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      1 /*
      2  * Check decoding of pkey_alloc syscall.
      3  *
      4  * Copyright (c) 2016 Eugene Syromyatnikov <evgsyr (at) gmail.com>
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. The name of the author may not be used to endorse or promote products
     16  *    derived from this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28  */
     29 
     30 #include "tests.h"
     31 #include <asm/unistd.h>
     32 #include "scno.h"
     33 
     34 #ifdef __NR_pkey_alloc
     35 
     36 # include <stdio.h>
     37 # include <unistd.h>
     38 
     39 int
     40 main(void)
     41 {
     42 	static const kernel_ulong_t flags[] = {
     43 		0,
     44 		(kernel_ulong_t) 0xbadc0ded00000000ULL,
     45 		(kernel_ulong_t) 0xffff0000eeee1111ULL,
     46 		(kernel_ulong_t) 0x123456789abcdef0ULL,
     47 	};
     48 	static const struct {
     49 		kernel_ulong_t val;
     50 		const char *str;
     51 	} rights[] = {
     52 		{ (kernel_ulong_t) 0xbadc0ded00000002ULL,
     53 			sizeof(kernel_ulong_t) > sizeof(int) ?
     54 			"PKEY_DISABLE_WRITE|0xbadc0ded00000000" :
     55 			"PKEY_DISABLE_WRITE" },
     56 		{ 0xdec0ded, "PKEY_DISABLE_ACCESS|0xdec0dec" },
     57 		{ 0x3, "PKEY_DISABLE_ACCESS|PKEY_DISABLE_WRITE" },
     58 		{ ARG_STR(0) },
     59 		{ 0xbadc0dec, "0xbadc0dec /* PKEY_??? */" },
     60 	};
     61 
     62 	long rc;
     63 	unsigned int i;
     64 	unsigned int j;
     65 
     66 	for (i = 0; i < ARRAY_SIZE(flags); i++) {
     67 		for (j = 0; j < ARRAY_SIZE(rights); j++) {
     68 			rc = syscall(__NR_pkey_alloc, flags[i], rights[j].val);
     69 			printf("pkey_alloc(%#llx, %s) = %s\n",
     70 			       (unsigned long long) flags[i], rights[j].str,
     71 			       sprintrc(rc));
     72 		}
     73 	}
     74 
     75 	puts("+++ exited with 0 +++");
     76 
     77 	return 0;
     78 }
     79 
     80 #else
     81 
     82 SKIP_MAIN_UNDEFINED("__NR_pkey_alloc");
     83 
     84 #endif
     85