Split handling of ENOTSOCK and ENODATA

Author: Bojan Nikolic

Lib/shutil.py

@@ -206,13 +206,16 @@ def _fastcopy_sendfile(fsrc, fdst):
             err.filename = fsrc.name
             err.filename2 = fdst.name
 
-            if err.errno in (errno.ENOTSOCK, errno.ENODATA):
+            if err.errno == errno.ENOTSOCK:
                 # ENOTSOCK: sendfile() on this platform (probably
                 # Linux < 2.6.33) does not support copies between
                 # regular files (only sockets).
-                #
-                # ENODATA: In rare cases, sendfile() on Linux Lustre
-                # returns ENODATA.
+                _USE_CP_SENDFILE = False
+                raise _GiveupOnFastCopy(err)
+
+            if err.errno == errno.ENODATA:
+                # In rare cases, sendfile() on Linux Lustre returns
+                # ENODATA.
                 _USE_CP_SENDFILE = False
 
                 dstpos = os.lseek(outfd, 0, os.SEEK_CUR)
@@ -224,7 +227,7 @@ def _fastcopy_sendfile(fsrc, fdst):
                     # back on POSIX read/write method
                     os.lseek(infd, dstpos, os.SEEK_SET)
 
-                raise _GiveupOnFastCopy(err)
+                raise _GiveupOnFastCopy(err)            
 
             if err.errno == errno.ENOSPC:  # filesystem is full
                 raise err from None