From d0d9683df8398696147e7ee1fcffb2e4e957008c Mon Sep 17 00:00:00 2001 From: Daniel Mueller Date: Sat, 4 Apr 2020 14:39:19 -0700 Subject: 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 --- getrandom/src/util_libc.rs | 143 --------------------------------------------- 1 file changed, 143 deletions(-) delete mode 100644 getrandom/src/util_libc.rs (limited to 'getrandom/src/util_libc.rs') 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 or the MIT license -// , 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> { - 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) -> Option { - 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 { - 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) -} -- cgit v1.2.1