Zero-copy: os.filecopy
File System is the operating system used to clear storage devices (commonly disk, but also based on NAND Flash SSDs) methods and data structures or files on a partition; method that is organized in a file on the storage device. Operating system software responsible for managing and storing file information agency called the document management system, referred to as the file system. File system consists of three parts: the interface of the file system, and the management operation object collection of software objects and attributes. From the point of view of the system, the file system is space for file storage and distribution equipment are organized, responsible for file storage and deposit file system protection and retrieval. In particular, it is responsible for the establishment of the user files, stored, read, modify, dump file, the file access control, undo file when the user no longer in use and the like.
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Author: leon1741
Source: CSDN
Original: https: //blog.csdn.net/LEON1741/article/details/78159754
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