"File Storage ID" (APP/LFS)

View Options: (help)

Focus:	Maintenance / Operation
Structures:	Abstract / Concrete

Definition:

Alignment:	4-byte boundary
APID:	795/0x31B
Attribute(s):
C type:	unsigned int
Length:	32 bits (4 bytes)

Description:

Layout: (hide detail; help)

Start	Stop	Size		Item Type and Name
0	2	3		FILEDEV dev
3	9	7		FILEDIR dir
10	31	22		FILENUM file

FILESTID (bf)
|  FILEDEV dev (0-2)
|  FILEDIR dir (3-9)
|  FILENUM file (10-31)

typedef struct _LFS_FILESTID_Bfl {

    #if ENDIANNESS_IS_BIG

    /* File ID Device Number */
    unsigned int         dev:3;

    /* File ID Directory Number */
    unsigned int         dir:7;

    /* File ID File Number */
    unsigned int         file:22;

    #elif ENDIANNESS_IS_LITTLE

    /* File ID File Number */
    unsigned int         file:22;

    /* File ID Directory Number */
    unsigned int         dir:7;

    /* File ID Device Number */
    unsigned int         dev:3;

    #else

    #error _FILE_ ENDIANNESS NOT DEFINED

    #endif

} __attribute__((packed)) LFS_FILESTID_Bfl;

typedef union _LFS_FILESTID {

    /* underlying unsigned int */
    unsigned int                    ui;

    /* struct mapped bitfield */
    struct _LFS_FILESTID_Bfl        bf;

} LFS_FILESTID;

Fields:

FILEDEV (index)

Attribute(s):  

Brief:  "File ID Device Number"

Instance(s):  dev

FILEDIR (index)

Attribute(s):  

Brief:  "File ID Directory Number"

Instance(s):  dir

FILENUM (index)

Attribute(s):  

Brief:  "File ID File Number"

Instance(s):  file

Used by:

LLFSDUMPCTDB