4 # Copyright (c) 2009 Peter Holm <pho@FreeBSD.org>
7 # Redistribution and use in source and binary forms, with or without
8 # modification, are permitted provided that the following conditions
10 # 1. Redistributions of source code must retain the above copyright
11 # notice, this list of conditions and the following disclaimer.
12 # 2. Redistributions in binary form must reproduce the above copyright
13 # notice, this list of conditions and the following disclaimer in the
14 # documentation and/or other materials provided with the distribution.
16 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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18 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 # ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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23 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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31 # Test race between ISDOTDOT lookups and directory removal/rename
33 # With lookup_shared=1 rename() will fail from time to time with ENOENT and
34 # the following stat() will succed.
36 # Test scenario by tegge
40 sed '1,/^EOF/d' < $here/$0 > rename.c
41 cc -o rename -Wall rename.c
45 rm -rf /tmp/rename.dir.*
54 rm -rf /tmp/rename.dir.*
64 #include <sys/types.h>
68 static char dir1[128];
69 static char dir2[128];
72 main(int argc, char **argv)
78 sprintf(dir1, "/tmp/rename.dir.%d", getpid());
79 sprintf(dir2, "/tmp/rename.dir.2.%d", getpid());
80 if (mkdir(dir1, 0700) == -1)
81 err(1, "mkdir(%s)", dir1);
83 if (chdir(dir1) == -1)
84 err(1, "chdir(%s)", dir1);
85 if ((p = fork()) == -1)
88 if (chdir("..") == -1)
89 err(1, "chdir(%s)", "..");
90 for (i = 0; i < 100000; i++) {
91 if (rename(dir1, dir2) == -1) {
92 warn("rename(%s, %s)", dir1, dir2);
94 if (stat(dir1, &sb) == -1)
95 err(1, "stat(%s)", dir1);
97 errx(1, "stat(%s) succeeded!", dir1);
99 if (rename(dir2, dir1) == -1) {
100 warn("rename(%s, %s)", dir2, dir1);
102 if (stat(dir2, &sb) == -1)
103 err(1, "stat(%s)", dir2);
105 errx(1, "stat(%s) succeeded!", dir2);
110 for (i = 0; i < 100000; i++) {
111 if (stat("..", &sb) == -1)
115 if (waitpid(p, &status, 0) == -1)
117 if (rmdir(dir1) == -1)
118 err(1, "rmdir(%s)", dir1);