Dmitry V. Levin
dfea1da0e6
* mem.c (SYS_FUNC(mincore)): Print only those bytes of the vector that were written by the kernel. * NEWS: Mention this fix. * tests/mincore.c: New file. * tests/mincore.test: New test. * tests/Makefile.am (check_PROGRAMS): Add mincore. (TESTS): Add mincore.test. * tests/.gitignore: Add mincore.
64 lines
2.1 KiB
C
64 lines
2.1 KiB
C
/*
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* Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
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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 <stdio.h>
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#include <sys/mman.h>
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#define DEFAULT_STRLEN 32
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static void
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test_mincore(const unsigned int pages)
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{
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const size_t size = pages * get_page_size();
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char *addr = tail_alloc(size);
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unsigned char *vec = tail_alloc(pages);
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unsigned int i;
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if (mincore(addr, size, vec))
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perror_msg_and_skip("mincore");
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printf("mincore(%p, %zu, [", addr, size);
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for (i = 0; i < pages; ++i) {
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if (i >= DEFAULT_STRLEN) {
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printf("...");
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break;
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}
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printf("%u", vec[i] & 1);
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}
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puts("]) = 0");
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}
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int main(void)
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{
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test_mincore(1);
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test_mincore(2);
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test_mincore(DEFAULT_STRLEN + 1);
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puts("+++ exited with 0 +++");
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return 0;
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}
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