[llvm] r175549 - Whitelist files and block devices instead of blacklisting fifos and

[Dan Gohman]

Author: djg
Date: Tue Feb 19 13:36:55 2013
New Revision: 175549

URL: http://llvm.org/viewvc/llvm-project?rev=175549&view=rev
Log:
Whitelist files and block devices instead of blacklisting fifos and
character devices.

Modified:
    llvm/trunk/lib/Support/MemoryBuffer.cpp

Modified: llvm/trunk/lib/Support/MemoryBuffer.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Support/MemoryBuffer.cpp?rev=175549&r1=175548&r2=175549&view=diff
==============================================================================
--- llvm/trunk/lib/Support/MemoryBuffer.cpp (original)
+++ llvm/trunk/lib/Support/MemoryBuffer.cpp Tue Feb 19 13:36:55 2013
@@ -322,9 +322,10 @@ error_code MemoryBuffer::getOpenFile(int
         return error_code(errno, posix_category());
       }
 
-      // If this is a named pipe or character device, we can't trust the size.
-      // Create the memory buffer by copying off the stream.
-      if (S_ISFIFO(FileInfo.st_mode) || S_ISCHR(FileInfo.st_mode)) {
+      // 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)) {
         return getMemoryBufferForStream(FD, Filename, result);
       }