diff options
Diffstat (limited to 'lib/builtins/os_version_check.c')
| -rw-r--r-- | lib/builtins/os_version_check.c | 64 |
1 files changed, 31 insertions, 33 deletions
diff --git a/lib/builtins/os_version_check.c b/lib/builtins/os_version_check.c index e0d40edc7..3794b9794 100644 --- a/lib/builtins/os_version_check.c +++ b/lib/builtins/os_version_check.c @@ -1,17 +1,15 @@ -/* ===-- os_version_check.c - OS version checking -------------------------=== - * - * The LLVM Compiler Infrastructure - * - * This file is dual licensed under the MIT and the University of Illinois Open - * Source Licenses. See LICENSE.TXT for details. - * - * ===----------------------------------------------------------------------=== - * - * This file implements the function __isOSVersionAtLeast, used by - * Objective-C's @available - * - * ===----------------------------------------------------------------------=== - */ +//===-- os_version_check.c - OS version checking -------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements the function __isOSVersionAtLeast, used by +// Objective-C's @available +// +//===----------------------------------------------------------------------===// #ifdef __APPLE__ @@ -23,15 +21,15 @@ #include <stdlib.h> #include <string.h> -/* These three variables hold the host's OS version. */ +// These three variables hold the host's OS version. static int32_t GlobalMajor, GlobalMinor, GlobalSubminor; static dispatch_once_t DispatchOnceCounter; -/* We can't include <CoreFoundation/CoreFoundation.h> directly from here, so - * just forward declare everything that we need from it. */ +// We can't include <CoreFoundation/CoreFoundation.h> directly from here, so +// just forward declare everything that we need from it. typedef const void *CFDataRef, *CFAllocatorRef, *CFPropertyListRef, - *CFStringRef, *CFDictionaryRef, *CFTypeRef, *CFErrorRef; + *CFStringRef, *CFDictionaryRef, *CFTypeRef, *CFErrorRef; #if __LLP64__ typedef unsigned long long CFTypeID; @@ -48,9 +46,9 @@ typedef _Bool Boolean; typedef CFIndex CFPropertyListFormat; typedef uint32_t CFStringEncoding; -/* kCFStringEncodingASCII analog. */ +// kCFStringEncodingASCII analog. #define CF_STRING_ENCODING_ASCII 0x0600 -/* kCFStringEncodingUTF8 analog. */ +// kCFStringEncodingUTF8 analog. #define CF_STRING_ENCODING_UTF8 0x08000100 #define CF_PROPERTY_LIST_IMMUTABLE 0 @@ -74,10 +72,10 @@ typedef Boolean (*CFStringGetCStringFuncTy)(CFStringRef, char *, CFIndex, CFStringEncoding); typedef void (*CFReleaseFuncTy)(CFTypeRef); -/* Find and parse the SystemVersion.plist file. */ +// Find and parse the SystemVersion.plist file. static void parseSystemVersionPList(void *Unused) { (void)Unused; - /* Load CoreFoundation dynamically */ + // Load CoreFoundation dynamically const void *NullAllocator = dlsym(RTLD_DEFAULT, "kCFAllocatorNull"); if (!NullAllocator) return; @@ -88,18 +86,18 @@ static void parseSystemVersionPList(void *Unused) { if (!CFDataCreateWithBytesNoCopyFunc) return; CFPropertyListCreateWithDataFuncTy CFPropertyListCreateWithDataFunc = - (CFPropertyListCreateWithDataFuncTy)dlsym( - RTLD_DEFAULT, "CFPropertyListCreateWithData"); -/* CFPropertyListCreateWithData was introduced only in macOS 10.6+, so it - * will be NULL on earlier OS versions. */ + (CFPropertyListCreateWithDataFuncTy)dlsym(RTLD_DEFAULT, + "CFPropertyListCreateWithData"); +// CFPropertyListCreateWithData was introduced only in macOS 10.6+, so it +// will be NULL on earlier OS versions. #pragma clang diagnostic push #pragma clang diagnostic ignored "-Wdeprecated-declarations" CFPropertyListCreateFromXMLDataFuncTy CFPropertyListCreateFromXMLDataFunc = (CFPropertyListCreateFromXMLDataFuncTy)dlsym( RTLD_DEFAULT, "CFPropertyListCreateFromXMLData"); #pragma clang diagnostic pop - /* CFPropertyListCreateFromXMLDataFunc is deprecated in macOS 10.10, so it - * might be NULL in future OS versions. */ + // CFPropertyListCreateFromXMLDataFunc is deprecated in macOS 10.10, so it + // might be NULL in future OS versions. if (!CFPropertyListCreateWithDataFunc && !CFPropertyListCreateFromXMLDataFunc) return; CFStringCreateWithCStringNoCopyFuncTy CFStringCreateWithCStringNoCopyFunc = @@ -143,7 +141,7 @@ static void parseSystemVersionPList(void *Unused) { if (!PropertyList) return; - /* Dynamically allocated stuff. */ + // Dynamically allocated stuff. CFDictionaryRef PListRef = NULL; CFDataRef FileContentsRef = NULL; UInt8 *PListBuf = NULL; @@ -162,8 +160,8 @@ static void parseSystemVersionPList(void *Unused) { if (NumRead != (size_t)PListFileSize) goto Fail; - /* Get the file buffer into CF's format. We pass in a null allocator here * - * because we free PListBuf ourselves */ + // Get the file buffer into CF's format. We pass in a null allocator here * + // because we free PListBuf ourselves FileContentsRef = (*CFDataCreateWithBytesNoCopyFunc)( NULL, PListBuf, (CFIndex)NumRead, AllocatorNull); if (!FileContentsRef) @@ -204,7 +202,7 @@ Fail: } int32_t __isOSVersionAtLeast(int32_t Major, int32_t Minor, int32_t Subminor) { - /* Populate the global version variables, if they haven't already. */ + // Populate the global version variables, if they haven't already. dispatch_once_f(&DispatchOnceCounter, NULL, parseSystemVersionPList); if (Major < GlobalMajor) @@ -220,7 +218,7 @@ int32_t __isOSVersionAtLeast(int32_t Major, int32_t Minor, int32_t Subminor) { #else -/* Silence an empty translation unit warning. */ +// Silence an empty translation unit warning. typedef int unused; #endif |