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tapif: fix strncpy

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Adjust the strncpy() call in tapif.c to how this is coded
in other strncpy() invocations. Also gcc warns about this.

See patch #10142
This commit is contained in:
Florian La Roche 2021-11-22 08:34:22 +01:00 committed by Simon Goldschmidt
parent 7c3aab2ea2
commit 34e435c786
1 changed files with 2 additions and 2 deletions
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4
contrib/ports/unix/port/netif/tapif.c
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@ -153,9 +153,9 @@ low_level_init(struct netif *netif)
memset(&ifr, 0, sizeof(ifr)); memset(&ifr, 0, sizeof(ifr));
if (preconfigured_tapif) { if (preconfigured_tapif) {
strncpy(ifr.ifr_name, preconfigured_tapif, sizeof(ifr.ifr_name)); strncpy(ifr.ifr_name, preconfigured_tapif, sizeof(ifr.ifr_name) - 1);
} else { } else {
strncpy(ifr.ifr_name, DEVTAP_DEFAULT_IF, sizeof(ifr.ifr_name)); strncpy(ifr.ifr_name, DEVTAP_DEFAULT_IF, sizeof(ifr.ifr_name) - 1);
} }
ifr.ifr_name[sizeof(ifr.ifr_name)-1] = 0; /* ensure \0 termination */ ifr.ifr_name[sizeof(ifr.ifr_name)-1] = 0; /* ensure \0 termination */