std::experimental::filesystem::space_info

From cppreference.com
< cpp‎ | experimental‎ | fs
Defined in header <experimental/filesystem>
struct space_info {

    uintmax_t capacity;
    uintmax_t free;
    uintmax_t available;

};
(filesystem TS)

available -- free space available to a non-privileged process

[edit] See also