static int jffs2_scan_inode_node(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb,
struct jffs2_raw_inode *ri, uint32_t ofs, struct jffs2_summary *s)
{
struct jffs2_inode_cache *ic;
uint32_t crc, ino = je32_to_cpu(ri->ino);
D1(printk(KERN_DEBUG "jffs2_scan_inode_node(): Node at 0x%08x\n", ofs));
/* We do very little here now. Just check the ino# to which we should attribute
this node; we can do all the CRC checking etc. later. There's a tradeoff here --
we used to scan the flash once only, reading everything we want from it into
memory, then building all our in-core data structures and freeing the extra
information. Now we allow the first part of the mount to complete a lot quicker,
but we have to go _back_ to the flash in order to finish the CRC checking, etc.
Which means that the _full_ amount of time to get to proper write mode with GC
operational may actually be _longer_ than before. Sucks to be me. */
/* Check the node CRC in any case. */
crc = crc32(0, ri, sizeof(*ri)-8);
if (crc != je32_to_cpu(ri->node_crc)) {
printk(KERN_NOTICE "jffs2_scan_inode_node(): CRC failed on "
"node at 0x%08x: Read 0x%08x, calculated 0x%08x\n",
ofs, je32_to_cpu(ri->node_crc), crc);
/*
* We believe totlen because the CRC on the node
* _header_ was OK, just the node itself failed.
*/
return jffs2_scan_dirty_space(c, jeb,
PAD(je32_to_cpu(ri->totlen)));
}
ic = jffs2_get_ino_cache(c, ino);
if (!ic) {
ic = jffs2_scan_make_ino_cache(c, ino);
if (!ic)
return -ENOMEM;
}
/* Wheee. It worked */
jffs2_link_node_ref(c, jeb, ofs | REF_UNCHECKED, PAD(je32_to_cpu(ri->totlen)), ic);
D1(printk(KERN_DEBUG "Node is ino #%u, version %d. Range 0x%x-0x%x\n",
je32_to_cpu(ri->ino), je32_to_cpu(ri->version),
je32_to_cpu(ri->offset),
je32_to_cpu(ri->offset)+je32_to_cpu(ri->dsize)));
pseudo_random += je32_to_cpu(ri->version);
if (jffs2_sum_active()) {
jffs2_sum_add_inode_mem(s, ri, ofs - jeb->offset);
}
return 0;
}
static int jffs2_scan_inode_node(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb,
struct jffs2_raw_inode *ri, uint32_t ofs, struct jffs2_summary *s)
{
struct jffs2_inode_cache *ic;
uint32_t crc, ino = je32_to_cpu(ri->ino);
jffs2_dbg(1, "%s(): Node at 0x%08x\n", __func__, ofs);
crc = crc32(0, ri, sizeof(*ri)-8);
if (crc != je32_to_cpu(ri->node_crc)) {
pr_notice("%s(): CRC failed on node at 0x%08x: Read 0x%08x, calculated 0x%08x\n",
__func__, ofs, je32_to_cpu(ri->node_crc), crc);
return jffs2_scan_dirty_space(c, jeb,
PAD(je32_to_cpu(ri->totlen)));
}
ic = jffs2_get_ino_cache(c, ino);
if (!ic) {
ic = jffs2_scan_make_ino_cache(c, ino);
if (!ic)
return -ENOMEM;
}
jffs2_link_node_ref(c, jeb, ofs | REF_UNCHECKED, PAD(je32_to_cpu(ri->totlen)), ic);
jffs2_dbg(1, "Node is ino #%u, version %d. Range 0x%x-0x%x\n",
je32_to_cpu(ri->ino), je32_to_cpu(ri->version),
je32_to_cpu(ri->offset),
je32_to_cpu(ri->offset)+je32_to_cpu(ri->dsize));
pseudo_random += je32_to_cpu(ri->version);
if (jffs2_sum_active()) {
jffs2_sum_add_inode_mem(s, ri, ofs - jeb->offset);
}
return 0;
}
static int jffs2_scan_inode_node(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb,
struct jffs2_raw_inode *ri, uint32_t ofs, struct jffs2_summary *s)
{
struct jffs2_raw_node_ref *raw;
struct jffs2_inode_cache *ic;
uint32_t ino = je32_to_cpu(ri->ino);
D1(printk(KERN_DEBUG "jffs2_scan_inode_node(): Node at 0x%08x\n", ofs));
/* We do very little here now. Just check the ino# to which we should attribute
this node; we can do all the CRC checking etc. later. There's a tradeoff here --
we used to scan the flash once only, reading everything we want from it into
memory, then building all our in-core data structures and freeing the extra
information. Now we allow the first part of the mount to complete a lot quicker,
but we have to go _back_ to the flash in order to finish the CRC checking, etc.
Which means that the _full_ amount of time to get to proper write mode with GC
operational may actually be _longer_ than before. Sucks to be me. */
raw = jffs2_alloc_raw_node_ref();
if (!raw) {
printk(KERN_NOTICE "jffs2_scan_inode_node(): allocation of node reference failed\n");
return -ENOMEM;
}
ic = jffs2_get_ino_cache(c, ino);
if (!ic) {
/* Inocache get failed. Either we read a bogus ino# or it's just genuinely the
first node we found for this inode. Do a CRC check to protect against the former
case */
uint32_t crc = crc32(0, ri, sizeof(*ri)-8);
if (crc != je32_to_cpu(ri->node_crc)) {
printk(KERN_NOTICE "jffs2_scan_inode_node(): CRC failed on node at 0x%08x: Read 0x%08x, calculated 0x%08x\n",
ofs, je32_to_cpu(ri->node_crc), crc);
/* We believe totlen because the CRC on the node _header_ was OK, just the node itself failed. */
DIRTY_SPACE(PAD(je32_to_cpu(ri->totlen)));
jffs2_free_raw_node_ref(raw);
return 0;
}
ic = jffs2_scan_make_ino_cache(c, ino);
if (!ic) {
jffs2_free_raw_node_ref(raw);
return -ENOMEM;
}
}
/* Wheee. It worked */
raw->flash_offset = ofs | REF_UNCHECKED;
raw->__totlen = PAD(je32_to_cpu(ri->totlen));
raw->next_phys = NULL;
raw->next_in_ino = ic->nodes;
ic->nodes = raw;
if (!jeb->first_node)
jeb->first_node = raw;
if (jeb->last_node)
jeb->last_node->next_phys = raw;
jeb->last_node = raw;
D1(printk(KERN_DEBUG "Node is ino #%u, version %d. Range 0x%x-0x%x\n",
je32_to_cpu(ri->ino), je32_to_cpu(ri->version),
je32_to_cpu(ri->offset),
je32_to_cpu(ri->offset)+je32_to_cpu(ri->dsize)));
pseudo_random += je32_to_cpu(ri->version);
UNCHECKED_SPACE(PAD(je32_to_cpu(ri->totlen)));
if (jffs2_sum_active()) {
jffs2_sum_add_inode_mem(s, ri, ofs - jeb->offset);
}
return 0;
}
