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
|
/*
* Copyright (C) 2007 Nokia Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 51
* Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
* An utility to delete UBI devices (detach MTD devices from UBI).
*
* Author: Artem Bityutskiy
*/
#include <stdio.h>
#include <stdint.h>
#include <getopt.h>
#include <stdlib.h>
#include <string.h>
#include <libubi.h>
#include "common.h"
#define PROGRAM_VERSION "1.0"
#define PROGRAM_NAME "ubidetach"
/* The variables below are set by command line arguments */
struct args {
int devn;
int mtdn;
const char *node;
const char *dev;
};
static struct args args = {
.devn = UBI_DEV_NUM_AUTO,
.mtdn = -1,
.node = NULL,
.dev = NULL,
};
static const char *doc = PROGRAM_NAME " version " PROGRAM_VERSION
" - a tool to remove UBI devices (detach MTD devices from UBI)";
static const char *optionsstr =
"-d, --devn=<UBI device number> UBI device number to delete\n"
"-p, --dev-path=<path to device> or alternatively, MTD device node path to detach\n"
"-m, --mtdn=<MTD device number> or alternatively, MTD device number to detach\n"
"-h, --help print help message\n"
"-V, --version print program version";
static const char *usage =
"Usage: " PROGRAM_NAME " <UBI control device node file name>\n"
"\t[-d <UBI device number>] [-m <MTD device number>] [-p <path to device>]\n"
"\t[--devn=<UBI device number>] [--mtdn=<MTD device number>]\n"
"\t[--dev-path=<path to device>]\n"
"Example 1: " PROGRAM_NAME " /dev/ubi_ctrl -p /dev/mtd0 - detach MTD device /dev/mtd0\n"
"Example 2: " PROGRAM_NAME " /dev/ubi_ctrl -d 2 - delete UBI device 2 (ubi2)\n"
"Example 3: " PROGRAM_NAME " /dev/ubi_ctrl -m 0 - detach MTD device 0 (mtd0)";
static const struct option long_options[] = {
{ .name = "devn", .has_arg = 1, .flag = NULL, .val = 'd' },
{ .name = "dev-path", .has_arg = 1, .flag = NULL, .val = 'p' },
{ .name = "mtdn", .has_arg = 1, .flag = NULL, .val = 'm' },
{ .name = "help", .has_arg = 0, .flag = NULL, .val = 'h' },
{ .name = "version", .has_arg = 0, .flag = NULL, .val = 'V' },
{ NULL, 0, NULL, 0},
};
static int parse_opt(int argc, char * const argv[])
{
while (1) {
int key;
char *endp;
key = getopt_long(argc, argv, "p:m:d:hV", long_options, NULL);
if (key == -1)
break;
switch (key) {
case 'p':
args.dev = optarg;
break;
case 'd':
args.devn = strtoul(optarg, &endp, 0);
if (*endp != '\0' || endp == optarg || args.devn < 0)
return errmsg("bad UBI device number: \"%s\"", optarg);
break;
case 'm':
args.mtdn = strtoul(optarg, &endp, 0);
if (*endp != '\0' || endp == optarg || args.mtdn < 0)
return errmsg("bad MTD device number: \"%s\"", optarg);
break;
case 'h':
fprintf(stderr, "%s\n\n", doc);
fprintf(stderr, "%s\n\n", usage);
fprintf(stderr, "%s\n", optionsstr);
exit(EXIT_SUCCESS);
case 'V':
fprintf(stderr, "%s\n", PROGRAM_VERSION);
exit(EXIT_SUCCESS);
case ':':
return errmsg("parameter is missing");
default:
fprintf(stderr, "Use -h for help\n");
return -1;
}
}
if (optind == argc)
return errmsg("UBI control device name was not specified (use -h for help)");
else if (optind != argc - 1)
return errmsg("more then one UBI control device specified (use -h for help)");
if (args.mtdn == -1 && args.devn == -1 && args.dev == NULL)
return errmsg("neither MTD nor UBI devices were specified (use -h for help)");
if (args.devn != -1) {
if (args.mtdn != -1 || args.dev != NULL)
return errmsg("specify either MTD or UBI device (use -h for help)");
} else if (args.mtdn != -1 && args.dev != NULL)
return errmsg("specify either MTD number or device node (use -h for help)");
args.node = argv[optind];
return 0;
}
int main(int argc, char * const argv[])
{
int err;
libubi_t libubi;
struct ubi_info ubi_info;
err = parse_opt(argc, argv);
if (err)
return -1;
libubi = libubi_open();
if (!libubi) {
if (errno == 0)
return errmsg("UBI is not present in the system");
return sys_errmsg("cannot open libubi");
}
/*
* Make sure the kernel is fresh enough and this feature is supported.
*/
err = ubi_get_info(libubi, &ubi_info);
if (err) {
sys_errmsg("cannot get UBI information");
goto out_libubi;
}
if (ubi_info.ctrl_major == -1) {
errmsg("MTD detach/detach feature is not supported by your kernel");
goto out_libubi;
}
if (args.devn != -1) {
err = ubi_remove_dev(libubi, args.node, args.devn);
if (err) {
sys_errmsg("cannot remove ubi%d", args.devn);
goto out_libubi;
}
} else {
if (args.dev != NULL) {
err = ubi_detach(libubi, args.node, args.dev);
if (err) {
sys_errmsg("cannot detach \"%s\"", args.dev);
goto out_libubi;
}
} else {
err = ubi_detach_mtd(libubi, args.node, args.mtdn);
if (err) {
sys_errmsg("cannot detach mtd%d", args.mtdn);
goto out_libubi;
}
}
}
libubi_close(libubi);
return 0;
out_libubi:
libubi_close(libubi);
return -1;
}
|
