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106 lines
3.5 KiB
106 lines
3.5 KiB
/* |
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* Check decoding of prctl PR_GET_SECUREBITS/PR_SET_SECUREBITS operations. |
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* |
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* Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com> |
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* Copyright (c) 2016 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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#include <asm/unistd.h> |
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#include <linux/prctl.h> |
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#if defined __NR_prctl && defined PR_GET_SECUREBITS && defined PR_SET_SECUREBITS |
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# include <stdio.h> |
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# include <unistd.h> |
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# include "xlat.h" |
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# include "xlat/secbits.h" |
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static const char *errstr; |
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static long |
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prctl(kernel_ulong_t arg1, kernel_ulong_t arg2) |
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{ |
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static const kernel_ulong_t bogus_arg = |
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(kernel_ulong_t) 0xdeadbeefbadc0dedULL; |
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long rc = syscall(__NR_prctl, arg1, arg2, bogus_arg); |
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errstr = sprintrc(rc); |
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return rc; |
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} |
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int |
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main(void) |
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{ |
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static const kernel_ulong_t bits1 = |
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(kernel_ulong_t) 0xdeadc0defacebeefULL; |
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static const kernel_ulong_t bits2 = |
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(kernel_ulong_t) 0xbadc0ded00000000ULL; |
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static const kernel_ulong_t bits3 = |
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(kernel_ulong_t) 0xffULL; |
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prctl(PR_SET_SECUREBITS, 0); |
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printf("prctl(PR_SET_SECUREBITS, 0) = %s\n", errstr); |
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prctl(PR_SET_SECUREBITS, bits1); |
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printf("prctl(PR_SET_SECUREBITS, SECBIT_NOROOT|SECBIT_NOROOT_LOCKED|" |
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"SECBIT_NO_SETUID_FIXUP|SECBIT_NO_SETUID_FIXUP_LOCKED|" |
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"SECBIT_KEEP_CAPS_LOCKED|SECBIT_NO_CAP_AMBIENT_RAISE|" |
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"SECBIT_NO_CAP_AMBIENT_RAISE_LOCKED|%#llx) = %s\n", |
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(unsigned long long) bits1 & ~0xffULL, errstr); |
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if (bits2) { |
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prctl(PR_SET_SECUREBITS, bits2); |
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printf("prctl(PR_SET_SECUREBITS, %#llx /* SECBIT_??? */)" |
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" = %s\n", (unsigned long long) bits2, errstr); |
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} |
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prctl(PR_SET_SECUREBITS, bits3); |
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printf("prctl(PR_SET_SECUREBITS, SECBIT_NOROOT|SECBIT_NOROOT_LOCKED|" |
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"SECBIT_NO_SETUID_FIXUP|SECBIT_NO_SETUID_FIXUP_LOCKED|" |
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"SECBIT_KEEP_CAPS|SECBIT_KEEP_CAPS_LOCKED|" |
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"SECBIT_NO_CAP_AMBIENT_RAISE|SECBIT_NO_CAP_AMBIENT_RAISE_LOCKED)" |
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" = %s\n", errstr); |
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long rc = prctl(PR_GET_SECUREBITS, bits1); |
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printf("prctl(PR_GET_SECUREBITS) = %s", errstr); |
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if (rc > 0) { |
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printf(" ("); |
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printflags(secbits, rc, NULL); |
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printf(")"); |
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} |
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puts(""); |
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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("__NR_prctl && PR_GET_SECUREBITS && PR_SET_SECUREBITS") |
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#endif
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