+/* Source compatibility only, ID string not emitted in object file */
+#ifndef __FBSDID
+#define __FBSDID(s)
+#endif
+
+#ifndef __DECONST
+#define __DECONST(type, var) __CAST_AWAY_QUALIFIER(var, const, type)
+#endif
+
+#ifndef __DEVOLATILE
+#define __DEVOLATILE(type, var) __CAST_AWAY_QUALIFIER(var, volatile, type)
+#endif
+
+#ifndef __DEQUALIFY
+#define __DEQUALIFY(type, var) __CAST_AWAY_QUALIFIER(var, const volatile, type)
+#endif
+
+/*
+ * __alloc_size can be used to label function arguments that represent the
+ * size of memory that the function allocates and returns. The one-argument
+ * form labels a single argument that gives the allocation size (where the
+ * arguments are numbered from 1):
+ *
+ * void *malloc(size_t __size) __alloc_size(1);
+ *
+ * The two-argument form handles the case where the size is calculated as the
+ * product of two arguments:
+ *
+ * void *calloc(size_t __count, size_t __size) __alloc_size(1,2);
+ */
+#ifndef __alloc_size
+#if __has_attribute(alloc_size)
+#define __alloc_size(...) __attribute__((alloc_size(__VA_ARGS__)))
+#else
+#define __alloc_size(...)
+#endif
+#endif // __alloc_size
+
+/*
+ * COMPILATION ENVIRONMENTS -- see compat(5) for additional detail
+ *
+ * DEFAULT By default newly complied code will get POSIX APIs plus
+ * Apple API extensions in scope.
+ *
+ * Most users will use this compilation environment to avoid
+ * behavioral differences between 32 and 64 bit code.
+ *
+ * LEGACY Defining _NONSTD_SOURCE will get pre-POSIX APIs plus Apple
+ * API extensions in scope.
+ *
+ * This is generally equivalent to the Tiger release compilation
+ * environment, except that it cannot be applied to 64 bit code;
+ * its use is discouraged.
+ *
+ * We expect this environment to be deprecated in the future.
+ *
+ * STRICT Defining _POSIX_C_SOURCE or _XOPEN_SOURCE restricts the
+ * available APIs to exactly the set of APIs defined by the
+ * corresponding standard, based on the value defined.
+ *
+ * A correct, portable definition for _POSIX_C_SOURCE is 200112L.
+ * A correct, portable definition for _XOPEN_SOURCE is 600L.
+ *
+ * Apple API extensions are not visible in this environment,
+ * which can cause Apple specific code to fail to compile,
+ * or behave incorrectly if prototypes are not in scope or
+ * warnings about missing prototypes are not enabled or ignored.
+ *
+ * In any compilation environment, for correct symbol resolution to occur,
+ * function prototypes must be in scope. It is recommended that all Apple
+ * tools users add either the "-Wall" or "-Wimplicit-function-declaration"
+ * compiler flags to their projects to be warned when a function is being
+ * used without a prototype in scope.
+ */
+
+/* These settings are particular to each product. */
+#ifdef KERNEL
+#define __DARWIN_ONLY_64_BIT_INO_T 0
+#define __DARWIN_ONLY_UNIX_CONFORMANCE 0
+#define __DARWIN_ONLY_VERS_1050 0
+#if defined(__x86_64__)
+#define __DARWIN_SUF_DARWIN14 "_darwin14"
+#define __DARWIN14_ALIAS(sym) __asm("_" __STRING(sym) __DARWIN_SUF_DARWIN14)
+#else
+#define __DARWIN14_ALIAS(sym)
+#endif
+#else /* !KERNEL */
+#ifdef PLATFORM_iPhoneOS
+/* Platform: iPhoneOS */
+#define __DARWIN_ONLY_64_BIT_INO_T 1
+#define __DARWIN_ONLY_UNIX_CONFORMANCE 1
+#define __DARWIN_ONLY_VERS_1050 1
+#endif /* PLATFORM_iPhoneOS */
+#ifdef PLATFORM_iPhoneSimulator
+/* Platform: iPhoneSimulator */
+#define __DARWIN_ONLY_64_BIT_INO_T 1
+#define __DARWIN_ONLY_UNIX_CONFORMANCE 1
+#define __DARWIN_ONLY_VERS_1050 1
+#endif /* PLATFORM_iPhoneSimulator */
+#ifdef PLATFORM_tvOS
+/* Platform: tvOS */
+#define __DARWIN_ONLY_64_BIT_INO_T 1
+#define __DARWIN_ONLY_UNIX_CONFORMANCE 1
+#define __DARWIN_ONLY_VERS_1050 1
+#endif /* PLATFORM_tvOS */
+#ifdef PLATFORM_AppleTVOS
+/* Platform: AppleTVOS */
+#define __DARWIN_ONLY_64_BIT_INO_T 1
+#define __DARWIN_ONLY_UNIX_CONFORMANCE 1
+#define __DARWIN_ONLY_VERS_1050 1
+#endif /* PLATFORM_AppleTVOS */
+#ifdef PLATFORM_tvSimulator
+/* Platform: tvSimulator */
+#define __DARWIN_ONLY_64_BIT_INO_T 1
+#define __DARWIN_ONLY_UNIX_CONFORMANCE 1
+#define __DARWIN_ONLY_VERS_1050 1
+#endif /* PLATFORM_tvSimulator */
+#ifdef PLATFORM_AppleTVSimulator
+/* Platform: AppleTVSimulator */
+#define __DARWIN_ONLY_64_BIT_INO_T 1
+#define __DARWIN_ONLY_UNIX_CONFORMANCE 1
+#define __DARWIN_ONLY_VERS_1050 1
+#endif /* PLATFORM_AppleTVSimulator */
+#ifdef PLATFORM_iPhoneOSNano
+/* Platform: iPhoneOSNano */
+#define __DARWIN_ONLY_64_BIT_INO_T 1
+#define __DARWIN_ONLY_UNIX_CONFORMANCE 1
+#define __DARWIN_ONLY_VERS_1050 1
+#endif /* PLATFORM_iPhoneOSNano */
+#ifdef PLATFORM_iPhoneNanoSimulator
+/* Platform: iPhoneNanoSimulator */
+#define __DARWIN_ONLY_64_BIT_INO_T 1
+#define __DARWIN_ONLY_UNIX_CONFORMANCE 1
+#define __DARWIN_ONLY_VERS_1050 1
+#endif /* PLATFORM_iPhoneNanoSimulator */
+#ifdef PLATFORM_WatchOS
+/* Platform: WatchOS */
+#define __DARWIN_ONLY_64_BIT_INO_T 1
+#define __DARWIN_ONLY_UNIX_CONFORMANCE 1
+#define __DARWIN_ONLY_VERS_1050 1
+#endif /* PLATFORM_WatchOS */
+#ifdef PLATFORM_WatchSimulator
+/* Platform: WatchSimulator */
+#define __DARWIN_ONLY_64_BIT_INO_T 1
+#define __DARWIN_ONLY_UNIX_CONFORMANCE 1
+#define __DARWIN_ONLY_VERS_1050 1
+#endif /* PLATFORM_WatchSimulator */
+#ifdef PLATFORM_BridgeOS
+/* Platform: BridgeOS */
+#define __DARWIN_ONLY_64_BIT_INO_T 1
+#define __DARWIN_ONLY_UNIX_CONFORMANCE 1
+#define __DARWIN_ONLY_VERS_1050 1
+#endif /* PLATFORM_BridgeOS */
+#ifdef PLATFORM_DriverKit
+/* Platform: DriverKit */
+#define __DARWIN_ONLY_64_BIT_INO_T 1
+#define __DARWIN_ONLY_UNIX_CONFORMANCE 1
+#define __DARWIN_ONLY_VERS_1050 1
+#endif /* PLATFORM_DriverKit */
+#ifdef PLATFORM_MacOSX
+/* Platform: MacOSX */
+#if defined(__i386__)
+#define __DARWIN_ONLY_64_BIT_INO_T 0
+#define __DARWIN_ONLY_UNIX_CONFORMANCE 0
+#define __DARWIN_ONLY_VERS_1050 0
+#elif defined(__x86_64__)
+#define __DARWIN_ONLY_64_BIT_INO_T 0
+#define __DARWIN_ONLY_UNIX_CONFORMANCE 1
+#define __DARWIN_ONLY_VERS_1050 0
+#else
+#define __DARWIN_ONLY_64_BIT_INO_T 1
+#define __DARWIN_ONLY_UNIX_CONFORMANCE 1
+#define __DARWIN_ONLY_VERS_1050 1
+#endif
+#endif /* PLATFORM_MacOSX */
+#endif /* KERNEL */
+
+/*
+ * The __DARWIN_ALIAS macros are used to do symbol renaming; they allow
+ * legacy code to use the old symbol, thus maintaining binary compatibility
+ * while new code can use a standards compliant version of the same function.
+ *
+ * __DARWIN_ALIAS is used by itself if the function signature has not
+ * changed, it is used along with a #ifdef check for __DARWIN_UNIX03
+ * if the signature has changed. Because the __LP64__ environment
+ * only supports UNIX03 semantics it causes __DARWIN_UNIX03 to be
+ * defined, but causes __DARWIN_ALIAS to do no symbol mangling.
+ *
+ * As a special case, when XCode is used to target a specific version of the
+ * OS, the manifest constant __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__
+ * will be defined by the compiler, with the digits representing major version
+ * time 100 + minor version times 10 (e.g. 10.5 := 1050). If we are targeting
+ * pre-10.5, and it is the default compilation environment, revert the
+ * compilation environment to pre-__DARWIN_UNIX03.
+ */
+#if !defined(__DARWIN_UNIX03)
+# if defined(KERNEL)
+# define __DARWIN_UNIX03 0
+# elif __DARWIN_ONLY_UNIX_CONFORMANCE
+# if defined(_NONSTD_SOURCE)
+# error "Can't define _NONSTD_SOURCE when only UNIX conformance is available."
+# endif /* _NONSTD_SOURCE */
+# define __DARWIN_UNIX03 1
+# elif defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && ((__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ - 0) < 1040)
+# define __DARWIN_UNIX03 0
+# elif defined(_DARWIN_C_SOURCE) || defined(_XOPEN_SOURCE) || defined(_POSIX_C_SOURCE)
+# if defined(_NONSTD_SOURCE)
+# error "Can't define both _NONSTD_SOURCE and any of _DARWIN_C_SOURCE, _XOPEN_SOURCE or _POSIX_C_SOURCE."
+# endif /* _NONSTD_SOURCE */
+# define __DARWIN_UNIX03 1
+# elif defined(_NONSTD_SOURCE)
+# define __DARWIN_UNIX03 0
+# else /* default */
+# if defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && ((__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ - 0) < 1050)
+# define __DARWIN_UNIX03 0
+# else /* __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1050 */
+# define __DARWIN_UNIX03 1
+# endif /* __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1050 */
+# endif /* _DARWIN_C_SOURCE || _XOPEN_SOURCE || _POSIX_C_SOURCE || __LP64__ */
+#endif /* !__DARWIN_UNIX03 */
+
+#if !defined(__DARWIN_64_BIT_INO_T)
+# if defined(KERNEL)
+# define __DARWIN_64_BIT_INO_T 0
+# elif defined(_DARWIN_USE_64_BIT_INODE)
+# if defined(_DARWIN_NO_64_BIT_INODE)
+# error "Can't define both _DARWIN_USE_64_BIT_INODE and _DARWIN_NO_64_BIT_INODE."
+# endif /* _DARWIN_NO_64_BIT_INODE */
+# define __DARWIN_64_BIT_INO_T 1
+# elif defined(_DARWIN_NO_64_BIT_INODE)
+# if __DARWIN_ONLY_64_BIT_INO_T
+# error "Can't define _DARWIN_NO_64_BIT_INODE when only 64-bit inodes are available."
+# endif /* __DARWIN_ONLY_64_BIT_INO_T */
+# define __DARWIN_64_BIT_INO_T 0
+# else /* default */
+# if __DARWIN_ONLY_64_BIT_INO_T
+# define __DARWIN_64_BIT_INO_T 1
+# elif defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && ((__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ - 0) < 1060) || __DARWIN_UNIX03 == 0
+# define __DARWIN_64_BIT_INO_T 0
+# else /* default */
+# define __DARWIN_64_BIT_INO_T 1
+# endif /* __DARWIN_ONLY_64_BIT_INO_T */
+# endif
+#endif /* !__DARWIN_64_BIT_INO_T */
+
+#if !defined(__DARWIN_VERS_1050)
+# if defined(KERNEL)
+# define __DARWIN_VERS_1050 0
+# elif __DARWIN_ONLY_VERS_1050
+# define __DARWIN_VERS_1050 1
+# elif defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && ((__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ - 0) < 1050) || __DARWIN_UNIX03 == 0
+# define __DARWIN_VERS_1050 0
+# else /* default */
+# define __DARWIN_VERS_1050 1
+# endif
+#endif /* !__DARWIN_VERS_1050 */
+
+#if !defined(__DARWIN_NON_CANCELABLE)
+# if defined(KERNEL)
+# define __DARWIN_NON_CANCELABLE 0
+# else /* default */
+# define __DARWIN_NON_CANCELABLE 0
+# endif
+#endif /* !__DARWIN_NON_CANCELABLE */
+
+/*
+ * symbol suffixes used for symbol versioning
+ */
+#if __DARWIN_UNIX03
+# if __DARWIN_ONLY_UNIX_CONFORMANCE
+# define __DARWIN_SUF_UNIX03 /* nothing */
+# else /* !__DARWIN_ONLY_UNIX_CONFORMANCE */
+# define __DARWIN_SUF_UNIX03 "$UNIX2003"
+# endif /* __DARWIN_ONLY_UNIX_CONFORMANCE */
+
+# if __DARWIN_64_BIT_INO_T
+# if __DARWIN_ONLY_64_BIT_INO_T
+# define __DARWIN_SUF_64_BIT_INO_T /* nothing */
+# else /* !__DARWIN_ONLY_64_BIT_INO_T */
+# define __DARWIN_SUF_64_BIT_INO_T "$INODE64"
+# endif /* __DARWIN_ONLY_64_BIT_INO_T */
+# else /* !__DARWIN_64_BIT_INO_T */
+# define __DARWIN_SUF_64_BIT_INO_T /* nothing */
+# endif /* __DARWIN_64_BIT_INO_T */
+
+# if __DARWIN_VERS_1050
+# if __DARWIN_ONLY_VERS_1050
+# define __DARWIN_SUF_1050 /* nothing */
+# else /* !__DARWIN_ONLY_VERS_1050 */
+# define __DARWIN_SUF_1050 "$1050"
+# endif /* __DARWIN_ONLY_VERS_1050 */
+# else /* !__DARWIN_VERS_1050 */
+# define __DARWIN_SUF_1050 /* nothing */
+# endif /* __DARWIN_VERS_1050 */
+
+# if __DARWIN_NON_CANCELABLE
+# define __DARWIN_SUF_NON_CANCELABLE "$NOCANCEL"
+# else /* !__DARWIN_NON_CANCELABLE */
+# define __DARWIN_SUF_NON_CANCELABLE /* nothing */
+# endif /* __DARWIN_NON_CANCELABLE */
+
+#else /* !__DARWIN_UNIX03 */
+# define __DARWIN_SUF_UNIX03 /* nothing */
+# define __DARWIN_SUF_64_BIT_INO_T /* nothing */
+# define __DARWIN_SUF_NON_CANCELABLE /* nothing */
+# define __DARWIN_SUF_1050 /* nothing */
+#endif /* __DARWIN_UNIX03 */
+
+#define __DARWIN_SUF_EXTSN "$DARWIN_EXTSN"
+
+/*
+ * symbol versioning macros
+ */
+#define __DARWIN_ALIAS(sym) __asm("_" __STRING(sym) __DARWIN_SUF_UNIX03)
+#define __DARWIN_ALIAS_C(sym) __asm("_" __STRING(sym) __DARWIN_SUF_NON_CANCELABLE __DARWIN_SUF_UNIX03)
+#define __DARWIN_ALIAS_I(sym) __asm("_" __STRING(sym) __DARWIN_SUF_64_BIT_INO_T __DARWIN_SUF_UNIX03)
+#define __DARWIN_NOCANCEL(sym) __asm("_" __STRING(sym) __DARWIN_SUF_NON_CANCELABLE)
+#define __DARWIN_INODE64(sym) __asm("_" __STRING(sym) __DARWIN_SUF_64_BIT_INO_T)
+
+#define __DARWIN_1050(sym) __asm("_" __STRING(sym) __DARWIN_SUF_1050)
+#define __DARWIN_1050ALIAS(sym) __asm("_" __STRING(sym) __DARWIN_SUF_1050 __DARWIN_SUF_UNIX03)
+#define __DARWIN_1050ALIAS_C(sym) __asm("_" __STRING(sym) __DARWIN_SUF_1050 __DARWIN_SUF_NON_CANCELABLE __DARWIN_SUF_UNIX03)
+#define __DARWIN_1050ALIAS_I(sym) __asm("_" __STRING(sym) __DARWIN_SUF_1050 __DARWIN_SUF_64_BIT_INO_T __DARWIN_SUF_UNIX03)
+#define __DARWIN_1050INODE64(sym) __asm("_" __STRING(sym) __DARWIN_SUF_1050 __DARWIN_SUF_64_BIT_INO_T)
+
+#define __DARWIN_EXTSN(sym) __asm("_" __STRING(sym) __DARWIN_SUF_EXTSN)
+#define __DARWIN_EXTSN_C(sym) __asm("_" __STRING(sym) __DARWIN_SUF_EXTSN __DARWIN_SUF_NON_CANCELABLE)
+#if XNU_KERNEL_PRIVATE
+#define __XNU_INTERNAL(sym) __asm("_" __STRING(sym) "$XNU_INTERNAL")
+#endif
+
+/*
+ * symbol release macros
+ */
+#ifdef KERNEL
+#define __DARWIN_ALIAS_STARTING(_mac, _iphone, x)
+#else
+#include <sys/_symbol_aliasing.h>
+
+#if defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__)
+#define __DARWIN_ALIAS_STARTING(_mac, _iphone, x) __DARWIN_ALIAS_STARTING_IPHONE_##_iphone(x)
+#elif defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__)
+#define __DARWIN_ALIAS_STARTING(_mac, _iphone, x) __DARWIN_ALIAS_STARTING_MAC_##_mac(x)
+#else
+#define __DARWIN_ALIAS_STARTING(_mac, _iphone, x) x
+#endif
+#endif /* KERNEL */
+
+
+/*
+ * POSIX.1 requires that the macros we test be defined before any standard
+ * header file is included. This permits us to convert values for feature
+ * testing, as necessary, using only _POSIX_C_SOURCE.
+ *
+ * Here's a quick run-down of the versions:
+ * defined(_POSIX_SOURCE) 1003.1-1988
+ * _POSIX_C_SOURCE == 1L 1003.1-1990
+ * _POSIX_C_SOURCE == 2L 1003.2-1992 C Language Binding Option
+ * _POSIX_C_SOURCE == 199309L 1003.1b-1993
+ * _POSIX_C_SOURCE == 199506L 1003.1c-1995, 1003.1i-1995,
+ * and the omnibus ISO/IEC 9945-1: 1996
+ * _POSIX_C_SOURCE == 200112L 1003.1-2001
+ * _POSIX_C_SOURCE == 200809L 1003.1-2008
+ *
+ * In addition, the X/Open Portability Guide, which is now the Single UNIX
+ * Specification, defines a feature-test macro which indicates the version of
+ * that specification, and which subsumes _POSIX_C_SOURCE.
+ */
+
+/* Deal with IEEE Std. 1003.1-1990, in which _POSIX_C_SOURCE == 1L. */
+#if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE == 1L
+#undef _POSIX_C_SOURCE
+#define _POSIX_C_SOURCE 199009L
+#endif
+
+/* Deal with IEEE Std. 1003.2-1992, in which _POSIX_C_SOURCE == 2L. */
+#if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE == 2L
+#undef _POSIX_C_SOURCE
+#define _POSIX_C_SOURCE 199209L
+#endif
+
+/* Deal with various X/Open Portability Guides and Single UNIX Spec. */
+#ifdef _XOPEN_SOURCE
+#if _XOPEN_SOURCE - 0L >= 700L && (!defined(_POSIX_C_SOURCE) || _POSIX_C_SOURCE - 0L < 200809L)
+#undef _POSIX_C_SOURCE
+#define _POSIX_C_SOURCE 200809L
+#elif _XOPEN_SOURCE - 0L >= 600L && (!defined(_POSIX_C_SOURCE) || _POSIX_C_SOURCE - 0L < 200112L)
+#undef _POSIX_C_SOURCE
+#define _POSIX_C_SOURCE 200112L
+#elif _XOPEN_SOURCE - 0L >= 500L && (!defined(_POSIX_C_SOURCE) || _POSIX_C_SOURCE - 0L < 199506L)
+#undef _POSIX_C_SOURCE
+#define _POSIX_C_SOURCE 199506L
+#endif
+#endif
+
+/*
+ * Deal with all versions of POSIX. The ordering relative to the tests above is
+ * important.
+ */
+#if defined(_POSIX_SOURCE) && !defined(_POSIX_C_SOURCE)
+#define _POSIX_C_SOURCE 198808L
+#endif
+
+/* POSIX C deprecation macros */
+#ifdef KERNEL
+#define __POSIX_C_DEPRECATED(ver)
+#else
+#include <sys/_posix_availability.h>
+
+#define __POSIX_C_DEPRECATED(ver) ___POSIX_C_DEPRECATED_STARTING_##ver
+#endif
+
+/*
+ * Set a single macro which will always be defined and can be used to determine
+ * the appropriate namespace. For POSIX, these values will correspond to
+ * _POSIX_C_SOURCE value. Currently there are two additional levels corresponding
+ * to ANSI (_ANSI_SOURCE) and Darwin extensions (_DARWIN_C_SOURCE)
+ */
+#define __DARWIN_C_ANSI 010000L
+#define __DARWIN_C_FULL 900000L
+
+#if defined(_ANSI_SOURCE)
+#define __DARWIN_C_LEVEL __DARWIN_C_ANSI
+#elif defined(_POSIX_C_SOURCE) && !defined(_DARWIN_C_SOURCE) && !defined(_NONSTD_SOURCE)
+#define __DARWIN_C_LEVEL _POSIX_C_SOURCE
+#else
+#define __DARWIN_C_LEVEL __DARWIN_C_FULL
+#endif
+
+/* If the developer has neither requested a strict language mode nor a version
+ * of POSIX, turn on functionality provided by __STDC_WANT_LIB_EXT1__ as part
+ * of __DARWIN_C_FULL.
+ */
+#if !defined(__STDC_WANT_LIB_EXT1__) && !defined(__STRICT_ANSI__) && __DARWIN_C_LEVEL >= __DARWIN_C_FULL
+#define __STDC_WANT_LIB_EXT1__ 1
+#endif
+
+/*
+ * long long is not supported in c89 (__STRICT_ANSI__), but g++ -ansi and
+ * c99 still want long longs. While not perfect, we allow long longs for
+ * g++.
+ */
+#if (defined(__STRICT_ANSI__) && (__STDC_VERSION__ - 0 < 199901L) && !defined(__GNUG__))
+#define __DARWIN_NO_LONG_LONG 1
+#else
+#define __DARWIN_NO_LONG_LONG 0
+#endif
+
+/*****************************************
+* Public darwin-specific feature macros
+*****************************************/
+
+/*
+ * _DARWIN_FEATURE_64_BIT_INODE indicates that the ino_t type is 64-bit, and
+ * structures modified for 64-bit inodes (like struct stat) will be used.
+ */
+#if __DARWIN_64_BIT_INO_T
+#define _DARWIN_FEATURE_64_BIT_INODE 1
+#endif
+
+/*
+ * _DARWIN_FEATURE_64_ONLY_BIT_INODE indicates that the ino_t type may only
+ * be 64-bit; there is no support for 32-bit ino_t when this macro is defined
+ * (and non-zero). There is no struct stat64 either, as the regular
+ * struct stat will already be the 64-bit version.
+ */
+#if __DARWIN_ONLY_64_BIT_INO_T
+#define _DARWIN_FEATURE_ONLY_64_BIT_INODE 1
+#endif
+
+/*
+ * _DARWIN_FEATURE_ONLY_VERS_1050 indicates that only those APIs updated
+ * in 10.5 exists; no pre-10.5 variants are available.
+ */
+#if __DARWIN_ONLY_VERS_1050
+#define _DARWIN_FEATURE_ONLY_VERS_1050 1
+#endif
+
+/*
+ * _DARWIN_FEATURE_ONLY_UNIX_CONFORMANCE indicates only UNIX conforming API
+ * are available (the legacy BSD APIs are not available)
+ */
+#if __DARWIN_ONLY_UNIX_CONFORMANCE
+#define _DARWIN_FEATURE_ONLY_UNIX_CONFORMANCE 1
+#endif
+
+/*
+ * _DARWIN_FEATURE_UNIX_CONFORMANCE indicates whether UNIX conformance is on,
+ * and specifies the conformance level (3 is SUSv3)
+ */
+#if __DARWIN_UNIX03
+#define _DARWIN_FEATURE_UNIX_CONFORMANCE 3
+#endif
+
+#if defined(DRIVERKIT) && !defined(KERNEL)
+/*
+ * __DRIVERKIT_LIBC__ indicates to the C++ standard library headers and
+ * similar components that only the restricted set of standard C library
+ * functionality and headers for the DriverKit userspace driver environment
+ * are available.
+ */
+#define __DRIVERKIT_LIBC__ 1
+#endif /* defined(DRIVERKIT) && !defined(KERNEL) */
+
+/*
+ * This macro casts away the qualifier from the variable
+ *
+ * Note: use at your own risk, removing qualifiers can result in
+ * catastrophic run-time failures.
+ */
+#ifndef __CAST_AWAY_QUALIFIER
+#define __CAST_AWAY_QUALIFIER(variable, qualifier, type) (type) (long)(variable)
+#endif
+
+/*
+ * __XNU_PRIVATE_EXTERN is a linkage decoration indicating that a symbol can be
+ * used from other compilation units, but not other libraries or executables.
+ */
+#ifndef __XNU_PRIVATE_EXTERN
+#define __XNU_PRIVATE_EXTERN __attribute__((visibility("hidden")))
+#endif
+
+/*
+ * Architecture validation for current SDK
+ */
+#if !defined(__sys_cdefs_arch_unknown__) && defined(__i386__)
+#elif !defined(__sys_cdefs_arch_unknown__) && defined(__x86_64__)
+#elif !defined(__sys_cdefs_arch_unknown__) && defined(__arm__)
+#elif !defined(__sys_cdefs_arch_unknown__) && defined(__arm64__)
+#else
+#error Unsupported architecture
+#endif
+
+#ifdef XNU_KERNEL_PRIVATE
+/*
+ * Selectively ignore cast alignment warnings
+ */
+#define __IGNORE_WCASTALIGN(x) _Pragma("clang diagnostic push") \
+ _Pragma("clang diagnostic ignored \"-Wcast-align\"") \
+ x; \
+ _Pragma("clang diagnostic pop")
+#endif
+
+#if defined(PRIVATE) || defined(KERNEL)
+/*
+ * Check if __probable and __improbable have already been defined elsewhere.
+ * These macros inform the compiler (and humans) about which branches are likely
+ * to be taken.
+ */
+#if !defined(__probable) && !defined(__improbable)
+#define __probable(x) __builtin_expect(!!(x), 1)
+#define __improbable(x) __builtin_expect(!!(x), 0)
+#endif /* !defined(__probable) && !defined(__improbable) */
+
+#if defined(__cplusplus)
+#define __container_of(ptr, type, field) __extension__({ \
+ const __typeof__(((type *)nullptr)->field) *__ptr = (ptr); \
+ (type *)((uintptr_t)__ptr - offsetof(type, field)); \
+ })
+#else
+#define __container_of(ptr, type, field) __extension__({ \
+ const __typeof__(((type *)NULL)->field) *__ptr = (ptr); \
+ (type *)((uintptr_t)__ptr - offsetof(type, field)); \
+ })
+#endif
+
+#endif /* KERNEL || PRIVATE */
+
+#define __compiler_barrier() __asm__ __volatile__("" ::: "memory")
+
+#if __has_attribute(enum_extensibility)
+#define __enum_open __attribute__((__enum_extensibility__(open)))
+#define __enum_closed __attribute__((__enum_extensibility__(closed)))
+#else
+#define __enum_open
+#define __enum_closed
+#endif // __has_attribute(enum_extensibility)
+
+#if __has_attribute(flag_enum)
+#define __enum_options __attribute__((__flag_enum__))
+#else
+#define __enum_options
+#endif
+
+/*
+ * Similar to OS_ENUM/OS_CLOSED_ENUM/OS_OPTIONS/OS_CLOSED_OPTIONS
+ *
+ * This provides more advanced type checking on compilers supporting
+ * the proper extensions, even in C.
+ */
+#if __has_feature(objc_fixed_enum) || __has_extension(cxx_fixed_enum) || \
+ __has_extension(cxx_strong_enums)
+#define __enum_decl(_name, _type, ...) \
+ typedef enum : _type __VA_ARGS__ __enum_open _name
+#define __enum_closed_decl(_name, _type, ...) \
+ typedef enum : _type __VA_ARGS__ __enum_closed _name
+#define __options_decl(_name, _type, ...) \
+ typedef enum : _type __VA_ARGS__ __enum_open __enum_options _name
+#define __options_closed_decl(_name, _type, ...) \
+ typedef enum : _type __VA_ARGS__ __enum_closed __enum_options _name
+#else
+#define __enum_decl(_name, _type, ...) \
+ typedef _type _name; enum __VA_ARGS__ __enum_open
+#define __enum_closed_decl(_name, _type, ...) \
+ typedef _type _name; enum __VA_ARGS__ __enum_closed
+#define __options_decl(_name, _type, ...) \
+ typedef _type _name; enum __VA_ARGS__ __enum_open __enum_options
+#define __options_closed_decl(_name, _type, ...) \
+ typedef _type _name; enum __VA_ARGS__ __enum_closed __enum_options
+#endif
+
projects / apple / xnu.git / blobdiff