Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

8 files changed, 902 insertions, 0 deletions

diff --git a/vendor/hermit-abi/.cargo-checksum.json b/vendor/hermit-abi/.cargo-checksum.json
new file mode 100644
index 000000000..5b4a93900
--- /dev/null
+++ b/vendor/hermit-abi/.cargo-checksum.json
@@ -0,0 +1 @@
+{"files":{"Cargo.toml":"9bd554080e32ce81c4741c85e81e70c4009ce5adbf5e8ffe9bda02b964b3208b","LICENSE-APACHE":"a60eea817514531668d7e00765731449fe14d059d3249e0bc93b36de45f759f2","LICENSE-MIT":"23f18e03dc49df91622fe2a76176497404e46ced8a715d9d2b67a7446571cca3","README.md":"322fadd63e558e5a10caf980cbedf83ac1546ba40fd992f54492e21ce54205af","src/lib.rs":"31fa39172e2e5310a2b2179456cfe3cadcd45443852a01b4a73a601a60bcf211","src/tcplistener.rs":"c6e2db06d4265fa0956851e1c965336d60c53ab21573729aae76ecfe0ccc84c3","src/tcpstream.rs":"38a17de54213faf9de217f6146ff86ee75b67d4404a532b1419903269200936b"},"package":"1ab7905ea95c6d9af62940f9d7dd9596d54c334ae2c15300c482051292d5637f"}
\ No newline at end of file
diff --git a/vendor/hermit-abi/Cargo.toml b/vendor/hermit-abi/Cargo.toml
new file mode 100644
index 000000000..81b32c9bf
--- /dev/null
+++ b/vendor/hermit-abi/Cargo.toml
@@ -0,0 +1,43 @@
+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies.
+#
+# If you are reading this file be aware that the original Cargo.toml
+# will likely look very different (and much more reasonable).
+# See Cargo.toml.orig for the original contents.
+
+[package]
+edition = "2021"
+name = "hermit-abi"
+version = "0.2.0"
+authors = ["Stefan Lankes"]
+description = "hermit-abi is small interface to call functions from the unikernel RustyHermit.\nIt is used to build the target `x86_64-unknown-hermit`.\n"
+documentation = "https://hermitcore.github.io/rusty-hermit/hermit_abi"
+readme = "README.md"
+keywords = ["unikernel", "libos"]
+categories = ["os"]
+license = "MIT/Apache-2.0"
+repository = "https://github.com/hermitcore/rusty-hermit"
+[package.metadata.docs.rs]
+default-target = "x86_64-unknown-hermit"
+features = ["docs"]
+[dependencies.compiler_builtins]
+version = "0.1"
+optional = true
+
+[dependencies.core]
+version = "1.0.0"
+optional = true
+package = "rustc-std-workspace-core"
+
+[dependencies.libc]
+version = "0.2.51"
+default-features = false
+
+[features]
+default = []
+docs = []
+rustc-dep-of-std = ["core", "compiler_builtins/rustc-dep-of-std", "libc/rustc-dep-of-std"]
diff --git a/vendor/hermit-abi/LICENSE-APACHE b/vendor/hermit-abi/LICENSE-APACHE
new file mode 100644
index 000000000..16fe87b06
--- /dev/null
+++ b/vendor/hermit-abi/LICENSE-APACHE
@@ -0,0 +1,201 @@
+                              Apache License
+                        Version 2.0, January 2004
+                     http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
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diff --git a/vendor/hermit-abi/LICENSE-MIT b/vendor/hermit-abi/LICENSE-MIT
new file mode 100644
index 000000000..31aa79387
--- /dev/null
+++ b/vendor/hermit-abi/LICENSE-MIT
@@ -0,0 +1,23 @@
+Permission is hereby granted, free of charge, to any
+person obtaining a copy of this software and associated
+documentation files (the "Software"), to deal in the
+Software without restriction, including without
+limitation the rights to use, copy, modify, merge,
+publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software
+is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice
+shall be included in all copies or substantial portions
+of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
+ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
+SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
+IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
diff --git a/vendor/hermit-abi/README.md b/vendor/hermit-abi/README.md
new file mode 100644
index 000000000..c75bfda0d
--- /dev/null
+++ b/vendor/hermit-abi/README.md
@@ -0,0 +1,22 @@
+# hermit-abi
+
+[![Crates.io](https://img.shields.io/crates/v/hermit-abi.svg)](https://crates.io/crates/hermit-abi)
+[![Documentation](https://img.shields.io/badge/docs-latest-blue.svg)](https://hermitcore.github.io/rusty-hermit/hermit_abi/)
+[![License](https://img.shields.io/crates/l/hermit-abi.svg)](https://img.shields.io/crates/l/hermit-abi.svg)
+
+This is small interface to call functions from the unikernel [RustyHermit](https://github.com/hermitcore/libhermit-rs).
+
+Please read the README of [RustyHermit](https://github.com/hermitcore/libhermit-rs) for more information.
+
+## License
+
+Licensed under either of
+
+* Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+* MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+
+at your option.
+
+## Contribution
+
+Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.
diff --git a/vendor/hermit-abi/src/lib.rs b/vendor/hermit-abi/src/lib.rs
new file mode 100644
index 000000000..7bb4a4cb0
--- /dev/null
+++ b/vendor/hermit-abi/src/lib.rs
@@ -0,0 +1,490 @@
+//! `hermit-abi` is small interface to call functions from the unikernel
+//! [RustyHermit](https://github.com/hermitcore/libhermit-rs).
+
+#![no_std]
+#![allow(clippy::missing_safety_doc)]
+#![allow(clippy::result_unit_err)]
+
+extern crate libc;
+
+pub mod tcplistener;
+pub mod tcpstream;
+
+use libc::c_void;
+
+// sysmbols, which are part of the library operating system
+
+extern "Rust" {
+	fn sys_secure_rand64() -> Option<u64>;
+	fn sys_secure_rand32() -> Option<u32>;
+}
+
+extern "C" {
+	fn sys_rand() -> u32;
+	fn sys_srand(seed: u32);
+	fn sys_get_processor_count() -> usize;
+	fn sys_malloc(size: usize, align: usize) -> *mut u8;
+	fn sys_realloc(ptr: *mut u8, size: usize, align: usize, new_size: usize) -> *mut u8;
+	fn sys_free(ptr: *mut u8, size: usize, align: usize);
+	fn sys_init_queue(ptr: usize) -> i32;
+	fn sys_notify(id: usize, count: i32) -> i32;
+	fn sys_add_queue(id: usize, timeout_ns: i64) -> i32;
+	fn sys_wait(id: usize) -> i32;
+	fn sys_destroy_queue(id: usize) -> i32;
+	fn sys_read(fd: i32, buf: *mut u8, len: usize) -> isize;
+	fn sys_write(fd: i32, buf: *const u8, len: usize) -> isize;
+	fn sys_close(fd: i32) -> i32;
+	fn sys_sem_init(sem: *mut *const c_void, value: u32) -> i32;
+	fn sys_sem_destroy(sem: *const c_void) -> i32;
+	fn sys_sem_post(sem: *const c_void) -> i32;
+	fn sys_sem_trywait(sem: *const c_void) -> i32;
+	fn sys_sem_timedwait(sem: *const c_void, ms: u32) -> i32;
+	fn sys_recmutex_init(recmutex: *mut *const c_void) -> i32;
+	fn sys_recmutex_destroy(recmutex: *const c_void) -> i32;
+	fn sys_recmutex_lock(recmutex: *const c_void) -> i32;
+	fn sys_recmutex_unlock(recmutex: *const c_void) -> i32;
+	fn sys_getpid() -> u32;
+	fn sys_exit(arg: i32) -> !;
+	fn sys_abort() -> !;
+	fn sys_usleep(usecs: u64);
+	fn sys_spawn(
+		id: *mut Tid,
+		func: extern "C" fn(usize),
+		arg: usize,
+		prio: u8,
+		core_id: isize,
+	) -> i32;
+	fn sys_spawn2(
+		func: extern "C" fn(usize),
+		arg: usize,
+		prio: u8,
+		stack_size: usize,
+		core_id: isize,
+	) -> Tid;
+	fn sys_join(id: Tid) -> i32;
+	fn sys_yield();
+	fn sys_clock_gettime(clock_id: u64, tp: *mut timespec) -> i32;
+	fn sys_open(name: *const i8, flags: i32, mode: i32) -> i32;
+	fn sys_unlink(name: *const i8) -> i32;
+	fn sys_network_init() -> i32;
+	fn sys_block_current_task();
+	fn sys_wakeup_task(tid: Tid);
+	fn sys_get_priority() -> u8;
+}
+
+/// 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);
+
+/// A handle, identifying a socket
+#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Default, Hash)]
+pub struct Handle(usize);
+
+pub const NSEC_PER_SEC: u64 = 1_000_000_000;
+pub const CLOCK_REALTIME: u64 = 1;
+pub const CLOCK_MONOTONIC: u64 = 4;
+pub const STDIN_FILENO: libc::c_int = 0;
+pub const STDOUT_FILENO: libc::c_int = 1;
+pub const STDERR_FILENO: libc::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;
+
+/// returns true if file descriptor `fd` is a tty
+pub fn isatty(_fd: libc::c_int) -> bool {
+	false
+}
+
+/// initialize the network stack
+pub fn network_init() -> i32 {
+	unsafe { sys_network_init() }
+}
+
+/// `timespec` is used by `clock_gettime` to retrieve the
+/// current time
+#[derive(Copy, Clone, Debug)]
+#[repr(C)]
+pub struct timespec {
+	/// seconds
+	pub tv_sec: i64,
+	/// nanoseconds
+	pub tv_nsec: i64,
+}
+
+/// Internet protocol version.
+#[derive(Debug, Hash, PartialEq, Eq, PartialOrd, Ord, Clone, Copy)]
+pub enum Version {
+	Unspecified,
+	Ipv4,
+	Ipv6,
+}
+
+/// A four-octet IPv4 address.
+#[derive(Debug, Hash, PartialEq, Eq, PartialOrd, Ord, Clone, Copy, Default)]
+pub struct Ipv4Address(pub [u8; 4]);
+
+/// A sixteen-octet IPv6 address.
+#[derive(Debug, Hash, PartialEq, Eq, PartialOrd, Ord, Clone, Copy, Default)]
+pub struct Ipv6Address(pub [u8; 16]);
+
+/// An internetworking address.
+#[derive(Debug, Hash, PartialEq, Eq, PartialOrd, Ord, Clone, Copy)]
+pub enum IpAddress {
+	/// An unspecified address.
+	/// May be used as a placeholder for storage where the address is not assigned yet.
+	Unspecified,
+	/// An IPv4 address.
+	Ipv4(Ipv4Address),
+	/// An IPv6 address.
+	Ipv6(Ipv6Address),
+}
+
+/// determines the number of activated processors
+#[inline(always)]
+pub unsafe fn get_processor_count() -> usize {
+	sys_get_processor_count()
+}
+
+#[doc(hidden)]
+#[inline(always)]
+pub unsafe fn malloc(size: usize, align: usize) -> *mut u8 {
+	sys_malloc(size, align)
+}
+
+#[doc(hidden)]
+#[inline(always)]
+pub unsafe fn realloc(ptr: *mut u8, size: usize, align: usize, new_size: usize) -> *mut u8 {
+	sys_realloc(ptr, size, align, new_size)
+}
+
+#[doc(hidden)]
+#[inline(always)]
+pub unsafe fn free(ptr: *mut u8, size: usize, align: usize) {
+	sys_free(ptr, size, align)
+}
+
+#[inline(always)]
+pub unsafe fn notify(id: usize, count: i32) -> i32 {
+	sys_notify(id, count)
+}
+
+#[doc(hidden)]
+#[inline(always)]
+pub unsafe fn add_queue(id: usize, timeout_ns: i64) -> i32 {
+	sys_add_queue(id, timeout_ns)
+}
+
+#[doc(hidden)]
+#[inline(always)]
+pub unsafe fn wait(id: usize) -> i32 {
+	sys_wait(id)
+}
+
+#[doc(hidden)]
+#[inline(always)]
+pub unsafe fn init_queue(id: usize) -> i32 {
+	sys_init_queue(id)
+}
+
+#[doc(hidden)]
+#[inline(always)]
+pub unsafe fn destroy_queue(id: usize) -> i32 {
+	sys_destroy_queue(id)
+}
+
+/// 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`.
+#[inline(always)]
+pub unsafe fn read(fd: i32, buf: *mut u8, len: usize) -> isize {
+	sys_read(fd, buf, len)
+}
+
+/// 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`.
+#[inline(always)]
+pub unsafe fn write(fd: i32, buf: *const u8, len: usize) -> isize {
+	sys_write(fd, buf, len)
+}
+
+/// close a file descriptor
+///
+/// The close() call deletes a file descriptor `fd` from the object
+/// reference table.
+#[inline(always)]
+pub unsafe fn close(fd: i32) -> i32 {
+	sys_close(fd)
+}
+
+/// sem_init() initializes the unnamed semaphore at the address
+/// pointed to by `sem`.  The `value` argument specifies the
+/// initial value for the semaphore.
+#[inline(always)]
+pub unsafe fn sem_init(sem: *mut *const c_void, value: u32) -> i32 {
+	sys_sem_init(sem, value)
+}
+
+/// sem_destroy() frees the unnamed semaphore at the address
+/// pointed to by `sem`.
+#[inline(always)]
+pub unsafe fn sem_destroy(sem: *const c_void) -> i32 {
+	sys_sem_destroy(sem)
+}
+
+/// 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.
+#[inline(always)]
+pub unsafe fn sem_post(sem: *const c_void) -> i32 {
+	sys_sem_post(sem)
+}
+
+/// 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.
+#[inline(always)]
+pub unsafe fn sem_trywait(sem: *const c_void) -> i32 {
+	sys_sem_trywait(sem)
+}
+
+/// 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.
+#[inline(always)]
+pub unsafe fn sem_timedwait(sem: *const c_void, ms: u32) -> i32 {
+	sys_sem_timedwait(sem, ms)
+}
+
+#[doc(hidden)]
+#[inline(always)]
+pub unsafe fn recmutex_init(recmutex: *mut *const c_void) -> i32 {
+	sys_recmutex_init(recmutex)
+}
+
+#[doc(hidden)]
+#[inline(always)]
+pub unsafe fn recmutex_destroy(recmutex: *const c_void) -> i32 {
+	sys_recmutex_destroy(recmutex)
+}
+
+#[doc(hidden)]
+#[inline(always)]
+pub unsafe fn recmutex_lock(recmutex: *const c_void) -> i32 {
+	sys_recmutex_lock(recmutex)
+}
+
+#[doc(hidden)]
+#[inline(always)]
+pub unsafe fn recmutex_unlock(recmutex: *const c_void) -> i32 {
+	sys_recmutex_unlock(recmutex)
+}
+
+/// Determines the id of the current thread
+#[inline(always)]
+pub unsafe fn getpid() -> u32 {
+	sys_getpid()
+}
+
+/// cause normal termination and return `arg`
+/// to the host system
+#[inline(always)]
+pub unsafe fn exit(arg: i32) -> ! {
+	sys_exit(arg)
+}
+
+/// cause abnormal termination
+#[inline(always)]
+pub unsafe fn abort() -> ! {
+	sys_abort()
+}
+
+/// suspend execution for microsecond intervals
+///
+/// The usleep() function suspends execution of the calling
+/// thread for (at least) `usecs` microseconds.
+#[inline(always)]
+pub unsafe fn usleep(usecs: u64) {
+	sys_usleep(usecs)
+}
+
+/// 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.
+#[inline(always)]
+pub unsafe fn spawn(
+	id: *mut Tid,
+	func: extern "C" fn(usize),
+	arg: usize,
+	prio: u8,
+	core_id: isize,
+) -> i32 {
+	sys_spawn(id, func, arg, prio, core_id)
+}
+
+/// 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.
+#[inline(always)]
+pub unsafe fn spawn2(
+	func: extern "C" fn(usize),
+	arg: usize,
+	prio: u8,
+	stack_size: usize,
+	core_id: isize,
+) -> Tid {
+	sys_spawn2(func, arg, prio, stack_size, core_id)
+}
+
+/// join with a terminated thread
+///
+/// The join() function waits for the thread specified by `id`
+/// to terminate.
+#[inline(always)]
+pub unsafe fn join(id: Tid) -> i32 {
+	sys_join(id)
+}
+
+/// 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.
+#[inline(always)]
+pub unsafe fn yield_now() {
+	sys_yield()
+}
+
+/// get current time
+///
+/// The clock_gettime() functions allow the calling thread
+/// to retrieve the value used by a clock which is specified
+/// by `clock_id`.
+///
+/// `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
+#[inline(always)]
+pub unsafe fn clock_gettime(clock_id: u64, tp: *mut timespec) -> i32 {
+	sys_clock_gettime(clock_id, tp)
+}
+
+/// 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().
+#[inline(always)]
+pub unsafe fn open(name: *const i8, flags: i32, mode: i32) -> i32 {
+	sys_open(name, flags, mode)
+}
+
+/// delete the file it refers to `name`
+#[inline(always)]
+pub unsafe fn unlink(name: *const i8) -> i32 {
+	sys_unlink(name)
+}
+
+/// The largest number `rand` will return
+pub const RAND_MAX: u64 = 2_147_483_647;
+
+/// The function computes a sequence of pseudo-random integers
+/// in the range of 0 to RAND_MAX
+#[inline(always)]
+pub unsafe fn rand() -> u32 {
+	sys_rand()
+}
+
+/// The function sets its argument as the seed for a new sequence
+/// of pseudo-random numbers to be returned by `rand`
+#[inline(always)]
+pub unsafe fn srand(seed: u32) {
+	sys_srand(seed);
+}
+
+/// Create a cryptographicly secure 32bit random number with the support of
+/// the underlying hardware. If the required hardware isn't available,
+/// the function returns `None`.
+#[inline(always)]
+pub unsafe fn secure_rand32() -> Option<u32> {
+	sys_secure_rand32()
+}
+
+/// Create a cryptographicly secure 64bit random number with the support of
+/// the underlying hardware. If the required hardware isn't available,
+/// the function returns `None`.
+#[inline(always)]
+pub unsafe fn secure_rand64() -> Option<u64> {
+	sys_secure_rand64()
+}
+
+/// Add current task to the queue of blocked tasl. After calling `block_current_task`,
+/// call `yield_now` to switch to another task.
+#[inline(always)]
+pub unsafe fn block_current_task() {
+	sys_block_current_task();
+}
+
+/// Wakeup task with the thread id `tid`
+#[inline(always)]
+pub unsafe fn wakeup_task(tid: Tid) {
+	sys_wakeup_task(tid);
+}
+
+/// Determine the priority of the current thread
+#[inline(always)]
+pub unsafe fn get_priority() -> Priority {
+	Priority::from(sys_get_priority())
+}
diff --git a/vendor/hermit-abi/src/tcplistener.rs b/vendor/hermit-abi/src/tcplistener.rs
new file mode 100644
index 000000000..5afe67364
--- /dev/null
+++ b/vendor/hermit-abi/src/tcplistener.rs
@@ -0,0 +1,13 @@
+//! `tcplistener` provide an interface to establish tcp socket server.
+
+use crate::{Handle, IpAddress};
+
+extern "Rust" {
+	fn sys_tcp_listener_accept(port: u16) -> Result<(Handle, IpAddress, u16), ()>;
+}
+
+/// Wait for connection at specified address.
+#[inline(always)]
+pub fn accept(port: u16) -> Result<(Handle, IpAddress, u16), ()> {
+	unsafe { sys_tcp_listener_accept(port) }
+}
diff --git a/vendor/hermit-abi/src/tcpstream.rs b/vendor/hermit-abi/src/tcpstream.rs
new file mode 100644
index 000000000..3024d379f
--- /dev/null
+++ b/vendor/hermit-abi/src/tcpstream.rs
@@ -0,0 +1,109 @@
+//! `tcpstream` provide an interface to establish tcp socket client.
+
+use crate::{Handle, IpAddress};
+
+extern "Rust" {
+	fn sys_tcp_stream_connect(ip: &[u8], port: u16, timeout: Option<u64>) -> Result<Handle, ()>;
+	fn sys_tcp_stream_close(handle: Handle) -> Result<(), ()>;
+	fn sys_tcp_stream_read(handle: Handle, buffer: &mut [u8]) -> Result<usize, ()>;
+	fn sys_tcp_stream_write(handle: Handle, buffer: &[u8]) -> Result<usize, ()>;
+	fn sys_tcp_stream_set_read_timeout(handle: Handle, timeout: Option<u64>) -> Result<(), ()>;
+	fn sys_tcp_stream_get_read_timeout(handle: Handle) -> Result<Option<u64>, ()>;
+	fn sys_tcp_stream_set_write_timeout(handle: Handle, timeout: Option<u64>) -> Result<(), ()>;
+	fn sys_tcp_stream_get_write_timeout(handle: Handle) -> Result<Option<u64>, ()>;
+	fn sys_tcp_stream_peek(handle: Handle, buf: &mut [u8]) -> Result<usize, ()>;
+	fn sys_tcp_stream_set_nonblocking(handle: Handle, mode: bool) -> Result<(), ()>;
+	fn sys_tcp_stream_set_tll(handle: Handle, ttl: u32) -> Result<(), ()>;
+	fn sys_tcp_stream_get_tll(handle: Handle) -> Result<u32, ()>;
+	fn sys_tcp_stream_shutdown(handle: Handle, how: i32) -> Result<(), ()>;
+	fn sys_tcp_stream_peer_addr(handle: Handle) -> Result<(IpAddress, u16), ()>;
+}
+
+/// Opens a TCP connection to a remote host.
+#[inline(always)]
+pub fn connect(ip: &[u8], port: u16, timeout: Option<u64>) -> Result<Handle, ()> {
+	unsafe { sys_tcp_stream_connect(ip, port, timeout) }
+}
+
+/// Close a TCP connection
+#[inline(always)]
+pub fn close(handle: Handle) -> Result<(), ()> {
+	unsafe { sys_tcp_stream_close(handle) }
+}
+
+#[inline(always)]
+pub fn peek(handle: Handle, buf: &mut [u8]) -> Result<usize, ()> {
+	unsafe { sys_tcp_stream_peek(handle, buf) }
+}
+
+#[inline(always)]
+pub fn peer_addr(handle: Handle) -> Result<(IpAddress, u16), ()> {
+	unsafe { sys_tcp_stream_peer_addr(handle) }
+}
+#[inline(always)]
+pub fn read(handle: Handle, buffer: &mut [u8]) -> Result<usize, ()> {
+	unsafe { sys_tcp_stream_read(handle, buffer) }
+}
+
+#[inline(always)]
+pub fn write(handle: Handle, buffer: &[u8]) -> Result<usize, ()> {
+	unsafe { sys_tcp_stream_write(handle, buffer) }
+}
+
+#[inline(always)]
+pub fn set_read_timeout(handle: Handle, timeout: Option<u64>) -> Result<(), ()> {
+	unsafe { sys_tcp_stream_set_read_timeout(handle, timeout) }
+}
+
+#[inline(always)]
+pub fn set_write_timeout(handle: Handle, timeout: Option<u64>) -> Result<(), ()> {
+	unsafe { sys_tcp_stream_set_write_timeout(handle, timeout) }
+}
+
+#[inline(always)]
+pub fn get_read_timeout(handle: Handle) -> Result<Option<u64>, ()> {
+	unsafe { sys_tcp_stream_get_read_timeout(handle) }
+}
+
+#[inline(always)]
+pub fn get_write_timeout(handle: Handle) -> Result<Option<u64>, ()> {
+	unsafe { sys_tcp_stream_get_write_timeout(handle) }
+}
+
+#[inline(always)]
+pub fn set_nodelay(_: Handle, mode: bool) -> Result<(), ()> {
+	// smoltcp does not support Nagle's algorithm
+	// => to enable Nagle's algorithm isn't possible
+	if mode {
+		Ok(())
+	} else {
+		Err(())
+	}
+}
+
+#[inline(always)]
+pub fn nodelay(_: Handle) -> Result<bool, ()> {
+	// smoltcp does not support Nagle's algorithm
+	// => return always true
+	Ok(true)
+}
+
+#[inline(always)]
+pub fn set_nonblocking(handle: Handle, mode: bool) -> Result<(), ()> {
+	unsafe { sys_tcp_stream_set_nonblocking(handle, mode) }
+}
+
+#[inline(always)]
+pub fn set_tll(handle: Handle, ttl: u32) -> Result<(), ()> {
+	unsafe { sys_tcp_stream_set_tll(handle, ttl) }
+}
+
+#[inline(always)]
+pub fn get_tll(handle: Handle) -> Result<u32, ()> {
+	unsafe { sys_tcp_stream_get_tll(handle) }
+}
+
+#[inline(always)]
+pub fn shutdown(handle: Handle, how: i32) -> Result<(), ()> {
+	unsafe { sys_tcp_stream_shutdown(handle, how) }
+}