnings
112 about GCC extensions. This feature didn't work properly before
113 gcc 2.8. */
Denis Vlasenko98636eb2008-05-09 17:59:34 +0000114#if !__GNUC_PREREQ(2,8)
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +0000115# ifndef __extension__
116# define __extension__
117# endif
118#endif
119
Bernhard Reutner-Fischerb5f50ea2006-09-12 13:27:55 +0000120/* gcc-2.95 had no va_copy but only __va_copy. */
Denis Vlasenko98636eb2008-05-09 17:59:34 +0000121#if !__GNUC_PREREQ(3,0)
Bernhard Reutner-Fischerb5f50ea2006-09-12 13:27:55 +0000122# include <stdarg.h>
123# if !defined va_copy && defined __va_copy
124# define va_copy(d,s) __va_copy((d),(s))
125# endif
126#endif
127
Denis Vlasenko42b8daf2008-06-27 03:55:18 +0000128/* FAST_FUNC is a qualifier which (possibly) makes function call faster
129 * and/or smaller by using modified ABI. It is usually only needed
130 * on non-static, busybox internal functions. Recent versions of gcc
131 * optimize statics automatically. FAST_FUNC on static is required
132 * only if you need to match a function pointer's type */
Denis Vlasenkoac2b50e2008-06-27 04:30:48 +0000133#if __GNUC_PREREQ(3,0) && defined(i386) /* || defined(__x86_64__)? */
134/* stdcall makes callee to pop arguments from stack, not caller */
135# define FAST_FUNC __attribute__((regparm(3),stdcall))
Denis Vlasenko42b8daf2008-06-27 03:55:18 +0000136/* #elif ... - add your favorite arch today! */
Denis Vlasenkodefc1ea2008-06-27 02:52:20 +0000137#else
138# define FAST_FUNC
139#endif
140
Denis Vlasenkof81e8db2009-04-09 12:35:13 +0000141/* Make all declarations hidden (-fvisibility flag only affects definitions) */
142/* (don't include system headers after this until corresponding pop!) */
143#if __GNUC_PREREQ(4,1)
144# define PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN _Pragma("GCC visibility push(hidden)")
145# define POP_SAVED_FUNCTION_VISIBILITY _Pragma("GCC visibility pop")
146#else
147# define PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
148# define POP_SAVED_FUNCTION_VISIBILITY
149#endif
150
Rob Landley5cf7c2d2006-02-21 06:44:43 +0000151/* ---- Endian Detection ------------------------------------ */
Rob Landley5cf7c2d2006-02-21 06:44:43 +0000152
Denys Vlasenko9ff50b82010-10-18 11:40:26 +0200153#include <limits.h>
Denys Vlasenko9b1b62a2009-07-05 03:34:12 +0200154#if defined(__digital__) && defined(__unix__)
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +0000155# include <sex.h>
Denys Vlasenko867ffb92010-08-16 03:24:40 +0200156#elif defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) \
157 || defined(__APPLE__)
Denys Vlasenko9b1b62a2009-07-05 03:34:12 +0200158# include <sys/resource.h> /* rlimit */
159# include <machine/endian.h>
160# define bswap_64 __bswap64
161# define bswap_32 __bswap32
162# define bswap_16 __bswap16
Denys Vlasenko867ffb92010-08-16 03:24:40 +0200163#else
Rob Landley15d20a02006-05-29 05:00:44 +0000164# include <byteswap.h>
165# include <endian.h>
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +0000166#endif
167
Denys Vlasenko867ffb92010-08-16 03:24:40 +0200168#if defined(__BYTE_ORDER) && __BYTE_ORDER == __BIG_ENDIAN
Mike Frysingerf8855132006-03-28 02:35:56 +0000169# define BB_BIG_ENDIAN 1
170# define BB_LITTLE_ENDIAN 0
Denys Vlasenko867ffb92010-08-16 03:24:40 +0200171#elif defined(__BYTE_ORDER) && __BYTE_ORDER == __LITTLE_ENDIAN
172# define BB_BIG_ENDIAN 0
173# define BB_LITTLE_ENDIAN 1
Waldemar Brodkorb95b83ba2010-08-06 09:17:26 +0200174#elif defined(_BYTE_ORDER) && _BYTE_ORDER == _BIG_ENDIAN
175# define BB_BIG_ENDIAN 1
176# define BB_LITTLE_ENDIAN 0
Denys Vlasenko867ffb92010-08-16 03:24:40 +0200177#elif defined(_BYTE_ORDER) && _BYTE_ORDER == _LITTLE_ENDIAN
Mike Frysingerf8855132006-03-28 02:35:56 +0000178# define BB_BIG_ENDIAN 0
179# define BB_LITTLE_ENDIAN 1
Denys Vlasenko867ffb92010-08-16 03:24:40 +0200180#elif defined(BYTE_ORDER) && BYTE_ORDER == BIG_ENDIAN
181# define BB_BIG_ENDIAN 1
182# define BB_LITTLE_ENDIAN 0
183#elif defined(BYTE_ORDER) && BYTE_ORDER == LITTLE_ENDIAN
184# define BB_BIG_ENDIAN 0
185# define BB_LITTLE_ENDIAN 1
186#elif defined(__386__)
Waldemar Brodkorb95b83ba2010-08-06 09:17:26 +0200187# define BB_BIG_ENDIAN 0
188# define BB_LITTLE_ENDIAN 1
Denys Vlasenko9b1b62a2009-07-05 03:34:12 +0200189#else
Dan Fandrich21a542d2009-10-27 11:05:00 +0100190# error "Can't determine endianness"
Rob Landley5cf7c2d2006-02-21 06:44:43 +0000191#endif
192
Denys Vlasenko9ff50b82010-10-18 11:40:26 +0200193#if ULONG_MAX > 0xffffffff
194# define bb_bswap_64(x) bswap_64(x)
195#endif
196
Denis Vlasenko9b0f6e12008-11-01 13:40:32 +0000197/* SWAP_LEnn means "convert CPU<->little_endian by swapping bytes" */
Rob Landleybba7f082006-05-29 05:51:12 +0000198#if BB_BIG_ENDIAN
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200199# define SWAP_BE16(x) (x)
200# define SWAP_BE32(x) (x)
201# define SWAP_BE64(x) (x)
202# define SWAP_LE16(x) bswap_16(x)
203# define SWAP_LE32(x) bswap_32(x)
Denys Vlasenko9ff50b82010-10-18 11:40:26 +0200204# define SWAP_LE64(x) bb_bswap_64(x)
Denys Vlasenkobcccad32010-10-16 20:46:35 +0200205# define IF_BIG_ENDIAN(...) __VA_ARGS__
206# define IF_LITTLE_ENDIAN(...)
Rob Landleybba7f082006-05-29 05:51:12 +0000207#else
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200208# define SWAP_BE16(x) bswap_16(x)
209# define SWAP_BE32(x) bswap_32(x)
Denys Vlasenko9ff50b82010-10-18 11:40:26 +0200210# define SWAP_BE64(x) bb_bswap_64(x)
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200211# define SWAP_LE16(x) (x)
212# define SWAP_LE32(x) (x)
213# define SWAP_LE64(x) (x)
Denys Vlasenkobcccad32010-10-16 20:46:35 +0200214# define IF_BIG_ENDIAN(...)
215# define IF_LITTLE_ENDIAN(...) __VA_ARGS__
Rob Landleybba7f082006-05-29 05:51:12 +0000216#endif
217
Denis Vlasenkofc9e1082008-05-26 17:32:35 +0000218/* ---- Unaligned access ------------------------------------ */
219
Denis Vlasenkoefb545b2008-12-08 22:56:18 +0000220/* NB: unaligned parameter should be a pointer, aligned one -
221 * a lvalue. This makes it more likely to not swap them by mistake
222 */
Joakim Tjernlund80f42752010-02-11 08:48:15 +0100223#if defined(i386) || defined(__x86_64__) || defined(__powerpc__)
Denys Vlasenko12ca0802010-02-04 18:41:18 +0100224# include <stdint.h>
225typedef int bb__aliased_int FIX_ALIASING;
226typedef uint16_t bb__aliased_uint16_t FIX_ALIASING;
227typedef uint32_t bb__aliased_uint32_t FIX_ALIASING;
228# define move_from_unaligned_int(v, intp) ((v) = *(bb__aliased_int*)(intp))
229# define move_from_unaligned16(v, u16p) ((v) = *(bb__aliased_uint16_t*)(u16p))
230# define move_from_unaligned32(v, u32p) ((v) = *(bb__aliased_uint32_t*)(u32p))
Denys Vlasenko5fb38492010-02-06 22:48:10 +0100231# define move_to_unaligned16(u16p, v) (*(bb__aliased_uint16_t*)(u16p) = (v))
Denys Vlasenko12ca0802010-02-04 18:41:18 +0100232# define move_to_unaligned32(u32p, v) (*(bb__aliased_uint32_t*)(u32p) = (v))
Denis Vlasenko42b8daf2008-06-27 03:55:18 +0000233/* #elif ... - add your favorite arch today! */
Denis Vlasenkofc9e1082008-05-26 17:32:35 +0000234#else
235/* performs reasonably well (gcc usually inlines memcpy here) */
Denys Vlasenko57be1ee2009-11-26 15:26:31 +0100236# define move_from_unaligned_int(v, intp) (memcpy(&(v), (intp), sizeof(int)))
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200237# define move_from_unaligned16(v, u16p) (memcpy(&(v), (u16p), 2))
238# define move_from_unaligned32(v, u32p) (memcpy(&(v), (u32p), 4))
Denys Vlasenko5fb38492010-02-06 22:48:10 +0100239# define move_to_unaligned16(u16p, v) do { \
240 uint16_t __t = (v); \
241 memcpy((u16p), &__t, 4); \
242} while (0)
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200243# define move_to_unaligned32(u32p, v) do { \
Denis Vlasenko3be23082009-04-17 22:20:44 +0000244 uint32_t __t = (v); \
245 memcpy((u32p), &__t, 4); \
246} while (0)
Denis Vlasenkofc9e1082008-05-26 17:32:35 +0000247#endif
248
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +0000249/* ---- Compiler dependent settings ------------------------- */
Denis Vlasenkofc9e1082008-05-26 17:32:35 +0000250
Denys Vlasenko9b1b62a2009-07-05 03:34:12 +0200251#if (defined __digital__ && defined __unix__) \
Denys Vlasenko867ffb92010-08-16 03:24:40 +0200252 || defined __APPLE__ \
253 || defined __FreeBSD__ || defined __OpenBSD__ || defined __NetBSD__
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +0000254# undef HAVE_MNTENT_H
Mike Frysinger9412ec72008-02-07 22:41:33 +0000255# undef HAVE_SYS_STATFS_H
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +0000256#else
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +0000257# define HAVE_MNTENT_H 1
Mike Frysinger9412ec72008-02-07 22:41:33 +0000258# define HAVE_SYS_STATFS_H 1
Bernhard Reutner-Fischer8c69afd2008-01-29 10:33:34 +0000259#endif
Bernhard Reutner-Fischerbe862092007-03-19 15:15:06 +0000260
Bernhard Reutner-Fischere2e56c72006-05-19 11:54:02 +0000261/*----- Kernel versioning ------------------------------------*/
Denis Vlasenkofc9e1082008-05-26 17:32:35 +0000262
Bernhard Reutner-Fischere2e56c72006-05-19 11:54:02 +0000263#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
Bernhard Reutner-Fischere2e56c72006-05-19 11:54:02 +0000264
Denis Vlasenkofc9e1082008-05-26 17:32:35 +0000265/* ---- Miscellaneous --------------------------------------- */
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +0000266
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +0000267#if defined __GLIBC__ || defined __UCLIBC__ \
Denys Vlasenko9b1b62a2009-07-05 03:34:12 +0200268 || defined __dietlibc__ || defined _NEWLIB_VERSION
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200269# include <features.h>
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +0000270#endif
271
Bernhard Reutner-Fischerc966ba42007-01-18 10:32:09 +0000272/* Size-saving "small" ints (arch-dependent) */
273#if defined(i386) || defined(__x86_64__) || defined(__mips__) || defined(__cris__)
274/* add other arches which benefit from this... */
275typedef signed char smallint;
276typedef unsigned char smalluint;
277#else
278/* for arches where byte accesses generate larger code: */
279typedef int smallint;
280typedef unsigned smalluint;
281#endif
282
Bernhard Reutner-Fischera8e2e182007-01-20 21:27:18 +0000283/* ISO C Standard: 7.16 Boolean type and values <stdbool.h> */
284#if (defined __digital__ && defined __unix__)
285/* old system without (proper) C99 support */
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200286# define bool smalluint
Bernhard Reutner-Fischera8e2e182007-01-20 21:27:18 +0000287#else
288/* modern system, so use it */
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200289# include <stdbool.h>
Bernhard Reutner-Fischera8e2e182007-01-20 21:27:18 +0000290#endif
291
Denis Vlasenko6ca409e2007-08-12 20:58:27 +0000292/* Try to defeat gcc's alignment of "char message[]"-like data */
293#if 1 /* if needed: !defined(arch1) && !defined(arch2) */
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200294# define ALIGN1 __attribute__((aligned(1)))
295# define ALIGN2 __attribute__((aligned(2)))
Denys Vlasenko0ecc1162010-04-14 10:14:25 -0700296# define ALIGN4 __attribute__((aligned(4)))
Denis Vlasenko6ca409e2007-08-12 20:58:27 +0000297#else
298/* Arches which MUST have 2 or 4 byte alignment for everything are here */
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200299# define ALIGN1
300# define ALIGN2
Denys Vlasenko0ecc1162010-04-14 10:14:25 -0700301# define ALIGN4
Denis Vlasenko6ca409e2007-08-12 20:58:27 +0000302#endif
303
Bernhard Reutner-Fischera8e2e182007-01-20 21:27:18 +0000304
Mike Frysinger88407592006-07-20 19:31:07 +0000305/* uclibc does not implement daemon() for no-mmu systems.
Bernhard Reutner-Fischer507cd752006-05-31 10:04:03 +0000306 * For 0.9.29 and svn, __ARCH_USE_MMU__ indicates no-mmu reliably.
307 * For earlier versions there is no reliable way to check if we are building
Denis Vlasenko9e589212008-01-24 01:33:42 +0000308 * for a mmu-less system.
Bernhard Reutner-Fischer507cd752006-05-31 10:04:03 +0000309 */
Denis Vlasenkod2c450c2008-01-08 20:32:12 +0000310#if ENABLE_NOMMU || \
311 (defined __UCLIBC__ && __UCLIBC_MAJOR__ >= 0 && __UCLIBC_MINOR__ >= 9 && \
312 __UCLIBC_SUBLEVEL__ > 28 && !defined __ARCH_USE_MMU__)
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200313# define BB_MMU 0
314# define USE_FOR_NOMMU(...) __VA_ARGS__
315# define USE_FOR_MMU(...)
Denis Vlasenko473dae02007-04-11 07:04:23 +0000316#else
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200317# define BB_MMU 1
318# define USE_FOR_NOMMU(...)
319# define USE_FOR_MMU(...) __VA_ARGS__
Bernhard Reutner-Fischer507cd752006-05-31 10:04:03 +0000320#endif
321
Denys Vlasenko9b1b62a2009-07-05 03:34:12 +0200322/* Don't use lchown with glibc older than 2.1.x */
323#if defined(__GLIBC__) && __GLIBC__ <= 2 && __GLIBC_MINOR__ < 1
Mike Frysinger88407592006-07-20 19:31:07 +0000324# define lchown chown
325#endif
326
Denys Vlasenko9b1b62a2009-07-05 03:34:12 +0200327#if defined(__digital__) && defined(__unix__)
Rob Landley8fba99f2006-05-27 22:08:01 +0000328
Denis Vlasenko6ebb2f52008-12-03 10:46:12 +0000329# include <standards.h>
Denis Vlasenko6ebb2f52008-12-03 10:46:12 +0000330# include <inttypes.h>
Denis Vlasenko6ebb2f52008-12-03 10:46:12 +0000331# define PRIu32 "u"
Denis Vlasenko0de3c552007-04-12 12:31:02 +0000332/* use legacy setpgrp(pid_t,pid_t) for now. move to platform.c */
Denys Vlasenko245a4f82009-11-07 01:31:14 +0100333# define bb_setpgrp() do { pid_t __me = getpid(); setpgrp(__me, __me); } while (0)
Denis Vlasenko6ebb2f52008-12-03 10:46:12 +0000334# if !defined ADJ_OFFSET_SINGLESHOT && defined MOD_CLKA && defined MOD_OFFSET
335# define ADJ_OFFSET_SINGLESHOT (MOD_CLKA | MOD_OFFSET)
336# endif
337# if !defined ADJ_FREQUENCY && defined MOD_FREQUENCY
338# define ADJ_FREQUENCY MOD_FREQUENCY
339# endif
340# if !defined ADJ_TIMECONST && defined MOD_TIMECONST
341# define ADJ_TIMECONST MOD_TIMECONST
342# endif
343# if !defined ADJ_TICK && defined MOD_CLKB
344# define ADJ_TICK MOD_CLKB
345# endif
Rob Landley8fba99f2006-05-27 22:08:01 +0000346
Denys Vlasenko9b1b62a2009-07-05 03:34:12 +0200347#else
Denis Vlasenko6ebb2f52008-12-03 10:46:12 +0000348
349# define bb_setpgrp() setpgrp()
350
Rob Landley18958e92006-06-13 18:28:33 +0000351#endif
352
Dan Fandrich21a542d2009-10-27 11:05:00 +0100353#if defined(__GLIBC__)
354# define fdprintf dprintf
355#endif
356
357#if defined(__dietlibc__)
Dan Fandrichfe4e23f2009-11-01 04:01:30 +0100358# undef HAVE_STRCHRNUL
Dan Fandrich21a542d2009-10-27 11:05:00 +0100359#endif
360
361#if defined(__WATCOMC__)
Dan Fandrichfe4e23f2009-11-01 04:01:30 +0100362# undef HAVE_FDPRINTF
363# undef HAVE_MEMRCHR
364# undef HAVE_MKDTEMP
365# undef HAVE_SETBIT
366# undef HAVE_STRCASESTR
367# undef HAVE_STRCHRNUL
Dan Fandrich0635ddd2010-06-18 22:36:45 -0700368# undef HAVE_STRSEP
Dan Fandrichfe4e23f2009-11-01 04:01:30 +0100369# undef HAVE_STRSIGNAL
370# undef HAVE_VASPRINTF
Dan Fandrich21a542d2009-10-27 11:05:00 +0100371#endif
372
373#if defined(__FreeBSD__)
Dan Fandrichfe4e23f2009-11-01 04:01:30 +0100374# undef HAVE_STRCHRNUL
Dan Fandrich21a542d2009-10-27 11:05:00 +0100375#endif
376
377/*
378 * Now, define prototypes for all the functions defined in platform.c
379 * These must come after all the HAVE_* macros are defined (or not)
380 */
381
Dan Fandrichfe4e23f2009-11-01 04:01:30 +0100382#ifndef HAVE_FDPRINTF
383extern int fdprintf(int fd, const char *format, ...);
384#endif
385
386#ifndef HAVE_MEMRCHR
387extern void *memrchr(const void *s, int c, size_t n) FAST_FUNC;
388#endif
389
390#ifndef HAVE_MKDTEMP
391extern char *mkdtemp(char *template) FAST_FUNC;
392#endif
393
394#ifndef HAVE_SETBIT
395# define setbit(a, b) ((a)[(b) >> 3] |= 1 << ((b) & 7))
396# define clrbit(a, b) ((a)[(b) >> 3] &= ~(1 << ((b) & 7)))
397#endif
398
399#ifndef HAVE_STRCASESTR
400extern char *strcasestr(const char *s, const char *pattern) FAST_FUNC;
401#endif
402
Dan Fandrich21a542d2009-10-27 11:05:00 +0100403#ifndef HAVE_STRCHRNUL
404extern char *strchrnul(const char *s, int c) FAST_FUNC;
405#endif
406
Dan Fandrich0635ddd2010-06-18 22:36:45 -0700407#ifndef HAVE_STRSEP
408extern char *strsep(char **stringp, const char *delim) FAST_FUNC;
409#endif
410
Dan Fandrichfe4e23f2009-11-01 04:01:30 +0100411#ifndef HAVE_STRSIGNAL
412/* Not exactly the same: instead of "Stopped" it shows "STOP" etc */
413# define strsignal(sig) get_signame(sig)
Dan Fandrich21a542d2009-10-27 11:05:00 +0100414#endif
415
Dan Fandrichfe4e23f2009-11-01 04:01:30 +0100416#ifndef HAVE_VASPRINTF
417extern int vasprintf(char **string_ptr, const char *format, va_list p) FAST_FUNC;
Dan Fandrich21a542d2009-10-27 11:05:00 +0100418#endif
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200419
Denis Vlasenkof81e8db2009-04-09 12:35:13 +0000420#endif