114 lines
2.5 KiB
C
114 lines
2.5 KiB
C
/*
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* Copyright (c) International Business Machines Corp., 2004
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* Written by Robbie Williamson
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* Test Description: Test that a normal page cannot be mapped into a high
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* memory region.
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*/
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#include <sys/types.h>
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#include <sys/mman.h>
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#include <sys/mount.h>
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#include <sys/stat.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "test.h"
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#include "safe_macros.h"
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#include "lapi/abisize.h"
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char *TCID = "mmap15";
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int TST_TOTAL = 1;
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#ifdef __ia64__
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# define HIGH_ADDR (void *)(0xa000000000000000UL)
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#else
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# define HIGH_ADDR (void *)(-page_size)
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#endif
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static long page_size;
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static void setup(void);
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static void cleanup(void);
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int main(int ac, char **av)
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{
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int lc, fd;
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void *addr;
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#ifdef TST_ABI32
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tst_brkm(TCONF, NULL, "This test is only for 64bit");
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#endif
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tst_parse_opts(ac, av, NULL, NULL);
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setup();
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for (lc = 0; TEST_LOOPING(lc); lc++) {
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tst_count = 0;
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fd = SAFE_OPEN(cleanup, "testfile", O_RDWR | O_CREAT, 0666);
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/* Attempt to mmap into highmem addr, should get ENOMEM */
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addr = mmap(HIGH_ADDR, page_size, PROT_READ,
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MAP_SHARED | MAP_FIXED, fd, 0);
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if (addr != MAP_FAILED) {
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tst_resm(TFAIL, "mmap into high region "
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"succeeded unexpectedly");
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munmap(addr, page_size);
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close(fd);
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continue;
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}
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if (errno != ENOMEM && errno != EINVAL) {
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tst_resm(TFAIL | TERRNO, "mmap into high region "
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"failed unexpectedly");
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} else {
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tst_resm(TPASS | TERRNO, "mmap into high region "
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"failed as expected");
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}
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SAFE_CLOSE(cleanup, fd);
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}
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cleanup();
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tst_exit();
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}
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static void setup(void)
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{
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tst_require_root();
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tst_tmpdir();
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page_size = getpagesize();
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TEST_PAUSE;
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}
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static void cleanup(void)
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{
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tst_rmdir();
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}
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