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20 * may be used to endorse or promote products derived from this software
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24 * software may be distributed under the terms of the GNU General
25 * Public License ("GPL") version 2, in which case the provisions of the
26 * GPL apply INSTEAD OF those given above.
28 * The provided data structures and external interfaces from this code
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55 #include <sys/types.h>
56 #include <sys/socket.h>
57 #include <sys/ioctl.h>
61 #include <linux/can.h>
63 extern int optind, opterr, optopt;
66 static int running = 1;
68 void print_usage(char *prg)
70 fprintf(stderr, "Usage: %s [can-interface]\n", prg);
73 void sigterm(int signo)
75 printf("got signal %d\n", signo);
79 int main(int argc, char **argv)
81 int family = PF_CAN, type = SOCK_RAW, proto = CAN_RAW;
83 struct sockaddr_can addr;
85 struct can_frame frame;
89 signal(SIGTERM, sigterm);
90 signal(SIGHUP, sigterm);
92 while ((opt = getopt(argc, argv, "f:t:p:v")) != -1) {
95 family = atoi(optarg);
103 proto = atoi(optarg);
114 fprintf(stderr, "Unknown option %c\n", opt);
119 if (optind == argc) {
120 print_usage(basename(argv[0]));
124 printf("interface = %s, family = %d, type = %d, proto = %d\n",
125 argv[optind], family, type, proto);
126 if ((s = socket(family, type, proto)) < 0) {
131 addr.can_family = family;
132 strcpy(ifr.ifr_name, argv[optind]);
133 ioctl(s, SIOCGIFINDEX, &ifr);
134 addr.can_ifindex = ifr.ifr_ifindex;
136 if (bind(s, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
142 if ((nbytes = read(s, &frame, sizeof(frame))) < 0) {
147 printf("%03X: ", frame.can_id & CAN_EFF_MASK);
148 if (frame.can_id & CAN_RTR_FLAG) {
149 printf("remote request");
151 printf("[%d]", frame.can_dlc);
152 for (i = 0; i < frame.can_dlc; i++) {
153 printf(" %02X", frame.data[i]);
159 write(s, &frame, sizeof(frame));