Messages in this thread | | | From | Andreas Schwab <> | Subject | Re: RFC: /dev/stdin, symlinks & permissions | Date | Tue, 18 Mar 2008 00:54:40 +0100 |
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Michael Tokarev <mjt@tls.msk.ru> writes:
> # ls -l /dev/pts/0 > crw--w---- 1 root tty 136, 0 Mar 18 02:19 /dev/pts/0 > > So far so good. Now, I change uid to something else, -- > doing su(8) to "mjt". /proc/self changed obviously, > but stdin &Co is still here, and points to the same > /dev/pts/0. But *its* permissions/ownership did not > change! So now I can't, for example, > > $ echo x > /dev/stdout > bash: /dev/stdout: Permission denied > > which is quite unexpected - I for one expect /dev/stdout > to work the way very similar to /dev/tty, to mean "current > standard output regardless of any permissions etc".
This has nothing to do with /dev/stdout. Your terminal simply does not allow access by anyone except user root or group tty. You need to open it up first, or mount /dev/pts with broader permissions (which is a bad idea however).
Andreas.
-- Andreas Schwab, SuSE Labs, schwab@suse.de SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany PGP key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 "And now for something completely different." -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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