/* Editor Settings: expandtabs and use 4 spaces for indentation
 * ex: set softtabstop=4 tabstop=8 expandtab shiftwidth=4: *
 * -*- mode: c, c-basic-offset: 4 -*- */

/*
 * Copyright Likewise Software
 * All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or (at
 * your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * for more details.  You should have received a copy of the GNU General
 * Public License along with this program.  If not, see 
 * <http://www.gnu.org/licenses/>.
 *
 * LIKEWISE SOFTWARE MAKES THIS SOFTWARE AVAILABLE UNDER OTHER LICENSING
 * TERMS AS WELL.  IF YOU HAVE ENTERED INTO A SEPARATE LICENSE AGREEMENT
 * WITH LIKEWISE SOFTWARE, THEN YOU MAY ELECT TO USE THE SOFTWARE UNDER THE
 * TERMS OF THAT SOFTWARE LICENSE AGREEMENT INSTEAD OF THE TERMS OF THE GNU
 * GENERAL PUBLIC LICENSE, NOTWITHSTANDING THE ABOVE NOTICE.  IF YOU
 * HAVE QUESTIONS, OR WISH TO REQUEST A COPY OF THE ALTERNATE LICENSING
 * TERMS OFFERED BY LIKEWISE SOFTWARE, PLEASE CONTACT LIKEWISE SOFTWARE AT
 * license@likewisesoftware.com
 */

#include "includes.h"

NTSTATUS
LwIoFuseRead(
    const char* pszPath,
    char* pData,
    size_t length,
    off_t offset,
    struct fuse_file_info* pFileInfo,
    int* pBytesRead
    )
{
    NTSTATUS status = STATUS_SUCCESS;
    IO_STATUS_BLOCK ioStatus = {0};
    IO_FILE_HANDLE handle = NULL;
    PIO_FUSE_CONTEXT pFuseContext = NULL;
    LONG64 llByteOffset = (LONG64) offset;

    pFuseContext = LwIoFuseGetContext();

    handle = FUSE_TO_NT_FH(pFileInfo->fh);

    status = LwNtReadFile(
        handle, /* File handle */
        NULL, /* Async control block */
        &ioStatus, /* IO status block */
        pData, /* Buffer */
        (ULONG) length, /* Buffer size */
        &llByteOffset, /* File offset */
        NULL); /* Key */
    BAIL_ON_NT_STATUS(status);
    
    *pBytesRead = (int) ioStatus.BytesTransferred;

cleanup:

    return status;

error:

    goto cleanup;
}