usb /proc/file permissions control

[jack craig]

hi folks,

i just installed fc6, i got most stuff working, but am having a problem 
with
a local tool. i have a usb widget that i plug into the usb port and its 
recognized
and mounted. 

however!! during this process, early in the setup, a file is created in
/proc/bus/usb/00x/00y with permissions of 644.

i want these files created with 666 just for the devil of it... ;-)
i have been reading the udev controls, but that says its for
controlling what is in /dev, not what is in /proc/bus/usb/..

i am betting a nickel that someone on this list knows the way to control 
this file creation.

if you have any clues, pls share, tia, jackc...

-- 
Jack Craig

Build Team

Danger
3101 Park Ave.
Palo Alto, CA. 94306

Phone:     [phone]
SideKick:  650-283-9660
Email:     jcraig(a)danger.com
AIM:       dangerjackcraig

[Mikkel]

jack craig wrote:
>  hi folks,
>  
>  i just installed fc6, i got most stuff working, but am having a problem
>  with a local tool. i have a usb widget that i plug into the usb port and its
>  recognized and mounted.
>  however!! during this process, early in the setup, a file is created in
>  /proc/bus/usb/00x/00y with permissions of 644.
>  
>  i want these files created with 666 just for the devil of it... ;-)
>  i have been reading the udev controls, but that says its for
>  controlling what is in /dev, not what is in /proc/bus/usb/..
>  
>  i am betting a nickel that someone on this list knows the way to control
>  this file creation.
>  
>  if you have any clues, pls share, tia, jackc...
>   
I have not idea why you would want those file to be 666, but in any
case I do not think it is possible. If you are trying to control
access to your device, then you are probably going to be better off
controlling the permissions of the entry in the /sys file system for
your device.

Mikkel
-- 

  Do not meddle in the affairs of dragons,
for thou art crunchy and taste good with Ketchup!

[jack craig]

well, i am new here and i am not yet sure why the author wanted access 
to that file in any case,
i am trying to determine that also. today, i can work around this by doing a
chmod after the unit is plugged in, but that is hokey too...

thx for your time to reply, jackc...


Mikkel L. Ellertson wrote:
>  jack craig wrote:
>    
> > hi folks,
> >
> > i just installed fc6, i got most stuff working, but am having a problem
> > with a local tool. i have a usb widget that i plug into the usb port and its
> > recognized and mounted.
> > however!! during this process, early in the setup, a file is created in
> > /proc/bus/usb/00x/00y with permissions of 644.
> >
> > i want these files created with 666 just for the devil of it... ;-)
> > i have been reading the udev controls, but that says its for
> > controlling what is in /dev, not what is in /proc/bus/usb/..
> >
> > i am betting a nickel that someone on this list knows the way to control
> > this file creation.
> >
> > if you have any clues, pls share, tia, jackc...
> >
> >     
>  I have not idea why you would want those file to be 666, but in any
>  case I do not think it is possible. If you are trying to control
>  access to your device, then you are probably going to be better off
>  controlling the permissions of the entry in the /sys file system for
>  your device.
>
>  Mikkel
>     
-- 
Jack Craig

Build Team

Danger
3101 Park Ave.
Palo Alto, CA. 94306

Phone:     [phone]
SideKick:  650-283-9660
Email:     jcraig(a)danger.com
AIM:       dangerjackcraig

[Matthew Flaschen]

jack craig wrote:

>  i want these files created with 666 just for the devil of it... ;-)
A better approach is to give access to a group, then add yourself to the
group.  For example, I use the following code in a udev file
(/etc/udev/rules.d/60-cell.rules):

SUBSYSTEM!="usb_device", ACTION!="add",
GOTO="cell_rules_end"
# LG Phone
SYSFS{idVendor}=="1004", SYSFS{idProduct}=="6000",
GROUP="cellusers",
MODE="0660"
LABEL="cell_rules_end"

Of course, you'll need to find the idVendor and idProduct or other
identifying characteristics of the device (and change the names to make
them more appropriate).

Then, add yourself to the cell (or whatever) group.

Matt Flaschen

[jack craig]

sweet! i think this is just what i am looking for!!! thx VERY Much!!

Matthew Flaschen wrote:
>  jack craig wrote:
>
>    
> > i want these files created with 666 just for the devil of it... ;-)
> >     
>
>  A better approach is to give access to a group, then add yourself to the
>  group.  For example, I use the following code in a udev file
>  (/etc/udev/rules.d/60-cell.rules):
>
>  SUBSYSTEM!="usb_device", ACTION!="add",
> GOTO="cell_rules_end"
>  # LG Phone
>  SYSFS{idVendor}=="1004", SYSFS{idProduct}=="6000",
> GROUP="cellusers",
>  MODE="0660"
>  LABEL="cell_rules_end"
>
>  Of course, you'll need to find the idVendor and idProduct or other
>  identifying characteristics of the device (and change the names to make
>  them more appropriate).
>
>  Then, add yourself to the cell (or whatever) group.
>
>  Matt Flaschen
>
>     
-- 
Jack Craig

Build Team

Danger
3101 Park Ave.
Palo Alto, CA. 94306

Phone:     [phone]
SideKick:  650-283-9660
Email:     jcraig(a)danger.com
AIM:       dangerjackcraig

[jack craig]

hi matthew,

one question on the below?

Matthew Flaschen wrote:
>  jack craig wrote:
>
>    
> > i want these files created with 666 just for the devil of it... ;-)
> >     
>
>  A better approach is to give access to a group, then add yourself to the
>  group.  For example, I use the following code in a udev file
>  (/etc/udev/rules.d/60-cell.rules):
>
>  SUBSYSTEM!="usb_device", ACTION!="add",
> GOTO="cell_rules_end"
>  # LG Phone
>  SYSFS{idVendor}=="1004", SYSFS{idProduct}=="6000",
> GROUP="cellusers",
>  MODE="0660"
>  LABEL="cell_rules_end"
>
>  Of course, you'll need to find the idVendor and idProduct or other
>  identifying characteristics of the device (and change the names to make
>  them more appropriate).
>
>  Then, add yourself to the cell (or whatever) group.
>     
what is the details of this group addition?  this isnt the same group as 
/etc/group is it?

i have created a file for my hiptop as ...
# pass all events to the hiptop access 
SUBSYSTEM!="usb_hiptop", ACTION!="add",
GOTO="hiptop_rules_end"
# Hiptop/sidekick
SYSFS{idVendor}=="0da0", SYSFS{idProduct}=="1002",
GROUP="hiptopusers", 
MODE="0666"
LABEL="hiptop_rules_end"

and need next the where/how to create and join the group.  tia, jackc...


>  Matt Flaschen
>
>     
-- 
Jack Craig

Build Team

Danger
3101 Park Ave.
Palo Alto, CA. 94306

Phone:     [phone]
SideKick:  650-283-9660
Email:     jcraig(a)danger.com
AIM:       dangerjackcraig

[Matthew Flaschen]

jack craig wrote:
>  hi matthew,
>  
>  one question on the below?
>  
>  Matthew Flaschen wrote:
> > jack craig wrote:
> >
> >  
> >> i want these files created with 666 just for the devil of it... ;-)
> >>     
> >
> > A better approach is to give access to a group, then add yourself to the
> > group.  For example, I use the following code in a udev file
> > (/etc/udev/rules.d/60-cell.rules):
> >
> > SUBSYSTEM!="usb_device", ACTION!="add",
> GOTO="cell_rules_end"
> > # LG Phone
> > SYSFS{idVendor}=="1004", SYSFS{idProduct}=="6000",
> GROUP="cellusers",
> > MODE="0660"
> > LABEL="cell_rules_end"
> >
> > Of course, you'll need to find the idVendor and idProduct or other
> > identifying characteristics of the device (and change the names to make
> > them more appropriate).
> >
> > Then, add yourself to the cell (or whatever) group.
> >   
>  what is the details of this group addition?  this isnt the same group as
>  /etc/group is it?
>  
>  i have created a file for my hiptop as ...
>  # pass all events to the hiptop access SUBSYSTEM!="usb_hiptop",
>  ACTION!="add", GOTO="hiptop_rules_end"
>  # Hiptop/sidekick 
No, the first line should be (uncommented):

SUBSYSTEM!="usb_device", ACTION!="add",
GOTO="hiptop_rules_end"

>  SYSFS{idVendor}=="0da0",
> SYSFS{idProduct}=="1002", GROUP="hiptopusers",
>  MODE="0666" 
Use 0660.

>  and need next the where/how to create and join the group.  tia,
> jackc... 
$ groups jack

This is just to make sure you don't forget your groups if something goes
wrong.

# groupadd hiptopusers

Creates the group

# usermod -a -G hiptopusers jack

Adds jack to the hiptopusers group

Then, restart the computer.

Let me know how it goes.

Matt Flaschen

[jack craig]

great, thx!  i have to go back to atlanta next week, so my results may 
lag, but
rest assured, i will pursue this path.

thx SO much for this insight, i was beginning to think there were no 
guru's on this list! :-P

Matthew Flaschen wrote:
>  jack craig wrote:
>    
> > hi matthew,
> >
> > one question on the below?
> >
> > Matthew Flaschen wrote:
> >     
> >> jack craig wrote:
> >>
> >>  
> >>       
> >>> i want these files created with 666 just for the devil of it... ;-)
> >>>     
> >>>         
> >> A better approach is to give access to a group, then add yourself to the
> >> group.  For example, I use the following code in a udev file
> >> (/etc/udev/rules.d/60-cell.rules):
> >>
> >> SUBSYSTEM!="usb_device", ACTION!="add",
> GOTO="cell_rules_end"
> >> # LG Phone
> >> SYSFS{idVendor}=="1004", SYSFS{idProduct}=="6000",
> GROUP="cellusers",
> >> MODE="0660"
> >> LABEL="cell_rules_end"
> >>
> >> Of course, you'll need to find the idVendor and idProduct or other
> >> identifying characteristics of the device (and change the names to make
> >> them more appropriate).
> >>
> >> Then, add yourself to the cell (or whatever) group.
> >>   
> >>       
> > what is the details of this group addition?  this isnt the same group as
> > /etc/group is it?
> >
> > i have created a file for my hiptop as ...
> > # pass all events to the hiptop access SUBSYSTEM!="usb_hiptop",
> > ACTION!="add", GOTO="hiptop_rules_end"
> > # Hiptop/sidekick
> >     
>
>  No, the first line should be (uncommented):
>
>  SUBSYSTEM!="usb_device", ACTION!="add",
> GOTO="hiptop_rules_end"
>
>    
> > SYSFS{idVendor}=="0da0", SYSFS{idProduct}=="1002",
> GROUP="hiptopusers",
> > MODE="0666"
> >     
>
>  Use 0660.
>
>    
> > and need next the where/how to create and join the group.  tia, jackc...
> >     
>
>  $ groups jack
>
>  This is just to make sure you don't forget your groups if something goes
>  wrong.
>
>  # groupadd hiptopusers
>
>  Creates the group
>
>  # usermod -a -G hiptopusers jack
>
>  Adds jack to the hiptopusers group
>
>  Then, restart the computer.
>
>  Let me know how it goes.
>
>  Matt Flaschen
>
>     
-- 
Jack Craig

Build Team

Danger
3101 Park Ave.
Palo Alto, CA. 94306

Phone:     [phone]
SideKick:  650-283-9660
Email:     jcraig(a)danger.com
AIM:       dangerjackcraig