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Diffstat (limited to 'vendor/rustix/src/backend/libc/mod.rs')
| -rw-r--r-- | vendor/rustix/src/backend/libc/mod.rs | 215 |
1 files changed, 0 insertions, 215 deletions
diff --git a/vendor/rustix/src/backend/libc/mod.rs b/vendor/rustix/src/backend/libc/mod.rs deleted file mode 100644 index 9ecb09f..0000000 --- a/vendor/rustix/src/backend/libc/mod.rs +++ /dev/null @@ -1,215 +0,0 @@ -//! 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. |