91 lines
3.1 KiB
Go
91 lines
3.1 KiB
Go
// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package os
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import syscall "syscall"
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// Errno is the Unix error number. Names such as EINVAL are simple
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// wrappers to convert the error number into an Error.
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type Errno int64
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func (e Errno) String() string { return syscall.Errstr(int(e)) }
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func (e Errno) Temporary() bool {
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return e == Errno(syscall.EINTR) || e.Timeout()
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}
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func (e Errno) Timeout() bool {
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return e == Errno(syscall.EAGAIN) || e == Errno(syscall.EWOULDBLOCK) || e == Errno(syscall.ETIMEDOUT)
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}
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// Commonly known Unix errors.
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var (
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EPERM Error = Errno(syscall.EPERM)
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ENOENT Error = Errno(syscall.ENOENT)
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ESRCH Error = Errno(syscall.ESRCH)
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EINTR Error = Errno(syscall.EINTR)
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EIO Error = Errno(syscall.EIO)
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ENXIO Error = Errno(syscall.ENXIO)
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E2BIG Error = Errno(syscall.E2BIG)
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ENOEXEC Error = Errno(syscall.ENOEXEC)
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EBADF Error = Errno(syscall.EBADF)
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ECHILD Error = Errno(syscall.ECHILD)
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EDEADLK Error = Errno(syscall.EDEADLK)
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ENOMEM Error = Errno(syscall.ENOMEM)
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EACCES Error = Errno(syscall.EACCES)
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EFAULT Error = Errno(syscall.EFAULT)
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EBUSY Error = Errno(syscall.EBUSY)
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EEXIST Error = Errno(syscall.EEXIST)
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EXDEV Error = Errno(syscall.EXDEV)
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ENODEV Error = Errno(syscall.ENODEV)
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ENOTDIR Error = Errno(syscall.ENOTDIR)
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EISDIR Error = Errno(syscall.EISDIR)
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EINVAL Error = Errno(syscall.EINVAL)
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ENFILE Error = Errno(syscall.ENFILE)
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EMFILE Error = Errno(syscall.EMFILE)
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ENOTTY Error = Errno(syscall.ENOTTY)
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EFBIG Error = Errno(syscall.EFBIG)
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ENOSPC Error = Errno(syscall.ENOSPC)
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ESPIPE Error = Errno(syscall.ESPIPE)
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EROFS Error = Errno(syscall.EROFS)
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EMLINK Error = Errno(syscall.EMLINK)
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EPIPE Error = Errno(syscall.EPIPE)
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EAGAIN Error = Errno(syscall.EAGAIN)
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EDOM Error = Errno(syscall.EDOM)
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ERANGE Error = Errno(syscall.ERANGE)
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EADDRINUSE Error = Errno(syscall.EADDRINUSE)
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ECONNREFUSED Error = Errno(syscall.ECONNREFUSED)
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ENAMETOOLONG Error = Errno(syscall.ENAMETOOLONG)
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EAFNOSUPPORT Error = Errno(syscall.EAFNOSUPPORT)
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ETIMEDOUT Error = Errno(syscall.ETIMEDOUT)
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ENOTCONN Error = Errno(syscall.ENOTCONN)
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)
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// SyscallError records an error from a specific system call.
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type SyscallError struct {
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Syscall string
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Errno Errno
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}
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func (e *SyscallError) String() string { return e.Syscall + ": " + e.Errno.String() }
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// Note: If the name of the function NewSyscallError changes,
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// pkg/go/doc/doc.go should be adjusted since it hardwires
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// this name in a heuristic.
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// NewSyscallError returns, as an Error, a new SyscallError
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// with the given system call name and error details.
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// As a convenience, if errno is 0, NewSyscallError returns nil.
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func NewSyscallError(syscall string, errno int) Error {
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if errno == 0 {
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return nil
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}
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return &SyscallError{syscall, Errno(errno)}
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}
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func iserror(errno int) bool {
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return errno != 0
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}
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