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Ioctl

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Imbus 2026-02-24 13:49:54 +01:00
parent 04b82dab30
commit 0657191cf0
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ioctl_chardev/my-ioctl.h Normal file
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#ifndef MY_IOCTL_H
#define MY_IOCTL_H
#include <linux/ioctl.h>
/*
* Crucial point here, the kernel defines a set of macros for defining IOCTL numbers:
* _IO - No command
* _IOR - Read command
* _IOW - Write command
* _IORW - RW command
* _IOC - Basis of the others
* These macros encode the data type passed to the ioctl.
*/
#define MY_IOCTL_WIPE _IO('k', 0x01)
#define MY_IOCTL_FILL _IO('k', 0x02) /* Name is a placeholder, fills nothing */
#endif // MY-IOCTL_H