mirror of
https://github.com/apache/nuttx-apps.git
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net: fix compiler warning
sixlowpan_assocresp.c: In function ‘sixlowpan_assoc_resp’:
sixlowpan_assocresp.c:48:3: warning: ‘strncpy’ specified bound 16 equals destination size [-Wstringop-truncation]
48 | strncpy(arg.ifr_name, ifname, IFNAMSIZ);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Signed-off-by: chao an <anchao@xiaomi.com>
This commit is contained in:
chao an
Xiang Xiao
parent
f102f6f405
commit
8ad4ae5508
28 changed files with 182 additions and 130 deletions
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@ -1,5 +1,26 @@
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/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
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/*
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/****************************************************************************
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* apps/canutils/cansend/cansend.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) *
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*
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* cansend.c - send CAN-frames via CAN_RAW sockets
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*
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* Copyright (c) 2002-2007 Volkswagen Group Electronic Research
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@ -40,7 +61,11 @@
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*
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* Send feedback to <linux-can@vger.kernel.org>
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*
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*/
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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@ -58,112 +83,141 @@
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static void print_usage_send(char *prg)
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{
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fprintf(stderr, "%s - send CAN-frames via CAN_RAW sockets.\n", prg);
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fprintf(stderr, "\nUsage: %s <device> <can_frame>.\n", prg);
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fprintf(stderr, "\n<can_frame>:\n");
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fprintf(stderr, " <can_id>#{data} for 'classic' CAN 2.0 data frames\n");
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fprintf(stderr, " <can_id>#R{len} for 'classic' CAN 2.0 data frames\n");
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fprintf(stderr, " <can_id>##<flags>{data} for CAN FD frames\n\n");
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fprintf(stderr, "<can_id>:\n"
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" 3 (SFF) or 8 (EFF) hex chars\n");
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fprintf(stderr, "{data}:\n"
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" 0..8 (0..64 CAN FD) ASCII hex-values (optionally separated by '.')\n");
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fprintf(stderr, "{len}:\n"
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" an optional 0..8 value as RTR frames can contain a valid dlc field\n");
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fprintf(stderr, "<flags>:\n"
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" a single ASCII Hex value (0 .. F) which defines canfd_frame.flags\n\n");
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fprintf(stderr, "Examples:\n");
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fprintf(stderr, " 5A1#11.2233.44556677.88 / 123#DEADBEEF / 5AA# / 123##1 / 213##311223344 /\n"
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" 1F334455#1122334455667788 / 123#R / 00000123#R3\n\n");
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fprintf(stderr, "%s - send CAN-frames via CAN_RAW sockets.\n", prg);
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fprintf(stderr, "\nUsage: %s <device> <can_frame>.\n", prg);
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fprintf(stderr, "\n<can_frame>:\n");
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fprintf(stderr,
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" <can_id>#{data} ""for 'classic' CAN 2.0 data frames\n");
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fprintf(stderr,
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" <can_id>#R{len} for 'classic' CAN 2.0 data frames\n");
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fprintf(stderr,
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" <can_id>##<flags>{data} for CAN FD frames\n\n");
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fprintf(stderr, "<can_id>:\n"
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" 3 (SFF) or 8 (EFF) hex chars\n");
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fprintf(stderr, "{data}:\n"
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" 0..8 (0..64 CAN FD) ASCII hex-values "
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"(optionally separated by '.')\n");
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fprintf(stderr, "{len}:\n"
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" an optional 0..8 value "
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"as RTR frames can contain a valid dlc field\n");
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fprintf(stderr, "<flags>:\n"
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" a single ASCII Hex value (0 .. F) "
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"which defines canfd_frame.flags\n\n");
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fprintf(stderr, "Examples:\n");
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fprintf(stderr, " 5A1#11.2233.44556677.88 / 123#DEADBEEF / "
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"5AA# / 123##1 / 213##311223344 /\n"
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" 1F334455#1122334455667788 / 123#R / 00000123#R3\n\n");
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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int main(int argc, char **argv)
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{
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int s; /* can raw socket */
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int required_mtu;
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int mtu;
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int enable_canfd = 1;
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struct sockaddr_can addr;
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struct canfd_frame frame;
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struct ifreq ifr;
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/* can raw socket */
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/* check command line options */
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if (argc != 3) {
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print_usage_send(argv[0]);
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return 1;
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}
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int s;
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int required_mtu;
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int mtu;
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int enable_canfd = 1;
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struct sockaddr_can addr;
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struct canfd_frame frame;
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struct ifreq ifr;
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/* parse CAN frame */
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required_mtu = parse_canframe(argv[2], &frame);
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if (!required_mtu){
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fprintf(stderr, "\nWrong CAN-frame format!\n\n");
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print_usage_send(argv[0]);
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return 1;
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}
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/* check command line options */
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/* open socket */
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if ((s = socket(PF_CAN, SOCK_RAW, CAN_RAW)) < 0) {
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perror("socket");
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return 1;
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}
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if (argc != 3)
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{
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print_usage_send(argv[0]);
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return 1;
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}
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strncpy(ifr.ifr_name, argv[1], IFNAMSIZ - 1);
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ifr.ifr_name[IFNAMSIZ - 1] = '\0';
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ifr.ifr_ifindex = if_nametoindex(ifr.ifr_name);
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if (!ifr.ifr_ifindex) {
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perror("if_nametoindex");
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return 1;
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}
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/* parse CAN frame */
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memset(&addr, 0, sizeof(addr));
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addr.can_family = AF_CAN;
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addr.can_ifindex = ifr.ifr_ifindex;
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required_mtu = parse_canframe(argv[2], &frame);
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if (!required_mtu)
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{
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fprintf(stderr, "\nWrong CAN-frame format!\n\n");
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print_usage_send(argv[0]);
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return 1;
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}
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if (required_mtu > (int)CAN_MTU) {
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/* open socket */
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/* check if the frame fits into the CAN netdevice */
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if (ioctl(s, SIOCGIFMTU, &ifr) < 0) {
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perror("SIOCGIFMTU");
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return 1;
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}
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mtu = ifr.ifr_mtu;
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if ((s = socket(PF_CAN, SOCK_RAW, CAN_RAW)) < 0)
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{
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perror("socket");
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return 1;
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}
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if (mtu != CANFD_MTU) {
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printf("CAN interface is not CAN FD capable - sorry.\n");
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return 1;
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}
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strlcpy(ifr.ifr_name, argv[1], IFNAMSIZ);
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ifr.ifr_ifindex = if_nametoindex(ifr.ifr_name);
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if (!ifr.ifr_ifindex)
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{
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perror("if_nametoindex");
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return 1;
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}
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/* interface is ok - try to switch the socket into CAN FD mode */
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if (setsockopt(s, SOL_CAN_RAW, CAN_RAW_FD_FRAMES,
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&enable_canfd, sizeof(enable_canfd))){
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printf("error when enabling CAN FD support\n");
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return 1;
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}
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memset(&addr, 0, sizeof(addr));
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addr.can_family = AF_CAN;
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addr.can_ifindex = ifr.ifr_ifindex;
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/* ensure discrete CAN FD length values 0..8, 12, 16, 20, 24, 32, 64 */
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frame.len = can_dlc2len(can_len2dlc(frame.len));
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}
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if (required_mtu > (int)CAN_MTU)
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{
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/* check if the frame fits into the CAN netdevice */
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/* disable default receive filter on this RAW socket */
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/* This is obsolete as we do not read from the socket at all, but for */
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/* this reason we can remove the receive list in the Kernel to save a */
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/* little (really a very little!) CPU usage. */
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setsockopt(s, SOL_CAN_RAW, CAN_RAW_FILTER, NULL, 0);
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if (ioctl(s, SIOCGIFMTU, &ifr) < 0)
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{
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perror("SIOCGIFMTU");
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return 1;
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}
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if (bind(s, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
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perror("bind");
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return 1;
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}
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mtu = ifr.ifr_mtu;
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/* send frame */
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if (write(s, &frame, required_mtu) != required_mtu) {
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perror("write");
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return 1;
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}
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if (mtu != CANFD_MTU)
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{
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printf("CAN interface is not CAN FD capable - sorry.\n");
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return 1;
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}
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close(s);
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/* interface is ok - try to switch the socket into CAN FD mode */
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return 0;
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if (setsockopt(s, SOL_CAN_RAW, CAN_RAW_FD_FRAMES,
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&enable_canfd, sizeof(enable_canfd)))
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{
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printf("error when enabling CAN FD support\n");
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return 1;
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}
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/* ensure discrete CAN FD length values 0..8, 12, 16, 20, 24, 32, 64 */
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frame.len = can_dlc2len(can_len2dlc(frame.len));
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}
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/* disable default receive filter on this RAW socket
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* This is obsolete as we do not read from the socket at all, but for
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* this reason we can remove the receive list in the Kernel to save a
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* little (really a very little!) CPU usage.
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*/
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setsockopt(s, SOL_CAN_RAW, CAN_RAW_FILTER, NULL, 0);
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if (bind(s, (struct sockaddr *)&addr, sizeof(addr)) < 0)
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{
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perror("bind");
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return 1;
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}
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/* send frame */
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if (write(s, &frame, required_mtu) != required_mtu)
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{
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perror("write");
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return 1;
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}
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close(s);
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return 0;
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}
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@ -361,8 +361,7 @@ int main(int argc, char *argv[])
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/* set the device name */
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strncpy(ifr.ifr_name, argv[1], IFNAMSIZ - 1);
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ifr.ifr_name[IFNAMSIZ - 1] = '\0';
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strlcpy(ifr.ifr_name, argv[1], IFNAMSIZ);
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ifr.ifr_ifru.ifru_can_data.arbi_bitrate =
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canspeed / 1000; /* Convert bit/s to kbit/s */
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