86 lines
2.5 KiB
Bash
Executable File
86 lines
2.5 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 2013 Peter Holm <pho@FreeBSD.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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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# "panic: kmem_malloc(4096): kmem_map too small" seen.
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. ../default.cfg
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[ $((`sysctl -n vm.kmem_size` / 1024 / 1024 / 1024)) -eq 0 ] && exit 0
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dir=/tmp
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odir=`pwd`
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cd $dir
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sed '1,/^EOF/d' < $odir/$0 > $dir/shm_open.c
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mycc -o shm_open -Wall -Wextra -O2 -g shm_open.c || exit 1
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rm -f shm_open.c
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cd $odir
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v1=`vmstat -m | awk '/shmfd/{gsub("K", ""); print $3}'`
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su $testuser -c /tmp/shm_open
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v2=`vmstat -m | awk '/shmfd/{gsub("K", ""); print $3}'`
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v2=$((v2 - v1))
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[ $v2 -gt 10 ] && { echo "shmfd leaked ${v2}K"; s=1; } || s=0
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rm -f /tmp/shm_open
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exit $s
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EOF
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#include <err.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 <sys/mman.h>
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#include <unistd.h>
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int
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main(void)
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{
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pid_t pid;
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off_t len;
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int fd, i;
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char name[80];
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len = 1024 * 1024;
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pid = getpid();
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for (i = 0; i < 500000; i++) {
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sprintf(name, "/testing.%06d.%06d", pid, i);
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if ((fd = shm_open(name, O_RDWR | O_CREAT, 0644)) == -1)
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err(1, "shm_open()");
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if (ftruncate(fd, len) == -1)
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err(1, "ftruncate");
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close(fd);
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}
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for (i = 0; i < 500000; i++) {
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sprintf(name, "/testing.%06d.%06d", pid, i);
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if (shm_unlink(name) == -1)
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err(1, "shm_unlink(%s)", name);
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}
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return(0);
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}
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