jehanne/sys/include/usb/usbfs.h

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/*
* This file is part of the UCB release of Plan 9. It is subject to the license
* terms in the LICENSE file found in the top-level directory of this
* distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
* part of the UCB release of Plan 9, including this file, may be copied,
* modified, propagated, or distributed except according to the terms contained
* in the LICENSE file.
*/
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];
uint64_t 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);
int32_t (*read)(Usbfs *fs, Fid *f, void *data, int32_t count, int64_t offset);
int32_t (*write)(Usbfs *fs, Fid*f, void *data, int32_t count, int64_t offset);
int (*stat)(Usbfs *fs, Qid q, Dir *d);
void (*end)(Usbfs *fs);
};
typedef int (*Dirgen)(Usbfs*, Qid, int, Dir*, void*);
int32_t usbreadbuf(void *data, int32_t count, int64_t offset, void *buf, int32_t n);
void usbfsadd(Usbfs *dfs);
void usbfsdel(Usbfs *dfs);
int usbdirread(Usbfs*f, Qid q, char *data, int32_t cnt, int64_t 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;