Subject: Re: Strange "tail" problem
To: J.T. Conklin <email@example.com>
From: Richard Tobin <firstname.lastname@example.org>
Date: 11/23/1994 14:16:13
> I've finally had time to look at this. It seems that tail uses mmap, but
> never calls munmap. When you execute the second tail, it grabs the same
> mmap'd region, which has not been updated with the new data.
> Adding appropriate munmap()'s seems to fix the problem.
Does this mean that any arbitrary user program that mmap()s a file can
prevent tail from working on it?