Promote the old installer/livecd specific tools to normal tools under /sys/src/cmd. Where similar common tools already existed, I kept them.

sys/src/cmd/touchfs.c

@@ -0,0 +1,66 @@
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+
+void
+Bpass(Biobuf *bin, Biobuf *bout, int n)
+{
+	char buf[8192];
+	int m;
+
+	while(n > 0) {
+		m = sizeof buf;
+		if(m > n)
+			m = n;
+		m = Bread(bin, buf, m);
+		if(m <= 0) {
+			fprint(2, "corrupt archive\n");
+			exits("notdone");
+		}
+		Bwrite(bout, buf, m);
+		n -= m;
+	}
+	assert(n == 0);
+}
+
+void
+main(int argc, char **argv)
+{
+	char *p, *f[10];
+	Biobuf bin, bout;
+	int nf;
+	ulong d, size;
+
+	if(argc != 2) {
+		fprint(2, "usage: cat mkfs-archive | touchfs date (in seconds)\n");
+		exits("usage");
+	}
+
+	d = strtoul(argv[1], 0, 0);
+
+	quotefmtinstall();
+	Binit(&bin, 0, OREAD);
+	Binit(&bout, 1, OWRITE);
+
+	while(p = Brdline(&bin, '\n')) {
+		p[Blinelen(&bin)-1] = '\0';
+		if(strcmp(p, "end of archive") == 0) {
+			Bprint(&bout, "end of archive\n");
+			exits(0);
+		}
+
+		nf = tokenize(p, f, nelem(f));
+		if(nf != 6) {
+			fprint(2, "corrupt archive\n");
+			exits("notdone");
+		}
+
+		Bprint(&bout, "%q %q %q %q %lud %q\n",
+			f[0], f[1], f[2], f[3], d, f[5]);
+
+		size = strtoul(f[5], 0, 0);
+		Bpass(&bin, &bout, size);
+	}
+	fprint(2, "premature end of archive\n");
+	exits("notdone");
+}