return 0;
}
EXPORT_SYMBOL(_uverbs_get_const);
+
+int uverbs_copy_to_struct_or_zero(const struct uverbs_attr_bundle *bundle,
+ size_t idx, const void *from, size_t size)
+{
+ const struct uverbs_attr *attr = uverbs_attr_get(bundle, idx);
+
+ if (clear_user(u64_to_user_ptr(attr->ptr_attr.data),
+ attr->ptr_attr.len))
+ return -EFAULT;
+ return uverbs_copy_to(bundle, idx, from, size);
+}
int _uverbs_get_const(s64 *to, const struct uverbs_attr_bundle *attrs_bundle,
size_t idx, s64 lower_bound, u64 upper_bound,
s64 *def_val);
+int uverbs_copy_to_struct_or_zero(const struct uverbs_attr_bundle *bundle,
+ size_t idx, const void *from, size_t size);
#else
static inline int
uverbs_get_flags64(u64 *to, const struct uverbs_attr_bundle *attrs_bundle,
{
return -EINVAL;
}
+static inline int
+uverbs_copy_to_struct_or_zero(const struct uverbs_attr_bundle *bundle,
+ size_t idx, const void *from, size_t size)
+{
+ return -EINVAL;
+}
#endif
#define uverbs_get_const(_to, _attrs_bundle, _idx) \