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SubjectRe: sed not working on /proc files


On Tue, 4 May 1999, Alan Cox wrote:

> > > Well, this breaks every program that uses libc file accesses.
> > So fix the buggy libc. Relying on mmap() being available is broken
>
> To save a thousand follow ups - the glibc code does do the right thing but
> the kernel thinks any 0 length mmap succeeds and doesnt error it. So its

Does the 0 length mmap take any resources? Could be good for a DoS if it
does

Chris


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