login makes /dev/ttySx inaccessible to intended owners

Pilch (ucc02aa@sunmail.lrz-muenchen.de)
Wed, 24 Jan 1996 03:33:41 +0100


Suppose user ebruehl of group ebsh logged in to my system by modem.  
After logging out he will leave the modem device owner status changed:

<(dialog>

$ ls -l /dev/{modem,ttyS1}
lrwxrwxrwx   1 uucp	uucp            5 Aug 20 11:58 /dev/modem -> ttyS1
crw-rw----   1 ebruehl  ebsh       4,  65 Jan 23 12:38 /dev/ttyS1
crw-rw----   1 ebruehl  ebsh       4,  65 Jan 23 12:38 /dev/ttyS1

<)dialog>

I want these devices to be accessible to a special group of non-root
users, which is not the same as ebsh.  Now these users can no longer
send faxes, as soon as somebody logged in.
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