93 lines
3.1 KiB
Go
93 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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// +build darwin freebsd linux openbsd windows
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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) Error() 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 == Errno(syscall.EMFILE) || 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) Error() string { return e.Syscall + ": " + e.Errno.Error() }
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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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