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t_rmdirrace.c revision 1.8.2.1 
      1 /*	$NetBSD: t_rmdirrace.c,v 1.8.2.1 2012/04/17 00:09:04 yamt 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");
    107