Access grab state of evdev device












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I need to retrieved the grab state of an evdev device in a program. More specifically, I need to retrieve the state of the grab pointer in the evdev struct seen here: https://elixir.bootlin.com/linux/v4.20/source/drivers/input/evdev.c#L42 (if it is NULL or not NULL). Is this at all possible from userspace, e.g. through reading kernel memory with /dev/(k)mem or do I need to write a kernel module? Where should I get started?










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    I need to retrieved the grab state of an evdev device in a program. More specifically, I need to retrieve the state of the grab pointer in the evdev struct seen here: https://elixir.bootlin.com/linux/v4.20/source/drivers/input/evdev.c#L42 (if it is NULL or not NULL). Is this at all possible from userspace, e.g. through reading kernel memory with /dev/(k)mem or do I need to write a kernel module? Where should I get started?










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      I need to retrieved the grab state of an evdev device in a program. More specifically, I need to retrieve the state of the grab pointer in the evdev struct seen here: https://elixir.bootlin.com/linux/v4.20/source/drivers/input/evdev.c#L42 (if it is NULL or not NULL). Is this at all possible from userspace, e.g. through reading kernel memory with /dev/(k)mem or do I need to write a kernel module? Where should I get started?










      share|improve this question







      New contributor




      LeoTietz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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      I need to retrieved the grab state of an evdev device in a program. More specifically, I need to retrieve the state of the grab pointer in the evdev struct seen here: https://elixir.bootlin.com/linux/v4.20/source/drivers/input/evdev.c#L42 (if it is NULL or not NULL). Is this at all possible from userspace, e.g. through reading kernel memory with /dev/(k)mem or do I need to write a kernel module? Where should I get started?







      kernel memory kernel-modules devices input






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