Hello,

dM points out (PR 6980), that our getpeername() uses int * as the parameter
addrlen, which is a potential security problem (depending on the copyout
implementation). getsockname does the same.

I did a quick check, and found:

- SUSV2 uses socklen_t *. Socklen_t is defined in sys/socket.h as an
  unsigned opaque integral type of length of at least 32 bits.

- some modern Unices (SunOS 5.6, Digital Unix 4) use size_t * instead.
- Historic Unices (Ultrix 4.3, SunOS 4) use int *.

I suggest to define and use socklen_t (typedef'd to size_t).
Comments?

Regards,
	-is

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