block_on_input(): allow a NULL sigmask

5 years ago · d500bf166e
parent f407d7b114
commit d500bf166e
1 changed files with 5 additions and 0 deletions
--- a/src/lib/input.c
+++ b/src/lib/input.c
@ -163,6 +163,11 @@ block_on_input(FILE* fp, const struct timespec* ts, sigset_t* sigmask){
    .events = POLLIN | POLLRDHUP,
    .revents = 0,
  };
+  sigset_t scratchmask;
+  if(!sigmask){
+    sigemptyset(&scratchmask);
+    sigmask = &scratchmask;
+  }
  sigdelset(sigmask, SIGWINCH);
  sigdelset(sigmask, SIGINT);
  sigdelset(sigmask, SIGQUIT);