eloop_other.go

     1  // Copyright 2024 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  //go:build aix || darwin || dragonfly || freebsd || linux || openbsd || solaris || wasip1
     6  
     7  package os
     8  
     9  import (
    10  	"runtime"
    11  	"syscall"
    12  )
    13  
    14  // isNoFollowErr reports whether err may result from O_NOFOLLOW blocking an open operation.
    15  func isNoFollowErr(err error) bool {
    16  	switch err {
    17  	case syscall.ELOOP, syscall.EMLINK:
    18  		return true
    19  	}
    20  	if runtime.GOOS == "dragonfly" {
    21  		// Dragonfly appears to return EINVAL from openat in this case.
    22  		if err == syscall.EINVAL {
    23  			return true
    24  		}
    25  	}
    26  	return false
    27  }
    28
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