Re: /dev/ttyS? dialin/dialout and modes.
In article <[🔎] 19970429180828.28062@wonderland.linux.it>,
Marco d'Itri <md@linux.it> wrote:
>On Apr 28, Miquel van Smoorenburg <miquels@cistron.nl> wrote:
>
> >No, you can't put uucp in the group dialout. I know what you mean; just
> >add uucp to the dialout group in /etc/group, right? But that only
> >works on login, because /bin/login calls initgroups() and youhave to
> >be root to do that.
>I can't reproduce this:
>
>marco@wonderland:3:~$id
>uid=1002(marco) gid=100(users) groups=100(users)
>marco@wonderland:3:~$su uucp
>uucp@wonderland:3:/home/marco$id
>uid=10(uucp) gid=10(uucp) groups=10(uucp),20(dialout)
>uucp@wonderland:3:/home/marco$exit
>exit
>marco@wonderland:3:~$su -l uucp
>uucp@wonderland:3:~$id
>uid=10(uucp) gid=10(uucp) groups=10(uucp),20(dialout)
>
>uucp::10:10:uucp:/var/spool/uucppublic:/bin/sh
>(Obviously I don't usually keep a passwordless user on my system :-) )
>
>dialout:*:20:md,uucp,ifmail
Ofcourse. I said you have to be root to be able to call initgroups().
Now how do you think "su" works? Hint:
-rwsr-xr-x 1 root wheel 24632 Mar 29 18:10 /bin/su
^ ^^^^
:)
Nonetheless I'm almost convinced the tty devices need not be owned by uucp.
Mike.
--
| Miquel van | "I need more space" "Well, why not move to Texas" |
| miquels@cistron.nl | "No, on my account, stupid." "Stupid? Uh-oh.." |
| PGP fingerprint: FE 66 52 4F CD 59 A5 36 7F 39 8B 20 F1 D6 74 02 |
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