From: Jens Axboe axboe@kernel.dk
commit 79025e727a846be6fd215ae9cdb654368ac3f9a6 upstream.
Now that random/urandom is using {read,write}_iter, we can wire it up to using the generic splice handlers.
Fixes: 36e2c7421f02 ("fs: don't allow splice read/write without explicit ops") Signed-off-by: Jens Axboe axboe@kernel.dk [Jason: added the splice_write path. Note that sendfile() and such still does not work for read, though it does for write, because of a file type restriction in splice_direct_to_actor(), which I'll address separately.] Cc: Al Viro viro@zeniv.linux.org.uk Signed-off-by: Jason A. Donenfeld Jason@zx2c4.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/char/random.c | 4 ++++ 1 file changed, 4 insertions(+)
--- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -1382,6 +1382,8 @@ const struct file_operations random_fops .unlocked_ioctl = random_ioctl, .fasync = random_fasync, .llseek = noop_llseek, + .splice_read = generic_file_splice_read, + .splice_write = iter_file_splice_write, };
const struct file_operations urandom_fops = { @@ -1390,6 +1392,8 @@ const struct file_operations urandom_fop .unlocked_ioctl = random_ioctl, .fasync = random_fasync, .llseek = noop_llseek, + .splice_read = generic_file_splice_read, + .splice_write = iter_file_splice_write, };