t_renamerace.c revision 1.8 1 /* $NetBSD: t_renamerace.c,v 1.8 2010/07/16 19:16:41 pooka Exp $ */
2
3 /*
4 * Modified for rump and atf from a program supplied
5 * by Nicolas Joly in kern/40948
6 */
7
8 #include <sys/types.h>
9 #include <sys/mount.h>
10 #include <sys/utsname.h>
11
12 #include <atf-c.h>
13 #include <errno.h>
14 #include <fcntl.h>
15 #include <pthread.h>
16 #include <stdio.h>
17 #include <stdlib.h>
18 #include <string.h>
19 #include <unistd.h>
20
21 #include <rump/rump.h>
22 #include <rump/rump_syscalls.h>
23
24 #include "../common/h_fsmacros.h"
25 #include "../../h_macros.h"
26
27 static volatile int quittingtime;
28
29 static void *
30 w1(void *arg)
31 {
32 int fd;
33
34 rump_pub_lwp_alloc_and_switch(0, 10);
35 rump_sys_chdir(arg);
36
37 while (!quittingtime) {
38 fd = rump_sys_open("rename.test1",
39 O_WRONLY|O_CREAT|O_TRUNC, 0666);
40 if (fd == -1)
41 atf_tc_fail_errno("create");
42 rump_sys_unlink("rename.test1");
43 rump_sys_close(fd);
44 }
45
46 rump_sys_chdir("/");
47
48 return NULL;
49 }
50
51 static void *
52 w1_dirs(void *arg)
53 {
54
55 rump_pub_lwp_alloc_and_switch(0, 10);
56 rump_sys_chdir(arg);
57
58 while (!quittingtime) {
59 if (rump_sys_mkdir("rename.test1", 0777) == -1)
60 atf_tc_fail_errno("mkdir");
61 rump_sys_rmdir("rename.test1");
62 }
63
64 rump_sys_chdir("/");
65
66 return NULL;
67 }
68
69 static void *
70 w2(void *arg)
71 {
72
73 rump_pub_lwp_alloc_and_switch(0, 11);
74 rump_sys_chdir(arg);
75
76 while (!quittingtime) {
77 rump_sys_rename("rename.test1", "rename.test2");
78 }
79
80 rump_sys_chdir("/");
81
82 return NULL;
83 }
84
85 static void
86 renamerace(const atf_tc_t *tc, const char *mp)
87 {
88 pthread_t pt1, pt2;
89
90 if (FSTYPE_LFS(tc))
91 atf_tc_expect_signal(-1, "PR kern/43582");
92
93 if (FSTYPE_MSDOS(tc))
94 atf_tc_skip("test fails in some setups, reason unknown");
95
96 pthread_create(&pt1, NULL, w1, __UNCONST(mp));
97 pthread_create(&pt2, NULL, w2, __UNCONST(mp));
98
99 sleep(5);
100 quittingtime = 1;
101
102 pthread_join(pt1, NULL);
103 pthread_join(pt2, NULL);
104
105 /*
106 * XXX: does not always fail on LFS, especially for unicpu
107 * configurations. see other ramblings about racy tests.
108 */
109 if (FSTYPE_LFS(tc))
110 abort();
111 }
112
113 static void
114 renamerace_dirs(const atf_tc_t *tc, const char *mp)
115 {
116 pthread_t pt1, pt2;
117
118 if (FSTYPE_SYSVBFS(tc))
119 atf_tc_skip("directories not supported");
120
121 /* XXX: msdosfs also sometimes hangs */
122 if (FSTYPE_FFS(tc) || FSTYPE_EXT2FS(tc) || FSTYPE_LFS(tc) ||
123 FSTYPE_MSDOS(tc))
124 atf_tc_expect_signal(-1, "PR kern/43626");
125
126 pthread_create(&pt1, NULL, w1_dirs, __UNCONST(mp));
127 pthread_create(&pt2, NULL, w2, __UNCONST(mp));
128
129 sleep(5);
130 quittingtime = 1;
131
132 pthread_join(pt1, NULL);
133 pthread_join(pt2, NULL);
134
135 /*
136 * Doesn't always trigger when run on a slow backend
137 * (i.e. not on tmpfs/mfs). So do the usual kludge.
138 */
139 if (FSTYPE_FFS(tc) || FSTYPE_EXT2FS(tc) || FSTYPE_LFS(tc) ||
140 FSTYPE_MSDOS(tc))
141 abort();
142 }
143
144 ATF_TC_FSAPPLY(renamerace, "rename(2) race with file unlinked mid-operation");
145 ATF_TC_FSAPPLY(renamerace_dirs, "rename(2) race with directories");
146
147 ATF_TP_ADD_TCS(tp)
148 {
149
150 ATF_TP_FSAPPLY(renamerace); /* PR kern/41128 */
151 ATF_TP_FSAPPLY(renamerace_dirs);
152
153 return atf_no_error();
154 }
155