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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

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.

COPYRIGHT

July 2017 Kernel Hackers Manual 4.11