1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
/* $NetBSD: t_basic.c,v 1.3 2010/06/09 08:37:16 pooka Exp $ */
#include <sys/types.h>
#include <sys/mount.h>
#include <atf-c.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <rump/rump.h>
#include <rump/rump_syscalls.h>
#include <miscfs/nullfs/null.h>
#include <fs/tmpfs/tmpfs_args.h>
#include "../../h_macros.h"
ATF_TC(basic);
ATF_TC_HEAD(basic, tc)
{
atf_tc_set_md_var(tc, "descr", "basic nullfs functionality");
}
#define MSTR "magic bus"
static void
xput_tfile(const char *path, const char *mstr)
{
int fd;
fd = rump_sys_open(path, O_CREAT | O_RDWR, 0777);
if (fd == -1)
atf_tc_fail_errno("create %s", path);
if (rump_sys_write(fd, MSTR, sizeof(MSTR)) != sizeof(MSTR))
atf_tc_fail_errno("write to testfile");
rump_sys_close(fd);
}
static int
xread_tfile(const char *path, const char *mstr)
{
char buf[128];
int fd;
fd = rump_sys_open(path, O_RDONLY);
if (fd == -1)
return errno;
if (rump_sys_read(fd, buf, sizeof(buf)) == -1)
atf_tc_fail_errno("read tfile");
rump_sys_close(fd);
if (strcmp(buf, MSTR) == 0)
return 0;
return EPROGMISMATCH;
}
static void
mountnull(const char *what, const char *mp, int flags)
{
struct null_args nargs;
memset(&nargs, 0, sizeof(nargs));
nargs.nulla_target = __UNCONST(what);
if (rump_sys_mount(MOUNT_NULL, mp, flags, &nargs, sizeof(nargs)) == -1)
atf_tc_fail_errno("could not mount nullfs");
}
ATF_TC_BODY(basic, tc)
{
struct tmpfs_args targs;
struct stat sb;
int error;
rump_init();
if (rump_sys_mkdir("/td1", 0777) == -1)
atf_tc_fail_errno("mp1");
if (rump_sys_mkdir("/td2", 0777) == -1)
atf_tc_fail_errno("mp1");
/* use tmpfs because rumpfs doesn't support regular files */
memset(&targs, 0, sizeof(targs));
targs.ta_version = TMPFS_ARGS_VERSION;
targs.ta_root_mode = 0777;
if (rump_sys_mount(MOUNT_TMPFS, "/td1", 0, &targs, sizeof(targs)) == -1)
atf_tc_fail_errno("could not mount tmpfs td1");
mountnull("/td1", "/td2", 0);
/* test unnull -> null */
xput_tfile("/td1/tensti", "jeppe");
error = xread_tfile("/td2/tensti", "jeppe");
if (error != 0)
atf_tc_fail("null compare failed: %d (%s)",
error, strerror(error));
/* test null -> unnull */
xput_tfile("/td2/kiekko", "keppi");
error = xread_tfile("/td1/kiekko", "keppi");
if (error != 0)
atf_tc_fail("unnull compare failed: %d (%s)",
error, strerror(error));
/* test unnull -> null overwrite */
xput_tfile("/td1/tensti", "se oolannin sota");
error = xread_tfile("/td2/tensti", "se oolannin sota");
if (error != 0)
atf_tc_fail("unnull compare failed: %d (%s)",
error, strerror(error));
/* test that /td2 is unaffected in "real life" */
if (rump_sys_unmount("/td2", 0) == -1)
atf_tc_fail_errno("cannot unmount nullfs");
if ((error = rump_sys_stat("/td2/tensti", &sb)) != -1
|| errno != ENOENT) {
atf_tc_fail("stat tensti should return ENOENT, got %d", error);
}
if ((error = rump_sys_stat("/td2/kiekko", &sb)) != -1
|| errno != ENOENT) {
atf_tc_fail("stat kiekko should return ENOENT, got %d", error);
}
/* done */
}
ATF_TC(twistymount);
ATF_TC_HEAD(twistymount, tc)
{
/* this is expected to fail until the PR is fixed */
atf_tc_set_md_var(tc, "descr", "\"recursive\" mounts deadlock"
" (kern/43439)");
}
/*
* Mapping to identifiers in kern/43439:
* /td = /home/current/pkgsrc
* /td/dist = /home/current/pkgsrc/distiles
* /mp = /usr/pkgsrc
* /mp/dist = /usr/pkgsrc/distfiles -- "created" by first null mount
*/
ATF_TC_BODY(twistymount, tc)
{
int mkd = 0;
rump_init();
if (rump_sys_mkdir("/td", 0777) == -1)
atf_tc_fail_errno("mkdir %d", mkd++);
if (rump_sys_mkdir("/td/dist", 0777) == -1)
atf_tc_fail_errno("mkdir %d", mkd++);
if (rump_sys_mkdir("/mp", 0777) == -1)
atf_tc_fail_errno("mkdir %d", mkd++);
/* MNT_RDONLY doesn't matter, but just for compat with the PR */
mountnull("/td", "/mp", MNT_RDONLY);
mountnull("/td/dist", "/mp/dist", 0);
/* if we didn't get a locking-against-meself panic, we passed */
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, basic);
ATF_TP_ADD_TC(tp, twistymount);
return atf_no_error();
}
|
