Initial stab at Venti.

src/cmd/venti/mkroot.c

@@ -0,0 +1,59 @@
+#include "stdinc.h"
+#include "dat.h"
+#include "fns.h"
+
+char *host;
+
+void
+usage(void)
+{
+	fprint(2, "usage: mkroot [-h host] name type score blocksize prev\n");
+	threadexitsall("usage");
+}
+
+void
+threadmain(int argc, char *argv[])
+{
+	uchar score[VtScoreSize];
+	uchar buf[VtRootSize];
+	VtConn *z;
+	VtRoot root;
+
+	ARGBEGIN{
+	case 'h':
+		host = EARGF(usage());
+		break;
+	default:
+		usage();
+		break;
+	}ARGEND
+
+	if(argc != 5)
+		usage();
+
+	fmtinstall('V', vtscorefmt);
+
+	strecpy(root.name, root.name+sizeof root.name, argv[0]);
+	strecpy(root.type, root.type+sizeof root.type, argv[1]);
+	if(vtparsescore(argv[2], strlen(argv[2]), nil, root.score) < 0)
+		sysfatal("bad score '%s'", argv[2]);
+	root.blocksize = atoi(argv[3]);
+	if(vtparsescore(argv[4], strlen(argv[4]), nil, root.prev) < 0)
+		sysfatal("bad score '%s'", argv[4]);
+	vtrootpack(&root, buf);
+
+	z = vtdial(host);
+	if(z == nil)
+		sysfatal("could not connect to server: %r");
+
+	if(vtconnect(z) < 0)
+		sysfatal("vtconnect: %r");
+
+	if(vtwrite(z, score, VtRootType, buf, VtRootSize) < 0)
+		sysfatal("vtwrite: %r");
+	if(vtsync(z) < 0)
+		sysfatal("vtsync: %r");
+	vthangup(z);
+	print("%V\n", score);
+	threadexitsall(0);
+}