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
|
// SPDX-License-Identifier: GPL-2.0-or-later
#include "common.h"
#define BUFLEN 128
int
read_uint_from_file(char *dirname, char *filename, unsigned int *i)
{
FILE *f;
char fname[BUFLEN];
int ret = -1;
snprintf(fname, sizeof(fname), "%s/%s", dirname, filename);
f = fopen(fname, "r");
if (!f)
return ret;
if (fscanf(f, "%u", i) == 1)
ret = 0;
fclose(f);
return ret;
}
char
*read_string_from_file(const char *dirname, const char *filename, char *buf, size_t bufsz)
{
FILE *f;
char fname[BUFLEN];
int i;
snprintf(fname, sizeof(fname), "%s/%s", dirname, filename);
f = fopen(fname, "r");
if (!f)
return NULL;
if (fgets(buf, bufsz, f) == NULL)
return NULL;
fclose(f);
/* make sure the string is \0 terminated */
buf[bufsz - 1] = '\0';
/* remove trailing whitespace */
i = strlen(buf) - 1;
while (i > 0 && buf[i] <= ' ')
buf[i--] = '\0';
return buf;
}
int block_file_identify(FILE *f, uint64_t offset)
{
uint32_t magic = 0;
size_t n;
fseeko(f, offset, SEEK_SET);
n = fread(&magic, sizeof(magic), 1, f);
if (magic == cpu_to_le32(0x88b1f)) {
return FS_TARGZ;
}
fseeko(f, offset + 0x400, SEEK_SET);
n = fread(&magic, sizeof(magic), 1, f);
if (n != 1)
return -1;
if (magic == cpu_to_le32(0xF2F52010))
return FS_F2FS;
magic = 0;
fseeko(f, offset + 0x438, SEEK_SET);
n = fread(&magic, sizeof(magic), 1, f);
if (n != 1)
return -1;
if ((le32_to_cpu(magic) & 0xffff) == 0xef53)
return FS_EXT4;
return FS_NONE;
}
static bool use_f2fs(struct volume *v, uint64_t offset, const char *bdev)
{
uint64_t size = 0;
bool ret = false;
int fd;
fd = open(bdev, O_RDONLY);
if (fd < 0)
return false;
if (ioctl(fd, BLKGETSIZE64, &size) == 0)
ret = size - offset > F2FS_MINSIZE;
close(fd);
return ret;
}
int block_volume_format(struct volume *v, uint64_t offset, const char *bdev)
{
int ret = 0;
char str[128];
switch (volume_identify(v)) {
case FS_TARGZ:
snprintf(str, sizeof(str), "gzip -cd %s > /tmp/sysupgrade.tar", v->blk);
system(str);
/* fall-through */
case FS_NONE:
ULOG_INFO("overlay filesystem in %s has not been formatted yet\n", v->blk);
if (use_f2fs(v, offset, bdev))
snprintf(str, sizeof(str), "mkfs.f2fs -q -l rootfs_data %s", v->blk);
else
snprintf(str, sizeof(str), "mkfs.ext4 -q -L rootfs_data %s", v->blk);
ret = system(str);
break;
default:
break;
}
return ret;
}
|
