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random: wire up fops->splice_{read,write}_iter()

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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>
This commit is contained in:
Jens Axboe 2022-05-19 17:31:37 -06:00 committed by Greg Kroah-Hartman
parent 35db2a0731
commit 2177cef53e
1 changed files with 4 additions and 0 deletions
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4
drivers/char/random.c
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@ -1382,6 +1382,8 @@ const struct file_operations random_fops = {
.compat_ioctl = compat_ptr_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 = {
@ -1391,6 +1393,8 @@ const struct file_operations urandom_fops = {
.compat_ioctl = compat_ptr_ioctl,
.fasync = random_fasync,
.llseek = noop_llseek,
.splice_read = generic_file_splice_read,
.splice_write = iter_file_splice_write,
};