1 files changed, 19 insertions, 8 deletions
diff --git a/vendor/rustix/src/fs/at.rs b/vendor/rustix/src/fs/at.rs
index 5bd90fab5..0434b56ef 100644
--- a/vendor/rustix/src/fs/at.rs
+++ b/vendor/rustix/src/fs/at.rs
@@ -3,26 +3,32 @@
 //! The `dirfd` argument to these functions may be a file descriptor for a
 //! directory, or the special value [`CWD`].
 //!
-//! [`cwd`]: crate::fs::cwd::CWD
+//! [`cwd`]: crate::fs::CWD
 
 use crate::fd::OwnedFd;
-use crate::ffi::{CStr, CString};
 #[cfg(apple)]
 use crate::fs::CloneFlags;
 #[cfg(not(any(apple, target_os = "espidf", target_os = "wasi")))]
 use crate::fs::FileType;
 #[cfg(linux_kernel)]
 use crate::fs::RenameFlags;
+#[cfg(not(any(target_os = "aix", target_os = "espidf")))]
+use crate::fs::Stat;
 #[cfg(not(any(target_os = "espidf", target_os = "wasi")))]
 use crate::fs::{Gid, Uid};
 use crate::fs::{Mode, OFlags};
-use crate::path::SMALL_PATH_BUFFER_SIZE;
 use crate::{backend, io, path};
-use alloc::vec::Vec;
-use backend::fd::{AsFd, BorrowedFd};
+use backend::fd::AsFd;
+#[cfg(feature = "alloc")]
+use {
+    crate::ffi::{CStr, CString},
+    crate::path::SMALL_PATH_BUFFER_SIZE,
+    alloc::vec::Vec,
+    backend::fd::BorrowedFd,
+};
 #[cfg(not(target_os = "espidf"))]
 use {
-    crate::fs::{Access, AtFlags, Stat, Timestamps},
+    crate::fs::{Access, AtFlags, Timestamps},
     crate::timespec::Nsecs,
 };
 
@@ -76,6 +82,7 @@ pub fn openat<P: path::Arg, Fd: AsFd>(
 ///
 /// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/readlinkat.html
 /// [Linux]: https://man7.org/linux/man-pages/man2/readlinkat.2.html
+#[cfg(feature = "alloc")]
 #[inline]
 pub fn readlinkat<P: path::Arg, Fd: AsFd, B: Into<Vec<u8>>>(
     dirfd: Fd,
@@ -85,6 +92,7 @@ pub fn readlinkat<P: path::Arg, Fd: AsFd, B: Into<Vec<u8>>>(
     path.into_with_c_str(|path| _readlinkat(dirfd.as_fd(), path, reuse.into()))
 }
 
+#[cfg(feature = "alloc")]
 #[allow(unsafe_code)]
 fn _readlinkat(dirfd: BorrowedFd<'_>, path: &CStr, mut buffer: Vec<u8>) -> io::Result<CString> {
     buffer.clear();
@@ -96,8 +104,10 @@ fn _readlinkat(dirfd: BorrowedFd<'_>, path: &CStr, mut buffer: Vec<u8>) -> io::R
 
         debug_assert!(nread <= buffer.capacity());
         if nread < buffer.capacity() {
-            // SAFETY from the man page:
+            // SAFETY: From the [documentation]:
             // "On success, these calls return the number of bytes placed in buf."
+            //
+            // [documentation]: https://man7.org/linux/man-pages/man2/readlinkat.2.html
             unsafe {
                 buffer.set_len(nread);
             }
@@ -280,7 +290,8 @@ pub fn symlinkat<P: path::Arg, Q: path::Arg, Fd: AsFd>(
 /// [Linux]: https://man7.org/linux/man-pages/man2/fstatat.2.html
 /// [`Mode::from_raw_mode`]: crate::fs::Mode::from_raw_mode
 /// [`FileType::from_raw_mode`]: crate::fs::FileType::from_raw_mode
-#[cfg(not(target_os = "espidf"))]
+// TODO: Add `stat64xat` to upstream libc bindings and reenable this for AIX.
+#[cfg(not(any(target_os = "aix", target_os = "espidf")))]
 #[inline]
 #[doc(alias = "fstatat")]
 pub fn statat<P: path::Arg, Fd: AsFd>(dirfd: Fd, path: P, flags: AtFlags) -> io::Result<Stat> {