/*  * 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. */ #include "all.h"#include "9p1.h" #define	CHAR(x)		*p++ = f->x#define	SHORT(x)	{ ulong vvv = f->x; p[0] = vvv; p[1] = vvv>>8; p += 2; }#define	VLONG(q)	p[0] = (q); p[1] = (q)>>8; p[2] = (q)>>16; p[3] = (q)>>24; p += 4#define	LONG(x)		{ ulong vvv = f->x; VLONG(vvv); }#define	BYTES(x,n)	memmove(p, f->x, n); p += n#define	STRING(x,n)	strncpy((char*)p, f->x, n); p += n intconvS2M9p1(Oldfcall *f, uchar *ap){	uchar *p;	int t; 	p = ap;	CHAR(type);	t = f->type;	SHORT(tag);	switch(t)	{	default:		print("convS2M9p1: bad type: %d\n", t);		return 0; 	case Tnop9p1:	case Tosession9p1:		break; 	case Tsession9p1:		BYTES(chal, sizeof(f->chal));		break; 	case Tflush9p1:		SHORT(oldtag);		break; 	case Tattach9p1:		SHORT(fid);		STRING(uname, sizeof(f->uname));		STRING(aname, sizeof(f->aname));		BYTES(ticket, sizeof(f->ticket));		BYTES(auth, sizeof(f->auth));		break; 	case Toattach9p1:		SHORT(fid);		STRING(uname, sizeof(f->uname));		STRING(aname, sizeof(f->aname));		BYTES(ticket, NAMELEN);		break; 	case Tclone9p1:		SHORT(fid);		SHORT(newfid);		break; 	case Twalk9p1:		SHORT(fid);		STRING(name, sizeof(f->name));		break; 	case Tclwalk9p1:		SHORT(fid);		SHORT(newfid);		STRING(name, sizeof(f->name));		break; 	case Topen9p1:		SHORT(fid);		CHAR(mode);		break; 	case Tcreate9p1:		SHORT(fid);		STRING(name, sizeof(f->name));		LONG(perm);		CHAR(mode);		break; 	case Tread9p1:		SHORT(fid);		LONG(offset); VLONG(0);		SHORT(count);		break; 	case Twrite9p1:		SHORT(fid);		LONG(offset); VLONG(0);		SHORT(count);		p++;		if((uchar*)p == (uchar*)f->data) {			p += f->count;			break;		}		BYTES(data, f->count);		break; 	case Tclunk9p1:	case Tremove9p1:	case Tstat9p1:		SHORT(fid);		break; 	case Twstat9p1:		SHORT(fid);		BYTES(stat, sizeof(f->stat));		break;/* */	case Rnop9p1:	case Rosession9p1:	case Rflush9p1:		break; 	case Rsession9p1:		BYTES(chal, sizeof(f->chal));		BYTES(authid, sizeof(f->authid));		BYTES(authdom, sizeof(f->authdom));		break; 	case Rerror9p1:		STRING(ename, sizeof(f->ename));		break; 	case Rclone9p1:	case Rclunk9p1:	case Rremove9p1:	case Rwstat9p1:		SHORT(fid);		break; 	case Rwalk9p1:	case Ropen9p1:	case Rcreate9p1:	case Rclwalk9p1:		SHORT(fid);		LONG(qid.path);		LONG(qid.version);		break; 	case Rattach9p1:		SHORT(fid);		LONG(qid.path);		LONG(qid.version);		BYTES(rauth, sizeof(f->rauth));		break; 	case Roattach9p1:		SHORT(fid);		LONG(qid.path);		LONG(qid.version);		break; 	case Rread9p1:		SHORT(fid);		SHORT(count);		p++;		if((uchar*)p == (uchar*)f->data) {			p += f->count;			break;		}		BYTES(data, f->count);		break; 	case Rwrite9p1:		SHORT(fid);		SHORT(count);		break; 	case Rstat9p1:		SHORT(fid);		BYTES(stat, sizeof(f->stat));		break;	}	return p - (uchar*)ap;} /* * buggery to give false qid for * the top 2 levels of the dump fs */static ulongfakeqid9p1(Dentry *f){	ulong q;	int c; 	q = f->qid.path;	if(q == (QPROOT|QPDIR)) {		c = f->name[0];		if(c >= '0' && c <= '9') {			q = 3|QPDIR;			c = (c-'0')*10 + (f->name[1]-'0');			if(c >= 1 && c <= 12)				q = 4|QPDIR;		}	}	return q;} intconvD2M9p1(Dentry *f, char *ap){	uchar *p;	ulong q; 	p = (uchar*)ap;	STRING(name, sizeof(f->name)); 	memset(p, 0, 2*NAMELEN);	uidtostr((char*)p, f->uid);	p += NAMELEN; 	uidtostr((char*)p, f->gid);	p += NAMELEN; 	q = fakeqid9p1(f);	VLONG(q);	LONG(qid.version);	{		q = f->mode & 0x0fff;		if(f->mode & DDIR)			q |= PDIR;		if(f->mode & DAPND)			q |= PAPND;		if(f->mode & DLOCK)			q |= PLOCK;		VLONG(q);	}	LONG(atime);	LONG(mtime);	LONG(size); VLONG(0);	VLONG(0);	return p - (uchar*)ap;} #undef	CHAR#undef	SHORT#undef	LONG#undef	VLONG#undef	BYTES#undef	STRING #define	CHAR(x)		f->x = *p++#define	SHORT(x)	f->x = (p[0] | (p[1]<<8)); p += 2#define	VLONG(q)	q = (p[0] | (p[1]<<8) | (p[2]<<16) | (p[3]<<24)); p += 4#define	LONG(x)		VLONG(f->x)#define	BYTES(x,n)	memmove(f->x, p, n); p += n#define	STRING(x,n)	memmove(f->x, p, n); p += n intconvM2S9p1(uchar *ap, Oldfcall *f, int n){	uchar *p;	int t; 	p = ap;	CHAR(type);	t = f->type;	SHORT(tag);	switch(t)	{	default:		/*		 * only whine if it couldn't be a 9P2000 Tversion9p1.		 */		if(t != 19 || ap[4] != 100)			print("convM2S9p1: bad type: %d\n", f->type);		return 0; 	case Tnop9p1:	case Tosession9p1:		break; 	case Tsession9p1:		BYTES(chal, sizeof(f->chal));		break; 	case Tflush9p1:		SHORT(oldtag);		break; 	case Tattach9p1:		SHORT(fid);		BYTES(uname, sizeof(f->uname));		BYTES(aname, sizeof(f->aname));		BYTES(ticket, sizeof(f->ticket));		BYTES(auth, sizeof(f->auth));		break; 	case Toattach9p1:		SHORT(fid);		BYTES(uname, sizeof(f->uname));		BYTES(aname, sizeof(f->aname));		BYTES(ticket, NAMELEN);		break; 	case Tclone9p1:		SHORT(fid);		SHORT(newfid);		break; 	case Twalk9p1:		SHORT(fid);		BYTES(name, sizeof(f->name));		break; 	case Tclwalk9p1:		SHORT(fid);		SHORT(newfid);		BYTES(name, sizeof(f->name));		break; 	case Tremove9p1:		SHORT(fid);		break; 	case Topen9p1:		SHORT(fid);		CHAR(mode);		break; 	case Tcreate9p1:		SHORT(fid);		BYTES(name, sizeof(f->name));		LONG(perm);		CHAR(mode);		break; 	case Tread9p1:		SHORT(fid);		LONG(offset); p += 4;		SHORT(count);		break; 	case Twrite9p1:		SHORT(fid);		LONG(offset); p += 4;		SHORT(count);		p++;		f->data = (char*)p; p += f->count;		break; 	case Tclunk9p1:	case Tstat9p1:		SHORT(fid);		break; 	case Twstat9p1:		SHORT(fid);		BYTES(stat, sizeof(f->stat));		break; /* */	case Rnop9p1:	case Rosession9p1:		break; 	case Rsession9p1:		BYTES(chal, sizeof(f->chal));		BYTES(authid, sizeof(f->authid));		BYTES(authdom, sizeof(f->authdom));		break; 	case Rerror9p1:		BYTES(ename, sizeof(f->ename));		break; 	case Rflush9p1:		break; 	case Rclone9p1:	case Rclunk9p1:	case Rremove9p1:	case Rwstat9p1:		SHORT(fid);		break; 	case Rwalk9p1:	case Rclwalk9p1:	case Ropen9p1:	case Rcreate9p1:		SHORT(fid);		LONG(qid.path);		LONG(qid.version);		break; 	case Rattach9p1:		SHORT(fid);		LONG(qid.path);		LONG(qid.version);		BYTES(rauth, sizeof(f->rauth));		break; 	case Roattach9p1:		SHORT(fid);		LONG(qid.path);		LONG(qid.version);		break; 	case Rread9p1:		SHORT(fid);		SHORT(count);		p++;		f->data = (char*)p; p += f->count;		break; 	case Rwrite9p1:		SHORT(fid);		SHORT(count);		break; 	case Rstat9p1:		SHORT(fid);		BYTES(stat, sizeof(f->stat));		break;	}	if((uchar*)ap+n == p)		return n;	return 0;} intconvM2D9p1(char *ap, Dentry *f){	uchar *p;	char str[28]; 	p = (uchar*)ap;	BYTES(name, sizeof(f->name)); 	memmove(str, p, NAMELEN);	p += NAMELEN;	f->uid = strtouid(str); 	memmove(str, p, NAMELEN);	p += NAMELEN;	f->gid = strtouid(str); 	LONG(qid.path);	LONG(qid.version);	{		LONG(atime);		f->mode = (f->atime & 0x0fff) | DALLOC;		if(f->atime & PDIR)			f->mode |= DDIR;		if(f->atime & PAPND)			f->mode |= DAPND;		if(f->atime & PLOCK)			f->mode |= DLOCK;	}	LONG(atime);	LONG(mtime);	LONG(size); p += 4;	p += 4;	return p - (uchar*)ap;}