patch os, syscall, io/fs: Errno, Stdin/out/err

internal/lib/os/os.go

@@ -19,7 +19,6 @@ package os
 // llgo:skipall
 import (
 	"errors"
-	"io/fs"
 	"runtime"
 	_ "unsafe"
 
@@ -31,38 +30,6 @@ const (
 	LLGoPackage = true
 )
 
-type timeout interface {
-	Timeout() bool
-}
-
-type PathError = fs.PathError
-
-// SyscallError records an error from a specific system call.
-type SyscallError struct {
-	Syscall string
-	Err     error
-}
-
-func (e *SyscallError) Error() string { return e.Syscall + ": " + e.Err.Error() }
-
-func (e *SyscallError) Unwrap() error { return e.Err }
-
-// Timeout reports whether this error represents a timeout.
-func (e *SyscallError) Timeout() bool {
-	t, ok := e.Err.(timeout)
-	return ok && t.Timeout()
-}
-
-// NewSyscallError returns, as an error, a new SyscallError
-// with the given system call name and error details.
-// As a convenience, if err is nil, NewSyscallError returns nil.
-func NewSyscallError(syscall string, err error) error {
-	if err == nil {
-		return nil
-	}
-	return &SyscallError{syscall, err}
-}
-
 // LinkError records an error during a link or symlink or rename
 // system call and the paths that caused it.
 type LinkError struct {