ed08fe6512
Adapt dholland@'s fix to ufs_rename to fix PR kern/43582. Address several other MP locking issues discovered during the course of investigating the same problem. Removed extraneous vn_lock() calls on the Ifile, since the Ifile writes are controlled by the segment lock. Fix PR kern/45982 by deemphasizing the estimate of how much metadata will fill the empty space on disk when the disk is nearly empty (t_renamerace crates a lot of inode blocks on a tiny empty disk).
107 lines
2.8 KiB
C
107 lines
2.8 KiB
C
/* $NetBSD: t_rmdirrace.c,v 1.9 2012/02/16 02:47:56 perseant Exp $ */
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/*-
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* Copyright (c) 2010 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 Nicolas Joly.
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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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#include <sys/stat.h>
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#include <atf-c.h>
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#include <fcntl.h>
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#include <pthread.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <rump/rump_syscalls.h>
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#include <rump/rump.h>
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#include "../common/h_fsmacros.h"
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#define DIRNAME "rmdir.test"
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static void *func1(void *arg)
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{
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while (*(int *)arg != 1)
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rump_sys_mkdir(DIRNAME, 0755);
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return NULL;
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}
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static void *func2(void *arg)
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{
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while (*(int *)arg != 1)
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rump_sys_rmdir(DIRNAME);
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return NULL;
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}
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static void
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race(const atf_tc_t *tc, const char *path)
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{
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int res, fd, quit;
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pthread_t th1, th2;
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if (FSTYPE_SYSVBFS(tc))
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atf_tc_skip("directories not supported by file system");
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fd = rump_sys_open(".", O_RDONLY, 0666);
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if (fd == -1)
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atf_tc_fail("open failed");
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res = rump_sys_chdir(path);
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if (res == -1)
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atf_tc_fail("chdir failed");
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quit = 0;
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res = pthread_create(&th1, NULL, func1, &quit);
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if (res != 0)
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atf_tc_fail("pthread_create1 failed");
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res = pthread_create(&th2, NULL, func2, &quit);
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if (res != 0)
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atf_tc_fail("pthread_create2 failed");
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sleep(10);
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quit = 1;
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res = pthread_join(th2, NULL);
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if (res != 0)
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atf_tc_fail("pthread_join2 failed");
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res = pthread_join(th1, NULL);
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if (res != 0)
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atf_tc_fail("pthread_join1 failed");
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res = rump_sys_fchdir(fd);
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if (res == -1)
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atf_tc_fail("fchdir failed");
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}
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ATF_FSAPPLY(race, "rmdir(2) race");
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