mntpointansi.c

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/*
 * COPYRIGHT:       See COPYING in the top level directory
 * PROJECT:         ReactOS system libraries
 * FILE:            dll/win32/kernel32/client/file/mntpointansi.c
 * PURPOSE:         Volume mount point functions (ANSI)
 */
 
/* INCLUDES *****************************************************************/
 
#include <k32.h>
 
/* FUNCTIONS ****************************************************************/
 
/*
 * @implemented
 */
BOOL
WINAPI
GetVolumeNameForVolumeMountPointA(IN LPCSTR lpszVolumeMountPoint,
                                  IN LPSTR lpszVolumeName,
                                  IN DWORD cchBufferLength)
{
    BOOL Ret;
    ANSI_STRING VolumeName;
    UNICODE_STRING VolumeNameU;
    PUNICODE_STRING VolumeMountPointU;
 
    /* Convert mount point to unicode */
    VolumeMountPointU = Basep8BitStringToStaticUnicodeString(lpszVolumeMountPoint);
    if (VolumeMountPointU == NULL)
    {
        return FALSE;
    }
 
    /* Initialize the strings we'll use for convention */
    VolumeName.Buffer = lpszVolumeName;
    VolumeName.Length = 0;
    VolumeName.MaximumLength = cchBufferLength - 1;
 
    VolumeNameU.Length = 0;
    VolumeNameU.MaximumLength = (cchBufferLength - 1) * sizeof(WCHAR) + sizeof(UNICODE_NULL);
    /* Allocate a buffer big enough to contain the returned name */
    VolumeNameU.Buffer = RtlAllocateHeap(RtlGetProcessHeap(), 0, VolumeNameU.MaximumLength);
    if (VolumeNameU.Buffer == NULL)
    {
        SetLastError(ERROR_NOT_ENOUGH_MEMORY);
        return FALSE;
    }
 
    /* Query -W */
    Ret = GetVolumeNameForVolumeMountPointW(VolumeMountPointU->Buffer, VolumeNameU.Buffer, cchBufferLength);
    /* If it succeed, perform -A conversion */
    if (Ret)
    {
        NTSTATUS Status;
 
        /* Reinit our string for length */
        RtlInitUnicodeString(&VolumeNameU, VolumeNameU.Buffer);
        /* Convert to ANSI */
        Status = RtlUnicodeStringToAnsiString(&VolumeName, &VolumeNameU, FALSE);
        /* If conversion failed, force failure, otherwise, just null terminate */
        if (!NT_SUCCESS(Status))
        {
            Ret = FALSE;
            BaseSetLastNTError(Status);
        }
        else
        {
            VolumeName.Buffer[VolumeName.Length] = ANSI_NULL;
        }
    }
 
    /* Internal buffer no longer needed */
    RtlFreeHeap(RtlGetProcessHeap(), 0, VolumeNameU.Buffer);
 
    return Ret;
}
 
/* EOF */