Recent tty changes and snp
phk at phk.freebsd.dk
Sat Jun 12 07:15:10 GMT 2004
In message <20040611194808.GA55868 at dan.emsphone.com>, Dan Nelson writes:
>I think the snp device got left out of the recent struct tty changes; I
>get the following panic when running "watch -W /dev/sometty" and typing
>a character. Read-only watching a tty also causes a panic when I start
>typing on the real tty.
This is not intentional breakage, but it may be unavoidable breakage :-(
Snoop(4) is great functionality and I would have killed to have it
several times along my career, unfortunately its implementation is
I'm currently pondering using bpf(4) for the task instead, but the
uneven layering of the tty layer has not offered me a clearcut place
to stick the code yet.
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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