class Errno

• Errno
• Exception
• Reference
• Object

Overview

Errno wraps and gives access to libc's errno. This is mostly useful when dealing with C libraries.

This class is the exception thrown when errno errors are encountered.

Defined in:

Constant Summary

E2BIG = LibC::E2BIG

Argument list too long

EACCES = LibC::EACCES

Permission denied

EADDRINUSE = LibC::EADDRINUSE

Address already in use

EADDRNOTAVAIL = LibC::EADDRNOTAVAIL

Can't assign requested address

EAFNOSUPPORT = LibC::EAFNOSUPPORT

Address family not supported by protocol family

EAGAIN = LibC::EAGAIN

Resource temporarily unavailable

EALREADY = LibC::EALREADY

Operation already in progress

EBADF = LibC::EBADF

Bad file descriptor

EBADMSG = LibC::EBADMSG

Bad message

EBUSY = LibC::EBUSY

Device / Resource busy

ECANCELED = LibC::ECANCELED

Operation canceled

ECHILD = LibC::ECHILD

No child processes

ECONNABORTED = LibC::ECONNABORTED

Software caused connection abort

ECONNREFUSED = LibC::ECONNREFUSED

Connection refused

ECONNRESET = LibC::ECONNRESET

Connection reset by peer

EDEADLK = LibC::EDEADLK

Resource deadlock avoided

EDESTADDRREQ = LibC::EDESTADDRREQ

Destination address required

EDOM = LibC::EDOM

Numerical argument out of domain

EDQUOT = LibC::EDQUOT

Disc quota exceeded

EEXIST = LibC::EEXIST

File exists

EFAULT = LibC::EFAULT

Bad address

EFBIG = LibC::EFBIG

File too large

EHOSTDOWN = LibC::EHOSTDOWN

Host is down

EHOSTUNREACH = LibC::EHOSTUNREACH

No route to host

EIDRM = LibC::EIDRM

Identifier removed

EILSEQ = LibC::EILSEQ

Illegal byte sequence

EINPROGRESS = LibC::EINPROGRESS

Operation now in progress

EINTR = LibC::EINTR

Interrupted system call

EINVAL = LibC::EINVAL

Invalid argument

EIO = LibC::EIO

Input/output error

EISCONN = LibC::EISCONN

Socket is already connected

EISDIR = LibC::EISDIR

Is a directory

ELOOP = LibC::ELOOP

Too many levels of symbolic links

EMFILE = LibC::EMFILE

Too many open files

EMLINK = LibC::EMLINK

Too many links

EMSGSIZE = LibC::EMSGSIZE

Message too long

EMULTIHOP = LibC::EMULTIHOP

Reserved

ENAMETOOLONG = LibC::ENAMETOOLONG

File name too long

ENETDOWN = LibC::ENETDOWN

Network is down

ENETRESET = LibC::ENETRESET

Network dropped connection on reset

ENETUNREACH = LibC::ENETUNREACH

Network is unreachable

ENFILE = LibC::ENFILE

Too many open files in system

ENOBUFS = LibC::ENOBUFS

No buffer space available

ENODATA = LibC::ENODATA

No message available on STREAM

ENODEV = LibC::ENODEV

Operation not supported by device

ENOENT = LibC::ENOENT

No such file or directory

ENOEXEC = LibC::ENOEXEC

Exec format error

ENOLCK = LibC::ENOLCK

No locks available

ENOLINK = LibC::ENOLINK

Reserved

ENOMEM = LibC::ENOMEM

Cannot allocate memory

ENOMSG = LibC::ENOMSG

No message of desired type

ENOPROTOOPT = LibC::ENOPROTOOPT

Protocol not available

ENOSPC = LibC::ENOSPC

No space left on device

ENOSR = LibC::ENOSR

No STREAM resources

ENOSTR = LibC::ENOSTR

Not a STREAM

ENOSYS = LibC::ENOSYS

Function not implemented

ENOTBLK = LibC::ENOTBLK

Block device required

ENOTCONN = LibC::ENOTCONN

Socket is not connected

ENOTDIR = LibC::ENOTDIR

Not a directory

ENOTEMPTY = LibC::ENOTEMPTY

Directory not empty

ENOTRECOVERABLE = LibC::ENOTRECOVERABLE

State not recoverable

ENOTSOCK = LibC::ENOTSOCK

Socket operation on non-socket

ENOTTY = LibC::ENOTTY

Inappropriate ioctl for device

ENXIO = LibC::ENXIO

Device not configured

EOPNOTSUPP = LibC::EOPNOTSUPP

Operation not supported on socket

EOVERFLOW = LibC::EOVERFLOW

Value too large to be stored in data type

EOWNERDEAD = LibC::EOWNERDEAD

Previous owner died

EPERM = LibC::EPERM

Operation not permitted

EPFNOSUPPORT = LibC::EPFNOSUPPORT

Protocol family not supported

EPIPE = LibC::EPIPE

Broken pipe

EPROTO = LibC::EPROTO

Protocol error

EPROTONOSUPPORT = LibC::EPROTONOSUPPORT

Protocol not supported

EPROTOTYPE = LibC::EPROTOTYPE

Protocol wrong type for socket

ERANGE = LibC::ERANGE

Result too large

EREMOTE = LibC::EREMOTE

Too many levels of remote in path

EROFS = LibC::EROFS

Read-only file system

ESHUTDOWN = LibC::ESHUTDOWN

Can't send after socket shutdown

ESOCKTNOSUPPORT = LibC::ESOCKTNOSUPPORT

Socket type not supported

ESPIPE = LibC::ESPIPE

Illegal seek

ESRCH = LibC::ESRCH

No such process

ESTALE = LibC::ESTALE

Stale NFS file handle

ETIME = LibC::ETIME

STREAM ioctl timeout

ETIMEDOUT = LibC::ETIMEDOUT

Operation timed out

ETOOMANYREFS = LibC::ETOOMANYREFS

Too many references: can't splice

ETXTBSY = LibC::ETXTBSY

Text file busy

EUSERS = LibC::EUSERS

Too many users

EWOULDBLOCK = LibC::EWOULDBLOCK

Operation would block

EXDEV = LibC::EXDEV

Cross-device link

Constructors

• .new(message, errno = Errno.value)

  Creates a new Errno with the given message.

Class Method Summary

• .value : LibC::Int

  Returns the value of libc's errno.

• .value=(value)

  Sets the value of libc's errno.

Instance Method Summary

• #errno : Int32

  Returns the numeric value of errno.

• #errno_message : String

  Returns the message of errno.

Constructor Detail

err = LibC.some_call
if err == -1
  raise Errno.new("some_call")
end

Class Method Detail

Instance Method Detail