diff options
| -rw-r--r-- | components/netspeeds.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/components/netspeeds.c b/components/netspeeds.c index 9315fef..c846a2c 100644 --- a/components/netspeeds.c +++ b/components/netspeeds.c @@ -64,6 +64,7 @@ uint64_t rxbytes = 0; const char *rxs; extern const unsigned int interval; + char if_ok = 0; if (getifaddrs(&ifal) == -1) { warn("getifaddrs failed"); @@ -72,10 +73,14 @@ for (ifa = ifal; ifa; ifa = ifa->ifa_next) { if (!strcmp(ifa->ifa_name, interface) && (ifd = (struct if_data *)ifa->ifa_data)) { - rxbytes += ifd->ifi_ibytes; + rxbytes += ifd->ifi_ibytes, if_ok = 1; } } freeifaddrs(ifal); + if (!if_ok) { + warn("reading 'if_data' failed"); + return NULL; + } rxs = oldrxbytes ? fmt_scaled((rxbytes - oldrxbytes) / interval * 1000) : NULL; @@ -91,6 +96,7 @@ uint64_t txbytes = 0; const char *txs; extern const unsigned int interval; + char if_ok = 0; if (getifaddrs(&ifal) == -1) { warn("getifaddrs failed"); @@ -99,10 +105,14 @@ for (ifa = ifal; ifa; ifa = ifa->ifa_next) { if (!strcmp(ifa->ifa_name, interface) && (ifd = (struct if_data *)ifa->ifa_data)) { - txbytes += ifd->ifi_obytes; + txbytes += ifd->ifi_obytes, if_ok = 1; } } freeifaddrs(ifal); + if (!if_ok) { + warn("reading 'if_data' failed"); + return NULL; + } txs = oldtxbytes ? fmt_scaled((txbytes - oldtxbytes) / interval * 1000) : NULL; |