ioctl (Input Output ConTroL) is a system call for device-specific I/O operations and other operations which cannot be expressed by regular system calls and it provides an interface through which an application can communicate directly with a device driver(or any other global kernel space variables). Applications can use the standard control codes or device-specific control codes to perform direct input and output operations.
Questions tagged [ioctl]
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How can I save data to a device file?
I'm currently building a kernal module that creates a device under /dev and I want to store some data inside of the device file. However, every time I try to write to the device file, nothing is being saved to that specific file.
Currently, I've…
Harsh Patel
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