[PATCH 16/19] nitro_enclaves: Let 32-bit processes use the ioctl interface

[Alexander Graf]

A 32-bit process on a 64-bit kernel gets -ENOTTY for every NE ioctl,
because neither the misc device nor an enclave fd sets .compat_ioctl.
The ioctl arguments don't require translation, so just add the default
compat_ioctl pointer to them and hence enable 32bit user space to drive
the device as well.

Fixes: 38907e124088 ("nitro_enclaves: Add logic for creating an enclave VM")
Signed-off-by: Alexander Graf <graf@xxxxxxxxxx>
---
 drivers/virt/nitro_enclaves/ne_misc_dev.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/virt/nitro_enclaves/ne_misc_dev.c b/drivers/virt/nitro_enclaves/ne_misc_dev.c
index f8b066c990ce1..355eb0a684ec2 100644
--- a/drivers/virt/nitro_enclaves/ne_misc_dev.c
+++ b/drivers/virt/nitro_enclaves/ne_misc_dev.c
@@ -68,6 +68,7 @@ static const struct file_operations ne_fops = {
 	.owner		= THIS_MODULE,
 	.llseek		= noop_llseek,
 	.unlocked_ioctl	= ne_ioctl,
+	.compat_ioctl	= compat_ptr_ioctl,
 };
 
 static struct miscdevice ne_misc_dev = {
@@ -1762,6 +1763,7 @@ static const struct file_operations ne_enclave_fops = {
 	.llseek		= noop_llseek,
 	.poll		= ne_enclave_poll,
 	.unlocked_ioctl	= ne_enclave_ioctl,
+	.compat_ioctl	= compat_ptr_ioctl,
 	.release	= ne_enclave_release,
 };
 
-- 
2.47.1