Rollup merge of rust-lang#67774 - oxalica:more-statx, r=alexcrichton

Try statx for all linux-gnu target.

After rust-lang/libc#1577, which is contained in `libc` 0.2.66,  provides `SYS_statx` for all Linux platform, so we can try to use `statx` for ~all Linux target~ all linux-gnu targets.

Unfortunately, `struct statx` and `fn statx` is not a part of public interface of musl (currently), ~we still need to invoke it through `syscall`~ we does **not** support statx for musl or other libc impls currently.

Previous PR: rust-lang#65094

cc @alexcrichton

Author: JohnTitor

src/libstd/sys/unix/fs.rs

@@ -51,44 +51,22 @@ pub use crate::sys_common::fs::remove_dir_all;
 
 pub struct File(FileDesc);
 
-// FIXME: This should be available on Linux with all `target_arch` and `target_env`.
-// https://github.com/rust-lang/libc/issues/1545
+// FIXME: This should be available on Linux with all `target_env`.
+// But currently only glibc exposes `statx` fn and structs.
+// We don't want to import unverified raw C structs here directly.
+// https://github.com/rust-lang/rust/pull/67774
 macro_rules! cfg_has_statx {
     ({ $($then_tt:tt)* } else { $($else_tt:tt)* }) => {
         cfg_if::cfg_if! {
-            if #[cfg(all(target_os = "linux", target_env = "gnu", any(
-                target_arch = "x86",
-                target_arch = "arm",
-                // target_arch = "mips",
-                target_arch = "powerpc",
-                target_arch = "x86_64",
-                // target_arch = "aarch64",
-                target_arch = "powerpc64",
-                // target_arch = "mips64",
-                // target_arch = "s390x",
-                target_arch = "sparc64",
-                target_arch = "riscv64",
-            )))] {
+            if #[cfg(all(target_os = "linux", target_env = "gnu"))] {
                 $($then_tt)*
             } else {
                 $($else_tt)*
             }
         }
     };
     ($($block_inner:tt)*) => {
-        #[cfg(all(target_os = "linux", target_env = "gnu", any(
-            target_arch = "x86",
-            target_arch = "arm",
-            // target_arch = "mips",
-            target_arch = "powerpc",
-            target_arch = "x86_64",
-            // target_arch = "aarch64",
-            target_arch = "powerpc64",
-            // target_arch = "mips64",
-            // target_arch = "s390x",
-            target_arch = "sparc64",
-            target_arch = "riscv64",
-        )))]
+        #[cfg(all(target_os = "linux", target_env = "gnu"))]
         {
             $($block_inner)*
         }