Correct stat size.
 [rsc] --rw-rw-r-- M 73506 glenda sys 1723 Jan  7 11:37 sys/src/ape/lib/ap/plan9/dirstat.c
	/n/sourcesdump/2006/0107/plan9/sys/src/ape/lib/ap/plan9/dirstat.c:18,28 - 
	/n/sourcesdump/2006/0108/plan9/sys/src/ape/lib/ap/plan9/dirstat.c:18,28
	  
	  	nd = DIRSIZE;
	  	for(i=0; i<2; i++){	/* should work by the second try */
	- 		d = malloc(sizeof(Dir) + nd);
	+ 		d = malloc(sizeof(Dir) + BIT16SZ +nd);
	  		if(d == nil)
	  			return nil;
	  		buf = (uchar*)&d[1];
	- 		n = _STAT(name, buf, nd);
	+ 		n = _STAT(name, buf, BIT16SZ+nd);
	  		if(n < BIT16SZ){
	  			free(d);
	  			return nil;
	/n/sourcesdump/2006/0107/plan9/sys/src/ape/lib/ap/plan9/dirstat.c:32,38 - 
	/n/sourcesdump/2006/0108/plan9/sys/src/ape/lib/ap/plan9/dirstat.c:32,38
	  			_convM2D(buf, n, d, (char*)&d[1]);
	  			return d;
	  		}
	- 		/* else sizeof(Dir)+nd is plenty */
	+ 		/* else sizeof(Dir)+BIT16SZ+nd is plenty */
	  		free(d);
	  	}
	  	return nil;

Fix usage.
 [rsc] --rw-rw-r-- M 73506 rsc sys 7027 Jan  7 11:39 sys/src/cmd/aquarela/aquarela.c
	/n/sourcesdump/2006/0107/plan9/sys/src/cmd/aquarela/aquarela.c:176,183 - 
	/n/sourcesdump/2006/0108/plan9/sys/src/cmd/aquarela/aquarela.c:176,183
	  void
	  usage(void)
	  {
	- 	print("usage: aquarela [-u unicodevalue]\n");
	- 	threadexitsall("");
	+ 	fprint(2, "usage: %s [-d debug-opt] [-n] [-p] [-u 1|0] [-w workgroup]\n", argv0);
	+ 	threadexitsall("usage");
	  }
	  
	  static void
 [rsc] --rw-rw-r-- M 73506 rsc sys 1141 Jan  7 11:39 sys/src/cmd/aquarela/smbglobals.c
	/n/sourcesdump/2006/0107/plan9/sys/src/cmd/aquarela/smbglobals.c:36,43 - 
	/n/sourcesdump/2006/0108/plan9/sys/src/cmd/aquarela/smbglobals.c:36,46
	  	if (smbglobals.serverinfo.remark == nil)
	  		smbglobals.serverinfo.remark = "This is a default server comment";
	  	if (smbglobals.log.fd < 0)
	- 		if (client)
	+ 		if (client){
	  			smbglobals.log.fd = create("client.log", OWRITE|OTRUNC, 0666);
	- 		else
	- 			smbglobals.log.fd = create("aquarela.log", OWRITE|OTRUNC, 0666);
	+ 		}
	+ 		else{
	+ 			if (access("/sys/log/aquarela", 2) == 0)
	+ 				smbglobals.log.fd = open("/sys/log/aquarela", OWRITE);
	+ 		}
	  }

Fix error messages.
 [rsc] --rw-rw-r-- M 73506 rsc sys 3799 Jan  7 11:37 sys/src/cmd/fcp.c
	/n/sourcesdump/2006/0107/plan9/sys/src/cmd/fcp.c:44,50 - 
	/n/sourcesdump/2006/0108/plan9/sys/src/cmd/fcp.c:44,50
	  	if(dirb!=nil && (dirb->mode&DMDIR))
	  		todir=1;
	  	if(argc>2 && !todir){
	- 		fprint(2, "cp: %s not a directory\n", argv[argc-1]);
	+ 		fprint(2, "fcp: %s not a directory\n", argv[argc-1]);
	  		exits("bad usage");
	  	}
	  	for(i=0; i<argc-1; i++)
	/n/sourcesdump/2006/0107/plan9/sys/src/cmd/fcp.c:73,79 - 
	/n/sourcesdump/2006/0108/plan9/sys/src/cmd/fcp.c:73,79
	  	if(b->qid.vers==a->qid.vers)
	  	if(b->dev==a->dev)
	  	if(b->type==a->type){
	- 		fprint(2, "cp: %s and %s are the same file\n", an, bn);
	+ 		fprint(2, "fcp: %s and %s are the same file\n", an, bn);
	  		ret = 1;
	  	}
	  	free(b);
	/n/sourcesdump/2006/0107/plan9/sys/src/cmd/fcp.c:98,110 - 
	/n/sourcesdump/2006/0108/plan9/sys/src/cmd/fcp.c:98,110
	  	}
	  
	  	if((dirb=dirstat(from))==nil){
	- 		fprint(2,"cp: can't stat %s: %r\n", from);
	+ 		fprint(2,"fcp: can't stat %s: %r\n", from);
	  		failed = 1;
	  		return;
	  	}
	  	mode = dirb->mode;
	  	if(mode&DMDIR){
	- 		fprint(2, "cp: %s is a directory\n", from);
	+ 		fprint(2, "fcp: %s is a directory\n", from);
	  		free(dirb);
	  		failed = 1;
	  		return;
	/n/sourcesdump/2006/0107/plan9/sys/src/cmd/fcp.c:117,123 - 
	/n/sourcesdump/2006/0108/plan9/sys/src/cmd/fcp.c:117,123
	  	mode &= 0777;
	  	fdf=open(from, OREAD);
	  	if(fdf<0){
	- 		fprint(2, "cp: can't open %s: %r\n", from);
	+ 		fprint(2, "fcp: can't open %s: %r\n", from);
	  		free(dirb);
	  		failed = 1;
	  		return;
	/n/sourcesdump/2006/0107/plan9/sys/src/cmd/fcp.c:124,130 - 
	/n/sourcesdump/2006/0108/plan9/sys/src/cmd/fcp.c:124,130
	  	}
	  	fdt=create(to, OWRITE, mode);
	  	if(fdt<0){
	- 		fprint(2, "cp: can't create %s: %r\n", to);
	+ 		fprint(2, "fcp: can't create %s: %r\n", to);
	  		close(fdf);
	  		free(dirb);
	  		failed = 1;
	/n/sourcesdump/2006/0107/plan9/sys/src/cmd/fcp.c:141,147 - 
	/n/sourcesdump/2006/0108/plan9/sys/src/cmd/fcp.c:141,147
	  		if(gflag)
	  			dirt.gid = dirb->gid;
	  		if(dirfwstat(fdt, &dirt) < 0)
	- 			fprint(2, "cp: warning: can't wstat %s: %r\n", to);
	+ 			fprint(2, "fcp: warning: can't wstat %s: %r\n", to);
	  	}			
	  	free(dirb);
	  	close(fdf);
	/n/sourcesdump/2006/0107/plan9/sys/src/cmd/fcp.c:169,175 - 
	/n/sourcesdump/2006/0108/plan9/sys/src/cmd/fcp.c:169,175
	  		}
	  	}
	  	if(n == 0){
	- 		fprint(2, "cp: rfork: %r\n");
	+ 		fprint(2, "fcp: rfork: %r\n");
	  		failed = 1;
	  		return -1;
	  	}

Return non-negative numbers.
 [rsc] --rw-rw-r-- M 73506 glenda sys 11556 Jan  7 11:35 sys/src/cmd/pic/input.c
	/n/sourcesdump/2006/0107/plan9/sys/src/cmd/pic/input.c:245,251 - 
	/n/sourcesdump/2006/0108/plan9/sys/src/cmd/pic/input.c:245,251
	  		printf(" <%c>", c);
	  	if (ep >= ebuf + sizeof ebuf)
	  		ep = ebuf;
	- 	return *ep++ = c;
	+ 	return *(unsigned char *)ep++ = c;
	  }
	  
	  nextchar(void)