Date: Tue, 02 Aug 2011 21:07:31 -0700 From: freebsd@johnea.net To: freebsd-usb@freebsd.org Subject: Re: Access rights for specific USB device in /dev? (Was: Ippon UPS over USB (ugen1.2: <Cypress Semiconductor> at usbus1)?) Message-ID: <4E38C99B.8090304@johnea.net> In-Reply-To: <1896008072.20110803033103@serebryakov.spb.ru> References: <1523100399.20110803022059@serebryakov.spb.ru> <211179318.20110803023709@serebryakov.spb.ru> <1896008072.20110803033103@serebryakov.spb.ru>
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On 2011-08-02 16:30, Lev Serebryakov wrote: > Hello, Freebsd-usb. > You wrote 3 =EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF= =BD 2011 =EF=BF=BD., 2:37:09: > >> Now I have another question: devfs(8) uses device types or paths to= >> specify access rules for /dev/*, which is bad idea for USB device, as >> it will change path when cable will be re-attached to another port. Is= >> here any method to set owner:group of device node by VID/PID or ID >> string or something like this? > I've tried to add "attach" rule to devd.conf, but here is one > problem: $device-name is "ugen1.2" for example, and "devfs" change > owner and permissions on /dev/ugen1.2, but it is only "symbolic link" > and real device is "/dev/usb/1.2.0" in such case -- as result, owner > and permissions on real device stay unchanged and "blazer_usb" can not > access it again :( > Hi Lev, This has some info on permissions: http://people.freebsd.org/~thierry/nut_FreeBSD_HowTo.txt hth... johnea
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