1 /* 2 * Copyright (c) 2000-2018 Apple Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28 /* Copyright 1995 NeXT Computer, Inc. All rights reserved. */ 29 /* 30 * Copyright (c) 1991, 1993 31 * The Regents of the University of California. All rights reserved. 32 * 33 * This code is derived from software contributed to Berkeley by 34 * Berkeley Software Design, Inc. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. All advertising materials mentioning features or use of this software 45 * must display the following acknowledgement: 46 * This product includes software developed by the University of 47 * California, Berkeley and its contributors. 48 * 4. Neither the name of the University nor the names of its contributors 49 * may be used to endorse or promote products derived from this software 50 * without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 55 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 62 * SUCH DAMAGE. 63 * 64 * @(#)cdefs.h 8.8 (Berkeley) 1/9/95 65 */ 66 67 #ifndef _CDEFS_H_ 68 #define _CDEFS_H_ 69 70 #if defined(__cplusplus) 71 #define __BEGIN_DECLS extern "C" { 72 #define __END_DECLS } 73 #else 74 #define __BEGIN_DECLS 75 #define __END_DECLS 76 #endif 77 78 /* This SDK is designed to work with clang and specific versions of 79 * gcc >= 4.0 with Apple's patch sets */ 80 #if !defined(__GNUC__) || __GNUC__ < 4 81 #warning "Unsupported compiler detected" 82 #endif 83 84 /* 85 * Compatibility with compilers and environments that don't support compiler 86 * feature checking function-like macros. 87 */ 88 #ifndef __has_builtin 89 #define __has_builtin(x) 0 90 #endif 91 #ifndef __has_include 92 #define __has_include(x) 0 93 #endif 94 #ifndef __has_feature 95 #define __has_feature(x) 0 96 #endif 97 #ifndef __has_attribute 98 #define __has_attribute(x) 0 99 #endif 100 #ifndef __has_extension 101 #define __has_extension(x) 0 102 #endif 103 104 /* 105 * The __CONCAT macro is used to concatenate parts of symbol names, e.g. 106 * with "#define OLD(foo) __CONCAT(old,foo)", OLD(foo) produces oldfoo. 107 * The __CONCAT macro is a bit tricky -- make sure you don't put spaces 108 * in between its arguments. __CONCAT can also concatenate double-quoted 109 * strings produced by the __STRING macro, but this only works with ANSI C. 110 */ 111 #if defined(__STDC__) || defined(__cplusplus) 112 #define __P(protos) protos /* full-blown ANSI C */ 113 #define __CONCAT(x, y) x ## y 114 #define __STRING(x) #x 115 116 #define __const const /* define reserved names to standard */ 117 #define __signed signed 118 #define __volatile volatile 119 #if defined(__cplusplus) 120 #define __inline inline /* convert to C++ keyword */ 121 #else 122 #ifndef __GNUC__ 123 #define __inline /* delete GCC keyword */ 124 #endif /* !__GNUC__ */ 125 #endif /* !__cplusplus */ 126 127 #else /* !(__STDC__ || __cplusplus) */ 128 #define __P(protos) () /* traditional C preprocessor */ 129 #define __CONCAT(x, y) x /**/ y 130 #define __STRING(x) "x" 131 132 #ifndef __GNUC__ 133 #define __const /* delete pseudo-ANSI C keywords */ 134 #define __inline 135 #define __signed 136 #define __volatile 137 #endif /* !__GNUC__ */ 138 139 /* 140 * In non-ANSI C environments, new programs will want ANSI-only C keywords 141 * deleted from the program and old programs will want them left alone. 142 * When using a compiler other than gcc, programs using the ANSI C keywords 143 * const, inline etc. as normal identifiers should define -DNO_ANSI_KEYWORDS. 144 * When using "gcc -traditional", we assume that this is the intent; if 145 * __GNUC__ is defined but __STDC__ is not, we leave the new keywords alone. 146 */ 147 #ifndef NO_ANSI_KEYWORDS 148 #define const __const /* convert ANSI C keywords */ 149 #define inline __inline 150 #define signed __signed 151 #define volatile __volatile 152 #endif /* !NO_ANSI_KEYWORDS */ 153 #endif /* !(__STDC__ || __cplusplus) */ 154 155 /* 156 * __pure2 can be used for functions that are only a function of their scalar 157 * arguments (meaning they can't dereference pointers). 158 * 159 * __stateful_pure can be used for functions that have no side effects, 160 * but depend on the state of the memory. 161 */ 162 #define __dead2 __attribute__((__noreturn__)) 163 #define __pure2 __attribute__((__const__)) 164 #define __stateful_pure __attribute__((__pure__)) 165 166 /* __unused denotes variables and functions that may not be used, preventing 167 * the compiler from warning about it if not used. 168 */ 169 #define __unused __attribute__((__unused__)) 170 171 /* __used forces variables and functions to be included even if it appears 172 * to the compiler that they are not used (and would thust be discarded). 173 */ 174 #define __used __attribute__((__used__)) 175 176 /* __cold marks code used for debugging or that is rarely taken 177 * and tells the compiler to optimize for size and outline code. 178 */ 179 #if __has_attribute(cold) 180 #define __cold __attribute__((__cold__)) 181 #else 182 #define __cold 183 #endif 184 185 /* __exported denotes symbols that should be exported even when symbols 186 * are hidden by default. 187 * __exported_push/_exported_pop are pragmas used to delimit a range of 188 * symbols that should be exported even when symbols are hidden by default. 189 */ 190 #define __exported __attribute__((__visibility__("default"))) 191 #define __exported_push _Pragma("GCC visibility push(default)") 192 #define __exported_pop _Pragma("GCC visibility pop") 193 194 /* __deprecated causes the compiler to produce a warning when encountering 195 * code using the deprecated functionality. 196 * __deprecated_msg() does the same, and compilers that support it will print 197 * a message along with the deprecation warning. 198 * This may require turning on such warning with the -Wdeprecated flag. 199 * __deprecated_enum_msg() should be used on enums, and compilers that support 200 * it will print the deprecation warning. 201 * __kpi_deprecated() specifically indicates deprecation of kernel programming 202 * interfaces in Kernel.framework used by KEXTs. 203 */ 204 #define __deprecated __attribute__((__deprecated__)) 205 206 #if __has_extension(attribute_deprecated_with_message) || \ 207 (defined(__GNUC__) && ((__GNUC__ >= 5) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 5)))) 208 #define __deprecated_msg(_msg) __attribute__((__deprecated__(_msg))) 209 #else 210 #define __deprecated_msg(_msg) __attribute__((__deprecated__)) 211 #endif 212 213 #if __has_extension(enumerator_attributes) 214 #define __deprecated_enum_msg(_msg) __deprecated_msg(_msg) 215 #else 216 #define __deprecated_enum_msg(_msg) 217 #endif 218 219 #define __kpi_deprecated(_msg) 220 221 /* __unavailable causes the compiler to error out when encountering 222 * code using the tagged function 223 */ 224 #if __has_attribute(unavailable) 225 #define __unavailable __attribute__((__unavailable__)) 226 #else 227 #define __unavailable 228 #endif 229 230 #define __kpi_unavailable 231 232 #define __kpi_deprecated_arm64_macos_unavailable 233 234 /* Delete pseudo-keywords wherever they are not available or needed. */ 235 #ifndef __dead 236 #define __dead 237 #define __pure 238 #endif 239 240 /* 241 * We use `__restrict' as a way to define the `restrict' type qualifier 242 * without disturbing older software that is unaware of C99 keywords. 243 */ 244 #if __STDC_VERSION__ < 199901 245 #define __restrict 246 #else 247 #define __restrict restrict 248 #endif 249 250 /* Compatibility with compilers and environments that don't support the 251 * nullability feature. 252 */ 253 254 #if !__has_feature(nullability) 255 #ifndef __nullable 256 #define __nullable 257 #endif 258 #ifndef __nonnull 259 #define __nonnull 260 #endif 261 #ifndef __null_unspecified 262 #define __null_unspecified 263 #endif 264 #ifndef _Nullable 265 #define _Nullable 266 #endif 267 #ifndef _Nonnull 268 #define _Nonnull 269 #endif 270 #ifndef _Null_unspecified 271 #define _Null_unspecified 272 #endif 273 #endif 274 275 /* 276 * __disable_tail_calls causes the compiler to not perform tail call 277 * optimization inside the marked function. 278 */ 279 #if __has_attribute(disable_tail_calls) 280 #define __disable_tail_calls __attribute__((__disable_tail_calls__)) 281 #else 282 #define __disable_tail_calls 283 #endif 284 285 /* 286 * __not_tail_called causes the compiler to prevent tail call optimization 287 * on statically bound calls to the function. It has no effect on indirect 288 * calls. Virtual functions, objective-c methods, and functions marked as 289 * "always_inline" cannot be marked as __not_tail_called. 290 */ 291 #if __has_attribute(not_tail_called) 292 #define __not_tail_called __attribute__((__not_tail_called__)) 293 #else 294 #define __not_tail_called 295 #endif 296 297 /* 298 * __result_use_check warns callers of a function that not using the function 299 * return value is a bug, i.e. dismissing malloc() return value results in a 300 * memory leak. 301 */ 302 #if __has_attribute(warn_unused_result) 303 #define __result_use_check __attribute__((__warn_unused_result__)) 304 #else 305 #define __result_use_check 306 #endif 307 308 /* 309 * __swift_unavailable causes the compiler to mark a symbol as specifically 310 * unavailable in Swift, regardless of any other availability in C. 311 */ 312 #if __has_feature(attribute_availability_swift) 313 #define __swift_unavailable(_msg) __attribute__((__availability__(swift, unavailable, message=_msg))) 314 #else 315 #define __swift_unavailable(_msg) 316 #endif 317 318 /* 319 * __abortlike is the attribute to put on functions like abort() that are 320 * typically used to mark assertions. These optimize the codegen 321 * for outlining while still maintaining debugability. 322 */ 323 #ifndef __abortlike 324 #define __abortlike __dead2 __cold __not_tail_called 325 #endif 326 327 /* Declaring inline functions within headers is error-prone due to differences 328 * across various versions of the C language and extensions. __header_inline 329 * can be used to declare inline functions within system headers. In cases 330 * where you want to force inlining instead of letting the compiler make 331 * the decision, you can use __header_always_inline. 332 * 333 * Be aware that using inline for functions which compilers may also provide 334 * builtins can behave differently under various compilers. If you intend to 335 * provide an inline version of such a function, you may want to use a macro 336 * instead. 337 * 338 * The check for !__GNUC__ || __clang__ is because gcc doesn't correctly 339 * support c99 inline in some cases: 340 * http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55965 341 */ 342 343 #if defined(__cplusplus) || \ 344 (__STDC_VERSION__ >= 199901L && \ 345 !defined(__GNUC_GNU_INLINE__) && \ 346 (!defined(__GNUC__) || defined(__clang__))) 347 # define __header_inline inline 348 #elif defined(__GNUC__) && defined(__GNUC_STDC_INLINE__) 349 # define __header_inline extern __inline __attribute__((__gnu_inline__)) 350 #elif defined(__GNUC__) 351 # define __header_inline extern __inline 352 #else 353 /* If we land here, we've encountered an unsupported compiler, 354 * so hopefully it understands static __inline as a fallback. 355 */ 356 # define __header_inline static __inline 357 #endif 358 359 #ifdef __GNUC__ 360 # define __header_always_inline __header_inline __attribute__ ((__always_inline__)) 361 #else 362 /* Unfortunately, we're using a compiler that we don't know how to force to 363 * inline. Oh well. 364 */ 365 # define __header_always_inline __header_inline 366 #endif 367 368 /* 369 * Compiler-dependent macros that bracket portions of code where the 370 * "-Wunreachable-code" warning should be ignored. Please use sparingly. 371 */ 372 #if defined(__clang__) 373 # define __unreachable_ok_push \ 374 _Pragma("clang diagnostic push") \ 375 _Pragma("clang diagnostic ignored \"-Wunreachable-code\"") 376 # define __unreachable_ok_pop \ 377 _Pragma("clang diagnostic pop") 378 #elif defined(__GNUC__) && ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)) 379 # define __unreachable_ok_push \ 380 _Pragma("GCC diagnostic push") \ 381 _Pragma("GCC diagnostic ignored \"-Wunreachable-code\"") 382 # define __unreachable_ok_pop \ 383 _Pragma("GCC diagnostic pop") 384 #else 385 # define __unreachable_ok_push 386 # define __unreachable_ok_pop 387 #endif 388 389 /* 390 * Compiler-dependent macros to declare that functions take printf-like 391 * or scanf-like arguments. They are null except for versions of gcc 392 * that are known to support the features properly. Functions declared 393 * with these attributes will cause compilation warnings if there is a 394 * mismatch between the format string and subsequent function parameter 395 * types. 396 */ 397 #define __printflike(fmtarg, firstvararg) \ 398 __attribute__((__format__ (__printf__, fmtarg, firstvararg))) 399 #define __printf0like(fmtarg, firstvararg) \ 400 __attribute__((__format__ (__printf0__, fmtarg, firstvararg))) 401 #define __scanflike(fmtarg, firstvararg) \ 402 __attribute__((__format__ (__scanf__, fmtarg, firstvararg))) 403 404 #define __IDSTRING(name, string) static const char name[] __used = string 405 406 #ifndef __COPYRIGHT 407 #define __COPYRIGHT(s) __IDSTRING(copyright,s) 408 #endif 409 410 #ifndef __RCSID 411 #define __RCSID(s) __IDSTRING(rcsid,s) 412 #endif 413 414 #ifndef __SCCSID 415 #define __SCCSID(s) __IDSTRING(sccsid,s) 416 #endif 417 418 #ifndef __PROJECT_VERSION 419 #define __PROJECT_VERSION(s) __IDSTRING(project_version,s) 420 #endif 421 422 /* Source compatibility only, ID string not emitted in object file */ 423 #ifndef __FBSDID 424 #define __FBSDID(s) 425 #endif 426 427 #ifndef __DECONST 428 #define __DECONST(type, var) __CAST_AWAY_QUALIFIER(var, const, type) 429 #endif 430 431 #ifndef __DEVOLATILE 432 #define __DEVOLATILE(type, var) __CAST_AWAY_QUALIFIER(var, volatile, type) 433 #endif 434 435 #ifndef __DEQUALIFY 436 #define __DEQUALIFY(type, var) __CAST_AWAY_QUALIFIER(var, const volatile, type) 437 #endif 438 439 /* 440 * __alloc_size can be used to label function arguments that represent the 441 * size of memory that the function allocates and returns. The one-argument 442 * form labels a single argument that gives the allocation size (where the 443 * arguments are numbered from 1): 444 * 445 * void *malloc(size_t __size) __alloc_size(1); 446 * 447 * The two-argument form handles the case where the size is calculated as the 448 * product of two arguments: 449 * 450 * void *calloc(size_t __count, size_t __size) __alloc_size(1,2); 451 */ 452 #ifndef __alloc_size 453 #if __has_attribute(alloc_size) 454 #define __alloc_size(...) __attribute__((alloc_size(__VA_ARGS__))) 455 #else 456 #define __alloc_size(...) 457 #endif 458 #endif // __alloc_size 459 460 /* 461 * COMPILATION ENVIRONMENTS -- see compat(5) for additional detail 462 * 463 * DEFAULT By default newly complied code will get POSIX APIs plus 464 * Apple API extensions in scope. 465 * 466 * Most users will use this compilation environment to avoid 467 * behavioral differences between 32 and 64 bit code. 468 * 469 * LEGACY Defining _NONSTD_SOURCE will get pre-POSIX APIs plus Apple 470 * API extensions in scope. 471 * 472 * This is generally equivalent to the Tiger release compilation 473 * environment, except that it cannot be applied to 64 bit code; 474 * its use is discouraged. 475 * 476 * We expect this environment to be deprecated in the future. 477 * 478 * STRICT Defining _POSIX_C_SOURCE or _XOPEN_SOURCE restricts the 479 * available APIs to exactly the set of APIs defined by the 480 * corresponding standard, based on the value defined. 481 * 482 * A correct, portable definition for _POSIX_C_SOURCE is 200112L. 483 * A correct, portable definition for _XOPEN_SOURCE is 600L. 484 * 485 * Apple API extensions are not visible in this environment, 486 * which can cause Apple specific code to fail to compile, 487 * or behave incorrectly if prototypes are not in scope or 488 * warnings about missing prototypes are not enabled or ignored. 489 * 490 * In any compilation environment, for correct symbol resolution to occur, 491 * function prototypes must be in scope. It is recommended that all Apple 492 * tools users add either the "-Wall" or "-Wimplicit-function-declaration" 493 * compiler flags to their projects to be warned when a function is being 494 * used without a prototype in scope. 495 */ 496 497 /* These settings are particular to each product. */ 498 /* Platform: MacOSX */ 499 #if defined(__i386__) 500 #define __DARWIN_ONLY_64_BIT_INO_T 0 501 #define __DARWIN_ONLY_UNIX_CONFORMANCE 0 502 #define __DARWIN_ONLY_VERS_1050 0 503 #elif defined(__x86_64__) 504 #define __DARWIN_ONLY_64_BIT_INO_T 0 505 #define __DARWIN_ONLY_UNIX_CONFORMANCE 1 506 #define __DARWIN_ONLY_VERS_1050 0 507 #else 508 #define __DARWIN_ONLY_64_BIT_INO_T 1 509 #define __DARWIN_ONLY_UNIX_CONFORMANCE 1 510 #define __DARWIN_ONLY_VERS_1050 1 511 #endif 512 513 /* 514 * The __DARWIN_ALIAS macros are used to do symbol renaming; they allow 515 * legacy code to use the old symbol, thus maintaining binary compatibility 516 * while new code can use a standards compliant version of the same function. 517 * 518 * __DARWIN_ALIAS is used by itself if the function signature has not 519 * changed, it is used along with a #ifdef check for __DARWIN_UNIX03 520 * if the signature has changed. Because the __LP64__ environment 521 * only supports UNIX03 semantics it causes __DARWIN_UNIX03 to be 522 * defined, but causes __DARWIN_ALIAS to do no symbol mangling. 523 * 524 * As a special case, when XCode is used to target a specific version of the 525 * OS, the manifest constant __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ 526 * will be defined by the compiler, with the digits representing major version 527 * time 100 + minor version times 10 (e.g. 10.5 := 1050). If we are targeting 528 * pre-10.5, and it is the default compilation environment, revert the 529 * compilation environment to pre-__DARWIN_UNIX03. 530 */ 531 #if !defined(__DARWIN_UNIX03) 532 # if __DARWIN_ONLY_UNIX_CONFORMANCE 533 # if defined(_NONSTD_SOURCE) 534 # error "Can't define _NONSTD_SOURCE when only UNIX conformance is available." 535 # endif /* _NONSTD_SOURCE */ 536 # define __DARWIN_UNIX03 1 537 # elif defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && ((__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ - 0) < 1040) 538 # define __DARWIN_UNIX03 0 539 # elif defined(_DARWIN_C_SOURCE) || defined(_XOPEN_SOURCE) || defined(_POSIX_C_SOURCE) 540 # if defined(_NONSTD_SOURCE) 541 # error "Can't define both _NONSTD_SOURCE and any of _DARWIN_C_SOURCE, _XOPEN_SOURCE or _POSIX_C_SOURCE." 542 # endif /* _NONSTD_SOURCE */ 543 # define __DARWIN_UNIX03 1 544 # elif defined(_NONSTD_SOURCE) 545 # define __DARWIN_UNIX03 0 546 # else /* default */ 547 # if defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && ((__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ - 0) < 1050) 548 # define __DARWIN_UNIX03 0 549 # else /* __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1050 */ 550 # define __DARWIN_UNIX03 1 551 # endif /* __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1050 */ 552 # endif /* _DARWIN_C_SOURCE || _XOPEN_SOURCE || _POSIX_C_SOURCE || __LP64__ */ 553 #endif /* !__DARWIN_UNIX03 */ 554 555 #if !defined(__DARWIN_64_BIT_INO_T) 556 # if defined(_DARWIN_USE_64_BIT_INODE) 557 # if defined(_DARWIN_NO_64_BIT_INODE) 558 # error "Can't define both _DARWIN_USE_64_BIT_INODE and _DARWIN_NO_64_BIT_INODE." 559 # endif /* _DARWIN_NO_64_BIT_INODE */ 560 # define __DARWIN_64_BIT_INO_T 1 561 # elif defined(_DARWIN_NO_64_BIT_INODE) 562 # if __DARWIN_ONLY_64_BIT_INO_T 563 # error "Can't define _DARWIN_NO_64_BIT_INODE when only 64-bit inodes are available." 564 # endif /* __DARWIN_ONLY_64_BIT_INO_T */ 565 # define __DARWIN_64_BIT_INO_T 0 566 # else /* default */ 567 # if __DARWIN_ONLY_64_BIT_INO_T 568 # define __DARWIN_64_BIT_INO_T 1 569 # elif defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && ((__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ - 0) < 1060) || __DARWIN_UNIX03 == 0 570 # define __DARWIN_64_BIT_INO_T 0 571 # else /* default */ 572 # define __DARWIN_64_BIT_INO_T 1 573 # endif /* __DARWIN_ONLY_64_BIT_INO_T */ 574 # endif 575 #endif /* !__DARWIN_64_BIT_INO_T */ 576 577 #if !defined(__DARWIN_VERS_1050) 578 # if __DARWIN_ONLY_VERS_1050 579 # define __DARWIN_VERS_1050 1 580 # elif defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && ((__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ - 0) < 1050) || __DARWIN_UNIX03 == 0 581 # define __DARWIN_VERS_1050 0 582 # else /* default */ 583 # define __DARWIN_VERS_1050 1 584 # endif 585 #endif /* !__DARWIN_VERS_1050 */ 586 587 #if !defined(__DARWIN_NON_CANCELABLE) 588 # define __DARWIN_NON_CANCELABLE 0 589 #endif /* !__DARWIN_NON_CANCELABLE */ 590 591 /* 592 * symbol suffixes used for symbol versioning 593 */ 594 #if __DARWIN_UNIX03 595 # if __DARWIN_ONLY_UNIX_CONFORMANCE 596 # define __DARWIN_SUF_UNIX03 /* nothing */ 597 # else /* !__DARWIN_ONLY_UNIX_CONFORMANCE */ 598 # define __DARWIN_SUF_UNIX03 "$UNIX2003" 599 # endif /* __DARWIN_ONLY_UNIX_CONFORMANCE */ 600 601 # if __DARWIN_64_BIT_INO_T 602 # if __DARWIN_ONLY_64_BIT_INO_T 603 # define __DARWIN_SUF_64_BIT_INO_T /* nothing */ 604 # else /* !__DARWIN_ONLY_64_BIT_INO_T */ 605 # define __DARWIN_SUF_64_BIT_INO_T "$INODE64" 606 # endif /* __DARWIN_ONLY_64_BIT_INO_T */ 607 # else /* !__DARWIN_64_BIT_INO_T */ 608 # define __DARWIN_SUF_64_BIT_INO_T /* nothing */ 609 # endif /* __DARWIN_64_BIT_INO_T */ 610 611 # if __DARWIN_VERS_1050 612 # if __DARWIN_ONLY_VERS_1050 613 # define __DARWIN_SUF_1050 /* nothing */ 614 # else /* !__DARWIN_ONLY_VERS_1050 */ 615 # define __DARWIN_SUF_1050 "$1050" 616 # endif /* __DARWIN_ONLY_VERS_1050 */ 617 # else /* !__DARWIN_VERS_1050 */ 618 # define __DARWIN_SUF_1050 /* nothing */ 619 # endif /* __DARWIN_VERS_1050 */ 620 621 # if __DARWIN_NON_CANCELABLE 622 # define __DARWIN_SUF_NON_CANCELABLE "$NOCANCEL" 623 # else /* !__DARWIN_NON_CANCELABLE */ 624 # define __DARWIN_SUF_NON_CANCELABLE /* nothing */ 625 # endif /* __DARWIN_NON_CANCELABLE */ 626 627 #else /* !__DARWIN_UNIX03 */ 628 # define __DARWIN_SUF_UNIX03 /* nothing */ 629 # define __DARWIN_SUF_64_BIT_INO_T /* nothing */ 630 # define __DARWIN_SUF_NON_CANCELABLE /* nothing */ 631 # define __DARWIN_SUF_1050 /* nothing */ 632 #endif /* __DARWIN_UNIX03 */ 633 634 #define __DARWIN_SUF_EXTSN "$DARWIN_EXTSN" 635 636 /* 637 * symbol versioning macros 638 */ 639 #define __DARWIN_ALIAS(sym) __asm("_" __STRING(sym) __DARWIN_SUF_UNIX03) 640 #define __DARWIN_ALIAS_C(sym) __asm("_" __STRING(sym) __DARWIN_SUF_NON_CANCELABLE __DARWIN_SUF_UNIX03) 641 #define __DARWIN_ALIAS_I(sym) __asm("_" __STRING(sym) __DARWIN_SUF_64_BIT_INO_T __DARWIN_SUF_UNIX03) 642 #define __DARWIN_NOCANCEL(sym) __asm("_" __STRING(sym) __DARWIN_SUF_NON_CANCELABLE) 643 #define __DARWIN_INODE64(sym) __asm("_" __STRING(sym) __DARWIN_SUF_64_BIT_INO_T) 644 645 #define __DARWIN_1050(sym) __asm("_" __STRING(sym) __DARWIN_SUF_1050) 646 #define __DARWIN_1050ALIAS(sym) __asm("_" __STRING(sym) __DARWIN_SUF_1050 __DARWIN_SUF_UNIX03) 647 #define __DARWIN_1050ALIAS_C(sym) __asm("_" __STRING(sym) __DARWIN_SUF_1050 __DARWIN_SUF_NON_CANCELABLE __DARWIN_SUF_UNIX03) 648 #define __DARWIN_1050ALIAS_I(sym) __asm("_" __STRING(sym) __DARWIN_SUF_1050 __DARWIN_SUF_64_BIT_INO_T __DARWIN_SUF_UNIX03) 649 #define __DARWIN_1050INODE64(sym) __asm("_" __STRING(sym) __DARWIN_SUF_1050 __DARWIN_SUF_64_BIT_INO_T) 650 651 #define __DARWIN_EXTSN(sym) __asm("_" __STRING(sym) __DARWIN_SUF_EXTSN) 652 #define __DARWIN_EXTSN_C(sym) __asm("_" __STRING(sym) __DARWIN_SUF_EXTSN __DARWIN_SUF_NON_CANCELABLE) 653 654 /* 655 * symbol release macros 656 */ 657 #include <sys/_symbol_aliasing.h> 658 659 #if defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) 660 #define __DARWIN_ALIAS_STARTING(_mac, _iphone, x) __DARWIN_ALIAS_STARTING_IPHONE_##_iphone(x) 661 #elif defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) 662 #define __DARWIN_ALIAS_STARTING(_mac, _iphone, x) __DARWIN_ALIAS_STARTING_MAC_##_mac(x) 663 #else 664 #define __DARWIN_ALIAS_STARTING(_mac, _iphone, x) x 665 #endif 666 667 668 /* 669 * POSIX.1 requires that the macros we test be defined before any standard 670 * header file is included. This permits us to convert values for feature 671 * testing, as necessary, using only _POSIX_C_SOURCE. 672 * 673 * Here's a quick run-down of the versions: 674 * defined(_POSIX_SOURCE) 1003.1-1988 675 * _POSIX_C_SOURCE == 1L 1003.1-1990 676 * _POSIX_C_SOURCE == 2L 1003.2-1992 C Language Binding Option 677 * _POSIX_C_SOURCE == 199309L 1003.1b-1993 678 * _POSIX_C_SOURCE == 199506L 1003.1c-1995, 1003.1i-1995, 679 * and the omnibus ISO/IEC 9945-1: 1996 680 * _POSIX_C_SOURCE == 200112L 1003.1-2001 681 * _POSIX_C_SOURCE == 200809L 1003.1-2008 682 * 683 * In addition, the X/Open Portability Guide, which is now the Single UNIX 684 * Specification, defines a feature-test macro which indicates the version of 685 * that specification, and which subsumes _POSIX_C_SOURCE. 686 */ 687 688 /* Deal with IEEE Std. 1003.1-1990, in which _POSIX_C_SOURCE == 1L. */ 689 #if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE == 1L 690 #undef _POSIX_C_SOURCE 691 #define _POSIX_C_SOURCE 199009L 692 #endif 693 694 /* Deal with IEEE Std. 1003.2-1992, in which _POSIX_C_SOURCE == 2L. */ 695 #if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE == 2L 696 #undef _POSIX_C_SOURCE 697 #define _POSIX_C_SOURCE 199209L 698 #endif 699 700 /* Deal with various X/Open Portability Guides and Single UNIX Spec. */ 701 #ifdef _XOPEN_SOURCE 702 #if _XOPEN_SOURCE - 0L >= 700L && (!defined(_POSIX_C_SOURCE) || _POSIX_C_SOURCE - 0L < 200809L) 703 #undef _POSIX_C_SOURCE 704 #define _POSIX_C_SOURCE 200809L 705 #elif _XOPEN_SOURCE - 0L >= 600L && (!defined(_POSIX_C_SOURCE) || _POSIX_C_SOURCE - 0L < 200112L) 706 #undef _POSIX_C_SOURCE 707 #define _POSIX_C_SOURCE 200112L 708 #elif _XOPEN_SOURCE - 0L >= 500L && (!defined(_POSIX_C_SOURCE) || _POSIX_C_SOURCE - 0L < 199506L) 709 #undef _POSIX_C_SOURCE 710 #define _POSIX_C_SOURCE 199506L 711 #endif 712 #endif 713 714 /* 715 * Deal with all versions of POSIX. The ordering relative to the tests above is 716 * important. 717 */ 718 #if defined(_POSIX_SOURCE) && !defined(_POSIX_C_SOURCE) 719 #define _POSIX_C_SOURCE 198808L 720 #endif 721 722 /* POSIX C deprecation macros */ 723 #include <sys/_posix_availability.h> 724 725 #define __POSIX_C_DEPRECATED(ver) ___POSIX_C_DEPRECATED_STARTING_##ver 726 727 /* 728 * Set a single macro which will always be defined and can be used to determine 729 * the appropriate namespace. For POSIX, these values will correspond to 730 * _POSIX_C_SOURCE value. Currently there are two additional levels corresponding 731 * to ANSI (_ANSI_SOURCE) and Darwin extensions (_DARWIN_C_SOURCE) 732 */ 733 #define __DARWIN_C_ANSI 010000L 734 #define __DARWIN_C_FULL 900000L 735 736 #if defined(_ANSI_SOURCE) 737 #define __DARWIN_C_LEVEL __DARWIN_C_ANSI 738 #elif defined(_POSIX_C_SOURCE) && !defined(_DARWIN_C_SOURCE) && !defined(_NONSTD_SOURCE) 739 #define __DARWIN_C_LEVEL _POSIX_C_SOURCE 740 #else 741 #define __DARWIN_C_LEVEL __DARWIN_C_FULL 742 #endif 743 744 /* If the developer has neither requested a strict language mode nor a version 745 * of POSIX, turn on functionality provided by __STDC_WANT_LIB_EXT1__ as part 746 * of __DARWIN_C_FULL. 747 */ 748 #if !defined(__STDC_WANT_LIB_EXT1__) && !defined(__STRICT_ANSI__) && __DARWIN_C_LEVEL >= __DARWIN_C_FULL 749 #define __STDC_WANT_LIB_EXT1__ 1 750 #endif 751 752 /* 753 * long long is not supported in c89 (__STRICT_ANSI__), but g++ -ansi and 754 * c99 still want long longs. While not perfect, we allow long longs for 755 * g++. 756 */ 757 #if (defined(__STRICT_ANSI__) && (__STDC_VERSION__ - 0 < 199901L) && !defined(__GNUG__)) 758 #define __DARWIN_NO_LONG_LONG 1 759 #else 760 #define __DARWIN_NO_LONG_LONG 0 761 #endif 762 763 /***************************************** 764 * Public darwin-specific feature macros 765 *****************************************/ 766 767 /* 768 * _DARWIN_FEATURE_64_BIT_INODE indicates that the ino_t type is 64-bit, and 769 * structures modified for 64-bit inodes (like struct stat) will be used. 770 */ 771 #if __DARWIN_64_BIT_INO_T 772 #define _DARWIN_FEATURE_64_BIT_INODE 1 773 #endif 774 775 /* 776 * _DARWIN_FEATURE_64_ONLY_BIT_INODE indicates that the ino_t type may only 777 * be 64-bit; there is no support for 32-bit ino_t when this macro is defined 778 * (and non-zero). There is no struct stat64 either, as the regular 779 * struct stat will already be the 64-bit version. 780 */ 781 #if __DARWIN_ONLY_64_BIT_INO_T 782 #define _DARWIN_FEATURE_ONLY_64_BIT_INODE 1 783 #endif 784 785 /* 786 * _DARWIN_FEATURE_ONLY_VERS_1050 indicates that only those APIs updated 787 * in 10.5 exists; no pre-10.5 variants are available. 788 */ 789 #if __DARWIN_ONLY_VERS_1050 790 #define _DARWIN_FEATURE_ONLY_VERS_1050 1 791 #endif 792 793 /* 794 * _DARWIN_FEATURE_ONLY_UNIX_CONFORMANCE indicates only UNIX conforming API 795 * are available (the legacy BSD APIs are not available) 796 */ 797 #if __DARWIN_ONLY_UNIX_CONFORMANCE 798 #define _DARWIN_FEATURE_ONLY_UNIX_CONFORMANCE 1 799 #endif 800 801 /* 802 * _DARWIN_FEATURE_UNIX_CONFORMANCE indicates whether UNIX conformance is on, 803 * and specifies the conformance level (3 is SUSv3) 804 */ 805 #if __DARWIN_UNIX03 806 #define _DARWIN_FEATURE_UNIX_CONFORMANCE 3 807 #endif 808 809 810 /* 811 * This macro casts away the qualifier from the variable 812 * 813 * Note: use at your own risk, removing qualifiers can result in 814 * catastrophic run-time failures. 815 */ 816 #ifndef __CAST_AWAY_QUALIFIER 817 #define __CAST_AWAY_QUALIFIER(variable, qualifier, type) (type) (long)(variable) 818 #endif 819 820 /* 821 * __XNU_PRIVATE_EXTERN is a linkage decoration indicating that a symbol can be 822 * used from other compilation units, but not other libraries or executables. 823 */ 824 #ifndef __XNU_PRIVATE_EXTERN 825 #define __XNU_PRIVATE_EXTERN __attribute__((visibility("hidden"))) 826 #endif 827 828 829 /* 830 * Architecture validation for current SDK 831 */ 832 #if !defined(__sys_cdefs_arch_unknown__) && defined(__i386__) 833 #elif !defined(__sys_cdefs_arch_unknown__) && defined(__x86_64__) 834 #elif !defined(__sys_cdefs_arch_unknown__) && defined(__arm__) 835 #elif !defined(__sys_cdefs_arch_unknown__) && defined(__arm64__) 836 #else 837 #error Unsupported architecture 838 #endif 839 840 841 842 #define __compiler_barrier() __asm__ __volatile__("" ::: "memory") 843 844 #if __has_attribute(enum_extensibility) 845 #define __enum_open __attribute__((__enum_extensibility__(open))) 846 #define __enum_closed __attribute__((__enum_extensibility__(closed))) 847 #else 848 #define __enum_open 849 #define __enum_closed 850 #endif // __has_attribute(enum_extensibility) 851 852 #if __has_attribute(flag_enum) 853 #define __enum_options __attribute__((__flag_enum__)) 854 #else 855 #define __enum_options 856 #endif 857 858 /* 859 * Similar to OS_ENUM/OS_CLOSED_ENUM/OS_OPTIONS/OS_CLOSED_OPTIONS 860 * 861 * This provides more advanced type checking on compilers supporting 862 * the proper extensions, even in C. 863 */ 864 #if __has_feature(objc_fixed_enum) || __has_extension(cxx_fixed_enum) || \ 865 __has_extension(cxx_strong_enums) 866 #define __enum_decl(_name, _type, ...) \ 867 typedef enum : _type __VA_ARGS__ __enum_open _name 868 #define __enum_closed_decl(_name, _type, ...) \ 869 typedef enum : _type __VA_ARGS__ __enum_closed _name 870 #define __options_decl(_name, _type, ...) \ 871 typedef enum : _type __VA_ARGS__ __enum_open __enum_options _name 872 #define __options_closed_decl(_name, _type, ...) \ 873 typedef enum : _type __VA_ARGS__ __enum_closed __enum_options _name 874 #else 875 #define __enum_decl(_name, _type, ...) \ 876 typedef _type _name; enum __VA_ARGS__ __enum_open 877 #define __enum_closed_decl(_name, _type, ...) \ 878 typedef _type _name; enum __VA_ARGS__ __enum_closed 879 #define __options_decl(_name, _type, ...) \ 880 typedef _type _name; enum __VA_ARGS__ __enum_open __enum_options 881 #define __options_closed_decl(_name, _type, ...) \ 882 typedef _type _name; enum __VA_ARGS__ __enum_closed __enum_options 883 #endif 884 885 886 #define __kernel_ptr_semantics 887 #define __kernel_data_semantics 888 #define __kernel_dual_semantics 889 890 891 #endif /* !_CDEFS_H_ */