Remove vendored dependencies

While it appears that by now we actually can get successful builds
without Cargo insisting on Internet access by virtue of using the
--frozen flag, maintaining vendored dependencies is somewhat of a pain
point. This state will also get worse with upcoming changes that replace
argparse in favor of structopt and pull in a slew of new dependencies by
doing so. Then there is also the repository structure aspect, which is
non-standard due to the way we vendor dependencies and a potential
source of confusion.
In order to fix these problems, this change removes all the vendored
dependencies we have.

Delete subrepo argparse/:argparse
Delete subrepo base32/:base32
Delete subrepo cc/:cc
Delete subrepo cfg-if/:cfg-if
Delete subrepo getrandom/:getrandom
Delete subrepo lazy-static/:lazy-static
Delete subrepo libc/:libc
Delete subrepo nitrokey-sys/:nitrokey-sys
Delete subrepo nitrokey/:nitrokey
Delete subrepo rand/:rand

22 files changed, 0 insertions, 1547 deletions

diff --git a/getrandom/src/bsd_arandom.rs b/getrandom/src/bsd_arandom.rs
deleted file mode 100644
index eb564ff..0000000
--- a/getrandom/src/bsd_arandom.rs
+++ /dev/null
@@ -1,49 +0,0 @@
-// Copyright 2018 Developers of the Rand project.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! Implementation for FreeBSD and NetBSD
-use crate::util_libc::sys_fill_exact;
-use crate::Error;
-use core::ptr;
-
-fn kern_arnd(buf: &mut [u8]) -> libc::ssize_t {
-    static MIB: [libc::c_int; 2] = [libc::CTL_KERN, libc::KERN_ARND];
-    let mut len = buf.len();
-    let ret = unsafe {
-        libc::sysctl(
-            MIB.as_ptr(),
-            MIB.len() as libc::c_uint,
-            buf.as_mut_ptr() as *mut _,
-            &mut len,
-            ptr::null(),
-            0,
-        )
-    };
-    if ret == -1 {
-        error!("sysctl kern.arandom: syscall failed");
-        -1
-    } else {
-        len as libc::ssize_t
-    }
-}
-
-pub fn getrandom_inner(dest: &mut [u8]) -> Result<(), Error> {
-    #[cfg(target_os = "freebsd")]
-    {
-        use crate::util_libc::Weak;
-        static GETRANDOM: Weak = unsafe { Weak::new("getrandom\0") };
-        type GetRandomFn =
-            unsafe extern "C" fn(*mut u8, libc::size_t, libc::c_uint) -> libc::ssize_t;
-
-        if let Some(fptr) = GETRANDOM.ptr() {
-            let func: GetRandomFn = unsafe { core::mem::transmute(fptr) };
-            return sys_fill_exact(dest, |buf| unsafe { func(buf.as_mut_ptr(), buf.len(), 0) });
-        }
-    }
-    sys_fill_exact(dest, kern_arnd)
-}
diff --git a/getrandom/src/cloudabi.rs b/getrandom/src/cloudabi.rs
deleted file mode 100644
index d3d0928..0000000
--- a/getrandom/src/cloudabi.rs
+++ /dev/null
@@ -1,25 +0,0 @@
-// Copyright 2018 Developers of the Rand project.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! Implementation for CloudABI
-use crate::Error;
-use core::num::NonZeroU32;
-
-extern "C" {
-    fn cloudabi_sys_random_get(buf: *mut u8, buf_len: usize) -> u16;
-}
-
-pub fn getrandom_inner(dest: &mut [u8]) -> Result<(), Error> {
-    let errno = unsafe { cloudabi_sys_random_get(dest.as_mut_ptr(), dest.len()) };
-    if let Some(code) = NonZeroU32::new(errno as u32) {
-        error!("cloudabi_sys_random_get: failed with {}", errno);
-        Err(Error::from(code))
-    } else {
-        Ok(()) // Zero means success for CloudABI
-    }
-}
diff --git a/getrandom/src/dummy.rs b/getrandom/src/dummy.rs
deleted file mode 100644
index 0c24ba0..0000000
--- a/getrandom/src/dummy.rs
+++ /dev/null
@@ -1,14 +0,0 @@
-// Copyright 2018 Developers of the Rand project.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! A dummy implementation for unsupported targets which always fails
-use crate::{error::UNSUPPORTED, Error};
-
-pub fn getrandom_inner(_: &mut [u8]) -> Result<(), Error> {
-    Err(UNSUPPORTED)
-}
diff --git a/getrandom/src/error.rs b/getrandom/src/error.rs
deleted file mode 100644
index b2cb9a8..0000000
--- a/getrandom/src/error.rs
+++ /dev/null
@@ -1,178 +0,0 @@
-// Copyright 2018 Developers of the Rand project.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-use core::fmt;
-use core::num::NonZeroU32;
-
-/// A small and `no_std` compatible error type.
-///
-/// The [`Error::raw_os_error()`] will indicate if the error is from the OS, and
-/// if so, which error code the OS gave the application. If such an error is
-/// encountered, please consult with your system documentation.
-///
-/// Internally this type is a NonZeroU32, with certain values reserved for
-/// certain purposes, see [`Error::INTERNAL_START`] and [`Error::CUSTOM_START`].
-#[derive(Copy, Clone, Eq, PartialEq)]
-pub struct Error(NonZeroU32);
-
-impl Error {
-    #[deprecated(since = "0.1.7")]
-    /// Unknown error.
-    pub const UNKNOWN: Error = UNSUPPORTED;
-    #[deprecated(since = "0.1.7")]
-    /// System entropy source is unavailable.
-    pub const UNAVAILABLE: Error = UNSUPPORTED;
-
-    /// Codes below this point represent OS Errors (i.e. positive i32 values).
-    /// Codes at or above this point, but below [`Error::CUSTOM_START`] are
-    /// reserved for use by the `rand` and `getrandom` crates.
-    pub const INTERNAL_START: u32 = 1 << 31;
-
-    /// Codes at or above this point can be used by users to define their own
-    /// custom errors.
-    pub const CUSTOM_START: u32 = (1 << 31) + (1 << 30);
-
-    /// Extract the raw OS error code (if this error came from the OS)
-    ///
-    /// This method is identical to `std::io::Error::raw_os_error()`, except
-    /// that it works in `no_std` contexts. If this method returns `None`, the
-    /// error value can still be formatted via the `Display` implementation.
-    #[inline]
-    pub fn raw_os_error(self) -> Option<i32> {
-        if self.0.get() < Self::INTERNAL_START {
-            Some(self.0.get() as i32)
-        } else {
-            None
-        }
-    }
-
-    /// Extract the bare error code.
-    ///
-    /// This code can either come from the underlying OS, or be a custom error.
-    /// Use [`Error::raw_os_error()`] to disambiguate.
-    #[inline]
-    pub fn code(self) -> NonZeroU32 {
-        self.0
-    }
-}
-
-cfg_if! {
-    if #[cfg(unix)] {
-        fn os_err_desc(errno: i32, buf: &mut [u8]) -> Option<&str> {
-            let buf_ptr = buf.as_mut_ptr() as *mut libc::c_char;
-            if unsafe { libc::strerror_r(errno, buf_ptr, buf.len()) } != 0 {
-                return None;
-            }
-
-            // Take up to trailing null byte
-            let n = buf.len();
-            let idx = buf.iter().position(|&b| b == 0).unwrap_or(n);
-            core::str::from_utf8(&buf[..idx]).ok()
-        }
-    } else if #[cfg(target_os = "wasi")] {
-        fn os_err_desc(errno: i32, _buf: &mut [u8]) -> Option<&str> {
-            core::num::NonZeroU16::new(errno as u16)
-                .and_then(wasi::wasi_unstable::error_str)
-        }
-    } else {
-        fn os_err_desc(_errno: i32, _buf: &mut [u8]) -> Option<&str> {
-            None
-        }
-    }
-}
-
-impl fmt::Debug for Error {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        let mut dbg = f.debug_struct("Error");
-        if let Some(errno) = self.raw_os_error() {
-            dbg.field("os_error", &errno);
-            let mut buf = [0u8; 128];
-            if let Some(desc) = os_err_desc(errno, &mut buf) {
-                dbg.field("description", &desc);
-            }
-        } else if let Some(desc) = internal_desc(*self) {
-            dbg.field("internal_code", &self.0.get());
-            dbg.field("description", &desc);
-        } else {
-            dbg.field("unknown_code", &self.0.get());
-        }
-        dbg.finish()
-    }
-}
-
-impl fmt::Display for Error {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        if let Some(errno) = self.raw_os_error() {
-            let mut buf = [0u8; 128];
-            match os_err_desc(errno, &mut buf) {
-                Some(desc) => f.write_str(desc),
-                None => write!(f, "OS Error: {}", errno),
-            }
-        } else if let Some(desc) = internal_desc(*self) {
-            f.write_str(desc)
-        } else {
-            write!(f, "Unknown Error: {}", self.0.get())
-        }
-    }
-}
-
-impl From<NonZeroU32> for Error {
-    fn from(code: NonZeroU32) -> Self {
-        Self(code)
-    }
-}
-
-// TODO: Convert to a function when min_version >= 1.33
-macro_rules! internal_error {
-    ($n:expr) => {
-        Error(unsafe { NonZeroU32::new_unchecked(Error::INTERNAL_START + $n as u16 as u32) })
-    };
-}
-
-/// Internal Error constants
-pub(crate) const UNSUPPORTED: Error = internal_error!(0);
-pub(crate) const ERRNO_NOT_POSITIVE: Error = internal_error!(1);
-pub(crate) const UNKNOWN_IO_ERROR: Error = internal_error!(2);
-pub(crate) const SEC_RANDOM_FAILED: Error = internal_error!(3);
-pub(crate) const RTL_GEN_RANDOM_FAILED: Error = internal_error!(4);
-pub(crate) const FAILED_RDRAND: Error = internal_error!(5);
-pub(crate) const NO_RDRAND: Error = internal_error!(6);
-pub(crate) const BINDGEN_CRYPTO_UNDEF: Error = internal_error!(7);
-pub(crate) const BINDGEN_GRV_UNDEF: Error = internal_error!(8);
-pub(crate) const STDWEB_NO_RNG: Error = internal_error!(9);
-pub(crate) const STDWEB_RNG_FAILED: Error = internal_error!(10);
-pub(crate) const RAND_SECURE_FATAL: Error = internal_error!(11);
-
-fn internal_desc(error: Error) -> Option<&'static str> {
-    match error {
-        UNSUPPORTED => Some("getrandom: this target is not supported"),
-        ERRNO_NOT_POSITIVE => Some("errno: did not return a positive value"),
-        UNKNOWN_IO_ERROR => Some("Unknown std::io::Error"),
-        SEC_RANDOM_FAILED => Some("SecRandomCopyBytes: call failed"),
-        RTL_GEN_RANDOM_FAILED => Some("RtlGenRandom: call failed"),
-        FAILED_RDRAND => Some("RDRAND: failed multiple times: CPU issue likely"),
-        NO_RDRAND => Some("RDRAND: instruction not supported"),
-        BINDGEN_CRYPTO_UNDEF => Some("wasm-bindgen: self.crypto is undefined"),
-        BINDGEN_GRV_UNDEF => Some("wasm-bindgen: crypto.getRandomValues is undefined"),
-        STDWEB_NO_RNG => Some("stdweb: no randomness source available"),
-        STDWEB_RNG_FAILED => Some("stdweb: failed to get randomness"),
-        RAND_SECURE_FATAL => Some("randSecure: random number generator module is not initialized"),
-        _ => None,
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use super::Error;
-    use core::mem::size_of;
-
-    #[test]
-    fn test_size() {
-        assert_eq!(size_of::<Error>(), 4);
-        assert_eq!(size_of::<Result<(), Error>>(), 4);
-    }
-}
diff --git a/getrandom/src/error_impls.rs b/getrandom/src/error_impls.rs
deleted file mode 100644
index 007472e..0000000
--- a/getrandom/src/error_impls.rs
+++ /dev/null
@@ -1,35 +0,0 @@
-// Copyright 2018 Developers of the Rand project.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-extern crate std;
-
-use crate::{error::UNKNOWN_IO_ERROR, Error};
-use core::convert::From;
-use core::num::NonZeroU32;
-use std::io;
-
-impl From<io::Error> for Error {
-    fn from(err: io::Error) -> Self {
-        if let Some(errno) = err.raw_os_error() {
-            if let Some(code) = NonZeroU32::new(errno as u32) {
-                return Error::from(code);
-            }
-        }
-        UNKNOWN_IO_ERROR
-    }
-}
-
-impl From<Error> for io::Error {
-    fn from(err: Error) -> Self {
-        match err.raw_os_error() {
-            Some(errno) => io::Error::from_raw_os_error(errno),
-            None => io::Error::new(io::ErrorKind::Other, err),
-        }
-    }
-}
-
-impl std::error::Error for Error {}
diff --git a/getrandom/src/fuchsia.rs b/getrandom/src/fuchsia.rs
deleted file mode 100644
index 572ff53..0000000
--- a/getrandom/src/fuchsia.rs
+++ /dev/null
@@ -1,20 +0,0 @@
-// Copyright 2018 Developers of the Rand project.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! Implementation for Fuchsia Zircon
-use crate::Error;
-
-#[link(name = "zircon")]
-extern "C" {
-    fn zx_cprng_draw(buffer: *mut u8, length: usize);
-}
-
-pub fn getrandom_inner(dest: &mut [u8]) -> Result<(), Error> {
-    unsafe { zx_cprng_draw(dest.as_mut_ptr(), dest.len()) }
-    Ok(())
-}
diff --git a/getrandom/src/ios.rs b/getrandom/src/ios.rs
deleted file mode 100644
index 30c008c..0000000
--- a/getrandom/src/ios.rs
+++ /dev/null
@@ -1,31 +0,0 @@
-// Copyright 2018 Developers of the Rand project.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! Implementation for iOS
-use crate::{error::SEC_RANDOM_FAILED, Error};
-
-// TODO: Make extern once extern_types feature is stabilized. See:
-//   https://github.com/rust-lang/rust/issues/43467
-#[repr(C)]
-struct SecRandom([u8; 0]);
-
-#[link(name = "Security", kind = "framework")]
-extern "C" {
-    static kSecRandomDefault: *const SecRandom;
-
-    fn SecRandomCopyBytes(rnd: *const SecRandom, count: usize, bytes: *mut u8) -> i32;
-}
-
-pub fn getrandom_inner(dest: &mut [u8]) -> Result<(), Error> {
-    let ret = unsafe { SecRandomCopyBytes(kSecRandomDefault, dest.len(), dest.as_mut_ptr()) };
-    if ret == -1 {
-        Err(SEC_RANDOM_FAILED)
-    } else {
-        Ok(())
-    }
-}
diff --git a/getrandom/src/lib.rs b/getrandom/src/lib.rs
deleted file mode 100644
index c305406..0000000
--- a/getrandom/src/lib.rs
+++ /dev/null
@@ -1,282 +0,0 @@
-// Copyright 2019 Developers of the Rand project.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! Interface to the random number generator of the operating system.
-//!
-//! # Platform sources
-//!
-//! | OS               | interface
-//! |------------------|---------------------------------------------------------
-//! | Linux, Android   | [`getrandom`][1] system call if available, otherwise [`/dev/urandom`][2] after successfully polling `/dev/random`
-//! | Windows          | [`RtlGenRandom`][3]
-//! | macOS            | [`getentropy()`][19] if available, otherwise [`/dev/random`][20] (identical to `/dev/urandom`)
-//! | iOS              | [`SecRandomCopyBytes`][4]
-//! | FreeBSD          | [`getrandom()`][21] if available, otherwise [`kern.arandom`][5]
-//! | OpenBSD          | [`getentropy`][6]
-//! | NetBSD           | [`kern.arandom`][7]
-//! | Dragonfly BSD    | [`/dev/random`][8]
-//! | Solaris, illumos | [`getrandom`][9] system call if available, otherwise [`/dev/random`][10]
-//! | Fuchsia OS       | [`cprng_draw`][11]
-//! | Redox            | [`rand:`][12]
-//! | CloudABI         | [`cloudabi_sys_random_get`][13]
-//! | Haiku            | `/dev/random` (identical to `/dev/urandom`)
-//! | L4RE, SGX, UEFI  | [RDRAND][18]
-//! | Hermit           | [RDRAND][18] as [`sys_rand`][22] is currently broken.
-//! | VxWorks          | `randABytes` after checking entropy pool initialization with `randSecure`
-//! | Web browsers     | [`Crypto.getRandomValues`][14] (see [Support for WebAssembly and asm.js][16])
-//! | Node.js          | [`crypto.randomBytes`][15] (see [Support for WebAssembly and asm.js][16])
-//! | WASI             | [`__wasi_random_get`][17]
-//!
-//! Getrandom doesn't have a blanket implementation for all Unix-like operating
-//! systems that reads from `/dev/urandom`. This ensures all supported operating
-//! systems are using the recommended interface and respect maximum buffer
-//! sizes.
-//!
-//! ## Unsupported targets
-//!
-//! By default, compiling `getrandom` for an unsupported target will result in
-//! a compilation error. If you want to build an application which uses `getrandom`
-//! for such target, you can either:
-//! - Use [`[replace]`][replace] or [`[patch]`][patch] section in your `Cargo.toml`
-//! to switch to a custom implementation with a support of your target.
-//! - Enable the `dummy` feature to have getrandom use an implementation that always
-//! fails at run-time on unsupported targets.
-//!
-//! [replace]: https://doc.rust-lang.org/cargo/reference/manifest.html#the-replace-section
-//! [patch]: https://doc.rust-lang.org/cargo/reference/manifest.html#the-patch-section
-//!
-//! ## Support for WebAssembly and asm.js
-//!
-//! Getrandom supports all of Rust's current `wasm32` targets, and it works with
-//! both Node.js and web browsers. The three Emscripten targets
-//! `asmjs-unknown-emscripten`, `wasm32-unknown-emscripten`, and
-//! `wasm32-experimental-emscripten` use Emscripten's `/dev/random` emulation.
-//! The WASI target `wasm32-wasi` uses the [`__wasi_random_get`][17] function
-//! defined by the WASI standard.
-//!
-//! Getrandom also supports `wasm32-unknown-unknown` by directly calling
-//! JavaScript methods. Rust currently has two ways to do this: [bindgen] and
-//! [stdweb]. Getrandom supports using either one by enabling the
-//! `wasm-bindgen` or `stdweb` crate features. Note that if both features are
-//! enabled, `wasm-bindgen` will be used. If neither feature is enabled, calls
-//! to `getrandom` will always fail at runtime.
-//!
-//! [bindgen]: https://github.com/rust-lang/rust-bindgen
-//! [stdweb]: https://github.com/koute/stdweb
-//!
-//! ## Early boot
-//!
-//! It is possible that early in the boot process the OS hasn't had enough time
-//! yet to collect entropy to securely seed its RNG, especially on virtual
-//! machines.
-//!
-//! Some operating systems always block the thread until the RNG is securely
-//! seeded. This can take anywhere from a few seconds to more than a minute.
-//! Others make a best effort to use a seed from before the shutdown and don't
-//! document much.
-//!
-//! A few, Linux, NetBSD and Solaris, offer a choice between blocking and
-//! getting an error; in these cases we always choose to block.
-//!
-//! On Linux (when the `getrandom` system call is not available) and on NetBSD
-//! reading from `/dev/urandom` never blocks, even when the OS hasn't collected
-//! enough entropy yet. To avoid returning low-entropy bytes, we first read from
-//! `/dev/random` and only switch to `/dev/urandom` once this has succeeded.
-//!
-//! # Error handling
-//!
-//! We always choose failure over returning insecure "random" bytes. In general,
-//! on supported platforms, failure is highly unlikely, though not impossible.
-//! If an error does occur, then it is likely that it will occur on every call to
-//! `getrandom`, hence after the first successful call one can be reasonably
-//! confident that no errors will occur.
-//!
-//! On unsupported platforms, `getrandom` always fails. See the [`Error`] type
-//! for more information on what data is returned on failure.
-//!
-//! [1]: http://man7.org/linux/man-pages/man2/getrandom.2.html
-//! [2]: http://man7.org/linux/man-pages/man4/urandom.4.html
-//! [3]: https://docs.microsoft.com/en-us/windows/desktop/api/ntsecapi/nf-ntsecapi-rtlgenrandom
-//! [4]: https://developer.apple.com/documentation/security/1399291-secrandomcopybytes?language=objc
-//! [5]: https://www.freebsd.org/cgi/man.cgi?query=random&sektion=4
-//! [6]: https://man.openbsd.org/getentropy.2
-//! [7]: https://netbsd.gw.com/cgi-bin/man-cgi?sysctl+7+NetBSD-8.0
-//! [8]: https://leaf.dragonflybsd.org/cgi/web-man?command=random&section=4
-//! [9]: https://docs.oracle.com/cd/E88353_01/html/E37841/getrandom-2.html
-//! [10]: https://docs.oracle.com/cd/E86824_01/html/E54777/random-7d.html
-//! [11]: https://fuchsia.dev/fuchsia-src/zircon/syscalls/cprng_draw
-//! [12]: https://github.com/redox-os/randd/blob/master/src/main.rs
-//! [13]: https://github.com/nuxinl/cloudabi#random_get
-//! [14]: https://www.w3.org/TR/WebCryptoAPI/#Crypto-method-getRandomValues
-//! [15]: https://nodejs.org/api/crypto.html#crypto_crypto_randombytes_size_callback
-//! [16]: #support-for-webassembly-and-asmjs
-//! [17]: https://github.com/WebAssembly/WASI/blob/master/design/WASI-core.md#__wasi_random_get
-//! [18]: https://software.intel.com/en-us/articles/intel-digital-random-number-generator-drng-software-implementation-guide
-//! [19]: https://www.unix.com/man-page/mojave/2/getentropy/
-//! [20]: https://www.unix.com/man-page/mojave/4/random/
-//! [21]: https://www.freebsd.org/cgi/man.cgi?query=getrandom&manpath=FreeBSD+12.0-stable
-//! [22]: https://github.com/hermitcore/libhermit-rs/blob/09c38b0371cee6f56a541400ba453e319e43db53/src/syscalls/random.rs#L21
-
-#![doc(
-    html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk.png",
-    html_favicon_url = "https://www.rust-lang.org/favicon.ico",
-    html_root_url = "https://rust-random.github.io/rand/"
-)]
-#![no_std]
-#![cfg_attr(feature = "stdweb", recursion_limit = "128")]
-#![warn(rust_2018_idioms, unused_lifetimes, missing_docs)]
-
-#[macro_use]
-extern crate cfg_if;
-
-cfg_if! {
-    if #[cfg(feature = "log")] {
-        #[allow(unused)]
-        #[macro_use]
-        extern crate log;
-    } else {
-        #[allow(unused)]
-        macro_rules! error {
-            ($($x:tt)*) => {};
-        }
-        #[allow(unused)]
-        macro_rules! warn {
-            ($($x:tt)*) => {};
-        }
-        #[allow(unused)]
-        macro_rules! info {
-            ($($x:tt)*) => {};
-        }
-    }
-}
-
-mod error;
-pub use crate::error::Error;
-
-#[allow(dead_code)]
-mod util;
-
-#[cfg(target_os = "vxworks")]
-#[allow(dead_code)]
-mod util_libc;
-
-cfg_if! {
-    // Unlike the other Unix, Fuchsia and iOS don't use the libc to make any calls.
-    if #[cfg(any(target_os = "android", target_os = "dragonfly", target_os = "emscripten",
-                 target_os = "freebsd", target_os = "haiku",     target_os = "illumos",
-                 target_os = "linux",   target_os = "macos",     target_os = "netbsd",
-                 target_os = "openbsd", target_os = "redox",     target_os = "solaris"))] {
-        #[allow(dead_code)]
-        mod util_libc;
-        // Keep std-only trait definitions for backwards compatibility
-        mod error_impls;
-    } else if #[cfg(feature = "std")] {
-        mod error_impls;
-    }
-}
-
-// These targets read from a file as a fallback method.
-#[cfg(any(
-    target_os = "android",
-    target_os = "linux",
-    target_os = "macos",
-    target_os = "solaris",
-    target_os = "illumos",
-))]
-mod use_file;
-
-// System-specific implementations.
-//
-// These should all provide getrandom_inner with the same signature as getrandom.
-cfg_if! {
-    if #[cfg(target_os = "android")] {
-        #[path = "linux_android.rs"] mod imp;
-    } else if #[cfg(target_os = "cloudabi")] {
-        #[path = "cloudabi.rs"] mod imp;
-    } else if #[cfg(target_os = "dragonfly")] {
-        #[path = "use_file.rs"] mod imp;
-    } else if #[cfg(target_os = "emscripten")] {
-        #[path = "use_file.rs"] mod imp;
-    } else if #[cfg(target_os = "freebsd")] {
-        #[path = "bsd_arandom.rs"] mod imp;
-    } else if #[cfg(target_os = "fuchsia")] {
-        #[path = "fuchsia.rs"] mod imp;
-    } else if #[cfg(target_os = "haiku")] {
-        #[path = "use_file.rs"] mod imp;
-    } else if #[cfg(target_os = "illumos")] {
-        #[path = "solaris_illumos.rs"] mod imp;
-    } else if #[cfg(target_os = "ios")] {
-        #[path = "ios.rs"] mod imp;
-    } else if #[cfg(target_os = "linux")] {
-        #[path = "linux_android.rs"] mod imp;
-    } else if #[cfg(target_os = "macos")] {
-        #[path = "macos.rs"] mod imp;
-    } else if #[cfg(target_os = "netbsd")] {
-        #[path = "bsd_arandom.rs"] mod imp;
-    } else if #[cfg(target_os = "openbsd")] {
-        #[path = "openbsd.rs"] mod imp;
-    } else if #[cfg(target_os = "redox")] {
-        #[path = "use_file.rs"] mod imp;
-    } else if #[cfg(target_os = "solaris")] {
-        #[path = "solaris_illumos.rs"] mod imp;
-    } else if #[cfg(target_os = "wasi")] {
-        #[path = "wasi.rs"] mod imp;
-    } else if #[cfg(target_os = "vxworks")] {
-        #[path = "vxworks.rs"] mod imp;
-    } else if #[cfg(all(windows, getrandom_uwp))] {
-        #[path = "windows_uwp.rs"] mod imp;
-    } else if #[cfg(windows)] {
-        #[path = "windows.rs"] mod imp;
-    } else if #[cfg(all(target_arch = "x86_64", any(
-                  target_os = "hermit",
-                  target_os = "l4re",
-                  target_os = "uefi",
-                  target_env = "sgx",
-              )))] {
-        #[path = "rdrand.rs"] mod imp;
-    } else if #[cfg(all(target_arch = "wasm32", target_os = "unknown"))] {
-        cfg_if! {
-            if #[cfg(feature = "wasm-bindgen")] {
-                #[path = "wasm32_bindgen.rs"] mod imp;
-            } else if #[cfg(feature = "stdweb")] {
-                #[path = "wasm32_stdweb.rs"] mod imp;
-            } else {
-                // Always have an implementation for wasm32-unknown-unknown.
-                // See https://github.com/rust-random/getrandom/issues/87
-                #[path = "dummy.rs"] mod imp;
-            }
-        }
-    } else if #[cfg(feature = "dummy")] {
-        #[path = "dummy.rs"] mod imp;
-    } else {
-        compile_error!("\
-            target is not supported, for more information see: \
-            https://docs.rs/getrandom/#unsupported-targets\
-        ");
-    }
-}
-
-/// Fill `dest` with random bytes from the system's preferred random number
-/// source.
-///
-/// This function returns an error on any failure, including partial reads. We
-/// make no guarantees regarding the contents of `dest` on error. If `dest` is
-/// empty, `getrandom` immediately returns success, making no calls to the
-/// underlying operating system.
-///
-/// Blocking is possible, at least during early boot; see module documentation.
-///
-/// In general, `getrandom` will be fast enough for interactive usage, though
-/// significantly slower than a user-space CSPRNG; for the latter consider
-/// [`rand::thread_rng`](https://docs.rs/rand/*/rand/fn.thread_rng.html).
-pub fn getrandom(dest: &mut [u8]) -> Result<(), error::Error> {
-    if dest.is_empty() {
-        return Ok(());
-    }
-    imp::getrandom_inner(dest)
-}
diff --git a/getrandom/src/linux_android.rs b/getrandom/src/linux_android.rs
deleted file mode 100644
index a29feb5..0000000
--- a/getrandom/src/linux_android.rs
+++ /dev/null
@@ -1,44 +0,0 @@
-// Copyright 2018 Developers of the Rand project.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! Implementation for Linux / Android
-use crate::util::LazyBool;
-use crate::util_libc::{last_os_error, sys_fill_exact};
-use crate::{use_file, Error};
-
-pub fn getrandom_inner(dest: &mut [u8]) -> Result<(), Error> {
-    static HAS_GETRANDOM: LazyBool = LazyBool::new();
-    if HAS_GETRANDOM.unsync_init(is_getrandom_available) {
-        sys_fill_exact(dest, |buf| unsafe {
-            getrandom(buf.as_mut_ptr() as *mut libc::c_void, buf.len(), 0)
-        })
-    } else {
-        use_file::getrandom_inner(dest)
-    }
-}
-
-fn is_getrandom_available() -> bool {
-    let res = unsafe { getrandom(core::ptr::null_mut(), 0, libc::GRND_NONBLOCK) };
-    if res < 0 {
-        match last_os_error().raw_os_error() {
-            Some(libc::ENOSYS) => false, // No kernel support
-            Some(libc::EPERM) => false,  // Blocked by seccomp
-            _ => true,
-        }
-    } else {
-        true
-    }
-}
-
-unsafe fn getrandom(
-    buf: *mut libc::c_void,
-    buflen: libc::size_t,
-    flags: libc::c_uint,
-) -> libc::ssize_t {
-    libc::syscall(libc::SYS_getrandom, buf, buflen, flags) as libc::ssize_t
-}
diff --git a/getrandom/src/macos.rs b/getrandom/src/macos.rs
deleted file mode 100644
index c3bc533..0000000
--- a/getrandom/src/macos.rs
+++ /dev/null
@@ -1,34 +0,0 @@
-// Copyright 2019 Developers of the Rand project.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! Implementation for macOS
-use crate::util_libc::{last_os_error, Weak};
-use crate::{use_file, Error};
-use core::mem;
-
-type GetEntropyFn = unsafe extern "C" fn(*mut u8, libc::size_t) -> libc::c_int;
-
-pub fn getrandom_inner(dest: &mut [u8]) -> Result<(), Error> {
-    static GETENTROPY: Weak = unsafe { Weak::new("getentropy\0") };
-    if let Some(fptr) = GETENTROPY.ptr() {
-        let func: GetEntropyFn = unsafe { mem::transmute(fptr) };
-        for chunk in dest.chunks_mut(256) {
-            let ret = unsafe { func(chunk.as_mut_ptr(), chunk.len()) };
-            if ret != 0 {
-                let err = last_os_error();
-                error!("getentropy syscall failed");
-                return Err(err);
-            }
-        }
-        Ok(())
-    } else {
-        // We fallback to reading from /dev/random instead of SecRandomCopyBytes
-        // to avoid high startup costs and linking the Security framework.
-        use_file::getrandom_inner(dest)
-    }
-}
diff --git a/getrandom/src/openbsd.rs b/getrandom/src/openbsd.rs
deleted file mode 100644
index e1ac179..0000000
--- a/getrandom/src/openbsd.rs
+++ /dev/null
@@ -1,23 +0,0 @@
-// Copyright 2018 Developers of the Rand project.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! Implementation for OpenBSD
-use crate::util_libc::last_os_error;
-use crate::Error;
-
-pub fn getrandom_inner(dest: &mut [u8]) -> Result<(), Error> {
-    for chunk in dest.chunks_mut(256) {
-        let ret = unsafe { libc::getentropy(chunk.as_mut_ptr() as *mut libc::c_void, chunk.len()) };
-        if ret == -1 {
-            let err = last_os_error();
-            error!("libc::getentropy call failed");
-            return Err(err);
-        }
-    }
-    Ok(())
-}
diff --git a/getrandom/src/rdrand.rs b/getrandom/src/rdrand.rs
deleted file mode 100644
index e441682..0000000
--- a/getrandom/src/rdrand.rs
+++ /dev/null
@@ -1,90 +0,0 @@
-// Copyright 2018 Developers of the Rand project.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! Implementation for SGX using RDRAND instruction
-use crate::error::{FAILED_RDRAND, NO_RDRAND};
-#[cfg(not(target_feature = "rdrand"))]
-use crate::util::LazyBool;
-use crate::Error;
-use core::arch::x86_64::_rdrand64_step;
-use core::mem;
-
-// Recommendation from "Intel® Digital Random Number Generator (DRNG) Software
-// Implementation Guide" - Section 5.2.1 and "Intel® 64 and IA-32 Architectures
-// Software Developer’s Manual" - Volume 1 - Section 7.3.17.1.
-const RETRY_LIMIT: usize = 10;
-const WORD_SIZE: usize = mem::size_of::<u64>();
-
-#[target_feature(enable = "rdrand")]
-unsafe fn rdrand() -> Result<[u8; WORD_SIZE], Error> {
-    for _ in 0..RETRY_LIMIT {
-        let mut el = mem::zeroed();
-        if _rdrand64_step(&mut el) == 1 {
-            // AMD CPUs from families 14h to 16h (pre Ryzen) sometimes fail to
-            // set CF on bogus random data, so we check these values explicitly.
-            // See https://github.com/systemd/systemd/issues/11810#issuecomment-489727505
-            // We perform this check regardless of target to guard against
-            // any implementation that incorrectly fails to set CF.
-            if el != 0 && el != !0 {
-                return Ok(el.to_ne_bytes());
-            }
-            error!("RDRAND returned {:X}, CPU RNG may be broken", el);
-            // Keep looping in case this was a false positive.
-        }
-    }
-    Err(FAILED_RDRAND)
-}
-
-// "rdrand" target feature requires "+rdrnd" flag, see https://github.com/rust-lang/rust/issues/49653.
-#[cfg(all(target_env = "sgx", not(target_feature = "rdrand")))]
-compile_error!(
-    "SGX targets require 'rdrand' target feature. Enable by using -C target-feature=+rdrnd."
-);
-
-#[cfg(target_feature = "rdrand")]
-fn is_rdrand_supported() -> bool {
-    true
-}
-
-// TODO use is_x86_feature_detected!("rdrand") when that works in core. See:
-// https://github.com/rust-lang-nursery/stdsimd/issues/464
-#[cfg(not(target_feature = "rdrand"))]
-fn is_rdrand_supported() -> bool {
-    use core::arch::x86_64::__cpuid;
-    // SAFETY: All x86_64 CPUs support CPUID leaf 1
-    const FLAG: u32 = 1 << 30;
-    static HAS_RDRAND: LazyBool = LazyBool::new();
-    HAS_RDRAND.unsync_init(|| unsafe { (__cpuid(1).ecx & FLAG) != 0 })
-}
-
-pub fn getrandom_inner(dest: &mut [u8]) -> Result<(), Error> {
-    if !is_rdrand_supported() {
-        return Err(NO_RDRAND);
-    }
-
-    // SAFETY: After this point, rdrand is supported, so calling the rdrand
-    // functions is not undefined behavior.
-    unsafe { rdrand_exact(dest) }
-}
-
-#[target_feature(enable = "rdrand")]
-unsafe fn rdrand_exact(dest: &mut [u8]) -> Result<(), Error> {
-    // We use chunks_exact_mut instead of chunks_mut as it allows almost all
-    // calls to memcpy to be elided by the compiler.
-    let mut chunks = dest.chunks_exact_mut(WORD_SIZE);
-    for chunk in chunks.by_ref() {
-        chunk.copy_from_slice(&rdrand()?);
-    }
-
-    let tail = chunks.into_remainder();
-    let n = tail.len();
-    if n > 0 {
-        tail.copy_from_slice(&rdrand()?[..n]);
-    }
-    Ok(())
-}
diff --git a/getrandom/src/solaris_illumos.rs b/getrandom/src/solaris_illumos.rs
deleted file mode 100644
index 9473123..0000000
--- a/getrandom/src/solaris_illumos.rs
+++ /dev/null
@@ -1,44 +0,0 @@
-// Copyright 2018 Developers of the Rand project.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! Implementation for the Solaris family
-//!
-//! Read from `/dev/random`, with chunks of limited size (256 bytes).
-//! `/dev/random` uses the Hash_DRBG with SHA512 algorithm from NIST SP 800-90A.
-//! `/dev/urandom` uses the FIPS 186-2 algorithm, which is considered less
-//! secure. We choose to read from `/dev/random`.
-//!
-//! Since Solaris 11.3 and mid-2015 illumos, the `getrandom` syscall is available.
-//! To make sure we can compile on both Solaris and its derivatives, as well as
-//! function, we check for the existence of getrandom(2) in libc by calling
-//! libc::dlsym.
-use crate::util_libc::{sys_fill_exact, Weak};
-use crate::{use_file, Error};
-use core::mem;
-
-#[cfg(target_os = "illumos")]
-type GetRandomFn = unsafe extern "C" fn(*mut u8, libc::size_t, libc::c_uint) -> libc::ssize_t;
-#[cfg(target_os = "solaris")]
-type GetRandomFn = unsafe extern "C" fn(*mut u8, libc::size_t, libc::c_uint) -> libc::c_int;
-
-pub fn getrandom_inner(dest: &mut [u8]) -> Result<(), Error> {
-    static GETRANDOM: Weak = unsafe { Weak::new("getrandom\0") };
-    if let Some(fptr) = GETRANDOM.ptr() {
-        let func: GetRandomFn = unsafe { mem::transmute(fptr) };
-        // 256 bytes is the lowest common denominator across all the Solaris
-        // derived platforms for atomically obtaining random data.
-        for chunk in dest.chunks_mut(256) {
-            sys_fill_exact(chunk, |buf| unsafe {
-                func(buf.as_mut_ptr(), buf.len(), 0) as libc::ssize_t
-            })?
-        }
-        Ok(())
-    } else {
-        use_file::getrandom_inner(dest)
-    }
-}
diff --git a/getrandom/src/use_file.rs b/getrandom/src/use_file.rs
deleted file mode 100644
index d3adaf2..0000000
--- a/getrandom/src/use_file.rs
+++ /dev/null
@@ -1,73 +0,0 @@
-// Copyright 2018 Developers of the Rand project.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! Implementations that just need to read from a file
-use crate::util_libc::{last_os_error, open_readonly, sys_fill_exact, LazyFd};
-use crate::Error;
-
-#[cfg(target_os = "redox")]
-const FILE_PATH: &str = "rand:\0";
-#[cfg(any(
-    target_os = "dragonfly",
-    target_os = "emscripten",
-    target_os = "haiku",
-    target_os = "macos",
-    target_os = "solaris",
-    target_os = "illumos"
-))]
-const FILE_PATH: &str = "/dev/random\0";
-
-pub fn getrandom_inner(dest: &mut [u8]) -> Result<(), Error> {
-    static FD: LazyFd = LazyFd::new();
-    let fd = FD.init(init_file).ok_or_else(last_os_error)?;
-    let read = |buf: &mut [u8]| unsafe { libc::read(fd, buf.as_mut_ptr() as *mut _, buf.len()) };
-
-    if cfg!(target_os = "emscripten") {
-        // `Crypto.getRandomValues` documents `dest` should be at most 65536 bytes.
-        for chunk in dest.chunks_mut(65536) {
-            sys_fill_exact(chunk, read)?;
-        }
-    } else {
-        sys_fill_exact(dest, read)?;
-    }
-    Ok(())
-}
-
-cfg_if! {
-    if #[cfg(any(target_os = "android", target_os = "linux"))] {
-        fn init_file() -> Option<libc::c_int> {
-            // Poll /dev/random to make sure it is ok to read from /dev/urandom.
-            let mut pfd = libc::pollfd {
-                fd: unsafe { open_readonly("/dev/random\0")? },
-                events: libc::POLLIN,
-                revents: 0,
-            };
-
-            let ret = loop {
-                // A negative timeout means an infinite timeout.
-                let res = unsafe { libc::poll(&mut pfd, 1, -1) };
-                if res == 1 {
-                    break unsafe { open_readonly("/dev/urandom\0") };
-                } else if res < 0 {
-                    let e = last_os_error().raw_os_error();
-                    if e == Some(libc::EINTR) || e == Some(libc::EAGAIN) {
-                        continue;
-                    }
-                }
-                // We either hard failed, or poll() returned the wrong pfd.
-                break None;
-            };
-            unsafe { libc::close(pfd.fd) };
-            ret
-        }
-    } else {
-        fn init_file() -> Option<libc::c_int> {
-            unsafe { open_readonly(FILE_PATH) }
-        }
-    }
-}
diff --git a/getrandom/src/util.rs b/getrandom/src/util.rs
deleted file mode 100644
index e0e9307..0000000
--- a/getrandom/src/util.rs
+++ /dev/null
@@ -1,96 +0,0 @@
-// Copyright 2019 Developers of the Rand project.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-use core::sync::atomic::{AtomicUsize, Ordering::Relaxed};
-
-// This structure represents a lazily initialized static usize value. Useful
-// when it is preferable to just rerun initialization instead of locking.
-// Both unsync_init and sync_init will invoke an init() function until it
-// succeeds, then return the cached value for future calls.
-//
-// Both methods support init() "failing". If the init() method returns UNINIT,
-// that value will be returned as normal, but will not be cached.
-//
-// Users should only depend on the _value_ returned by init() functions.
-// Specifically, for the following init() function:
-//      fn init() -> usize {
-//          a();
-//          let v = b();
-//          c();
-//          v
-//      }
-// the effects of c() or writes to shared memory will not necessarily be
-// observed and additional synchronization methods with be needed.
-pub struct LazyUsize(AtomicUsize);
-
-impl LazyUsize {
-    pub const fn new() -> Self {
-        Self(AtomicUsize::new(Self::UNINIT))
-    }
-
-    // The initialization is not completed.
-    pub const UNINIT: usize = usize::max_value();
-    // The initialization is currently running.
-    pub const ACTIVE: usize = usize::max_value() - 1;
-
-    // Runs the init() function at least once, returning the value of some run
-    // of init(). Multiple callers can run their init() functions in parallel.
-    // init() should always return the same value, if it succeeds.
-    pub fn unsync_init(&self, init: impl FnOnce() -> usize) -> usize {
-        // Relaxed ordering is fine, as we only have a single atomic variable.
-        let mut val = self.0.load(Relaxed);
-        if val == Self::UNINIT {
-            val = init();
-            self.0.store(val, Relaxed);
-        }
-        val
-    }
-
-    // Synchronously runs the init() function. Only one caller will have their
-    // init() function running at a time, and exactly one successful call will
-    // be run. init() returning UNINIT or ACTIVE will be considered a failure,
-    // and future calls to sync_init will rerun their init() function.
-    pub fn sync_init(&self, init: impl FnOnce() -> usize, mut wait: impl FnMut()) -> usize {
-        // Common and fast path with no contention. Don't wast time on CAS.
-        match self.0.load(Relaxed) {
-            Self::UNINIT | Self::ACTIVE => {}
-            val => return val,
-        }
-        // Relaxed ordering is fine, as we only have a single atomic variable.
-        loop {
-            match self.0.compare_and_swap(Self::UNINIT, Self::ACTIVE, Relaxed) {
-                Self::UNINIT => {
-                    let val = init();
-                    self.0.store(
-                        match val {
-                            Self::UNINIT | Self::ACTIVE => Self::UNINIT,
-                            val => val,
-                        },
-                        Relaxed,
-                    );
-                    return val;
-                }
-                Self::ACTIVE => wait(),
-                val => return val,
-            }
-        }
-    }
-}
-
-// Identical to LazyUsize except with bool instead of usize.
-pub struct LazyBool(LazyUsize);
-
-impl LazyBool {
-    pub const fn new() -> Self {
-        Self(LazyUsize::new())
-    }
-
-    pub fn unsync_init(&self, init: impl FnOnce() -> bool) -> bool {
-        self.0.unsync_init(|| init() as usize) != 0
-    }
-}
diff --git a/getrandom/src/util_libc.rs b/getrandom/src/util_libc.rs
deleted file mode 100644
index 5a05170..0000000
--- a/getrandom/src/util_libc.rs
+++ /dev/null
@@ -1,143 +0,0 @@
-// Copyright 2019 Developers of the Rand project.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-use crate::error::ERRNO_NOT_POSITIVE;
-use crate::util::LazyUsize;
-use crate::Error;
-use core::num::NonZeroU32;
-use core::ptr::NonNull;
-
-cfg_if! {
-    if #[cfg(any(target_os = "netbsd", target_os = "openbsd", target_os = "android"))] {
-        use libc::__errno as errno_location;
-    } else if #[cfg(any(target_os = "linux", target_os = "emscripten", target_os = "redox"))] {
-        use libc::__errno_location as errno_location;
-    } else if #[cfg(any(target_os = "solaris", target_os = "illumos"))] {
-        use libc::___errno as errno_location;
-    } else if #[cfg(any(target_os = "macos", target_os = "freebsd", target_os = "dragonfly"))] {
-        use libc::__error as errno_location;
-    } else if #[cfg(target_os = "haiku")] {
-        use libc::_errnop as errno_location;
-    }
-}
-
-pub fn last_os_error() -> Error {
-    #[cfg(not(target_os = "vxworks"))]
-    let errno = unsafe { *errno_location() };
-    #[cfg(target_os = "vxworks")]
-    let errno = unsafe { libc::errnoGet() };
-    if errno > 0 {
-        Error::from(NonZeroU32::new(errno as u32).unwrap())
-    } else {
-        ERRNO_NOT_POSITIVE
-    }
-}
-
-// Fill a buffer by repeatedly invoking a system call. The `sys_fill` function:
-//   - should return -1 and set errno on failure
-//   - should return the number of bytes written on success
-pub fn sys_fill_exact(
-    mut buf: &mut [u8],
-    sys_fill: impl Fn(&mut [u8]) -> libc::ssize_t,
-) -> Result<(), Error> {
-    while !buf.is_empty() {
-        let res = sys_fill(buf);
-        if res < 0 {
-            let err = last_os_error();
-            // We should try again if the call was interrupted.
-            if err.raw_os_error() != Some(libc::EINTR) {
-                return Err(err);
-            }
-        } else {
-            // We don't check for EOF (ret = 0) as the data we are reading
-            // should be an infinite stream of random bytes.
-            buf = &mut buf[(res as usize)..];
-        }
-    }
-    Ok(())
-}
-
-// A "weak" binding to a C function that may or may not be present at runtime.
-// Used for supporting newer OS features while still building on older systems.
-// F must be a function pointer of type `unsafe extern "C" fn`. Based off of the
-// weak! macro in libstd.
-pub struct Weak {
-    name: &'static str,
-    addr: LazyUsize,
-}
-
-impl Weak {
-    // Construct a binding to a C function with a given name. This function is
-    // unsafe because `name` _must_ be null terminated.
-    pub const unsafe fn new(name: &'static str) -> Self {
-        Self {
-            name,
-            addr: LazyUsize::new(),
-        }
-    }
-
-    // Return a function pointer if present at runtime. Otherwise, return null.
-    pub fn ptr(&self) -> Option<NonNull<libc::c_void>> {
-        let addr = self.addr.unsync_init(|| unsafe {
-            libc::dlsym(libc::RTLD_DEFAULT, self.name.as_ptr() as *const _) as usize
-        });
-        NonNull::new(addr as *mut _)
-    }
-}
-
-pub struct LazyFd(LazyUsize);
-
-impl LazyFd {
-    pub const fn new() -> Self {
-        Self(LazyUsize::new())
-    }
-
-    // If init() returns Some(x), x should be nonnegative.
-    pub fn init(&self, init: impl FnOnce() -> Option<libc::c_int>) -> Option<libc::c_int> {
-        let fd = self.0.sync_init(
-            || match init() {
-                // OK as val >= 0 and val <= c_int::MAX < usize::MAX
-                Some(val) => val as usize,
-                None => LazyUsize::UNINIT,
-            },
-            || unsafe {
-                // We are usually waiting on an open(2) syscall to complete,
-                // which typically takes < 10us if the file is a device.
-                // However, we might end up waiting much longer if the entropy
-                // pool isn't initialized, but even in that case, this loop will
-                // consume a negligible amount of CPU on most platforms.
-                libc::usleep(10);
-            },
-        );
-        match fd {
-            LazyUsize::UNINIT => None,
-            val => Some(val as libc::c_int),
-        }
-    }
-}
-
-cfg_if! {
-    if #[cfg(any(target_os = "linux", target_os = "emscripten"))] {
-        use libc::open64 as open;
-    } else {
-        use libc::open;
-    }
-}
-
-// SAFETY: path must be null terminated, FD must be manually closed.
-pub unsafe fn open_readonly(path: &str) -> Option<libc::c_int> {
-    debug_assert!(path.as_bytes().last() == Some(&0));
-    let fd = open(path.as_ptr() as *mut _, libc::O_RDONLY | libc::O_CLOEXEC);
-    if fd < 0 {
-        return None;
-    }
-    // O_CLOEXEC works on all Unix targets except for older Linux kernels (pre
-    // 2.6.23), so we also use an ioctl to make sure FD_CLOEXEC is set.
-    #[cfg(target_os = "linux")]
-    libc::ioctl(fd, libc::FIOCLEX);
-    Some(fd)
-}
diff --git a/getrandom/src/vxworks.rs b/getrandom/src/vxworks.rs
deleted file mode 100644
index a2fe52a..0000000
--- a/getrandom/src/vxworks.rs
+++ /dev/null
@@ -1,35 +0,0 @@
-// Copyright 2018 Developers of the Rand project.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! Implementation for VxWorks
-use crate::error::{Error, RAND_SECURE_FATAL};
-use crate::util_libc::last_os_error;
-use core::sync::atomic::{AtomicBool, Ordering::Relaxed};
-
-pub fn getrandom_inner(dest: &mut [u8]) -> Result<(), Error> {
-    static RNG_INIT: AtomicBool = AtomicBool::new(false);
-    while !RNG_INIT.load(Relaxed) {
-        let ret = unsafe { libc::randSecure() };
-        if ret < 0 {
-            return Err(RAND_SECURE_FATAL);
-        } else if ret > 0 {
-            RNG_INIT.store(true, Relaxed);
-            break;
-        }
-        unsafe { libc::usleep(10) };
-    }
-
-    // Prevent overflow of i32
-    for chunk in dest.chunks_mut(i32::max_value() as usize) {
-        let ret = unsafe { libc::randABytes(chunk.as_mut_ptr(), chunk.len() as i32) };
-        if ret != 0 {
-            return Err(last_os_error());
-        }
-    }
-    Ok(())
-}
diff --git a/getrandom/src/wasi.rs b/getrandom/src/wasi.rs
deleted file mode 100644
index 713c1ab..0000000
--- a/getrandom/src/wasi.rs
+++ /dev/null
@@ -1,19 +0,0 @@
-// Copyright 2018 Developers of the Rand project.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! Implementation for WASI
-use crate::Error;
-use core::num;
-use wasi::wasi_unstable::random_get;
-
-pub fn getrandom_inner(dest: &mut [u8]) -> Result<(), Error> {
-    random_get(dest).map_err(|e: num::NonZeroU16| {
-        // convert wasi's NonZeroU16 error into getrandom's NonZeroU32 error
-        num::NonZeroU32::new(e.get() as u32).unwrap().into()
-    })
-}
diff --git a/getrandom/src/wasm32_bindgen.rs b/getrandom/src/wasm32_bindgen.rs
deleted file mode 100644
index 86839a0..0000000
--- a/getrandom/src/wasm32_bindgen.rs
+++ /dev/null
@@ -1,113 +0,0 @@
-// Copyright 2018 Developers of the Rand project.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! Implementation for WASM via wasm-bindgen
-extern crate std;
-
-use core::cell::RefCell;
-use core::mem;
-use std::thread_local;
-
-use wasm_bindgen::prelude::*;
-
-use crate::error::{BINDGEN_CRYPTO_UNDEF, BINDGEN_GRV_UNDEF};
-use crate::Error;
-
-#[derive(Clone, Debug)]
-enum RngSource {
-    Node(NodeCrypto),
-    Browser(BrowserCrypto),
-}
-
-// JsValues are always per-thread, so we initialize RngSource for each thread.
-//   See: https://github.com/rustwasm/wasm-bindgen/pull/955
-thread_local!(
-    static RNG_SOURCE: RefCell<Option<RngSource>> = RefCell::new(None);
-);
-
-pub fn getrandom_inner(dest: &mut [u8]) -> Result<(), Error> {
-    assert_eq!(mem::size_of::<usize>(), 4);
-
-    RNG_SOURCE.with(|f| {
-        let mut source = f.borrow_mut();
-        if source.is_none() {
-            *source = Some(getrandom_init()?);
-        }
-
-        match source.as_ref().unwrap() {
-            RngSource::Node(n) => n.random_fill_sync(dest),
-            RngSource::Browser(n) => {
-                // see https://developer.mozilla.org/en-US/docs/Web/API/Crypto/getRandomValues
-                //
-                // where it says:
-                //
-                // > A QuotaExceededError DOMException is thrown if the
-                // > requested length is greater than 65536 bytes.
-                for chunk in dest.chunks_mut(65536) {
-                    n.get_random_values(chunk)
-                }
-            }
-        };
-        Ok(())
-    })
-}
-
-fn getrandom_init() -> Result<RngSource, Error> {
-    if let Ok(self_) = Global::get_self() {
-        // If `self` is defined then we're in a browser somehow (main window
-        // or web worker). Here we want to try to use
-        // `crypto.getRandomValues`, but if `crypto` isn't defined we assume
-        // we're in an older web browser and the OS RNG isn't available.
-
-        let crypto = self_.crypto();
-        if crypto.is_undefined() {
-            return Err(BINDGEN_CRYPTO_UNDEF);
-        }
-
-        // Test if `crypto.getRandomValues` is undefined as well
-        let crypto: BrowserCrypto = crypto.into();
-        if crypto.get_random_values_fn().is_undefined() {
-            return Err(BINDGEN_GRV_UNDEF);
-        }
-
-        return Ok(RngSource::Browser(crypto));
-    }
-
-    return Ok(RngSource::Node(node_require("crypto")));
-}
-
-#[wasm_bindgen]
-extern "C" {
-    type Global;
-    #[wasm_bindgen(getter, catch, static_method_of = Global, js_class = self, js_name = self)]
-    fn get_self() -> Result<Self_, JsValue>;
-
-    type Self_;
-    #[wasm_bindgen(method, getter, structural)]
-    fn crypto(me: &Self_) -> JsValue;
-
-    #[derive(Clone, Debug)]
-    type BrowserCrypto;
-
-    // TODO: these `structural` annotations here ideally wouldn't be here to
-    // avoid a JS shim, but for now with feature detection they're
-    // unavoidable.
-    #[wasm_bindgen(method, js_name = getRandomValues, structural, getter)]
-    fn get_random_values_fn(me: &BrowserCrypto) -> JsValue;
-    #[wasm_bindgen(method, js_name = getRandomValues, structural)]
-    fn get_random_values(me: &BrowserCrypto, buf: &mut [u8]);
-
-    #[wasm_bindgen(js_name = require)]
-    fn node_require(s: &str) -> NodeCrypto;
-
-    #[derive(Clone, Debug)]
-    type NodeCrypto;
-
-    #[wasm_bindgen(method, js_name = randomFillSync, structural)]
-    fn random_fill_sync(me: &NodeCrypto, buf: &mut [u8]);
-}
diff --git a/getrandom/src/wasm32_stdweb.rs b/getrandom/src/wasm32_stdweb.rs
deleted file mode 100644
index 6e5e78a..0000000
--- a/getrandom/src/wasm32_stdweb.rs
+++ /dev/null
@@ -1,114 +0,0 @@
-// Copyright 2018 Developers of the Rand project.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! Implementation for WASM via stdweb
-extern crate std;
-
-use core::mem;
-
-use stdweb::js;
-use stdweb::unstable::TryInto;
-use stdweb::web::error::Error as WebError;
-
-use crate::error::{STDWEB_NO_RNG, STDWEB_RNG_FAILED};
-use crate::Error;
-use std::sync::Once;
-
-#[derive(Clone, Copy, Debug)]
-enum RngSource {
-    Browser,
-    Node,
-}
-
-pub fn getrandom_inner(dest: &mut [u8]) -> Result<(), Error> {
-    assert_eq!(mem::size_of::<usize>(), 4);
-    static ONCE: Once = Once::new();
-    static mut RNG_SOURCE: Result<RngSource, Error> = Ok(RngSource::Node);
-
-    // SAFETY: RNG_SOURCE is only written once, before being read.
-    ONCE.call_once(|| unsafe {
-        RNG_SOURCE = getrandom_init();
-    });
-    getrandom_fill(unsafe { RNG_SOURCE }?, dest)
-}
-
-fn getrandom_init() -> Result<RngSource, Error> {
-    let result = js! {
-        try {
-            if (
-                typeof self === "object" &&
-                typeof self.crypto === "object" &&
-                typeof self.crypto.getRandomValues === "function"
-            ) {
-                return { success: true, ty: 1 };
-            }
-
-            if (typeof require("crypto").randomBytes === "function") {
-                return { success: true, ty: 2 };
-            }
-
-            return { success: false, error: new Error("not supported") };
-        } catch(err) {
-            return { success: false, error: err };
-        }
-    };
-
-    if js! { return @{ result.as_ref() }.success } == true {
-        let ty = js! { return @{ result }.ty };
-
-        if ty == 1 {
-            Ok(RngSource::Browser)
-        } else if ty == 2 {
-            Ok(RngSource::Node)
-        } else {
-            unreachable!()
-        }
-    } else {
-        let _err: WebError = js! { return @{ result }.error }.try_into().unwrap();
-        error!("getrandom unavailable: {}", _err);
-        Err(STDWEB_NO_RNG)
-    }
-}
-
-fn getrandom_fill(source: RngSource, dest: &mut [u8]) -> Result<(), Error> {
-    for chunk in dest.chunks_mut(65536) {
-        let len = chunk.len() as u32;
-        let ptr = chunk.as_mut_ptr() as i32;
-
-        let result = match source {
-            RngSource::Browser => js! {
-                try {
-                    let array = new Uint8Array(@{ len });
-                    self.crypto.getRandomValues(array);
-                    HEAPU8.set(array, @{ ptr });
-
-                    return { success: true };
-                } catch(err) {
-                    return { success: false, error: err };
-                }
-            },
-            RngSource::Node => js! {
-                try {
-                    let bytes = require("crypto").randomBytes(@{ len });
-                    HEAPU8.set(new Uint8Array(bytes), @{ ptr });
-
-                    return { success: true };
-                } catch(err) {
-                    return { success: false, error: err };
-                }
-            },
-        };
-
-        if js! { return @{ result.as_ref() }.success } != true {
-            let _err: WebError = js! { return @{ result }.error }.try_into().unwrap();
-            error!("getrandom failed: {}", _err);
-            return Err(STDWEB_RNG_FAILED);
-        }
-    }
-    Ok(())
-}
diff --git a/getrandom/src/windows.rs b/getrandom/src/windows.rs
deleted file mode 100644
index e1b8df6..0000000
--- a/getrandom/src/windows.rs
+++ /dev/null
@@ -1,26 +0,0 @@
-// Copyright 2018 Developers of the Rand project.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! Implementation for Windows
-use crate::{error::RTL_GEN_RANDOM_FAILED, Error};
-
-extern "system" {
-    #[link_name = "SystemFunction036"]
-    fn RtlGenRandom(RandomBuffer: *mut u8, RandomBufferLength: u32) -> u8;
-}
-
-pub fn getrandom_inner(dest: &mut [u8]) -> Result<(), Error> {
-    // Prevent overflow of u32
-    for chunk in dest.chunks_mut(u32::max_value() as usize) {
-        let ret = unsafe { RtlGenRandom(chunk.as_mut_ptr(), chunk.len() as u32) };
-        if ret == 0 {
-            return Err(RTL_GEN_RANDOM_FAILED);
-        }
-    }
-    Ok(())
-}
diff --git a/getrandom/src/windows_uwp.rs b/getrandom/src/windows_uwp.rs
deleted file mode 100644
index 586c6f6..0000000
--- a/getrandom/src/windows_uwp.rs
+++ /dev/null
@@ -1,59 +0,0 @@
-// Copyright 2018 Developers of the Rand project.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! Implementation for Windows UWP targets. After deprecation of Windows XP
-//! and Vista, this can supersede the `RtlGenRandom`-based implementation.
-use crate::Error;
-use core::{ffi::c_void, num::NonZeroU32, ptr};
-
-const BCRYPT_USE_SYSTEM_PREFERRED_RNG: u32 = 0x00000002;
-
-extern "system" {
-    fn BCryptGenRandom(
-        hAlgorithm: *mut c_void,
-        pBuffer: *mut u8,
-        cbBuffer: u32,
-        dwFlags: u32,
-    ) -> u32;
-}
-
-pub fn getrandom_inner(dest: &mut [u8]) -> Result<(), Error> {
-    // Prevent overflow of u32
-    for chunk in dest.chunks_mut(u32::max_value() as usize) {
-        let ret = unsafe {
-            BCryptGenRandom(
-                ptr::null_mut(),
-                chunk.as_mut_ptr(),
-                chunk.len() as u32,
-                BCRYPT_USE_SYSTEM_PREFERRED_RNG,
-            )
-        };
-        // NTSTATUS codes use two highest bits for severity status
-        match ret >> 30 {
-            0b01 => {
-                info!("BCryptGenRandom: information code 0x{:08X}", ret);
-            }
-            0b10 => {
-                warn!("BCryptGenRandom: warning code 0x{:08X}", ret);
-            }
-            0b11 => {
-                error!("BCryptGenRandom: failed with 0x{:08X}", ret);
-                // We zeroize the highest bit, so the error code will reside
-                // inside the range of designated for OS codes.
-                let code = ret ^ (1 << 31);
-                // SAFETY: the second highest bit is always equal to one,
-                // so it's impossible to get zero. Unfortunately compiler
-                // is not smart enough to figure out it yet.
-                let code = unsafe { NonZeroU32::new_unchecked(code) };
-                return Err(Error::from(code));
-            }
-            _ => (),
-        }
-    }
-    Ok(())
-}