The qemuFirmwareGetSupported() function is called from qemu
driver to generate domain capabilities XML based on FW descriptor
files. However, the function currently reports only some features
from domcapabilities XML and not actual FW image paths. The paths
reported in the domcapabilities XML are still from pre-FW
descriptor era and therefore the XML might be a bit confusing.
For instance, it may say that secure boot is supported but
secboot enabled FW is not in the listed FW image paths.

To resolve this problem, change qemuFirmwareGetSupported() so
that it also returns a list of FW images (we have the list
anyway). Luckily, we already have a structure to represent a FW
image - virFirmware.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1733940Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>
Reviewed-by: NCole Robinson <crobinso@redhat.com>

The point of this API is to fetch all FW descriptors, parse them
and return list of supported interfaces and SMM feature for given
combination of machine type and guest architecture.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>
Acked-by: NLaszlo Ersek <lersek@redhat.com>

If qemuFirmwareFetchConfigs() returned more or fewer paths than
expected all that we see is the following error message:

  Expected 5 paths, got 7

While it is technically correct (the best kind of correct), we
can do better:

  Unexpected path (i=0). Expected /some/path got /some/other/path
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>
Reviewed-by: NAndrea Bolognani <abologna@redhat.com>

This is mostly to avoid a memleak that is not a true memleak
anyway - prefixes will be freed by kernel upon test exit.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>
Reviewed-by: NMartin Kletzander <mkletzan@redhat.com>
Reviewed-by: NErik Skultety <eskultet@redhat.com>

Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>
Reviewed-by: NDaniel P. Berrangé <berrange@redhat.com>

Test firmware description parsing so far.

The test files come from three locations:
1) ovmf-sb-keys.json and ovmf-sb.json come from OVMF
package from RHEL-7 (with slight name change to reflect their
features in filename too),

2) bios.json and aavmf.json come from example JSON documents from
firmware.json from qemu's git (3a0adfc9bf),

3) ovmf.json is then copied from ovmf-sb.json and stripped
of SECURE_BOOT and REQUIRES_SMM flags, OVMF path change,
description update and machine type expanded for both pc and q35
machine types.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>
Reviewed-by: NDaniel P. Berrangé <berrange@redhat.com>
Acked-by: NLaszlo Ersek <lersek@redhat.com>