Setting an exclusive lock on a file
Diez B. Roggisch
deets at nospam.web.de
Sun Mar 29 14:59:28 CEST 2009
Eugene Perederey schrieb:
> Hi all,
> I want to set an exclusive lock on a file so other processes wouldn't
> be able to write to it.
> So I write
> import fcntl
> fcntl.lockf(fd, fcntl.LOCK_EX)
> fd.write('some bytes')
> But it turns out that my script doesn't write anything to file whereas
> other processes do. What's wrong in my code?
Sorry, my other answer wasn't complete.
The "problem" with file-locking is that it's AFAIK cooperative. Just
because *you* lock a file doesn't mean anybody else is stopped from
I'm not sure if there is something else to overcome this.
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