dyld3/ClosureFileSystemPhysical.h

   1 /*
   2  * Copyright (c) 2017 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_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. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 #ifndef ClosureFileSystemPhysical_h
  25 #define ClosureFileSystemPhysical_h
  26
  27 #include "ClosureFileSystem.h"
  28
  29 #include <sys/stat.h>
  30
  31 namespace dyld3 {
  32 namespace closure {
  33
  34 #pragma clang diagnostic push
  35 #pragma clang diagnostic ignored "-Wnon-virtual-dtor"
  36 class __attribute__((visibility("hidden"))) FileSystemPhysical : public FileSystem {
  37 public:
  38     FileSystemPhysical(const char* rootPath=nullptr, const char* overlayPath=nullptr, bool allowRelativePaths=true)
  39             : FileSystem(), _rootPath(rootPath), _overlayPath(overlayPath), _allowRelativePaths(allowRelativePaths)
  40             { }
  41
  42     bool getRealPath(const char possiblePath[MAXPATHLEN], char realPath[MAXPATHLEN]) const override;
  43
  44     bool loadFile(const char* path, LoadedFileInfo& info, char realerPath[MAXPATHLEN], void (^error)(const char* format, ...)) const override;
  45
  46     void unloadFile(const LoadedFileInfo& info) const override;
  47
  48     void unloadPartialFile(LoadedFileInfo& info, uint64_t keepStartOffset, uint64_t keepLength) const override;
  49
  50     bool fileExists(const char* path, uint64_t* inode=nullptr, uint64_t* mtime=nullptr,
  51                     bool* issetuid=nullptr, bool* inodesMatchRuntime = nullptr) const override;
  52
  53 private:
  54
  55     void forEachPath(const char* path, void (^handler)(const char* fullPath, unsigned prefixLen, bool& stop)) const;
  56
  57     const char* _rootPath;
  58     const char* _overlayPath;
  59     bool        _allowRelativePaths;
  60 };
  61 #pragma clang diagnostic pop
  62
  63 } //  namespace closure
  64 } //  namespace dyld3
  65
  66 #endif /* ClosureFileSystemPhysical_h */