Index: source/Host/common/File.cpp
===================================================================
--- source/Host/common/File.cpp
+++ source/Host/common/File.cpp
@@ -771,21 +771,34 @@
     int fd = GetDescriptor();
     if (fd != kInvalidDescriptor)
     {
-        ssize_t bytes_read = -1;
-        do
+        size_t bytes_left = num_bytes;
+        num_bytes = 0;
+        char *pos = (char*)buf;
+        while (bytes_left > 0)
         {
-            bytes_read = ::pread (fd, buf, num_bytes, offset);
-        } while (bytes_read < 0 && errno == EINTR);
+            ssize_t bytes_read = -1;
+            do
+            {
+                bytes_read = ::pread (fd, pos, bytes_left, offset);
+            } while (bytes_read < 0 && errno == EINTR);
 
-        if (bytes_read < 0)
-        {
-            num_bytes = 0;
-            error.SetErrorToErrno();
-        }
-        else
-        {
-            offset += bytes_read;
-            num_bytes = bytes_read;
+            if (bytes_read < 0)
+            {
+                num_bytes = 0;
+                error.SetErrorToErrno();
+                break;
+            }
+            else if (bytes_read == 0)
+            {
+                break;
+            }
+            else
+            {
+                offset += bytes_read;
+                num_bytes += bytes_read;
+                bytes_left -= bytes_read;
+                pos += bytes_read;
+            }
         }
     }
     else