[JFFS2] Split a large routine on several smaller.
Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Artem B. Bityutskiy
Thomas Gleixner
parent
2fc2991175
commit
dae6227f71
@ -7,7 +7,7 @@
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*
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* For licensing information, see the file 'LICENCE' in this directory.
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*
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* $Id: nodelist.c,v 1.98 2005/07/10 15:15:32 dedekind Exp $
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* $Id: nodelist.c,v 1.99 2005/07/15 10:13:54 dedekind Exp $
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*
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*/
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@ -137,6 +137,307 @@ static struct jffs2_raw_node_ref *jffs2_first_valid_node(struct jffs2_raw_node_r
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return NULL;
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}
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/*
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* Helper function for jffs2_get_inode_nodes().
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* It is called every time an directory entry node is found.
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*
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* Returns: 0 on succes;
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* 1 if the node should be marked obsolete;
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* negative error code on failure.
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*/
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static inline int
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read_direntry(struct jffs2_sb_info *c,
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struct jffs2_raw_node_ref *ref,
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struct jffs2_raw_dirent *rd,
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uint32_t read,
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struct jffs2_full_dirent **fdp,
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int32_t *latest_mctime,
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uint32_t *mctime_ver)
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{
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struct jffs2_full_dirent *fd;
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/* The direntry nodes are checked during the flash scanning */
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BUG_ON(ref_flags(ref) == REF_UNCHECKED);
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/* Obsoleted. This cannot happen, surely? dwmw2 20020308 */
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BUG_ON(ref_obsolete(ref));
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/* Sanity check */
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if (unlikely(PAD((rd->nsize + sizeof(*rd))) != PAD(je32_to_cpu(rd->totlen)))) {
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printk(KERN_ERR "Error! Illegal nsize in node at %#08x: nsize %#02x, totlen %#04x\n",
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ref_offset(ref), rd->nsize, je32_to_cpu(rd->totlen));
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return 1;
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}
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fd = jffs2_alloc_full_dirent(rd->nsize + 1);
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if (unlikely(!fd))
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return -ENOMEM;
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fd->raw = ref;
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fd->version = je32_to_cpu(rd->version);
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fd->ino = je32_to_cpu(rd->ino);
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fd->type = rd->type;
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/* Pick out the mctime of the latest dirent */
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if(fd->version > *mctime_ver) {
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*mctime_ver = fd->version;
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*latest_mctime = je32_to_cpu(rd->mctime);
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}
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/*
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* Copy as much of the name as possible from the raw
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* dirent we've already read from the flash.
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*/
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if (read > sizeof(*rd))
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memcpy(&fd->name[0], &rd->name[0],
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min_t(uint32_t, rd->nsize, (read - sizeof(*rd)) ));
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/* Do we need to copy any more of the name directly from the flash? */
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if (rd->nsize + sizeof(*rd) > read) {
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/* FIXME: point() */
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int err;
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int already = read - sizeof(*rd);
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err = jffs2_flash_read(c, (ref_offset(ref)) + read,
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rd->nsize - already, &read, &fd->name[already]);
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if (unlikely(read != rd->nsize - already) && likely(!err))
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return -EIO;
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if (unlikely(err)) {
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printk(KERN_WARNING "Read remainder of name in jffs2_get_inode_nodes(): error %d\n", err);
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jffs2_free_full_dirent(fd);
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return -EIO;
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}
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}
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fd->nhash = full_name_hash(fd->name, rd->nsize);
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fd->next = NULL;
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fd->name[rd->nsize] = '\0';
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/*
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* Wheee. We now have a complete jffs2_full_dirent structure, with
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* the name in it and everything. Link it into the list
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*/
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D1(printk(KERN_DEBUG "Adding fd \"%s\", ino #%u\n", fd->name, fd->ino));
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jffs2_add_fd_to_list(c, fd, fdp);
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return 0;
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}
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/*
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* Helper function for jffs2_get_inode_nodes().
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* It is called every time an inode node is found.
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*
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* Returns: 0 on succes;
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* 1 if the node should be marked obsolete;
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* negative error code on failure.
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*/
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static inline int
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read_dnode(struct jffs2_sb_info *c,
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struct jffs2_raw_node_ref *ref,
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struct jffs2_raw_inode *rd,
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uint32_t read,
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struct rb_root *tnp,
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int32_t *latest_mctime,
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uint32_t *mctime_ver)
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{
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struct jffs2_eraseblock *jeb;
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struct jffs2_tmp_dnode_info *tn;
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/* Obsoleted. This cannot happen, surely? dwmw2 20020308 */
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BUG_ON(ref_obsolete(ref));
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/* If we've never checked the CRCs on this node, check them now */
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if (ref_flags(ref) == REF_UNCHECKED) {
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uint32_t crc, len;
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crc = crc32(0, rd, sizeof(*rd) - 8);
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if (unlikely(crc != je32_to_cpu(rd->node_crc))) {
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printk(KERN_WARNING "Header CRC failed on node at %#08x: read %#08x, calculated %#08x\n",
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ref_offset(ref), je32_to_cpu(rd->node_crc), crc);
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return 1;
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}
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/* Sanity checks */
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if (unlikely(je32_to_cpu(rd->offset) > je32_to_cpu(rd->isize)) ||
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unlikely(PAD(je32_to_cpu(rd->csize) + sizeof(*rd)) != PAD(je32_to_cpu(rd->totlen)))) {
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printk(KERN_WARNING "Inode corrupted at %#08x, totlen %d, #ino %d, version %d, "
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"isize %d, csize %d, dsize %d \n",
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ref_offset(ref), je32_to_cpu(rd->totlen), je32_to_cpu(rd->ino),
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je32_to_cpu(rd->version), je32_to_cpu(rd->isize),
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je32_to_cpu(rd->csize), je32_to_cpu(rd->dsize));
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return 1;
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}
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if (rd->compr != JFFS2_COMPR_ZERO && je32_to_cpu(rd->csize)) {
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unsigned char *buf = NULL;
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uint32_t pointed = 0;
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int err;
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#ifndef __ECOS
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if (c->mtd->point) {
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err = c->mtd->point (c->mtd, ref_offset(ref) + sizeof(*rd), je32_to_cpu(rd->csize),
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&read, &buf);
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if (unlikely(read < je32_to_cpu(rd->csize)) && likely(!err)) {
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D1(printk(KERN_DEBUG "MTD point returned len too short: 0x%zx\n", read));
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c->mtd->unpoint(c->mtd, buf, ref_offset(ref) + sizeof(*rd),
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je32_to_cpu(rd->csize));
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} else if (unlikely(err)){
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D1(printk(KERN_DEBUG "MTD point failed %d\n", err));
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} else
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pointed = 1; /* succefully pointed to device */
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}
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#endif
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if(!pointed){
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buf = kmalloc(je32_to_cpu(rd->csize), GFP_KERNEL);
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if (!buf)
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return -ENOMEM;
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err = jffs2_flash_read(c, ref_offset(ref) + sizeof(*rd), je32_to_cpu(rd->csize),
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&read, buf);
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if (unlikely(read != je32_to_cpu(rd->csize)) && likely(!err))
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err = -EIO;
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if (err) {
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kfree(buf);
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return err;
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}
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}
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crc = crc32(0, buf, je32_to_cpu(rd->csize));
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if(!pointed)
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kfree(buf);
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#ifndef __ECOS
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else
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c->mtd->unpoint(c->mtd, buf, ref_offset(ref) + sizeof(*rd), je32_to_cpu(rd->csize));
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#endif
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if (crc != je32_to_cpu(rd->data_crc)) {
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printk(KERN_NOTICE "Data CRC failed on node at %#08x: read %#08x, calculated %#08x\n",
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ref_offset(ref), je32_to_cpu(rd->data_crc), crc);
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return 1;
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}
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}
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/* Mark the node as having been checked and fix the accounting accordingly */
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jeb = &c->blocks[ref->flash_offset / c->sector_size];
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len = ref_totlen(c, jeb, ref);
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spin_lock(&c->erase_completion_lock);
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jeb->used_size += len;
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jeb->unchecked_size -= len;
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c->used_size += len;
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c->unchecked_size -= len;
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/* If node covers at least a whole page, or if it starts at the
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beginning of a page and runs to the end of the file, or if
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it's a hole node, mark it REF_PRISTINE, else REF_NORMAL.
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If it's actually overlapped, it'll get made NORMAL (or OBSOLETE)
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when the overlapping node(s) get added to the tree anyway.
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*/
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if ((je32_to_cpu(rd->dsize) >= PAGE_CACHE_SIZE) ||
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( ((je32_to_cpu(rd->offset) & (PAGE_CACHE_SIZE-1))==0) &&
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(je32_to_cpu(rd->dsize) + je32_to_cpu(rd->offset) == je32_to_cpu(rd->isize)))) {
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D1(printk(KERN_DEBUG "Marking node at %#08x REF_PRISTINE\n", ref_offset(ref)));
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ref->flash_offset = ref_offset(ref) | REF_PRISTINE;
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} else {
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D1(printk(KERN_DEBUG "Marking node at %#08x REF_NORMAL\n", ref_offset(ref)));
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ref->flash_offset = ref_offset(ref) | REF_NORMAL;
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}
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spin_unlock(&c->erase_completion_lock);
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}
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tn = jffs2_alloc_tmp_dnode_info();
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if (!tn) {
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D1(printk(KERN_DEBUG "alloc tn failed\n"));
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return -ENOMEM;
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}
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tn->fn = jffs2_alloc_full_dnode();
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if (!tn->fn) {
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D1(printk(KERN_DEBUG "alloc fn failed\n"));
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jffs2_free_tmp_dnode_info(tn);
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return -ENOMEM;
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}
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tn->version = je32_to_cpu(rd->version);
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tn->fn->ofs = je32_to_cpu(rd->offset);
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tn->fn->raw = ref;
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/* There was a bug where we wrote hole nodes out with
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csize/dsize swapped. Deal with it */
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if (rd->compr == JFFS2_COMPR_ZERO && !je32_to_cpu(rd->dsize) && je32_to_cpu(rd->csize))
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tn->fn->size = je32_to_cpu(rd->csize);
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else // normal case...
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tn->fn->size = je32_to_cpu(rd->dsize);
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D1(printk(KERN_DEBUG "dnode @%08x: ver %u, offset %#04x, dsize %#04x\n",
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ref_offset(ref), je32_to_cpu(rd->version),
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je32_to_cpu(rd->offset), je32_to_cpu(rd->dsize)));
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jffs2_add_tn_to_tree(tn, tnp);
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return 0;
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}
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/*
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* Helper function for jffs2_get_inode_nodes().
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* It is called every time an unknown node is found.
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*
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* Returns: 0 on succes;
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* 1 if the node should be marked obsolete;
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* negative error code on failure.
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*/
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static inline int
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read_unknown(struct jffs2_sb_info *c,
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struct jffs2_raw_node_ref *ref,
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struct jffs2_unknown_node *un,
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uint32_t read)
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{
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/* We don't mark unknown nodes as REF_UNCHECKED */
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BUG_ON(ref_flags(ref) == REF_UNCHECKED);
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un->nodetype = cpu_to_je16(JFFS2_NODE_ACCURATE | je16_to_cpu(un->nodetype));
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if (crc32(0, un, sizeof(struct jffs2_unknown_node) - 4) != je32_to_cpu(un->hdr_crc)) {
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/* Hmmm. This should have been caught at scan time. */
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printk(KERN_WARNING "Warning! Node header CRC failed at %#08x. "
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"But it must have been OK earlier.\n", ref_offset(ref));
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D1(printk(KERN_DEBUG "Node was: { %#04x, %#04x, %#08x, %#08x }\n",
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je16_to_cpu(un->magic), je16_to_cpu(un->nodetype),
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je32_to_cpu(un->totlen), je32_to_cpu(un->hdr_crc)));
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return 1;
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} else {
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switch(je16_to_cpu(un->nodetype) & JFFS2_COMPAT_MASK) {
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case JFFS2_FEATURE_INCOMPAT:
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printk(KERN_NOTICE "Unknown INCOMPAT nodetype %#04X at %#08x\n",
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je16_to_cpu(un->nodetype), ref_offset(ref));
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/* EEP */
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BUG();
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break;
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case JFFS2_FEATURE_ROCOMPAT:
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printk(KERN_NOTICE "Unknown ROCOMPAT nodetype %#04X at %#08x\n",
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je16_to_cpu(un->nodetype), ref_offset(ref));
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BUG_ON(!(c->flags & JFFS2_SB_FLAG_RO));
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break;
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case JFFS2_FEATURE_RWCOMPAT_COPY:
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printk(KERN_NOTICE "Unknown RWCOMPAT_COPY nodetype %#04X at %#08x\n",
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je16_to_cpu(un->nodetype), ref_offset(ref));
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break;
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case JFFS2_FEATURE_RWCOMPAT_DELETE:
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printk(KERN_NOTICE "Unknown RWCOMPAT_DELETE nodetype %#04X at %#08x\n",
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je16_to_cpu(un->nodetype), ref_offset(ref));
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return 1;
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}
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}
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return 0;
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}
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/* Get tmp_dnode_info and full_dirent for all non-obsolete nodes associated
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with this ino, returning the former in order of version */
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@ -146,9 +447,8 @@ int jffs2_get_inode_nodes(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
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uint32_t *mctime_ver)
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{
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struct jffs2_raw_node_ref *ref, *valid_ref;
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struct jffs2_tmp_dnode_info *tn;
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struct rb_root ret_tn = RB_ROOT;
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struct jffs2_full_dirent *fd, *ret_fd = NULL;
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struct jffs2_full_dirent *ret_fd = NULL;
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union jffs2_node_union node;
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size_t retlen;
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int err;
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@ -186,292 +486,67 @@ int jffs2_get_inode_nodes(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
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goto free_out;
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}
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/* Check we've managed to read at least the common node header */
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if (retlen < min_t(uint32_t, ref_totlen(c, NULL, ref), sizeof(node.u))) {
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printk(KERN_WARNING "short read in get_inode_nodes()\n");
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err = -EIO;
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goto free_out;
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}
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switch (je16_to_cpu(node.u.nodetype)) {
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case JFFS2_NODETYPE_DIRENT:
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D1(printk(KERN_DEBUG "Node at %08x (%d) is a dirent node\n", ref_offset(ref), ref_flags(ref)));
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if (ref_flags(ref) == REF_UNCHECKED) {
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printk(KERN_WARNING "BUG: Dirent node at 0x%08x never got checked? How?\n", ref_offset(ref));
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BUG();
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}
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if (retlen < sizeof(node.d)) {
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printk(KERN_WARNING "short read in get_inode_nodes()\n");
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printk(KERN_WARNING "Warning! Short read dirent at %#08x\n", ref_offset(ref));
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err = -EIO;
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goto free_out;
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}
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/* sanity check */
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if (PAD((node.d.nsize + sizeof (node.d))) != PAD(je32_to_cpu (node.d.totlen))) {
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printk(KERN_NOTICE "jffs2_get_inode_nodes(): Illegal nsize in node at 0x%08x: nsize 0x%02x, totlen %04x\n",
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ref_offset(ref), node.d.nsize, je32_to_cpu(node.d.totlen));
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err = read_direntry(c, ref, &node.d, retlen, &ret_fd, latest_mctime, mctime_ver);
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if (err == 1) {
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jffs2_mark_node_obsolete(c, ref);
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spin_lock(&c->erase_completion_lock);
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continue;
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}
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break;
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} else if (unlikely(err))
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goto free_out;
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if (je32_to_cpu(node.d.version) > *highest_version)
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*highest_version = je32_to_cpu(node.d.version);
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if (ref_obsolete(ref)) {
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/* Obsoleted. This cannot happen, surely? dwmw2 20020308 */
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printk(KERN_ERR "Dirent node at 0x%08x became obsolete while we weren't looking\n",
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ref_offset(ref));
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BUG();
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}
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fd = jffs2_alloc_full_dirent(node.d.nsize+1);
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if (!fd) {
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err = -ENOMEM;
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goto free_out;
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}
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fd->raw = ref;
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fd->version = je32_to_cpu(node.d.version);
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fd->ino = je32_to_cpu(node.d.ino);
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fd->type = node.d.type;
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/* Pick out the mctime of the latest dirent */
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if(fd->version > *mctime_ver) {
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*mctime_ver = fd->version;
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*latest_mctime = je32_to_cpu(node.d.mctime);
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}
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/* memcpy as much of the name as possible from the raw
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dirent we've already read from the flash
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*/
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if (retlen > sizeof(struct jffs2_raw_dirent))
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memcpy(&fd->name[0], &node.d.name[0], min_t(uint32_t, node.d.nsize, (retlen-sizeof(struct jffs2_raw_dirent))));
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/* Do we need to copy any more of the name directly
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from the flash?
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*/
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if (node.d.nsize + sizeof(struct jffs2_raw_dirent) > retlen) {
|
||||
/* FIXME: point() */
|
||||
int already = retlen - sizeof(struct jffs2_raw_dirent);
|
||||
|
||||
err = jffs2_flash_read(c, (ref_offset(ref)) + retlen,
|
||||
node.d.nsize - already, &retlen, &fd->name[already]);
|
||||
if (!err && retlen != node.d.nsize - already)
|
||||
err = -EIO;
|
||||
|
||||
if (err) {
|
||||
printk(KERN_WARNING "Read remainder of name in jffs2_get_inode_nodes(): error %d\n", err);
|
||||
jffs2_free_full_dirent(fd);
|
||||
goto free_out;
|
||||
}
|
||||
}
|
||||
fd->nhash = full_name_hash(fd->name, node.d.nsize);
|
||||
fd->next = NULL;
|
||||
fd->name[node.d.nsize] = '\0';
|
||||
/* Wheee. We now have a complete jffs2_full_dirent structure, with
|
||||
the name in it and everything. Link it into the list
|
||||
*/
|
||||
D1(printk(KERN_DEBUG "Adding fd \"%s\", ino #%u\n", fd->name, fd->ino));
|
||||
jffs2_add_fd_to_list(c, fd, &ret_fd);
|
||||
break;
|
||||
|
||||
case JFFS2_NODETYPE_INODE:
|
||||
D1(printk(KERN_DEBUG "Node at %08x (%d) is a data node\n", ref_offset(ref), ref_flags(ref)));
|
||||
|
||||
if (retlen < sizeof(node.i)) {
|
||||
printk(KERN_WARNING "read too short for dnode\n");
|
||||
printk(KERN_WARNING "Warning! Short read dnode at %#08x\n", ref_offset(ref));
|
||||
err = -EIO;
|
||||
goto free_out;
|
||||
}
|
||||
|
||||
err = read_dnode(c, ref, &node.i, retlen, &ret_tn, latest_mctime, mctime_ver);
|
||||
if (err == 1) {
|
||||
jffs2_mark_node_obsolete(c, ref);
|
||||
break;
|
||||
} else if (unlikely(err))
|
||||
goto free_out;
|
||||
|
||||
if (je32_to_cpu(node.i.version) > *highest_version)
|
||||
*highest_version = je32_to_cpu(node.i.version);
|
||||
D1(printk(KERN_DEBUG "version %d, highest_version now %d\n", je32_to_cpu(node.i.version), *highest_version));
|
||||
|
||||
D1(printk(KERN_DEBUG "version %d, highest_version now %d\n",
|
||||
je32_to_cpu(node.i.version), *highest_version));
|
||||
|
||||
if (ref_obsolete(ref)) {
|
||||
/* Obsoleted. This cannot happen, surely? dwmw2 20020308 */
|
||||
printk(KERN_ERR "Inode node at 0x%08x became obsolete while we weren't looking\n",
|
||||
ref_offset(ref));
|
||||
BUG();
|
||||
}
|
||||
|
||||
/* If we've never checked the CRCs on this node, check them now. */
|
||||
if (ref_flags(ref) == REF_UNCHECKED) {
|
||||
uint32_t crc, len;
|
||||
struct jffs2_eraseblock *jeb;
|
||||
|
||||
crc = crc32(0, &node, sizeof(node.i)-8);
|
||||
if (crc != je32_to_cpu(node.i.node_crc)) {
|
||||
printk(KERN_NOTICE "jffs2_get_inode_nodes(): CRC failed on node at 0x%08x: Read 0x%08x, calculated 0x%08x\n",
|
||||
ref_offset(ref), je32_to_cpu(node.i.node_crc), crc);
|
||||
jffs2_mark_node_obsolete(c, ref);
|
||||
spin_lock(&c->erase_completion_lock);
|
||||
continue;
|
||||
}
|
||||
|
||||
/* sanity checks */
|
||||
if ( je32_to_cpu(node.i.offset) > je32_to_cpu(node.i.isize) ||
|
||||
PAD(je32_to_cpu(node.i.csize) + sizeof (node.i)) != PAD(je32_to_cpu(node.i.totlen))) {
|
||||
printk(KERN_NOTICE "jffs2_get_inode_nodes(): Inode corrupted at 0x%08x, totlen %d, #ino %d, version %d, isize %d, csize %d, dsize %d \n",
|
||||
ref_offset(ref), je32_to_cpu(node.i.totlen), je32_to_cpu(node.i.ino),
|
||||
je32_to_cpu(node.i.version), je32_to_cpu(node.i.isize),
|
||||
je32_to_cpu(node.i.csize), je32_to_cpu(node.i.dsize));
|
||||
jffs2_mark_node_obsolete(c, ref);
|
||||
spin_lock(&c->erase_completion_lock);
|
||||
continue;
|
||||
}
|
||||
|
||||
if (node.i.compr != JFFS2_COMPR_ZERO && je32_to_cpu(node.i.csize)) {
|
||||
unsigned char *buf=NULL;
|
||||
uint32_t pointed = 0;
|
||||
#ifndef __ECOS
|
||||
if (c->mtd->point) {
|
||||
err = c->mtd->point (c->mtd, ref_offset(ref) + sizeof(node.i), je32_to_cpu(node.i.csize),
|
||||
&retlen, &buf);
|
||||
if (!err && retlen < je32_to_cpu(node.i.csize)) {
|
||||
D1(printk(KERN_DEBUG "MTD point returned len too short: 0x%zx\n", retlen));
|
||||
c->mtd->unpoint(c->mtd, buf, ref_offset(ref) + sizeof(node.i), je32_to_cpu(node.i.csize));
|
||||
} else if (err){
|
||||
D1(printk(KERN_DEBUG "MTD point failed %d\n", err));
|
||||
} else
|
||||
pointed = 1; /* succefully pointed to device */
|
||||
}
|
||||
#endif
|
||||
if(!pointed){
|
||||
buf = kmalloc(je32_to_cpu(node.i.csize), GFP_KERNEL);
|
||||
if (!buf)
|
||||
return -ENOMEM;
|
||||
|
||||
err = jffs2_flash_read(c, ref_offset(ref) + sizeof(node.i), je32_to_cpu(node.i.csize),
|
||||
&retlen, buf);
|
||||
if (!err && retlen != je32_to_cpu(node.i.csize))
|
||||
err = -EIO;
|
||||
if (err) {
|
||||
kfree(buf);
|
||||
return err;
|
||||
}
|
||||
}
|
||||
crc = crc32(0, buf, je32_to_cpu(node.i.csize));
|
||||
if(!pointed)
|
||||
kfree(buf);
|
||||
#ifndef __ECOS
|
||||
else
|
||||
c->mtd->unpoint(c->mtd, buf, ref_offset(ref) + sizeof(node.i), je32_to_cpu(node.i.csize));
|
||||
#endif
|
||||
|
||||
if (crc != je32_to_cpu(node.i.data_crc)) {
|
||||
printk(KERN_NOTICE "jffs2_get_inode_nodes(): Data CRC failed on node at 0x%08x: Read 0x%08x, calculated 0x%08x\n",
|
||||
ref_offset(ref), je32_to_cpu(node.i.data_crc), crc);
|
||||
jffs2_mark_node_obsolete(c, ref);
|
||||
spin_lock(&c->erase_completion_lock);
|
||||
continue;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/* Mark the node as having been checked and fix the accounting accordingly */
|
||||
spin_lock(&c->erase_completion_lock);
|
||||
jeb = &c->blocks[ref->flash_offset / c->sector_size];
|
||||
len = ref_totlen(c, jeb, ref);
|
||||
|
||||
jeb->used_size += len;
|
||||
jeb->unchecked_size -= len;
|
||||
c->used_size += len;
|
||||
c->unchecked_size -= len;
|
||||
|
||||
/* If node covers at least a whole page, or if it starts at the
|
||||
beginning of a page and runs to the end of the file, or if
|
||||
it's a hole node, mark it REF_PRISTINE, else REF_NORMAL.
|
||||
|
||||
If it's actually overlapped, it'll get made NORMAL (or OBSOLETE)
|
||||
when the overlapping node(s) get added to the tree anyway.
|
||||
*/
|
||||
if ((je32_to_cpu(node.i.dsize) >= PAGE_CACHE_SIZE) ||
|
||||
( ((je32_to_cpu(node.i.offset)&(PAGE_CACHE_SIZE-1))==0) &&
|
||||
(je32_to_cpu(node.i.dsize)+je32_to_cpu(node.i.offset) == je32_to_cpu(node.i.isize)))) {
|
||||
D1(printk(KERN_DEBUG "Marking node at 0x%08x REF_PRISTINE\n", ref_offset(ref)));
|
||||
ref->flash_offset = ref_offset(ref) | REF_PRISTINE;
|
||||
} else {
|
||||
D1(printk(KERN_DEBUG "Marking node at 0x%08x REF_NORMAL\n", ref_offset(ref)));
|
||||
ref->flash_offset = ref_offset(ref) | REF_NORMAL;
|
||||
}
|
||||
spin_unlock(&c->erase_completion_lock);
|
||||
}
|
||||
|
||||
tn = jffs2_alloc_tmp_dnode_info();
|
||||
if (!tn) {
|
||||
D1(printk(KERN_DEBUG "alloc tn failed\n"));
|
||||
err = -ENOMEM;
|
||||
goto free_out;
|
||||
}
|
||||
|
||||
tn->fn = jffs2_alloc_full_dnode();
|
||||
if (!tn->fn) {
|
||||
D1(printk(KERN_DEBUG "alloc fn failed\n"));
|
||||
err = -ENOMEM;
|
||||
jffs2_free_tmp_dnode_info(tn);
|
||||
goto free_out;
|
||||
}
|
||||
tn->version = je32_to_cpu(node.i.version);
|
||||
tn->fn->ofs = je32_to_cpu(node.i.offset);
|
||||
/* There was a bug where we wrote hole nodes out with
|
||||
csize/dsize swapped. Deal with it */
|
||||
if (node.i.compr == JFFS2_COMPR_ZERO && !je32_to_cpu(node.i.dsize) && je32_to_cpu(node.i.csize))
|
||||
tn->fn->size = je32_to_cpu(node.i.csize);
|
||||
else // normal case...
|
||||
tn->fn->size = je32_to_cpu(node.i.dsize);
|
||||
tn->fn->raw = ref;
|
||||
D1(printk(KERN_DEBUG "dnode @%08x: ver %u, offset %04x, dsize %04x\n",
|
||||
ref_offset(ref), je32_to_cpu(node.i.version),
|
||||
je32_to_cpu(node.i.offset), je32_to_cpu(node.i.dsize)));
|
||||
jffs2_add_tn_to_tree(tn, &ret_tn);
|
||||
break;
|
||||
|
||||
default:
|
||||
if (ref_flags(ref) == REF_UNCHECKED) {
|
||||
struct jffs2_eraseblock *jeb;
|
||||
uint32_t len;
|
||||
|
||||
printk(KERN_ERR "Eep. Unknown node type %04x at %08x was marked REF_UNCHECKED\n",
|
||||
je16_to_cpu(node.u.nodetype), ref_offset(ref));
|
||||
|
||||
/* Mark the node as having been checked and fix the accounting accordingly */
|
||||
spin_lock(&c->erase_completion_lock);
|
||||
jeb = &c->blocks[ref->flash_offset / c->sector_size];
|
||||
len = ref_totlen(c, jeb, ref);
|
||||
|
||||
jeb->used_size += len;
|
||||
jeb->unchecked_size -= len;
|
||||
c->used_size += len;
|
||||
c->unchecked_size -= len;
|
||||
|
||||
mark_ref_normal(ref);
|
||||
spin_unlock(&c->erase_completion_lock);
|
||||
/* Check we've managed to read at least the common node header */
|
||||
if (retlen < sizeof(struct jffs2_unknown_node)) {
|
||||
printk(KERN_WARNING "Warning! Short read unknown node at %#08x\n",
|
||||
ref_offset(ref));
|
||||
return -EIO;
|
||||
}
|
||||
node.u.nodetype = cpu_to_je16(JFFS2_NODE_ACCURATE | je16_to_cpu(node.u.nodetype));
|
||||
if (crc32(0, &node, sizeof(struct jffs2_unknown_node)-4) != je32_to_cpu(node.u.hdr_crc)) {
|
||||
/* Hmmm. This should have been caught at scan time. */
|
||||
printk(KERN_ERR "Node header CRC failed at %08x. But it must have been OK earlier.\n",
|
||||
ref_offset(ref));
|
||||
printk(KERN_ERR "Node was: { %04x, %04x, %08x, %08x }\n",
|
||||
je16_to_cpu(node.u.magic), je16_to_cpu(node.u.nodetype), je32_to_cpu(node.u.totlen),
|
||||
je32_to_cpu(node.u.hdr_crc));
|
||||
jffs2_mark_node_obsolete(c, ref);
|
||||
} else switch(je16_to_cpu(node.u.nodetype) & JFFS2_COMPAT_MASK) {
|
||||
case JFFS2_FEATURE_INCOMPAT:
|
||||
printk(KERN_NOTICE "Unknown INCOMPAT nodetype %04X at %08x\n", je16_to_cpu(node.u.nodetype), ref_offset(ref));
|
||||
/* EEP */
|
||||
BUG();
|
||||
break;
|
||||
case JFFS2_FEATURE_ROCOMPAT:
|
||||
printk(KERN_NOTICE "Unknown ROCOMPAT nodetype %04X at %08x\n", je16_to_cpu(node.u.nodetype), ref_offset(ref));
|
||||
if (!(c->flags & JFFS2_SB_FLAG_RO))
|
||||
BUG();
|
||||
break;
|
||||
case JFFS2_FEATURE_RWCOMPAT_COPY:
|
||||
printk(KERN_NOTICE "Unknown RWCOMPAT_COPY nodetype %04X at %08x\n", je16_to_cpu(node.u.nodetype), ref_offset(ref));
|
||||
break;
|
||||
case JFFS2_FEATURE_RWCOMPAT_DELETE:
|
||||
printk(KERN_NOTICE "Unknown RWCOMPAT_DELETE nodetype %04X at %08x\n", je16_to_cpu(node.u.nodetype), ref_offset(ref));
|
||||
|
||||
err = read_unknown(c, ref, &node.u, retlen);
|
||||
if (err == 1) {
|
||||
jffs2_mark_node_obsolete(c, ref);
|
||||
break;
|
||||
}
|
||||
} else if (unlikely(err))
|
||||
goto free_out;
|
||||
|
||||
}
|
||||
spin_lock(&c->erase_completion_lock);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user