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