70 lines
1.6 KiB
Ruby
70 lines
1.6 KiB
Ruby
# frozen_string_literal: true
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module BSD::Capsicum
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module FFI
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require "fiddle"
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include Fiddle::Types
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include Constants
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module_function
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##
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# Provides a Ruby interface for cap_enter(2)
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# @return [Integer]
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def cap_enter
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Fiddle::Function.new(
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libc["cap_enter"],
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[],
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INT
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).call
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end
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##
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# Provides a Ruby interface for cap_getmode(2)
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# @param [Fiddle::Pointer] uintp
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# @return [Integer]
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def cap_getmode(uintp)
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Fiddle::Function.new(
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libc["cap_getmode"],
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[INTPTR_T],
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INT
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).call(uintp)
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end
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##
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# Provides a Ruby interface for cap_rights_limit(2)
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# @param [Integer] fd
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# @param [Fiddle::Pointer] rights
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# @return [Integer]
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def cap_rights_limit(fd, rights)
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Fiddle::Function.new(
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libc["cap_rights_limit"],
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[INT, VOIDP],
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INT
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).call(fd, rights)
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end
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##
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# Provides a Ruby interface for cap_rights_init(2)
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# @param [Array<Integer>] rights
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# @return [Fiddle::Pointer]
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# Returns a pointer to the structure `cap_rights_t`
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def cap_rights_init(*rights)
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voidp = Fiddle::Pointer.malloc(Fiddle::SIZEOF_VOIDP)
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varargs = rights.flat_map { [ULONG_LONG, (Symbol === _1) ? Constants.const_get(_1) : _1] }
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Fiddle::Function.new(
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libc["__cap_rights_init"],
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[INT, VOIDP, VARIADIC],
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VOIDP
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).call(CAP_RIGHTS_VERSION, voidp, *varargs)
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voidp
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end
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##
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# @api private
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def libc
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@libc ||= Fiddle.dlopen Dir["/lib/libc.*"].first
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end
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end
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private_constant :FFI
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end
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