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106 lines
2.9 KiB
Bash
Executable File
106 lines
2.9 KiB
Bash
Executable File
#!/bin/sh
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#
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# SPDX-License-Identifier: BSD-2-Clause
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#
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# Copyright (c) 2022 Peter Holm <pho@FreeBSD.org>
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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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# https://reviews.freebsd.org/D35514
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# rename(2) version
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. ../default.cfg
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cat > /tmp/nlink4.c <<EOF
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#include <sys/stat.h>
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#include <ufs/ufs/dinode.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 <unistd.h>
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int
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main (void) {
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int fd, i, mx;
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char file[100];
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snprintf(file, sizeof(file), "f");
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if ((fd = open(file, O_RDWR | O_CREAT | O_TRUNC,
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DEFFILEMODE)) == -1)
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err(1, "creat(%s)", file);
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close(fd);
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mx = UFS_LINK_MAX - 1;
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for (i = 0; i < mx; i++) {
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snprintf(file, sizeof(file), "%d", i);
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if (link("f", file) == -1)
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err(1, "link(%s, %s)", "f", file);
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}
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/* The following link(2) must fail */
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i = mx;
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snprintf(file, sizeof(file), "%d", i);
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if (link("f", file) != -1)
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err(1, "link(%s, %s)", "f", file);
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if (errno != EMLINK)
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err(1, "Must fail: link(%s, %s)", "f", file);
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/* Must succeed */
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i = 0;
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snprintf(file, sizeof(file), "%d", i);
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if (unlink(file) == -1)
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err(1, "unlink(%s)", file);
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if (rename("1", "a") == -1) {
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if (errno == EMLINK)
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fprintf(stderr, "Unexpected EMLINK\n");
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err(1, "rename(%s, %s)", "1", "a");
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}
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return (0);
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}
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EOF
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mycc -o /tmp/nlink4 -Wall -Wextra -O2 /tmp/nlink4.c || exit 1
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rm /tmp/nlink4.c
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set -e
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here=`pwd`
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mount | grep -q "on $mntpoint " && umount -f $mntpoint
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mdconfig -l | grep "md$mdstart " && mdconfig -d -u $mdstart
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mdconfig -a -t swap -s 1g -u $mdstart
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newfs -Un /dev/md$mdstart > /dev/null
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mount /dev/md$mdstart $mntpoint
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set +e
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cd $mntpoint
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/tmp/nlink4; s=$?
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n=`ls -a | wc -l`
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[ $s -ne 0 ] && echo "$n files"
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cd $here
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umount $mntpoint
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mdconfig -d -u $mdstart
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rm /tmp/nlink4
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exit $s
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