Fix cleaning criteria so that we clean soon enough on very
tiny partitions.

Check summary magic numbers and print them out.

Add more statistics gathering in cleaner. Also, provide
alternative cleaning parameters such as cleaning by number of active
bytes instead of number of segments per invocation.

Make changes so that the cleaner supports fragments.

MOUNT types become names

the Sparc isn't handling structures passed to the kernel correctly
change LFS routines that take fsid_t's to take fsid_t *'s.

copyediting for Usenix manuals

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

4.4BSD snapshot (revision 8.1)

add a man page from Chris Demetrios

date and time created 93/06/05 13:50:17 by bostic

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

if -d flag is not given, become a system daemon w/daemon()

if statfs fails when rereading, exit; fs is unmounted

have error function only print errno if it's nonzero

require an argument for hfs_cleanerd which specifies fs to clean.

require an argument for hfs_cleanerd which specifies fs to clean.

unsigned subtraction is never less than 0; bad assignment statements

lint, bcopy -> memmove

getloadavg(3) moves to libc, lfs_cleanerd no longer needs libutil or libkvm

Pass flag around to indicate use of mmap instead of read.

Add statistics, add flags to allow caller to specify use of mmap.
catch signals to report errors.

Pass flag argument to get_fs_info, mmap_segment, munmap_segment, and
reread_fs_info to indicate use of mmap or not.

Add more information on printf when cleaner runs.

Verify that segment doesn't exceed maximum size.