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更新libclamav库1.0.0版本

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aixiao
2023-01-14 18:28:39 +08:00
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{"files":{"Cargo.toml":"023c46a92caf2fc7a31fba3e7d4428a287e1fbdef822ed7e9a8f91284a30b387","LICENSE-APACHE":"a60eea817514531668d7e00765731449fe14d059d3249e0bc93b36de45f759f2","LICENSE-MIT":"23f18e03dc49df91622fe2a76176497404e46ced8a715d9d2b67a7446571cca3","README.md":"322fadd63e558e5a10caf980cbedf83ac1546ba40fd992f54492e21ce54205af","rust-toolchain":"58bea07cb6d97f9cfcd5c8f98b1feca0fb81cce5b0bf29a8e70ed2641956e9a6","src/lib.rs":"c7dca30b651c91590ff46370bdaa10214062b9456395fb4bd549dedbf457c695","src/tcplistener.rs":"c6e2db06d4265fa0956851e1c965336d60c53ab21573729aae76ecfe0ccc84c3","src/tcpstream.rs":"38a17de54213faf9de217f6146ff86ee75b67d4404a532b1419903269200936b"},"package":"62b467343b94ba476dcb2500d242dadbb39557df889310ac77c5d99100aaac33"}

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clamav/libclamav_rust/.cargo/vendor/hermit-abi/Cargo.toml vendored Normal file
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# 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 believe there's an error in this file please file an
# issue against the rust-lang/cargo repository. If you're
# editing this file be aware that the upstream Cargo.toml
# will likely look very different (and much more reasonable)
[package]
edition = "2018"
name = "hermit-abi"
version = "0.1.19"
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/libhermit-rs"
[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"]

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Permission is hereby granted, free of charge, to any
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# 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.

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nightly

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clamav/libclamav_rust/.cargo/vendor/hermit-abi/src/lib.rs vendored Normal file
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//! `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
}
/// intialize 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())
}

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clamav/libclamav_rust/.cargo/vendor/hermit-abi/src/tcplistener.rs vendored Normal file
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//! `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) }
}

109
clamav/libclamav_rust/.cargo/vendor/hermit-abi/src/tcpstream.rs vendored Normal file
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//! `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) }
}