The Linux Kernel API
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devfs_register

Name

devfs_register --  Register a device entry.

Synopsis

devfs_handle_t devfs_register (devfs_handle_t dir, const char * name, unsigned int flags, unsigned int major, unsigned int minor, umode_t mode, void * ops, void * info);

Arguments

dir

The handle to the parent devfs directory entry. If this is NULL the new name is relative to the root of the devfs.

name

The name of the entry.

flags

A set of bitwise-ORed flags (DEVFS_FL_*).

major

The major number. Not needed for regular files.

minor

The minor number. Not needed for regular files.

mode

The default file mode.

ops

The &file_operations or &block_device_operations structure. This must not be externally deallocated.

info

An arbitrary pointer which will be written to the private_data field of the &file structure passed to the device driver. You can set this to whatever you like, and change it once the file is opened (the next file opened will not see this change).

Description

Returns a handle which may later be used in a call to devfs_unregister. On failure NULL is returned.

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