amprolla

devuan's apt repo merger
git clone https://git.parazyd.org/amprolla
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lock.py (607B)

      1 # See LICENSE file for copyright and license details.
      2 
      3 """
      4 Lockfile functions
      5 """
      6 
      7 from time import time
      8 from os import remove
      9 from os.path import isfile
     10 import sys
     11 
     12 from lib.config import lockpath
     13 from lib.log import info
     14 
     15 
     16 def check_lock():
     17     """
     18     Checks if a lockfile is active, and creates one if not.
     19     """
     20     if isfile(lockpath):
     21         info('Lockfile found. Defering operation.')
     22         sys.exit(1)
     23 
     24     with open(lockpath, 'w') as lock:
     25         lock.write(str(int(time())))
     26 
     27 
     28 def free_lock():
     29     """
     30     Frees an active lockfile.
     31     """
     32     if isfile(lockpath):
     33         remove(lockpath)