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OvmfPkg/VirtioFsDxe: introduce the basic FUSE request/response headers

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Introduce the VIRTIO_FS_FUSE_REQUEST and VIRTIO_FS_FUSE_RESPONSE
structures, which are the common headers for the various FUSE
request/response structures.

Introduce the VirtioFsFuseNewRequest() helper function for populating
VIRTIO_FS_FUSE_REQUEST, from parameters and from a VIRTIO_FS-level request
counter.

Introduce the VirtioFsFuseCheckResponse() helper function for verifying
most FUSE response types that begin with the VIRTIO_FS_FUSE_RESPONSE
header.

Cc: Ard Biesheuvel <ard.biesheuvel@arm.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Philippe Mathieu-Daudé <philmd@redhat.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=3097
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20201216211125.19496-7-lersek@redhat.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@arm.com>
This commit is contained in:
Laszlo Ersek
2020-12-16 22:10:43 +01:00
committed by mergify[bot]
parent 6578cacb46
commit 6a2dc768f0
4 changed files with 287 additions and 0 deletions
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5
OvmfPkg/VirtioFsDxe/DriverBinding.c
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@@ -84,6 +84,11 @@ VirtioFsBindingStart (
goto CloseVirtio;
}
//
// Initialize the FUSE request counter.
//
VirtioFs->RequestId = 1;
Status = gBS->CreateEvent (EVT_SIGNAL_EXIT_BOOT_SERVICES, TPL_CALLBACK,
VirtioFsExitBoot, VirtioFs, &VirtioFs->ExitBoot);
if (EFI_ERROR (Status)) {