sftp_statvfs
sftp_statvfs(struct sftp_conn *conn, const char *path, struct sftp_statvfs *st,
struct sftp_statvfs *st, int quiet)
get_decode_statvfs(struct sftp_conn *conn, struct sftp_statvfs *st,
int sftp_statvfs(struct sftp_conn *, const char *, struct sftp_statvfs *, int);
struct sftp_statvfs st;
if (sftp_statvfs(conn, path, &st, 1) == -1)