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Exception: SystemCallError

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, ::StandardError, ::Exception
Instance Chain:
self, ::StandardError, ::Exception
Inherits: StandardError
Defined in: error.c,
error.c

Overview

SystemCallError is the base class for all low-level platform-dependent errors.

The errors available on the current platform are subclasses of SystemCallError and are defined in the ::Errno module.

File.open("does/not/exist")

raises the exception:

Errno::ENOENT: No such file or directory - does/not/exist

Class Method Summary

::Exception - Inherited

.exception

With no argument, or if the argument is the same as the receiver, return the receiver.
.new

Construct a new ::Exception object, optionally passing in a message.

Instance Method Summary

::Exception - Inherited

#==

Equality—If obj is not an ::Exception, returns false.
#backtrace

Returns any backtrace associated with the exception.
#backtrace_locations

Returns any backtrace associated with the exception.
#cause

Returns the previous exception ($!) at the time this exception was raised.
#exception

With no argument, or if the argument is the same as the receiver, return the receiver.
#inspect

Return this exception's class name and message.
#message

Returns the result of invoking exception.to_s.
#set_backtrace

Sets the backtrace information associated with exc.
#to_s

Returns exception's message (or the name of the exception if no message is set).

Constructor Details

.new(msg, errno) ⇒ system_call_error_subclass

If errno corresponds to a known system error code, constructs the appropriate ::Errno class for that error, otherwise constructs a generic SystemCallError object. The error number is subsequently available via the #errno method.

Class Method Details

.===(other) ⇒ Boolean

Return true if the receiver is a generic SystemCallError, or if the error numbers self and other are the same.

Instance Method Details

#errno ⇒ Fixnum

Return this SystemCallError's error number.