sf_getpeername_func

Declaration

typedef int (*sf_getpeername_func)(void *cookie, socket_t so, struct sockaddr **sa);

Parameters

• cookie:

  Cookie value specified when the filter attach was called.

• so:

  The socket the filter is attached to.

• sa:

  A pointer to a socket address pointer.

Return Value

If you return a non-zero value, processing will stop. If you return EJUSTRETURN, no further filters will be called but a result of zero will be returned to the caller of getpeername.

Discussion

sf_getpeername_func is called to allow a filter to to intercept the getpeername function. When called, sa will point to a pointer to a socket address that was malloced in zone M_SONAME. If you want to replace this address, either modify the currenty copy or allocate a new one and free the old one.