Vendor dependencies for 0.3.0 release

vendor/hermit-abi/src/errno.rs

@@ -0,0 +1,532 @@
+/// Operation not permitted
+pub const EPERM: i32 = 1;
+
+/// No such file or directory
+pub const ENOENT: i32 = 2;
+
+/// No such process
+pub const ESRCH: i32 = 3;
+
+/// Interrupted system call
+pub const EINTR: i32 = 4;
+
+/// I/O error
+pub const EIO: i32 = 5;
+
+/// No such device or address
+pub const ENXIO: i32 = 6;
+
+/// Argument list too long
+pub const E2BIG: i32 = 7;
+
+/// Exec format error
+pub const ENOEXEC: i32 = 8;
+
+/// Bad file number
+pub const EBADF: i32 = 9;
+
+/// No child processes
+pub const ECHILD: i32 = 10;
+
+/// Try again
+pub const EAGAIN: i32 = 11;
+
+/// Out of memory
+pub const ENOMEM: i32 = 12;
+
+/// Permission denied
+pub const EACCES: i32 = 13;
+
+/// Bad address
+pub const EFAULT: i32 = 14;
+
+/// Block device required
+pub const ENOTBLK: i32 = 15;
+
+/// Device or resource busy
+pub const EBUSY: i32 = 16;
+
+/// File exists
+pub const EEXIST: i32 = 17;
+
+/// Cross-device link
+pub const EXDEV: i32 = 18;
+
+/// No such device
+pub const ENODEV: i32 = 19;
+
+/// Not a directory
+pub const ENOTDIR: i32 = 20;
+
+/// Is a directory
+pub const EISDIR: i32 = 21;
+
+/// Invalid argument
+pub const EINVAL: i32 = 22;
+
+/// File table overflow
+pub const ENFILE: i32 = 23;
+
+/// Too many open files
+pub const EMFILE: i32 = 24;
+
+/// Not a typewriter
+pub const ENOTTY: i32 = 25;
+
+/// Text file busy
+pub const ETXTBSY: i32 = 26;
+
+/// File too large
+pub const EFBIG: i32 = 27;
+
+/// No space left on device
+pub const ENOSPC: i32 = 28;
+
+/// Illegal seek
+pub const ESPIPE: i32 = 29;
+
+/// Read-only file system
+pub const EROFS: i32 = 30;
+
+/// Too many links
+pub const EMLINK: i32 = 31;
+
+/// Broken pipe
+pub const EPIPE: i32 = 32;
+
+/// Math argument out of domain of func
+pub const EDOM: i32 = 33;
+
+/// Math result not representable
+pub const ERANGE: i32 = 34;
+
+/// Resource deadlock would occur
+pub const EDEADLK: i32 = 35;
+
+/// File name too long
+pub const ENAMETOOLONG: i32 = 36;
+
+/// No record locks available
+pub const ENOLCK: i32 = 37;
+
+/// Function not implemented
+pub const ENOSYS: i32 = 38;
+
+/// Directory not empty
+pub const ENOTEMPTY: i32 = 39;
+
+/// Too many symbolic links encountered
+pub const ELOOP: i32 = 40;
+
+/// Operation would block
+pub const EWOULDBLOCK: i32 = EAGAIN;
+
+/// No message of desired type
+pub const ENOMSG: i32 = 42;
+
+/// Identifier removed
+pub const EIDRM: i32 = 43;
+
+/// Channel number out of range
+pub const ECHRNG: i32 = 44;
+
+/// Level 2 not synchronized
+pub const EL2NSYNC: i32 = 45;
+
+/// Level 3 halted
+pub const EL3HLT: i32 = 46;
+
+/// Level 3 reset
+pub const EL3RST: i32 = 47;
+
+/// Link number out of range
+pub const ELNRNG: i32 = 48;
+
+/// Protocol driver not attached
+pub const EUNATCH: i32 = 49;
+
+/// No CSI structure available
+pub const ENOCSI: i32 = 50;
+
+/// Level 2 halted
+pub const EL2HLT: i32 = 51;
+
+/// Invalid exchange
+pub const EBADE: i32 = 52;
+
+/// Invalid request descriptor
+pub const EBADR: i32 = 53;
+
+/// Exchange full
+pub const EXFULL: i32 = 54;
+
+/// No anode
+pub const ENOANO: i32 = 55;
+
+/// Invalid request code
+pub const EBADRQC: i32 = 56;
+
+/// Invalid slot
+pub const EBADSLT: i32 = 57;
+
+pub const EDEADLOCK: i32 = EDEADLK;
+
+/// Bad font file format
+pub const EBFONT: i32 = 59;
+
+/// Device not a stream
+pub const ENOSTR: i32 = 60;
+
+/// No data available
+pub const ENODATA: i32 = 61;
+
+/// Timer expired
+pub const ETIME: i32 = 62;
+
+/// Out of streams resources
+pub const ENOSR: i32 = 63;
+
+/// Machine is not on the network
+pub const ENONET: i32 = 64;
+
+/// Package not installed
+pub const ENOPKG: i32 = 65;
+
+/// Object is remote
+pub const EREMOTE: i32 = 66;
+
+/// Link has been severed
+pub const ENOLINK: i32 = 67;
+
+/// Advertise error
+pub const EADV: i32 = 68;
+
+/// Srmount error
+pub const ESRMNT: i32 = 69;
+
+/// Communication error on send
+pub const ECOMM: i32 = 70;
+
+/// Protocol error
+pub const EPROTO: i32 = 71;
+
+/// Multihop attempted
+pub const EMULTIHOP: i32 = 72;
+
+/// RFS specific error
+pub const EDOTDOT: i32 = 73;
+
+/// Not a data message
+pub const EBADMSG: i32 = 74;
+
+/// Value too large for defined data type
+pub const EOVERFLOW: i32 = 75;
+
+/// Name not unique on network
+pub const ENOTUNIQ: i32 = 76;
+
+/// File descriptor in bad state
+pub const EBADFD: i32 = 77;
+
+/// Remote address changed
+pub const EREMCHG: i32 = 78;
+
+/// Can not access a needed shared library
+pub const ELIBACC: i32 = 79;
+
+/// Accessing a corrupted shared library
+pub const ELIBBAD: i32 = 80;
+
+/// .lib section in a.out corrupted
+pub const ELIBSCN: i32 = 81;
+
+/// Attempting to link in too many shared libraries
+pub const ELIBMAX: i32 = 82;
+
+/// Cannot exec a shared library directly
+pub const ELIBEXEC: i32 = 83;
+
+/// Illegal byte sequence
+pub const EILSEQ: i32 = 84;
+
+/// Interrupted system call should be restarted
+pub const ERESTART: i32 = 85;
+
+/// Streams pipe error
+pub const ESTRPIPE: i32 = 86;
+
+/// Too many users
+pub const EUSERS: i32 = 87;
+
+/// Socket operation on non-socket
+pub const ENOTSOCK: i32 = 88;
+
+/// Destination address required
+pub const EDESTADDRREQ: i32 = 89;
+
+/// Message too long
+pub const EMSGSIZE: i32 = 90;
+
+/// Protocol wrong type for socket
+pub const EPROTOTYPE: i32 = 91;
+
+/// Protocol not available
+pub const ENOPROTOOPT: i32 = 92;
+
+/// Protocol not supported
+pub const EPROTONOSUPPORT: i32 = 93;
+
+/// Socket type not supported
+pub const ESOCKTNOSUPPORT: i32 = 94;
+
+/// Operation not supported on transport endpoint
+pub const EOPNOTSUPP: i32 = 95;
+
+/// Protocol family not supported
+pub const EPFNOSUPPORT: i32 = 96;
+
+/// Address family not supported by protocol
+pub const EAFNOSUPPORT: i32 = 97;
+
+/// Address already in use
+pub const EADDRINUSE: i32 = 98;
+
+/// Cannot assign requested address
+pub const EADDRNOTAVAIL: i32 = 99;
+
+/// Network is down
+pub const ENETDOWN: i32 = 100;
+
+/// Network is unreachable
+pub const ENETUNREACH: i32 = 101;
+
+/// Network dropped connection because of reset
+pub const ENETRESET: i32 = 102;
+
+/// Software caused connection abort
+pub const ECONNABORTED: i32 = 103;
+
+/// Connection reset by peer
+pub const ECONNRESET: i32 = 104;
+
+/// No buffer space available
+pub const ENOBUFS: i32 = 105;
+
+/// Transport endpoint is already connected
+pub const EISCONN: i32 = 106;
+
+/// Transport endpoint is not connected
+pub const ENOTCONN: i32 = 107;
+
+/// Cannot send after transport endpoint shutdown
+pub const ESHUTDOWN: i32 = 108;
+
+/// Too many references: cannot splice
+pub const ETOOMANYREFS: i32 = 109;
+
+/// Connection timed out
+pub const ETIMEDOUT: i32 = 110;
+
+/// Connection refused
+pub const ECONNREFUSED: i32 = 111;
+
+/// Host is down
+pub const EHOSTDOWN: i32 = 112;
+
+/// No route to host
+pub const EHOSTUNREACH: i32 = 113;
+
+/// Operation already in progress
+pub const EALREADY: i32 = 114;
+
+/// Operation now in progress
+pub const EINPROGRESS: i32 = 115;
+
+/// Stale file handle
+pub const ESTALE: i32 = 116;
+
+/// Structure needs cleaning
+pub const EUCLEAN: i32 = 117;
+
+/// Not a XENIX named type file
+pub const ENOTNAM: i32 = 118;
+
+/// No XENIX semaphores available
+pub const ENAVAIL: i32 = 119;
+
+/// Is a named type file
+pub const EISNAM: i32 = 120;
+
+/// Remote I/O error
+pub const EREMOTEIO: i32 = 121;
+
+/// Quota exceeded
+pub const EDQUOT: i32 = 122;
+
+/// No medium found
+pub const ENOMEDIUM: i32 = 123;
+
+/// Wrong medium type
+pub const EMEDIUMTYPE: i32 = 124;
+
+/// Operation Canceled
+pub const ECANCELED: i32 = 125;
+
+/// Required key not available
+pub const ENOKEY: i32 = 126;
+
+/// Key has expired
+pub const EKEYEXPIRED: i32 = 127;
+
+/// Key has been revoked
+pub const EKEYREVOKED: i32 = 128;
+
+/// Key was rejected by service
+pub const EKEYREJECTED: i32 = 129;
+
+/// Robust mutexes: Owner died
+pub const EOWNERDEAD: i32 = 130;
+
+/// Robust mutexes: State not recoverable
+pub const ENOTRECOVERABLE: i32 = 131;
+
+/// Robust mutexes: Operation not possible due to RF-kill
+pub const ERFKILL: i32 = 132;
+
+/// Robust mutexes: Memory page has hardware error
+pub const EHWPOISON: i32 = 133;
+
+/// Converts an error number to a corresponding error string
+pub fn error_string(errno: i32) -> &'static str {
+	match errno {
+		0 => "Operation successful",
+		EPERM => "Operation not permitted",
+		ENOENT => "No such file or directory",
+		ESRCH => "No such process",
+		EINTR => "Interrupted system call",
+		EIO => "I/O error",
+		ENXIO => "No such device or address",
+		E2BIG => "Argument list too long",
+		ENOEXEC => "Exec format error",
+		EBADF => "Bad file number",
+		ECHILD => "No child processes",
+		EAGAIN => "Try again",
+		ENOMEM => "Out of memory",
+		EACCES => "Permission denied",
+		EFAULT => "Bad address",
+		ENOTBLK => "Block device required",
+		EBUSY => "Device or resource busy",
+		EEXIST => "File exists",
+		EXDEV => "Cross-device link",
+		ENODEV => "No such device",
+		ENOTDIR => "Not a directory",
+		EISDIR => "Is a directory",
+		EINVAL => "Invalid argument",
+		ENFILE => "File table overflow",
+		EMFILE => "Too many open files",
+		ENOTTY => "Not a typewriter",
+		ETXTBSY => "Text file busy",
+		EFBIG => "File too large",
+		ENOSPC => "No space left on device",
+		ESPIPE => "Illegal seek",
+		EROFS => "Read-only file system",
+		EMLINK => "Too many links",
+		EPIPE => "Broken pipe",
+		EDOM => "Math argument out of domain of func",
+		ERANGE => "Math result not representable",
+		EDEADLK => "Resource deadlock would occur",
+		ENAMETOOLONG => "File name too long",
+		ENOLCK => "No record locks available",
+		ENOSYS => "Function not implemented",
+		ENOTEMPTY => "Directory not empty",
+		ELOOP => "Too many symbolic links encountered",
+		ENOMSG => "No message of desired type",
+		EIDRM => "Identifier removed",
+		ECHRNG => "Channel number out of range",
+		EL2NSYNC => "Level 2 not synchronized",
+		EL3HLT => "Level 3 halted",
+		EL3RST => "Level 3 reset",
+		ELNRNG => "Link number out of range",
+		EUNATCH => "Protocol driver not attached",
+		ENOCSI => "No CSI structure available",
+		EL2HLT => "Level 2 halted",
+		EBADE => "Invalid exchange",
+		EBADR => "Invalid request descriptor",
+		EXFULL => "Exchange full",
+		ENOANO => "No anode",
+		EBADRQC => "Invalid request code",
+		EBADSLT => "Invalid slot",
+		EBFONT => "Bad font file format",
+		ENOSTR => "Device not a stream",
+		ENODATA => "No data available",
+		ETIME => "Timer expired",
+		ENOSR => "Out of streams resources",
+		ENONET => "Machine is not on the network",
+		ENOPKG => "Package not installed",
+		EREMOTE => "Object is remote",
+		ENOLINK => "Link has been severed",
+		EADV => "Advertise error",
+		ESRMNT => "Srmount error",
+		ECOMM => "Communication error on send",
+		EPROTO => "Protocol error",
+		EMULTIHOP => "Multihop attempted",
+		EDOTDOT => "RFS specific error",
+		EBADMSG => "Not a data message",
+		EOVERFLOW => "Value too large for defined data type",
+		ENOTUNIQ => "Name not unique on network",
+		EBADFD => "File descriptor in bad state",
+		EREMCHG => "Remote address changed",
+		ELIBACC => "Can not access a needed shared library",
+		ELIBBAD => "Accessing a corrupted shared library",
+		ELIBSCN => "Lib section in a.out corrupted",
+		ELIBMAX => "Attempting to link in too many shared libraries",
+		ELIBEXEC => "Cannot exec a shared library directly",
+		EILSEQ => "Illegal byte sequence",
+		ERESTART => "Interrupted system call should be restarted",
+		ESTRPIPE => "Streams pipe error",
+		EUSERS => "Too many users",
+		ENOTSOCK => "Socket operation on non-socket",
+		EDESTADDRREQ => "Destination address required",
+		EMSGSIZE => "Message too long",
+		EPROTOTYPE => "Protocol wrong type for socket",
+		ENOPROTOOPT => "Protocol not available",
+		EPROTONOSUPPORT => "Protocol not supported",
+		ESOCKTNOSUPPORT => "Socket type not supported",
+		EOPNOTSUPP => "Operation not supported on transport endpoint",
+		EPFNOSUPPORT => "Protocol family not supported",
+		EAFNOSUPPORT => "Address family not supported by protocol",
+		EADDRINUSE => "Address already in use",
+		EADDRNOTAVAIL => "Cannot assign requested address",
+		ENETDOWN => "Network is down",
+		ENETUNREACH => "Network is unreachable",
+		ENETRESET => "Network dropped connection because of reset",
+		ECONNABORTED => "Software caused connection abort",
+		ECONNRESET => "Connection reset by peer",
+		ENOBUFS => "No buffer space available",
+		EISCONN => "Transport endpoint is already connected",
+		ENOTCONN => "Transport endpoint is not connected",
+		ESHUTDOWN => "Cannot send after transport endpoint shutdown",
+		ETOOMANYREFS => "Too many references: cannot splice",
+		ETIMEDOUT => "Connection timed out",
+		ECONNREFUSED => "Connection refused",
+		EHOSTDOWN => "Host is down",
+		EHOSTUNREACH => "No route to host",
+		EALREADY => "Operation already in progress",
+		EINPROGRESS => "Operation now in progress",
+		ESTALE => "Stale file handle",
+		EUCLEAN => "Structure needs cleaning",
+		EDQUOT => "Quota exceeded",
+		ENOMEDIUM => "No medium found",
+		EMEDIUMTYPE => "Wrong medium type",
+		ECANCELED => "Operation Canceled",
+		ENOKEY => "Required key not available",
+		EKEYEXPIRED => "Key has expired",
+		EKEYREVOKED => "Key has been revoked",
+		EKEYREJECTED => "Key was rejected by service",
+		EOWNERDEAD => "Robust mutexes: Owner died",
+		ENOTRECOVERABLE => "Robust mutexes: State not recoverable",
+		ERFKILL => "Robust mutexes: Operation not possible due to RF-kill",
+		EHWPOISON => "Robust mutexes: Memory page has hardware error",
+		_ => "Unknown error",
+	}
+}

vendor/hermit-abi/src/lib.rs

@@ -0,0 +1,910 @@
+//! `hermit-abi` is small interface to call functions from the
+//! [Hermit unikernel](https://github.com/hermit-os/kernel).
+
+#![no_std]
+#![allow(nonstandard_style)]
+#![allow(dead_code)]
+#![allow(clippy::missing_safety_doc)]
+#![allow(clippy::result_unit_err)]
+
+pub mod errno;
+
+use core::ffi::c_char;
+pub use core::ffi::{c_int, c_short, c_void};
+
+pub use self::errno::*;
+
+/// A thread handle type
+pub type Tid = u32;
+
+/// Maximum number of priorities
+pub const NO_PRIORITIES: usize = 31;
+
+/// Priority of a thread
+#[derive(PartialEq, Eq, PartialOrd, Ord, Debug, Clone, Copy)]
+pub struct Priority(u8);
+
+impl Priority {
+	pub const fn into(self) -> u8 {
+		self.0
+	}
+
+	pub const fn from(x: u8) -> Self {
+		Priority(x)
+	}
+}
+
+pub const HIGH_PRIO: Priority = Priority::from(3);
+pub const NORMAL_PRIO: Priority = Priority::from(2);
+pub const LOW_PRIO: Priority = Priority::from(1);
+
+pub const FUTEX_RELATIVE_TIMEOUT: u32 = 1;
+pub const CLOCK_REALTIME: clockid_t = 1;
+pub const CLOCK_MONOTONIC: clockid_t = 4;
+pub const STDIN_FILENO: c_int = 0;
+pub const STDOUT_FILENO: c_int = 1;
+pub const STDERR_FILENO: c_int = 2;
+pub const O_RDONLY: i32 = 0o0;
+pub const O_WRONLY: i32 = 0o1;
+pub const O_RDWR: i32 = 0o2;
+pub const O_CREAT: i32 = 0o100;
+pub const O_EXCL: i32 = 0o200;
+pub const O_TRUNC: i32 = 0o1000;
+pub const O_APPEND: i32 = 0o2000;
+pub const O_NONBLOCK: i32 = 0o4000;
+pub const O_DIRECTORY: i32 = 0o200000;
+pub const F_DUPFD: i32 = 0;
+pub const F_GETFD: i32 = 1;
+pub const F_SETFD: i32 = 2;
+pub const F_GETFL: i32 = 3;
+pub const F_SETFL: i32 = 4;
+pub const FD_CLOEXEC: i32 = 1;
+
+/// returns true if file descriptor `fd` is a tty
+pub fn isatty(_fd: c_int) -> bool {
+	false
+}
+
+/// `timespec` is used by `clock_gettime` to retrieve the
+/// current time
+#[derive(Default, Copy, Clone, Debug)]
+#[repr(C)]
+pub struct timespec {
+	/// seconds
+	pub tv_sec: time_t,
+	/// nanoseconds
+	pub tv_nsec: i32,
+}
+
+#[repr(C)]
+#[derive(Debug, Copy, Clone)]
+pub struct timeval {
+	pub tv_sec: time_t,
+	pub tv_usec: suseconds_t,
+}
+
+/// The largest number `rand` will return
+pub const RAND_MAX: i32 = 2_147_483_647;
+
+pub const AF_UNSPEC: i32 = 0;
+/// Socket address family: IPv4
+pub const AF_INET: i32 = 3;
+/// Socket address family: IPv6
+pub const AF_INET6: i32 = 1;
+/// Socket address family: VSOCK protocol for hypervisor-guest communication
+pub const AF_VSOCK: i32 = 2;
+pub const IPPROTO_IP: i32 = 0;
+pub const IPPROTO_IPV6: i32 = 41;
+pub const IPPROTO_UDP: i32 = 17;
+pub const IPPROTO_TCP: i32 = 6;
+pub const IPV6_ADD_MEMBERSHIP: i32 = 12;
+pub const IPV6_DROP_MEMBERSHIP: i32 = 13;
+pub const IPV6_MULTICAST_LOOP: i32 = 19;
+pub const IPV6_V6ONLY: i32 = 27;
+pub const IP_TOS: i32 = 1;
+pub const IP_TTL: i32 = 2;
+pub const IP_MULTICAST_TTL: i32 = 5;
+pub const IP_MULTICAST_LOOP: i32 = 7;
+pub const IP_ADD_MEMBERSHIP: i32 = 3;
+pub const IP_DROP_MEMBERSHIP: i32 = 4;
+pub const SHUT_RD: i32 = 0;
+pub const SHUT_WR: i32 = 1;
+pub const SHUT_RDWR: i32 = 2;
+/// Socket supports datagrams (connectionless,  unreliable  messages of a fixed maximum length)
+pub const SOCK_DGRAM: i32 = 2;
+/// Socket provides sequenced, reliable,  two-way,  connection-based byte streams.
+pub const SOCK_STREAM: i32 = 1;
+/// Set the O_NONBLOCK file status flag on the open socket
+pub const SOCK_NONBLOCK: i32 = 0o4000;
+/// Set  the  close-on-exec flag on the new socket
+pub const SOCK_CLOEXEC: i32 = 0o40000;
+pub const SOL_SOCKET: i32 = 4095;
+pub const SO_REUSEADDR: i32 = 0x0004;
+pub const SO_KEEPALIVE: i32 = 0x0008;
+pub const SO_BROADCAST: i32 = 0x0020;
+pub const SO_LINGER: i32 = 0x0080;
+pub const SO_SNDBUF: i32 = 0x1001;
+pub const SO_RCVBUF: i32 = 0x1002;
+pub const SO_SNDTIMEO: i32 = 0x1005;
+pub const SO_RCVTIMEO: i32 = 0x1006;
+pub const SO_ERROR: i32 = 0x1007;
+pub const TCP_NODELAY: i32 = 1;
+pub const MSG_PEEK: i32 = 1;
+pub const FIONBIO: i32 = 0x8008667eu32 as i32;
+pub const EAI_AGAIN: i32 = 2;
+pub const EAI_BADFLAGS: i32 = 3;
+pub const EAI_FAIL: i32 = 4;
+pub const EAI_FAMILY: i32 = 5;
+pub const EAI_MEMORY: i32 = 6;
+pub const EAI_NODATA: i32 = 7;
+pub const EAI_NONAME: i32 = 8;
+pub const EAI_SERVICE: i32 = 9;
+pub const EAI_SOCKTYPE: i32 = 10;
+pub const EAI_SYSTEM: i32 = 11;
+pub const EAI_OVERFLOW: i32 = 14;
+pub const POLLIN: i16 = 0x1;
+pub const POLLPRI: i16 = 0x2;
+pub const POLLOUT: i16 = 0x4;
+pub const POLLERR: i16 = 0x8;
+pub const POLLHUP: i16 = 0x10;
+pub const POLLNVAL: i16 = 0x20;
+pub const POLLRDNORM: i16 = 0x040;
+pub const POLLRDBAND: i16 = 0x080;
+pub const POLLWRNORM: i16 = 0x0100;
+pub const POLLWRBAND: i16 = 0x0200;
+pub const POLLRDHUP: i16 = 0x2000;
+pub const EFD_SEMAPHORE: i16 = 0o1;
+pub const EFD_NONBLOCK: i16 = 0o4000;
+pub const EFD_CLOEXEC: i16 = 0o40000;
+pub const IOV_MAX: usize = 1024;
+/// VMADDR_CID_ANY means that any address is possible for binding
+pub const VMADDR_CID_ANY: u32 = u32::MAX;
+pub const VMADDR_CID_HYPERVISOR: u32 = 0;
+pub const VMADDR_CID_LOCAL: u32 = 1;
+pub const VMADDR_CID_HOST: u32 = 2;
+pub type sa_family_t = u8;
+pub type socklen_t = u32;
+pub type in_addr_t = u32;
+pub type in_port_t = u16;
+pub type time_t = i64;
+pub type useconds_t = u32;
+pub type suseconds_t = i32;
+pub type nfds_t = usize;
+pub type sem_t = *const c_void;
+pub type pid_t = i32;
+pub type clockid_t = i32;
+
+#[repr(C)]
+#[derive(Debug, Copy, Clone, Default)]
+pub struct in_addr {
+	pub s_addr: in_addr_t,
+}
+
+#[repr(C, align(4))]
+#[derive(Debug, Copy, Clone, Default)]
+pub struct in6_addr {
+	pub s6_addr: [u8; 16],
+}
+
+#[repr(C)]
+#[derive(Debug, Copy, Clone, Default)]
+pub struct sockaddr {
+	pub sa_len: u8,
+	pub sa_family: sa_family_t,
+	pub sa_data: [c_char; 14],
+}
+
+#[repr(C)]
+#[derive(Debug, Copy, Clone, Default)]
+pub struct sockaddr_vm {
+	pub svm_len: u8,
+	pub svm_family: sa_family_t,
+	pub svm_reserved1: u16,
+	pub svm_port: u32,
+	pub svm_cid: u32,
+	pub svm_zero: [u8; 4],
+}
+
+#[repr(C)]
+#[derive(Debug, Copy, Clone, Default)]
+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],
+}
+
+#[repr(C)]
+#[derive(Debug, Copy, Clone, Default)]
+pub struct sockaddr_in6 {
+	pub sin6_len: u8,
+	pub sin6_family: sa_family_t,
+	pub sin6_port: in_port_t,
+	pub sin6_flowinfo: u32,
+	pub sin6_addr: in6_addr,
+	pub sin6_scope_id: u32,
+}
+
+#[repr(C)]
+#[derive(Debug, Copy, Clone)]
+pub struct addrinfo {
+	pub ai_flags: i32,
+	pub ai_family: i32,
+	pub ai_socktype: i32,
+	pub ai_protocol: i32,
+	pub ai_addrlen: socklen_t,
+	pub ai_canonname: *mut c_char,
+	pub ai_addr: *mut sockaddr,
+	pub ai_next: *mut addrinfo,
+}
+
+#[repr(C)]
+#[derive(Debug, Copy, Clone)]
+pub struct sockaddr_storage {
+	pub s2_len: u8,
+	pub ss_family: sa_family_t,
+	__ss_pad1: [u8; 6],
+	__ss_align: i64,
+	__ss_pad2: [u8; 112],
+}
+
+#[repr(C)]
+#[derive(Debug, Copy, Clone, Default)]
+pub struct ip_mreq {
+	pub imr_multiaddr: in_addr,
+	pub imr_interface: in_addr,
+}
+
+#[repr(C)]
+#[derive(Debug, Copy, Clone, Default)]
+pub struct ipv6_mreq {
+	pub ipv6mr_multiaddr: in6_addr,
+	pub ipv6mr_interface: u32,
+}
+
+#[repr(C)]
+#[derive(Debug, Copy, Clone, Default)]
+pub struct linger {
+	pub l_onoff: i32,
+	pub l_linger: i32,
+}
+
+#[repr(C)]
+#[derive(Debug, Copy, Clone, Default)]
+pub struct pollfd {
+	/// file descriptor
+	pub fd: i32,
+	/// events to look for
+	pub events: i16,
+	/// events returned
+	pub revents: i16,
+}
+
+#[repr(C)]
+#[derive(Debug, Default, Copy, Clone)]
+pub struct stat {
+	pub st_dev: u64,
+	pub st_ino: u64,
+	pub st_nlink: u64,
+	/// access permissions
+	pub st_mode: u32,
+	/// user id
+	pub st_uid: u32,
+	/// group id
+	pub st_gid: u32,
+	/// device id
+	pub st_rdev: u64,
+	/// size in bytes
+	pub st_size: i64,
+	/// block size
+	pub st_blksize: i64,
+	/// size in blocks
+	pub st_blocks: i64,
+	/// time of last access
+	pub st_atim: timespec,
+	/// time of last modification
+	pub st_mtim: timespec,
+	/// time of last status change
+	pub st_ctim: timespec,
+}
+
+#[repr(C)]
+#[derive(Debug, Clone, Copy)]
+pub struct dirent64 {
+	/// 64-bit inode number
+	pub d_ino: u64,
+	/// 64-bit offset to next structure
+	pub d_off: i64,
+	/// Size of this dirent
+	pub d_reclen: u16,
+	/// File type
+	pub d_type: u8,
+	/// Filename (null-terminated)
+	pub d_name: [c_char; 256],
+}
+
+#[repr(C)]
+#[derive(Debug, Clone, Copy)]
+/// Describes  a  region  of  memory, beginning at `iov_base` address and with the size of `iov_len` bytes.
+pub struct iovec {
+	/// Starting address
+	pub iov_base: *mut c_void,
+	/// Size of the memory pointed to by iov_base.
+	pub iov_len: usize,
+}
+
+pub const DT_UNKNOWN: u8 = 0;
+pub const DT_FIFO: u8 = 1;
+pub const DT_CHR: u8 = 2;
+pub const DT_DIR: u8 = 4;
+pub const DT_BLK: u8 = 6;
+pub const DT_REG: u8 = 8;
+pub const DT_LNK: u8 = 10;
+pub const DT_SOCK: u8 = 12;
+pub const DT_WHT: u8 = 14;
+
+pub const S_IFIFO: u32 = 0o1_0000;
+pub const S_IFCHR: u32 = 0o2_0000;
+pub const S_IFBLK: u32 = 0o6_0000;
+pub const S_IFDIR: u32 = 0o4_0000;
+pub const S_IFREG: u32 = 0o10_0000;
+pub const S_IFLNK: u32 = 0o12_0000;
+pub const S_IFSOCK: u32 = 0o14_0000;
+pub const S_IFMT: u32 = 0o17_0000;
+
+/// Pages may not be accessed.
+pub const PROT_NONE: u32 = 0;
+/// Indicates that the memory region should be readable.
+pub const PROT_READ: u32 = 1 << 0;
+/// Indicates that the memory region should be writable.
+pub const PROT_WRITE: u32 = 1 << 1;
+/// Indicates that the memory region should be executable.
+pub const PROT_EXEC: u32 = 1 << 2;
+
+/// The file offset is set to offset bytes.
+pub const SEEK_SET: i32 = 0;
+/// The file offset is set to its current location plus offset bytes.
+pub const SEEK_CUR: i32 = 1;
+/// The file offset is set to the size of the file plus offset bytes.
+pub const SEEK_END: i32 = 2;
+
+// symbols, which are part of the library operating system
+extern "C" {
+	/// Get the last error number from the thread local storage
+	#[link_name = "sys_get_errno"]
+	pub fn get_errno() -> i32;
+
+	/// Get the last error number from the thread local storage
+	#[link_name = "sys_errno"]
+	pub fn errno() -> i32;
+
+	/// Get memory page size
+	#[link_name = "sys_getpagesize"]
+	pub fn getpagesize() -> i32;
+
+	/// Creates a new virtual memory mapping of the `size` specified with
+	/// protection bits specified in `prot_flags`.
+	#[link_name = "sys_mmap"]
+	pub fn mmap(size: usize, prot_flags: u32, ret: &mut *mut u8) -> i32;
+
+	/// Unmaps memory at the specified `ptr` for `size` bytes.
+	#[link_name = "sys_munmap"]
+	pub fn munmap(ptr: *mut u8, size: usize) -> i32;
+
+	/// Configures the protections associated with a region of virtual memory
+	/// starting at `ptr` and going to `size`.
+	///
+	/// Returns 0 on success and an error code on failure.
+	#[link_name = "sys_mprotect"]
+	pub fn mprotect(ptr: *mut u8, size: usize, prot_flags: u32) -> i32;
+
+	/// If the value at address matches the expected value, park the current thread until it is either
+	/// woken up with [`futex_wake`] (returns 0) or an optional timeout elapses (returns -ETIMEDOUT).
+	///
+	/// Setting `timeout` to null means the function will only return if [`futex_wake`] is called.
+	/// Otherwise, `timeout` is interpreted as an absolute time measured with [`CLOCK_MONOTONIC`].
+	/// If [`FUTEX_RELATIVE_TIMEOUT`] is set in `flags` the timeout is understood to be relative
+	/// to the current time.
+	///
+	/// Returns -EINVAL if `address` is null, the timeout is negative or `flags` contains unknown values.
+	#[link_name = "sys_futex_wait"]
+	pub fn futex_wait(
+		address: *mut u32,
+		expected: u32,
+		timeout: *const timespec,
+		flags: u32,
+	) -> i32;
+
+	/// Wake `count` threads waiting on the futex at `address`. Returns the number of threads
+	/// woken up (saturates to `i32::MAX`). If `count` is `i32::MAX`, wake up all matching
+	/// waiting threads. If `count` is negative or `address` is null, returns -EINVAL.
+	#[link_name = "sys_futex_wake"]
+	pub fn futex_wake(address: *mut u32, count: i32) -> i32;
+
+	/// sem_init() initializes the unnamed semaphore at the address
+	/// pointed to by `sem`.  The `value` argument specifies the
+	/// initial value for the semaphore. If `pshared` is nonzero,
+	/// then the semaphore is shared between processes (currently
+	/// not supported).
+	#[link_name = "sys_sem_init"]
+	pub fn sem_init(sem: *mut sem_t, pshared: i32, value: u32) -> i32;
+
+	/// sem_destroy() frees the unnamed semaphore at the address
+	/// pointed to by `sem`.
+	#[link_name = "sys_sem_destroy"]
+	pub fn sem_destroy(sem: *mut sem_t) -> i32;
+
+	/// sem_post() increments the semaphore pointed to by `sem`.
+	/// If the semaphore's value consequently becomes greater
+	/// than zero, then another thread blocked in a sem_wait call
+	/// will be woken up and proceed to lock the semaphore.
+	#[link_name = "sys_sem_post"]
+	pub fn sem_post(sem: *mut sem_t) -> i32;
+
+	/// try to decrement a semaphore
+	///
+	/// sem_trywait() is the same as sem_timedwait(), except that
+	/// if the  decrement cannot be immediately performed, then  call
+	/// returns a negative value instead of blocking.
+	#[link_name = "sys_sem_trywait"]
+	pub fn sem_trywait(sem: *mut sem_t) -> i32;
+
+	/// decrement a semaphore
+	///
+	/// sem_timedwait() decrements the semaphore pointed to by `sem`.
+	/// If the semaphore's value is greater than zero, then the
+	/// the function returns immediately. If the semaphore currently
+	/// has the value zero, then the call blocks until either
+	/// it becomes possible to perform the decrement of the time limit
+	/// to wait for the semaphore is expired. A time limit `ms` of
+	/// means infinity waiting time.
+	#[link_name = "sys_sem_timedwait"]
+	pub fn sem_timedwait(sem: *mut sem_t, abs_timeout: *const timespec) -> i32;
+
+	/// Determines the id of the current thread
+	#[link_name = "sys_getpid"]
+	pub fn getpid() -> pid_t;
+
+	/// cause normal termination and return `status`
+	/// to the host system
+	#[link_name = "sys_exit"]
+	pub fn exit(status: i32) -> !;
+
+	/// cause abnormal termination
+	#[link_name = "sys_abort"]
+	pub fn abort() -> !;
+
+	/// suspend execution for microsecond intervals
+	///
+	/// The usleep() function suspends execution of the calling
+	/// thread for (at least) `usecs` microseconds.
+	#[link_name = "sys_usleep"]
+	pub fn usleep(usecs: u64);
+
+	/// suspend thread execution for an interval measured in nanoseconds
+	#[link_name = "sys_nanosleep"]
+	pub fn nanosleep(req: *const timespec) -> i32;
+
+	/// spawn a new thread
+	///
+	/// spawn() starts a new thread. The new thread starts execution
+	/// by invoking `func(usize)`; `arg` is passed as the argument
+	/// to `func`. `prio` defines the priority of the new thread,
+	/// which can be between `LOW_PRIO` and `HIGH_PRIO`.
+	/// `core_id` defines the core, where the thread is located.
+	/// A negative value give the operating system the possibility
+	/// to select the core by its own.
+	#[link_name = "sys_spawn"]
+	pub fn spawn(
+		id: *mut Tid,
+		func: extern "C" fn(usize),
+		arg: usize,
+		prio: u8,
+		core_id: isize,
+	) -> i32;
+
+	/// spawn a new thread with user-specified stack size
+	///
+	/// spawn2() starts a new thread. The new thread starts execution
+	/// by invoking `func(usize)`; `arg` is passed as the argument
+	/// to `func`. `prio` defines the priority of the new thread,
+	/// which can be between `LOW_PRIO` and `HIGH_PRIO`.
+	/// `core_id` defines the core, where the thread is located.
+	/// A negative value give the operating system the possibility
+	/// to select the core by its own.
+	/// In contrast to spawn(), spawn2() is able to define the
+	/// stack size.
+	#[link_name = "sys_spawn2"]
+	pub fn spawn2(
+		func: extern "C" fn(usize),
+		arg: usize,
+		prio: u8,
+		stack_size: usize,
+		core_id: isize,
+	) -> Tid;
+
+	/// join with a terminated thread
+	///
+	/// The join() function waits for the thread specified by `id`
+	/// to terminate.
+	#[link_name = "sys_join"]
+	pub fn join(id: Tid) -> i32;
+
+	/// yield the processor
+	///
+	/// causes the calling thread to relinquish the CPU. The thread
+	/// is moved to the end of the queue for its static priority.
+	#[link_name = "sys_yield"]
+	pub fn yield_now();
+
+	/// get current time
+	///
+	/// The clock_gettime() functions allow the calling thread
+	/// to retrieve the value used by a clock which is specified
+	/// by `clockid`.
+	///
+	/// `CLOCK_REALTIME`: the system's real time clock,
+	/// expressed as the amount of time since the Epoch.
+	///
+	/// `CLOCK_MONOTONIC`: clock that increments monotonically,
+	/// tracking the time since an arbitrary point
+	#[link_name = "sys_clock_gettime"]
+	pub fn clock_gettime(clockid: clockid_t, tp: *mut timespec) -> i32;
+
+	/// open and possibly create a file
+	///
+	/// The open() system call opens the file specified by `name`.
+	/// If the specified file does not exist, it may optionally
+	/// be created by open().
+	#[link_name = "sys_open"]
+	pub fn open(name: *const c_char, flags: i32, mode: i32) -> i32;
+
+	/// open a directory
+	///
+	/// The opendir() system call opens the directory specified by `name`.
+	#[deprecated(since = "0.4.0", note = "please use `open`")]
+	#[link_name = "sys_opendir"]
+	pub fn opendir(name: *const c_char) -> i32;
+
+	/// delete the file it refers to `name`
+	#[link_name = "sys_unlink"]
+	pub fn unlink(name: *const c_char) -> i32;
+
+	/// remove directory it refers to `name`
+	#[link_name = "sys_rmdir"]
+	pub fn rmdir(name: *const c_char) -> i32;
+
+	/// stat
+	#[link_name = "sys_stat"]
+	pub fn stat(name: *const c_char, stat: *mut stat) -> i32;
+
+	/// lstat
+	#[link_name = "sys_lstat"]
+	pub fn lstat(name: *const c_char, stat: *mut stat) -> i32;
+
+	/// fstat
+	#[link_name = "sys_fstat"]
+	pub fn fstat(fd: i32, stat: *mut stat) -> i32;
+
+	/// Returns an estimate of the default amount of parallelism
+	/// a program should use. This number often corresponds to the
+	/// amount of CPUs a computer has, but it may diverge in
+	/// various cases.
+	#[link_name = "sys_available_parallelism"]
+	pub fn available_parallelism() -> usize;
+
+	/// determines the number of activated processors
+	#[deprecated(since = "0.4.0", note = "please use `available_parallelism`")]
+	#[link_name = "sys_get_processor_count"]
+	pub fn get_processor_count() -> usize;
+
+	#[link_name = "sys_malloc"]
+	pub fn malloc(size: usize, align: usize) -> *mut u8;
+
+	#[link_name = "sys_alloc"]
+	pub fn alloc(size: usize, align: usize) -> *mut u8;
+
+	#[link_name = "sys_alloc_zeroed"]
+	pub fn alloc_zeroed(size: usize, align: usize) -> *mut u8;
+
+	#[link_name = "sys_realloc"]
+	pub fn realloc(ptr: *mut u8, size: usize, align: usize, new_size: usize) -> *mut u8;
+
+	#[link_name = "sys_free"]
+	pub fn free(ptr: *mut u8, size: usize, align: usize);
+
+	#[link_name = "sys_dealloc"]
+	pub fn dealloc(ptr: *mut u8, size: usize, align: usize);
+
+	#[link_name = "sys_notify"]
+	pub fn notify(id: usize, count: i32) -> i32;
+
+	#[doc(hidden)]
+	#[link_name = "sys_add_queue"]
+	pub fn add_queue(id: usize, timeout_ns: i64) -> i32;
+
+	#[doc(hidden)]
+	#[link_name = "sys_wait"]
+	pub fn wait(id: usize) -> i32;
+
+	#[doc(hidden)]
+	#[link_name = "sys_init_queue"]
+	pub fn init_queue(id: usize) -> i32;
+
+	#[doc(hidden)]
+	#[link_name = "sys_destroy_queue"]
+	pub fn destroy_queue(id: usize) -> i32;
+
+	/// initialize the network stack
+	#[link_name = "sys_network_init"]
+	pub fn network_init() -> i32;
+
+	/// Add current task to the queue of blocked tasks. After calling `block_current_task`,
+	/// call `yield_now` to switch to another task.
+	#[link_name = "sys_block_current_task"]
+	pub fn block_current_task();
+
+	/// Add current task to the queue of blocked tasks, but wake it when `timeout` milliseconds
+	/// have elapsed.
+	///
+	/// After calling `block_current_task`, call `yield_now` to switch to another task.
+	#[link_name = "sys_block_current_task_with_timeout"]
+	pub fn block_current_task_with_timeout(timeout: u64);
+
+	/// Wakeup task with the thread id `tid`
+	#[link_name = "sys_wakeup_taskt"]
+	pub fn wakeup_task(tid: Tid);
+
+	/// The system call `getaddrbyname` determine the network host entry.
+	/// It expects an array of u8 with a size of in_addr or of in6_addr.
+	/// The result of the DNS request will be stored in this array.
+	///
+	/// # Example
+	///
+	/// ```
+	/// use hermit_abi::in_addr;
+	/// let c_string = std::ffi::CString::new("rust-lang.org").expect("CString::new failed");
+	/// let name = c_string.into_raw();
+	/// let mut inaddr: in_addr = Default::default();
+	/// let _ = unsafe {
+	///         hermit_abi::getaddrbyname(
+	///                 name,
+	///                 &mut inaddr as *mut _ as *mut u8,
+	///                 std::mem::size_of::<in_addr>(),
+	///         )
+	/// };
+	///
+	/// // retake pointer to free memory
+	/// let _ = CString::from_raw(name);
+	/// ```
+	#[link_name = "sys_getaddrbyname"]
+	pub fn getaddrbyname(name: *const c_char, inaddr: *mut u8, len: usize) -> i32;
+
+	#[link_name = "sys_accept"]
+	pub fn accept(s: i32, addr: *mut sockaddr, addrlen: *mut socklen_t) -> i32;
+
+	/// bind a name to a socket
+	#[link_name = "sys_bind"]
+	pub fn bind(s: i32, name: *const sockaddr, namelen: socklen_t) -> i32;
+
+	#[link_name = "sys_connect"]
+	pub fn connect(s: i32, name: *const sockaddr, namelen: socklen_t) -> i32;
+
+	/// read from a file descriptor
+	///
+	/// read() attempts to read `len` bytes of data from the object
+	/// referenced by the descriptor `fd` into the buffer pointed
+	/// to by `buf`.
+	#[link_name = "sys_read"]
+	pub fn read(fd: i32, buf: *mut u8, len: usize) -> isize;
+
+	/// `read()` attempts to read `nbyte` of data to the object referenced by the
+	/// descriptor `fd` from a buffer. `read()` performs the same
+	/// action, but scatters the input data from the `iovcnt` buffers specified by the
+	/// members of the iov array: `iov[0], iov[1], ..., iov[iovcnt-1]`.
+	///
+	/// ```
+	/// struct iovec {
+	///     char   *iov_base;  /* Base address. */
+	///     size_t iov_len;    /* Length. */
+	/// };
+	/// ```
+	///
+	/// Each `iovec` entry specifies the base address and length of an area in memory from
+	/// which data should be written.  `readv()` will always fill an completely
+	/// before proceeding to the next.
+	#[link_name = "sys_readv"]
+	pub fn readv(fd: i32, iov: *const iovec, iovcnt: usize) -> isize;
+
+	/// `getdents64` reads directory entries from the directory referenced
+	/// by the file descriptor `fd` into the buffer pointed to by `buf`.
+	#[link_name = "sys_getdents64"]
+	pub fn getdents64(fd: i32, dirp: *mut dirent64, count: usize) -> i64;
+
+	/// 'mkdir' attempts to create a directory,
+	/// it returns 0 on success and -1 on error
+	#[link_name = "sys_mkdir"]
+	pub fn mkdir(name: *const i8, mode: u32) -> i32;
+
+	/// Fill `len` bytes in `buf` with cryptographically secure random data.
+	///
+	/// Returns either the number of bytes written to buf (a positive value) or
+	/// * `-EINVAL` if `flags` contains unknown flags.
+	/// * `-ENOSYS` if the system does not support random data generation.
+	#[link_name = "sys_read_entropy"]
+	pub fn read_entropy(buf: *mut u8, len: usize, flags: u32) -> isize;
+
+	/// receive() a message from a socket
+	#[link_name = "sys_recv"]
+	pub fn recv(socket: i32, buf: *mut u8, len: usize, flags: i32) -> isize;
+
+	/// receive() a message from a socket
+	#[link_name = "sys_recvfrom"]
+	pub fn recvfrom(
+		socket: i32,
+		buf: *mut u8,
+		len: usize,
+		flags: i32,
+		addr: *mut sockaddr,
+		addrlen: *mut socklen_t,
+	) -> isize;
+
+	/// The fseek() function sets the file position indicator for the stream pointed to by stream.
+	/// The new position, measured in bytes, is obtained by adding offset bytes to the position
+	/// specified by whence.  If whence is set to SEEK_SET, SEEK_CUR, or SEEK_END, the offset is
+	/// relative to the start of the file, the current position indicator, or end-of-file,
+	/// respectively.
+	#[link_name = "sys_lseek"]
+	pub fn lseek(fd: i32, offset: isize, whence: i32) -> isize;
+
+	/// write to a file descriptor
+	///
+	/// write() attempts to write `len` of data to the object
+	/// referenced by the descriptor `fd` from the
+	/// buffer pointed to by `buf`.
+	#[link_name = "sys_write"]
+	pub fn write(fd: i32, buf: *const u8, len: usize) -> isize;
+
+	/// `write()` attempts to write `nbyte` of data to the object referenced by the
+	/// descriptor `fd` from a buffer. `writev()` performs the same
+	/// action, but gathers the output data from the `iovcnt` buffers specified by the
+	/// members of the iov array: `iov[0], iov[1], ..., iov[iovcnt-1]`.
+	///
+	/// ```
+	/// struct iovec {
+	///     char   *iov_base;  /* Base address. */
+	///     size_t iov_len;    /* Length. */
+	/// };
+	/// ```
+	///
+	/// Each `iovec` entry specifies the base address and length of an area in memory from
+	/// which data should be written.  `writev()` will always write a
+	/// complete area before proceeding to the next.
+	#[link_name = "sys_writev"]
+	pub fn writev(fd: i32, iov: *const iovec, iovcnt: usize) -> isize;
+
+	/// close a file descriptor
+	///
+	/// The close() call deletes a file descriptor `fd` from the object
+	/// reference table.
+	#[link_name = "sys_close"]
+	pub fn close(fd: i32) -> i32;
+
+	/// duplicate an existing file descriptor
+	#[link_name = "sys_dup"]
+	pub fn dup(fd: i32) -> i32;
+
+	#[link_name = "sys_getpeername"]
+	pub fn getpeername(s: i32, name: *mut sockaddr, namelen: *mut socklen_t) -> i32;
+
+	#[link_name = "sys_getsockname"]
+	pub fn getsockname(s: i32, name: *mut sockaddr, namelen: *mut socklen_t) -> i32;
+
+	#[link_name = "sys_getsockopt"]
+	pub fn getsockopt(
+		s: i32,
+		level: i32,
+		optname: i32,
+		optval: *mut c_void,
+		optlen: *mut socklen_t,
+	) -> i32;
+
+	#[link_name = "sys_setsockopt"]
+	pub fn setsockopt(
+		s: i32,
+		level: i32,
+		optname: i32,
+		optval: *const c_void,
+		optlen: socklen_t,
+	) -> i32;
+
+	#[link_name = "sys_ioctl"]
+	pub fn ioctl(s: i32, cmd: i32, argp: *mut c_void) -> i32;
+
+	#[link_name = "sys_fcntl"]
+	pub fn fcntl(fd: i32, cmd: i32, arg: i32) -> i32;
+
+	/// `eventfd` creates an linux-like "eventfd object" that can be used
+	/// as an event wait/notify mechanism by user-space applications, and by
+	/// the kernel to notify user-space applications of events. The
+	/// object contains an unsigned 64-bit integer counter
+	/// that is maintained by the kernel. This counter is initialized
+	/// with the value specified in the argument `initval`.
+	///
+	/// As its return value, `eventfd` returns a new file descriptor that
+	/// can be used to refer to the eventfd object.
+	///
+	/// The following values may be bitwise set in flags to change the
+	/// behavior of `eventfd`:
+	///
+	/// `EFD_NONBLOCK`: Set the file descriptor in non-blocking mode
+	/// `EFD_SEMAPHORE`: Provide semaphore-like semantics for reads
+	/// from the new file descriptor.
+	#[link_name = "sys_eventfd"]
+	pub fn eventfd(initval: u64, flags: i16) -> i32;
+
+	/// The unix-like `poll` waits for one of a set of file descriptors
+	/// to become ready to perform I/O. The set of file descriptors to be
+	/// monitored is specified in the `fds` argument, which is an array
+	/// of structures of `pollfd`.
+	#[link_name = "sys_poll"]
+	pub fn poll(fds: *mut pollfd, nfds: nfds_t, timeout: i32) -> i32;
+
+	/// listen for connections on a socket
+	///
+	/// The `backlog` parameter defines the maximum length for the queue of pending
+	/// connections. Currently, the `backlog` must be one.
+	#[link_name = "sys_listen"]
+	pub fn listen(s: i32, backlog: i32) -> i32;
+
+	#[link_name = "sys_send"]
+	pub fn send(s: i32, mem: *const c_void, len: usize, flags: i32) -> isize;
+
+	#[link_name = "sys_sendto"]
+	pub fn sendto(
+		s: i32,
+		mem: *const c_void,
+		len: usize,
+		flags: i32,
+		to: *const sockaddr,
+		tolen: socklen_t,
+	) -> isize;
+
+	/// shut down part of a full-duplex connection
+	#[link_name = "sys_shutdown"]
+	pub fn shutdown(sockfd: i32, how: i32) -> i32;
+
+	#[deprecated(since = "0.4.0", note = "use `shutdown` instead")]
+	#[link_name = "sys_shutdown_socket"]
+	pub fn shutdown_socket(s: i32, how: i32) -> i32;
+
+	#[link_name = "sys_socket"]
+	pub fn socket(domain: i32, type_: i32, protocol: i32) -> i32;
+
+	#[link_name = "sys_freeaddrinfo"]
+	pub fn freeaddrinfo(ai: *mut addrinfo);
+
+	#[link_name = "sys_getaddrinfo"]
+	pub fn getaddrinfo(
+		nodename: *const c_char,
+		servname: *const c_char,
+		hints: *const addrinfo,
+		res: *mut *mut addrinfo,
+	) -> i32;
+
+	fn sys_get_priority() -> u8;
+	fn sys_set_priority(tid: Tid, prio: u8);
+}
+
+/// Determine the priority of the current thread
+#[inline(always)]
+pub unsafe fn get_priority() -> Priority {
+	Priority::from(sys_get_priority())
+}
+
+/// Determine the priority of the current thread
+#[inline(always)]
+pub unsafe fn set_priority(tid: Tid, prio: Priority) {
+	sys_set_priority(tid, prio.into());
+}