//+build ignore #define ACCEPT 0 #define FILTER 1 static __always_inline int filter(__u32 *pid, __u32 *tid) { u64 pid_tgid = bpf_get_current_pid_tgid(); *pid = pid_tgid >> 32; // Ignore ior userland process itself if (*pid == IOR_PID_FILTER) { return FILTER; } *tid = pid_tgid & 0xFFFFFFFF; if (-1 == PID_FILTER || *pid == PID_FILTER) { if (-1 == TID_FILTER || *tid == TID_FILTER) { return ACCEPT; } } return FILTER; }