diff options
Diffstat (limited to 'vendor/errno')
| -rw-r--r-- | vendor/errno/.cargo-checksum.json | 1 | ||||
| -rw-r--r-- | vendor/errno/CHANGELOG.md | 72 | ||||
| -rw-r--r-- | vendor/errno/Cargo.toml | 43 | ||||
| -rw-r--r-- | vendor/errno/LICENSE-APACHE | 201 | ||||
| -rw-r--r-- | vendor/errno/LICENSE-MIT | 25 | ||||
| -rw-r--r-- | vendor/errno/README.md | 62 | ||||
| -rw-r--r-- | vendor/errno/clippy.toml | 1 | ||||
| -rw-r--r-- | vendor/errno/debian/patches/no-windows.patch | 14 | ||||
| -rw-r--r-- | vendor/errno/debian/patches/series | 1 | ||||
| -rw-r--r-- | vendor/errno/src/hermit.rs | 32 | ||||
| -rw-r--r-- | vendor/errno/src/lib.rs | 156 | ||||
| -rw-r--r-- | vendor/errno/src/unix.rs | 95 | ||||
| -rw-r--r-- | vendor/errno/src/wasi.rs | 60 | ||||
| -rw-r--r-- | vendor/errno/src/windows.rs | 81 |
14 files changed, 844 insertions, 0 deletions
diff --git a/vendor/errno/.cargo-checksum.json b/vendor/errno/.cargo-checksum.json new file mode 100644 index 0000000..ae2746b --- /dev/null +++ b/vendor/errno/.cargo-checksum.json @@ -0,0 +1 @@ +{"files":{},"package":"ac3e13f66a2f95e32a39eaa81f6b95d42878ca0e1db0c7543723dfe12557e860"}
\ No newline at end of file diff --git a/vendor/errno/CHANGELOG.md b/vendor/errno/CHANGELOG.md new file mode 100644 index 0000000..fa43eec --- /dev/null +++ b/vendor/errno/CHANGELOG.md @@ -0,0 +1,72 @@ +# [Unreleased] + +# [0.3.5] - 2023-10-08 + +- Use __errno_location on DragonFly BSD + [#82](https://github.com/lambda-fairy/rust-errno/pull/82) + +# [0.3.4] - 2023-10-01 + +- Add GNU/Hurd support + [#80](https://github.com/lambda-fairy/rust-errno/pull/80) + +# [0.3.3] - 2023-08-28 + +- Disable "libc/std" in no-std configurations. + [#77](https://github.com/lambda-fairy/rust-errno/pull/77) + +- Bump errno-dragonfly to 0.1.2 + [#75](https://github.com/lambda-fairy/rust-errno/pull/75) + +- Support for the ESP-IDF framework + [#74](https://github.com/lambda-fairy/rust-errno/pull/74) + +# [0.3.2] - 2023-07-30 + +- Fix build on Hermit + [#73](https://github.com/lambda-fairy/rust-errno/pull/73) + +- Add support for QNX Neutrino + [#72](https://github.com/lambda-fairy/rust-errno/pull/72) + +# [0.3.1] - 2023-04-08 + +- Correct link name on redox + [#69](https://github.com/lambda-fairy/rust-errno/pull/69) + +- Update windows-sys requirement from 0.45 to 0.48 + [#70](https://github.com/lambda-fairy/rust-errno/pull/70) + +# [0.3.0] - 2023-02-12 + +- Add haiku support + [#42](https://github.com/lambda-fairy/rust-errno/pull/42) + +- Add AIX support + [#54](https://github.com/lambda-fairy/rust-errno/pull/54) + +- Add formatting with `#![no_std]` + [#44](https://github.com/lambda-fairy/rust-errno/pull/44) + +- Switch from `winapi` to `windows-sys` [#55](https://github.com/lambda-fairy/rust-errno/pull/55) + +- Update minimum Rust version to 1.48 + [#48](https://github.com/lambda-fairy/rust-errno/pull/48) [#55](https://github.com/lambda-fairy/rust-errno/pull/55) + +- Upgrade to Rust 2018 edition [#59](https://github.com/lambda-fairy/rust-errno/pull/59) + +- wasm32-wasi: Use `__errno_location` instead of `feature(thread_local)`. [#66](https://github.com/lambda-fairy/rust-errno/pull/66) + +# [0.2.8] - 2021-10-27 + +- Optionally support no_std + [#31](https://github.com/lambda-fairy/rust-errno/pull/31) + +[Unreleased]: https://github.com/lambda-fairy/rust-errno/compare/v0.3.5...HEAD +[0.3.5]: https://github.com/lambda-fairy/rust-errno/compare/v0.3.4...v0.3.5 +[0.3.4]: https://github.com/lambda-fairy/rust-errno/compare/v0.3.3...v0.3.4 +[0.3.3]: https://github.com/lambda-fairy/rust-errno/compare/v0.3.2...v0.3.3 +[0.3.2]: https://github.com/lambda-fairy/rust-errno/compare/v0.3.1...v0.3.2 +[0.3.1]: https://github.com/lambda-fairy/rust-errno/compare/v0.3.0...v0.3.1 +[0.3.0]: https://github.com/lambda-fairy/rust-errno/compare/v0.2.8...v0.3.0 +[0.2.8]: https://github.com/lambda-fairy/rust-errno/compare/v0.2.7...v0.2.8 diff --git a/vendor/errno/Cargo.toml b/vendor/errno/Cargo.toml new file mode 100644 index 0000000..e5e18a3 --- /dev/null +++ b/vendor/errno/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 = "2018" +rust-version = "1.48" +name = "errno" +version = "0.3.5" +authors = ["Chris Wong <lambda.fairy@gmail.com>"] +description = "Cross-platform interface to the `errno` variable." +documentation = "https://docs.rs/errno" +readme = "README.md" +categories = [ + "no-std", + "os", +] +license = "MIT OR Apache-2.0" +repository = "https://github.com/lambda-fairy/rust-errno" + +[features] +default = ["std"] +std = ["libc/std"] + +[target."cfg(target_os=\"hermit\")".dependencies.libc] +version = "0.2" +default-features = false + +[target."cfg(target_os=\"wasi\")".dependencies.libc] +version = "0.2" +default-features = false + +[target."cfg(unix)".dependencies.libc] +version = "0.2" +default-features = false + diff --git a/vendor/errno/LICENSE-APACHE b/vendor/errno/LICENSE-APACHE new file mode 100644 index 0000000..16fe87b --- /dev/null +++ b/vendor/errno/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. 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We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + +Copyright [yyyy] [name of copyright owner] + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. diff --git a/vendor/errno/LICENSE-MIT b/vendor/errno/LICENSE-MIT new file mode 100644 index 0000000..66b6578 --- /dev/null +++ b/vendor/errno/LICENSE-MIT @@ -0,0 +1,25 @@ +Copyright (c) 2014 Chris Wong + +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/errno/README.md b/vendor/errno/README.md new file mode 100644 index 0000000..48def10 --- /dev/null +++ b/vendor/errno/README.md @@ -0,0 +1,62 @@ +# errno [](https://github.com/lambda-fairy/rust-errno/actions/workflows/main.yml) [](https://crates.io/crates/errno) + +Cross-platform interface to the [`errno`][errno] variable. Works on Rust 1.48 or newer. + +Documentation is available at <https://docs.rs/errno>. + +[errno]: https://en.wikipedia.org/wiki/Errno.h + + +## Dependency + +Add to your `Cargo.toml`: + +```toml +[dependencies] +errno = "*" +``` + + +## Comparison with `std::io::Error` + +The standard library provides [`Error::last_os_error`][last_os_error] which fetches `errno` in the same way. + +This crate provides these extra features: + +- No heap allocations +- Optional `#![no_std]` support +- A `set_errno` function + +[last_os_error]: https://doc.rust-lang.org/std/io/struct.Error.html#method.last_os_error + + +## Examples + +```rust +extern crate errno; +use errno::{Errno, errno, set_errno}; + +// Get the current value of errno +let e = errno(); + +// Set the current value of errno +set_errno(e); + +// Extract the error code as an i32 +let code = e.0; + +// Display a human-friendly error message +println!("Error {}: {}", code, e); +``` + + +## `#![no_std]` + +Enable `#![no_std]` support by disabling the default `std` feature: + +```toml +[dependencies] +errno = { version = "*", default-features = false } +``` + +The `Error` impl will be unavailable. diff --git a/vendor/errno/clippy.toml b/vendor/errno/clippy.toml new file mode 100644 index 0000000..f691ea3 --- /dev/null +++ b/vendor/errno/clippy.toml @@ -0,0 +1 @@ +msrv = "1.48" diff --git a/vendor/errno/debian/patches/no-windows.patch b/vendor/errno/debian/patches/no-windows.patch new file mode 100644 index 0000000..07c81ec --- /dev/null +++ b/vendor/errno/debian/patches/no-windows.patch @@ -0,0 +1,14 @@ +Index: errno/Cargo.toml +=================================================================== +--- errno.orig/Cargo.toml ++++ errno/Cargo.toml +@@ -41,9 +41,3 @@ default-features = false + version = "0.2" + default-features = false + +-[target."cfg(windows)".dependencies.windows-sys] +-version = "0.48" +-features = [ +- "Win32_Foundation", +- "Win32_System_Diagnostics_Debug", +-] diff --git a/vendor/errno/debian/patches/series b/vendor/errno/debian/patches/series new file mode 100644 index 0000000..90546e4 --- /dev/null +++ b/vendor/errno/debian/patches/series @@ -0,0 +1 @@ +no-windows.patch diff --git a/vendor/errno/src/hermit.rs b/vendor/errno/src/hermit.rs new file mode 100644 index 0000000..331b6b1 --- /dev/null +++ b/vendor/errno/src/hermit.rs @@ -0,0 +1,32 @@ +//! Implementation of `errno` functionality for RustyHermit. +//! +//! Currently, the error handling in RustyHermit isn't clearly +//! defined. At the current stage of RustyHermit, only a placeholder +//! is provided to be compatible to the classical errno interface. + +// Copyright 2015 The Rust Project Developers. See the COPYRIGHT +// file at the top-level directory of this distribution and at +// http://rust-lang.org/COPYRIGHT. +// +// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or +// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license +// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your +// option. This file may not be copied, modified, or distributed +// except according to those terms. + +use crate::Errno; + +pub fn with_description<F, T>(_err: Errno, callback: F) -> T +where + F: FnOnce(Result<&str, Errno>) -> T, +{ + callback(Ok("unknown error")) +} + +pub const STRERROR_NAME: &str = "strerror_r"; + +pub fn errno() -> Errno { + Errno(0) +} + +pub fn set_errno(_: Errno) {} diff --git a/vendor/errno/src/lib.rs b/vendor/errno/src/lib.rs new file mode 100644 index 0000000..20875b5 --- /dev/null +++ b/vendor/errno/src/lib.rs @@ -0,0 +1,156 @@ +//! Cross-platform interface to the `errno` variable. +//! +//! # Examples +//! ``` +//! use errno::{Errno, errno, set_errno}; +//! +//! // Get the current value of errno +//! let e = errno(); +//! +//! // Set the current value of errno +//! set_errno(e); +//! +//! // Extract the error code as an i32 +//! let code = e.0; +//! +//! // Display a human-friendly error message +//! println!("Error {}: {}", code, e); +//! ``` + +#![cfg_attr(not(feature = "std"), no_std)] + +#[cfg_attr(unix, path = "unix.rs")] +#[cfg_attr(windows, path = "windows.rs")] +#[cfg_attr(target_os = "wasi", path = "wasi.rs")] +#[cfg_attr(target_os = "hermit", path = "hermit.rs")] +mod sys; + +use core::fmt; +#[cfg(feature = "std")] +use std::error::Error; +#[cfg(feature = "std")] +use std::io; + +/// Wraps a platform-specific error code. +/// +/// The `Display` instance maps the code to a human-readable string. It +/// calls [`strerror_r`][1] under POSIX, and [`FormatMessageW`][2] on +/// Windows. +/// +/// [1]: http://pubs.opengroup.org/onlinepubs/009695399/functions/strerror.html +/// [2]: https://msdn.microsoft.com/en-us/library/windows/desktop/ms679351%28v=vs.85%29.aspx +#[derive(Copy, Clone, Eq, Ord, PartialEq, PartialOrd, Hash)] +pub struct Errno(pub i32); + +impl fmt::Debug for Errno { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + sys::with_description(*self, |desc| { + fmt.debug_struct("Errno") + .field("code", &self.0) + .field("description", &desc.ok()) + .finish() + }) + } +} + +impl fmt::Display for Errno { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + sys::with_description(*self, |desc| match desc { + Ok(desc) => fmt.write_str(desc), + Err(fm_err) => write!( + fmt, + "OS error {} ({} returned error {})", + self.0, + sys::STRERROR_NAME, + fm_err.0 + ), + }) + } +} + +impl From<Errno> for i32 { + fn from(e: Errno) -> Self { + e.0 + } +} + +#[cfg(feature = "std")] +impl Error for Errno { + // TODO: Remove when MSRV >= 1.27 + #[allow(deprecated)] + fn description(&self) -> &str { + "system error" + } +} + +#[cfg(feature = "std")] +impl From<Errno> for io::Error { + fn from(errno: Errno) -> Self { + io::Error::from_raw_os_error(errno.0) + } +} + +/// Returns the platform-specific value of `errno`. +pub fn errno() -> Errno { + sys::errno() +} + +/// Sets the platform-specific value of `errno`. +pub fn set_errno(err: Errno) { + sys::set_errno(err) +} + +#[test] +fn it_works() { + let x = errno(); + set_errno(x); +} + +#[cfg(feature = "std")] +#[test] +fn it_works_with_to_string() { + let x = errno(); + let _ = x.to_string(); +} + +#[cfg(feature = "std")] +#[test] +fn check_description() { + let expect = if cfg!(windows) { + "Incorrect function." + } else if cfg!(target_os = "illumos") { + "Not owner" + } else if cfg!(target_os = "wasi") { + "Argument list too long" + } else if cfg!(target_os = "haiku") { + "Operation not allowed" + } else { + "Operation not permitted" + }; + + let errno_code = if cfg!(target_os = "haiku") { + -2147483633 + } else { + 1 + }; + set_errno(Errno(errno_code)); + + assert_eq!(errno().to_string(), expect); + assert_eq!( + format!("{:?}", errno()), + format!( + "Errno {{ code: {}, description: Some({:?}) }}", + errno_code, expect + ) + ); +} + +#[cfg(feature = "std")] +#[test] +fn check_error_into_errno() { + const ERROR_CODE: i32 = 1; + + let error = io::Error::from_raw_os_error(ERROR_CODE); + let new_error: io::Error = Errno(ERROR_CODE).into(); + assert_eq!(error.kind(), new_error.kind()); +} diff --git a/vendor/errno/src/unix.rs b/vendor/errno/src/unix.rs new file mode 100644 index 0000000..86a35d9 --- /dev/null +++ b/vendor/errno/src/unix.rs @@ -0,0 +1,95 @@ +//! Implementation of `errno` functionality for Unix systems. +//! +//! Adapted from `src/libstd/sys/unix/os.rs` in the Rust distribution. + +// Copyright 2015 The Rust Project Developers. See the COPYRIGHT +// file at the top-level directory of this distribution and at +// http://rust-lang.org/COPYRIGHT. +// +// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or +// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license +// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your +// option. This file may not be copied, modified, or distributed +// except according to those terms. + +use core::str; +use libc::{self, c_char, c_int, size_t, strlen}; + +use crate::Errno; + +fn from_utf8_lossy(input: &[u8]) -> &str { + match str::from_utf8(input) { + Ok(valid) => valid, + Err(error) => unsafe { str::from_utf8_unchecked(&input[..error.valid_up_to()]) }, + } +} + +pub fn with_description<F, T>(err: Errno, callback: F) -> T +where + F: FnOnce(Result<&str, Errno>) -> T, +{ + let mut buf = [0u8; 1024]; + let c_str = unsafe { + if strerror_r(err.0, buf.as_mut_ptr() as *mut _, buf.len() as size_t) < 0 { + let fm_err = errno(); + if fm_err != Errno(libc::ERANGE) { + return callback(Err(fm_err)); + } + } + let c_str_len = strlen(buf.as_ptr() as *const _); + &buf[..c_str_len] + }; + callback(Ok(from_utf8_lossy(c_str))) +} + +pub const STRERROR_NAME: &str = "strerror_r"; + +pub fn errno() -> Errno { + unsafe { Errno(*errno_location()) } +} + +pub fn set_errno(Errno(errno): Errno) { + unsafe { + *errno_location() = errno; + } +} + +extern "C" { + #[cfg_attr( + any(target_os = "macos", target_os = "ios", target_os = "freebsd"), + link_name = "__error" + )] + #[cfg_attr( + any( + target_os = "openbsd", + target_os = "netbsd", + target_os = "bitrig", + target_os = "android", + target_os = "espidf" + ), + link_name = "__errno" + )] + #[cfg_attr( + any(target_os = "solaris", target_os = "illumos"), + link_name = "___errno" + )] + #[cfg_attr(target_os = "haiku", link_name = "_errnop")] + #[cfg_attr( + any( + target_os = "linux", + target_os = "hurd", + target_os = "redox", + target_os = "dragonfly" + ), + link_name = "__errno_location" + )] + #[cfg_attr(target_os = "aix", link_name = "_Errno")] + #[cfg_attr(target_os = "nto", link_name = "__get_errno_ptr")] + fn errno_location() -> *mut c_int; + + #[cfg_attr( + any(target_os = "linux", target_os = "hurd"), + link_name = "__xpg_strerror_r" + )] + fn strerror_r(errnum: c_int, buf: *mut c_char, buflen: size_t) -> c_int; +} diff --git a/vendor/errno/src/wasi.rs b/vendor/errno/src/wasi.rs new file mode 100644 index 0000000..b18fa9b --- /dev/null +++ b/vendor/errno/src/wasi.rs @@ -0,0 +1,60 @@ +//! Implementation of `errno` functionality for WASI. +//! +//! Adapted from `unix.rs`. + +// Copyright 2015 The Rust Project Developers. See the COPYRIGHT +// file at the top-level directory of this distribution and at +// http://rust-lang.org/COPYRIGHT. +// +// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or +// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license +// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your +// option. This file may not be copied, modified, or distributed +// except according to those terms. + +use core::str; +use libc::{self, c_char, c_int, size_t, strlen}; + +use crate::Errno; + +fn from_utf8_lossy(input: &[u8]) -> &str { + match str::from_utf8(input) { + Ok(valid) => valid, + Err(error) => unsafe { str::from_utf8_unchecked(&input[..error.valid_up_to()]) }, + } +} + +pub fn with_description<F, T>(err: Errno, callback: F) -> T +where + F: FnOnce(Result<&str, Errno>) -> T, +{ + let mut buf = [0u8; 1024]; + let c_str = unsafe { + if strerror_r(err.0, buf.as_mut_ptr() as *mut _, buf.len() as size_t) < 0 { + let fm_err = errno(); + if fm_err != Errno(libc::ERANGE) { + return callback(Err(fm_err)); + } + } + let c_str_len = strlen(buf.as_ptr() as *const _); + &buf[..c_str_len] + }; + callback(Ok(from_utf8_lossy(c_str))) +} + +pub const STRERROR_NAME: &str = "strerror_r"; + +pub fn errno() -> Errno { + unsafe { Errno(*__errno_location()) } +} + +pub fn set_errno(Errno(new_errno): Errno) { + unsafe { + *__errno_location() = new_errno; + } +} + +extern "C" { + fn __errno_location() -> *mut c_int; + fn strerror_r(errnum: c_int, buf: *mut c_char, buflen: size_t) -> c_int; +} diff --git a/vendor/errno/src/windows.rs b/vendor/errno/src/windows.rs new file mode 100644 index 0000000..9c7c0e4 --- /dev/null +++ b/vendor/errno/src/windows.rs @@ -0,0 +1,81 @@ +//! Implementation of `errno` functionality for Windows. +//! +//! Adapted from `src/libstd/sys/windows/os.rs` in the Rust distribution. + +// Copyright 2014 The Rust Project Developers. See the COPYRIGHT +// file at the top-level directory of this distribution and at +// http://rust-lang.org/COPYRIGHT. +// +// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or +// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license +// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your +// option. This file may not be copied, modified, or distributed +// except according to those terms. + +use core::char::{self, REPLACEMENT_CHARACTER}; +use core::ptr; +use core::str; +use windows_sys::Win32::Foundation::{GetLastError, SetLastError, WIN32_ERROR}; +use windows_sys::Win32::System::Diagnostics::Debug::{ + FormatMessageW, FORMAT_MESSAGE_FROM_SYSTEM, FORMAT_MESSAGE_IGNORE_INSERTS, +}; + +use crate::Errno; + +fn from_utf16_lossy<'a>(input: &[u16], output: &'a mut [u8]) -> &'a str { + let mut output_len = 0; + for c in char::decode_utf16(input.iter().copied().take_while(|&x| x != 0)) + .map(|x| x.unwrap_or(REPLACEMENT_CHARACTER)) + { + let c_len = c.len_utf8(); + if c_len > output.len() - output_len { + break; + } + c.encode_utf8(&mut output[output_len..]); + output_len += c_len; + } + unsafe { str::from_utf8_unchecked(&output[..output_len]) } +} + +pub fn with_description<F, T>(err: Errno, callback: F) -> T +where + F: FnOnce(Result<&str, Errno>) -> T, +{ + // This value is calculated from the macro + // MAKELANGID(LANG_SYSTEM_DEFAULT, SUBLANG_SYS_DEFAULT) + let lang_id = 0x0800_u32; + + let mut buf = [0u16; 2048]; + + unsafe { + let res = FormatMessageW( + FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, + ptr::null_mut(), + err.0 as u32, + lang_id, + buf.as_mut_ptr(), + buf.len() as u32, + ptr::null_mut(), + ); + if res == 0 { + // Sometimes FormatMessageW can fail e.g. system doesn't like lang_id + let fm_err = errno(); + return callback(Err(fm_err)); + } + + let mut msg = [0u8; 2048]; + let msg = from_utf16_lossy(&buf[..res as usize], &mut msg[..]); + // Trim trailing CRLF inserted by FormatMessageW + callback(Ok(msg.trim_end())) + } +} + +pub const STRERROR_NAME: &str = "FormatMessageW"; + +pub fn errno() -> Errno { + unsafe { Errno(GetLastError() as i32) } +} + +pub fn set_errno(Errno(errno): Errno) { + unsafe { SetLastError(errno as WIN32_ERROR) } +} |