is file open in system ? - other than lsof

[Thomas Guettler]

bvidinli schrieb:
> is there a way to find out if file open in system ? -
> please write if you know a way  other than lsof. because lsof if slow for me.
> i need a faster way.
> i deal with thousands of files... so, i need a faster / python way for this.
> thanks.
> 
> 

On Linux there are symlinks from /proc/PID/fd to the open
files. You could use this:

#!/usr/bin/env python
import os
pids=os.listdir('/proc')
for pid in sorted(pids):
     try:
         int(pid)
     except ValueError:
         continue
     fd_dir=os.path.join('/proc', pid, 'fd')
     for file in os.listdir(fd_dir):
         try:
             link=os.readlink(os.path.join(fd_dir, file))
         except OSError:
             continue
         print pid, link


-- 
Thomas Guettler, http://www.thomas-guettler.de/
E-Mail: guettli (*) thomas-guettler + de