C++ (Cpp) ntfs_icx_ib_writeの例

コード例 #1

ファイル: index.c プロジェクト: rass89rus/hikvision-source

/*static JPA*/
int ntfs_index_rm(ntfs_index_context *icx)
{
	INDEX_HEADER *ih = NULL;
	int err, ret = STATUS_OK;

	ntfs_log_trace("Entering\n");
	
	if (!icx || (!icx->ib && !icx->ir) || ntfs_ie_end(icx->entry)) {
		ntfs_log_error("Invalid arguments.\n");
		errno = EINVAL;
		goto err_out;
	}
	if (icx->is_in_root)
		ih = &icx->ir->index;
	else
		ih = &icx->ib->index;
	if(NULL == ih)
	{
        errno = EINVAL;
		goto err_out;
	}
	if (icx->entry->ie_flags & INDEX_ENTRY_NODE) {
		
		ret = ntfs_index_rm_node(icx);

	} else if (icx->is_in_root || !ntfs_ih_one_entry(ih)) {
		
		ntfs_ie_delete(ih, icx->entry);
		
		if (icx->is_in_root) {
			err = ntfs_ir_truncate(icx, le32_to_cpu(ih->index_length));
			if (err != STATUS_OK)
				goto err_out;
		} else
			if (ntfs_icx_ib_write(icx))
				goto err_out;
	} else {
		if (ntfs_index_rm_leaf(icx))
			goto err_out;
	}
out:
	return ret;
err_out:
	ret = STATUS_ERROR;
	goto out;
}

コード例 #2

ファイル: index.c プロジェクト: AllardJ/Tomato

static int ntfs_index_rm_node(ntfs_index_context *icx)
{
	int entry_pos, pindex;
	VCN vcn;
	INDEX_BLOCK *ib = NULL;
	INDEX_ENTRY *ie_succ, *ie, *entry = icx->entry;
	INDEX_HEADER *ih;
	u32 new_size;
	int delta, ret = STATUS_ERROR;

	ntfs_log_trace("Entering\n");
	
	if (!icx->ia_na) {
		icx->ia_na = ntfs_ia_open(icx, icx->ni);
		if (!icx->ia_na)
			return STATUS_ERROR;
	}

	ib = ntfs_malloc(icx->block_size);
	if (!ib)
		return STATUS_ERROR;
	
	ie_succ = ntfs_ie_get_next(icx->entry);
	entry_pos = icx->parent_pos[icx->pindex]++;
	pindex = icx->pindex;
descend:
	vcn = ntfs_ie_get_vcn(ie_succ);
	if (ntfs_ib_read(icx, vcn, ib))
		goto out;
	
	ie_succ = ntfs_ie_get_first(&ib->index);

	if (ntfs_icx_parent_inc(icx))
		goto out;
	
	icx->parent_vcn[icx->pindex] = vcn;
	icx->parent_pos[icx->pindex] = 0;

	if ((ib->index.ih_flags & NODE_MASK) == INDEX_NODE)
		goto descend;

	if (ntfs_ih_zero_entry(&ib->index)) {
		errno = EIO;
		ntfs_log_perror("Empty index block");
		goto out;
	}

	ie = ntfs_ie_dup(ie_succ);
	if (!ie)
		goto out;
	
	if (ntfs_ie_add_vcn(&ie))
		goto out2;

	ntfs_ie_set_vcn(ie, ntfs_ie_get_vcn(icx->entry));

	if (icx->is_in_root)
		ih = &icx->ir->index;
	else
		ih = &icx->ib->index;

	delta = le16_to_cpu(ie->length) - le16_to_cpu(icx->entry->length);
	new_size = le32_to_cpu(ih->index_length) + delta;
	if (delta > 0) {
		if (icx->is_in_root) {
			ret = ntfs_ir_make_space(icx, new_size);
			if (ret != STATUS_OK)
				goto out2;
			
			ih = &icx->ir->index;
			entry = ntfs_ie_get_by_pos(ih, entry_pos);
			
		} else if (new_size > le32_to_cpu(ih->allocated_size)) {
			icx->pindex = pindex;
			ret = ntfs_ib_split(icx, icx->ib);
			if (ret == STATUS_OK)
				ret = STATUS_KEEP_SEARCHING;
			goto out2;
		}
	}

	ntfs_ie_delete(ih, entry);
	ntfs_ie_insert(ih, ie, entry);
	
	if (icx->is_in_root) {
		if (ntfs_ir_truncate(icx, new_size))
			goto out2;
	} else
		if (ntfs_icx_ib_write(icx))
			goto out2;
	
	ntfs_ie_delete(&ib->index, ie_succ);
	
	if (ntfs_ih_zero_entry(&ib->index)) {
		if (ntfs_index_rm_leaf(icx))
			goto out2;
	} else 
		if (ntfs_ib_write(icx, ib))
			goto out2;

	ret = STATUS_OK;
out2:
	free(ie);
out:
	free(ib);
	return ret;
}