Messages in this thread Patch in this message | | | Subject | [PATCH] vfio: Set container device mode | From | Alex Williamson <> | Date | Tue, 30 Apr 2013 16:21:24 -0600 |
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Minor 0 is the VFIO container device (/dev/vfio/vfio). On it's own the container does not provide a user with any privileged access. It only supports API version check and extension check ioctls. Only by attaching a VFIO group to the container does it gain any access. Set the mode of the container to allow access.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com> --- drivers/vfio/vfio.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c index ac7423b..acb7121 100644 --- a/drivers/vfio/vfio.c +++ b/drivers/vfio/vfio.c @@ -27,6 +27,7 @@ #include <linux/rwsem.h> #include <linux/sched.h> #include <linux/slab.h> +#include <linux/stat.h> #include <linux/string.h> #include <linux/uaccess.h> #include <linux/vfio.h> @@ -1359,6 +1360,9 @@ static const struct file_operations vfio_device_fops = { */ static char *vfio_devnode(struct device *dev, umode_t *mode) { + if (MINOR(dev->devt) == 0) + *mode = S_IRUGO | S_IWUGO; + return kasprintf(GFP_KERNEL, "vfio/%s", dev_name(dev)); }
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