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146 lines
4.1 KiB
146 lines
4.1 KiB
/* |
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* Check decoding of set_mempolicy syscall. |
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* |
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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 <asm/unistd.h> |
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#ifdef __NR_set_mempolicy |
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# include <errno.h> |
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# include <stdio.h> |
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# include <string.h> |
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# include <unistd.h> |
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# include "xlat.h" |
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# include "xlat/policies.h" |
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# define MAX_STRLEN 3 |
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# define NLONGS(n) ((n + 8 * sizeof(long) - 2) \ |
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/ (8 * sizeof(long))) |
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static void |
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print_nodes(const unsigned long maxnode, unsigned int offset) |
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{ |
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unsigned int nlongs = NLONGS(maxnode); |
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if (nlongs <= offset) |
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nlongs = 0; |
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else |
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nlongs -= offset; |
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const unsigned int size = nlongs * sizeof(long); |
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unsigned long *const nodemask = |
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tail_alloc(size ? size : (offset ? 1 : 0)); |
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memset(nodemask, 0, size); |
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long rc = syscall(__NR_set_mempolicy, 0, nodemask, maxnode); |
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const char *errstr = sprintrc(rc); |
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fputs("set_mempolicy(MPOL_DEFAULT, ", stdout); |
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if (nlongs) { |
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putc('[', stdout); |
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unsigned int i; |
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for (i = 0; i < nlongs + offset; ++i) { |
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if (i) |
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fputs(", ", stdout); |
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if (i < nlongs) { |
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if (i >= MAX_STRLEN) { |
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fputs("...", stdout); |
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break; |
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} |
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printf("%#0*lx", (int) sizeof(long) * 2 + 2, |
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nodemask[i]); |
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} else { |
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printf("%p", nodemask + i); |
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break; |
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} |
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} |
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putc(']', stdout); |
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} else { |
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if (maxnode) |
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printf("%p", nodemask); |
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else |
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printf("[]"); |
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} |
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printf(", %lu) = %s\n", maxnode, errstr); |
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} |
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static void |
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test_offset(const unsigned int offset) |
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{ |
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unsigned long maxnode = get_page_size() * 8; |
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print_nodes(maxnode, offset); |
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print_nodes(maxnode + 1, offset); |
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print_nodes(maxnode + 2, offset); |
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maxnode = sizeof(long) * 8; |
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print_nodes(0, offset); |
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print_nodes(1, offset); |
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print_nodes(2, offset); |
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print_nodes(maxnode - 1, offset); |
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print_nodes(maxnode , offset); |
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print_nodes(maxnode + 1, offset); |
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print_nodes(maxnode + 2, offset); |
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print_nodes(maxnode * 2 - 1, offset); |
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print_nodes(maxnode * 2 , offset); |
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print_nodes(maxnode * 2 + 1, offset); |
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print_nodes(maxnode * 2 + 2, offset); |
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print_nodes(maxnode * 3 - 1, offset); |
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print_nodes(maxnode * 3 , offset); |
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print_nodes(maxnode * 3 + 1, offset); |
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print_nodes(maxnode * 3 + 2, offset); |
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print_nodes(maxnode * 4 + 2, offset); |
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} |
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int |
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main(void) |
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{ |
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if (syscall(__NR_set_mempolicy, 0, 0, 0)) |
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perror_msg_and_skip("set_mempolicy"); |
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puts("set_mempolicy(MPOL_DEFAULT, NULL, 0) = 0"); |
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const unsigned long *nodemask = (void *) 0xfacefeedfffffffeULL; |
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const unsigned long maxnode = (unsigned long) 0xcafef00dbadc0dedULL; |
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long rc = syscall(__NR_set_mempolicy, 1, nodemask, maxnode); |
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printf("set_mempolicy(MPOL_PREFERRED, %p, %lu) = %s\n", |
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nodemask, maxnode, sprintrc(rc)); |
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test_offset(0); |
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test_offset(1); |
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puts("+++ exited with 0 +++"); |
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return 0; |
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} |
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#else |
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SKIP_MAIN_UNDEFINED("__NR_set_mempolicy") |
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#endif
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