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authorSonny Rao <sonnyrao@chromium.org>2018-03-15 00:36:25 +0300
committerMichael S. Tsirkin <mst@redhat.com>2018-03-20 04:17:42 +0300
commitdc32bb678e103afbcfa4d814489af0566307f528 (patch)
treebb181af92c1f7e40734dad404339bdef4c480b7c /drivers/vhost/vsock.c
parent26b36604523f4a681a86e6cbc970ea72a2e9fb8a (diff)
downloadlinux-dc32bb678e103afbcfa4d814489af0566307f528.tar.xz
vhost: add vsock compat ioctl
This will allow usage of vsock from 32-bit binaries on a 64-bit kernel. Signed-off-by: Sonny Rao <sonnyrao@chromium.org> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/vhost/vsock.c')
-rw-r--r--drivers/vhost/vsock.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/vhost/vsock.c b/drivers/vhost/vsock.c
index 0d14e2ff19f1..ee0c385d9fe5 100644
--- a/drivers/vhost/vsock.c
+++ b/drivers/vhost/vsock.c
@@ -699,12 +699,23 @@ static long vhost_vsock_dev_ioctl(struct file *f, unsigned int ioctl,
}
}
+#ifdef CONFIG_COMPAT
+static long vhost_vsock_dev_compat_ioctl(struct file *f, unsigned int ioctl,
+ unsigned long arg)
+{
+ return vhost_vsock_dev_ioctl(f, ioctl, (unsigned long)compat_ptr(arg));
+}
+#endif
+
static const struct file_operations vhost_vsock_fops = {
.owner = THIS_MODULE,
.open = vhost_vsock_dev_open,
.release = vhost_vsock_dev_release,
.llseek = noop_llseek,
.unlocked_ioctl = vhost_vsock_dev_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = vhost_vsock_dev_compat_ioctl,
+#endif
};
static struct miscdevice vhost_vsock_misc = {