# HG changeset patch
# User Vadim Gelfer <vadim.gelfer@gmail.com>
# Date 1147101656 25200
# Node ID 6d3cc2a982f3e2b009894caf8f6ecf74aab60d45
# Parent  ec82cff7d2c4731f46a8ec5467d1136503bef0d2
add filename to IOError if read of file fails.
if file replaced with directory or symlink, IOError not fully filled out.


diff -r ec82cff7d2c4 -r 6d3cc2a982f3 mercurial/util.py
--- a/mercurial/util.py	Mon May 08 08:04:46 2006 -0700
+++ b/mercurial/util.py	Mon May 08 08:20:56 2006 -0700
@@ -687,7 +687,13 @@
         os.close(fd)
         fp = posixfile(temp, "wb")
         try:
-            fp.write(posixfile(name, "rb").read())
+            try:
+                s = posixfile(name, "rb").read()
+            except IOError, inst:
+                if not getattr(inst, 'filename', None):
+                    inst.filename = name
+                raise
+            fp.write(s)
         except:
             try: os.unlink(temp)
             except: pass