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64#include "libbb.h"
65
66#ifndef __packed
67# define __packed __attribute__((packed))
68#endif
69#include <mtd/ubi-user.h>
70
71#define UBI_APPLET_CNT (0 \
72 + ENABLE_UBIATTACH \
73 + ENABLE_UBIDETACH \
74 + ENABLE_UBIMKVOL \
75 + ENABLE_UBIRMVOL \
76 + ENABLE_UBIRSVOL \
77 + ENABLE_UBIUPDATEVOL \
78 )
79
80#define do_attach (ENABLE_UBIATTACH && (UBI_APPLET_CNT == 1 || applet_name[4] == 't'))
81#define do_detach (ENABLE_UBIDETACH && (UBI_APPLET_CNT == 1 || applet_name[4] == 'e'))
82#define do_mkvol (ENABLE_UBIMKVOL && (UBI_APPLET_CNT == 1 || applet_name[4] == 'k'))
83#define do_rmvol (ENABLE_UBIRMVOL && (UBI_APPLET_CNT == 1 || applet_name[4] == 'm'))
84#define do_rsvol (ENABLE_UBIRSVOL && (UBI_APPLET_CNT == 1 || applet_name[4] == 's'))
85#define do_update (ENABLE_UBIUPDATEVOL && (UBI_APPLET_CNT == 1 || applet_name[4] == 'p'))
86
87static unsigned get_num_from_file(const char *path, unsigned max)
88{
89 char buf[sizeof(long long)*3];
90 unsigned long long num;
91
92 if (open_read_close(path, buf, sizeof(buf)) < 0)
93 bb_perror_msg_and_die("can't open '%s'", path);
94
95 if (sscanf(buf, "%llu", &num) != 1 || num > max)
96 bb_error_msg_and_die("number in '%s' is malformed or too large", path);
97 return num;
98}
99
100
101#define MAX_SANE_ERASEBLOCK (16*1024*1024)
102
103int ubi_tools_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
104int ubi_tools_main(int argc UNUSED_PARAM, char **argv)
105{
106 static const struct suffix_mult size_suffixes[] = {
107 { "KiB", 1024 },
108 { "MiB", 1024*1024 },
109 { "GiB", 1024*1024*1024 },
110 { "", 0 }
111 };
112
113 unsigned opts;
114 char *ubi_ctrl;
115 int fd;
116 int mtd_num;
117 int dev_num = UBI_DEV_NUM_AUTO;
118 int vol_id = UBI_VOL_NUM_AUTO;
119 int vid_hdr_offset = 0;
120 char *vol_name;
121 unsigned long long size_bytes = size_bytes;
122 char *size_bytes_str;
123 int alignment = 1;
124 char *type;
125 union {
126 struct ubi_attach_req attach_req;
127 struct ubi_mkvol_req mkvol_req;
128 struct ubi_rsvol_req rsvol_req;
129 } req_structs;
130#define attach_req req_structs.attach_req
131#define mkvol_req req_structs.mkvol_req
132#define rsvol_req req_structs.rsvol_req
133 char path[sizeof("/sys/class/ubi/ubi%d_%d/usable_eb_size")
134 + 2 * sizeof(int)*3 + 16];
135#define path_sys_class_ubi_ubi (path + sizeof("/sys/class/ubi/ubi")-1)
136
137 strcpy(path, "/sys/class/ubi/ubi");
138 memset(&req_structs, 0, sizeof(req_structs));
139
140#define OPTION_m (1 << 0)
141#define OPTION_d (1 << 1)
142#define OPTION_n (1 << 2)
143#define OPTION_N (1 << 3)
144#define OPTION_s (1 << 4)
145#define OPTION_a (1 << 5)
146#define OPTION_t (1 << 6)
147 if (do_mkvol) {
148 opts = getopt32(argv, "^" "md:+n:+N:s:a:+t:O:+" "\0" "-1",
149 &dev_num, &vol_id,
150 &vol_name, &size_bytes_str, &alignment, &type,
151 &vid_hdr_offset
152 );
153 } else
154 if (do_update) {
155 opts = getopt32(argv, "^" "s:at" "\0" "-1", &size_bytes_str);
156 opts *= OPTION_s;
157 } else {
158 opts = getopt32(argv, "^" "m:+d:+n:+N:s:a:+t:" "\0" "-1",
159 &mtd_num, &dev_num, &vol_id,
160 &vol_name, &size_bytes_str, &alignment, &type
161 );
162 }
163
164 if (opts & OPTION_s)
165 size_bytes = xatoull_sfx(size_bytes_str, size_suffixes);
166 argv += optind;
167 ubi_ctrl = *argv++;
168
169 fd = xopen(ubi_ctrl, O_RDWR);
170
171
172
173
174
175
176
177
178
179
180
181 if (do_attach) {
182 if (!(opts & OPTION_m))
183 bb_error_msg_and_die("%s device not specified", "MTD");
184
185 attach_req.mtd_num = mtd_num;
186 attach_req.ubi_num = dev_num;
187 attach_req.vid_hdr_offset = vid_hdr_offset;
188
189 xioctl(fd, UBI_IOCATT, &attach_req);
190 } else
191
192
193
194
195
196
197 if (do_detach) {
198 if (!(opts & OPTION_d))
199 bb_error_msg_and_die("%s device not specified", "UBI");
200
201
202 xioctl(fd, UBI_IOCDET, &dev_num);
203 } else
204
205
206
207
208
209
210
211
212
213
214
215
216 if (do_mkvol) {
217 if (opts & OPTION_m) {
218 unsigned leb_avail;
219 unsigned leb_size;
220 unsigned num;
221 char *p;
222
223 num = ubi_devnum_from_devname(ubi_ctrl);
224 p = path_sys_class_ubi_ubi + sprintf(path_sys_class_ubi_ubi, "%u/", num);
225
226 strcpy(p, "avail_eraseblocks");
227 leb_avail = get_num_from_file(path, UINT_MAX);
228
229 strcpy(p, "eraseblock_size");
230 leb_size = get_num_from_file(path, MAX_SANE_ERASEBLOCK);
231
232 size_bytes = leb_avail * (unsigned long long)leb_size;
233
234
235 } else
236 if (!(opts & OPTION_s))
237 bb_error_msg_and_die("size not specified");
238
239 if (!(opts & OPTION_N))
240 bb_error_msg_and_die("name not specified");
241
242
243 mkvol_req.vol_id = vol_id;
244 mkvol_req.vol_type = UBI_DYNAMIC_VOLUME;
245 if ((opts & OPTION_t) && type[0] == 's')
246 mkvol_req.vol_type = UBI_STATIC_VOLUME;
247 mkvol_req.alignment = alignment;
248 mkvol_req.bytes = size_bytes;
249
250 mkvol_req.name_len = strnlen(vol_name, UBI_MAX_VOLUME_NAME+1);
251 if (mkvol_req.name_len > UBI_MAX_VOLUME_NAME)
252 bb_error_msg_and_die("volume name too long: '%s'", vol_name);
253
254 strcpy(mkvol_req.name, vol_name);
255
256 xioctl(fd, UBI_IOCMKVOL, &mkvol_req);
257 } else
258
259
260
261
262
263
264
265 if (do_rmvol) {
266 if (!(opts & (OPTION_n|OPTION_N)))
267 bb_error_msg_and_die("volume id not specified");
268
269 if (opts & OPTION_N) {
270 unsigned num = ubi_devnum_from_devname(ubi_ctrl);
271 vol_id = ubi_get_volid_by_name(num, vol_name);
272 }
273
274 if (sizeof(vol_id) != 4) {
275
276 int32_t t = vol_id;
277 xioctl(fd, UBI_IOCRMVOL, &t);
278 } else {
279 xioctl(fd, UBI_IOCRMVOL, &vol_id);
280 }
281 } else
282
283
284
285
286
287
288
289 if (do_rsvol) {
290 if (!(opts & OPTION_s))
291 bb_error_msg_and_die("size not specified");
292 if (!(opts & OPTION_n))
293 bb_error_msg_and_die("volume id not specified");
294
295 rsvol_req.bytes = size_bytes;
296 rsvol_req.vol_id = vol_id;
297
298 xioctl(fd, UBI_IOCRSVOL, &rsvol_req);
299 } else
300
301
302
303
304
305
306
307 if (do_update) {
308 int64_t bytes64;
309
310 if (opts & OPTION_t) {
311
312 bytes64 = 0;
313
314 xioctl(fd, UBI_IOCVOLUP, &bytes64);
315 }
316 else {
317 unsigned ubinum, volnum;
318 unsigned leb_size;
319 char *buf;
320
321
322
323 if (sscanf(ubi_ctrl, "/dev/ubi%u_%u", &ubinum, &volnum) != 2)
324 bb_error_msg_and_die("UBI device name '%s' is not /dev/ubiN_M", ubi_ctrl);
325
326 sprintf(path_sys_class_ubi_ubi, "%u_%u/usable_eb_size", ubinum, volnum);
327 leb_size = get_num_from_file(path, MAX_SANE_ERASEBLOCK);
328
329 if (!*argv)
330 bb_show_usage();
331 if (NOT_LONE_DASH(*argv))
332 xmove_fd(xopen(*argv, O_RDONLY), STDIN_FILENO);
333
334 if (!(opts & OPTION_s)) {
335 struct stat st;
336 xfstat(STDIN_FILENO, &st, *argv);
337 size_bytes = st.st_size;
338 }
339
340 bytes64 = size_bytes;
341
342 xioctl(fd, UBI_IOCVOLUP, &bytes64);
343
344
345 buf = xmalloc(leb_size);
346 while (size_bytes != 0) {
347 int len = full_read(STDIN_FILENO, buf, leb_size);
348 if (len <= 0) {
349 if (len < 0)
350 bb_perror_msg_and_die("read error from '%s'", *argv);
351 break;
352 }
353 if ((unsigned)len > size_bytes) {
354
355 len = size_bytes;
356 }
357 xwrite(fd, buf, len);
358 size_bytes -= len;
359 }
360 if (ENABLE_FEATURE_CLEAN_UP)
361 free(buf);
362 }
363 }
364
365 if (ENABLE_FEATURE_CLEAN_UP)
366 close(fd);
367
368 return EXIT_SUCCESS;
369}
370