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/*
* Check decoding of ioprio_get and ioprio_set syscalls.
*
* Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com>
* Copyright (c) 2016-2018 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include <asm/unistd.h>
#if defined(__NR_ioprio_get) && defined(__NR_ioprio_set)
# include <stdio.h>
# include <unistd.h>
enum {
IOPRIO_CLASS_NONE,
IOPRIO_CLASS_RT,
IOPRIO_CLASS_BE,
IOPRIO_CLASS_IDLE
};
# include "xlat.h"
# include "xlat/ioprio_class.h"
void
print_ioprio(unsigned long val)
{
printf(" (IOPRIO_PRIO_VALUE(");
printxval(ioprio_class, val >> 13, "IOPRIO_CLASS_???");
printf(", %d))", (int) (val & 0x1fff));
}
int
main(void)
{
static const kernel_ulong_t bogus_which =
(kernel_ulong_t) 0xdeadfacefa57beefULL;
static const kernel_ulong_t bogus_who =
(kernel_ulong_t) 0xbadc0dedda7a1057ULL;
static const kernel_ulong_t bogus_ioprio =
(kernel_ulong_t) 0xdec0ded1facefeedULL;
static const char * const bogus_ioprio_str =
"IOPRIO_PRIO_VALUE(0x7d677 /* IOPRIO_CLASS_??? */, 7917)";
long rc;
rc = syscall(__NR_ioprio_get, bogus_which, bogus_who);
printf("ioprio_get(%#x /* IOPRIO_WHO_??? */, %d) = %s\n",
(int) bogus_which, (int) bogus_who, sprintrc(rc));
rc = syscall(__NR_ioprio_get, 1, 0);
printf("ioprio_get(IOPRIO_WHO_PROCESS, 0) = %s", sprintrc(rc));
if (rc >= -1)
print_ioprio(rc);
puts("");
rc = syscall(__NR_ioprio_set, 2, 0, 8191);
printf("ioprio_set(IOPRIO_WHO_PGRP, 0, "
"IOPRIO_PRIO_VALUE(IOPRIO_CLASS_NONE, 8191)) = %s\n",
sprintrc(rc));
rc = syscall(__NR_ioprio_set, bogus_which, bogus_who, bogus_ioprio);
printf("ioprio_set(%#x /* IOPRIO_WHO_??? */, %d, %s) = %s\n",
(int) bogus_which, (int) bogus_who, bogus_ioprio_str,
sprintrc(rc));
puts("+++ exited with 0 +++");
return 0;
}
#else
SKIP_MAIN_UNDEFINED("__NR_ioprio_get && __NR_ioprio_set");
#endif
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