linux-master/fs/fcntl.c

540 static int get_compat_flock(struct flock *kfl, const struct compat_flock __user *ufl)
544 	if (copy_from_user(&fl, ufl, sizeof(struct compat_flock)))
550 static int get_compat_flock64(struct flock *kfl, const struct compat_flock64 __user *ufl)
554 	if (copy_from_user(&fl, ufl, sizeof(struct compat_flock64)))
560 static int put_compat_flock(const struct flock *kfl, struct compat_flock __user *ufl)
566 	if (copy_to_user(ufl, &fl, sizeof(struct compat_flock)))
571 static int put_compat_flock64(const struct flock *kfl, struct compat_flock64 __user *ufl)
575 	BUILD_BUG_ON(sizeof(kfl->l_start) > sizeof(ufl->l_start));
576 	BUILD_BUG_ON(sizeof(kfl->l_len) > sizeof(ufl->l_len));
580 	if (copy_to_user(ufl, &fl, sizeof(struct compat_flock64)))