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>
(cherry picked from commit bc458d39630b599e0e1ca9fe25ad7455fcffdd10)

diff --git a/src/rgw/rgw_main.cc b/src/rgw/rgw_main.cc
index d03fd251f8fe2be520e7e54b456ca8bfc4765c7c..18d09d5a5d9f94df799491d507b308c4076273f3 100644 (file)
--- a/src/rgw/rgw_main.cc
+++ b/src/rgw/rgw_main.cc
@@ -62,6 +62,10 @@
 #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;
@@ -480,6 +484,12 @@ 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;