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package hcserror
import (
"fmt"
"syscall"
)
const ERROR_GEN_FAILURE = syscall.Errno(31)
type HcsError struct {
title string
rest string
Err error
}
func (e *HcsError) Error() string {
s := e.title
if len(s) > 0 && s[len(s)-1] != ' ' {
s += " "
}
s += fmt.Sprintf("failed in Win32: %s (0x%x)", e.Err, Win32FromError(e.Err))
if e.rest != "" {
if e.rest[0] != ' ' {
s += " "
}
s += e.rest
}
return s
}
func New(err error, title, rest string) error {
// Pass through DLL errors directly since they do not originate from HCS.
if _, ok := err.(*syscall.DLLError); ok {
return err
}
return &HcsError{title, rest, err}
}
func Errorf(err error, title, format string, a ...interface{}) error {
return New(err, title, fmt.Sprintf(format, a...))
}
func Win32FromError(err error) uint32 {
if herr, ok := err.(*HcsError); ok {
return Win32FromError(herr.Err)
}
if code, ok := err.(syscall.Errno); ok {
return uint32(code)
}
return uint32(ERROR_GEN_FAILURE)
}
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