FAT32中有一个这个FATFS类型，不知道在posix中可有对应的类型

发布于 2019-09-12 17:54:54 浏览：1512 订阅该版

* 本帖最后由 aozima 于 2019-9-12 17:56 编辑 *

请问一下，这个类型，在POSIX里面是否有类似的类型，可以通过，具体类容如下：
```/* File system object structure (FATFS) */

typedef struct {
    BYTE    fs_type;        /* File system type (0:N/A) */
    BYTE    drv;            /* Physical drive number */
    BYTE    n_fats;            /* Number of FATs (1 or 2) */
    BYTE    wflag;            /* win[] flag (b0:dirty) */
    BYTE    fsi_flag;        /* FSINFO flags (b7:disabled, b0:dirty) */
    WORD    id;                /* File system mount ID */
    WORD    n_rootdir;        /* Number of root directory entries (FAT12/16) */
    WORD    csize;            /* Cluster size [sectors] */
#if _MAX_SS != _MIN_SS
    WORD    ssize;            /* Sector size (512, 1024, 2048 or 4096) */
#endif
#if _USE_LFN != 0
    WCHAR*    lfnbuf;            /* LFN working buffer */
#endif
#if _FS_EXFAT
    BYTE*    dirbuf;            /* Directory entry block scratchpad buffer */
#endif
#if _FS_REENTRANT
    _SYNC_t    sobj;            /* Identifier of sync object */
#endif
#if !_FS_READONLY
    DWORD    last_clst;        /* Last allocated cluster */
    DWORD    free_clst;        /* Number of free clusters */
#endif
#if _FS_RPATH != 0
    DWORD    cdir;            /* Current directory start cluster (0:root) */
#if _FS_EXFAT
    DWORD    cdc_scl;        /* Containing directory start cluster (invalid when cdir is 0) */
    DWORD    cdc_size;        /* b31-b8:Size of containing directory, b7-b0: Chain status */
    DWORD    cdc_ofs;        /* Offset in the containing directory (invalid when cdir is 0) */
#endif
#endif
    DWORD    n_fatent;        /* Number of FAT entries (number of clusters + 2) */
    DWORD    fsize;            /* Size of an FAT [sectors] */
    DWORD    volbase;        /* Volume base sector */
    DWORD    fatbase;        /* FAT base sector */
    DWORD    dirbase;        /* Root directory base sector/cluster */
    DWORD    database;        /* Data base sector */
    DWORD    winsect;        /* Current sector appearing in the win[] */
    BYTE    win[_MAX_SS];    /* Disk access window for Directory, FAT (and file data at tiny cfg) */
} FATFS;
```

我需要rt_malloc一个这个类型的虚拟磁盘，但是在posix中好像不知道怎么调用？