tests/fs/vfs/t_rmdirrace.c

   1 /*      $NetBSD: t_rmdirrace.c,v 1.9 2012/02/16 02:47:56 perseant Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2010 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Nicolas Joly.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #include <sys/stat.h>
  33
  34 #include <atf-c.h>
  35 #include <fcntl.h>
  36 #include <pthread.h>
  37 #include <stdlib.h>
  38 #include <unistd.h>
  39
  40 #include <rump/rump_syscalls.h>
  41 #include <rump/rump.h>
  42
  43 #include "../common/h_fsmacros.h"
  44
  45 #define DIRNAME "rmdir.test"
  46
  47 static void *func1(void *arg)
  48 {
  49
  50         while (*(int *)arg != 1)
  51                 rump_sys_mkdir(DIRNAME, 0755);
  52
  53         return NULL;
  54 }
  55
  56 static void *func2(void *arg)
  57 {
  58
  59         while (*(int *)arg != 1)
  60                 rump_sys_rmdir(DIRNAME);
  61
  62         return NULL;
  63 }
  64
  65 static void
  66 race(const atf_tc_t *tc, const char *path)
  67 {
  68         int res, fd, quit;
  69         pthread_t th1, th2;
  70
  71         if (FSTYPE_SYSVBFS(tc))
  72                 atf_tc_skip("directories not supported by file system");
  73
  74         fd = rump_sys_open(".", O_RDONLY, 0666);
  75         if (fd == -1)
  76                 atf_tc_fail("open failed");
  77         res = rump_sys_chdir(path);
  78         if (res == -1)
  79                 atf_tc_fail("chdir failed");
  80
  81         quit = 0;
  82
  83         res = pthread_create(&th1, NULL, func1, &quit);
  84         if (res != 0)
  85                 atf_tc_fail("pthread_create1 failed");
  86         res = pthread_create(&th2, NULL, func2, &quit);
  87         if (res != 0)
  88                 atf_tc_fail("pthread_create2 failed");
  89
  90         sleep(10);
  91
  92         quit = 1;
  93
  94         res = pthread_join(th2, NULL);
  95         if (res != 0)
  96                 atf_tc_fail("pthread_join2 failed");
  97         res = pthread_join(th1, NULL);
  98         if (res != 0)
  99                 atf_tc_fail("pthread_join1 failed");
 100
 101         res = rump_sys_fchdir(fd);
 102         if (res == -1)
 103                 atf_tc_fail("fchdir failed");
 104 }
 105
 106 ATF_FSAPPLY(race, "rmdir(2) race");