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
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
/* Tests for statvfs(2) call family */
#include <sys/statvfs.h>
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include <fcntl.h>
#include <err.h>
#include <unistd.h>
#define TRIALS 10
#define SIZE 65536
#define FSMAX 64
int max_error = 3;
#include "common.h"
int do_getvfsstat(struct statvfs *buf, size_t bufsz, int flags, int count);
void compare_statvfs(struct statvfs *st1, struct statvfs *st2);
void test55a(void);
void test55b(void);
int subtest;
char filename[] = "statvfs_test_XXXXXX";
static void create_file(void)
{
char buf[SIZE]={0};
char *p;
ssize_t ntowrite, nwritten;
int fd;
subtest = 2;
if ((fd = mkstemp(filename)) < 0) e(1);
ntowrite = SIZE;
p = &buf[0];
while (ntowrite > 0) {
if ((nwritten = write(fd, p, ntowrite)) < 0) e(2);
p += nwritten;
ntowrite -= nwritten;
}
if (close(fd) < 0) e(3);
}
void test55a(void)
{
struct statvfs stats;
unsigned long f_bsize, f_bsize_new;
unsigned long f_frsize, f_frsize_new;
fsblkcnt_t f_blocks, f_blocks_new;
fsblkcnt_t f_bfree, f_bfree_new;
fsblkcnt_t f_bavail, f_bavail_new;
fsfilcnt_t f_files, f_files_new;
fsfilcnt_t f_ffree, f_ffree_new;
fsfilcnt_t f_favail, f_favail_new;
unsigned long f_fsid, f_fsid_new;
unsigned long f_flag, f_flag_new;
unsigned long f_namemax, f_namemax_new;
subtest = 1;
if (statvfs(".", &stats) < 0) e(1);
f_bsize = stats.f_bsize ;
f_frsize = stats.f_frsize ;
f_blocks = stats.f_blocks ;
f_bfree = stats.f_bfree ;
f_bavail = stats.f_bavail ;
f_files = stats.f_files ;
f_ffree = stats.f_ffree ;
f_favail = stats.f_favail ;
f_fsid = stats.f_fsid ;
f_flag = stats.f_flag ;
f_namemax = stats.f_namemax;
create_file();
if (statvfs(".", &stats) < 0) e(2);
if (unlink(filename) < 0) e(3);
f_bsize_new = stats.f_bsize ;
f_frsize_new = stats.f_frsize ;
f_blocks_new = stats.f_blocks ;
f_bfree_new = stats.f_bfree ;
f_bavail_new = stats.f_bavail ;
f_files_new = stats.f_files ;
f_ffree_new = stats.f_ffree ;
f_favail_new = stats.f_favail ;
f_fsid_new = stats.f_fsid ;
f_flag_new = stats.f_flag ;
f_namemax_new = stats.f_namemax;
if (!((f_bsize == f_bsize_new) &&
(f_frsize == f_frsize_new) &&
(f_blocks == f_blocks_new) &&
(f_bfree > f_bfree_new) &&
(f_bavail > f_bavail_new) &&
(f_files == f_files_new) &&
(f_ffree == f_ffree_new + 1) &&
(f_favail == f_favail_new + 1) &&
(f_fsid == f_fsid_new) &&
(f_flag == f_flag_new) &&
(f_namemax == f_namemax_new))) {
e(4);
}
}
int do_getvfsstat(struct statvfs *buf, size_t bufsz, int flags, int count)
{
int i, j;
if (getvfsstat(buf, bufsz, flags) != count) e(101);
/* All file system identifiers should be unique. */
for (i = 0; i < count - 1; i++) {
for (j = i + 1; j < count; j++) {
if (buf[i].f_fsid == buf[j].f_fsid) e(102);
if (!memcmp(&buf[i].f_fsidx, &buf[j].f_fsidx,
sizeof(buf[j].f_fsidx))) e(103);
}
}
/* Expect one root file system. */
j = -1;
for (i = 0; i < count; i++) {
if (!strcmp(buf[i].f_mntonname, "/")) {
if (j != -1) e(104);
j = i;
}
}
if (j == -1) e(105);
return j;
}
void compare_statvfs(struct statvfs *st1, struct statvfs *st2)
{
int i;
/* The structures should basically be identical, but a background
* process calling statvfs for some reason might screw things up.
* Thus, we only compare fields that we know should be identical.
* For the strings, we use memcmp rather than strcmp to ensure that
* no garbage is left in the fields.
*/
if (st1->f_flag != st2->f_flag) e(201);
if (st1->f_bsize != st2->f_bsize) e(202);
if (st1->f_frsize != st2->f_frsize) e(203);
if (st1->f_iosize != st2->f_iosize) e(204);
if (st1->f_fsid != st2->f_fsid) e(205);
if (memcmp(&st1->f_fsidx, &st2->f_fsidx, sizeof(st1->f_fsidx))) e(206);
if (st1->f_namemax != st2->f_namemax) e(207);
if (st1->f_owner != st2->f_owner) e(208);
for (i = 0; i < sizeof(st1->f_spare) / sizeof(st1->f_spare[0]); i++) {
if (st1->f_spare[i] != 0) e(209);
if (st2->f_spare[i] != 0) e(210);
}
if (memcmp(st1->f_fstypename, st2->f_fstypename,
sizeof(st1->f_fstypename))) e(211);
if (memcmp(st1->f_mntonname, st2->f_mntonname,
sizeof(st1->f_mntonname))) e(212);
if (memcmp(st1->f_mntfromname, st2->f_mntfromname,
sizeof(st1->f_mntfromname))) e(213);
}
void test55b(void)
{
static struct statvfs buf[FSMAX];
struct statvfs rootbuf;
int count, root;
subtest = 2;
count = getvfsstat(NULL, 0, ST_WAIT);
if (count < 2) e(1); /* we have at least the root FS and ProcFS */
if (count > FSMAX) e(2);
if (getvfsstat(buf, 0, ST_WAIT) != 0) e(3);
if (getvfsstat(buf, sizeof(buf[0]) - 1, ST_WAIT) != 0) e(4);
if (getvfsstat(buf, sizeof(buf[0]), ST_WAIT) != 1) e(5);
if (getvfsstat(buf, sizeof(buf[0]) + 1, ST_WAIT) != 1) e(6);
if (getvfsstat(buf, sizeof(buf[0]) * 2, ST_WAIT) != 2) e(7);
/* We assume that nothing is being un/mounted right now. */
root = do_getvfsstat(buf, sizeof(buf), ST_WAIT, count);
/* Compare cached and uncached copies. */
if (statvfs1("/", &rootbuf, ST_NOWAIT) != 0) e(13);
compare_statvfs(&buf[root], &rootbuf);
/* Do the same again, but now the other way around. */
rootbuf = buf[root];
root = do_getvfsstat(buf, sizeof(buf), ST_NOWAIT, count);
compare_statvfs(&buf[root], &rootbuf);
}
int main(int argc, char **argv)
{
int i;
start(55);
for(i = 0; i < TRIALS; i++) {
test55a();
test55b();
}
quit();
return(-1);
}
|
