156 lines
3.6 KiB
Bash
Executable File
156 lines
3.6 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 2013 EMC Corp.
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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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# tmpfs(5) name lookup problem seen:
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# $ ./tmpfs10.sh
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# tmpfs10: unlink(p01193.14729) at loop #2: No such file or directory
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# unlink(p01193.14729) succeeded at call #2.
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# tmpfs10: unlink(p01186.14409) at loop #2: No such file or directory
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# unlink(p01186.14409) succeeded at call #2.
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# FAIL
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# $
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# Fixed in r253967.
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[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
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. ../default.cfg
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odir=`pwd`
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cd /tmp
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sed '1,/^EOF/d' < $odir/$0 > tmpfs10.c
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mycc -o tmpfs10 -Wall -Wextra -O2 -g tmpfs10.c || exit 1
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rm -f tmpfs10.c
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cd $odir
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mount | grep -q "on $mntpoint " && umount $mntpoint
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mount -t tmpfs tmpfs $mntpoint
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cd $mntpoint
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/tmp/tmpfs10 ||
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{ find $mntpoint ! -type d | xargs ls -il; echo FAIL; }
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cd $odir
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umount $mntpoint
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rm -f /tmp/tmpfs10
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exit 0
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EOF
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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 <sys/param.h>
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#include <sys/stat.h>
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#include <sys/wait.h>
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#include <unistd.h>
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static int loop;
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int error;
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#define PARALLEL 20
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#define SIZE 16000
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void
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test2(void)
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{
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int i, j, k;
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pid_t pid;
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char file[128], dir[128];
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loop++;
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pid = getpid();
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sprintf(dir,"%s.%05d", getprogname(), pid);
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if (mkdir(dir, 0770) < 0)
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err(1, "mkdir(%s), %s:%d", dir, __FILE__, __LINE__);
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if (chdir(dir) == -1)
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err(1, "chdir(%s), %s:%d", dir, __FILE__, __LINE__);
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for (j = 0; j < SIZE; j++) {
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sprintf(file,"p%05d.%05d", pid, j);
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if (symlink("/tmp/not/there", file) == -1) {
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if (errno != EINTR) {
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warn("symlink(%s). %s.%d", file, __FILE__, __LINE__);
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break;
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}
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}
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}
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for (i = --j; i >= 0; i--) {
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sprintf(file,"p%05d.%05d", pid, i);
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if (unlink(file) == -1) {
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warn("unlink(%s) at loop #%d", file, loop);
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error++;
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for (k = 0; k < 10; k++) {
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usleep(10000);
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if (unlink(file) == 0) {
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fprintf(stderr,
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"unlink(%s) succeeded at call #%d.\n",
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file, k + 2);
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break;
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}
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}
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}
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}
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(void)chdir("..");
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if (rmdir(dir) == -1)
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warn("rmdir(%s), %s:%d", dir, __FILE__, __LINE__);
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}
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void
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test(void)
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{
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sleep(arc4random() % 3 + 1);
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test2();
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if (error == 0)
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test2();
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_exit(error);
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}
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int
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main(void)
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{
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int e, i, status;
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for (i = 0; i < PARALLEL; i++)
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if (fork() == 0)
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test();
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e = 0;
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for (i = 0; i < PARALLEL; i++) {
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wait(&status);
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e += WEXITSTATUS(status);
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}
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return (e);
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}
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