71 lines
1.8 KiB
C
71 lines
1.8 KiB
C
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/*
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* This file is part of the UCB release of Plan 9. It is subject to the license
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* terms in the LICENSE file found in the top-level directory of this
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* distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
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* part of the UCB release of Plan 9, including this file, may be copied,
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* modified, propagated, or distributed except according to the terms contained
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* in the LICENSE file.
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*/
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typedef struct Usbfs Usbfs;
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typedef struct Fid Fid;
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enum
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{
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Hdrsize = 128, /* plenty of room for headers */
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Msgsize = 8216, /* our preferred iounit (also devmnt's) */
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Bufsize = Hdrsize + Msgsize,
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Namesz = 40,
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Errmax = 128,
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ONONE = ~0, /* omode in Fid when not open */
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};
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struct Fid
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{
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int fid;
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Qid qid;
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int omode;
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Fid* next;
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void* aux;
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};
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struct Usbfs
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{
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char name[Namesz];
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uint64_t qid;
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Dev* dev;
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void* aux;
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int (*walk)(Usbfs *fs, Fid *f, char *name);
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void (*clone)(Usbfs *fs, Fid *of, Fid *nf);
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void (*clunk)(Usbfs *fs, Fid *f);
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int (*open)(Usbfs *fs, Fid *f, int mode);
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int32_t (*read)(Usbfs *fs, Fid *f, void *data, int32_t count, int64_t offset);
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int32_t (*write)(Usbfs *fs, Fid*f, void *data, int32_t count, int64_t offset);
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int (*stat)(Usbfs *fs, Qid q, Dir *d);
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void (*end)(Usbfs *fs);
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};
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typedef int (*Dirgen)(Usbfs*, Qid, int, Dir*, void*);
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int32_t usbreadbuf(void *data, int32_t count, int64_t offset, void *buf, int32_t n);
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void usbfsadd(Usbfs *dfs);
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void usbfsdel(Usbfs *dfs);
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int usbdirread(Usbfs*f, Qid q, char *data, int32_t cnt, int64_t off, Dirgen gen, void *arg);
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void usbfsinit(char* srv, char *mnt, Usbfs *f, int flag);
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void usbfsdirdump(void);
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extern char Enotfound[];
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extern char Etoosmall[];
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extern char Eio[];
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extern char Eperm[];
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extern char Ebadcall[];
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extern char Ebadfid[];
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extern char Einuse[];
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extern char Eisopen[];
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extern char Ebadctl[];
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extern Usbfs usbdirfs;
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extern int usbfsdebug;
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