+/*
+ * Force legacy printpath/umovestr using PR_SET_DUMPABLE.
+ *
+ * Copyright (c) 2017 Dmitry V. Levin <ldv@altlinux.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "tests.h"
+
+#ifdef HAVE_PRCTL
+# include <sys/prctl.h>
+#endif
+
+#if defined HAVE_PRCTL && defined PR_SET_DUMPABLE
+
+# include <stdio.h>
+# include <unistd.h>
+
+# include "test_ucopy.h"
+
+int
+main(void)
+{
+ if (!test_process_vm_readv())
+ perror_msg_and_skip("process_vm_readv");
+
+ /*
+ * Clearing dumpable flag disallows process_vm_readv.
+ * If the kernel does not contain commit
+ * 84d77d3f06e7e8dea057d10e8ec77ad71f721be3, then
+ * PTRACE_PEEKDATA remains allowed.
+ */
+ if (prctl(PR_SET_DUMPABLE, 0))
+ perror_msg_and_skip("PR_SET_DUMPABLE 0");
+
+ if (!test_ptrace_peekdata())
+ perror_msg_and_skip("PTRACE_PEEKDATA");
+
+ test_printstrn(DEFAULT_STRLEN);
+
+ puts("+++ exited with 0 +++");
+ return 0;
+}
+
+#else
+
+SKIP_MAIN_UNDEFINED("HAVE_PRCTL && PR_SET_DUMPABLE")
+
+#endif