initial code repo

[stor4nfv.git] / src / ceph / src / include / coredumpctl.h

diff --git a/src/ceph/src/include/coredumpctl.h b/src/ceph/src/include/coredumpctl.h
new file mode 100644 (file)
index 0000000..9b0f160
--- /dev/null
+++ b/src/ceph/src/include/coredumpctl.h
@@ -0,0 +1,47 @@
+#pragma once
+
+#ifdef HAVE_SYS_PRCTL_H
+#include <iostream>
+#include <sys/prctl.h>
+#include "common/errno.h"
+
+struct PrCtl {
+  int saved_state = -1;
+  int set_dumpable(int new_state) {
+    int r = prctl(PR_SET_DUMPABLE, new_state);
+    if (r) {
+      r = -errno;
+      std::cerr << "warning: unable to " << (new_state ? "set" : "unset")
+                << " dumpable flag: " << cpp_strerror(r)
+                << std::endl;
+    }
+    return r;
+  }
+  PrCtl(int new_state = 0) {
+    int r = prctl(PR_GET_DUMPABLE);
+    if (r == -1) {
+      r = errno;
+      std::cerr << "warning: unable to get dumpable flag: " << cpp_strerror(r)
+                << std::endl;
+    } else if (r != new_state) {
+      if (!set_dumpable(new_state)) {
+        saved_state = r;
+      }
+    }
+  }
+  ~PrCtl() {
+    if (saved_state < 0) {
+      return;
+    }
+    set_dumpable(saved_state);
+  }
+};
+
+#else
+
+struct PrCtl {
+  // to silence the Wunused-variable warning
+  PrCtl() {}
+};
+
+#endif