Add a handler for seccomp crashes

When seccomp causes a crash, use a SIGSYS action and handle it to print
out an error. Most functions are not allowed at that point (no buffered
output, no ?printf functions, no abort, ...), so the implementation is
as minimal as possible.
Print out a message with the syscall number and exit the process (all
threads).

1 files changed, 3 insertions, 0 deletions

diff --git a/openbsd_priv.c b/openbsd_priv.c
index 1e26ece..46e0883 100644
--- a/openbsd_priv.c
+++ b/openbsd_priv.c
@@ -26,3 +26,6 @@ void drop_privileges() {
        }
      }
 }
+
+void drop_worker_privileges(void) {
+}