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80 lines
2.8 KiB
80 lines
2.8 KiB
4 months ago
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/*
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* Copyright (c) 2017 The strace developers.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "tests.h"
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#include <stdint.h>
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#include <stdio.h>
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#include <sys/mman.h>
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#include <unistd.h>
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#include <asm/unistd.h>
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static const char *errstr;
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static long
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k_madvise(const kernel_ulong_t addr,
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const kernel_ulong_t length,
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const kernel_ulong_t advice)
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{
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long rc = syscall(__NR_madvise, addr, length, advice);
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errstr = sprintrc(rc);
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return rc;
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}
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int
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main(void)
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{
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const unsigned long length = get_page_size();
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void *const addr = tail_alloc(length);
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long rc;
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rc = madvise(addr, length, MADV_NORMAL);
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printf("madvise(%p, %lu, MADV_NORMAL) = %s\n",
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addr, length, sprintrc(rc));
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static const kernel_ulong_t advice =
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(kernel_ulong_t) 0xfacefeed00000000ULL | MADV_RANDOM;
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rc = k_madvise((uintptr_t) addr, length, advice);
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printf("madvise(%p, %lu, MADV_RANDOM) = %s\n",
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addr, length, sprintrc(rc));
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static const kernel_ulong_t bogus_length =
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(kernel_ulong_t) 0xfffffffffffffaceULL;
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rc = k_madvise(0, bogus_length, MADV_SEQUENTIAL);
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printf("madvise(NULL, %llu, MADV_SEQUENTIAL) = %s\n",
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(unsigned long long) bogus_length, sprintrc(rc));
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if (F8ILL_KULONG_SUPPORTED) {
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rc = k_madvise(f8ill_ptr_to_kulong(addr), length, MADV_NORMAL);
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printf("madvise(%#llx, %lu, MADV_NORMAL) = %s\n",
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(unsigned long long) f8ill_ptr_to_kulong(addr),
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length, sprintrc(rc));
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}
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puts("+++ exited with 0 +++");
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return 0;
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}
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