/* Editor Settings: expandtabs and use 4 spaces for indentation
 * ex: set softtabstop=4 tabstop=8 expandtab shiftwidth=4: *
 */

/*
 * Copyright Likewise Software    2004-2008
 * 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
 */

/*
 * Copyright (C) Likewise Software. All rights reserved.
 *
 * Module Name:
 *
 *        ipc_protocol.c
 *
 * Abstract:
 *
 *        Likewise Security and Authentication Subsystem (LSASS)
 *
 *
 *
 * Authors: Krishna Ganugapati (krishnag@likewisesoftware.com)
 *          Sriram Nambakam (snambakam@likewisesoftware.com)
 *          Wei Fu (wfu@likewisesoftware.com)
 *
 */

#include "includes.h"

static LWMsgTypeSpec gShareInfo0Spec[] =
{
    LWMSG_STRUCT_BEGIN(SHARE_INFO_0),
    LWMSG_MEMBER_PWSTR(SHARE_INFO_0, shi0_netname),
    LWMSG_STRUCT_END,
    LWMSG_TYPE_END
};


static LWMsgTypeSpec gShareInfo1Spec[] =
{
    LWMSG_STRUCT_BEGIN(SHARE_INFO_1),
    LWMSG_MEMBER_PWSTR(SHARE_INFO_1, shi1_netname),
    LWMSG_MEMBER_UINT32(SHARE_INFO_1, shi1_type),
    LWMSG_MEMBER_PWSTR(SHARE_INFO_1, shi1_remark),
    LWMSG_STRUCT_END,
    LWMSG_TYPE_END
};


static LWMsgTypeSpec gShareInfo2Spec[] =
{
    LWMSG_STRUCT_BEGIN(SHARE_INFO_2),
    LWMSG_MEMBER_PWSTR(SHARE_INFO_2, shi2_netname),
    LWMSG_MEMBER_UINT32(SHARE_INFO_2, shi2_type),
    LWMSG_MEMBER_PWSTR(SHARE_INFO_2, shi2_remark),
    LWMSG_MEMBER_UINT32(SHARE_INFO_2, shi2_permissions),
    LWMSG_MEMBER_UINT32(SHARE_INFO_2, shi2_max_uses),
    LWMSG_MEMBER_UINT32(SHARE_INFO_2, shi2_current_uses),
    LWMSG_MEMBER_PWSTR(SHARE_INFO_2, shi2_path),
    LWMSG_MEMBER_PWSTR(SHARE_INFO_2, shi2_password),
    LWMSG_STRUCT_END,
    LWMSG_TYPE_END
};


static LWMsgTypeSpec gShareInfo501Spec[] =
{
    LWMSG_STRUCT_BEGIN(SHARE_INFO_501),
    LWMSG_MEMBER_PWSTR(SHARE_INFO_501, shi501_netname),
    LWMSG_MEMBER_UINT32(SHARE_INFO_501, shi501_type),
    LWMSG_MEMBER_PWSTR(SHARE_INFO_501, shi501_remark),
    LWMSG_MEMBER_UINT32(SHARE_INFO_501, shi501_flags),
    LWMSG_STRUCT_END,
    LWMSG_TYPE_END
};


static LWMsgTypeSpec gShareInfo502Spec[] =
{
    LWMSG_STRUCT_BEGIN(SHARE_INFO_502),
    LWMSG_MEMBER_PWSTR(SHARE_INFO_502, shi502_netname),
    LWMSG_MEMBER_UINT32(SHARE_INFO_502, shi502_type),
    LWMSG_MEMBER_PWSTR(SHARE_INFO_502, shi502_remark),
    LWMSG_MEMBER_UINT32(SHARE_INFO_502, shi502_permissions),
    LWMSG_MEMBER_UINT32(SHARE_INFO_502, shi502_max_uses),
    LWMSG_MEMBER_UINT32(SHARE_INFO_502, shi502_current_uses),
    LWMSG_MEMBER_PWSTR(SHARE_INFO_502, shi502_path),
    LWMSG_MEMBER_PWSTR(SHARE_INFO_502, shi502_password),
    LWMSG_MEMBER_UINT32(SHARE_INFO_502, shi502_reserved),
    LWMSG_MEMBER_POINTER_BEGIN(SHARE_INFO_502, shi502_security_descriptor),
    LWMSG_UINT8(BYTE),
    LWMSG_POINTER_END,
    LWMSG_ATTR_LENGTH_MEMBER(SHARE_INFO_502, shi502_reserved),
    LWMSG_STRUCT_END,
    LWMSG_TYPE_END
};


#define SHARE_INFO_LEVEL_0   0
#define SHARE_INFO_LEVEL_1   1
#define SHARE_INFO_LEVEL_2   2
#define SHARE_INFO_LEVEL_501 501
#define SHARE_INFO_LEVEL_502 502


static LWMsgTypeSpec gShareInfoUnionSpec[] =
{
    LWMSG_UNION_BEGIN(SHARE_INFO_UNION),
    LWMSG_MEMBER_POINTER(SHARE_INFO_UNION, p0, LWMSG_TYPESPEC(gShareInfo0Spec)),
    LWMSG_ATTR_TAG(SHARE_INFO_LEVEL_0),
    LWMSG_MEMBER_POINTER(SHARE_INFO_UNION, p1, LWMSG_TYPESPEC(gShareInfo1Spec)),
    LWMSG_ATTR_TAG(SHARE_INFO_LEVEL_1),
    LWMSG_MEMBER_POINTER(SHARE_INFO_UNION, p2, LWMSG_TYPESPEC(gShareInfo2Spec)),
    LWMSG_ATTR_TAG(SHARE_INFO_LEVEL_2),
    LWMSG_MEMBER_POINTER(SHARE_INFO_UNION, p501, LWMSG_TYPESPEC(gShareInfo501Spec)),
    LWMSG_ATTR_TAG(SHARE_INFO_LEVEL_501),
    LWMSG_MEMBER_POINTER(SHARE_INFO_UNION, p502, LWMSG_TYPESPEC(gShareInfo502Spec)),
    LWMSG_ATTR_TAG(SHARE_INFO_LEVEL_502),
    LWMSG_UNION_END,
    LWMSG_TYPE_END
};


static LWMsgTypeSpec gShareInfoAddParamsSpec[] =
{
    LWMSG_STRUCT_BEGIN(SHARE_INFO_ADD_PARAMS),
    LWMSG_MEMBER_UINT32(SHARE_INFO_ADD_PARAMS, dwInfoLevel),
    LWMSG_MEMBER_TYPESPEC(SHARE_INFO_ADD_PARAMS, info, gShareInfoUnionSpec),
    LWMSG_ATTR_DISCRIM(SHARE_INFO_ADD_PARAMS, dwInfoLevel),
    LWMSG_STRUCT_END,
    LWMSG_TYPE_END
};

static LWMsgTypeSpec gShareInfoDeleteParamsSpec[] =
{
    LWMSG_STRUCT_BEGIN(SHARE_INFO_DELETE_PARAMS),
    LWMSG_MEMBER_PWSTR(SHARE_INFO_DELETE_PARAMS, servername),
    LWMSG_MEMBER_PWSTR(SHARE_INFO_DELETE_PARAMS, netname),
    LWMSG_MEMBER_UINT32(SHARE_INFO_DELETE_PARAMS, reserved),
    LWMSG_STRUCT_END,
    LWMSG_TYPE_END
};


static LWMsgTypeSpec gShareInfoEnumParamsSpec[] =
{
    LWMSG_STRUCT_BEGIN(SHARE_INFO_ENUM_PARAMS),
    LWMSG_MEMBER_UINT32(SHARE_INFO_ENUM_PARAMS, dwInfoLevel),
    LWMSG_MEMBER_UINT32(SHARE_INFO_ENUM_PARAMS, dwNumEntries),
    LWMSG_MEMBER_UNION_BEGIN(SHARE_INFO_ENUM_PARAMS, info),
    LWMSG_MEMBER_POINTER(SHARE_INFO_UNION, p0, LWMSG_TYPESPEC(gShareInfo0Spec)),
    LWMSG_ATTR_LENGTH_MEMBER(SHARE_INFO_ENUM_PARAMS, dwNumEntries),
    LWMSG_ATTR_TAG(SHARE_INFO_LEVEL_0),
    LWMSG_MEMBER_POINTER(SHARE_INFO_UNION, p1, LWMSG_TYPESPEC(gShareInfo1Spec)),
    LWMSG_ATTR_LENGTH_MEMBER(SHARE_INFO_ENUM_PARAMS, dwNumEntries),
    LWMSG_ATTR_TAG(SHARE_INFO_LEVEL_1),
    LWMSG_MEMBER_POINTER(SHARE_INFO_UNION, p2, LWMSG_TYPESPEC(gShareInfo2Spec)),
    LWMSG_ATTR_LENGTH_MEMBER(SHARE_INFO_ENUM_PARAMS, dwNumEntries),
    LWMSG_ATTR_TAG(SHARE_INFO_LEVEL_2),
    LWMSG_MEMBER_POINTER(SHARE_INFO_UNION, p501, LWMSG_TYPESPEC(gShareInfo501Spec)),
    LWMSG_ATTR_LENGTH_MEMBER(SHARE_INFO_ENUM_PARAMS, dwNumEntries),
    LWMSG_ATTR_TAG(SHARE_INFO_LEVEL_501),
    LWMSG_MEMBER_POINTER(SHARE_INFO_UNION, p502, LWMSG_TYPESPEC(gShareInfo502Spec)),
    LWMSG_ATTR_LENGTH_MEMBER(SHARE_INFO_ENUM_PARAMS, dwNumEntries),
    LWMSG_ATTR_TAG(SHARE_INFO_LEVEL_502),
    LWMSG_UNION_END,
    LWMSG_ATTR_DISCRIM(SHARE_INFO_ENUM_PARAMS, dwInfoLevel),
    LWMSG_STRUCT_END,
    LWMSG_TYPE_END
};


static LWMsgTypeSpec gShareInfoSetParamsSpec[] =
{
    LWMSG_STRUCT_BEGIN(SHARE_INFO_SETINFO_PARAMS),
    LWMSG_MEMBER_PWSTR(SHARE_INFO_SETINFO_PARAMS, pwszNetname),
    LWMSG_MEMBER_UINT32(SHARE_INFO_SETINFO_PARAMS, dwInfoLevel),
    LWMSG_MEMBER_TYPESPEC(SHARE_INFO_SETINFO_PARAMS, Info, gShareInfoUnionSpec),
    LWMSG_ATTR_DISCRIM(SHARE_INFO_SETINFO_PARAMS, dwInfoLevel),
    LWMSG_STRUCT_END,
    LWMSG_TYPE_END
};


static LWMsgTypeSpec gShareInfoGetParamsSpec[] =
{
    LWMSG_STRUCT_BEGIN(SHARE_INFO_GETINFO_PARAMS),
    LWMSG_MEMBER_PWSTR(SHARE_INFO_GETINFO_PARAMS, pwszNetname),
    LWMSG_MEMBER_UINT32(SHARE_INFO_GETINFO_PARAMS, dwInfoLevel),
    LWMSG_MEMBER_UNION_BEGIN(SHARE_INFO_GETINFO_PARAMS, Info),
    LWMSG_MEMBER_POINTER(SHARE_INFO_UNION, p0, LWMSG_TYPESPEC(gShareInfo0Spec)),
    LWMSG_ATTR_TAG(SHARE_INFO_LEVEL_0),
    LWMSG_MEMBER_POINTER(SHARE_INFO_UNION, p1, LWMSG_TYPESPEC(gShareInfo1Spec)),
    LWMSG_ATTR_TAG(SHARE_INFO_LEVEL_1),
    LWMSG_MEMBER_POINTER(SHARE_INFO_UNION, p2, LWMSG_TYPESPEC(gShareInfo2Spec)),
    LWMSG_ATTR_TAG(SHARE_INFO_LEVEL_2),
    LWMSG_MEMBER_POINTER(SHARE_INFO_UNION, p501, LWMSG_TYPESPEC(gShareInfo501Spec)),
    LWMSG_ATTR_TAG(SHARE_INFO_LEVEL_501),
    LWMSG_MEMBER_POINTER(SHARE_INFO_UNION, p502, LWMSG_TYPESPEC(gShareInfo502Spec)),
    LWMSG_ATTR_TAG(SHARE_INFO_LEVEL_502),
    LWMSG_UNION_END,
    LWMSG_ATTR_DISCRIM(SHARE_INFO_GETINFO_PARAMS, dwInfoLevel),
    LWMSG_STRUCT_END,
    LWMSG_TYPE_END
};

#if defined(sun) || defined(_AIX)
#  define ONCE_INIT {PTHREAD_ONCE_INIT}
#else
#  define ONCE_INIT PTHREAD_ONCE_INIT
#endif

static pthread_once_t gShareMarshalContextControl = ONCE_INIT;
static LWMsgContext* gpMarshalContext = NULL;
static LWMsgStatus gMarshalContextStatus = LWMSG_STATUS_SUCCESS;

static
void
LwShareInfoInitMarshalContext(void)
{
    gMarshalContextStatus = lwmsg_context_new(NULL, &gpMarshalContext);
}

static
LW_NTSTATUS
LwShareInfoGetMarshalContext(
    LWMsgContext** ppMarshalContext
    )
{
    NTSTATUS Status = STATUS_SUCCESS;
    int err = 0;

    err = pthread_once(&gShareMarshalContextControl, LwShareInfoInitMarshalContext);
    if (err)
    {
        Status = LwErrnoToNtStatus(err);
        BAIL_ON_NT_STATUS(Status);
    }

    Status = MAP_LWMSG_STATUS(gMarshalContextStatus);
    BAIL_ON_NT_STATUS(Status);

    *ppMarshalContext = gpMarshalContext;

cleanup:

    return Status;

error:

    *ppMarshalContext = NULL;

    goto cleanup;
}

static
LW_NTSTATUS
LwShareInfoAcquireDataContext(
    LWMsgDataContext** ppDataContext
    )
{
    NTSTATUS Status = STATUS_SUCCESS;
    LWMsgContext* pContext;
    LWMsgDataContext* pDataContext;

    Status = LwShareInfoGetMarshalContext(&pContext);
    BAIL_ON_NT_STATUS(Status);

    Status = MAP_LWMSG_STATUS(lwmsg_data_context_new(pContext, &pDataContext));
    BAIL_ON_NT_STATUS(Status);

    *ppDataContext = pDataContext;

cleanup:

    return Status;

error:

    *ppDataContext = NULL;

    goto cleanup;
}

static
void
LwShareInfoReleaseDataContext(
    LWMsgDataContext* pDataContext
    )
{
    if (pDataContext)
    {
        lwmsg_data_context_delete(pDataContext);
    }
}

LW_NTSTATUS
LwShareInfoMarshalAddParameters(
    PSHARE_INFO_ADD_PARAMS pParams,
    PBYTE* ppBuffer,
    ULONG* pulBufferSize
    )
{
    NTSTATUS Status = STATUS_SUCCESS;
    VOID* pBuffer = NULL;
    size_t szBufferSize = 0;
    LWMsgDataContext* pDataContext = NULL;

    Status = LwShareInfoAcquireDataContext(&pDataContext);
    BAIL_ON_NT_STATUS(Status);

    Status = MAP_LWMSG_STATUS(
        lwmsg_data_marshal_flat_alloc(
            pDataContext,
            gShareInfoAddParamsSpec,
            pParams,
            &pBuffer,
            &szBufferSize));
    BAIL_ON_NT_STATUS(Status);

    *ppBuffer = pBuffer;
    *pulBufferSize = (ULONG) szBufferSize;

cleanup:

    LwShareInfoReleaseDataContext(pDataContext);

    return Status;

error:
    *ppBuffer = NULL;
    *pulBufferSize = 0;

    if (pBuffer)
    {
        RtlMemoryFree(pBuffer);
    }

    goto cleanup;
}

LW_NTSTATUS
LwShareInfoUnmarshalAddParameters(
    PBYTE pBuffer,
    ULONG ulBufferSize,
    PSHARE_INFO_ADD_PARAMS* ppParams
    )
{
    NTSTATUS Status = STATUS_SUCCESS;
    PSHARE_INFO_ADD_PARAMS pParams = NULL;
    LWMsgDataContext* pDataContext = NULL;

    Status = LwShareInfoAcquireDataContext(&pDataContext);
    BAIL_ON_NT_STATUS(Status);

    Status = MAP_LWMSG_STATUS(
        lwmsg_data_unmarshal_flat(
            pDataContext,
            gShareInfoAddParamsSpec,
            pBuffer,
            ulBufferSize,
            OUT_PPVOID(&pParams)));
    BAIL_ON_NT_STATUS(Status);

    *ppParams = pParams;

cleanup:

    LwShareInfoReleaseDataContext(pDataContext);

    return Status;

error:

    *ppParams = NULL;

    if (pParams)
    {
        lwmsg_data_free_graph(pDataContext, gShareInfoAddParamsSpec, pParams);
    }

    goto cleanup;
}


LW_NTSTATUS
LwShareInfoMarshalDeleteParameters(
    PSHARE_INFO_DELETE_PARAMS pParams,
    PBYTE* ppBuffer,
    ULONG* pulBufferSize
    )
{
    NTSTATUS Status = STATUS_SUCCESS;
    VOID* pBuffer = NULL;
    size_t ulBufferSize = 0;
    LWMsgDataContext* pDataContext = NULL;

    Status = LwShareInfoAcquireDataContext(&pDataContext);
    BAIL_ON_NT_STATUS(Status);

    Status = MAP_LWMSG_STATUS(
        lwmsg_data_marshal_flat_alloc(
            pDataContext,
            gShareInfoDeleteParamsSpec,
            pParams,
            &pBuffer,
            &ulBufferSize));
    BAIL_ON_NT_STATUS(Status);

    *ppBuffer = pBuffer;
    *pulBufferSize = (ULONG) ulBufferSize;

cleanup:

    LwShareInfoReleaseDataContext(pDataContext);

    return Status;

error:
    *ppBuffer = NULL;
    *pulBufferSize = 0;

    if (pBuffer)
    {
        RtlMemoryFree(pBuffer);
    }

    goto cleanup;
}


LW_NTSTATUS
LwShareInfoUnmarshalDeleteParameters(
    PBYTE pBuffer,
    ULONG ulBufferSize,
    PSHARE_INFO_DELETE_PARAMS* ppParams
    )
{
    NTSTATUS Status = STATUS_SUCCESS;
    PSHARE_INFO_DELETE_PARAMS pParams = NULL;
    LWMsgDataContext* pDataContext = NULL;

    Status = LwShareInfoAcquireDataContext(&pDataContext);
    BAIL_ON_NT_STATUS(Status);

    Status = MAP_LWMSG_STATUS(
        lwmsg_data_unmarshal_flat(
            pDataContext,
            gShareInfoDeleteParamsSpec,
            pBuffer,
            ulBufferSize,
            OUT_PPVOID(&pParams)));
    BAIL_ON_NT_STATUS(Status);

    *ppParams = pParams;

cleanup:

    LwShareInfoReleaseDataContext(pDataContext);

    return Status;

error:

    *ppParams = NULL;

    if (pParams)
    {
        lwmsg_data_free_graph(pDataContext, gShareInfoDeleteParamsSpec, pParams);
    }

    goto cleanup;
}


LW_NTSTATUS
LwShareInfoMarshalEnumParameters(
    PSHARE_INFO_ENUM_PARAMS pParams,
    PBYTE* ppBuffer,
    ULONG* pulBufferSize
    )
{
    NTSTATUS status = STATUS_SUCCESS;
    VOID* pBuffer = NULL;
    size_t ulBufferSize = 0;
    LWMsgDataContext* pDataContext = NULL;

    status = LwShareInfoAcquireDataContext(&pDataContext);
    BAIL_ON_NT_STATUS(status);

    status = MAP_LWMSG_STATUS(
        lwmsg_data_marshal_flat_alloc(
            pDataContext,
            gShareInfoEnumParamsSpec,
            pParams,
            &pBuffer,
            &ulBufferSize));
    BAIL_ON_NT_STATUS(status);

    *ppBuffer = pBuffer;
    *pulBufferSize = (ULONG) ulBufferSize;

cleanup:

    LwShareInfoReleaseDataContext(pDataContext);

    return status;

error:
    *ppBuffer = NULL;
    *pulBufferSize = 0;

    if (pBuffer)
    {
        RtlMemoryFree(pBuffer);
    }

    goto cleanup;
}


LW_NTSTATUS
LwShareInfoUnmarshalEnumParameters(
    PBYTE pBuffer,
    ULONG ulBufferSize,
    PSHARE_INFO_ENUM_PARAMS* ppParams
    )
{
    NTSTATUS Status = STATUS_SUCCESS;
    PSHARE_INFO_ENUM_PARAMS pParams = NULL;
    LWMsgDataContext* pDataContext = NULL;

    Status = LwShareInfoAcquireDataContext(&pDataContext);
    BAIL_ON_NT_STATUS(Status);

    Status = MAP_LWMSG_STATUS(
        lwmsg_data_unmarshal_flat(
            pDataContext,
            gShareInfoEnumParamsSpec,
            pBuffer,
            ulBufferSize,
            OUT_PPVOID(&pParams)));
    BAIL_ON_NT_STATUS(Status);

    *ppParams = pParams;

cleanup:

    LwShareInfoReleaseDataContext(pDataContext);

    return Status;

error:

    *ppParams = NULL;

    if (pParams)
    {
        lwmsg_data_free_graph(pDataContext, gShareInfoEnumParamsSpec, pParams);
    }

    goto cleanup;
}


LW_NTSTATUS
LwShareInfoMarshalSetParameters(
    PSHARE_INFO_SETINFO_PARAMS pParams,
    PBYTE* ppBuffer,
    ULONG* pulBufferSize
    )
{
    NTSTATUS ntStatus = 0;
    VOID* pBuffer = NULL;
    size_t ulBufferSize = 0;
    LWMsgDataContext* pDataContext = NULL;

    ntStatus = LwShareInfoAcquireDataContext(&pDataContext);
    BAIL_ON_NT_STATUS(ntStatus);

    ntStatus = MAP_LWMSG_STATUS(
        lwmsg_data_marshal_flat_alloc(
            pDataContext,
            gShareInfoSetParamsSpec,
            pParams,
            &pBuffer,
            &ulBufferSize));
    BAIL_ON_NT_STATUS(ntStatus);

    *ppBuffer = pBuffer;
    *pulBufferSize = (ULONG) ulBufferSize;

cleanup:

    LwShareInfoReleaseDataContext(pDataContext);

    return ntStatus;

error:
    *ppBuffer = NULL;
    *pulBufferSize = 0;

    if (pBuffer) {
        RtlMemoryFree(pBuffer);
    }

    goto cleanup;
}


LW_NTSTATUS
LwShareInfoUnmarshalSetParameters(
    PBYTE pBuffer,
    ULONG ulBufferSize,
    PSHARE_INFO_SETINFO_PARAMS* ppParams
    )
{
    NTSTATUS ntStatus = 0;
    PSHARE_INFO_SETINFO_PARAMS pParams = NULL;
    LWMsgDataContext* pDataContext = NULL;


    ntStatus = LwShareInfoAcquireDataContext(&pDataContext);
    BAIL_ON_NT_STATUS(ntStatus);

    ntStatus = MAP_LWMSG_STATUS(
        lwmsg_data_unmarshal_flat(
            pDataContext,
            gShareInfoSetParamsSpec,
            pBuffer,
            ulBufferSize,
            OUT_PPVOID(&pParams)));
    BAIL_ON_NT_STATUS(ntStatus);

    *ppParams = pParams;

cleanup:

    LwShareInfoReleaseDataContext(pDataContext);

    return ntStatus;

error:

    *ppParams = NULL;

    if (pParams)
    {
        lwmsg_data_free_graph(pDataContext, gShareInfoSetParamsSpec, pParams);
    }

    goto cleanup;
}


LW_NTSTATUS
LwShareInfoMarshalGetParameters(
    PSHARE_INFO_GETINFO_PARAMS pParams,
    PBYTE* ppBuffer,
    ULONG* pulBufferSize
    )
{
    NTSTATUS ntStatus = 0;
    VOID* pBuffer = NULL;
    size_t ulBufferSize = 0;
    LWMsgDataContext* pDataContext = NULL;

    ntStatus = LwShareInfoAcquireDataContext(&pDataContext);
    BAIL_ON_NT_STATUS(ntStatus);

    ntStatus = MAP_LWMSG_STATUS(
        lwmsg_data_marshal_flat_alloc(
            pDataContext,
            gShareInfoGetParamsSpec,
            pParams,
            &pBuffer,
            &ulBufferSize));
    BAIL_ON_NT_STATUS(ntStatus);

    *ppBuffer = pBuffer;
    *pulBufferSize = (ULONG) ulBufferSize;

cleanup:

    LwShareInfoReleaseDataContext(pDataContext);

    return ntStatus;

error:

    *ppBuffer = NULL;
    *pulBufferSize = 0;

    if (pBuffer)
    {
        RtlMemoryFree(pBuffer);
    }

    goto cleanup;
}


LW_NTSTATUS
LwShareInfoUnmarshalGetParameters(
    PBYTE pBuffer,
    ULONG ulBufferSize,
    PSHARE_INFO_GETINFO_PARAMS* ppParams
    )
{
    NTSTATUS ntStatus = 0;
    PSHARE_INFO_GETINFO_PARAMS pParams = NULL;
    LWMsgDataContext* pDataContext = NULL;

    ntStatus = LwShareInfoAcquireDataContext(&pDataContext);
    BAIL_ON_NT_STATUS(ntStatus);

    ntStatus = MAP_LWMSG_STATUS(
        lwmsg_data_unmarshal_flat(
            pDataContext,
            gShareInfoGetParamsSpec,
            pBuffer,
            ulBufferSize,
            OUT_PPVOID(&pParams)));
    BAIL_ON_NT_STATUS(ntStatus);

    *ppParams = pParams;

cleanup:

    LwShareInfoReleaseDataContext(pDataContext);

    return ntStatus;

error:

    *ppParams = NULL;

    if (pParams)
    {
        lwmsg_data_free_graph(pDataContext, gShareInfoGetParamsSpec, pParams);
    }

    goto cleanup;
}


/*
local variables:
mode: c
c-basic-offset: 4
indent-tabs-mode: nil
tab-width: 4
end:
*/