+ long pagesize, pages;
+
+ pagesize = sysconf(_SC_PAGESIZE);
+ pages = sysconf(_SC_PHYS_PAGES);
+ if (pages == -1 || pagesize == -1)
+ return 0;
+
+ return (unsigned long long) pages * (unsigned long long) pagesize;
+}
+
+static inline unsigned long long get_fs_free_size(const char *path)
+{
+ unsigned long long ret;
+ struct statvfs s;
+
+ if (statvfs(path, &s) < 0)
+ return -1ULL;
+
+ ret = s.f_frsize;
+ ret *= (unsigned long long) s.f_bfree;
+ return ret;