do_splice_direct (9) - Linux Manuals

do_splice_direct: splices data directly between two files

Command to display do_splice_direct manual in Linux: $ man 9 do_splice_direct

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

: 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.