second argument to readv is a const
make readv and writev return ssize_t's
change iov_len to be a size_t, not an int
4.4BSD snapshot (revision 8.1); add 1993 to copyright
EWOULDBLOCK -> EAGAIN (POSIX)
read and write take void *'s, iovec's contain void *'s
man page macro and text revisions (-mdoc version 3)
clean up for 4.3
nonblocking I/O, fcntl, select
lseek doesn't mind negative offsets, read & write do;bring write.2 up to read.2 stds.
update error messages (mostly from sun!guy)
improved english
4.3BSD beta release manual page
manual page distributed with 4.2BSD
manual page distributed with 4.1BSD