Sha256: 02dd7e811307dad67aba8093544bd73b2798c245cae784c5fad90dbf608ba2cd
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Versions: 51
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Stored size: 1.07 KB
Contents
# frozen_string_literal: true
require 'ffi'
module Facter
module Bsd
module FfiHelper
module Libc
extend FFI::Library
ffi_lib 'c'
attach_function :sysctl, %i[pointer uint pointer pointer pointer size_t], :int
end
def self.sysctl(type, oids)
name = FFI::MemoryPointer.new(:uint, oids.size)
name.write_array_of_uint(oids)
namelen = oids.size
oldp = FFI::Pointer::NULL
oldlenp = FFI::MemoryPointer.new(:size_t)
newp = FFI::Pointer::NULL
newlen = 0
if type == :string
res = Libc.sysctl(name, namelen, oldp, oldlenp, newp, newlen)
return nil if res.negative?
else
oldlenp.write(:size_t, FFI.type_size(type))
end
oldp = FFI::MemoryPointer.new(:uint8_t, oldlenp.read(:size_t))
res = Libc.sysctl(name, namelen, oldp, oldlenp, newp, newlen)
return nil if res.negative?
case type
when :string
oldp.read_string
else
oldp.read(type)
end
end
end
end
end
Version data entries
51 entries across 51 versions & 1 rubygems