view rvinterf/asyncshell/poweroff.c @ 965:2969032bdfac

fcup-smsend[mult]: fix buglet in K&R C NULL pointer passing The only 100% safe way to pass a NULL pointer as a function argument in K&R C is to cast 0 to a pointer type; failing to do so may cause mysterious bugs (invalid stack frames or garbage in argument registers) on 64-bit machines. This issue has already been fixed in most of FC host tools, but I just found some missed spots: passing of NULL UDH to PDU encoding functions in fcup-smsend[mult] in the case of single (not concatenated) SMS.
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 01 Sep 2023 07:33:51 +0000
parents e7502631a0f9
children
line wrap: on
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/*
 * fc-shell poweroff and tgtreset commands
 */

#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include "pktmux.h"
#include "etm.h"

send_etm_cmd(buf, len)
	u_char *buf;
{
	int i, c;

	buf[0] = RVT_TM_HEADER;
	c = 0;
	for (i = 1; i <= len; i++)
		c ^= buf[i];
	buf[i] = c;
	send_pkt_to_target(buf, len + 2);
	return 0;
}

cmd_poweroff()
{
	u_char cmdpkt[7];

	cmdpkt[1] = ETM_CORE;
	cmdpkt[2] = TMCORE_OPC_CODEC_WR;
	cmdpkt[3] = 30;		/* VRPCDEV */
	cmdpkt[4] = 0x01;	/* low 8 bits */
	cmdpkt[5] = 0;		/* high 2 bits */
	return send_etm_cmd(cmdpkt, 5);
}

cmd_tgtreset()
{
	u_char cmdpkt[4];

	cmdpkt[1] = ETM_CORE;
	cmdpkt[2] = TMCORE_OPC_RESET;
	return send_etm_cmd(cmdpkt, 2);
}