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add ioctl checks

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This commit is contained in:
smayzy 2026-04-11 15:31:15 +02:00
parent 1993006247
commit 7dad14fa4e
1 changed files with 4 additions and 1 deletions
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5
src/main.c
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@ -397,7 +397,10 @@ int main(int argc, char **argv) {
} }
fcntl(soc, F_SETFL, O_NONBLOCK); fcntl(soc, F_SETFL, O_NONBLOCK);
strcpy(ifr.ifr_name, "can0"); strcpy(ifr.ifr_name, "can0");
ioctl(soc, SIOCGIFINDEX, &ifr); if (ioctl(soc, SIOCGIFINDEX, &ifr) < 0) {
perror("ioctl error");
return 1;
}
addr.can_family = AF_CAN; addr.can_family = AF_CAN;
addr.can_ifindex = ifr.ifr_ifindex; addr.can_ifindex = ifr.ifr_ifindex;
if (bind(soc, (struct sockaddr *)&addr, sizeof(addr)) < 0) { if (bind(soc, (struct sockaddr *)&addr, sizeof(addr)) < 0) {