'\" t
.\"     Title: do_splice_direct
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: splice API
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "DO_SPLICE_DIRECT" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "splice API"
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.SH "NAME"
do_splice_direct \- splices data directly between two files
.SH "SYNOPSIS"
.HP \w'long\ do_splice_direct('u
.BI "long do_splice_direct(struct\ file\ *\ " "in" ", loff_t\ *\ " "ppos" ", struct\ file\ *\ " "out" ", loff_t\ *\ " "opos" ", size_t\ " "len" ", unsigned\ int\ " "flags" ");"
.SH "ARGUMENTS"
.PP
\fIin\fR
.RS 4
file to splice from
.RE
.PP
\fIppos\fR
.RS 4
input file offset
.RE
.PP
\fIout\fR
.RS 4
file to splice to
.RE
.PP
\fIopos\fR
.RS 4
output file offset
.RE
.PP
\fIlen\fR
.RS 4
number of bytes to splice
.RE
.PP
\fIflags\fR
.RS 4
splice modifier flags
.RE
.SH "DESCRIPTION"
.PP
For use by
\fBdo_sendfile\fR\&. splice can easily emulate sendfile, but doing it in the application would incur an extra system call (splice in + splice out, as compared to just
\fBsendfile\fR)\&. So this helper can splice directly through a process\-private pipe\&.
.SH "COPYRIGHT"
.br