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    pub type fsblkcnt_t = ::c_ulong;
    pub type fsfilcnt_t = ::c_ulong;
    pub type rlim_t = c_ulong;
    pub type __priority_which_t = ::c_uint;

    s! {
        pub struct aiocb {
            pub aio_fildes: ::c_int,
            pub aio_lio_opcode: ::c_int,
            pub aio_reqprio: ::c_int,
            pub aio_buf: *mut ::c_void,
            pub aio_nbytes: ::size_t,
            pub aio_sigevent: ::sigevent,
            __next_prio: *mut aiocb,
            __abs_prio: ::c_int,
            __policy: ::c_int,
            __error_code: ::c_int,
            __return_value: ::ssize_t,
            pub aio_offset: off_t,
            #[cfg(target_pointer_width = "32")]
            __unused1: [::c_char; 4],
            __glibc_reserved: [::c_char; 32]
        }

        pub struct __exit_status {
            pub e_termination: ::c_short,
            pub e_exit: ::c_short,
        }

        pub struct __timeval {
            pub tv_sec: ::int32_t,
            pub tv_usec: ::int32_t,
        }

        pub struct utmpx {
            pub ut_type: ::c_short,
            pub ut_pid: ::pid_t,
            pub ut_line: [::c_char; __UT_LINESIZE],
            pub ut_id: [::c_char; 4],

            pub ut_user: [::c_char; __UT_NAMESIZE],
            pub ut_host: [::c_char; __UT_HOSTSIZE],
            pub ut_exit: __exit_status,

            #[cfg(any(target_arch = "aarch64",
                      target_arch = "sparc64",
                      target_pointer_width = "32"))]
            pub ut_session: ::c_long,
            #[cfg(any(target_arch = "aarch64",
                      target_arch = "sparc64",
                      target_pointer_width = "32"))]
            pub ut_tv: ::timeval,

            #[cfg(not(any(target_arch = "aarch64",
                          target_arch = "sparc64",
                          target_pointer_width = "32")))]
            pub ut_session: ::int32_t,
            #[cfg(not(any(target_arch = "aarch64",
                          target_arch = "sparc64",
                          target_pointer_width = "32")))]
            pub ut_tv: __timeval,

            pub ut_addr_v6: [::int32_t; 4],
            __glibc_reserved: [::c_char; 20],
        }

        pub struct sigaction {
            pub sa_sigaction: ::sighandler_t,
            pub sa_mask: ::sigset_t,
            #[cfg(target_arch = "sparc64")]
            __reserved0: ::c_int,
            pub sa_flags: ::c_int,
            pub sa_restorer: ::dox::Option<extern fn()>,
        }

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

        pub struct siginfo_t {
            pub si_signo: ::c_int,
            pub si_errno: ::c_int,
            pub si_code: ::c_int,
            pub _pad: [::c_int; 29],
            _align: [usize; 0],
        }

        pub struct glob64_t {
            pub gl_pathc: ::size_t,
            pub gl_pathv: *mut *mut ::c_char,
            pub gl_offs: ::size_t,
            pub gl_flags: ::c_int,

            __unused1: *mut ::c_void,
            __unused2: *mut ::c_void,
            __unused3: *mut ::c_void,
            __unused4: *mut ::c_void,
            __unused5: *mut ::c_void,
        }

        pub struct ucred {
            pub pid: ::pid_t,
            pub uid: ::uid_t,
            pub gid: ::gid_t,
        }

        pub struct statfs {
            pub f_type: __fsword_t,
            pub f_bsize: __fsword_t,
            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_fsid: ::fsid_t,

            pub f_namelen: __fsword_t,
            pub f_frsize: __fsword_t,
            f_spare: [__fsword_t; 5],
        }

        pub struct msghdr {
            pub msg_name: *mut ::c_void,
            pub msg_namelen: ::socklen_t,
            pub msg_iov: *mut ::iovec,
            pub msg_iovlen: ::size_t,
            pub msg_control: *mut ::c_void,
            pub msg_controllen: ::size_t,
            pub msg_flags: ::c_int,
        }

        pub struct cmsghdr {
            pub cmsg_len: ::size_t,
            pub cmsg_level: ::c_int,
            pub cmsg_type: ::c_int,
        }

        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_line: ::cc_t,
            pub c_cc: [::cc_t; ::NCCS],
            #[cfg(not(target_arch = "sparc64"))]
            pub c_ispeed: ::speed_t,
            #[cfg(not(target_arch = "sparc64"))]
            pub c_ospeed: ::speed_t,
        }

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

        // FIXME this is actually a union
        pub struct sem_t {
            #[cfg(target_pointer_width = "32")]
            __size: [::c_char; 16],
            #[cfg(target_pointer_width = "64")]
            __size: [::c_char; 32],
            __align: [::c_long; 0],
        }
    }

    pub const __UT_LINESIZE: usize = 32;
    pub const __UT_NAMESIZE: usize = 32;
    pub const __UT_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 NEW_TIME: ::c_short = 3;
    pub const OLD_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 RLIMIT_RSS: ::c_int = 5;
    pub const RLIMIT_AS: ::c_int = 9;
    pub const RLIMIT_MEMLOCK: ::c_int = 8;
    pub const RLIM_INFINITY: ::rlim_t = !0;
    pub const RLIMIT_RTTIME: ::c_int = 15;
    pub const RLIMIT_NLIMITS: ::c_int = 16;

    pub const SOCK_NONBLOCK: ::c_int = O_NONBLOCK;

    pub const SOL_RXRPC: ::c_int = 272;
    pub const SOL_PPPOL2TP: ::c_int = 273;
    pub const SOL_BLUETOOTH: ::c_int = 274;
    pub const SOL_PNPIPE: ::c_int = 275;
    pub const SOL_RDS: ::c_int = 276;
    pub const SOL_IUCV: ::c_int = 277;
    pub const SOL_CAIF: ::c_int = 278;
    pub const SOL_ALG: ::c_int = 279;
    pub const SOL_NFC: ::c_int = 280;

    pub const MSG_TRYHARD: ::c_int = 4;

    pub const LC_PAPER: ::c_int = 7;
    pub const LC_NAME: ::c_int = 8;
    pub const LC_ADDRESS: ::c_int = 9;
    pub const LC_TELEPHONE: ::c_int = 10;
    pub const LC_MEASUREMENT: ::c_int = 11;
    pub const LC_IDENTIFICATION: ::c_int = 12;
    pub const LC_PAPER_MASK: ::c_int = (1 << LC_PAPER);
    pub const LC_NAME_MASK: ::c_int = (1 << LC_NAME);
    pub const LC_ADDRESS_MASK: ::c_int = (1 << LC_ADDRESS);
    pub const LC_TELEPHONE_MASK: ::c_int = (1 << LC_TELEPHONE);
    pub const LC_MEASUREMENT_MASK: ::c_int = (1 << LC_MEASUREMENT);
    pub const LC_IDENTIFICATION_MASK: ::c_int = (1 << LC_IDENTIFICATION);
    pub const LC_ALL_MASK: ::c_int = ::LC_CTYPE_MASK
                                   | ::LC_NUMERIC_MASK
                                   | ::LC_TIME_MASK
                                   | ::LC_COLLATE_MASK
                                   | ::LC_MONETARY_MASK
                                   | ::LC_MESSAGES_MASK
                                   | LC_PAPER_MASK
                                   | LC_NAME_MASK
                                   | LC_ADDRESS_MASK
                                   | LC_TELEPHONE_MASK
                                   | LC_MEASUREMENT_MASK
                                   | LC_IDENTIFICATION_MASK;

    pub const MAP_ANON: ::c_int = 0x0020;
    pub const MAP_ANONYMOUS: ::c_int = 0x0020;
    pub const MAP_DENYWRITE: ::c_int = 0x0800;
    pub const MAP_EXECUTABLE: ::c_int = 0x01000;
    pub const MAP_POPULATE: ::c_int = 0x08000;
    pub const MAP_NONBLOCK: ::c_int = 0x010000;
    pub const MAP_STACK: ::c_int = 0x020000;

    pub const ENOTSUP: ::c_int = EOPNOTSUPP;
    pub const EUCLEAN: ::c_int = 117;
    pub const ENOTNAM: ::c_int = 118;
    pub const ENAVAIL: ::c_int = 119;
    pub const EISNAM: ::c_int = 120;
    pub const EREMOTEIO: ::c_int = 121;

    pub const SOCK_STREAM: ::c_int = 1;
    pub const SOCK_DGRAM: ::c_int = 2;
    pub const SOCK_SEQPACKET: ::c_int = 5;

    pub const TCP_COOKIE_TRANSACTIONS: ::c_int = 15;
    pub const TCP_THIN_LINEAR_TIMEOUTS: ::c_int = 16;
    pub const TCP_THIN_DUPACK: ::c_int = 17;
    pub const TCP_USER_TIMEOUT: ::c_int = 18;
    pub const TCP_REPAIR: ::c_int = 19;
    pub const TCP_REPAIR_QUEUE: ::c_int = 20;
    pub const TCP_QUEUE_SEQ: ::c_int = 21;
    pub const TCP_REPAIR_OPTIONS: ::c_int = 22;
    pub const TCP_FASTOPEN: ::c_int = 23;
    pub const TCP_TIMESTAMP: ::c_int = 24;

    pub const SIGTTIN: ::c_int = 21;
    pub const SIGTTOU: ::c_int = 22;
    pub const SIGXCPU: ::c_int = 24;
    pub const SIGXFSZ: ::c_int = 25;
    pub const SIGVTALRM: ::c_int = 26;
    pub const SIGPROF: ::c_int = 27;
    pub const SIGWINCH: ::c_int = 28;

    pub const SIGEV_THREAD_ID: ::c_int = 4;

    pub const POLLRDNORM: ::c_short = 0x040;
    pub const POLLRDBAND: ::c_short = 0x080;

    pub const FALLOC_FL_KEEP_SIZE: ::c_int = 0x01;
    pub const FALLOC_FL_PUNCH_HOLE: ::c_int = 0x02;

    pub const BUFSIZ: ::c_uint = 8192;
    pub const TMP_MAX: ::c_uint = 238328;
    pub const FOPEN_MAX: ::c_uint = 16;
    pub const POSIX_FADV_DONTNEED: ::c_int = 4;
    pub const POSIX_FADV_NOREUSE: ::c_int = 5;
    pub const POSIX_MADV_DONTNEED: ::c_int = 4;
    pub const _SC_EQUIV_CLASS_MAX: ::c_int = 41;
    pub const _SC_CHARCLASS_NAME_MAX: ::c_int = 45;
    pub const _SC_PII: ::c_int = 53;
    pub const _SC_PII_XTI: ::c_int = 54;
    pub const _SC_PII_SOCKET: ::c_int = 55;
    pub const _SC_PII_INTERNET: ::c_int = 56;
    pub const _SC_PII_OSI: ::c_int = 57;
    pub const _SC_POLL: ::c_int = 58;
    pub const _SC_SELECT: ::c_int = 59;
    pub const _SC_PII_INTERNET_STREAM: ::c_int = 61;
    pub const _SC_PII_INTERNET_DGRAM: ::c_int = 62;
    pub const _SC_PII_OSI_COTS: ::c_int = 63;
    pub const _SC_PII_OSI_CLTS: ::c_int = 64;
    pub const _SC_PII_OSI_M: ::c_int = 65;
    pub const _SC_T_IOV_MAX: ::c_int = 66;
    pub const _SC_2_C_VERSION: ::c_int = 96;
    pub const _SC_CHAR_BIT: ::c_int = 101;
    pub const _SC_CHAR_MAX: ::c_int = 102;
    pub const _SC_CHAR_MIN: ::c_int = 103;
    pub const _SC_INT_MAX: ::c_int = 104;
    pub const _SC_INT_MIN: ::c_int = 105;
    pub const _SC_LONG_BIT: ::c_int = 106;
    pub const _SC_WORD_BIT: ::c_int = 107;
    pub const _SC_MB_LEN_MAX: ::c_int = 108;
    pub const _SC_SSIZE_MAX: ::c_int = 110;
    pub const _SC_SCHAR_MAX: ::c_int = 111;
    pub const _SC_SCHAR_MIN: ::c_int = 112;
    pub const _SC_SHRT_MAX: ::c_int = 113;
    pub const _SC_SHRT_MIN: ::c_int = 114;
    pub const _SC_UCHAR_MAX: ::c_int = 115;
    pub const _SC_UINT_MAX: ::c_int = 116;
    pub const _SC_ULONG_MAX: ::c_int = 117;
    pub const _SC_USHRT_MAX: ::c_int = 118;
    pub const _SC_NL_ARGMAX: ::c_int = 119;
    pub const _SC_NL_LANGMAX: ::c_int = 120;
    pub const _SC_NL_MSGMAX: ::c_int = 121;
    pub const _SC_NL_NMAX: ::c_int = 122;
    pub const _SC_NL_SETMAX: ::c_int = 123;
    pub const _SC_NL_TEXTMAX: ::c_int = 124;
    pub const _SC_BASE: ::c_int = 134;
    pub const _SC_C_LANG_SUPPORT: ::c_int = 135;
    pub const _SC_C_LANG_SUPPORT_R: ::c_int = 136;
    pub const _SC_DEVICE_IO: ::c_int = 140;
    pub const _SC_DEVICE_SPECIFIC: ::c_int = 141;
    pub const _SC_DEVICE_SPECIFIC_R: ::c_int = 142;
    pub const _SC_FD_MGMT: ::c_int = 143;
    pub const _SC_FIFO: ::c_int = 144;
    pub const _SC_PIPE: ::c_int = 145;
    pub const _SC_FILE_ATTRIBUTES: ::c_int = 146;
    pub const _SC_FILE_LOCKING: ::c_int = 147;
    pub const _SC_FILE_SYSTEM: ::c_int = 148;
    pub const _SC_MULTI_PROCESS: ::c_int = 150;
    pub const _SC_SINGLE_PROCESS: ::c_int = 151;
    pub const _SC_NETWORKING: ::c_int = 152;
    pub const _SC_REGEX_VERSION: ::c_int = 156;
    pub const _SC_SIGNALS: ::c_int = 158;
    pub const _SC_SYSTEM_DATABASE: ::c_int = 162;
    pub const _SC_SYSTEM_DATABASE_R: ::c_int = 163;
    pub const _SC_USER_GROUPS: ::c_int = 166;
    pub const _SC_USER_GROUPS_R: ::c_int = 167;
    pub const _SC_LEVEL1_ICACHE_SIZE: ::c_int = 185;
    pub const _SC_LEVEL1_ICACHE_ASSOC: ::c_int = 186;
    pub const _SC_LEVEL1_ICACHE_LINESIZE: ::c_int = 187;
    pub const _SC_LEVEL1_DCACHE_SIZE: ::c_int = 188;
    pub const _SC_LEVEL1_DCACHE_ASSOC: ::c_int = 189;
    pub const _SC_LEVEL1_DCACHE_LINESIZE: ::c_int = 190;
    pub const _SC_LEVEL2_CACHE_SIZE: ::c_int = 191;
    pub const _SC_LEVEL2_CACHE_ASSOC: ::c_int = 192;
    pub const _SC_LEVEL2_CACHE_LINESIZE: ::c_int = 193;
    pub const _SC_LEVEL3_CACHE_SIZE: ::c_int = 194;
    pub const _SC_LEVEL3_CACHE_ASSOC: ::c_int = 195;
    pub const _SC_LEVEL3_CACHE_LINESIZE: ::c_int = 196;
    pub const _SC_LEVEL4_CACHE_SIZE: ::c_int = 197;
    pub const _SC_LEVEL4_CACHE_ASSOC: ::c_int = 198;
    pub const _SC_LEVEL4_CACHE_LINESIZE: ::c_int = 199;
    pub const O_ACCMODE: ::c_int = 3;
    pub const ST_RELATIME: ::c_ulong = 4096;
    pub const NI_MAXHOST: ::socklen_t = 1025;

    pub const ADFS_SUPER_MAGIC: ::c_long = 0x0000adf5;
    pub const AFFS_SUPER_MAGIC: ::c_long = 0x0000adff;
    pub const CODA_SUPER_MAGIC: ::c_long = 0x73757245;
    pub const CRAMFS_MAGIC: ::c_long = 0x28cd3d45;
    pub const EFS_SUPER_MAGIC: ::c_long = 0x00414a53;
    pub const EXT2_SUPER_MAGIC: ::c_long = 0x0000ef53;
    pub const EXT3_SUPER_MAGIC: ::c_long = 0x0000ef53;
    pub const EXT4_SUPER_MAGIC: ::c_long = 0x0000ef53;
    pub const HPFS_SUPER_MAGIC: ::c_long = 0xf995e849;
    pub const HUGETLBFS_MAGIC: ::c_long = 0x958458f6;
    pub const ISOFS_SUPER_MAGIC: ::c_long = 0x00009660;
    pub const JFFS2_SUPER_MAGIC: ::c_long = 0x000072b6;
    pub const MINIX_SUPER_MAGIC: ::c_long = 0x0000137f;
    pub const MINIX_SUPER_MAGIC2: ::c_long = 0x0000138f;
    pub const MINIX2_SUPER_MAGIC: ::c_long = 0x00002468;
    pub const MINIX2_SUPER_MAGIC2: ::c_long = 0x00002478;
    pub const MSDOS_SUPER_MAGIC: ::c_long = 0x00004d44;
    pub const NCP_SUPER_MAGIC: ::c_long = 0x0000564c;
    pub const NFS_SUPER_MAGIC: ::c_long = 0x00006969;
    pub const OPENPROM_SUPER_MAGIC: ::c_long = 0x00009fa1;
    pub const PROC_SUPER_MAGIC: ::c_long = 0x00009fa0;
    pub const QNX4_SUPER_MAGIC: ::c_long = 0x0000002f;
    pub const REISERFS_SUPER_MAGIC: ::c_long = 0x52654973;
    pub const SMB_SUPER_MAGIC: ::c_long = 0x0000517b;
    pub const TMPFS_MAGIC: ::c_long = 0x01021994;
    pub const USBDEVICE_SUPER_MAGIC: ::c_long = 0x00009fa2;

    pub const VEOF: usize = 4;

    pub const CPU_SETSIZE: ::c_int = 0x400;

    pub const QFMT_VFS_V1: ::c_int = 4;

    pub const PTRACE_TRACEME: ::c_uint = 0;
    pub const PTRACE_PEEKTEXT: ::c_uint = 1;
    pub const PTRACE_PEEKDATA: ::c_uint = 2;
    pub const PTRACE_PEEKUSER: ::c_uint = 3;
    pub const PTRACE_POKETEXT: ::c_uint = 4;
    pub const PTRACE_POKEDATA: ::c_uint = 5;
    pub const PTRACE_POKEUSER: ::c_uint = 6;
    pub const PTRACE_CONT: ::c_uint = 7;
    pub const PTRACE_KILL: ::c_uint = 8;
    pub const PTRACE_SINGLESTEP: ::c_uint = 9;
    pub const PTRACE_ATTACH: ::c_uint = 16;
    pub const PTRACE_SYSCALL: ::c_uint = 24;
    pub const PTRACE_SETOPTIONS: ::c_uint = 0x4200;
    pub const PTRACE_GETEVENTMSG: ::c_uint = 0x4201;
    pub const PTRACE_GETSIGINFO: ::c_uint = 0x4202;
    pub const PTRACE_SETSIGINFO: ::c_uint = 0x4203;
    pub const PTRACE_GETREGSET: ::c_uint = 0x4204;
    pub const PTRACE_SETREGSET: ::c_uint = 0x4205;
    pub const PTRACE_SEIZE: ::c_uint = 0x4206;
    pub const PTRACE_INTERRUPT: ::c_uint = 0x4207;
    pub const PTRACE_LISTEN: ::c_uint = 0x4208;
    pub const PTRACE_PEEKSIGINFO: ::c_uint = 0x4209;

    pub const MADV_DODUMP: ::c_int = 17;
    pub const MADV_DONTDUMP: ::c_int = 16;

    pub const EPOLLWAKEUP: ::c_int = 0x20000000;

    pub const MADV_HUGEPAGE: ::c_int = 14;
    pub const MADV_NOHUGEPAGE: ::c_int = 15;
    pub const MAP_HUGETLB: ::c_int = 0x040000;

    pub const SEEK_DATA: ::c_int = 3;
    pub const SEEK_HOLE: ::c_int = 4;

    pub const TCSANOW: ::c_int = 0;
    pub const TCSADRAIN: ::c_int = 1;
    pub const TCSAFLUSH: ::c_int = 2;

    pub const TIOCLINUX: ::c_ulong = 0x541C;
    pub const TIOCGSERIAL: ::c_ulong = 0x541E;

    pub const RTLD_DEEPBIND: ::c_int = 0x8;
    pub const RTLD_GLOBAL: ::c_int = 0x100;
    pub const RTLD_NOLOAD: ::c_int = 0x4;

    pub const LINUX_REBOOT_MAGIC1: ::c_int = 0xfee1dead;
    pub const LINUX_REBOOT_MAGIC2: ::c_int = 672274793;
    pub const LINUX_REBOOT_MAGIC2A: ::c_int = 85072278;
    pub const LINUX_REBOOT_MAGIC2B: ::c_int = 369367448;
    pub const LINUX_REBOOT_MAGIC2C: ::c_int = 537993216;

    pub const LINUX_REBOOT_CMD_RESTART: ::c_int = 0x01234567;
    pub const LINUX_REBOOT_CMD_HALT: ::c_int = 0xCDEF0123;
    pub const LINUX_REBOOT_CMD_CAD_ON: ::c_int = 0x89ABCDEF;
    pub const LINUX_REBOOT_CMD_CAD_OFF: ::c_int = 0x00000000;
    pub const LINUX_REBOOT_CMD_POWER_OFF: ::c_int = 0x4321FEDC;
    pub const LINUX_REBOOT_CMD_RESTART2: ::c_int = 0xA1B2C3D4;
    pub const LINUX_REBOOT_CMD_SW_SUSPEND: ::c_int = 0xD000FCE2;
    pub const LINUX_REBOOT_CMD_KEXEC: ::c_int = 0x45584543;

    pub const NETLINK_ROUTE: ::c_int = 0;
    pub const NETLINK_UNUSED: ::c_int = 1;
    pub const NETLINK_USERSOCK: ::c_int = 2;
    pub const NETLINK_FIREWALL: ::c_int = 3;
    pub const NETLINK_SOCK_DIAG: ::c_int = 4;
    pub const NETLINK_NFLOG: ::c_int = 5;
    pub const NETLINK_XFRM: ::c_int = 6;
    pub const NETLINK_SELINUX: ::c_int = 7;
    pub const NETLINK_ISCSI: ::c_int = 8;
    pub const NETLINK_AUDIT: ::c_int = 9;
    pub const NETLINK_FIB_LOOKUP: ::c_int = 10;
    pub const NETLINK_CONNECTOR: ::c_int = 11;
    pub const NETLINK_NETFILTER: ::c_int = 12;
    pub const NETLINK_IP6_FW: ::c_int = 13;
    pub const NETLINK_DNRTMSG: ::c_int = 14;
    pub const NETLINK_KOBJECT_UEVENT: ::c_int = 15;
    pub const NETLINK_GENERIC: ::c_int = 16;
    pub const NETLINK_SCSITRANSPORT: ::c_int = 18;
    pub const NETLINK_ECRYPTFS: ::c_int = 19;
    pub const NETLINK_RDMA: ::c_int = 20;
    pub const NETLINK_CRYPTO: ::c_int = 21;
    pub const NETLINK_INET_DIAG: ::c_int = NETLINK_SOCK_DIAG;

    pub const MAX_LINKS: ::c_int = 32;

    pub const NLM_F_REQUEST: ::c_int = 1;
    pub const NLM_F_MULTI: ::c_int = 2;
    pub const NLM_F_ACK: ::c_int = 4;
    pub const NLM_F_ECHO: ::c_int = 8;
    pub const NLM_F_DUMP_INTR: ::c_int = 16;
    pub const NLM_F_DUMP_FILTERED: ::c_int = 32;

    pub const NLM_F_ROOT: ::c_int = 0x100;
    pub const NLM_F_MATCH: ::c_int = 0x200;
    pub const NLM_F_ATOMIC: ::c_int = 0x400;
    pub const NLM_F_DUMP: ::c_int = NLM_F_ROOT | NLM_F_MATCH;

    pub const NLM_F_REPLACE: ::c_int = 0x100;
    pub const NLM_F_EXCL: ::c_int = 0x200;
    pub const NLM_F_CREATE: ::c_int = 0x400;
    pub const NLM_F_APPEND: ::c_int = 0x800;

    pub const NLMSG_NOOP: ::c_int = 0x1;
    pub const NLMSG_ERROR: ::c_int = 0x2;
    pub const NLMSG_DONE: ::c_int = 0x3;
    pub const NLMSG_OVERRUN: ::c_int = 0x4;
    pub const NLMSG_MIN_TYPE: ::c_int = 0x10;

    pub const NETLINK_ADD_MEMBERSHIP: ::c_int = 1;
    pub const NETLINK_DROP_MEMBERSHIP: ::c_int = 2;
    pub const NETLINK_PKTINFO: ::c_int = 3;
    pub const NETLINK_BROADCAST_ERROR: ::c_int = 4;
    pub const NETLINK_NO_ENOBUFS: ::c_int = 5;
    pub const NETLINK_RX_RING: ::c_int = 6;
    pub const NETLINK_TX_RING: ::c_int = 7;
    pub const NETLINK_LISTEN_ALL_NSID: ::c_int = 8;
    pub const NETLINK_LIST_MEMBERSHIPS: ::c_int = 9;
    pub const NETLINK_CAP_ACK: ::c_int = 10;

    pub const NLA_F_NESTED: ::c_int = 1 << 15;
    pub const NLA_F_NET_BYTEORDER: ::c_int = 1 << 14;
    pub const NLA_TYPE_MASK: ::c_int = !(NLA_F_NESTED | NLA_F_NET_BYTEORDER);

    pub const CMSPAR: ::tcflag_t = 0o10000000000;

    pub const TIOCM_LE: ::c_int = 0x001;
    pub const TIOCM_DTR: ::c_int = 0x002;
    pub const TIOCM_RTS: ::c_int = 0x004;
    pub const TIOCM_ST: ::c_int = 0x008;
    pub const TIOCM_SR: ::c_int = 0x010;
    pub const TIOCM_CTS: ::c_int = 0x020;
    pub const TIOCM_CAR: ::c_int = 0x040;
    pub const TIOCM_RNG: ::c_int = 0x080;
    pub const TIOCM_DSR: ::c_int = 0x100;
    pub const TIOCM_CD: ::c_int = TIOCM_CAR;
    pub const TIOCM_RI: ::c_int = TIOCM_RNG;

    cfg_if! {
        if #[cfg(any(target_arch = "arm", target_arch = "x86",
                     target_arch = "x86_64"))] {
            pub const PTHREAD_STACK_MIN: ::size_t = 16384;
        } else if #[cfg(target_arch = "sparc64")] {
            pub const PTHREAD_STACK_MIN: ::size_t = 0x6000;
        } else {
            pub const PTHREAD_STACK_MIN: ::size_t = 131072;
        }
    }

    extern {
        pub fn utmpxname(file: *const ::c_char) -> ::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 getpt() -> ::c_int;
    }

    #[link(name = "util")]
    extern {
        pub fn sysctl(name: *mut ::c_int,
                      namelen: ::c_int,
                      oldp: *mut ::c_void,
                      oldlenp: *mut ::size_t,
                      newp: *mut ::c_void,
                      newlen: ::size_t)
                      -> ::c_int;
        pub fn ioctl(fd: ::c_int, request: ::c_ulong, ...) -> ::c_int;
        pub fn backtrace(buf: *mut *mut ::c_void,
                         sz: ::c_int) -> ::c_int;
        pub fn glob64(pattern: *const ::c_char,
                      flags: ::c_int,
                      errfunc: ::dox::Option<extern fn(epath: *const ::c_char,
                                                       errno: ::c_int)
                                                       -> ::c_int>,
                      pglob: *mut glob64_t) -> ::c_int;
        pub fn globfree64(pglob: *mut glob64_t);
        pub fn ptrace(request: ::c_uint, ...) -> ::c_long;
        pub fn pthread_attr_getaffinity_np(attr: *const ::pthread_attr_t,
                                           cpusetsize: ::size_t,
                                           cpuset: *mut ::cpu_set_t) -> ::c_int;
        pub fn pthread_attr_setaffinity_np(attr: *mut ::pthread_attr_t,
                                           cpusetsize: ::size_t,
                                           cpuset: *const ::cpu_set_t) -> ::c_int;
        pub fn getpriority(which: ::__priority_which_t, who: ::id_t) -> ::c_int;
        pub fn setpriority(which: ::__priority_which_t, who: ::id_t,
                                           prio: ::c_int) -> ::c_int;
        pub fn pthread_getaffinity_np(thread: ::pthread_t,
                                      cpusetsize: ::size_t,
                                      cpuset: *mut ::cpu_set_t) -> ::c_int;
        pub fn pthread_setaffinity_np(thread: ::pthread_t,
                                      cpusetsize: ::size_t,
                                      cpuset: *const ::cpu_set_t) -> ::c_int;
        pub fn pthread_rwlockattr_getkind_np(attr: *const ::pthread_rwlockattr_t,
                                             val: *mut ::c_int) -> ::c_int;
        pub fn pthread_rwlockattr_setkind_np(attr: *mut ::pthread_rwlockattr_t,
                                             val: ::c_int) -> ::c_int;
        pub fn sched_getcpu() -> ::c_int;
    }

    cfg_if! {
        if #[cfg(any(target_arch = "x86",
                     target_arch = "arm",
                     target_arch = "powerpc"))] {
            mod b32;
            pub use self::b32::*;
        } else if #[cfg(any(target_arch = "x86_64",
                            target_arch = "aarch64",
                            target_arch = "powerpc64",
                            target_arch = "sparc64"))] {
            mod b64;
            pub use self::b64::*;
        } else {
            // Unknown target_arch
        }
    }

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