t_renamerace.c revision 1.11 1 /* $NetBSD: t_renamerace.c,v 1.11 2010/08/26 18:06:44 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
36 while (!quittingtime) {
37 fd = rump_sys_open("rename.test1",
38 O_WRONLY|O_CREAT|O_TRUNC, 0666);
39 if (fd == -1 && errno != EEXIST)
40 atf_tc_fail_errno("create");
41 rump_sys_unlink("rename.test1");
42 rump_sys_close(fd);
43 }
44
45 return NULL;
46 }
47
48 static void *
49 w1_dirs(void *arg)
50 {
51
52 rump_pub_lwp_alloc_and_switch(0, 10);
53
54 while (!quittingtime) {
55 if (rump_sys_mkdir("rename.test1", 0777) == -1)
56 atf_tc_fail_errno("mkdir");
57 rump_sys_rmdir("rename.test1");
58 }
59
60 return NULL;
61 }
62
63 static void *
64 w2(void *arg)
65 {
66
67 rump_pub_lwp_alloc_and_switch(0, 11);
68
69 while (!quittingtime) {
70 rump_sys_rename("rename.test1", "rename.test2");
71 }
72
73 return NULL;
74 }
75
76 #define NWRK 8
77 static void
78 renamerace(const atf_tc_t *tc, const char *mp)
79 {
80 pthread_t pt1[NWRK], pt2[NWRK];
81 int i;
82
83 if (FSTYPE_LFS(tc))
84 atf_tc_expect_signal(-1, "PR kern/43582");
85
86 if (FSTYPE_MSDOS(tc))
87 atf_tc_skip("test fails in some setups, reason unknown");
88
89 RL(rump_sys_chdir(mp));
90 for (i = 0; i < NWRK; i++)
91 pthread_create(&pt1[i], NULL, w1, NULL);
92
93 for (i = 0; i < NWRK; i++)
94 pthread_create(&pt2[i], NULL, w2, NULL);
95
96 sleep(5);
97 quittingtime = 1;
98
99 for (i = 0; i < NWRK; i++)
100 pthread_join(pt1[i], NULL);
101 for (i = 0; i < NWRK; i++)
102 pthread_join(pt2[i], NULL);
103 RL(rump_sys_chdir("/"));
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 RL(rump_sys_chdir(mp));
127 pthread_create(&pt1, NULL, w1_dirs, NULL);
128 pthread_create(&pt2, NULL, w2, NULL);
129
130 sleep(5);
131 quittingtime = 1;
132
133 pthread_join(pt1, NULL);
134 pthread_join(pt2, NULL);
135 RL(rump_sys_chdir("/"));
136
137 /*
138 * Doesn't always trigger when run on a slow backend
139 * (i.e. not on tmpfs/mfs). So do the usual kludge.
140 */
141 if (FSTYPE_FFS(tc) || FSTYPE_EXT2FS(tc) || FSTYPE_LFS(tc) ||
142 FSTYPE_MSDOS(tc))
143 abort();
144 }
145
146 ATF_TC_FSAPPLY(renamerace, "rename(2) race with file unlinked mid-operation");
147 ATF_TC_FSAPPLY(renamerace_dirs, "rename(2) race with directories");
148
149 ATF_TP_ADD_TCS(tp)
150 {
151
152 ATF_TP_FSAPPLY(renamerace); /* PR kern/41128 */
153 ATF_TP_FSAPPLY(renamerace_dirs);
154
155 return atf_no_error();
156 }
157