Passes usertests and stressfs
Seems to recover correctly in a number of simple cases

fix race in mknod / creat
use last component in dirent in mknod, not path

nit in sbrk
indirect block
fix dup to share fd struct

fix acquire() to cli() *before* incrementing nlock
make T_SYSCALL a trap gate, not an interrupt gate
sadly, various crashes if you hold down a keyboard key...

O_RDWR, etc.
create file

balloc

iget
mkfs makes a file system image
put this in your .bochsrc:
ata0-slave: type=disk, mode=flat, path="fs.img", cylinders=1024, heads=1, spt=1