b55d6622d4
Complete the Supported, Start, and Stop member functions of EFI_DRIVER_BINDING_PROTOCOL sufficiently for exercising the UEFI driver model: - bind virtio-fs devices, - produce placeholder EFI_SIMPLE_FILE_SYSTEM_PROTOCOL instances on them. On the "TO_START" (= Virtio) side, the VirtioFsBindingSupported() function verifies the Virtio subsystem ID for the virtio-fs device (decimal 26 -- see <https://github.com/oasis-tcs/virtio-spec/blob/87fa6b5d8155/virtio-fs.tex>). Beyond that, no actual Virtio setup is performed for now. Those bits are going to be implemented later in this series. On the "BY_START" (= UEFI filesystem) side, the VirtioFsOpenVolume() function -- which is the sole EFI_SIMPLE_FILE_SYSTEM_PROTOCOL member function -- is a stub; it always returns EFI_NO_MEDIA, for now. The "CONNECT", "DISCONNECT", and "MAP -R" UEFI Shell commands can be used to test this patch. 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: <20201216211125.19496-4-lersek@redhat.com> Acked-by: Ard Biesheuvel <ard.biesheuvel@arm.com>
27 lines
557 B
C
27 lines
557 B
C
/** @file
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EFI_SIMPLE_FILE_SYSTEM_PROTOCOL.OpenVolume() member function for the Virtio
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Filesystem driver.
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Copyright (C) 2020, Red Hat, Inc.
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include "VirtioFsDxe.h"
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/**
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Open the root directory on the Virtio Filesystem.
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Refer to EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_OPEN_VOLUME for the interface
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contract.
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**/
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EFI_STATUS
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EFIAPI
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VirtioFsOpenVolume (
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IN EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *This,
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OUT EFI_FILE_PROTOCOL **Root
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)
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{
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return EFI_NO_MEDIA;
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}
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