{get,set}hostname and getpagesize move in from sys

date and time created 93/04/04 13:58:57 by mckusick

date and time created 93/04/04 13:51:40 by mckusick

move from sys to gen

update for move to compat-43

date and time created 93/04/04 13:47:33 by mckusick

{get,set}hostid moves in from sys

{get,set}hostid goes to compat-43; getkerninfo goes away;
{get,set}hostname and getpagesize go to gen

convert from kinfo to sysctl

convert from getkerninfo to sysctl

mips doesn't use '_' in labels. Strip if present.

add in err(3) links

get file descriptor close logic right

Jeff Forys' changes to keep from leaving two slashes in the pathname
GNU Emacs doesn't like this

fix bug in using v0 before the value is ready (load delay slot).

initialize uninitialized fields in btopeninfo. minor speedup, don't
check for cases which are the same as default:

shut gcc2 up

shut gcc2 up

update

guarantee that bt_rfd gets set; pipes are read-only (check for einval)
don't read the file if the size is 0; return the right errno
clean up mmap and file pointer uses in recno interface

add BTF_EOF flag, test it instead of bt_reof
clean up mmap and file pointer uses in recno interface

add BTF_EOF to test instead of bt_reof
clean up mmap and file pointer uses in recno interface

use munmap to free up the mapped memory
lseek wasn't testing for error correctly before truncate call
clean up mmap and file pointer uses in recno interface

add BTF_EOF flag to test instead of bt_reof int
clean up mmap and file pointer uses in recno interface

clean up mmap and file pointer uses in recno interface