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fe8c2806 WD |
1 | /* |
2 | ------------------------------------------------------------------------- | |
3 | * Filename: jffs2.c | |
4 | * Version: $Id: jffs2_1pass.c,v 1.7 2002/01/25 01:56:47 nyet Exp $ | |
5 | * Copyright: Copyright (C) 2001, Russ Dill | |
6 | * Author: Russ Dill <Russ.Dill@asu.edu> | |
7 | * Description: Module to load kernel from jffs2 | |
8 | *-----------------------------------------------------------------------*/ | |
9 | /* | |
10 | * some portions of this code are taken from jffs2, and as such, the | |
11 | * following copyright notice is included. | |
12 | * | |
13 | * JFFS2 -- Journalling Flash File System, Version 2. | |
14 | * | |
15 | * Copyright (C) 2001 Red Hat, Inc. | |
16 | * | |
17 | * Created by David Woodhouse <dwmw2@cambridge.redhat.com> | |
18 | * | |
19 | * The original JFFS, from which the design for JFFS2 was derived, | |
20 | * was designed and implemented by Axis Communications AB. | |
21 | * | |
22 | * The contents of this file are subject to the Red Hat eCos Public | |
23 | * License Version 1.1 (the "Licence"); you may not use this file | |
24 | * except in compliance with the Licence. You may obtain a copy of | |
25 | * the Licence at http://www.redhat.com/ | |
26 | * | |
27 | * Software distributed under the Licence is distributed on an "AS IS" | |
28 | * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. | |
29 | * See the Licence for the specific language governing rights and | |
30 | * limitations under the Licence. | |
31 | * | |
32 | * The Original Code is JFFS2 - Journalling Flash File System, version 2 | |
33 | * | |
34 | * Alternatively, the contents of this file may be used under the | |
35 | * terms of the GNU General Public License version 2 (the "GPL"), in | |
36 | * which case the provisions of the GPL are applicable instead of the | |
37 | * above. If you wish to allow the use of your version of this file | |
38 | * only under the terms of the GPL and not to allow others to use your | |
39 | * version of this file under the RHEPL, indicate your decision by | |
40 | * deleting the provisions above and replace them with the notice and | |
41 | * other provisions required by the GPL. If you do not delete the | |
42 | * provisions above, a recipient may use your version of this file | |
43 | * under either the RHEPL or the GPL. | |
44 | * | |
45 | * $Id: jffs2_1pass.c,v 1.7 2002/01/25 01:56:47 nyet Exp $ | |
46 | * | |
47 | */ | |
48 | ||
49 | /* Ok, so anyone who knows the jffs2 code will probably want to get a papar | |
50 | * bag to throw up into before reading this code. I looked through the jffs2 | |
51 | * code, the caching scheme is very elegant. I tried to keep the version | |
52 | * for a bootloader as small and simple as possible. Instead of worring about | |
53 | * unneccesary data copies, node scans, etc, I just optimized for the known | |
54 | * common case, a kernel, which looks like: | |
53677ef1 | 55 | * (1) most pages are 4096 bytes |
fe8c2806 WD |
56 | * (2) version numbers are somewhat sorted in acsending order |
57 | * (3) multiple compressed blocks making up one page is uncommon | |
58 | * | |
59 | * So I create a linked list of decending version numbers (insertions at the | |
60 | * head), and then for each page, walk down the list, until a matching page | |
61 | * with 4096 bytes is found, and then decompress the watching pages in | |
62 | * reverse order. | |
63 | * | |
64 | */ | |
65 | ||
66 | /* | |
67 | * Adapted by Nye Liu <nyet@zumanetworks.com> and | |
68 | * Rex Feany <rfeany@zumanetworks.com> | |
69 | * on Jan/2002 for U-Boot. | |
70 | * | |
71 | * Clipped out all the non-1pass functions, cleaned up warnings, | |
72 | * wrappers, etc. No major changes to the code. | |
73 | * Please, he really means it when he said have a paper bag | |
74 | * handy. We needed it ;). | |
75 | * | |
76 | */ | |
77 | ||
06d01dbe WD |
78 | /* |
79 | * Bugfixing by Kai-Uwe Bloem <kai-uwe.bloem@auerswald.de>, (C) Mar/2003 | |
80 | * | |
81 | * - overhaul of the memory management. Removed much of the "paper-bagging" | |
82 | * in that part of the code, fixed several bugs, now frees memory when | |
83 | * partition is changed. | |
84 | * It's still ugly :-( | |
85 | * - fixed a bug in jffs2_1pass_read_inode where the file length calculation | |
86 | * was incorrect. Removed a bit of the paper-bagging as well. | |
87 | * - removed double crc calculation for fragment headers in jffs2_private.h | |
88 | * for speedup. | |
89 | * - scan_empty rewritten in a more "standard" manner (non-paperbag, that is). | |
90 | * - spinning wheel now spins depending on how much memory has been scanned | |
91 | * - lots of small changes all over the place to "improve" readability. | |
92 | * - implemented fragment sorting to ensure that the newest data is copied | |
93 | * if there are multiple copies of fragments for a certain file offset. | |
94 | * | |
6d0f6bcf | 95 | * The fragment sorting feature must be enabled by CONFIG_SYS_JFFS2_SORT_FRAGMENTS. |
06d01dbe WD |
96 | * Sorting is done while adding fragments to the lists, which is more or less a |
97 | * bubble sort. This takes a lot of time, and is most probably not an issue if | |
98 | * the boot filesystem is always mounted readonly. | |
99 | * | |
100 | * You should define it if the boot filesystem is mounted writable, and updates | |
101 | * to the boot files are done by copying files to that filesystem. | |
102 | * | |
103 | * | |
104 | * There's a big issue left: endianess is completely ignored in this code. Duh! | |
105 | * | |
106 | * | |
107 | * You still should have paper bags at hand :-(. The code lacks more or less | |
108 | * any comment, and is still arcane and difficult to read in places. As this | |
dd875c76 WD |
109 | * might be incompatible with any new code from the jffs2 maintainers anyway, |
110 | * it should probably be dumped and replaced by something like jffs2reader! | |
06d01dbe WD |
111 | */ |
112 | ||
113 | ||
fe8c2806 WD |
114 | #include <common.h> |
115 | #include <config.h> | |
116 | #include <malloc.h> | |
117 | #include <linux/stat.h> | |
118 | #include <linux/time.h> | |
86d3273e | 119 | #include <watchdog.h> |
fe8c2806 WD |
120 | #include <jffs2/jffs2.h> |
121 | #include <jffs2/jffs2_1pass.h> | |
584eedab | 122 | #include <linux/mtd/compat.h> |
8cf19b9f | 123 | #include <asm/errno.h> |
fe8c2806 WD |
124 | |
125 | #include "jffs2_private.h" | |
126 | ||
fe8c2806 | 127 | |
53677ef1 WD |
128 | #define NODE_CHUNK 1024 /* size of memory allocation chunk in b_nodes */ |
129 | #define SPIN_BLKSIZE 18 /* spin after having scanned 1<<BLKSIZE bytes */ | |
06d01dbe WD |
130 | |
131 | /* Debugging switches */ | |
132 | #undef DEBUG_DIRENTS /* print directory entry list after scan */ | |
133 | #undef DEBUG_FRAGMENTS /* print fragment list after scan */ | |
53677ef1 | 134 | #undef DEBUG /* enable debugging messages */ |
06d01dbe | 135 | |
fe8c2806 | 136 | |
fe8c2806 WD |
137 | #ifdef DEBUG |
138 | # define DEBUGF(fmt,args...) printf(fmt ,##args) | |
139 | #else | |
140 | # define DEBUGF(fmt,args...) | |
141 | #endif | |
142 | ||
9b707622 IY |
143 | #include "summary.h" |
144 | ||
700a0c64 WD |
145 | /* keeps pointer to currentlu processed partition */ |
146 | static struct part_info *current_part; | |
998eaaec | 147 | |
e4dbe1b2 | 148 | #if (defined(CONFIG_JFFS2_NAND) && \ |
dd60d122 | 149 | defined(CONFIG_CMD_NAND) ) |
addb2e16 | 150 | #include <nand.h> |
998eaaec WD |
151 | /* |
152 | * Support for jffs2 on top of NAND-flash | |
153 | * | |
154 | * NAND memory isn't mapped in processor's address space, | |
155 | * so data should be fetched from flash before | |
156 | * being processed. This is exactly what functions declared | |
157 | * here do. | |
158 | * | |
159 | */ | |
160 | ||
998eaaec WD |
161 | #define NAND_PAGE_SIZE 512 |
162 | #define NAND_PAGE_SHIFT 9 | |
163 | #define NAND_PAGE_MASK (~(NAND_PAGE_SIZE-1)) | |
164 | ||
165 | #ifndef NAND_CACHE_PAGES | |
166 | #define NAND_CACHE_PAGES 16 | |
167 | #endif | |
168 | #define NAND_CACHE_SIZE (NAND_CACHE_PAGES*NAND_PAGE_SIZE) | |
169 | ||
170 | static u8* nand_cache = NULL; | |
171 | static u32 nand_cache_off = (u32)-1; | |
998eaaec WD |
172 | |
173 | static int read_nand_cached(u32 off, u32 size, u_char *buf) | |
174 | { | |
700a0c64 | 175 | struct mtdids *id = current_part->dev->id; |
998eaaec | 176 | u32 bytes_read = 0; |
6db39708 | 177 | size_t retlen; |
998eaaec WD |
178 | int cpy_bytes; |
179 | ||
180 | while (bytes_read < size) { | |
181 | if ((off + bytes_read < nand_cache_off) || | |
182 | (off + bytes_read >= nand_cache_off+NAND_CACHE_SIZE)) { | |
183 | nand_cache_off = (off + bytes_read) & NAND_PAGE_MASK; | |
184 | if (!nand_cache) { | |
185 | /* This memory never gets freed but 'cause | |
186 | it's a bootloader, nobody cares */ | |
507bbe3e WD |
187 | nand_cache = malloc(NAND_CACHE_SIZE); |
188 | if (!nand_cache) { | |
998eaaec WD |
189 | printf("read_nand_cached: can't alloc cache size %d bytes\n", |
190 | NAND_CACHE_SIZE); | |
191 | return -1; | |
192 | } | |
193 | } | |
addb2e16 BS |
194 | |
195 | retlen = NAND_CACHE_SIZE; | |
196 | if (nand_read(&nand_info[id->num], nand_cache_off, | |
6db39708 | 197 | &retlen, nand_cache) != 0 || |
700a0c64 | 198 | retlen != NAND_CACHE_SIZE) { |
998eaaec | 199 | printf("read_nand_cached: error reading nand off %#x size %d bytes\n", |
700a0c64 | 200 | nand_cache_off, NAND_CACHE_SIZE); |
998eaaec WD |
201 | return -1; |
202 | } | |
203 | } | |
204 | cpy_bytes = nand_cache_off + NAND_CACHE_SIZE - (off + bytes_read); | |
205 | if (cpy_bytes > size - bytes_read) | |
206 | cpy_bytes = size - bytes_read; | |
207 | memcpy(buf + bytes_read, | |
208 | nand_cache + off + bytes_read - nand_cache_off, | |
209 | cpy_bytes); | |
210 | bytes_read += cpy_bytes; | |
211 | } | |
212 | return bytes_read; | |
213 | } | |
214 | ||
700a0c64 | 215 | static void *get_fl_mem_nand(u32 off, u32 size, void *ext_buf) |
998eaaec WD |
216 | { |
217 | u_char *buf = ext_buf ? (u_char*)ext_buf : (u_char*)malloc(size); | |
218 | ||
219 | if (NULL == buf) { | |
700a0c64 | 220 | printf("get_fl_mem_nand: can't alloc %d bytes\n", size); |
998eaaec WD |
221 | return NULL; |
222 | } | |
223 | if (read_nand_cached(off, size, buf) < 0) { | |
32877d66 WD |
224 | if (!ext_buf) |
225 | free(buf); | |
998eaaec WD |
226 | return NULL; |
227 | } | |
228 | ||
229 | return buf; | |
230 | } | |
231 | ||
70741004 | 232 | static void *get_node_mem_nand(u32 off, void *ext_buf) |
998eaaec WD |
233 | { |
234 | struct jffs2_unknown_node node; | |
235 | void *ret = NULL; | |
236 | ||
700a0c64 | 237 | if (NULL == get_fl_mem_nand(off, sizeof(node), &node)) |
998eaaec WD |
238 | return NULL; |
239 | ||
700a0c64 | 240 | if (!(ret = get_fl_mem_nand(off, node.magic == |
998eaaec | 241 | JFFS2_MAGIC_BITMASK ? node.totlen : sizeof(node), |
70741004 | 242 | ext_buf))) { |
998eaaec WD |
243 | printf("off = %#x magic %#x type %#x node.totlen = %d\n", |
244 | off, node.magic, node.nodetype, node.totlen); | |
245 | } | |
246 | return ret; | |
247 | } | |
248 | ||
700a0c64 | 249 | static void put_fl_mem_nand(void *buf) |
998eaaec WD |
250 | { |
251 | free(buf); | |
252 | } | |
dd60d122 | 253 | #endif |
700a0c64 | 254 | |
1a7f8cce KP |
255 | #if defined(CONFIG_CMD_ONENAND) |
256 | ||
257 | #include <linux/mtd/mtd.h> | |
258 | #include <linux/mtd/onenand.h> | |
259 | #include <onenand_uboot.h> | |
260 | ||
261 | #define ONENAND_PAGE_SIZE 2048 | |
262 | #define ONENAND_PAGE_SHIFT 11 | |
263 | #define ONENAND_PAGE_MASK (~(ONENAND_PAGE_SIZE-1)) | |
264 | ||
265 | #ifndef ONENAND_CACHE_PAGES | |
266 | #define ONENAND_CACHE_PAGES 4 | |
267 | #endif | |
268 | #define ONENAND_CACHE_SIZE (ONENAND_CACHE_PAGES*ONENAND_PAGE_SIZE) | |
269 | ||
270 | static u8* onenand_cache; | |
271 | static u32 onenand_cache_off = (u32)-1; | |
272 | ||
273 | static int read_onenand_cached(u32 off, u32 size, u_char *buf) | |
274 | { | |
275 | u32 bytes_read = 0; | |
276 | size_t retlen; | |
277 | int cpy_bytes; | |
278 | ||
279 | while (bytes_read < size) { | |
280 | if ((off + bytes_read < onenand_cache_off) || | |
281 | (off + bytes_read >= onenand_cache_off + ONENAND_CACHE_SIZE)) { | |
282 | onenand_cache_off = (off + bytes_read) & ONENAND_PAGE_MASK; | |
283 | if (!onenand_cache) { | |
284 | /* This memory never gets freed but 'cause | |
285 | it's a bootloader, nobody cares */ | |
286 | onenand_cache = malloc(ONENAND_CACHE_SIZE); | |
287 | if (!onenand_cache) { | |
288 | printf("read_onenand_cached: can't alloc cache size %d bytes\n", | |
289 | ONENAND_CACHE_SIZE); | |
290 | return -1; | |
291 | } | |
292 | } | |
293 | ||
294 | retlen = ONENAND_CACHE_SIZE; | |
295 | if (onenand_read(&onenand_mtd, onenand_cache_off, retlen, | |
296 | &retlen, onenand_cache) != 0 || | |
297 | retlen != ONENAND_CACHE_SIZE) { | |
298 | printf("read_onenand_cached: error reading nand off %#x size %d bytes\n", | |
299 | onenand_cache_off, ONENAND_CACHE_SIZE); | |
300 | return -1; | |
301 | } | |
302 | } | |
303 | cpy_bytes = onenand_cache_off + ONENAND_CACHE_SIZE - (off + bytes_read); | |
304 | if (cpy_bytes > size - bytes_read) | |
305 | cpy_bytes = size - bytes_read; | |
306 | memcpy(buf + bytes_read, | |
307 | onenand_cache + off + bytes_read - onenand_cache_off, | |
308 | cpy_bytes); | |
309 | bytes_read += cpy_bytes; | |
310 | } | |
311 | return bytes_read; | |
312 | } | |
313 | ||
314 | static void *get_fl_mem_onenand(u32 off, u32 size, void *ext_buf) | |
315 | { | |
316 | u_char *buf = ext_buf ? (u_char *)ext_buf : (u_char *)malloc(size); | |
317 | ||
318 | if (NULL == buf) { | |
319 | printf("get_fl_mem_onenand: can't alloc %d bytes\n", size); | |
320 | return NULL; | |
321 | } | |
322 | if (read_onenand_cached(off, size, buf) < 0) { | |
323 | if (!ext_buf) | |
324 | free(buf); | |
325 | return NULL; | |
326 | } | |
327 | ||
328 | return buf; | |
329 | } | |
330 | ||
70741004 | 331 | static void *get_node_mem_onenand(u32 off, void *ext_buf) |
1a7f8cce KP |
332 | { |
333 | struct jffs2_unknown_node node; | |
334 | void *ret = NULL; | |
335 | ||
336 | if (NULL == get_fl_mem_onenand(off, sizeof(node), &node)) | |
337 | return NULL; | |
338 | ||
339 | ret = get_fl_mem_onenand(off, node.magic == | |
340 | JFFS2_MAGIC_BITMASK ? node.totlen : sizeof(node), | |
70741004 | 341 | ext_buf); |
1a7f8cce KP |
342 | if (!ret) { |
343 | printf("off = %#x magic %#x type %#x node.totlen = %d\n", | |
344 | off, node.magic, node.nodetype, node.totlen); | |
345 | } | |
346 | return ret; | |
347 | } | |
348 | ||
349 | ||
350 | static void put_fl_mem_onenand(void *buf) | |
351 | { | |
352 | free(buf); | |
353 | } | |
354 | #endif | |
355 | ||
700a0c64 | 356 | |
dd60d122 | 357 | #if defined(CONFIG_CMD_FLASH) |
700a0c64 WD |
358 | /* |
359 | * Support for jffs2 on top of NOR-flash | |
360 | * | |
361 | * NOR flash memory is mapped in processor's address space, | |
362 | * just return address. | |
363 | */ | |
70741004 | 364 | static inline void *get_fl_mem_nor(u32 off, u32 size, void *ext_buf) |
700a0c64 WD |
365 | { |
366 | u32 addr = off; | |
367 | struct mtdids *id = current_part->dev->id; | |
368 | ||
e6f2e902 | 369 | extern flash_info_t flash_info[]; |
700a0c64 WD |
370 | flash_info_t *flash = &flash_info[id->num]; |
371 | ||
372 | addr += flash->start[0]; | |
70741004 IY |
373 | if (ext_buf) { |
374 | memcpy(ext_buf, (void *)addr, size); | |
375 | return ext_buf; | |
376 | } | |
700a0c64 WD |
377 | return (void*)addr; |
378 | } | |
379 | ||
70741004 | 380 | static inline void *get_node_mem_nor(u32 off, void *ext_buf) |
8a36d31f | 381 | { |
70741004 | 382 | struct jffs2_unknown_node *pNode; |
8a36d31f | 383 | |
70741004 IY |
384 | /* pNode will point directly to flash - don't provide external buffer |
385 | and don't care about size */ | |
386 | pNode = get_fl_mem_nor(off, 0, NULL); | |
387 | return (void *)get_fl_mem_nor(off, pNode->magic == JFFS2_MAGIC_BITMASK ? | |
388 | pNode->totlen : sizeof(*pNode), ext_buf); | |
700a0c64 | 389 | } |
dd60d122 | 390 | #endif |
998eaaec | 391 | |
998eaaec | 392 | |
700a0c64 | 393 | /* |
8f79e4c2 | 394 | * Generic jffs2 raw memory and node read routines. |
700a0c64 WD |
395 | * |
396 | */ | |
998eaaec WD |
397 | static inline void *get_fl_mem(u32 off, u32 size, void *ext_buf) |
398 | { | |
700a0c64 | 399 | struct mtdids *id = current_part->dev->id; |
8f79e4c2 | 400 | |
2d2018f3 | 401 | switch(id->type) { |
dd60d122 | 402 | #if defined(CONFIG_CMD_FLASH) |
2d2018f3 | 403 | case MTD_DEV_TYPE_NOR: |
70741004 | 404 | return get_fl_mem_nor(off, size, ext_buf); |
2d2018f3 | 405 | break; |
700a0c64 | 406 | #endif |
dd60d122 | 407 | #if defined(CONFIG_JFFS2_NAND) && defined(CONFIG_CMD_NAND) |
2d2018f3 | 408 | case MTD_DEV_TYPE_NAND: |
700a0c64 | 409 | return get_fl_mem_nand(off, size, ext_buf); |
2d2018f3 | 410 | break; |
700a0c64 | 411 | #endif |
1a7f8cce | 412 | #if defined(CONFIG_CMD_ONENAND) |
2d2018f3 | 413 | case MTD_DEV_TYPE_ONENAND: |
1a7f8cce | 414 | return get_fl_mem_onenand(off, size, ext_buf); |
2d2018f3 | 415 | break; |
1a7f8cce | 416 | #endif |
2d2018f3 HS |
417 | default: |
418 | printf("get_fl_mem: unknown device type, " \ | |
419 | "using raw offset!\n"); | |
420 | } | |
998eaaec WD |
421 | return (void*)off; |
422 | } | |
423 | ||
70741004 | 424 | static inline void *get_node_mem(u32 off, void *ext_buf) |
998eaaec | 425 | { |
700a0c64 | 426 | struct mtdids *id = current_part->dev->id; |
8f79e4c2 | 427 | |
2d2018f3 | 428 | switch(id->type) { |
dd60d122 | 429 | #if defined(CONFIG_CMD_FLASH) |
2d2018f3 | 430 | case MTD_DEV_TYPE_NOR: |
70741004 | 431 | return get_node_mem_nor(off, ext_buf); |
2d2018f3 | 432 | break; |
700a0c64 | 433 | #endif |
e4dbe1b2 | 434 | #if defined(CONFIG_JFFS2_NAND) && \ |
dd60d122 | 435 | defined(CONFIG_CMD_NAND) |
2d2018f3 | 436 | case MTD_DEV_TYPE_NAND: |
70741004 | 437 | return get_node_mem_nand(off, ext_buf); |
2d2018f3 | 438 | break; |
700a0c64 | 439 | #endif |
1a7f8cce | 440 | #if defined(CONFIG_CMD_ONENAND) |
2d2018f3 | 441 | case MTD_DEV_TYPE_ONENAND: |
70741004 | 442 | return get_node_mem_onenand(off, ext_buf); |
2d2018f3 | 443 | break; |
1a7f8cce | 444 | #endif |
2d2018f3 HS |
445 | default: |
446 | printf("get_fl_mem: unknown device type, " \ | |
447 | "using raw offset!\n"); | |
448 | } | |
998eaaec WD |
449 | return (void*)off; |
450 | } | |
451 | ||
70741004 | 452 | static inline void put_fl_mem(void *buf, void *ext_buf) |
998eaaec | 453 | { |
700a0c64 | 454 | struct mtdids *id = current_part->dev->id; |
998eaaec | 455 | |
70741004 IY |
456 | /* If buf is the same as ext_buf, it was provided by the caller - |
457 | we shouldn't free it then. */ | |
458 | if (buf == ext_buf) | |
459 | return; | |
2f77c7f4 SW |
460 | switch (id->type) { |
461 | #if defined(CONFIG_JFFS2_NAND) && defined(CONFIG_CMD_NAND) | |
462 | case MTD_DEV_TYPE_NAND: | |
700a0c64 WD |
463 | return put_fl_mem_nand(buf); |
464 | #endif | |
1a7f8cce | 465 | #if defined(CONFIG_CMD_ONENAND) |
2f77c7f4 | 466 | case MTD_DEV_TYPE_ONENAND: |
1a7f8cce KP |
467 | return put_fl_mem_onenand(buf); |
468 | #endif | |
2f77c7f4 | 469 | } |
700a0c64 | 470 | } |
fe8c2806 | 471 | |
06d01dbe WD |
472 | /* Compression names */ |
473 | static char *compr_names[] = { | |
474 | "NONE", | |
475 | "ZERO", | |
476 | "RTIME", | |
477 | "RUBINMIPS", | |
478 | "COPY", | |
479 | "DYNRUBIN", | |
07cc0999 | 480 | "ZLIB", |
f0983371 | 481 | #if defined(CONFIG_JFFS2_LZO) |
07cc0999 | 482 | "LZO", |
07cc0999 | 483 | #endif |
06d01dbe WD |
484 | }; |
485 | ||
06d01dbe WD |
486 | /* Memory management */ |
487 | struct mem_block { | |
488 | u32 index; | |
489 | struct mem_block *next; | |
490 | struct b_node nodes[NODE_CHUNK]; | |
491 | }; | |
492 | ||
493 | ||
494 | static void | |
495 | free_nodes(struct b_list *list) | |
496 | { | |
497 | while (list->listMemBase != NULL) { | |
498 | struct mem_block *next = list->listMemBase->next; | |
499 | free( list->listMemBase ); | |
500 | list->listMemBase = next; | |
501 | } | |
502 | } | |
fe8c2806 WD |
503 | |
504 | static struct b_node * | |
06d01dbe | 505 | add_node(struct b_list *list) |
fe8c2806 | 506 | { |
06d01dbe WD |
507 | u32 index = 0; |
508 | struct mem_block *memBase; | |
fe8c2806 WD |
509 | struct b_node *b; |
510 | ||
06d01dbe WD |
511 | memBase = list->listMemBase; |
512 | if (memBase != NULL) | |
513 | index = memBase->index; | |
fe8c2806 WD |
514 | #if 0 |
515 | putLabeledWord("add_node: index = ", index); | |
06d01dbe | 516 | putLabeledWord("add_node: memBase = ", list->listMemBase); |
fe8c2806 WD |
517 | #endif |
518 | ||
06d01dbe WD |
519 | if (memBase == NULL || index >= NODE_CHUNK) { |
520 | /* we need more space before we continue */ | |
521 | memBase = mmalloc(sizeof(struct mem_block)); | |
522 | if (memBase == NULL) { | |
fe8c2806 WD |
523 | putstr("add_node: malloc failed\n"); |
524 | return NULL; | |
525 | } | |
06d01dbe WD |
526 | memBase->next = list->listMemBase; |
527 | index = 0; | |
fe8c2806 WD |
528 | #if 0 |
529 | putLabeledWord("add_node: alloced a new membase at ", *memBase); | |
530 | #endif | |
531 | ||
532 | } | |
533 | /* now we have room to add it. */ | |
06d01dbe WD |
534 | b = &memBase->nodes[index]; |
535 | index ++; | |
fe8c2806 | 536 | |
06d01dbe WD |
537 | memBase->index = index; |
538 | list->listMemBase = memBase; | |
539 | list->listCount++; | |
540 | return b; | |
541 | } | |
fe8c2806 | 542 | |
06d01dbe WD |
543 | static struct b_node * |
544 | insert_node(struct b_list *list, u32 offset) | |
545 | { | |
546 | struct b_node *new; | |
6d0f6bcf | 547 | #ifdef CONFIG_SYS_JFFS2_SORT_FRAGMENTS |
06d01dbe | 548 | struct b_node *b, *prev; |
fe8c2806 WD |
549 | #endif |
550 | ||
06d01dbe WD |
551 | if (!(new = add_node(list))) { |
552 | putstr("add_node failed!\r\n"); | |
553 | return NULL; | |
554 | } | |
555 | new->offset = offset; | |
556 | ||
6d0f6bcf | 557 | #ifdef CONFIG_SYS_JFFS2_SORT_FRAGMENTS |
06d01dbe WD |
558 | if (list->listTail != NULL && list->listCompare(new, list->listTail)) |
559 | prev = list->listTail; | |
560 | else if (list->listLast != NULL && list->listCompare(new, list->listLast)) | |
561 | prev = list->listLast; | |
562 | else | |
563 | prev = NULL; | |
564 | ||
565 | for (b = (prev ? prev->next : list->listHead); | |
566 | b != NULL && list->listCompare(new, b); | |
567 | prev = b, b = b->next) { | |
568 | list->listLoops++; | |
569 | } | |
570 | if (b != NULL) | |
571 | list->listLast = prev; | |
572 | ||
573 | if (b != NULL) { | |
574 | new->next = b; | |
575 | if (prev != NULL) | |
576 | prev->next = new; | |
577 | else | |
578 | list->listHead = new; | |
579 | } else | |
fe8c2806 | 580 | #endif |
06d01dbe WD |
581 | { |
582 | new->next = (struct b_node *) NULL; | |
583 | if (list->listTail != NULL) { | |
584 | list->listTail->next = new; | |
585 | list->listTail = new; | |
586 | } else { | |
587 | list->listTail = list->listHead = new; | |
588 | } | |
589 | } | |
fe8c2806 | 590 | |
06d01dbe | 591 | return new; |
fe8c2806 WD |
592 | } |
593 | ||
6d0f6bcf | 594 | #ifdef CONFIG_SYS_JFFS2_SORT_FRAGMENTS |
7205e407 WD |
595 | /* Sort data entries with the latest version last, so that if there |
596 | * is overlapping data the latest version will be used. | |
597 | */ | |
06d01dbe WD |
598 | static int compare_inodes(struct b_node *new, struct b_node *old) |
599 | { | |
998eaaec WD |
600 | struct jffs2_raw_inode ojNew; |
601 | struct jffs2_raw_inode ojOld; | |
602 | struct jffs2_raw_inode *jNew = | |
603 | (struct jffs2_raw_inode *)get_fl_mem(new->offset, sizeof(ojNew), &ojNew); | |
604 | struct jffs2_raw_inode *jOld = | |
605 | (struct jffs2_raw_inode *)get_fl_mem(old->offset, sizeof(ojOld), &ojOld); | |
06d01dbe | 606 | |
7205e407 | 607 | return jNew->version > jOld->version; |
06d01dbe WD |
608 | } |
609 | ||
7205e407 WD |
610 | /* Sort directory entries so all entries in the same directory |
611 | * with the same name are grouped together, with the latest version | |
612 | * last. This makes it easy to eliminate all but the latest version | |
613 | * by marking the previous version dead by setting the inode to 0. | |
614 | */ | |
06d01dbe WD |
615 | static int compare_dirents(struct b_node *new, struct b_node *old) |
616 | { | |
998eaaec WD |
617 | struct jffs2_raw_dirent ojNew; |
618 | struct jffs2_raw_dirent ojOld; | |
619 | struct jffs2_raw_dirent *jNew = | |
620 | (struct jffs2_raw_dirent *)get_fl_mem(new->offset, sizeof(ojNew), &ojNew); | |
507bbe3e | 621 | struct jffs2_raw_dirent *jOld = |
998eaaec | 622 | (struct jffs2_raw_dirent *)get_fl_mem(old->offset, sizeof(ojOld), &ojOld); |
7205e407 WD |
623 | int cmp; |
624 | ||
625 | /* ascending sort by pino */ | |
626 | if (jNew->pino != jOld->pino) | |
627 | return jNew->pino > jOld->pino; | |
628 | ||
629 | /* pino is the same, so use ascending sort by nsize, so | |
630 | * we don't do strncmp unless we really must. | |
631 | */ | |
632 | if (jNew->nsize != jOld->nsize) | |
633 | return jNew->nsize > jOld->nsize; | |
634 | ||
635 | /* length is also the same, so use ascending sort by name | |
636 | */ | |
77ddac94 | 637 | cmp = strncmp((char *)jNew->name, (char *)jOld->name, jNew->nsize); |
7205e407 WD |
638 | if (cmp != 0) |
639 | return cmp > 0; | |
640 | ||
641 | /* we have duplicate names in this directory, so use ascending | |
642 | * sort by version | |
643 | */ | |
644 | if (jNew->version > jOld->version) { | |
645 | /* since jNew is newer, we know jOld is not valid, so | |
646 | * mark it with inode 0 and it will not be used | |
647 | */ | |
648 | jOld->ino = 0; | |
649 | return 1; | |
650 | } | |
42d1f039 | 651 | |
7205e407 | 652 | return 0; |
06d01dbe WD |
653 | } |
654 | #endif | |
fe8c2806 | 655 | |
700a0c64 WD |
656 | void |
657 | jffs2_free_cache(struct part_info *part) | |
fe8c2806 | 658 | { |
06d01dbe | 659 | struct b_lists *pL; |
fe8c2806 | 660 | |
06d01dbe WD |
661 | if (part->jffs2_priv != NULL) { |
662 | pL = (struct b_lists *)part->jffs2_priv; | |
663 | free_nodes(&pL->frag); | |
664 | free_nodes(&pL->dir); | |
70741004 | 665 | free(pL->readbuf); |
06d01dbe WD |
666 | free(pL); |
667 | } | |
700a0c64 WD |
668 | } |
669 | ||
670 | static u32 | |
671 | jffs_init_1pass_list(struct part_info *part) | |
672 | { | |
673 | struct b_lists *pL; | |
674 | ||
675 | jffs2_free_cache(part); | |
676 | ||
06d01dbe WD |
677 | if (NULL != (part->jffs2_priv = malloc(sizeof(struct b_lists)))) { |
678 | pL = (struct b_lists *)part->jffs2_priv; | |
679 | ||
680 | memset(pL, 0, sizeof(*pL)); | |
6d0f6bcf | 681 | #ifdef CONFIG_SYS_JFFS2_SORT_FRAGMENTS |
06d01dbe WD |
682 | pL->dir.listCompare = compare_dirents; |
683 | pL->frag.listCompare = compare_inodes; | |
684 | #endif | |
fe8c2806 WD |
685 | } |
686 | return 0; | |
687 | } | |
688 | ||
689 | /* find the inode from the slashless name given a parent */ | |
690 | static long | |
691 | jffs2_1pass_read_inode(struct b_lists *pL, u32 inode, char *dest) | |
692 | { | |
693 | struct b_node *b; | |
694 | struct jffs2_raw_inode *jNode; | |
06d01dbe | 695 | u32 totalSize = 0; |
7205e407 | 696 | u32 latestVersion = 0; |
77ddac94 WD |
697 | uchar *lDest; |
698 | uchar *src; | |
fe8c2806 WD |
699 | long ret; |
700 | int i; | |
701 | u32 counter = 0; | |
6d0f6bcf | 702 | #ifdef CONFIG_SYS_JFFS2_SORT_FRAGMENTS |
7205e407 WD |
703 | /* Find file size before loading any data, so fragments that |
704 | * start past the end of file can be ignored. A fragment | |
705 | * that is partially in the file is loaded, so extra data may | |
706 | * be loaded up to the next 4K boundary above the file size. | |
707 | * This shouldn't cause trouble when loading kernel images, so | |
708 | * we will live with it. | |
709 | */ | |
710 | for (b = pL->frag.listHead; b != NULL; b = b->next) { | |
507bbe3e | 711 | jNode = (struct jffs2_raw_inode *) get_fl_mem(b->offset, |
70741004 | 712 | sizeof(struct jffs2_raw_inode), pL->readbuf); |
7205e407 WD |
713 | if ((inode == jNode->ino)) { |
714 | /* get actual file length from the newest node */ | |
715 | if (jNode->version >= latestVersion) { | |
716 | totalSize = jNode->isize; | |
717 | latestVersion = jNode->version; | |
718 | } | |
719 | } | |
70741004 | 720 | put_fl_mem(jNode, pL->readbuf); |
7205e407 WD |
721 | } |
722 | #endif | |
fe8c2806 | 723 | |
06d01dbe | 724 | for (b = pL->frag.listHead; b != NULL; b = b->next) { |
70741004 IY |
725 | jNode = (struct jffs2_raw_inode *) get_node_mem(b->offset, |
726 | pL->readbuf); | |
fe8c2806 | 727 | if ((inode == jNode->ino)) { |
06d01dbe | 728 | #if 0 |
fe8c2806 WD |
729 | putLabeledWord("\r\n\r\nread_inode: totlen = ", jNode->totlen); |
730 | putLabeledWord("read_inode: inode = ", jNode->ino); | |
731 | putLabeledWord("read_inode: version = ", jNode->version); | |
732 | putLabeledWord("read_inode: isize = ", jNode->isize); | |
733 | putLabeledWord("read_inode: offset = ", jNode->offset); | |
734 | putLabeledWord("read_inode: csize = ", jNode->csize); | |
735 | putLabeledWord("read_inode: dsize = ", jNode->dsize); | |
736 | putLabeledWord("read_inode: compr = ", jNode->compr); | |
737 | putLabeledWord("read_inode: usercompr = ", jNode->usercompr); | |
738 | putLabeledWord("read_inode: flags = ", jNode->flags); | |
fe8c2806 | 739 | #endif |
7205e407 | 740 | |
6d0f6bcf | 741 | #ifndef CONFIG_SYS_JFFS2_SORT_FRAGMENTS |
06d01dbe WD |
742 | /* get actual file length from the newest node */ |
743 | if (jNode->version >= latestVersion) { | |
fe8c2806 | 744 | totalSize = jNode->isize; |
06d01dbe | 745 | latestVersion = jNode->version; |
fe8c2806 | 746 | } |
7205e407 | 747 | #endif |
fe8c2806 WD |
748 | |
749 | if(dest) { | |
77ddac94 | 750 | src = ((uchar *) jNode) + sizeof(struct jffs2_raw_inode); |
06d01dbe | 751 | /* ignore data behind latest known EOF */ |
998eaaec | 752 | if (jNode->offset > totalSize) { |
70741004 | 753 | put_fl_mem(jNode, pL->readbuf); |
06d01dbe | 754 | continue; |
998eaaec | 755 | } |
142a80ff IY |
756 | if (b->datacrc == CRC_UNKNOWN) |
757 | b->datacrc = data_crc(jNode) ? | |
758 | CRC_OK : CRC_BAD; | |
759 | if (b->datacrc == CRC_BAD) { | |
70741004 | 760 | put_fl_mem(jNode, pL->readbuf); |
8a36d31f IY |
761 | continue; |
762 | } | |
06d01dbe | 763 | |
77ddac94 | 764 | lDest = (uchar *) (dest + jNode->offset); |
fe8c2806 | 765 | #if 0 |
06d01dbe | 766 | putLabeledWord("read_inode: src = ", src); |
fe8c2806 | 767 | putLabeledWord("read_inode: dest = ", lDest); |
fe8c2806 WD |
768 | #endif |
769 | switch (jNode->compr) { | |
770 | case JFFS2_COMPR_NONE: | |
fe8c2806 WD |
771 | ret = (unsigned long) ldr_memcpy(lDest, src, jNode->dsize); |
772 | break; | |
773 | case JFFS2_COMPR_ZERO: | |
774 | ret = 0; | |
775 | for (i = 0; i < jNode->dsize; i++) | |
776 | *(lDest++) = 0; | |
777 | break; | |
778 | case JFFS2_COMPR_RTIME: | |
779 | ret = 0; | |
780 | rtime_decompress(src, lDest, jNode->csize, jNode->dsize); | |
781 | break; | |
782 | case JFFS2_COMPR_DYNRUBIN: | |
783 | /* this is slow but it works */ | |
784 | ret = 0; | |
785 | dynrubin_decompress(src, lDest, jNode->csize, jNode->dsize); | |
786 | break; | |
787 | case JFFS2_COMPR_ZLIB: | |
788 | ret = zlib_decompress(src, lDest, jNode->csize, jNode->dsize); | |
789 | break; | |
f0983371 | 790 | #if defined(CONFIG_JFFS2_LZO) |
07cc0999 WD |
791 | case JFFS2_COMPR_LZO: |
792 | ret = lzo_decompress(src, lDest, jNode->csize, jNode->dsize); | |
793 | break; | |
794 | #endif | |
fe8c2806 WD |
795 | default: |
796 | /* unknown */ | |
797 | putLabeledWord("UNKOWN COMPRESSION METHOD = ", jNode->compr); | |
70741004 | 798 | put_fl_mem(jNode, pL->readbuf); |
fe8c2806 WD |
799 | return -1; |
800 | break; | |
801 | } | |
802 | } | |
803 | ||
fe8c2806 | 804 | #if 0 |
fe8c2806 WD |
805 | putLabeledWord("read_inode: totalSize = ", totalSize); |
806 | putLabeledWord("read_inode: compr ret = ", ret); | |
807 | #endif | |
808 | } | |
fe8c2806 | 809 | counter++; |
70741004 | 810 | put_fl_mem(jNode, pL->readbuf); |
fe8c2806 | 811 | } |
fe8c2806 WD |
812 | |
813 | #if 0 | |
06d01dbe | 814 | putLabeledWord("read_inode: returning = ", totalSize); |
fe8c2806 | 815 | #endif |
06d01dbe | 816 | return totalSize; |
fe8c2806 WD |
817 | } |
818 | ||
819 | /* find the inode from the slashless name given a parent */ | |
820 | static u32 | |
821 | jffs2_1pass_find_inode(struct b_lists * pL, const char *name, u32 pino) | |
822 | { | |
823 | struct b_node *b; | |
824 | struct jffs2_raw_dirent *jDir; | |
825 | int len; | |
826 | u32 counter; | |
827 | u32 version = 0; | |
828 | u32 inode = 0; | |
829 | ||
830 | /* name is assumed slash free */ | |
831 | len = strlen(name); | |
832 | ||
833 | counter = 0; | |
834 | /* we need to search all and return the inode with the highest version */ | |
06d01dbe | 835 | for(b = pL->dir.listHead; b; b = b->next, counter++) { |
70741004 IY |
836 | jDir = (struct jffs2_raw_dirent *) get_node_mem(b->offset, |
837 | pL->readbuf); | |
06d01dbe WD |
838 | if ((pino == jDir->pino) && (len == jDir->nsize) && |
839 | (jDir->ino) && /* 0 for unlink */ | |
77ddac94 | 840 | (!strncmp((char *)jDir->name, name, len))) { /* a match */ |
998eaaec | 841 | if (jDir->version < version) { |
70741004 | 842 | put_fl_mem(jDir, pL->readbuf); |
7205e407 | 843 | continue; |
998eaaec | 844 | } |
fe8c2806 | 845 | |
7205e407 | 846 | if (jDir->version == version && inode != 0) { |
53677ef1 | 847 | /* I'm pretty sure this isn't legal */ |
fe8c2806 WD |
848 | putstr(" ** ERROR ** "); |
849 | putnstr(jDir->name, jDir->nsize); | |
850 | putLabeledWord(" has dup version =", version); | |
851 | } | |
852 | inode = jDir->ino; | |
853 | version = jDir->version; | |
854 | } | |
855 | #if 0 | |
856 | putstr("\r\nfind_inode:p&l ->"); | |
857 | putnstr(jDir->name, jDir->nsize); | |
858 | putstr("\r\n"); | |
859 | putLabeledWord("pino = ", jDir->pino); | |
860 | putLabeledWord("nsize = ", jDir->nsize); | |
861 | putLabeledWord("b = ", (u32) b); | |
862 | putLabeledWord("counter = ", counter); | |
863 | #endif | |
70741004 | 864 | put_fl_mem(jDir, pL->readbuf); |
fe8c2806 WD |
865 | } |
866 | return inode; | |
867 | } | |
868 | ||
180d3f74 | 869 | char *mkmodestr(unsigned long mode, char *str) |
fe8c2806 | 870 | { |
06d01dbe WD |
871 | static const char *l = "xwr"; |
872 | int mask = 1, i; | |
873 | char c; | |
874 | ||
875 | switch (mode & S_IFMT) { | |
876 | case S_IFDIR: str[0] = 'd'; break; | |
877 | case S_IFBLK: str[0] = 'b'; break; | |
878 | case S_IFCHR: str[0] = 'c'; break; | |
879 | case S_IFIFO: str[0] = 'f'; break; | |
880 | case S_IFLNK: str[0] = 'l'; break; | |
881 | case S_IFSOCK: str[0] = 's'; break; | |
882 | case S_IFREG: str[0] = '-'; break; | |
883 | default: str[0] = '?'; | |
884 | } | |
885 | ||
886 | for(i = 0; i < 9; i++) { | |
887 | c = l[i%3]; | |
888 | str[9-i] = (mode & mask)?c:'-'; | |
889 | mask = mask<<1; | |
890 | } | |
891 | ||
892 | if(mode & S_ISUID) str[3] = (mode & S_IXUSR)?'s':'S'; | |
893 | if(mode & S_ISGID) str[6] = (mode & S_IXGRP)?'s':'S'; | |
894 | if(mode & S_ISVTX) str[9] = (mode & S_IXOTH)?'t':'T'; | |
895 | str[10] = '\0'; | |
896 | return str; | |
fe8c2806 WD |
897 | } |
898 | ||
899 | static inline void dump_stat(struct stat *st, const char *name) | |
900 | { | |
06d01dbe WD |
901 | char str[20]; |
902 | char s[64], *p; | |
fe8c2806 | 903 | |
06d01dbe WD |
904 | if (st->st_mtime == (time_t)(-1)) /* some ctimes really hate -1 */ |
905 | st->st_mtime = 1; | |
fe8c2806 | 906 | |
77ddac94 | 907 | ctime_r((time_t *)&st->st_mtime, s/*,64*/); /* newlib ctime doesn't have buflen */ |
fe8c2806 | 908 | |
06d01dbe WD |
909 | if ((p = strchr(s,'\n')) != NULL) *p = '\0'; |
910 | if ((p = strchr(s,'\r')) != NULL) *p = '\0'; | |
fe8c2806 WD |
911 | |
912 | /* | |
06d01dbe WD |
913 | printf("%6lo %s %8ld %s %s\n", st->st_mode, mkmodestr(st->st_mode, str), |
914 | st->st_size, s, name); | |
fe8c2806 WD |
915 | */ |
916 | ||
06d01dbe | 917 | printf(" %s %8ld %s %s", mkmodestr(st->st_mode,str), st->st_size, s, name); |
fe8c2806 WD |
918 | } |
919 | ||
920 | static inline u32 dump_inode(struct b_lists * pL, struct jffs2_raw_dirent *d, struct jffs2_raw_inode *i) | |
921 | { | |
922 | char fname[256]; | |
923 | struct stat st; | |
924 | ||
925 | if(!d || !i) return -1; | |
926 | ||
77ddac94 | 927 | strncpy(fname, (char *)d->name, d->nsize); |
06d01dbe | 928 | fname[d->nsize] = '\0'; |
fe8c2806 WD |
929 | |
930 | memset(&st,0,sizeof(st)); | |
931 | ||
06d01dbe WD |
932 | st.st_mtime = i->mtime; |
933 | st.st_mode = i->mode; | |
934 | st.st_ino = i->ino; | |
f7384695 | 935 | st.st_size = i->isize; |
fe8c2806 WD |
936 | |
937 | dump_stat(&st, fname); | |
938 | ||
939 | if (d->type == DT_LNK) { | |
940 | unsigned char *src = (unsigned char *) (&i[1]); | |
941 | putstr(" -> "); | |
942 | putnstr(src, (int)i->dsize); | |
943 | } | |
944 | ||
945 | putstr("\r\n"); | |
946 | ||
947 | return 0; | |
948 | } | |
949 | ||
950 | /* list inodes with the given pino */ | |
951 | static u32 | |
952 | jffs2_1pass_list_inodes(struct b_lists * pL, u32 pino) | |
953 | { | |
954 | struct b_node *b; | |
955 | struct jffs2_raw_dirent *jDir; | |
956 | ||
06d01dbe | 957 | for (b = pL->dir.listHead; b; b = b->next) { |
70741004 IY |
958 | jDir = (struct jffs2_raw_dirent *) get_node_mem(b->offset, |
959 | pL->readbuf); | |
06d01dbe WD |
960 | if ((pino == jDir->pino) && (jDir->ino)) { /* ino=0 -> unlink */ |
961 | u32 i_version = 0; | |
998eaaec | 962 | struct jffs2_raw_inode ojNode; |
06d01dbe WD |
963 | struct jffs2_raw_inode *jNode, *i = NULL; |
964 | struct b_node *b2 = pL->frag.listHead; | |
fe8c2806 WD |
965 | |
966 | while (b2) { | |
998eaaec WD |
967 | jNode = (struct jffs2_raw_inode *) |
968 | get_fl_mem(b2->offset, sizeof(ojNode), &ojNode); | |
32877d66 | 969 | if (jNode->ino == jDir->ino && jNode->version >= i_version) { |
f7384695 | 970 | i_version = jNode->version; |
32877d66 | 971 | if (i) |
70741004 | 972 | put_fl_mem(i, NULL); |
cf8bc577 WD |
973 | |
974 | if (jDir->type == DT_LNK) | |
70741004 IY |
975 | i = get_node_mem(b2->offset, |
976 | NULL); | |
cf8bc577 | 977 | else |
70741004 IY |
978 | i = get_fl_mem(b2->offset, |
979 | sizeof(*i), | |
980 | NULL); | |
32877d66 | 981 | } |
fe8c2806 WD |
982 | b2 = b2->next; |
983 | } | |
984 | ||
985 | dump_inode(pL, jDir, i); | |
70741004 | 986 | put_fl_mem(i, NULL); |
fe8c2806 | 987 | } |
70741004 | 988 | put_fl_mem(jDir, pL->readbuf); |
fe8c2806 WD |
989 | } |
990 | return pino; | |
991 | } | |
992 | ||
993 | static u32 | |
994 | jffs2_1pass_search_inode(struct b_lists * pL, const char *fname, u32 pino) | |
995 | { | |
996 | int i; | |
997 | char tmp[256]; | |
998 | char working_tmp[256]; | |
999 | char *c; | |
1000 | ||
1001 | /* discard any leading slash */ | |
1002 | i = 0; | |
1003 | while (fname[i] == '/') | |
1004 | i++; | |
1005 | strcpy(tmp, &fname[i]); | |
1006 | ||
1007 | while ((c = (char *) strchr(tmp, '/'))) /* we are still dired searching */ | |
1008 | { | |
1009 | strncpy(working_tmp, tmp, c - tmp); | |
1010 | working_tmp[c - tmp] = '\0'; | |
1011 | #if 0 | |
1012 | putstr("search_inode: tmp = "); | |
1013 | putstr(tmp); | |
1014 | putstr("\r\n"); | |
1015 | putstr("search_inode: wtmp = "); | |
1016 | putstr(working_tmp); | |
1017 | putstr("\r\n"); | |
1018 | putstr("search_inode: c = "); | |
1019 | putstr(c); | |
1020 | putstr("\r\n"); | |
1021 | #endif | |
1022 | for (i = 0; i < strlen(c) - 1; i++) | |
1023 | tmp[i] = c[i + 1]; | |
1024 | tmp[i] = '\0'; | |
1025 | #if 0 | |
1026 | putstr("search_inode: post tmp = "); | |
1027 | putstr(tmp); | |
1028 | putstr("\r\n"); | |
1029 | #endif | |
1030 | ||
1031 | if (!(pino = jffs2_1pass_find_inode(pL, working_tmp, pino))) { | |
1032 | putstr("find_inode failed for name="); | |
1033 | putstr(working_tmp); | |
1034 | putstr("\r\n"); | |
1035 | return 0; | |
1036 | } | |
1037 | } | |
1038 | /* this is for the bare filename, directories have already been mapped */ | |
1039 | if (!(pino = jffs2_1pass_find_inode(pL, tmp, pino))) { | |
1040 | putstr("find_inode failed for name="); | |
1041 | putstr(tmp); | |
1042 | putstr("\r\n"); | |
1043 | return 0; | |
1044 | } | |
1045 | return pino; | |
1046 | ||
1047 | } | |
1048 | ||
1049 | static u32 | |
1050 | jffs2_1pass_resolve_inode(struct b_lists * pL, u32 ino) | |
1051 | { | |
1052 | struct b_node *b; | |
1053 | struct b_node *b2; | |
1054 | struct jffs2_raw_dirent *jDir; | |
1055 | struct jffs2_raw_inode *jNode; | |
998eaaec WD |
1056 | u8 jDirFoundType = 0; |
1057 | u32 jDirFoundIno = 0; | |
1058 | u32 jDirFoundPino = 0; | |
fe8c2806 WD |
1059 | char tmp[256]; |
1060 | u32 version = 0; | |
1061 | u32 pino; | |
1062 | unsigned char *src; | |
1063 | ||
1064 | /* we need to search all and return the inode with the highest version */ | |
06d01dbe | 1065 | for(b = pL->dir.listHead; b; b = b->next) { |
70741004 IY |
1066 | jDir = (struct jffs2_raw_dirent *) get_node_mem(b->offset, |
1067 | pL->readbuf); | |
fe8c2806 | 1068 | if (ino == jDir->ino) { |
53677ef1 | 1069 | if (jDir->version < version) { |
70741004 | 1070 | put_fl_mem(jDir, pL->readbuf); |
7205e407 | 1071 | continue; |
998eaaec | 1072 | } |
fe8c2806 | 1073 | |
998eaaec | 1074 | if (jDir->version == version && jDirFoundType) { |
53677ef1 | 1075 | /* I'm pretty sure this isn't legal */ |
fe8c2806 WD |
1076 | putstr(" ** ERROR ** "); |
1077 | putnstr(jDir->name, jDir->nsize); | |
1078 | putLabeledWord(" has dup version (resolve) = ", | |
1079 | version); | |
1080 | } | |
1081 | ||
998eaaec WD |
1082 | jDirFoundType = jDir->type; |
1083 | jDirFoundIno = jDir->ino; | |
1084 | jDirFoundPino = jDir->pino; | |
fe8c2806 WD |
1085 | version = jDir->version; |
1086 | } | |
70741004 | 1087 | put_fl_mem(jDir, pL->readbuf); |
fe8c2806 WD |
1088 | } |
1089 | /* now we found the right entry again. (shoulda returned inode*) */ | |
998eaaec WD |
1090 | if (jDirFoundType != DT_LNK) |
1091 | return jDirFoundIno; | |
06d01dbe WD |
1092 | |
1093 | /* it's a soft link so we follow it again. */ | |
1094 | b2 = pL->frag.listHead; | |
fe8c2806 | 1095 | while (b2) { |
70741004 IY |
1096 | jNode = (struct jffs2_raw_inode *) get_node_mem(b2->offset, |
1097 | pL->readbuf); | |
998eaaec | 1098 | if (jNode->ino == jDirFoundIno) { |
2729af9d | 1099 | src = (unsigned char *)jNode + sizeof(struct jffs2_raw_inode); |
fe8c2806 WD |
1100 | |
1101 | #if 0 | |
1102 | putLabeledWord("\t\t dsize = ", jNode->dsize); | |
1103 | putstr("\t\t target = "); | |
1104 | putnstr(src, jNode->dsize); | |
1105 | putstr("\r\n"); | |
1106 | #endif | |
77ddac94 | 1107 | strncpy(tmp, (char *)src, jNode->dsize); |
fe8c2806 | 1108 | tmp[jNode->dsize] = '\0'; |
70741004 | 1109 | put_fl_mem(jNode, pL->readbuf); |
fe8c2806 WD |
1110 | break; |
1111 | } | |
1112 | b2 = b2->next; | |
70741004 | 1113 | put_fl_mem(jNode, pL->readbuf); |
fe8c2806 WD |
1114 | } |
1115 | /* ok so the name of the new file to find is in tmp */ | |
1116 | /* if it starts with a slash it is root based else shared dirs */ | |
1117 | if (tmp[0] == '/') | |
1118 | pino = 1; | |
1119 | else | |
998eaaec | 1120 | pino = jDirFoundPino; |
fe8c2806 WD |
1121 | |
1122 | return jffs2_1pass_search_inode(pL, tmp, pino); | |
1123 | } | |
1124 | ||
1125 | static u32 | |
1126 | jffs2_1pass_search_list_inodes(struct b_lists * pL, const char *fname, u32 pino) | |
1127 | { | |
1128 | int i; | |
1129 | char tmp[256]; | |
1130 | char working_tmp[256]; | |
1131 | char *c; | |
1132 | ||
1133 | /* discard any leading slash */ | |
1134 | i = 0; | |
1135 | while (fname[i] == '/') | |
1136 | i++; | |
1137 | strcpy(tmp, &fname[i]); | |
1138 | working_tmp[0] = '\0'; | |
1139 | while ((c = (char *) strchr(tmp, '/'))) /* we are still dired searching */ | |
1140 | { | |
1141 | strncpy(working_tmp, tmp, c - tmp); | |
1142 | working_tmp[c - tmp] = '\0'; | |
1143 | for (i = 0; i < strlen(c) - 1; i++) | |
1144 | tmp[i] = c[i + 1]; | |
1145 | tmp[i] = '\0'; | |
1146 | /* only a failure if we arent looking at top level */ | |
06d01dbe WD |
1147 | if (!(pino = jffs2_1pass_find_inode(pL, working_tmp, pino)) && |
1148 | (working_tmp[0])) { | |
fe8c2806 WD |
1149 | putstr("find_inode failed for name="); |
1150 | putstr(working_tmp); | |
1151 | putstr("\r\n"); | |
1152 | return 0; | |
1153 | } | |
1154 | } | |
1155 | ||
1156 | if (tmp[0] && !(pino = jffs2_1pass_find_inode(pL, tmp, pino))) { | |
1157 | putstr("find_inode failed for name="); | |
1158 | putstr(tmp); | |
1159 | putstr("\r\n"); | |
1160 | return 0; | |
1161 | } | |
1162 | /* this is for the bare filename, directories have already been mapped */ | |
1163 | if (!(pino = jffs2_1pass_list_inodes(pL, pino))) { | |
1164 | putstr("find_inode failed for name="); | |
1165 | putstr(tmp); | |
1166 | putstr("\r\n"); | |
1167 | return 0; | |
1168 | } | |
1169 | return pino; | |
1170 | ||
1171 | } | |
1172 | ||
1173 | unsigned char | |
1174 | jffs2_1pass_rescan_needed(struct part_info *part) | |
1175 | { | |
1176 | struct b_node *b; | |
998eaaec | 1177 | struct jffs2_unknown_node onode; |
fe8c2806 | 1178 | struct jffs2_unknown_node *node; |
06d01dbe | 1179 | struct b_lists *pL = (struct b_lists *)part->jffs2_priv; |
fe8c2806 WD |
1180 | |
1181 | if (part->jffs2_priv == 0){ | |
1182 | DEBUGF ("rescan: First time in use\n"); | |
1183 | return 1; | |
1184 | } | |
700a0c64 | 1185 | |
fe8c2806 | 1186 | /* if we have no list, we need to rescan */ |
06d01dbe | 1187 | if (pL->frag.listCount == 0) { |
fe8c2806 WD |
1188 | DEBUGF ("rescan: fraglist zero\n"); |
1189 | return 1; | |
1190 | } | |
1191 | ||
06d01dbe WD |
1192 | /* but suppose someone reflashed a partition at the same offset... */ |
1193 | b = pL->dir.listHead; | |
fe8c2806 | 1194 | while (b) { |
998eaaec WD |
1195 | node = (struct jffs2_unknown_node *) get_fl_mem(b->offset, |
1196 | sizeof(onode), &onode); | |
fe8c2806 | 1197 | if (node->nodetype != JFFS2_NODETYPE_DIRENT) { |
06d01dbe WD |
1198 | DEBUGF ("rescan: fs changed beneath me? (%lx)\n", |
1199 | (unsigned long) b->offset); | |
fe8c2806 WD |
1200 | return 1; |
1201 | } | |
1202 | b = b->next; | |
1203 | } | |
1204 | return 0; | |
1205 | } | |
1206 | ||
8cf19b9f IY |
1207 | #ifdef CONFIG_JFFS2_SUMMARY |
1208 | static u32 sum_get_unaligned32(u32 *ptr) | |
1209 | { | |
1210 | u32 val; | |
1211 | u8 *p = (u8 *)ptr; | |
1212 | ||
1213 | val = *p | (*(p + 1) << 8) | (*(p + 2) << 16) | (*(p + 3) << 24); | |
1214 | ||
1215 | return __le32_to_cpu(val); | |
1216 | } | |
1217 | ||
1218 | static u16 sum_get_unaligned16(u16 *ptr) | |
1219 | { | |
1220 | u16 val; | |
1221 | u8 *p = (u8 *)ptr; | |
1222 | ||
1223 | val = *p | (*(p + 1) << 8); | |
1224 | ||
1225 | return __le16_to_cpu(val); | |
1226 | } | |
1227 | ||
9b707622 | 1228 | #define dbg_summary(...) do {} while (0); |
8cf19b9f IY |
1229 | /* |
1230 | * Process the stored summary information - helper function for | |
9b707622 IY |
1231 | * jffs2_sum_scan_sumnode() |
1232 | */ | |
1233 | ||
1234 | static int jffs2_sum_process_sum_data(struct part_info *part, uint32_t offset, | |
1235 | struct jffs2_raw_summary *summary, | |
1236 | struct b_lists *pL) | |
1237 | { | |
1238 | void *sp; | |
8cf19b9f IY |
1239 | int i, pass; |
1240 | void *ret; | |
9b707622 | 1241 | |
8cf19b9f IY |
1242 | for (pass = 0; pass < 2; pass++) { |
1243 | sp = summary->sum; | |
9b707622 | 1244 | |
8cf19b9f IY |
1245 | for (i = 0; i < summary->sum_num; i++) { |
1246 | struct jffs2_sum_unknown_flash *spu = sp; | |
1247 | dbg_summary("processing summary index %d\n", i); | |
9b707622 | 1248 | |
8cf19b9f IY |
1249 | switch (sum_get_unaligned16(&spu->nodetype)) { |
1250 | case JFFS2_NODETYPE_INODE: { | |
9b707622 | 1251 | struct jffs2_sum_inode_flash *spi; |
8cf19b9f IY |
1252 | if (pass) { |
1253 | spi = sp; | |
9b707622 | 1254 | |
8cf19b9f IY |
1255 | ret = insert_node(&pL->frag, |
1256 | (u32)part->offset + | |
1257 | offset + | |
1258 | sum_get_unaligned32( | |
1259 | &spi->offset)); | |
1260 | if (ret == NULL) | |
1261 | return -1; | |
1262 | } | |
9b707622 | 1263 | |
8cf19b9f | 1264 | sp += JFFS2_SUMMARY_INODE_SIZE; |
9b707622 | 1265 | |
8cf19b9f IY |
1266 | break; |
1267 | } | |
1268 | case JFFS2_NODETYPE_DIRENT: { | |
1269 | struct jffs2_sum_dirent_flash *spd; | |
1270 | spd = sp; | |
1271 | if (pass) { | |
1272 | ret = insert_node(&pL->dir, | |
1273 | (u32) part->offset + | |
1274 | offset + | |
1275 | sum_get_unaligned32( | |
1276 | &spd->offset)); | |
1277 | if (ret == NULL) | |
1278 | return -1; | |
1279 | } | |
1280 | ||
1281 | sp += JFFS2_SUMMARY_DIRENT_SIZE( | |
1282 | spd->nsize); | |
9b707622 | 1283 | |
8cf19b9f IY |
1284 | break; |
1285 | } | |
1286 | default : { | |
1287 | uint16_t nodetype = sum_get_unaligned16( | |
1288 | &spu->nodetype); | |
1289 | printf("Unsupported node type %x found" | |
1290 | " in summary!\n", | |
1291 | nodetype); | |
1292 | if ((nodetype & JFFS2_COMPAT_MASK) == | |
1293 | JFFS2_FEATURE_INCOMPAT) | |
1294 | return -EIO; | |
1295 | return -EBADMSG; | |
1296 | } | |
9b707622 IY |
1297 | } |
1298 | } | |
1299 | } | |
1300 | return 0; | |
1301 | } | |
1302 | ||
1303 | /* Process the summary node - called from jffs2_scan_eraseblock() */ | |
1304 | int jffs2_sum_scan_sumnode(struct part_info *part, uint32_t offset, | |
1305 | struct jffs2_raw_summary *summary, uint32_t sumsize, | |
1306 | struct b_lists *pL) | |
1307 | { | |
1308 | struct jffs2_unknown_node crcnode; | |
1309 | int ret, ofs; | |
1310 | uint32_t crc; | |
1311 | ||
1312 | ofs = part->sector_size - sumsize; | |
1313 | ||
1314 | dbg_summary("summary found for 0x%08x at 0x%08x (0x%x bytes)\n", | |
1315 | offset, offset + ofs, sumsize); | |
1316 | ||
1317 | /* OK, now check for node validity and CRC */ | |
1318 | crcnode.magic = JFFS2_MAGIC_BITMASK; | |
1319 | crcnode.nodetype = JFFS2_NODETYPE_SUMMARY; | |
1320 | crcnode.totlen = summary->totlen; | |
1321 | crc = crc32_no_comp(0, (uchar *)&crcnode, sizeof(crcnode)-4); | |
1322 | ||
1323 | if (summary->hdr_crc != crc) { | |
1324 | dbg_summary("Summary node header is corrupt (bad CRC or " | |
1325 | "no summary at all)\n"); | |
1326 | goto crc_err; | |
1327 | } | |
1328 | ||
1329 | if (summary->totlen != sumsize) { | |
1330 | dbg_summary("Summary node is corrupt (wrong erasesize?)\n"); | |
1331 | goto crc_err; | |
1332 | } | |
1333 | ||
1334 | crc = crc32_no_comp(0, (uchar *)summary, | |
1335 | sizeof(struct jffs2_raw_summary)-8); | |
1336 | ||
1337 | if (summary->node_crc != crc) { | |
1338 | dbg_summary("Summary node is corrupt (bad CRC)\n"); | |
1339 | goto crc_err; | |
1340 | } | |
1341 | ||
1342 | crc = crc32_no_comp(0, (uchar *)summary->sum, | |
1343 | sumsize - sizeof(struct jffs2_raw_summary)); | |
1344 | ||
1345 | if (summary->sum_crc != crc) { | |
1346 | dbg_summary("Summary node data is corrupt (bad CRC)\n"); | |
1347 | goto crc_err; | |
1348 | } | |
1349 | ||
1350 | if (summary->cln_mkr) | |
1351 | dbg_summary("Summary : CLEANMARKER node \n"); | |
1352 | ||
1353 | ret = jffs2_sum_process_sum_data(part, offset, summary, pL); | |
8cf19b9f IY |
1354 | if (ret == -EBADMSG) |
1355 | return 0; | |
9b707622 IY |
1356 | if (ret) |
1357 | return ret; /* real error */ | |
1358 | ||
1359 | return 1; | |
1360 | ||
1361 | crc_err: | |
1362 | putstr("Summary node crc error, skipping summary information.\n"); | |
1363 | ||
1364 | return 0; | |
1365 | } | |
8cf19b9f | 1366 | #endif /* CONFIG_JFFS2_SUMMARY */ |
9b707622 | 1367 | |
06d01dbe WD |
1368 | #ifdef DEBUG_FRAGMENTS |
1369 | static void | |
1370 | dump_fragments(struct b_lists *pL) | |
1371 | { | |
1372 | struct b_node *b; | |
998eaaec | 1373 | struct jffs2_raw_inode ojNode; |
06d01dbe WD |
1374 | struct jffs2_raw_inode *jNode; |
1375 | ||
1376 | putstr("\r\n\r\n******The fragment Entries******\r\n"); | |
1377 | b = pL->frag.listHead; | |
1378 | while (b) { | |
998eaaec WD |
1379 | jNode = (struct jffs2_raw_inode *) get_fl_mem(b->offset, |
1380 | sizeof(ojNode), &ojNode); | |
06d01dbe WD |
1381 | putLabeledWord("\r\n\tbuild_list: FLASH_OFFSET = ", b->offset); |
1382 | putLabeledWord("\tbuild_list: totlen = ", jNode->totlen); | |
1383 | putLabeledWord("\tbuild_list: inode = ", jNode->ino); | |
1384 | putLabeledWord("\tbuild_list: version = ", jNode->version); | |
1385 | putLabeledWord("\tbuild_list: isize = ", jNode->isize); | |
1386 | putLabeledWord("\tbuild_list: atime = ", jNode->atime); | |
1387 | putLabeledWord("\tbuild_list: offset = ", jNode->offset); | |
1388 | putLabeledWord("\tbuild_list: csize = ", jNode->csize); | |
1389 | putLabeledWord("\tbuild_list: dsize = ", jNode->dsize); | |
1390 | putLabeledWord("\tbuild_list: compr = ", jNode->compr); | |
1391 | putLabeledWord("\tbuild_list: usercompr = ", jNode->usercompr); | |
1392 | putLabeledWord("\tbuild_list: flags = ", jNode->flags); | |
8bde7f77 | 1393 | putLabeledWord("\tbuild_list: offset = ", b->offset); /* FIXME: ? [RS] */ |
06d01dbe WD |
1394 | b = b->next; |
1395 | } | |
1396 | } | |
1397 | #endif | |
1398 | ||
1399 | #ifdef DEBUG_DIRENTS | |
1400 | static void | |
1401 | dump_dirents(struct b_lists *pL) | |
1402 | { | |
1403 | struct b_node *b; | |
1404 | struct jffs2_raw_dirent *jDir; | |
1405 | ||
1406 | putstr("\r\n\r\n******The directory Entries******\r\n"); | |
1407 | b = pL->dir.listHead; | |
1408 | while (b) { | |
70741004 IY |
1409 | jDir = (struct jffs2_raw_dirent *) get_node_mem(b->offset, |
1410 | pL->readbuf); | |
06d01dbe WD |
1411 | putstr("\r\n"); |
1412 | putnstr(jDir->name, jDir->nsize); | |
1413 | putLabeledWord("\r\n\tbuild_list: magic = ", jDir->magic); | |
1414 | putLabeledWord("\tbuild_list: nodetype = ", jDir->nodetype); | |
1415 | putLabeledWord("\tbuild_list: hdr_crc = ", jDir->hdr_crc); | |
1416 | putLabeledWord("\tbuild_list: pino = ", jDir->pino); | |
1417 | putLabeledWord("\tbuild_list: version = ", jDir->version); | |
1418 | putLabeledWord("\tbuild_list: ino = ", jDir->ino); | |
1419 | putLabeledWord("\tbuild_list: mctime = ", jDir->mctime); | |
1420 | putLabeledWord("\tbuild_list: nsize = ", jDir->nsize); | |
1421 | putLabeledWord("\tbuild_list: type = ", jDir->type); | |
1422 | putLabeledWord("\tbuild_list: node_crc = ", jDir->node_crc); | |
1423 | putLabeledWord("\tbuild_list: name_crc = ", jDir->name_crc); | |
53677ef1 | 1424 | putLabeledWord("\tbuild_list: offset = ", b->offset); /* FIXME: ? [RS] */ |
06d01dbe | 1425 | b = b->next; |
70741004 | 1426 | put_fl_mem(jDir, pL->readbuf); |
06d01dbe WD |
1427 | } |
1428 | } | |
1429 | #endif | |
1430 | ||
8a36d31f IY |
1431 | #define DEFAULT_EMPTY_SCAN_SIZE 4096 |
1432 | ||
1433 | static inline uint32_t EMPTY_SCAN_SIZE(uint32_t sector_size) | |
1434 | { | |
1435 | if (sector_size < DEFAULT_EMPTY_SCAN_SIZE) | |
1436 | return sector_size; | |
1437 | else | |
1438 | return DEFAULT_EMPTY_SCAN_SIZE; | |
1439 | } | |
1440 | ||
fe8c2806 WD |
1441 | static u32 |
1442 | jffs2_1pass_build_lists(struct part_info * part) | |
1443 | { | |
1444 | struct b_lists *pL; | |
1445 | struct jffs2_unknown_node *node; | |
8a36d31f IY |
1446 | u32 nr_sectors = part->size/part->sector_size; |
1447 | u32 i; | |
fe8c2806 WD |
1448 | u32 counter4 = 0; |
1449 | u32 counterF = 0; | |
1450 | u32 counterN = 0; | |
70741004 | 1451 | u32 max_totlen = 0; |
8a36d31f IY |
1452 | u32 buf_size = DEFAULT_EMPTY_SCAN_SIZE; |
1453 | char *buf; | |
fe8c2806 WD |
1454 | |
1455 | /* turn off the lcd. Refreshing the lcd adds 50% overhead to the */ | |
1456 | /* jffs2 list building enterprise nope. in newer versions the overhead is */ | |
1457 | /* only about 5 %. not enough to inconvenience people for. */ | |
1458 | /* lcd_off(); */ | |
1459 | ||
1460 | /* if we are building a list we need to refresh the cache. */ | |
fe8c2806 | 1461 | jffs_init_1pass_list(part); |
06d01dbe | 1462 | pL = (struct b_lists *)part->jffs2_priv; |
8a36d31f | 1463 | buf = malloc(buf_size); |
4b9206ed | 1464 | puts ("Scanning JFFS2 FS: "); |
fe8c2806 WD |
1465 | |
1466 | /* start at the beginning of the partition */ | |
8a36d31f IY |
1467 | for (i = 0; i < nr_sectors; i++) { |
1468 | uint32_t sector_ofs = i * part->sector_size; | |
1469 | uint32_t buf_ofs = sector_ofs; | |
9b707622 | 1470 | uint32_t buf_len; |
8a36d31f | 1471 | uint32_t ofs, prevofs; |
8cf19b9f | 1472 | #ifdef CONFIG_JFFS2_SUMMARY |
9b707622 IY |
1473 | struct jffs2_sum_marker *sm; |
1474 | void *sumptr = NULL; | |
1475 | uint32_t sumlen; | |
1476 | int ret; | |
8cf19b9f | 1477 | #endif |
fc1cfcdb | 1478 | |
86d3273e | 1479 | WATCHDOG_RESET(); |
9b707622 | 1480 | |
8cf19b9f | 1481 | #ifdef CONFIG_JFFS2_SUMMARY |
9b707622 IY |
1482 | buf_len = sizeof(*sm); |
1483 | ||
1484 | /* Read as much as we want into the _end_ of the preallocated | |
1485 | * buffer | |
1486 | */ | |
1487 | get_fl_mem(part->offset + sector_ofs + part->sector_size - | |
1488 | buf_len, buf_len, buf + buf_size - buf_len); | |
1489 | ||
1490 | sm = (void *)buf + buf_size - sizeof(*sm); | |
1491 | if (sm->magic == JFFS2_SUM_MAGIC) { | |
1492 | sumlen = part->sector_size - sm->offset; | |
1493 | sumptr = buf + buf_size - sumlen; | |
1494 | ||
1495 | /* Now, make sure the summary itself is available */ | |
1496 | if (sumlen > buf_size) { | |
1497 | /* Need to kmalloc for this. */ | |
1498 | sumptr = malloc(sumlen); | |
1499 | if (!sumptr) { | |
1500 | putstr("Can't get memory for summary " | |
1501 | "node!\n"); | |
b644006e IY |
1502 | free(buf); |
1503 | jffs2_free_cache(part); | |
9b707622 IY |
1504 | return 0; |
1505 | } | |
1506 | memcpy(sumptr + sumlen - buf_len, buf + | |
1507 | buf_size - buf_len, buf_len); | |
1508 | } | |
1509 | if (buf_len < sumlen) { | |
1510 | /* Need to read more so that the entire summary | |
1511 | * node is present | |
1512 | */ | |
1513 | get_fl_mem(part->offset + sector_ofs + | |
1514 | part->sector_size - sumlen, | |
1515 | sumlen - buf_len, sumptr); | |
1516 | } | |
1517 | } | |
1518 | ||
1519 | if (sumptr) { | |
1520 | ret = jffs2_sum_scan_sumnode(part, sector_ofs, sumptr, | |
1521 | sumlen, pL); | |
1522 | ||
1523 | if (buf_size && sumlen > buf_size) | |
1524 | free(sumptr); | |
b644006e IY |
1525 | if (ret < 0) { |
1526 | free(buf); | |
1527 | jffs2_free_cache(part); | |
9b707622 | 1528 | return 0; |
b644006e | 1529 | } |
9b707622 IY |
1530 | if (ret) |
1531 | continue; | |
1532 | ||
1533 | } | |
8cf19b9f | 1534 | #endif /* CONFIG_JFFS2_SUMMARY */ |
9b707622 IY |
1535 | |
1536 | buf_len = EMPTY_SCAN_SIZE(part->sector_size); | |
1537 | ||
8a36d31f | 1538 | get_fl_mem((u32)part->offset + buf_ofs, buf_len, buf); |
86d3273e | 1539 | |
8a36d31f IY |
1540 | /* We temporarily use 'ofs' as a pointer into the buffer/jeb */ |
1541 | ofs = 0; | |
1542 | ||
1543 | /* Scan only 4KiB of 0xFF before declaring it's empty */ | |
1544 | while (ofs < EMPTY_SCAN_SIZE(part->sector_size) && | |
1545 | *(uint32_t *)(&buf[ofs]) == 0xFFFFFFFF) | |
1546 | ofs += 4; | |
1547 | ||
1548 | if (ofs == EMPTY_SCAN_SIZE(part->sector_size)) | |
1549 | continue; | |
1550 | ||
1551 | ofs += sector_ofs; | |
1552 | prevofs = ofs - 1; | |
1553 | ||
1554 | scan_more: | |
1555 | while (ofs < sector_ofs + part->sector_size) { | |
1556 | if (ofs == prevofs) { | |
1557 | printf("offset %08x already seen, skip\n", ofs); | |
1558 | ofs += 4; | |
1559 | counter4++; | |
1560 | continue; | |
1561 | } | |
1562 | prevofs = ofs; | |
1563 | if (sector_ofs + part->sector_size < | |
1564 | ofs + sizeof(*node)) | |
1565 | break; | |
1566 | if (buf_ofs + buf_len < ofs + sizeof(*node)) { | |
1567 | buf_len = min_t(uint32_t, buf_size, sector_ofs | |
1568 | + part->sector_size - ofs); | |
1569 | get_fl_mem((u32)part->offset + ofs, buf_len, | |
1570 | buf); | |
1571 | buf_ofs = ofs; | |
1572 | } | |
1573 | ||
1574 | node = (struct jffs2_unknown_node *)&buf[ofs-buf_ofs]; | |
1575 | ||
1576 | if (*(uint32_t *)(&buf[ofs-buf_ofs]) == 0xffffffff) { | |
1577 | uint32_t inbuf_ofs; | |
1578 | uint32_t empty_start, scan_end; | |
1579 | ||
1580 | empty_start = ofs; | |
1581 | ofs += 4; | |
1582 | scan_end = min_t(uint32_t, EMPTY_SCAN_SIZE( | |
1583 | part->sector_size)/8, | |
1584 | buf_len); | |
1585 | more_empty: | |
1586 | inbuf_ofs = ofs - buf_ofs; | |
1587 | while (inbuf_ofs < scan_end) { | |
1588 | if (*(uint32_t *)(&buf[inbuf_ofs]) != | |
1589 | 0xffffffff) | |
1590 | goto scan_more; | |
1591 | ||
1592 | inbuf_ofs += 4; | |
1593 | ofs += 4; | |
1594 | } | |
1595 | /* Ran off end. */ | |
1596 | ||
1597 | /* See how much more there is to read in this | |
1598 | * eraseblock... | |
1599 | */ | |
1600 | buf_len = min_t(uint32_t, buf_size, | |
1601 | sector_ofs + | |
1602 | part->sector_size - ofs); | |
1603 | if (!buf_len) { | |
1604 | /* No more to read. Break out of main | |
1605 | * loop without marking this range of | |
1606 | * empty space as dirty (because it's | |
1607 | * not) | |
1608 | */ | |
1609 | break; | |
1610 | } | |
1611 | scan_end = buf_len; | |
1612 | get_fl_mem((u32)part->offset + ofs, buf_len, | |
1613 | buf); | |
1614 | buf_ofs = ofs; | |
1615 | goto more_empty; | |
1616 | } | |
1617 | if (node->magic != JFFS2_MAGIC_BITMASK || | |
1618 | !hdr_crc(node)) { | |
1619 | ofs += 4; | |
1620 | counter4++; | |
1621 | continue; | |
1622 | } | |
1623 | if (ofs + node->totlen > | |
1624 | sector_ofs + part->sector_size) { | |
1625 | ofs += 4; | |
1626 | counter4++; | |
1627 | continue; | |
1628 | } | |
fe8c2806 | 1629 | /* if its a fragment add it */ |
8a36d31f IY |
1630 | switch (node->nodetype) { |
1631 | case JFFS2_NODETYPE_INODE: | |
1632 | if (buf_ofs + buf_len < ofs + sizeof(struct | |
1633 | jffs2_raw_inode)) { | |
1634 | get_fl_mem((u32)part->offset + ofs, | |
1635 | buf_len, buf); | |
1636 | buf_ofs = ofs; | |
1637 | node = (void *)buf; | |
1638 | } | |
1639 | if (!inode_crc((struct jffs2_raw_inode *) node)) | |
1640 | break; | |
1641 | ||
06d01dbe | 1642 | if (insert_node(&pL->frag, (u32) part->offset + |
b644006e IY |
1643 | ofs) == NULL) { |
1644 | free(buf); | |
1645 | jffs2_free_cache(part); | |
fe8c2806 | 1646 | return 0; |
b644006e | 1647 | } |
70741004 IY |
1648 | if (max_totlen < node->totlen) |
1649 | max_totlen = node->totlen; | |
8a36d31f IY |
1650 | break; |
1651 | case JFFS2_NODETYPE_DIRENT: | |
1652 | if (buf_ofs + buf_len < ofs + sizeof(struct | |
1653 | jffs2_raw_dirent) + | |
1654 | ((struct | |
1655 | jffs2_raw_dirent *) | |
1656 | node)->nsize) { | |
1657 | get_fl_mem((u32)part->offset + ofs, | |
1658 | buf_len, buf); | |
1659 | buf_ofs = ofs; | |
1660 | node = (void *)buf; | |
998eaaec | 1661 | } |
8a36d31f IY |
1662 | |
1663 | if (!dirent_crc((struct jffs2_raw_dirent *) | |
1664 | node) || | |
1665 | !dirent_name_crc( | |
1666 | (struct | |
1667 | jffs2_raw_dirent *) | |
1668 | node)) | |
1669 | break; | |
fc1cfcdb | 1670 | if (! (counterN%100)) |
4b9206ed | 1671 | puts ("\b\b. "); |
06d01dbe | 1672 | if (insert_node(&pL->dir, (u32) part->offset + |
b644006e IY |
1673 | ofs) == NULL) { |
1674 | free(buf); | |
1675 | jffs2_free_cache(part); | |
fe8c2806 | 1676 | return 0; |
b644006e | 1677 | } |
70741004 IY |
1678 | if (max_totlen < node->totlen) |
1679 | max_totlen = node->totlen; | |
fe8c2806 | 1680 | counterN++; |
8a36d31f IY |
1681 | break; |
1682 | case JFFS2_NODETYPE_CLEANMARKER: | |
fe8c2806 | 1683 | if (node->totlen != sizeof(struct jffs2_unknown_node)) |
06d01dbe | 1684 | printf("OOPS Cleanmarker has bad size " |
b64f190b WD |
1685 | "%d != %zu\n", |
1686 | node->totlen, | |
06d01dbe | 1687 | sizeof(struct jffs2_unknown_node)); |
8a36d31f IY |
1688 | break; |
1689 | case JFFS2_NODETYPE_PADDING: | |
7205e407 WD |
1690 | if (node->totlen < sizeof(struct jffs2_unknown_node)) |
1691 | printf("OOPS Padding has bad size " | |
b64f190b WD |
1692 | "%d < %zu\n", |
1693 | node->totlen, | |
7205e407 | 1694 | sizeof(struct jffs2_unknown_node)); |
8a36d31f | 1695 | break; |
9b707622 IY |
1696 | case JFFS2_NODETYPE_SUMMARY: |
1697 | break; | |
8a36d31f | 1698 | default: |
b64f190b WD |
1699 | printf("Unknown node type: %x len %d offset 0x%x\n", |
1700 | node->nodetype, | |
8a36d31f | 1701 | node->totlen, ofs); |
fe8c2806 | 1702 | } |
8a36d31f | 1703 | ofs += ((node->totlen + 3) & ~3); |
fe8c2806 | 1704 | counterF++; |
fe8c2806 | 1705 | } |
fe8c2806 WD |
1706 | } |
1707 | ||
8a36d31f | 1708 | free(buf); |
fe8c2806 | 1709 | putstr("\b\b done.\r\n"); /* close off the dots */ |
70741004 IY |
1710 | |
1711 | /* We don't care if malloc failed - then each read operation will | |
1712 | * allocate its own buffer as necessary (NAND) or will read directly | |
1713 | * from flash (NOR). | |
1714 | */ | |
1715 | pL->readbuf = malloc(max_totlen); | |
1716 | ||
fe8c2806 WD |
1717 | /* turn the lcd back on. */ |
1718 | /* splash(); */ | |
1719 | ||
1720 | #if 0 | |
06d01dbe WD |
1721 | putLabeledWord("dir entries = ", pL->dir.listCount); |
1722 | putLabeledWord("frag entries = ", pL->frag.listCount); | |
fe8c2806 WD |
1723 | putLabeledWord("+4 increments = ", counter4); |
1724 | putLabeledWord("+file_offset increments = ", counterF); | |
1725 | ||
1726 | #endif | |
1727 | ||
06d01dbe WD |
1728 | #ifdef DEBUG_DIRENTS |
1729 | dump_dirents(pL); | |
1730 | #endif | |
fe8c2806 | 1731 | |
06d01dbe WD |
1732 | #ifdef DEBUG_FRAGMENTS |
1733 | dump_fragments(pL); | |
1734 | #endif | |
fe8c2806 | 1735 | |
fe8c2806 WD |
1736 | /* give visual feedback that we are done scanning the flash */ |
1737 | led_blink(0x0, 0x0, 0x1, 0x1); /* off, forever, on 100ms, off 100ms */ | |
1738 | return 1; | |
1739 | } | |
1740 | ||
1741 | ||
fe8c2806 WD |
1742 | static u32 |
1743 | jffs2_1pass_fill_info(struct b_lists * pL, struct b_jffs2_info * piL) | |
1744 | { | |
1745 | struct b_node *b; | |
998eaaec | 1746 | struct jffs2_raw_inode ojNode; |
fe8c2806 WD |
1747 | struct jffs2_raw_inode *jNode; |
1748 | int i; | |
1749 | ||
fe8c2806 WD |
1750 | for (i = 0; i < JFFS2_NUM_COMPR; i++) { |
1751 | piL->compr_info[i].num_frags = 0; | |
1752 | piL->compr_info[i].compr_sum = 0; | |
1753 | piL->compr_info[i].decompr_sum = 0; | |
1754 | } | |
1755 | ||
06d01dbe | 1756 | b = pL->frag.listHead; |
fe8c2806 | 1757 | while (b) { |
998eaaec WD |
1758 | jNode = (struct jffs2_raw_inode *) get_fl_mem(b->offset, |
1759 | sizeof(ojNode), &ojNode); | |
fe8c2806 WD |
1760 | if (jNode->compr < JFFS2_NUM_COMPR) { |
1761 | piL->compr_info[jNode->compr].num_frags++; | |
1762 | piL->compr_info[jNode->compr].compr_sum += jNode->csize; | |
1763 | piL->compr_info[jNode->compr].decompr_sum += jNode->dsize; | |
1764 | } | |
1765 | b = b->next; | |
1766 | } | |
1767 | return 0; | |
1768 | } | |
1769 | ||
1770 | ||
fe8c2806 WD |
1771 | static struct b_lists * |
1772 | jffs2_get_list(struct part_info * part, const char *who) | |
1773 | { | |
700a0c64 WD |
1774 | /* copy requested part_info struct pointer to global location */ |
1775 | current_part = part; | |
1776 | ||
fe8c2806 WD |
1777 | if (jffs2_1pass_rescan_needed(part)) { |
1778 | if (!jffs2_1pass_build_lists(part)) { | |
1779 | printf("%s: Failed to scan JFFSv2 file structure\n", who); | |
1780 | return NULL; | |
1781 | } | |
1782 | } | |
1783 | return (struct b_lists *)part->jffs2_priv; | |
1784 | } | |
1785 | ||
1786 | ||
1787 | /* Print directory / file contents */ | |
1788 | u32 | |
1789 | jffs2_1pass_ls(struct part_info * part, const char *fname) | |
1790 | { | |
1791 | struct b_lists *pl; | |
87b8bd5a | 1792 | long ret = 1; |
fe8c2806 WD |
1793 | u32 inode; |
1794 | ||
06d01dbe | 1795 | if (! (pl = jffs2_get_list(part, "ls"))) |
fe8c2806 WD |
1796 | return 0; |
1797 | ||
1798 | if (! (inode = jffs2_1pass_search_list_inodes(pl, fname, 1))) { | |
1799 | putstr("ls: Failed to scan jffs2 file structure\r\n"); | |
1800 | return 0; | |
1801 | } | |
fc1cfcdb WD |
1802 | |
1803 | ||
fe8c2806 WD |
1804 | #if 0 |
1805 | putLabeledWord("found file at inode = ", inode); | |
1806 | putLabeledWord("read_inode returns = ", ret); | |
1807 | #endif | |
fc1cfcdb WD |
1808 | |
1809 | return ret; | |
fe8c2806 WD |
1810 | } |
1811 | ||
1812 | ||
fe8c2806 WD |
1813 | /* Load a file from flash into memory. fname can be a full path */ |
1814 | u32 | |
1815 | jffs2_1pass_load(char *dest, struct part_info * part, const char *fname) | |
1816 | { | |
1817 | ||
1818 | struct b_lists *pl; | |
87b8bd5a | 1819 | long ret = 1; |
fe8c2806 WD |
1820 | u32 inode; |
1821 | ||
1822 | if (! (pl = jffs2_get_list(part, "load"))) | |
1823 | return 0; | |
1824 | ||
1825 | if (! (inode = jffs2_1pass_search_inode(pl, fname, 1))) { | |
1826 | putstr("load: Failed to find inode\r\n"); | |
1827 | return 0; | |
1828 | } | |
1829 | ||
1830 | /* Resolve symlinks */ | |
1831 | if (! (inode = jffs2_1pass_resolve_inode(pl, inode))) { | |
1832 | putstr("load: Failed to resolve inode structure\r\n"); | |
1833 | return 0; | |
1834 | } | |
1835 | ||
1836 | if ((ret = jffs2_1pass_read_inode(pl, inode, dest)) < 0) { | |
1837 | putstr("load: Failed to read inode\r\n"); | |
1838 | return 0; | |
1839 | } | |
1840 | ||
1841 | DEBUGF ("load: loaded '%s' to 0x%lx (%ld bytes)\n", fname, | |
1842 | (unsigned long) dest, ret); | |
1843 | return ret; | |
1844 | } | |
1845 | ||
1846 | /* Return information about the fs on this partition */ | |
1847 | u32 | |
1848 | jffs2_1pass_info(struct part_info * part) | |
1849 | { | |
1850 | struct b_jffs2_info info; | |
1851 | struct b_lists *pl; | |
1852 | int i; | |
1853 | ||
1854 | if (! (pl = jffs2_get_list(part, "info"))) | |
1855 | return 0; | |
1856 | ||
1857 | jffs2_1pass_fill_info(pl, &info); | |
06d01dbe | 1858 | for (i = 0; i < JFFS2_NUM_COMPR; i++) { |
4b9206ed WD |
1859 | printf ("Compression: %s\n" |
1860 | "\tfrag count: %d\n" | |
1861 | "\tcompressed sum: %d\n" | |
1862 | "\tuncompressed sum: %d\n", | |
1863 | compr_names[i], | |
1864 | info.compr_info[i].num_frags, | |
1865 | info.compr_info[i].compr_sum, | |
1866 | info.compr_info[i].decompr_sum); | |
fe8c2806 WD |
1867 | } |
1868 | return 1; | |
1869 | } |