1fe8c2806Swdenk /* 2fe8c2806Swdenk ------------------------------------------------------------------------- 3fe8c2806Swdenk * Filename: jffs2.c 4fe8c2806Swdenk * Version: $Id: jffs2_1pass.c,v 1.7 2002/01/25 01:56:47 nyet Exp $ 5fe8c2806Swdenk * Copyright: Copyright (C) 2001, Russ Dill 6fe8c2806Swdenk * Author: Russ Dill <Russ.Dill@asu.edu> 7fe8c2806Swdenk * Description: Module to load kernel from jffs2 8fe8c2806Swdenk *-----------------------------------------------------------------------*/ 9fe8c2806Swdenk /* 10fe8c2806Swdenk * some portions of this code are taken from jffs2, and as such, the 11fe8c2806Swdenk * following copyright notice is included. 12fe8c2806Swdenk * 13fe8c2806Swdenk * JFFS2 -- Journalling Flash File System, Version 2. 14fe8c2806Swdenk * 15fe8c2806Swdenk * Copyright (C) 2001 Red Hat, Inc. 16fe8c2806Swdenk * 17fe8c2806Swdenk * Created by David Woodhouse <dwmw2@cambridge.redhat.com> 18fe8c2806Swdenk * 19fe8c2806Swdenk * The original JFFS, from which the design for JFFS2 was derived, 20fe8c2806Swdenk * was designed and implemented by Axis Communications AB. 21fe8c2806Swdenk * 22fe8c2806Swdenk * The contents of this file are subject to the Red Hat eCos Public 23fe8c2806Swdenk * License Version 1.1 (the "Licence"); you may not use this file 24fe8c2806Swdenk * except in compliance with the Licence. You may obtain a copy of 25fe8c2806Swdenk * the Licence at http://www.redhat.com/ 26fe8c2806Swdenk * 27fe8c2806Swdenk * Software distributed under the Licence is distributed on an "AS IS" 28fe8c2806Swdenk * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. 29fe8c2806Swdenk * See the Licence for the specific language governing rights and 30fe8c2806Swdenk * limitations under the Licence. 31fe8c2806Swdenk * 32fe8c2806Swdenk * The Original Code is JFFS2 - Journalling Flash File System, version 2 33fe8c2806Swdenk * 34fe8c2806Swdenk * Alternatively, the contents of this file may be used under the 35fe8c2806Swdenk * terms of the GNU General Public License version 2 (the "GPL"), in 36fe8c2806Swdenk * which case the provisions of the GPL are applicable instead of the 37fe8c2806Swdenk * above. If you wish to allow the use of your version of this file 38fe8c2806Swdenk * only under the terms of the GPL and not to allow others to use your 39fe8c2806Swdenk * version of this file under the RHEPL, indicate your decision by 40fe8c2806Swdenk * deleting the provisions above and replace them with the notice and 41fe8c2806Swdenk * other provisions required by the GPL. If you do not delete the 42fe8c2806Swdenk * provisions above, a recipient may use your version of this file 43fe8c2806Swdenk * under either the RHEPL or the GPL. 44fe8c2806Swdenk * 45fe8c2806Swdenk * $Id: jffs2_1pass.c,v 1.7 2002/01/25 01:56:47 nyet Exp $ 46fe8c2806Swdenk * 47fe8c2806Swdenk */ 48fe8c2806Swdenk 49fe8c2806Swdenk /* Ok, so anyone who knows the jffs2 code will probably want to get a papar 50fe8c2806Swdenk * bag to throw up into before reading this code. I looked through the jffs2 51fe8c2806Swdenk * code, the caching scheme is very elegant. I tried to keep the version 52fe8c2806Swdenk * for a bootloader as small and simple as possible. Instead of worring about 53fe8c2806Swdenk * unneccesary data copies, node scans, etc, I just optimized for the known 54fe8c2806Swdenk * common case, a kernel, which looks like: 55fe8c2806Swdenk * (1) most pages are 4096 bytes 56fe8c2806Swdenk * (2) version numbers are somewhat sorted in acsending order 57fe8c2806Swdenk * (3) multiple compressed blocks making up one page is uncommon 58fe8c2806Swdenk * 59fe8c2806Swdenk * So I create a linked list of decending version numbers (insertions at the 60fe8c2806Swdenk * head), and then for each page, walk down the list, until a matching page 61fe8c2806Swdenk * with 4096 bytes is found, and then decompress the watching pages in 62fe8c2806Swdenk * reverse order. 63fe8c2806Swdenk * 64fe8c2806Swdenk */ 65fe8c2806Swdenk 66fe8c2806Swdenk /* 67fe8c2806Swdenk * Adapted by Nye Liu <nyet@zumanetworks.com> and 68fe8c2806Swdenk * Rex Feany <rfeany@zumanetworks.com> 69fe8c2806Swdenk * on Jan/2002 for U-Boot. 70fe8c2806Swdenk * 71fe8c2806Swdenk * Clipped out all the non-1pass functions, cleaned up warnings, 72fe8c2806Swdenk * wrappers, etc. No major changes to the code. 73fe8c2806Swdenk * Please, he really means it when he said have a paper bag 74fe8c2806Swdenk * handy. We needed it ;). 75fe8c2806Swdenk * 76fe8c2806Swdenk */ 77fe8c2806Swdenk 7806d01dbeSwdenk /* 7906d01dbeSwdenk * Bugfixing by Kai-Uwe Bloem <kai-uwe.bloem@auerswald.de>, (C) Mar/2003 8006d01dbeSwdenk * 8106d01dbeSwdenk * - overhaul of the memory management. Removed much of the "paper-bagging" 8206d01dbeSwdenk * in that part of the code, fixed several bugs, now frees memory when 8306d01dbeSwdenk * partition is changed. 8406d01dbeSwdenk * It's still ugly :-( 8506d01dbeSwdenk * - fixed a bug in jffs2_1pass_read_inode where the file length calculation 8606d01dbeSwdenk * was incorrect. Removed a bit of the paper-bagging as well. 8706d01dbeSwdenk * - removed double crc calculation for fragment headers in jffs2_private.h 8806d01dbeSwdenk * for speedup. 8906d01dbeSwdenk * - scan_empty rewritten in a more "standard" manner (non-paperbag, that is). 9006d01dbeSwdenk * - spinning wheel now spins depending on how much memory has been scanned 9106d01dbeSwdenk * - lots of small changes all over the place to "improve" readability. 9206d01dbeSwdenk * - implemented fragment sorting to ensure that the newest data is copied 9306d01dbeSwdenk * if there are multiple copies of fragments for a certain file offset. 9406d01dbeSwdenk * 956d0f6bcfSJean-Christophe PLAGNIOL-VILLARD * The fragment sorting feature must be enabled by CONFIG_SYS_JFFS2_SORT_FRAGMENTS. 9606d01dbeSwdenk * Sorting is done while adding fragments to the lists, which is more or less a 9706d01dbeSwdenk * bubble sort. This takes a lot of time, and is most probably not an issue if 9806d01dbeSwdenk * the boot filesystem is always mounted readonly. 9906d01dbeSwdenk * 10006d01dbeSwdenk * You should define it if the boot filesystem is mounted writable, and updates 10106d01dbeSwdenk * to the boot files are done by copying files to that filesystem. 10206d01dbeSwdenk * 10306d01dbeSwdenk * 10406d01dbeSwdenk * There's a big issue left: endianess is completely ignored in this code. Duh! 10506d01dbeSwdenk * 10606d01dbeSwdenk * 10706d01dbeSwdenk * You still should have paper bags at hand :-(. The code lacks more or less 10806d01dbeSwdenk * any comment, and is still arcane and difficult to read in places. As this 109dd875c76Swdenk * might be incompatible with any new code from the jffs2 maintainers anyway, 110dd875c76Swdenk * it should probably be dumped and replaced by something like jffs2reader! 11106d01dbeSwdenk */ 11206d01dbeSwdenk 11306d01dbeSwdenk 114fe8c2806Swdenk #include <common.h> 115fe8c2806Swdenk #include <config.h> 116fe8c2806Swdenk #include <malloc.h> 11718e86724STom Rini #include <div64.h> 1181c8fdf87STom Rini #include <linux/compiler.h> 119fe8c2806Swdenk #include <linux/stat.h> 120fe8c2806Swdenk #include <linux/time.h> 12186d3273eSStuart Wood #include <watchdog.h> 122fe8c2806Swdenk #include <jffs2/jffs2.h> 123fe8c2806Swdenk #include <jffs2/jffs2_1pass.h> 1247b15e2bbSMike Frysinger #include <linux/compat.h> 125*1221ce45SMasahiro Yamada #include <linux/errno.h> 126fe8c2806Swdenk 127fe8c2806Swdenk #include "jffs2_private.h" 128fe8c2806Swdenk 12906d01dbeSwdenk 13006d01dbeSwdenk #define NODE_CHUNK 1024 /* size of memory allocation chunk in b_nodes */ 131fc1cfcdbSwdenk #define SPIN_BLKSIZE 18 /* spin after having scanned 1<<BLKSIZE bytes */ 13206d01dbeSwdenk 13306d01dbeSwdenk /* Debugging switches */ 13406d01dbeSwdenk #undef DEBUG_DIRENTS /* print directory entry list after scan */ 13506d01dbeSwdenk #undef DEBUG_FRAGMENTS /* print fragment list after scan */ 13606d01dbeSwdenk #undef DEBUG /* enable debugging messages */ 13706d01dbeSwdenk 13806d01dbeSwdenk 13906d01dbeSwdenk #ifdef DEBUG 14006d01dbeSwdenk # define DEBUGF(fmt,args...) printf(fmt ,##args) 14106d01dbeSwdenk #else 14206d01dbeSwdenk # define DEBUGF(fmt,args...) 14306d01dbeSwdenk #endif 14406d01dbeSwdenk 1459b707622SIlya Yanok #include "summary.h" 1469b707622SIlya Yanok 147700a0c64SWolfgang Denk /* keeps pointer to currentlu processed partition */ 148700a0c64SWolfgang Denk static struct part_info *current_part; 149998eaaecSwdenk 150e4dbe1b2SWolfgang Denk #if (defined(CONFIG_JFFS2_NAND) && \ 151dd60d122SJon Loeliger defined(CONFIG_CMD_NAND) ) 152addb2e16SBartlomiej Sieka #include <nand.h> 153998eaaecSwdenk /* 154998eaaecSwdenk * Support for jffs2 on top of NAND-flash 155998eaaecSwdenk * 156998eaaecSwdenk * NAND memory isn't mapped in processor's address space, 157998eaaecSwdenk * so data should be fetched from flash before 158998eaaecSwdenk * being processed. This is exactly what functions declared 159998eaaecSwdenk * here do. 160998eaaecSwdenk * 161998eaaecSwdenk */ 162998eaaecSwdenk 163998eaaecSwdenk #define NAND_PAGE_SIZE 512 164998eaaecSwdenk #define NAND_PAGE_SHIFT 9 165998eaaecSwdenk #define NAND_PAGE_MASK (~(NAND_PAGE_SIZE-1)) 166998eaaecSwdenk 167998eaaecSwdenk #ifndef NAND_CACHE_PAGES 168998eaaecSwdenk #define NAND_CACHE_PAGES 16 169998eaaecSwdenk #endif 170998eaaecSwdenk #define NAND_CACHE_SIZE (NAND_CACHE_PAGES*NAND_PAGE_SIZE) 171998eaaecSwdenk 172998eaaecSwdenk static u8* nand_cache = NULL; 173998eaaecSwdenk static u32 nand_cache_off = (u32)-1; 174998eaaecSwdenk 175998eaaecSwdenk static int read_nand_cached(u32 off, u32 size, u_char *buf) 176998eaaecSwdenk { 177700a0c64SWolfgang Denk struct mtdids *id = current_part->dev->id; 178998eaaecSwdenk u32 bytes_read = 0; 1796db39708SMarian Balakowicz size_t retlen; 180998eaaecSwdenk int cpy_bytes; 181998eaaecSwdenk 182998eaaecSwdenk while (bytes_read < size) { 183998eaaecSwdenk if ((off + bytes_read < nand_cache_off) || 184998eaaecSwdenk (off + bytes_read >= nand_cache_off+NAND_CACHE_SIZE)) { 185998eaaecSwdenk nand_cache_off = (off + bytes_read) & NAND_PAGE_MASK; 186998eaaecSwdenk if (!nand_cache) { 187998eaaecSwdenk /* This memory never gets freed but 'cause 188998eaaecSwdenk it's a bootloader, nobody cares */ 189998eaaecSwdenk nand_cache = malloc(NAND_CACHE_SIZE); 190998eaaecSwdenk if (!nand_cache) { 191998eaaecSwdenk printf("read_nand_cached: can't alloc cache size %d bytes\n", 192998eaaecSwdenk NAND_CACHE_SIZE); 193998eaaecSwdenk return -1; 194998eaaecSwdenk } 195998eaaecSwdenk } 196addb2e16SBartlomiej Sieka 197addb2e16SBartlomiej Sieka retlen = NAND_CACHE_SIZE; 198b616d9b0SScott Wood if (nand_read(nand_info[id->num], nand_cache_off, 199addb2e16SBartlomiej Sieka &retlen, nand_cache) != 0 || 200998eaaecSwdenk retlen != NAND_CACHE_SIZE) { 201998eaaecSwdenk printf("read_nand_cached: error reading nand off %#x size %d bytes\n", 202998eaaecSwdenk nand_cache_off, NAND_CACHE_SIZE); 203998eaaecSwdenk return -1; 204998eaaecSwdenk } 205998eaaecSwdenk } 206998eaaecSwdenk cpy_bytes = nand_cache_off + NAND_CACHE_SIZE - (off + bytes_read); 207998eaaecSwdenk if (cpy_bytes > size - bytes_read) 208998eaaecSwdenk cpy_bytes = size - bytes_read; 209998eaaecSwdenk memcpy(buf + bytes_read, 210998eaaecSwdenk nand_cache + off + bytes_read - nand_cache_off, 211998eaaecSwdenk cpy_bytes); 212998eaaecSwdenk bytes_read += cpy_bytes; 213998eaaecSwdenk } 214998eaaecSwdenk return bytes_read; 215998eaaecSwdenk } 216998eaaecSwdenk 217700a0c64SWolfgang Denk static void *get_fl_mem_nand(u32 off, u32 size, void *ext_buf) 218998eaaecSwdenk { 219998eaaecSwdenk u_char *buf = ext_buf ? (u_char*)ext_buf : (u_char*)malloc(size); 220998eaaecSwdenk 221998eaaecSwdenk if (NULL == buf) { 222700a0c64SWolfgang Denk printf("get_fl_mem_nand: can't alloc %d bytes\n", size); 223998eaaecSwdenk return NULL; 224998eaaecSwdenk } 225998eaaecSwdenk if (read_nand_cached(off, size, buf) < 0) { 22632877d66Swdenk if (!ext_buf) 227998eaaecSwdenk free(buf); 228998eaaecSwdenk return NULL; 229998eaaecSwdenk } 230998eaaecSwdenk 231998eaaecSwdenk return buf; 232998eaaecSwdenk } 233998eaaecSwdenk 23470741004SIlya Yanok static void *get_node_mem_nand(u32 off, void *ext_buf) 235998eaaecSwdenk { 236998eaaecSwdenk struct jffs2_unknown_node node; 237998eaaecSwdenk void *ret = NULL; 238998eaaecSwdenk 239700a0c64SWolfgang Denk if (NULL == get_fl_mem_nand(off, sizeof(node), &node)) 240998eaaecSwdenk return NULL; 241998eaaecSwdenk 242700a0c64SWolfgang Denk if (!(ret = get_fl_mem_nand(off, node.magic == 243998eaaecSwdenk JFFS2_MAGIC_BITMASK ? node.totlen : sizeof(node), 24470741004SIlya Yanok ext_buf))) { 245998eaaecSwdenk printf("off = %#x magic %#x type %#x node.totlen = %d\n", 246998eaaecSwdenk off, node.magic, node.nodetype, node.totlen); 247998eaaecSwdenk } 248998eaaecSwdenk return ret; 249998eaaecSwdenk } 250998eaaecSwdenk 251700a0c64SWolfgang Denk static void put_fl_mem_nand(void *buf) 252998eaaecSwdenk { 253998eaaecSwdenk free(buf); 254998eaaecSwdenk } 255dd60d122SJon Loeliger #endif 256998eaaecSwdenk 2571a7f8cceSKyungmin Park #if defined(CONFIG_CMD_ONENAND) 2581a7f8cceSKyungmin Park 2591a7f8cceSKyungmin Park #include <linux/mtd/mtd.h> 2601a7f8cceSKyungmin Park #include <linux/mtd/onenand.h> 2611a7f8cceSKyungmin Park #include <onenand_uboot.h> 2621a7f8cceSKyungmin Park 2631a7f8cceSKyungmin Park #define ONENAND_PAGE_SIZE 2048 2641a7f8cceSKyungmin Park #define ONENAND_PAGE_SHIFT 11 2651a7f8cceSKyungmin Park #define ONENAND_PAGE_MASK (~(ONENAND_PAGE_SIZE-1)) 2661a7f8cceSKyungmin Park 2671a7f8cceSKyungmin Park #ifndef ONENAND_CACHE_PAGES 2681a7f8cceSKyungmin Park #define ONENAND_CACHE_PAGES 4 2691a7f8cceSKyungmin Park #endif 2701a7f8cceSKyungmin Park #define ONENAND_CACHE_SIZE (ONENAND_CACHE_PAGES*ONENAND_PAGE_SIZE) 2711a7f8cceSKyungmin Park 2721a7f8cceSKyungmin Park static u8* onenand_cache; 2731a7f8cceSKyungmin Park static u32 onenand_cache_off = (u32)-1; 2741a7f8cceSKyungmin Park 2751a7f8cceSKyungmin Park static int read_onenand_cached(u32 off, u32 size, u_char *buf) 2761a7f8cceSKyungmin Park { 2771a7f8cceSKyungmin Park u32 bytes_read = 0; 2781a7f8cceSKyungmin Park size_t retlen; 2791a7f8cceSKyungmin Park int cpy_bytes; 2801a7f8cceSKyungmin Park 2811a7f8cceSKyungmin Park while (bytes_read < size) { 2821a7f8cceSKyungmin Park if ((off + bytes_read < onenand_cache_off) || 2831a7f8cceSKyungmin Park (off + bytes_read >= onenand_cache_off + ONENAND_CACHE_SIZE)) { 2841a7f8cceSKyungmin Park onenand_cache_off = (off + bytes_read) & ONENAND_PAGE_MASK; 2851a7f8cceSKyungmin Park if (!onenand_cache) { 2861a7f8cceSKyungmin Park /* This memory never gets freed but 'cause 2871a7f8cceSKyungmin Park it's a bootloader, nobody cares */ 2881a7f8cceSKyungmin Park onenand_cache = malloc(ONENAND_CACHE_SIZE); 2891a7f8cceSKyungmin Park if (!onenand_cache) { 2901a7f8cceSKyungmin Park printf("read_onenand_cached: can't alloc cache size %d bytes\n", 2911a7f8cceSKyungmin Park ONENAND_CACHE_SIZE); 2921a7f8cceSKyungmin Park return -1; 2931a7f8cceSKyungmin Park } 2941a7f8cceSKyungmin Park } 2951a7f8cceSKyungmin Park 2961a7f8cceSKyungmin Park retlen = ONENAND_CACHE_SIZE; 2971a7f8cceSKyungmin Park if (onenand_read(&onenand_mtd, onenand_cache_off, retlen, 2981a7f8cceSKyungmin Park &retlen, onenand_cache) != 0 || 2991a7f8cceSKyungmin Park retlen != ONENAND_CACHE_SIZE) { 3001a7f8cceSKyungmin Park printf("read_onenand_cached: error reading nand off %#x size %d bytes\n", 3011a7f8cceSKyungmin Park onenand_cache_off, ONENAND_CACHE_SIZE); 3021a7f8cceSKyungmin Park return -1; 3031a7f8cceSKyungmin Park } 3041a7f8cceSKyungmin Park } 3051a7f8cceSKyungmin Park cpy_bytes = onenand_cache_off + ONENAND_CACHE_SIZE - (off + bytes_read); 3061a7f8cceSKyungmin Park if (cpy_bytes > size - bytes_read) 3071a7f8cceSKyungmin Park cpy_bytes = size - bytes_read; 3081a7f8cceSKyungmin Park memcpy(buf + bytes_read, 3091a7f8cceSKyungmin Park onenand_cache + off + bytes_read - onenand_cache_off, 3101a7f8cceSKyungmin Park cpy_bytes); 3111a7f8cceSKyungmin Park bytes_read += cpy_bytes; 3121a7f8cceSKyungmin Park } 3131a7f8cceSKyungmin Park return bytes_read; 3141a7f8cceSKyungmin Park } 3151a7f8cceSKyungmin Park 3161a7f8cceSKyungmin Park static void *get_fl_mem_onenand(u32 off, u32 size, void *ext_buf) 3171a7f8cceSKyungmin Park { 3181a7f8cceSKyungmin Park u_char *buf = ext_buf ? (u_char *)ext_buf : (u_char *)malloc(size); 3191a7f8cceSKyungmin Park 3201a7f8cceSKyungmin Park if (NULL == buf) { 3211a7f8cceSKyungmin Park printf("get_fl_mem_onenand: can't alloc %d bytes\n", size); 3221a7f8cceSKyungmin Park return NULL; 3231a7f8cceSKyungmin Park } 3241a7f8cceSKyungmin Park if (read_onenand_cached(off, size, buf) < 0) { 3251a7f8cceSKyungmin Park if (!ext_buf) 3261a7f8cceSKyungmin Park free(buf); 3271a7f8cceSKyungmin Park return NULL; 3281a7f8cceSKyungmin Park } 3291a7f8cceSKyungmin Park 3301a7f8cceSKyungmin Park return buf; 3311a7f8cceSKyungmin Park } 3321a7f8cceSKyungmin Park 33370741004SIlya Yanok static void *get_node_mem_onenand(u32 off, void *ext_buf) 3341a7f8cceSKyungmin Park { 3351a7f8cceSKyungmin Park struct jffs2_unknown_node node; 3361a7f8cceSKyungmin Park void *ret = NULL; 3371a7f8cceSKyungmin Park 3381a7f8cceSKyungmin Park if (NULL == get_fl_mem_onenand(off, sizeof(node), &node)) 3391a7f8cceSKyungmin Park return NULL; 3401a7f8cceSKyungmin Park 3411a7f8cceSKyungmin Park ret = get_fl_mem_onenand(off, node.magic == 3421a7f8cceSKyungmin Park JFFS2_MAGIC_BITMASK ? node.totlen : sizeof(node), 34370741004SIlya Yanok ext_buf); 3441a7f8cceSKyungmin Park if (!ret) { 3451a7f8cceSKyungmin Park printf("off = %#x magic %#x type %#x node.totlen = %d\n", 3461a7f8cceSKyungmin Park off, node.magic, node.nodetype, node.totlen); 3471a7f8cceSKyungmin Park } 3481a7f8cceSKyungmin Park return ret; 3491a7f8cceSKyungmin Park } 3501a7f8cceSKyungmin Park 3511a7f8cceSKyungmin Park 3521a7f8cceSKyungmin Park static void put_fl_mem_onenand(void *buf) 3531a7f8cceSKyungmin Park { 3541a7f8cceSKyungmin Park free(buf); 3551a7f8cceSKyungmin Park } 3561a7f8cceSKyungmin Park #endif 3571a7f8cceSKyungmin Park 358998eaaecSwdenk 359dd60d122SJon Loeliger #if defined(CONFIG_CMD_FLASH) 360700a0c64SWolfgang Denk /* 361700a0c64SWolfgang Denk * Support for jffs2 on top of NOR-flash 362700a0c64SWolfgang Denk * 363700a0c64SWolfgang Denk * NOR flash memory is mapped in processor's address space, 364700a0c64SWolfgang Denk * just return address. 365700a0c64SWolfgang Denk */ 36670741004SIlya Yanok static inline void *get_fl_mem_nor(u32 off, u32 size, void *ext_buf) 367700a0c64SWolfgang Denk { 368700a0c64SWolfgang Denk u32 addr = off; 369700a0c64SWolfgang Denk struct mtdids *id = current_part->dev->id; 370700a0c64SWolfgang Denk 371e6f2e902SMarian Balakowicz extern flash_info_t flash_info[]; 372700a0c64SWolfgang Denk flash_info_t *flash = &flash_info[id->num]; 373700a0c64SWolfgang Denk 374700a0c64SWolfgang Denk addr += flash->start[0]; 37570741004SIlya Yanok if (ext_buf) { 37670741004SIlya Yanok memcpy(ext_buf, (void *)addr, size); 37770741004SIlya Yanok return ext_buf; 37870741004SIlya Yanok } 379700a0c64SWolfgang Denk return (void*)addr; 380700a0c64SWolfgang Denk } 381700a0c64SWolfgang Denk 38270741004SIlya Yanok static inline void *get_node_mem_nor(u32 off, void *ext_buf) 3838a36d31fSIlya Yanok { 38470741004SIlya Yanok struct jffs2_unknown_node *pNode; 3858a36d31fSIlya Yanok 38670741004SIlya Yanok /* pNode will point directly to flash - don't provide external buffer 38770741004SIlya Yanok and don't care about size */ 38870741004SIlya Yanok pNode = get_fl_mem_nor(off, 0, NULL); 38970741004SIlya Yanok return (void *)get_fl_mem_nor(off, pNode->magic == JFFS2_MAGIC_BITMASK ? 39070741004SIlya Yanok pNode->totlen : sizeof(*pNode), ext_buf); 391700a0c64SWolfgang Denk } 392dd60d122SJon Loeliger #endif 393700a0c64SWolfgang Denk 394700a0c64SWolfgang Denk 395700a0c64SWolfgang Denk /* 396700a0c64SWolfgang Denk * Generic jffs2 raw memory and node read routines. 397700a0c64SWolfgang Denk * 398700a0c64SWolfgang Denk */ 399998eaaecSwdenk static inline void *get_fl_mem(u32 off, u32 size, void *ext_buf) 400998eaaecSwdenk { 401700a0c64SWolfgang Denk struct mtdids *id = current_part->dev->id; 402700a0c64SWolfgang Denk 4032d2018f3SHeiko Schocher switch(id->type) { 404dd60d122SJon Loeliger #if defined(CONFIG_CMD_FLASH) 4052d2018f3SHeiko Schocher case MTD_DEV_TYPE_NOR: 40670741004SIlya Yanok return get_fl_mem_nor(off, size, ext_buf); 4072d2018f3SHeiko Schocher break; 408700a0c64SWolfgang Denk #endif 409dd60d122SJon Loeliger #if defined(CONFIG_JFFS2_NAND) && defined(CONFIG_CMD_NAND) 4102d2018f3SHeiko Schocher case MTD_DEV_TYPE_NAND: 411700a0c64SWolfgang Denk return get_fl_mem_nand(off, size, ext_buf); 4122d2018f3SHeiko Schocher break; 413700a0c64SWolfgang Denk #endif 4141a7f8cceSKyungmin Park #if defined(CONFIG_CMD_ONENAND) 4152d2018f3SHeiko Schocher case MTD_DEV_TYPE_ONENAND: 4161a7f8cceSKyungmin Park return get_fl_mem_onenand(off, size, ext_buf); 4172d2018f3SHeiko Schocher break; 4181a7f8cceSKyungmin Park #endif 4192d2018f3SHeiko Schocher default: 4202d2018f3SHeiko Schocher printf("get_fl_mem: unknown device type, " \ 4212d2018f3SHeiko Schocher "using raw offset!\n"); 4222d2018f3SHeiko Schocher } 423998eaaecSwdenk return (void*)off; 424998eaaecSwdenk } 425998eaaecSwdenk 42670741004SIlya Yanok static inline void *get_node_mem(u32 off, void *ext_buf) 427998eaaecSwdenk { 428700a0c64SWolfgang Denk struct mtdids *id = current_part->dev->id; 429700a0c64SWolfgang Denk 4302d2018f3SHeiko Schocher switch(id->type) { 431dd60d122SJon Loeliger #if defined(CONFIG_CMD_FLASH) 4322d2018f3SHeiko Schocher case MTD_DEV_TYPE_NOR: 43370741004SIlya Yanok return get_node_mem_nor(off, ext_buf); 4342d2018f3SHeiko Schocher break; 435700a0c64SWolfgang Denk #endif 436e4dbe1b2SWolfgang Denk #if defined(CONFIG_JFFS2_NAND) && \ 437dd60d122SJon Loeliger defined(CONFIG_CMD_NAND) 4382d2018f3SHeiko Schocher case MTD_DEV_TYPE_NAND: 43970741004SIlya Yanok return get_node_mem_nand(off, ext_buf); 4402d2018f3SHeiko Schocher break; 441700a0c64SWolfgang Denk #endif 4421a7f8cceSKyungmin Park #if defined(CONFIG_CMD_ONENAND) 4432d2018f3SHeiko Schocher case MTD_DEV_TYPE_ONENAND: 44470741004SIlya Yanok return get_node_mem_onenand(off, ext_buf); 4452d2018f3SHeiko Schocher break; 4461a7f8cceSKyungmin Park #endif 4472d2018f3SHeiko Schocher default: 4482d2018f3SHeiko Schocher printf("get_fl_mem: unknown device type, " \ 4492d2018f3SHeiko Schocher "using raw offset!\n"); 4502d2018f3SHeiko Schocher } 451998eaaecSwdenk return (void*)off; 452998eaaecSwdenk } 453998eaaecSwdenk 45470741004SIlya Yanok static inline void put_fl_mem(void *buf, void *ext_buf) 455998eaaecSwdenk { 456700a0c64SWolfgang Denk struct mtdids *id = current_part->dev->id; 457700a0c64SWolfgang Denk 45870741004SIlya Yanok /* If buf is the same as ext_buf, it was provided by the caller - 45970741004SIlya Yanok we shouldn't free it then. */ 46070741004SIlya Yanok if (buf == ext_buf) 46170741004SIlya Yanok return; 4622f77c7f4SScott Wood switch (id->type) { 4632f77c7f4SScott Wood #if defined(CONFIG_JFFS2_NAND) && defined(CONFIG_CMD_NAND) 4642f77c7f4SScott Wood case MTD_DEV_TYPE_NAND: 465700a0c64SWolfgang Denk return put_fl_mem_nand(buf); 466700a0c64SWolfgang Denk #endif 4671a7f8cceSKyungmin Park #if defined(CONFIG_CMD_ONENAND) 4682f77c7f4SScott Wood case MTD_DEV_TYPE_ONENAND: 4691a7f8cceSKyungmin Park return put_fl_mem_onenand(buf); 4701a7f8cceSKyungmin Park #endif 471998eaaecSwdenk } 4722f77c7f4SScott Wood } 473998eaaecSwdenk 474fe8c2806Swdenk /* Compression names */ 475fe8c2806Swdenk static char *compr_names[] = { 476fe8c2806Swdenk "NONE", 477fe8c2806Swdenk "ZERO", 478fe8c2806Swdenk "RTIME", 479fe8c2806Swdenk "RUBINMIPS", 480fe8c2806Swdenk "COPY", 481fe8c2806Swdenk "DYNRUBIN", 48207cc0999Swdenk "ZLIB", 483f0983371SWolfgang Denk #if defined(CONFIG_JFFS2_LZO) 48407cc0999Swdenk "LZO", 48507cc0999Swdenk #endif 48606d01dbeSwdenk }; 487fe8c2806Swdenk 48806d01dbeSwdenk /* Memory management */ 48906d01dbeSwdenk struct mem_block { 49006d01dbeSwdenk u32 index; 49106d01dbeSwdenk struct mem_block *next; 49206d01dbeSwdenk struct b_node nodes[NODE_CHUNK]; 49306d01dbeSwdenk }; 494fe8c2806Swdenk 495fe8c2806Swdenk 49606d01dbeSwdenk static void 49706d01dbeSwdenk free_nodes(struct b_list *list) 49806d01dbeSwdenk { 49906d01dbeSwdenk while (list->listMemBase != NULL) { 50006d01dbeSwdenk struct mem_block *next = list->listMemBase->next; 50106d01dbeSwdenk free( list->listMemBase ); 50206d01dbeSwdenk list->listMemBase = next; 50306d01dbeSwdenk } 50406d01dbeSwdenk } 505fe8c2806Swdenk 506fe8c2806Swdenk static struct b_node * 50706d01dbeSwdenk add_node(struct b_list *list) 508fe8c2806Swdenk { 50906d01dbeSwdenk u32 index = 0; 51006d01dbeSwdenk struct mem_block *memBase; 511fe8c2806Swdenk struct b_node *b; 512fe8c2806Swdenk 51306d01dbeSwdenk memBase = list->listMemBase; 51406d01dbeSwdenk if (memBase != NULL) 51506d01dbeSwdenk index = memBase->index; 516fe8c2806Swdenk #if 0 517fe8c2806Swdenk putLabeledWord("add_node: index = ", index); 51806d01dbeSwdenk putLabeledWord("add_node: memBase = ", list->listMemBase); 519fe8c2806Swdenk #endif 520fe8c2806Swdenk 52106d01dbeSwdenk if (memBase == NULL || index >= NODE_CHUNK) { 52206d01dbeSwdenk /* we need more space before we continue */ 52306d01dbeSwdenk memBase = mmalloc(sizeof(struct mem_block)); 52406d01dbeSwdenk if (memBase == NULL) { 525fe8c2806Swdenk putstr("add_node: malloc failed\n"); 526fe8c2806Swdenk return NULL; 527fe8c2806Swdenk } 52806d01dbeSwdenk memBase->next = list->listMemBase; 52906d01dbeSwdenk index = 0; 530fe8c2806Swdenk #if 0 531fe8c2806Swdenk putLabeledWord("add_node: alloced a new membase at ", *memBase); 532fe8c2806Swdenk #endif 533fe8c2806Swdenk 534fe8c2806Swdenk } 535fe8c2806Swdenk /* now we have room to add it. */ 53606d01dbeSwdenk b = &memBase->nodes[index]; 53706d01dbeSwdenk index ++; 538fe8c2806Swdenk 53906d01dbeSwdenk memBase->index = index; 54006d01dbeSwdenk list->listMemBase = memBase; 54106d01dbeSwdenk list->listCount++; 542fe8c2806Swdenk return b; 543fe8c2806Swdenk } 544fe8c2806Swdenk 54506d01dbeSwdenk static struct b_node * 54606d01dbeSwdenk insert_node(struct b_list *list, u32 offset) 54706d01dbeSwdenk { 54806d01dbeSwdenk struct b_node *new; 54906d01dbeSwdenk 55006d01dbeSwdenk if (!(new = add_node(list))) { 55106d01dbeSwdenk putstr("add_node failed!\r\n"); 55206d01dbeSwdenk return NULL; 55306d01dbeSwdenk } 55406d01dbeSwdenk new->offset = offset; 55510d3ac34SMark Tomlinson new->next = NULL; 55606d01dbeSwdenk 55710d3ac34SMark Tomlinson if (list->listTail != NULL) 55810d3ac34SMark Tomlinson list->listTail->next = new; 55906d01dbeSwdenk else 56006d01dbeSwdenk list->listHead = new; 56106d01dbeSwdenk list->listTail = new; 56206d01dbeSwdenk 56306d01dbeSwdenk return new; 56406d01dbeSwdenk } 56506d01dbeSwdenk 5666d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #ifdef CONFIG_SYS_JFFS2_SORT_FRAGMENTS 5677205e407Swdenk /* Sort data entries with the latest version last, so that if there 5687205e407Swdenk * is overlapping data the latest version will be used. 5697205e407Swdenk */ 57006d01dbeSwdenk static int compare_inodes(struct b_node *new, struct b_node *old) 57106d01dbeSwdenk { 572225cf4cdSMark Tomlinson /* 573225cf4cdSMark Tomlinson * Only read in the version info from flash, not the entire inode. 574225cf4cdSMark Tomlinson * This can make a big difference to speed if flash is slow. 575225cf4cdSMark Tomlinson */ 576225cf4cdSMark Tomlinson u32 new_version; 577225cf4cdSMark Tomlinson u32 old_version; 578225cf4cdSMark Tomlinson get_fl_mem(new->offset + offsetof(struct jffs2_raw_inode, version), 579225cf4cdSMark Tomlinson sizeof(new_version), &new_version); 580225cf4cdSMark Tomlinson get_fl_mem(old->offset + offsetof(struct jffs2_raw_inode, version), 581225cf4cdSMark Tomlinson sizeof(old_version), &old_version); 58206d01dbeSwdenk 583225cf4cdSMark Tomlinson return new_version > old_version; 58406d01dbeSwdenk } 58506d01dbeSwdenk 5867205e407Swdenk /* Sort directory entries so all entries in the same directory 5877205e407Swdenk * with the same name are grouped together, with the latest version 5887205e407Swdenk * last. This makes it easy to eliminate all but the latest version 5897205e407Swdenk * by marking the previous version dead by setting the inode to 0. 5907205e407Swdenk */ 59106d01dbeSwdenk static int compare_dirents(struct b_node *new, struct b_node *old) 59206d01dbeSwdenk { 593225cf4cdSMark Tomlinson /* 594225cf4cdSMark Tomlinson * Using NULL as the buffer for NOR flash prevents the entire node 595225cf4cdSMark Tomlinson * being read. This makes most comparisons much quicker as only one 596225cf4cdSMark Tomlinson * or two entries from the node will be used most of the time. 597225cf4cdSMark Tomlinson */ 598225cf4cdSMark Tomlinson struct jffs2_raw_dirent *jNew = get_node_mem(new->offset, NULL); 599225cf4cdSMark Tomlinson struct jffs2_raw_dirent *jOld = get_node_mem(old->offset, NULL); 6007205e407Swdenk int cmp; 601225cf4cdSMark Tomlinson int ret; 60206d01dbeSwdenk 603225cf4cdSMark Tomlinson if (jNew->pino != jOld->pino) { 6047205e407Swdenk /* ascending sort by pino */ 605225cf4cdSMark Tomlinson ret = jNew->pino > jOld->pino; 606225cf4cdSMark Tomlinson } else if (jNew->nsize != jOld->nsize) { 607225cf4cdSMark Tomlinson /* 608225cf4cdSMark Tomlinson * pino is the same, so use ascending sort by nsize, 609225cf4cdSMark Tomlinson * so we don't do strncmp unless we really must. 6107205e407Swdenk */ 611225cf4cdSMark Tomlinson ret = jNew->nsize > jOld->nsize; 612225cf4cdSMark Tomlinson } else { 613225cf4cdSMark Tomlinson /* 614225cf4cdSMark Tomlinson * length is also the same, so use ascending sort by name 6157205e407Swdenk */ 616225cf4cdSMark Tomlinson cmp = strncmp((char *)jNew->name, (char *)jOld->name, 617225cf4cdSMark Tomlinson jNew->nsize); 618225cf4cdSMark Tomlinson if (cmp != 0) { 619225cf4cdSMark Tomlinson ret = cmp > 0; 620225cf4cdSMark Tomlinson } else { 621225cf4cdSMark Tomlinson /* 622225cf4cdSMark Tomlinson * we have duplicate names in this directory, 623225cf4cdSMark Tomlinson * so use ascending sort by version 6247205e407Swdenk */ 625225cf4cdSMark Tomlinson ret = jNew->version > jOld->version; 6267205e407Swdenk } 627225cf4cdSMark Tomlinson } 628225cf4cdSMark Tomlinson put_fl_mem(jNew, NULL); 629225cf4cdSMark Tomlinson put_fl_mem(jOld, NULL); 6307205e407Swdenk 631225cf4cdSMark Tomlinson return ret; 63206d01dbeSwdenk } 63306d01dbeSwdenk #endif 634fe8c2806Swdenk 635700a0c64SWolfgang Denk void 636700a0c64SWolfgang Denk jffs2_free_cache(struct part_info *part) 637fe8c2806Swdenk { 63806d01dbeSwdenk struct b_lists *pL; 639fe8c2806Swdenk 64006d01dbeSwdenk if (part->jffs2_priv != NULL) { 64106d01dbeSwdenk pL = (struct b_lists *)part->jffs2_priv; 64206d01dbeSwdenk free_nodes(&pL->frag); 64306d01dbeSwdenk free_nodes(&pL->dir); 64470741004SIlya Yanok free(pL->readbuf); 64506d01dbeSwdenk free(pL); 64606d01dbeSwdenk } 647700a0c64SWolfgang Denk } 648700a0c64SWolfgang Denk 649700a0c64SWolfgang Denk static u32 650700a0c64SWolfgang Denk jffs_init_1pass_list(struct part_info *part) 651700a0c64SWolfgang Denk { 652700a0c64SWolfgang Denk struct b_lists *pL; 653700a0c64SWolfgang Denk 654700a0c64SWolfgang Denk jffs2_free_cache(part); 655700a0c64SWolfgang Denk 65606d01dbeSwdenk if (NULL != (part->jffs2_priv = malloc(sizeof(struct b_lists)))) { 65706d01dbeSwdenk pL = (struct b_lists *)part->jffs2_priv; 65806d01dbeSwdenk 65906d01dbeSwdenk memset(pL, 0, sizeof(*pL)); 6606d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #ifdef CONFIG_SYS_JFFS2_SORT_FRAGMENTS 66106d01dbeSwdenk pL->dir.listCompare = compare_dirents; 66206d01dbeSwdenk pL->frag.listCompare = compare_inodes; 66306d01dbeSwdenk #endif 664fe8c2806Swdenk } 665fe8c2806Swdenk return 0; 666fe8c2806Swdenk } 667fe8c2806Swdenk 668fe8c2806Swdenk /* find the inode from the slashless name given a parent */ 669fe8c2806Swdenk static long 670fe8c2806Swdenk jffs2_1pass_read_inode(struct b_lists *pL, u32 inode, char *dest) 671fe8c2806Swdenk { 672fe8c2806Swdenk struct b_node *b; 673fe8c2806Swdenk struct jffs2_raw_inode *jNode; 67406d01dbeSwdenk u32 totalSize = 0; 6757205e407Swdenk u32 latestVersion = 0; 67677ddac94SWolfgang Denk uchar *lDest; 67777ddac94SWolfgang Denk uchar *src; 678fe8c2806Swdenk int i; 679fe8c2806Swdenk u32 counter = 0; 6806d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #ifdef CONFIG_SYS_JFFS2_SORT_FRAGMENTS 6817205e407Swdenk /* Find file size before loading any data, so fragments that 6827205e407Swdenk * start past the end of file can be ignored. A fragment 6837205e407Swdenk * that is partially in the file is loaded, so extra data may 6847205e407Swdenk * be loaded up to the next 4K boundary above the file size. 6857205e407Swdenk * This shouldn't cause trouble when loading kernel images, so 6867205e407Swdenk * we will live with it. 6877205e407Swdenk */ 6887205e407Swdenk for (b = pL->frag.listHead; b != NULL; b = b->next) { 689998eaaecSwdenk jNode = (struct jffs2_raw_inode *) get_fl_mem(b->offset, 69070741004SIlya Yanok sizeof(struct jffs2_raw_inode), pL->readbuf); 6917205e407Swdenk if ((inode == jNode->ino)) { 6927205e407Swdenk /* get actual file length from the newest node */ 6937205e407Swdenk if (jNode->version >= latestVersion) { 6947205e407Swdenk totalSize = jNode->isize; 6957205e407Swdenk latestVersion = jNode->version; 6967205e407Swdenk } 6977205e407Swdenk } 69870741004SIlya Yanok put_fl_mem(jNode, pL->readbuf); 6997205e407Swdenk } 7003799b3f4SMark Tomlinson /* 7013799b3f4SMark Tomlinson * If no destination is provided, we are done. 7023799b3f4SMark Tomlinson * Just return the total size. 7033799b3f4SMark Tomlinson */ 7043799b3f4SMark Tomlinson if (!dest) 7053799b3f4SMark Tomlinson return totalSize; 7067205e407Swdenk #endif 707fe8c2806Swdenk 70806d01dbeSwdenk for (b = pL->frag.listHead; b != NULL; b = b->next) { 7092d6d93a2SMark Tomlinson /* 7102d6d93a2SMark Tomlinson * Copy just the node and not the data at this point, 7112d6d93a2SMark Tomlinson * since we don't yet know if we need this data. 7122d6d93a2SMark Tomlinson */ 7132d6d93a2SMark Tomlinson jNode = (struct jffs2_raw_inode *)get_fl_mem(b->offset, 7142d6d93a2SMark Tomlinson sizeof(struct jffs2_raw_inode), 71570741004SIlya Yanok pL->readbuf); 71646f46fd4SJeroen Hofstee if (inode == jNode->ino) { 71706d01dbeSwdenk #if 0 718fe8c2806Swdenk putLabeledWord("\r\n\r\nread_inode: totlen = ", jNode->totlen); 719fe8c2806Swdenk putLabeledWord("read_inode: inode = ", jNode->ino); 720fe8c2806Swdenk putLabeledWord("read_inode: version = ", jNode->version); 721fe8c2806Swdenk putLabeledWord("read_inode: isize = ", jNode->isize); 722fe8c2806Swdenk putLabeledWord("read_inode: offset = ", jNode->offset); 723fe8c2806Swdenk putLabeledWord("read_inode: csize = ", jNode->csize); 724fe8c2806Swdenk putLabeledWord("read_inode: dsize = ", jNode->dsize); 725fe8c2806Swdenk putLabeledWord("read_inode: compr = ", jNode->compr); 726fe8c2806Swdenk putLabeledWord("read_inode: usercompr = ", jNode->usercompr); 727fe8c2806Swdenk putLabeledWord("read_inode: flags = ", jNode->flags); 728fe8c2806Swdenk #endif 7297205e407Swdenk 7306d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #ifndef CONFIG_SYS_JFFS2_SORT_FRAGMENTS 73106d01dbeSwdenk /* get actual file length from the newest node */ 73206d01dbeSwdenk if (jNode->version >= latestVersion) { 733fe8c2806Swdenk totalSize = jNode->isize; 73406d01dbeSwdenk latestVersion = jNode->version; 735fe8c2806Swdenk } 7367205e407Swdenk #endif 737fe8c2806Swdenk 738fe8c2806Swdenk if(dest) { 7392d6d93a2SMark Tomlinson /* 7402d6d93a2SMark Tomlinson * Now that the inode has been checked, 7412d6d93a2SMark Tomlinson * read the entire inode, including data. 7422d6d93a2SMark Tomlinson */ 7432d6d93a2SMark Tomlinson put_fl_mem(jNode, pL->readbuf); 7442d6d93a2SMark Tomlinson jNode = (struct jffs2_raw_inode *) 7452d6d93a2SMark Tomlinson get_node_mem(b->offset, pL->readbuf); 7462d6d93a2SMark Tomlinson src = ((uchar *)jNode) + 7472d6d93a2SMark Tomlinson sizeof(struct jffs2_raw_inode); 74806d01dbeSwdenk /* ignore data behind latest known EOF */ 749998eaaecSwdenk if (jNode->offset > totalSize) { 75070741004SIlya Yanok put_fl_mem(jNode, pL->readbuf); 75106d01dbeSwdenk continue; 752998eaaecSwdenk } 753142a80ffSIlya Yanok if (b->datacrc == CRC_UNKNOWN) 754142a80ffSIlya Yanok b->datacrc = data_crc(jNode) ? 755142a80ffSIlya Yanok CRC_OK : CRC_BAD; 756142a80ffSIlya Yanok if (b->datacrc == CRC_BAD) { 75770741004SIlya Yanok put_fl_mem(jNode, pL->readbuf); 7588a36d31fSIlya Yanok continue; 7598a36d31fSIlya Yanok } 76006d01dbeSwdenk 76177ddac94SWolfgang Denk lDest = (uchar *) (dest + jNode->offset); 762fe8c2806Swdenk #if 0 76306d01dbeSwdenk putLabeledWord("read_inode: src = ", src); 764fe8c2806Swdenk putLabeledWord("read_inode: dest = ", lDest); 765fe8c2806Swdenk #endif 766fe8c2806Swdenk switch (jNode->compr) { 767fe8c2806Swdenk case JFFS2_COMPR_NONE: 76816b9afd2SWolfgang Denk ldr_memcpy(lDest, src, jNode->dsize); 769fe8c2806Swdenk break; 770fe8c2806Swdenk case JFFS2_COMPR_ZERO: 771fe8c2806Swdenk for (i = 0; i < jNode->dsize; i++) 772fe8c2806Swdenk *(lDest++) = 0; 773fe8c2806Swdenk break; 774fe8c2806Swdenk case JFFS2_COMPR_RTIME: 775fe8c2806Swdenk rtime_decompress(src, lDest, jNode->csize, jNode->dsize); 776fe8c2806Swdenk break; 777fe8c2806Swdenk case JFFS2_COMPR_DYNRUBIN: 778fe8c2806Swdenk /* this is slow but it works */ 779fe8c2806Swdenk dynrubin_decompress(src, lDest, jNode->csize, jNode->dsize); 780fe8c2806Swdenk break; 781fe8c2806Swdenk case JFFS2_COMPR_ZLIB: 78216b9afd2SWolfgang Denk zlib_decompress(src, lDest, jNode->csize, jNode->dsize); 783fe8c2806Swdenk break; 784f0983371SWolfgang Denk #if defined(CONFIG_JFFS2_LZO) 78507cc0999Swdenk case JFFS2_COMPR_LZO: 78616b9afd2SWolfgang Denk lzo_decompress(src, lDest, jNode->csize, jNode->dsize); 78707cc0999Swdenk break; 78807cc0999Swdenk #endif 789fe8c2806Swdenk default: 790fe8c2806Swdenk /* unknown */ 7916052cbabSLoïc Minier putLabeledWord("UNKNOWN COMPRESSION METHOD = ", jNode->compr); 79270741004SIlya Yanok put_fl_mem(jNode, pL->readbuf); 793fe8c2806Swdenk return -1; 794fe8c2806Swdenk break; 795fe8c2806Swdenk } 796fe8c2806Swdenk } 797fe8c2806Swdenk 798fe8c2806Swdenk #if 0 799fe8c2806Swdenk putLabeledWord("read_inode: totalSize = ", totalSize); 800fe8c2806Swdenk #endif 801fe8c2806Swdenk } 802fe8c2806Swdenk counter++; 80370741004SIlya Yanok put_fl_mem(jNode, pL->readbuf); 804fe8c2806Swdenk } 805fe8c2806Swdenk 806fe8c2806Swdenk #if 0 80706d01dbeSwdenk putLabeledWord("read_inode: returning = ", totalSize); 808fe8c2806Swdenk #endif 80906d01dbeSwdenk return totalSize; 810fe8c2806Swdenk } 811fe8c2806Swdenk 812fe8c2806Swdenk /* find the inode from the slashless name given a parent */ 813fe8c2806Swdenk static u32 814fe8c2806Swdenk jffs2_1pass_find_inode(struct b_lists * pL, const char *name, u32 pino) 815fe8c2806Swdenk { 816fe8c2806Swdenk struct b_node *b; 817fe8c2806Swdenk struct jffs2_raw_dirent *jDir; 818fe8c2806Swdenk int len; 819fe8c2806Swdenk u32 counter; 820fe8c2806Swdenk u32 version = 0; 821fe8c2806Swdenk u32 inode = 0; 822fe8c2806Swdenk 823fe8c2806Swdenk /* name is assumed slash free */ 824fe8c2806Swdenk len = strlen(name); 825fe8c2806Swdenk 826fe8c2806Swdenk counter = 0; 827fe8c2806Swdenk /* we need to search all and return the inode with the highest version */ 82806d01dbeSwdenk for(b = pL->dir.listHead; b; b = b->next, counter++) { 82970741004SIlya Yanok jDir = (struct jffs2_raw_dirent *) get_node_mem(b->offset, 83070741004SIlya Yanok pL->readbuf); 83106d01dbeSwdenk if ((pino == jDir->pino) && (len == jDir->nsize) && 83277ddac94SWolfgang Denk (!strncmp((char *)jDir->name, name, len))) { /* a match */ 833998eaaecSwdenk if (jDir->version < version) { 83470741004SIlya Yanok put_fl_mem(jDir, pL->readbuf); 8357205e407Swdenk continue; 836998eaaecSwdenk } 837fe8c2806Swdenk 8387205e407Swdenk if (jDir->version == version && inode != 0) { 8397205e407Swdenk /* I'm pretty sure this isn't legal */ 840fe8c2806Swdenk putstr(" ** ERROR ** "); 841fe8c2806Swdenk putnstr(jDir->name, jDir->nsize); 842fe8c2806Swdenk putLabeledWord(" has dup version =", version); 843fe8c2806Swdenk } 844fe8c2806Swdenk inode = jDir->ino; 845fe8c2806Swdenk version = jDir->version; 846fe8c2806Swdenk } 847fe8c2806Swdenk #if 0 848fe8c2806Swdenk putstr("\r\nfind_inode:p&l ->"); 849fe8c2806Swdenk putnstr(jDir->name, jDir->nsize); 850fe8c2806Swdenk putstr("\r\n"); 851fe8c2806Swdenk putLabeledWord("pino = ", jDir->pino); 852fe8c2806Swdenk putLabeledWord("nsize = ", jDir->nsize); 853fe8c2806Swdenk putLabeledWord("b = ", (u32) b); 854fe8c2806Swdenk putLabeledWord("counter = ", counter); 855fe8c2806Swdenk #endif 85670741004SIlya Yanok put_fl_mem(jDir, pL->readbuf); 857fe8c2806Swdenk } 858fe8c2806Swdenk return inode; 859fe8c2806Swdenk } 860fe8c2806Swdenk 861180d3f74Swdenk char *mkmodestr(unsigned long mode, char *str) 862fe8c2806Swdenk { 863fe8c2806Swdenk static const char *l = "xwr"; 864fe8c2806Swdenk int mask = 1, i; 865fe8c2806Swdenk char c; 866fe8c2806Swdenk 867fe8c2806Swdenk switch (mode & S_IFMT) { 868fe8c2806Swdenk case S_IFDIR: str[0] = 'd'; break; 869fe8c2806Swdenk case S_IFBLK: str[0] = 'b'; break; 870fe8c2806Swdenk case S_IFCHR: str[0] = 'c'; break; 871fe8c2806Swdenk case S_IFIFO: str[0] = 'f'; break; 872fe8c2806Swdenk case S_IFLNK: str[0] = 'l'; break; 873fe8c2806Swdenk case S_IFSOCK: str[0] = 's'; break; 874fe8c2806Swdenk case S_IFREG: str[0] = '-'; break; 875fe8c2806Swdenk default: str[0] = '?'; 876fe8c2806Swdenk } 877fe8c2806Swdenk 878fe8c2806Swdenk for(i = 0; i < 9; i++) { 879fe8c2806Swdenk c = l[i%3]; 880fe8c2806Swdenk str[9-i] = (mode & mask)?c:'-'; 881fe8c2806Swdenk mask = mask<<1; 882fe8c2806Swdenk } 883fe8c2806Swdenk 884fe8c2806Swdenk if(mode & S_ISUID) str[3] = (mode & S_IXUSR)?'s':'S'; 885fe8c2806Swdenk if(mode & S_ISGID) str[6] = (mode & S_IXGRP)?'s':'S'; 886fe8c2806Swdenk if(mode & S_ISVTX) str[9] = (mode & S_IXOTH)?'t':'T'; 887fe8c2806Swdenk str[10] = '\0'; 888fe8c2806Swdenk return str; 889fe8c2806Swdenk } 890fe8c2806Swdenk 891fe8c2806Swdenk static inline void dump_stat(struct stat *st, const char *name) 892fe8c2806Swdenk { 893fe8c2806Swdenk char str[20]; 894fe8c2806Swdenk char s[64], *p; 895fe8c2806Swdenk 896fe8c2806Swdenk if (st->st_mtime == (time_t)(-1)) /* some ctimes really hate -1 */ 897fe8c2806Swdenk st->st_mtime = 1; 898fe8c2806Swdenk 89977ddac94SWolfgang Denk ctime_r((time_t *)&st->st_mtime, s/*,64*/); /* newlib ctime doesn't have buflen */ 900fe8c2806Swdenk 901fe8c2806Swdenk if ((p = strchr(s,'\n')) != NULL) *p = '\0'; 902fe8c2806Swdenk if ((p = strchr(s,'\r')) != NULL) *p = '\0'; 903fe8c2806Swdenk 904fe8c2806Swdenk /* 905fe8c2806Swdenk printf("%6lo %s %8ld %s %s\n", st->st_mode, mkmodestr(st->st_mode, str), 906fe8c2806Swdenk st->st_size, s, name); 907fe8c2806Swdenk */ 908fe8c2806Swdenk 909fe8c2806Swdenk printf(" %s %8ld %s %s", mkmodestr(st->st_mode,str), st->st_size, s, name); 910fe8c2806Swdenk } 911fe8c2806Swdenk 912fe8c2806Swdenk static inline u32 dump_inode(struct b_lists * pL, struct jffs2_raw_dirent *d, struct jffs2_raw_inode *i) 913fe8c2806Swdenk { 914fe8c2806Swdenk char fname[256]; 915fe8c2806Swdenk struct stat st; 916fe8c2806Swdenk 917fe8c2806Swdenk if(!d || !i) return -1; 918fe8c2806Swdenk 91977ddac94SWolfgang Denk strncpy(fname, (char *)d->name, d->nsize); 920fe8c2806Swdenk fname[d->nsize] = '\0'; 921fe8c2806Swdenk 922fe8c2806Swdenk memset(&st,0,sizeof(st)); 923fe8c2806Swdenk 924fe8c2806Swdenk st.st_mtime = i->mtime; 925fe8c2806Swdenk st.st_mode = i->mode; 926fe8c2806Swdenk st.st_ino = i->ino; 927f7384695SIlya Yanok st.st_size = i->isize; 928fe8c2806Swdenk 929fe8c2806Swdenk dump_stat(&st, fname); 930fe8c2806Swdenk 931fe8c2806Swdenk if (d->type == DT_LNK) { 932fe8c2806Swdenk unsigned char *src = (unsigned char *) (&i[1]); 933fe8c2806Swdenk putstr(" -> "); 934fe8c2806Swdenk putnstr(src, (int)i->dsize); 935fe8c2806Swdenk } 936fe8c2806Swdenk 937fe8c2806Swdenk putstr("\r\n"); 938fe8c2806Swdenk 939fe8c2806Swdenk return 0; 940fe8c2806Swdenk } 941fe8c2806Swdenk 942fe8c2806Swdenk /* list inodes with the given pino */ 943fe8c2806Swdenk static u32 944fe8c2806Swdenk jffs2_1pass_list_inodes(struct b_lists * pL, u32 pino) 945fe8c2806Swdenk { 946fe8c2806Swdenk struct b_node *b; 947fe8c2806Swdenk struct jffs2_raw_dirent *jDir; 948fe8c2806Swdenk 94906d01dbeSwdenk for (b = pL->dir.listHead; b; b = b->next) { 95070741004SIlya Yanok jDir = (struct jffs2_raw_dirent *) get_node_mem(b->offset, 95170741004SIlya Yanok pL->readbuf); 952891224a5SMark Tomlinson if (pino == jDir->pino) { 953fe8c2806Swdenk u32 i_version = 0; 954fe8c2806Swdenk struct jffs2_raw_inode *jNode, *i = NULL; 955891224a5SMark Tomlinson struct b_node *b2; 956fe8c2806Swdenk 957891224a5SMark Tomlinson #ifdef CONFIG_SYS_JFFS2_SORT_FRAGMENTS 958891224a5SMark Tomlinson /* Check for more recent versions of this file */ 959891224a5SMark Tomlinson int match; 960891224a5SMark Tomlinson do { 961891224a5SMark Tomlinson struct b_node *next = b->next; 962891224a5SMark Tomlinson struct jffs2_raw_dirent *jDirNext; 963891224a5SMark Tomlinson if (!next) 964891224a5SMark Tomlinson break; 965891224a5SMark Tomlinson jDirNext = (struct jffs2_raw_dirent *) 966891224a5SMark Tomlinson get_node_mem(next->offset, NULL); 967891224a5SMark Tomlinson match = jDirNext->pino == jDir->pino && 968891224a5SMark Tomlinson jDirNext->nsize == jDir->nsize && 969891224a5SMark Tomlinson strncmp((char *)jDirNext->name, 970891224a5SMark Tomlinson (char *)jDir->name, 971891224a5SMark Tomlinson jDir->nsize) == 0; 972891224a5SMark Tomlinson if (match) { 973891224a5SMark Tomlinson /* Use next. It is more recent */ 974891224a5SMark Tomlinson b = next; 975891224a5SMark Tomlinson /* Update buffer with the new info */ 976891224a5SMark Tomlinson *jDir = *jDirNext; 977891224a5SMark Tomlinson } 978891224a5SMark Tomlinson put_fl_mem(jDirNext, NULL); 979891224a5SMark Tomlinson } while (match); 980891224a5SMark Tomlinson #endif 981891224a5SMark Tomlinson if (jDir->ino == 0) { 982891224a5SMark Tomlinson /* Deleted file */ 983891224a5SMark Tomlinson put_fl_mem(jDir, pL->readbuf); 984891224a5SMark Tomlinson continue; 985891224a5SMark Tomlinson } 986891224a5SMark Tomlinson 987891224a5SMark Tomlinson for (b2 = pL->frag.listHead; b2; b2 = b2->next) { 988998eaaecSwdenk jNode = (struct jffs2_raw_inode *) 9892d6d93a2SMark Tomlinson get_fl_mem(b2->offset, sizeof(*jNode), 9902d6d93a2SMark Tomlinson NULL); 9912d6d93a2SMark Tomlinson if (jNode->ino == jDir->ino && 9922d6d93a2SMark Tomlinson jNode->version >= i_version) { 993f7384695SIlya Yanok i_version = jNode->version; 99432877d66Swdenk if (i) 99570741004SIlya Yanok put_fl_mem(i, NULL); 996cf8bc577Swdenk 997cf8bc577Swdenk if (jDir->type == DT_LNK) 99870741004SIlya Yanok i = get_node_mem(b2->offset, 99970741004SIlya Yanok NULL); 1000cf8bc577Swdenk else 100170741004SIlya Yanok i = get_fl_mem(b2->offset, 100270741004SIlya Yanok sizeof(*i), 100370741004SIlya Yanok NULL); 100432877d66Swdenk } 10052d6d93a2SMark Tomlinson put_fl_mem(jNode, NULL); 1006fe8c2806Swdenk } 1007fe8c2806Swdenk 1008fe8c2806Swdenk dump_inode(pL, jDir, i); 100970741004SIlya Yanok put_fl_mem(i, NULL); 1010fe8c2806Swdenk } 101170741004SIlya Yanok put_fl_mem(jDir, pL->readbuf); 1012fe8c2806Swdenk } 1013fe8c2806Swdenk return pino; 1014fe8c2806Swdenk } 1015fe8c2806Swdenk 1016fe8c2806Swdenk static u32 1017fe8c2806Swdenk jffs2_1pass_search_inode(struct b_lists * pL, const char *fname, u32 pino) 1018fe8c2806Swdenk { 1019fe8c2806Swdenk int i; 1020fe8c2806Swdenk char tmp[256]; 1021fe8c2806Swdenk char working_tmp[256]; 1022fe8c2806Swdenk char *c; 1023fe8c2806Swdenk 1024fe8c2806Swdenk /* discard any leading slash */ 1025fe8c2806Swdenk i = 0; 1026fe8c2806Swdenk while (fname[i] == '/') 1027fe8c2806Swdenk i++; 1028fe8c2806Swdenk strcpy(tmp, &fname[i]); 1029fe8c2806Swdenk 1030fe8c2806Swdenk while ((c = (char *) strchr(tmp, '/'))) /* we are still dired searching */ 1031fe8c2806Swdenk { 1032fe8c2806Swdenk strncpy(working_tmp, tmp, c - tmp); 1033fe8c2806Swdenk working_tmp[c - tmp] = '\0'; 1034fe8c2806Swdenk #if 0 1035fe8c2806Swdenk putstr("search_inode: tmp = "); 1036fe8c2806Swdenk putstr(tmp); 1037fe8c2806Swdenk putstr("\r\n"); 1038fe8c2806Swdenk putstr("search_inode: wtmp = "); 1039fe8c2806Swdenk putstr(working_tmp); 1040fe8c2806Swdenk putstr("\r\n"); 1041fe8c2806Swdenk putstr("search_inode: c = "); 1042fe8c2806Swdenk putstr(c); 1043fe8c2806Swdenk putstr("\r\n"); 1044fe8c2806Swdenk #endif 1045fe8c2806Swdenk for (i = 0; i < strlen(c) - 1; i++) 1046fe8c2806Swdenk tmp[i] = c[i + 1]; 1047fe8c2806Swdenk tmp[i] = '\0'; 1048fe8c2806Swdenk #if 0 1049fe8c2806Swdenk putstr("search_inode: post tmp = "); 1050fe8c2806Swdenk putstr(tmp); 1051fe8c2806Swdenk putstr("\r\n"); 1052fe8c2806Swdenk #endif 1053fe8c2806Swdenk 1054fe8c2806Swdenk if (!(pino = jffs2_1pass_find_inode(pL, working_tmp, pino))) { 1055fe8c2806Swdenk putstr("find_inode failed for name="); 1056fe8c2806Swdenk putstr(working_tmp); 1057fe8c2806Swdenk putstr("\r\n"); 1058fe8c2806Swdenk return 0; 1059fe8c2806Swdenk } 1060fe8c2806Swdenk } 1061fe8c2806Swdenk /* this is for the bare filename, directories have already been mapped */ 1062fe8c2806Swdenk if (!(pino = jffs2_1pass_find_inode(pL, tmp, pino))) { 1063fe8c2806Swdenk putstr("find_inode failed for name="); 1064fe8c2806Swdenk putstr(tmp); 1065fe8c2806Swdenk putstr("\r\n"); 1066fe8c2806Swdenk return 0; 1067fe8c2806Swdenk } 1068fe8c2806Swdenk return pino; 1069fe8c2806Swdenk 1070fe8c2806Swdenk } 1071fe8c2806Swdenk 1072fe8c2806Swdenk static u32 1073fe8c2806Swdenk jffs2_1pass_resolve_inode(struct b_lists * pL, u32 ino) 1074fe8c2806Swdenk { 1075fe8c2806Swdenk struct b_node *b; 1076fe8c2806Swdenk struct b_node *b2; 1077fe8c2806Swdenk struct jffs2_raw_dirent *jDir; 1078fe8c2806Swdenk struct jffs2_raw_inode *jNode; 1079998eaaecSwdenk u8 jDirFoundType = 0; 1080998eaaecSwdenk u32 jDirFoundIno = 0; 1081998eaaecSwdenk u32 jDirFoundPino = 0; 1082fe8c2806Swdenk char tmp[256]; 1083fe8c2806Swdenk u32 version = 0; 1084fe8c2806Swdenk u32 pino; 1085fe8c2806Swdenk unsigned char *src; 1086fe8c2806Swdenk 1087fe8c2806Swdenk /* we need to search all and return the inode with the highest version */ 108806d01dbeSwdenk for(b = pL->dir.listHead; b; b = b->next) { 108970741004SIlya Yanok jDir = (struct jffs2_raw_dirent *) get_node_mem(b->offset, 109070741004SIlya Yanok pL->readbuf); 1091fe8c2806Swdenk if (ino == jDir->ino) { 1092998eaaecSwdenk if (jDir->version < version) { 109370741004SIlya Yanok put_fl_mem(jDir, pL->readbuf); 10947205e407Swdenk continue; 1095998eaaecSwdenk } 1096fe8c2806Swdenk 1097998eaaecSwdenk if (jDir->version == version && jDirFoundType) { 10987205e407Swdenk /* I'm pretty sure this isn't legal */ 1099fe8c2806Swdenk putstr(" ** ERROR ** "); 1100fe8c2806Swdenk putnstr(jDir->name, jDir->nsize); 1101fe8c2806Swdenk putLabeledWord(" has dup version (resolve) = ", 1102fe8c2806Swdenk version); 1103fe8c2806Swdenk } 1104fe8c2806Swdenk 1105998eaaecSwdenk jDirFoundType = jDir->type; 1106998eaaecSwdenk jDirFoundIno = jDir->ino; 1107998eaaecSwdenk jDirFoundPino = jDir->pino; 1108fe8c2806Swdenk version = jDir->version; 1109fe8c2806Swdenk } 111070741004SIlya Yanok put_fl_mem(jDir, pL->readbuf); 1111fe8c2806Swdenk } 1112fe8c2806Swdenk /* now we found the right entry again. (shoulda returned inode*) */ 1113998eaaecSwdenk if (jDirFoundType != DT_LNK) 1114998eaaecSwdenk return jDirFoundIno; 111506d01dbeSwdenk 111606d01dbeSwdenk /* it's a soft link so we follow it again. */ 111706d01dbeSwdenk b2 = pL->frag.listHead; 1118fe8c2806Swdenk while (b2) { 111970741004SIlya Yanok jNode = (struct jffs2_raw_inode *) get_node_mem(b2->offset, 112070741004SIlya Yanok pL->readbuf); 1121998eaaecSwdenk if (jNode->ino == jDirFoundIno) { 11222729af9dSwdenk src = (unsigned char *)jNode + sizeof(struct jffs2_raw_inode); 1123fe8c2806Swdenk 1124fe8c2806Swdenk #if 0 1125fe8c2806Swdenk putLabeledWord("\t\t dsize = ", jNode->dsize); 1126fe8c2806Swdenk putstr("\t\t target = "); 1127fe8c2806Swdenk putnstr(src, jNode->dsize); 1128fe8c2806Swdenk putstr("\r\n"); 1129fe8c2806Swdenk #endif 113077ddac94SWolfgang Denk strncpy(tmp, (char *)src, jNode->dsize); 1131fe8c2806Swdenk tmp[jNode->dsize] = '\0'; 113270741004SIlya Yanok put_fl_mem(jNode, pL->readbuf); 1133fe8c2806Swdenk break; 1134fe8c2806Swdenk } 1135fe8c2806Swdenk b2 = b2->next; 113670741004SIlya Yanok put_fl_mem(jNode, pL->readbuf); 1137fe8c2806Swdenk } 1138fe8c2806Swdenk /* ok so the name of the new file to find is in tmp */ 1139fe8c2806Swdenk /* if it starts with a slash it is root based else shared dirs */ 1140fe8c2806Swdenk if (tmp[0] == '/') 1141fe8c2806Swdenk pino = 1; 1142fe8c2806Swdenk else 1143998eaaecSwdenk pino = jDirFoundPino; 1144fe8c2806Swdenk 1145fe8c2806Swdenk return jffs2_1pass_search_inode(pL, tmp, pino); 1146fe8c2806Swdenk } 1147fe8c2806Swdenk 1148fe8c2806Swdenk static u32 1149fe8c2806Swdenk jffs2_1pass_search_list_inodes(struct b_lists * pL, const char *fname, u32 pino) 1150fe8c2806Swdenk { 1151fe8c2806Swdenk int i; 1152fe8c2806Swdenk char tmp[256]; 1153fe8c2806Swdenk char working_tmp[256]; 1154fe8c2806Swdenk char *c; 1155fe8c2806Swdenk 1156fe8c2806Swdenk /* discard any leading slash */ 1157fe8c2806Swdenk i = 0; 1158fe8c2806Swdenk while (fname[i] == '/') 1159fe8c2806Swdenk i++; 1160fe8c2806Swdenk strcpy(tmp, &fname[i]); 1161fe8c2806Swdenk working_tmp[0] = '\0'; 1162fe8c2806Swdenk while ((c = (char *) strchr(tmp, '/'))) /* we are still dired searching */ 1163fe8c2806Swdenk { 1164fe8c2806Swdenk strncpy(working_tmp, tmp, c - tmp); 1165fe8c2806Swdenk working_tmp[c - tmp] = '\0'; 1166fe8c2806Swdenk for (i = 0; i < strlen(c) - 1; i++) 1167fe8c2806Swdenk tmp[i] = c[i + 1]; 1168fe8c2806Swdenk tmp[i] = '\0'; 1169fe8c2806Swdenk /* only a failure if we arent looking at top level */ 117006d01dbeSwdenk if (!(pino = jffs2_1pass_find_inode(pL, working_tmp, pino)) && 117106d01dbeSwdenk (working_tmp[0])) { 1172fe8c2806Swdenk putstr("find_inode failed for name="); 1173fe8c2806Swdenk putstr(working_tmp); 1174fe8c2806Swdenk putstr("\r\n"); 1175fe8c2806Swdenk return 0; 1176fe8c2806Swdenk } 1177fe8c2806Swdenk } 1178fe8c2806Swdenk 1179fe8c2806Swdenk if (tmp[0] && !(pino = jffs2_1pass_find_inode(pL, tmp, pino))) { 1180fe8c2806Swdenk putstr("find_inode failed for name="); 1181fe8c2806Swdenk putstr(tmp); 1182fe8c2806Swdenk putstr("\r\n"); 1183fe8c2806Swdenk return 0; 1184fe8c2806Swdenk } 1185fe8c2806Swdenk /* this is for the bare filename, directories have already been mapped */ 1186fe8c2806Swdenk if (!(pino = jffs2_1pass_list_inodes(pL, pino))) { 1187fe8c2806Swdenk putstr("find_inode failed for name="); 1188fe8c2806Swdenk putstr(tmp); 1189fe8c2806Swdenk putstr("\r\n"); 1190fe8c2806Swdenk return 0; 1191fe8c2806Swdenk } 1192fe8c2806Swdenk return pino; 1193fe8c2806Swdenk 1194fe8c2806Swdenk } 1195fe8c2806Swdenk 1196fe8c2806Swdenk unsigned char 1197fe8c2806Swdenk jffs2_1pass_rescan_needed(struct part_info *part) 1198fe8c2806Swdenk { 1199fe8c2806Swdenk struct b_node *b; 1200998eaaecSwdenk struct jffs2_unknown_node onode; 1201fe8c2806Swdenk struct jffs2_unknown_node *node; 1202fe8c2806Swdenk struct b_lists *pL = (struct b_lists *)part->jffs2_priv; 1203fe8c2806Swdenk 1204fe8c2806Swdenk if (part->jffs2_priv == 0){ 1205fe8c2806Swdenk DEBUGF ("rescan: First time in use\n"); 1206fe8c2806Swdenk return 1; 1207fe8c2806Swdenk } 1208700a0c64SWolfgang Denk 1209fe8c2806Swdenk /* if we have no list, we need to rescan */ 121006d01dbeSwdenk if (pL->frag.listCount == 0) { 1211fe8c2806Swdenk DEBUGF ("rescan: fraglist zero\n"); 1212fe8c2806Swdenk return 1; 1213fe8c2806Swdenk } 1214fe8c2806Swdenk 121506d01dbeSwdenk /* but suppose someone reflashed a partition at the same offset... */ 121606d01dbeSwdenk b = pL->dir.listHead; 1217fe8c2806Swdenk while (b) { 1218998eaaecSwdenk node = (struct jffs2_unknown_node *) get_fl_mem(b->offset, 1219998eaaecSwdenk sizeof(onode), &onode); 1220fe8c2806Swdenk if (node->nodetype != JFFS2_NODETYPE_DIRENT) { 122106d01dbeSwdenk DEBUGF ("rescan: fs changed beneath me? (%lx)\n", 122206d01dbeSwdenk (unsigned long) b->offset); 1223fe8c2806Swdenk return 1; 1224fe8c2806Swdenk } 1225fe8c2806Swdenk b = b->next; 1226fe8c2806Swdenk } 1227fe8c2806Swdenk return 0; 1228fe8c2806Swdenk } 1229fe8c2806Swdenk 12308cf19b9fSIlya Yanok #ifdef CONFIG_JFFS2_SUMMARY 12318cf19b9fSIlya Yanok static u32 sum_get_unaligned32(u32 *ptr) 12328cf19b9fSIlya Yanok { 12338cf19b9fSIlya Yanok u32 val; 12348cf19b9fSIlya Yanok u8 *p = (u8 *)ptr; 12358cf19b9fSIlya Yanok 12368cf19b9fSIlya Yanok val = *p | (*(p + 1) << 8) | (*(p + 2) << 16) | (*(p + 3) << 24); 12378cf19b9fSIlya Yanok 12388cf19b9fSIlya Yanok return __le32_to_cpu(val); 12398cf19b9fSIlya Yanok } 12408cf19b9fSIlya Yanok 12418cf19b9fSIlya Yanok static u16 sum_get_unaligned16(u16 *ptr) 12428cf19b9fSIlya Yanok { 12438cf19b9fSIlya Yanok u16 val; 12448cf19b9fSIlya Yanok u8 *p = (u8 *)ptr; 12458cf19b9fSIlya Yanok 12468cf19b9fSIlya Yanok val = *p | (*(p + 1) << 8); 12478cf19b9fSIlya Yanok 12488cf19b9fSIlya Yanok return __le16_to_cpu(val); 12498cf19b9fSIlya Yanok } 12508cf19b9fSIlya Yanok 12519b707622SIlya Yanok #define dbg_summary(...) do {} while (0); 12528cf19b9fSIlya Yanok /* 12538cf19b9fSIlya Yanok * Process the stored summary information - helper function for 12549b707622SIlya Yanok * jffs2_sum_scan_sumnode() 12559b707622SIlya Yanok */ 12569b707622SIlya Yanok 12579b707622SIlya Yanok static int jffs2_sum_process_sum_data(struct part_info *part, uint32_t offset, 12589b707622SIlya Yanok struct jffs2_raw_summary *summary, 12599b707622SIlya Yanok struct b_lists *pL) 12609b707622SIlya Yanok { 12619b707622SIlya Yanok void *sp; 12628cf19b9fSIlya Yanok int i, pass; 12638cf19b9fSIlya Yanok void *ret; 12649b707622SIlya Yanok 12658cf19b9fSIlya Yanok for (pass = 0; pass < 2; pass++) { 12669b707622SIlya Yanok sp = summary->sum; 12679b707622SIlya Yanok 12689b707622SIlya Yanok for (i = 0; i < summary->sum_num; i++) { 12698cf19b9fSIlya Yanok struct jffs2_sum_unknown_flash *spu = sp; 12709b707622SIlya Yanok dbg_summary("processing summary index %d\n", i); 12719b707622SIlya Yanok 12728cf19b9fSIlya Yanok switch (sum_get_unaligned16(&spu->nodetype)) { 12739b707622SIlya Yanok case JFFS2_NODETYPE_INODE: { 12749b707622SIlya Yanok struct jffs2_sum_inode_flash *spi; 12758cf19b9fSIlya Yanok if (pass) { 12769b707622SIlya Yanok spi = sp; 12779b707622SIlya Yanok 12788cf19b9fSIlya Yanok ret = insert_node(&pL->frag, 12798cf19b9fSIlya Yanok (u32)part->offset + 12808cf19b9fSIlya Yanok offset + 12818cf19b9fSIlya Yanok sum_get_unaligned32( 12828cf19b9fSIlya Yanok &spi->offset)); 12838cf19b9fSIlya Yanok if (ret == NULL) 12849b707622SIlya Yanok return -1; 12858cf19b9fSIlya Yanok } 12869b707622SIlya Yanok 12879b707622SIlya Yanok sp += JFFS2_SUMMARY_INODE_SIZE; 12889b707622SIlya Yanok 12899b707622SIlya Yanok break; 12909b707622SIlya Yanok } 12919b707622SIlya Yanok case JFFS2_NODETYPE_DIRENT: { 12929b707622SIlya Yanok struct jffs2_sum_dirent_flash *spd; 12939b707622SIlya Yanok spd = sp; 12948cf19b9fSIlya Yanok if (pass) { 12958cf19b9fSIlya Yanok ret = insert_node(&pL->dir, 12968cf19b9fSIlya Yanok (u32) part->offset + 12978cf19b9fSIlya Yanok offset + 12988cf19b9fSIlya Yanok sum_get_unaligned32( 12998cf19b9fSIlya Yanok &spd->offset)); 13008cf19b9fSIlya Yanok if (ret == NULL) 13019b707622SIlya Yanok return -1; 13028cf19b9fSIlya Yanok } 13039b707622SIlya Yanok 13048cf19b9fSIlya Yanok sp += JFFS2_SUMMARY_DIRENT_SIZE( 13058cf19b9fSIlya Yanok spd->nsize); 13069b707622SIlya Yanok 13079b707622SIlya Yanok break; 13089b707622SIlya Yanok } 13099b707622SIlya Yanok default : { 13108cf19b9fSIlya Yanok uint16_t nodetype = sum_get_unaligned16( 13118cf19b9fSIlya Yanok &spu->nodetype); 13128cf19b9fSIlya Yanok printf("Unsupported node type %x found" 13138cf19b9fSIlya Yanok " in summary!\n", 13148cf19b9fSIlya Yanok nodetype); 13158cf19b9fSIlya Yanok if ((nodetype & JFFS2_COMPAT_MASK) == 13168cf19b9fSIlya Yanok JFFS2_FEATURE_INCOMPAT) 13178cf19b9fSIlya Yanok return -EIO; 13188cf19b9fSIlya Yanok return -EBADMSG; 13198cf19b9fSIlya Yanok } 13209b707622SIlya Yanok } 13219b707622SIlya Yanok } 13229b707622SIlya Yanok } 13239b707622SIlya Yanok return 0; 13249b707622SIlya Yanok } 13259b707622SIlya Yanok 13269b707622SIlya Yanok /* Process the summary node - called from jffs2_scan_eraseblock() */ 13279b707622SIlya Yanok int jffs2_sum_scan_sumnode(struct part_info *part, uint32_t offset, 13289b707622SIlya Yanok struct jffs2_raw_summary *summary, uint32_t sumsize, 13299b707622SIlya Yanok struct b_lists *pL) 13309b707622SIlya Yanok { 13319b707622SIlya Yanok struct jffs2_unknown_node crcnode; 13321c8fdf87STom Rini int ret, __maybe_unused ofs; 13339b707622SIlya Yanok uint32_t crc; 13349b707622SIlya Yanok 13359b707622SIlya Yanok ofs = part->sector_size - sumsize; 13369b707622SIlya Yanok 13379b707622SIlya Yanok dbg_summary("summary found for 0x%08x at 0x%08x (0x%x bytes)\n", 13389b707622SIlya Yanok offset, offset + ofs, sumsize); 13399b707622SIlya Yanok 13409b707622SIlya Yanok /* OK, now check for node validity and CRC */ 13419b707622SIlya Yanok crcnode.magic = JFFS2_MAGIC_BITMASK; 13429b707622SIlya Yanok crcnode.nodetype = JFFS2_NODETYPE_SUMMARY; 13439b707622SIlya Yanok crcnode.totlen = summary->totlen; 13449b707622SIlya Yanok crc = crc32_no_comp(0, (uchar *)&crcnode, sizeof(crcnode)-4); 13459b707622SIlya Yanok 13469b707622SIlya Yanok if (summary->hdr_crc != crc) { 13479b707622SIlya Yanok dbg_summary("Summary node header is corrupt (bad CRC or " 13489b707622SIlya Yanok "no summary at all)\n"); 13499b707622SIlya Yanok goto crc_err; 13509b707622SIlya Yanok } 13519b707622SIlya Yanok 13529b707622SIlya Yanok if (summary->totlen != sumsize) { 13539b707622SIlya Yanok dbg_summary("Summary node is corrupt (wrong erasesize?)\n"); 13549b707622SIlya Yanok goto crc_err; 13559b707622SIlya Yanok } 13569b707622SIlya Yanok 13579b707622SIlya Yanok crc = crc32_no_comp(0, (uchar *)summary, 13589b707622SIlya Yanok sizeof(struct jffs2_raw_summary)-8); 13599b707622SIlya Yanok 13609b707622SIlya Yanok if (summary->node_crc != crc) { 13619b707622SIlya Yanok dbg_summary("Summary node is corrupt (bad CRC)\n"); 13629b707622SIlya Yanok goto crc_err; 13639b707622SIlya Yanok } 13649b707622SIlya Yanok 13659b707622SIlya Yanok crc = crc32_no_comp(0, (uchar *)summary->sum, 13669b707622SIlya Yanok sumsize - sizeof(struct jffs2_raw_summary)); 13679b707622SIlya Yanok 13689b707622SIlya Yanok if (summary->sum_crc != crc) { 13699b707622SIlya Yanok dbg_summary("Summary node data is corrupt (bad CRC)\n"); 13709b707622SIlya Yanok goto crc_err; 13719b707622SIlya Yanok } 13729b707622SIlya Yanok 13739b707622SIlya Yanok if (summary->cln_mkr) 13749b707622SIlya Yanok dbg_summary("Summary : CLEANMARKER node \n"); 13759b707622SIlya Yanok 13769b707622SIlya Yanok ret = jffs2_sum_process_sum_data(part, offset, summary, pL); 13778cf19b9fSIlya Yanok if (ret == -EBADMSG) 13788cf19b9fSIlya Yanok return 0; 13799b707622SIlya Yanok if (ret) 13809b707622SIlya Yanok return ret; /* real error */ 13819b707622SIlya Yanok 13829b707622SIlya Yanok return 1; 13839b707622SIlya Yanok 13849b707622SIlya Yanok crc_err: 13859b707622SIlya Yanok putstr("Summary node crc error, skipping summary information.\n"); 13869b707622SIlya Yanok 13879b707622SIlya Yanok return 0; 13889b707622SIlya Yanok } 13898cf19b9fSIlya Yanok #endif /* CONFIG_JFFS2_SUMMARY */ 13909b707622SIlya Yanok 139106d01dbeSwdenk #ifdef DEBUG_FRAGMENTS 139206d01dbeSwdenk static void 139306d01dbeSwdenk dump_fragments(struct b_lists *pL) 1394fe8c2806Swdenk { 1395fe8c2806Swdenk struct b_node *b; 1396998eaaecSwdenk struct jffs2_raw_inode ojNode; 1397fe8c2806Swdenk struct jffs2_raw_inode *jNode; 1398fe8c2806Swdenk 139906d01dbeSwdenk putstr("\r\n\r\n******The fragment Entries******\r\n"); 140006d01dbeSwdenk b = pL->frag.listHead; 140106d01dbeSwdenk while (b) { 1402998eaaecSwdenk jNode = (struct jffs2_raw_inode *) get_fl_mem(b->offset, 1403998eaaecSwdenk sizeof(ojNode), &ojNode); 140406d01dbeSwdenk putLabeledWord("\r\n\tbuild_list: FLASH_OFFSET = ", b->offset); 140506d01dbeSwdenk putLabeledWord("\tbuild_list: totlen = ", jNode->totlen); 140606d01dbeSwdenk putLabeledWord("\tbuild_list: inode = ", jNode->ino); 140706d01dbeSwdenk putLabeledWord("\tbuild_list: version = ", jNode->version); 140806d01dbeSwdenk putLabeledWord("\tbuild_list: isize = ", jNode->isize); 140906d01dbeSwdenk putLabeledWord("\tbuild_list: atime = ", jNode->atime); 141006d01dbeSwdenk putLabeledWord("\tbuild_list: offset = ", jNode->offset); 141106d01dbeSwdenk putLabeledWord("\tbuild_list: csize = ", jNode->csize); 141206d01dbeSwdenk putLabeledWord("\tbuild_list: dsize = ", jNode->dsize); 141306d01dbeSwdenk putLabeledWord("\tbuild_list: compr = ", jNode->compr); 141406d01dbeSwdenk putLabeledWord("\tbuild_list: usercompr = ", jNode->usercompr); 141506d01dbeSwdenk putLabeledWord("\tbuild_list: flags = ", jNode->flags); 14168bde7f77Swdenk putLabeledWord("\tbuild_list: offset = ", b->offset); /* FIXME: ? [RS] */ 141706d01dbeSwdenk b = b->next; 141806d01dbeSwdenk } 141906d01dbeSwdenk } 142006d01dbeSwdenk #endif 142106d01dbeSwdenk 142206d01dbeSwdenk #ifdef DEBUG_DIRENTS 142306d01dbeSwdenk static void 142406d01dbeSwdenk dump_dirents(struct b_lists *pL) 142506d01dbeSwdenk { 142606d01dbeSwdenk struct b_node *b; 142706d01dbeSwdenk struct jffs2_raw_dirent *jDir; 142806d01dbeSwdenk 1429fe8c2806Swdenk putstr("\r\n\r\n******The directory Entries******\r\n"); 143006d01dbeSwdenk b = pL->dir.listHead; 1431fe8c2806Swdenk while (b) { 143270741004SIlya Yanok jDir = (struct jffs2_raw_dirent *) get_node_mem(b->offset, 143370741004SIlya Yanok pL->readbuf); 1434fe8c2806Swdenk putstr("\r\n"); 1435fe8c2806Swdenk putnstr(jDir->name, jDir->nsize); 1436fe8c2806Swdenk putLabeledWord("\r\n\tbuild_list: magic = ", jDir->magic); 1437fe8c2806Swdenk putLabeledWord("\tbuild_list: nodetype = ", jDir->nodetype); 1438fe8c2806Swdenk putLabeledWord("\tbuild_list: hdr_crc = ", jDir->hdr_crc); 1439fe8c2806Swdenk putLabeledWord("\tbuild_list: pino = ", jDir->pino); 1440fe8c2806Swdenk putLabeledWord("\tbuild_list: version = ", jDir->version); 1441fe8c2806Swdenk putLabeledWord("\tbuild_list: ino = ", jDir->ino); 1442fe8c2806Swdenk putLabeledWord("\tbuild_list: mctime = ", jDir->mctime); 1443fe8c2806Swdenk putLabeledWord("\tbuild_list: nsize = ", jDir->nsize); 1444fe8c2806Swdenk putLabeledWord("\tbuild_list: type = ", jDir->type); 1445fe8c2806Swdenk putLabeledWord("\tbuild_list: node_crc = ", jDir->node_crc); 1446fe8c2806Swdenk putLabeledWord("\tbuild_list: name_crc = ", jDir->name_crc); 14478bde7f77Swdenk putLabeledWord("\tbuild_list: offset = ", b->offset); /* FIXME: ? [RS] */ 1448fe8c2806Swdenk b = b->next; 144970741004SIlya Yanok put_fl_mem(jDir, pL->readbuf); 1450fe8c2806Swdenk } 1451fe8c2806Swdenk } 145206d01dbeSwdenk #endif 145306d01dbeSwdenk 1454081adef7SMark Tomlinson #define DEFAULT_EMPTY_SCAN_SIZE 256 14558a36d31fSIlya Yanok 14568a36d31fSIlya Yanok static inline uint32_t EMPTY_SCAN_SIZE(uint32_t sector_size) 14578a36d31fSIlya Yanok { 14588a36d31fSIlya Yanok if (sector_size < DEFAULT_EMPTY_SCAN_SIZE) 14598a36d31fSIlya Yanok return sector_size; 14608a36d31fSIlya Yanok else 14618a36d31fSIlya Yanok return DEFAULT_EMPTY_SCAN_SIZE; 14628a36d31fSIlya Yanok } 14638a36d31fSIlya Yanok 146406d01dbeSwdenk static u32 146506d01dbeSwdenk jffs2_1pass_build_lists(struct part_info * part) 146606d01dbeSwdenk { 146706d01dbeSwdenk struct b_lists *pL; 146806d01dbeSwdenk struct jffs2_unknown_node *node; 146918e86724STom Rini u32 nr_sectors; 14708a36d31fSIlya Yanok u32 i; 147106d01dbeSwdenk u32 counter4 = 0; 147206d01dbeSwdenk u32 counterF = 0; 147306d01dbeSwdenk u32 counterN = 0; 147470741004SIlya Yanok u32 max_totlen = 0; 1475c5b1940fSMark Tomlinson u32 buf_size; 14768a36d31fSIlya Yanok char *buf; 147706d01dbeSwdenk 147818e86724STom Rini nr_sectors = lldiv(part->size, part->sector_size); 147906d01dbeSwdenk /* turn off the lcd. Refreshing the lcd adds 50% overhead to the */ 148006d01dbeSwdenk /* jffs2 list building enterprise nope. in newer versions the overhead is */ 148106d01dbeSwdenk /* only about 5 %. not enough to inconvenience people for. */ 148206d01dbeSwdenk /* lcd_off(); */ 148306d01dbeSwdenk 148406d01dbeSwdenk /* if we are building a list we need to refresh the cache. */ 148506d01dbeSwdenk jffs_init_1pass_list(part); 148606d01dbeSwdenk pL = (struct b_lists *)part->jffs2_priv; 1487c5b1940fSMark Tomlinson buf = malloc(DEFAULT_EMPTY_SCAN_SIZE); 14884b9206edSwdenk puts ("Scanning JFFS2 FS: "); 148906d01dbeSwdenk 149006d01dbeSwdenk /* start at the beginning of the partition */ 14918a36d31fSIlya Yanok for (i = 0; i < nr_sectors; i++) { 14928a36d31fSIlya Yanok uint32_t sector_ofs = i * part->sector_size; 14938a36d31fSIlya Yanok uint32_t buf_ofs = sector_ofs; 14949b707622SIlya Yanok uint32_t buf_len; 14958a36d31fSIlya Yanok uint32_t ofs, prevofs; 14968cf19b9fSIlya Yanok #ifdef CONFIG_JFFS2_SUMMARY 14979b707622SIlya Yanok struct jffs2_sum_marker *sm; 14989b707622SIlya Yanok void *sumptr = NULL; 14999b707622SIlya Yanok uint32_t sumlen; 15009b707622SIlya Yanok int ret; 15018cf19b9fSIlya Yanok #endif 150254a88384SMark Tomlinson /* Indicates a sector with a CLEANMARKER was found */ 150354a88384SMark Tomlinson int clean_sector = 0; 15040b8fa03bSwdenk 1505c5b1940fSMark Tomlinson /* Set buf_size to maximum length */ 1506c5b1940fSMark Tomlinson buf_size = DEFAULT_EMPTY_SCAN_SIZE; 150786d3273eSStuart Wood WATCHDOG_RESET(); 15089b707622SIlya Yanok 15098cf19b9fSIlya Yanok #ifdef CONFIG_JFFS2_SUMMARY 15109b707622SIlya Yanok buf_len = sizeof(*sm); 15119b707622SIlya Yanok 15129b707622SIlya Yanok /* Read as much as we want into the _end_ of the preallocated 15139b707622SIlya Yanok * buffer 15149b707622SIlya Yanok */ 15159b707622SIlya Yanok get_fl_mem(part->offset + sector_ofs + part->sector_size - 15169b707622SIlya Yanok buf_len, buf_len, buf + buf_size - buf_len); 15179b707622SIlya Yanok 15189b707622SIlya Yanok sm = (void *)buf + buf_size - sizeof(*sm); 15199b707622SIlya Yanok if (sm->magic == JFFS2_SUM_MAGIC) { 15209b707622SIlya Yanok sumlen = part->sector_size - sm->offset; 15219b707622SIlya Yanok sumptr = buf + buf_size - sumlen; 15229b707622SIlya Yanok 15239b707622SIlya Yanok /* Now, make sure the summary itself is available */ 15249b707622SIlya Yanok if (sumlen > buf_size) { 15259b707622SIlya Yanok /* Need to kmalloc for this. */ 15269b707622SIlya Yanok sumptr = malloc(sumlen); 15279b707622SIlya Yanok if (!sumptr) { 15289b707622SIlya Yanok putstr("Can't get memory for summary " 15299b707622SIlya Yanok "node!\n"); 1530b644006eSIlya Yanok free(buf); 1531b644006eSIlya Yanok jffs2_free_cache(part); 15329b707622SIlya Yanok return 0; 15339b707622SIlya Yanok } 15349b707622SIlya Yanok memcpy(sumptr + sumlen - buf_len, buf + 15359b707622SIlya Yanok buf_size - buf_len, buf_len); 15369b707622SIlya Yanok } 15379b707622SIlya Yanok if (buf_len < sumlen) { 15389b707622SIlya Yanok /* Need to read more so that the entire summary 15399b707622SIlya Yanok * node is present 15409b707622SIlya Yanok */ 15419b707622SIlya Yanok get_fl_mem(part->offset + sector_ofs + 15429b707622SIlya Yanok part->sector_size - sumlen, 15439b707622SIlya Yanok sumlen - buf_len, sumptr); 15449b707622SIlya Yanok } 15459b707622SIlya Yanok } 15469b707622SIlya Yanok 15479b707622SIlya Yanok if (sumptr) { 15489b707622SIlya Yanok ret = jffs2_sum_scan_sumnode(part, sector_ofs, sumptr, 15499b707622SIlya Yanok sumlen, pL); 15509b707622SIlya Yanok 15519b707622SIlya Yanok if (buf_size && sumlen > buf_size) 15529b707622SIlya Yanok free(sumptr); 1553b644006eSIlya Yanok if (ret < 0) { 1554b644006eSIlya Yanok free(buf); 1555b644006eSIlya Yanok jffs2_free_cache(part); 15569b707622SIlya Yanok return 0; 1557b644006eSIlya Yanok } 15589b707622SIlya Yanok if (ret) 15599b707622SIlya Yanok continue; 15609b707622SIlya Yanok 15619b707622SIlya Yanok } 15628cf19b9fSIlya Yanok #endif /* CONFIG_JFFS2_SUMMARY */ 15639b707622SIlya Yanok 15649b707622SIlya Yanok buf_len = EMPTY_SCAN_SIZE(part->sector_size); 15659b707622SIlya Yanok 15668a36d31fSIlya Yanok get_fl_mem((u32)part->offset + buf_ofs, buf_len, buf); 156786d3273eSStuart Wood 15688a36d31fSIlya Yanok /* We temporarily use 'ofs' as a pointer into the buffer/jeb */ 15698a36d31fSIlya Yanok ofs = 0; 15708a36d31fSIlya Yanok 15718a36d31fSIlya Yanok /* Scan only 4KiB of 0xFF before declaring it's empty */ 15728a36d31fSIlya Yanok while (ofs < EMPTY_SCAN_SIZE(part->sector_size) && 15738a36d31fSIlya Yanok *(uint32_t *)(&buf[ofs]) == 0xFFFFFFFF) 15748a36d31fSIlya Yanok ofs += 4; 15758a36d31fSIlya Yanok 15768a36d31fSIlya Yanok if (ofs == EMPTY_SCAN_SIZE(part->sector_size)) 15778a36d31fSIlya Yanok continue; 15788a36d31fSIlya Yanok 15798a36d31fSIlya Yanok ofs += sector_ofs; 15808a36d31fSIlya Yanok prevofs = ofs - 1; 1581c5b1940fSMark Tomlinson /* 1582c5b1940fSMark Tomlinson * Set buf_size down to the minimum size required. 1583c5b1940fSMark Tomlinson * This prevents reading in chunks of flash data unnecessarily. 1584c5b1940fSMark Tomlinson */ 1585c5b1940fSMark Tomlinson buf_size = sizeof(union jffs2_node_union); 15868a36d31fSIlya Yanok 15878a36d31fSIlya Yanok scan_more: 15888a36d31fSIlya Yanok while (ofs < sector_ofs + part->sector_size) { 15898a36d31fSIlya Yanok if (ofs == prevofs) { 15908a36d31fSIlya Yanok printf("offset %08x already seen, skip\n", ofs); 15918a36d31fSIlya Yanok ofs += 4; 15928a36d31fSIlya Yanok counter4++; 15938a36d31fSIlya Yanok continue; 1594998eaaecSwdenk } 15958a36d31fSIlya Yanok prevofs = ofs; 15968a36d31fSIlya Yanok if (sector_ofs + part->sector_size < 15978a36d31fSIlya Yanok ofs + sizeof(*node)) 15988a36d31fSIlya Yanok break; 15998a36d31fSIlya Yanok if (buf_ofs + buf_len < ofs + sizeof(*node)) { 16008a36d31fSIlya Yanok buf_len = min_t(uint32_t, buf_size, sector_ofs 16018a36d31fSIlya Yanok + part->sector_size - ofs); 16028a36d31fSIlya Yanok get_fl_mem((u32)part->offset + ofs, buf_len, 16038a36d31fSIlya Yanok buf); 16048a36d31fSIlya Yanok buf_ofs = ofs; 16058a36d31fSIlya Yanok } 16068a36d31fSIlya Yanok 16078a36d31fSIlya Yanok node = (struct jffs2_unknown_node *)&buf[ofs-buf_ofs]; 16088a36d31fSIlya Yanok 16098a36d31fSIlya Yanok if (*(uint32_t *)(&buf[ofs-buf_ofs]) == 0xffffffff) { 16108a36d31fSIlya Yanok uint32_t inbuf_ofs; 161116b9afd2SWolfgang Denk uint32_t scan_end; 16128a36d31fSIlya Yanok 16138a36d31fSIlya Yanok ofs += 4; 16148a36d31fSIlya Yanok scan_end = min_t(uint32_t, EMPTY_SCAN_SIZE( 16158a36d31fSIlya Yanok part->sector_size)/8, 16168a36d31fSIlya Yanok buf_len); 16178a36d31fSIlya Yanok more_empty: 16188a36d31fSIlya Yanok inbuf_ofs = ofs - buf_ofs; 16198a36d31fSIlya Yanok while (inbuf_ofs < scan_end) { 16208a36d31fSIlya Yanok if (*(uint32_t *)(&buf[inbuf_ofs]) != 16218a36d31fSIlya Yanok 0xffffffff) 16228a36d31fSIlya Yanok goto scan_more; 16238a36d31fSIlya Yanok 16248a36d31fSIlya Yanok inbuf_ofs += 4; 16258a36d31fSIlya Yanok ofs += 4; 16268a36d31fSIlya Yanok } 16278a36d31fSIlya Yanok /* Ran off end. */ 162854a88384SMark Tomlinson /* 162954a88384SMark Tomlinson * If this sector had a clean marker at the 163054a88384SMark Tomlinson * beginning, and immediately following this 163154a88384SMark Tomlinson * have been a bunch of FF bytes, treat the 163254a88384SMark Tomlinson * entire sector as empty. 163354a88384SMark Tomlinson */ 163454a88384SMark Tomlinson if (clean_sector) 163554a88384SMark Tomlinson break; 16368a36d31fSIlya Yanok 16378a36d31fSIlya Yanok /* See how much more there is to read in this 16388a36d31fSIlya Yanok * eraseblock... 16398a36d31fSIlya Yanok */ 16408a36d31fSIlya Yanok buf_len = min_t(uint32_t, buf_size, 16418a36d31fSIlya Yanok sector_ofs + 16428a36d31fSIlya Yanok part->sector_size - ofs); 16438a36d31fSIlya Yanok if (!buf_len) { 16448a36d31fSIlya Yanok /* No more to read. Break out of main 16458a36d31fSIlya Yanok * loop without marking this range of 16468a36d31fSIlya Yanok * empty space as dirty (because it's 16478a36d31fSIlya Yanok * not) 16488a36d31fSIlya Yanok */ 16498a36d31fSIlya Yanok break; 16508a36d31fSIlya Yanok } 16518a36d31fSIlya Yanok scan_end = buf_len; 16528a36d31fSIlya Yanok get_fl_mem((u32)part->offset + ofs, buf_len, 16538a36d31fSIlya Yanok buf); 16548a36d31fSIlya Yanok buf_ofs = ofs; 16558a36d31fSIlya Yanok goto more_empty; 16568a36d31fSIlya Yanok } 165754a88384SMark Tomlinson /* 165854a88384SMark Tomlinson * Found something not erased in the sector, so reset 165954a88384SMark Tomlinson * the 'clean_sector' flag. 166054a88384SMark Tomlinson */ 166154a88384SMark Tomlinson clean_sector = 0; 16628a36d31fSIlya Yanok if (node->magic != JFFS2_MAGIC_BITMASK || 16638a36d31fSIlya Yanok !hdr_crc(node)) { 16648a36d31fSIlya Yanok ofs += 4; 16658a36d31fSIlya Yanok counter4++; 16668a36d31fSIlya Yanok continue; 16678a36d31fSIlya Yanok } 16688a36d31fSIlya Yanok if (ofs + node->totlen > 16698a36d31fSIlya Yanok sector_ofs + part->sector_size) { 16708a36d31fSIlya Yanok ofs += 4; 16718a36d31fSIlya Yanok counter4++; 16728a36d31fSIlya Yanok continue; 16738a36d31fSIlya Yanok } 16748a36d31fSIlya Yanok /* if its a fragment add it */ 16758a36d31fSIlya Yanok switch (node->nodetype) { 16768a36d31fSIlya Yanok case JFFS2_NODETYPE_INODE: 16778a36d31fSIlya Yanok if (buf_ofs + buf_len < ofs + sizeof(struct 16788a36d31fSIlya Yanok jffs2_raw_inode)) { 1679c5b1940fSMark Tomlinson buf_len = min_t(uint32_t, 1680c5b1940fSMark Tomlinson sizeof(struct jffs2_raw_inode), 1681c5b1940fSMark Tomlinson sector_ofs + 1682c5b1940fSMark Tomlinson part->sector_size - 1683c5b1940fSMark Tomlinson ofs); 16848a36d31fSIlya Yanok get_fl_mem((u32)part->offset + ofs, 16858a36d31fSIlya Yanok buf_len, buf); 16868a36d31fSIlya Yanok buf_ofs = ofs; 16878a36d31fSIlya Yanok node = (void *)buf; 16888a36d31fSIlya Yanok } 16898a36d31fSIlya Yanok if (!inode_crc((struct jffs2_raw_inode *)node)) 16908a36d31fSIlya Yanok break; 16918a36d31fSIlya Yanok 16928a36d31fSIlya Yanok if (insert_node(&pL->frag, (u32) part->offset + 1693b644006eSIlya Yanok ofs) == NULL) { 1694b644006eSIlya Yanok free(buf); 1695b644006eSIlya Yanok jffs2_free_cache(part); 16968a36d31fSIlya Yanok return 0; 1697b644006eSIlya Yanok } 169870741004SIlya Yanok if (max_totlen < node->totlen) 169970741004SIlya Yanok max_totlen = node->totlen; 17008a36d31fSIlya Yanok break; 17018a36d31fSIlya Yanok case JFFS2_NODETYPE_DIRENT: 17028a36d31fSIlya Yanok if (buf_ofs + buf_len < ofs + sizeof(struct 17038a36d31fSIlya Yanok jffs2_raw_dirent) + 17048a36d31fSIlya Yanok ((struct 17058a36d31fSIlya Yanok jffs2_raw_dirent *) 17068a36d31fSIlya Yanok node)->nsize) { 1707c5b1940fSMark Tomlinson buf_len = min_t(uint32_t, 1708c5b1940fSMark Tomlinson node->totlen, 1709c5b1940fSMark Tomlinson sector_ofs + 1710c5b1940fSMark Tomlinson part->sector_size - 1711c5b1940fSMark Tomlinson ofs); 17128a36d31fSIlya Yanok get_fl_mem((u32)part->offset + ofs, 17138a36d31fSIlya Yanok buf_len, buf); 17148a36d31fSIlya Yanok buf_ofs = ofs; 17158a36d31fSIlya Yanok node = (void *)buf; 17168a36d31fSIlya Yanok } 17178a36d31fSIlya Yanok 17188a36d31fSIlya Yanok if (!dirent_crc((struct jffs2_raw_dirent *) 17198a36d31fSIlya Yanok node) || 17208a36d31fSIlya Yanok !dirent_name_crc( 17218a36d31fSIlya Yanok (struct 17228a36d31fSIlya Yanok jffs2_raw_dirent *) 17238a36d31fSIlya Yanok node)) 17248a36d31fSIlya Yanok break; 1725fc1cfcdbSwdenk if (! (counterN%100)) 17264b9206edSwdenk puts ("\b\b. "); 172706d01dbeSwdenk if (insert_node(&pL->dir, (u32) part->offset + 1728b644006eSIlya Yanok ofs) == NULL) { 1729b644006eSIlya Yanok free(buf); 1730b644006eSIlya Yanok jffs2_free_cache(part); 173106d01dbeSwdenk return 0; 1732b644006eSIlya Yanok } 173370741004SIlya Yanok if (max_totlen < node->totlen) 173470741004SIlya Yanok max_totlen = node->totlen; 173506d01dbeSwdenk counterN++; 17368a36d31fSIlya Yanok break; 17378a36d31fSIlya Yanok case JFFS2_NODETYPE_CLEANMARKER: 173806d01dbeSwdenk if (node->totlen != sizeof(struct jffs2_unknown_node)) 173906d01dbeSwdenk printf("OOPS Cleanmarker has bad size " 1740b64f190bSWolfgang Denk "%d != %zu\n", 1741b64f190bSWolfgang Denk node->totlen, 174206d01dbeSwdenk sizeof(struct jffs2_unknown_node)); 174354a88384SMark Tomlinson if ((node->totlen == 174454a88384SMark Tomlinson sizeof(struct jffs2_unknown_node)) && 174554a88384SMark Tomlinson (ofs == sector_ofs)) { 174654a88384SMark Tomlinson /* 174754a88384SMark Tomlinson * Found a CLEANMARKER at the beginning 174854a88384SMark Tomlinson * of the sector. It's in the correct 174954a88384SMark Tomlinson * place with correct size and CRC. 175054a88384SMark Tomlinson */ 175154a88384SMark Tomlinson clean_sector = 1; 175254a88384SMark Tomlinson } 17538a36d31fSIlya Yanok break; 17548a36d31fSIlya Yanok case JFFS2_NODETYPE_PADDING: 17557205e407Swdenk if (node->totlen < sizeof(struct jffs2_unknown_node)) 17567205e407Swdenk printf("OOPS Padding has bad size " 1757b64f190bSWolfgang Denk "%d < %zu\n", 1758b64f190bSWolfgang Denk node->totlen, 17597205e407Swdenk sizeof(struct jffs2_unknown_node)); 17608a36d31fSIlya Yanok break; 17619b707622SIlya Yanok case JFFS2_NODETYPE_SUMMARY: 17629b707622SIlya Yanok break; 17638a36d31fSIlya Yanok default: 1764b64f190bSWolfgang Denk printf("Unknown node type: %x len %d offset 0x%x\n", 1765b64f190bSWolfgang Denk node->nodetype, 17668a36d31fSIlya Yanok node->totlen, ofs); 176706d01dbeSwdenk } 17688a36d31fSIlya Yanok ofs += ((node->totlen + 3) & ~3); 176906d01dbeSwdenk counterF++; 177006d01dbeSwdenk } 177106d01dbeSwdenk } 177206d01dbeSwdenk 17738a36d31fSIlya Yanok free(buf); 177410d3ac34SMark Tomlinson #if defined(CONFIG_SYS_JFFS2_SORT_FRAGMENTS) 177510d3ac34SMark Tomlinson /* 177610d3ac34SMark Tomlinson * Sort the lists. 177710d3ac34SMark Tomlinson */ 177810d3ac34SMark Tomlinson sort_list(&pL->frag); 177910d3ac34SMark Tomlinson sort_list(&pL->dir); 178010d3ac34SMark Tomlinson #endif 178106d01dbeSwdenk putstr("\b\b done.\r\n"); /* close off the dots */ 178270741004SIlya Yanok 178370741004SIlya Yanok /* We don't care if malloc failed - then each read operation will 178470741004SIlya Yanok * allocate its own buffer as necessary (NAND) or will read directly 178570741004SIlya Yanok * from flash (NOR). 178670741004SIlya Yanok */ 178770741004SIlya Yanok pL->readbuf = malloc(max_totlen); 178870741004SIlya Yanok 178906d01dbeSwdenk /* turn the lcd back on. */ 179006d01dbeSwdenk /* splash(); */ 179106d01dbeSwdenk 179206d01dbeSwdenk #if 0 179306d01dbeSwdenk putLabeledWord("dir entries = ", pL->dir.listCount); 179406d01dbeSwdenk putLabeledWord("frag entries = ", pL->frag.listCount); 179506d01dbeSwdenk putLabeledWord("+4 increments = ", counter4); 179606d01dbeSwdenk putLabeledWord("+file_offset increments = ", counterF); 179706d01dbeSwdenk 179806d01dbeSwdenk #endif 179906d01dbeSwdenk 180006d01dbeSwdenk #ifdef DEBUG_DIRENTS 180106d01dbeSwdenk dump_dirents(pL); 180206d01dbeSwdenk #endif 180306d01dbeSwdenk 180406d01dbeSwdenk #ifdef DEBUG_FRAGMENTS 180506d01dbeSwdenk dump_fragments(pL); 180606d01dbeSwdenk #endif 180706d01dbeSwdenk 1808fe8c2806Swdenk /* give visual feedback that we are done scanning the flash */ 1809fe8c2806Swdenk led_blink(0x0, 0x0, 0x1, 0x1); /* off, forever, on 100ms, off 100ms */ 1810fe8c2806Swdenk return 1; 1811fe8c2806Swdenk } 1812fe8c2806Swdenk 1813fe8c2806Swdenk 1814fe8c2806Swdenk static u32 1815fe8c2806Swdenk jffs2_1pass_fill_info(struct b_lists * pL, struct b_jffs2_info * piL) 1816fe8c2806Swdenk { 1817fe8c2806Swdenk struct b_node *b; 1818998eaaecSwdenk struct jffs2_raw_inode ojNode; 1819fe8c2806Swdenk struct jffs2_raw_inode *jNode; 1820fe8c2806Swdenk int i; 1821fe8c2806Swdenk 1822fe8c2806Swdenk for (i = 0; i < JFFS2_NUM_COMPR; i++) { 1823fe8c2806Swdenk piL->compr_info[i].num_frags = 0; 1824fe8c2806Swdenk piL->compr_info[i].compr_sum = 0; 1825fe8c2806Swdenk piL->compr_info[i].decompr_sum = 0; 1826fe8c2806Swdenk } 1827fe8c2806Swdenk 182806d01dbeSwdenk b = pL->frag.listHead; 1829fe8c2806Swdenk while (b) { 1830998eaaecSwdenk jNode = (struct jffs2_raw_inode *) get_fl_mem(b->offset, 1831998eaaecSwdenk sizeof(ojNode), &ojNode); 1832fe8c2806Swdenk if (jNode->compr < JFFS2_NUM_COMPR) { 1833fe8c2806Swdenk piL->compr_info[jNode->compr].num_frags++; 1834fe8c2806Swdenk piL->compr_info[jNode->compr].compr_sum += jNode->csize; 1835fe8c2806Swdenk piL->compr_info[jNode->compr].decompr_sum += jNode->dsize; 1836fe8c2806Swdenk } 1837fe8c2806Swdenk b = b->next; 1838fe8c2806Swdenk } 1839fe8c2806Swdenk return 0; 1840fe8c2806Swdenk } 1841fe8c2806Swdenk 1842fe8c2806Swdenk 1843fe8c2806Swdenk static struct b_lists * 1844fe8c2806Swdenk jffs2_get_list(struct part_info * part, const char *who) 1845fe8c2806Swdenk { 1846700a0c64SWolfgang Denk /* copy requested part_info struct pointer to global location */ 1847700a0c64SWolfgang Denk current_part = part; 1848700a0c64SWolfgang Denk 1849fe8c2806Swdenk if (jffs2_1pass_rescan_needed(part)) { 1850fe8c2806Swdenk if (!jffs2_1pass_build_lists(part)) { 1851fe8c2806Swdenk printf("%s: Failed to scan JFFSv2 file structure\n", who); 1852fe8c2806Swdenk return NULL; 1853fe8c2806Swdenk } 1854fe8c2806Swdenk } 1855fe8c2806Swdenk return (struct b_lists *)part->jffs2_priv; 1856fe8c2806Swdenk } 1857fe8c2806Swdenk 1858fe8c2806Swdenk 1859fe8c2806Swdenk /* Print directory / file contents */ 1860fe8c2806Swdenk u32 1861fe8c2806Swdenk jffs2_1pass_ls(struct part_info * part, const char *fname) 1862fe8c2806Swdenk { 1863fe8c2806Swdenk struct b_lists *pl; 186487b8bd5aSWolfgang Denk long ret = 1; 1865fe8c2806Swdenk u32 inode; 1866fe8c2806Swdenk 1867fe8c2806Swdenk if (! (pl = jffs2_get_list(part, "ls"))) 1868fe8c2806Swdenk return 0; 1869fe8c2806Swdenk 1870fe8c2806Swdenk if (! (inode = jffs2_1pass_search_list_inodes(pl, fname, 1))) { 1871fe8c2806Swdenk putstr("ls: Failed to scan jffs2 file structure\r\n"); 1872fe8c2806Swdenk return 0; 1873fe8c2806Swdenk } 1874fc1cfcdbSwdenk 1875fc1cfcdbSwdenk 1876fe8c2806Swdenk #if 0 1877fe8c2806Swdenk putLabeledWord("found file at inode = ", inode); 1878fe8c2806Swdenk putLabeledWord("read_inode returns = ", ret); 1879fe8c2806Swdenk #endif 1880fc1cfcdbSwdenk 1881fc1cfcdbSwdenk return ret; 1882fe8c2806Swdenk } 1883fe8c2806Swdenk 1884fe8c2806Swdenk 1885fe8c2806Swdenk /* Load a file from flash into memory. fname can be a full path */ 1886fe8c2806Swdenk u32 1887fe8c2806Swdenk jffs2_1pass_load(char *dest, struct part_info * part, const char *fname) 1888fe8c2806Swdenk { 1889fe8c2806Swdenk 1890fe8c2806Swdenk struct b_lists *pl; 189187b8bd5aSWolfgang Denk long ret = 1; 1892fe8c2806Swdenk u32 inode; 1893fe8c2806Swdenk 1894fe8c2806Swdenk if (! (pl = jffs2_get_list(part, "load"))) 1895fe8c2806Swdenk return 0; 1896fe8c2806Swdenk 1897fe8c2806Swdenk if (! (inode = jffs2_1pass_search_inode(pl, fname, 1))) { 1898fe8c2806Swdenk putstr("load: Failed to find inode\r\n"); 1899fe8c2806Swdenk return 0; 1900fe8c2806Swdenk } 1901fe8c2806Swdenk 1902fe8c2806Swdenk /* Resolve symlinks */ 1903fe8c2806Swdenk if (! (inode = jffs2_1pass_resolve_inode(pl, inode))) { 1904fe8c2806Swdenk putstr("load: Failed to resolve inode structure\r\n"); 1905fe8c2806Swdenk return 0; 1906fe8c2806Swdenk } 1907fe8c2806Swdenk 1908fe8c2806Swdenk if ((ret = jffs2_1pass_read_inode(pl, inode, dest)) < 0) { 1909fe8c2806Swdenk putstr("load: Failed to read inode\r\n"); 1910fe8c2806Swdenk return 0; 1911fe8c2806Swdenk } 1912fe8c2806Swdenk 1913fe8c2806Swdenk DEBUGF ("load: loaded '%s' to 0x%lx (%ld bytes)\n", fname, 1914fe8c2806Swdenk (unsigned long) dest, ret); 1915fe8c2806Swdenk return ret; 1916fe8c2806Swdenk } 1917fe8c2806Swdenk 1918fe8c2806Swdenk /* Return information about the fs on this partition */ 1919fe8c2806Swdenk u32 1920fe8c2806Swdenk jffs2_1pass_info(struct part_info * part) 1921fe8c2806Swdenk { 1922fe8c2806Swdenk struct b_jffs2_info info; 1923fe8c2806Swdenk struct b_lists *pl; 1924fe8c2806Swdenk int i; 1925fe8c2806Swdenk 1926fe8c2806Swdenk if (! (pl = jffs2_get_list(part, "info"))) 1927fe8c2806Swdenk return 0; 1928fe8c2806Swdenk 1929fe8c2806Swdenk jffs2_1pass_fill_info(pl, &info); 1930fe8c2806Swdenk for (i = 0; i < JFFS2_NUM_COMPR; i++) { 19314b9206edSwdenk printf ("Compression: %s\n" 19324b9206edSwdenk "\tfrag count: %d\n" 19334b9206edSwdenk "\tcompressed sum: %d\n" 19344b9206edSwdenk "\tuncompressed sum: %d\n", 19354b9206edSwdenk compr_names[i], 19364b9206edSwdenk info.compr_info[i].num_frags, 19374b9206edSwdenk info.compr_info[i].compr_sum, 19384b9206edSwdenk info.compr_info[i].decompr_sum); 1939fe8c2806Swdenk } 1940fe8c2806Swdenk return 1; 1941fe8c2806Swdenk } 1942