-error_code MemoryBuffer::getFile(const char *Filename,
- OwningPtr<MemoryBuffer> &result,
- int64_t FileSize,
- bool RequiresNullTerminator) {
- // FIXME: Review if this check is unnecessary on windows as well.
-#ifdef LLVM_ON_WIN32
- // First check that the "file" is not a directory
- bool is_dir = false;
- error_code err = sys::fs::is_directory(Filename, is_dir);
- if (err)
- return err;
- if (is_dir)
- return make_error_code(errc::is_a_directory);
-#endif
-
- int OpenFlags = O_RDONLY;
-#ifdef O_BINARY
- OpenFlags |= O_BINARY; // Open input file in binary mode on win32.
-#endif
- int FD = ::open(Filename, OpenFlags);
- if (FD == -1)
- return error_code(errno, posix_category());
-
- error_code ret = getOpenFile(FD, Filename, result, FileSize, FileSize,
- 0, RequiresNullTerminator);
+static ErrorOr<std::unique_ptr<MemoryBuffer>>
+getOpenFileImpl(int FD, const char *Filename, uint64_t FileSize,
+ uint64_t MapSize, int64_t Offset, bool RequiresNullTerminator,
+ bool IsVolatileSize);
+
+static ErrorOr<std::unique_ptr<MemoryBuffer>>
+getFileAux(const char *Filename, int64_t FileSize, bool RequiresNullTerminator,
+ bool IsVolatileSize) {
+ int FD;
+ std::error_code EC = sys::fs::openFileForRead(Filename, FD);
+ if (EC)
+ return EC;
+
+ ErrorOr<std::unique_ptr<MemoryBuffer>> Ret =
+ getOpenFileImpl(FD, Filename, FileSize, FileSize, 0,
+ RequiresNullTerminator, IsVolatileSize);