gpg: cannot open /dev/tty: Permission denied

[Matthias Urlichs]

Hi,

Randy Harmon:
> 
> In this case, I'm at the command line, and I can't
> see that it should go to /dev/tty for any reason.  Passphrase,
> key-confirmation or whatever should go to the controlling terminal (at least
> that's what I would expect).
> 
That's how one talks to the controlling terminal -- open /dev/tty and
read/write from there. You can't use stdin/out/err; they might be
redirected. Instead of playing games with isatty() and trying to write to
stdin (or read from stdout), gpg uses /dev/tty always. That makes sense,
IMHO.

> Lastly, why /dev/tty in the case where I try to encrypt to the single public
> key that happens to be on my keyring?
> 
I don't know. You can use truss or strace to find out what exactly gpg
writes to /dev/tty.

-- 
Matthias Urlichs  |  noris network GmbH   |   smurf@noris.de  |  ICQ: 20193661
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