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/*
* Check decoding of kcmp 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_kcmp
# include <stdio.h>
# include <unistd.h>
# define KCMP_FILE 0
# define KCMP_SYSVSEM 6
static void
do_kcmp(kernel_ulong_t pid1, kernel_ulong_t pid2, kernel_ulong_t type,
const char *type_str, kernel_ulong_t idx1, kernel_ulong_t idx2)
{
long rc;
const char *errstr;
rc = syscall(__NR_kcmp, pid1, pid2, type, idx1, idx2);
errstr = sprintrc(rc);
printf("kcmp(%d, %d, ", (int) pid1, (int) pid2);
if (type_str)
printf("%s", type_str);
else
printf("%#x /* KCMP_??? */", (int) type);
if (type == KCMP_FILE)
printf(", %u, %u", (unsigned) idx1, (unsigned) idx2);
else if (type > KCMP_SYSVSEM)
printf(", %#llx, %#llx",
(unsigned long long) idx1, (unsigned long long) idx2);
printf(") = %s\n", errstr);
}
int
main(void)
{
static const kernel_ulong_t bogus_pid1 =
(kernel_ulong_t) 0xdeadca75face1057ULL;
static const kernel_ulong_t bogus_pid2 =
(kernel_ulong_t) 0xdefaced1defaced2ULL;
static const kernel_ulong_t bogus_type =
(kernel_ulong_t) 0xbadc0dedda7adeadULL;
static const kernel_ulong_t bogus_idx1 =
(kernel_ulong_t) 0xdec0ded3dec0ded4ULL;
static const kernel_ulong_t bogus_idx2 =
(kernel_ulong_t) 0xba5e1e55deadc0deULL;
/* Invalid values */
do_kcmp(bogus_pid1, bogus_pid2, bogus_type, NULL, bogus_idx1,
bogus_idx2);
do_kcmp(0, 0, KCMP_SYSVSEM + 1, NULL, 0, 0);
/* KCMP_FILE is the only type which has additional args */
do_kcmp(3141592653U, 2718281828U, ARG_STR(KCMP_FILE), bogus_idx1,
bogus_idx2);
/* Some type without additional args */
do_kcmp(-1, -1, ARG_STR(KCMP_SYSVSEM), bogus_idx1, bogus_idx2);
puts("+++ exited with 0 +++");
return 0;
}
#else
SKIP_MAIN_UNDEFINED("__NR_kcmp");
#endif
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