r361710: stand/uboot: fix setting of gateip.s_addr
Missplaced paren.

r361933: loader: install allow for more complete device spec in url

Rework to simplify and impose sane url syntax.
That is we allow for file://[devname[:fstype]]/package

r362127: verify_pcr_export: bump kenv_mvallen if needed
r362231: make KENV_MVALLEN tunable

When doing secure boot, loader wants to export loader.ve.hashed
the value of which typically exceeds KENV_MVALLEN.

Replace use of KENV_MVALLEN with tunable kenv_mvallen.

Add getenv_string_buffer() for the case where a stack buffer cannot be
created and use uma_zone_t kenv_zone for suitably sized buffers.

r364443: veloader: insist on verifying .4th .lua etc

When files are read from .rc or .4th, verify_file is asked to
guess the severity (VE_TRY,VE_WANT,VE_MUST)

Reviewed by:	imp, stevek, kevans

On slow platforms, it helps to spread the hashing load
over time so that tftp does not timeout.

Also, some .4th files are too big to fit in cache of pkgfs,
so increase cache size and ensure fully populated.

MFC of r359700

Reviewed by:	stevek
Differential Revision: https://reviews.freebsd.org/D24287

The vectx API, computes the hash for verifying a file as it is read.
This avoids the overhead of reading files twice - once to verify, then
again to load.

For doing an install via loader, avoiding the need to rewind
large files is critical.

This API is only used for modules, kernel and mdimage as these are the
biggest files read by the loader.
The reduction in boot time depends on how expensive the I/O is
on any given platform.  On a fast VM we see 6% improvement.

For install via loader the first file to be verified is likely to be the
kernel, so some of the prep work (finding manifest etc) done by
verify_file() needs to be factored so it can be reused for
vectx_open().

For missing or unrecognized fingerprint entries, we fail
in vectx_open() unless verifying is disabled.

Otherwise fingerprint check happens in vectx_close() and
since this API is only used for files which must be verified
(VE_MUST) we panic if we get an incorrect hash.

Fix pkgfs stat so it satisfies libsecureboot

We need a valid st_dev, st_ino and st_mtime
to correctly track which files have been verified
and to update our notion of time.

ve_utc_set(): ignore utc if it would jump our current time
by more than VE_UTC_MAX_JUMP (20 years).

Allow testing of install command via userboot.
Need to fix its stat implementation too.

bhyveload also needs stat fixed - due to change to userboot.h

Call ve_error_get() from vectx_close() when hash is wrong.

Track the names of files we have hashed into pcr

For the purposes of measured boot, it is important
to be able to reproduce the hash reflected in
loader.ve.pcr
so loader.ve.hashed provides a list of names in the order they
were added.

Avoid unused vars when VE_ECDSA_HASH_AGAIN undefined

MFC of r358744 r358767 r359307 r355962

Reviewed by:	imp,tsoome,emaste
Sponsored by:	Juniper Networks
Differential Revision:	https://reviews.freebsd.org//D23827 https://reviews.freebsd.org//D24027

Leaf directories that have dependencies impacted
by options need a Makefile.depend.options file
to avoid churn in Makefile.depend

DIRDEPS for cases such as OPENSSL, TCP_WRAPPERS etc
can be set in local.dirdeps-options.mk
which can add to those set in Makefile.depend.options

See share/mk/dirdeps-options.mk

Also update affected Makefile.depend files.

MFC of r355616 and r355617

Reviewed by:	 bdrewery
Sponsored by:   Juniper Networks
Differential Revision:  https://reviews.freebsd.org/D22469

For EFI at least, we can seed the environment
with VE_VERBOSE etc.

MFC of r354038

Reviewed by:	stevek imp
Sponsored by:	Juniper Networks
Differential Revision:  https://reviews.freebsd.org/D22135

Since we can now add OpenPGP trust anchors at runtime,
ensure the latent support is available.

Ensure we do not add duplicate keys to trust store.

Also allow reporting names of trust anchors added/revoked

We only do this for loader and only after initializing trust store.
Thus only changes to initial trust store will be logged.

MFC of r349446

Reviewed by:    stevek
Differential Revision:  https://reviews.freebsd.org/D20700

The data returned by dearmor is referenced by the key
leave it alone!

MFC r347980

Reviewed by:	stevek

During boot we only want to measure things which *must*
be verified - this should provide more deterministic ordering.

MFC r347981

Reviewed by:	stevek
Sponsored by:	Juniper Networks
Differential Revision:	https://reviews.freebsd.org/D20297

Avoid making hash self-tests depend on X.509 certs.
Include OpenPGP keys in trust store count.

MFC of r347408

Reviewed by:	stevek
Sponsored by:	Juniper Networks
Differential Revision:	https://reviews.freebsd.org/D20208

sbin/veriexec will ignore entries that have no hash anyway,
but loader needs to be explicitly told that such files are
ok to ignore (not verify).

We will report as Unverified depending on verbose level,
but with no reason - because we are not rejecting the file.

MFC r346604