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    //! Apple (ios/darwin)-specific definitions
    //!
    //! This covers *-apple-* triples currently

    pub type c_char = i8;
    pub type clock_t = c_ulong;
    pub type time_t = c_long;
    pub type suseconds_t = i32;
    pub type dev_t = i32;
    pub type ino_t = u64;
    pub type mode_t = u16;
    pub type nlink_t = u16;
    pub type blksize_t = i32;
    pub type rlim_t = u64;
    pub type mach_timebase_info_data_t = mach_timebase_info;
    pub type pthread_key_t = c_ulong;
    pub type sigset_t = u32;
    pub type clockid_t = ::c_uint;
    pub type fsblkcnt_t = ::c_uint;
    pub type fsfilcnt_t = ::c_uint;
    pub type speed_t = ::c_ulong;
    pub type tcflag_t = ::c_ulong;
    pub type nl_item = ::c_int;
    pub type id_t = ::c_uint;
    pub type sem_t = ::c_int;
    pub type idtype_t = ::c_uint;
    pub type integer_t = ::c_int;
    pub type cpu_type_t = integer_t;
    pub type cpu_subtype_t = integer_t;
    pub type vm_prot_t = ::c_int;
    pub type posix_spawnattr_t = *mut ::c_void;
    pub type posix_spawn_file_actions_t = *mut ::c_void;
    pub type key_t = ::c_int;
    pub type shmatt_t = ::c_ushort;

    pub enum timezone {}

    s! {
        pub struct aiocb {
            pub aio_fildes: ::c_int,
            pub aio_offset: ::off_t,
            pub aio_buf: *mut ::c_void,
            pub aio_nbytes: ::size_t,
            pub aio_reqprio: ::c_int,
            pub aio_sigevent: sigevent,
            pub aio_lio_opcode: ::c_int
        }

        pub struct utmpx {
            pub ut_user: [::c_char; _UTX_USERSIZE],
            pub ut_id: [::c_char; _UTX_IDSIZE],
            pub ut_line: [::c_char; _UTX_LINESIZE],
            pub ut_pid: ::pid_t,
            pub ut_type: ::c_short,
            pub ut_tv: ::timeval,
            pub ut_host: [::c_char; _UTX_HOSTSIZE],
            ut_pad: [::uint32_t; 16],
        }

        pub struct glob_t {
            pub gl_pathc:  ::size_t,
            __unused1: ::c_int,
            pub gl_offs:   ::size_t,
            __unused2: ::c_int,
            pub gl_pathv:  *mut *mut ::c_char,

            __unused3: *mut ::c_void,

            __unused4: *mut ::c_void,
            __unused5: *mut ::c_void,
            __unused6: *mut ::c_void,
            __unused7: *mut ::c_void,
            __unused8: *mut ::c_void,
        }

        pub struct sockaddr_storage {
            pub ss_len: u8,
            pub ss_family: ::sa_family_t,
            __ss_pad1: [u8; 6],
            __ss_align: i64,
            __ss_pad2: [u8; 112],
        }

        pub struct addrinfo {
            pub ai_flags: ::c_int,
            pub ai_family: ::c_int,
            pub ai_socktype: ::c_int,
            pub ai_protocol: ::c_int,
            pub ai_addrlen: ::socklen_t,
            pub ai_canonname: *mut ::c_char,
            pub ai_addr: *mut ::sockaddr,
            pub ai_next: *mut addrinfo,
        }

        pub struct mach_timebase_info {
            pub numer: u32,
            pub denom: u32,
        }

        pub struct stat {
            pub st_dev: dev_t,
            pub st_mode: mode_t,
            pub st_nlink: nlink_t,
            pub st_ino: ino_t,
            pub st_uid: ::uid_t,
            pub st_gid: ::gid_t,
            pub st_rdev: dev_t,
            pub st_atime: time_t,
            pub st_atime_nsec: c_long,
            pub st_mtime: time_t,
            pub st_mtime_nsec: c_long,
            pub st_ctime: time_t,
            pub st_ctime_nsec: c_long,
            pub st_birthtime: time_t,
            pub st_birthtime_nsec: c_long,
            pub st_size: ::off_t,
            pub st_blocks: ::blkcnt_t,
            pub st_blksize: blksize_t,
            pub st_flags: ::uint32_t,
            pub st_gen: ::uint32_t,
            pub st_lspare: ::int32_t,
            pub st_qspare: [::int64_t; 2],
        }

        pub struct dirent {
            pub d_ino: u64,
            pub d_seekoff: u64,
            pub d_reclen: u16,
            pub d_namlen: u16,
            pub d_type: u8,
            pub d_name: [::c_char; 1024],
        }

        pub struct pthread_mutex_t {
            __sig: ::c_long,
            __opaque: [u8; __PTHREAD_MUTEX_SIZE__],
        }

        pub struct pthread_mutexattr_t {
            __sig: ::c_long,
            __opaque: [u8; 8],
        }

        pub struct pthread_cond_t {
            __sig: ::c_long,
            __opaque: [u8; __PTHREAD_COND_SIZE__],
        }

        pub struct pthread_condattr_t {
            __sig: ::c_long,
            __opaque: [u8; __PTHREAD_CONDATTR_SIZE__],
        }

        pub struct pthread_rwlock_t {
            __sig: ::c_long,
            __opaque: [u8; __PTHREAD_RWLOCK_SIZE__],
        }

        pub struct pthread_rwlockattr_t {
            __sig: ::c_long,
            __opaque: [u8; __PTHREAD_RWLOCKATTR_SIZE__],
        }

        pub struct siginfo_t {
            pub si_signo: ::c_int,
            pub si_errno: ::c_int,
            pub si_code: ::c_int,
            pub si_pid: ::pid_t,
            pub si_uid: ::uid_t,
            pub si_status: ::c_int,
            pub si_addr: *mut ::c_void,
            _pad: [usize; 9],
        }

        pub struct sigaction {
            pub sa_sigaction: ::sighandler_t,
            pub sa_mask: sigset_t,
            pub sa_flags: ::c_int,
        }

        pub struct stack_t {
            pub ss_sp: *mut ::c_void,
            pub ss_size: ::size_t,
            pub ss_flags: ::c_int,
        }

        pub struct fstore_t {
            pub fst_flags: ::c_uint,
            pub fst_posmode: ::c_int,
            pub fst_offset: ::off_t,
            pub fst_length: ::off_t,
            pub fst_bytesalloc: ::off_t,
        }

        pub struct radvisory {
            pub ra_offset: ::off_t,
            pub ra_count: ::c_int,
        }

        pub struct statvfs {
            pub f_bsize: ::c_ulong,
            pub f_frsize: ::c_ulong,
            pub f_blocks: ::fsblkcnt_t,
            pub f_bfree: ::fsblkcnt_t,
            pub f_bavail: ::fsblkcnt_t,
            pub f_files: ::fsfilcnt_t,
            pub f_ffree: ::fsfilcnt_t,
            pub f_favail: ::fsfilcnt_t,
            pub f_fsid: ::c_ulong,
            pub f_flag: ::c_ulong,
            pub f_namemax: ::c_ulong,
        }

        pub struct Dl_info {
            pub dli_fname: *const ::c_char,
            pub dli_fbase: *mut ::c_void,
            pub dli_sname: *const ::c_char,
            pub dli_saddr: *mut ::c_void,
        }

        pub struct sockaddr_in {
            pub sin_len: u8,
            pub sin_family: ::sa_family_t,
            pub sin_port: ::in_port_t,
            pub sin_addr: ::in_addr,
            pub sin_zero: [::c_char; 8],
        }

        pub struct statfs {
            pub f_bsize: ::uint32_t,
            pub f_iosize: ::int32_t,
            pub f_blocks: ::uint64_t,
            pub f_bfree: ::uint64_t,
            pub f_bavail: ::uint64_t,
            pub f_files: ::uint64_t,
            pub f_ffree: ::uint64_t,
            pub f_fsid: ::fsid_t,
            pub f_owner: ::uid_t,
            pub f_type: ::uint32_t,
            pub f_flags: ::uint32_t,
            pub f_fssubtype: ::uint32_t,
            pub f_fstypename: [::c_char; 16],
            pub f_mntonname: [::c_char; 1024],
            pub f_mntfromname: [::c_char; 1024],
            pub f_reserved: [::uint32_t; 8],
        }

        // FIXME: this should have align 4 but it's got align 8 on 64-bit
        pub struct kevent {
            pub ident: ::uintptr_t,
            pub filter: ::int16_t,
            pub flags: ::uint16_t,
            pub fflags: ::uint32_t,
            pub data: ::intptr_t,
            pub udata: *mut ::c_void,
        }

        pub struct kevent64_s {
            pub ident: ::uint64_t,
            pub filter: ::int16_t,
            pub flags: ::uint16_t,
            pub fflags: ::uint32_t,
            pub data: ::int64_t,
            pub udata: ::uint64_t,
            pub ext: [::uint64_t; 2],
        }

        pub struct dqblk {
            pub dqb_bhardlimit: ::uint64_t,
            pub dqb_bsoftlimit: ::uint64_t,
            pub dqb_curbytes: ::uint64_t,
            pub dqb_ihardlimit: ::uint32_t,
            pub dqb_isoftlimit: ::uint32_t,
            pub dqb_curinodes: ::uint32_t,
            pub dqb_btime: ::uint32_t,
            pub dqb_itime: ::uint32_t,
            pub dqb_id: ::uint32_t,
            pub dqb_spare: [::uint32_t; 4],
        }

        pub struct if_msghdr {
            pub ifm_msglen: ::c_ushort,
            pub ifm_version: ::c_uchar,
            pub ifm_type: ::c_uchar,
            pub ifm_addrs: ::c_int,
            pub ifm_flags: ::c_int,
            pub ifm_index: ::c_ushort,
            pub ifm_data: if_data,
        }

        pub struct termios {
            pub c_iflag: ::tcflag_t,
            pub c_oflag: ::tcflag_t,
            pub c_cflag: ::tcflag_t,
            pub c_lflag: ::tcflag_t,
            pub c_cc: [::cc_t; ::NCCS],
            pub c_ispeed: ::speed_t,
            pub c_ospeed: ::speed_t,
        }

        pub struct flock {
            pub l_start: ::off_t,
            pub l_len: ::off_t,
            pub l_pid: ::pid_t,
            pub l_type: ::c_short,
            pub l_whence: ::c_short,
        }

        pub struct sf_hdtr {
            pub headers: *mut ::iovec,
            pub hdr_cnt: ::c_int,
            pub trailers: *mut ::iovec,
            pub trl_cnt: ::c_int,
        }

        pub struct lconv {
            pub decimal_point: *mut ::c_char,
            pub thousands_sep: *mut ::c_char,
            pub grouping: *mut ::c_char,
            pub int_curr_symbol: *mut ::c_char,
            pub currency_symbol: *mut ::c_char,
            pub mon_decimal_point: *mut ::c_char,
            pub mon_thousands_sep: *mut ::c_char,
            pub mon_grouping: *mut ::c_char,
            pub positive_sign: *mut ::c_char,
            pub negative_sign: *mut ::c_char,
            pub int_frac_digits: ::c_char,
            pub frac_digits: ::c_char,
            pub p_cs_precedes: ::c_char,
            pub p_sep_by_space: ::c_char,
            pub n_cs_precedes: ::c_char,
            pub n_sep_by_space: ::c_char,
            pub p_sign_posn: ::c_char,
            pub n_sign_posn: ::c_char,
            pub int_p_cs_precedes: ::c_char,
            pub int_n_cs_precedes: ::c_char,
            pub int_p_sep_by_space: ::c_char,
            pub int_n_sep_by_space: ::c_char,
            pub int_p_sign_posn: ::c_char,
            pub int_n_sign_posn: ::c_char,
        }

        pub struct sigevent {
            pub sigev_notify: ::c_int,
            pub sigev_signo: ::c_int,
            pub sigev_value: ::sigval,
            __unused1: *mut ::c_void,       //actually a function pointer
            pub sigev_notify_attributes: *mut ::pthread_attr_t
        }

        pub struct proc_taskinfo {
            pub pti_virtual_size: u64,
            pub pti_resident_size: u64,
            pub pti_total_user: u64,
            pub pti_total_system: u64,
            pub pti_threads_user: u64,
            pub pti_threads_system: u64,
            pub pti_policy: i32,
            pub pti_faults: i32,
            pub pti_pageins: i32,
            pub pti_cow_faults: i32,
            pub pti_messages_sent: i32,
            pub pti_messages_received: i32,
            pub pti_syscalls_mach: i32,
            pub pti_syscalls_unix: i32,
            pub pti_csw: i32,
            pub pti_threadnum: i32,
            pub pti_numrunning: i32,
            pub pti_priority: i32,
        }

        pub struct proc_bsdinfo {
            pub pbi_flags: u32,
            pub pbi_status: u32,
            pub pbi_xstatus: u32,
            pub pbi_pid: u32,
            pub pbi_ppid: u32,
            pub pbi_uid: ::uid_t,
            pub pbi_gid: ::gid_t,
            pub pbi_ruid: ::uid_t,
            pub pbi_rgid: ::gid_t,
            pub pbi_svuid: ::uid_t,
            pub pbi_svgid: ::gid_t,
            pub rfu_1: u32,
            pub pbi_comm: [::c_char; MAXCOMLEN],
            pub pbi_name: [::c_char; 32], // MAXCOMLEN * 2, but macro isn't happy...
            pub pbi_nfiles: u32,
            pub pbi_pgid: u32,
            pub pbi_pjobc: u32,
            pub e_tdev: u32,
            pub e_tpgid: u32,
            pub pbi_nice: i32,
            pub pbi_start_tvsec: u64,
            pub pbi_start_tvusec: u64,
        }

        pub struct proc_taskallinfo {
            pub pbsd: proc_bsdinfo,
            pub ptinfo: proc_taskinfo,
        }

        pub struct proc_threadinfo {
            pub pth_user_time: u64,
            pub pth_system_time: u64,
            pub pth_cpu_usage: i32,
            pub pth_policy: i32,
            pub pth_run_state: i32,
            pub pth_flags: i32,
            pub pth_sleep_time: i32,
            pub pth_curpri: i32,
            pub pth_priority: i32,
            pub pth_maxpriority: i32,
            pub pth_name: [::c_char; MAXTHREADNAMESIZE],
        }

        pub struct xsw_usage {
            pub xsu_total: u64,
            pub xsu_avail: u64,
            pub xsu_used: u64,
            pub xsu_pagesize: u32,
            pub xsu_encrypted: ::boolean_t,
        }

        pub struct xucred {
            pub cr_version: ::c_uint,
            pub cr_uid: ::uid_t,
            pub cr_ngroups: ::c_short,
            pub cr_groups: [::gid_t;16]
        }

        pub struct mach_header {
            pub magic: u32,
            pub cputype: cpu_type_t,
            pub cpusubtype: cpu_subtype_t,
            pub filetype: u32,
            pub ncmds: u32,
            pub sizeofcmds: u32,
            pub flags: u32,
        }

        pub struct mach_header_64 {
            pub magic: u32,
            pub cputype: cpu_type_t,
            pub cpusubtype: cpu_subtype_t,
            pub filetype: u32,
            pub ncmds: u32,
            pub sizeofcmds: u32,
            pub flags: u32,
            pub reserved: u32,
        }

        pub struct segment_command {
            pub cmd: u32,
            pub cmdsize: u32,
            pub segname: [::c_char; 16],
            pub vmaddr: u32,
            pub vmsize: u32,
            pub fileoff: u32,
            pub filesize: u32,
            pub maxprot: vm_prot_t,
            pub initprot: vm_prot_t,
            pub nsects: u32,
            pub flags: u32,
        }

        pub struct segment_command_64 {
            pub cmd: u32,
            pub cmdsize: u32,
            pub segname: [::c_char; 16],
            pub vmaddr: u64,
            pub vmsize: u64,
            pub fileoff: u64,
            pub filesize: u64,
            pub maxprot: vm_prot_t,
            pub initprot: vm_prot_t,
            pub nsects: u32,
            pub flags: u32,
        }

        pub struct load_command {
            pub cmd: u32,
            pub cmdsize: u32,
        }

        pub struct sockaddr_dl {
            pub sdl_len: ::c_uchar,
            pub sdl_family: ::c_uchar,
            pub sdl_index: ::c_ushort,
            pub sdl_type: ::c_uchar,
            pub sdl_nlen: ::c_uchar,
            pub sdl_alen: ::c_uchar,
            pub sdl_slen: ::c_uchar,
            pub sdl_data: [::c_char; 12],
        }

        pub struct sockaddr_inarp {
            pub sin_len: ::c_uchar,
            pub sin_family: ::c_uchar,
            pub sin_port: ::c_ushort,
            pub sin_addr: ::in_addr,
            pub sin_srcaddr: ::in_addr,
            pub sin_tos: ::c_ushort,
            pub sin_other: ::c_ushort,
        }

        pub struct sockaddr_ctl {
            pub sc_len: ::c_uchar,
            pub sc_family: ::c_uchar,
            pub ss_sysaddr: ::uint16_t,
            pub sc_id: ::uint32_t,
            pub sc_unit: ::uint32_t,
            pub sc_reserved: [::uint32_t; 5],
        }

        // sys/ipc.h:

        pub struct ipc_perm {
            pub uid: ::uid_t,
            pub gid: ::gid_t,
            pub cuid: ::uid_t,
            pub cgid: ::gid_t,
            pub mode: ::mode_t,
            pub _seq: ::c_ushort,
            pub _key: ::key_t,
        }

        // FIXME: this should have align 4 but it's got align 8 on 64-bit
        pub struct shmid_ds {
            pub shm_perm: ipc_perm,
            pub shm_segsz: ::size_t,
            pub shm_lpid: ::pid_t,
            pub shm_cpid: ::pid_t,
            pub shm_nattch: ::shmatt_t,
            pub shm_atime: ::time_t,  // FIXME: 64-bit wrong align => wrong offset
            pub shm_dtime: ::time_t,  // FIXME: 64-bit wrong align => wrong offset
            pub shm_ctime: ::time_t,  // FIXME: 64-bit wrong align => wrong offset
            // FIXME: 64-bit wrong align => wrong offset:
            pub shm_internal: *mut ::c_void,

        }
    }

    pub const _UTX_USERSIZE: usize = 256;
    pub const _UTX_LINESIZE: usize = 32;
    pub const _UTX_IDSIZE: usize = 4;
    pub const _UTX_HOSTSIZE: usize = 256;

    pub const EMPTY: ::c_short = 0;
    pub const RUN_LVL: ::c_short = 1;
    pub const BOOT_TIME: ::c_short = 2;
    pub const OLD_TIME: ::c_short = 3;
    pub const NEW_TIME: ::c_short = 4;
    pub const INIT_PROCESS: ::c_short = 5;
    pub const LOGIN_PROCESS: ::c_short = 6;
    pub const USER_PROCESS: ::c_short = 7;
    pub const DEAD_PROCESS: ::c_short = 8;
    pub const ACCOUNTING: ::c_short = 9;
    pub const SIGNATURE: ::c_short = 10;
    pub const SHUTDOWN_TIME: ::c_short = 11;

    pub const LC_COLLATE_MASK: ::c_int = (1 << 0);
    pub const LC_CTYPE_MASK: ::c_int = (1 << 1);
    pub const LC_MESSAGES_MASK: ::c_int = (1 << 2);
    pub const LC_MONETARY_MASK: ::c_int = (1 << 3);
    pub const LC_NUMERIC_MASK: ::c_int = (1 << 4);
    pub const LC_TIME_MASK: ::c_int = (1 << 5);
    pub const LC_ALL_MASK: ::c_int = LC_COLLATE_MASK
                                   | LC_CTYPE_MASK
                                   | LC_MESSAGES_MASK
                                   | LC_MONETARY_MASK
                                   | LC_NUMERIC_MASK
                                   | LC_TIME_MASK;

    pub const CODESET: ::nl_item = 0;
    pub const D_T_FMT: ::nl_item = 1;
    pub const D_FMT: ::nl_item = 2;
    pub const T_FMT: ::nl_item = 3;
    pub const T_FMT_AMPM: ::nl_item = 4;
    pub const AM_STR: ::nl_item = 5;
    pub const PM_STR: ::nl_item = 6;

    pub const DAY_1: ::nl_item = 7;
    pub const DAY_2: ::nl_item = 8;
    pub const DAY_3: ::nl_item = 9;
    pub const DAY_4: ::nl_item = 10;
    pub const DAY_5: ::nl_item = 11;
    pub const DAY_6: ::nl_item = 12;
    pub const DAY_7: ::nl_item = 13;

    pub const ABDAY_1: ::nl_item = 14;
    pub const ABDAY_2: ::nl_item = 15;
    pub const ABDAY_3: ::nl_item = 16;
    pub const ABDAY_4: ::nl_item = 17;
    pub const ABDAY_5: ::nl_item = 18;
    pub const ABDAY_6: ::nl_item = 19;
    pub const ABDAY_7: ::nl_item = 20;

    pub const MON_1: ::nl_item = 21;
    pub const MON_2: ::nl_item = 22;
    pub const MON_3: ::nl_item = 23;
    pub const MON_4: ::nl_item = 24;
    pub const MON_5: ::nl_item = 25;
    pub const MON_6: ::nl_item = 26;
    pub const MON_7: ::nl_item = 27;
    pub const MON_8: ::nl_item = 28;
    pub const MON_9: ::nl_item = 29;
    pub const MON_10: ::nl_item = 30;
    pub const MON_11: ::nl_item = 31;
    pub const MON_12: ::nl_item = 32;

    pub const ABMON_1: ::nl_item = 33;
    pub const ABMON_2: ::nl_item = 34;
    pub const ABMON_3: ::nl_item = 35;
    pub const ABMON_4: ::nl_item = 36;
    pub const ABMON_5: ::nl_item = 37;
    pub const ABMON_6: ::nl_item = 38;
    pub const ABMON_7: ::nl_item = 39;
    pub const ABMON_8: ::nl_item = 40;
    pub const ABMON_9: ::nl_item = 41;
    pub const ABMON_10: ::nl_item = 42;
    pub const ABMON_11: ::nl_item = 43;
    pub const ABMON_12: ::nl_item = 44;

    pub const CLOCK_REALTIME: ::clockid_t = 0;
    pub const CLOCK_MONOTONIC: ::clockid_t = 6;
    pub const CLOCK_PROCESS_CPUTIME_ID: ::clockid_t = 12;
    pub const CLOCK_THREAD_CPUTIME_ID: ::clockid_t = 16;

    pub const ERA: ::nl_item = 45;
    pub const ERA_D_FMT: ::nl_item = 46;
    pub const ERA_D_T_FMT: ::nl_item = 47;
    pub const ERA_T_FMT: ::nl_item = 48;
    pub const ALT_DIGITS: ::nl_item = 49;

    pub const RADIXCHAR: ::nl_item = 50;
    pub const THOUSEP: ::nl_item = 51;

    pub const YESEXPR: ::nl_item = 52;
    pub const NOEXPR: ::nl_item = 53;

    pub const YESSTR: ::nl_item = 54;
    pub const NOSTR: ::nl_item = 55;

    pub const CRNCYSTR: ::nl_item = 56;

    pub const D_MD_ORDER: ::nl_item = 57;

    pub const EXIT_FAILURE: ::c_int = 1;
    pub const EXIT_SUCCESS: ::c_int = 0;
    pub const RAND_MAX: ::c_int = 2147483647;
    pub const EOF: ::c_int = -1;
    pub const SEEK_SET: ::c_int = 0;
    pub const SEEK_CUR: ::c_int = 1;
    pub const SEEK_END: ::c_int = 2;
    pub const _IOFBF: ::c_int = 0;
    pub const _IONBF: ::c_int = 2;
    pub const _IOLBF: ::c_int = 1;
    pub const BUFSIZ: ::c_uint = 1024;
    pub const FOPEN_MAX: ::c_uint = 20;
    pub const FILENAME_MAX: ::c_uint = 1024;
    pub const L_tmpnam: ::c_uint = 1024;
    pub const TMP_MAX: ::c_uint = 308915776;
    pub const _PC_LINK_MAX: ::c_int = 1;
    pub const _PC_MAX_CANON: ::c_int = 2;
    pub const _PC_MAX_INPUT: ::c_int = 3;
    pub const _PC_NAME_MAX: ::c_int = 4;
    pub const _PC_PATH_MAX: ::c_int = 5;
    pub const _PC_PIPE_BUF: ::c_int = 6;
    pub const _PC_CHOWN_RESTRICTED: ::c_int = 7;
    pub const _PC_NO_TRUNC: ::c_int = 8;
    pub const _PC_VDISABLE: ::c_int = 9;
    pub const O_DSYNC: ::c_int = 0x400000;
    pub const O_NOCTTY: ::c_int = 0x20000;
    pub const O_CLOEXEC: ::c_int = 0x1000000;
    pub const O_DIRECTORY: ::c_int = 0x100000;
    pub const S_IFIFO: mode_t = 4096;
    pub const S_IFCHR: mode_t = 8192;
    pub const S_IFBLK: mode_t = 24576;
    pub const S_IFDIR: mode_t = 16384;
    pub const S_IFREG: mode_t = 32768;
    pub const S_IFLNK: mode_t = 40960;
    pub const S_IFSOCK: mode_t = 49152;
    pub const S_IFMT: mode_t = 61440;
    pub const S_IEXEC: mode_t = 64;
    pub const S_IWRITE: mode_t = 128;
    pub const S_IREAD: mode_t = 256;
    pub const S_IRWXU: mode_t = 448;
    pub const S_IXUSR: mode_t = 64;
    pub const S_IWUSR: mode_t = 128;
    pub const S_IRUSR: mode_t = 256;
    pub const S_IRWXG: mode_t = 56;
    pub const S_IXGRP: mode_t = 8;
    pub const S_IWGRP: mode_t = 16;
    pub const S_IRGRP: mode_t = 32;
    pub const S_IRWXO: mode_t = 7;
    pub const S_IXOTH: mode_t = 1;
    pub const S_IWOTH: mode_t = 2;
    pub const S_IROTH: mode_t = 4;
    pub const F_OK: ::c_int = 0;
    pub const R_OK: ::c_int = 4;
    pub const W_OK: ::c_int = 2;
    pub const X_OK: ::c_int = 1;
    pub const STDIN_FILENO: ::c_int = 0;
    pub const STDOUT_FILENO: ::c_int = 1;
    pub const STDERR_FILENO: ::c_int = 2;
    pub const F_LOCK: ::c_int = 1;
    pub const F_TEST: ::c_int = 3;
    pub const F_TLOCK: ::c_int = 2;
    pub const F_ULOCK: ::c_int = 0;
    pub const F_GETLK: ::c_int = 7;
    pub const F_SETLK: ::c_int = 8;
    pub const F_SETLKW: ::c_int = 9;
    pub const SIGHUP: ::c_int = 1;
    pub const SIGINT: ::c_int = 2;
    pub const SIGQUIT: ::c_int = 3;
    pub const SIGILL: ::c_int = 4;
    pub const SIGABRT: ::c_int = 6;
    pub const SIGEMT: ::c_int = 7;
    pub const SIGFPE: ::c_int = 8;
    pub const SIGKILL: ::c_int = 9;
    pub const SIGSEGV: ::c_int = 11;
    pub const SIGPIPE: ::c_int = 13;
    pub const SIGALRM: ::c_int = 14;
    pub const SIGTERM: ::c_int = 15;

    pub const PROT_NONE: ::c_int = 0;
    pub const PROT_READ: ::c_int = 1;
    pub const PROT_WRITE: ::c_int = 2;
    pub const PROT_EXEC: ::c_int = 4;

    pub const MAP_FILE: ::c_int = 0x0000;
    pub const MAP_SHARED: ::c_int = 0x0001;
    pub const MAP_PRIVATE: ::c_int = 0x0002;
    pub const MAP_FIXED: ::c_int = 0x0010;
    pub const MAP_ANON: ::c_int = 0x1000;

    pub const VM_FLAGS_FIXED: ::c_int = 0x0000;
    pub const VM_FLAGS_ANYWHERE: ::c_int = 0x0001;
    pub const VM_FLAGS_PURGABLE: ::c_int = 0x0002;
    pub const VM_FLAGS_RANDOM_ADDR: ::c_int = 0x0008;
    pub const VM_FLAGS_NO_CACHE: ::c_int = 0x0010;
    pub const VM_FLAGS_RESILIENT_CODESIGN: ::c_int = 0x0020;
    pub const VM_FLAGS_RESILIENT_MEDIA: ::c_int = 0x0040;
    pub const VM_FLAGS_OVERWRITE: ::c_int = 0x4000;
    pub const VM_FLAGS_SUPERPAGE_MASK: ::c_int = 0x70000;
    pub const VM_FLAGS_RETURN_DATA_ADDR: ::c_int = 0x100000;
    pub const VM_FLAGS_RETURN_4K_DATA_ADDR: ::c_int = 0x800000;
    pub const VM_FLAGS_ALIAS_MASK: ::c_int = 0xFF000000;
    pub const VM_FLAGS_USER_ALLOCATE: ::c_int = VM_FLAGS_FIXED | VM_FLAGS_ANYWHERE |
                                                VM_FLAGS_PURGABLE |
                                                VM_FLAGS_RANDOM_ADDR |
                                                VM_FLAGS_NO_CACHE |
                                                VM_FLAGS_OVERWRITE |
                                                VM_FLAGS_SUPERPAGE_MASK |
                                                VM_FLAGS_ALIAS_MASK;
    pub const VM_FLAGS_USER_MAP: ::c_int = VM_FLAGS_USER_ALLOCATE |
                                           VM_FLAGS_RETURN_4K_DATA_ADDR |
                                           VM_FLAGS_RETURN_DATA_ADDR;
    pub const VM_FLAGS_USER_REMAP: ::c_int = VM_FLAGS_FIXED | VM_FLAGS_ANYWHERE |
                                            VM_FLAGS_RANDOM_ADDR |
                                            VM_FLAGS_OVERWRITE |
                                            VM_FLAGS_RETURN_DATA_ADDR |
                                            VM_FLAGS_RESILIENT_CODESIGN;

    pub const VM_FLAGS_SUPERPAGE_SHIFT: ::c_int = 16;
    pub const SUPERPAGE_NONE: ::c_int = 0;
    pub const SUPERPAGE_SIZE_ANY: ::c_int = 1;
    pub const VM_FLAGS_SUPERPAGE_NONE: ::c_int = SUPERPAGE_NONE <<
                                                 VM_FLAGS_SUPERPAGE_SHIFT;
    pub const VM_FLAGS_SUPERPAGE_SIZE_ANY: ::c_int = SUPERPAGE_SIZE_ANY <<
                                                     VM_FLAGS_SUPERPAGE_SHIFT;
    pub const SUPERPAGE_SIZE_2MB: ::c_int = 2;
    pub const VM_FLAGS_SUPERPAGE_SIZE_2MB: ::c_int = SUPERPAGE_SIZE_2MB <<
                                                     VM_FLAGS_SUPERPAGE_SHIFT;

    pub const VM_MEMORY_MALLOC: ::c_int = 1;
    pub const VM_MEMORY_MALLOC_SMALL: ::c_int = 2;
    pub const VM_MEMORY_MALLOC_LARGE: ::c_int = 3;
    pub const VM_MEMORY_MALLOC_HUGE: ::c_int = 4;
    pub const VM_MEMORY_SBRK: ::c_int = 5;
    pub const VM_MEMORY_REALLOC: ::c_int = 6;
    pub const VM_MEMORY_MALLOC_TINY: ::c_int = 7;
    pub const VM_MEMORY_MALLOC_LARGE_REUSABLE: ::c_int = 8;
    pub const VM_MEMORY_MALLOC_LARGE_REUSED: ::c_int = 9;
    pub const VM_MEMORY_ANALYSIS_TOOL: ::c_int = 10;
    pub const VM_MEMORY_MALLOC_NANO: ::c_int = 11;
    pub const VM_MEMORY_MACH_MSG: ::c_int = 20;
    pub const VM_MEMORY_IOKIT: ::c_int = 21;
    pub const VM_MEMORY_STACK: ::c_int = 30;
    pub const VM_MEMORY_GUARD: ::c_int = 31;
    pub const VM_MEMORY_SHARED_PMAP: ::c_int = 32;
    pub const VM_MEMORY_DYLIB: ::c_int = 33;
    pub const VM_MEMORY_OBJC_DISPATCHERS: ::c_int = 34;
    pub const VM_MEMORY_UNSHARED_PMAP: ::c_int = 35;
    pub const VM_MEMORY_APPKIT: ::c_int = 40;
    pub const VM_MEMORY_FOUNDATION: ::c_int = 41;
    pub const VM_MEMORY_COREGRAPHICS: ::c_int = 42;
    pub const VM_MEMORY_CORESERVICES: ::c_int = 43;
    pub const VM_MEMORY_CARBON: ::c_int = VM_MEMORY_CORESERVICES;
    pub const VM_MEMORY_JAVA: ::c_int = 44;
    pub const VM_MEMORY_COREDATA: ::c_int = 45;
    pub const VM_MEMORY_COREDATA_OBJECTIDS: ::c_int = 46;
    pub const VM_MEMORY_ATS: ::c_int = 50;
    pub const VM_MEMORY_LAYERKIT: ::c_int = 51;
    pub const VM_MEMORY_CGIMAGE: ::c_int = 52;
    pub const VM_MEMORY_TCMALLOC: ::c_int = 53;
    pub const VM_MEMORY_COREGRAPHICS_DATA: ::c_int = 54;
    pub const VM_MEMORY_COREGRAPHICS_SHARED: ::c_int = 55;
    pub const VM_MEMORY_COREGRAPHICS_FRAMEBUFFERS: ::c_int = 56;
    pub const VM_MEMORY_COREGRAPHICS_BACKINGSTORES: ::c_int = 57;
    pub const VM_MEMORY_COREGRAPHICS_XALLOC: ::c_int = 58;
    pub const VM_MEMORY_COREGRAPHICS_MISC: ::c_int = VM_MEMORY_COREGRAPHICS;
    pub const VM_MEMORY_DYLD: ::c_int = 60;
    pub const VM_MEMORY_DYLD_MALLOC: ::c_int = 61;
    pub const VM_MEMORY_SQLITE: ::c_int = 62;
    pub const VM_MEMORY_JAVASCRIPT_CORE: ::c_int = 63;
    pub const VM_MEMORY_JAVASCRIPT_JIT_EXECUTABLE_ALLOCATOR: ::c_int = 64;
    pub const VM_MEMORY_JAVASCRIPT_JIT_REGISTER_FILE: ::c_int = 65;
    pub const VM_MEMORY_GLSL: ::c_int = 66;
    pub const VM_MEMORY_OPENCL: ::c_int = 67;
    pub const VM_MEMORY_COREIMAGE: ::c_int = 68;
    pub const VM_MEMORY_WEBCORE_PURGEABLE_BUFFERS: ::c_int = 69;
    pub const VM_MEMORY_IMAGEIO: ::c_int = 70;
    pub const VM_MEMORY_COREPROFILE: ::c_int = 71;
    pub const VM_MEMORY_ASSETSD: ::c_int = 72;
    pub const VM_MEMORY_OS_ALLOC_ONCE: ::c_int = 73;
    pub const VM_MEMORY_LIBDISPATCH: ::c_int = 74;
    pub const VM_MEMORY_ACCELERATE: ::c_int = 75;
    pub const VM_MEMORY_COREUI: ::c_int = 76;
    pub const VM_MEMORY_COREUIFILE: ::c_int = 77;
    pub const VM_MEMORY_GENEALOGY: ::c_int = 78;
    pub const VM_MEMORY_RAWCAMERA: ::c_int = 79;
    pub const VM_MEMORY_CORPSEINFO: ::c_int = 80;
    pub const VM_MEMORY_ASL: ::c_int = 81;
    pub const VM_MEMORY_SWIFT_RUNTIME: ::c_int = 82;
    pub const VM_MEMORY_SWIFT_METADATA: ::c_int = 83;
    pub const VM_MEMORY_DHMM: ::c_int = 84;
    pub const VM_MEMORY_SCENEKIT: ::c_int = 86;
    pub const VM_MEMORY_SKYWALK: ::c_int = 87;
    pub const VM_MEMORY_APPLICATION_SPECIFIC_1: ::c_int = 240;
    pub const VM_MEMORY_APPLICATION_SPECIFIC_16: ::c_int = 255;

    pub const MAP_FAILED: *mut ::c_void = !0 as *mut ::c_void;

    pub const MCL_CURRENT: ::c_int = 0x0001;
    pub const MCL_FUTURE: ::c_int = 0x0002;

    pub const MS_ASYNC: ::c_int = 0x0001;
    pub const MS_INVALIDATE: ::c_int = 0x0002;
    pub const MS_SYNC: ::c_int = 0x0010;

    pub const MS_KILLPAGES: ::c_int = 0x0004;
    pub const MS_DEACTIVATE: ::c_int = 0x0008;

    pub const EPERM: ::c_int = 1;
    pub const ENOENT: ::c_int = 2;
    pub const ESRCH: ::c_int = 3;
    pub const EINTR: ::c_int = 4;
    pub const EIO: ::c_int = 5;
    pub const ENXIO: ::c_int = 6;
    pub const E2BIG: ::c_int = 7;
    pub const ENOEXEC: ::c_int = 8;
    pub const EBADF: ::c_int = 9;
    pub const ECHILD: ::c_int = 10;
    pub const EDEADLK: ::c_int = 11;
    pub const ENOMEM: ::c_int = 12;
    pub const EACCES: ::c_int = 13;
    pub const EFAULT: ::c_int = 14;
    pub const ENOTBLK: ::c_int = 15;
    pub const EBUSY: ::c_int = 16;
    pub const EEXIST: ::c_int = 17;
    pub const EXDEV: ::c_int = 18;
    pub const ENODEV: ::c_int = 19;
    pub const ENOTDIR: ::c_int = 20;
    pub const EISDIR: ::c_int = 21;
    pub const EINVAL: ::c_int = 22;
    pub const ENFILE: ::c_int = 23;
    pub const EMFILE: ::c_int = 24;
    pub const ENOTTY: ::c_int = 25;
    pub const ETXTBSY: ::c_int = 26;
    pub const EFBIG: ::c_int = 27;
    pub const ENOSPC: ::c_int = 28;
    pub const ESPIPE: ::c_int = 29;
    pub const EROFS: ::c_int = 30;
    pub const EMLINK: ::c_int = 31;
    pub const EPIPE: ::c_int = 32;
    pub const EDOM: ::c_int = 33;
    pub const ERANGE: ::c_int = 34;
    pub const EAGAIN: ::c_int = 35;
    pub const EWOULDBLOCK: ::c_int = EAGAIN;
    pub const EINPROGRESS: ::c_int = 36;
    pub const EALREADY: ::c_int = 37;
    pub const ENOTSOCK: ::c_int = 38;
    pub const EDESTADDRREQ: ::c_int = 39;
    pub const EMSGSIZE: ::c_int = 40;
    pub const EPROTOTYPE: ::c_int = 41;
    pub const ENOPROTOOPT: ::c_int = 42;
    pub const EPROTONOSUPPORT: ::c_int = 43;
    pub const ESOCKTNOSUPPORT: ::c_int = 44;
    pub const ENOTSUP: ::c_int = 45;
    pub const EPFNOSUPPORT: ::c_int = 46;
    pub const EAFNOSUPPORT: ::c_int = 47;
    pub const EADDRINUSE: ::c_int = 48;
    pub const EADDRNOTAVAIL: ::c_int = 49;
    pub const ENETDOWN: ::c_int = 50;
    pub const ENETUNREACH: ::c_int = 51;
    pub const ENETRESET: ::c_int = 52;
    pub const ECONNABORTED: ::c_int = 53;
    pub const ECONNRESET: ::c_int = 54;
    pub const ENOBUFS: ::c_int = 55;
    pub const EISCONN: ::c_int = 56;
    pub const ENOTCONN: ::c_int = 57;
    pub const ESHUTDOWN: ::c_int = 58;
    pub const ETOOMANYREFS: ::c_int = 59;
    pub const ETIMEDOUT: ::c_int = 60;
    pub const ECONNREFUSED: ::c_int = 61;
    pub const ELOOP: ::c_int = 62;
    pub const ENAMETOOLONG: ::c_int = 63;
    pub const EHOSTDOWN: ::c_int = 64;
    pub const EHOSTUNREACH: ::c_int = 65;
    pub const ENOTEMPTY: ::c_int = 66;
    pub const EPROCLIM: ::c_int = 67;
    pub const EUSERS: ::c_int = 68;
    pub const EDQUOT: ::c_int = 69;
    pub const ESTALE: ::c_int = 70;
    pub const EREMOTE: ::c_int = 71;
    pub const EBADRPC: ::c_int = 72;
    pub const ERPCMISMATCH: ::c_int = 73;
    pub const EPROGUNAVAIL: ::c_int = 74;
    pub const EPROGMISMATCH: ::c_int = 75;
    pub const EPROCUNAVAIL: ::c_int = 76;
    pub const ENOLCK: ::c_int = 77;
    pub const ENOSYS: ::c_int = 78;
    pub const EFTYPE: ::c_int = 79;
    pub const EAUTH: ::c_int = 80;
    pub const ENEEDAUTH: ::c_int = 81;
    pub const EPWROFF: ::c_int = 82;
    pub const EDEVERR: ::c_int = 83;
    pub const EOVERFLOW: ::c_int = 84;
    pub const EBADEXEC: ::c_int = 85;
    pub const EBADARCH: ::c_int = 86;
    pub const ESHLIBVERS: ::c_int = 87;
    pub const EBADMACHO: ::c_int = 88;
    pub const ECANCELED: ::c_int = 89;
    pub const EIDRM: ::c_int = 90;
    pub const ENOMSG: ::c_int = 91;
    pub const EILSEQ: ::c_int = 92;
    pub const ENOATTR: ::c_int = 93;
    pub const EBADMSG: ::c_int = 94;
    pub const EMULTIHOP: ::c_int = 95;
    pub const ENODATA: ::c_int = 96;
    pub const ENOLINK: ::c_int = 97;
    pub const ENOSR: ::c_int = 98;
    pub const ENOSTR: ::c_int = 99;
    pub const EPROTO: ::c_int = 100;
    pub const ETIME: ::c_int = 101;
    pub const EOPNOTSUPP: ::c_int = 102;
    pub const ENOPOLICY: ::c_int = 103;
    pub const ENOTRECOVERABLE: ::c_int = 104;
    pub const EOWNERDEAD: ::c_int = 105;
    pub const EQFULL: ::c_int = 106;
    pub const ELAST: ::c_int = 106;

    pub const EAI_AGAIN: ::c_int = 2;
    pub const EAI_BADFLAGS: ::c_int = 3;
    pub const EAI_FAIL: ::c_int = 4;
    pub const EAI_FAMILY: ::c_int = 5;
    pub const EAI_MEMORY: ::c_int = 6;
    pub const EAI_NODATA: ::c_int = 7;
    pub const EAI_NONAME: ::c_int = 8;
    pub const EAI_SERVICE: ::c_int = 9;
    pub const EAI_SOCKTYPE: ::c_int = 10;
    pub const EAI_SYSTEM: ::c_int = 11;
    pub const EAI_OVERFLOW: ::c_int = 14;

    pub const F_DUPFD: ::c_int = 0;
    pub const F_DUPFD_CLOEXEC: ::c_int = 67;
    pub const F_GETFD: ::c_int = 1;
    pub const F_SETFD: ::c_int = 2;
    pub const F_GETFL: ::c_int = 3;
    pub const F_SETFL: ::c_int = 4;
    pub const F_PREALLOCATE: ::c_int = 42;
    pub const F_RDADVISE: ::c_int = 44;
    pub const F_RDAHEAD: ::c_int = 45;
    pub const F_NOCACHE: ::c_int = 48;
    pub const F_GETPATH: ::c_int = 50;
    pub const F_FULLFSYNC: ::c_int = 51;
    pub const F_FREEZE_FS: ::c_int = 53;
    pub const F_THAW_FS: ::c_int = 54;
    pub const F_GLOBAL_NOCACHE: ::c_int = 55;
    pub const F_NODIRECT: ::c_int = 62;

    pub const F_ALLOCATECONTIG: ::c_uint = 0x02;
    pub const F_ALLOCATEALL: ::c_uint = 0x04;

    pub const F_PEOFPOSMODE: ::c_int = 3;
    pub const F_VOLPOSMODE: ::c_int = 4;

    pub const AT_FDCWD: ::c_int = -2;
    pub const AT_EACCESS: ::c_int = 0x0010;
    pub const AT_SYMLINK_NOFOLLOW: ::c_int = 0x0020;
    pub const AT_SYMLINK_FOLLOW: ::c_int = 0x0040;
    pub const AT_REMOVEDIR: ::c_int = 0x0080;

    pub const TIOCMODG: ::c_ulong = 0x40047403;
    pub const TIOCMODS: ::c_ulong = 0x80047404;
    pub const TIOCM_LE: ::c_int = 0x1;
    pub const TIOCM_DTR: ::c_int = 0x2;
    pub const TIOCM_RTS: ::c_int = 0x4;
    pub const TIOCM_ST: ::c_int = 0x8;
    pub const TIOCM_SR: ::c_int = 0x10;
    pub const TIOCM_CTS: ::c_int = 0x20;
    pub const TIOCM_CAR: ::c_int = 0x40;
    pub const TIOCM_CD: ::c_int = 0x40;
    pub const TIOCM_RNG: ::c_int = 0x80;
    pub const TIOCM_RI: ::c_int = 0x80;
    pub const TIOCM_DSR: ::c_int = 0x100;
    pub const TIOCEXCL: ::c_int = 0x2000740d;
    pub const TIOCNXCL: ::c_int = 0x2000740e;
    pub const TIOCFLUSH: ::c_ulong = 0x80047410;
    pub const TIOCGETD: ::c_ulong = 0x4004741a;
    pub const TIOCSETD: ::c_ulong = 0x8004741b;
    pub const TIOCIXON: ::c_uint = 0x20007481;
    pub const TIOCIXOFF: ::c_uint = 0x20007480;
    pub const TIOCSBRK: ::c_uint = 0x2000747b;
    pub const TIOCCBRK: ::c_uint = 0x2000747a;
    pub const TIOCSDTR: ::c_uint = 0x20007479;
    pub const TIOCCDTR: ::c_uint = 0x20007478;
    pub const TIOCGPGRP: ::c_ulong = 0x40047477;
    pub const TIOCSPGRP: ::c_ulong = 0x80047476;
    pub const TIOCOUTQ: ::c_ulong = 0x40047473;
    pub const TIOCSTI: ::c_ulong = 0x80017472;
    pub const TIOCNOTTY: ::c_uint = 0x20007471;
    pub const TIOCPKT: ::c_ulong = 0x80047470;
    pub const TIOCPKT_DATA: ::c_int = 0x0;
    pub const TIOCPKT_FLUSHREAD: ::c_int = 0x1;
    pub const TIOCPKT_FLUSHWRITE: ::c_int = 0x2;
    pub const TIOCPKT_STOP: ::c_int = 0x4;
    pub const TIOCPKT_START: ::c_int = 0x8;
    pub const TIOCPKT_NOSTOP: ::c_int = 0x10;
    pub const TIOCPKT_DOSTOP: ::c_int = 0x20;
    pub const TIOCPKT_IOCTL: ::c_int = 0x40;
    pub const TIOCSTOP: ::c_uint = 0x2000746f;
    pub const TIOCSTART: ::c_uint = 0x2000746e;
    pub const TIOCMSET: ::c_ulong = 0x8004746d;
    pub const TIOCMBIS: ::c_ulong = 0x8004746c;
    pub const TIOCMBIC: ::c_ulong = 0x8004746b;
    pub const TIOCMGET: ::c_ulong = 0x4004746a;
    pub const TIOCREMOTE: ::c_ulong = 0x80047469;
    pub const TIOCGWINSZ: ::c_ulong = 0x40087468;
    pub const TIOCSWINSZ: ::c_ulong = 0x80087467;
    pub const TIOCUCNTL: ::c_ulong = 0x80047466;
    pub const TIOCSTAT: ::c_uint = 0x20007465;
    pub const TIOCSCONS: ::c_uint = 0x20007463;
    pub const TIOCCONS: ::c_ulong = 0x80047462;
    pub const TIOCSCTTY: ::c_uint = 0x20007461;
    pub const TIOCEXT: ::c_ulong = 0x80047460;
    pub const TIOCSIG: ::c_uint = 0x2000745f;
    pub const TIOCDRAIN: ::c_uint = 0x2000745e;
    pub const TIOCMSDTRWAIT: ::c_ulong = 0x8004745b;
    pub const TIOCMGDTRWAIT: ::c_ulong = 0x4004745a;
    pub const TIOCSDRAINWAIT: ::c_ulong = 0x80047457;
    pub const TIOCGDRAINWAIT: ::c_ulong = 0x40047456;
    pub const TIOCDSIMICROCODE: ::c_uint = 0x20007455;
    pub const TIOCPTYGRANT: ::c_uint = 0x20007454;
    pub const TIOCPTYGNAME: ::c_uint = 0x40807453;
    pub const TIOCPTYUNLK: ::c_uint = 0x20007452;

    pub const B0: speed_t = 0;
    pub const B50: speed_t = 50;
    pub const B75: speed_t = 75;
    pub const B110: speed_t = 110;
    pub const B134: speed_t = 134;
    pub const B150: speed_t = 150;
    pub const B200: speed_t = 200;
    pub const B300: speed_t = 300;
    pub const B600: speed_t = 600;
    pub const B1200: speed_t = 1200;
    pub const B1800: speed_t = 1800;
    pub const B2400: speed_t = 2400;
    pub const B4800: speed_t = 4800;
    pub const B9600: speed_t = 9600;
    pub const B19200: speed_t = 19200;
    pub const B38400: speed_t = 38400;
    pub const B7200: speed_t = 7200;
    pub const B14400: speed_t = 14400;
    pub const B28800: speed_t = 28800;
    pub const B57600: speed_t = 57600;
    pub const B76800: speed_t = 76800;
    pub const B115200: speed_t = 115200;
    pub const B230400: speed_t = 230400;
    pub const EXTA: speed_t = 19200;
    pub const EXTB: speed_t = 38400;

    pub const SIGTRAP: ::c_int = 5;

    pub const GLOB_APPEND  : ::c_int = 0x0001;
    pub const GLOB_DOOFFS  : ::c_int = 0x0002;
    pub const GLOB_ERR     : ::c_int = 0x0004;
    pub const GLOB_MARK    : ::c_int = 0x0008;
    pub const GLOB_NOCHECK : ::c_int = 0x0010;
    pub const GLOB_NOSORT  : ::c_int = 0x0020;
    pub const GLOB_NOESCAPE: ::c_int = 0x2000;

    pub const GLOB_NOSPACE : ::c_int = -1;
    pub const GLOB_ABORTED : ::c_int = -2;
    pub const GLOB_NOMATCH : ::c_int = -3;

    pub const POSIX_MADV_NORMAL: ::c_int = 0;
    pub const POSIX_MADV_RANDOM: ::c_int = 1;
    pub const POSIX_MADV_SEQUENTIAL: ::c_int = 2;
    pub const POSIX_MADV_WILLNEED: ::c_int = 3;
    pub const POSIX_MADV_DONTNEED: ::c_int = 4;

    pub const _SC_IOV_MAX: ::c_int = 56;
    pub const _SC_GETGR_R_SIZE_MAX: ::c_int = 70;
    pub const _SC_GETPW_R_SIZE_MAX: ::c_int = 71;
    pub const _SC_LOGIN_NAME_MAX: ::c_int = 73;
    pub const _SC_MQ_PRIO_MAX: ::c_int = 75;
    pub const _SC_THREAD_ATTR_STACKADDR: ::c_int = 82;
    pub const _SC_THREAD_ATTR_STACKSIZE: ::c_int = 83;
    pub const _SC_THREAD_DESTRUCTOR_ITERATIONS: ::c_int = 85;
    pub const _SC_THREAD_KEYS_MAX: ::c_int = 86;
    pub const _SC_THREAD_PRIO_INHERIT: ::c_int = 87;
    pub const _SC_THREAD_PRIO_PROTECT: ::c_int = 88;
    pub const _SC_THREAD_PRIORITY_SCHEDULING: ::c_int = 89;
    pub const _SC_THREAD_PROCESS_SHARED: ::c_int = 90;
    pub const _SC_THREAD_SAFE_FUNCTIONS: ::c_int = 91;
    pub const _SC_THREAD_STACK_MIN: ::c_int = 93;
    pub const _SC_THREAD_THREADS_MAX: ::c_int = 94;
    pub const _SC_THREADS: ::c_int = 96;
    pub const _SC_TTY_NAME_MAX: ::c_int = 101;
    pub const _SC_ATEXIT_MAX: ::c_int = 107;
    pub const _SC_XOPEN_CRYPT: ::c_int = 108;
    pub const _SC_XOPEN_ENH_I18N: ::c_int = 109;
    pub const _SC_XOPEN_LEGACY: ::c_int = 110;
    pub const _SC_XOPEN_REALTIME: ::c_int = 111;
    pub const _SC_XOPEN_REALTIME_THREADS: ::c_int = 112;
    pub const _SC_XOPEN_SHM: ::c_int = 113;
    pub const _SC_XOPEN_UNIX: ::c_int = 115;
    pub const _SC_XOPEN_VERSION: ::c_int = 116;
    pub const _SC_XOPEN_XCU_VERSION: ::c_int = 121;

    pub const PTHREAD_PROCESS_PRIVATE: ::c_int = 2;
    pub const PTHREAD_PROCESS_SHARED: ::c_int = 1;
    pub const PTHREAD_CREATE_JOINABLE: ::c_int = 1;
    pub const PTHREAD_CREATE_DETACHED: ::c_int = 2;
    pub const PTHREAD_STACK_MIN: ::size_t = 8192;

    pub const RLIMIT_CPU: ::c_int = 0;
    pub const RLIMIT_FSIZE: ::c_int = 1;
    pub const RLIMIT_DATA: ::c_int = 2;
    pub const RLIMIT_STACK: ::c_int = 3;
    pub const RLIMIT_CORE: ::c_int = 4;
    pub const RLIMIT_AS: ::c_int = 5;
    pub const RLIMIT_RSS: ::c_int = RLIMIT_AS;
    pub const RLIMIT_MEMLOCK: ::c_int = 6;
    pub const RLIMIT_NPROC: ::c_int = 7;
    pub const RLIMIT_NOFILE: ::c_int = 8;
    pub const RLIM_NLIMITS: ::c_int = 9;
    pub const _RLIMIT_POSIX_FLAG: ::c_int = 0x1000;

    pub const RLIM_INFINITY: rlim_t = 0x7fff_ffff_ffff_ffff;

    pub const RUSAGE_SELF: ::c_int = 0;
    pub const RUSAGE_CHILDREN: ::c_int = -1;

    pub const MADV_NORMAL: ::c_int = 0;
    pub const MADV_RANDOM: ::c_int = 1;
    pub const MADV_SEQUENTIAL: ::c_int = 2;
    pub const MADV_WILLNEED: ::c_int = 3;
    pub const MADV_DONTNEED: ::c_int = 4;
    pub const MADV_FREE: ::c_int = 5;
    pub const MADV_ZERO_WIRED_PAGES: ::c_int = 6;
    pub const MADV_FREE_REUSABLE: ::c_int = 7;
    pub const MADV_FREE_REUSE: ::c_int = 8;
    pub const MADV_CAN_REUSE: ::c_int = 9;

    pub const MINCORE_INCORE: ::c_int =  0x1;
    pub const MINCORE_REFERENCED: ::c_int = 0x2;
    pub const MINCORE_MODIFIED: ::c_int = 0x4;
    pub const MINCORE_REFERENCED_OTHER: ::c_int = 0x8;
    pub const MINCORE_MODIFIED_OTHER: ::c_int = 0x10;

    //
    // sys/netinet/in.h
    // Protocols (RFC 1700)
    // NOTE: These are in addition to the constants defined in src/unix/mod.rs

    // IPPROTO_IP defined in src/unix/mod.rs
    /// IP6 hop-by-hop options
    pub const IPPROTO_HOPOPTS: ::c_int = 0;
    // IPPROTO_ICMP defined in src/unix/mod.rs
    /// group mgmt protocol
    pub const IPPROTO_IGMP: ::c_int = 2;
    /// gateway<sup>2</sup> (deprecated)
    pub const IPPROTO_GGP: ::c_int = 3;
    /// for compatibility
    pub const IPPROTO_IPIP: ::c_int = 4;
    // IPPROTO_TCP defined in src/unix/mod.rs
    /// Stream protocol II.
    pub const IPPROTO_ST: ::c_int = 7;
    /// exterior gateway protocol
    pub const IPPROTO_EGP: ::c_int = 8;
    /// private interior gateway
    pub const IPPROTO_PIGP: ::c_int = 9;
    /// BBN RCC Monitoring
    pub const IPPROTO_RCCMON: ::c_int = 10;
    /// network voice protocol
    pub const IPPROTO_NVPII: ::c_int = 11;
    /// pup
    pub const IPPROTO_PUP: ::c_int = 12;
    /// Argus
    pub const IPPROTO_ARGUS: ::c_int = 13;
    /// EMCON
    pub const IPPROTO_EMCON: ::c_int = 14;
    /// Cross Net Debugger
    pub const IPPROTO_XNET: ::c_int = 15;
    /// Chaos
    pub const IPPROTO_CHAOS: ::c_int = 16;
    // IPPROTO_UDP defined in src/unix/mod.rs
    /// Multiplexing
    pub const IPPROTO_MUX: ::c_int = 18;
    /// DCN Measurement Subsystems
    pub const IPPROTO_MEAS: ::c_int = 19;
    /// Host Monitoring
    pub const IPPROTO_HMP: ::c_int = 20;
    /// Packet Radio Measurement
    pub const IPPROTO_PRM: ::c_int = 21;
    /// xns idp
    pub const IPPROTO_IDP: ::c_int = 22;
    /// Trunk-1
    pub const IPPROTO_TRUNK1: ::c_int = 23;
    /// Trunk-2
    pub const IPPROTO_TRUNK2: ::c_int = 24;
    /// Leaf-1
    pub const IPPROTO_LEAF1: ::c_int = 25;
    /// Leaf-2
    pub const IPPROTO_LEAF2: ::c_int = 26;
    /// Reliable Data
    pub const IPPROTO_RDP: ::c_int = 27;
    /// Reliable Transaction
    pub const IPPROTO_IRTP: ::c_int = 28;
    /// tp-4 w/ class negotiation
    pub const IPPROTO_TP: ::c_int = 29;
    /// Bulk Data Transfer
    pub const IPPROTO_BLT: ::c_int = 30;
    /// Network Services
    pub const IPPROTO_NSP: ::c_int = 31;
    /// Merit Internodal
    pub const IPPROTO_INP: ::c_int = 32;
    /// Sequential Exchange
    pub const IPPROTO_SEP: ::c_int = 33;
    /// Third Party Connect
    pub const IPPROTO_3PC: ::c_int = 34;
    /// InterDomain Policy Routing
    pub const IPPROTO_IDPR: ::c_int = 35;
    /// XTP
    pub const IPPROTO_XTP: ::c_int = 36;
    /// Datagram Delivery
    pub const IPPROTO_DDP: ::c_int = 37;
    /// Control Message Transport
    pub const IPPROTO_CMTP: ::c_int = 38;
    /// TP++ Transport
    pub const IPPROTO_TPXX: ::c_int = 39;
    /// IL transport protocol
    pub const IPPROTO_IL: ::c_int = 40;
    // IPPROTO_IPV6 defined in src/unix/mod.rs
    /// Source Demand Routing
    pub const IPPROTO_SDRP: ::c_int = 42;
    /// IP6 routing header
    pub const IPPROTO_ROUTING: ::c_int = 43;
    /// IP6 fragmentation header
    pub const IPPROTO_FRAGMENT: ::c_int = 44;
    /// InterDomain Routing
    pub const IPPROTO_IDRP: ::c_int = 45;
    /// resource reservation
    pub const IPPROTO_RSVP: ::c_int = 46;
    /// General Routing Encap.
    pub const IPPROTO_GRE: ::c_int = 47;
    /// Mobile Host Routing
    pub const IPPROTO_MHRP: ::c_int = 48;
    /// BHA
    pub const IPPROTO_BHA: ::c_int = 49;
    /// IP6 Encap Sec. Payload
    pub const IPPROTO_ESP: ::c_int = 50;
    /// IP6 Auth Header
    pub const IPPROTO_AH: ::c_int = 51;
    /// Integ. Net Layer Security
    pub const IPPROTO_INLSP: ::c_int = 52;
    /// IP with encryption
    pub const IPPROTO_SWIPE: ::c_int = 53;
    /// Next Hop Resolution
    pub const IPPROTO_NHRP: ::c_int = 54;
    /* 55-57: Unassigned */
    // IPPROTO_ICMPV6 defined in src/unix/mod.rs
    /// IP6 no next header
    pub const IPPROTO_NONE: ::c_int = 59;
    /// IP6 destination option
    pub const IPPROTO_DSTOPTS: ::c_int = 60;
    /// any host internal protocol
    pub const IPPROTO_AHIP: ::c_int = 61;
    /// CFTP
    pub const IPPROTO_CFTP: ::c_int = 62;
    /// "hello" routing protocol
    pub const IPPROTO_HELLO: ::c_int = 63;
    /// SATNET/Backroom EXPAK
    pub const IPPROTO_SATEXPAK: ::c_int = 64;
    /// Kryptolan
    pub const IPPROTO_KRYPTOLAN: ::c_int = 65;
    /// Remote Virtual Disk
    pub const IPPROTO_RVD: ::c_int = 66;
    /// Pluribus Packet Core
    pub const IPPROTO_IPPC: ::c_int = 67;
    /// Any distributed FS
    pub const IPPROTO_ADFS: ::c_int = 68;
    /// Satnet Monitoring
    pub const IPPROTO_SATMON: ::c_int = 69;
    /// VISA Protocol
    pub const IPPROTO_VISA: ::c_int = 70;
    /// Packet Core Utility
    pub const IPPROTO_IPCV: ::c_int = 71;
    /// Comp. Prot. Net. Executive
    pub const IPPROTO_CPNX: ::c_int = 72;
    /// Comp. Prot. HeartBeat
    pub const IPPROTO_CPHB: ::c_int = 73;
    /// Wang Span Network
    pub const IPPROTO_WSN: ::c_int = 74;
    /// Packet Video Protocol
    pub const IPPROTO_PVP: ::c_int = 75;
    /// BackRoom SATNET Monitoring
    pub const IPPROTO_BRSATMON: ::c_int = 76;
    /// Sun net disk proto (temp.)
    pub const IPPROTO_ND: ::c_int = 77;
    /// WIDEBAND Monitoring
    pub const IPPROTO_WBMON: ::c_int = 78;
    /// WIDEBAND EXPAK
    pub const IPPROTO_WBEXPAK: ::c_int = 79;
    /// ISO cnlp
    pub const IPPROTO_EON: ::c_int = 80;
    /// VMTP
    pub const IPPROTO_VMTP: ::c_int = 81;
    /// Secure VMTP
    pub const IPPROTO_SVMTP: ::c_int = 82;
    /// Banyon VINES
    pub const IPPROTO_VINES: ::c_int = 83;
    /// TTP
    pub const IPPROTO_TTP: ::c_int = 84;
    /// NSFNET-IGP
    pub const IPPROTO_IGP: ::c_int = 85;
    /// dissimilar gateway prot.
    pub const IPPROTO_DGP: ::c_int = 86;
    /// TCF
    pub const IPPROTO_TCF: ::c_int = 87;
    /// Cisco/GXS IGRP
    pub const IPPROTO_IGRP: ::c_int = 88;
    /// OSPFIGP
    pub const IPPROTO_OSPFIGP: ::c_int = 89;
    /// Strite RPC protocol
    pub const IPPROTO_SRPC: ::c_int = 90;
    /// Locus Address Resoloution
    pub const IPPROTO_LARP: ::c_int = 91;
    /// Multicast Transport
    pub const IPPROTO_MTP: ::c_int = 92;
    /// AX.25 Frames
    pub const IPPROTO_AX25: ::c_int = 93;
    /// IP encapsulated in IP
    pub const IPPROTO_IPEIP: ::c_int = 94;
    /// Mobile Int.ing control
    pub const IPPROTO_MICP: ::c_int = 95;
    /// Semaphore Comm. security
    pub const IPPROTO_SCCSP: ::c_int = 96;
    /// Ethernet IP encapsulation
    pub const IPPROTO_ETHERIP: ::c_int = 97;
    /// encapsulation header
    pub const IPPROTO_ENCAP: ::c_int = 98;
    /// any private encr. scheme
    pub const IPPROTO_APES: ::c_int = 99;
    /// GMTP
    pub const IPPROTO_GMTP: ::c_int = 100;

    /* 101-254: Partly Unassigned */
    /// Protocol Independent Mcast
    pub const IPPROTO_PIM: ::c_int = 103;
    /// payload compression (IPComp)
    pub const IPPROTO_IPCOMP: ::c_int = 108;
    /// PGM
    pub const IPPROTO_PGM: ::c_int = 113;
    /// SCTP
    pub const IPPROTO_SCTP: ::c_int = 132;

    /* 255: Reserved */
    /* BSD Private, local use, namespace incursion */
    /// divert pseudo-protocol
    pub const IPPROTO_DIVERT: ::c_int = 254;
    /// raw IP packet
    pub const IPPROTO_RAW: ::c_int = 255;
    pub const IPPROTO_MAX: ::c_int = 256;
    /// last return value of *_input(), meaning "all job for this pkt is done".
    pub const IPPROTO_DONE: ::c_int = 257;

    pub const AF_UNSPEC: ::c_int = 0;
    pub const AF_LOCAL: ::c_int = 1;
    pub const AF_UNIX: ::c_int = AF_LOCAL;
    pub const AF_INET: ::c_int = 2;
    pub const AF_IMPLINK: ::c_int = 3;
    pub const AF_PUP: ::c_int = 4;
    pub const AF_CHAOS: ::c_int = 5;
    pub const AF_NS: ::c_int = 6;
    pub const AF_ISO: ::c_int = 7;
    pub const AF_OSI: ::c_int = AF_ISO;
    pub const AF_ECMA: ::c_int = 8;
    pub const AF_DATAKIT: ::c_int = 9;
    pub const AF_CCITT: ::c_int = 10;
    pub const AF_SNA: ::c_int = 11;
    pub const AF_DECnet: ::c_int = 12;
    pub const AF_DLI: ::c_int = 13;
    pub const AF_LAT: ::c_int = 14;
    pub const AF_HYLINK: ::c_int = 15;
    pub const AF_APPLETALK: ::c_int = 16;
    pub const AF_ROUTE: ::c_int = 17;
    pub const AF_LINK: ::c_int = 18;
    pub const pseudo_AF_XTP: ::c_int = 19;
    pub const AF_COIP: ::c_int = 20;
    pub const AF_CNT: ::c_int = 21;
    pub const pseudo_AF_RTIP: ::c_int = 22;
    pub const AF_IPX: ::c_int = 23;
    pub const AF_SIP: ::c_int = 24;
    pub const pseudo_AF_PIP: ::c_int = 25;
    pub const AF_ISDN: ::c_int = 28;
    pub const AF_E164: ::c_int = AF_ISDN;
    pub const pseudo_AF_KEY: ::c_int = 29;
    pub const AF_INET6: ::c_int = 30;
    pub const AF_NATM: ::c_int = 31;
    pub const AF_SYSTEM: ::c_int = 32;
    pub const AF_NETBIOS: ::c_int = 33;
    pub const AF_PPP: ::c_int = 34;
    pub const pseudo_AF_HDRCMPLT: ::c_int = 35;
    #[doc(hidden)]
    pub const AF_MAX: ::c_int = 40;
    pub const AF_SYS_CONTROL: ::c_int = 2;

    pub const SYSPROTO_EVENT: ::c_int = 1;
    pub const SYSPROTO_CONTROL: ::c_int = 2;

    pub const PF_UNSPEC: ::c_int = AF_UNSPEC;
    pub const PF_LOCAL: ::c_int = AF_LOCAL;
    pub const PF_UNIX: ::c_int =  PF_LOCAL;
    pub const PF_INET: ::c_int =  AF_INET;
    pub const PF_IMPLINK: ::c_int = AF_IMPLINK;
    pub const PF_PUP: ::c_int =  AF_PUP;
    pub const PF_CHAOS: ::c_int = AF_CHAOS;
    pub const PF_NS: ::c_int =  AF_NS;
    pub const PF_ISO: ::c_int =  AF_ISO;
    pub const PF_OSI: ::c_int =  AF_ISO;
    pub const PF_ECMA: ::c_int =  AF_ECMA;
    pub const PF_DATAKIT: ::c_int = AF_DATAKIT;
    pub const PF_CCITT: ::c_int = AF_CCITT;
    pub const PF_SNA: ::c_int =  AF_SNA;
    pub const PF_DECnet: ::c_int = AF_DECnet;
    pub const PF_DLI: ::c_int =  AF_DLI;
    pub const PF_LAT: ::c_int =  AF_LAT;
    pub const PF_HYLINK: ::c_int = AF_HYLINK;
    pub const PF_APPLETALK: ::c_int = AF_APPLETALK;
    pub const PF_ROUTE: ::c_int = AF_ROUTE;
    pub const PF_LINK: ::c_int =  AF_LINK;
    pub const PF_XTP: ::c_int =  pseudo_AF_XTP;
    pub const PF_COIP: ::c_int =  AF_COIP;
    pub const PF_CNT: ::c_int =  AF_CNT;
    pub const PF_SIP: ::c_int =  AF_SIP;
    pub const PF_IPX: ::c_int =  AF_IPX;
    pub const PF_RTIP: ::c_int =  pseudo_AF_RTIP;
    pub const PF_PIP: ::c_int =  pseudo_AF_PIP;
    pub const PF_ISDN: ::c_int =  AF_ISDN;
    pub const PF_KEY: ::c_int =  pseudo_AF_KEY;
    pub const PF_INET6: ::c_int = AF_INET6;
    pub const PF_NATM: ::c_int =  AF_NATM;
    pub const PF_SYSTEM: ::c_int = AF_SYSTEM;
    pub const PF_NETBIOS: ::c_int = AF_NETBIOS;
    pub const PF_PPP: ::c_int =  AF_PPP;
    #[doc(hidden)]
    pub const PF_MAX: ::c_int =  AF_MAX;

    #[doc(hidden)]
    pub const NET_MAXID: ::c_int = AF_MAX;

    pub const NET_RT_DUMP: ::c_int = 1;
    pub const NET_RT_FLAGS: ::c_int = 2;
    pub const NET_RT_IFLIST: ::c_int = 3;
    #[doc(hidden)]
    pub const NET_RT_MAXID: ::c_int = 10;

    pub const SOMAXCONN: ::c_int = 128;

    pub const SOCK_MAXADDRLEN: ::c_int = 255;

    pub const SOCK_STREAM: ::c_int = 1;
    pub const SOCK_DGRAM: ::c_int = 2;
    pub const SOCK_RAW: ::c_int = 3;
    pub const SOCK_RDM: ::c_int = 4;
    pub const SOCK_SEQPACKET: ::c_int = 5;
    pub const IP_TTL: ::c_int = 4;
    pub const IP_HDRINCL: ::c_int = 2;
    pub const IP_ADD_MEMBERSHIP: ::c_int = 12;
    pub const IP_DROP_MEMBERSHIP: ::c_int = 13;
    pub const IPV6_JOIN_GROUP: ::c_int = 12;
    pub const IPV6_LEAVE_GROUP: ::c_int = 13;

    pub const TCP_NODELAY: ::c_int = 0x01;
    pub const TCP_KEEPALIVE: ::c_int = 0x10;

    pub const SOL_LOCAL: ::c_int = 0;

    pub const LOCAL_PEERCRED: ::c_int = 0x001;
    pub const LOCAL_PEERPID: ::c_int = 0x002;
    pub const LOCAL_PEEREPID: ::c_int = 0x003;
    pub const LOCAL_PEERUUID: ::c_int = 0x004;
    pub const LOCAL_PEEREUUID: ::c_int = 0x005;

    pub const SOL_SOCKET: ::c_int = 0xffff;

    pub const SO_DEBUG: ::c_int = 0x01;
    pub const SO_ACCEPTCONN: ::c_int = 0x0002;
    pub const SO_REUSEADDR: ::c_int = 0x0004;
    pub const SO_KEEPALIVE: ::c_int = 0x0008;
    pub const SO_DONTROUTE: ::c_int = 0x0010;
    pub const SO_BROADCAST: ::c_int = 0x0020;
    pub const SO_USELOOPBACK: ::c_int = 0x0040;
    pub const SO_LINGER: ::c_int = 0x0080;
    pub const SO_OOBINLINE: ::c_int = 0x0100;
    pub const SO_REUSEPORT: ::c_int = 0x0200;
    pub const SO_TIMESTAMP: ::c_int = 0x0400;
    pub const SO_TIMESTAMP_MONOTONIC: ::c_int = 0x0800;
    pub const SO_DONTTRUNC: ::c_int = 0x2000;
    pub const SO_WANTMORE: ::c_int = 0x4000;
    pub const SO_WANTOOBFLAG: ::c_int = 0x8000;
    pub const SO_SNDBUF: ::c_int = 0x1001;
    pub const SO_RCVBUF: ::c_int = 0x1002;
    pub const SO_SNDLOWAT: ::c_int = 0x1003;
    pub const SO_RCVLOWAT: ::c_int = 0x1004;
    pub const SO_SNDTIMEO: ::c_int = 0x1005;
    pub const SO_RCVTIMEO: ::c_int = 0x1006;
    pub const SO_ERROR: ::c_int = 0x1007;
    pub const SO_TYPE: ::c_int = 0x1008;
    pub const SO_LABEL: ::c_int = 0x1010;
    pub const SO_PEERLABEL: ::c_int = 0x1011;
    pub const SO_NREAD: ::c_int = 0x1020;
    pub const SO_NKE: ::c_int = 0x1021;
    pub const SO_NOSIGPIPE: ::c_int = 0x1022;
    pub const SO_NOADDRERR: ::c_int = 0x1023;
    pub const SO_NWRITE: ::c_int = 0x1024;
    pub const SO_REUSESHAREUID: ::c_int = 0x1025;
    pub const SO_NOTIFYCONFLICT: ::c_int = 0x1026;
    pub const SO_RANDOMPORT: ::c_int = 0x1082;
    pub const SO_NP_EXTENSIONS: ::c_int = 0x1083;

    pub const MSG_OOB: ::c_int =  0x1;
    pub const MSG_PEEK: ::c_int = 0x2;
    pub const MSG_DONTROUTE: ::c_int = 0x4;
    pub const MSG_EOR: ::c_int =  0x8;
    pub const MSG_TRUNC: ::c_int = 0x10;
    pub const MSG_CTRUNC: ::c_int = 0x20;
    pub const MSG_WAITALL: ::c_int = 0x40;
    pub const MSG_DONTWAIT: ::c_int = 0x80;
    pub const MSG_EOF: ::c_int =  0x100;
    pub const MSG_FLUSH: ::c_int = 0x400;
    pub const MSG_HOLD: ::c_int = 0x800;
    pub const MSG_SEND: ::c_int = 0x1000;
    pub const MSG_HAVEMORE: ::c_int = 0x2000;
    pub const MSG_RCVMORE: ::c_int = 0x4000;
    // pub const MSG_COMPAT: ::c_int = 0x8000;

    pub const SCM_TIMESTAMP: ::c_int = 0x02;
    pub const SCM_CREDS: ::c_int = 0x03;

    // https://github.com/aosm/xnu/blob/master/bsd/net/if.h#L140-L156
    pub const IFF_UP: ::c_int          = 0x1;  // interface is up
    pub const IFF_BROADCAST: ::c_int   = 0x2;  // broadcast address valid
    pub const IFF_DEBUG: ::c_int       = 0x4;  // turn on debugging
    pub const IFF_LOOPBACK: ::c_int    = 0x8;  // is a loopback net
    pub const IFF_POINTOPOINT: ::c_int = 0x10; // interface is point-to-point link
    pub const IFF_NOTRAILERS: ::c_int  = 0x20; // obsolete: avoid use of trailers
    pub const IFF_RUNNING: ::c_int     = 0x40; // resources allocated
    pub const IFF_NOARP: ::c_int       = 0x80; // no address resolution protocol
    pub const IFF_PROMISC: ::c_int     = 0x100;// receive all packets
    pub const IFF_ALLMULTI: ::c_int    = 0x200;// receive all multicast packets
    pub const IFF_OACTIVE: ::c_int     = 0x400;// transmission in progress
    pub const IFF_SIMPLEX: ::c_int     = 0x800;// can't hear own transmissions
    pub const IFF_LINK0: ::c_int       = 0x1000;// per link layer defined bit
    pub const IFF_LINK1: ::c_int   = 0x2000;// per link layer defined bit
    pub const IFF_LINK2: ::c_int   = 0x4000;// per link layer defined bit
    pub const IFF_ALTPHYS: ::c_int = IFF_LINK2;// use alternate physical connection
    pub const IFF_MULTICAST: ::c_int = 0x8000;// supports multicast

    pub const SHUT_RD: ::c_int = 0;
    pub const SHUT_WR: ::c_int = 1;
    pub const SHUT_RDWR: ::c_int = 2;

    pub const LOCK_SH: ::c_int = 1;
    pub const LOCK_EX: ::c_int = 2;
    pub const LOCK_NB: ::c_int = 4;
    pub const LOCK_UN: ::c_int = 8;

    pub const MAP_COPY: ::c_int = 0x0002;
    pub const MAP_RENAME: ::c_int = 0x0020;
    pub const MAP_NORESERVE: ::c_int = 0x0040;
    pub const MAP_NOEXTEND: ::c_int = 0x0100;
    pub const MAP_HASSEMAPHORE: ::c_int = 0x0200;
    pub const MAP_NOCACHE: ::c_int = 0x0400;
    pub const MAP_JIT: ::c_int = 0x0800;

    pub const _SC_ARG_MAX: ::c_int = 1;
    pub const _SC_CHILD_MAX: ::c_int = 2;
    pub const _SC_CLK_TCK: ::c_int = 3;
    pub const _SC_NGROUPS_MAX: ::c_int = 4;
    pub const _SC_OPEN_MAX: ::c_int = 5;
    pub const _SC_JOB_CONTROL: ::c_int = 6;
    pub const _SC_SAVED_IDS: ::c_int = 7;
    pub const _SC_VERSION: ::c_int = 8;
    pub const _SC_BC_BASE_MAX: ::c_int = 9;
    pub const _SC_BC_DIM_MAX: ::c_int = 10;
    pub const _SC_BC_SCALE_MAX: ::c_int = 11;
    pub const _SC_BC_STRING_MAX: ::c_int = 12;
    pub const _SC_COLL_WEIGHTS_MAX: ::c_int = 13;
    pub const _SC_EXPR_NEST_MAX: ::c_int = 14;
    pub const _SC_LINE_MAX: ::c_int = 15;
    pub const _SC_RE_DUP_MAX: ::c_int = 16;
    pub const _SC_2_VERSION: ::c_int = 17;
    pub const _SC_2_C_BIND: ::c_int = 18;
    pub const _SC_2_C_DEV: ::c_int = 19;
    pub const _SC_2_CHAR_TERM: ::c_int = 20;
    pub const _SC_2_FORT_DEV: ::c_int = 21;
    pub const _SC_2_FORT_RUN: ::c_int = 22;
    pub const _SC_2_LOCALEDEF: ::c_int = 23;
    pub const _SC_2_SW_DEV: ::c_int = 24;
    pub const _SC_2_UPE: ::c_int = 25;
    pub const _SC_STREAM_MAX: ::c_int = 26;
    pub const _SC_TZNAME_MAX: ::c_int = 27;
    pub const _SC_ASYNCHRONOUS_IO: ::c_int = 28;
    pub const _SC_PAGESIZE: ::c_int = 29;
    pub const _SC_MEMLOCK: ::c_int = 30;
    pub const _SC_MEMLOCK_RANGE: ::c_int = 31;
    pub const _SC_MEMORY_PROTECTION: ::c_int = 32;
    pub const _SC_MESSAGE_PASSING: ::c_int = 33;
    pub const _SC_PRIORITIZED_IO: ::c_int = 34;
    pub const _SC_PRIORITY_SCHEDULING: ::c_int = 35;
    pub const _SC_REALTIME_SIGNALS: ::c_int = 36;
    pub const _SC_SEMAPHORES: ::c_int = 37;
    pub const _SC_FSYNC: ::c_int = 38;
    pub const _SC_SHARED_MEMORY_OBJECTS: ::c_int = 39;
    pub const _SC_SYNCHRONIZED_IO: ::c_int = 40;
    pub const _SC_TIMERS: ::c_int = 41;
    pub const _SC_AIO_LISTIO_MAX: ::c_int = 42;
    pub const _SC_AIO_MAX: ::c_int = 43;
    pub const _SC_AIO_PRIO_DELTA_MAX: ::c_int = 44;
    pub const _SC_DELAYTIMER_MAX: ::c_int = 45;
    pub const _SC_MQ_OPEN_MAX: ::c_int = 46;
    pub const _SC_MAPPED_FILES: ::c_int = 47;
    pub const _SC_RTSIG_MAX: ::c_int = 48;
    pub const _SC_SEM_NSEMS_MAX: ::c_int = 49;
    pub const _SC_SEM_VALUE_MAX: ::c_int = 50;
    pub const _SC_SIGQUEUE_MAX: ::c_int = 51;
    pub const _SC_TIMER_MAX: ::c_int = 52;
    pub const _SC_NPROCESSORS_CONF: ::c_int = 57;
    pub const _SC_NPROCESSORS_ONLN: ::c_int = 58;
    pub const _SC_2_PBS: ::c_int = 59;
    pub const _SC_2_PBS_ACCOUNTING: ::c_int = 60;
    pub const _SC_2_PBS_CHECKPOINT: ::c_int = 61;
    pub const _SC_2_PBS_LOCATE: ::c_int = 62;
    pub const _SC_2_PBS_MESSAGE: ::c_int = 63;
    pub const _SC_2_PBS_TRACK: ::c_int = 64;
    pub const _SC_ADVISORY_INFO: ::c_int = 65;
    pub const _SC_BARRIERS: ::c_int = 66;
    pub const _SC_CLOCK_SELECTION: ::c_int = 67;
    pub const _SC_CPUTIME: ::c_int = 68;
    pub const _SC_FILE_LOCKING: ::c_int = 69;
    pub const _SC_HOST_NAME_MAX: ::c_int = 72;
    pub const _SC_MONOTONIC_CLOCK: ::c_int = 74;
    pub const _SC_READER_WRITER_LOCKS: ::c_int = 76;
    pub const _SC_REGEXP: ::c_int = 77;
    pub const _SC_SHELL: ::c_int = 78;
    pub const _SC_SPAWN: ::c_int = 79;
    pub const _SC_SPIN_LOCKS: ::c_int = 80;
    pub const _SC_SPORADIC_SERVER: ::c_int = 81;
    pub const _SC_THREAD_CPUTIME: ::c_int = 84;
    pub const _SC_THREAD_SPORADIC_SERVER: ::c_int = 92;
    pub const _SC_TIMEOUTS: ::c_int = 95;
    pub const _SC_TRACE: ::c_int = 97;
    pub const _SC_TRACE_EVENT_FILTER: ::c_int = 98;
    pub const _SC_TRACE_INHERIT: ::c_int = 99;
    pub const _SC_TRACE_LOG: ::c_int = 100;
    pub const _SC_TYPED_MEMORY_OBJECTS: ::c_int = 102;
    pub const _SC_V6_ILP32_OFF32: ::c_int = 103;
    pub const _SC_V6_ILP32_OFFBIG: ::c_int = 104;
    pub const _SC_V6_LP64_OFF64: ::c_int = 105;
    pub const _SC_V6_LPBIG_OFFBIG: ::c_int = 106;
    pub const _SC_IPV6: ::c_int = 118;
    pub const _SC_RAW_SOCKETS: ::c_int = 119;
    pub const _SC_SYMLOOP_MAX: ::c_int = 120;
    pub const _SC_PAGE_SIZE: ::c_int = _SC_PAGESIZE;
    pub const _SC_XOPEN_STREAMS: ::c_int = 114;
    pub const _SC_XBS5_ILP32_OFF32: ::c_int = 122;
    pub const _SC_XBS5_ILP32_OFFBIG: ::c_int = 123;
    pub const _SC_XBS5_LP64_OFF64: ::c_int = 124;
    pub const _SC_XBS5_LPBIG_OFFBIG: ::c_int = 125;
    pub const _SC_SS_REPL_MAX: ::c_int = 126;
    pub const _SC_TRACE_EVENT_NAME_MAX: ::c_int = 127;
    pub const _SC_TRACE_NAME_MAX: ::c_int = 128;
    pub const _SC_TRACE_SYS_MAX: ::c_int = 129;
    pub const _SC_TRACE_USER_EVENT_MAX: ::c_int = 130;
    pub const _SC_PASS_MAX: ::c_int = 131;

    pub const PTHREAD_MUTEX_NORMAL: ::c_int = 0;
    pub const PTHREAD_MUTEX_ERRORCHECK: ::c_int = 1;
    pub const PTHREAD_MUTEX_RECURSIVE: ::c_int = 2;
    pub const PTHREAD_MUTEX_DEFAULT: ::c_int = PTHREAD_MUTEX_NORMAL;
    pub const _PTHREAD_MUTEX_SIG_init: ::c_long = 0x32AAABA7;
    pub const _PTHREAD_COND_SIG_init: ::c_long = 0x3CB0B1BB;
    pub const _PTHREAD_RWLOCK_SIG_init: ::c_long = 0x2DA8B3B4;
    pub const PTHREAD_MUTEX_INITIALIZER: pthread_mutex_t = pthread_mutex_t {
        __sig: _PTHREAD_MUTEX_SIG_init,
        __opaque: [0; __PTHREAD_MUTEX_SIZE__],
    };
    pub const PTHREAD_COND_INITIALIZER: pthread_cond_t = pthread_cond_t {
        __sig: _PTHREAD_COND_SIG_init,
        __opaque: [0; __PTHREAD_COND_SIZE__],
    };
    pub const PTHREAD_RWLOCK_INITIALIZER: pthread_rwlock_t = pthread_rwlock_t {
        __sig: _PTHREAD_RWLOCK_SIG_init,
        __opaque: [0; __PTHREAD_RWLOCK_SIZE__],
    };

    pub const SIGSTKSZ: ::size_t = 131072;

    pub const FD_SETSIZE: usize = 1024;

    pub const ST_NOSUID: ::c_ulong = 2;

    pub const EVFILT_READ: ::int16_t = -1;
    pub const EVFILT_WRITE: ::int16_t = -2;
    pub const EVFILT_AIO: ::int16_t = -3;
    pub const EVFILT_VNODE: ::int16_t = -4;
    pub const EVFILT_PROC: ::int16_t = -5;
    pub const EVFILT_SIGNAL: ::int16_t = -6;
    pub const EVFILT_TIMER: ::int16_t = -7;
    pub const EVFILT_MACHPORT: ::int16_t = -8;
    pub const EVFILT_FS: ::int16_t = -9;
    pub const EVFILT_USER: ::int16_t = -10;
    pub const EVFILT_VM: ::int16_t = -12;

    pub const EV_ADD: ::uint16_t = 0x1;
    pub const EV_DELETE: ::uint16_t = 0x2;
    pub const EV_ENABLE: ::uint16_t = 0x4;
    pub const EV_DISABLE: ::uint16_t = 0x8;
    pub const EV_ONESHOT: ::uint16_t = 0x10;
    pub const EV_CLEAR: ::uint16_t = 0x20;
    pub const EV_RECEIPT: ::uint16_t = 0x40;
    pub const EV_DISPATCH: ::uint16_t = 0x80;
    pub const EV_FLAG0: ::uint16_t = 0x1000;
    pub const EV_POLL: ::uint16_t = 0x1000;
    pub const EV_FLAG1: ::uint16_t = 0x2000;
    pub const EV_OOBAND: ::uint16_t = 0x2000;
    pub const EV_ERROR: ::uint16_t = 0x4000;
    pub const EV_EOF: ::uint16_t = 0x8000;
    pub const EV_SYSFLAGS: ::uint16_t = 0xf000;

    pub const NOTE_TRIGGER: ::uint32_t = 0x01000000;
    pub const NOTE_FFNOP: ::uint32_t = 0x00000000;
    pub const NOTE_FFAND: ::uint32_t = 0x40000000;
    pub const NOTE_FFOR: ::uint32_t = 0x80000000;
    pub const NOTE_FFCOPY: ::uint32_t = 0xc0000000;
    pub const NOTE_FFCTRLMASK: ::uint32_t = 0xc0000000;
    pub const NOTE_FFLAGSMASK: ::uint32_t = 0x00ffffff;
    pub const NOTE_LOWAT: ::uint32_t = 0x00000001;
    pub const NOTE_DELETE: ::uint32_t = 0x00000001;
    pub const NOTE_WRITE: ::uint32_t = 0x00000002;
    pub const NOTE_EXTEND: ::uint32_t = 0x00000004;
    pub const NOTE_ATTRIB: ::uint32_t = 0x00000008;
    pub const NOTE_LINK: ::uint32_t = 0x00000010;
    pub const NOTE_RENAME: ::uint32_t = 0x00000020;
    pub const NOTE_REVOKE: ::uint32_t = 0x00000040;
    pub const NOTE_NONE: ::uint32_t = 0x00000080;
    pub const NOTE_EXIT: ::uint32_t = 0x80000000;
    pub const NOTE_FORK: ::uint32_t = 0x40000000;
    pub const NOTE_EXEC: ::uint32_t = 0x20000000;
    pub const NOTE_REAP: ::uint32_t = 0x10000000;
    pub const NOTE_SIGNAL: ::uint32_t = 0x08000000;
    pub const NOTE_EXITSTATUS: ::uint32_t = 0x04000000;
    pub const NOTE_EXIT_DETAIL: ::uint32_t = 0x02000000;
    pub const NOTE_PDATAMASK: ::uint32_t = 0x000fffff;
    pub const NOTE_PCTRLMASK: ::uint32_t = 0xfff00000;
    pub const NOTE_EXIT_REPARENTED: ::uint32_t = 0x00080000;
    pub const NOTE_EXIT_DETAIL_MASK: ::uint32_t = 0x00070000;
    pub const NOTE_EXIT_DECRYPTFAIL: ::uint32_t = 0x00010000;
    pub const NOTE_EXIT_MEMORY: ::uint32_t = 0x00020000;
    pub const NOTE_EXIT_CSERROR: ::uint32_t = 0x00040000;
    pub const NOTE_VM_PRESSURE: ::uint32_t = 0x80000000;
    pub const NOTE_VM_PRESSURE_TERMINATE: ::uint32_t = 0x40000000;
    pub const NOTE_VM_PRESSURE_SUDDEN_TERMINATE: ::uint32_t = 0x20000000;
    pub const NOTE_VM_ERROR: ::uint32_t = 0x10000000;
    pub const NOTE_SECONDS: ::uint32_t = 0x00000001;
    pub const NOTE_USECONDS: ::uint32_t = 0x00000002;
    pub const NOTE_NSECONDS: ::uint32_t = 0x00000004;
    pub const NOTE_ABSOLUTE: ::uint32_t = 0x00000008;
    pub const NOTE_LEEWAY: ::uint32_t = 0x00000010;
    pub const NOTE_CRITICAL: ::uint32_t = 0x00000020;
    pub const NOTE_BACKGROUND: ::uint32_t = 0x00000040;
    pub const NOTE_TRACK: ::uint32_t = 0x00000001;
    pub const NOTE_TRACKERR: ::uint32_t = 0x00000002;
    pub const NOTE_CHILD: ::uint32_t = 0x00000004;

    pub const OCRNL: ::c_int = 0x00000010;
    pub const ONOCR: ::c_int = 0x00000020;
    pub const ONLRET: ::c_int = 0x00000040;
    pub const OFILL: ::c_int = 0x00000080;
    pub const NLDLY: ::c_int = 0x00000300;
    pub const TABDLY: ::c_int = 0x00000c04;
    pub const CRDLY: ::c_int = 0x00003000;
    pub const FFDLY: ::c_int = 0x00004000;
    pub const BSDLY: ::c_int = 0x00008000;
    pub const VTDLY: ::c_int = 0x00010000;
    pub const OFDEL: ::c_int = 0x00020000;

    pub const NL0: ::c_int  = 0x00000000;
    pub const NL1: ::c_int  = 0x00000100;
    pub const TAB0: ::c_int = 0x00000000;
    pub const TAB1: ::c_int = 0x00000400;
    pub const TAB2: ::c_int = 0x00000800;
    pub const CR0: ::c_int  = 0x00000000;
    pub const CR1: ::c_int  = 0x00001000;
    pub const CR2: ::c_int  = 0x00002000;
    pub const CR3: ::c_int  = 0x00003000;
    pub const FF0: ::c_int  = 0x00000000;
    pub const FF1: ::c_int  = 0x00004000;
    pub const BS0: ::c_int  = 0x00000000;
    pub const BS1: ::c_int  = 0x00008000;
    pub const TAB3: ::c_int = 0x00000004;
    pub const VT0: ::c_int  = 0x00000000;
    pub const VT1: ::c_int  = 0x00010000;
    pub const IUTF8: ::tcflag_t = 0x00004000;
    pub const CRTSCTS: ::tcflag_t = 0x00030000;

    pub const NI_MAXHOST: ::socklen_t = 1025;

    pub const Q_GETQUOTA: ::c_int = 0x300;
    pub const Q_SETQUOTA: ::c_int = 0x400;

    pub const RTLD_LOCAL: ::c_int = 0x4;
    pub const RTLD_FIRST: ::c_int = 0x100;
    pub const RTLD_NODELETE: ::c_int = 0x80;
    pub const RTLD_NOLOAD: ::c_int = 0x10;
    pub const RTLD_GLOBAL: ::c_int = 0x8;

    pub const _WSTOPPED: ::c_int = 0o177;

    pub const LOG_NETINFO: ::c_int = 12 << 3;
    pub const LOG_REMOTEAUTH: ::c_int = 13 << 3;
    pub const LOG_INSTALL: ::c_int = 14 << 3;
    pub const LOG_RAS: ::c_int = 15 << 3;
    pub const LOG_LAUNCHD: ::c_int = 24 << 3;
    pub const LOG_NFACILITIES: ::c_int = 25;

    pub const CTLTYPE: ::c_int = 0xf;
    pub const CTLTYPE_NODE: ::c_int = 1;
    pub const CTLTYPE_INT: ::c_int = 2;
    pub const CTLTYPE_STRING: ::c_int = 3;
    pub const CTLTYPE_QUAD: ::c_int = 4;
    pub const CTLTYPE_OPAQUE: ::c_int = 5;
    pub const CTLTYPE_STRUCT: ::c_int = CTLTYPE_OPAQUE;
    pub const CTLFLAG_RD: ::c_int = 0x80000000;
    pub const CTLFLAG_WR: ::c_int = 0x40000000;
    pub const CTLFLAG_RW: ::c_int = CTLFLAG_RD | CTLFLAG_WR;
    pub const CTLFLAG_NOLOCK: ::c_int = 0x20000000;
    pub const CTLFLAG_ANYBODY: ::c_int = 0x10000000;
    pub const CTLFLAG_SECURE: ::c_int = 0x08000000;
    pub const CTLFLAG_MASKED: ::c_int = 0x04000000;
    pub const CTLFLAG_NOAUTO: ::c_int = 0x02000000;
    pub const CTLFLAG_KERN: ::c_int = 0x01000000;
    pub const CTLFLAG_LOCKED: ::c_int = 0x00800000;
    pub const CTLFLAG_OID2: ::c_int = 0x00400000;
    pub const CTL_UNSPEC: ::c_int = 0;
    pub const CTL_KERN: ::c_int = 1;
    pub const CTL_VM: ::c_int = 2;
    pub const CTL_VFS: ::c_int = 3;
    pub const CTL_NET: ::c_int = 4;
    pub const CTL_DEBUG: ::c_int = 5;
    pub const CTL_HW: ::c_int = 6;
    pub const CTL_MACHDEP: ::c_int = 7;
    pub const CTL_USER: ::c_int = 8;
    pub const CTL_MAXID: ::c_int = 9;
    pub const KERN_OSTYPE: ::c_int = 1;
    pub const KERN_OSRELEASE: ::c_int = 2;
    pub const KERN_OSREV: ::c_int = 3;
    pub const KERN_VERSION: ::c_int = 4;
    pub const KERN_MAXVNODES: ::c_int = 5;
    pub const KERN_MAXPROC: ::c_int = 6;
    pub const KERN_MAXFILES: ::c_int = 7;
    pub const KERN_ARGMAX: ::c_int = 8;
    pub const KERN_SECURELVL: ::c_int = 9;
    pub const KERN_HOSTNAME: ::c_int = 10;
    pub const KERN_HOSTID: ::c_int = 11;
    pub const KERN_CLOCKRATE: ::c_int = 12;
    pub const KERN_VNODE: ::c_int = 13;
    pub const KERN_PROC: ::c_int = 14;
    pub const KERN_FILE: ::c_int = 15;
    pub const KERN_PROF: ::c_int = 16;
    pub const KERN_POSIX1: ::c_int = 17;
    pub const KERN_NGROUPS: ::c_int = 18;
    pub const KERN_JOB_CONTROL: ::c_int = 19;
    pub const KERN_SAVED_IDS: ::c_int = 20;
    pub const KERN_BOOTTIME: ::c_int = 21;
    pub const KERN_NISDOMAINNAME: ::c_int = 22;
    pub const KERN_DOMAINNAME: ::c_int = KERN_NISDOMAINNAME;
    pub const KERN_MAXPARTITIONS: ::c_int = 23;
    pub const KERN_KDEBUG: ::c_int = 24;
    pub const KERN_UPDATEINTERVAL: ::c_int = 25;
    pub const KERN_OSRELDATE: ::c_int = 26;
    pub const KERN_NTP_PLL: ::c_int = 27;
    pub const KERN_BOOTFILE: ::c_int = 28;
    pub const KERN_MAXFILESPERPROC: ::c_int = 29;
    pub const KERN_MAXPROCPERUID: ::c_int = 30;
    pub const KERN_DUMPDEV: ::c_int = 31;
    pub const KERN_IPC: ::c_int = 32;
    pub const KERN_DUMMY: ::c_int = 33;
    pub const KERN_PS_STRINGS: ::c_int = 34;
    pub const KERN_USRSTACK32: ::c_int = 35;
    pub const KERN_LOGSIGEXIT: ::c_int = 36;
    pub const KERN_SYMFILE: ::c_int = 37;
    pub const KERN_PROCARGS: ::c_int = 38;
    pub const KERN_NETBOOT: ::c_int = 40;
    pub const KERN_SYSV: ::c_int = 42;
    pub const KERN_AFFINITY: ::c_int = 43;
    pub const KERN_TRANSLATE: ::c_int = 44;
    pub const KERN_CLASSIC: ::c_int = KERN_TRANSLATE;
    pub const KERN_EXEC: ::c_int = 45;
    pub const KERN_CLASSICHANDLER: ::c_int = KERN_EXEC;
    pub const KERN_AIOMAX: ::c_int = 46;
    pub const KERN_AIOPROCMAX: ::c_int = 47;
    pub const KERN_AIOTHREADS: ::c_int = 48;
    pub const KERN_COREFILE: ::c_int = 50;
    pub const KERN_COREDUMP: ::c_int = 51;
    pub const KERN_SUGID_COREDUMP: ::c_int = 52;
    pub const KERN_PROCDELAYTERM: ::c_int = 53;
    pub const KERN_SHREG_PRIVATIZABLE: ::c_int = 54;
    pub const KERN_LOW_PRI_WINDOW: ::c_int = 56;
    pub const KERN_LOW_PRI_DELAY: ::c_int = 57;
    pub const KERN_POSIX: ::c_int = 58;
    pub const KERN_USRSTACK64: ::c_int = 59;
    pub const KERN_NX_PROTECTION: ::c_int = 60;
    pub const KERN_TFP: ::c_int = 61;
    pub const KERN_PROCNAME: ::c_int = 62;
    pub const KERN_THALTSTACK: ::c_int = 63;
    pub const KERN_SPECULATIVE_READS: ::c_int = 64;
    pub const KERN_OSVERSION: ::c_int = 65;
    pub const KERN_SAFEBOOT: ::c_int = 66;
    pub const KERN_RAGEVNODE: ::c_int = 68;
    pub const KERN_TTY: ::c_int = 69;
    pub const KERN_CHECKOPENEVT: ::c_int = 70;
    pub const KERN_THREADNAME: ::c_int = 71;
    pub const KERN_MAXID: ::c_int = 72;
    pub const KERN_RAGE_PROC: ::c_int = 1;
    pub const KERN_RAGE_THREAD: ::c_int = 2;
    pub const KERN_UNRAGE_PROC: ::c_int = 3;
    pub const KERN_UNRAGE_THREAD: ::c_int = 4;
    pub const KERN_OPENEVT_PROC: ::c_int = 1;
    pub const KERN_UNOPENEVT_PROC: ::c_int = 2;
    pub const KERN_TFP_POLICY: ::c_int = 1;
    pub const KERN_TFP_POLICY_DENY: ::c_int = 0;
    pub const KERN_TFP_POLICY_DEFAULT: ::c_int = 2;
    pub const KERN_KDEFLAGS: ::c_int = 1;
    pub const KERN_KDDFLAGS: ::c_int = 2;
    pub const KERN_KDENABLE: ::c_int = 3;
    pub const KERN_KDSETBUF: ::c_int = 4;
    pub const KERN_KDGETBUF: ::c_int = 5;
    pub const KERN_KDSETUP: ::c_int = 6;
    pub const KERN_KDREMOVE: ::c_int = 7;
    pub const KERN_KDSETREG: ::c_int = 8;
    pub const KERN_KDGETREG: ::c_int = 9;
    pub const KERN_KDREADTR: ::c_int = 10;
    pub const KERN_KDPIDTR: ::c_int = 11;
    pub const KERN_KDTHRMAP: ::c_int = 12;
    pub const KERN_KDPIDEX: ::c_int = 14;
    pub const KERN_KDSETRTCDEC: ::c_int = 15;
    pub const KERN_KDGETENTROPY: ::c_int = 16;
    pub const KERN_KDWRITETR: ::c_int = 17;
    pub const KERN_KDWRITEMAP: ::c_int = 18;
    pub const KERN_KDENABLE_BG_TRACE: ::c_int = 19;
    pub const KERN_KDDISABLE_BG_TRACE: ::c_int = 20;
    pub const KERN_KDREADCURTHRMAP: ::c_int = 21;
    pub const KERN_KDSET_TYPEFILTER: ::c_int = 22;
    pub const KERN_KDBUFWAIT: ::c_int = 23;
    pub const KERN_KDCPUMAP: ::c_int = 24;
    pub const KERN_PROC_ALL: ::c_int = 0;
    pub const KERN_PROC_PID: ::c_int = 1;
    pub const KERN_PROC_PGRP: ::c_int = 2;
    pub const KERN_PROC_SESSION: ::c_int = 3;
    pub const KERN_PROC_TTY: ::c_int = 4;
    pub const KERN_PROC_UID: ::c_int = 5;
    pub const KERN_PROC_RUID: ::c_int = 6;
    pub const KERN_PROC_LCID: ::c_int = 7;
    pub const KIPC_MAXSOCKBUF: ::c_int = 1;
    pub const KIPC_SOCKBUF_WASTE: ::c_int = 2;
    pub const KIPC_SOMAXCONN: ::c_int = 3;
    pub const KIPC_MAX_LINKHDR: ::c_int = 4;
    pub const KIPC_MAX_PROTOHDR: ::c_int = 5;
    pub const KIPC_MAX_HDR: ::c_int = 6;
    pub const KIPC_MAX_DATALEN: ::c_int = 7;
    pub const KIPC_MBSTAT: ::c_int = 8;
    pub const KIPC_NMBCLUSTERS: ::c_int = 9;
    pub const KIPC_SOQLIMITCOMPAT: ::c_int = 10;
    pub const VM_METER: ::c_int = 1;
    pub const VM_LOADAVG: ::c_int = 2;
    pub const VM_MACHFACTOR: ::c_int = 4;
    pub const VM_SWAPUSAGE: ::c_int = 5;
    pub const VM_MAXID: ::c_int = 6;
    pub const HW_MACHINE: ::c_int = 1;
    pub const HW_MODEL: ::c_int = 2;
    pub const HW_NCPU: ::c_int = 3;
    pub const HW_BYTEORDER: ::c_int = 4;
    pub const HW_PHYSMEM: ::c_int = 5;
    pub const HW_USERMEM: ::c_int = 6;
    pub const HW_PAGESIZE: ::c_int = 7;
    pub const HW_DISKNAMES: ::c_int = 8;
    pub const HW_DISKSTATS: ::c_int = 9;
    pub const HW_EPOCH: ::c_int = 10;
    pub const HW_FLOATINGPT: ::c_int = 11;
    pub const HW_MACHINE_ARCH: ::c_int = 12;
    pub const HW_VECTORUNIT: ::c_int = 13;
    pub const HW_BUS_FREQ: ::c_int = 14;
    pub const HW_CPU_FREQ: ::c_int = 15;
    pub const HW_CACHELINE: ::c_int = 16;
    pub const HW_L1ICACHESIZE: ::c_int = 17;
    pub const HW_L1DCACHESIZE: ::c_int = 18;
    pub const HW_L2SETTINGS: ::c_int = 19;
    pub const HW_L2CACHESIZE: ::c_int = 20;
    pub const HW_L3SETTINGS: ::c_int = 21;
    pub const HW_L3CACHESIZE: ::c_int = 22;
    pub const HW_TB_FREQ: ::c_int = 23;
    pub const HW_MEMSIZE: ::c_int = 24;
    pub const HW_AVAILCPU: ::c_int = 25;
    pub const HW_MAXID: ::c_int = 26;
    pub const USER_CS_PATH: ::c_int = 1;
    pub const USER_BC_BASE_MAX: ::c_int = 2;
    pub const USER_BC_DIM_MAX: ::c_int = 3;
    pub const USER_BC_SCALE_MAX: ::c_int = 4;
    pub const USER_BC_STRING_MAX: ::c_int = 5;
    pub const USER_COLL_WEIGHTS_MAX: ::c_int = 6;
    pub const USER_EXPR_NEST_MAX: ::c_int = 7;
    pub const USER_LINE_MAX: ::c_int = 8;
    pub const USER_RE_DUP_MAX: ::c_int = 9;
    pub const USER_POSIX2_VERSION: ::c_int = 10;
    pub const USER_POSIX2_C_BIND: ::c_int = 11;
    pub const USER_POSIX2_C_DEV: ::c_int = 12;
    pub const USER_POSIX2_CHAR_TERM: ::c_int = 13;
    pub const USER_POSIX2_FORT_DEV: ::c_int = 14;
    pub const USER_POSIX2_FORT_RUN: ::c_int = 15;
    pub const USER_POSIX2_LOCALEDEF: ::c_int = 16;
    pub const USER_POSIX2_SW_DEV: ::c_int = 17;
    pub const USER_POSIX2_UPE: ::c_int = 18;
    pub const USER_STREAM_MAX: ::c_int = 19;
    pub const USER_TZNAME_MAX: ::c_int = 20;
    pub const USER_MAXID: ::c_int = 21;
    pub const CTL_DEBUG_NAME: ::c_int = 0;
    pub const CTL_DEBUG_VALUE: ::c_int = 1;
    pub const CTL_DEBUG_MAXID: ::c_int = 20;

    pub const PRIO_DARWIN_THREAD: ::c_int = 3;
    pub const PRIO_DARWIN_PROCESS: ::c_int = 4;
    pub const PRIO_DARWIN_BG: ::c_int = 0x1000;
    pub const PRIO_DARWIN_NONUI: ::c_int = 0x1001;

    pub const SEM_FAILED: *mut sem_t = -1isize as *mut ::sem_t;

    pub const SIGEV_NONE: ::c_int = 0;
    pub const SIGEV_SIGNAL: ::c_int = 1;
    pub const SIGEV_THREAD: ::c_int = 3;

    pub const AIO_CANCELED: ::c_int = 2;
    pub const AIO_NOTCANCELED: ::c_int = 4;
    pub const AIO_ALLDONE: ::c_int = 1;
    pub const AIO_LISTIO_MAX: ::c_int = 16;
    pub const LIO_NOP: ::c_int = 0;
    pub const LIO_WRITE: ::c_int = 2;
    pub const LIO_READ: ::c_int = 1;
    pub const LIO_WAIT: ::c_int = 2;
    pub const LIO_NOWAIT: ::c_int = 1;

    pub const WEXITED: ::c_int = 0x00000004;
    pub const WSTOPPED: ::c_int = 0x00000008;
    pub const WCONTINUED: ::c_int = 0x00000010;
    pub const WNOWAIT: ::c_int = 0x00000020;

    pub const P_ALL: idtype_t = 0;
    pub const P_PID: idtype_t = 1;
    pub const P_PGID: idtype_t = 2;

    pub const XATTR_NOFOLLOW: ::c_int = 0x0001;
    pub const XATTR_CREATE: ::c_int = 0x0002;
    pub const XATTR_REPLACE: ::c_int = 0x0004;
    pub const XATTR_NOSECURITY: ::c_int = 0x0008;
    pub const XATTR_NODEFAULT: ::c_int = 0x0010;
    pub const XATTR_SHOWCOMPRESSION: ::c_int = 0x0020;

    pub const NET_RT_IFLIST2: ::c_int = 0x0006;

    // net/route.h
    pub const RTF_UP: ::c_int = 0x1;
    pub const RTF_GATEWAY: ::c_int = 0x2;
    pub const RTF_HOST: ::c_int = 0x4;
    pub const RTF_REJECT: ::c_int = 0x8;
    pub const RTF_DYNAMIC: ::c_int = 0x10;
    pub const RTF_MODIFIED: ::c_int = 0x20;
    pub const RTF_DONE: ::c_int = 0x40;
    pub const RTF_DELCLONE: ::c_int = 0x80;
    pub const RTF_CLONING: ::c_int = 0x100;
    pub const RTF_XRESOLVE: ::c_int = 0x200;
    pub const RTF_LLINFO: ::c_int = 0x400;
    pub const RTF_STATIC: ::c_int = 0x800;
    pub const RTF_BLACKHOLE: ::c_int = 0x1000;
    pub const RTF_NOIFREF: ::c_int = 0x2000;
    pub const RTF_PROTO2: ::c_int = 0x4000;
    pub const RTF_PROTO1: ::c_int = 0x8000;
    pub const RTF_PRCLONING: ::c_int = 0x10000;
    pub const RTF_WASCLONED: ::c_int = 0x20000;
    pub const RTF_PROTO3: ::c_int = 0x40000;
    pub const RTF_PINNED: ::c_int = 0x100000;
    pub const RTF_LOCAL: ::c_int = 0x200000;
    pub const RTF_BROADCAST: ::c_int = 0x400000;
    pub const RTF_MULTICAST: ::c_int = 0x800000;
    pub const RTF_IFSCOPE: ::c_int = 0x1000000;
    pub const RTF_CONDEMNED: ::c_int = 0x2000000;
    pub const RTF_IFREF: ::c_int = 0x4000000;
    pub const RTF_PROXY: ::c_int = 0x8000000;
    pub const RTF_ROUTER: ::c_int = 0x10000000;

    pub const RTM_VERSION: ::c_int = 5;

    // Message types
    pub const RTM_ADD: ::c_int = 0x1;
    pub const RTM_DELETE: ::c_int = 0x2;
    pub const RTM_CHANGE: ::c_int = 0x3;
    pub const RTM_GET: ::c_int = 0x4;
    pub const RTM_LOSING: ::c_int = 0x5;
    pub const RTM_REDIRECT: ::c_int = 0x6;
    pub const RTM_MISS: ::c_int = 0x7;
    pub const RTM_LOCK: ::c_int = 0x8;
    pub const RTM_OLDADD: ::c_int = 0x9;
    pub const RTM_OLDDEL: ::c_int = 0xa;
    pub const RTM_RESOLVE: ::c_int = 0xb;
    pub const RTM_NEWADDR: ::c_int = 0xc;
    pub const RTM_DELADDR: ::c_int = 0xd;
    pub const RTM_IFINFO: ::c_int = 0xe;
    pub const RTM_NEWMADDR: ::c_int = 0xf;
    pub const RTM_DELMADDR: ::c_int = 0x10;
    pub const RTM_IFINFO2: ::c_int = 0x12;
    pub const RTM_NEWMADDR2: ::c_int = 0x13;
    pub const RTM_GET2: ::c_int = 0x14;

    // Bitmask values for rtm_inits and rmx_locks.
    pub const RTV_MTU: ::c_int = 0x1;
    pub const RTV_HOPCOUNT: ::c_int = 0x2;
    pub const RTV_EXPIRE: ::c_int = 0x4;
    pub const RTV_RPIPE: ::c_int = 0x8;
    pub const RTV_SPIPE: ::c_int = 0x10;
    pub const RTV_SSTHRESH: ::c_int = 0x20;
    pub const RTV_RTT: ::c_int = 0x40;
    pub const RTV_RTTVAR: ::c_int = 0x80;

    // Bitmask values for rtm_addrs.
    pub const RTA_DST: ::c_int = 0x1;
    pub const RTA_GATEWAY: ::c_int = 0x2;
    pub const RTA_NETMASK: ::c_int = 0x4;
    pub const RTA_GENMASK: ::c_int = 0x8;
    pub const RTA_IFP: ::c_int = 0x10;
    pub const RTA_IFA: ::c_int = 0x20;
    pub const RTA_AUTHOR: ::c_int = 0x40;
    pub const RTA_BRD: ::c_int = 0x80;

    // Index offsets for sockaddr array for alternate internal encoding.
    pub const RTAX_DST: ::c_int = 0;
    pub const RTAX_GATEWAY: ::c_int = 1;
    pub const RTAX_NETMASK: ::c_int = 2;
    pub const RTAX_GENMASK: ::c_int = 3;
    pub const RTAX_IFP: ::c_int = 4;
    pub const RTAX_IFA: ::c_int = 5;
    pub const RTAX_AUTHOR: ::c_int = 6;
    pub const RTAX_BRD: ::c_int = 7;
    pub const RTAX_MAX: ::c_int = 8;

    pub const KERN_PROCARGS2: ::c_int = 49;

    pub const PROC_PIDTASKALLINFO: ::c_int = 2;
    pub const PROC_PIDTASKINFO: ::c_int = 4;
    pub const PROC_PIDTHREADINFO: ::c_int = 5;
    pub const MAXCOMLEN: usize = 16;
    pub const MAXTHREADNAMESIZE: usize = 64;

    pub const XUCRED_VERSION: ::c_uint = 0;

    pub const LC_SEGMENT: u32 = 0x1;
    pub const LC_SEGMENT_64: u32 = 0x19;

    pub const MH_MAGIC: u32 = 0xfeedface;
    pub const MH_MAGIC_64: u32 = 0xfeedfacf;

    // net/if_utun.h
    pub const UTUN_OPT_FLAGS: ::c_int = 1;
    pub const UTUN_OPT_IFNAME: ::c_int = 2;

    // net/bpf.h
    pub const DLT_NULL: ::c_uint = 0;         // no link-layer encapsulation
    pub const DLT_EN10MB: ::c_uint = 1;       // Ethernet (10Mb)
    pub const DLT_EN3MB: ::c_uint = 2;        // Experimental Ethernet (3Mb)
    pub const DLT_AX25: ::c_uint = 3;         // Amateur Radio AX.25
    pub const DLT_PRONET: ::c_uint = 4;       // Proteon ProNET Token Ring
    pub const DLT_CHAOS: ::c_uint = 5;        // Chaos
    pub const DLT_IEEE802: ::c_uint = 6;      // IEEE 802 Networks
    pub const DLT_ARCNET: ::c_uint = 7;       // ARCNET
    pub const DLT_SLIP: ::c_uint = 8;         // Serial Line IP
    pub const DLT_PPP: ::c_uint = 9;          // Point-to-point Protocol
    pub const DLT_FDDI: ::c_uint = 10;        // FDDI
    pub const DLT_ATM_RFC1483: ::c_uint = 11; // LLC/SNAP encapsulated atm
    pub const DLT_RAW: ::c_uint = 12;         // raw IP
    pub const DLT_LOOP: ::c_uint = 108;

    // https://github.com/apple/darwin-xnu/blob/master/bsd/net/bpf.h#L100
    // sizeof(int32_t)
    pub const BPF_ALIGNMENT: ::c_int = 4;

    pub const POSIX_SPAWN_RESETIDS: ::c_int = 0x01;
    pub const POSIX_SPAWN_SETPGROUP: ::c_int = 0x02;
    pub const POSIX_SPAWN_SETSIGDEF: ::c_int = 0x04;
    pub const POSIX_SPAWN_SETSIGMASK: ::c_int = 0x08;

    // sys/ipc.h:
    pub const IPC_CREAT: ::c_int = 0x200;
    pub const IPC_EXCL: ::c_int = 0x400;
    pub const IPC_NOWAIT: ::c_int = 0x800;
    pub const IPC_PRIVATE: key_t = 0;

    pub const IPC_RMID: ::c_int = 0;
    pub const IPC_SET: ::c_int = 1;
    pub const IPC_STAT: ::c_int = 2;

    pub const IPC_R: ::c_int = 0x100;
    pub const IPC_W: ::c_int = 0x80;
    pub const IPC_M: ::c_int = 0x1000;

    // sys/shm.h
    pub const SHM_RDONLY: ::c_int = 0x1000;
    pub const SHM_RND: ::c_int = 0x2000;
    pub const SHMLBA: ::c_int = 4096;
    pub const SHM_R: ::c_int = IPC_R;
    pub const SHM_W: ::c_int = IPC_W;

    f! {
        pub fn WSTOPSIG(status: ::c_int) -> ::c_int {
            status >> 8
        }

        pub fn _WSTATUS(status: ::c_int) -> ::c_int {
            status & 0x7f
        }

        pub fn WIFCONTINUED(status: ::c_int) -> bool {
            _WSTATUS(status) == _WSTOPPED && WSTOPSIG(status) == 0x13
        }

        pub fn WIFSIGNALED(status: ::c_int) -> bool {
            _WSTATUS(status) != _WSTOPPED && _WSTATUS(status) != 0
        }

        pub fn WIFSTOPPED(status: ::c_int) -> bool {
            _WSTATUS(status) == _WSTOPPED && WSTOPSIG(status) != 0x13
        }
    }

    extern {
        pub fn aio_read(aiocbp: *mut aiocb) -> ::c_int;
        pub fn aio_write(aiocbp: *mut aiocb) -> ::c_int;
        pub fn aio_fsync(op: ::c_int, aiocbp: *mut aiocb) -> ::c_int;
        pub fn aio_error(aiocbp: *const aiocb) -> ::c_int;
        pub fn aio_return(aiocbp: *mut aiocb) -> ::ssize_t;
        #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
                   link_name = "aio_suspend$UNIX2003")]
        pub fn aio_suspend(aiocb_list: *const *const aiocb, nitems: ::c_int,
                           timeout: *const ::timespec) -> ::c_int;
        pub fn aio_cancel(fd: ::c_int, aiocbp: *mut aiocb) -> ::c_int;
        pub fn clock_getres(clk_id: ::clockid_t, tp: *mut ::timespec) -> ::c_int;
        pub fn clock_gettime(clk_id: ::clockid_t, tp: *mut ::timespec) -> ::c_int;
        pub fn lio_listio(mode: ::c_int, aiocb_list: *const *mut aiocb,
                          nitems: ::c_int, sevp: *mut sigevent) -> ::c_int;

        pub fn dirfd(dirp: *mut ::DIR) -> ::c_int;

        pub fn lutimes(file: *const ::c_char, times: *const ::timeval) -> ::c_int;

        pub fn getutxent() -> *mut utmpx;
        pub fn getutxid(ut: *const utmpx) -> *mut utmpx;
        pub fn getutxline(ut: *const utmpx) -> *mut utmpx;
        pub fn pututxline(ut: *const utmpx) -> *mut utmpx;
        pub fn setutxent();
        pub fn endutxent();
        pub fn utmpxname(file: *const ::c_char) -> ::c_int;

        pub fn getnameinfo(sa: *const ::sockaddr,
                           salen: ::socklen_t,
                           host: *mut ::c_char,
                           hostlen: ::socklen_t,
                           serv: *mut ::c_char,
                           sevlen: ::socklen_t,
                           flags: ::c_int) -> ::c_int;
        pub fn mincore(addr: *const ::c_void, len: ::size_t,
                       vec: *mut ::c_char) -> ::c_int;
        pub fn sysctlnametomib(name: *const ::c_char,
                               mibp: *mut ::c_int,
                               sizep: *mut ::size_t)
                               -> ::c_int;
        #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
                   link_name = "mprotect$UNIX2003")]
        pub fn mprotect(addr: *mut ::c_void, len: ::size_t, prot: ::c_int)
                        -> ::c_int;
        pub fn shm_open(name: *const ::c_char, oflag: ::c_int, ...) -> ::c_int;
        pub fn shmat(shmid: ::c_int, shmaddr: *const ::c_void,
                     shmflg: ::c_int) -> *mut ::c_void;
        pub fn shmdt(shmaddr: *const ::c_void) -> ::c_int;
        #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
                   link_name = "shmctl$UNIX2003")]
        pub fn shmctl(shmid: ::c_int, cmd: ::c_int,
                      buf: *mut ::shmid_ds) -> ::c_int;
        pub fn shmget(key: key_t, size: ::size_t, shmflg: ::c_int) -> ::c_int;
        pub fn sysctl(name: *mut ::c_int,
                      namelen: ::c_uint,
                      oldp: *mut ::c_void,
                      oldlenp: *mut ::size_t,
                      newp: *mut ::c_void,
                      newlen: ::size_t)
                      -> ::c_int;
        pub fn sysctlbyname(name: *const ::c_char,
                            oldp: *mut ::c_void,
                            oldlenp: *mut ::size_t,
                            newp: *mut ::c_void,
                            newlen: ::size_t)
                            -> ::c_int;
        pub fn mach_absolute_time() -> u64;
        pub fn mach_timebase_info(info: *mut ::mach_timebase_info) -> ::c_int;
        pub fn pthread_setname_np(name: *const ::c_char) -> ::c_int;
        pub fn pthread_get_stackaddr_np(thread: ::pthread_t) -> *mut ::c_void;
        pub fn pthread_get_stacksize_np(thread: ::pthread_t) -> ::size_t;
        pub fn pthread_condattr_setpshared(attr: *mut pthread_condattr_t,
                                           pshared: ::c_int) -> ::c_int;
        pub fn pthread_condattr_getpshared(attr: *const pthread_condattr_t,
                                           pshared: *mut ::c_int) -> ::c_int;
        pub fn pthread_mutexattr_setpshared(attr: *mut pthread_mutexattr_t,
                                            pshared: ::c_int) -> ::c_int;
        pub fn pthread_mutexattr_getpshared(attr: *const pthread_mutexattr_t,
                                            pshared: *mut ::c_int) -> ::c_int;
        pub fn pthread_rwlockattr_getpshared(attr: *const pthread_rwlockattr_t,
                                             val: *mut ::c_int) -> ::c_int;
        pub fn pthread_rwlockattr_setpshared(attr: *mut pthread_rwlockattr_t,
                                             val: ::c_int) -> ::c_int;
        pub fn __error() -> *mut ::c_int;
        pub fn backtrace(buf: *mut *mut ::c_void,
                         sz: ::c_int) -> ::c_int;
        #[cfg_attr(target_os = "macos", link_name = "statfs$INODE64")]
        pub fn statfs(path: *const ::c_char, buf: *mut statfs) -> ::c_int;
        #[cfg_attr(target_os = "macos", link_name = "fstatfs$INODE64")]
        pub fn fstatfs(fd: ::c_int, buf: *mut statfs) -> ::c_int;
        pub fn kevent(kq: ::c_int,
                      changelist: *const ::kevent,
                      nchanges: ::c_int,
                      eventlist: *mut ::kevent,
                      nevents: ::c_int,
                      timeout: *const ::timespec) -> ::c_int;
        pub fn kevent64(kq: ::c_int,
                        changelist: *const ::kevent64_s,
                        nchanges: ::c_int,
                        eventlist: *mut ::kevent64_s,
                        nevents: ::c_int,
                        flags: ::c_uint,
                        timeout: *const ::timespec) -> ::c_int;
        pub fn mount(src: *const ::c_char,
                     target: *const ::c_char,
                     flags: ::c_int,
                     data: *mut ::c_void) -> ::c_int;
        pub fn ptrace(request: ::c_int,
                      pid: ::pid_t,
                      addr: *mut ::c_char,
                      data: ::c_int) -> ::c_int;
        pub fn quotactl(special: *const ::c_char,
                        cmd: ::c_int,
                        id: ::c_int,
                        data: *mut ::c_char) -> ::c_int;
        pub fn sethostname(name: *const ::c_char, len: ::c_int) -> ::c_int;
        pub fn sendfile(fd: ::c_int,
                        s: ::c_int,
                        offset: ::off_t,
                        len: *mut ::off_t,
                        hdtr: *mut ::sf_hdtr,
                        flags: ::c_int) -> ::c_int;
        pub fn openpty(amaster: *mut ::c_int,
                       aslave: *mut ::c_int,
                       name: *mut ::c_char,
                       termp: *mut termios,
                       winp: *mut ::winsize) -> ::c_int;
        pub fn forkpty(amaster: *mut ::c_int,
                       name: *mut ::c_char,
                       termp: *mut termios,
                       winp: *mut ::winsize) -> ::pid_t;
        pub fn duplocale(base: ::locale_t) -> ::locale_t;
        pub fn freelocale(loc: ::locale_t) -> ::c_int;
        pub fn localeconv_l(loc: ::locale_t) -> *mut lconv;
        pub fn newlocale(mask: ::c_int,
                         locale: *const ::c_char,
                         base: ::locale_t) -> ::locale_t;
        pub fn uselocale(loc: ::locale_t) -> ::locale_t;
        pub fn querylocale(mask: ::c_int, loc: ::locale_t) -> *const ::c_char;
        pub fn getpriority(which: ::c_int, who: ::id_t) -> ::c_int;
        pub fn setpriority(which: ::c_int, who: ::id_t, prio: ::c_int) -> ::c_int;
        pub fn getdomainname(name: *mut ::c_char, len: ::c_int) -> ::c_int;
        pub fn setdomainname(name: *const ::c_char, len: ::c_int) -> ::c_int;
        pub fn getxattr(path: *const ::c_char, name: *const ::c_char,
                        value: *mut ::c_void, size: ::size_t, position: u32,
                        flags: ::c_int) -> ::ssize_t;
        pub fn fgetxattr(filedes: ::c_int, name: *const ::c_char,
                         value: *mut ::c_void, size: ::size_t, position: u32,
                         flags: ::c_int) -> ::ssize_t;
        pub fn setxattr(path: *const ::c_char, name: *const ::c_char,
                        value: *const ::c_void, size: ::size_t, position: u32,
                        flags: ::c_int) -> ::c_int;
        pub fn fsetxattr(filedes: ::c_int, name: *const ::c_char,
                         value: *const ::c_void, size: ::size_t, position: u32,
                         flags: ::c_int) -> ::c_int;
        pub fn listxattr(path: *const ::c_char, list: *mut ::c_char,
                         size: ::size_t, flags: ::c_int) -> ::ssize_t;
        pub fn flistxattr(filedes: ::c_int, list: *mut ::c_char,
                          size: ::size_t, flags: ::c_int) -> ::ssize_t;
        pub fn removexattr(path: *const ::c_char, name: *const ::c_char,
                           flags: ::c_int) -> ::c_int;
        pub fn fremovexattr(filedes: ::c_int, name: *const ::c_char,
                            flags: ::c_int) -> ::c_int;

        pub fn getgrouplist(name: *const ::c_char,
                            basegid: ::c_int,
                            groups: *mut ::c_int,
                            ngroups: *mut ::c_int) -> ::c_int;
        pub fn initgroups(user: *const ::c_char, basegroup: ::c_int) -> ::c_int;

        #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
                   link_name = "waitid$UNIX2003")]
        pub fn waitid(idtype: idtype_t, id: id_t, infop: *mut ::siginfo_t,
                      options: ::c_int) -> ::c_int;
        pub fn brk(addr: *const ::c_void) -> *mut ::c_void;
        pub fn sbrk(increment: ::c_int) -> *mut ::c_void;
        pub fn settimeofday(tv: *const ::timeval, tz: *const ::timezone) -> ::c_int;
        pub fn _dyld_image_count() -> u32;
        pub fn _dyld_get_image_header(image_index: u32) -> *const mach_header;
        pub fn _dyld_get_image_vmaddr_slide(image_index: u32) -> ::intptr_t;
        pub fn _dyld_get_image_name(image_index: u32) -> *const ::c_char;

        pub fn posix_spawn(pid: *mut ::pid_t,
                           path: *const ::c_char,
                           file_actions: *const ::posix_spawn_file_actions_t,
                           attrp: *const ::posix_spawnattr_t,
                           argv: *const *mut ::c_char,
                           envp: *const *mut ::c_char) -> ::c_int;
        pub fn posix_spawnp(pid: *mut ::pid_t,
                           file: *const ::c_char,
                            file_actions: *const ::posix_spawn_file_actions_t,
                            attrp: *const ::posix_spawnattr_t,
                            argv: *const *mut ::c_char,
                            envp: *const *mut ::c_char) -> ::c_int;
        pub fn posix_spawnattr_init(attr: *mut posix_spawnattr_t) -> ::c_int;
        pub fn posix_spawnattr_destroy(attr: *mut posix_spawnattr_t) -> ::c_int;
        pub fn posix_spawnattr_getsigdefault(attr: *const posix_spawnattr_t,
                                             default: *mut ::sigset_t) -> ::c_int;
        pub fn posix_spawnattr_setsigdefault(attr: *mut posix_spawnattr_t,
                                             default: *const ::sigset_t) -> ::c_int;
        pub fn posix_spawnattr_getsigmask(attr: *const posix_spawnattr_t,
                                          default: *mut ::sigset_t) -> ::c_int;
        pub fn posix_spawnattr_setsigmask(attr: *mut posix_spawnattr_t,
                                          default: *const ::sigset_t) -> ::c_int;
        pub fn posix_spawnattr_getflags(attr: *const posix_spawnattr_t,
                                        flags: *mut ::c_short) -> ::c_int;
        pub fn posix_spawnattr_setflags(attr: *mut posix_spawnattr_t,
                                        flags: ::c_short) -> ::c_int;
        pub fn posix_spawnattr_getpgroup(attr: *const posix_spawnattr_t,
                                         flags: *mut ::pid_t) -> ::c_int;
        pub fn posix_spawnattr_setpgroup(attr: *mut posix_spawnattr_t,
                                         flags: ::pid_t) -> ::c_int;

        pub fn posix_spawn_file_actions_init(
            actions: *mut posix_spawn_file_actions_t,
        ) -> ::c_int;
        pub fn posix_spawn_file_actions_destroy(
            actions: *mut posix_spawn_file_actions_t,
        ) -> ::c_int;
        pub fn posix_spawn_file_actions_addopen(
            actions: *mut posix_spawn_file_actions_t,
            fd: ::c_int,
            path: *const ::c_char,
            oflag: ::c_int,
            mode: ::mode_t,
        ) -> ::c_int;
        pub fn posix_spawn_file_actions_addclose(
            actions: *mut posix_spawn_file_actions_t,
            fd: ::c_int,
        ) -> ::c_int;
        pub fn posix_spawn_file_actions_adddup2(
            actions: *mut posix_spawn_file_actions_t,
            fd: ::c_int,
            newfd: ::c_int,
        ) -> ::c_int;
    }

    cfg_if! {
        if #[cfg(any(target_arch = "arm", target_arch = "x86"))] {
            mod b32;
            pub use self::b32::*;
        } else if #[cfg(any(target_arch = "x86_64", target_arch = "aarch64"))] {
            mod b64;
            pub use self::b64::*;
        } else {
            // Unknown target_arch
        }
    }

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