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164265bed1
The repo we were depending on is very large and we need very small part of it. --------- Co-authored-by: Pavel <pavel@krymets.com>
92 lines
3.1 KiB
Rust
92 lines
3.1 KiB
Rust
#![allow(clippy::uninit_vec)]
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// This file is copied from https://github.com/wezterm/wezterm (MIT license).
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// Copyright (c) 2018-Present Wez Furlong
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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use super::psuedocon::HPCON;
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use anyhow::ensure;
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use anyhow::Error;
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use std::io::Error as IoError;
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use std::mem;
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use std::ptr;
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use winapi::shared::minwindef::DWORD;
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use winapi::um::processthreadsapi::*;
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const PROC_THREAD_ATTRIBUTE_PSEUDOCONSOLE: usize = 0x00020016;
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pub struct ProcThreadAttributeList {
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data: Vec<u8>,
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}
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impl ProcThreadAttributeList {
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pub fn with_capacity(num_attributes: DWORD) -> Result<Self, Error> {
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let mut bytes_required: usize = 0;
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unsafe {
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InitializeProcThreadAttributeList(
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ptr::null_mut(),
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num_attributes,
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0,
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&mut bytes_required,
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)
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};
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let mut data = Vec::with_capacity(bytes_required);
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unsafe { data.set_len(bytes_required) };
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let attr_ptr = data.as_mut_slice().as_mut_ptr() as *mut _;
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let res = unsafe {
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InitializeProcThreadAttributeList(attr_ptr, num_attributes, 0, &mut bytes_required)
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};
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ensure!(
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res != 0,
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"InitializeProcThreadAttributeList failed: {}",
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IoError::last_os_error()
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);
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Ok(Self { data })
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}
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pub fn as_mut_ptr(&mut self) -> LPPROC_THREAD_ATTRIBUTE_LIST {
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self.data.as_mut_slice().as_mut_ptr() as *mut _
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}
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pub fn set_pty(&mut self, con: HPCON) -> Result<(), Error> {
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let res = unsafe {
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UpdateProcThreadAttribute(
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self.as_mut_ptr(),
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0,
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PROC_THREAD_ATTRIBUTE_PSEUDOCONSOLE,
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con,
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mem::size_of::<HPCON>(),
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ptr::null_mut(),
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ptr::null_mut(),
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)
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};
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ensure!(
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res != 0,
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"UpdateProcThreadAttribute failed: {}",
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IoError::last_os_error()
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);
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Ok(())
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}
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}
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impl Drop for ProcThreadAttributeList {
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fn drop(&mut self) {
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unsafe { DeleteProcThreadAttributeList(self.as_mut_ptr()) };
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}
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}
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