#include struct statfs { uint64_t f_bsize; uint64_t f_frsize; uint64_t f_blocks; uint64_t f_bfree; uint64_t f_bavail; uint64_t f_files; uint64_t f_ffree; uint64_t f_favail; uint64_t f_fsid; uint64_t f_flag; uint64_t f_namemax; }; extern int statfs(const char *file, struct statfs *buf);