diff options
Diffstat (limited to 'lib/Support/MemoryBuffer.cpp')
| -rw-r--r-- | lib/Support/MemoryBuffer.cpp | 27 |
1 files changed, 13 insertions, 14 deletions
diff --git a/lib/Support/MemoryBuffer.cpp b/lib/Support/MemoryBuffer.cpp index be1d9c7..051d64b 100644 --- a/lib/Support/MemoryBuffer.cpp +++ b/lib/Support/MemoryBuffer.cpp @@ -283,12 +283,11 @@ static bool shouldUseMmap(int FD, // FIXME: this chunk of code is duplicated, but it avoids a fstat when // RequiresNullTerminator = false and MapSize != -1. if (FileSize == size_t(-1)) { - struct stat FileInfo; - // TODO: This should use fstat64 when available. - if (fstat(FD, &FileInfo) == -1) { - return error_code(errno, posix_category()); - } - FileSize = FileInfo.st_size; + sys::fs::file_status Status; + error_code EC = sys::fs::status(FD, Status); + if (EC) + return EC; + FileSize = Status.getSize(); } // If we need a null terminator and the end of the map is inside the file, @@ -318,20 +317,20 @@ error_code MemoryBuffer::getOpenFile(int FD, const char *Filename, // If we don't know the file size, use fstat to find out. fstat on an open // file descriptor is cheaper than stat on a random path. if (FileSize == uint64_t(-1)) { - struct stat FileInfo; - // TODO: This should use fstat64 when available. - if (fstat(FD, &FileInfo) == -1) { - return error_code(errno, posix_category()); - } + sys::fs::file_status Status; + error_code EC = sys::fs::status(FD, Status); + if (EC) + return EC; // If this not a file or a block device (e.g. it's a named pipe // or character device), we can't trust the size. Create the memory // buffer by copying off the stream. - if (!S_ISREG(FileInfo.st_mode) && !S_ISBLK(FileInfo.st_mode)) { + sys::fs::file_type Type = Status.type(); + if (Type != sys::fs::file_type::regular_file && + Type != sys::fs::file_type::block_file) return getMemoryBufferForStream(FD, Filename, result); - } - FileSize = FileInfo.st_size; + FileSize = Status.getSize(); } MapSize = FileSize; } |