rgw: set dumpable flag after setuid post ff0e521

ff0e521 resolved the issue for the other daemons but not for rgw since
it calls setuid (via civetweb) after the new code sets PR_SET_DUMPABLE.
Add another prctl call before wait_shutdown.

Fixes: http://tracker.ceph.com/issues/19089
Signed-off-by: Brad Hubbard <bhubbard@redhat.com>

diff --git a/src/rgw/rgw_main.cc b/src/rgw/rgw_main.cc
index 5bd734891597868aeb26fe7dc7ebc049148ec6ff..2a400ec4fb3093bda5098e0b661ef4fc1ac19bee 100644 (file)
--- a/src/rgw/rgw_main.cc
+++ b/src/rgw/rgw_main.cc
@@ -64,6 +64,10 @@
 #include "include/types.h"
 #include "common/BackTrace.h"
 
+#ifdef HAVE_SYS_PRCTL_H
+#include <sys/prctl.h>
+#endif
+
 #define dout_subsys ceph_subsys_rgw
 
 using namespace std;
@@ -532,6 +536,12 @@ int main(int argc, const char **argv)
   realm_watcher.add_watcher(RGWRealmNotify::Reload, reloader);
   realm_watcher.add_watcher(RGWRealmNotify::ZonesNeedPeriod, pusher);
 
+#if defined(HAVE_SYS_PRCTL_H)
+  if (prctl(PR_SET_DUMPABLE, 1) == -1) {
+    cerr << "warning: unable to set dumpable flag: " << cpp_strerror(errno) << std::endl;
+  }
+#endif
+
   wait_shutdown();
 
   derr << "shutting down" << dendl;