2008-07-14 23:08:37 +07:00
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/*
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* This file is part of UBIFS.
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*
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* Copyright (C) 2006-2008 Nokia Corporation
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 51
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* Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Authors: Artem Bityutskiy (Битюцкий Артём)
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* Adrian Hunter
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*/
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/*
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* This file implements most of the debugging stuff which is compiled in only
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* when it is enabled. But some debugging check functions are implemented in
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* corresponding subsystem, just because they are closely related and utilize
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* various local functions of those subsystems.
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*/
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#define UBIFS_DBG_PRESERVE_UBI
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#include "ubifs.h"
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#ifdef CONFIG_UBIFS_FS_DEBUG
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DEFINE_SPINLOCK(dbg_lock);
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static char dbg_key_buf0[128];
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static char dbg_key_buf1[128];
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unsigned int ubifs_msg_flags = UBIFS_MSG_FLAGS_DEFAULT;
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unsigned int ubifs_chk_flags = UBIFS_CHK_FLAGS_DEFAULT;
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unsigned int ubifs_tst_flags;
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module_param_named(debug_msgs, ubifs_msg_flags, uint, S_IRUGO | S_IWUSR);
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module_param_named(debug_chks, ubifs_chk_flags, uint, S_IRUGO | S_IWUSR);
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module_param_named(debug_tsts, ubifs_tst_flags, uint, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(debug_msgs, "Debug message type flags");
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MODULE_PARM_DESC(debug_chks, "Debug check flags");
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MODULE_PARM_DESC(debug_tsts, "Debug special test flags");
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static const char *get_key_fmt(int fmt)
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{
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switch (fmt) {
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case UBIFS_SIMPLE_KEY_FMT:
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return "simple";
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default:
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return "unknown/invalid format";
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}
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}
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static const char *get_key_hash(int hash)
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{
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switch (hash) {
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case UBIFS_KEY_HASH_R5:
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return "R5";
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case UBIFS_KEY_HASH_TEST:
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return "test";
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default:
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return "unknown/invalid name hash";
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}
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}
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static const char *get_key_type(int type)
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{
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switch (type) {
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case UBIFS_INO_KEY:
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return "inode";
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case UBIFS_DENT_KEY:
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return "direntry";
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case UBIFS_XENT_KEY:
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return "xentry";
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case UBIFS_DATA_KEY:
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return "data";
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case UBIFS_TRUN_KEY:
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return "truncate";
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default:
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return "unknown/invalid key";
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}
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}
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static void sprintf_key(const struct ubifs_info *c, const union ubifs_key *key,
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char *buffer)
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{
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char *p = buffer;
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int type = key_type(c, key);
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if (c->key_fmt == UBIFS_SIMPLE_KEY_FMT) {
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switch (type) {
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case UBIFS_INO_KEY:
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sprintf(p, "(%lu, %s)", key_inum(c, key),
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get_key_type(type));
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break;
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case UBIFS_DENT_KEY:
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case UBIFS_XENT_KEY:
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sprintf(p, "(%lu, %s, %#08x)", key_inum(c, key),
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get_key_type(type), key_hash(c, key));
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break;
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case UBIFS_DATA_KEY:
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sprintf(p, "(%lu, %s, %u)", key_inum(c, key),
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get_key_type(type), key_block(c, key));
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break;
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case UBIFS_TRUN_KEY:
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sprintf(p, "(%lu, %s)",
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key_inum(c, key), get_key_type(type));
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break;
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default:
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sprintf(p, "(bad key type: %#08x, %#08x)",
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key->u32[0], key->u32[1]);
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}
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} else
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sprintf(p, "bad key format %d", c->key_fmt);
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}
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const char *dbg_key_str0(const struct ubifs_info *c, const union ubifs_key *key)
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{
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/* dbg_lock must be held */
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sprintf_key(c, key, dbg_key_buf0);
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return dbg_key_buf0;
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}
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const char *dbg_key_str1(const struct ubifs_info *c, const union ubifs_key *key)
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{
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/* dbg_lock must be held */
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sprintf_key(c, key, dbg_key_buf1);
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return dbg_key_buf1;
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}
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const char *dbg_ntype(int type)
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{
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switch (type) {
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case UBIFS_PAD_NODE:
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return "padding node";
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case UBIFS_SB_NODE:
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return "superblock node";
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case UBIFS_MST_NODE:
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return "master node";
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case UBIFS_REF_NODE:
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return "reference node";
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case UBIFS_INO_NODE:
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return "inode node";
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case UBIFS_DENT_NODE:
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return "direntry node";
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case UBIFS_XENT_NODE:
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return "xentry node";
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case UBIFS_DATA_NODE:
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return "data node";
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case UBIFS_TRUN_NODE:
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return "truncate node";
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case UBIFS_IDX_NODE:
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return "indexing node";
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case UBIFS_CS_NODE:
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return "commit start node";
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case UBIFS_ORPH_NODE:
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return "orphan node";
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default:
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return "unknown node";
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}
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}
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static const char *dbg_gtype(int type)
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{
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switch (type) {
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case UBIFS_NO_NODE_GROUP:
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return "no node group";
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case UBIFS_IN_NODE_GROUP:
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return "in node group";
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case UBIFS_LAST_OF_NODE_GROUP:
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return "last of node group";
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default:
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return "unknown";
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}
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}
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const char *dbg_cstate(int cmt_state)
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{
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switch (cmt_state) {
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case COMMIT_RESTING:
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return "commit resting";
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case COMMIT_BACKGROUND:
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return "background commit requested";
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case COMMIT_REQUIRED:
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return "commit required";
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case COMMIT_RUNNING_BACKGROUND:
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return "BACKGROUND commit running";
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case COMMIT_RUNNING_REQUIRED:
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return "commit running and required";
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case COMMIT_BROKEN:
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return "broken commit";
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default:
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return "unknown commit state";
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}
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}
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static void dump_ch(const struct ubifs_ch *ch)
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{
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printk(KERN_DEBUG "\tmagic %#x\n", le32_to_cpu(ch->magic));
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printk(KERN_DEBUG "\tcrc %#x\n", le32_to_cpu(ch->crc));
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printk(KERN_DEBUG "\tnode_type %d (%s)\n", ch->node_type,
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dbg_ntype(ch->node_type));
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printk(KERN_DEBUG "\tgroup_type %d (%s)\n", ch->group_type,
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dbg_gtype(ch->group_type));
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printk(KERN_DEBUG "\tsqnum %llu\n",
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(unsigned long long)le64_to_cpu(ch->sqnum));
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printk(KERN_DEBUG "\tlen %u\n", le32_to_cpu(ch->len));
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}
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void dbg_dump_inode(const struct ubifs_info *c, const struct inode *inode)
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{
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const struct ubifs_inode *ui = ubifs_inode(inode);
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printk(KERN_DEBUG "inode %lu\n", inode->i_ino);
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printk(KERN_DEBUG "size %llu\n",
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(unsigned long long)i_size_read(inode));
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printk(KERN_DEBUG "nlink %u\n", inode->i_nlink);
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printk(KERN_DEBUG "uid %u\n", (unsigned int)inode->i_uid);
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printk(KERN_DEBUG "gid %u\n", (unsigned int)inode->i_gid);
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printk(KERN_DEBUG "atime %u.%u\n",
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(unsigned int)inode->i_atime.tv_sec,
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(unsigned int)inode->i_atime.tv_nsec);
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printk(KERN_DEBUG "mtime %u.%u\n",
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(unsigned int)inode->i_mtime.tv_sec,
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(unsigned int)inode->i_mtime.tv_nsec);
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printk(KERN_DEBUG "ctime %u.%u\n",
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(unsigned int)inode->i_ctime.tv_sec,
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(unsigned int)inode->i_ctime.tv_nsec);
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printk(KERN_DEBUG "creat_sqnum %llu\n", ui->creat_sqnum);
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printk(KERN_DEBUG "xattr_size %u\n", ui->xattr_size);
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printk(KERN_DEBUG "xattr_cnt %u\n", ui->xattr_cnt);
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printk(KERN_DEBUG "xattr_names %u\n", ui->xattr_names);
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printk(KERN_DEBUG "dirty %u\n", ui->dirty);
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printk(KERN_DEBUG "xattr %u\n", ui->xattr);
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printk(KERN_DEBUG "flags %d\n", ui->flags);
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printk(KERN_DEBUG "compr_type %d\n", ui->compr_type);
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printk(KERN_DEBUG "data_len %d\n", ui->data_len);
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}
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void dbg_dump_node(const struct ubifs_info *c, const void *node)
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{
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int i, n;
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union ubifs_key key;
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const struct ubifs_ch *ch = node;
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if (dbg_failure_mode)
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return;
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/* If the magic is incorrect, just hexdump the first bytes */
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if (le32_to_cpu(ch->magic) != UBIFS_NODE_MAGIC) {
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printk(KERN_DEBUG "Not a node, first %zu bytes:", UBIFS_CH_SZ);
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print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1,
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(void *)node, UBIFS_CH_SZ, 1);
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return;
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}
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spin_lock(&dbg_lock);
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dump_ch(node);
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switch (ch->node_type) {
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case UBIFS_PAD_NODE:
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{
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const struct ubifs_pad_node *pad = node;
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printk(KERN_DEBUG "\tpad_len %u\n",
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le32_to_cpu(pad->pad_len));
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break;
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}
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case UBIFS_SB_NODE:
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{
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const struct ubifs_sb_node *sup = node;
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unsigned int sup_flags = le32_to_cpu(sup->flags);
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printk(KERN_DEBUG "\tkey_hash %d (%s)\n",
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(int)sup->key_hash, get_key_hash(sup->key_hash));
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printk(KERN_DEBUG "\tkey_fmt %d (%s)\n",
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(int)sup->key_fmt, get_key_fmt(sup->key_fmt));
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printk(KERN_DEBUG "\tflags %#x\n", sup_flags);
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printk(KERN_DEBUG "\t big_lpt %u\n",
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!!(sup_flags & UBIFS_FLG_BIGLPT));
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printk(KERN_DEBUG "\tmin_io_size %u\n",
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le32_to_cpu(sup->min_io_size));
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printk(KERN_DEBUG "\tleb_size %u\n",
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le32_to_cpu(sup->leb_size));
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printk(KERN_DEBUG "\tleb_cnt %u\n",
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le32_to_cpu(sup->leb_cnt));
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printk(KERN_DEBUG "\tmax_leb_cnt %u\n",
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le32_to_cpu(sup->max_leb_cnt));
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printk(KERN_DEBUG "\tmax_bud_bytes %llu\n",
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(unsigned long long)le64_to_cpu(sup->max_bud_bytes));
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printk(KERN_DEBUG "\tlog_lebs %u\n",
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le32_to_cpu(sup->log_lebs));
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printk(KERN_DEBUG "\tlpt_lebs %u\n",
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le32_to_cpu(sup->lpt_lebs));
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printk(KERN_DEBUG "\torph_lebs %u\n",
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le32_to_cpu(sup->orph_lebs));
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printk(KERN_DEBUG "\tjhead_cnt %u\n",
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|
|
le32_to_cpu(sup->jhead_cnt));
|
|
|
|
|
printk(KERN_DEBUG "\tfanout %u\n",
|
|
|
|
|
le32_to_cpu(sup->fanout));
|
|
|
|
|
printk(KERN_DEBUG "\tlsave_cnt %u\n",
|
|
|
|
|
le32_to_cpu(sup->lsave_cnt));
|
|
|
|
|
printk(KERN_DEBUG "\tdefault_compr %u\n",
|
|
|
|
|
(int)le16_to_cpu(sup->default_compr));
|
|
|
|
|
printk(KERN_DEBUG "\trp_size %llu\n",
|
|
|
|
|
(unsigned long long)le64_to_cpu(sup->rp_size));
|
|
|
|
|
printk(KERN_DEBUG "\trp_uid %u\n",
|
|
|
|
|
le32_to_cpu(sup->rp_uid));
|
|
|
|
|
printk(KERN_DEBUG "\trp_gid %u\n",
|
|
|
|
|
le32_to_cpu(sup->rp_gid));
|
|
|
|
|
printk(KERN_DEBUG "\tfmt_version %u\n",
|
|
|
|
|
le32_to_cpu(sup->fmt_version));
|
|
|
|
|
printk(KERN_DEBUG "\ttime_gran %u\n",
|
|
|
|
|
le32_to_cpu(sup->time_gran));
|
|
|
|
|
printk(KERN_DEBUG "\tUUID %02X%02X%02X%02X-%02X%02X"
|
|
|
|
|
"-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X\n",
|
|
|
|
|
sup->uuid[0], sup->uuid[1], sup->uuid[2], sup->uuid[3],
|
|
|
|
|
sup->uuid[4], sup->uuid[5], sup->uuid[6], sup->uuid[7],
|
|
|
|
|
sup->uuid[8], sup->uuid[9], sup->uuid[10], sup->uuid[11],
|
|
|
|
|
sup->uuid[12], sup->uuid[13], sup->uuid[14],
|
|
|
|
|
sup->uuid[15]);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
case UBIFS_MST_NODE:
|
|
|
|
|
{
|
|
|
|
|
const struct ubifs_mst_node *mst = node;
|
|
|
|
|
|
|
|
|
|
printk(KERN_DEBUG "\thighest_inum %llu\n",
|
|
|
|
|
(unsigned long long)le64_to_cpu(mst->highest_inum));
|
|
|
|
|
printk(KERN_DEBUG "\tcommit number %llu\n",
|
|
|
|
|
(unsigned long long)le64_to_cpu(mst->cmt_no));
|
|
|
|
|
printk(KERN_DEBUG "\tflags %#x\n",
|
|
|
|
|
le32_to_cpu(mst->flags));
|
|
|
|
|
printk(KERN_DEBUG "\tlog_lnum %u\n",
|
|
|
|
|
le32_to_cpu(mst->log_lnum));
|
|
|
|
|
printk(KERN_DEBUG "\troot_lnum %u\n",
|
|
|
|
|
le32_to_cpu(mst->root_lnum));
|
|
|
|
|
printk(KERN_DEBUG "\troot_offs %u\n",
|
|
|
|
|
le32_to_cpu(mst->root_offs));
|
|
|
|
|
printk(KERN_DEBUG "\troot_len %u\n",
|
|
|
|
|
le32_to_cpu(mst->root_len));
|
|
|
|
|
printk(KERN_DEBUG "\tgc_lnum %u\n",
|
|
|
|
|
le32_to_cpu(mst->gc_lnum));
|
|
|
|
|
printk(KERN_DEBUG "\tihead_lnum %u\n",
|
|
|
|
|
le32_to_cpu(mst->ihead_lnum));
|
|
|
|
|
printk(KERN_DEBUG "\tihead_offs %u\n",
|
|
|
|
|
le32_to_cpu(mst->ihead_offs));
|
|
|
|
|
printk(KERN_DEBUG "\tindex_size %u\n",
|
|
|
|
|
le32_to_cpu(mst->index_size));
|
|
|
|
|
printk(KERN_DEBUG "\tlpt_lnum %u\n",
|
|
|
|
|
le32_to_cpu(mst->lpt_lnum));
|
|
|
|
|
printk(KERN_DEBUG "\tlpt_offs %u\n",
|
|
|
|
|
le32_to_cpu(mst->lpt_offs));
|
|
|
|
|
printk(KERN_DEBUG "\tnhead_lnum %u\n",
|
|
|
|
|
le32_to_cpu(mst->nhead_lnum));
|
|
|
|
|
printk(KERN_DEBUG "\tnhead_offs %u\n",
|
|
|
|
|
le32_to_cpu(mst->nhead_offs));
|
|
|
|
|
printk(KERN_DEBUG "\tltab_lnum %u\n",
|
|
|
|
|
le32_to_cpu(mst->ltab_lnum));
|
|
|
|
|
printk(KERN_DEBUG "\tltab_offs %u\n",
|
|
|
|
|
le32_to_cpu(mst->ltab_offs));
|
|
|
|
|
printk(KERN_DEBUG "\tlsave_lnum %u\n",
|
|
|
|
|
le32_to_cpu(mst->lsave_lnum));
|
|
|
|
|
printk(KERN_DEBUG "\tlsave_offs %u\n",
|
|
|
|
|
le32_to_cpu(mst->lsave_offs));
|
|
|
|
|
printk(KERN_DEBUG "\tlscan_lnum %u\n",
|
|
|
|
|
le32_to_cpu(mst->lscan_lnum));
|
|
|
|
|
printk(KERN_DEBUG "\tleb_cnt %u\n",
|
|
|
|
|
le32_to_cpu(mst->leb_cnt));
|
|
|
|
|
printk(KERN_DEBUG "\tempty_lebs %u\n",
|
|
|
|
|
le32_to_cpu(mst->empty_lebs));
|
|
|
|
|
printk(KERN_DEBUG "\tidx_lebs %u\n",
|
|
|
|
|
le32_to_cpu(mst->idx_lebs));
|
|
|
|
|
printk(KERN_DEBUG "\ttotal_free %llu\n",
|
|
|
|
|
(unsigned long long)le64_to_cpu(mst->total_free));
|
|
|
|
|
printk(KERN_DEBUG "\ttotal_dirty %llu\n",
|
|
|
|
|
(unsigned long long)le64_to_cpu(mst->total_dirty));
|
|
|
|
|
printk(KERN_DEBUG "\ttotal_used %llu\n",
|
|
|
|
|
(unsigned long long)le64_to_cpu(mst->total_used));
|
|
|
|
|
printk(KERN_DEBUG "\ttotal_dead %llu\n",
|
|
|
|
|
(unsigned long long)le64_to_cpu(mst->total_dead));
|
|
|
|
|
printk(KERN_DEBUG "\ttotal_dark %llu\n",
|
|
|
|
|
(unsigned long long)le64_to_cpu(mst->total_dark));
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
case UBIFS_REF_NODE:
|
|
|
|
|
{
|
|
|
|
|
const struct ubifs_ref_node *ref = node;
|
|
|
|
|
|
|
|
|
|
printk(KERN_DEBUG "\tlnum %u\n",
|
|
|
|
|
le32_to_cpu(ref->lnum));
|
|
|
|
|
printk(KERN_DEBUG "\toffs %u\n",
|
|
|
|
|
le32_to_cpu(ref->offs));
|
|
|
|
|
printk(KERN_DEBUG "\tjhead %u\n",
|
|
|
|
|
le32_to_cpu(ref->jhead));
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
case UBIFS_INO_NODE:
|
|
|
|
|
{
|
|
|
|
|
const struct ubifs_ino_node *ino = node;
|
|
|
|
|
|
|
|
|
|
key_read(c, &ino->key, &key);
|
|
|
|
|
printk(KERN_DEBUG "\tkey %s\n", DBGKEY(&key));
|
|
|
|
|
printk(KERN_DEBUG "\tcreat_sqnum %llu\n",
|
|
|
|
|
(unsigned long long)le64_to_cpu(ino->creat_sqnum));
|
|
|
|
|
printk(KERN_DEBUG "\tsize %llu\n",
|
|
|
|
|
(unsigned long long)le64_to_cpu(ino->size));
|
|
|
|
|
printk(KERN_DEBUG "\tnlink %u\n",
|
|
|
|
|
le32_to_cpu(ino->nlink));
|
|
|
|
|
printk(KERN_DEBUG "\tatime %lld.%u\n",
|
|
|
|
|
(long long)le64_to_cpu(ino->atime_sec),
|
|
|
|
|
le32_to_cpu(ino->atime_nsec));
|
|
|
|
|
printk(KERN_DEBUG "\tmtime %lld.%u\n",
|
|
|
|
|
(long long)le64_to_cpu(ino->mtime_sec),
|
|
|
|
|
le32_to_cpu(ino->mtime_nsec));
|
|
|
|
|
printk(KERN_DEBUG "\tctime %lld.%u\n",
|
|
|
|
|
(long long)le64_to_cpu(ino->ctime_sec),
|
|
|
|
|
le32_to_cpu(ino->ctime_nsec));
|
|
|
|
|
printk(KERN_DEBUG "\tuid %u\n",
|
|
|
|
|
le32_to_cpu(ino->uid));
|
|
|
|
|
printk(KERN_DEBUG "\tgid %u\n",
|
|
|
|
|
le32_to_cpu(ino->gid));
|
|
|
|
|
printk(KERN_DEBUG "\tmode %u\n",
|
|
|
|
|
le32_to_cpu(ino->mode));
|
|
|
|
|
printk(KERN_DEBUG "\tflags %#x\n",
|
|
|
|
|
le32_to_cpu(ino->flags));
|
|
|
|
|
printk(KERN_DEBUG "\txattr_cnt %u\n",
|
|
|
|
|
le32_to_cpu(ino->xattr_cnt));
|
|
|
|
|
printk(KERN_DEBUG "\txattr_size %u\n",
|
|
|
|
|
le32_to_cpu(ino->xattr_size));
|
|
|
|
|
printk(KERN_DEBUG "\txattr_names %u\n",
|
|
|
|
|
le32_to_cpu(ino->xattr_names));
|
|
|
|
|
printk(KERN_DEBUG "\tcompr_type %#x\n",
|
|
|
|
|
(int)le16_to_cpu(ino->compr_type));
|
|
|
|
|
printk(KERN_DEBUG "\tdata len %u\n",
|
|
|
|
|
le32_to_cpu(ino->data_len));
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
case UBIFS_DENT_NODE:
|
|
|
|
|
case UBIFS_XENT_NODE:
|
|
|
|
|
{
|
|
|
|
|
const struct ubifs_dent_node *dent = node;
|
|
|
|
|
int nlen = le16_to_cpu(dent->nlen);
|
|
|
|
|
|
|
|
|
|
key_read(c, &dent->key, &key);
|
|
|
|
|
printk(KERN_DEBUG "\tkey %s\n", DBGKEY(&key));
|
|
|
|
|
printk(KERN_DEBUG "\tinum %llu\n",
|
|
|
|
|
(unsigned long long)le64_to_cpu(dent->inum));
|
|
|
|
|
printk(KERN_DEBUG "\ttype %d\n", (int)dent->type);
|
|
|
|
|
printk(KERN_DEBUG "\tnlen %d\n", nlen);
|
|
|
|
|
printk(KERN_DEBUG "\tname ");
|
|
|
|
|
|
|
|
|
|
if (nlen > UBIFS_MAX_NLEN)
|
|
|
|
|
printk(KERN_DEBUG "(bad name length, not printing, "
|
|
|
|
|
"bad or corrupted node)");
|
|
|
|
|
else {
|
|
|
|
|
for (i = 0; i < nlen && dent->name[i]; i++)
|
|
|
|
|
printk("%c", dent->name[i]);
|
|
|
|
|
}
|
|
|
|
|
printk("\n");
|
|
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
case UBIFS_DATA_NODE:
|
|
|
|
|
{
|
|
|
|
|
const struct ubifs_data_node *dn = node;
|
|
|
|
|
int dlen = le32_to_cpu(ch->len) - UBIFS_DATA_NODE_SZ;
|
|
|
|
|
|
|
|
|
|
key_read(c, &dn->key, &key);
|
|
|
|
|
printk(KERN_DEBUG "\tkey %s\n", DBGKEY(&key));
|
|
|
|
|
printk(KERN_DEBUG "\tsize %u\n",
|
|
|
|
|
le32_to_cpu(dn->size));
|
|
|
|
|
printk(KERN_DEBUG "\tcompr_typ %d\n",
|
|
|
|
|
(int)le16_to_cpu(dn->compr_type));
|
|
|
|
|
printk(KERN_DEBUG "\tdata size %d\n",
|
|
|
|
|
dlen);
|
|
|
|
|
printk(KERN_DEBUG "\tdata:\n");
|
|
|
|
|
print_hex_dump(KERN_DEBUG, "\t", DUMP_PREFIX_OFFSET, 32, 1,
|
|
|
|
|
(void *)&dn->data, dlen, 0);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
case UBIFS_TRUN_NODE:
|
|
|
|
|
{
|
|
|
|
|
const struct ubifs_trun_node *trun = node;
|
|
|
|
|
|
|
|
|
|
printk(KERN_DEBUG "\tinum %u\n",
|
|
|
|
|
le32_to_cpu(trun->inum));
|
|
|
|
|
printk(KERN_DEBUG "\told_size %llu\n",
|
|
|
|
|
(unsigned long long)le64_to_cpu(trun->old_size));
|
|
|
|
|
printk(KERN_DEBUG "\tnew_size %llu\n",
|
|
|
|
|
(unsigned long long)le64_to_cpu(trun->new_size));
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
case UBIFS_IDX_NODE:
|
|
|
|
|
{
|
|
|
|
|
const struct ubifs_idx_node *idx = node;
|
|
|
|
|
|
|
|
|
|
n = le16_to_cpu(idx->child_cnt);
|
|
|
|
|
printk(KERN_DEBUG "\tchild_cnt %d\n", n);
|
|
|
|
|
printk(KERN_DEBUG "\tlevel %d\n",
|
|
|
|
|
(int)le16_to_cpu(idx->level));
|
|
|
|
|
printk(KERN_DEBUG "\tBranches:\n");
|
|
|
|
|
|
|
|
|
|
for (i = 0; i < n && i < c->fanout - 1; i++) {
|
|
|
|
|
const struct ubifs_branch *br;
|
|
|
|
|
|
|
|
|
|
br = ubifs_idx_branch(c, idx, i);
|
|
|
|
|
key_read(c, &br->key, &key);
|
|
|
|
|
printk(KERN_DEBUG "\t%d: LEB %d:%d len %d key %s\n",
|
|
|
|
|
i, le32_to_cpu(br->lnum), le32_to_cpu(br->offs),
|
|
|
|
|
le32_to_cpu(br->len), DBGKEY(&key));
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
case UBIFS_CS_NODE:
|
|
|
|
|
break;
|
|
|
|
|
case UBIFS_ORPH_NODE:
|
|
|
|
|
{
|
|
|
|
|
const struct ubifs_orph_node *orph = node;
|
|
|
|
|
|
|
|
|
|
printk(KERN_DEBUG "\tcommit number %llu\n",
|
|
|
|
|
(unsigned long long)
|
|
|
|
|
le64_to_cpu(orph->cmt_no) & LLONG_MAX);
|
|
|
|
|
printk(KERN_DEBUG "\tlast node flag %llu\n",
|
|
|
|
|
(unsigned long long)(le64_to_cpu(orph->cmt_no)) >> 63);
|
|
|
|
|
n = (le32_to_cpu(ch->len) - UBIFS_ORPH_NODE_SZ) >> 3;
|
|
|
|
|
printk(KERN_DEBUG "\t%d orphan inode numbers:\n", n);
|
|
|
|
|
for (i = 0; i < n; i++)
|
|
|
|
|
printk(KERN_DEBUG "\t ino %llu\n",
|
|
|
|
|
le64_to_cpu(orph->inos[i]));
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
default:
|
|
|
|
|
printk(KERN_DEBUG "node type %d was not recognized\n",
|
|
|
|
|
(int)ch->node_type);
|
|
|
|
|
}
|
|
|
|
|
spin_unlock(&dbg_lock);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void dbg_dump_budget_req(const struct ubifs_budget_req *req)
|
|
|
|
|
{
|
|
|
|
|
spin_lock(&dbg_lock);
|
|
|
|
|
printk(KERN_DEBUG "Budgeting request: new_ino %d, dirtied_ino %d\n",
|
|
|
|
|
req->new_ino, req->dirtied_ino);
|
|
|
|
|
printk(KERN_DEBUG "\tnew_ino_d %d, dirtied_ino_d %d\n",
|
|
|
|
|
req->new_ino_d, req->dirtied_ino_d);
|
|
|
|
|
printk(KERN_DEBUG "\tnew_page %d, dirtied_page %d\n",
|
|
|
|
|
req->new_page, req->dirtied_page);
|
|
|
|
|
printk(KERN_DEBUG "\tnew_dent %d, mod_dent %d\n",
|
|
|
|
|
req->new_dent, req->mod_dent);
|
|
|
|
|
printk(KERN_DEBUG "\tidx_growth %d\n", req->idx_growth);
|
|
|
|
|
printk(KERN_DEBUG "\tdata_growth %d dd_growth %d\n",
|
|
|
|
|
req->data_growth, req->dd_growth);
|
|
|
|
|
spin_unlock(&dbg_lock);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void dbg_dump_lstats(const struct ubifs_lp_stats *lst)
|
|
|
|
|
{
|
|
|
|
|
spin_lock(&dbg_lock);
|
2008-07-25 16:58:38 +07:00
|
|
|
|
printk(KERN_DEBUG "(pid %d) Lprops statistics: empty_lebs %d, "
|
|
|
|
|
"idx_lebs %d\n", current->pid, lst->empty_lebs, lst->idx_lebs);
|
2008-07-14 23:08:37 +07:00
|
|
|
|
printk(KERN_DEBUG "\ttaken_empty_lebs %d, total_free %lld, "
|
|
|
|
|
"total_dirty %lld\n", lst->taken_empty_lebs, lst->total_free,
|
|
|
|
|
lst->total_dirty);
|
|
|
|
|
printk(KERN_DEBUG "\ttotal_used %lld, total_dark %lld, "
|
|
|
|
|
"total_dead %lld\n", lst->total_used, lst->total_dark,
|
|
|
|
|
lst->total_dead);
|
|
|
|
|
spin_unlock(&dbg_lock);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void dbg_dump_budg(struct ubifs_info *c)
|
|
|
|
|
{
|
|
|
|
|
int i;
|
|
|
|
|
struct rb_node *rb;
|
|
|
|
|
struct ubifs_bud *bud;
|
|
|
|
|
struct ubifs_gced_idx_leb *idx_gc;
|
|
|
|
|
|
|
|
|
|
spin_lock(&dbg_lock);
|
2008-07-25 16:58:38 +07:00
|
|
|
|
printk(KERN_DEBUG "(pid %d) Budgeting info: budg_data_growth %lld, "
|
|
|
|
|
"budg_dd_growth %lld, budg_idx_growth %lld\n", current->pid,
|
2008-07-14 23:08:37 +07:00
|
|
|
|
c->budg_data_growth, c->budg_dd_growth, c->budg_idx_growth);
|
|
|
|
|
printk(KERN_DEBUG "\tdata budget sum %lld, total budget sum %lld, "
|
|
|
|
|
"freeable_cnt %d\n", c->budg_data_growth + c->budg_dd_growth,
|
|
|
|
|
c->budg_data_growth + c->budg_dd_growth + c->budg_idx_growth,
|
|
|
|
|
c->freeable_cnt);
|
|
|
|
|
printk(KERN_DEBUG "\tmin_idx_lebs %d, old_idx_sz %lld, "
|
|
|
|
|
"calc_idx_sz %lld, idx_gc_cnt %d\n", c->min_idx_lebs,
|
|
|
|
|
c->old_idx_sz, c->calc_idx_sz, c->idx_gc_cnt);
|
|
|
|
|
printk(KERN_DEBUG "\tdirty_pg_cnt %ld, dirty_zn_cnt %ld, "
|
|
|
|
|
"clean_zn_cnt %ld\n", atomic_long_read(&c->dirty_pg_cnt),
|
|
|
|
|
atomic_long_read(&c->dirty_zn_cnt),
|
|
|
|
|
atomic_long_read(&c->clean_zn_cnt));
|
|
|
|
|
printk(KERN_DEBUG "\tdark_wm %d, dead_wm %d, max_idx_node_sz %d\n",
|
|
|
|
|
c->dark_wm, c->dead_wm, c->max_idx_node_sz);
|
|
|
|
|
printk(KERN_DEBUG "\tgc_lnum %d, ihead_lnum %d\n",
|
|
|
|
|
c->gc_lnum, c->ihead_lnum);
|
|
|
|
|
for (i = 0; i < c->jhead_cnt; i++)
|
|
|
|
|
printk(KERN_DEBUG "\tjhead %d\t LEB %d\n",
|
|
|
|
|
c->jheads[i].wbuf.jhead, c->jheads[i].wbuf.lnum);
|
|
|
|
|
for (rb = rb_first(&c->buds); rb; rb = rb_next(rb)) {
|
|
|
|
|
bud = rb_entry(rb, struct ubifs_bud, rb);
|
|
|
|
|
printk(KERN_DEBUG "\tbud LEB %d\n", bud->lnum);
|
|
|
|
|
}
|
|
|
|
|
list_for_each_entry(bud, &c->old_buds, list)
|
|
|
|
|
printk(KERN_DEBUG "\told bud LEB %d\n", bud->lnum);
|
|
|
|
|
list_for_each_entry(idx_gc, &c->idx_gc, list)
|
|
|
|
|
printk(KERN_DEBUG "\tGC'ed idx LEB %d unmap %d\n",
|
|
|
|
|
idx_gc->lnum, idx_gc->unmap);
|
|
|
|
|
printk(KERN_DEBUG "\tcommit state %d\n", c->cmt_state);
|
|
|
|
|
spin_unlock(&dbg_lock);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void dbg_dump_lprop(const struct ubifs_info *c, const struct ubifs_lprops *lp)
|
|
|
|
|
{
|
|
|
|
|
printk(KERN_DEBUG "LEB %d lprops: free %d, dirty %d (used %d), "
|
|
|
|
|
"flags %#x\n", lp->lnum, lp->free, lp->dirty,
|
|
|
|
|
c->leb_size - lp->free - lp->dirty, lp->flags);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void dbg_dump_lprops(struct ubifs_info *c)
|
|
|
|
|
{
|
|
|
|
|
int lnum, err;
|
|
|
|
|
struct ubifs_lprops lp;
|
|
|
|
|
struct ubifs_lp_stats lst;
|
|
|
|
|
|
2008-07-25 16:58:38 +07:00
|
|
|
|
printk(KERN_DEBUG "(pid %d) Dumping LEB properties\n", current->pid);
|
2008-07-14 23:08:37 +07:00
|
|
|
|
ubifs_get_lp_stats(c, &lst);
|
|
|
|
|
dbg_dump_lstats(&lst);
|
|
|
|
|
|
|
|
|
|
for (lnum = c->main_first; lnum < c->leb_cnt; lnum++) {
|
|
|
|
|
err = ubifs_read_one_lp(c, lnum, &lp);
|
|
|
|
|
if (err)
|
|
|
|
|
ubifs_err("cannot read lprops for LEB %d", lnum);
|
|
|
|
|
|
|
|
|
|
dbg_dump_lprop(c, &lp);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void dbg_dump_leb(const struct ubifs_info *c, int lnum)
|
|
|
|
|
{
|
|
|
|
|
struct ubifs_scan_leb *sleb;
|
|
|
|
|
struct ubifs_scan_node *snod;
|
|
|
|
|
|
|
|
|
|
if (dbg_failure_mode)
|
|
|
|
|
return;
|
|
|
|
|
|
2008-07-25 16:58:38 +07:00
|
|
|
|
printk(KERN_DEBUG "(pid %d) Dumping LEB %d\n", current->pid, lnum);
|
2008-07-14 23:08:37 +07:00
|
|
|
|
|
|
|
|
|
sleb = ubifs_scan(c, lnum, 0, c->dbg_buf);
|
|
|
|
|
if (IS_ERR(sleb)) {
|
|
|
|
|
ubifs_err("scan error %d", (int)PTR_ERR(sleb));
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
printk(KERN_DEBUG "LEB %d has %d nodes ending at %d\n", lnum,
|
|
|
|
|
sleb->nodes_cnt, sleb->endpt);
|
|
|
|
|
|
|
|
|
|
list_for_each_entry(snod, &sleb->nodes, list) {
|
|
|
|
|
cond_resched();
|
|
|
|
|
printk(KERN_DEBUG "Dumping node at LEB %d:%d len %d\n", lnum,
|
|
|
|
|
snod->offs, snod->len);
|
|
|
|
|
dbg_dump_node(c, snod->node);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
ubifs_scan_destroy(sleb);
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void dbg_dump_znode(const struct ubifs_info *c,
|
|
|
|
|
const struct ubifs_znode *znode)
|
|
|
|
|
{
|
|
|
|
|
int n;
|
|
|
|
|
const struct ubifs_zbranch *zbr;
|
|
|
|
|
|
|
|
|
|
spin_lock(&dbg_lock);
|
|
|
|
|
if (znode->parent)
|
|
|
|
|
zbr = &znode->parent->zbranch[znode->iip];
|
|
|
|
|
else
|
|
|
|
|
zbr = &c->zroot;
|
|
|
|
|
|
|
|
|
|
printk(KERN_DEBUG "znode %p, LEB %d:%d len %d parent %p iip %d level %d"
|
|
|
|
|
" child_cnt %d flags %lx\n", znode, zbr->lnum, zbr->offs,
|
|
|
|
|
zbr->len, znode->parent, znode->iip, znode->level,
|
|
|
|
|
znode->child_cnt, znode->flags);
|
|
|
|
|
|
|
|
|
|
if (znode->child_cnt <= 0 || znode->child_cnt > c->fanout) {
|
|
|
|
|
spin_unlock(&dbg_lock);
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
printk(KERN_DEBUG "zbranches:\n");
|
|
|
|
|
for (n = 0; n < znode->child_cnt; n++) {
|
|
|
|
|
zbr = &znode->zbranch[n];
|
|
|
|
|
if (znode->level > 0)
|
|
|
|
|
printk(KERN_DEBUG "\t%d: znode %p LEB %d:%d len %d key "
|
|
|
|
|
"%s\n", n, zbr->znode, zbr->lnum,
|
|
|
|
|
zbr->offs, zbr->len,
|
|
|
|
|
DBGKEY(&zbr->key));
|
|
|
|
|
else
|
|
|
|
|
printk(KERN_DEBUG "\t%d: LNC %p LEB %d:%d len %d key "
|
|
|
|
|
"%s\n", n, zbr->znode, zbr->lnum,
|
|
|
|
|
zbr->offs, zbr->len,
|
|
|
|
|
DBGKEY(&zbr->key));
|
|
|
|
|
}
|
|
|
|
|
spin_unlock(&dbg_lock);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void dbg_dump_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat)
|
|
|
|
|
{
|
|
|
|
|
int i;
|
|
|
|
|
|
2008-07-25 16:58:38 +07:00
|
|
|
|
printk(KERN_DEBUG "(pid %d) Dumping heap cat %d (%d elements)\n",
|
|
|
|
|
current->pid, cat, heap->cnt);
|
2008-07-14 23:08:37 +07:00
|
|
|
|
for (i = 0; i < heap->cnt; i++) {
|
|
|
|
|
struct ubifs_lprops *lprops = heap->arr[i];
|
|
|
|
|
|
|
|
|
|
printk(KERN_DEBUG "\t%d. LEB %d hpos %d free %d dirty %d "
|
|
|
|
|
"flags %d\n", i, lprops->lnum, lprops->hpos,
|
|
|
|
|
lprops->free, lprops->dirty, lprops->flags);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void dbg_dump_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode,
|
|
|
|
|
struct ubifs_nnode *parent, int iip)
|
|
|
|
|
{
|
|
|
|
|
int i;
|
|
|
|
|
|
2008-07-25 16:58:38 +07:00
|
|
|
|
printk(KERN_DEBUG "(pid %d) Dumping pnode:\n", current->pid);
|
2008-07-14 23:08:37 +07:00
|
|
|
|
printk(KERN_DEBUG "\taddress %zx parent %zx cnext %zx\n",
|
|
|
|
|
(size_t)pnode, (size_t)parent, (size_t)pnode->cnext);
|
|
|
|
|
printk(KERN_DEBUG "\tflags %lu iip %d level %d num %d\n",
|
|
|
|
|
pnode->flags, iip, pnode->level, pnode->num);
|
|
|
|
|
for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
|
|
|
|
|
struct ubifs_lprops *lp = &pnode->lprops[i];
|
|
|
|
|
|
|
|
|
|
printk(KERN_DEBUG "\t%d: free %d dirty %d flags %d lnum %d\n",
|
|
|
|
|
i, lp->free, lp->dirty, lp->flags, lp->lnum);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void dbg_dump_tnc(struct ubifs_info *c)
|
|
|
|
|
{
|
|
|
|
|
struct ubifs_znode *znode;
|
|
|
|
|
int level;
|
|
|
|
|
|
|
|
|
|
printk(KERN_DEBUG "\n");
|
2008-07-25 16:58:38 +07:00
|
|
|
|
printk(KERN_DEBUG "(pid %d) Dumping the TNC tree\n", current->pid);
|
2008-07-14 23:08:37 +07:00
|
|
|
|
znode = ubifs_tnc_levelorder_next(c->zroot.znode, NULL);
|
|
|
|
|
level = znode->level;
|
|
|
|
|
printk(KERN_DEBUG "== Level %d ==\n", level);
|
|
|
|
|
while (znode) {
|
|
|
|
|
if (level != znode->level) {
|
|
|
|
|
level = znode->level;
|
|
|
|
|
printk(KERN_DEBUG "== Level %d ==\n", level);
|
|
|
|
|
}
|
|
|
|
|
dbg_dump_znode(c, znode);
|
|
|
|
|
znode = ubifs_tnc_levelorder_next(c->zroot.znode, znode);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
printk(KERN_DEBUG "\n");
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int dump_znode(struct ubifs_info *c, struct ubifs_znode *znode,
|
|
|
|
|
void *priv)
|
|
|
|
|
{
|
|
|
|
|
dbg_dump_znode(c, znode);
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* dbg_dump_index - dump the on-flash index.
|
|
|
|
|
* @c: UBIFS file-system description object
|
|
|
|
|
*
|
|
|
|
|
* This function dumps whole UBIFS indexing B-tree, unlike 'dbg_dump_tnc()'
|
|
|
|
|
* which dumps only in-memory znodes and does not read znodes which from flash.
|
|
|
|
|
*/
|
|
|
|
|
void dbg_dump_index(struct ubifs_info *c)
|
|
|
|
|
{
|
|
|
|
|
dbg_walk_index(c, NULL, dump_znode, NULL);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* dbg_check_synced_i_size - check synchronized inode size.
|
|
|
|
|
* @inode: inode to check
|
|
|
|
|
*
|
|
|
|
|
* If inode is clean, synchronized inode size has to be equivalent to current
|
|
|
|
|
* inode size. This function has to be called only for locked inodes (@i_mutex
|
|
|
|
|
* has to be locked). Returns %0 if synchronized inode size if correct, and
|
|
|
|
|
* %-EINVAL if not.
|
|
|
|
|
*/
|
|
|
|
|
int dbg_check_synced_i_size(struct inode *inode)
|
|
|
|
|
{
|
|
|
|
|
int err = 0;
|
|
|
|
|
struct ubifs_inode *ui = ubifs_inode(inode);
|
|
|
|
|
|
|
|
|
|
if (!(ubifs_chk_flags & UBIFS_CHK_GEN))
|
|
|
|
|
return 0;
|
|
|
|
|
if (!S_ISREG(inode->i_mode))
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
mutex_lock(&ui->ui_mutex);
|
|
|
|
|
spin_lock(&ui->ui_lock);
|
|
|
|
|
if (ui->ui_size != ui->synced_i_size && !ui->dirty) {
|
|
|
|
|
ubifs_err("ui_size is %lld, synced_i_size is %lld, but inode "
|
|
|
|
|
"is clean", ui->ui_size, ui->synced_i_size);
|
|
|
|
|
ubifs_err("i_ino %lu, i_mode %#x, i_size %lld", inode->i_ino,
|
|
|
|
|
inode->i_mode, i_size_read(inode));
|
|
|
|
|
dbg_dump_stack();
|
|
|
|
|
err = -EINVAL;
|
|
|
|
|
}
|
|
|
|
|
spin_unlock(&ui->ui_lock);
|
|
|
|
|
mutex_unlock(&ui->ui_mutex);
|
|
|
|
|
return err;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* dbg_check_dir - check directory inode size and link count.
|
|
|
|
|
* @c: UBIFS file-system description object
|
|
|
|
|
* @dir: the directory to calculate size for
|
|
|
|
|
* @size: the result is returned here
|
|
|
|
|
*
|
|
|
|
|
* This function makes sure that directory size and link count are correct.
|
|
|
|
|
* Returns zero in case of success and a negative error code in case of
|
|
|
|
|
* failure.
|
|
|
|
|
*
|
|
|
|
|
* Note, it is good idea to make sure the @dir->i_mutex is locked before
|
|
|
|
|
* calling this function.
|
|
|
|
|
*/
|
|
|
|
|
int dbg_check_dir_size(struct ubifs_info *c, const struct inode *dir)
|
|
|
|
|
{
|
|
|
|
|
unsigned int nlink = 2;
|
|
|
|
|
union ubifs_key key;
|
|
|
|
|
struct ubifs_dent_node *dent, *pdent = NULL;
|
|
|
|
|
struct qstr nm = { .name = NULL };
|
|
|
|
|
loff_t size = UBIFS_INO_NODE_SZ;
|
|
|
|
|
|
|
|
|
|
if (!(ubifs_chk_flags & UBIFS_CHK_GEN))
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
if (!S_ISDIR(dir->i_mode))
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
lowest_dent_key(c, &key, dir->i_ino);
|
|
|
|
|
while (1) {
|
|
|
|
|
int err;
|
|
|
|
|
|
|
|
|
|
dent = ubifs_tnc_next_ent(c, &key, &nm);
|
|
|
|
|
if (IS_ERR(dent)) {
|
|
|
|
|
err = PTR_ERR(dent);
|
|
|
|
|
if (err == -ENOENT)
|
|
|
|
|
break;
|
|
|
|
|
return err;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
nm.name = dent->name;
|
|
|
|
|
nm.len = le16_to_cpu(dent->nlen);
|
|
|
|
|
size += CALC_DENT_SIZE(nm.len);
|
|
|
|
|
if (dent->type == UBIFS_ITYPE_DIR)
|
|
|
|
|
nlink += 1;
|
|
|
|
|
kfree(pdent);
|
|
|
|
|
pdent = dent;
|
|
|
|
|
key_read(c, &dent->key, &key);
|
|
|
|
|
}
|
|
|
|
|
kfree(pdent);
|
|
|
|
|
|
|
|
|
|
if (i_size_read(dir) != size) {
|
|
|
|
|
ubifs_err("directory inode %lu has size %llu, "
|
|
|
|
|
"but calculated size is %llu", dir->i_ino,
|
|
|
|
|
(unsigned long long)i_size_read(dir),
|
|
|
|
|
(unsigned long long)size);
|
|
|
|
|
dump_stack();
|
|
|
|
|
return -EINVAL;
|
|
|
|
|
}
|
|
|
|
|
if (dir->i_nlink != nlink) {
|
|
|
|
|
ubifs_err("directory inode %lu has nlink %u, but calculated "
|
|
|
|
|
"nlink is %u", dir->i_ino, dir->i_nlink, nlink);
|
|
|
|
|
dump_stack();
|
|
|
|
|
return -EINVAL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* dbg_check_key_order - make sure that colliding keys are properly ordered.
|
|
|
|
|
* @c: UBIFS file-system description object
|
|
|
|
|
* @zbr1: first zbranch
|
|
|
|
|
* @zbr2: following zbranch
|
|
|
|
|
*
|
|
|
|
|
* In UBIFS indexing B-tree colliding keys has to be sorted in binary order of
|
|
|
|
|
* names of the direntries/xentries which are referred by the keys. This
|
|
|
|
|
* function reads direntries/xentries referred by @zbr1 and @zbr2 and makes
|
|
|
|
|
* sure the name of direntry/xentry referred by @zbr1 is less than
|
|
|
|
|
* direntry/xentry referred by @zbr2. Returns zero if this is true, %1 if not,
|
|
|
|
|
* and a negative error code in case of failure.
|
|
|
|
|
*/
|
|
|
|
|
static int dbg_check_key_order(struct ubifs_info *c, struct ubifs_zbranch *zbr1,
|
|
|
|
|
struct ubifs_zbranch *zbr2)
|
|
|
|
|
{
|
|
|
|
|
int err, nlen1, nlen2, cmp;
|
|
|
|
|
struct ubifs_dent_node *dent1, *dent2;
|
|
|
|
|
union ubifs_key key;
|
|
|
|
|
|
|
|
|
|
ubifs_assert(!keys_cmp(c, &zbr1->key, &zbr2->key));
|
|
|
|
|
dent1 = kmalloc(UBIFS_MAX_DENT_NODE_SZ, GFP_NOFS);
|
|
|
|
|
if (!dent1)
|
|
|
|
|
return -ENOMEM;
|
|
|
|
|
dent2 = kmalloc(UBIFS_MAX_DENT_NODE_SZ, GFP_NOFS);
|
|
|
|
|
if (!dent2) {
|
|
|
|
|
err = -ENOMEM;
|
|
|
|
|
goto out_free;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
err = ubifs_tnc_read_node(c, zbr1, dent1);
|
|
|
|
|
if (err)
|
|
|
|
|
goto out_free;
|
|
|
|
|
err = ubifs_validate_entry(c, dent1);
|
|
|
|
|
if (err)
|
|
|
|
|
goto out_free;
|
|
|
|
|
|
|
|
|
|
err = ubifs_tnc_read_node(c, zbr2, dent2);
|
|
|
|
|
if (err)
|
|
|
|
|
goto out_free;
|
|
|
|
|
err = ubifs_validate_entry(c, dent2);
|
|
|
|
|
if (err)
|
|
|
|
|
goto out_free;
|
|
|
|
|
|
|
|
|
|
/* Make sure node keys are the same as in zbranch */
|
|
|
|
|
err = 1;
|
|
|
|
|
key_read(c, &dent1->key, &key);
|
|
|
|
|
if (keys_cmp(c, &zbr1->key, &key)) {
|
|
|
|
|
dbg_err("1st entry at %d:%d has key %s", zbr1->lnum,
|
|
|
|
|
zbr1->offs, DBGKEY(&key));
|
|
|
|
|
dbg_err("but it should have key %s according to tnc",
|
|
|
|
|
DBGKEY(&zbr1->key));
|
|
|
|
|
dbg_dump_node(c, dent1);
|
|
|
|
|
goto out_free;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
key_read(c, &dent2->key, &key);
|
|
|
|
|
if (keys_cmp(c, &zbr2->key, &key)) {
|
|
|
|
|
dbg_err("2nd entry at %d:%d has key %s", zbr1->lnum,
|
|
|
|
|
zbr1->offs, DBGKEY(&key));
|
|
|
|
|
dbg_err("but it should have key %s according to tnc",
|
|
|
|
|
DBGKEY(&zbr2->key));
|
|
|
|
|
dbg_dump_node(c, dent2);
|
|
|
|
|
goto out_free;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
nlen1 = le16_to_cpu(dent1->nlen);
|
|
|
|
|
nlen2 = le16_to_cpu(dent2->nlen);
|
|
|
|
|
|
|
|
|
|
cmp = memcmp(dent1->name, dent2->name, min_t(int, nlen1, nlen2));
|
|
|
|
|
if (cmp < 0 || (cmp == 0 && nlen1 < nlen2)) {
|
|
|
|
|
err = 0;
|
|
|
|
|
goto out_free;
|
|
|
|
|
}
|
|
|
|
|
if (cmp == 0 && nlen1 == nlen2)
|
|
|
|
|
dbg_err("2 xent/dent nodes with the same name");
|
|
|
|
|
else
|
|
|
|
|
dbg_err("bad order of colliding key %s",
|
|
|
|
|
DBGKEY(&key));
|
|
|
|
|
|
|
|
|
|
dbg_msg("first node at %d:%d\n", zbr1->lnum, zbr1->offs);
|
|
|
|
|
dbg_dump_node(c, dent1);
|
|
|
|
|
dbg_msg("second node at %d:%d\n", zbr2->lnum, zbr2->offs);
|
|
|
|
|
dbg_dump_node(c, dent2);
|
|
|
|
|
|
|
|
|
|
out_free:
|
|
|
|
|
kfree(dent2);
|
|
|
|
|
kfree(dent1);
|
|
|
|
|
return err;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* dbg_check_znode - check if znode is all right.
|
|
|
|
|
* @c: UBIFS file-system description object
|
|
|
|
|
* @zbr: zbranch which points to this znode
|
|
|
|
|
*
|
|
|
|
|
* This function makes sure that znode referred to by @zbr is all right.
|
|
|
|
|
* Returns zero if it is, and %-EINVAL if it is not.
|
|
|
|
|
*/
|
|
|
|
|
static int dbg_check_znode(struct ubifs_info *c, struct ubifs_zbranch *zbr)
|
|
|
|
|
{
|
|
|
|
|
struct ubifs_znode *znode = zbr->znode;
|
|
|
|
|
struct ubifs_znode *zp = znode->parent;
|
|
|
|
|
int n, err, cmp;
|
|
|
|
|
|
|
|
|
|
if (znode->child_cnt <= 0 || znode->child_cnt > c->fanout) {
|
|
|
|
|
err = 1;
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
if (znode->level < 0) {
|
|
|
|
|
err = 2;
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
if (znode->iip < 0 || znode->iip >= c->fanout) {
|
|
|
|
|
err = 3;
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (zbr->len == 0)
|
|
|
|
|
/* Only dirty zbranch may have no on-flash nodes */
|
|
|
|
|
if (!ubifs_zn_dirty(znode)) {
|
|
|
|
|
err = 4;
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (ubifs_zn_dirty(znode)) {
|
|
|
|
|
/*
|
|
|
|
|
* If znode is dirty, its parent has to be dirty as well. The
|
|
|
|
|
* order of the operation is important, so we have to have
|
|
|
|
|
* memory barriers.
|
|
|
|
|
*/
|
|
|
|
|
smp_mb();
|
|
|
|
|
if (zp && !ubifs_zn_dirty(zp)) {
|
|
|
|
|
/*
|
|
|
|
|
* The dirty flag is atomic and is cleared outside the
|
|
|
|
|
* TNC mutex, so znode's dirty flag may now have
|
|
|
|
|
* been cleared. The child is always cleared before the
|
|
|
|
|
* parent, so we just need to check again.
|
|
|
|
|
*/
|
|
|
|
|
smp_mb();
|
|
|
|
|
if (ubifs_zn_dirty(znode)) {
|
|
|
|
|
err = 5;
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (zp) {
|
|
|
|
|
const union ubifs_key *min, *max;
|
|
|
|
|
|
|
|
|
|
if (znode->level != zp->level - 1) {
|
|
|
|
|
err = 6;
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Make sure the 'parent' pointer in our znode is correct */
|
|
|
|
|
err = ubifs_search_zbranch(c, zp, &zbr->key, &n);
|
|
|
|
|
if (!err) {
|
|
|
|
|
/* This zbranch does not exist in the parent */
|
|
|
|
|
err = 7;
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (znode->iip >= zp->child_cnt) {
|
|
|
|
|
err = 8;
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (znode->iip != n) {
|
|
|
|
|
/* This may happen only in case of collisions */
|
|
|
|
|
if (keys_cmp(c, &zp->zbranch[n].key,
|
|
|
|
|
&zp->zbranch[znode->iip].key)) {
|
|
|
|
|
err = 9;
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
n = znode->iip;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Make sure that the first key in our znode is greater than or
|
|
|
|
|
* equal to the key in the pointing zbranch.
|
|
|
|
|
*/
|
|
|
|
|
min = &zbr->key;
|
|
|
|
|
cmp = keys_cmp(c, min, &znode->zbranch[0].key);
|
|
|
|
|
if (cmp == 1) {
|
|
|
|
|
err = 10;
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (n + 1 < zp->child_cnt) {
|
|
|
|
|
max = &zp->zbranch[n + 1].key;
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Make sure the last key in our znode is less or
|
|
|
|
|
* equivalent than the the key in zbranch which goes
|
|
|
|
|
* after our pointing zbranch.
|
|
|
|
|
*/
|
|
|
|
|
cmp = keys_cmp(c, max,
|
|
|
|
|
&znode->zbranch[znode->child_cnt - 1].key);
|
|
|
|
|
if (cmp == -1) {
|
|
|
|
|
err = 11;
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
} else {
|
|
|
|
|
/* This may only be root znode */
|
|
|
|
|
if (zbr != &c->zroot) {
|
|
|
|
|
err = 12;
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Make sure that next key is greater or equivalent then the previous
|
|
|
|
|
* one.
|
|
|
|
|
*/
|
|
|
|
|
for (n = 1; n < znode->child_cnt; n++) {
|
|
|
|
|
cmp = keys_cmp(c, &znode->zbranch[n - 1].key,
|
|
|
|
|
&znode->zbranch[n].key);
|
|
|
|
|
if (cmp > 0) {
|
|
|
|
|
err = 13;
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
if (cmp == 0) {
|
|
|
|
|
/* This can only be keys with colliding hash */
|
|
|
|
|
if (!is_hash_key(c, &znode->zbranch[n].key)) {
|
|
|
|
|
err = 14;
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (znode->level != 0 || c->replaying)
|
|
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Colliding keys should follow binary order of
|
|
|
|
|
* corresponding xentry/dentry names.
|
|
|
|
|
*/
|
|
|
|
|
err = dbg_check_key_order(c, &znode->zbranch[n - 1],
|
|
|
|
|
&znode->zbranch[n]);
|
|
|
|
|
if (err < 0)
|
|
|
|
|
return err;
|
|
|
|
|
if (err) {
|
|
|
|
|
err = 15;
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
for (n = 0; n < znode->child_cnt; n++) {
|
|
|
|
|
if (!znode->zbranch[n].znode &&
|
|
|
|
|
(znode->zbranch[n].lnum == 0 ||
|
|
|
|
|
znode->zbranch[n].len == 0)) {
|
|
|
|
|
err = 16;
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (znode->zbranch[n].lnum != 0 &&
|
|
|
|
|
znode->zbranch[n].len == 0) {
|
|
|
|
|
err = 17;
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (znode->zbranch[n].lnum == 0 &&
|
|
|
|
|
znode->zbranch[n].len != 0) {
|
|
|
|
|
err = 18;
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (znode->zbranch[n].lnum == 0 &&
|
|
|
|
|
znode->zbranch[n].offs != 0) {
|
|
|
|
|
err = 19;
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (znode->level != 0 && znode->zbranch[n].znode)
|
|
|
|
|
if (znode->zbranch[n].znode->parent != znode) {
|
|
|
|
|
err = 20;
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
out:
|
|
|
|
|
ubifs_err("failed, error %d", err);
|
|
|
|
|
ubifs_msg("dump of the znode");
|
|
|
|
|
dbg_dump_znode(c, znode);
|
|
|
|
|
if (zp) {
|
|
|
|
|
ubifs_msg("dump of the parent znode");
|
|
|
|
|
dbg_dump_znode(c, zp);
|
|
|
|
|
}
|
|
|
|
|
dump_stack();
|
|
|
|
|
return -EINVAL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* dbg_check_tnc - check TNC tree.
|
|
|
|
|
* @c: UBIFS file-system description object
|
|
|
|
|
* @extra: do extra checks that are possible at start commit
|
|
|
|
|
*
|
|
|
|
|
* This function traverses whole TNC tree and checks every znode. Returns zero
|
|
|
|
|
* if everything is all right and %-EINVAL if something is wrong with TNC.
|
|
|
|
|
*/
|
|
|
|
|
int dbg_check_tnc(struct ubifs_info *c, int extra)
|
|
|
|
|
{
|
|
|
|
|
struct ubifs_znode *znode;
|
|
|
|
|
long clean_cnt = 0, dirty_cnt = 0;
|
|
|
|
|
int err, last;
|
|
|
|
|
|
|
|
|
|
if (!(ubifs_chk_flags & UBIFS_CHK_TNC))
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
ubifs_assert(mutex_is_locked(&c->tnc_mutex));
|
|
|
|
|
if (!c->zroot.znode)
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
znode = ubifs_tnc_postorder_first(c->zroot.znode);
|
|
|
|
|
while (1) {
|
|
|
|
|
struct ubifs_znode *prev;
|
|
|
|
|
struct ubifs_zbranch *zbr;
|
|
|
|
|
|
|
|
|
|
if (!znode->parent)
|
|
|
|
|
zbr = &c->zroot;
|
|
|
|
|
else
|
|
|
|
|
zbr = &znode->parent->zbranch[znode->iip];
|
|
|
|
|
|
|
|
|
|
err = dbg_check_znode(c, zbr);
|
|
|
|
|
if (err)
|
|
|
|
|
return err;
|
|
|
|
|
|
|
|
|
|
if (extra) {
|
|
|
|
|
if (ubifs_zn_dirty(znode))
|
|
|
|
|
dirty_cnt += 1;
|
|
|
|
|
else
|
|
|
|
|
clean_cnt += 1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
prev = znode;
|
|
|
|
|
znode = ubifs_tnc_postorder_next(znode);
|
|
|
|
|
if (!znode)
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* If the last key of this znode is equivalent to the first key
|
|
|
|
|
* of the next znode (collision), then check order of the keys.
|
|
|
|
|
*/
|
|
|
|
|
last = prev->child_cnt - 1;
|
|
|
|
|
if (prev->level == 0 && znode->level == 0 && !c->replaying &&
|
|
|
|
|
!keys_cmp(c, &prev->zbranch[last].key,
|
|
|
|
|
&znode->zbranch[0].key)) {
|
|
|
|
|
err = dbg_check_key_order(c, &prev->zbranch[last],
|
|
|
|
|
&znode->zbranch[0]);
|
|
|
|
|
if (err < 0)
|
|
|
|
|
return err;
|
|
|
|
|
if (err) {
|
|
|
|
|
ubifs_msg("first znode");
|
|
|
|
|
dbg_dump_znode(c, prev);
|
|
|
|
|
ubifs_msg("second znode");
|
|
|
|
|
dbg_dump_znode(c, znode);
|
|
|
|
|
return -EINVAL;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (extra) {
|
|
|
|
|
if (clean_cnt != atomic_long_read(&c->clean_zn_cnt)) {
|
|
|
|
|
ubifs_err("incorrect clean_zn_cnt %ld, calculated %ld",
|
|
|
|
|
atomic_long_read(&c->clean_zn_cnt),
|
|
|
|
|
clean_cnt);
|
|
|
|
|
return -EINVAL;
|
|
|
|
|
}
|
|
|
|
|
if (dirty_cnt != atomic_long_read(&c->dirty_zn_cnt)) {
|
|
|
|
|
ubifs_err("incorrect dirty_zn_cnt %ld, calculated %ld",
|
|
|
|
|
atomic_long_read(&c->dirty_zn_cnt),
|
|
|
|
|
dirty_cnt);
|
|
|
|
|
return -EINVAL;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* dbg_walk_index - walk the on-flash index.
|
|
|
|
|
* @c: UBIFS file-system description object
|
|
|
|
|
* @leaf_cb: called for each leaf node
|
|
|
|
|
* @znode_cb: called for each indexing node
|
|
|
|
|
* @priv: private date which is passed to callbacks
|
|
|
|
|
*
|
|
|
|
|
* This function walks the UBIFS index and calls the @leaf_cb for each leaf
|
|
|
|
|
* node and @znode_cb for each indexing node. Returns zero in case of success
|
|
|
|
|
* and a negative error code in case of failure.
|
|
|
|
|
*
|
|
|
|
|
* It would be better if this function removed every znode it pulled to into
|
|
|
|
|
* the TNC, so that the behavior more closely matched the non-debugging
|
|
|
|
|
* behavior.
|
|
|
|
|
*/
|
|
|
|
|
int dbg_walk_index(struct ubifs_info *c, dbg_leaf_callback leaf_cb,
|
|
|
|
|
dbg_znode_callback znode_cb, void *priv)
|
|
|
|
|
{
|
|
|
|
|
int err;
|
|
|
|
|
struct ubifs_zbranch *zbr;
|
|
|
|
|
struct ubifs_znode *znode, *child;
|
|
|
|
|
|
|
|
|
|
mutex_lock(&c->tnc_mutex);
|
|
|
|
|
/* If the root indexing node is not in TNC - pull it */
|
|
|
|
|
if (!c->zroot.znode) {
|
|
|
|
|
c->zroot.znode = ubifs_load_znode(c, &c->zroot, NULL, 0);
|
|
|
|
|
if (IS_ERR(c->zroot.znode)) {
|
|
|
|
|
err = PTR_ERR(c->zroot.znode);
|
|
|
|
|
c->zroot.znode = NULL;
|
|
|
|
|
goto out_unlock;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* We are going to traverse the indexing tree in the postorder manner.
|
|
|
|
|
* Go down and find the leftmost indexing node where we are going to
|
|
|
|
|
* start from.
|
|
|
|
|
*/
|
|
|
|
|
znode = c->zroot.znode;
|
|
|
|
|
while (znode->level > 0) {
|
|
|
|
|
zbr = &znode->zbranch[0];
|
|
|
|
|
child = zbr->znode;
|
|
|
|
|
if (!child) {
|
|
|
|
|
child = ubifs_load_znode(c, zbr, znode, 0);
|
|
|
|
|
if (IS_ERR(child)) {
|
|
|
|
|
err = PTR_ERR(child);
|
|
|
|
|
goto out_unlock;
|
|
|
|
|
}
|
|
|
|
|
zbr->znode = child;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
znode = child;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Iterate over all indexing nodes */
|
|
|
|
|
while (1) {
|
|
|
|
|
int idx;
|
|
|
|
|
|
|
|
|
|
cond_resched();
|
|
|
|
|
|
|
|
|
|
if (znode_cb) {
|
|
|
|
|
err = znode_cb(c, znode, priv);
|
|
|
|
|
if (err) {
|
|
|
|
|
ubifs_err("znode checking function returned "
|
|
|
|
|
"error %d", err);
|
|
|
|
|
dbg_dump_znode(c, znode);
|
|
|
|
|
goto out_dump;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
if (leaf_cb && znode->level == 0) {
|
|
|
|
|
for (idx = 0; idx < znode->child_cnt; idx++) {
|
|
|
|
|
zbr = &znode->zbranch[idx];
|
|
|
|
|
err = leaf_cb(c, zbr, priv);
|
|
|
|
|
if (err) {
|
|
|
|
|
ubifs_err("leaf checking function "
|
|
|
|
|
"returned error %d, for leaf "
|
|
|
|
|
"at LEB %d:%d",
|
|
|
|
|
err, zbr->lnum, zbr->offs);
|
|
|
|
|
goto out_dump;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (!znode->parent)
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
idx = znode->iip + 1;
|
|
|
|
|
znode = znode->parent;
|
|
|
|
|
if (idx < znode->child_cnt) {
|
|
|
|
|
/* Switch to the next index in the parent */
|
|
|
|
|
zbr = &znode->zbranch[idx];
|
|
|
|
|
child = zbr->znode;
|
|
|
|
|
if (!child) {
|
|
|
|
|
child = ubifs_load_znode(c, zbr, znode, idx);
|
|
|
|
|
if (IS_ERR(child)) {
|
|
|
|
|
err = PTR_ERR(child);
|
|
|
|
|
goto out_unlock;
|
|
|
|
|
}
|
|
|
|
|
zbr->znode = child;
|
|
|
|
|
}
|
|
|
|
|
znode = child;
|
|
|
|
|
} else
|
|
|
|
|
/*
|
|
|
|
|
* This is the last child, switch to the parent and
|
|
|
|
|
* continue.
|
|
|
|
|
*/
|
|
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
/* Go to the lowest leftmost znode in the new sub-tree */
|
|
|
|
|
while (znode->level > 0) {
|
|
|
|
|
zbr = &znode->zbranch[0];
|
|
|
|
|
child = zbr->znode;
|
|
|
|
|
if (!child) {
|
|
|
|
|
child = ubifs_load_znode(c, zbr, znode, 0);
|
|
|
|
|
if (IS_ERR(child)) {
|
|
|
|
|
err = PTR_ERR(child);
|
|
|
|
|
goto out_unlock;
|
|
|
|
|
}
|
|
|
|
|
zbr->znode = child;
|
|
|
|
|
}
|
|
|
|
|
znode = child;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
mutex_unlock(&c->tnc_mutex);
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
out_dump:
|
|
|
|
|
if (znode->parent)
|
|
|
|
|
zbr = &znode->parent->zbranch[znode->iip];
|
|
|
|
|
else
|
|
|
|
|
zbr = &c->zroot;
|
|
|
|
|
ubifs_msg("dump of znode at LEB %d:%d", zbr->lnum, zbr->offs);
|
|
|
|
|
dbg_dump_znode(c, znode);
|
|
|
|
|
out_unlock:
|
|
|
|
|
mutex_unlock(&c->tnc_mutex);
|
|
|
|
|
return err;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* add_size - add znode size to partially calculated index size.
|
|
|
|
|
* @c: UBIFS file-system description object
|
|
|
|
|
* @znode: znode to add size for
|
|
|
|
|
* @priv: partially calculated index size
|
|
|
|
|
*
|
|
|
|
|
* This is a helper function for 'dbg_check_idx_size()' which is called for
|
|
|
|
|
* every indexing node and adds its size to the 'long long' variable pointed to
|
|
|
|
|
* by @priv.
|
|
|
|
|
*/
|
|
|
|
|
static int add_size(struct ubifs_info *c, struct ubifs_znode *znode, void *priv)
|
|
|
|
|
{
|
|
|
|
|
long long *idx_size = priv;
|
|
|
|
|
int add;
|
|
|
|
|
|
|
|
|
|
add = ubifs_idx_node_sz(c, znode->child_cnt);
|
|
|
|
|
add = ALIGN(add, 8);
|
|
|
|
|
*idx_size += add;
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* dbg_check_idx_size - check index size.
|
|
|
|
|
* @c: UBIFS file-system description object
|
|
|
|
|
* @idx_size: size to check
|
|
|
|
|
*
|
|
|
|
|
* This function walks the UBIFS index, calculates its size and checks that the
|
|
|
|
|
* size is equivalent to @idx_size. Returns zero in case of success and a
|
|
|
|
|
* negative error code in case of failure.
|
|
|
|
|
*/
|
|
|
|
|
int dbg_check_idx_size(struct ubifs_info *c, long long idx_size)
|
|
|
|
|
{
|
|
|
|
|
int err;
|
|
|
|
|
long long calc = 0;
|
|
|
|
|
|
|
|
|
|
if (!(ubifs_chk_flags & UBIFS_CHK_IDX_SZ))
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
err = dbg_walk_index(c, NULL, add_size, &calc);
|
|
|
|
|
if (err) {
|
|
|
|
|
ubifs_err("error %d while walking the index", err);
|
|
|
|
|
return err;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (calc != idx_size) {
|
|
|
|
|
ubifs_err("index size check failed: calculated size is %lld, "
|
|
|
|
|
"should be %lld", calc, idx_size);
|
|
|
|
|
dump_stack();
|
|
|
|
|
return -EINVAL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct fsck_inode - information about an inode used when checking the file-system.
|
|
|
|
|
* @rb: link in the RB-tree of inodes
|
|
|
|
|
* @inum: inode number
|
|
|
|
|
* @mode: inode type, permissions, etc
|
|
|
|
|
* @nlink: inode link count
|
|
|
|
|
* @xattr_cnt: count of extended attributes
|
|
|
|
|
* @references: how many directory/xattr entries refer this inode (calculated
|
|
|
|
|
* while walking the index)
|
|
|
|
|
* @calc_cnt: for directory inode count of child directories
|
|
|
|
|
* @size: inode size (read from on-flash inode)
|
|
|
|
|
* @xattr_sz: summary size of all extended attributes (read from on-flash
|
|
|
|
|
* inode)
|
|
|
|
|
* @calc_sz: for directories calculated directory size
|
|
|
|
|
* @calc_xcnt: count of extended attributes
|
|
|
|
|
* @calc_xsz: calculated summary size of all extended attributes
|
|
|
|
|
* @xattr_nms: sum of lengths of all extended attribute names belonging to this
|
|
|
|
|
* inode (read from on-flash inode)
|
|
|
|
|
* @calc_xnms: calculated sum of lengths of all extended attribute names
|
|
|
|
|
*/
|
|
|
|
|
struct fsck_inode {
|
|
|
|
|
struct rb_node rb;
|
|
|
|
|
ino_t inum;
|
|
|
|
|
umode_t mode;
|
|
|
|
|
unsigned int nlink;
|
|
|
|
|
unsigned int xattr_cnt;
|
|
|
|
|
int references;
|
|
|
|
|
int calc_cnt;
|
|
|
|
|
long long size;
|
|
|
|
|
unsigned int xattr_sz;
|
|
|
|
|
long long calc_sz;
|
|
|
|
|
long long calc_xcnt;
|
|
|
|
|
long long calc_xsz;
|
|
|
|
|
unsigned int xattr_nms;
|
|
|
|
|
long long calc_xnms;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct fsck_data - private FS checking information.
|
|
|
|
|
* @inodes: RB-tree of all inodes (contains @struct fsck_inode objects)
|
|
|
|
|
*/
|
|
|
|
|
struct fsck_data {
|
|
|
|
|
struct rb_root inodes;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* add_inode - add inode information to RB-tree of inodes.
|
|
|
|
|
* @c: UBIFS file-system description object
|
|
|
|
|
* @fsckd: FS checking information
|
|
|
|
|
* @ino: raw UBIFS inode to add
|
|
|
|
|
*
|
|
|
|
|
* This is a helper function for 'check_leaf()' which adds information about
|
|
|
|
|
* inode @ino to the RB-tree of inodes. Returns inode information pointer in
|
|
|
|
|
* case of success and a negative error code in case of failure.
|
|
|
|
|
*/
|
|
|
|
|
static struct fsck_inode *add_inode(struct ubifs_info *c,
|
|
|
|
|
struct fsck_data *fsckd,
|
|
|
|
|
struct ubifs_ino_node *ino)
|
|
|
|
|
{
|
|
|
|
|
struct rb_node **p, *parent = NULL;
|
|
|
|
|
struct fsck_inode *fscki;
|
|
|
|
|
ino_t inum = key_inum_flash(c, &ino->key);
|
|
|
|
|
|
|
|
|
|
p = &fsckd->inodes.rb_node;
|
|
|
|
|
while (*p) {
|
|
|
|
|
parent = *p;
|
|
|
|
|
fscki = rb_entry(parent, struct fsck_inode, rb);
|
|
|
|
|
if (inum < fscki->inum)
|
|
|
|
|
p = &(*p)->rb_left;
|
|
|
|
|
else if (inum > fscki->inum)
|
|
|
|
|
p = &(*p)->rb_right;
|
|
|
|
|
else
|
|
|
|
|
return fscki;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (inum > c->highest_inum) {
|
|
|
|
|
ubifs_err("too high inode number, max. is %lu",
|
|
|
|
|
c->highest_inum);
|
|
|
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
fscki = kzalloc(sizeof(struct fsck_inode), GFP_NOFS);
|
|
|
|
|
if (!fscki)
|
|
|
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
|
|
|
|
|
|
fscki->inum = inum;
|
|
|
|
|
fscki->nlink = le32_to_cpu(ino->nlink);
|
|
|
|
|
fscki->size = le64_to_cpu(ino->size);
|
|
|
|
|
fscki->xattr_cnt = le32_to_cpu(ino->xattr_cnt);
|
|
|
|
|
fscki->xattr_sz = le32_to_cpu(ino->xattr_size);
|
|
|
|
|
fscki->xattr_nms = le32_to_cpu(ino->xattr_names);
|
|
|
|
|
fscki->mode = le32_to_cpu(ino->mode);
|
|
|
|
|
if (S_ISDIR(fscki->mode)) {
|
|
|
|
|
fscki->calc_sz = UBIFS_INO_NODE_SZ;
|
|
|
|
|
fscki->calc_cnt = 2;
|
|
|
|
|
}
|
|
|
|
|
rb_link_node(&fscki->rb, parent, p);
|
|
|
|
|
rb_insert_color(&fscki->rb, &fsckd->inodes);
|
|
|
|
|
return fscki;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* search_inode - search inode in the RB-tree of inodes.
|
|
|
|
|
* @fsckd: FS checking information
|
|
|
|
|
* @inum: inode number to search
|
|
|
|
|
*
|
|
|
|
|
* This is a helper function for 'check_leaf()' which searches inode @inum in
|
|
|
|
|
* the RB-tree of inodes and returns an inode information pointer or %NULL if
|
|
|
|
|
* the inode was not found.
|
|
|
|
|
*/
|
|
|
|
|
static struct fsck_inode *search_inode(struct fsck_data *fsckd, ino_t inum)
|
|
|
|
|
{
|
|
|
|
|
struct rb_node *p;
|
|
|
|
|
struct fsck_inode *fscki;
|
|
|
|
|
|
|
|
|
|
p = fsckd->inodes.rb_node;
|
|
|
|
|
while (p) {
|
|
|
|
|
fscki = rb_entry(p, struct fsck_inode, rb);
|
|
|
|
|
if (inum < fscki->inum)
|
|
|
|
|
p = p->rb_left;
|
|
|
|
|
else if (inum > fscki->inum)
|
|
|
|
|
p = p->rb_right;
|
|
|
|
|
else
|
|
|
|
|
return fscki;
|
|
|
|
|
}
|
|
|
|
|
return NULL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* read_add_inode - read inode node and add it to RB-tree of inodes.
|
|
|
|
|
* @c: UBIFS file-system description object
|
|
|
|
|
* @fsckd: FS checking information
|
|
|
|
|
* @inum: inode number to read
|
|
|
|
|
*
|
|
|
|
|
* This is a helper function for 'check_leaf()' which finds inode node @inum in
|
|
|
|
|
* the index, reads it, and adds it to the RB-tree of inodes. Returns inode
|
|
|
|
|
* information pointer in case of success and a negative error code in case of
|
|
|
|
|
* failure.
|
|
|
|
|
*/
|
|
|
|
|
static struct fsck_inode *read_add_inode(struct ubifs_info *c,
|
|
|
|
|
struct fsck_data *fsckd, ino_t inum)
|
|
|
|
|
{
|
|
|
|
|
int n, err;
|
|
|
|
|
union ubifs_key key;
|
|
|
|
|
struct ubifs_znode *znode;
|
|
|
|
|
struct ubifs_zbranch *zbr;
|
|
|
|
|
struct ubifs_ino_node *ino;
|
|
|
|
|
struct fsck_inode *fscki;
|
|
|
|
|
|
|
|
|
|
fscki = search_inode(fsckd, inum);
|
|
|
|
|
if (fscki)
|
|
|
|
|
return fscki;
|
|
|
|
|
|
|
|
|
|
ino_key_init(c, &key, inum);
|
|
|
|
|
err = ubifs_lookup_level0(c, &key, &znode, &n);
|
|
|
|
|
if (!err) {
|
|
|
|
|
ubifs_err("inode %lu not found in index", inum);
|
|
|
|
|
return ERR_PTR(-ENOENT);
|
|
|
|
|
} else if (err < 0) {
|
|
|
|
|
ubifs_err("error %d while looking up inode %lu", err, inum);
|
|
|
|
|
return ERR_PTR(err);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
zbr = &znode->zbranch[n];
|
|
|
|
|
if (zbr->len < UBIFS_INO_NODE_SZ) {
|
|
|
|
|
ubifs_err("bad node %lu node length %d", inum, zbr->len);
|
|
|
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
ino = kmalloc(zbr->len, GFP_NOFS);
|
|
|
|
|
if (!ino)
|
|
|
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
|
|
|
|
|
|
err = ubifs_tnc_read_node(c, zbr, ino);
|
|
|
|
|
if (err) {
|
|
|
|
|
ubifs_err("cannot read inode node at LEB %d:%d, error %d",
|
|
|
|
|
zbr->lnum, zbr->offs, err);
|
|
|
|
|
kfree(ino);
|
|
|
|
|
return ERR_PTR(err);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
fscki = add_inode(c, fsckd, ino);
|
|
|
|
|
kfree(ino);
|
|
|
|
|
if (IS_ERR(fscki)) {
|
|
|
|
|
ubifs_err("error %ld while adding inode %lu node",
|
|
|
|
|
PTR_ERR(fscki), inum);
|
|
|
|
|
return fscki;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return fscki;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* check_leaf - check leaf node.
|
|
|
|
|
* @c: UBIFS file-system description object
|
|
|
|
|
* @zbr: zbranch of the leaf node to check
|
|
|
|
|
* @priv: FS checking information
|
|
|
|
|
*
|
|
|
|
|
* This is a helper function for 'dbg_check_filesystem()' which is called for
|
|
|
|
|
* every single leaf node while walking the indexing tree. It checks that the
|
|
|
|
|
* leaf node referred from the indexing tree exists, has correct CRC, and does
|
|
|
|
|
* some other basic validation. This function is also responsible for building
|
|
|
|
|
* an RB-tree of inodes - it adds all inodes into the RB-tree. It also
|
|
|
|
|
* calculates reference count, size, etc for each inode in order to later
|
|
|
|
|
* compare them to the information stored inside the inodes and detect possible
|
|
|
|
|
* inconsistencies. Returns zero in case of success and a negative error code
|
|
|
|
|
* in case of failure.
|
|
|
|
|
*/
|
|
|
|
|
static int check_leaf(struct ubifs_info *c, struct ubifs_zbranch *zbr,
|
|
|
|
|
void *priv)
|
|
|
|
|
{
|
|
|
|
|
ino_t inum;
|
|
|
|
|
void *node;
|
|
|
|
|
struct ubifs_ch *ch;
|
|
|
|
|
int err, type = key_type(c, &zbr->key);
|
|
|
|
|
struct fsck_inode *fscki;
|
|
|
|
|
|
|
|
|
|
if (zbr->len < UBIFS_CH_SZ) {
|
|
|
|
|
ubifs_err("bad leaf length %d (LEB %d:%d)",
|
|
|
|
|
zbr->len, zbr->lnum, zbr->offs);
|
|
|
|
|
return -EINVAL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
node = kmalloc(zbr->len, GFP_NOFS);
|
|
|
|
|
if (!node)
|
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
|
|
err = ubifs_tnc_read_node(c, zbr, node);
|
|
|
|
|
if (err) {
|
|
|
|
|
ubifs_err("cannot read leaf node at LEB %d:%d, error %d",
|
|
|
|
|
zbr->lnum, zbr->offs, err);
|
|
|
|
|
goto out_free;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* If this is an inode node, add it to RB-tree of inodes */
|
|
|
|
|
if (type == UBIFS_INO_KEY) {
|
|
|
|
|
fscki = add_inode(c, priv, node);
|
|
|
|
|
if (IS_ERR(fscki)) {
|
|
|
|
|
err = PTR_ERR(fscki);
|
|
|
|
|
ubifs_err("error %d while adding inode node", err);
|
|
|
|
|
goto out_dump;
|
|
|
|
|
}
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (type != UBIFS_DENT_KEY && type != UBIFS_XENT_KEY &&
|
|
|
|
|
type != UBIFS_DATA_KEY) {
|
|
|
|
|
ubifs_err("unexpected node type %d at LEB %d:%d",
|
|
|
|
|
type, zbr->lnum, zbr->offs);
|
|
|
|
|
err = -EINVAL;
|
|
|
|
|
goto out_free;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
ch = node;
|
|
|
|
|
if (le64_to_cpu(ch->sqnum) > c->max_sqnum) {
|
|
|
|
|
ubifs_err("too high sequence number, max. is %llu",
|
|
|
|
|
c->max_sqnum);
|
|
|
|
|
err = -EINVAL;
|
|
|
|
|
goto out_dump;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (type == UBIFS_DATA_KEY) {
|
|
|
|
|
long long blk_offs;
|
|
|
|
|
struct ubifs_data_node *dn = node;
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Search the inode node this data node belongs to and insert
|
|
|
|
|
* it to the RB-tree of inodes.
|
|
|
|
|
*/
|
|
|
|
|
inum = key_inum_flash(c, &dn->key);
|
|
|
|
|
fscki = read_add_inode(c, priv, inum);
|
|
|
|
|
if (IS_ERR(fscki)) {
|
|
|
|
|
err = PTR_ERR(fscki);
|
|
|
|
|
ubifs_err("error %d while processing data node and "
|
|
|
|
|
"trying to find inode node %lu", err, inum);
|
|
|
|
|
goto out_dump;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Make sure the data node is within inode size */
|
|
|
|
|
blk_offs = key_block_flash(c, &dn->key);
|
|
|
|
|
blk_offs <<= UBIFS_BLOCK_SHIFT;
|
|
|
|
|
blk_offs += le32_to_cpu(dn->size);
|
|
|
|
|
if (blk_offs > fscki->size) {
|
|
|
|
|
ubifs_err("data node at LEB %d:%d is not within inode "
|
|
|
|
|
"size %lld", zbr->lnum, zbr->offs,
|
|
|
|
|
fscki->size);
|
|
|
|
|
err = -EINVAL;
|
|
|
|
|
goto out_dump;
|
|
|
|
|
}
|
|
|
|
|
} else {
|
|
|
|
|
int nlen;
|
|
|
|
|
struct ubifs_dent_node *dent = node;
|
|
|
|
|
struct fsck_inode *fscki1;
|
|
|
|
|
|
|
|
|
|
err = ubifs_validate_entry(c, dent);
|
|
|
|
|
if (err)
|
|
|
|
|
goto out_dump;
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Search the inode node this entry refers to and the parent
|
|
|
|
|
* inode node and insert them to the RB-tree of inodes.
|
|
|
|
|
*/
|
|
|
|
|
inum = le64_to_cpu(dent->inum);
|
|
|
|
|
fscki = read_add_inode(c, priv, inum);
|
|
|
|
|
if (IS_ERR(fscki)) {
|
|
|
|
|
err = PTR_ERR(fscki);
|
|
|
|
|
ubifs_err("error %d while processing entry node and "
|
|
|
|
|
"trying to find inode node %lu", err, inum);
|
|
|
|
|
goto out_dump;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Count how many direntries or xentries refers this inode */
|
|
|
|
|
fscki->references += 1;
|
|
|
|
|
|
|
|
|
|
inum = key_inum_flash(c, &dent->key);
|
|
|
|
|
fscki1 = read_add_inode(c, priv, inum);
|
|
|
|
|
if (IS_ERR(fscki1)) {
|
|
|
|
|
err = PTR_ERR(fscki);
|
|
|
|
|
ubifs_err("error %d while processing entry node and "
|
|
|
|
|
"trying to find parent inode node %lu",
|
|
|
|
|
err, inum);
|
|
|
|
|
goto out_dump;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
nlen = le16_to_cpu(dent->nlen);
|
|
|
|
|
if (type == UBIFS_XENT_KEY) {
|
|
|
|
|
fscki1->calc_xcnt += 1;
|
|
|
|
|
fscki1->calc_xsz += CALC_DENT_SIZE(nlen);
|
|
|
|
|
fscki1->calc_xsz += CALC_XATTR_BYTES(fscki->size);
|
|
|
|
|
fscki1->calc_xnms += nlen;
|
|
|
|
|
} else {
|
|
|
|
|
fscki1->calc_sz += CALC_DENT_SIZE(nlen);
|
|
|
|
|
if (dent->type == UBIFS_ITYPE_DIR)
|
|
|
|
|
fscki1->calc_cnt += 1;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
out:
|
|
|
|
|
kfree(node);
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
out_dump:
|
|
|
|
|
ubifs_msg("dump of node at LEB %d:%d", zbr->lnum, zbr->offs);
|
|
|
|
|
dbg_dump_node(c, node);
|
|
|
|
|
out_free:
|
|
|
|
|
kfree(node);
|
|
|
|
|
return err;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* free_inodes - free RB-tree of inodes.
|
|
|
|
|
* @fsckd: FS checking information
|
|
|
|
|
*/
|
|
|
|
|
static void free_inodes(struct fsck_data *fsckd)
|
|
|
|
|
{
|
|
|
|
|
struct rb_node *this = fsckd->inodes.rb_node;
|
|
|
|
|
struct fsck_inode *fscki;
|
|
|
|
|
|
|
|
|
|
while (this) {
|
|
|
|
|
if (this->rb_left)
|
|
|
|
|
this = this->rb_left;
|
|
|
|
|
else if (this->rb_right)
|
|
|
|
|
this = this->rb_right;
|
|
|
|
|
else {
|
|
|
|
|
fscki = rb_entry(this, struct fsck_inode, rb);
|
|
|
|
|
this = rb_parent(this);
|
|
|
|
|
if (this) {
|
|
|
|
|
if (this->rb_left == &fscki->rb)
|
|
|
|
|
this->rb_left = NULL;
|
|
|
|
|
else
|
|
|
|
|
this->rb_right = NULL;
|
|
|
|
|
}
|
|
|
|
|
kfree(fscki);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* check_inodes - checks all inodes.
|
|
|
|
|
* @c: UBIFS file-system description object
|
|
|
|
|
* @fsckd: FS checking information
|
|
|
|
|
*
|
|
|
|
|
* This is a helper function for 'dbg_check_filesystem()' which walks the
|
|
|
|
|
* RB-tree of inodes after the index scan has been finished, and checks that
|
|
|
|
|
* inode nlink, size, etc are correct. Returns zero if inodes are fine,
|
|
|
|
|
* %-EINVAL if not, and a negative error code in case of failure.
|
|
|
|
|
*/
|
|
|
|
|
static int check_inodes(struct ubifs_info *c, struct fsck_data *fsckd)
|
|
|
|
|
{
|
|
|
|
|
int n, err;
|
|
|
|
|
union ubifs_key key;
|
|
|
|
|
struct ubifs_znode *znode;
|
|
|
|
|
struct ubifs_zbranch *zbr;
|
|
|
|
|
struct ubifs_ino_node *ino;
|
|
|
|
|
struct fsck_inode *fscki;
|
|
|
|
|
struct rb_node *this = rb_first(&fsckd->inodes);
|
|
|
|
|
|
|
|
|
|
while (this) {
|
|
|
|
|
fscki = rb_entry(this, struct fsck_inode, rb);
|
|
|
|
|
this = rb_next(this);
|
|
|
|
|
|
|
|
|
|
if (S_ISDIR(fscki->mode)) {
|
|
|
|
|
/*
|
|
|
|
|
* Directories have to have exactly one reference (they
|
|
|
|
|
* cannot have hardlinks), although root inode is an
|
|
|
|
|
* exception.
|
|
|
|
|
*/
|
|
|
|
|
if (fscki->inum != UBIFS_ROOT_INO &&
|
|
|
|
|
fscki->references != 1) {
|
|
|
|
|
ubifs_err("directory inode %lu has %d "
|
|
|
|
|
"direntries which refer it, but "
|
|
|
|
|
"should be 1", fscki->inum,
|
|
|
|
|
fscki->references);
|
|
|
|
|
goto out_dump;
|
|
|
|
|
}
|
|
|
|
|
if (fscki->inum == UBIFS_ROOT_INO &&
|
|
|
|
|
fscki->references != 0) {
|
|
|
|
|
ubifs_err("root inode %lu has non-zero (%d) "
|
|
|
|
|
"direntries which refer it",
|
|
|
|
|
fscki->inum, fscki->references);
|
|
|
|
|
goto out_dump;
|
|
|
|
|
}
|
|
|
|
|
if (fscki->calc_sz != fscki->size) {
|
|
|
|
|
ubifs_err("directory inode %lu size is %lld, "
|
|
|
|
|
"but calculated size is %lld",
|
|
|
|
|
fscki->inum, fscki->size,
|
|
|
|
|
fscki->calc_sz);
|
|
|
|
|
goto out_dump;
|
|
|
|
|
}
|
|
|
|
|
if (fscki->calc_cnt != fscki->nlink) {
|
|
|
|
|
ubifs_err("directory inode %lu nlink is %d, "
|
|
|
|
|
"but calculated nlink is %d",
|
|
|
|
|
fscki->inum, fscki->nlink,
|
|
|
|
|
fscki->calc_cnt);
|
|
|
|
|
goto out_dump;
|
|
|
|
|
}
|
|
|
|
|
} else {
|
|
|
|
|
if (fscki->references != fscki->nlink) {
|
|
|
|
|
ubifs_err("inode %lu nlink is %d, but "
|
|
|
|
|
"calculated nlink is %d", fscki->inum,
|
|
|
|
|
fscki->nlink, fscki->references);
|
|
|
|
|
goto out_dump;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
if (fscki->xattr_sz != fscki->calc_xsz) {
|
|
|
|
|
ubifs_err("inode %lu has xattr size %u, but "
|
|
|
|
|
"calculated size is %lld",
|
|
|
|
|
fscki->inum, fscki->xattr_sz,
|
|
|
|
|
fscki->calc_xsz);
|
|
|
|
|
goto out_dump;
|
|
|
|
|
}
|
|
|
|
|
if (fscki->xattr_cnt != fscki->calc_xcnt) {
|
|
|
|
|
ubifs_err("inode %lu has %u xattrs, but "
|
|
|
|
|
"calculated count is %lld", fscki->inum,
|
|
|
|
|
fscki->xattr_cnt, fscki->calc_xcnt);
|
|
|
|
|
goto out_dump;
|
|
|
|
|
}
|
|
|
|
|
if (fscki->xattr_nms != fscki->calc_xnms) {
|
|
|
|
|
ubifs_err("inode %lu has xattr names' size %u, but "
|
|
|
|
|
"calculated names' size is %lld",
|
|
|
|
|
fscki->inum, fscki->xattr_nms,
|
|
|
|
|
fscki->calc_xnms);
|
|
|
|
|
goto out_dump;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
out_dump:
|
|
|
|
|
/* Read the bad inode and dump it */
|
|
|
|
|
ino_key_init(c, &key, fscki->inum);
|
|
|
|
|
err = ubifs_lookup_level0(c, &key, &znode, &n);
|
|
|
|
|
if (!err) {
|
|
|
|
|
ubifs_err("inode %lu not found in index", fscki->inum);
|
|
|
|
|
return -ENOENT;
|
|
|
|
|
} else if (err < 0) {
|
|
|
|
|
ubifs_err("error %d while looking up inode %lu",
|
|
|
|
|
err, fscki->inum);
|
|
|
|
|
return err;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
zbr = &znode->zbranch[n];
|
|
|
|
|
ino = kmalloc(zbr->len, GFP_NOFS);
|
|
|
|
|
if (!ino)
|
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
|
|
err = ubifs_tnc_read_node(c, zbr, ino);
|
|
|
|
|
if (err) {
|
|
|
|
|
ubifs_err("cannot read inode node at LEB %d:%d, error %d",
|
|
|
|
|
zbr->lnum, zbr->offs, err);
|
|
|
|
|
kfree(ino);
|
|
|
|
|
return err;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
ubifs_msg("dump of the inode %lu sitting in LEB %d:%d",
|
|
|
|
|
fscki->inum, zbr->lnum, zbr->offs);
|
|
|
|
|
dbg_dump_node(c, ino);
|
|
|
|
|
kfree(ino);
|
|
|
|
|
return -EINVAL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* dbg_check_filesystem - check the file-system.
|
|
|
|
|
* @c: UBIFS file-system description object
|
|
|
|
|
*
|
|
|
|
|
* This function checks the file system, namely:
|
|
|
|
|
* o makes sure that all leaf nodes exist and their CRCs are correct;
|
|
|
|
|
* o makes sure inode nlink, size, xattr size/count are correct (for all
|
|
|
|
|
* inodes).
|
|
|
|
|
*
|
|
|
|
|
* The function reads whole indexing tree and all nodes, so it is pretty
|
|
|
|
|
* heavy-weight. Returns zero if the file-system is consistent, %-EINVAL if
|
|
|
|
|
* not, and a negative error code in case of failure.
|
|
|
|
|
*/
|
|
|
|
|
int dbg_check_filesystem(struct ubifs_info *c)
|
|
|
|
|
{
|
|
|
|
|
int err;
|
|
|
|
|
struct fsck_data fsckd;
|
|
|
|
|
|
|
|
|
|
if (!(ubifs_chk_flags & UBIFS_CHK_FS))
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
fsckd.inodes = RB_ROOT;
|
|
|
|
|
err = dbg_walk_index(c, check_leaf, NULL, &fsckd);
|
|
|
|
|
if (err)
|
|
|
|
|
goto out_free;
|
|
|
|
|
|
|
|
|
|
err = check_inodes(c, &fsckd);
|
|
|
|
|
if (err)
|
|
|
|
|
goto out_free;
|
|
|
|
|
|
|
|
|
|
free_inodes(&fsckd);
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
out_free:
|
|
|
|
|
ubifs_err("file-system check failed with error %d", err);
|
|
|
|
|
dump_stack();
|
|
|
|
|
free_inodes(&fsckd);
|
|
|
|
|
return err;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int invocation_cnt;
|
|
|
|
|
|
|
|
|
|
int dbg_force_in_the_gaps(void)
|
|
|
|
|
{
|
|
|
|
|
if (!dbg_force_in_the_gaps_enabled)
|
|
|
|
|
return 0;
|
|
|
|
|
/* Force in-the-gaps every 8th commit */
|
|
|
|
|
return !((invocation_cnt++) & 0x7);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Failure mode for recovery testing */
|
|
|
|
|
|
|
|
|
|
#define chance(n, d) (simple_rand() <= (n) * 32768LL / (d))
|
|
|
|
|
|
|
|
|
|
struct failure_mode_info {
|
|
|
|
|
struct list_head list;
|
|
|
|
|
struct ubifs_info *c;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
static LIST_HEAD(fmi_list);
|
|
|
|
|
static DEFINE_SPINLOCK(fmi_lock);
|
|
|
|
|
|
|
|
|
|
static unsigned int next;
|
|
|
|
|
|
|
|
|
|
static int simple_rand(void)
|
|
|
|
|
{
|
|
|
|
|
if (next == 0)
|
|
|
|
|
next = current->pid;
|
|
|
|
|
next = next * 1103515245 + 12345;
|
|
|
|
|
return (next >> 16) & 32767;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void dbg_failure_mode_registration(struct ubifs_info *c)
|
|
|
|
|
{
|
|
|
|
|
struct failure_mode_info *fmi;
|
|
|
|
|
|
|
|
|
|
fmi = kmalloc(sizeof(struct failure_mode_info), GFP_NOFS);
|
|
|
|
|
if (!fmi) {
|
|
|
|
|
dbg_err("Failed to register failure mode - no memory");
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
fmi->c = c;
|
|
|
|
|
spin_lock(&fmi_lock);
|
|
|
|
|
list_add_tail(&fmi->list, &fmi_list);
|
|
|
|
|
spin_unlock(&fmi_lock);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void dbg_failure_mode_deregistration(struct ubifs_info *c)
|
|
|
|
|
{
|
|
|
|
|
struct failure_mode_info *fmi, *tmp;
|
|
|
|
|
|
|
|
|
|
spin_lock(&fmi_lock);
|
|
|
|
|
list_for_each_entry_safe(fmi, tmp, &fmi_list, list)
|
|
|
|
|
if (fmi->c == c) {
|
|
|
|
|
list_del(&fmi->list);
|
|
|
|
|
kfree(fmi);
|
|
|
|
|
}
|
|
|
|
|
spin_unlock(&fmi_lock);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static struct ubifs_info *dbg_find_info(struct ubi_volume_desc *desc)
|
|
|
|
|
{
|
|
|
|
|
struct failure_mode_info *fmi;
|
|
|
|
|
|
|
|
|
|
spin_lock(&fmi_lock);
|
|
|
|
|
list_for_each_entry(fmi, &fmi_list, list)
|
|
|
|
|
if (fmi->c->ubi == desc) {
|
|
|
|
|
struct ubifs_info *c = fmi->c;
|
|
|
|
|
|
|
|
|
|
spin_unlock(&fmi_lock);
|
|
|
|
|
return c;
|
|
|
|
|
}
|
|
|
|
|
spin_unlock(&fmi_lock);
|
|
|
|
|
return NULL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int in_failure_mode(struct ubi_volume_desc *desc)
|
|
|
|
|
{
|
|
|
|
|
struct ubifs_info *c = dbg_find_info(desc);
|
|
|
|
|
|
|
|
|
|
if (c && dbg_failure_mode)
|
|
|
|
|
return c->failure_mode;
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int do_fail(struct ubi_volume_desc *desc, int lnum, int write)
|
|
|
|
|
{
|
|
|
|
|
struct ubifs_info *c = dbg_find_info(desc);
|
|
|
|
|
|
|
|
|
|
if (!c || !dbg_failure_mode)
|
|
|
|
|
return 0;
|
|
|
|
|
if (c->failure_mode)
|
|
|
|
|
return 1;
|
|
|
|
|
if (!c->fail_cnt) {
|
|
|
|
|
/* First call - decide delay to failure */
|
|
|
|
|
if (chance(1, 2)) {
|
|
|
|
|
unsigned int delay = 1 << (simple_rand() >> 11);
|
|
|
|
|
|
|
|
|
|
if (chance(1, 2)) {
|
|
|
|
|
c->fail_delay = 1;
|
|
|
|
|
c->fail_timeout = jiffies +
|
|
|
|
|
msecs_to_jiffies(delay);
|
|
|
|
|
dbg_rcvry("failing after %ums", delay);
|
|
|
|
|
} else {
|
|
|
|
|
c->fail_delay = 2;
|
|
|
|
|
c->fail_cnt_max = delay;
|
|
|
|
|
dbg_rcvry("failing after %u calls", delay);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
c->fail_cnt += 1;
|
|
|
|
|
}
|
|
|
|
|
/* Determine if failure delay has expired */
|
|
|
|
|
if (c->fail_delay == 1) {
|
|
|
|
|
if (time_before(jiffies, c->fail_timeout))
|
|
|
|
|
return 0;
|
|
|
|
|
} else if (c->fail_delay == 2)
|
|
|
|
|
if (c->fail_cnt++ < c->fail_cnt_max)
|
|
|
|
|
return 0;
|
|
|
|
|
if (lnum == UBIFS_SB_LNUM) {
|
|
|
|
|
if (write) {
|
|
|
|
|
if (chance(1, 2))
|
|
|
|
|
return 0;
|
|
|
|
|
} else if (chance(19, 20))
|
|
|
|
|
return 0;
|
|
|
|
|
dbg_rcvry("failing in super block LEB %d", lnum);
|
|
|
|
|
} else if (lnum == UBIFS_MST_LNUM || lnum == UBIFS_MST_LNUM + 1) {
|
|
|
|
|
if (chance(19, 20))
|
|
|
|
|
return 0;
|
|
|
|
|
dbg_rcvry("failing in master LEB %d", lnum);
|
|
|
|
|
} else if (lnum >= UBIFS_LOG_LNUM && lnum <= c->log_last) {
|
|
|
|
|
if (write) {
|
|
|
|
|
if (chance(99, 100))
|
|
|
|
|
return 0;
|
|
|
|
|
} else if (chance(399, 400))
|
|
|
|
|
return 0;
|
|
|
|
|
dbg_rcvry("failing in log LEB %d", lnum);
|
|
|
|
|
} else if (lnum >= c->lpt_first && lnum <= c->lpt_last) {
|
|
|
|
|
if (write) {
|
|
|
|
|
if (chance(7, 8))
|
|
|
|
|
return 0;
|
|
|
|
|
} else if (chance(19, 20))
|
|
|
|
|
return 0;
|
|
|
|
|
dbg_rcvry("failing in LPT LEB %d", lnum);
|
|
|
|
|
} else if (lnum >= c->orph_first && lnum <= c->orph_last) {
|
|
|
|
|
if (write) {
|
|
|
|
|
if (chance(1, 2))
|
|
|
|
|
return 0;
|
|
|
|
|
} else if (chance(9, 10))
|
|
|
|
|
return 0;
|
|
|
|
|
dbg_rcvry("failing in orphan LEB %d", lnum);
|
|
|
|
|
} else if (lnum == c->ihead_lnum) {
|
|
|
|
|
if (chance(99, 100))
|
|
|
|
|
return 0;
|
|
|
|
|
dbg_rcvry("failing in index head LEB %d", lnum);
|
|
|
|
|
} else if (c->jheads && lnum == c->jheads[GCHD].wbuf.lnum) {
|
|
|
|
|
if (chance(9, 10))
|
|
|
|
|
return 0;
|
|
|
|
|
dbg_rcvry("failing in GC head LEB %d", lnum);
|
|
|
|
|
} else if (write && !RB_EMPTY_ROOT(&c->buds) &&
|
|
|
|
|
!ubifs_search_bud(c, lnum)) {
|
|
|
|
|
if (chance(19, 20))
|
|
|
|
|
return 0;
|
|
|
|
|
dbg_rcvry("failing in non-bud LEB %d", lnum);
|
|
|
|
|
} else if (c->cmt_state == COMMIT_RUNNING_BACKGROUND ||
|
|
|
|
|
c->cmt_state == COMMIT_RUNNING_REQUIRED) {
|
|
|
|
|
if (chance(999, 1000))
|
|
|
|
|
return 0;
|
|
|
|
|
dbg_rcvry("failing in bud LEB %d commit running", lnum);
|
|
|
|
|
} else {
|
|
|
|
|
if (chance(9999, 10000))
|
|
|
|
|
return 0;
|
|
|
|
|
dbg_rcvry("failing in bud LEB %d commit not running", lnum);
|
|
|
|
|
}
|
|
|
|
|
ubifs_err("*** SETTING FAILURE MODE ON (LEB %d) ***", lnum);
|
|
|
|
|
c->failure_mode = 1;
|
|
|
|
|
dump_stack();
|
|
|
|
|
return 1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void cut_data(const void *buf, int len)
|
|
|
|
|
{
|
|
|
|
|
int flen, i;
|
|
|
|
|
unsigned char *p = (void *)buf;
|
|
|
|
|
|
|
|
|
|
flen = (len * (long long)simple_rand()) >> 15;
|
|
|
|
|
for (i = flen; i < len; i++)
|
|
|
|
|
p[i] = 0xff;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int dbg_leb_read(struct ubi_volume_desc *desc, int lnum, char *buf, int offset,
|
|
|
|
|
int len, int check)
|
|
|
|
|
{
|
|
|
|
|
if (in_failure_mode(desc))
|
|
|
|
|
return -EIO;
|
|
|
|
|
return ubi_leb_read(desc, lnum, buf, offset, len, check);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int dbg_leb_write(struct ubi_volume_desc *desc, int lnum, const void *buf,
|
|
|
|
|
int offset, int len, int dtype)
|
|
|
|
|
{
|
2008-07-18 20:47:41 +07:00
|
|
|
|
int err, failing;
|
2008-07-14 23:08:37 +07:00
|
|
|
|
|
|
|
|
|
if (in_failure_mode(desc))
|
|
|
|
|
return -EIO;
|
2008-07-18 20:47:41 +07:00
|
|
|
|
failing = do_fail(desc, lnum, 1);
|
|
|
|
|
if (failing)
|
2008-07-14 23:08:37 +07:00
|
|
|
|
cut_data(buf, len);
|
|
|
|
|
err = ubi_leb_write(desc, lnum, buf, offset, len, dtype);
|
|
|
|
|
if (err)
|
|
|
|
|
return err;
|
2008-07-18 20:47:41 +07:00
|
|
|
|
if (failing)
|
2008-07-14 23:08:37 +07:00
|
|
|
|
return -EIO;
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int dbg_leb_change(struct ubi_volume_desc *desc, int lnum, const void *buf,
|
|
|
|
|
int len, int dtype)
|
|
|
|
|
{
|
|
|
|
|
int err;
|
|
|
|
|
|
|
|
|
|
if (do_fail(desc, lnum, 1))
|
|
|
|
|
return -EIO;
|
|
|
|
|
err = ubi_leb_change(desc, lnum, buf, len, dtype);
|
|
|
|
|
if (err)
|
|
|
|
|
return err;
|
|
|
|
|
if (do_fail(desc, lnum, 1))
|
|
|
|
|
return -EIO;
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int dbg_leb_erase(struct ubi_volume_desc *desc, int lnum)
|
|
|
|
|
{
|
|
|
|
|
int err;
|
|
|
|
|
|
|
|
|
|
if (do_fail(desc, lnum, 0))
|
|
|
|
|
return -EIO;
|
|
|
|
|
err = ubi_leb_erase(desc, lnum);
|
|
|
|
|
if (err)
|
|
|
|
|
return err;
|
|
|
|
|
if (do_fail(desc, lnum, 0))
|
|
|
|
|
return -EIO;
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int dbg_leb_unmap(struct ubi_volume_desc *desc, int lnum)
|
|
|
|
|
{
|
|
|
|
|
int err;
|
|
|
|
|
|
|
|
|
|
if (do_fail(desc, lnum, 0))
|
|
|
|
|
return -EIO;
|
|
|
|
|
err = ubi_leb_unmap(desc, lnum);
|
|
|
|
|
if (err)
|
|
|
|
|
return err;
|
|
|
|
|
if (do_fail(desc, lnum, 0))
|
|
|
|
|
return -EIO;
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int dbg_is_mapped(struct ubi_volume_desc *desc, int lnum)
|
|
|
|
|
{
|
|
|
|
|
if (in_failure_mode(desc))
|
|
|
|
|
return -EIO;
|
|
|
|
|
return ubi_is_mapped(desc, lnum);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int dbg_leb_map(struct ubi_volume_desc *desc, int lnum, int dtype)
|
|
|
|
|
{
|
|
|
|
|
int err;
|
|
|
|
|
|
|
|
|
|
if (do_fail(desc, lnum, 0))
|
|
|
|
|
return -EIO;
|
|
|
|
|
err = ubi_leb_map(desc, lnum, dtype);
|
|
|
|
|
if (err)
|
|
|
|
|
return err;
|
|
|
|
|
if (do_fail(desc, lnum, 0))
|
|
|
|
|
return -EIO;
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#endif /* CONFIG_UBIFS_FS_DEBUG */
|