150 lines
3.4 KiB
C
150 lines
3.4 KiB
C
/*
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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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#pragma src "/sys/src/libc/9sys"
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#pragma lib "libc.a"
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#define VERSION9P "9P2000"
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#define MAXWELEM 16
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typedef
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struct Fcall
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{
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uint8_t type;
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uint32_t fid;
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uint16_t tag;
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union {
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struct {
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uint32_t msize; /* Tversion, Rversion */
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char *version; /* Tversion, Rversion */
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};
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struct {
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uint16_t oldtag; /* Tflush */
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};
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struct {
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char *ename; /* Rerror */
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};
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struct {
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Qid qid; /* Rattach, Ropen, Rcreate */
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uint32_t iounit; /* Ropen, Rcreate */
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};
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struct {
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Qid aqid; /* Rauth */
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};
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struct {
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uint32_t afid; /* Tauth, Tattach */
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char *uname; /* Tauth, Tattach */
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char *aname; /* Tauth, Tattach */
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};
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struct {
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uint32_t perm; /* Tcreate */
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char *name; /* Tcreate */
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uint8_t mode; /* Tcreate, Topen */
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};
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struct {
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uint32_t newfid; /* Twalk */
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uint16_t nwname; /* Twalk */
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char *wname[MAXWELEM]; /* Twalk */
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};
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struct {
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uint16_t nwqid; /* Rwalk */
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Qid wqid[MAXWELEM]; /* Rwalk */
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};
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struct {
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int64_t offset; /* Tread, Twrite */
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uint32_t count; /* Tread, Twrite, Rread */
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char *data; /* Twrite, Rread */
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};
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struct {
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uint16_t nstat; /* Twstat, Rstat */
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uint8_t *stat; /* Twstat, Rstat */
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};
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};
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} Fcall;
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#define GBIT8(p) ((p)[0])
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#define GBIT16(p) ((p)[0]|((p)[1]<<8))
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#define GBIT32(p) ((p)[0]|((p)[1]<<8)|((p)[2]<<16)|((p)[3]<<24))
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#define GBIT64(p) ((uint32_t)((p)[0]|((p)[1]<<8)|((p)[2]<<16)|((p)[3]<<24)) |\
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((int64_t)((p)[4]|((p)[5]<<8)|((p)[6]<<16)|((p)[7]<<24)) << 32))
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#define PBIT8(p,v) (p)[0]=(v)
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#define PBIT16(p,v) (p)[0]=(v);(p)[1]=(v)>>8
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#define PBIT32(p,v) (p)[0]=(v);(p)[1]=(v)>>8;(p)[2]=(v)>>16;(p)[3]=(v)>>24
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#define PBIT64(p,v) (p)[0]=(v);(p)[1]=(v)>>8;(p)[2]=(v)>>16;(p)[3]=(v)>>24;\
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(p)[4]=(v)>>32;(p)[5]=(v)>>40;(p)[6]=(v)>>48;(p)[7]=(v)>>56
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#define BIT8SZ 1
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#define BIT16SZ 2
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#define BIT32SZ 4
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#define BIT64SZ 8
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#define QIDSZ (BIT8SZ+BIT32SZ+BIT64SZ)
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/* STATFIXLEN includes leading 16-bit count */
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/* The count, however, excludes itself; total size is BIT16SZ+count */
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#define STATFIXLEN (BIT16SZ+QIDSZ+5*BIT16SZ+4*BIT32SZ+1*BIT64SZ) /* amount of fixed length data in a stat buffer */
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#define NOTAG (uint16_t)~0U /* Dummy tag */
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#define NOFID (uint32_t)~0U /* Dummy fid */
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#define IOHDRSZ 24 /* ample room for Twrite/Rread header (iounit) */
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enum
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{
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Tversion = 100,
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Rversion,
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Tauth = 102,
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Rauth,
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Tattach = 104,
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Rattach,
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Terror = 106, /* illegal */
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Rerror,
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Tflush = 108,
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Rflush,
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Twalk = 110,
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Rwalk,
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Topen = 112,
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Ropen,
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Tcreate = 114,
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Rcreate,
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Tread = 116,
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Rread,
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Twrite = 118,
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Rwrite,
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Tclunk = 120,
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Rclunk,
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Tremove = 122,
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Rremove,
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Tstat = 124,
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Rstat,
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Twstat = 126,
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Rwstat,
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Tmax,
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};
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uint convM2S(uint8_t*, uint, Fcall*);
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uint convS2M(Fcall*, uint8_t*, uint);
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uint sizeS2M(Fcall*);
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int statcheck(uint8_t *abuf, uint nbuf);
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uint convM2D(uint8_t*, uint, Dir*, char*);
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uint convD2M(Dir*, uint8_t*, uint);
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uint sizeD2M(Dir*);
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int fcallfmt(Fmt*);
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int dirfmt(Fmt*);
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int dirmodefmt(Fmt*);
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int read9pmsg(int, void*, uint);
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#pragma varargck type "F" Fcall*
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#pragma varargck type "M" ulong
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#pragma varargck type "D" Dir*
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