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[Bug #220993; may also fix bug #479469] Fix flakiness when old

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installations are present, by always unlinking the destination file
  before copying to it.  Without the unlink(), the copied file remains
  owned by its previous UID, causing the subsequent chmod() to fail.

Bugfix candidate, though it may cause changes on platforms where
  file ownership behaves differently.
This commit is contained in:
Andrew M. Kuchling 2002-02-01 18:29:34 +00:00
parent 8cb6540652
commit 3b388ec8b3
1 changed files with 7 additions and 0 deletions
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7
Lib/distutils/file_util.py
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@ -36,6 +36,13 @@ def _copy_file_contents (src, dst, buffer_size=16*1024):
raise DistutilsFileError, \
"could not open '%s': %s" % (src, errstr)
if os.path.exists(dst):
try:
os.unlink(dst)
except os.error, (errno, errstr):
raise DistutilsFileError, \
"could not delete '%s': %s" % (dst, errstr)
try:
fdst = open(dst, 'wb')
except os.error, (errno, errstr):