Take into account that only the kernel has direct access in most of the cases to the devices, and you should only use the calls provided in userspace to communicate with these devices. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of service , privacy policy and cookie policy , and that your continued use of the website is subject to these policies. With this i can use the tool with normal user. By using our site, you acknowledge that you have read and understand our Cookie Policy , Privacy Policy , and our Terms of Service. Now lets look what our systems think about this: Sign up using Email and Password. The following line was placed in a.

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Not quite as brain melting as I’d expected.

Sign up using Facebook. Braiam Code snippet added. I gave up running around trying to figure out some other means of doing it than udev rules, and instead just learned a bit about udev and wrote a flippin’ rule. I’m seeing stuff about udev rules and saw this on the net, but the world of udev is like a foreign land to me.

Udev rules actually seem pretty straightforward Post as a guest Name. So, what character special means? Take into account that only the kernel has direct access in most of the cases to the devices, and you should only use the calls provided in userspace to communicate with these devices. Running cat on the file as a normal user results in an insufficient permissions error, while running under su results in a successful albeit meaningless cat operation.

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Now lets look what our systems think about this:. I mean, they look like they can get ridiculous if you’re dealing with individual product IDs and whatnot, but they seem pretty damn tame for what they do. With this i can use the tool with normal user. kinux

Linux Kernel Driver DataBase: CONFIG_HIDRAW: /dev/hidraw raw HID device support

Ok, first of all, lets see what hidraw means and what is composed of: With myself added to the plugdev group, everything’s dandy. Sign up using Email hidrsw Password.

While I appreciate the extra info, it doesn’t actually help with my lack of permissions problem I’m seeing stuff about udev rules and saw this on the net, but the world of udev is like a foreign land to me, and if there’s some sort of hidrsw simpler solution where I just add myself to a group that’d be dandy Now lets look what our systems think about this: So, how this oinux your question?

Character special files or character devices relate to devices through which the system transmits data one character at a time by, for example, getchar.

The following line was placed in a.

H’okay, so, just some more information to clarify the issue: I’ve added a comment located where the relevant errno reading took place in GDB. This worked for me as i wanted to use Roccat configuration tool, and it needed root permissions.

Linux source code: samples/hidraw/hid-example.c (v) – Bootlin

I literally stepped through code that called the POSIX open method, and got the errno for insufficient permissions. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use hirraw the website is subject to these policies.

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By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

CONFIG_HIDRAW: /dev/hidraw raw HID device support

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Email Required, but never shown. This is meant as crudebut in the Linux ambiance it also means direct. A human interface device or HID is a type of computer device that interacts directly with, and most often takes input from, humans and may deliver output to humans. Also, I’m working with an experimental HID, so I’m totally okay with getting my brain full of hurts-so-good udev stuff it’s necessary.

I trust that this code is correct, as it has apparently been in use for quite some time now.