Subversion Repositories planix.SVN

typedef struct Usbfs Usbfs;
typedef struct Fid Fid;

enum
{
        Hdrsize = 128,          /* plenty of room for headers */
        Msgsize = 8216,         /* our preferred iounit (also devmnt's) */
        Bufsize = Hdrsize + Msgsize,
        Namesz = 40,
        Errmax = 128,
        ONONE = ~0,             /* omode in Fid when not open */
};

struct Fid
{
        int     fid;
        Qid     qid;
        int     omode;
        Fid*    next;
        void*   aux;
};

struct Usbfs
{
        char    name[Namesz];
        uvlong  qid;
        Dev*    dev;
        void*   aux;

        int     (*walk)(Usbfs *fs, Fid *f, char *name);
        void    (*clone)(Usbfs *fs, Fid *of, Fid *nf);
        void    (*clunk)(Usbfs *fs, Fid *f);
        int     (*open)(Usbfs *fs, Fid *f, int mode);
        long    (*read)(Usbfs *fs, Fid *f, void *data, long count, vlong offset);
        long    (*write)(Usbfs *fs, Fid*f, void *data, long count, vlong offset);
        int     (*stat)(Usbfs *fs, Qid q, Dir *d);
        void    (*end)(Usbfs *fs);
};

typedef int (*Dirgen)(Usbfs*, Qid, int, Dir*, void*);

long    usbreadbuf(void *data, long count, vlong offset, void *buf, long n);
void    usbfsadd(Usbfs *dfs);
void    usbfsdel(Usbfs *dfs);
int     usbdirread(Usbfs*f, Qid q, char *data, long cnt, vlong off, Dirgen gen, void *arg);
void    usbfsinit(char* srv, char *mnt, Usbfs *f, int flag);

void    usbfsdirdump(void);

extern char Enotfound[];
extern char Etoosmall[];
extern char Eio[];
extern char Eperm[];
extern char Ebadcall[];
extern char Ebadfid[];
extern char Einuse[];
extern char Eisopen[];
extern char Ebadctl[];

extern Usbfs usbdirfs;
extern int usbfsdebug;