Re: [2/3] ntdll: Implement FileIdInformation class support in NtQueryInformationFile.

[Nikolay Sivov]

On 31.12.2016 16:50, Jonathan Doron wrote:
> Signed-off-by: Jonathan Doron <jond(a)wizery.com>
> ---
>  dlls/ntdll/file.c  | 19 ++++++++++++++++++-
>  include/winternl.h |  9 +++++++++
>  2 files changed, 27 insertions(+), 1 deletion(-)
>
> diff --git a/dlls/ntdll/file.c b/dlls/ntdll/file.c
> index 6eddd19..fbadfbd 100644
> --- a/dlls/ntdll/file.c
> +++ b/dlls/ntdll/file.c
> @@ -2379,7 +2379,7 @@ NTSTATUS WINAPI NtQueryInformationFile( HANDLE hFile, PIO_STATUS_BLOCK io,
>          0,                                             /* FileRenameInformationBypassAccessCheck */
>          0,                                             /* FileLinkInformationBypassAccessCheck */
>          0,                                             /* FileVolumeNameInformation */
> -        0,                                             /* FileIdInformation */
> +        sizeof(FILE_ID_INFORMATION),                   /* FileIdInformation */
>          0,                                             /* FileIdExtdDirectoryInformation */
>          0,                                             /* FileReplaceCompletionInformation */
>          0,                                             /* FileHardLinkFullIdInformation */
> @@ -2621,6 +2621,23 @@ NTSTATUS WINAPI NtQueryInformationFile( HANDLE hFile, PIO_STATUS_BLOCK io,
>              }
>          }
>          break;
> +    case FileIdInformation:
> +        {
> +            struct statfs volstats;
> +            FILE_ID_INFORMATION *info = ptr;
> +            if ((fstat(fd, &st) == -1) || (fstatfs(fd, &volstats) == -1))
> +            {
> +                io->u.Status = FILE_GetNtStatus();
> +            }
> +            else
> +            {
> +                memset(info, 0, sizeof(*info));
> +                ((PLARGE_INTEGER)&info->VolumeSerialNumber)->LowPart = (ULONG)volstats.f_fsid.__val[0];
> +                ((PLARGE_INTEGER)&info->VolumeSerialNumber)->HighPart = (ULONG)volstats.f_fsid.__val[1];
> +                ((PLARGE_INTEGER)&info->FileId)->QuadPart = st.st_ino;
> +            }
> +        }
> +        break;
>      default:
>          FIXME("Unsupported class (%d)\n", class);
>          io->u.Status = STATUS_NOT_IMPLEMENTED;
> diff --git a/include/winternl.h b/include/winternl.h
> index 891b6a7..2f2ea86 100644
> --- a/include/winternl.h
> +++ b/include/winternl.h
> @@ -571,6 +571,15 @@ typedef struct _FILE_INTERNAL_INFORMATION {
>      LARGE_INTEGER IndexNumber;
>  } FILE_INTERNAL_INFORMATION, *PFILE_INTERNAL_INFORMATION;
>
> +typedef struct _FILE_ID_128 {
> +    UCHAR Identifier[16];
> +} FILE_ID_128, *PFILE_ID_128;
> Windows SDK has it in winnt.h, using BYTE instead of UCHAR.
> +
> +typedef struct _FILE_ID_INFORMATION {
> +    ULONGLONG VolumeSerialNumber;
> +    FILE_ID_128 FileId;
> +} FILE_ID_INFORMATION, *PFILE_ID_INFORMATION;
> +
> This one should go to winbase.h, as FILE_ID_INFO.
>  typedef struct _FILE_EA_INFORMATION {
>      ULONG EaSize;
>  } FILE_EA_INFORMATION, *PFILE_EA_INFORMATION;