--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rvinterf/etmsync/fileio.c	Fri Feb 28 05:50:01 2014 +0000
@@ -0,0 +1,112 @@
+/*
+ * FFS2 file descriptor I/O operations
+ */
+
+#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 "localtypes.h"
+#include "localstruct.h"
+#include "exitcodes.h"
+
+extern u_char rvi_msg[];
+extern int rvi_msg_len;
+
+fd_open(pathname, flags, fdrtn)
+	char *pathname;
+	int flags, *fdrtn;
+{
+	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_OPEN;
+	*dp++ = slen + 1;
+	strcpy(dp, pathname);
+	dp += slen + 1;
+	*dp++ = flags;
+	rc = etm_pkt_exch(cmdpkt, dp - cmdpkt - 1);
+	if (rc)
+		return(rc);
+	if (rvi_msg[3]) {
+		printf("open fd: FFS error %d\n", rvi_msg[3]);
+		return(ERROR_TARGET);
+	}
+	if (rvi_msg_len != 6) {
+		printf("error: open fd response has wrong length\n");
+		return(ERROR_TARGET);
+	}
+	*fdrtn = rvi_msg[4];
+	return(0);
+}
+
+fd_read(fd, databuf, rdsize, rdret)
+	u_char *databuf;
+	int fd, rdsize, *rdret;
+{
+	u_char cmdpkt[6];
+	int rc, sz;
+
+	if (rdsize > MAX_READ_DATA) {
+		fprintf(stderr,
+	"BUG: attempt to read more than possible per TMFFS2 protocol\n");
+		exit(ERROR_BUG);
+	}
+	cmdpkt[1] = ETM_FFS2;
+	cmdpkt[2] = TMFFS_READ;
+	cmdpkt[3] = fd;
+	cmdpkt[4] = rdsize;
+	rc = etm_pkt_exch(cmdpkt, 4);
+	if (rc)
+		return(rc);
+	if (rvi_msg[3]) {
+		printf("read fd: FFS error %d\n", rvi_msg[3]);
+		return(ERROR_TARGET);
+	}
+	if (rvi_msg_len < 6) {
+		*rdret = 0;
+		return(0);
+	}
+	sz = rvi_msg[4];
+	if (rvi_msg_len != sz + 6 || sz > rdsize) {
+		printf("error: read fd response has wrong length\n");
+		return(ERROR_TARGET);
+	}
+	bcopy(rvi_msg + 5, databuf, sz);
+	*rdret = sz;
+	return(0);
+}
+
+fd_close(fd)
+{
+	u_char cmdpkt[5];
+	int rc;
+
+	cmdpkt[1] = ETM_FFS2;
+	cmdpkt[2] = TMFFS_CLOSE;
+	cmdpkt[3] = fd;
+	rc = etm_pkt_exch(cmdpkt, 3);
+	if (rc)
+		return(rc);
+	if (rvi_msg[3]) {
+		printf("close fd: FFS error %d\n", rvi_msg[3]);
+		return(ERROR_TARGET);
+	}
+	if (rvi_msg_len != 5) {
+		printf("error: close fd response has wrong length\n");
+		return(ERROR_TARGET);
+	}
+	return(0);
+}