@ -1668,7 +1668,7 @@ class AnsibleModule(object):
e = get_exception ( )
sys . stderr . write ( " could not cleanup %s : %s " % ( tmpfile , e ) )
def atomic_move ( self , src , dest ):
def atomic_move ( self , src , dest , unsafe_writes = False ):
''' atomically move src to dest, copying attributes from dest, returns true on success
it uses os . rename to ensure this as it is an atomic operation , rest of the function is
to work around limitations , corner cases and ensure selinux context is saved if possible '''
@ -1708,9 +1708,25 @@ class AnsibleModule(object):
os . rename ( src , dest )
except ( IOError , OSError ) :
e = get_exception ( )
# 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
if e . errno not in [ errno . EPERM , errno . EXDEV , errno . EACCES , errno . ETXTBSY ] :
# 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 :
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)
# 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 ) )
dest_dir = os . path . dirname ( dest )