--- a/rvinterf/etmsync/fsbasics.c	Mon Feb 24 04:41:57 2014 +0000
+++ b/rvinterf/etmsync/fsbasics.c	Mon Feb 24 07:27:37 2014 +0000
@@ -5,9 +5,12 @@
 #include <sys/types.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
+#include <strings.h>
 #include "etm.h"
 #include "ffs.h"
 #include "tmffs2.h"
+#include "limits.h"
 #include "exitcodes.h"
 
 extern u_char rvi_msg[];
@@ -34,3 +37,96 @@
 	printf("FFS2 version: %02X.%02X\n", rvi_msg[5], rvi_msg[4]);
 	return(0);
 }
+
+do_opendir(pathname, statertn, countrtn)
+	char *pathname;
+	u_char *statertn;
+	int *countrtn;
+{
+	u_char cmdpkt[MAX_PKT_TO_TARGET], *dp;
+	int rc, slen;
+
+	slen = strlen(pathname);
+	if (slen >= TMFFS_STRING_SIZE) {
+		printf("error: pathname arg exceeds string length limit\n");
+		return(ERROR_USAGE);
+	}
+	dp = cmdpkt + 1;
+	*dp++ = ETM_FFS2;
+	*dp++ = TMFFS_OPENDIR;
+	*dp++ = slen + 1;
+	strcpy(dp, pathname);
+	dp += slen + 1;
+	rc = etm_pkt_exch(cmdpkt, dp - cmdpkt - 1);
+	if (rc)
+		return(rc);
+	if (rvi_msg[3]) {
+		printf("opendir: FFS error %d\n", rvi_msg[3]);
+		return(ERROR_TARGET);
+	}
+	if (rvi_msg_len != 11 || rvi_msg[5] != 4) {
+		printf("error: opendir response has wrong length\n");
+		return(ERROR_TARGET);
+	}
+	*countrtn = rvi_msg[4];
+	bcopy(rvi_msg + 6, statertn, 4);
+	return(0);
+}
+
+do_readdir(state, namebuf)
+	u_char *state;
+	char *namebuf;
+{
+	u_char cmdpkt[10];
+	int rc, slen;
+
+	cmdpkt[1] = ETM_FFS2;
+	cmdpkt[2] = TMFFS_READDIR;
+	cmdpkt[3] = 4;
+	bcopy(state, cmdpkt+4, 4);
+	cmdpkt[8] = TMFFS_STRING_SIZE;
+	rc = etm_pkt_exch(cmdpkt, 8);
+	if (rc)
+		return(rc);
+	if (rvi_msg[3]) {
+		printf("readdir: FFS error %d\n", rvi_msg[3]);
+		return(ERROR_TARGET);
+	}
+	if (rvi_msg_len < 14) {
+malformed:	printf("error: readdir response is malformed\n");
+		return(ERROR_TARGET);
+	}
+	if (rvi_msg[5] != 4)
+		goto malformed;
+	slen = rvi_msg[10];
+	if (slen < 2 || slen > TMFFS_STRING_SIZE)
+		goto malformed;
+	if (rvi_msg[11 + slen - 1])	/* must be terminating NUL */
+		goto malformed;
+	bcopy(rvi_msg + 6, state, 4);
+	strcpy(namebuf, rvi_msg + 11);
+	return(0);
+}
+
+cmd_ls(argc, argv)
+	char **argv;
+{
+	u_char state[4];
+	char namebuf[TMFFS_STRING_SIZE];
+	int nument, i, rc;
+
+	rc = do_opendir(argv[1], state, &nument);
+	if (rc)
+		return(rc);
+	if (!nument) {
+		printf("<empty dir>\n");
+		return(0);
+	}
+	for (i = 0; i < nument; i++) {
+		rc = do_readdir(state, namebuf);
+		if (rc)
+			return(rc);
+		printf("%s\n", namebuf);
+	}
+	return(0);
+}