debug.c

linux 内核源代码

		struct list_head *this;
		int numblocks = 0;
		uint32_t dirty = 0;

		list_for_each(this, &c->clean_list) {
			struct jffs2_eraseblock *jeb = list_entry(this, struct jffs2_eraseblock, list);
			numblocks ++;
			dirty += jeb->wasted_size;
			if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0)) {
				printk(JFFS2_DBG "clean_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n",
					jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size,
					jeb->unchecked_size, jeb->free_size);
			}
		}

		printk (JFFS2_DBG "Contains %d blocks with total wasted size %u, average wasted size: %u\n",
			numblocks, dirty, dirty / numblocks);
	}

	if (list_empty(&c->very_dirty_list)) {
		printk(JFFS2_DBG "very_dirty_list: empty\n");
	} else {
		struct list_head *this;
		int numblocks = 0;
		uint32_t dirty = 0;

		list_for_each(this, &c->very_dirty_list) {
			struct jffs2_eraseblock *jeb = list_entry(this, struct jffs2_eraseblock, list);

			numblocks ++;
			dirty += jeb->dirty_size;
			if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0)) {
				printk(JFFS2_DBG "very_dirty_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n",
					jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size,
					jeb->unchecked_size, jeb->free_size);
			}
		}

		printk (JFFS2_DBG "Contains %d blocks with total dirty size %u, average dirty size: %u\n",
			numblocks, dirty, dirty / numblocks);
	}

	if (list_empty(&c->dirty_list)) {
		printk(JFFS2_DBG "dirty_list: empty\n");
	} else {
		struct list_head *this;
		int numblocks = 0;
		uint32_t dirty = 0;

		list_for_each(this, &c->dirty_list) {
			struct jffs2_eraseblock *jeb = list_entry(this, struct jffs2_eraseblock, list);

			numblocks ++;
			dirty += jeb->dirty_size;
			if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0)) {
				printk(JFFS2_DBG "dirty_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n",
					jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size,
					jeb->unchecked_size, jeb->free_size);
			}
		}

		printk (JFFS2_DBG "contains %d blocks with total dirty size %u, average dirty size: %u\n",
			numblocks, dirty, dirty / numblocks);
	}

	if (list_empty(&c->erasable_list)) {
		printk(JFFS2_DBG "erasable_list: empty\n");
	} else {
		struct list_head *this;

		list_for_each(this, &c->erasable_list) {
			struct jffs2_eraseblock *jeb = list_entry(this, struct jffs2_eraseblock, list);

			if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0)) {
				printk(JFFS2_DBG "erasable_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n",
					jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size,
					jeb->unchecked_size, jeb->free_size);
			}
		}
	}

	if (list_empty(&c->erasing_list)) {
		printk(JFFS2_DBG "erasing_list: empty\n");
	} else {
		struct list_head *this;

		list_for_each(this, &c->erasing_list) {
			struct jffs2_eraseblock *jeb = list_entry(this, struct jffs2_eraseblock, list);

			if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0)) {
				printk(JFFS2_DBG "erasing_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n",
					jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size,
					jeb->unchecked_size, jeb->free_size);
			}
		}
	}

	if (list_empty(&c->erase_pending_list)) {
		printk(JFFS2_DBG "erase_pending_list: empty\n");
	} else {
		struct list_head *this;

		list_for_each(this, &c->erase_pending_list) {
			struct jffs2_eraseblock *jeb = list_entry(this, struct jffs2_eraseblock, list);

			if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0)) {
				printk(JFFS2_DBG "erase_pending_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n",
					jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size,
					jeb->unchecked_size, jeb->free_size);
			}
		}
	}

	if (list_empty(&c->erasable_pending_wbuf_list)) {
		printk(JFFS2_DBG "erasable_pending_wbuf_list: empty\n");
	} else {
		struct list_head *this;

		list_for_each(this, &c->erasable_pending_wbuf_list) {
			struct jffs2_eraseblock *jeb = list_entry(this, struct jffs2_eraseblock, list);

			if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0)) {
				printk(JFFS2_DBG "erasable_pending_wbuf_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n",
					jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size,
					jeb->unchecked_size, jeb->free_size);
			}
		}
	}

	if (list_empty(&c->free_list)) {
		printk(JFFS2_DBG "free_list: empty\n");
	} else {
		struct list_head *this;

		list_for_each(this, &c->free_list) {
			struct jffs2_eraseblock *jeb = list_entry(this, struct jffs2_eraseblock, list);

			if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0)) {
				printk(JFFS2_DBG "free_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n",
					jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size,
					jeb->unchecked_size, jeb->free_size);
			}
		}
	}

	if (list_empty(&c->bad_list)) {
		printk(JFFS2_DBG "bad_list: empty\n");
	} else {
		struct list_head *this;

		list_for_each(this, &c->bad_list) {
			struct jffs2_eraseblock *jeb = list_entry(this, struct jffs2_eraseblock, list);

			if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0)) {
				printk(JFFS2_DBG "bad_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n",
					jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size,
					jeb->unchecked_size, jeb->free_size);
			}
		}
	}

	if (list_empty(&c->bad_used_list)) {
		printk(JFFS2_DBG "bad_used_list: empty\n");
	} else {
		struct list_head *this;

		list_for_each(this, &c->bad_used_list) {
			struct jffs2_eraseblock *jeb = list_entry(this, struct jffs2_eraseblock, list);

			if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0)) {
				printk(JFFS2_DBG "bad_used_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n",
					jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size,
					jeb->unchecked_size, jeb->free_size);
			}
		}
	}
}

void
__jffs2_dbg_dump_fragtree(struct jffs2_inode_info *f)
{
	down(&f->sem);
	jffs2_dbg_dump_fragtree_nolock(f);
	up(&f->sem);
}

void
__jffs2_dbg_dump_fragtree_nolock(struct jffs2_inode_info *f)
{
	struct jffs2_node_frag *this = frag_first(&f->fragtree);
	uint32_t lastofs = 0;
	int buggy = 0;

	printk(JFFS2_DBG_MSG_PREFIX " dump fragtree of ino #%u\n", f->inocache->ino);
	while(this) {
		if (this->node)
			printk(JFFS2_DBG "frag %#04x-%#04x: %#08x(%d) on flash (*%p), left (%p), right (%p), parent (%p)\n",
				this->ofs, this->ofs+this->size, ref_offset(this->node->raw),
				ref_flags(this->node->raw), this, frag_left(this), frag_right(this),
				frag_parent(this));
		else
			printk(JFFS2_DBG "frag %#04x-%#04x: hole (*%p). left (%p), right (%p), parent (%p)\n",
				this->ofs, this->ofs+this->size, this, frag_left(this),
				frag_right(this), frag_parent(this));
		if (this->ofs != lastofs)
			buggy = 1;
		lastofs = this->ofs + this->size;
		this = frag_next(this);
	}

	if (f->metadata)
		printk(JFFS2_DBG "metadata at 0x%08x\n", ref_offset(f->metadata->raw));

	if (buggy) {
		JFFS2_ERROR("frag tree got a hole in it.\n");
		BUG();
	}
}

#define JFFS2_BUFDUMP_BYTES_PER_LINE	32
void
__jffs2_dbg_dump_buffer(unsigned char *buf, int len, uint32_t offs)
{
	int skip;
	int i;

	printk(JFFS2_DBG_MSG_PREFIX " dump from offset %#08x to offset %#08x (%x bytes).\n",
		offs, offs + len, len);
	i = skip = offs % JFFS2_BUFDUMP_BYTES_PER_LINE;
	offs = offs & ~(JFFS2_BUFDUMP_BYTES_PER_LINE - 1);

	if (skip != 0)
		printk(JFFS2_DBG "%#08x: ", offs);

	while (skip--)
		printk("   ");

	while (i < len) {
		if ((i % JFFS2_BUFDUMP_BYTES_PER_LINE) == 0 && i != len -1) {
			if (i != 0)
				printk("\n");
			offs += JFFS2_BUFDUMP_BYTES_PER_LINE;
			printk(JFFS2_DBG "%0#8x: ", offs);
		}

		printk("%02x ", buf[i]);

		i += 1;
	}

	printk("\n");
}

/*
 * Dump a JFFS2 node.
 */
void
__jffs2_dbg_dump_node(struct jffs2_sb_info *c, uint32_t ofs)
{
	union jffs2_node_union node;
	int len = sizeof(union jffs2_node_union);
	size_t retlen;
	uint32_t crc;
	int ret;

	printk(JFFS2_DBG_MSG_PREFIX " dump node at offset %#08x.\n", ofs);

	ret = jffs2_flash_read(c, ofs, len, &retlen, (unsigned char *)&node);
	if (ret || (retlen != len)) {
		JFFS2_ERROR("read %d bytes failed or short. ret %d, retlen %zd.\n",
			len, ret, retlen);
		return;
	}

	printk(JFFS2_DBG "magic:\t%#04x\n", je16_to_cpu(node.u.magic));
	printk(JFFS2_DBG "nodetype:\t%#04x\n", je16_to_cpu(node.u.nodetype));
	printk(JFFS2_DBG "totlen:\t%#08x\n", je32_to_cpu(node.u.totlen));
	printk(JFFS2_DBG "hdr_crc:\t%#08x\n", je32_to_cpu(node.u.hdr_crc));

	crc = crc32(0, &node.u, sizeof(node.u) - 4);
	if (crc != je32_to_cpu(node.u.hdr_crc)) {
		JFFS2_ERROR("wrong common header CRC.\n");
		return;
	}

	if (je16_to_cpu(node.u.magic) != JFFS2_MAGIC_BITMASK &&
		je16_to_cpu(node.u.magic) != JFFS2_OLD_MAGIC_BITMASK)
	{
		JFFS2_ERROR("wrong node magic: %#04x instead of %#04x.\n",
			je16_to_cpu(node.u.magic), JFFS2_MAGIC_BITMASK);
		return;
	}

	switch(je16_to_cpu(node.u.nodetype)) {

	case JFFS2_NODETYPE_INODE:

		printk(JFFS2_DBG "the node is inode node\n");
		printk(JFFS2_DBG "ino:\t%#08x\n", je32_to_cpu(node.i.ino));
		printk(JFFS2_DBG "version:\t%#08x\n", je32_to_cpu(node.i.version));
		printk(JFFS2_DBG "mode:\t%#08x\n", node.i.mode.m);
		printk(JFFS2_DBG "uid:\t%#04x\n", je16_to_cpu(node.i.uid));
		printk(JFFS2_DBG "gid:\t%#04x\n", je16_to_cpu(node.i.gid));
		printk(JFFS2_DBG "isize:\t%#08x\n", je32_to_cpu(node.i.isize));
		printk(JFFS2_DBG "atime:\t%#08x\n", je32_to_cpu(node.i.atime));
		printk(JFFS2_DBG "mtime:\t%#08x\n", je32_to_cpu(node.i.mtime));
		printk(JFFS2_DBG "ctime:\t%#08x\n", je32_to_cpu(node.i.ctime));
		printk(JFFS2_DBG "offset:\t%#08x\n", je32_to_cpu(node.i.offset));
		printk(JFFS2_DBG "csize:\t%#08x\n", je32_to_cpu(node.i.csize));
		printk(JFFS2_DBG "dsize:\t%#08x\n", je32_to_cpu(node.i.dsize));
		printk(JFFS2_DBG "compr:\t%#02x\n", node.i.compr);
		printk(JFFS2_DBG "usercompr:\t%#02x\n", node.i.usercompr);
		printk(JFFS2_DBG "flags:\t%#04x\n", je16_to_cpu(node.i.flags));
		printk(JFFS2_DBG "data_crc:\t%#08x\n", je32_to_cpu(node.i.data_crc));
		printk(JFFS2_DBG "node_crc:\t%#08x\n", je32_to_cpu(node.i.node_crc));

		crc = crc32(0, &node.i, sizeof(node.i) - 8);
		if (crc != je32_to_cpu(node.i.node_crc)) {
			JFFS2_ERROR("wrong node header CRC.\n");
			return;
		}
		break;

	case JFFS2_NODETYPE_DIRENT:

		printk(JFFS2_DBG "the node is dirent node\n");
		printk(JFFS2_DBG "pino:\t%#08x\n", je32_to_cpu(node.d.pino));
		printk(JFFS2_DBG "version:\t%#08x\n", je32_to_cpu(node.d.version));
		printk(JFFS2_DBG "ino:\t%#08x\n", je32_to_cpu(node.d.ino));
		printk(JFFS2_DBG "mctime:\t%#08x\n", je32_to_cpu(node.d.mctime));
		printk(JFFS2_DBG "nsize:\t%#02x\n", node.d.nsize);
		printk(JFFS2_DBG "type:\t%#02x\n", node.d.type);
		printk(JFFS2_DBG "node_crc:\t%#08x\n", je32_to_cpu(node.d.node_crc));
		printk(JFFS2_DBG "name_crc:\t%#08x\n", je32_to_cpu(node.d.name_crc));

		node.d.name[node.d.nsize] = '\0';
		printk(JFFS2_DBG "name:\t\"%s\"\n", node.d.name);

		crc = crc32(0, &node.d, sizeof(node.d) - 8);
		if (crc != je32_to_cpu(node.d.node_crc)) {
			JFFS2_ERROR("wrong node header CRC.\n");
			return;
		}
		break;

	default:
		printk(JFFS2_DBG "node type is unknown\n");
		break;
	}
}
#endif /* JFFS2_DBG_DUMPS || JFFS2_DBG_PARANOIA_CHECKS */