136 lines
4.1 KiB
C
136 lines
4.1 KiB
C
/*
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* Check decoding of get_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_get_mempolicy
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# include <stdio.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(unsigned long maxnode)
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{
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unsigned long *const nodemask =
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tail_alloc(sizeof(*nodemask) * NLONGS(maxnode));
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if (syscall(__NR_get_mempolicy, 0, nodemask, maxnode, 0, 0)) {
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printf("get_mempolicy(NULL, %p, %lu, NULL, 0) = -1 %s (%m)\n",
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nodemask, maxnode, errno2name());
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return;
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}
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printf("get_mempolicy(NULL, [");
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unsigned int nlongs = NLONGS(maxnode);
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unsigned int i;
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for (i = 0; i < nlongs; ++i) {
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if (i)
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fputs(", ", stdout);
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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(*nodemask) * 2 + 2, nodemask[i]);
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}
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printf("], %lu, NULL, 0) = 0\n", maxnode);
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}
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int
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main(void)
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{
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long rc;
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if (syscall(__NR_get_mempolicy, 0, 0, 0, 0, 0))
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perror_msg_and_skip("get_mempolicy");
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puts("get_mempolicy(NULL, NULL, 0, NULL, 0) = 0");
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int *mode = (void *) 0xdefaced1baddeed2;
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unsigned long maxnode = (unsigned long) 0xcafef00dbadc0dedULL;
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const unsigned long *nodemask = (void *) 0xfacedad3bebefed4ULL;
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const unsigned long addr = (unsigned long) 0xfacefeeddeadbeefULL;
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const unsigned long flags = -1U;
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rc = syscall(__NR_get_mempolicy, mode, nodemask, maxnode, addr, flags);
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printf("get_mempolicy(%p, %p, %lu, %#lx, %s|%#lx) = %ld %s (%m)\n",
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mode, nodemask, maxnode, addr,
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"MPOL_F_NODE|MPOL_F_ADDR",
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flags & ~3, rc, errno2name());
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mode = tail_alloc(sizeof(*mode));
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rc = syscall(__NR_get_mempolicy, mode, 0, 0, 0, 0);
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printf("get_mempolicy([");
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printxval(policies, (unsigned) *mode, "MPOL_???");
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printf("], NULL, 0, NULL, 0) = %ld\n", rc);
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*mode = -1;
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rc = syscall(__NR_get_mempolicy, mode, 0, 0, mode - 1, 2);
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printf("get_mempolicy([");
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printxval(policies, (unsigned) *mode, "MPOL_???");
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printf("], NULL, 0, %p, MPOL_F_ADDR) = %ld\n", mode - 1, rc);
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maxnode = get_page_size() * 8;
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print_nodes(maxnode);
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print_nodes(maxnode + 1);
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print_nodes(maxnode + 2);
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maxnode = sizeof(*nodemask) * 8;
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print_nodes(maxnode - 1);
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print_nodes(maxnode );
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print_nodes(maxnode + 1);
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print_nodes(maxnode + 2);
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print_nodes(maxnode * 2 - 1);
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print_nodes(maxnode * 2 );
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print_nodes(maxnode * 2 + 1);
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print_nodes(maxnode * 2 + 2);
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print_nodes(maxnode * 3 - 1);
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print_nodes(maxnode * 3 );
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print_nodes(maxnode * 3 + 1);
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print_nodes(maxnode * 3 + 2);
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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_get_mempolicy")
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#endif
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