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authorValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
committerValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
commita990de90fe41456a23e58bd087d2f107d321f3a1 (patch)
tree15afc392522a9e85dc3332235e311b7d39352ea9 /vendor/rustix/src/backend/libc/mod.rs
parent3d48cd3f81164bbfc1a755dc1d4a9a02f98c8ddd (diff)
downloadfparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.tar.xz
fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.zip
Deleted vendor folder
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diff --git a/vendor/rustix/src/backend/libc/mod.rs b/vendor/rustix/src/backend/libc/mod.rs
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-//! The libc backend.
-//!
-//! On most platforms, this uses the `libc` crate to make system calls. On
-//! Windows, this uses the Winsock API in `windows-sys`, which can be adapted
-//! to have a very `libc`-like interface.
-
-// Every FFI call requires an unsafe block, and there are a lot of FFI
-// calls. For now, set this to allow for the libc backend.
-#![allow(clippy::undocumented_unsafe_blocks)]
-// Lots of libc types vary between platforms, so we often need a `.into()` on
-// one platform where it's redundant on another.
-#![allow(clippy::useless_conversion)]
-
-mod conv;
-
-#[cfg(windows)]
-pub(crate) mod fd {
- pub use crate::maybe_polyfill::os::windows::io::{
- AsRawSocket, AsSocket, BorrowedSocket as BorrowedFd, FromRawSocket, IntoRawSocket,
- OwnedSocket as OwnedFd, RawSocket as RawFd,
- };
- pub(crate) use windows_sys::Win32::Networking::WinSock::SOCKET as LibcFd;
-
- /// A version of [`AsRawFd`] for use with Winsock API.
- ///
- /// [`AsRawFd`]: https://doc.rust-lang.org/stable/std/os/fd/trait.AsRawFd.html
- pub trait AsRawFd {
- /// A version of [`as_raw_fd`] for use with Winsock API.
- ///
- /// [`as_raw_fd`]: https://doc.rust-lang.org/stable/std/os/fd/trait.FromRawFd.html#tymethod.as_raw_fd
- fn as_raw_fd(&self) -> RawFd;
- }
- impl<T: AsRawSocket> AsRawFd for T {
- #[inline]
- fn as_raw_fd(&self) -> RawFd {
- self.as_raw_socket()
- }
- }
-
- /// A version of [`IntoRawFd`] for use with Winsock API.
- ///
- /// [`IntoRawFd`]: https://doc.rust-lang.org/stable/std/os/fd/trait.IntoRawFd.html
- pub trait IntoRawFd {
- /// A version of [`into_raw_fd`] for use with Winsock API.
- ///
- /// [`into_raw_fd`]: https://doc.rust-lang.org/stable/std/os/fd/trait.FromRawFd.html#tymethod.into_raw_fd
- fn into_raw_fd(self) -> RawFd;
- }
- impl<T: IntoRawSocket> IntoRawFd for T {
- #[inline]
- fn into_raw_fd(self) -> RawFd {
- self.into_raw_socket()
- }
- }
-
- /// A version of [`FromRawFd`] for use with Winsock API.
- ///
- /// [`FromRawFd`]: https://doc.rust-lang.org/stable/std/os/fd/trait.FromRawFd.html
- pub trait FromRawFd {
- /// A version of [`from_raw_fd`] for use with Winsock API.
- ///
- /// # Safety
- ///
- /// See the [safety requirements] for [`from_raw_fd`].
- ///
- /// [`from_raw_fd`]: https://doc.rust-lang.org/stable/std/os/fd/trait.FromRawFd.html#tymethod.from_raw_fd
- /// [safety requirements]: https://doc.rust-lang.org/stable/std/os/fd/trait.FromRawFd.html#safety
- unsafe fn from_raw_fd(raw_fd: RawFd) -> Self;
- }
- impl<T: FromRawSocket> FromRawFd for T {
- #[inline]
- unsafe fn from_raw_fd(raw_fd: RawFd) -> Self {
- Self::from_raw_socket(raw_fd)
- }
- }
-
- /// A version of [`AsFd`] for use with Winsock API.
- ///
- /// [`AsFd`]: https://doc.rust-lang.org/stable/std/os/fd/trait.AsFd.html
- pub trait AsFd {
- /// An `as_fd` function for Winsock, where a `Fd` is a `Socket`.
- fn as_fd(&self) -> BorrowedFd;
- }
- impl<T: AsSocket> AsFd for T {
- #[inline]
- fn as_fd(&self) -> BorrowedFd {
- self.as_socket()
- }
- }
-}
-#[cfg(not(windows))]
-pub(crate) mod fd {
- pub use crate::maybe_polyfill::os::fd::{
- AsFd, AsRawFd, BorrowedFd, FromRawFd, IntoRawFd, OwnedFd, RawFd,
- };
- #[allow(unused_imports)]
- pub(crate) use RawFd as LibcFd;
-}
-
-// On Windows we emulate selected libc-compatible interfaces. On non-Windows,
-// we just use libc here, since this is the libc backend.
-#[cfg_attr(windows, path = "winsock_c.rs")]
-pub(crate) mod c;
-
-#[cfg(feature = "event")]
-pub(crate) mod event;
-#[cfg(not(windows))]
-#[cfg(feature = "fs")]
-pub(crate) mod fs;
-pub(crate) mod io;
-#[cfg(linux_kernel)]
-#[cfg(feature = "io_uring")]
-pub(crate) mod io_uring;
-#[cfg(not(any(windows, target_os = "espidf", target_os = "vita", target_os = "wasi")))]
-#[cfg(feature = "mm")]
-pub(crate) mod mm;
-#[cfg(linux_kernel)]
-#[cfg(feature = "mount")]
-pub(crate) mod mount;
-#[cfg(linux_kernel)]
-#[cfg(all(feature = "fs", not(feature = "mount")))]
-pub(crate) mod mount; // for deprecated mount functions in "fs"
-#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
-#[cfg(feature = "net")]
-pub(crate) mod net;
-#[cfg(not(any(windows, target_os = "espidf")))]
-#[cfg(any(
- feature = "param",
- feature = "runtime",
- feature = "time",
- target_arch = "x86",
-))]
-pub(crate) mod param;
-#[cfg(not(windows))]
-#[cfg(feature = "pipe")]
-pub(crate) mod pipe;
-#[cfg(not(windows))]
-#[cfg(feature = "process")]
-pub(crate) mod process;
-#[cfg(not(windows))]
-#[cfg(not(target_os = "wasi"))]
-#[cfg(feature = "pty")]
-pub(crate) mod pty;
-#[cfg(not(windows))]
-#[cfg(feature = "rand")]
-pub(crate) mod rand;
-#[cfg(not(windows))]
-#[cfg(not(target_os = "wasi"))]
-#[cfg(feature = "system")]
-pub(crate) mod system;
-#[cfg(not(any(windows, target_os = "vita")))]
-#[cfg(feature = "termios")]
-pub(crate) mod termios;
-#[cfg(not(windows))]
-#[cfg(feature = "thread")]
-pub(crate) mod thread;
-#[cfg(not(any(windows, target_os = "espidf")))]
-#[cfg(feature = "time")]
-pub(crate) mod time;
-
-/// If the host libc is glibc, return `true` if it is less than version 2.25.
-///
-/// To restate and clarify, this function returning true does not mean the libc
-/// is glibc just that if it is glibc, it is less than version 2.25.
-///
-/// For now, this function is only available on Linux, but if it ends up being
-/// used beyond that, this could be changed to e.g. `#[cfg(unix)]`.
-#[cfg(all(unix, target_env = "gnu"))]
-pub(crate) fn if_glibc_is_less_than_2_25() -> bool {
- // This is also defined inside `weak_or_syscall!` in
- // backend/libc/rand/syscalls.rs, but it's not convenient to re-export the
- // weak symbol from that macro, so we duplicate it at a small cost here.
- weak! { fn getrandom(*mut c::c_void, c::size_t, c::c_uint) -> c::ssize_t }
-
- // glibc 2.25 has `getrandom`, which is how we satisfy the API contract of
- // this function. But, there are likely other libc versions which have it.
- getrandom.get().is_none()
-}
-
-// Private modules used by multiple public modules.
-#[cfg(any(feature = "procfs", feature = "process", feature = "runtime"))]
-#[cfg(not(any(windows, target_os = "wasi")))]
-pub(crate) mod pid;
-#[cfg(any(feature = "process", feature = "thread"))]
-#[cfg(linux_kernel)]
-pub(crate) mod prctl;
-#[cfg(not(any(
- windows,
- target_os = "android",
- target_os = "espidf",
- target_os = "vita",
- target_os = "wasi"
-)))]
-#[cfg(feature = "shm")]
-pub(crate) mod shm;
-#[cfg(any(feature = "fs", feature = "thread", feature = "process"))]
-#[cfg(not(any(windows, target_os = "wasi")))]
-pub(crate) mod ugid;
-
-#[cfg(bsd)]
-const MAX_IOV: usize = c::IOV_MAX as usize;
-
-#[cfg(any(linux_kernel, target_os = "emscripten", target_os = "nto"))]
-const MAX_IOV: usize = c::UIO_MAXIOV as usize;
-
-#[cfg(not(any(
- bsd,
- linux_kernel,
- windows,
- target_os = "emscripten",
- target_os = "espidf",
- target_os = "nto",
- target_os = "horizon",
-)))]
-const MAX_IOV: usize = 16; // The minimum value required by POSIX.