no longer need to include time.h, vnode.h, and inode.h; just include dinode.h

POSIX signals

get rid of redundant status check (from Torek)

new include file locations engendered by vnodes

check one filesystem per disk until done, ignoring pass numbers > 1

check for exit caused by uncaught signal

add -m flag to override default creation mode for lost+found

in preen mode, summarize file systems that must be checked manually

add -c flag (convert dynamic cylinder group format back to static format)

update disk labels to ioctl's; check the file the user specified!;
don't try to check "." if a named file doesn't exist;
don't check spare constants in superblock against alternate;
make the "TRASHED

update disk labels to ioctl's; check the file the user specified!;
don't try to check "." if a named file doesn't exist;
don't check spare constants in superblock against alternate;
make the "TRASHED VALUES" message understandable

show more ...

verify that we are checking the root file system (from conrad@cgl.ucsf.edu)
bug report 4.3BSD/etc/20

free dup list and zero link count entries as they are used
reinitialize dup list head and zero link count head to empty after each fs check

add fragmentation statistics

allow a single sigquit to force exit(2) after completing checks
if preening

Add copyright

when debug is set, list remaining duplicate blocks

dynamically allocate the duplicate block table

merge passes 5 and 6 into a single pass

code reorganization and cleanup

break up into managable pieces

overwrite ".." if first entry, "." if second entry in directory

must apply beginning of directory check at each resync point (Tom Lyons)

arbitrarily cut off searching around orphaned directory loops

lint; ask about all possible directory fixes instead of just once per directory

give more complete information about pathnames while linking up files