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pushed non-atomic to option of last resort

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try to copy into place first
This commit is contained in:
Brian Coca 2016-02-15 12:08:07 -05:00
parent f6d2767ce9
commit bc41f46fec
1 changed files with 22 additions and 19 deletions
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41
lib/ansible/module_utils/basic.py
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@ -1737,24 +1737,7 @@ class AnsibleModule(object):
os.rename(src, dest) os.rename(src, dest)
except (IOError, OSError): except (IOError, OSError):
e = get_exception() e = get_exception()
# sadly there are some situations where we cannot ensure atomicity, but only if if e.errno not in [errno.EPERM, errno.EXDEV, errno.EACCES, errno.ETXTBSY]:
# the user insists and we get the appropriate error we update the file unsafely
if unsafe_writes and e.errno == errno.EBUSY:
#TODO: issue warning that this is an unsafe operation, but doing it cause user insists
try:
try:
out_dest = open(dest, 'wb')
in_src = open(src, 'rb')
shutil.copyfileobj(in_src, out_dest)
finally: # assuring closed files in 2.4 compatible way
if out_dest:
out_dest.close()
if in_src:
in_src.close()
except (shutil.Error, OSError, IOError):
e = get_exception()
self.fail_json(msg='Could not write data to file (%s) from (%s): %s' % (dest, src, e))
elif e.errno not in [errno.EPERM, errno.EXDEV, errno.EACCES, errno.ETXTBSY]:
# only try workarounds for errno 18 (cross device), 1 (not permitted), 13 (permission denied) # only try workarounds for errno 18 (cross device), 1 (not permitted), 13 (permission denied)
# and 26 (text file busy) which happens on vagrant synced folders and other 'exotic' non posix file systems # and 26 (text file busy) which happens on vagrant synced folders and other 'exotic' non posix file systems
self.fail_json(msg='Could not replace file: %s to %s: %s' % (src, dest, e)) self.fail_json(msg='Could not replace file: %s to %s: %s' % (src, dest, e))
@ -1789,8 +1772,28 @@ class AnsibleModule(object):
os.rename(tmp_dest.name, dest) os.rename(tmp_dest.name, dest)
except (shutil.Error, OSError, IOError): except (shutil.Error, OSError, IOError):
e = get_exception() e = get_exception()
# sadly there are some situations where we cannot ensure atomicity, but only if
# the user insists and we get the appropriate error we update the file unsafely
if unsafe_writes and e.errno == errno.EBUSY:
#TODO: issue warning that this is an unsafe operation, but doing it cause user insists
try:
try:
out_dest = open(dest, 'wb')
in_src = open(src, 'rb')
shutil.copyfileobj(in_src, out_dest)
finally: # assuring closed files in 2.4 compatible way
if out_dest:
out_dest.close()
if in_src:
in_src.close()
except (shutil.Error, OSError, IOError):
e = get_exception()
self.fail_json(msg='Could not write data to file (%s) from (%s): %s' % (dest, src, e))
else:
self.fail_json(msg='Could not replace file: %s to %s: %s' % (src, dest, e))
self.cleanup(tmp_dest.name) self.cleanup(tmp_dest.name)
self.fail_json(msg='Could not replace file: %s to %s: %s' % (src, dest, e))
if creating: if creating:
# make sure the file has the correct permissions # make sure the file has the correct permissions