/*
 * Commands for experimenting with FFS symlinks
 */

#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 "ffslimits.h"
#include "localtypes.h"
#include "localstruct.h"
#include "exitcodes.h"

extern u_char rvi_msg[];
extern int rvi_msg_len;

do_symlink(target, realobj)
	char *target, *realobj;
{
	u_char cmdpkt[MAX_PKT_TO_TARGET], *dp;
	int rc, targlen, reallen;

	reallen = strlen(realobj);
	if (reallen >= TMFFS_STRING_SIZE) {
		printf("error: pathname arg exceeds string length limit\n");
		return(ERROR_USAGE);
	}
	targlen = strlen(target);
	if (3 + (reallen+2) + (targlen+2) + 1 > MAX_PKT_TO_TARGET) {
		printf("error: symlink request fails to fit into packet\n");
		return(ERROR_USAGE);
	}
	dp = cmdpkt + 1;
	*dp++ = ETM_FFS2;
	*dp++ = TMFFS_SYMLINK;
	*dp++ = reallen + 1;
	strcpy(dp, realobj);
	dp += reallen + 1;
	*dp++ = targlen + 1;
	strcpy(dp, target);
	dp += targlen + 1;
	rc = etm_pkt_exch(cmdpkt, dp - cmdpkt - 1);
	if (rc)
		return(rc);
	if (rvi_msg_len != 5) {
		printf("error: TMFFS_SYMLINK response has wrong length\n");
		return(ERROR_TARGET);
	}
	if (rvi_msg[3]) {
		report_ffs_err("symlink", rvi_msg[3]);
		return(ERROR_TARGET);
	}
	return(0);
}

cmd_symlink(argc, argv)
	char **argv;
{
	return do_symlink(argv[1], argv[2]);
}