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- If the lost+found directory is created by fsck, it will do a cacheino()
which sets the inoinfo's i_parent and i_dotdot to 0, but they never get
set to ROOTINO. This means that propagate will never find lost+found and
its descendents, subdirectories will remain DSTATE (instead of DFOUND)
even though they are correctly linked in, and pass4.c will try to
clear them unsuccessfully, thinking that there is no link count from the
DSTATE directory's parent. The result is that you need to run fsck twice
and get "EXTRANEOUS HARD LINK TO DIRECTORY" error (which are unexpected
and fatal when running in preen mode). The fix is to set i_parent and
i_dotdot to "parent" after the second cacheino() call in dir.c:allocdir().
From NetBSD via FreeBSD.
- modify propagate() so it be able to start from any point in the tree.
- minor tweaks to get more generality in state propagation.
In other words fsck doesn't leave unremovable directories anymore.
costa@ ok.
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