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#1 (**permalink**) 02-21-2008, 10:31 AM

HOW-TO enable the ordinary user's access right to '/dev/rtc' ?

MPlayer seems to demand this and probably you do not want me to listen an
Internet radio as root?

this is an example outpu:

MPlayer 1.0pre7try2-3.3.6 (C) 2000-2005 MPlayer Team
CPU: Advanced Micro Devices Athlon MP/XP/XP-M Barton (Family: 6, Stepping:
0)
Detected cache-line size is 64 bytes
CPUflags: MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 0
Skompilowany dla procesora z rozszerzeniami: MMX MMX2 3DNow 3DNowEx SSE

Kodeki audio 85 i video 196
B³±d przy otwieraniu /dev/rtc: Permission denied (u¿ytkownik powinien móc go
odczytaæ.)
Odtwarzam http://67.43.161.248:80.
Resolving w3cache.icm.edu.pl for AF_INET...
Connecting to server w3cache.icm.edu.pl[193.219.28.146]:8080 ...
Name : Radio Free Colorado - Classic + Modern Rock Mix, 60's to today.
Best Hi-Fi Sound on the Net!

(...)

--
S

#2 (**permalink**) 02-21-2008, 10:31 AM

S wrote:
> HOW-TO enable the ordinary user's access right to '/dev/rtc' ?

First of all, check it exists.

--
Ben M.

#3 (**permalink**) 02-21-2008, 10:31 AM

Ben Measures wrote:
> First of all, check it exists.

yes, it exists. I have already set:
chmod 640 /dev/misc/rtc
and
chown root:users /dev/misc/rtc

and it seems ok for now
would you recommend this?

--
S

#4 (**permalink**) 02-21-2008, 10:31 AM

S wrote:

> Ben Measures wrote:
>> First of all, check it exists.
>
> yes, it exists. I have already set:
> chmod 640 /dev/misc/rtc
> and
> chown root:users /dev/misc/rtc
>
> and it seems ok for now
> would you recommend this?
>

It's usually owned by root:root and chmod 664. Although, if you are using
udev and RC_DEVICE_TARBALL is set to "no" in /etc/conf.d/rc, chown'ing and
chmod'ing it will be useless--as the settings are read directly
from /etc/udev/permissions.d/50-udev.permissions
and /etc/udev/rules.d/50-udev.rules when udev loads.

Stu

#5 (**permalink**) 02-21-2008, 10:31 AM

Stu <stu@santa-li.com> writes:

>S wrote:

>> Ben Measures wrote:
>>> First of all, check it exists.
>>
>> yes, it exists. I have already set:
>> chmod 640 /dev/misc/rtc

Why? Why not let users read it? And why would you want to write to it, even
as root?

>> and
>> chown root:users /dev/misc/rtc
>>
>> and it seems ok for now
>> would you recommend this?
>>

>It's usually owned by root:root and chmod 664. Although, if you are using
>udev and RC_DEVICE_TARBALL is set to "no" in /etc/conf.d/rc, chown'ing and
>chmod'ing it will be useless--as the settings are read directly
>from /etc/udev/permissions.d/50-udev.permissions
>and /etc/udev/rules.d/50-udev.rules when udev loads.

#6 (**permalink**) 02-21-2008, 10:32 AM

S wrote:

> yes, it exists. I have already set:
> chmod 640 /dev/misc/rtc
> and
> chown root:users /dev/misc/rtc

Well, then add yourself to the 'users' group

--
Pawel Kraszewski

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/dev/rtc: Permission denied :(