1{
2global:
3  EnsureFrontOfChain;
4  AddSpecialSignalHandlerFn;
5  RemoveSpecialSignalHandlerFn;
6  SkipAddSignalHandler;
7  sigaction;
8  sigaction64;
9  signal;
10  sigprocmask;
11  sigprocmask64;
12local:
13  *;
14};
15