VFS Operation table

핵심개념

• Actual functions are implemented in filesystem modules.

• Operation table are populated when the VFS object is loaded or initialized

• Operations should be filesystem type dependent

Object Methods

• super_opeations object: contains the methods that the kernel can invoke on a specific file system, such as read_inode() and sync_fs().

• inode_operatins object: contains methods that the kernel can invoke on a specific file, such as create() and link().

• dentry_operations object: contain methods that the kernel can invoke on a specific directory entry, such as d_compare() and d_delete().

• file_operations objet: contain methods that a process can invoke on an open file, such as read() and write().