06 CP command

Preface

ha-ha This command Should be linux Users Basically, I will use it ?

ha-ha Here we are mainly to glance at How does this command work

main Mainly parameter processing , Then entrust the core business to do_copy

do_copy Handle file / Folder Do different business logic processing , call copy.copy To copy a file , copy.copy_reg To copy ordinary files

copy_reg Deal with real file copies , Support all kinds of file copying  

sparse_copy The binary contents of the source file be based on buffer Copy to target file  

be based on linux-4.4.0 + coreutils-8.25

Debugging is command based "cp .version .version.bak"

main

Processing parameters , check , The business is entrusted to do_copy

do_copy 

file / Folder Treat separately by classification  

copy.copy_reg

copy.sparse_copy 

be based on buf Copy the contents of binary file  

End