53 lines
1.1 KiB
Ruby
53 lines
1.1 KiB
Ruby
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require 'ffi'
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require 'mach/functions'
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module Mach
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class Error < StandardError
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class INVALID_ADDRESS < Error; end
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class PROTECTION_FAILURE < Error; end
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class NO_SPACE < Error; end
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class INVALID_ARGUMENT < Error; end
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class INVALID_NAME < Error; end
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class FAILURE < Error; end
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include Functions
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def self.new(msg, errno)
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klass = case errno
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when 1; then INVALID_ADDRESS
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when 2; then PROTECTION_FAILURE
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when 3; then NO_SPACE
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when 4; then INVALID_ARGUMENT
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when 5; then FAILURE
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when 15; then INVALID_NAME
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else FAILURE
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end
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e = klass.allocate
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e.send(:initialize, msg, errno)
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e
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end
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attr_reader :errno
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def initialize(msg, errno)
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super(msg)
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@errno = errno
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end
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def to_s
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"#{super}: #{error_string(errno)}"
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end
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protected
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# NOTE: api does not say this string must be freed; assuming it
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# does not
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def error_string(errno)
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ptr = mach_error_string(errno)
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ptr.null? ? nil : ptr.read_string()
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end
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end
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end
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