Re: Dumping /dev/zero to the console

Matthias Urlichs (smurf@smurf.noris.de)
Mon, 22 Jul 1996 12:22:55 +0100

In linux.dev.kernel, article <199607191936.NAA28960@chopper.poohsticks.=
org>,
Drew Eckhardt <drew@poohsticks.org> writes:
> In message <199607182022.PAA10655@nixnet.qrp.com>, Nathan.Lewis@nixne=
t.qrp.com=20
> >Is there any reason /dev/zero should be readable by normal users,=20
>=20
> It is needed to map-in zero filled pages for the dynamic linker.

That was before God invented MAP_ANONYMOUS.

> Unless everything on your system is statically linked, changing=20
> its permissions would be a _very_ bad idea.

Assuming that you haven't updated your ld-linux.so recently.

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