void para_fd_set(int fd, fd_set *fds, int *max_fileno);
__must_check int para_fgets(char *line, int size, FILE *f);
void *para_mmap(size_t length, int prot, int flags, int fd, off_t offset);
void para_fd_set(int fd, fd_set *fds, int *max_fileno);
__must_check int para_fgets(char *line, int size, FILE *f);
void *para_mmap(size_t length, int prot, int flags, int fd, off_t offset);