do_splice_to

函数名称：Attempt to initiate a splice from a file to a pipe.

函数原型：static long do_splice_to(struct file *in, loff_t *ppos, struct pipe_inode_info *pipe, size_t len, unsigned int flags)

返回类型：long

参数：

类型	参数	名称
struct file *	in
loff_t *	ppos
struct pipe_inode_info *	pipe
size_t	len
unsigned int	flags

873

ssize_t( * splice_read)(struct file * , loff_t * , struct pipe_inode_info * , size_t, unsigned int)

877

如果此条件成立可能性小(为编译器优化)(!(f_mode & le is open for reading ))则返回:负EBADF

880

ret等于rw_verify_area(generic data direction definitions , in, ppos, len)

881

如果此条件成立可能性小(为编译器优化)(ret < 0)则返回:ret

884

如果此条件成立可能性小(为编译器优化)(len > MAX_RW_COUNT)则len等于MAX_RW_COUNT

887

如果splice_read则splice_read等于splice_read

889

否则splice_read等于default_file_splice_read

892

返回:splice_read(in, ppos, pipe, len, flags)

**调用者**
名称	描述
splice_direct_to_actor	splice_direct_to_actor - splices data directly between two non-pipes@in: file to splice from@sd: actor information on where to splice to@actor: handles the data splicing Description:* This is a special case helper to splice directly between two
do_splice	Determine where to splice to/from.

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