updates

src/fcntl.rs

@@ -193,7 +193,7 @@ feature! {
 #![feature = "fs"]
 
 #[cfg(unix)]
-pub const PATH_MAX: usize = libc::PATH_MAX;
+pub const PATH_MAX: usize = libc::PATH_MAX as usize;
 
 #[cfg(target_os = "wasi")]
 pub const PATH_MAX: usize = 4096; // max is whatever the host system is... so guess posix?
@@ -318,7 +318,7 @@ fn inner_readlink<P: ?Sized + NixPath>(
     dirfd: Option<RawFd>,
     path: &P,
 ) -> Result<OsString> {
-    let mut v = Vec::with_capacity(libc::PATH_MAX as usize);
+    let mut v = Vec::with_capacity(PATH_MAX as usize);
 
     {
         // simple case: result is strictly less than `PATH_MAX`
@@ -371,7 +371,7 @@ fn inner_readlink<P: ?Sized + NixPath>(
         } else {
             // If lstat doesn't cooperate, or reports an error, be a little less
             // precise.
-            (libc::PATH_MAX as usize).max(128) << 1
+            (PATH_MAX as usize).max(128) << 1
         }
     };
 

src/sys/stat.rs

@@ -12,7 +12,7 @@ pub use libc::{dev_t, mode_t};
 #[cfg(not(target_os = "redox"))]
 use crate::fcntl::{at_rawfd, AtFlags};
 use crate::sys::time::{TimeSpec, TimeVal};
-use crate::{errno::Errno, NixPath, Result, RawFd};
+use crate::{errno::Errno, NixPath, RawFd, Result};
 use std::mem;
 
 libc_bitflags!(
@@ -32,7 +32,6 @@ libc_bitflags!(
 libc_bitflags! {
     /// "File mode / permissions" flags.
     pub struct Mode: mode_t {
-        #[cfg(not(target_os = "redox"))]
         /// Read, write and execute for owner.
         S_IRWXU;
         /// Read for owner.
@@ -367,12 +366,12 @@ pub fn utimes<P: ?Sized + NixPath>(
     atime: &TimeVal,
     mtime: &TimeVal,
 ) -> Result<()> {
-        let times: [libc::timeval; 2] = [*atime.as_ref(), *mtime.as_ref()];
-        let res = path.with_nix_path(|cstr| unsafe {
-            libc::utimes(cstr.as_ptr(), &times[0])
-        })?;
+    let times: [libc::timeval; 2] = [*atime.as_ref(), *mtime.as_ref()];
+    let res = path.with_nix_path(|cstr| unsafe {
+        libc::utimes(cstr.as_ptr(), &times[0])
+    })?;
 
-        Errno::result(res).map(drop)
+    Errno::result(res).map(drop)
 }
 
 /// Change the access and modification times of a file without following symlinks.

src/sys/uio.rs

@@ -4,7 +4,10 @@ use crate::errno::Errno;
 use crate::{Result, RawFd};
 use libc::{self, c_int, c_void, off_t, size_t};
 use std::io::{IoSlice, IoSliceMut};
-use std::os::fd::{AsFd, AsRawFd};
+#[cfg(unix)]
+use std::os::unix::prelude::{AsFd, AsRawFd};
+#[cfg(target_os = "wasi")]
+use std::os::wasi::prelude::{AsFd, AsRawFd};
 
 /// Low-level vectored write to a raw file descriptor
 ///

src/unistd.rs

@@ -3917,7 +3917,6 @@ feature! {
 /// (see [`ttyname(3)`](https://man7.org/linux/man-pages/man3/ttyname.3.html)).
 #[cfg(not(target_os = "fuchsia"))]
 pub fn ttyname(fd: RawFd) -> Result<PathBuf> {
-    const PATH_MAX: usize = libc::PATH_MAX as usize;
     let mut buf = vec![0_u8; PATH_MAX];
     let c_buf = buf.as_mut_ptr() as *mut libc::c_char;