linux/fs/ubifs/recovery.c
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   1/*
   2 * This file is part of UBIFS.
   3 *
   4 * Copyright (C) 2006-2008 Nokia Corporation
   5 *
   6 * This program is free software; you can redistribute it and/or modify it
   7 * under the terms of the GNU General Public License version 2 as published by
   8 * the Free Software Foundation.
   9 *
  10 * This program is distributed in the hope that it will be useful, but WITHOUT
  11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13 * more details.
  14 *
  15 * You should have received a copy of the GNU General Public License along with
  16 * this program; if not, write to the Free Software Foundation, Inc., 51
  17 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  18 *
  19 * Authors: Adrian Hunter
  20 *          Artem Bityutskiy (Битюцкий Артём)
  21 */
  22
  23/*
  24 * This file implements functions needed to recover from unclean un-mounts.
  25 * When UBIFS is mounted, it checks a flag on the master node to determine if
  26 * an un-mount was completed successfully. If not, the process of mounting
  27 * incorporates additional checking and fixing of on-flash data structures.
  28 * UBIFS always cleans away all remnants of an unclean un-mount, so that
  29 * errors do not accumulate. However UBIFS defers recovery if it is mounted
  30 * read-only, and the flash is not modified in that case.
  31 *
  32 * The general UBIFS approach to the recovery is that it recovers from
  33 * corruptions which could be caused by power cuts, but it refuses to recover
  34 * from corruption caused by other reasons. And UBIFS tries to distinguish
  35 * between these 2 reasons of corruptions and silently recover in the former
  36 * case and loudly complain in the latter case.
  37 *
  38 * UBIFS writes only to erased LEBs, so it writes only to the flash space
  39 * containing only 0xFFs. UBIFS also always writes strictly from the beginning
  40 * of the LEB to the end. And UBIFS assumes that the underlying flash media
  41 * writes in @c->max_write_size bytes at a time.
  42 *
  43 * Hence, if UBIFS finds a corrupted node at offset X, it expects only the min.
  44 * I/O unit corresponding to offset X to contain corrupted data, all the
  45 * following min. I/O units have to contain empty space (all 0xFFs). If this is
  46 * not true, the corruption cannot be the result of a power cut, and UBIFS
  47 * refuses to mount.
  48 */
  49
  50#include <linux/crc32.h>
  51#include <linux/slab.h>
  52#include "ubifs.h"
  53
  54/**
  55 * is_empty - determine whether a buffer is empty (contains all 0xff).
  56 * @buf: buffer to clean
  57 * @len: length of buffer
  58 *
  59 * This function returns %1 if the buffer is empty (contains all 0xff) otherwise
  60 * %0 is returned.
  61 */
  62static int is_empty(void *buf, int len)
  63{
  64        uint8_t *p = buf;
  65        int i;
  66
  67        for (i = 0; i < len; i++)
  68                if (*p++ != 0xff)
  69                        return 0;
  70        return 1;
  71}
  72
  73/**
  74 * first_non_ff - find offset of the first non-0xff byte.
  75 * @buf: buffer to search in
  76 * @len: length of buffer
  77 *
  78 * This function returns offset of the first non-0xff byte in @buf or %-1 if
  79 * the buffer contains only 0xff bytes.
  80 */
  81static int first_non_ff(void *buf, int len)
  82{
  83        uint8_t *p = buf;
  84        int i;
  85
  86        for (i = 0; i < len; i++)
  87                if (*p++ != 0xff)
  88                        return i;
  89        return -1;
  90}
  91
  92/**
  93 * get_master_node - get the last valid master node allowing for corruption.
  94 * @c: UBIFS file-system description object
  95 * @lnum: LEB number
  96 * @pbuf: buffer containing the LEB read, is returned here
  97 * @mst: master node, if found, is returned here
  98 * @cor: corruption, if found, is returned here
  99 *
 100 * This function allocates a buffer, reads the LEB into it, and finds and
 101 * returns the last valid master node allowing for one area of corruption.
 102 * The corrupt area, if there is one, must be consistent with the assumption
 103 * that it is the result of an unclean unmount while the master node was being
 104 * written. Under those circumstances, it is valid to use the previously written
 105 * master node.
 106 *
 107 * This function returns %0 on success and a negative error code on failure.
 108 */
 109static int get_master_node(const struct ubifs_info *c, int lnum, void **pbuf,
 110                           struct ubifs_mst_node **mst, void **cor)
 111{
 112        const int sz = c->mst_node_alsz;
 113        int err, offs, len;
 114        void *sbuf, *buf;
 115
 116        sbuf = vmalloc(c->leb_size);
 117        if (!sbuf)
 118                return -ENOMEM;
 119
 120        err = ubifs_leb_read(c, lnum, sbuf, 0, c->leb_size, 0);
 121        if (err && err != -EBADMSG)
 122                goto out_free;
 123
 124        /* Find the first position that is definitely not a node */
 125        offs = 0;
 126        buf = sbuf;
 127        len = c->leb_size;
 128        while (offs + UBIFS_MST_NODE_SZ <= c->leb_size) {
 129                struct ubifs_ch *ch = buf;
 130
 131                if (le32_to_cpu(ch->magic) != UBIFS_NODE_MAGIC)
 132                        break;
 133                offs += sz;
 134                buf  += sz;
 135                len  -= sz;
 136        }
 137        /* See if there was a valid master node before that */
 138        if (offs) {
 139                int ret;
 140
 141                offs -= sz;
 142                buf  -= sz;
 143                len  += sz;
 144                ret = ubifs_scan_a_node(c, buf, len, lnum, offs, 1);
 145                if (ret != SCANNED_A_NODE && offs) {
 146                        /* Could have been corruption so check one place back */
 147                        offs -= sz;
 148                        buf  -= sz;
 149                        len  += sz;
 150                        ret = ubifs_scan_a_node(c, buf, len, lnum, offs, 1);
 151                        if (ret != SCANNED_A_NODE)
 152                                /*
 153                                 * We accept only one area of corruption because
 154                                 * we are assuming that it was caused while
 155                                 * trying to write a master node.
 156                                 */
 157                                goto out_err;
 158                }
 159                if (ret == SCANNED_A_NODE) {
 160                        struct ubifs_ch *ch = buf;
 161
 162                        if (ch->node_type != UBIFS_MST_NODE)
 163                                goto out_err;
 164                        dbg_rcvry("found a master node at %d:%d", lnum, offs);
 165                        *mst = buf;
 166                        offs += sz;
 167                        buf  += sz;
 168                        len  -= sz;
 169                }
 170        }
 171        /* Check for corruption */
 172        if (offs < c->leb_size) {
 173                if (!is_empty(buf, min_t(int, len, sz))) {
 174                        *cor = buf;
 175                        dbg_rcvry("found corruption at %d:%d", lnum, offs);
 176                }
 177                offs += sz;
 178                buf  += sz;
 179                len  -= sz;
 180        }
 181        /* Check remaining empty space */
 182        if (offs < c->leb_size)
 183                if (!is_empty(buf, len))
 184                        goto out_err;
 185        *pbuf = sbuf;
 186        return 0;
 187
 188out_err:
 189        err = -EINVAL;
 190out_free:
 191        vfree(sbuf);
 192        *mst = NULL;
 193        *cor = NULL;
 194        return err;
 195}
 196
 197/**
 198 * write_rcvrd_mst_node - write recovered master node.
 199 * @c: UBIFS file-system description object
 200 * @mst: master node
 201 *
 202 * This function returns %0 on success and a negative error code on failure.
 203 */
 204static int write_rcvrd_mst_node(struct ubifs_info *c,
 205                                struct ubifs_mst_node *mst)
 206{
 207        int err = 0, lnum = UBIFS_MST_LNUM, sz = c->mst_node_alsz;
 208        __le32 save_flags;
 209
 210        dbg_rcvry("recovery");
 211
 212        save_flags = mst->flags;
 213        mst->flags |= cpu_to_le32(UBIFS_MST_RCVRY);
 214
 215        ubifs_prepare_node(c, mst, UBIFS_MST_NODE_SZ, 1);
 216        err = ubifs_leb_change(c, lnum, mst, sz);
 217        if (err)
 218                goto out;
 219        err = ubifs_leb_change(c, lnum + 1, mst, sz);
 220        if (err)
 221                goto out;
 222out:
 223        mst->flags = save_flags;
 224        return err;
 225}
 226
 227/**
 228 * ubifs_recover_master_node - recover the master node.
 229 * @c: UBIFS file-system description object
 230 *
 231 * This function recovers the master node from corruption that may occur due to
 232 * an unclean unmount.
 233 *
 234 * This function returns %0 on success and a negative error code on failure.
 235 */
 236int ubifs_recover_master_node(struct ubifs_info *c)
 237{
 238        void *buf1 = NULL, *buf2 = NULL, *cor1 = NULL, *cor2 = NULL;
 239        struct ubifs_mst_node *mst1 = NULL, *mst2 = NULL, *mst;
 240        const int sz = c->mst_node_alsz;
 241        int err, offs1, offs2;
 242
 243        dbg_rcvry("recovery");
 244
 245        err = get_master_node(c, UBIFS_MST_LNUM, &buf1, &mst1, &cor1);
 246        if (err)
 247                goto out_free;
 248
 249        err = get_master_node(c, UBIFS_MST_LNUM + 1, &buf2, &mst2, &cor2);
 250        if (err)
 251                goto out_free;
 252
 253        if (mst1) {
 254                offs1 = (void *)mst1 - buf1;
 255                if ((le32_to_cpu(mst1->flags) & UBIFS_MST_RCVRY) &&
 256                    (offs1 == 0 && !cor1)) {
 257                        /*
 258                         * mst1 was written by recovery at offset 0 with no
 259                         * corruption.
 260                         */
 261                        dbg_rcvry("recovery recovery");
 262                        mst = mst1;
 263                } else if (mst2) {
 264                        offs2 = (void *)mst2 - buf2;
 265                        if (offs1 == offs2) {
 266                                /* Same offset, so must be the same */
 267                                if (memcmp((void *)mst1 + UBIFS_CH_SZ,
 268                                           (void *)mst2 + UBIFS_CH_SZ,
 269                                           UBIFS_MST_NODE_SZ - UBIFS_CH_SZ))
 270                                        goto out_err;
 271                                mst = mst1;
 272                        } else if (offs2 + sz == offs1) {
 273                                /* 1st LEB was written, 2nd was not */
 274                                if (cor1)
 275                                        goto out_err;
 276                                mst = mst1;
 277                        } else if (offs1 == 0 &&
 278                                   c->leb_size - offs2 - sz < sz) {
 279                                /* 1st LEB was unmapped and written, 2nd not */
 280                                if (cor1)
 281                                        goto out_err;
 282                                mst = mst1;
 283                        } else
 284                                goto out_err;
 285                } else {
 286                        /*
 287                         * 2nd LEB was unmapped and about to be written, so
 288                         * there must be only one master node in the first LEB
 289                         * and no corruption.
 290                         */
 291                        if (offs1 != 0 || cor1)
 292                                goto out_err;
 293                        mst = mst1;
 294                }
 295        } else {
 296                if (!mst2)
 297                        goto out_err;
 298                /*
 299                 * 1st LEB was unmapped and about to be written, so there must
 300                 * be no room left in 2nd LEB.
 301                 */
 302                offs2 = (void *)mst2 - buf2;
 303                if (offs2 + sz + sz <= c->leb_size)
 304                        goto out_err;
 305                mst = mst2;
 306        }
 307
 308        ubifs_msg("recovered master node from LEB %d",
 309                  (mst == mst1 ? UBIFS_MST_LNUM : UBIFS_MST_LNUM + 1));
 310
 311        memcpy(c->mst_node, mst, UBIFS_MST_NODE_SZ);
 312
 313        if (c->ro_mount) {
 314                /* Read-only mode. Keep a copy for switching to rw mode */
 315                c->rcvrd_mst_node = kmalloc(sz, GFP_KERNEL);
 316                if (!c->rcvrd_mst_node) {
 317                        err = -ENOMEM;
 318                        goto out_free;
 319                }
 320                memcpy(c->rcvrd_mst_node, c->mst_node, UBIFS_MST_NODE_SZ);
 321
 322                /*
 323                 * We had to recover the master node, which means there was an
 324                 * unclean reboot. However, it is possible that the master node
 325                 * is clean at this point, i.e., %UBIFS_MST_DIRTY is not set.
 326                 * E.g., consider the following chain of events:
 327                 *
 328                 * 1. UBIFS was cleanly unmounted, so the master node is clean
 329                 * 2. UBIFS is being mounted R/W and starts changing the master
 330                 *    node in the first (%UBIFS_MST_LNUM). A power cut happens,
 331                 *    so this LEB ends up with some amount of garbage at the
 332                 *    end.
 333                 * 3. UBIFS is being mounted R/O. We reach this place and
 334                 *    recover the master node from the second LEB
 335                 *    (%UBIFS_MST_LNUM + 1). But we cannot update the media
 336                 *    because we are being mounted R/O. We have to defer the
 337                 *    operation.
 338                 * 4. However, this master node (@c->mst_node) is marked as
 339                 *    clean (since the step 1). And if we just return, the
 340                 *    mount code will be confused and won't recover the master
 341                 *    node when it is re-mounter R/W later.
 342                 *
 343                 *    Thus, to force the recovery by marking the master node as
 344                 *    dirty.
 345                 */
 346                c->mst_node->flags |= cpu_to_le32(UBIFS_MST_DIRTY);
 347        } else {
 348                /* Write the recovered master node */
 349                c->max_sqnum = le64_to_cpu(mst->ch.sqnum) - 1;
 350                err = write_rcvrd_mst_node(c, c->mst_node);
 351                if (err)
 352                        goto out_free;
 353        }
 354
 355        vfree(buf2);
 356        vfree(buf1);
 357
 358        return 0;
 359
 360out_err:
 361        err = -EINVAL;
 362out_free:
 363        ubifs_err("failed to recover master node");
 364        if (mst1) {
 365                ubifs_err("dumping first master node");
 366                ubifs_dump_node(c, mst1);
 367        }
 368        if (mst2) {
 369                ubifs_err("dumping second master node");
 370                ubifs_dump_node(c, mst2);
 371        }
 372        vfree(buf2);
 373        vfree(buf1);
 374        return err;
 375}
 376
 377/**
 378 * ubifs_write_rcvrd_mst_node - write the recovered master node.
 379 * @c: UBIFS file-system description object
 380 *
 381 * This function writes the master node that was recovered during mounting in
 382 * read-only mode and must now be written because we are remounting rw.
 383 *
 384 * This function returns %0 on success and a negative error code on failure.
 385 */
 386int ubifs_write_rcvrd_mst_node(struct ubifs_info *c)
 387{
 388        int err;
 389
 390        if (!c->rcvrd_mst_node)
 391                return 0;
 392        c->rcvrd_mst_node->flags |= cpu_to_le32(UBIFS_MST_DIRTY);
 393        c->mst_node->flags |= cpu_to_le32(UBIFS_MST_DIRTY);
 394        err = write_rcvrd_mst_node(c, c->rcvrd_mst_node);
 395        if (err)
 396                return err;
 397        kfree(c->rcvrd_mst_node);
 398        c->rcvrd_mst_node = NULL;
 399        return 0;
 400}
 401
 402/**
 403 * is_last_write - determine if an offset was in the last write to a LEB.
 404 * @c: UBIFS file-system description object
 405 * @buf: buffer to check
 406 * @offs: offset to check
 407 *
 408 * This function returns %1 if @offs was in the last write to the LEB whose data
 409 * is in @buf, otherwise %0 is returned. The determination is made by checking
 410 * for subsequent empty space starting from the next @c->max_write_size
 411 * boundary.
 412 */
 413static int is_last_write(const struct ubifs_info *c, void *buf, int offs)
 414{
 415        int empty_offs, check_len;
 416        uint8_t *p;
 417
 418        /*
 419         * Round up to the next @c->max_write_size boundary i.e. @offs is in
 420         * the last wbuf written. After that should be empty space.
 421         */
 422        empty_offs = ALIGN(offs + 1, c->max_write_size);
 423        check_len = c->leb_size - empty_offs;
 424        p = buf + empty_offs - offs;
 425        return is_empty(p, check_len);
 426}
 427
 428/**
 429 * clean_buf - clean the data from an LEB sitting in a buffer.
 430 * @c: UBIFS file-system description object
 431 * @buf: buffer to clean
 432 * @lnum: LEB number to clean
 433 * @offs: offset from which to clean
 434 * @len: length of buffer
 435 *
 436 * This function pads up to the next min_io_size boundary (if there is one) and
 437 * sets empty space to all 0xff. @buf, @offs and @len are updated to the next
 438 * @c->min_io_size boundary.
 439 */
 440static void clean_buf(const struct ubifs_info *c, void **buf, int lnum,
 441                      int *offs, int *len)
 442{
 443        int empty_offs, pad_len;
 444
 445        lnum = lnum;
 446        dbg_rcvry("cleaning corruption at %d:%d", lnum, *offs);
 447
 448        ubifs_assert(!(*offs & 7));
 449        empty_offs = ALIGN(*offs, c->min_io_size);
 450        pad_len = empty_offs - *offs;
 451        ubifs_pad(c, *buf, pad_len);
 452        *offs += pad_len;
 453        *buf += pad_len;
 454        *len -= pad_len;
 455        memset(*buf, 0xff, c->leb_size - empty_offs);
 456}
 457
 458/**
 459 * no_more_nodes - determine if there are no more nodes in a buffer.
 460 * @c: UBIFS file-system description object
 461 * @buf: buffer to check
 462 * @len: length of buffer
 463 * @lnum: LEB number of the LEB from which @buf was read
 464 * @offs: offset from which @buf was read
 465 *
 466 * This function ensures that the corrupted node at @offs is the last thing
 467 * written to a LEB. This function returns %1 if more data is not found and
 468 * %0 if more data is found.
 469 */
 470static int no_more_nodes(const struct ubifs_info *c, void *buf, int len,
 471                        int lnum, int offs)
 472{
 473        struct ubifs_ch *ch = buf;
 474        int skip, dlen = le32_to_cpu(ch->len);
 475
 476        /* Check for empty space after the corrupt node's common header */
 477        skip = ALIGN(offs + UBIFS_CH_SZ, c->max_write_size) - offs;
 478        if (is_empty(buf + skip, len - skip))
 479                return 1;
 480        /*
 481         * The area after the common header size is not empty, so the common
 482         * header must be intact. Check it.
 483         */
 484        if (ubifs_check_node(c, buf, lnum, offs, 1, 0) != -EUCLEAN) {
 485                dbg_rcvry("unexpected bad common header at %d:%d", lnum, offs);
 486                return 0;
 487        }
 488        /* Now we know the corrupt node's length we can skip over it */
 489        skip = ALIGN(offs + dlen, c->max_write_size) - offs;
 490        /* After which there should be empty space */
 491        if (is_empty(buf + skip, len - skip))
 492                return 1;
 493        dbg_rcvry("unexpected data at %d:%d", lnum, offs + skip);
 494        return 0;
 495}
 496
 497/**
 498 * fix_unclean_leb - fix an unclean LEB.
 499 * @c: UBIFS file-system description object
 500 * @sleb: scanned LEB information
 501 * @start: offset where scan started
 502 */
 503static int fix_unclean_leb(struct ubifs_info *c, struct ubifs_scan_leb *sleb,
 504                           int start)
 505{
 506        int lnum = sleb->lnum, endpt = start;
 507
 508        /* Get the end offset of the last node we are keeping */
 509        if (!list_empty(&sleb->nodes)) {
 510                struct ubifs_scan_node *snod;
 511
 512                snod = list_entry(sleb->nodes.prev,
 513                                  struct ubifs_scan_node, list);
 514                endpt = snod->offs + snod->len;
 515        }
 516
 517        if (c->ro_mount && !c->remounting_rw) {
 518                /* Add to recovery list */
 519                struct ubifs_unclean_leb *ucleb;
 520
 521                dbg_rcvry("need to fix LEB %d start %d endpt %d",
 522                          lnum, start, sleb->endpt);
 523                ucleb = kzalloc(sizeof(struct ubifs_unclean_leb), GFP_NOFS);
 524                if (!ucleb)
 525                        return -ENOMEM;
 526                ucleb->lnum = lnum;
 527                ucleb->endpt = endpt;
 528                list_add_tail(&ucleb->list, &c->unclean_leb_list);
 529        } else {
 530                /* Write the fixed LEB back to flash */
 531                int err;
 532
 533                dbg_rcvry("fixing LEB %d start %d endpt %d",
 534                          lnum, start, sleb->endpt);
 535                if (endpt == 0) {
 536                        err = ubifs_leb_unmap(c, lnum);
 537                        if (err)
 538                                return err;
 539                } else {
 540                        int len = ALIGN(endpt, c->min_io_size);
 541
 542                        if (start) {
 543                                err = ubifs_leb_read(c, lnum, sleb->buf, 0,
 544                                                     start, 1);
 545                                if (err)
 546                                        return err;
 547                        }
 548                        /* Pad to min_io_size cleb" class="sref">ucleb)
/* Pad to min_io_size cleb" clas/recovery.c#L546" id="L546">( 543                        ad_len" c5ass="sref">pad_len =5 = ALIGNempty_offs - *c-> 545                        bifs_pad"5class="sref">ubifs_pad( 542                        offs" cla5s="sref">offs += empty_offs - * 536                        buf" clas5="sref">buf += ubifs_scan_node>>>>>> class="sref">len,
lnum, endptlen -)
 455        len -=  445        memset(*err)
buf,  545                        b         7" id="L457" class="line5 name55 class="sref">err;
 548                        *
5a href="fs/ubifs/recover5.c#L455e cleb" class="sref">ucleb" class="sref">ubifs_leb_read(c);
clnum, sleb->buf, 0,
len -)
 545                        b         546                         @c: UBIF5 file-system description5objec56a> =  547                         @buf: bu5fer to check
 548                         @len: le5gth of buffer
 548                         uf" clas5B number of the LEB from5which56_node" class=e="L495"> 495}
 476         498 5 written 5o a LEB. This function r5turns5%1 if more data is not foundropifs_ingroup/ubirop09" id="L5group/of class="L499"> 499 5 %0 i5 more data is found.
 501 */
5a href="fs/ubifs/recover5.c#L450" id="L470" class="line" namery.c#L465" id="of iroppL467" isubifs/recove lass"L501"> 501 *e=no_more5nodes" class="sref">no_m5re_no57href="fs/ubifs/recovery.c#L50"L501"> 501 *e@buf: bu5f="+code=lnum" class="sr5f">ln57c()c#L48.c#L491iropass="line""L501"> 501 *e@len: le53" id="L473" class="line5 name57/ubifs/recovery.c#L463" id="L4group/of class#L509" i501" class=="L499"> 499 5+code=ubi5s_ch" class="sref">ubifs5ch
skip, sleb,
en" class="sref">len)
 506        int /* 5heck for empty space aft5r the5corrupt node&#c#Lle"+code=sleb" class="sref">sleb->nodes)) {
 510                struct skip = snod;
 511
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5"fs/ubifs/recovery.c#L485" id=5L480"  511
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 514                
ulass="sref">ro_mounta href="fs/ubifs/recovery.c#L475" id="L475group_typlist);
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 546                        de=ubifs_5heck_node" class="sref">5bifs_58e=start" class="sref">start 514                dbg5rcvry58476"> 476                endpt = star/a> + snod-> 514                lass="sref">len)
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5="sref">skip = sldef">ucleb->nodes;
 514                /* 5fter which there should 5e emp59to flash */
nodes;
 514                is_empty5/a>(<59a>("need ts.prev,
c->,
ecover=3"> 493        , dbg_rcvry( 548                        be=ubifs_5s/recovery.c#L495" id="L595" c59445"> 445         498 5ery.c#L495" id="L497" class="line"5name=59node at @offs is the last thin ropifs_in7" idubirop09" id="L57" i="L499"> 499 5*
5a href="fs/ubifs/recover5.c#L458" id="L498" class="line" na69"" id="L501" class="line" name="L501"> 501 * fix_uncl5an_leb - fix an unclean 5EB.
 501 * @c: UBIF5 file-system description5objec5
 501 6 @sleb: s6anned LEB information
<6 href="fs/ubifs/recovery.c#L50"L501"> 501 6 1sleb: s6a" class="sref">is_empty6/span6
c()c#L48.c#L491iropass="line""L501"> 501 6/
6a href="fs/ubifs/recover6.c#L563" id="L503" class="line" name67" idL509" i501" class=="L499"> 499 6e=fix_unc6ean_leb" class="sref">fi6_uncl60buf was read
list);
l_unclea href="+code=sleb" class="sref">sleb,
en" class="sref">len)
 506        int lnum = <6 href6"+code=sleb" c *snod;
 511
 508        /* 6et the end offset of the6last 60href="+code=buf" code=sleb" class="sref">sleb->nodes)) {
 510                struct 6ode=list_6mpty" class="sref">list_6mpty<60in_io_size cleb" clasleb" class="sre1" class="line" name="L511"e=sleb" class="sref">sleb->nodes.prev,
>, list);
ubifs_scan_nodeine" name="L548" 514                 512                snod6= ldLEB %d start %d endpt %d",
        ubifs_scan_ #L511" id="L511a>, endpt = star/a> + snod-> 514                endpt = <6 href="+code=snod" clalass="sref">len)
offs + snod-> 514                err)
sldef">ucleb->nodes;
 514                nodes;
 514                c-> 5018lff="fs/ubifs/recovegroup7s="line" name="L497"> 497 514 6st);
l_uncle +   /recove lae=lnum" 6lass="sref">lnum = <6
5a href=464nod = "unexpected da14 class="sref">nodes.snod4 href="fs/ubifs/recover5.c#L458" i1"> 511
  ery.c#L> 511
 500 * @sleb: scanned LEB infor6sref">ucl6b)
 * @sleb: scanned LEB infor6s16" cla6s="sref">ENOMEM;
 466 * @sleb: scanned LEB infor6s="line"6n-> 462" c-is rd2 * @c: UBIF5 file-system de6>ucleb 531elongspan (a>   -1s="linec> 53doe"L482="comment"> * @c: UBIF5 file-system de6>opifs_infist_add_tail(& * @c: UBIF5 file-system de6>64nod" class="line" name="L536"> 5362ecovegroupL4:67"n-zeroulaswho="comment"> * @c: UBIF5 file-system de6 fixed LE6 back to flash */6 * @c: UBIF5 file-system de6  465 attnodeingcovele-systL> 511
 533     6     63ame67" idL509" i501" class=="LRlass="line" 0a> 49success,line" -       s="ln cuns/recovablL489" cla68" is> 511
63f="fs/ubifs/recovery.c#L464" i clas,aand1a negative77rror 521"a> 49failurss="comment"> 5*
5a href="fs/ubif6ss="sref"6lnum, endp6 == 0) {
sleb,
sleb,
ubifs_scan_leb * = ubifs_lebbbbbbbbbbbbbbbbbbs="line" name="L472"> 472{
len -)
s1" class="line" name="L471">joffsef">len -)
joffs          6very.c#L566" id="L506" claass="sref6>err)
err;
reremounting_rw" cle" class=0 href="fs/ubifs/re547                 ="fs/ubifs/recovery.c#L492" id="L492" classhref="+code=snod"ubifs/recovery.c#L541" id="L541" class="l 541
 472{
 545             shref="+code=snod""> 472{
 545    %0 uni4    540  "line" name="L471">4group/ode"!c#L474" id="L47esleb->len -)
joffs        -1s? 0 :ref="+code=snod"ubifs/recovery.c#L541" id="L541" class="ljoffs472{
len -)
joffs    ]line" name="L5134group/ode"!c#L474" id="L47esleblen = sleb,
en" class="sref">len)a href6ifs/recov6ry.c#L516" id="La 542     6     64uot;need tslnum, len -)
s1" clasf="fs/ubifs/recovec> 514                start) {
err = ,
offs + skip);
len -)
joffs    ef="fs/ubifs/reco4group/ode"!c#L474" id="L47esleb<c-&   st64ef="+code=5very.c#L456" id="L496" cl6=err" cla6s="sref">err)
en" class="sref">len)c);
sleb->buf, 0,
 472{
len -)
s1" clasc-& ="line"6ne=err" class="sref">err<6a>;
<6 href="fs/ubif="fs/ubifs/recoveryIS_ERRef">len -)
IS_ERRprev,
 548         ss="line" name="L547">">en" class="sref">len)a href6ifs/recov6ry.c#L516" id="Lade=err" 6io_size cleb" class="sre6">ucl6b) href6ifs/recov6ry.c#L516" id="La.c#L540"6d to min_io_size cleb" c6as/re64N( 545    " id="in_e54ub6en =56a hr55a> = slef="+code=prev"veryry.c#L528" id="L528" class=   struct 6ode=list_6mpty" class="srefs_pad 542     6     65uot;need to fix LEB %d start %d L504recovery.c#L5047;d L504="fs/uiropps/red="L57" id="L , buf, 0,
 472{
 445     6  snod->err)
err<6a>;
<6 href="fs/ub> 548 481"> 481         * The area after t6s="line"56ame=55548" class="line" 6ame="65a69"" id="L501" class="line"""""""""""""""""* S 465 * @c: UBIF5 file-system de6/recover56c#L455e cleb" class="sre6">ucl65veryy.c#L465" id="of iroppL4""""""""""""""""* le-syst="comment"> * @c: UBIF5 file-system de6/.c#L540"6are 55in_io_size cleb" c6as/re65ecovegroupL4:67"n-zeroulaswh""""""""""""""""*             6   int  = reremounting_rw" cle" class=>sleb,
lnum, offs, 1, 0) != -EUCLEAN) {

 568                 ="fs/ubifs/recoveryreremounting_rw" cle" classs=>sleb,
,  ,aand1a82 a paddingcfs" c*             6   int  466scan_ #L511" id="L511a>, buf;
sleb,
offs, 1, 0) !       b        
> 548    6     66t 514            "line" name="L471">fs" 455""> 545     fs" 455"0) !       b         476     6  ubifs_leb_unmap(c, e"> 514        +code=ef">e"> de=lnum" class="sref">lnum, en" class="sref">len)
offs, 1, 0) != - 514                 538                                return (             o             @buf: bu5fer to checkfs" 455""> 545     fs" 455"0) !href="+code=c" class="sref">c->ub6ef">no_m56e_no57href="fs/ubifs/rec6very.67name="L548" 514                 +ref="+code=c" clafs" 455""> 545     fs" 455"0) !       b        ln57lnum,  545     fs" 455"0) !       b        
 545     fs" 455"0) !       b        buf6,  506    6   in67ifs/recoverrrrrrrrr"+code=c" - 514                 +ref="+code=c" clareremounting_rw" cle" cla       b        ubifs_leb_unmap(lnum, (<57e cleb" class="sre6">de=6h" class="sref">ch       ="fs/ubifs/recoveryreremounting_rw" cle" classs=>sleb,

sleb,
6sleb,
, int 
sleb,
lhref="fs/ub"L5114" 1f="+code=prev"ndpt %d",
   d)class 476        ro_mounta href#L511" id="L5114" 1f="+code=prev"reremounting_rw" cle" cla= -EUCLEAN) {
ub6="sref">56ifs_58e=start" class="sr6f">st6rt 514                dbg56cvry58476"> 476     6            +code= 53="fs/ubifs/recovery.c#L534" id="unexpected ss="linvaluef">offs + ub6=ction r56="li58548" class="line" 6ame="6548"css="line" name="LINVAL="+code=c" clasLINVAL cla       b        las6="sref">len)
(             o             @buf: bu5fer to checksldef">u511" id="L511a4548" class="line"  should 56 emp59to flash */6(<59a>(69   ry.c#L4956 id=59a>, sleb,
sleb,
ro_mounta href="fseb->lnum, offs, 1, 0) != - 445     6   514            gotob_unmap(sleb,
lnum, offs, 1, 0) != -EUCLEAN) {

->len -)
 545                  struct 6ode=list_6mpty" class="sres= 
sldef">u="fseb->lnum, offs, 1, 0) != -ALIGN(offs, fir=slebn_fsde=lnum" class="sref4sref">len -)
 545                         @buf: bu5fer to checkfi67uncl60buf was readfi67u" c59445"> 445     7="+co70overy.c#L465" id="L465" claseeeeeeeeeeeeeeeeeeeeeeee* explanclasss aboutlinec   ssss we 501 5*
5a href="fs/ubif7ss="line67name6"L506"> 506    7   in70me="L466"> 466          +code= 53="fs/ubifs/recovery.c#L534" id="89" cla code= bifceslass="line/a>    ,489" cla68" L    sclass 476<     508     7  buf, 0,
 472{


 514                 +ref="+code=c" cla89" cla68"recovery.c#L50489" claass=" !        @buf: bu5fer to checkubifs_scan_node<7a>ine7 name="L548"lnum,  512     7     71ffs
ldLEB %d511" id="L511a4548" class="line"7+code=ub67s_sc6n_node" class="sref7>ubif7_scan_ #L511" 511" id="L511a4548" class="line"7+4ef">fi67 = <6 href="+code=snod" 7lalas71ef="+code=5very.c#L456" id="L496" cl7516" cla67="li61f">err)
 545    %0 uni4    472{
 541
 5718lff7"fs/ubifs/recovegroup7s9" class="line" name="L            6   int l_uncle +   /recov7 lae=71veryy.c#L465" id="of iroppL4""""""""""""""""* I"L501"> /a> ="L47es, always> 499 * @c: UBIF5 file-system de7464nod 5*
5a href="fs/ubif7name="L547"sno74 hre72uot;need to fix LEB %d start Źd ropifs_ingroup_unclea href="+code=sleb" class#37;d start ">en" class="sref">len)
ub7de=slebg97lnum, len -)
joffs        /ubifs/recoveryGCHDef">len -)
GCHD     struct 6ode=list_6mpty" class="sr7sref">ucl7b)
snod->ENOMEM;
 466 531elongspan /a>nsref">s09 inl/a>            6   int  499e=l min. I/O uni4 keep href="+co class So            6   int <89" cla68" is lass"L50of pletely            6   int  5372ecovegroupL4:67"n-zeroulaswh""""""""""""""""* with alllinec>  465 533     7     73ame67" idL509" i501" class==""""""""""""""""* 89" cla68" L    scB,aand1inec=lisiouscmin. I/O uni4 A. Ta>            6   int (73f="fs/ubifs/recovery.c#L464"""""""""""""""""* below 521"atriespan deal with a bituclass wmen half> 49B            6   int ucl7lnum,  nao e/a> ,aand1/a>            6   int  == 0) {
 466 49B 89ntains s9" claedLdataeo egarbage.n68"             6   int  =  * @c: UBIF5 file-system de7ass="sref7>err)
err;
 49inecmin. I/O uni4 hfslbee="wne"te="successfully            6   int a82,2 inlouc#L48.cfailurs            6   int len =  at lea =.            6   int  542     7     74.c#Lef="f="f01start) {
m,sreyLw/aneedLan d499 n? Why            6   int err =  49B by put"ingca            6   int ucl7="+code=start" class="sr7f">st74overy.c#L465" id="L465" clas""""""""""""""""* paddingcfs" came="? W9<err)
 466=loducedLwith powst cut emulclass            6   int err<7a>;
<74thin ropifs_in7" idubirop09"""""""""""""""""* testingcand has"Lns extremely r/a>ly.            6   int ucl74veryy.c#L465" id="of iroppL4""""""""""""""""* Imagmne /a> " id=ll,s09 naf65">> 53XLan > 53Y (obsiously,s> 53Y "             6   int  =57a hr55a> = <8urr iscGC=offsl> 5). Ta> @c" id=gc_, 0, " i-1,  465 542     7     75.c#Lef="f="f01> 53XLand willltryLan 89ntinue.nImagmne            6   int  53XLreccurr islylinecdirtiesty.c#,2and1ineca     Lof            6   int > 53Y "  exacslylinec>e=l aucl7="+c55445"> 445     7  > 53X.            6   int err)
 466err<7a>;
<75thin ropifs_in7" idubirop09"""""""""""""""""* And1a powst cut has"Lns wmen 501"> /a> movsd2f65">> 53XLan            6   int  53Y. W9 me="L/ryingcovele-syst>> 53Y  465ucl75veryy.c#L465" id="of iroppL4""""""""""""""""* offsl> 5. W9n/09< 53Y by paddingcmin. I/O uni4. And1later            6   int  = c(ails,2 * @c: UBIF5 file-system de7an>
 576.c#Lef="f="f01 53 465 53Y! Even>> 53X="comment"> * @c: UBIF5 file-system de7a="line" 7ef="56a>,  naame="Ldoe"="comment"> * @c: UBIF5 file-system de7a class="7hich56_node" class=e="L475"> 476f="fs/ubifs/recovery.c#L464"""""""""""""""""* 482 fitname 
> 53Y rny more! And1threc#L="comment"> * @c: UBIF5 file-system de7aref">ucl7ead<5span>
> 548    7     76overy.c#L465" id="L465" clas""""""""""""""""*  53Y. Ta>            6   int  476     7   466 effect  49ini>  465 with            6   int no_m57e_no57href="fs/ubifs/rec7very.77L501" id="L501" class="line"""""""""""""""""* shoulsl
> 53Y of pletely2and1ineclass="comment"> 6/
6a href="fs/ubif7lass="sr57">ln57> 53Y shoulslbecA.r hrec#L4basically="comment"> 6/
6a href="fs/ubif7l="line" 7name57/ubifs/recovery.c#7463" 77ame67" idL509" i501" class==""""""""""""""""* w467"/a> 514    ref">slef="+code=prev"c"> 514                      ine" name="L504%0 uni45"> 545    %0 uni4   < 506    7   in77ifs/recoverrrrrrrrr"+code=c" -l_unclea href="+code=sleb" class#37;d start ">en" class="sref">len)
ub7l the co57 the5corrupt node&#c#Lle7+code77unmap" class=511" id="L511a4548" class="line"7lction r57="+c57548" class="line" 7am *<77 class="co6ment">/* 6et the end offs7lnd.(<57e cleb" class="sre7">de=7h" class="sref_unmap(lnum, len -)
s1" clasf="fs/ubifs/recovec> 514                
 541
 472{
nodes, int 
len -)
upan _4srde=lnum" class="sref">lnum, len -)
ass="sref">buf, 0,
lhre1f="+code=prev"+code= nd"L504recovery.c#L504" id=" nd"L504de=lnum" class="sref">lnum, en" class="sref">len)
<1f="+code=prev"lass="sref">buf, 0,
 472{
57ifs_58e=start" class="sr7f">st7rt 514ef="fs/ubifs/reref="+code=c" class="sref">c, lnum, en" class="sref">len)
<1f="+code=prev"s"L545"> 545                      @buf: bu5fer to check 476     7   538                                return (             o             @buf: bu5fer to check/* 6et the end offs7orrupt n57eŦe cleb" class="sre7">las7="sref">len">en" class="sref">len)a href6ifs/recov6ry.c#L516" id="7 = (79ffs
 5487/a>  79s="sref">lhre1f="+code=prev"+code= 538          +code= 53="fs/ubifs/recovery.c#L534" id="89" claass ">offs + ub7_rcvry 548    7     79"sref">ro_mou1f="+code=prev"+code=s/ubia/ubifs/recover 511
lnum, offs, 1, 0) != -EUCLEAN) {
 445     7  (
lnum, buf, 0,
 472{
offs, 1, 0) !        b        css="line" name="L      ="+code=c" clasL      /a>)a href6ifs/recov6ry.c#L516" id="75ction r57c#L458" id="L498" class=7line"7948"(             o     : href6ifs/recov6ry.c#L516" id="7 rrupt n57B.
 + skip);

en" class="sref">len)        b        
<6 href="fs/ubifs/rec8very.80 class="sref"ss="line" name="L547">ERR_PTRef">len -)
ERR_PTRclass#37;d start  538                         b        (<59a>(fi68uncl60buf was readfi68u" c59445"> 445     8="+co80overy.c#L465" id="L465" clas* get_c="hq 0, - get ass=it/L     sequences 0,bstL> 511
 506    8   in80me="L466"> 466 500 6/
6a href="fs/ubif8 = <68href6"+code=sleb" c *> 53 0,bst  49ass=it/L     "+codecomment"> 6/
6a href="fs/ubif8<7a> = <68h#L458" id="L498" class=8   6/
6a href="fs/ubif8<8a> = <68h.
 6/
6a href="fs/ubif8<9a> = <68hjec5
ubifs_scan_node<8a>ine81L501" id="L501" class="line"*r hreccommes">css="liss="lin0 o="success2and1a negative77rror 521"a">c(ailu=".            6   int  512     8     81.c#Lef="f="f014et_c="hq 0,8          4et_c="hq 0,class = lnum, lass="sref">buf, 0,
"> 472{
fi68s_sc6n_node" class="sref8>ubif8_scan_ #L511"                 unsigiedLlongLlongL*um" class="sref"="hq 0,8          c="hq 0,clas               return fi68 = <6 href="+code=snod" 8lalas81ef="+truct 6ode=list_6mpty" class="sr8516" cla68="li61f">err)

c, )a href6ifs/recov6ry.c#L516" id="8s="line"68ame=61487" class="line" 8amef=81href="fs/ubif=line" name="L471"> 538                 f="+code=skip" clreremounting_rw" cle" claa href6ifs/recov6ry.c#L516" id="8s7a> = <68="+c"fs/ubifs/rec501"> 5818lff81 class="co6ment">/* 6et the end offs8ropifs_in8">l_uncle +   /recov8 lae=81" class="sref_unmap(,
buf, 0,
 472{
(c, lnum, lnum, ->sno84 hre82uot;need to fix LEB &ss="linss="line" name="LNOMEMef">len -)
ENOMEM claa href6ifs/recov6ry.c#L516" id="8de=slebg98lnum,  541
 472{
lnum, fi68 = (          out= 53 claa href6ifs/recov6ry.c#L516" id="8d4ef">fi68b)
c, len -)
a>
lnum, buf, 0,
-> 472{
ENOMEM;
 514ef="fs/ubifs/reine" _CS_    _SZ>lnum, css="line" name="LBADMSGef">len -)
EBADMSG
(          out=
sleb,
lnum, lnum, buf, 0,
 472{
 53829ref="fs/ubif="fs/ubifs/recoveryreremounting_rw" cle" clas!s=>sleb,
+code= 538          +code= 53="fs/ubifs/recovery.c#L534" id="N82 a vali501">      533     8     83             511" id="L511a4548" class="line"8scode=ub68cvry(833ref="fs/ubif="fs/ubifs/recovery"s/ubifs/recover 511sleb,
lnum, fi68lnum, snod->+code= 538          +code= 53="fs/ubifs/recovery.c#L534" id="N8de a CS01"> ,atypfc#L4a>         == 0) {
(          out= 53 claa href6ifs/recov6ry.c#L516" id="8s="line"68 =            64_to_cpude=lnum" class="sref"s/ubifs/recover 511sleb,
err;
+code= 538          +code= 53="fs/ubifs/recovery.c#L534" id="CS01">  =msleb4a>   llus!s=8urr isc=msleb4a>   llu    ->           64_to_cpude=lnum" class="sref"s/ubifs/recover 511len = sleb,
 542     8     84uot;need to fix LEB &gotob_unmap(          out= 53 claa href6ifs/recov6ry.c#L516" id="8a="line" 8f">start) {
err =           c="hq 0,classs=>sleb,
           64_to_cpude=lnum" class="sref"s/ubifs/recover 511          hq 0,clas a href6ifs/recov6ry.c#L516" id="8a4ef">fi68="+code=start" class="sr8f">st84t 514ef="fs/ubifs/rendpt %d",
          c="hq 0,clas a href6ifs/recov6ry.c#L516" id="8a16" cla68s="sref">err)
err<8a>;
<84unmap" class=ss="lin0a href6ifs/recov6ry.c#L516" id="8ass="sref8 id="L548" class="line" 8ame="84 class="co6ment">/* 6et the end offs8ade=err" 8io_size cleb" class="sre8">ucl84veryy.unmap(          out= 53 cla: href6ifs/recov6ry.c#L516" id="8a.c#L540"8d to min_io_size cleb" c8as/re84N(css="line" name="LINVAL="+code=c" clasLINVAL cla       b         =58a hr55a> = (          out=
 542     8     85ffs
          +code= 53="fs/ubifs/recovery.c#L534" id="(ailespan get CS0hq 0,    lhre1f="+code=prev"k
          k
fi68="+c55445"> 445     8  err)
err<8a>;
<85thin ropifs_in7" idubirop09/**            6   int ucl85veryy.c#L465" id="of iroppL4* @c:"ine" name="L500"> 500 6/
6a href="fs/ubif8+.c#L540"8are 55in_io_size cleb" c8as/re85ecovegroupL4:67"n-zeroulaswh* @);
<:>> 53 0,bst="comment"> 6/
6a href="fs/ubif8cription58bjec56a> =  6/
6a href="fs/ubif8c 586.c#Lef="f="f01> 5-me="d 1" fst>an us"decomment"> 6/
6a href="fs/ubif8a="line" 8ef="56a>,  486f="fs/ubifs/recovery.c#L464"*r hreccommes">cdoe"Laa>fi68ead<5span>
> 548    8     86overy.c#L465" id="L465" clas*lbee="faussd by > 465 attcodeingcovele-syst            6   int  476     8   466 5<css="liss="lin0 o="success2and1a negative77rror 521"a">c(ailu=".            6   int 
en" class="sref"> classhref=>ennmap"*um" class="sref#L491ir="+cod_log  classr="+cod_log lnum, lass="sref">buf, 0,
no_m58e_no57href="fs/ubifs/rec8very.871" id="L511" class="l" class=544444444444444444444iline" name="L471">"> 472{
len -)
s1" clas               return ln57lhre = en" class="sref"> classhref=>ennmap"*um" class="sref">en" class="sref">len)a href6ifs/recov6ry.c#L516" id="8l= next_lass="sref">bufnext_lass/a>)a href6ifs/recov6ry.c#L516" id="8l4ef">fi68ref=5+code=struct  506    8   in87ifs/recovery.ine" name="L504ndpt %d",
 + skip);
bufnext_lass/a>)ss=>sleb,
skip);
bufnext_lass/a>)s id=s=>sleb,
len -)
ine" _LOG_LNUMa hr + >sleb,
(<57e cleb" class="sre8">de=87)
next_lass="sref">bufnext_lass/a>)ss=>sleb,
len -)
ine" _LOG_LNUMa hr       b        
bufnext_lass/a>)s!s=>sleb,
bufltail_lass     struct 6ode=list_6mpty" class="sr8s/ubifs/58cove58to flash */8ate/a>            6   int  5<"  eode= or outlofedate.            6   int 58ifs_58e=start" class="sr8f">st88ref">snod->">en" class="sref">len)ss=>sleb,
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<:>> 53 0,bst  49offslovele-syst            6   int l_uncle +   /recov9 lae=91veryy.c#L465" id="of iroppL4* @="fs: ="fset  49offslovele-syst            6   int  = <69 = > 5-me="d 1" fst>an us"decomment"> 6/
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ENOMEM;
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s1" clas               return ly.c#L492" id="L492" classhref="+code=snod"ubifs/recovery.c#L541" id="L541" class="lmax_writehme="L541"> 541
max_writehme="/ubia fs/ubifs/recove 538                        b        (& = <69" class="line" name="L539"> 53929ref="fs/ubif="fs/ubifs/recovery"> 472{
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 533     9     93             ="fseb-> 545                  href6ifs/recov6ry.c#L516" id="9 ref">fi69cvry(93scan_ #L511"         ss="lin0a href6ifs/recov6ry.c#L516" id="9 4ef">fi69lnum,  == 0) {
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 472{
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 542     9     94uot;need to fix LEB &ef="fs/ubifs/reref="+code=c" class="sref">cref="+code=buf" classlen -)
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6a href="fs/ubif9a="line" 9ef="56a>,  6/
6a href="fs/ubif9a class="9hich56_node" class=e="L495"> 496f="fs/ubifs/recovery.c#L464"*rand1LPTchefss.            6   int fi69ead<5span>
> 548    9     96overy.c#L465" id="L465" clas*            6   int  476     9   466css="liss="lin0 o="success2and1a negative77rror 521"a">c(ailu=".            6   int  classr="+cod_inl_offss" class="sref"> classr="+cod_inl_offssde=ln = lnum, len -)
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 4/ubi         @buf: bu5fer to check
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 4/ubihrfs/ubifs/recoves4sref">len -)
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6a href="fs/ubif9=.c#L540"9="+c58in_io_size cleb" c9asleb98ecovegroupL4:67"n-zeroulaswh* @uspab: > 5<"nformclass="comment"> 6/
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 472{
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10acode=ubifsdLE="fs/ubifs/recoveryle.c#L492" id="L492" classh= 0 struct 6ode=list_6mpty" class="sr10a7ion10afs/ubifs/recovegroup7eint 
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a>
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err)
 538                  href=href=4ef="fs/ubifs/reref="+code=c" class="sref"!>css="line" name="LBADMSG="+code=c" clasLBADMSG                   return 10=code=ubifsdLEB %dss="lin="+code=offs" cref="+code=c" class="srefa href6ifs/recov6ry.c#L516" id="10=7ion 510="+>10= class="co6ment">/* 6et the end offs10=8ionl_uncle +   /recov10">l>10=)
10=very.c#L546" id="L546=line" name="L471">r=remounting_rw" crerclasa href6ifs/recov6ry.c#L516" id="102tion10"/* 6et the end offs1021ionsno10e=s>10"uot;need to fix LEB &ef="fs/ubifs/recondhrfschesef">len -)
condhrfschesde=ln         @buf: bu5fer to check, rfc#L4sp"7rror *             6   int )
snod->r=remounting_rw" crerclasss=>sleb,
lnum, len -)
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 472{
ENOMEM;
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10"fs/ubifs/recovegroup7        eint  , and notla paddingc1">  *             6   int (&10")
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1" clas        @buf: bu5fer to check10"very.c#L546" id="L546" class==line" name="L471">n71"_= 545         n71"_= 5clas        @buf: bu5fer to check10 ba>10 be="L11" id="L511a4548" class="line"1031ion         n71"_= 5classs=>sleb,
 533     10ame>10 s="sref">lhreeeeeeeeeeeeeeeeeef="fs/ubifs/re"> 472{
sleb,
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1" class+s=>sleb,
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         n71"_= 5clas        @buf: bu5fer to check == 0) {
 = err)
/* 6et the end offs1038ionerr;
10 )
r=remounting_rw" crerclass     0 struct 6ode=list_6mpty" class="sr1039ion10 very.c#L546" id="L546" class=eint   *             6   int len = lhreeeeeeeeeeeeeeeeeef="fs/ubifs/re"> 472{
sleb,
 542     10ame>10>ffs
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start) {
>10>s="sref">lhreeeeeeeeeeeeeeeeeef="fs/ubifs/rele.c#L492" id="L492" class-s=>sleb,
err = 10>ref">snod->err)
err<10e=e>10>code=ubifsdLEB %d"line" name="L538">r=remounting_rw" crerclassss=>sleb,
10>fs/ubifs/recovegroup7        eef="+code=buf" class 538          +code= 53="fs/ubifs/recovery.c#L534" id="unexpecaedLeode= bifce ates 476        buf, 0,
 472{
10>very.c#L546" id="L546" class=ss="linss="line" name="L      ="+code=c" clasL      /a>)        @buf: bu5fer to check = snod-> 542     10(10auot;n href6ifs/recov6ry.c#L516" id="10a2ion, lhreeeeeeeee"line" name="L538">quieremounting_rw" cquierclas struct 6ode=list_6mpty" class="sr1053ion10ascan_ #L511"                 "int  445     10="+>10aref">snod->err)
10aifs/recoverrrrrrrrr"+code=c" continue        @buf: bu5fer to checkerr<10nam>10acode=ubifsdLEB %d511" id="L511a4548" class="line"1057ion10a class="co6ment">/* 6et the end offs1058iona>

lnum, buf, 0,
 472{
len -)
1" clas         @buf: bu5fer to check10avery.c#L546" id="L546ss="linss="line" name="L      ="+code=c" clasL      /a>)        @buf: bu5fer to check = , lhreeint 10b3ref="fs/ubifh" name="L471">ry.c#L492" id="L492" classhref="+code=snod"ALIG ="+code=c" clasALIG clasnum" class="sref spabbifs/recovery.c csnod="fs/ubifs/recoveryle.c#L492" id="L492" class     ine" name="L504 spabbifs/recovery.c c 476     10#L4>10bifs/recoverrrrrrrrr"+=line" name="L471">pfs_le.c#L492" id="L49pfs_le.classhref="+code=snod"le.c#L492" id="L492" class-ref="+code=snod"ALIG ="+code=c" clasALIG clasnum" class="sref spabbifs/recovery.c c10bunmap11" id="L511a4548" class="line"10b7ion10bfs/ubifs/recovegroup7="fs/ubifs/recoverypfs_le.c#L492" id="L49pfs_le.class     0 struct 6ode=list_6mpty" class="sr1068ion

<>10b)
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10e   10et 514ef="fs/ubifs/reref="+code=c" class="sref">c, lnum, buf, 0,
len -)
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 + buf, 0,

10eclass href6ifs/recov6ry.c#L516" id="108tion10cov>10co class="srefss="lin0a href6ifs/recov6ry.c#L516" id="1081ion, int 10cffs10c    5sduringcrffs-only mounr.            6   int  476     10cvr>10cme="L466"> 466 500 6/
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10 very.c#L546" id="L546=line" name="L471">ref="+code=c" class="srefa href6ifs/recov6ry.c#L516" id="11ation
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ubifs_scan_node<11="s>11="ery.511" id="L511a4548" class="line"11=1ion 512     11ame>111uot;n href6ifs/recov6ry.c#L516" id="11=2ion111overy.c#L465" id="L465" clas*l@c:"ine" name="L500"> 500 6/
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 466111thin ropifs_in7" idubirop09s*  hrec#L4s helperccommes">cfors="l9; class href_gc_ass=it()="l9;owhichagrabs4sp"7ode=            6   int  511="+>111a69"" id="L501" class="line"* .c#lovebfcussd"as GCl_uncle +   /recov11">l>111veryy.c#L465" id="of iroppL4* zeroein cass"of"success2and1a negative77rror 521"ain cass"of"(ailu=".            6   int 11"grab_eode= lnum, sno11e=s>11"uot;ntruct 6ode=list_6mpty" class="sr1122ion, lhreiline" name="L471">lass="sref">buf, 0,
11"ref">snod" idL509" i501" class=/*            6   int ENOMEM;
 466112thin ropifs_in7" idubirop09sssssssssthrun /a>cis L467"/a>rfcmightebe            6   int  one"whichahas been /a>            6   int (&112veryy.c#L465" id="of iroppL4ssssssssth@c" id=gc_, 0, justcbeforfc/a> powerccutchappe ed. Duringc/a>112ecovegroupL4:67"n-zeroulaswhssssssssthine" noperclass (notlnow)h@c" id=gc_, 0, is marksd"as  +taken +, solno            6   int 11 ba>113ecovegroupL4:67"n-zeroulaswhssssssssthone butcGC113.c#Lef="f="f01            6   int  533     11ame>113ame67" idL509" i501" class==ssssssssthass=it/will grab4it and writel/a>rf."Rsmembst>a467"/a>            6   int (rfc#L4fref bifce, and it only            6   int , 113me="L466"> 466113thin ropifs_in7" idubirop09sssssssssthIOW,lif we1run ass=it now, we1mightenotlbecable"ovefind1a fref .c#            6   int err)
a4i=.            6   int err;
113veryy.c#L465" id="of iroppL4sssssssst             6   int 113N(buf, 0,
cref="+code=buf"  id="find_fref lnum, le>114 class="sref"="fse" name="L538">lass="sref">buf, 0,
 542     11ame>11>ffs
 + start) {
>11>s="sref">lhreeeeeeeeeref="+code=buf"  id="dump_lpropss/recover 511
lnum, err = lnum, 11>ref">snod->buf, 0,
err)
err<11e=e>114unmap11" id="L511a4548" class="line"1147ion11>fs/ubifs/reco"int c, lnum, buf, 0,
bufLPROPS_NC
bufLPROPS_NC
11>very.c#L546" id="L546" class="         ref="+code=buf"LPROPS_INDEX="sref">bufLPROPS_INDEX
115 class="sref"="fse" name="L538"> 538                                return  542     11(115uot;need to fix LEB &ss="lin="+code=offs" cref="+code=c" class="srefa href6ifs/recov6ry.c#L516" id="1152ion, 1153ref="fs/ubifh" name="L471">ubifs/recovery.c#L541" id="L541" class="lgc_, 0,bifs/recovery.cgc_, 0,
cref="+code=buf"lass="sref">buf, 0,
 445     11="+>115t 514ef="fs/ubifs/rendpt %d",
 + buf, 0,
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115me="L11" id="L511a4548" class="line"1156ionerr<11nam>11acode=ubifsdLEss="lin="+code=offs" c class un_ass=its/recover 511
lnum, 11a clas511" id="L511a4548" class="line"1158ion115ecovegroupL4:67"n-zeroulasw/**            6   int  = and1run /a>116.c#Lef="f="f01 500 6/
6a href="fs/ubif1162ion,  6/
6a href="fs/ubif1163ion116f="fs/ubifs/recovery.c#L464"*rOut-of-plfce garbag>cssquires2always one"7ode= .c#lwith"whichato            6   int 
> 548    11ead>116overy.c#L465" id="L465" clas*lL  rt garbag>.  heLLEB  0,bst>is 476     11#L4>116me="L466"> 466n21"a">cunmounring. In /a>
<>116veryy.c#L465" id="of iroppL4* Howecod,"/a>rfcmayenotlbecenoughLeode= bifce,ain whichaaass"it mustcbe            6   int 116ecovegroupL4:67"n-zeroulaswh* possible"oveGC 5<"nLoa/a> 5.            6   int ln57l>117.c#Lef="f="f01calso1runs /a> 506    11ame>117me="L466"> 466css="liss="lin0 o="success2and1a negative77rror 521"a">c(ailu=".            6   int 117thin ropifs_in7" idubirop09s*             6   int  class href_gc_ass=its/recover 511
lnum, (<57e cleb" class="sre11a>(>11e" clatruct 6ode=list_6mpty" class="sr1179ion
117very.c#L546"  = len -)
 classw4srclass*um" class="srefw4sref">len -)
w1" classhrhref=ef="+code=snod"ubifs/recovery.c#L541" id="L541" class="ljhefsss/recover 511len -)
w1" clasa href6ifs/recov6ry.c#L516" id="118tion11cov>11co class="sref = 
 538                 a href6ifs/recov6ry.c#L516" id="1182ionndpt %d",
 + len -)
w1" clas" id="L541" class="lbuf, 0,
len -)
w1" clas" id="L541" class="l"> 472{
 476     11cvr>1185ref="fs/ubifh" name="L471">ubifs/recovery.c#L541" id="L541" class="lgc_, 0,bifs/recovery.cgc_, 0,
c-1       b        118code=ubifsdLE="fs/ubifs/recoveryw4sref">len -)
w1" clas" id="L541" class="lbuf, 0,
len -)
w1" clas" id="L541" class="l"> 472{
lnum, c, lnum, len -)
w1" clas" id="L541" class="l"> 472{
 538                  struct 6ode=list_6mpty" class="sr1191ion(<59a>( 538                  !>css="line" name="LNOSPC="sref">bufLNOSPCef="               return  54811 id>119s="sref">lhreeeeeeeeeeeeeeeeess="lin="+code=offs" cref="+code=c" class="srefa href6ifs/recov6ry.c#L516" id="11 3ion 548    11(119scan_      b         445     115" >119ref">snod->ndpt %d",
lnum, 119 class="co6ment">/* 6et the end offs1198ion
lps/recover 511bufLPROPS_INDEX
119N(erts/recover 511
ert="fs/e" name="L538">lps/recover 511len -)
w1" clas" id="L541" class="l"> 472{
120be="L11" id="L511a4548" class="line"12a1ion(<59a>( 54812aid>120ame67" idL509" i501" class==ssssssssthWe1run /a>co/a>rwisessubssqu"li            6   int  548    12a120f="fs/ubifs/recovery.c#L464"ssssssssthmounr=/will seea/a>cin1a 445     12a" >120overy.c#L465" id="L465" classssssssst             6   int ndpt %d",
c, lnum, 12afs/ubifs/reco="fse" name="L538"> 538                                return 120)
120class href6ifs/recov6ry.c#L516" id="121tionubifs_scan_node<12="s>1210ref="fs/ubifh" name="L471">ndpt %d",
 53="line + buf, 0,
 512     12ame>1211ref="fs/ubifh" name="L471">mutex_lock_nestesef">len -)
mutex_lock_nestes="fs/href=ef="+code=snod"w4sref">len -)
w1" clas" id="L541" class="lio_mutexef">len -)
io_mutexde=lhref="fs/ubifs/rew4sref">len -)
w1" clas" id="L541" class="ljhefss/recover 511c, lnum,  538                 "&id=s=0 struct 6ode=list_6mpty" class="sr12=4ion121ref">snod-> 5328             2sref">c, len -)
 classw4sr_sync_nolockde=lnum" class="srefw4sref">len -)
w1" clas         @buf: bu5fer to checkerr)
121code=ubifsdLEB %d"line" name="L538"> 5328             2sref               return  512="+>121fs/ubifs/recovegroup7        eef="+code=buf"ref="+code=c" class="sref">c, l_uncle +   /recov12">l>121)
len -)
mutex_unlock="fs/href=ef="+code=snod"w4sref">len -)
w1" clas" id="L541" class="lio_mutexef">len -)
io_mutexde=l         @buf: bu5fer to check122 class="sref"="fse" name="L538"> 538                 "&l   0 struct 6ode=list_6mpty" class="sr1221ionsno12e=s>122ffs
 +                           @buf: bu5fer to check, lhreeeeeeeee="fse" name="L538"> 538                 "=>css="line" name="LAGAI ="+code=c" clasLAGAI sref               return css="line" name="LINVAL="+code=c" clasLINVALsref        @buf: bu5fer to check)
snod->ENOMEM;
erts/recover 511
ert="fs/e" name="L538"> 538                 "=>cef="fs/ubifs/reLEB_RETAI EDs/recover 511(&1228class="sref"="fse" name="L538"> 538                 "!>cef="fs/ubifs/reLEB_RETAI EDs/recover 511122very.c#L546" id="L546ss="linss="line" name="LINVAL="+code=c" clasLINVALsref        @buf: bu5fer to check12 ba>123be="L11" id="L511a4548" class="line"1231ionref="+code=c" class="sref">c, lnum, ubifs/recovery.c#L541" id="L541" class="lgc_, 0,bifs/recovery.cgc_, 0,
 533     12ame>1232class="sref"="fse" name="L538"> 538                         @buf: bu5fer to check(123overy       @buf: bu5fer to check == 0) {
ndpt %d",
 + buf, 0,
 = er>123 clas511" id="L511a4548" class="line"1238ionerr;
123)11" id="L511a4548" class="line"1239ion123ecovegroupL4:67"n-zeroulasw/**            6   int len = cforsf="+code=            6   int  542     12ame>124.c#Lef="f="f01start) {
>124ame67" idL509" i501" class==* @i 0,: in21"a 0,bst            6   int err = cin21"            6   int 124overy.c#L465" id="L465" clas*l@d_me=":amaximumame=" bassd"">cdata>n21"s            6   int err)
 466rl/a>err<12e=e>124thin ropifs_in7" idubirop09"* @in21": in21"a="fpifnedain memode rwairingcrwlmlas"ovefix ii            6   int 124a69"" id="L501" class="line"*             6   int bufme="_ent37ode=utruct 6ode=list_6mpty" class="sr1249ion124very.c#L546"  = bufrb_n21"ery.cref="+code=buf"rb="sref">bufrbsrefa href6ifs/recov6ry.c#L516" id="125tion = in2_ts/recover 511bufi 0,
 542     12(1251ref="fs/ubifh" name="L471">loff_ts/recover 511,  +taken<2="+>123ref="fs/ubifh"line" name="L471">existf="+code=c" clasexists f="a href6ifs/recov6ry.c#L516" id="1244ion 445     21="+>215t 51  = bufbuferr)
215me="}"a href6ifs/recov6ry.c#L516" id="1246ionerr<21nam>252unmap11" id="L511a4548" class="line"1157ion254a69"" id="L501" class="linw/**            6   int ame="-tree=            6   int 215ecovegroupL4:67"n-zeroulasfs*l@c:"ine" name="L500"> 500 6/
6a href="fs/ubif216tion = 216.c#Lef="f="f01cin21"            6   int  54821ef=>216ame67" idL509" i501" class==*l@d_me=":amaximumame=" bassd"">cdata>n21"s            6   int 216f="fs/ubifs/recovery.c#L464"* @exists: indicateL4whe/a>rl/a> 476     21#L4>216me="sL  opifiline" name="L471"add_i_n"="sref">buflnum, in2_ts/recover 511bufi 0,
lnum, bufbu* buf, 0,
b,, err" class=112#L>116ecovegroupL4:67"n-z2roula26ode=buf"rb_n21"="sref">bufrb_n2="_ent37ode=utruct 6ode=list_6mpty" clas errbifs/rec112_n>117ecovegroupL4:67"n-z2roula27ss="line"1231ionerrbs=e="L421h117f="fs/ubifs/recover2.c#L427/ubifs/reref="+code=c" class="sref">cref="+code=buf"L516"hunmaps/recover 51rb=t37ode=utruct 6ode=lrb=t37od/a>, bufrb_n2="_ent37ode=utruct 6ode=list_6mpty" clacover 511 =  538                   fcode=offs" classloff_ts/repty" c" class="sref">cref="+code=buf"L516"xef">len -)
io_mucode=offs" classloff_ts/ree=sta1167ion    112me>117me="L466"> 466<2pan c27" ss="lin="+code=offs" cref="len -)
io_mrb=lef " class="llass=rb=lef serrbfs is tionth>117thin ropifs_in7" id2birop27e="L471"add_iu24="infelseid="1245ionerrbre data112"+>11e clasiline" name="L271"> 27  eef="+code=buf"ref="+code=c" class="sref">1" class="llass=pslen -)
io_mrb=rfref" class="llass=rb=rfrefserrbfs/reco112>(>11e" clatruct 6ode=lis2_6mpt274548" class="line"1219ionubifs_sc/112ov>11co class="sref =  ref="+code=buf"kz  classst_ofssinfonodes" class="s" ="_ent37ode=utruct 6ode=list_6mpty" cla)cover 511 =  538 f=="+code=c" clas>icref="+code=buf"L516"e=sta1167ion11c   errss="sref112co>1183ref="fs/ubifh" nam2="L4728 determin1194ion 4452lass="sr112fs>11covery       @buf: b25fer 28endpt %d",
len -)
io_mucode=offs" classloff_ts/rehunmaps/recover 51a href6ifs/recov6ry.c#L516" id="1251ion 542     112vr>1185ref="fs/ubifh" nam2="L472">ubifs/recovery.c#L541" id="cref="+code=buf"L516"xef">len -)
io_muf=0+11" id="L511a4548" class="hunmaps/recover 51af="a href6ifs/recov6ry.c#L516" id="1252ion, 118code=ubifsdLE="fs/u2ifs/r28eref="+code=c" class="sref">cref="+code=buf"L516"xef">len -)
io_m+rdedain /a>n21"ais118fs/ubifs/recovegrou27ss="28c classan>erts/recover 511len -)
io_m          6   int  445118)11" id="L511a4248" c2ass="line"11c9ion118N(rb=linkery.cref="+code=buf"rb=linkery.c clasecovery.c#L541" id="cref="+code=buf"L516"xef">len -)
io_mef6ifs/recov6ry.c#L516"cover 511 445112em>119 class="sref"="fse"2name=29>in2_ts/recover 511len -)
io_mef6ifs/recov6ry.c#L516"coecovery.c#L541" id="L541" class="ljhefsss/recover 511sleb,
ref"a id="1244ion 445(>119uot;need to fix LEB2&"lin29516" id="11=2ion 548112id>119s="sref">lhreeeeeee2eeeee2eeess="lin="+c.c#L516" id="1237ionerr)
    112119scan_      b       2119ref">snod-><2 h" n29 check == 0) {
11 code=ubifsdLE511" i2="L5129"* @in21": in21"a="fpifnedain s="sre="-trhre           on6   int 119 class="co6ment">/*26et t29"* bfcussd. Instsad, rf"+code alaass objecs="comment"> 6/
6a href="fs/ubif216tion = 119N(grab_eod1"="sref">bufrb_n2="_ent37ode=utruct 6ode=list_6mpty" clas lnum, in2_ts/recover 511bufi 0,
 548123id>120ame67" idL509" i5013 clas30eess="lin="+c="sref">bufbu*" class="sref">1" class="llass=psbuf, 0,
b id="1237ionerr)
    123120f="fs/ubifs/recover3.c#L4303ess="lin="+c="sref">buferr     123" >120overy.c#L465" id="L365" c30 check == 0) {
ndpt %d&_eode==cref="+code=buf"L516"hunmaps/recover 51rb=t37ode=utruct 6ode=lrb=t37od/a>, bufrb_n2="_ent37ode=utruct 6ode=list_6mpty" clacover 511 = 12afs/ubifs/reco="fse"3name=30  eef="+code=buf"ref=                   fcode=offs" classloff_ts/repty" c" class="sref">cref="+code=buf"L516"xef">len -)
io_mucode=offs" classloff_ts/ree=sta1167ion1" class="llass=pslen -)
io_mrb=lef " class="llass=rb=lef serr120class href6ifs/reco36ry.c30nss="line" name="LINVelse=                   fcode=offs" classloff_ts/reptg" c" class="sref">cref="+code=buf"L516"xef">len -)
io_mucode=offs" classloff_ts/ree=sta1167ion1210ref="fs/ubifh" nam3="L473">ndpt %d&" cref="u24="inf" class="sref">1" class="llass=pslen -)
io_mrb=rfref" class="llass=rb=rfrefserr     123me>1211ref="fs/ubifh" nam3="L4731code=buf"  id=" 538err1212ode=ubifsdLEef="fs3ubifs31code=buf"  id="dump_lllllllll+code=c" class="srefa href="+code=buf"L516" id="1245ionerr1213s/ubifs/reco="fse"3name=3L538"> 538line"1219ion121ref">snod-><3 "lin3" name="L471">+code=c" class="srefa NUL       @buf: bu5NUL 516" id="1245ionerr121me="L11" id="L511a4348" c3ass="lline"1219ion 5123"+>121fs/ubifs/recovegrou37    31/**            6   int l>121)
121N( 500 6/
6a href="fs/ubif216tion = 122 class="sref"="fse"3name=32h* @i 0,: in21"a 0,bst            6   int sno123=s>122ffs
cin21"    f="+code=sta112tionlhreeeeeee3e="fs3" namerab_eodvoidover 511lnum, in2_ts/recover 511bufi 0,
122scan_ #L511"       3     3   "efs="sr1221ionsnod-><3 ss="32ode=bufi_n21"="sref">bufin2_ts/recover 511err;
122ifs/recoverrr511" i3="L5132ss="line"1216ion122unmap11" id="L511a4348" c32overyw4sref">len<"+code=c" clas>icref="+code=buf"L516"e=sta1167ion1227(err1228class="sref"="fse"3name=32h classan>erts/recover 511len -)
io_mef6ifs/recov6ry.c#L516"coecovery.c#L541" id="L541" class="ljhefsss/recover 511sleb,
ref"a id="1244ion 4453ame="L53123 c>122very.c#L546" id="L536ss="32cref="+code=c" class="sref">k + >sleb,
 4453/123ba>123be="L11" id="L511a4348" c3ass="lline"1219ion     123me>1232class="sref"="fse"3name=33=*l@d_me=":amaximumame=" baref="+code=sta1158ionrlsref">"> troy_ist_6t+ >-trh+ >-resource andl+ 123overy       @buf: b35fer 33s*l@d_me=":amaximumame=" bassd"laass objecs="comment"> 6/
6a href="fs/ubif216tion = 123code=ubifsdLEss="li30a hr3f6ifs/voidover 511"> troy_ist_6t+ >ass*um" class="sref">"> troy_ist_6t+ > classinfonodes" class="s" id="infoclass*um" class="sref">lnum, in2_ts/rece=sta1167ionbufbu*>bufbuf, 0,
b id="1237ionerr)
123ecovegroupL4:67"n-z3roula33ode=buf"rb_n21"="sref">bufrb_n2="_ent37ode=utruct 6ode=list_6mpty" clas err124ecovegroupL4:67"n-z3roula34ss="line"1231ion>124ame67" idL509" i5013 clas34 name="L538"> 538                 "=  inref="+code=buf"  inslen -)
io_mrb=lef " class="llass=rb=lef s124f="fs/ubifs/recover3.c#L434  "ef="+code=buf"ref="+code=c" class="sref">  inref="+code=buf"  inslen -)
io_mrb=lef " class="llass=rb=lef serr124overy.c#L465" id="L365" c34 name="L538"> 538>>>>>>>>cospanue id="1245ionerr124me="L466"> 466<3pan c34" ss="lin="+code=offs}Velse=                     inref="+code=buf"  inslen -)
io_mrb=rfref" class="llass=rb=rfrefs  inref="+code=buf"  inslen -)
io_mrb=rfref" class="llass=rb=rfrefserr124a69"" id="L501" cla3s="li34  eef="+code=buf"ref="+code=ccospanue id="1245ionerr;
124" cla = 124very.c#L546"  = cref="+code=buf"L516"hunmaps/recover 51rb=t37ode=utruct 6ode=lrb=t37od/a>, bufrb_n2="_ent37ode=utruct 6ode=list_6mpty" clacover 511 = 1250ref="fs/ubifh" nam3="L4735>ndpt %d&" cref="                    ref="+code=buf"L516"xef">len -)
io_mucy.cref="+code=buf"y.c#L516"e=sta1167ion     1231251ref="fs/ubifh" nam3="L4735code=buf"  id=" 538ipuef="+code=buf"iaspueecov                 ref="+code=buf"L516"xef">len -)
io_mucy.cref="+code=buf"y.c#L516"eck = 1252ode=ubifsdLEef="fs3ubifs35code=buf"  id="dump_lpropss/recover   inref="+code=buf"  ins = 123ref="fs/ubifh"line"3name=35  "ef="+code=buf"ref=                     inref="+code=buf"  ins215t 51  =  538>>>>>>>>                 "=  inref="+code=buf"  inslen -)
io_mrb=lef " class="llass=rb=lef slen -)
io_mef6ifs/recov6ry.c#L516"e=sta1167ionlen -)
io_mrb=lef " class="llass=rb=lef serrerr<213am>252unmap11" id="L511a4348" c35e="L471"add_iu24="infoclode=celseid="1245ionerr254a69"" id="L501" cla3s="li35  eef="+code=buf"ref="+code=c="dump_lpropss/recover   inref="+code=buf"  inslen -)
io_mrb=rfref" class="llass=rb=rfrefserr;
256veryy.c#L465" id="o3 irop35n="+code=offs" cref="line"1219ion215ecovegroupL4:67"n-z3roula35nss="line" name="LINV" class="sref">k + >sleb,
 4453ef="+cod213je>216ecovegroupL4:67"n-z3roula36>ndpt %d&line"1219ion216.c#Lef="f="f01loff_ts/recover 511err 548213f=>216ame67" idL509" i5013 clas3==*l@dline"1219ion216f="fs/ubifs/recover3.c#L436 determin1194ion 4453    213ad>216overy.c#L465" id="L365" c3as*             6   int      213L4>216me="sL  opifiline" 3ame="36s* @exists: indicateL4whe/a>rlsref">L455e c_ist_6accum-treccumul+  5423ffs is tio3 6/
6a href="fs/ubif216tion = 116a69"" id="L501" cla3s="li36"* bfcussd. Instsad, rf"+code akey:a6hre keyef="fs/ubif216tion = ;
116veryy.c#L465" id="o3 irop364*add_i_n7 -addelrn"ent37 Loa/ er.     :a6hre is   inader.     ef="fs/ubif216tion = 116ecovegroupL4:67"n-z3roula36s*l@c:"ine" name="L500"> 500cdata>f="+code= ef="fs/ubif216tion = 117ecovegroupL4:67"n-z3roula37h* @i 0,: in21"a 0,bst       ef="fs/ubif216tion = l>117.c#Lef="f="f01cin21"     This  un      has two purposes:ef="fs/ubif216tion = cin1r>caina6hint  = rlllll2)   6ensur>cin1r>caina6hint  =      213me>117me="L466"> 466<3pan c37s* @exists: indicateL4whe/a>rl  ineach  int def="fs/ubif216tion = 11e clasiline" name="L371"> 37"* bfcussd. Instsad, rf"+code by "="nc    6s)c fsta s/re"aexists       int  5423/a>
117very.c#L546"  =  500<="+code=sta1241ion 5423/113ov>11co class="sref = cis stelee    possibilitycinat in1r>cainant cin21"     beerd     @b + bint cindex. Alt1rnts vely, som  provis    /a> +ef="fs/ubif216tion = rlb in2 int  + seemef="fs/ubif216tion =     213fs>11covery       @buf: b35fer 38s*l@d_me=":amaximumame=" bassda> = c6hrefsom    inadscenario  nat is quitecunlikelyc fst 6  only/negts veef="fs/ubif216tion =      213vr>1185ref="fs/ubifh" nam3="L4738s* @exists: indicateL4whe/a>rlcon1a6hrec118code=ubifsdLE="fs/u3ifs/r38"* @in21": in21"a="fpifnedain="+code=sta1159ion118fs/ubifs/recovegrou37ss="38"* bfcussd. Instsad, rf"+code This  un     s_eode= sfcode=0 on6successc fsta negts vecode=ofrefa on6f="+code=sta1159ion;
118)11" id="L511a4348" c384*add_i_n7 -addelrn"ent37 Loaf="+code=sta112tion118N(L455e c_ist_6accumass*um" class="sref">L455e c_ist_6accum classinfonodes" class="s" id="infoclass*um" class="sref">lnum, in2_ts/rec,cun    des" class="s" id="inkeyass*um" class="sref">keyefa>, 113em>119 class="sref"="fse"3name=39>ndpt %d&" cref="u24="infffffff"datelrnd refnor  er.     ass*um" class="er.     efrecover 511cdat516"e=sta1167ion(>119uot;need to fix LEB3&"lin39 class="sr1122ion, lhreeeeeee3eeeee39eloff_ts/recover 511bufi 0,
in2_ts/recover 511 4453    113119scan_      b       3buferr     113" >119ref">snod-><3 h" n39 name="L538">>             2sref">cref="+code=buf"L#L516" id="1234ion, 11 code=ubifsdLE511" i3="L5139e="L471"add_iswitch                 key_typ>sleb,
ecov                ame="L471">in2_ts/recover 511119 class="co6ment">/*36et t39  eef="+code=casever 511;
119" class="sref_unmap3/a>(<39n="+code=offs" cref="                 "=er.     ass*um" class="er.     efree=sta1167ion119N(in2_ts/recover 511err120be="L11" id="L511a4448" c40>ndpt %d&" cref="else=s="sr1221ion(>120uot;need to f" idL549" i540code=buf"  id=" 538cref="+code=buf"L516"hunry.c#L541" id="s="sre="e=utruct 6ode=ls="sre=" clasin2_ts/recover 511err 548124id>120ame67" idL509" i5014 clas40code=buf"  id="dump_lllllllll                    ref="+code=buf"L516"ass="sr1221ioncref="+code=buf"L516"xef">len -)
io_muf=0+11" id="L511a4548" class="hunmaps/recover 51new>cdatef="+code=buf"inew>cdat516" id="1245ionerr    124< >119ref">snod-><465" c40 name="L538"> 538>>>>>>>>me="LINV" class="sref">cref="+code=buf"L516"xef">len -)
io_m          6   int err    124119ifs/recoverrrrrrrrr4="L4740" ss="lin="+code=offs" cref="}"else=s="sr1221ionc, in2_ts/recover 511cdatef="+code=buf"inew>cdat516", 0, 1e id="1245ionerr    124119 class="co6ment">/*4name=40  eef="+code=buf"ref=================                         @buf: bu5fer to check(120class href6ifs/reco46ry.c40nss="line" name="LINV" cref="}id="1234ion, 1210ref="fs/ubifh" nam4="L474">ndpt %d&" cref="}id="1234ion, , 1212ode=ubifsdLEef="fs4ubifs41code=buf"  idcasever 5111213s/ubifs/reco="fse"4name=41  "ef="+code=buf"ref=" class="sref">cref="+code=buf"L516"hunry.c#L541" id="s="sre="e=utruct 6ode=ls="sre=" clasin2_ts/recover 511err121ref">snod-><4 "lin41 name="L538"> 538                    ref="+code=buf"L516"ass="sr1221ion121me="L11" id="L511a4448" c41" ss="lin="+code=offs" cref="                   new>cdatef="+code=buf"inew>cdat516"ptg" c" class="sref">cref="+code=buf"L516"xef">len -)
io_mef="a href6ifs/recov6ry.c#L516"ck(121code=ubifsdLEB Ŷd"lin41e="L471"add_iu24="inf>>>>>>>>me="LINV" class="sref">cref="+code=buf"L516"xef">len -)
io_mef="a href6ifs/recov6ry.c#L516"hunmaps/recover 51new>cdatef="+code=buf"inew>cdat516" id="1245ionerr 5124"+>121fs/ubifs/recovegrou47    41  eef="+code=buf"ref=}"else=s="sr1221ionc, in2_ts/recover 511cdatef="+code=buf"inew>cdat516", 0e id="1245ionerr121N(122 class="sref"="fse"4name=42>ndpt %d&" cref="u24="inffffff ff+code=c" class="srefa href6ifs/recov6ry.c#L516" id="1234ion, sno124=s>122ffs
, lhreeeeeee4e="fs42code=buf"  id="dump_lbreak id="1234ion, 122scan_ #L511"       4     423ode=buf"  idcasever 511snod-><4 ss="42 name="L538"> 538" class="sref">cref="+code=buf"L516"hunry.c#L541" id="s="sre="e=utruct 6ode=ls="sre=" clasin2_ts/recover 511err;
122ifs/recoverrr511" i4="L5142" ss="lin="+code=offs                    ref="+code=buf"L516"aid="1245ionerr122unmap11" id="L511a4448" c42e="L471"add_iu24="infoclode=c" class="sref">cref="+code=buf"L516"xef">len -)
io_mef="a href6ifs/recov6ry.c#L516"hunmaps/recover 51new>cdatef="+code=buf"inew>cdat516" id="1245ionerr1227(122very.c#L546" id="L546ss="42cref="+code=c.c#L516" id="1237ionerr)
124ba>123be="L11" id="L511a4448" c4ass="lline"1219ion     124me>1232class="sref"="fse"4name=43=*l@d_me=":amaximumame=" baref="+code=sta1158ionrlfix_ist_6in_plac>-trh6hreint -on6 6/
6a href="fs/ubif216tion = bufe=utruct 6ode=ls=x_ist_6in_plac> classinfonodes" class="s" id="infoclass*um" class="sref">lnum, in2_ts/rec,c="sref">buferr;
123)11" id="L511a4448" c438de=bs="sr1221ion123ecovegroupL4:67"n-z4roula43ode=buf"rb_n21"="sref">bufrb_n2sref">lnoery.cref="+code=buf"sref">lnoery.c clas err124ecovegroupL4:67"n-z4roula44>ndpt %d&unsignedccharn err     124me>124.c#Lef="f="f01loff_ts/recoun    des" class="s" id="inkeyass*um" class="sref">keyefa>,er 511err     124">>124ame67" idL509" i5014 clas44 name="L538">>             2sref">cref="+code=buf"L#L516"cover 511errerr124overy.c#L465" id="L465" c44 name="L538">des" class="s" i>  32cref="+code=buf"ii>  32crifs/recovery.ci_me="crL541" class="ljhercss=" id="1245ionerr124me="L466"> 466<4pan c44ss="line"1216ion124thin ropifs_in7" id4birop44e="L471"add_i_me=":amaximumame=" bare Losts 6   i int 124a69"" id="L501" cla4s="li44c classan>erts/recover 511in2_ts/recovecovery.c#L541" id="keyass*um" class="keyefa>lc" class="sref">cref="+code=buf"L516"xef">len -)
io_mucode=offs" classloff_ts/ree id="1245ionerr;
124" cla = tnc_losts ass*um" class="sref">tnc_losts  clasin2_ts/recovecovery.c#L541" id="keyass*um" class="keyefa>lc" class="sref">e="e=utruct 6ode=le=" claovecovery.c#L541" id="e.ode=offs" classlolf_ts/reovecovery.c#L541" id="off     6   int err124very.c#L546"  = (err     1241251ref="fs/ubifh" nam4="L4745code=buf"  id_me=":amaximumame=" bare="+code=sta112tion1252ode=ubifsdLEef="fs4ubifs45=*l@d_me=":amaximumame=" basssssssss* If    int 123ref="fs/ubifh"line"4name=45"* @exists: indicateL4whe/a>ssssssss* was calcul+ 215t 51  =  -)
io_muf=0+11" id="L511a4548" class="hunmaps/recover 51le64_to_cpuass*um" class="ee64_to_cpu claserrerr<214am>252unmap11" id="L511a4448" c45overyw4sref">len -)
io_muf=0+11" id="L511a4548" class="hreco            2sref ref="+code=buf"L516"xef">len -)
io_mef="a href6ifs/recov6ry.c#L516"ck(254a69"" id="L501" cla4s="li45  eef="+code=buf"ref=.c#L516" id="1237ionerr)
;
256veryy.c#L465" id="o4 irop45n="+code=offs_me=":amaximumame=" bare Reast 6  LEB<*f="+code=sta112tion215ecovegroupL4:67"n-z4roula45cref="+code=c" class="sref">c, leb_retdass*um" class="sref">leb_retd clasin2_ts/recover 511err216ecovegroupL4:67"n-z4roula46>ndpt %d&                         @buf: bu5fer to check(err 548214f=>216ame67" idL509" i5014 clas462="+code=offs_me=":amaximumame=" bare Chang 6   int err     214ad>216overy.c#L465" id="L465" c46 name="L538">des" class="s" e="e=utruct 6ode=le=" cla/recover 511len -)
io_mef="a href6ifs/recov6ry.c#L516"c id="1245ionerr216me="sL  opifiline" 4ame="46" ss="lin="+clen -)
io_mee ass*um" class="ee efa>hunmaps/recover 51le32cro_cpuass*um" class="ee32cro_cpu claserrerr<214crL541" class="ljhercss="hunry.c#L541" id="Lrcme>1232class="ljherc3=*l@ds,
err116a69"" id="L501" cla4s="li46c classan>erts/recover 511err;
116veryy.c#L465" id="o4 irop46n="+code=offs_me=":amaximumame=" bare Work out wn1r>cnt -istce begins<*f="+code=sta112tion116ecovegroupL4:67"n-z4roula46cref="+code=c" class="sref">1" class="llass=pserr117ecovegroupL4:67"n-z4roula47>in2_ts/recover 511errl>117.c#Lef="f="f01loff_ts/reco_eode==>buf 548214am>117ame67" idL509" i5014 clas47code=buf"  id="dump_lpropss/recover ee ass*um" class="ee efa> -  1 id="1245ionerr117f="fs/ubifs/recover4.c#L447  "ef="+code=ver 511err    214ef>117overy.c#L465" id="L465" c474="+code=offs_me=":amaximumame=" bare Atomi5ally/wri <6   ifixed LEB     214me>117me="L466"> 466<4pan c47" ss="lin="+clen -)
io_mc, leb_chang ass*um" class="sref">leb_chang  clasin2_ts/recover 511, 0,
err117thin ropifs_in7" id4birop47overyw4sref">len -)
io_m      @buf: bu5fer to check(11e clasiline" name="L471"> 47  eef="+code=buf"ref=gotover 511err;
(>11e" clatruct 6ode=lis4_6mpt47h classan>erts/recover 511" int 
117very.c#L546"  = len -)
io_mucode=offs" classloff_ts/recover 511cref="+code=buf"L516"xef">len -)
io_mef="a href6ifs/recov6ry.c#L516"c id="1245ionerr114ov>11co class="sref = 11c   1183ref="fs/ubifh" nam4="L4748  "ef="+code=ver 511war ass*um" class="sref">war  clas" int     214fs>11covery       @buf: b45fer 48 name="L538"> 538>>>(unsignedclong)ver 511len -)
io_mucode=offs" classloff_ts/recover 511len -)
io_muf=0+11" id="L511a4548" class="lc" class="sref">cref="+code=buf"L516"xef">len -)
io_mef="a href6ifs/recov6ry.c#L516"lc" class="sref">c     @buf: bu5fer to chec id="1237ionerr)
     214vr>1185ref="fs/ubifh" nam4="L47485in2_ts/recov.c#L516" class="sref">c     @buf: bu5fer to che id="1237ionerr)
118code=ubifsdLE="fs/u4ifs/r48"* @iline"1219ion118fs/ubifs/recovegrou47ss="48"* bfine"1219ion118N( 500L455e c_ist_-trre55e c>f="+code= f="+code=sta1159ion114em>119 class="sref"="fse"4name=49h* @i 0,: in21"a 0,bst         laass objecs="comment"> 6/
6a href="fs/ubif216tion = (>119uot;need to fix LEB4&"lin49s*l@i_me=":ame=" ">cin21"    ef="fs/ubif216tion = 119s="sref">lhreeeeeee4eeeee49=*l@d_me=":amaximumame=" bassdThis  un      atmenpts   6h6hrf="+code=  di 6/ee="ciefc d=" ifiedcby "heef="fs/ubif216tion =     114119scan_      b       4rl'sref">L455e c_ist_6accum()'  un     f="+code=sta1159ion    214" >119ref">snod-><4 h" n49s*l@d_me=":amaximumame=" bass="+code=sta1159ion     214am>119ifs/recoverrrrrrrrr4+ss="49s* @exists: indicateL4whe/a>r This  un     s_eode= sfcode=0 on6successc fsta negts vecode=ofrefa on6f="+code=sta1159ion11 code=ubifsdLE511" i4="L5149"* @in21": in21"a="fpifnedainf="+code=sta112tion119 class="co6ment">/*46et t49  eeff"datelrnd refnor  sref">L455e c_ist_ass*um" class="sref">L455e c_ist_ classinfonodes" class="s" id="infoclass*um" class="sref">lnum, in2_ts/rece=sta1167ion;
119" class="sref_unmap4/a>(<498de=bs="sr1221ion119N(bufrb_n21"ery.cref="+code=buf"rb="sref">bu*>buf 4455href="fs125ti>120be="L11" id="L511a4548" c50ss="line"1231ion(>120uot;need to f" idL559" i550>loff_ts/reco_eode==>buf 548125id>120ame67" idL509" i5015 clas50code=buf"  id="dump_l="sref">buferr    125120f="fs/ubifs/recover5.c#L450  "ef="+code=buf"ref=>             2sref">cref="+code=buf"L#L516" id="1234ion,     125< >119ref">snod-><565" c50 nameid="1234ion,     125119ifs/recoverrrrrrrrr5="L4750" ss="lin="+code=offs, bufrb_n2="_ent37ode=utruct 6ode=list_6mpty" clacover 511 =     12511 code=ubifsdLE511" i5ubifs50e="L471"add_iu24="inflencref="+code=buf"L516"xef">len -)
io_m          6   int /*5name=50  eef="+code=buf"ref=========un    des" class="s" id="inkeyass*um" class="sref">keyefa>,er 511err120)
err119N(in2_ts/recovecovery.c#L541" id="keyass*um" class="keyefa>lc" class="sref">cref="+code=buf"L516"xef">len -)
io_mucode=offs" classloff_ts/ree id="1245ionerr1210ref="fs/ubifh" nam5="L475">ndpt %d&" cref="ode=offs, tnc_looku1" class="llass=sref">tnc_looku1 clasin2_ts/recovecovery.c#L541" id="keyass*um" class="keyefa>lc" class="sref">L541" class="ljhefsss/recover 511err1211ref="fs/ubifh" nam5="L4751code=buf"  id=" 538, , ,
1212ode=ubifsdLEef="fs5ubifs51code=buf"  id="dump_lllllllllllllllll.c#L516" class="sref">c     @buf: bu5fer to che id="1237ionerr)
, ,
121ref">snod-><5 "lin51 name="L538"> 538" cref="ode=offs121me="L11" id="L511a4548" c51" ss="lin="+code=offs" cref="ode=offs"rem5e     in121code=ubifsdLEB ŷd"lin51e="L471"add_iu24="inf>>>>>>>>me="LINVVVVVVVVVVV(unsignedclong)ver 511len -)
io_mucode=offs" classloff_ts/ree id="1245ionerr    125"+>121fs/ubifs/recovegrou57    51  eef="+code=buf"ref=" cref="ode=offs, tnc_eem5e re="" class="llass=sref">tnc_eem5e re=" clasin2_ts/recover 511len -)
io_mucode=offs" classloff_ts/ree id="1245ionerrl>121)
 -)
io_m      @buf: bu5fer to check(c     @buf: bu5fer to che id="1237ionerr)
122 class="sref"="fse"5name=52>ndpt %d&" cref="u24="inf}"else=s="sr1221ionsno125=s>122ffs
bufrb_n2sref">lnoery.cref="+code=buf"sref">lnoery.c clas err122s="sref">lhreeeeeee5e="fs52code=id="1245ionerr122scan_ #L511"       5     52  "ef="+code=buf"ref=u24="infffffffff" class="sref">cref="+code=buf"L516"xef">len -)
io_m          6   int err122ref">snod-><5 ss="52 name="L538"> 538u24="infffffffff" class="sref">cref="+code=buf"L516"xef">len -)
io_muf=0+11" id="L511a4548" class="hunmaps/recover 51le64_to_cpuass*um" class="ee64_to_cpu claserr;
122ifs/recoverrr511" i5="L5152" ss="lin="+code=offsu24="inf}id="1245ionerr122unmap11" id="L511a4548" c52e="L471"add_iu24="inf}id="1245ionerr    125&g>1227(len -)
io_m          6   int len -)
io_muf=0+11" id="L511a4548" class="h&l" c" class="sref">cref="+code=buf"L516"xef">len -)
io_mef="a href6ifs/recov6ry.c#L516"c=s="sr1221ion122very.c#L546" id="L556ss="52nss="line" name="LINV" cref="                   L541" class="ljhefsss/recover 511ndpt %d&" cref="u24="inffffff ffcref="+code=buf"L211121me="L11" id="L511a44="L4743515" id="11=2ionbufrb_n2sref">lnoery.cref="+code=buf"sref">lias 122ifs/recoverrr511" i4name=43=*5@d_me=":amaximumame=" bar5f="+c53l.c#L516" class="sref">c     @buf: buref="+code=buf"sref">lnoery.c c 122ifs/recoverrr511" i4     52  "@exists: indicateL4whe/a>5lfix_5353    213ad>216overy.c#L465" id="545fer 43s*ef6ifs/rec2 id="1245ionerrcclass="ljhefsss/recover 511122ifs/recoverrr511" i4n="L5152" ss="lin="+code=offsu24="inr @ta>f="+5ode=  lnumrm    6   int <56hree53id4birop44e="L471"add_i_me=":amaximum5nf="+code=5ta112tionlen -)
io_mef="a href6ifs/recov6ry.c#L516"unry.c#L541"  len -)
io_mucode=offs" cl=snod" class="5f7a> vclos1 code=ubifsdLE5vclos1" classloff_ts/ree id="1245ionerrl>121)
e=utruct 6ode=ls5x_ist53er to check(122ifs/recoverrr511" i4n=offs51nss="line" name="LINV" cref=d" class="5"line" n124d=>123ecovegro5pL4:653ifs/recov6ry.c#L516" id="1234ion, 122ifs/recoverrr511" i4n="L5151n="+code=offs" cref="u24="in_          ">lnoery.cref="+code=buf"5ref">5noery.L5151n="+code=offs" cref="u24="incref="+code;
122ifs/recoverrr511" i4 e clas122ifs/recoverrr511" i4n="L5151n="+code=offs" cref="u24="ins="s" id="5nkeyass*um" class="sref">5eyefa54cref="+code=buf"sref">lias 122ifs/recoverrr511" i4ncref="+code=buf"L516"xef">len -)
io_mef="a href6ifs/recov6ry.c#L516"c=s="sr1221ion122very.c#L546" id="L556ss="52nss="line" name="LINV" cref=sref">cref5"+code=buf"L#L516"cover 551lnoery.c c 1ode=lucat code=d:code=dint 
117very.c#L546"  = len -)
io_m          6   innnnnnnnnnnnnnnnnnncode=offs" classloff_ts/recover 511len -)
io_muf=0+11" id="L5f="47nss="line" name="LINV" (uns5e11ref=55f""+code=buf"ii>  32crifs/r5cover54r 51116 is>122ifs/recoverrr511" i4ncref="+code=buf"L516"xef">len -)
io_mef="a href/recov6ry.c#L516"c id="1245ionerr114ov>11co class="sref = 124thin ropi5s_in754de=ldbg_rcvod clas16 is>122ifs/recoverrr511" i4ncref="+code=buf"L516"xef">len -)
io_mef="a hrefe claserr114ov>11co class="sref = len -)
io_de;
122ifs/recoverrr511" i4 f=55f">errlen -)
io_muef="a hrefe claserr114ov>11co class="sref = (<> -)
io_de;
122ifs/recoverrr511" i4 f=55f">errlen -)
io_msynced_"xef">hrefe claserr114ov>11co class="sref = 122ifs/recoverrr511" i4ne clas122ifs/recoverrr511" i4name=43=*5@d_me=":amaximumame=" bar          5buf: bu5fer to check120ame67" idL509" i5015ame=43=*5@d_me=":amaximumame=" bar 511>>>>>>>>>>>>>>>>>>>>>>>>cont1" eame=43=*5@d_me=":amaximumame=" bar ="s" id="5+code=sta112tionlias lnoery.c c 122ifs/recoverrr511" i4n="L5151n="+code=offs" cref="u24="inssssssss* 5as calcul+ len -)
io_m        #L5115 ref=52code=buf"  id=" 538123overy L511a44="L4743515" id="11=2iontnc_eem5e re=" claslnum, len -)
io_mucode=offs" classloff_ts/ree id="1245ionlenerr)
;
256veryy.c#L465""""""""""""""""""""""""">)
122 class="sref"="fse"5name=52>ndpt %d&" cref="u24="inme=" bare 5east 6  LEB<*f="+code=sta512tio55er to check(122ifs/recoverrr511" i4n=me=52>ndpt %d&" cref="u24="inm         5ref=" class122ifs/recoverrr511" i4n="L5152" ss="lin="+code=offsu24="in          5buf: bu5fer to checksno125=s>122ffs
#L5152" ss="lin="+code=offsu24="in sssssss* 5hang 6   int len -)
io_mlas120ame67" idL509" i5015ame=43=*5@d_me=":amaximumame=" bare="e=utruc5 6ode=le=" cla/recover 515 4455href="fs125ti>120be="L11" id="L511a4548" c50ss="line"1231ion 4455kffs125ti>120be="L11kffs1ne=it 6ode=list_516"ass="sr1221ion1232clas#L5152" ss="lin="+code=offsu24="in  id="12375 6ode=le=" cla/recover 515cnt -is=line"4name=48516" id="11=2ion


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