39098 typedef struct unixFile unixFile;  typedef
39099 struct unixFile {  struct
39101   sqlite3_vfs *pVfs;                  /* The VFS that created this unixFile */  argument
39102   unixInodeInfo *pInode;              /* Info about locks on this inode */
39103   int h;                              /* The file descriptor */
39104   unsigned char eFileLock;            /* The type of lock held on this fd */
39105   unsigned short int ctrlFlags;       /* Behavioral bits.  UNIXFILE_* flags */
39106   int lastErrno;                      /* The unix errno from last I/O error */
39107   void *lockingContext;               /* Locking style specific state */
39108   UnixUnusedFd *pPreallocatedUnused;  /* Pre-allocated UnixUnusedFd */
39109   const char *zPath;                  /* Name of the file */
39110   unixShm *pShm;                      /* Shared memory segment information */
39111   int szChunk;                        /* Configured by FCNTL_CHUNK_SIZE */
39113   int nFetchOut;                      /* Number of outstanding xFetch refs */
39114   sqlite3_int64 mmapSize;             /* Usable size of mapping at pMapRegion */
39115   sqlite3_int64 mmapSizeActual;       /* Actual size of mapping at pMapRegion */
39116   sqlite3_int64 mmapSizeMax;          /* Configured FCNTL_MMAP_SIZE value */
39117   void *pMapRegion;                   /* Memory mapped region */
39119   int sectorSize;                     /* Device sector size */
39120   int deviceCharacteristics;          /* Precomputed device characteristics */
39122   int openFlags;                      /* The flags specified at open() */
39125   unsigned fsFlags;                   /* cached details from statfs() */
39128   unsigned iBusyTimeout;              /* Wait this many millisec on locks */
39129   int bBlockOnConnect;                /* True to block for SHARED locks */
39132   struct vxworksFileId *pId;          /* Unique file ID */
39163 ** Allowed values for the unixFile.ctrlFlags bitmask:  argument