File

File structure. More...

Collaboration diagram for File:

Data Structures
struct	file
	Opened file description. More...
struct	file_operations
	Operations that can be performed on an opened file. More...

Functions
static struct file *	file_get (struct file *file)
	Increment an open file description's reference count. More...
static void	file_put (struct file *file)
	Decrement an open file description's reference count. More...
struct file *	file_open (struct vnode *, const struct file_operations *)
	Create a new file structure.
off_t	default_file_seek (struct file *file, off_t off, int whence)
	Reposition the open file description offset. More...
static void	file_close (struct file *file)
	Free a file struct and release its content.
void	file_accessed (struct file *file)
	Update the file's vnode's last access time.
void	file_modified (struct file *file)
	Update the file's vnode's last modification time.

Detailed Description

Function Documentation

default_file_seek()

off_t default_file_seek	(	struct file *	file,
		off_t	off,
		int	whence
	)

This is the default implementation for file_operations::seek(). It simply increments the description's offset.

file_get()

static struct file * file_get ( struct file *  file )

inlinestatic

Returns

The open file description.

file_put()

static void file_put ( struct file *  file )

inlinestatic

If this was the last reference to this open file description, the underlying structure is released.