Create device node in driver

Red Hat Enterprise Linux uses udev to create device nodes for you. There is always a device node that matches the device name that is used by the kernel, and additional nodes might be created by special udev rules. See the udev man page for more details.  · To dynamically create device nodes (which are in /dev) you should use udev or maybe mdev for embedded systems. In your char driver you could set the major number to 0 and this will mean the major number is dynamically allocated. mknod . name is the name of the device node that you want to create, type is either, c for character devices, and b for block. They each have a major number and a minor number which is used by the kernel to route file .

mknod . name is the name of the device node that you want to create, type is either, c for character devices, and b for block. They each have a major number and a minor number which is used by the kernel to route file requests to the appropriate device driver code. The node number on the special file connects it to a specific device driver in the Unix kernel. A device node is created with the command mknod. The device nodes are stored in or have links to the /dev directory. When the ls -l command is used to list these files, their major and minor numbers are displayed. The major number instructs the kernel to call the device specific code associated with the device, and the minor number is passed by the kernel to the device driver to further control. The driver that creates the PDO for a device node is called the bus driver for the node. If your point of reference is the PCI bus, then www.doorway.ru is the function driver. But if your point of reference is the Proseware Gizmo device, then www.doorway.ru is the bus driver.

name is the name of the device node that you want to create, type is either, c for character devices, and b for block. They each have a major number and a minor. Other device nodes are dynamically assigned to a device driver when Linux boots. When a device node is created, it is associated with a major and minor. To dynamically create device nodes (which are in /dev) you should use udev or maybe mdev for embedded systems. In your char driver you could set.