1 files changed, 0 insertions, 143 deletions
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)
-}