py-lslock

Show list of files locked with flock syscall for a given directory(passed as argument to program) on Linux.

Overview

py-lslock uses /proc/locks file to read and determine which of files have been locked using flock. NOTE: /proc/locks is a feature in linux kernel so this utility must be run on linux based system.

Usage

Run the main program that list locks as following:

python py-lslock.py /tmp/lslock-test

Here /tmp/lslock-test is given as argument where .lock files are checked.

Test

To test, the test program must be run in separate shell. Run as :

python py-lslock-test.py /tmp/lslock-test 15

here 15 is number of iterations, i.e. # of lock operations performed in given subdirectory.
In other terminal run the main py-lslock.py to check the locked files in same directory.

python py-lslock.py /tmp/lslock-test

###Sample output

root@imran-ThinkPad-W530:/home/imran/Desktop/py-lslock# python py-lslock.py /tmp/lslock
result of all locked files found in directory /tmp/lslock 
LOCKED_FILE
/tmp/lslock/0.lock
/tmp/lslock/1.lock
/tmp/lslock/2.lock
/tmp/lslock/3.lock
/tmp/lslock/4.lock
/tmp/lslock/5.lock
/tmp/lslock/6.lock
/tmp/lslock/7.lock
/tmp/lslock/8.lock
/tmp/lslock/9.lock
/tmp/lslock/10.lock