Unverified Commit f8527a29 authored by Christian Brauner's avatar Christian Brauner
Browse files

nsfs: validate extensible ioctls 



Validate extensible ioctls stricter than we do now.

Reviewed-by: default avatarJan Kara <jack@suse.cz>
Signed-off-by: default avatarChristian Brauner <brauner@kernel.org>
parent 4d906371

fs/nsfs.c

+3 −1
Original line number Diff line number Diff line
@@ -169,9 +169,11 @@ static bool nsfs_ioctl_valid(unsigned int cmd) 
	/* Extensible ioctls require some extra handling. */

	switch (_IOC_NR(cmd)) {

	case _IOC_NR(NS_MNT_GET_INFO):

		return extensible_ioctl_valid(cmd, NS_MNT_GET_INFO, MNT_NS_INFO_SIZE_VER0);

	case _IOC_NR(NS_MNT_GET_NEXT):

		return extensible_ioctl_valid(cmd, NS_MNT_GET_NEXT, MNT_NS_INFO_SIZE_VER0);

	case _IOC_NR(NS_MNT_GET_PREV):

		return (_IOC_TYPE(cmd) == _IOC_TYPE(cmd));

		return extensible_ioctl_valid(cmd, NS_MNT_GET_PREV, MNT_NS_INFO_SIZE_VER0);

	}



	return false;