change recv, recvfrom, and recvmsg to return a ssize_t
change recv, recvfrom to take a size_t as a length

copyediting for Usenix manuals

4.4BSD snapshot (revision 8.1); add 1993 to copyright

EWOULDBLOCK -> EAGAIN (POSIX)

char *'s to void *'s (to match prototypes)

update: add current options and cross-reference

man page macro and text revisions (-mdoc version 3)

fix copyright and condition notice for new sccs include

access rights superceeded by control data; document csmghdr;
flags now value returned; discuss usual format of control data.

add Berkeley specific copyright notice

msg_accrights should be NULL if not used

change misleading array notation to pointers on *msg

clean up for 4.3

update, describe rights, add errnos

4.3BSD beta release manual page

manual page first distributed with 4.2BSD