FuseWrite.c File Reference

#include "VirtioFsDxe.h"

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Functions
EFI_STATUS	VirtioFsFuseWrite (IN OUT VIRTIO_FS *VirtioFs, IN UINT64 NodeId, IN UINT64 FuseHandle, IN UINT64 Offset, IN OUT UINT32 *Size, IN VOID *Data)

Detailed Description

FUSE_WRITE wrapper for the Virtio Filesystem device.

Copyright (C) 2020, Red Hat, Inc.

SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file FuseWrite.c.

Function Documentation

VirtioFsFuseWrite()

EFI_STATUS VirtioFsFuseWrite	(	IN OUT VIRTIO_FS *	VirtioFs,
		IN UINT64	NodeId,
		IN UINT64	FuseHandle,
		IN UINT64	Offset,
		IN OUT UINT32 *	Size,
		IN VOID *	Data
	)

Write a chunk to a regular file, by sending the FUSE_WRITE request to the Virtio Filesystem device.

The function may only be called after VirtioFsFuseInitSession() returns successfully and before VirtioFsUninit() is called.

Parameters

[in,out]	VirtioFs	The Virtio Filesystem device to send the FUSE_WRITE request to. On output, the FUSE request counter "VirtioFs->RequestId" will have been incremented.
[in]	NodeId	The inode number of the regular file to write to.
[in]	FuseHandle	The open handle to the regular file to write to.
[in]	Offset	The absolute file position at which to start writing.
[in,out]	Size	On input, the number of bytes to write. On successful return, the number of bytes actually written, which may be smaller than the value on input.
[in]	Data	The buffer to write to the regular file.

Return values

EFI_SUCCESS	Write successful. The caller is responsible for checking Size to learn the actual byte count transferred.
EFI_BAD_BUFFER_SIZE	On input, Size is larger than "VirtioFs->MaxWrite".

Returns

The "errno" value mapped to an EFI_STATUS code, if the Virtio Filesystem device explicitly reported an error.

Error codes propagated from VirtioFsSgListsValidate(), VirtioFsFuseNewRequest(), VirtioFsSgListsSubmit(), VirtioFsFuseCheckResponse().

Definition at line 54 of file FuseWrite.c.