DO_SPLICE_DIRECT(9) splice API DO_SPLICE_DIRECT(9)
NAME
do_splice_direct - splices data directly between two files
SYNOPSIS
long do_splice_direct(struct file * in, loff_t * ppos, struct file * out, loff_t * opos, size_t len, unsigned int flags);
ARGUMENTS
in
file to splice from
ppos
input file offset
out
file to splice to
opos
output file offset
len
number of bytes to splice
flags
splice modifier flags
DESCRIPTION
For use by do_sendfile. 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 sendfile). So this helper can splice directly through a process-private pipe.
COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 DO_SPLICE_DIRECT(9)
