Commit 803a18ad authored by Kazuhiko Shiozaki's avatar Kazuhiko Shiozaki Committed by Xavier Thompson

[fix] Make buildout.rmtree working with symlink as a path argument

https://bugs.launchpad.net/zc.buildout/+bug/144228
parent 2c2c484b
...@@ -16,7 +16,6 @@ ...@@ -16,7 +16,6 @@
import shutil import shutil
import os import os
import doctest import doctest
import time
def rmtree (path): def rmtree (path):
""" """
...@@ -26,6 +25,8 @@ def rmtree (path): ...@@ -26,6 +25,8 @@ def rmtree (path):
process (e.g. antivirus scanner). This tries to chmod the process (e.g. antivirus scanner). This tries to chmod the
file to writeable and retries 10 times before giving up. file to writeable and retries 10 times before giving up.
Also it tries to remove symlink itself if a symlink as passed as
path argument.
>>> from tempfile import mkdtemp >>> from tempfile import mkdtemp
Let's make a directory ... Let's make a directory ...
...@@ -41,6 +42,8 @@ def rmtree (path): ...@@ -41,6 +42,8 @@ def rmtree (path):
>>> foo = os.path.join (d, 'foo') >>> foo = os.path.join (d, 'foo')
>>> with open (foo, 'w') as f: _ = f.write ('huhu') >>> with open (foo, 'w') as f: _ = f.write ('huhu')
>>> bar = os.path.join (d, 'bar')
>>> os.symlink(bar, bar)
and make it unwriteable and make it unwriteable
...@@ -52,21 +55,51 @@ def rmtree (path): ...@@ -52,21 +55,51 @@ def rmtree (path):
and now the directory is gone and now the directory is gone
>>> os.path.isdir (d)
0
Let's make a directory ...
>>> d = mkdtemp()
and make sure it is actually there
>>> os.path.isdir (d)
1
Now create a broken symlink ...
>>> foo = os.path.join (d, 'foo')
>>> os.symlink(foo + '.not_exist', foo)
rmtree should be able to remove it:
>>> rmtree (foo)
and now the directory is gone
>>> os.path.isdir (foo)
0
cleanup directory
>>> rmtree (d)
and now the directory is gone
>>> os.path.isdir (d) >>> os.path.isdir (d)
0 0
""" """
def retry_writeable (func, path, exc): def retry_writeable (func, path, exc):
os.chmod (path, 384) # 0600 if func is os.path.islink:
for i in range(10): os.unlink(path)
try: elif func is os.lstat or func is os.open:
func (path) if not os.path.islink(path):
break raise
except OSError: os.unlink(path)
time.sleep(0.1)
else: else:
# tried 10 times without success, thus os.chmod(path, 0o600)
# finally rethrow the last exception func(path)
raise
shutil.rmtree (path, onerror = retry_writeable) shutil.rmtree (path, onerror = retry_writeable)
......
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