# HG changeset patch
# User Franz Glasner <fzglas.hg@dom66.de>
# Date 1644352033 -3600
# Node ID b96d3585e8ced173aad281bcc94ce627745689e8
# Parent  ae5b31c10b41fd2b1d263d9d9f15e4611e133c92
Use more optimizes files flags if available: O_SEQUENTIAL and O_NOCTTY

diff -r ae5b31c10b41 -r b96d3585e8ce shasum.py
--- a/shasum.py	Tue Feb 08 20:31:25 2022 +0100
+++ b/shasum.py	Tue Feb 08 21:27:13 2022 +0100
@@ -461,11 +461,8 @@
 
     """
     h = hashobj()
-    flags = os.O_RDONLY
-    try:
-        flags |= os.O_BINARY
-    except AttributeError:
-        pass
+    flags = os.O_RDONLY | getattr(os, "O_BINARY", 0) \
+        | getattr(os, "O_SEQUENTIAL", 0) | getattr(os, "O_NOCTTY", 0)
     fd = os.open(filename, flags)
     try:
         st = os.fstat(fd)