Hi Adnan,

Well, I would think the reason is in the other member of
union : "u8 raw[16];        /* Raw binary for ease of access. */"

For instance this might help for an hexadecimal display in
which you generally want the bytes from lowest memory to
highest memory.

Regards

Jean-Pierre


> Message du 25/04/08 14:07
> De : "Adnan Shaheen" <[EMAIL PROTECTED]>
> A : [email protected]
> Copie à : 
> Objet : [ntfs-3g-devel] About GUID
> 
> Hello all.
> Can any one tell me why the structure of GUID in libntfs and windows are
> different.
> 
> The libntfs struct for GUID is
> 
> typedef union {
>     struct {
>         le32 data1;    /* The first eight hexadecimal digits of the GUID. */
>         le16 data2;    /* The first group of four hexadecimal digits. */
>         le16 data3;    /* The second group of four hexadecimal digits. */
>         u8 data4[8];    /* The first two bytes are the third group of four
> hexadecimal digits.  The remaining six bytes are the final 12 hexadecimal
> digits. */
>     } __attribute__((__packed__));
>     u8 raw[16];        /* Raw binary for ease of access. */
> } __attribute__((__packed__)) GUID;
> 
> WHERE AS in windows
> 
> its only the structure not a union
> 
> typedef struct _GUID {
>    unsigned long  Data1;
>    unsigned short Data2;
>    unsigned short Data3;
>    unsigned char  Data4[ 8 ];
> } GUID;
> 
> 
> Why is we use the union in libntfs, and why it is only a struct
> Whereas the struct is exactly same.
> -- 
> Regards:
> Adnan Shaheen.
> +92-321-518-0278
> 
>
> [ (pas de nom de fichier) (0.3 Ko) ]
> [ (pas de nom de fichier) (0.2 Ko) ]


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