Rollup merge of #90955 - JohnTitor:os-error-123-as-invalid-input, r=m-ou-se

Rename `FilenameTooLong` to `InvalidFilename` and also use it for Windows' `ERROR_INVALID_NAME`

Address https://github.com/rust-lang/rust/issues/90940#issuecomment-970157931
`ERROR_INVALID_NAME` (i.e. "The filename, directory name, or volume label syntax is incorrect") happens if we pass an invalid filename, directory name, or label syntax, so mapping as `InvalidInput` is reasonable to me.

library/std/src/io/error.rs

@@ -296,12 +296,11 @@ pub enum ErrorKind {
     /// The filesystem does not support making so many hardlinks to the same file.
     #[unstable(feature = "io_error_more", issue = "86442")]
     TooManyLinks,
-    /// Filename too long.
+    /// A filename was invalid.
     ///
-    /// The limit might be from the underlying filesystem or API, or an administratively imposed
-    /// resource limit.
+    /// This error can also cause if it exceeded the filename length limit.
     #[unstable(feature = "io_error_more", issue = "86442")]
-    FilenameTooLong,
+    InvalidFilename,
     /// Program argument list too long.
     ///
     /// When trying to run an external program, a system or process limit on the size of the
@@ -382,12 +381,12 @@ pub(crate) fn as_str(&self) -> &'static str {
             DirectoryNotEmpty => "directory not empty",
             ExecutableFileBusy => "executable file busy",
             FileTooLarge => "file too large",
-            FilenameTooLong => "filename too long",
             FilesystemLoop => "filesystem loop or indirection limit (e.g. symlink loop)",
             FilesystemQuotaExceeded => "filesystem quota exceeded",
             HostUnreachable => "host unreachable",
             Interrupted => "operation interrupted",
             InvalidData => "invalid data",
+            InvalidFilename => "invalid filename",
             InvalidInput => "invalid input parameter",
             IsADirectory => "is a directory",
             NetworkDown => "network down",

library/std/src/io/error/repr_bitpacked.rs

@@ -315,7 +315,7 @@ fn kind_from_prim(ek: u32) -> Option<ErrorKind> {
         Deadlock,
         CrossesDevices,
         TooManyLinks,
-        FilenameTooLong,
+        InvalidFilename,
         ArgumentListTooLong,
         Interrupted,
         Other,

library/std/src/sys/unix/mod.rs

@@ -159,7 +159,7 @@ pub fn decode_error_kind(errno: i32) -> ErrorKind {
         libc::ENOSPC => StorageFull,
         libc::ENOSYS => Unsupported,
         libc::EMLINK => TooManyLinks,
-        libc::ENAMETOOLONG => FilenameTooLong,
+        libc::ENAMETOOLONG => InvalidFilename,
         libc::ENETDOWN => NetworkDown,
         libc::ENETUNREACH => NetworkUnreachable,
         libc::ENOTCONN => NotConnected,

library/std/src/sys/windows/mod.rs

@@ -71,6 +71,7 @@ pub fn decode_error_kind(errno: i32) -> ErrorKind {
         c::ERROR_FILE_NOT_FOUND => return NotFound,
         c::ERROR_PATH_NOT_FOUND => return NotFound,
         c::ERROR_NO_DATA => return BrokenPipe,
+        c::ERROR_INVALID_NAME => return InvalidFilename,
         c::ERROR_INVALID_PARAMETER => return InvalidInput,
         c::ERROR_NOT_ENOUGH_MEMORY | c::ERROR_OUTOFMEMORY => return OutOfMemory,
         c::ERROR_SEM_TIMEOUT
@@ -104,7 +105,7 @@ pub fn decode_error_kind(errno: i32) -> ErrorKind {
         c::ERROR_POSSIBLE_DEADLOCK => return Deadlock,
         c::ERROR_NOT_SAME_DEVICE => return CrossesDevices,
         c::ERROR_TOO_MANY_LINKS => return TooManyLinks,
-        c::ERROR_FILENAME_EXCED_RANGE => return FilenameTooLong,
+        c::ERROR_FILENAME_EXCED_RANGE => return InvalidFilename,
         _ => {}
     }