watch(8) does not work in jails

[Roland Smith]

On Mon, Aug 16, 2010 at 11:23:00AM +0200, David DEMELIER wrote:
> Hi,
> 
> I enabled `device snp' in my kernel config file and with this I can
> use the command watch(8) to see any tty device attached. For example :
> 
> # watch ttyv0
> 
> Give me the output of the console.
> 
> But in jails, it's not the same thing, I tried the following :
> 
> # jexec 1 tcsh
> # su -
> People# watch pts/0
> watch: fatal: cannot open snoop device
> 
> Is there a limitation of watch(8), or jails ?

Does /dev/pts/0 actually exist in the jail's devfs instance, and are its
permissions correct?

Roland
-- 
R.F.Smith                                   http://www.xs4all.nl/~rsmith/
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