jehanne/sys/include/9P2000.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.
*/
#pragma src "/sys/src/lib/9p2000"
#pragma lib "lib9p2000.a"
#define VERSION9P "9P2000"
#define MAXWELEM 16
/* Plan9/9p2000 flags for Topen Tcreate */
#define NP_OREAD 0 /* open for read */
#define NP_OWRITE 1 /* write */
#define NP_ORDWR 2 /* read and write */
#define NP_OEXEC 3 /* execute, == read but check execute permission */
#define NP_OTRUNC 16 /* or'ed in (except for exec), truncate file first */
#define NP_OCEXEC 32 /* or'ed in, close on exec */
#define NP_ORCLOSE 64 /* or'ed in, remove on close */
/* bits that must be zero in open/create mode */
#define NP_OZEROES ~(NP_OREAD|NP_OWRITE|NP_ORDWR|NP_OEXEC|NP_OTRUNC|NP_OCEXEC|NP_ORCLOSE)
typedef enum NinepMsgType
{
Tversion = 100,
Rversion,
Tauth = 102,
Rauth,
Tattach = 104,
Rattach,
Terror = 106, /* illegal */
Rerror,
Tflush = 108,
Rflush,
Twalk = 110,
Rwalk,
Topen = 112,
Ropen,
Tcreate = 114,
Rcreate,
Tread = 116,
Rread,
Twrite = 118,
Rwrite,
Tclunk = 120,
Rclunk,
Tremove = 122,
Rremove,
Tstat = 124,
Rstat,
Twstat = 126,
Rwstat,
Tmax,
} NinepMsgType;
typedef
struct Fcall
{
NinepMsgType type : 8;
uint32_t fid;
uint16_t tag;
union {
struct {
uint32_t msize; /* Tversion, Rversion */
char *version; /* Tversion, Rversion */
};
struct {
uint16_t oldtag; /* Tflush */
};
struct {
char *ename; /* Rerror */
};
struct {
Qid qid; /* Rattach, Ropen, Rcreate */
uint32_t iounit; /* Ropen, Rcreate */
};
struct {
Qid aqid; /* Rauth */
};
struct {
uint32_t afid; /* Tauth, Tattach */
char *uname; /* Tauth, Tattach */
char *aname; /* Tauth, Tattach */
};
struct {
uint32_t perm; /* Tcreate */
char *name; /* Tcreate */
uint8_t mode; /* Tcreate, Topen */
};
struct {
uint32_t newfid; /* Twalk */
uint16_t nwname; /* Twalk */
char *wname[MAXWELEM]; /* Twalk */
};
struct {
uint16_t nwqid; /* Rwalk */
Qid wqid[MAXWELEM]; /* Rwalk */
};
struct {
int64_t offset; /* Tread, Twrite */
uint32_t count; /* Tread, Twrite, Rread */
char *data; /* Twrite, Rread */
};
struct {
uint16_t nstat; /* Twstat, Rstat */
uint8_t *stat; /* Twstat, Rstat */
};
};
} Fcall;
#define GBIT8(p) ((p)[0])
#define GBIT16(p) ((p)[0]|((p)[1]<<8))
#define GBIT32(p) ((p)[0]|((p)[1]<<8)|((p)[2]<<16)|((p)[3]<<24))
#define GBIT64(p) ((uint32_t)((p)[0]|((p)[1]<<8)|((p)[2]<<16)|((p)[3]<<24)) |\
((int64_t)((p)[4]|((p)[5]<<8)|((p)[6]<<16)|((p)[7]<<24)) << 32))
#define PBIT8(p,v) (p)[0]=(v)
#define PBIT16(p,v) (p)[0]=(v);(p)[1]=(v)>>8
#define PBIT32(p,v) (p)[0]=(v);(p)[1]=(v)>>8;(p)[2]=(v)>>16;(p)[3]=(v)>>24
#define PBIT64(p,v) (p)[0]=(v);(p)[1]=(v)>>8;(p)[2]=(v)>>16;(p)[3]=(v)>>24;\
(p)[4]=(v)>>32;(p)[5]=(v)>>40;(p)[6]=(v)>>48;(p)[7]=(v)>>56
#define BIT8SZ 1
#define BIT16SZ 2
#define BIT32SZ 4
#define BIT64SZ 8
#define QIDSZ (BIT8SZ+BIT32SZ+BIT64SZ)
/* STATFIXLEN includes leading 16-bit count */
/* The count, however, excludes itself; total size is BIT16SZ+count */
#define STATFIXLEN (BIT16SZ+QIDSZ+5*BIT16SZ+4*BIT32SZ+1*BIT64SZ) /* amount of fixed length data in a stat buffer */
#define NOTAG (uint16_t)~0U /* Dummy tag */
#define NOFID (uint32_t)~0U /* Dummy fid */
#define IOHDRSZ 24 /* ample room for Twrite/Rread header (iounit) */
extern unsigned int convM2S(uint8_t*, uint, Fcall*);
extern unsigned int convS2M(Fcall*, uint8_t*, uint);
extern unsigned int sizeS2M(Fcall*);
extern int statcheck(uint8_t *abuf, uint nbuf);
extern int dirfmt(Fmt *fmt);
extern int fcallfmt(Fmt*);
extern int read9pmsg(int, void*, uint);
#pragma varargck type "F" Fcall*
#pragma varargck type "M" ulong