1 //===- FileSystem.h -------------------------------------------------------===//
2 //
3 //                     The MCLinker Project
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 // This file declares the mcld::sys::fs:: namespace. It follows TR2/boost
10 // filesystem (v3), but modified to remove exception handling and the
11 // path class.
12 //===----------------------------------------------------------------------===//
13 
14 #ifndef MCLD_SUPPORT_FILESYSTEM_H
15 #define MCLD_SUPPORT_FILESYSTEM_H
16 
17 #include "mcld/Support/PathCache.h"
18 #include <mcld/Config/Config.h>
19 #include <string>
20 #include <iosfwd>
21 #include <locale>
22 
23 namespace mcld {
24 namespace sys {
25 
26 namespace fs {
27 
28 enum FileType
29 {
30   StatusError,
31   StatusUnknown = StatusError,
32   FileNotFound,
33   RegularFile,
34   DirectoryFile,
35   SymlinkFile,
36   BlockFile,
37   CharacterFile,
38   FifoFile,
39   SocketFile,
40   ReparseFile,
41   TypeUnknown,
42   StatusKnown,
43   IsSymLink
44 };
45 
46 /** \class FileStatus
47  *  \brief FileStatus
48  */
49 class FileStatus
50 {
51 public:
FileStatus()52   FileStatus()
53     : m_Value(StatusError) {}
54 
FileStatus(FileType v)55   explicit FileStatus(FileType v)
56     : m_Value(v) {}
57 
setType(FileType v)58   void setType(FileType v)   { m_Value = v; }
type()59   FileType type() const   { return m_Value; }
60 
61 private:
62   FileType m_Value;
63 };
64 
65 inline bool operator==(const FileStatus& rhs, const FileStatus& lhs) {
66   return rhs.type() == lhs.type();
67 }
68 
69 inline bool operator!=(const FileStatus& rhs, const FileStatus& lhs ) {
70   return !(rhs == lhs);
71 }
72 
73 class Path;
74 class DirIterator;
75 class Directory;
76 
77 bool exists(const Path &pPath);
78 bool is_directory(const Path &pPath);
79 
80 namespace detail {
81 
82 extern Path::StringType static_library_extension;
83 extern Path::StringType shared_library_extension;
84 extern Path::StringType executable_extension;
85 extern Path::StringType relocatable_extension;
86 extern Path::StringType assembly_extension;
87 extern Path::StringType bitcode_extension;
88 
89 size_t canonicalize(Path::StringType& pPathName);
90 bool not_found_error(int perrno);
91 void status(const Path& p, FileStatus& pFileStatus);
92 void symlink_status(const Path& p, FileStatus& pFileStatus);
93 mcld::sys::fs::PathCache::entry_type* bring_one_into_cache(DirIterator& pIter);
94 void open_dir(Directory& pDir);
95 void close_dir(Directory& pDir);
96 void get_pwd(Path& pPWD);
97 
98 int open(const Path& pPath, int pOFlag);
99 int open(const Path& pPath, int pOFlag, int pPermission);
100 ssize_t pread(int pFD, void* pBuf, size_t pCount, off_t pOffset);
101 ssize_t pwrite(int pFD, const void* pBuf, size_t pCount, off_t pOffset);
102 int ftruncate(int pFD, size_t pLength);
103 void* mmap(void *pAddr, size_t pLen,
104            int pProt, int pFlags, int pFD, off_t pOffset);
105 int munmap(void *pAddr, size_t pLen);
106 
107 } // namespace of detail
108 } // namespace of fs
109 } // namespace of sys
110 } // namespace of mcld
111 
112 #endif
113 
114