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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package os
import syscall "syscall"
// An Error can represent any printable error condition.
type Error interface {
String() string
}
// A helper type that can be embedded or wrapped to simplify satisfying
// Error.
type ErrorString string
func (e ErrorString) String() string {
return string(e)
}
// NewError converts s to an ErrorString, which satisfies the Error interface.
func NewError(s string) Error {
return ErrorString(s)
}
// Errno is the Unix error number. Names such as EINVAL are simple
// wrappers to convert the error number into an Error.
type Errno int64
func (e Errno) String() string {
return syscall.Errstr(int(e))
}
// ErrnoToError converts errno to an Error (underneath, an Errno).
// It returns nil for the "no error" errno.
func ErrnoToError(errno int) Error {
if errno == 0 {
return nil
}
return Errno(errno)
}
// Commonly known Unix errors.
var (
EPERM Error = Errno(syscall.EPERM);
ENOENT Error = Errno(syscall.ENOENT);
ESRCH Error = Errno(syscall.ESRCH);
EINTR Error = Errno(syscall.EINTR);
EIO Error = Errno(syscall.EIO);
ENXIO Error = Errno(syscall.ENXIO);
E2BIG Error = Errno(syscall.E2BIG);
ENOEXEC Error = Errno(syscall.ENOEXEC);
EBADF Error = Errno(syscall.EBADF);
ECHILD Error = Errno(syscall.ECHILD);
EDEADLK Error = Errno(syscall.EDEADLK);
ENOMEM Error = Errno(syscall.ENOMEM);
EACCES Error = Errno(syscall.EACCES);
EFAULT Error = Errno(syscall.EFAULT);
ENOTBLK Error = Errno(syscall.ENOTBLK);
EBUSY Error = Errno(syscall.EBUSY);
EEXIST Error = Errno(syscall.EEXIST);
EXDEV Error = Errno(syscall.EXDEV);
ENODEV Error = Errno(syscall.ENODEV);
ENOTDIR Error = Errno(syscall.ENOTDIR);
EISDIR Error = Errno(syscall.EISDIR);
EINVAL Error = Errno(syscall.EINVAL);
ENFILE Error = Errno(syscall.ENFILE);
EMFILE Error = Errno(syscall.EMFILE);
ENOTTY Error = Errno(syscall.ENOTTY);
ETXTBSY Error = Errno(syscall.ETXTBSY);
EFBIG Error = Errno(syscall.EFBIG);
ENOSPC Error = Errno(syscall.ENOSPC);
ESPIPE Error = Errno(syscall.ESPIPE);
EROFS Error = Errno(syscall.EROFS);
EMLINK Error = Errno(syscall.EMLINK);
EPIPE Error = Errno(syscall.EPIPE);
EAGAIN Error = Errno(syscall.EAGAIN);
EDOM Error = Errno(syscall.EDOM);
ERANGE Error = Errno(syscall.ERANGE);
EADDRINUSE Error = Errno(syscall.EADDRINUSE);
ECONNREFUSED Error = Errno(syscall.ECONNREFUSED);
ENAMETOOLONG Error = Errno(syscall.ENAMETOOLONG);
)
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