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
215
216
217
218
219
|
/* blkid.c - Prints type, label and UUID of filesystem(s).
*
* Copyright 2013 Brad Conroy <bconroy@uis.edu>
*
* See ftp://ftp.kernel.org/pub/linux/utils/util-linux/v2.24/libblkid-docs/api-index-full.html
USE_BLKID(NEWTOY(blkid, "<1", TOYFLAG_BIN))
USE_BLKID(OLDTOY(fstype, blkid, "<1", TOYFLAG_BIN))
config BLKID
bool "blkid"
default n
help
usage: blkid [block device...]
Prints type, label and UUID of filesystem.
*/
#define FOR_blkid
#include "toys.h"
#define BIT(x) (1<<(x))
#define _MATCH(buf,type,offset,match) (((unsigned type *)&buf[offset])[0]==(match))
#define MATCH2(b,a) (_MATCH(b,a##_TYPE,a##_OFFSET,a##_MAGIC2)||MATCH(b,a))
#define MATCH3(b,a) (_MATCH(b,a##_TYPE,a##_OFFSET,a##_MAGIC3)||MATCH2(b,a))
#define MATCH(b,a) _MATCH(b,a##_TYPE,a##_OFFSET,a##_MAGIC)
/* may need to check endianess for C2I */
#define C2I(a,b,c,d) (a|(b<<8)|(c<<16)|(d<<24))
struct fs_info {
unsigned uuid_off;
unsigned lab_off;
short uuid_t;
short lab_len;
};
#define SET_FS(t) (struct fs_info)t##_INFO
#define ADFS_MAGIC 0xadf5
#define ADFS_TYPE short
#define ADFS_OFFSET 0xc00
#define ADFS_INFO {0,0,0,0} /*todo*/
#define BFS_MAGIC 0x1badface
#define BFS_TYPE long
#define BFS_OFFSET 0
#define BFS_INFO {0,0,0,0}
/*won't fit in 1 toybuf*/
#define BTRFS_MAGIC C2I('_','B','H','R') //'RHB_'
//#define BTRFS_MAGIC2 'M_Sf' /*not currently used*/
//#define BTRFS_OFFSET2 65604 /*not currently used*/
#define BTRFS_TYPE long /*change to long long if full magic used?*/
#define BTRFS_OFFSET 65600
#define BTRFS_INFO {65803,65819,16,256}
#define CRAMFS_MAGIC 0x28cd3d45
#define CRAMFS_MAGIC2 0x453dcd28
#define CRAMFS_TYPE long
#define CRAMFS_OFFSET 0
#define CRAMFS_INFO {0,48,0,16}
#define EXT_MAGIC 0xEF53
#define EXT_MAGIC2 0xEF51
#define EXT_MAGIC3 0x53EF
#define EXT_TYPE short
#define EXT_OFFSET 1080
#define EXT3_BYTE 1116
#define EXT4_BYTE 1120
#define EXT_INFO {1128,1144,16,16}
#define F2FS_MAGIC 0xF2F52010
#define F2FS_TYPE long
#define F2FS_OFFSET 1024
#define F2FS_INFO {1132,1110,16,16}
/*won't fit in 1 toybuf*/
#define JFS_MAGIC C2I('J','S','F','1') //'1SFJ'
#define JFS_TYPE long
#define JFS_OFFSET 32768
#define JFS_INFO {32920,32904,16,16}
#define NILFS_MAGIC 0x3434
#define NILFS_TYPE short
#define NILFS_OFFSET 1030
#define NILFS_INFO {1176,1192,16,80}
#define NTFS_MAGIC C2I('N','T','F','S') //'SFTN'
#define NTFS_TYPE long
#define NTFS_OFFSET 3
#define NTFS_INFO {0x48,0X4D80,8,-8}
/*won't fit in 1 toybuf*/
#define REISER_MAGIC C2I('R','e','I','s') //'sIeR'
#define REISER_TYPE long
#define REISER_OFFSET 8244
#define REISER_INFO {8276,8292,16,16}
#define REISERB_MAGIC REISER_MAGIC //'sIeR'
#define REISERB_TYPE REISER_TYPE
#define REISERB_OFFSET 65588
#define REISERB_INFO {65620,65636,16,16}
#define ROMFS_MAGIC C2I('r','o','m','-') //'-mor'
#define ROMFS_OFFSET 0
#define ROMFS_TYPE long
#define ROMFS_INFO {0,0,0,0}
#define SQUASHFS_OFFSET 0
#define SQUASHFS_TYPE long
#define SQUASHFS_MAGIC 0x73717368
#define SQUASHFS_INFO {0,0,0,0}
#define XIAFS_OFFSET 572
#define XIAFS_TYPE long
#define XIAFS_MAGIC 0x012FD16D
#define XIAFS_INFO {0,0,0,0}
#define XFS_OFFSET 0
#define XFS_TYPE long
#define XFS_MAGIC C2I('X','F','S','B')
#define XFS_INFO {32,108,16,12}
/* hack for NTFS utf16 */
char *toutf8(unsigned short *ws)
{
static char buf[16];
int i=0;
while((buf[i++]=*ws++));
return buf;
}
/* TODO if no args use proc/partitions */
void do_blkid(int fd, char *name)
{
struct fs_info fs;
char *fstype;
unsigned char buf[66560]; /*toybuf is only 4096, could rework logic*/
int sb_read;
sb_read = read(fd, &buf, sizeof(buf));
if (sb_read < 1) return;
if MATCH(buf,ADFS) {
fstype="adfs";
if (CFG_BLKID) fs=SET_FS(ADFS);
} else if MATCH(buf,BFS) {
fstype="bfs";
if (CFG_BLKID) fs=SET_FS(BFS);
} else if MATCH(buf,CRAMFS) {
fstype="cramfs";
if (CFG_BLKID) fs=SET_FS(CRAMFS);
} else if MATCH3(buf,EXT) {
fstype=(buf[EXT3_BYTE]&BIT(2))?((buf[EXT4_BYTE]&BIT(6))?"ext4":"ext3"):"ext2";
if (CFG_BLKID) fs=SET_FS(EXT);
} else if MATCH(buf,F2FS) {
fstype="f2fs";
if (CFG_BLKID) fs=SET_FS(F2FS);
} else if MATCH(buf,NILFS) {
fstype="nilfs";
if (CFG_BLKID) fs=SET_FS(NILFS);
} else if MATCH(buf,NTFS) {
fstype="ntfs";
if (CFG_BLKID) fs=SET_FS(NTFS);
} else if MATCH(buf,XIAFS) {
fstype="xiafs";
if (CFG_BLKID) fs=SET_FS(XIAFS);
/*below here would require more than 1 toybuf*/
} else if MATCH(buf,REISER) {
fstype="reiserfs";
if (CFG_BLKID) fs=SET_FS(REISER);
} else if MATCH(buf,JFS) {
fstype="jfs";
if (CFG_BLKID) fs=SET_FS(JFS);
} else if MATCH(buf,BTRFS) {
fstype="btrfs";
if (CFG_BLKID) fs=SET_FS(BTRFS);
} else if MATCH(buf,REISERB) {
fstype="reiserfs";
if (CFG_BLKID) fs=SET_FS(REISERB);
} else return;
if (CFG_BLKID && !strncmp("blkid",toys.which->name,5) ) {
printf("%s:",name);
if (fs.lab_len > 0)
printf(" LABEL=\"%.*s\"", fs.lab_len, (char *)&buf[fs.lab_off]);
else if (fs.lab_len < 0)
printf(" LABEL=\"%.*s\"", -fs.lab_len,
toutf8((unsigned short *)&buf[fs.lab_off]));
if (fs.uuid_off > 0) {
if (fs.uuid_t == 16)
printf(" UUID=\"%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-"
"%02x%02x%02x%02x%02x%02x\"",
buf[fs.uuid_off], buf[fs.uuid_off+1],
buf[fs.uuid_off+2], buf[fs.uuid_off+3],
buf[fs.uuid_off+4], buf[fs.uuid_off+5],
buf[fs.uuid_off+6], buf[fs.uuid_off+7],
buf[fs.uuid_off+8], buf[fs.uuid_off+9],
buf[fs.uuid_off+10], buf[fs.uuid_off+11],
buf[fs.uuid_off+12], buf[fs.uuid_off+13],
buf[fs.uuid_off+14], buf[fs.uuid_off+15]);
if (fs.uuid_t == 8)
printf(" UUID=\"%02X%02X%02X%02X%02X%02X%02X%02X\"",
buf[fs.uuid_off+7], buf[fs.uuid_off+6],
buf[fs.uuid_off+5], buf[fs.uuid_off+4],
buf[fs.uuid_off+3], buf[fs.uuid_off+2],
buf[fs.uuid_off+1], buf[fs.uuid_off]);
}
printf(" TYPE=\"%s\"",fstype);
/* avoid printf overhead in fstype */
} else write(1,fstype,strlen(fstype));
putchar('\n');
}
void blkid_main(void)
{
loopfiles(toys.optargs, do_blkid);
}
|
