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Netif (Linux): don't use fseek

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Turns out that `fseek` generates two extra syscalls, which causes unnecessary overhead.
This commit is contained in:
李通洲
2024-10-13 21:32:09 +08:00
parent f847a23fb9
commit fbed730dac
1 changed files with 2 additions and 2 deletions
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src/common/netif/netif_linux.c
+2 -2
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@@ -12,8 +12,8 @@ bool ffNetifGetDefaultRouteImpl(char iface[IF_NAMESIZE + 1], uint32_t* ifIndex)
FILE* FF_AUTO_CLOSE_FILE netRoute = fopen("/proc/net/route", "r");
if (!netRoute) return false;
// skip first line #1336
fseek(netRoute, 128, SEEK_SET);
// skip first line
fscanf(netRoute, "%*[^\n]\n");
unsigned long long destination; //, gateway, flags, refCount, use, metric, mask, mtu,
while (fscanf(netRoute, "%" FF_STR(IF_NAMESIZE) "s%llx%*[^\n]", iface, &destination) == 2)