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Revert "cangen: use if_nametoindex() to avoid overflows"

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This reverts commit 1f96d674c0.

Link: https://github.com/linux-can/can-utils/pull/396
Link: https://github.com/linux-can/can-utils/commit/1f96d674c0cb7b60ee315981f12a7feb94829697#commitcomment-97455025
This commit is contained in:
Marc Kleine-Budde
2023-01-20 09:58:44 +01:00
committed by Oliver Hartkopp
parent 5aa72c5e9e
commit 77ec9b3c2d
1 changed files with 5 additions and 3 deletions
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cangen.c
+5 -3
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@@ -608,11 +608,13 @@ int main(int argc, char **argv)
} }
addr.can_family = AF_CAN; addr.can_family = AF_CAN;
addr.can_ifindex = if_nametoindex(argv[optind]);
if (!addr.can_ifindex) { strcpy(ifr.ifr_name, argv[optind]);
perror("if_nametoindex"); if (ioctl(s, SIOCGIFINDEX, &ifr) < 0) {
perror("SIOCGIFINDEX");
return 1; return 1;
} }
addr.can_ifindex = ifr.ifr_ifindex;
/* /*
* disable default receive filter on this RAW socket * disable default receive filter on this RAW socket