Remove workaround for ancient HTML generation code.

orrect the text for fileassoc_table_run() - it takes two parameters.

Merge changes from David H. Gutteridge in PR misc/51611

Thanks!

branches: 1.27.4; 1.27.8; 1.27.10;
Merge riastradh-drm2 to HEAD.

Use Mt for email addresses.

branches: 1.25.8; 1.25.14; 1.25.18;
Bump date for reorg.

Capitalize one more title. Use a complete sentence in CODE REFERENCES.

Move the complete prototypes to the SYNOPSIS. Also capitalize the titles.

Escape "\" as "\e" in the example.
Fix formatting problems reported by Stathis Kamperis on PR bin/39535.

Fix a spelling error.

branches: 1.20.10; 1.20.12; 1.20.14;
Some Veriexec stuff that's been rotting in my tree for months.

Bug fixes:
- Fix crash reported by Scott Ellis on current-users@.

- Fix race conditions in enforcing the Veriexec rename and remove
policies. These are NOT security issues.

- Fix memory leak in rename handling when overwriting a monitored
file.

- Fix table deletion logic.

- Don't prevent query requests if not in learning mode.


KPI updates:
- fileassoc_table_run() now takes a cookie to pass to the callback.

- veriexec_table_add() was removed, it is now done internally. As a
result, there's no longer a need for VERIEXEC_TABLESIZE.

- veriexec_report() was removed, it is now internal.

- Perform sanity checks on the entry type, and enforce default type
in veriexec_file_add() rather than in veriexecctl.

- Add veriexec_flush(), used to delete all Veriexec tables, and
veriexec_dump(), used to fill an array with all Veriexec entries.


New features:
- Add a '-k' flag to veriexecctl, to keep the filenames in the kernel
database. This allows Veriexec to produce slightly more accurate
logs under certain circumstances. In the future, this can be either
replaced by vnode->pathname translation, or combined with it.

- Add a VERIEXEC_DUMP ioctl, to dump the entire Veriexec database.
This can be used to recover a database if the file was lost.
Example usage:

# veriexecctl dump > /etc/signatures

Note that only entries with the filename kept (that is, were loaded
with the '-k' flag) will be dumped.

Idea from Brett Lymn.

- Add a VERIEXEC_FLUSH ioctl, to delete all Veriexec entries. Sample
usage:

# veriexecctl flush

- Add a 'veriexec_flags' rc(8) variable, and make its default have
the '-k' flag. On systems using the default signatures file
(generaetd from running 'veriexecgen' with no arguments), this will
use additional 32kb of kernel memory on average.

- Add a '-e' flag to veriexecctl, to evaluate the fingerprint during
load. This is done automatically for files marked as 'untrusted'.


Misc. stuff:
- The code for veriexecctl was massively simplified as a result of
eliminating the need for VERIEXEC_TABLESIZE, and now uses a single
pass of the signatures file, making the loading somewhat faster.

- Lots of minor fixes found using the (still under development)
Veriexec regression testsuite.

- Some of the messages Veriexec prints were improved.

- Various documentation fixes.


All relevant man-pages were updated to reflect the above changes.

Binary compatibility with existing veriexecctl binaries is maintained.

PR/35253: YAMAMOTO Takashi: fileassoc hash size problem

fileassoc_table_add() was removed from the KPI and made internal. From now
fileassoc(9) will manage the optimal table size internally.

Input from and okay yamt@.

Remove advertising clause from all of my stuff.

Use HTML escapes.

remove the fileassoc "tabledata" functionality.

update an example.

FILEASSOC_NHOOKS has gone.

it's fileassoc, not verifiedexec.

sync with the implementation.

Bump date for previous.

minor fixes and cleanup, reviewed by elad

* Remove "hinted" interface
* Modify fileassoc internals to use fhandle_t instead of fileid

Add functions to the fileassoc interface to allow a "hint" to be provided
instead of performing an implicit VOP_GETATTR() when adding/looking up
fileassoc entries.

Pretending to be Elad's keyboard:

fileassoc.diff adds a fileassoc_table_run() routine that allows you to
pass a callback to be called with every entry on a given mount.

veriexec.diff adds some raw device access policies: if raw disk is
opened at strict level 1, all fingerprints on this disk will be
invalidated as a safety measure. level 2 will not allow opening disk
for raw writing if we monitor it, and prevent raw writes to memory.
level 3 will not allow opening any disk for raw writing.

both update all relevant documentation.

veriexec concept is okay blymn@.

branches: 1.6.2;
Use standard section headers. Make HTML-ready.

add caveats section mentioning that kpi routines can result in a call to
VOP_GETATTR() and note this should be considered when using the interface.
also say this limitation is planned on being removed.

expose less api; prompted by yamt@.

sync examples with reality.. oops.

Use Dv for defined values. Update history, this KPI appeared in 4.0.
Some other minor fixes.

okay, since there was no way to divide this to two commits, here it goes..

introduce fileassoc(9), a kernel interface for associating meta-data with
files using in-kernel memory. this is very similar to what we had in
veriexec till now, only abstracted so it can be used more easily by more
consumers.

this also prompted the redesign of the interface, making it work on vnodes
and mounts and not directly on devices and inodes. internally, we still
use file-id but that's gonna change soon... the interface will remain
consistent.

as a result, veriexec went under some heavy changes to conform to the new
interface. since we no longer use device numbers to identify file-systems,
the veriexec sysctl stuff changed too: kern.veriexec.count.dev_N is now
kern.veriexec.tableN.* where 'N' is NOT the device number but rather a
way to distinguish several mounts.

also worth noting is the plugging of unmount/delete operations
wrt/fileassoc and veriexec.

tons of input from yamt@, wrstuden@, martin@, and christos@.