package sys

import "github.com/tetratelabs/wazero/experimental/sys"

Index ¶

• type Errno
• func UnwrapOSError(err error) Errno
• func (e Errno) Error() string
• func (e Errno) Unwrap() error

Types ¶

type Errno ¶

type Errno uint16

Errno is a subset of POSIX errno used by wazero interfaces. Zero is not an error. Other values should not be interpreted numerically, rather by constants prefixed with 'E'.

See https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html

const (
	EACCES Errno = iota + 1
	EAGAIN
	EBADF
	EEXIST
	EFAULT
	EINTR
	EINVAL
	EIO
	EISDIR
	ELOOP
	ENAMETOOLONG
	ENOENT
	ENOSYS
	ENOTDIR
	ENOTEMPTY
	ENOTSOCK
	ENOTSUP
	EPERM
	EROFS
)

This is a subset of errors to reduce implementation burden. `wasip1` defines almost all POSIX error numbers, but not all are used in practice. wazero will add ones needed in POSIX order, as needed by functions that explicitly document returning them.

https://github.com/WebAssembly/WASI/blob/snapshot-01/phases/snapshot/docs.md#-errno-enumu16

func UnwrapOSError ¶

func UnwrapOSError(err error) Errno

UnwrapOSError returns an Errno or zero if the input is nil.

func (Errno) Error ¶

func (e Errno) Error() string

Error implements error

func (Errno) Unwrap ¶

func (e Errno) Unwrap() error

Unwrap is a convenience for runtime.GOOS which define syscall.Errno.

Source Files ¶

errno.go error.go syscall_errno.go syscall_errno_notwindows.go