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
|
#include <stdio.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/time.h>
#include <unistd.h>
#include <sys/wait.h>
#include <sys/syscall.h>
#include <errno.h>
#include <fcntl.h>
#include <getopt.h>
#include <string.h>
#include <stdlib.h>
#define F2FS_IOCTL_MAGIC 0xf5
#define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
#define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
#define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
#define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
#define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
#define F2FS_IOC_GARBAGE_COLLECT _IO(F2FS_IOCTL_MAGIC, 6)
#define DB1_PATH "/data/database_file1"
#define DB2_PATH "/mnt/androidwritable/0/emulated/0/Android/data/database_file2"
#define FILE_PATH "/data/testfile"
#define F2FS_BLKSIZE 4096
#define BLKS_TO_SECTOR_BITS 3
#define BLOCK 4096
#define BLOCKS (2 * BLOCK)
char buf[BLOCKS];
char cmd[BLOCK];
static int run(const char *cmd)
{
int status;
fflush(stdout);
switch (fork()) {
case 0:
/* redirect stderr to stdout */
dup2(1, 2);
execl("/system/bin/sh", "sh", "-c", cmd, (char *) NULL);
case -1:
printf("fork failed in run() errno:%d\n", errno);
return -1;
default:
wait(&status);
}
return 0;
}
static int test_atomic_write(char *path)
{
int db, ret, written;
printf("\tOpen %s... \n", path);
db = open(path, O_RDWR|O_CREAT, 0666);
if (db < 0) {
printf("open failed errno:%d\n", errno);
return -1;
}
printf("\tStart ... \n");
ret = ioctl(db, F2FS_IOC_START_ATOMIC_WRITE);
if (ret) {
printf("ioctl failed errno:%d\n", errno);
return -1;
}
printf("\tWrite to the %dkB ... \n", BLOCKS / 1024);
written = write(db, buf, BLOCKS);
if (written != BLOCKS) {
printf("write fail written:%d, errno:%d\n", written, errno);
return -1;
}
printf("\tCheck : Atomic in-memory count: 2\n");
if (access("/dev/sys/fs/by-name/userdata/current_atomic_write", F_OK)
== 0) {
printf("- inmem: ");
run("cat /dev/sys/fs/by-name/userdata/current_atomic_write");
} else {
run("grep \"atomic IO\" /sys/kernel/debug/f2fs/status");
}
printf("\tCommit ... \n");
ret = ioctl(db, F2FS_IOC_COMMIT_ATOMIC_WRITE);
if (ret) {
printf("ioctl failed errno:%d\n", errno);
return -1;
}
return 0;
}
static int test_bad_write_call(char *path)
{
int fd, written;
struct stat sb;
int large_size = 1024 * 1024 * 100; /* 100 MB */
int blocks;
printf("\tOpen %s... \n", path);
fd = open(path, O_RDWR|O_CREAT|O_TRUNC, 0666);
if (fd < 0) {
printf("open failed errno:%d\n", errno);
return -1;
}
/* 8KB-sized buffer, but submit 100 MB size */
printf("\tWrite to the %dkB ... \n", BLOCKS / 1024);
written = write(fd, buf, large_size);
if (written != BLOCKS)
printf("Ok: write fail written:%d, errno:%d\n", written, errno);
close(fd);
fd = open(path, O_RDONLY);
if (fd < 0) {
printf("open failed errno:%d\n", errno);
return -1;
}
if (stat(path, &sb) == -1) {
printf("stat failed errno:%d\n", errno);
return -1;
}
blocks = (long long)sb.st_size / F2FS_BLKSIZE;
if (sb.st_size % F2FS_BLKSIZE)
blocks++;
if (blocks << BLKS_TO_SECTOR_BITS != (long long)sb.st_blocks) {
printf("FAIL: Mismatch i_size and i_blocks: %lld %lld\n",
(long long)sb.st_size, (long long)sb.st_blocks);
printf("FAIL: missing patch "
"\"f2fs: do not preallocate blocks which has wrong buffer\"\n");
}
close(fd);
unlink(path);
return 0;
}
int main(void)
{
memset(buf, 0xff, BLOCKS);
printf("# Test 0: Check F2FS support\n");
run("cat /proc/filesystems");
printf("# Test 1: Check F2FS status on /userdata\n");
printf("\t= FS type /userdata\n");
run("mount | grep data");
printf("\n\t= F2FS features\n");
run("ls -1 /sys/fs/f2fs/features/");
run("find /sys/fs/f2fs -type f -name \"features\" -print -exec cat {} \\;");
run("find /sys/fs/f2fs -type f -name \"ipu_policy\" -print -exec cat {} \\;");
run("find /sys/fs/f2fs -type f -name \"discard_granularity\" -print -exec cat {} \\;");
run("cat /sys/kernel/debug/f2fs/status");
printf("\n\n# Test 2: Atomic_write on /userdata\n");
if (test_atomic_write(DB1_PATH))
return 0;
printf("# Test 3: Atomic_write on /sdcard\n");
if (test_atomic_write(DB2_PATH))
return 0;
printf("# Test 4: Bad write(2) call\n");
if (test_bad_write_call(FILE_PATH))
return 0;
return 0;
}
|
