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/*
* Check decoding of cachestat syscall.
*
* Copyright (c) 2023 Dmitry V. Levin <ldv@strace.io>
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include "scno.h"
#include "cachestat.h"
#include <stdio.h>
#include <unistd.h>
#ifndef SKIP_IF_PROC_IS_UNAVAILABLE
# define SKIP_IF_PROC_IS_UNAVAILABLE skip_if_unavailable("/proc/self/fd/")
#endif
#ifndef FD9_PATH
# define FD9_PATH "</dev/full>"
#endif
#ifdef RETVAL_INJECTED
# define INJ_STR " (INJECTED)\n"
#else
# define INJ_STR "\n"
#endif
#ifndef TRACE_FDS
# define TRACE_FDS 0
#endif
#ifndef TRACE_PATH
# define TRACE_PATH 0
#endif
#define TRACE_FILTERED (TRACE_FDS || TRACE_PATH)
static const char *errstr;
static long
k_cachestat(const unsigned int fd, const void *crange,
const void *cstat, const unsigned int flags)
{
const kernel_ulong_t fill = (kernel_ulong_t) 0xbadc0ded00000000ULL;
const kernel_ulong_t arg1 = fill | fd;
const kernel_ulong_t arg2 = (uintptr_t) crange;
const kernel_ulong_t arg3 = (uintptr_t) cstat;
const kernel_ulong_t arg4 = fill | flags;
const kernel_ulong_t arg5 = fill | 0xdecaffed;
const kernel_ulong_t arg6 = fill | 0xdeefaced;
const long rc = syscall(__NR_cachestat,
arg1, arg2, arg3, arg4, arg5, arg6);
errstr = sprintrc(rc);
return rc;
}
int
main(void)
{
SKIP_IF_PROC_IS_UNAVAILABLE;
k_cachestat(-1, 0, 0, 0);
#if !TRACE_FILTERED
printf("cachestat(-1, NULL, NULL, 0) = %s" INJ_STR, errstr);
#endif
k_cachestat(9, 0, 0, -1U);
printf("cachestat(9%s, NULL, NULL, %#x) = %s" INJ_STR,
FD9_PATH, -1U, errstr);
TAIL_ALLOC_OBJECT_CONST_PTR(struct cachestat_range, crange);
fill_memory(crange, sizeof(*crange));
const void *const bad_crange = (void *) crange + 1;
k_cachestat(9, bad_crange, 0, 0);
printf("cachestat(9%s, %p, NULL, 0) = %s" INJ_STR,
FD9_PATH, bad_crange, errstr);
TAIL_ALLOC_OBJECT_CONST_PTR(struct cachestat, cstat);
fill_memory(cstat, sizeof(*cstat));
const void *const bad_cstat = (void *) cstat + 1;
k_cachestat(9, crange, bad_cstat, 0);
printf("cachestat(9%s, {off=%#llx, len=%llu}, %p, 0) = %s"
INJ_STR, FD9_PATH,
(unsigned long long) crange->off,
(unsigned long long) crange->len,
bad_cstat, errstr);
if (k_cachestat(9, 0, cstat, 0) < 0) {
printf("cachestat(9%s, NULL, %p, 0) = %s" INJ_STR,
FD9_PATH, cstat, errstr);
} else {
printf("cachestat(9%s, NULL, {nr_cache=%llu"
", nr_dirty=%llu, nr_writeback=%llu, nr_evicted=%llu"
", nr_recently_evicted=%llu}, 0) = %s" INJ_STR, FD9_PATH,
(unsigned long long) cstat->nr_cache,
(unsigned long long) cstat->nr_dirty,
(unsigned long long) cstat->nr_writeback,
(unsigned long long) cstat->nr_evicted,
(unsigned long long) cstat->nr_recently_evicted,
errstr);
}
puts("+++ exited with 0 +++");
return 0;
}
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