../regress/sys/uvm/mmap/mmap.c is now part of tests(7).
This commit is contained in:
jruoho
parent
c198c89355
commit
de255ab49d
@ -1,18 +0,0 @@
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# $NetBSD: Makefile,v 1.5 2006/10/14 20:57:10 bjh21 Exp $
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NOMAN= # defined
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PROG= mmap
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CLEANFILES+= mapped_file
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# This is hopefully just some file not mmap'd very often.
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SOME_FILE= /usr/share/misc/zipcodes
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regress: ${PROG}
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@if ./mmap ${SOME_FILE}; then \
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echo "PASSED"; \
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else \
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echo "FAILED"; \
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fi
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.include <bsd.prog.mk>
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@ -1,451 +0,0 @@
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/* $NetBSD: mmap.c,v 1.19 2011/05/24 16:11:08 joerg Exp $ */
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/*-
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* Copyright (c) 1999 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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* NASA Ames Research Center.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Test various memory mapping facilities.
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*/
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#include <sys/param.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <sys/ipc.h>
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#include <sys/shm.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h> /* for memset declaration (?) */
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int main(int, char *[]);
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void usage(void);
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int check_residency(void *, int);
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int pgsize;
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int verbose;
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#define MAPPED_FILE "mapped_file"
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#define TEST_PATTERN 0xa5
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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struct stat st;
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void *addr, *addr2, *addr3;
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int i, ch, ecode, fd, npgs, shmid;
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const char *filename;
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u_int8_t *cp;
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while ((ch = getopt(argc, argv, "v")) != -1) {
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switch (ch) {
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case 'v':
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verbose = 1;
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break;
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default:
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usage();
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}
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}
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argv += optind;
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argc -= optind;
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if (argc != 1)
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usage();
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filename = argv[0];
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ecode = 0;
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pgsize = sysconf(_SC_PAGESIZE);
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/*
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* TEST MLOCKING A FILE.
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*/
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printf(">>> MAPPING FILE <<<\n");
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fd = open(filename, O_RDONLY, 0666);
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if (fd == -1)
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err(1, "open %s", filename);
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if (fstat(fd, &st) == -1)
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err(1, "fstat %s", filename);
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addr = mmap(NULL, (size_t) st.st_size, PROT_READ, MAP_FILE|MAP_SHARED,
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fd, (off_t) 0);
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if (addr == MAP_FAILED)
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err(1, "mmap %s", filename);
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(void) close(fd);
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npgs = (st.st_size / pgsize);
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if (st.st_size % pgsize != 0)
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npgs++;
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printf(" CHECKING RESIDENCY\n");
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(void) check_residency(addr, npgs);
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printf(" LOCKING RANGE\n");
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if (mlock(addr, npgs * pgsize) == -1)
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err(1, "mlock %s", filename);
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printf(" CHECKING RESIDENCY\n");
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if (check_residency(addr, npgs) != npgs) {
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printf(" RESIDENCY CHECK FAILED!\n");
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ecode = 1;
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}
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printf(" UNLOCKING RANGE\n");
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if (munlock(addr, pgsize) == -1)
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err(1, "munlock %s", filename);
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(void) munmap(addr, st.st_size);
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/*
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* TEST THE MAP_WIRED FLAG TO MMAP.
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*/
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npgs = 128;
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printf(">>> MAPPING %d PAGE ANONYMOUS REGION WITH MAP_WIRED <<<\n",
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npgs);
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addr = mmap(NULL, npgs * pgsize, PROT_READ|PROT_WRITE,
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MAP_ANON|MAP_PRIVATE|MAP_WIRED, -1, (off_t) 0);
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if (addr == MAP_FAILED)
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err(1, "mmap anon MAP_WIRED");
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printf(" CHECKING RESIDENCY\n");
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if (check_residency(addr, npgs) != npgs) {
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printf(" RESIDENCY CHECK FAILED!\n");
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ecode = 1;
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}
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(void) munmap(addr, npgs * pgsize);
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/*
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* TEST MLOCKALL'ING AN ANONYMOUS MEMORY RANGE.
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*/
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npgs = 128;
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printf(">>> MAPPING %d PAGE ANONYMOUS REGION <<<\n", npgs);
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addr = mmap(NULL, npgs * pgsize, PROT_READ|PROT_WRITE,
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MAP_ANON|MAP_PRIVATE, -1, (off_t) 0);
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if (addr == MAP_FAILED)
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err(1, "mmap anon #1");
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printf(" CHECKING RESIDENCY\n");
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if (check_residency(addr, npgs) != 0) {
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printf(" RESIDENCY CHECK FAILED!\n");
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ecode = 1;
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}
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printf(" LOCKING ALL - CURRENT and FUTURE\n");
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if (mlockall(MCL_CURRENT|MCL_FUTURE) == -1)
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err(1, "mlockall current/future");
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printf(" CHECKING RESIDENCY\n");
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if (check_residency(addr, npgs) != npgs) {
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printf(" RESIDENCY CHECK FAILED!\n");
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ecode = 1;
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}
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printf(">>> MAPPING ANOTHER %d PAGE ANONYMOUS REGION <<<\n", npgs);
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addr2 = mmap(NULL, npgs * pgsize, PROT_READ, MAP_ANON, -1, (off_t) 0);
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if (addr2 == MAP_FAILED)
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err(1, "mmap anon #2");
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printf(" CHECKING RESIDENCY\n");
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if (check_residency(addr2, npgs) != npgs) {
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printf(" RESIDENCY CHECK FAILED!\n");
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ecode = 1;
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}
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printf(">>> MAPPING THIRD %d PAGE ANONYMOUS REGION, PROT_NONE <<<\n",
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npgs);
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addr3 = mmap(NULL, npgs * pgsize, PROT_NONE, MAP_ANON, -1, (off_t) 0);
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if (addr3 == MAP_FAILED)
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err(1, "mmap anon #3");
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printf(" CHECKING RESIDENCY\n");
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if (check_residency(addr3, npgs) != 0) {
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printf(" RESIDENCY CHECK FAILED!\n");
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ecode = 1;
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}
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printf(" PROT_READ'ING MAPPING\n");
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if (mprotect(addr3, npgs * pgsize, PROT_READ) == -1)
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err(1, "mprotect");
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printf(" CHECKING RESIDENCY\n");
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if (check_residency(addr3, npgs) != npgs) {
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printf(" RESIDENCY CHECK FAILED!\n");
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ecode = 1;
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}
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printf(" UNLOCKING ALL\n");
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printf(" CHECKING RESIDENCY\n");
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if (check_residency(addr, npgs) != npgs ||
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check_residency(addr2, npgs) != npgs) {
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printf(" RESIDENCY CHECK FAILED!\n");
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ecode = 1;
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}
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(void) munlockall();
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printf(">>> MADV_FREE'ING SECOND ANONYMOUS REGION <<<\n");
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if (madvise(addr2, npgs * pgsize, MADV_FREE) == -1)
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err(1, "madvise");
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printf(" CHECKING RESIDENCY\n");
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if (check_residency(addr2, npgs) != 0) {
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printf(" RESIDENCY CHECK FAILED!\n");
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ecode = 1;
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}
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printf(">>> MADV_FREE'ING FIRST ANONYMOUS REGION <<<\n");
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if (madvise(addr, npgs * pgsize, MADV_FREE) == -1)
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err(1, "madvise");
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printf(" CHECKING RESIDENCY\n");
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if (check_residency(addr, npgs) != 0) {
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printf(" RESIDENCY CHECK FAILED!\n");
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ecode = 1;
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}
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printf(">>> ZEROING FIRST ANONYMOUS REGION <<<\n");
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memset(addr, 0, npgs * pgsize);
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printf(" CHECKING RESIDENCY\n");
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if (check_residency(addr, npgs) != npgs) {
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printf(" RESIDENCY CHECK FAILED!\n");
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ecode = 1;
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}
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printf(">>> MADV_FREE'ING FIRST ANONYMOUS REGION AGAIN <<<\n");
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if (madvise(addr, npgs * pgsize, MADV_FREE) == -1)
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err(1, "madvise");
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printf(" CHECKING RESIDENCY\n");
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if (check_residency(addr, npgs) != 0) {
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printf(" RESIDENCY CHECK FAILED!\n");
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ecode = 1;
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}
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printf(">>> UNMAPPING ANONYMOUS REGIONS <<<\n");
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(void) munmap(addr, npgs * pgsize);
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(void) munmap(addr2, npgs * pgsize);
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(void) munmap(addr3, npgs * pgsize);
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printf(">>> CREATING MAPPED FILE <<<\n");
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(void) unlink(MAPPED_FILE);
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if ((fd = open(MAPPED_FILE, O_RDWR|O_CREAT|O_TRUNC, 0666)) == -1)
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err(1, "open %s", MAPPED_FILE);
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if ((cp = malloc(npgs * pgsize)) == NULL)
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err(1, "malloc %d bytes", npgs * pgsize);
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memset(cp, 0x01, npgs * pgsize);
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if (write(fd, cp, npgs * pgsize) != npgs * pgsize)
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err(1, "write %s", MAPPED_FILE);
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addr = mmap(NULL, npgs * pgsize, PROT_READ|PROT_WRITE,
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MAP_FILE|MAP_SHARED, fd, (off_t) 0);
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if (addr == MAP_FAILED)
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err(1, "mmap %s", MAPPED_FILE);
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(void) close(fd);
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printf(" WRITING TEST PATTERN\n");
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for (i = 0; i < npgs * pgsize; i++)
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((u_int8_t *)addr)[i] = TEST_PATTERN;
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printf(" SYNCING FILE\n");
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if (msync(addr, npgs * pgsize, MS_SYNC|MS_INVALIDATE) == -1)
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err(1, "msync %s", MAPPED_FILE);
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printf(" UNMAPPING FILE\n");
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(void) munmap(addr, npgs * pgsize);
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printf(" READING FILE\n");
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if ((fd = open(MAPPED_FILE, O_RDONLY, 0666)) == -1)
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err(1, "open %s", MAPPED_FILE);
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if (read(fd, cp, npgs * pgsize) != npgs * pgsize)
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err(1, "read %s", MAPPED_FILE);
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(void) close(fd);
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printf(" CHECKING TEST PATTERN\n");
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for (i = 0; i < npgs * pgsize; i++) {
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if (cp[i] != TEST_PATTERN) {
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printf(" INCORRECT BYTE AT OFFSET %d: "
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"0x%02x should be 0x%02x\n", i, cp[i],
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TEST_PATTERN);
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ecode = 1;
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break;
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}
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}
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printf(">>> CREATING SYSV SHM SEGMENT <<<\n");
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if ((shmid = shmget(IPC_PRIVATE, npgs * pgsize,
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IPC_CREAT|S_IRUSR|S_IWUSR)) == -1)
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err(1, "shmget");
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if ((addr = shmat(shmid, NULL, 0)) == (void *) -1)
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err(1, "shmat");
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printf(" CHECKING RESIDENCY\n");
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if (check_residency(addr, npgs) != 0) {
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printf(" RESIDENCY CHECK FAILED!\n");
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ecode = 1;
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}
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printf(" ZEROING SEGMENT\n");
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memset(addr, 0xff, npgs * pgsize);
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printf(" CHECKING RESIDENCY\n");
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if (check_residency(addr, npgs) != npgs) {
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printf(" RESIDENCY CHECK FAILED!\n");
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ecode = 1;
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}
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printf(" MADV_FREE'ING SEGMENT\n");
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if (madvise(addr, npgs * pgsize, MADV_FREE) == -1)
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err(1, "madvise");
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printf(" CHECKING RESIDENCY\n");
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/*
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* NOTE! Even though we have MADV_FREE'd the range,
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* there is another reference (the kernel's) to the
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* object which owns the pages. In this case, the
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* kernel does not simply free the pages, as haphazardly
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* freeing pages when there are still references to
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* an object can cause data corruption (say, the other
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* referencer doesn't expect the pages to be freed,
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* and is surprised by the subsequent ZFOD).
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*
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* Because of this, we simply report the number of
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* pages still resident, for information only.
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*/
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npgs = check_residency(addr, npgs);
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printf(" RESIDENCY CHECK: %d pages still resident\n", npgs);
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if (shmdt(addr) == -1)
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warn("shmdt");
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if (shmctl(shmid, IPC_RMID, NULL) == -1)
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err(1, "shmctl");
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exit(ecode);
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}
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int
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check_residency(addr, npgs)
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void *addr;
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int npgs;
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{
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char *vec;
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int i, resident;
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vec = malloc(npgs);
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if (vec == NULL)
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err(1, "malloc mincore vec");
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if (mincore(addr, npgs * pgsize, vec) == -1)
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err(1, "mincore");
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for (i = 0, resident = 0; i < npgs; i++) {
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if (vec[i] != 0)
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resident++;
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if (verbose)
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printf("page 0x%p is %sresident\n",
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addr + (i * pgsize), vec[i] ? "" : "not ");
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}
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free(vec);
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return (resident);
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}
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void
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usage()
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{
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fprintf(stderr, "usage: %s [-v] filename\n", getprogname());
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exit(1);
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}
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