2 -------------------------------------------------------------------------
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 *-----------------------------------------------------------------------*/
10 * some portions of this code are taken from jffs2, and as such, the
11 * following copyright notice is included.
13 * JFFS2 -- Journalling Flash File System, Version 2.
15 * Copyright (C) 2001 Red Hat, Inc.
17 * Created by David Woodhouse <dwmw2@cambridge.redhat.com>
19 * The original JFFS, from which the design for JFFS2 was derived,
20 * was designed and implemented by Axis Communications AB.
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/
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.
32 * The Original Code is JFFS2 - Journalling Flash File System, version 2
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.
45 * $Id: jffs2_1pass.c,v 1.7 2002/01/25 01:56:47 nyet Exp $
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:
55 * (1) most pages are 4096 bytes
56 * (2) version numbers are somewhat sorted in acsending order
57 * (3) multiple compressed blocks making up one page is uncommon
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
67 * Adapted by Nye Liu <nyet@zumanetworks.com> and
68 * Rex Feany <rfeany@zumanetworks.com>
69 * on Jan/2002 for U-Boot.
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 ;).
79 * Bugfixing by Kai-Uwe Bloem <kai-uwe.bloem@auerswald.de>, (C) Mar/2003
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.
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
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.
95 * The fragment sorting feature must be enabled by CONFIG_SYS_JFFS2_SORT_FRAGMENTS.
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.
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.
104 * There's a big issue left: endianess is completely ignored in this code. Duh!
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
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!
118 #include <linux/stat.h>
119 #include <linux/time.h>
120 #include <watchdog.h>
121 #include <jffs2/jffs2.h>
122 #include <jffs2/jffs2_1pass.h>
123 #include <linux/compat.h>
124 #include <asm/errno.h>
126 #include "jffs2_private.h"
129 #define NODE_CHUNK 1024 /* size of memory allocation chunk in b_nodes */
130 #define SPIN_BLKSIZE 18 /* spin after having scanned 1<<BLKSIZE bytes */
132 /* Debugging switches */
133 #undef DEBUG_DIRENTS /* print directory entry list after scan */
134 #undef DEBUG_FRAGMENTS /* print fragment list after scan */
135 #undef DEBUG /* enable debugging messages */
139 # define DEBUGF(fmt,args...) printf(fmt ,##args)
141 # define DEBUGF(fmt,args...)
146 /* keeps pointer to currentlu processed partition */
147 static struct part_info
*current_part
;
149 #if (defined(CONFIG_JFFS2_NAND) && \
150 defined(CONFIG_CMD_NAND) )
153 * Support for jffs2 on top of NAND-flash
155 * NAND memory isn't mapped in processor's address space,
156 * so data should be fetched from flash before
157 * being processed. This is exactly what functions declared
162 #define NAND_PAGE_SIZE 512
163 #define NAND_PAGE_SHIFT 9
164 #define NAND_PAGE_MASK (~(NAND_PAGE_SIZE-1))
166 #ifndef NAND_CACHE_PAGES
167 #define NAND_CACHE_PAGES 16
169 #define NAND_CACHE_SIZE (NAND_CACHE_PAGES*NAND_PAGE_SIZE)
171 static u8
* nand_cache
= NULL
;
172 static u32 nand_cache_off
= (u32
)-1;
174 static int read_nand_cached(u32 off
, u32 size
, u_char
*buf
)
176 struct mtdids
*id
= current_part
->dev
->id
;
181 while (bytes_read
< size
) {
182 if ((off
+ bytes_read
< nand_cache_off
) ||
183 (off
+ bytes_read
>= nand_cache_off
+NAND_CACHE_SIZE
)) {
184 nand_cache_off
= (off
+ bytes_read
) & NAND_PAGE_MASK
;
186 /* This memory never gets freed but 'cause
187 it's a bootloader, nobody cares */
188 nand_cache
= malloc(NAND_CACHE_SIZE
);
190 printf("read_nand_cached: can't alloc cache size %d bytes\n",
196 retlen
= NAND_CACHE_SIZE
;
197 if (nand_read(&nand_info
[id
->num
], nand_cache_off
,
198 &retlen
, nand_cache
) != 0 ||
199 retlen
!= NAND_CACHE_SIZE
) {
200 printf("read_nand_cached: error reading nand off %#x size %d bytes\n",
201 nand_cache_off
, NAND_CACHE_SIZE
);
205 cpy_bytes
= nand_cache_off
+ NAND_CACHE_SIZE
- (off
+ bytes_read
);
206 if (cpy_bytes
> size
- bytes_read
)
207 cpy_bytes
= size
- bytes_read
;
208 memcpy(buf
+ bytes_read
,
209 nand_cache
+ off
+ bytes_read
- nand_cache_off
,
211 bytes_read
+= cpy_bytes
;
216 static void *get_fl_mem_nand(u32 off
, u32 size
, void *ext_buf
)
218 u_char
*buf
= ext_buf
? (u_char
*)ext_buf
: (u_char
*)malloc(size
);
221 printf("get_fl_mem_nand: can't alloc %d bytes\n", size
);
224 if (read_nand_cached(off
, size
, buf
) < 0) {
233 static void *get_node_mem_nand(u32 off
, void *ext_buf
)
235 struct jffs2_unknown_node node
;
238 if (NULL
== get_fl_mem_nand(off
, sizeof(node
), &node
))
241 if (!(ret
= get_fl_mem_nand(off
, node
.magic
==
242 JFFS2_MAGIC_BITMASK
? node
.totlen
: sizeof(node
),
244 printf("off = %#x magic %#x type %#x node.totlen = %d\n",
245 off
, node
.magic
, node
.nodetype
, node
.totlen
);
250 static void put_fl_mem_nand(void *buf
)
256 #if defined(CONFIG_CMD_ONENAND)
258 #include <linux/mtd/mtd.h>
259 #include <linux/mtd/onenand.h>
260 #include <onenand_uboot.h>
262 #define ONENAND_PAGE_SIZE 2048
263 #define ONENAND_PAGE_SHIFT 11
264 #define ONENAND_PAGE_MASK (~(ONENAND_PAGE_SIZE-1))
266 #ifndef ONENAND_CACHE_PAGES
267 #define ONENAND_CACHE_PAGES 4
269 #define ONENAND_CACHE_SIZE (ONENAND_CACHE_PAGES*ONENAND_PAGE_SIZE)
271 static u8
* onenand_cache
;
272 static u32 onenand_cache_off
= (u32
)-1;
274 static int read_onenand_cached(u32 off
, u32 size
, u_char
*buf
)
280 while (bytes_read
< size
) {
281 if ((off
+ bytes_read
< onenand_cache_off
) ||
282 (off
+ bytes_read
>= onenand_cache_off
+ ONENAND_CACHE_SIZE
)) {
283 onenand_cache_off
= (off
+ bytes_read
) & ONENAND_PAGE_MASK
;
284 if (!onenand_cache
) {
285 /* This memory never gets freed but 'cause
286 it's a bootloader, nobody cares */
287 onenand_cache
= malloc(ONENAND_CACHE_SIZE
);
288 if (!onenand_cache
) {
289 printf("read_onenand_cached: can't alloc cache size %d bytes\n",
295 retlen
= ONENAND_CACHE_SIZE
;
296 if (onenand_read(&onenand_mtd
, onenand_cache_off
, retlen
,
297 &retlen
, onenand_cache
) != 0 ||
298 retlen
!= ONENAND_CACHE_SIZE
) {
299 printf("read_onenand_cached: error reading nand off %#x size %d bytes\n",
300 onenand_cache_off
, ONENAND_CACHE_SIZE
);
304 cpy_bytes
= onenand_cache_off
+ ONENAND_CACHE_SIZE
- (off
+ bytes_read
);
305 if (cpy_bytes
> size
- bytes_read
)
306 cpy_bytes
= size
- bytes_read
;
307 memcpy(buf
+ bytes_read
,
308 onenand_cache
+ off
+ bytes_read
- onenand_cache_off
,
310 bytes_read
+= cpy_bytes
;
315 static void *get_fl_mem_onenand(u32 off
, u32 size
, void *ext_buf
)
317 u_char
*buf
= ext_buf
? (u_char
*)ext_buf
: (u_char
*)malloc(size
);
320 printf("get_fl_mem_onenand: can't alloc %d bytes\n", size
);
323 if (read_onenand_cached(off
, size
, buf
) < 0) {
332 static void *get_node_mem_onenand(u32 off
, void *ext_buf
)
334 struct jffs2_unknown_node node
;
337 if (NULL
== get_fl_mem_onenand(off
, sizeof(node
), &node
))
340 ret
= get_fl_mem_onenand(off
, node
.magic
==
341 JFFS2_MAGIC_BITMASK
? node
.totlen
: sizeof(node
),
344 printf("off = %#x magic %#x type %#x node.totlen = %d\n",
345 off
, node
.magic
, node
.nodetype
, node
.totlen
);
351 static void put_fl_mem_onenand(void *buf
)
358 #if defined(CONFIG_CMD_FLASH)
360 * Support for jffs2 on top of NOR-flash
362 * NOR flash memory is mapped in processor's address space,
363 * just return address.
365 static inline void *get_fl_mem_nor(u32 off
, u32 size
, void *ext_buf
)
368 struct mtdids
*id
= current_part
->dev
->id
;
370 extern flash_info_t flash_info
[];
371 flash_info_t
*flash
= &flash_info
[id
->num
];
373 addr
+= flash
->start
[0];
375 memcpy(ext_buf
, (void *)addr
, size
);
381 static inline void *get_node_mem_nor(u32 off
, void *ext_buf
)
383 struct jffs2_unknown_node
*pNode
;
385 /* pNode will point directly to flash - don't provide external buffer
386 and don't care about size */
387 pNode
= get_fl_mem_nor(off
, 0, NULL
);
388 return (void *)get_fl_mem_nor(off
, pNode
->magic
== JFFS2_MAGIC_BITMASK
?
389 pNode
->totlen
: sizeof(*pNode
), ext_buf
);
395 * Generic jffs2 raw memory and node read routines.
398 static inline void *get_fl_mem(u32 off
, u32 size
, void *ext_buf
)
400 struct mtdids
*id
= current_part
->dev
->id
;
403 #if defined(CONFIG_CMD_FLASH)
404 case MTD_DEV_TYPE_NOR
:
405 return get_fl_mem_nor(off
, size
, ext_buf
);
408 #if defined(CONFIG_JFFS2_NAND) && defined(CONFIG_CMD_NAND)
409 case MTD_DEV_TYPE_NAND
:
410 return get_fl_mem_nand(off
, size
, ext_buf
);
413 #if defined(CONFIG_CMD_ONENAND)
414 case MTD_DEV_TYPE_ONENAND
:
415 return get_fl_mem_onenand(off
, size
, ext_buf
);
419 printf("get_fl_mem: unknown device type, " \
420 "using raw offset!\n");
425 static inline void *get_node_mem(u32 off
, void *ext_buf
)
427 struct mtdids
*id
= current_part
->dev
->id
;
430 #if defined(CONFIG_CMD_FLASH)
431 case MTD_DEV_TYPE_NOR
:
432 return get_node_mem_nor(off
, ext_buf
);
435 #if defined(CONFIG_JFFS2_NAND) && \
436 defined(CONFIG_CMD_NAND)
437 case MTD_DEV_TYPE_NAND
:
438 return get_node_mem_nand(off
, ext_buf
);
441 #if defined(CONFIG_CMD_ONENAND)
442 case MTD_DEV_TYPE_ONENAND
:
443 return get_node_mem_onenand(off
, ext_buf
);
447 printf("get_fl_mem: unknown device type, " \
448 "using raw offset!\n");
453 static inline void put_fl_mem(void *buf
, void *ext_buf
)
455 struct mtdids
*id
= current_part
->dev
->id
;
457 /* If buf is the same as ext_buf, it was provided by the caller -
458 we shouldn't free it then. */
462 #if defined(CONFIG_JFFS2_NAND) && defined(CONFIG_CMD_NAND)
463 case MTD_DEV_TYPE_NAND
:
464 return put_fl_mem_nand(buf
);
466 #if defined(CONFIG_CMD_ONENAND)
467 case MTD_DEV_TYPE_ONENAND
:
468 return put_fl_mem_onenand(buf
);
473 /* Compression names */
474 static char *compr_names
[] = {
482 #if defined(CONFIG_JFFS2_LZO)
487 /* Memory management */
490 struct mem_block
*next
;
491 struct b_node nodes
[NODE_CHUNK
];
496 free_nodes(struct b_list
*list
)
498 while (list
->listMemBase
!= NULL
) {
499 struct mem_block
*next
= list
->listMemBase
->next
;
500 free( list
->listMemBase
);
501 list
->listMemBase
= next
;
505 static struct b_node
*
506 add_node(struct b_list
*list
)
509 struct mem_block
*memBase
;
512 memBase
= list
->listMemBase
;
514 index
= memBase
->index
;
516 putLabeledWord("add_node: index = ", index
);
517 putLabeledWord("add_node: memBase = ", list
->listMemBase
);
520 if (memBase
== NULL
|| index
>= NODE_CHUNK
) {
521 /* we need more space before we continue */
522 memBase
= mmalloc(sizeof(struct mem_block
));
523 if (memBase
== NULL
) {
524 putstr("add_node: malloc failed\n");
527 memBase
->next
= list
->listMemBase
;
530 putLabeledWord("add_node: alloced a new membase at ", *memBase
);
534 /* now we have room to add it. */
535 b
= &memBase
->nodes
[index
];
538 memBase
->index
= index
;
539 list
->listMemBase
= memBase
;
544 static struct b_node
*
545 insert_node(struct b_list
*list
, u32 offset
)
548 #ifdef CONFIG_SYS_JFFS2_SORT_FRAGMENTS
549 struct b_node
*b
, *prev
;
552 if (!(new = add_node(list
))) {
553 putstr("add_node failed!\r\n");
556 new->offset
= offset
;
558 #ifdef CONFIG_SYS_JFFS2_SORT_FRAGMENTS
559 if (list
->listTail
!= NULL
&& list
->listCompare(new, list
->listTail
))
560 prev
= list
->listTail
;
561 else if (list
->listLast
!= NULL
&& list
->listCompare(new, list
->listLast
))
562 prev
= list
->listLast
;
566 for (b
= (prev
? prev
->next
: list
->listHead
);
567 b
!= NULL
&& list
->listCompare(new, b
);
568 prev
= b
, b
= b
->next
) {
572 list
->listLast
= prev
;
579 list
->listHead
= new;
583 new->next
= (struct b_node
*) NULL
;
584 if (list
->listTail
!= NULL
) {
585 list
->listTail
->next
= new;
586 list
->listTail
= new;
588 list
->listTail
= list
->listHead
= new;
595 #ifdef CONFIG_SYS_JFFS2_SORT_FRAGMENTS
596 /* Sort data entries with the latest version last, so that if there
597 * is overlapping data the latest version will be used.
599 static int compare_inodes(struct b_node
*new, struct b_node
*old
)
601 struct jffs2_raw_inode ojNew
;
602 struct jffs2_raw_inode ojOld
;
603 struct jffs2_raw_inode
*jNew
=
604 (struct jffs2_raw_inode
*)get_fl_mem(new->offset
, sizeof(ojNew
), &ojNew
);
605 struct jffs2_raw_inode
*jOld
=
606 (struct jffs2_raw_inode
*)get_fl_mem(old
->offset
, sizeof(ojOld
), &ojOld
);
608 return jNew
->version
> jOld
->version
;
611 /* Sort directory entries so all entries in the same directory
612 * with the same name are grouped together, with the latest version
613 * last. This makes it easy to eliminate all but the latest version
614 * by marking the previous version dead by setting the inode to 0.
616 static int compare_dirents(struct b_node
*new, struct b_node
*old
)
618 struct jffs2_raw_dirent ojNew
;
619 struct jffs2_raw_dirent ojOld
;
620 struct jffs2_raw_dirent
*jNew
=
621 (struct jffs2_raw_dirent
*)get_fl_mem(new->offset
, sizeof(ojNew
), &ojNew
);
622 struct jffs2_raw_dirent
*jOld
=
623 (struct jffs2_raw_dirent
*)get_fl_mem(old
->offset
, sizeof(ojOld
), &ojOld
);
626 /* ascending sort by pino */
627 if (jNew
->pino
!= jOld
->pino
)
628 return jNew
->pino
> jOld
->pino
;
630 /* pino is the same, so use ascending sort by nsize, so
631 * we don't do strncmp unless we really must.
633 if (jNew
->nsize
!= jOld
->nsize
)
634 return jNew
->nsize
> jOld
->nsize
;
636 /* length is also the same, so use ascending sort by name
638 cmp
= strncmp((char *)jNew
->name
, (char *)jOld
->name
, jNew
->nsize
);
642 /* we have duplicate names in this directory, so use ascending
645 if (jNew
->version
> jOld
->version
) {
646 /* since jNew is newer, we know jOld is not valid, so
647 * mark it with inode 0 and it will not be used
658 jffs2_free_cache(struct part_info
*part
)
662 if (part
->jffs2_priv
!= NULL
) {
663 pL
= (struct b_lists
*)part
->jffs2_priv
;
664 free_nodes(&pL
->frag
);
665 free_nodes(&pL
->dir
);
672 jffs_init_1pass_list(struct part_info
*part
)
676 jffs2_free_cache(part
);
678 if (NULL
!= (part
->jffs2_priv
= malloc(sizeof(struct b_lists
)))) {
679 pL
= (struct b_lists
*)part
->jffs2_priv
;
681 memset(pL
, 0, sizeof(*pL
));
682 #ifdef CONFIG_SYS_JFFS2_SORT_FRAGMENTS
683 pL
->dir
.listCompare
= compare_dirents
;
684 pL
->frag
.listCompare
= compare_inodes
;
690 /* find the inode from the slashless name given a parent */
692 jffs2_1pass_read_inode(struct b_lists
*pL
, u32 inode
, char *dest
)
695 struct jffs2_raw_inode
*jNode
;
697 u32 latestVersion
= 0;
702 #ifdef CONFIG_SYS_JFFS2_SORT_FRAGMENTS
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.
710 for (b
= pL
->frag
.listHead
; b
!= NULL
; b
= b
->next
) {
711 jNode
= (struct jffs2_raw_inode
*) get_fl_mem(b
->offset
,
712 sizeof(struct jffs2_raw_inode
), pL
->readbuf
);
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
;
720 put_fl_mem(jNode
, pL
->readbuf
);
724 for (b
= pL
->frag
.listHead
; b
!= NULL
; b
= b
->next
) {
725 jNode
= (struct jffs2_raw_inode
*) get_node_mem(b
->offset
,
727 if (inode
== jNode
->ino
) {
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
);
741 #ifndef CONFIG_SYS_JFFS2_SORT_FRAGMENTS
742 /* get actual file length from the newest node */
743 if (jNode
->version
>= latestVersion
) {
744 totalSize
= jNode
->isize
;
745 latestVersion
= jNode
->version
;
750 src
= ((uchar
*) jNode
) + sizeof(struct jffs2_raw_inode
);
751 /* ignore data behind latest known EOF */
752 if (jNode
->offset
> totalSize
) {
753 put_fl_mem(jNode
, pL
->readbuf
);
756 if (b
->datacrc
== CRC_UNKNOWN
)
757 b
->datacrc
= data_crc(jNode
) ?
759 if (b
->datacrc
== CRC_BAD
) {
760 put_fl_mem(jNode
, pL
->readbuf
);
764 lDest
= (uchar
*) (dest
+ jNode
->offset
);
766 putLabeledWord("read_inode: src = ", src
);
767 putLabeledWord("read_inode: dest = ", lDest
);
769 switch (jNode
->compr
) {
770 case JFFS2_COMPR_NONE
:
771 ldr_memcpy(lDest
, src
, jNode
->dsize
);
773 case JFFS2_COMPR_ZERO
:
774 for (i
= 0; i
< jNode
->dsize
; i
++)
777 case JFFS2_COMPR_RTIME
:
778 rtime_decompress(src
, lDest
, jNode
->csize
, jNode
->dsize
);
780 case JFFS2_COMPR_DYNRUBIN
:
781 /* this is slow but it works */
782 dynrubin_decompress(src
, lDest
, jNode
->csize
, jNode
->dsize
);
784 case JFFS2_COMPR_ZLIB
:
785 zlib_decompress(src
, lDest
, jNode
->csize
, jNode
->dsize
);
787 #if defined(CONFIG_JFFS2_LZO)
788 case JFFS2_COMPR_LZO
:
789 lzo_decompress(src
, lDest
, jNode
->csize
, jNode
->dsize
);
794 putLabeledWord("UNKNOWN COMPRESSION METHOD = ", jNode
->compr
);
795 put_fl_mem(jNode
, pL
->readbuf
);
802 putLabeledWord("read_inode: totalSize = ", totalSize
);
806 put_fl_mem(jNode
, pL
->readbuf
);
810 putLabeledWord("read_inode: returning = ", totalSize
);
815 /* find the inode from the slashless name given a parent */
817 jffs2_1pass_find_inode(struct b_lists
* pL
, const char *name
, u32 pino
)
820 struct jffs2_raw_dirent
*jDir
;
826 /* name is assumed slash free */
830 /* we need to search all and return the inode with the highest version */
831 for(b
= pL
->dir
.listHead
; b
; b
= b
->next
, counter
++) {
832 jDir
= (struct jffs2_raw_dirent
*) get_node_mem(b
->offset
,
834 if ((pino
== jDir
->pino
) && (len
== jDir
->nsize
) &&
835 (jDir
->ino
) && /* 0 for unlink */
836 (!strncmp((char *)jDir
->name
, name
, len
))) { /* a match */
837 if (jDir
->version
< version
) {
838 put_fl_mem(jDir
, pL
->readbuf
);
842 if (jDir
->version
== version
&& inode
!= 0) {
843 /* I'm pretty sure this isn't legal */
844 putstr(" ** ERROR ** ");
845 putnstr(jDir
->name
, jDir
->nsize
);
846 putLabeledWord(" has dup version =", version
);
849 version
= jDir
->version
;
852 putstr("\r\nfind_inode:p&l ->");
853 putnstr(jDir
->name
, jDir
->nsize
);
855 putLabeledWord("pino = ", jDir
->pino
);
856 putLabeledWord("nsize = ", jDir
->nsize
);
857 putLabeledWord("b = ", (u32
) b
);
858 putLabeledWord("counter = ", counter
);
860 put_fl_mem(jDir
, pL
->readbuf
);
865 char *mkmodestr(unsigned long mode
, char *str
)
867 static const char *l
= "xwr";
871 switch (mode
& S_IFMT
) {
872 case S_IFDIR
: str
[0] = 'd'; break;
873 case S_IFBLK
: str
[0] = 'b'; break;
874 case S_IFCHR
: str
[0] = 'c'; break;
875 case S_IFIFO
: str
[0] = 'f'; break;
876 case S_IFLNK
: str
[0] = 'l'; break;
877 case S_IFSOCK
: str
[0] = 's'; break;
878 case S_IFREG
: str
[0] = '-'; break;
879 default: str
[0] = '?';
882 for(i
= 0; i
< 9; i
++) {
884 str
[9-i
] = (mode
& mask
)?c
:'-';
888 if(mode
& S_ISUID
) str
[3] = (mode
& S_IXUSR
)?'s':'S';
889 if(mode
& S_ISGID
) str
[6] = (mode
& S_IXGRP
)?'s':'S';
890 if(mode
& S_ISVTX
) str
[9] = (mode
& S_IXOTH
)?'t':'T';
895 static inline void dump_stat(struct stat
*st
, const char *name
)
900 if (st
->st_mtime
== (time_t)(-1)) /* some ctimes really hate -1 */
903 ctime_r((time_t *)&st
->st_mtime
, s
/*,64*/); /* newlib ctime doesn't have buflen */
905 if ((p
= strchr(s
,'\n')) != NULL
) *p
= '\0';
906 if ((p
= strchr(s
,'\r')) != NULL
) *p
= '\0';
909 printf("%6lo %s %8ld %s %s\n", st->st_mode, mkmodestr(st->st_mode, str),
910 st->st_size, s, name);
913 printf(" %s %8ld %s %s", mkmodestr(st
->st_mode
,str
), st
->st_size
, s
, name
);
916 static inline u32
dump_inode(struct b_lists
* pL
, struct jffs2_raw_dirent
*d
, struct jffs2_raw_inode
*i
)
921 if(!d
|| !i
) return -1;
923 strncpy(fname
, (char *)d
->name
, d
->nsize
);
924 fname
[d
->nsize
] = '\0';
926 memset(&st
,0,sizeof(st
));
928 st
.st_mtime
= i
->mtime
;
929 st
.st_mode
= i
->mode
;
931 st
.st_size
= i
->isize
;
933 dump_stat(&st
, fname
);
935 if (d
->type
== DT_LNK
) {
936 unsigned char *src
= (unsigned char *) (&i
[1]);
938 putnstr(src
, (int)i
->dsize
);
946 /* list inodes with the given pino */
948 jffs2_1pass_list_inodes(struct b_lists
* pL
, u32 pino
)
951 struct jffs2_raw_dirent
*jDir
;
953 for (b
= pL
->dir
.listHead
; b
; b
= b
->next
) {
954 jDir
= (struct jffs2_raw_dirent
*) get_node_mem(b
->offset
,
956 if ((pino
== jDir
->pino
) && (jDir
->ino
)) { /* ino=0 -> unlink */
958 struct jffs2_raw_inode ojNode
;
959 struct jffs2_raw_inode
*jNode
, *i
= NULL
;
960 struct b_node
*b2
= pL
->frag
.listHead
;
963 jNode
= (struct jffs2_raw_inode
*)
964 get_fl_mem(b2
->offset
, sizeof(ojNode
), &ojNode
);
965 if (jNode
->ino
== jDir
->ino
&& jNode
->version
>= i_version
) {
966 i_version
= jNode
->version
;
970 if (jDir
->type
== DT_LNK
)
971 i
= get_node_mem(b2
->offset
,
974 i
= get_fl_mem(b2
->offset
,
981 dump_inode(pL
, jDir
, i
);
984 put_fl_mem(jDir
, pL
->readbuf
);
990 jffs2_1pass_search_inode(struct b_lists
* pL
, const char *fname
, u32 pino
)
994 char working_tmp
[256];
997 /* discard any leading slash */
999 while (fname
[i
] == '/')
1001 strcpy(tmp
, &fname
[i
]);
1003 while ((c
= (char *) strchr(tmp
, '/'))) /* we are still dired searching */
1005 strncpy(working_tmp
, tmp
, c
- tmp
);
1006 working_tmp
[c
- tmp
] = '\0';
1008 putstr("search_inode: tmp = ");
1011 putstr("search_inode: wtmp = ");
1012 putstr(working_tmp
);
1014 putstr("search_inode: c = ");
1018 for (i
= 0; i
< strlen(c
) - 1; i
++)
1022 putstr("search_inode: post tmp = ");
1027 if (!(pino
= jffs2_1pass_find_inode(pL
, working_tmp
, pino
))) {
1028 putstr("find_inode failed for name=");
1029 putstr(working_tmp
);
1034 /* this is for the bare filename, directories have already been mapped */
1035 if (!(pino
= jffs2_1pass_find_inode(pL
, tmp
, pino
))) {
1036 putstr("find_inode failed for name=");
1046 jffs2_1pass_resolve_inode(struct b_lists
* pL
, u32 ino
)
1050 struct jffs2_raw_dirent
*jDir
;
1051 struct jffs2_raw_inode
*jNode
;
1052 u8 jDirFoundType
= 0;
1053 u32 jDirFoundIno
= 0;
1054 u32 jDirFoundPino
= 0;
1060 /* we need to search all and return the inode with the highest version */
1061 for(b
= pL
->dir
.listHead
; b
; b
= b
->next
) {
1062 jDir
= (struct jffs2_raw_dirent
*) get_node_mem(b
->offset
,
1064 if (ino
== jDir
->ino
) {
1065 if (jDir
->version
< version
) {
1066 put_fl_mem(jDir
, pL
->readbuf
);
1070 if (jDir
->version
== version
&& jDirFoundType
) {
1071 /* I'm pretty sure this isn't legal */
1072 putstr(" ** ERROR ** ");
1073 putnstr(jDir
->name
, jDir
->nsize
);
1074 putLabeledWord(" has dup version (resolve) = ",
1078 jDirFoundType
= jDir
->type
;
1079 jDirFoundIno
= jDir
->ino
;
1080 jDirFoundPino
= jDir
->pino
;
1081 version
= jDir
->version
;
1083 put_fl_mem(jDir
, pL
->readbuf
);
1085 /* now we found the right entry again. (shoulda returned inode*) */
1086 if (jDirFoundType
!= DT_LNK
)
1087 return jDirFoundIno
;
1089 /* it's a soft link so we follow it again. */
1090 b2
= pL
->frag
.listHead
;
1092 jNode
= (struct jffs2_raw_inode
*) get_node_mem(b2
->offset
,
1094 if (jNode
->ino
== jDirFoundIno
) {
1095 src
= (unsigned char *)jNode
+ sizeof(struct jffs2_raw_inode
);
1098 putLabeledWord("\t\t dsize = ", jNode
->dsize
);
1099 putstr("\t\t target = ");
1100 putnstr(src
, jNode
->dsize
);
1103 strncpy(tmp
, (char *)src
, jNode
->dsize
);
1104 tmp
[jNode
->dsize
] = '\0';
1105 put_fl_mem(jNode
, pL
->readbuf
);
1109 put_fl_mem(jNode
, pL
->readbuf
);
1111 /* ok so the name of the new file to find is in tmp */
1112 /* if it starts with a slash it is root based else shared dirs */
1116 pino
= jDirFoundPino
;
1118 return jffs2_1pass_search_inode(pL
, tmp
, pino
);
1122 jffs2_1pass_search_list_inodes(struct b_lists
* pL
, const char *fname
, u32 pino
)
1126 char working_tmp
[256];
1129 /* discard any leading slash */
1131 while (fname
[i
] == '/')
1133 strcpy(tmp
, &fname
[i
]);
1134 working_tmp
[0] = '\0';
1135 while ((c
= (char *) strchr(tmp
, '/'))) /* we are still dired searching */
1137 strncpy(working_tmp
, tmp
, c
- tmp
);
1138 working_tmp
[c
- tmp
] = '\0';
1139 for (i
= 0; i
< strlen(c
) - 1; i
++)
1142 /* only a failure if we arent looking at top level */
1143 if (!(pino
= jffs2_1pass_find_inode(pL
, working_tmp
, pino
)) &&
1145 putstr("find_inode failed for name=");
1146 putstr(working_tmp
);
1152 if (tmp
[0] && !(pino
= jffs2_1pass_find_inode(pL
, tmp
, pino
))) {
1153 putstr("find_inode failed for name=");
1158 /* this is for the bare filename, directories have already been mapped */
1159 if (!(pino
= jffs2_1pass_list_inodes(pL
, pino
))) {
1160 putstr("find_inode failed for name=");
1170 jffs2_1pass_rescan_needed(struct part_info
*part
)
1173 struct jffs2_unknown_node onode
;
1174 struct jffs2_unknown_node
*node
;
1175 struct b_lists
*pL
= (struct b_lists
*)part
->jffs2_priv
;
1177 if (part
->jffs2_priv
== 0){
1178 DEBUGF ("rescan: First time in use\n");
1182 /* if we have no list, we need to rescan */
1183 if (pL
->frag
.listCount
== 0) {
1184 DEBUGF ("rescan: fraglist zero\n");
1188 /* but suppose someone reflashed a partition at the same offset... */
1189 b
= pL
->dir
.listHead
;
1191 node
= (struct jffs2_unknown_node
*) get_fl_mem(b
->offset
,
1192 sizeof(onode
), &onode
);
1193 if (node
->nodetype
!= JFFS2_NODETYPE_DIRENT
) {
1194 DEBUGF ("rescan: fs changed beneath me? (%lx)\n",
1195 (unsigned long) b
->offset
);
1203 #ifdef CONFIG_JFFS2_SUMMARY
1204 static u32
sum_get_unaligned32(u32
*ptr
)
1209 val
= *p
| (*(p
+ 1) << 8) | (*(p
+ 2) << 16) | (*(p
+ 3) << 24);
1211 return __le32_to_cpu(val
);
1214 static u16
sum_get_unaligned16(u16
*ptr
)
1219 val
= *p
| (*(p
+ 1) << 8);
1221 return __le16_to_cpu(val
);
1224 #define dbg_summary(...) do {} while (0);
1226 * Process the stored summary information - helper function for
1227 * jffs2_sum_scan_sumnode()
1230 static int jffs2_sum_process_sum_data(struct part_info
*part
, uint32_t offset
,
1231 struct jffs2_raw_summary
*summary
,
1238 for (pass
= 0; pass
< 2; pass
++) {
1241 for (i
= 0; i
< summary
->sum_num
; i
++) {
1242 struct jffs2_sum_unknown_flash
*spu
= sp
;
1243 dbg_summary("processing summary index %d\n", i
);
1245 switch (sum_get_unaligned16(&spu
->nodetype
)) {
1246 case JFFS2_NODETYPE_INODE
: {
1247 struct jffs2_sum_inode_flash
*spi
;
1251 ret
= insert_node(&pL
->frag
,
1254 sum_get_unaligned32(
1260 sp
+= JFFS2_SUMMARY_INODE_SIZE
;
1264 case JFFS2_NODETYPE_DIRENT
: {
1265 struct jffs2_sum_dirent_flash
*spd
;
1268 ret
= insert_node(&pL
->dir
,
1269 (u32
) part
->offset
+
1271 sum_get_unaligned32(
1277 sp
+= JFFS2_SUMMARY_DIRENT_SIZE(
1283 uint16_t nodetype
= sum_get_unaligned16(
1285 printf("Unsupported node type %x found"
1288 if ((nodetype
& JFFS2_COMPAT_MASK
) ==
1289 JFFS2_FEATURE_INCOMPAT
)
1299 /* Process the summary node - called from jffs2_scan_eraseblock() */
1300 int jffs2_sum_scan_sumnode(struct part_info
*part
, uint32_t offset
,
1301 struct jffs2_raw_summary
*summary
, uint32_t sumsize
,
1304 struct jffs2_unknown_node crcnode
;
1308 ofs
= part
->sector_size
- sumsize
;
1310 dbg_summary("summary found for 0x%08x at 0x%08x (0x%x bytes)\n",
1311 offset
, offset
+ ofs
, sumsize
);
1313 /* OK, now check for node validity and CRC */
1314 crcnode
.magic
= JFFS2_MAGIC_BITMASK
;
1315 crcnode
.nodetype
= JFFS2_NODETYPE_SUMMARY
;
1316 crcnode
.totlen
= summary
->totlen
;
1317 crc
= crc32_no_comp(0, (uchar
*)&crcnode
, sizeof(crcnode
)-4);
1319 if (summary
->hdr_crc
!= crc
) {
1320 dbg_summary("Summary node header is corrupt (bad CRC or "
1321 "no summary at all)\n");
1325 if (summary
->totlen
!= sumsize
) {
1326 dbg_summary("Summary node is corrupt (wrong erasesize?)\n");
1330 crc
= crc32_no_comp(0, (uchar
*)summary
,
1331 sizeof(struct jffs2_raw_summary
)-8);
1333 if (summary
->node_crc
!= crc
) {
1334 dbg_summary("Summary node is corrupt (bad CRC)\n");
1338 crc
= crc32_no_comp(0, (uchar
*)summary
->sum
,
1339 sumsize
- sizeof(struct jffs2_raw_summary
));
1341 if (summary
->sum_crc
!= crc
) {
1342 dbg_summary("Summary node data is corrupt (bad CRC)\n");
1346 if (summary
->cln_mkr
)
1347 dbg_summary("Summary : CLEANMARKER node \n");
1349 ret
= jffs2_sum_process_sum_data(part
, offset
, summary
, pL
);
1350 if (ret
== -EBADMSG
)
1353 return ret
; /* real error */
1358 putstr("Summary node crc error, skipping summary information.\n");
1362 #endif /* CONFIG_JFFS2_SUMMARY */
1364 #ifdef DEBUG_FRAGMENTS
1366 dump_fragments(struct b_lists
*pL
)
1369 struct jffs2_raw_inode ojNode
;
1370 struct jffs2_raw_inode
*jNode
;
1372 putstr("\r\n\r\n******The fragment Entries******\r\n");
1373 b
= pL
->frag
.listHead
;
1375 jNode
= (struct jffs2_raw_inode
*) get_fl_mem(b
->offset
,
1376 sizeof(ojNode
), &ojNode
);
1377 putLabeledWord("\r\n\tbuild_list: FLASH_OFFSET = ", b
->offset
);
1378 putLabeledWord("\tbuild_list: totlen = ", jNode
->totlen
);
1379 putLabeledWord("\tbuild_list: inode = ", jNode
->ino
);
1380 putLabeledWord("\tbuild_list: version = ", jNode
->version
);
1381 putLabeledWord("\tbuild_list: isize = ", jNode
->isize
);
1382 putLabeledWord("\tbuild_list: atime = ", jNode
->atime
);
1383 putLabeledWord("\tbuild_list: offset = ", jNode
->offset
);
1384 putLabeledWord("\tbuild_list: csize = ", jNode
->csize
);
1385 putLabeledWord("\tbuild_list: dsize = ", jNode
->dsize
);
1386 putLabeledWord("\tbuild_list: compr = ", jNode
->compr
);
1387 putLabeledWord("\tbuild_list: usercompr = ", jNode
->usercompr
);
1388 putLabeledWord("\tbuild_list: flags = ", jNode
->flags
);
1389 putLabeledWord("\tbuild_list: offset = ", b
->offset
); /* FIXME: ? [RS] */
1395 #ifdef DEBUG_DIRENTS
1397 dump_dirents(struct b_lists
*pL
)
1400 struct jffs2_raw_dirent
*jDir
;
1402 putstr("\r\n\r\n******The directory Entries******\r\n");
1403 b
= pL
->dir
.listHead
;
1405 jDir
= (struct jffs2_raw_dirent
*) get_node_mem(b
->offset
,
1408 putnstr(jDir
->name
, jDir
->nsize
);
1409 putLabeledWord("\r\n\tbuild_list: magic = ", jDir
->magic
);
1410 putLabeledWord("\tbuild_list: nodetype = ", jDir
->nodetype
);
1411 putLabeledWord("\tbuild_list: hdr_crc = ", jDir
->hdr_crc
);
1412 putLabeledWord("\tbuild_list: pino = ", jDir
->pino
);
1413 putLabeledWord("\tbuild_list: version = ", jDir
->version
);
1414 putLabeledWord("\tbuild_list: ino = ", jDir
->ino
);
1415 putLabeledWord("\tbuild_list: mctime = ", jDir
->mctime
);
1416 putLabeledWord("\tbuild_list: nsize = ", jDir
->nsize
);
1417 putLabeledWord("\tbuild_list: type = ", jDir
->type
);
1418 putLabeledWord("\tbuild_list: node_crc = ", jDir
->node_crc
);
1419 putLabeledWord("\tbuild_list: name_crc = ", jDir
->name_crc
);
1420 putLabeledWord("\tbuild_list: offset = ", b
->offset
); /* FIXME: ? [RS] */
1422 put_fl_mem(jDir
, pL
->readbuf
);
1427 #define DEFAULT_EMPTY_SCAN_SIZE 4096
1429 static inline uint32_t EMPTY_SCAN_SIZE(uint32_t sector_size
)
1431 if (sector_size
< DEFAULT_EMPTY_SCAN_SIZE
)
1434 return DEFAULT_EMPTY_SCAN_SIZE
;
1438 jffs2_1pass_build_lists(struct part_info
* part
)
1441 struct jffs2_unknown_node
*node
;
1448 u32 buf_size
= DEFAULT_EMPTY_SCAN_SIZE
;
1451 nr_sectors
= lldiv(part
->size
, part
->sector_size
);
1452 /* turn off the lcd. Refreshing the lcd adds 50% overhead to the */
1453 /* jffs2 list building enterprise nope. in newer versions the overhead is */
1454 /* only about 5 %. not enough to inconvenience people for. */
1457 /* if we are building a list we need to refresh the cache. */
1458 jffs_init_1pass_list(part
);
1459 pL
= (struct b_lists
*)part
->jffs2_priv
;
1460 buf
= malloc(buf_size
);
1461 puts ("Scanning JFFS2 FS: ");
1463 /* start at the beginning of the partition */
1464 for (i
= 0; i
< nr_sectors
; i
++) {
1465 uint32_t sector_ofs
= i
* part
->sector_size
;
1466 uint32_t buf_ofs
= sector_ofs
;
1468 uint32_t ofs
, prevofs
;
1469 #ifdef CONFIG_JFFS2_SUMMARY
1470 struct jffs2_sum_marker
*sm
;
1471 void *sumptr
= NULL
;
1478 #ifdef CONFIG_JFFS2_SUMMARY
1479 buf_len
= sizeof(*sm
);
1481 /* Read as much as we want into the _end_ of the preallocated
1484 get_fl_mem(part
->offset
+ sector_ofs
+ part
->sector_size
-
1485 buf_len
, buf_len
, buf
+ buf_size
- buf_len
);
1487 sm
= (void *)buf
+ buf_size
- sizeof(*sm
);
1488 if (sm
->magic
== JFFS2_SUM_MAGIC
) {
1489 sumlen
= part
->sector_size
- sm
->offset
;
1490 sumptr
= buf
+ buf_size
- sumlen
;
1492 /* Now, make sure the summary itself is available */
1493 if (sumlen
> buf_size
) {
1494 /* Need to kmalloc for this. */
1495 sumptr
= malloc(sumlen
);
1497 putstr("Can't get memory for summary "
1500 jffs2_free_cache(part
);
1503 memcpy(sumptr
+ sumlen
- buf_len
, buf
+
1504 buf_size
- buf_len
, buf_len
);
1506 if (buf_len
< sumlen
) {
1507 /* Need to read more so that the entire summary
1510 get_fl_mem(part
->offset
+ sector_ofs
+
1511 part
->sector_size
- sumlen
,
1512 sumlen
- buf_len
, sumptr
);
1517 ret
= jffs2_sum_scan_sumnode(part
, sector_ofs
, sumptr
,
1520 if (buf_size
&& sumlen
> buf_size
)
1524 jffs2_free_cache(part
);
1531 #endif /* CONFIG_JFFS2_SUMMARY */
1533 buf_len
= EMPTY_SCAN_SIZE(part
->sector_size
);
1535 get_fl_mem((u32
)part
->offset
+ buf_ofs
, buf_len
, buf
);
1537 /* We temporarily use 'ofs' as a pointer into the buffer/jeb */
1540 /* Scan only 4KiB of 0xFF before declaring it's empty */
1541 while (ofs
< EMPTY_SCAN_SIZE(part
->sector_size
) &&
1542 *(uint32_t *)(&buf
[ofs
]) == 0xFFFFFFFF)
1545 if (ofs
== EMPTY_SCAN_SIZE(part
->sector_size
))
1552 while (ofs
< sector_ofs
+ part
->sector_size
) {
1553 if (ofs
== prevofs
) {
1554 printf("offset %08x already seen, skip\n", ofs
);
1560 if (sector_ofs
+ part
->sector_size
<
1561 ofs
+ sizeof(*node
))
1563 if (buf_ofs
+ buf_len
< ofs
+ sizeof(*node
)) {
1564 buf_len
= min_t(uint32_t, buf_size
, sector_ofs
1565 + part
->sector_size
- ofs
);
1566 get_fl_mem((u32
)part
->offset
+ ofs
, buf_len
,
1571 node
= (struct jffs2_unknown_node
*)&buf
[ofs
-buf_ofs
];
1573 if (*(uint32_t *)(&buf
[ofs
-buf_ofs
]) == 0xffffffff) {
1578 scan_end
= min_t(uint32_t, EMPTY_SCAN_SIZE(
1579 part
->sector_size
)/8,
1582 inbuf_ofs
= ofs
- buf_ofs
;
1583 while (inbuf_ofs
< scan_end
) {
1584 if (*(uint32_t *)(&buf
[inbuf_ofs
]) !=
1593 /* See how much more there is to read in this
1596 buf_len
= min_t(uint32_t, buf_size
,
1598 part
->sector_size
- ofs
);
1600 /* No more to read. Break out of main
1601 * loop without marking this range of
1602 * empty space as dirty (because it's
1608 get_fl_mem((u32
)part
->offset
+ ofs
, buf_len
,
1613 if (node
->magic
!= JFFS2_MAGIC_BITMASK
||
1619 if (ofs
+ node
->totlen
>
1620 sector_ofs
+ part
->sector_size
) {
1625 /* if its a fragment add it */
1626 switch (node
->nodetype
) {
1627 case JFFS2_NODETYPE_INODE
:
1628 if (buf_ofs
+ buf_len
< ofs
+ sizeof(struct
1630 get_fl_mem((u32
)part
->offset
+ ofs
,
1635 if (!inode_crc((struct jffs2_raw_inode
*) node
))
1638 if (insert_node(&pL
->frag
, (u32
) part
->offset
+
1641 jffs2_free_cache(part
);
1644 if (max_totlen
< node
->totlen
)
1645 max_totlen
= node
->totlen
;
1647 case JFFS2_NODETYPE_DIRENT
:
1648 if (buf_ofs
+ buf_len
< ofs
+ sizeof(struct
1653 get_fl_mem((u32
)part
->offset
+ ofs
,
1659 if (!dirent_crc((struct jffs2_raw_dirent
*)
1666 if (! (counterN
%100))
1668 if (insert_node(&pL
->dir
, (u32
) part
->offset
+
1671 jffs2_free_cache(part
);
1674 if (max_totlen
< node
->totlen
)
1675 max_totlen
= node
->totlen
;
1678 case JFFS2_NODETYPE_CLEANMARKER
:
1679 if (node
->totlen
!= sizeof(struct jffs2_unknown_node
))
1680 printf("OOPS Cleanmarker has bad size "
1683 sizeof(struct jffs2_unknown_node
));
1685 case JFFS2_NODETYPE_PADDING
:
1686 if (node
->totlen
< sizeof(struct jffs2_unknown_node
))
1687 printf("OOPS Padding has bad size "
1690 sizeof(struct jffs2_unknown_node
));
1692 case JFFS2_NODETYPE_SUMMARY
:
1695 printf("Unknown node type: %x len %d offset 0x%x\n",
1699 ofs
+= ((node
->totlen
+ 3) & ~3);
1705 putstr("\b\b done.\r\n"); /* close off the dots */
1707 /* We don't care if malloc failed - then each read operation will
1708 * allocate its own buffer as necessary (NAND) or will read directly
1711 pL
->readbuf
= malloc(max_totlen
);
1713 /* turn the lcd back on. */
1717 putLabeledWord("dir entries = ", pL
->dir
.listCount
);
1718 putLabeledWord("frag entries = ", pL
->frag
.listCount
);
1719 putLabeledWord("+4 increments = ", counter4
);
1720 putLabeledWord("+file_offset increments = ", counterF
);
1724 #ifdef DEBUG_DIRENTS
1728 #ifdef DEBUG_FRAGMENTS
1732 /* give visual feedback that we are done scanning the flash */
1733 led_blink(0x0, 0x0, 0x1, 0x1); /* off, forever, on 100ms, off 100ms */
1739 jffs2_1pass_fill_info(struct b_lists
* pL
, struct b_jffs2_info
* piL
)
1742 struct jffs2_raw_inode ojNode
;
1743 struct jffs2_raw_inode
*jNode
;
1746 for (i
= 0; i
< JFFS2_NUM_COMPR
; i
++) {
1747 piL
->compr_info
[i
].num_frags
= 0;
1748 piL
->compr_info
[i
].compr_sum
= 0;
1749 piL
->compr_info
[i
].decompr_sum
= 0;
1752 b
= pL
->frag
.listHead
;
1754 jNode
= (struct jffs2_raw_inode
*) get_fl_mem(b
->offset
,
1755 sizeof(ojNode
), &ojNode
);
1756 if (jNode
->compr
< JFFS2_NUM_COMPR
) {
1757 piL
->compr_info
[jNode
->compr
].num_frags
++;
1758 piL
->compr_info
[jNode
->compr
].compr_sum
+= jNode
->csize
;
1759 piL
->compr_info
[jNode
->compr
].decompr_sum
+= jNode
->dsize
;
1767 static struct b_lists
*
1768 jffs2_get_list(struct part_info
* part
, const char *who
)
1770 /* copy requested part_info struct pointer to global location */
1771 current_part
= part
;
1773 if (jffs2_1pass_rescan_needed(part
)) {
1774 if (!jffs2_1pass_build_lists(part
)) {
1775 printf("%s: Failed to scan JFFSv2 file structure\n", who
);
1779 return (struct b_lists
*)part
->jffs2_priv
;
1783 /* Print directory / file contents */
1785 jffs2_1pass_ls(struct part_info
* part
, const char *fname
)
1791 if (! (pl
= jffs2_get_list(part
, "ls")))
1794 if (! (inode
= jffs2_1pass_search_list_inodes(pl
, fname
, 1))) {
1795 putstr("ls: Failed to scan jffs2 file structure\r\n");
1801 putLabeledWord("found file at inode = ", inode
);
1802 putLabeledWord("read_inode returns = ", ret
);
1809 /* Load a file from flash into memory. fname can be a full path */
1811 jffs2_1pass_load(char *dest
, struct part_info
* part
, const char *fname
)
1818 if (! (pl
= jffs2_get_list(part
, "load")))
1821 if (! (inode
= jffs2_1pass_search_inode(pl
, fname
, 1))) {
1822 putstr("load: Failed to find inode\r\n");
1826 /* Resolve symlinks */
1827 if (! (inode
= jffs2_1pass_resolve_inode(pl
, inode
))) {
1828 putstr("load: Failed to resolve inode structure\r\n");
1832 if ((ret
= jffs2_1pass_read_inode(pl
, inode
, dest
)) < 0) {
1833 putstr("load: Failed to read inode\r\n");
1837 DEBUGF ("load: loaded '%s' to 0x%lx (%ld bytes)\n", fname
,
1838 (unsigned long) dest
, ret
);
1842 /* Return information about the fs on this partition */
1844 jffs2_1pass_info(struct part_info
* part
)
1846 struct b_jffs2_info info
;
1850 if (! (pl
= jffs2_get_list(part
, "info")))
1853 jffs2_1pass_fill_info(pl
, &info
);
1854 for (i
= 0; i
< JFFS2_NUM_COMPR
; i
++) {
1855 printf ("Compression: %s\n"
1856 "\tfrag count: %d\n"
1857 "\tcompressed sum: %d\n"
1858 "\tuncompressed sum: %d\n",
1860 info
.compr_info
[i
].num_frags
,
1861 info
.compr_info
[i
].compr_sum
,
1862 info
.compr_info
[i
].decompr_sum
);