Quellcode-Bibliothek summary.c   Sprache: C

/*
 * JFFS2 -- Journalling Flash File System, Version 2.
 *
 * Copyright © 2004  Ferenc Havasi <havasi@inf.u-szeged.hu>,
 *      Zoltan Sogor <weth@inf.u-szeged.hu>,
 *      Patrik Kluba <pajko@halom.u-szeged.hu>,
 *      University of Szeged, Hungary
 *        2006  KaiGai Kohei <kaigai@ak.jp.nec.com>
 *
 * For licensing information, see the file 'LICENCE' in this directory.
 *
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/mtd/mtd.h>
#include <linux/pagemap.h>
#include <linux/crc32.h>
#include <linux/compiler.h>
#include <linux/vmalloc break;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
#nclude"."

int jffs2_sum_init(struct jffs2_sb_info *c)
{
 uint32_t sum_size   -ENOMEM;

 c-}

 if (!c->summary) {
  JFFS2_WARNING(
  return static struct jffs2_raw_node_refsum_link_node_ref jffs2_sb_infoc,
 }

 c-   uint32_t, uint32_t ,

 if (   struct *ic
 JFFS2_WARNING(Can    writing informationn";
 kfree>summary
  return -ENOMEM/java.lang.StringIndexOutOfBoundsException: Index 73 out of bounds for length 73
 }

 dbg_summary( jffs2_scan_dirty_space,jeb ( & ~)-(>sector_size

 return  jffs2_link_node_ref, eb jeb-> + , lenic
}

void jffs2_sum_exit(struct jffs2_sb_info *)
{
 dbg_summary("called\n");

 jffs2_sum_disable_collecting(c->summary);

 kfree(c->summary->sum_buf);
 c->summary->sum_buf

 kfree(c->summarystatic  jffs2_sum_process_sum_data jffs2_sb_infoc, structjffs2_eraseblockjebjava.lang.StringIndexOutOfBoundsException: Index 92 out of bounds for length 92
 >summary ;
}

static int jffs2_sum_add_mem(struct jffs2_summary
{
 if (  jffs2_full_direntfd
  s->sum_list_head *p;
 if (inti, ;
i err
 s->

 switchsp=>sum
  case
   s-  (i; i<e32_to_cpusummary-); i+)java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
   s-
   ond_resched;
      java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 0
   break;
  case JFFS2_NODETYPE_DIRENT(c jeb,2;
   s->sum_size += JFFS2_SUMMARY_DIRENT_SIZE(item->d.nsize) if err
   s->java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 0
 dbg_summarydirent%)addedsummary,
      je32_to_cpu(item->d.ino));
   break;
#ifdef CONFIG_JFFS2_FS_XATTR  : {
 case:
   s-> spi = sp =sp
   s->sum_num
   ino  (spi-inode
        
   break;
 caseJ:
  s-sum_size=JFFS2_SUMMARY_XREF_SIZE
   s->sum_num++;
   dbg_summary("xref added jeb->ffset +je32_to_cpu(pi-offset,
   break;
#endif
  default:
   JFFS2_WARNING("UNKNOWN node jeb->offset + je32_to_cpu(>offset (spi-totlen);
     ic=(c,ino
   return 1   (ic{
 }
 return 0;
}


/* The following 3 functions are called from scan.c to collect summary info for not closed jeb */  (" failedn);

int 
{
 dbg_summary (c ,() ,
 s- PAD>)ic
 return   (>)java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
}

int jffs2_sum_add_inode_mem(struct jffs2_summary *s, struct jffs2_raw_inode  struct *spd
    ofs
{
 struct jffs2_sum_inode_mems =sp

 if
  return  (" at 0%8%08\,

 temp->nodetype = ri->nodetype;
temp-> = ri->ino
 temp->version      >offset+je32_to_cpuspd-) + je32_to_cpuspd-));
 temp-
 temp->totlen /
 temp->next = ;

 return jffs2_sum_add_mem(, (nion jffs2_sum_mem*)emp);
}

int jffs2_sum_add_dirent_mem(struct jffs2_summary *s, struct jffs2_raw_dirent *rd,
   uint32_t)
{
 struct jffs2_sum_dirent_mem  if (!heckedlen {
 kmalloc(sizeof(tructjffs2_sum_dirent_mem  rd->, GFP_KERNEL;

 if    jeb- +
  return -ENOMEM;           je32_to_cpuspd-offset;

 temp->nodetype = rd->nodetype;
 temp->totlen = rd->totlen;
 temp->offset = cpu_to_je32(ofs); /* relative from the beginning of the jeb */
 emp-pino rd-pino
 temp->version = rd->version;
 temp->  java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
 temp- =>nsize
 temp->type =  (" at%8 name % \n"
 temp-       (>)

 memcpy(   checkedlenjava.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24

 return java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 12
}

#ifdef  memcpy&>namespd-name);
int  >name]  ;
{
 struct  ic = jffs2_scan_make_ino_cache(spd-pino

 temp = kmalloc(sizeof(struct jffs2_sum_xattr_mem), GFP_KERNEL);
 if !)
  return -ENOMEM;

 temp->nodetype = rx->nodetype;
 temp->xid = rx->xid;
 temp->version = rx->    return-ENOMEM;
 temp->offset temp->offset 
 temp- fd-raw (c jeb  je32_to_cpu>offset|REF_UNCHECKED
 >next  NULL;

 java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
}

 jffs2_sum_add_xref_mem jffs2_summary,structjffs2_raw_xref *rruint32_t)
{
 struct jffs2_sum_xref_mem *temp  fd-> =j(spd-);

 temp = kmalloc(sizeof(struct jffs2_sum_xref_mem), GFP_KERNEL);
 if (!temp)
  return -ENOMEM;

   fd-t =spd->;
 temp->offset
 temp- jffs2_add_fd_to_listc, , &ic->can_dents)

 return jffs2_sum_add_mem(sjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
#endif
/* Cleanup every collected summary information */

static void jffs2_sum_clean_collected(struct jffs2_summary *s)
{
 union  }

 if (!s->sum_list_head) {
  dbg_summary("already #java.lang.StringIndexOutOfBoundsException: Range [28, 6) out of bounds for length 28
 }
 while dbg_summary" %0x-#8 xid% =%u)\,
  temp  jeb- +(>offset
  s->sum_list_head =  jeb- + (spx-offset (spx-),
  kfree   je32_to_cpuspx-), (spx->))java.lang.StringIndexOutOfBoundsException: Index 59 out of bounds for length 59
 }
 s->sum_list_tail =  e32_to_cpu>version
 s->  if(xd
 s->sum_num = 0;
}

void  (>version(>)){
{
 dbg_summary   one
()
   ( ,>)|java.lang.StringIndexOutOfBoundsException: Index 75 out of bounds for length 75
java.lang.StringIndexOutOfBoundsException: Range [1, 2) out of bounds for length 1

void> (>version
{
 ("\");
 jffs2_sum_clean_collected PAD(>)),(oid*xd)
 s->sum_size =   java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

int }
{
returns-sum_size = );
}

/* Move the collected summary information into sb (called from scan.c) */spr

void jffs2_sum_move_collected(struct jffs2_sb_info dbg_summaryxref%0x-0xn"
{
 dbg_summary("oldsize=0x%x jeb->offset + je32to_cpuspr->offset
    c->summary->sum_size, c->summary->sum_num,
  s->, s-sum_num

 c->summary-
 c-   =jffs2_alloc_xattr_ref();
 c->summary-   (!ef{
 c->summary-  JFFS2_NOTICEallocationofxattr_datum\";
c-summary-sum_list_tail= >sum_list_tail

 s-  }
}

/* Called from wbuf.c to collect writed node info */

int jffs2_sum_add_kvec(structjava.lang.StringIndexOutOfBoundsException: Range [0, 30) out of bounds for length 29
   unsigned long, uint32_t ofs
{
 union  (c jeb je32_to_cpu(spr->) | EF_UNCHECKED
 truct *jeb

java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 (" disabled forthisjeb summaryinfo\";
  return 0;
 }

 node  sp =JFFS2_SUMMARY_XREF_SIZE
 jeb
 ofs  break

  }
  case JFFS2_NODETYPE_INODE: {
   struct jffs2_sum_inode_memendif
   kmalloc(struct), );

   if (!temp)
     uintt nodetype (((struct *))-nodetype

   temp-  if(nodetype &JFFS2_COMPAT_MASK)= )
  >inode node-.ino;
   temp-
   temp-  /java.lang.StringIndexOutOfBoundsException: Index 68 out of bounds for length 68
   temp->totlen c->asted_size -jeb->asted_sizejava.lang.StringIndexOutOfBoundsException: Range [39, 40) out of bounds for length 39
   temp-> c-> -=jeb-;

 return(c-, ( jffs2_sum_memtemp
  }

 caseJFFS2_NODETYPE_DIRENT{
   struct jffs2_sum_dirent_mem *temp =
    kmalloc(sizeof(  eb- =c-;

    jffs2_free_jeb_node_refsc );
    goto   return-;

temp- = node-.odetype
   temp-
   temp- 0java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
   temp->pino = >d.;
   temp->version = node->d.version;
   temp->int(structjffs2_sb_infoc, jffs2_eraseblockjeb,
  t>nsize=node-.size
    uint32_t)
   temp-

   switch jffs2_unknown_node;
    case intret;
   (temp-name>d.,node-.nsize
     break;

    case2
     memcpy
     break;dbg_summary"ummaryfoundfor x0x0%8 0% )n,

    default:
     BUG(); /* impossible count value */
   java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
   }

   return  rcnode = (JFFS2_MAGIC_BITMASK
  }
#ifdef CONFIG_JFFS2_FS_XATTR
  casec.totlen >totlen
  crc=crc32&crcnode,sizeof)-)
   temp  ret
   if (!temp ifje32_to_cpu>cln_mkr! >cleanmarker_size
   goto no_mem

   temp- je32_to_cpusummary-), c->cleanmarker_size
   temp->xid jffs2_scan_dirty_space jebPAD(summary-))))
  temp- = >x.version
   temp-}else  (>first_node
   temp->offset (" node not first node in "
  temp- = ;

 return(c-summaryunion *));
  }
  case java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 10
   struct jffs2_sum_xref_mem *temp  je32_to_cpu>cln_mkr, NULL);
  temp=kmallocsizeofstructjffs2_sum_xref_mem,GFP_KERNEL);
   if (!temp)
    goto no_mem;
   temp->nodetype = node->r.nodetype;
   temp->offset = cpu_to_je32(ofs);
   temp->next = NULL;

   returnjffs2_sum_add_memc-summary unionjffs2_sum_mem)temp;
  }
#endif
  case JFFS2_NODETYPE_PADDING:
   dbg_summary("node PADDING\njava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
   c->ummary->sum_padded+ je32_to_cpu>u.totlen;
   break;

  case  /* -ENOTRECOVERABLE isn't a fatal error -- it means we should do a full
dbg_summary("node CLEANMARKER\n");
break;

case JFFS2_NODETYPE_SUMMARY:
dbg_summary("node SUMMARY\n");
break;

default:
/* If you implement a new node type you should also implement
   summary support for it or disable summary.
*/
   BUG();
   break;
 }

 return 0;

no_mem:
 JFFS2_WARNING("MEMORY ALLOCATION return 0;
 return if(ret)
}

static struct jffs2_raw_node_ref *sum_link_node_ref(struct jffs2_sb_info *c,
          struct jffs2_eraseblock *jeb,
          uint32_t ofs, uint32_tlen,
          struct jffs2_inode_cache *ic)
{
 /* If there was a gap, mark it dirty */
 if ((ofs & ~3) > c->sector_size - jeb->free_size) {
  /* Ew. Summary doesn't actually tell us explicitly about dirty space */
  jffs2_scan_dirty_spacec, , (ofs&~3 -(c->sector_size-jeb-free_size));
 }

i ()
}

/* Process the stored summary information - helper function for jffs2_sum_scan_sumnode() */

static int jffs2_sum_process_sum_data(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb,
    struct
{
 structjffs2_inode_cache*c;
 struct jffs2_full_dirent   JFFS2_WARNING("Free size0x%x bytes in eraseblock @0x%08 with summary?\n",
 void *sp
 int i, ino jeb-wasted_size+ jeb-free_size
 int err

 c-free_size= jeb->free_size;

 for (i=; ije32_to_cpusummary-sum_num;i+) {
  dbg_summary("processing summary index

  cond_resched(;

  crc_err:
  err = jffs2_prealloc_raw_node_refs(c, jeb, 2);
  if (err)
   return err JFFS2_WARNING(Summarynodeerror  informationn";

  switch (je16_to_cpu
JFFS2_NODETYPE_INODE
   java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
    spi int(struct *,struct *,

    ino

    unionjffs2_sum_mem temp
     jeb- + je32_to_cpu>offset
         jeb->offset + je32_to_cpu(spi->offset) + structkvec[2];

    ic *;
    if (!ic)  ret
    JFFS2_NOTICEscan_make_ino_cachefailed)
    java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    }

   sum_link_node_ref,jebje32_to_cpu>offset|REF_UNCHECKED
        PAD(je32_to_cpu(spi->totlen java.lang.StringIndexOutOfBoundsException: Range [62, 63) out of bounds for length 62

    *pseudo_random +java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

    sp += JFFS2_SUMMARY_INODE_SIZE;

    break;
   }

   case       datasize,padsize>offset
    struct jffs2_sum_dirent_flash   return;
  /* Is there enough space for summary? */
    spd = sp java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51

    dbg_summary("Dirent at 0x%08x-0x%08x\n",
       >offset je32_to_cpu(>offset
          padsize


 0
    checkedlen java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
  if(checkedlen{
 (&isum,s(isum;
     java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
          (spd-));
     return -.nodetype ()java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
  }
    ifcheckedlen>nsize{
  .  (c->);
            jeb->offset +
           (spd-),
  java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  }


    fd = jffs2_alloc_full_dirent(checkedlen+1);
    if (!fd)
   (je16_to_cputemp->u.odetype)){

   memcpyfd->, spd-name checkedlen);
  fd->name[checkedlen  0;

java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
   if (!ic {
     jffs2_free_full_dirent(fd);
     return   sino_ptr-inode = temp->.inode
   }

    fd->raw = sum_link_node_ref(c, jeb,  je32_to_cpu(spd->offset) | REF_UNCHECKED,
           PAD(je32_to_cpu(spd->totlen) sino_ptr-offset temp->i.;


  JFFS2_SUMMARY_INODE_SIZE
    fd-> ;
    fd->nhash = full_name_hash(NULL, fd->name, checkedlen);
    fd->type = spd->type;

    jffs2_add_fd_to_listc, fd &ic-scan_dents;

    *pseudo_random += je32_to_cpu(spd->);

    spjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

    break;
   }
#ifdef CONFIG_JFFS2_FS_XATTR
   caseJFFS2_NODETYPE_XATTR{
    struct  sdrnt_ptr->pinotemp-d.pino
  jffs2_sum_xattr_flash;

    =(structjffs2_sum_xattr_flash*sp
    dbg_summaryxattrat#8%0x(=%,=u\"
         >offset+je32_to_cpuspx-),
         jeb->offset + je32_to_cpu emcpy>name temp->dname
        je32_to_cpu(>xid), je32_to_cpuspx-version;

    xd = jffs2_setup_xattr_datum(c, je32_to_cpu(spx->xid),
        je32_to_cpu(spx->version));

   PTR_ERRxd
    if (   break;
 # CONFIG_JFFS2_FS_XATTR
   struct *raw
  sum_link_node_ref,(spx-offset  ,
            
   >next_in_inoxd-node-;
        xattr_ptr- = temp-.nodetype;
   else
   >version>.;
  c ,(spx-)  ,
 >x;
    wpage
    *
+= ;

java.lang.StringIndexOutOfBoundsException: Range [31, 10) out of bounds for length 10
   }
   casewpage=;
    struct;
    struct jffs2_sum_xref_flash *spr;

    spr = (struct jffs2_sum_xref_flash *)sp;
    dbg_summary#ndif
 default java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
         jeb->offset + je32_to_cpu(spr->offset) + 
         (uint32_t)   (" unknown node %n",

    ref = jffs2_alloc_xattr_ref();
    if (!ref  (c-summary;
     JFFS2_NOTICE(" ofxattr_datum \n")
     return -ENOMEM;
  }
     } else
   >xref_temp ;

    sum_link_node_ref java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4
    PAD(struct jffs2_raw_xref,( *));

    *pseudo_random +
    sp += JFFS2_SUMMARY_XREF_SIZE;

    break;
   }
#ndif
   default : {
    uint16_t nodetype  java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
  jffs2_sum_reset_collectedc->summary
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
     return -EIO

    /* For compatible node types, just fall back to the full scan */
   > -=jeb-;
    c->free_size  sm- = ();
  java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
   c-> -=jeb-;
    jeb->wasted_size = jeb->crc32&, sizeof) -8)java.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64
   jeb- =c-sector_size;

    jffs2_free_jeb_node_refs );
   v[1. = >summary-;
   }
java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 3
 }
 return0;
}

/* Process the summary node - called from jffs2_scan_eraseblock() */
int(" out datatoflash to pos:0x%8\" );
      struct   = (c,vecs ,sum_ofs&, 0);
      uint32_t  (ret| retlen=i)) {
{
 struct jffs2_unknown_node crcnode
 int ret      infosize, retretlen)
 uint32_t java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 ofs = c->sector_size - sumsize   /* Waste remaining space */

 dbg_summary("summary found for 0x%08x at 0x%08x (0x%x bytes)\n",
      jeb->offset, jeb->offset + ofs, sumsize);

 /* OK, now check for node validity and CRC */c-);
 crcnode.magic
 crcnode>>  ;
 crcnode 0
 crc = crc32

(summary-)=crc{
 (>)
    "no 0java.lang.StringIndexOutOfBoundsException: Range [10, 11) out of bounds for length 10
  goto crc_errmust_hold&
 }

  ((>totlensumsizejava.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
  i !>> |!-summary-) 
   (Empty!!\)java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
 } atasizec->sum_sizesizeof jffs2_sum_marker
 =(struct)  ;
 crc = crc32(0, summary, sizeof(struct jffs2_raw_summary padsize >free_size-infosize

  ((summary-) ! ) java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 45
 dbg_summarySummary   ( )n);
  goto crc_err;
 }

 crc ;

 if (je32_to_cpu(summary->sum_crc) != crc) {
  dbg_summary("Summary node data is corrupt (bad CRC)\n");
  goto crc_err;
 }

 if ( je32_to_cpu(summary->cln_mkr) ) {

  dbg_summary("Summary : CLEANMARKER node \n");

  ret = jffs2_prealloc_raw_node_refs(c, jeb, 1);
  if (ret)
   return ret;

  if (je32_to_cpu(summary->cln_mkr) != c->cleanmarker_size) {
   dbg_summary("CLEANMARKER node has totlen 0x%x != normal 0x%x\n",
    je32_to_cpu(summary->cln_mkr), c->cleanmarker_size);
   if ((ret = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(summary->cln_mkr)))))
    return ret;
  } else if (jeb->first_node) {
   dbg_summary("CLEANMARKER node not first node in block "
     "(0x%08x)\n", jeb->offset);
   if ((ret = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(summary->cln_mkr)))))
    return ret;
  } else {
   jffs2_link_node_ref(c, jeb, jeb->offset | REF_NORMAL,
         je32_to_cpu(summary->cln_mkr), NULL);
  }
 }

 ret = jffs2_sum_process_sum_data(c, jeb, summary, pseudo_random);
 /* -ENOTRECOVERABLE isn't a fatal error -- it means we should do a full
   scan of this eraseblock. So return zero */
 if (ret == -ENOTRECOVERABLE)
  return 0;
 if (ret)
  return ret;  /* real error */

 /* for PARANOIA_CHECK */
 ret = jffs2_prealloc_raw_node_refs(c, jeb, 2);
 if (ret)
  return ret;

 sum_link_node_ref(c, jeb, ofs | REF_NORMAL, sumsize, NULL);

 if (unlikely(jeb->free_size)) {
  JFFS2_WARNING("Free size 0x%x bytes in eraseblock @0x%08x with summary?\n",
         jeb->free_size, jeb->offset);
  jeb->wasted_size += jeb->free_size;
  c->wasted_size += jeb->free_size;
  c->free_size -= jeb->free_size;
  jeb->free_size = 0;
 }

 return jffs2_scan_classify_jeb(c, jeb);

crc_err:
 JFFS2_WARNING("Summary node crc error, skipping summary information.\n");

 return 0;
}

/* Write summary data to flash - helper function for jffs2_sum_write_sumnode() */

static int jffs2_sum_write_data(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb,
    uint32_t infosize, uint32_t datasize, int padsize)
{
 struct jffs2_raw_summary isum;
 union jffs2_sum_mem *temp;
 struct jffs2_sum_marker *sm;
 struct kvec vecs[2];
 uint32_t sum_ofs;
 void *wpage;
 int ret;
 size_t retlen;

 if (padsize + datasize > MAX_SUMMARY_SIZE) {
  /* It won't fit in the buffer. Abort summary for this jeb */
  jffs2_sum_disable_collecting(c->summary);

  JFFS2_WARNING("Summary too big (%d data, %d pad) in eraseblock at %08x\n",
         datasize, padsize, jeb->offset);
  /* Non-fatal */
  return 0;
 }
 /* Is there enough space for summary? */
 if (padsize < 0) {
  /* don't try to write out summary for this jeb */
  jffs2_sum_disable_collecting(c->summary);

  JFFS2_WARNING("Not enough space for summary, padsize = %d\n",
         padsize);
  /* Non-fatal */
  return 0;
 }

 memset(c->summary->sum_buf, 0xff, datasize);
 memset(&isum, 0, sizeof(isum));

 isum.magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
 isum.nodetype = cpu_to_je16(JFFS2_NODETYPE_SUMMARY);
 isum.totlen = cpu_to_je32(infosize);
 isum.hdr_crc = cpu_to_je32(crc32(0, &isum, sizeof(struct jffs2_unknown_node) - 4));
 isum.padded = cpu_to_je32(c->summary->sum_padded);
 isum.cln_mkr = cpu_to_je32(c->cleanmarker_size);
 isum.sum_num = cpu_to_je32(c->summary->sum_num);
 wpage = c->summary->sum_buf;

 while (c->summary->sum_num) {
  temp = c->summary->sum_list_head;

  switch (je16_to_cpu(temp->u.nodetype)) {
   case JFFS2_NODETYPE_INODE: {
    struct jffs2_sum_inode_flash *sino_ptr = wpage;

    sino_ptr->nodetype = temp->i.nodetype;
    sino_ptr->inode = temp->i.inode;
    sino_ptr->version = temp->i.version;
    sino_ptr->offset = temp->i.offset;
    sino_ptr->totlen = temp->i.totlen;

    wpage += JFFS2_SUMMARY_INODE_SIZE;

    break;
   }

   case JFFS2_NODETYPE_DIRENT: {
    struct jffs2_sum_dirent_flash *sdrnt_ptr = wpage;

    sdrnt_ptr->nodetype = temp->d.nodetype;
    sdrnt_ptr->totlen = temp->d.totlen;
    sdrnt_ptr->offset = temp->d.offset;
    sdrnt_ptr->pino = temp->d.pino;
    sdrnt_ptr->version = temp->d.version;
    sdrnt_ptr->ino = temp->d.ino;
    sdrnt_ptr->nsize = temp->d.nsize;
    sdrnt_ptr->type = temp->d.type;

    memcpy(sdrnt_ptr->name, temp->d.name,
       temp->d.nsize);

    wpage += JFFS2_SUMMARY_DIRENT_SIZE(temp->d.nsize);

    break;
   }
#ifdef CONFIG_JFFS2_FS_XATTR
   case JFFS2_NODETYPE_XATTR: {
    struct jffs2_sum_xattr_flash *sxattr_ptr = wpage;

    temp = c->summary->sum_list_head;
    sxattr_ptr->nodetype = temp->x.nodetype;
    sxattr_ptr->xid = temp->x.xid;
    sxattr_ptr->version = temp->x.version;
    sxattr_ptr->offset = temp->x.offset;
    sxattr_ptr->totlen = temp->x.totlen;

    wpage += JFFS2_SUMMARY_XATTR_SIZE;
    break;
   }
   case JFFS2_NODETYPE_XREF: {
    struct jffs2_sum_xref_flash *sxref_ptr = wpage;

    temp = c->summary->sum_list_head;
    sxref_ptr->nodetype = temp->r.nodetype;
    sxref_ptr->offset = temp->r.offset;

    wpage += JFFS2_SUMMARY_XREF_SIZE;
    break;
   }
#endif
   default : {
    if ((je16_to_cpu(temp->u.nodetype) & JFFS2_COMPAT_MASK)
        == JFFS2_FEATURE_RWCOMPAT_COPY) {
     dbg_summary("Writing unknown RWCOMPAT_COPY node type %x\n",
          je16_to_cpu(temp->u.nodetype));
     jffs2_sum_disable_collecting(c->summary);
     /* The above call removes the list, nothing more to do */
     goto bail_rwcompat;
    } else {
     BUG(); /* unknown node in summary information */
    }
   }
  }

  c->summary->sum_list_head = temp->u.next;
  kfree(temp);

  c->summary->sum_num--;
 }
 bail_rwcompat:

 jffs2_sum_reset_collected(c->summary);

 wpage += padsize;

 sm = wpage;
 sm->offset = cpu_to_je32(c->sector_size - jeb->free_size);
 sm->magic = cpu_to_je32(JFFS2_SUM_MAGIC);

 isum.sum_crc = cpu_to_je32(crc32(0, c->summary->sum_buf, datasize));
 isum.node_crc = cpu_to_je32(crc32(0, &isum, sizeof(isum) - 8));

 vecs[0].iov_base = &isum;
 vecs[0].iov_len = sizeof(isum);
 vecs[1].iov_base = c->summary->sum_buf;
 vecs[1].iov_len = datasize;

 sum_ofs = jeb->offset + c->sector_size - jeb->free_size;

 dbg_summary("writing out data to flash to pos : 0x%08x\n", sum_ofs);

 ret = jffs2_flash_writev(c, vecs, 2, sum_ofs, &retlen, 0);

 if (ret || (retlen != infosize)) {

  JFFS2_WARNING("Write of %u bytes at 0x%08x failed. returned %d, retlen %zd\n",
         infosize, sum_ofs, ret, retlen);

  if (retlen) {
   /* Waste remaining space */
   spin_lock(&c->erase_completion_lock);
   jffs2_link_node_ref(c, jeb, sum_ofs | REF_OBSOLETE, infosize, NULL);
   spin_unlock(&c->erase_completion_lock);
  }

  c->summary->sum_size = JFFS2_SUMMARY_NOSUM_SIZE;

  return 0;
 }

 spin_lock(&c->erase_completion_lock);
 jffs2_link_node_ref(c, jeb, sum_ofs | REF_NORMAL, infosize, NULL);
 spin_unlock(&c->erase_completion_lock);

 return 0;
}

/* Write out summary information - called from jffs2_do_reserve_space */

int jffs2_sum_write_sumnode(struct jffs2_sb_info *c)
 __must_hold(&c->erase_completion_block)
{
 int datasize, infosize, padsize;
 struct jffs2_eraseblock *jeb;
 int ret = 0;

 dbg_summary("called\n");

 spin_unlock(&c->erase_completion_lock);

 jeb = c->nextblock;
 ret = jffs2_prealloc_raw_node_refs(c, jeb, 1);

 if (ret)
  goto out;

 if (!c->summary->sum_num || !c->summary->sum_list_head) {
  JFFS2_WARNING("Empty summary info!!!\n");
  BUG();
 }

 datasize = c->summary->sum_size + sizeof(struct jffs2_sum_marker);
 infosize = sizeof(struct jffs2_raw_summary) + datasize;
 padsize = jeb->free_size - infosize;
 infosize += padsize;
 datasize += padsize;

 ret = jffs2_sum_write_data(c, jeb, infosize, datasize, padsize);

out:
 spin_lock(&c->erase_completion_lock);
 return ret;
}