From d3778f9f6045bdbe6177ff100125555d3015beb1 Mon Sep 17 00:00:00 2001
From: Guido van Rossum <guido@python.org>
Date: Tue, 12 Nov 1991 15:37:40 +0000
Subject: Added samefile() function.

---
 Lib/posixpath.py | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/Lib/posixpath.py b/Lib/posixpath.py
index 456743c..7c13458 100644
--- a/Lib/posixpath.py
+++ b/Lib/posixpath.py
@@ -100,6 +100,34 @@ def islink(path):
 	return stat.S_ISLNK(st[stat.ST_MODE])
 
 
+# Are two filenames really pointing to the same file?
+#
+def samefile(f1, f2):
+	s1 = posix.stat(f1)
+	s2 = posix.stat(f2)
+	return samestat(s1, s2)
+
+
+# Are two open files really referencing the same file?
+# (Not necessarily the same file descriptor!)
+# XXX Oops, posix.fstat() doesn't exist yet!
+#
+def sameopenfile(fp1, fp2):
+	s1 = posix.fstat(fp1)
+	s2 = posix.fstat(fp2)
+	return samestat(s1, s2)
+
+
+# Are two stat buffers (obtained from stat, fstat or lstat)
+# describing the same file?
+#
+def samestat(s1, s2):
+	return s1[stat.ST_INO] = s2[stat.ST_INO] and \
+		s1[stat.ST_DEV] = s2[stat.STD_DEV]
+
+
+# Subroutine and global data used by ismount().
+
 _mounts = []
 
 def _getmounts():
-- 
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