redox: Unmask most of fs, time

Redox supports most of the *at functions as well as most of the `time`
header.

Author: joshuamegnauth54

src/backend/libc/event/types.rs

@@ -1,18 +1,25 @@
-#[cfg(any(linux_kernel, target_os = "freebsd", target_os = "illumos"))]
+#[cfg(any(
+    linux_kernel,
+    target_os = "freebsd",
+    target_os = "illumos",
+    target_os = "redox"
+))]
 use crate::backend::c;
 #[cfg(any(
     linux_kernel,
     target_os = "freebsd",
     target_os = "illumos",
-    target_os = "espidf"
+    target_os = "espidf",
+    target_os = "redox"
 ))]
 use bitflags::bitflags;
 
 #[cfg(any(
     linux_kernel,
     target_os = "freebsd",
     target_os = "illumos",
-    target_os = "espidf"
+    target_os = "espidf",
+    target_os = "redox"
 ))]
 bitflags! {
     /// `EFD_*` flags for use with [`eventfd`].

src/backend/libc/fs/mod.rs

@@ -1,4 +1,4 @@
-#[cfg(all(feature = "alloc", not(any(target_os = "espidf", target_os = "redox"))))]
+#[cfg(all(feature = "alloc", not(target_os = "espidf")))]
 pub(crate) mod dir;
 #[cfg(linux_kernel)]
 pub mod inotify;

src/backend/libc/fs/syscalls.rs

@@ -1,7 +1,7 @@
 //! libc syscalls supporting `rustix::fs`.
 
 use crate::backend::c;
-#[cfg(any(not(target_os = "redox"), feature = "alloc"))]
+#[cfg(feature = "alloc")]
 use crate::backend::conv::ret_usize;
 use crate::backend::conv::{borrowed_fd, c_str, ret, ret_c_int, ret_off_t, ret_owned_fd};
 use crate::fd::{BorrowedFd, OwnedFd};
@@ -12,7 +12,7 @@ use crate::ffi::CStr;
 use crate::ffi::CString;
 #[cfg(not(any(target_os = "espidf", target_os = "horizon", target_os = "vita")))]
 use crate::fs::Access;
-#[cfg(not(any(target_os = "espidf", target_os = "redox")))]
+#[cfg(not(target_os = "espidf"))]
 use crate::fs::AtFlags;
 #[cfg(not(any(
     netbsdlike,
@@ -287,7 +287,6 @@ pub(crate) fn readlink(path: &CStr, buf: &mut [u8]) -> io::Result<usize> {
     unsafe { ret_usize(c::readlink(c_str(path), buf.as_mut_ptr().cast(), buf.len()) as isize) }
 }
 
-#[cfg(not(target_os = "redox"))]
 #[inline]
 pub(crate) unsafe fn readlinkat(
     dirfd: BorrowedFd<'_>,
@@ -301,7 +300,6 @@ pub(crate) fn mkdir(path: &CStr, mode: Mode) -> io::Result<()> {
     unsafe { ret(c::mkdir(c_str(path), mode.bits() as c::mode_t)) }
 }
 
-#[cfg(not(target_os = "redox"))]
 pub(crate) fn mkdirat(dirfd: BorrowedFd<'_>, path: &CStr, mode: Mode) -> io::Result<()> {
     unsafe {
         ret(c::mkdirat(
@@ -337,7 +335,7 @@ pub(crate) fn link(old_path: &CStr, new_path: &CStr) -> io::Result<()> {
     unsafe { ret(c::link(c_str(old_path), c_str(new_path))) }
 }
 
-#[cfg(not(any(target_os = "espidf", target_os = "redox")))]
+#[cfg(not(target_os = "espidf"))]
 pub(crate) fn linkat(
     old_dirfd: BorrowedFd<'_>,
     old_path: &CStr,
@@ -400,7 +398,7 @@ pub(crate) fn unlink(path: &CStr) -> io::Result<()> {
     unsafe { ret(c::unlink(c_str(path))) }
 }
 
-#[cfg(not(any(target_os = "espidf", target_os = "redox")))]
+#[cfg(not(target_os = "espidf"))]
 pub(crate) fn unlinkat(dirfd: BorrowedFd<'_>, path: &CStr, flags: AtFlags) -> io::Result<()> {
     // macOS ≤ 10.9 lacks `unlinkat`.
     #[cfg(target_os = "macos")]
@@ -627,7 +625,6 @@ pub(crate) fn symlink(old_path: &CStr, new_path: &CStr) -> io::Result<()> {
     unsafe { ret(c::symlink(c_str(old_path), c_str(new_path))) }
 }
 
-#[cfg(not(target_os = "redox"))]
 pub(crate) fn symlinkat(
     old_path: &CStr,
     new_dirfd: BorrowedFd<'_>,
@@ -729,7 +726,7 @@ pub(crate) fn lstat(path: &CStr) -> io::Result<Stat> {
     }
 }
 
-#[cfg(not(any(target_os = "espidf", target_os = "redox")))]
+#[cfg(not(target_os = "espidf"))]
 pub(crate) fn statat(dirfd: BorrowedFd<'_>, path: &CStr, flags: AtFlags) -> io::Result<Stat> {
     // See the comments in `fstat` about using `crate::fs::statx` here.
     #[cfg(all(
@@ -811,7 +808,6 @@ pub(crate) fn access(path: &CStr, access: Access) -> io::Result<()> {
     target_os = "emscripten",
     target_os = "espidf",
     target_os = "horizon",
-    target_os = "redox",
     target_os = "vita"
 )))]
 pub(crate) fn accessat(
@@ -879,12 +875,7 @@ pub(crate) fn accessat(
     Ok(())
 }
 
-#[cfg(not(any(
-    target_os = "espidf",
-    target_os = "horizon",
-    target_os = "redox",
-    target_os = "vita"
-)))]
+#[cfg(not(any(target_os = "espidf", target_os = "horizon", target_os = "vita")))]
 pub(crate) fn utimensat(
     dirfd: BorrowedFd<'_>,
     path: &CStr,
@@ -1092,12 +1083,7 @@ pub(crate) fn chmod(path: &CStr, mode: Mode) -> io::Result<()> {
     unsafe { ret(c::chmod(c_str(path), mode.bits() as c::mode_t)) }
 }
 
-#[cfg(not(any(
-    linux_kernel,
-    target_os = "espidf",
-    target_os = "redox",
-    target_os = "wasi"
-)))]
+#[cfg(not(any(linux_kernel, target_os = "espidf", target_os = "wasi")))]
 pub(crate) fn chmodat(
     dirfd: BorrowedFd<'_>,
     path: &CStr,
@@ -1175,7 +1161,7 @@ pub(crate) fn fclonefileat(
     }
 }
 
-#[cfg(not(any(target_os = "espidf", target_os = "redox", target_os = "wasi")))]
+#[cfg(not(any(target_os = "espidf", target_os = "wasi")))]
 pub(crate) fn chownat(
     dirfd: BorrowedFd<'_>,
     path: &CStr,
@@ -1199,7 +1185,6 @@ pub(crate) fn chownat(
     apple,
     target_os = "espidf",
     target_os = "horizon",
-    target_os = "redox",
     target_os = "vita",
     target_os = "wasi"
 )))]

src/backend/libc/thread/syscalls.rs

@@ -14,14 +14,12 @@ use crate::pid::Pid;
     target_os = "espidf",
     target_os = "haiku",
     target_os = "openbsd",
-    target_os = "redox",
     target_os = "vita",
     target_os = "wasi",
 )))]
 use crate::thread::ClockId;
 #[cfg(linux_kernel)]
 use crate::thread::{Cpuid, MembarrierCommand, MembarrierQuery};
-#[cfg(not(target_os = "redox"))]
 use crate::thread::{NanosleepRelativeResult, Timespec};
 #[cfg(all(target_env = "gnu", fix_y2038))]
 use crate::timespec::LibcTimespec;
@@ -54,7 +52,6 @@ weak!(fn __nanosleep64(*const LibcTimespec, *mut LibcTimespec) -> c::c_int);
     target_os = "haiku",
     target_os = "horizon",
     target_os = "openbsd",
-    target_os = "redox",
     target_os = "vita",
     target_os = "wasi",
 )))]

src/backend/libc/time/syscalls.rs

@@ -7,7 +7,8 @@ use crate::backend::conv::ret;
     target_os = "freebsd",
     target_os = "fuchsia",
     target_os = "illumos",
-    target_os = "netbsd"
+    target_os = "netbsd",
+    target_os = "redox"
 ))]
 #[cfg(any(all(target_env = "gnu", fix_y2038), not(fix_y2038)))]
 use crate::backend::time::types::LibcItimerspec;
@@ -17,11 +18,7 @@ use crate::io;
 #[cfg(not(fix_y2038))]
 use crate::timespec::as_libc_timespec_mut_ptr;
 #[cfg(not(fix_y2038))]
-#[cfg(not(any(
-    target_os = "redox",
-    target_os = "wasi",
-    all(apple, not(target_os = "macos"))
-)))]
+#[cfg(not(any(target_os = "wasi", all(apple, not(target_os = "macos")))))]
 use crate::timespec::as_libc_timespec_ptr;
 #[cfg(all(target_env = "gnu", fix_y2038))]
 use crate::timespec::LibcTimespec;
@@ -32,7 +29,8 @@ use core::mem::MaybeUninit;
     target_os = "freebsd",
     target_os = "fuchsia",
     target_os = "illumos",
-    target_os = "netbsd"
+    target_os = "netbsd",
+    target_os = "redox"
 ))]
 use {
     crate::backend::conv::{borrowed_fd, ret_owned_fd},
@@ -53,7 +51,7 @@ weak!(fn __timerfd_gettime64(c::c_int, *mut LibcItimerspec) -> c::c_int);
 #[cfg(all(target_env = "gnu", fix_y2038))]
 weak!(fn __timerfd_settime64(c::c_int, c::c_int, *const LibcItimerspec, *mut LibcItimerspec) -> c::c_int);
 
-#[cfg(not(any(target_os = "redox", target_os = "wasi")))]
+#[cfg(not(target_os = "wasi"))]
 #[inline]
 #[must_use]
 pub(crate) fn clock_getres(id: ClockId) -> Timespec {
@@ -258,11 +256,7 @@ fn clock_gettime_dynamic_old(id: c::clockid_t) -> io::Result<Timespec> {
     })
 }
 
-#[cfg(not(any(
-    target_os = "redox",
-    target_os = "wasi",
-    all(apple, not(target_os = "macos"))
-)))]
+#[cfg(not(any(target_os = "wasi", all(apple, not(target_os = "macos")))))]
 #[inline]
 pub(crate) fn clock_settime(id: ClockId, timespec: Timespec) -> io::Result<()> {
     // Old 32-bit version: libc has `clock_gettime` but it is not y2038 safe by
@@ -292,11 +286,7 @@ pub(crate) fn clock_settime(id: ClockId, timespec: Timespec) -> io::Result<()> {
     }
 }
 
-#[cfg(not(any(
-    target_os = "redox",
-    target_os = "wasi",
-    all(apple, not(target_os = "macos"))
-)))]
+#[cfg(not(any(target_os = "wasi", all(apple, not(target_os = "macos")))))]
 #[cfg(fix_y2038)]
 fn clock_settime_old(id: ClockId, timespec: Timespec) -> io::Result<()> {
     let old_timespec = c::timespec {
@@ -315,7 +305,8 @@ fn clock_settime_old(id: ClockId, timespec: Timespec) -> io::Result<()> {
     target_os = "freebsd",
     target_os = "fuchsia",
     target_os = "illumos",
-    target_os = "netbsd"
+    target_os = "netbsd",
+    target_os = "redox"
 ))]
 pub(crate) fn timerfd_create(id: TimerfdClockId, flags: TimerfdFlags) -> io::Result<OwnedFd> {
     unsafe { ret_owned_fd(c::timerfd_create(id as c::clockid_t, bitflags_bits!(flags))) }
@@ -326,7 +317,8 @@ pub(crate) fn timerfd_create(id: TimerfdClockId, flags: TimerfdFlags) -> io::Res
     target_os = "freebsd",
     target_os = "fuchsia",
     target_os = "illumos",
-    target_os = "netbsd"
+    target_os = "netbsd",
+    target_os = "redox"
 ))]
 pub(crate) fn timerfd_settime(
     fd: BorrowedFd<'_>,
@@ -374,7 +366,8 @@ pub(crate) fn timerfd_settime(
     target_os = "freebsd",
     target_os = "fuchsia",
     target_os = "illumos",
-    target_os = "netbsd"
+    target_os = "netbsd",
+    target_os = "redox"
 ))]
 #[cfg(fix_y2038)]
 fn timerfd_settime_old(
@@ -447,7 +440,8 @@ fn timerfd_settime_old(
     target_os = "freebsd",
     target_os = "fuchsia",
     target_os = "illumos",
-    target_os = "netbsd"
+    target_os = "netbsd",
+    target_os = "redox"
 ))]
 pub(crate) fn timerfd_gettime(fd: BorrowedFd<'_>) -> io::Result<Itimerspec> {
     // Old 32-bit version: libc has `timerfd_gettime` but it is not y2038 safe
@@ -484,7 +478,8 @@ pub(crate) fn timerfd_gettime(fd: BorrowedFd<'_>) -> io::Result<Itimerspec> {
     target_os = "freebsd",
     target_os = "fuchsia",
     target_os = "illumos",
-    target_os = "netbsd"
+    target_os = "netbsd",
+    target_os = "redox"
 ))]
 #[cfg(fix_y2038)]
 fn timerfd_gettime_old(fd: BorrowedFd<'_>) -> io::Result<Itimerspec> {

src/event/mod.rs

@@ -11,7 +11,7 @@ pub mod epoll;
 mod eventfd;
 #[cfg(bsd)]
 pub mod kqueue;
-#[cfg(not(any(windows, target_os = "redox", target_os = "wasi")))]
+#[cfg(not(any(windows, target_os = "wasi")))]
 mod pause;
 mod poll;
 #[cfg(solarish)]
@@ -24,10 +24,11 @@ pub use crate::timespec::{Nsecs, Secs, Timespec};
     linux_kernel,
     target_os = "freebsd",
     target_os = "illumos",
-    target_os = "espidf"
+    target_os = "espidf",
+    target_os = "redox"
 ))]
 pub use eventfd::{eventfd, EventfdFlags};
-#[cfg(not(any(windows, target_os = "redox", target_os = "wasi")))]
+#[cfg(not(any(windows, target_os = "wasi")))]
 pub use pause::*;
 pub use poll::{poll, PollFd, PollFlags};
 #[cfg(any(bsd, linux_kernel, windows, target_os = "wasi"))]