Make child processes exit when parent dies

The child processes call prctl() and when their parent process is
killed, they are sent SIGTERM using prctl. This is currently
Linux-specific, for non-Linuxes, a similar effect is achieved by
catching a set of common termination signals and sending SIGTERM to the
process group.

2 files changed, 12 insertions, 0 deletions

diff --git a/server/providers/data_provider.c b/server/providers/data_provider.c
index b9529254..f0ecd30b 100644
--- a/server/providers/data_provider.c
+++ b/server/providers/data_provider.c
@@ -1088,6 +1088,12 @@ int main(int argc, const char *argv[])
     ret = server_setup("sssd[dp]", 0, DP_CONF_ENTRY, &main_ctx);
     if (ret != EOK) return 2;
 
+    ret = die_if_parent_died();
+    if (ret != EOK) {
+        /* This is not fatal, don't return */
+        DEBUG(2, ("Could not set up to exit when parent process does\n"));
+    }
+
     ret = dp_process_init(main_ctx,
                            main_ctx->event_ctx,
                            main_ctx->confdb_ctx);
diff --git a/server/providers/data_provider_be.c b/server/providers/data_provider_be.c
index c93c4531..49885edc 100644
--- a/server/providers/data_provider_be.c
+++ b/server/providers/data_provider_be.c
@@ -1109,6 +1109,12 @@ int main(int argc, const char *argv[])
         return 2;
     }
 
+    ret = die_if_parent_died();
+    if (ret != EOK) {
+        /* This is not fatal, don't return */
+        DEBUG(2, ("Could not set up to exit when parent process does\n"));
+    }
+
     ret = be_process_init(main_ctx,
                           be_name, be_domain,
                           main_ctx->event_ctx,