Add more from the std

library/std/src/sys/io/mod.rs

@@ -0,0 +1,72 @@
+#![forbid(unsafe_op_in_unsafe_fn)]
+
+mod error;
+
+mod io_slice {
+    cfg_select! {
+        any(target_family = "unix", target_os = "hermit", target_os = "solid_asp3", target_os = "trusty", target_os = "wasi") => {
+            mod iovec;
+            pub use iovec::*;
+        }
+        target_os = "windows" => {
+            mod windows;
+            pub use windows::*;
+        }
+        target_os = "uefi" => {
+            mod uefi;
+            pub use uefi::*;
+        }
+        _ => {
+            mod unsupported;
+            pub use unsupported::*;
+        }
+    }
+}
+
+mod is_terminal {
+    cfg_select! {
+        any(target_family = "unix", target_os = "wasi") => {
+            mod isatty;
+            pub use isatty::*;
+        }
+        target_os = "windows" => {
+            mod windows;
+            pub use windows::*;
+        }
+        target_os = "hermit" => {
+            mod hermit;
+            pub use hermit::*;
+        }
+        target_os = "motor" => {
+            mod motor;
+            pub use motor::*;
+        }
+        _ => {
+            mod unsupported;
+            pub use unsupported::*;
+        }
+    }
+}
+
+mod kernel_copy;
+
+#[cfg_attr(not(target_os = "linux"), allow(unused_imports))]
+#[cfg(all(
+    target_family = "unix",
+    not(any(target_os = "dragonfly", target_os = "vxworks", target_os = "rtems"))
+))]
+pub use error::errno_location;
+#[cfg_attr(not(target_os = "linux"), allow(unused_imports))]
+#[cfg(any(
+    all(target_family = "unix", not(any(target_os = "vxworks", target_os = "rtems"))),
+    target_os = "wasi",
+))]
+pub use error::set_errno;
+pub use error::{RawOsError, decode_error_kind, errno, error_string, is_interrupted};
+pub use io_slice::{IoSlice, IoSliceMut};
+pub use is_terminal::is_terminal;
+pub use kernel_copy::{CopyState, kernel_copy};
+
+// Bare metal platforms usually have very small amounts of RAM
+// (in the order of hundreds of KB)
+pub const DEFAULT_BUF_SIZE: usize = if cfg!(target_os = "espidf") { 512 } else { 8 * 1024 };