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
struct file * in
file to splice from
loff_t * ppos
input file offset
struct file * out
file to splice to
loff_t * opos
output file offset
size_t len
number of bytes to splice
unsigned int 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.