Remove unused function memsize.
 [rsc] --rw-rw-r-- M 383570 glenda sys 10098 Sep  9 11:03 sys/src/cmd/disk/prep/prep.c
	/n/sourcesdump/2005/0909/plan9/sys/src/cmd/disk/prep/prep.c:25,31 - 
	/n/sourcesdump/2005/0910/plan9/sys/src/cmd/disk/prep/prep.c:25,30
	  static int	donvram;
	  
	  static void	autoxpart(Edit*);
	- static vlong	memsize(void);
	  static Part	*mkpart(char*, vlong, vlong, int);
	  static void	rdpart(Edit*);
	  static void	wrpart(Edit*);
	/n/sourcesdump/2005/0909/plan9/sys/src/cmd/disk/prep/prep.c:268,305 - 
	/n/sourcesdump/2005/0910/plan9/sys/src/cmd/disk/prep/prep.c:267,272
	  		if(isfrog[*(uchar*)elem])
	  			return "bad character in name";
	  	return nil;
	- }
	- 
	- /*
	-  *  return memory size in bytes
	-  */
	- static vlong
	- memsize(void)
	- {
	- 	int fd, n, by2pg;
	- 	char *p;
	- 	char buf[128];
	- 	vlong mem;
	- 
	- 	p = getenv("cputype");
	- 	if(p && (strcmp(p, "68020") == 0 || strcmp(p, "alpha") == 0))
	- 		by2pg = 8*1024;
	- 	else
	- 		by2pg = 4*1024;
	- 
	- 	mem = 64*1024*1024;
	- 	fd = open("/dev/swap", OREAD);
	- 	if(fd < 0)
	- 		return mem;
	- 	n = read(fd, buf, sizeof(buf)-1);
	- 	close(fd);
	- 	if(n <= 0)
	- 		return mem;
	- 	buf[n] = 0;
	- 	p = strchr(buf, '/');
	- 	if(p)
	- 		mem = strtoul(p+1, 0, 0) * (vlong)by2pg;
	- 	return mem;
	  }
	  
	  static Part*
 [sys] --rwxrwxr-x M 383570 glenda sys 95831 Sep  9 23:08 386/bin/disk/prep
	/sys/src/cmd/disk/prep/calc.y:yylex1
	/sys/src/cmd/disk/prep/prep.c:autoxpart
	/sys/src/cmd/disk/prep/prep.c:checkfat
	/sys/src/cmd/disk/prep/prep.c:memsize
	/sys/src/cmd/disk/prep/prep.c:rdpart
	/sys/src/cmd/disk/prep/prep.c:restore
	/sys/src/cmd/disk/prep/prep.c:wrpart
	/sys/src/libc/9sys/getenv.c:getenv
	/sys/src/libc/fmt/fmt.c:_fmtinstall
	/sys/src/libc/fmt/sprint.c:sprint
	/sys/src/libc/port/pool.c:blocksetdsize
	/sys/src/libc/port/pool.c:trim
	/sys/src/libc/port/rune.c:chartorune
	/sys/src/libc/port/strtoul.c:strtoul
	/sys/src/libdisk/disk.c:opendisk

Close fdf before removing it, to work around Steve Simon's cifs.
Making spacing more consistent too.
 [rsc] --rw-rw-r-- M 383570 glenda sys 4241 Sep  9 11:01 sys/src/cmd/mv.c
	/n/sourcesdump/2005/0909/plan9/sys/src/cmd/mv.c:37,43 - 
	/n/sourcesdump/2005/0910/plan9/sys/src/cmd/mv.c:37,43
	  	}
	  	failed = 0;
	  	for(i=1; i < argc-1; i++)
	- 		if (mv(argv[i], todir, toelem) < 0)
	+ 		if(mv(argv[i], todir, toelem) < 0)
	  			failed++;
	  	if(failed)
	  		exits("failure");
	/n/sourcesdump/2005/0909/plan9/sys/src/cmd/mv.c:117,135 - 
	/n/sourcesdump/2005/0910/plan9/sys/src/cmd/mv.c:117,134
	  		close(fdf);
	  		return -1;
	  	}
	- 	if ((stat = copy1(fdf, fdt, fromname, toname)) != -1) {
	+ 	stat = copy1(fdf, fdt, fromname, toname);
	+ 	close(fdf);
	+ 	if(stat >= 0){
	  		nulldir(&null);
	  		null.mtime = dirb->mtime;
	  		null.mode = dirb->mode;
	  		dirfwstat(fdt, &null);	/* ignore errors; e.g. user none always fails */
	- 		if (remove(fromname) < 0) {
	+ 		if(remove(fromname) < 0){
	  			fprint(2, "mv: can't remove %s: %r\n", fromname);
	- 			close(fdf);
	- 			close(fdt);
	- 			return -1;
	+ 			stat = -1;
	  		}
	  	}
	- 	close(fdf);
	  	close(fdt);
	  	return stat;
	  }
	/n/sourcesdump/2005/0909/plan9/sys/src/cmd/mv.c:140,158 - 
	/n/sourcesdump/2005/0910/plan9/sys/src/cmd/mv.c:139,157
	  	char buf[8192];
	  	long n, n1;
	  
	- 	for(;;) {
	+ 	for(;;){
	  		n = read(fdf, buf, sizeof buf);
	- 		if(n >= 0) {
	+ 		if(n >= 0){
	  			if(n == 0)
	  				break;
	  			n1 = write(fdt, buf, n);
	- 			if(n1 != n) {
	+ 			if(n1 != n){
	  				fprint(2, "mv: error writing %s: %r\n", to);
	  				return -1;
	  			}
	  		}
	  	}
	- 	if(n < 0) {
	+ 	if(n < 0){
	  		fprint(2, "mv: error reading %s: %r\n", from);
	  		return -1;
	  	}
 [sys] --rwxrwxr-x M 383570 glenda sys 65489 Sep  9 23:08 386/bin/mv
	/sys/src/cmd/mv.c:mv

Zero allocated data structures.
 [rsc] --rw-rw-r-- M 383570 glenda sys 6665 Sep  9 11:04 sys/src/libdisk/disk.c
	/n/sourcesdump/2005/0909/plan9/sys/src/libdisk/disk.c:272,278 - 
	/n/sourcesdump/2005/0910/plan9/sys/src/libdisk/disk.c:272,278
	  	char *p, *q;
	  	Disk *d;
	  
	- 	d = malloc(sizeof(*d));
	+ 	d = mallocz(sizeof(*d), 1);
	  	if(d == nil)
	  		return nil;
	  
	/n/sourcesdump/2005/0909/plan9/sys/src/libdisk/disk.c:347,350 - 
	/n/sourcesdump/2005/0910/plan9/sys/src/libdisk/disk.c:347,349
	  	d->type = Tfile;
	  	return openfile(d);
	  }
	- 
 [rsc] --rw-rw-r-- M 383570 glenda sys 6023 Sep  9 11:04 sys/src/libdisk/scsi.c
	/n/sourcesdump/2005/0909/plan9/sys/src/libdisk/scsi.c:308,320 - 
	/n/sourcesdump/2005/0910/plan9/sys/src/libdisk/scsi.c:308,319
	  	if((p = strdup(buf+8)) == nil)
	  		goto Error;
	  
	- 	s = malloc(sizeof(*s));
	+ 	s = mallocz(sizeof(*s), 1);
	  	if(s == nil) {
	  	Error1:
	  		free(p);
	  		goto Error;
	  	}
	- 	memset(s, 0, sizeof(*s));
	  
	  	s->rawfd = rawfd;
	  	s->inquire = p;
 [sys] --rwxrwxr-x M 383570 glenda sys 161177 Sep  9 23:08 386/bin/cdfs
	/sys/src/libdisk/scsi.c:openscsi
 [sys] --rwxrwxr-x M 383570 glenda sys 103794 Sep  9 23:08 386/bin/disk/fdisk
 [sys] --rwxrwxr-x M 383570 glenda sys 89534 Sep  9 23:08 386/bin/disk/format
 [sys] --rwxrwxr-x M 383570 glenda sys 73689 Sep  9 23:08 386/bin/disk/mbr
	/sys/src/libdisk/disk.c:opendisk
 [sys] --rw-rw-r-- M 383570 glenda sys 42236 Sep  9 23:08 386/lib/libdisk.a