ubifs: Fail commit if TNC is obviously inconsistent

A reference to LEB 0 or with length 0 in the TNC
is never correct and could be caused by a memory corruption.
Don't write such a bad index node to the MTD.
Instead fail the commit which will turn UBIFS into read-only mode.

This is less painful than having the bad reference on the MTD
from where UBFIS has no chance to recover.
Signed-off-by: NRichard Weinberger <richard@nod.at>
上级 319c1042
无相关合并请求
......@@ -57,6 +57,8 @@ static int make_idx_node(struct ubifs_info *c, struct ubifs_idx_node *idx,
ubifs_dump_znode(c, znode);
if (zbr->znode)
ubifs_dump_znode(c, zbr->znode);
return -EINVAL;
}
}
ubifs_prepare_node(c, idx, len, 0);
......@@ -859,6 +861,8 @@ static int write_index(struct ubifs_info *c)
ubifs_dump_znode(c, znode);
if (zbr->znode)
ubifs_dump_znode(c, zbr->znode);
return -EINVAL;
}
}
len = ubifs_idx_node_sz(c, znode->child_cnt);
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册
反馈
建议
客服 返回
顶部