Re: Hopefully a simple question on /proc/pid/mem

Alexander Viro
2001-04-30T19:26:18Z

On Mon, 30 Apr 2001, Benjamin C.R. LaHaise wrote:

> On Mon, 30 Apr 2001, Alexander Viro wrote:
>
> > I wonder what's wrong with reading from /proc/<pid>/mem, though - it's
> > using the same code as ptrace.
>
> We can actually do this cleanly now that we have proper page_dirty
> semantics for raw io. The original reason for disabling /proc/*/mem was
> that it left big gaping holes in the mm code in 2.0, and it hasn't been
> repaired since.

ITYM "disabling _write_ on /proc/*/mem". Read is OK. Anyway, current
mem_write() uses the same code as PTRACE_POKEDATA, so if the latter works,
the former also should be OK.