You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
121 lines
3.4 KiB
121 lines
3.4 KiB
/*
|
|
* Check decoding of pkey_mprotect syscall.
|
|
*
|
|
* Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com>
|
|
* 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"
|
|
#include <asm/unistd.h>
|
|
#include "scno.h"
|
|
|
|
#ifdef __NR_pkey_mprotect
|
|
|
|
# include <stdio.h>
|
|
# include <unistd.h>
|
|
# include <sys/mman.h>
|
|
|
|
const char *
|
|
sprintptr(kernel_ulong_t ptr)
|
|
{
|
|
static char buf[sizeof(ptr) * 2 + sizeof("0x")];
|
|
|
|
if (ptr)
|
|
snprintf(buf, sizeof(buf), "%#llx", (unsigned long long) ptr);
|
|
else
|
|
return "NULL";
|
|
|
|
return buf;
|
|
}
|
|
|
|
int
|
|
main(void)
|
|
{
|
|
static const kernel_ulong_t ptrs[] = {
|
|
0,
|
|
(kernel_ulong_t) 0xfacebeef00000000ULL,
|
|
(kernel_ulong_t) 0xbadc0dedda7a1057ULL,
|
|
};
|
|
static const kernel_ulong_t sizes[] = {
|
|
0,
|
|
(kernel_ulong_t) 0xfacebeef00000000ULL,
|
|
(kernel_ulong_t) 0xfedcba9876543210ULL,
|
|
(kernel_ulong_t) 0x123456789abcdef0ULL,
|
|
(kernel_ulong_t) 0xbadc0dedda7a1057ULL,
|
|
};
|
|
static const struct {
|
|
kernel_ulong_t val;
|
|
const char *str;
|
|
} prots[] = {
|
|
{ ARG_STR(PROT_READ) },
|
|
/* For now, only 0x0300001f are used */
|
|
{ (kernel_ulong_t) 0xdeadfeed00ca7500ULL,
|
|
sizeof(kernel_ulong_t) > sizeof(int) ?
|
|
"0xdeadfeed00ca7500 /* PROT_??? */" :
|
|
"0xca7500 /* PROT_??? */" },
|
|
{ ARG_STR(PROT_READ|PROT_WRITE|0xface00) },
|
|
};
|
|
static const kernel_ulong_t pkeys[] = {
|
|
0,
|
|
-1LL,
|
|
(kernel_ulong_t) 0xface1e55,
|
|
(kernel_ulong_t) 0xbadc0ded00000001,
|
|
};
|
|
|
|
long rc;
|
|
unsigned int i;
|
|
unsigned int j;
|
|
unsigned int k;
|
|
unsigned int l;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(ptrs); i++) {
|
|
for (j = 0; j < ARRAY_SIZE(sizes); j++) {
|
|
for (k = 0; k < ARRAY_SIZE(prots); k++) {
|
|
for (l = 0; l < ARRAY_SIZE(pkeys); l++) {
|
|
rc = syscall(__NR_pkey_mprotect,
|
|
ptrs[i], sizes[j],
|
|
prots[k].val, pkeys[l]);
|
|
printf("pkey_mprotect(%s, %llu, %s, %d)"
|
|
" = %s\n",
|
|
sprintptr(ptrs[i]),
|
|
(unsigned long long) sizes[j],
|
|
prots[k].str, (int) pkeys[l],
|
|
sprintrc(rc));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
puts("+++ exited with 0 +++");
|
|
|
|
return 0;
|
|
}
|
|
|
|
#else
|
|
|
|
SKIP_MAIN_UNDEFINED("__NR_pkey_mprotect");
|
|
|
|
#endif
|