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Merge pull request #1038 from bcoca/atomic_copy2

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Atomic copy2
This commit is contained in:
Michael DeHaan 2012-09-14 15:53:49 -07:00
commit 7df0e5259f
1 changed files with 6 additions and 1 deletions
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7
library/copy
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@ -20,6 +20,7 @@
import os import os
import shutil import shutil
import time
def main(): def main():
@ -64,7 +65,11 @@ def main():
if backup: if backup:
if os.path.exists(dest): if os.path.exists(dest):
backup_file = module.backup_local(dest) backup_file = module.backup_local(dest)
shutil.copyfile(src, dest) #TODO:pid + epoch should avoid most collisions, hostname/mac for those using nfs?
# might be an issue with exceeding path length
dest_tmp = "%s.%s.%s.tmp" % (dest,os.getpid(),time.time())
shutil.copyfile(src, dest_tmp)
shutil.move(dest_tmp, dest)
except shutil.Error: except shutil.Error:
module.fail_json(msg="failed to copy: %s and %s are the same" % (src, dest)) module.fail_json(msg="failed to copy: %s and %s are the same" % (src, dest))
except IOError: except IOError: