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121 lines
3.4 KiB
121 lines
3.4 KiB
4 months ago
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/*
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* Check decoding of pkey_mprotect syscall.
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*
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* Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com>
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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 "scno.h"
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#ifdef __NR_pkey_mprotect
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# include <stdio.h>
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# include <unistd.h>
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# include <sys/mman.h>
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const char *
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sprintptr(kernel_ulong_t ptr)
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{
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static char buf[sizeof(ptr) * 2 + sizeof("0x")];
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if (ptr)
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snprintf(buf, sizeof(buf), "%#llx", (unsigned long long) ptr);
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else
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return "NULL";
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return buf;
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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 ptrs[] = {
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0,
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(kernel_ulong_t) 0xfacebeef00000000ULL,
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(kernel_ulong_t) 0xbadc0dedda7a1057ULL,
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};
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static const kernel_ulong_t sizes[] = {
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0,
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(kernel_ulong_t) 0xfacebeef00000000ULL,
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(kernel_ulong_t) 0xfedcba9876543210ULL,
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(kernel_ulong_t) 0x123456789abcdef0ULL,
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(kernel_ulong_t) 0xbadc0dedda7a1057ULL,
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};
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static const struct {
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kernel_ulong_t val;
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const char *str;
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} prots[] = {
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{ ARG_STR(PROT_READ) },
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/* For now, only 0x0300001f are used */
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{ (kernel_ulong_t) 0xdeadfeed00ca7500ULL,
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sizeof(kernel_ulong_t) > sizeof(int) ?
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"0xdeadfeed00ca7500 /* PROT_??? */" :
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"0xca7500 /* PROT_??? */" },
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{ ARG_STR(PROT_READ|PROT_WRITE|0xface00) },
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};
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static const kernel_ulong_t pkeys[] = {
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0,
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-1LL,
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(kernel_ulong_t) 0xface1e55,
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(kernel_ulong_t) 0xbadc0ded00000001,
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};
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long rc;
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unsigned int i;
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unsigned int j;
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unsigned int k;
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unsigned int l;
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for (i = 0; i < ARRAY_SIZE(ptrs); i++) {
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for (j = 0; j < ARRAY_SIZE(sizes); j++) {
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for (k = 0; k < ARRAY_SIZE(prots); k++) {
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for (l = 0; l < ARRAY_SIZE(pkeys); l++) {
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rc = syscall(__NR_pkey_mprotect,
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ptrs[i], sizes[j],
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prots[k].val, pkeys[l]);
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printf("pkey_mprotect(%s, %llu, %s, %d)"
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" = %s\n",
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sprintptr(ptrs[i]),
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(unsigned long long) sizes[j],
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prots[k].str, (int) pkeys[l],
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sprintrc(rc));
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}
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}
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}
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}
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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_pkey_mprotect");
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#endif
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