Subversion Repositories planix.SVN

typedef struct MLock    MLock;
typedef struct Iosect   Iosect;
typedef struct Iotrack  Iotrack;
typedef struct Track    Track;
typedef struct Xfs      Xfs;

struct MLock
{
        char    key;
};

struct Iosect
{
        Iosect *next;
        short   flags;
        MLock   lock;
        Iotrack *t;
        uchar * iobuf;
};

struct Iotrack
{
        short   flags;
        Xfs *   xf;
        long    addr;
        Iotrack *next;          /* in lru list */
        Iotrack *prev;
        Iotrack *hnext;         /* in hash list */
        Iotrack *hprev;
        MLock   lock;
        int     ref;
        Track   *tp;
};

enum{
        Sectorsize = 512,
        Sect2trk = 9,
        Trksize = Sectorsize*Sect2trk
};

struct Track
{
        Iosect *p[Sect2trk];
        uchar   buf[Sect2trk][Sectorsize];
};

#define BMOD            (1<<0)
#define BIMM            (1<<1)
#define BSTALE          (1<<2)

Iosect* getiosect(Xfs*, long, int);
Iosect* getosect(Xfs*, long);
Iosect* getsect(Xfs*, long);
Iosect* newsect(void);
Iotrack*        getiotrack(Xfs*, long);
int     canmlock(MLock*);
int     devcheck(Xfs*);
int     devread(Xfs*, long, void*, long);
int     devwrite(Xfs*, long, void*, long);
int     tread(Iotrack*);
int     twrite(Iotrack*);
void    freesect(Iosect*);
void    iotrack_init(void);
void    mlock(MLock*);
void    purgebuf(Xfs*);
void    purgetrack(Iotrack*);
void    putsect(Iosect*);
void    sync(void);
void    unmlock(MLock*);