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The explanation lies in the mount.fuse man page: Filesystems are mounted with nodev,nosuid by default, which can only be overridden by a privileged user With the nodev option, the kernel bans all access to devices in the mounted filesystem. With the nosuid option, the kernel ignores setuid and setgid attributes. Both options are necessary for security ...


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On systems with udev (that's more or less all for several years) every recognized device has an entry in /dev. These entries can be deleted, though. But (I guess) without a device file it is not possible for a userland process to access a device. Of course, for a device file to work it just needs the correct major and minor number. It doesn't matter what ...


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Not on Linux. Network communication in Linux is socket-based, having a device node would serve no purpose. Some other Unix flavours may have an entry in /dev for the interface (e.g. I know that SCO Unix did).


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Yes. The camera light will be on while the camera is in use. In this case, Motion is taking the feed and streaming it through the Motion web server. This happens whether or not people are connected to your stream. Assuming you're only using Motion I would edit the motion.conf in order to add authentication for the stream and also enable logging (to see ...


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udev? The best alternative is not to use it. And by learning how to not use it Linux and the *NIX world will begin to make more logical sense. The best long-term alternative is to use static devices (see note). If you've got the driver, the Linux kernel manages hot-plugging. I prefer not having udevd running, ever. dbus is another matter. It does slow ...


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You do not "see" any audio in /dev/hidraw0 because that control messages are handled over a different endpoint than audio messages. Control messages need reliable transmission while audio can get lost and typically uses isochronous transfers. Your test program results in errors because it tried to write a report of length 2. Here is the decoded HID report ...



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