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bug in the speculative-unlink operation.
The intent is to mark and then confirm or cancel the delete. This
removes the quirk where we tried to stash old database entries,
which didn't handle directories anyway; "rmdir non-empty-directory"
is a bit too common a case to dismiss as unthinkable.
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If multiple clients are active at once, the following could occur:
* Client #1 unlinks file A
* Client #2 creates file B, which reuses A's inode
* Client #2 sends request to server
* Client #1 sends request to server
* Processing client #2's request creates a mismatch warning for
file A/B.
* Processing client #1's request creates a mismatch warning too.
Note that this can happen even if Client #2 sends its request later,
as there's no intrinsic guarantee of the order in which requests
are processed; any SINGLE client is presumably executing operations
in order, but multiple clients aren't.
Fixing this in rmdir, unlink, and rename.
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Corporate policy is that each module should have a copyright notice.
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This patch adds support for checking whether a file was opened for
reading, writing, or both, as well as tracking append flags. It is
not very well tested. This is preparation for improved host
contamination checking.
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* Improve makewrappers handling of function pointer arguments.
* Regenerate wrappers when makewrappers is touched.
* Move path resolution from pseudo_client_op into wrapper
functions.
* Eliminate dependency on PATH_MAX.
* Related cleanup, such as tracking CWD better, and using
the tracked value for getcwd().
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seebs
Peter Seebach