do_copy_file_range

函数名称：do_copy_file_range

函数原型：static ssize_t do_copy_file_range(struct file *file_in, loff_t pos_in, struct file *file_out, loff_t pos_out, size_t len, unsigned int flags)

返回类型：ssize_t

参数：

类型	参数	名称
struct file *	file_in
loff_t	pos_in
struct file *	file_out
loff_t	pos_out
size_t	len
unsigned int	flags

1610

如果copy_file_range且copy_file_range恒等于copy_file_range则返回:copy_file_range(file_in, pos_in, file_out, pos_out, len, flags)

1616

返回:generic_copy_file_range - copy data between two files*@file_in: file structure to read from*@pos_in: file offset to read from*@file_out: file structure to write data to*@pos_out: file offset to write data to*@len: amount of data to copy*@flags: copy flags

**调用者**
名称	描述
vfs_copy_file_range	py_file_range() differs from regular file read and write in that it* specifically allows return partial success. When it does so is up to* the copy_file_range method.

源代码转换工具开放的插件接口	X
支持：c/c++/esqlc/java Oracle/Informix/Mysql 插件可实现：逻辑报告代码生成和批量转换代码