475 lines
20 KiB
C
475 lines
20 KiB
C
/*
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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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#ifndef __UBIFS_DEBUG_H__
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#define __UBIFS_DEBUG_H__
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/* Checking helper functions */
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typedef int (*dbg_leaf_callback)(struct ubifs_info *c,
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struct ubifs_zbranch *zbr, void *priv);
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typedef int (*dbg_znode_callback)(struct ubifs_info *c,
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struct ubifs_znode *znode, void *priv);
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#ifdef CONFIG_UBIFS_FS_DEBUG
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/*
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* The UBIFS debugfs directory name pattern and maximum name length (3 for "ubi"
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* + 1 for "_" and plus 2x2 for 2 UBI numbers and 1 for the trailing zero byte.
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*/
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#define UBIFS_DFS_DIR_NAME "ubi%d_%d"
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#define UBIFS_DFS_DIR_LEN (3 + 1 + 2*2 + 1)
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/**
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* ubifs_debug_info - per-FS debugging information.
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* @old_zroot: old index root - used by 'dbg_check_old_index()'
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* @old_zroot_level: old index root level - used by 'dbg_check_old_index()'
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* @old_zroot_sqnum: old index root sqnum - used by 'dbg_check_old_index()'
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*
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* @pc_happened: non-zero if an emulated power cut happened
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* @pc_delay: 0=>don't delay, 1=>delay a time, 2=>delay a number of calls
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* @pc_timeout: time in jiffies when delay of failure mode expires
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* @pc_cnt: current number of calls to failure mode I/O functions
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* @pc_cnt_max: number of calls by which to delay failure mode
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*
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* @chk_lpt_sz: used by LPT tree size checker
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* @chk_lpt_sz2: used by LPT tree size checker
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* @chk_lpt_wastage: used by LPT tree size checker
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* @chk_lpt_lebs: used by LPT tree size checker
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* @new_nhead_offs: used by LPT tree size checker
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* @new_ihead_lnum: used by debugging to check @c->ihead_lnum
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* @new_ihead_offs: used by debugging to check @c->ihead_offs
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*
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* @saved_lst: saved lprops statistics (used by 'dbg_save_space_info()')
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* @saved_bi: saved budgeting information
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* @saved_free: saved amount of free space
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* @saved_idx_gc_cnt: saved value of @c->idx_gc_cnt
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*
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* @chk_gen: if general extra checks are enabled
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* @chk_index: if index xtra checks are enabled
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* @chk_orph: if orphans extra checks are enabled
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* @chk_lprops: if lprops extra checks are enabled
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* @chk_fs: if UBIFS contents extra checks are enabled
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* @tst_rcvry: if UBIFS recovery testing mode enabled
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*
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* @dfs_dir_name: name of debugfs directory containing this file-system's files
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* @dfs_dir: direntry object of the file-system debugfs directory
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* @dfs_dump_lprops: "dump lprops" debugfs knob
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* @dfs_dump_budg: "dump budgeting information" debugfs knob
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* @dfs_dump_tnc: "dump TNC" debugfs knob
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* @dfs_chk_gen: debugfs knob to enable UBIFS general extra checks
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* @dfs_chk_index: debugfs knob to enable UBIFS index extra checks
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* @dfs_chk_orph: debugfs knob to enable UBIFS orphans extra checks
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* @dfs_chk_lprops: debugfs knob to enable UBIFS LEP properties extra checks
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* @dfs_chk_fs: debugfs knob to enable UBIFS contents extra checks
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* @dfs_tst_rcvry: debugfs knob to enable UBIFS recovery testing
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*/
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struct ubifs_debug_info {
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struct ubifs_zbranch old_zroot;
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int old_zroot_level;
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unsigned long long old_zroot_sqnum;
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int pc_happened;
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int pc_delay;
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unsigned long pc_timeout;
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unsigned int pc_cnt;
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unsigned int pc_cnt_max;
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long long chk_lpt_sz;
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long long chk_lpt_sz2;
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long long chk_lpt_wastage;
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int chk_lpt_lebs;
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int new_nhead_offs;
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int new_ihead_lnum;
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int new_ihead_offs;
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struct ubifs_lp_stats saved_lst;
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struct ubifs_budg_info saved_bi;
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long long saved_free;
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int saved_idx_gc_cnt;
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unsigned int chk_gen:1;
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unsigned int chk_index:1;
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unsigned int chk_orph:1;
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unsigned int chk_lprops:1;
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unsigned int chk_fs:1;
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unsigned int tst_rcvry:1;
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char dfs_dir_name[UBIFS_DFS_DIR_LEN + 1];
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struct dentry *dfs_dir;
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struct dentry *dfs_dump_lprops;
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struct dentry *dfs_dump_budg;
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struct dentry *dfs_dump_tnc;
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struct dentry *dfs_chk_gen;
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struct dentry *dfs_chk_index;
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struct dentry *dfs_chk_orph;
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struct dentry *dfs_chk_lprops;
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struct dentry *dfs_chk_fs;
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struct dentry *dfs_tst_rcvry;
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};
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/**
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* ubifs_global_debug_info - global (not per-FS) UBIFS debugging information.
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*
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* @chk_gen: if general extra checks are enabled
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* @chk_index: if index xtra checks are enabled
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* @chk_orph: if orphans extra checks are enabled
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* @chk_lprops: if lprops extra checks are enabled
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* @chk_fs: if UBIFS contents extra checks are enabled
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* @tst_rcvry: if UBIFS recovery testing mode enabled
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*/
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struct ubifs_global_debug_info {
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unsigned int chk_gen:1;
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unsigned int chk_index:1;
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unsigned int chk_orph:1;
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unsigned int chk_lprops:1;
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unsigned int chk_fs:1;
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unsigned int tst_rcvry:1;
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};
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#define ubifs_assert(expr) do { \
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if (unlikely(!(expr))) { \
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printk(KERN_CRIT "UBIFS assert failed in %s at %u (pid %d)\n", \
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__func__, __LINE__, current->pid); \
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dbg_dump_stack(); \
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} \
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} while (0)
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#define ubifs_assert_cmt_locked(c) do { \
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if (unlikely(down_write_trylock(&(c)->commit_sem))) { \
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up_write(&(c)->commit_sem); \
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printk(KERN_CRIT "commit lock is not locked!\n"); \
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ubifs_assert(0); \
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} \
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} while (0)
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#define dbg_dump_stack() dump_stack()
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#define dbg_err(fmt, ...) do { \
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spin_lock(&dbg_lock); \
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ubifs_err(fmt, ##__VA_ARGS__); \
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spin_unlock(&dbg_lock); \
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} while (0)
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const char *dbg_key_str0(const struct ubifs_info *c,
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const union ubifs_key *key);
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const char *dbg_key_str1(const struct ubifs_info *c,
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const union ubifs_key *key);
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/*
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* DBGKEY macros require @dbg_lock to be held, which it is in the dbg message
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* macros.
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*/
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#define DBGKEY(key) dbg_key_str0(c, (key))
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#define DBGKEY1(key) dbg_key_str1(c, (key))
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extern spinlock_t dbg_lock;
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#define ubifs_dbg_msg(type, fmt, ...) do { \
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spin_lock(&dbg_lock); \
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pr_debug("UBIFS DBG " type ": " fmt "\n", ##__VA_ARGS__); \
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spin_unlock(&dbg_lock); \
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} while (0)
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/* Just a debugging messages not related to any specific UBIFS subsystem */
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#define dbg_msg(fmt, ...) ubifs_dbg_msg("msg", fmt, ##__VA_ARGS__)
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/* General messages */
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#define dbg_gen(fmt, ...) ubifs_dbg_msg("gen", fmt, ##__VA_ARGS__)
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/* Additional journal messages */
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#define dbg_jnl(fmt, ...) ubifs_dbg_msg("jnl", fmt, ##__VA_ARGS__)
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/* Additional TNC messages */
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#define dbg_tnc(fmt, ...) ubifs_dbg_msg("tnc", fmt, ##__VA_ARGS__)
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/* Additional lprops messages */
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#define dbg_lp(fmt, ...) ubifs_dbg_msg("lp", fmt, ##__VA_ARGS__)
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/* Additional LEB find messages */
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#define dbg_find(fmt, ...) ubifs_dbg_msg("find", fmt, ##__VA_ARGS__)
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/* Additional mount messages */
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#define dbg_mnt(fmt, ...) ubifs_dbg_msg("mnt", fmt, ##__VA_ARGS__)
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/* Additional I/O messages */
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#define dbg_io(fmt, ...) ubifs_dbg_msg("io", fmt, ##__VA_ARGS__)
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/* Additional commit messages */
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#define dbg_cmt(fmt, ...) ubifs_dbg_msg("cmt", fmt, ##__VA_ARGS__)
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/* Additional budgeting messages */
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#define dbg_budg(fmt, ...) ubifs_dbg_msg("budg", fmt, ##__VA_ARGS__)
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/* Additional log messages */
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#define dbg_log(fmt, ...) ubifs_dbg_msg("log", fmt, ##__VA_ARGS__)
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/* Additional gc messages */
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#define dbg_gc(fmt, ...) ubifs_dbg_msg("gc", fmt, ##__VA_ARGS__)
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/* Additional scan messages */
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#define dbg_scan(fmt, ...) ubifs_dbg_msg("scan", fmt, ##__VA_ARGS__)
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/* Additional recovery messages */
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#define dbg_rcvry(fmt, ...) ubifs_dbg_msg("rcvry", fmt, ##__VA_ARGS__)
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extern struct ubifs_global_debug_info ubifs_dbg;
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static inline int dbg_is_chk_gen(const struct ubifs_info *c)
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{
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return !!(ubifs_dbg.chk_gen || c->dbg->chk_gen);
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}
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static inline int dbg_is_chk_index(const struct ubifs_info *c)
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{
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return !!(ubifs_dbg.chk_index || c->dbg->chk_index);
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}
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static inline int dbg_is_chk_orph(const struct ubifs_info *c)
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{
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return !!(ubifs_dbg.chk_orph || c->dbg->chk_orph);
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}
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static inline int dbg_is_chk_lprops(const struct ubifs_info *c)
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{
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return !!(ubifs_dbg.chk_lprops || c->dbg->chk_lprops);
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}
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static inline int dbg_is_chk_fs(const struct ubifs_info *c)
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{
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return !!(ubifs_dbg.chk_fs || c->dbg->chk_fs);
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}
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static inline int dbg_is_tst_rcvry(const struct ubifs_info *c)
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{
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return !!(ubifs_dbg.tst_rcvry || c->dbg->tst_rcvry);
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}
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static inline int dbg_is_power_cut(const struct ubifs_info *c)
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{
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return !!c->dbg->pc_happened;
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}
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int ubifs_debugging_init(struct ubifs_info *c);
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void ubifs_debugging_exit(struct ubifs_info *c);
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/* Dump functions */
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const char *dbg_ntype(int type);
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const char *dbg_cstate(int cmt_state);
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const char *dbg_jhead(int jhead);
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const char *dbg_get_key_dump(const struct ubifs_info *c,
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const union ubifs_key *key);
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void dbg_dump_inode(struct ubifs_info *c, const struct inode *inode);
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void dbg_dump_node(const struct ubifs_info *c, const void *node);
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void dbg_dump_lpt_node(const struct ubifs_info *c, void *node, int lnum,
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int offs);
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void dbg_dump_budget_req(const struct ubifs_budget_req *req);
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void dbg_dump_lstats(const struct ubifs_lp_stats *lst);
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void dbg_dump_budg(struct ubifs_info *c, const struct ubifs_budg_info *bi);
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void dbg_dump_lprop(const struct ubifs_info *c, const struct ubifs_lprops *lp);
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void dbg_dump_lprops(struct ubifs_info *c);
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void dbg_dump_lpt_info(struct ubifs_info *c);
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void dbg_dump_leb(const struct ubifs_info *c, int lnum);
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void dbg_dump_sleb(const struct ubifs_info *c,
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const struct ubifs_scan_leb *sleb, int offs);
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void dbg_dump_znode(const struct ubifs_info *c,
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const struct ubifs_znode *znode);
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void dbg_dump_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat);
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void dbg_dump_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode,
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struct ubifs_nnode *parent, int iip);
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void dbg_dump_tnc(struct ubifs_info *c);
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void dbg_dump_index(struct ubifs_info *c);
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void dbg_dump_lpt_lebs(const struct ubifs_info *c);
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int dbg_walk_index(struct ubifs_info *c, dbg_leaf_callback leaf_cb,
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dbg_znode_callback znode_cb, void *priv);
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/* Checking functions */
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void dbg_save_space_info(struct ubifs_info *c);
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int dbg_check_space_info(struct ubifs_info *c);
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int dbg_check_lprops(struct ubifs_info *c);
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int dbg_old_index_check_init(struct ubifs_info *c, struct ubifs_zbranch *zroot);
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int dbg_check_old_index(struct ubifs_info *c, struct ubifs_zbranch *zroot);
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int dbg_check_cats(struct ubifs_info *c);
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int dbg_check_ltab(struct ubifs_info *c);
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int dbg_chk_lpt_free_spc(struct ubifs_info *c);
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int dbg_chk_lpt_sz(struct ubifs_info *c, int action, int len);
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int dbg_check_synced_i_size(const struct ubifs_info *c, struct inode *inode);
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int dbg_check_dir(struct ubifs_info *c, const struct inode *dir);
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int dbg_check_tnc(struct ubifs_info *c, int extra);
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int dbg_check_idx_size(struct ubifs_info *c, long long idx_size);
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int dbg_check_filesystem(struct ubifs_info *c);
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void dbg_check_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat,
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int add_pos);
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int dbg_check_lpt_nodes(struct ubifs_info *c, struct ubifs_cnode *cnode,
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int row, int col);
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int dbg_check_inode_size(struct ubifs_info *c, const struct inode *inode,
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loff_t size);
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int dbg_check_data_nodes_order(struct ubifs_info *c, struct list_head *head);
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int dbg_check_nondata_nodes_order(struct ubifs_info *c, struct list_head *head);
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int dbg_leb_write(struct ubifs_info *c, int lnum, const void *buf, int offs,
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int len, int dtype);
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int dbg_leb_change(struct ubifs_info *c, int lnum, const void *buf, int len,
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int dtype);
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int dbg_leb_unmap(struct ubifs_info *c, int lnum);
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int dbg_leb_map(struct ubifs_info *c, int lnum, int dtype);
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/* Debugfs-related stuff */
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int dbg_debugfs_init(void);
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void dbg_debugfs_exit(void);
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int dbg_debugfs_init_fs(struct ubifs_info *c);
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void dbg_debugfs_exit_fs(struct ubifs_info *c);
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#else /* !CONFIG_UBIFS_FS_DEBUG */
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/* Use "if (0)" to make compiler check arguments even if debugging is off */
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#define ubifs_assert(expr) do { \
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if (0) \
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printk(KERN_CRIT "UBIFS assert failed in %s at %u (pid %d)\n", \
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__func__, __LINE__, current->pid); \
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} while (0)
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#define dbg_err(fmt, ...) do { \
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if (0) \
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ubifs_err(fmt, ##__VA_ARGS__); \
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} while (0)
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#define DBGKEY(key) ((char *)(key))
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#define DBGKEY1(key) ((char *)(key))
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#define ubifs_dbg_msg(fmt, ...) do { \
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if (0) \
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printk(KERN_DEBUG fmt "\n", ##__VA_ARGS__); \
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} while (0)
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#define dbg_dump_stack()
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#define ubifs_assert_cmt_locked(c)
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#define dbg_msg(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_gen(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_jnl(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_tnc(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_lp(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_find(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_mnt(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_io(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_cmt(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_budg(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_log(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_gc(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_scan(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_rcvry(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
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static inline int ubifs_debugging_init(struct ubifs_info *c) { return 0; }
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static inline void ubifs_debugging_exit(struct ubifs_info *c) { return; }
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static inline const char *dbg_ntype(int type) { return ""; }
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static inline const char *dbg_cstate(int cmt_state) { return ""; }
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static inline const char *dbg_jhead(int jhead) { return ""; }
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static inline const char *
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dbg_get_key_dump(const struct ubifs_info *c,
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const union ubifs_key *key) { return ""; }
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static inline void dbg_dump_inode(struct ubifs_info *c,
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const struct inode *inode) { return; }
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static inline void dbg_dump_node(const struct ubifs_info *c,
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const void *node) { return; }
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static inline void dbg_dump_lpt_node(const struct ubifs_info *c,
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void *node, int lnum,
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int offs) { return; }
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static inline void
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dbg_dump_budget_req(const struct ubifs_budget_req *req) { return; }
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static inline void
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dbg_dump_lstats(const struct ubifs_lp_stats *lst) { return; }
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static inline void
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dbg_dump_budg(struct ubifs_info *c,
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const struct ubifs_budg_info *bi) { return; }
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static inline void dbg_dump_lprop(const struct ubifs_info *c,
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const struct ubifs_lprops *lp) { return; }
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static inline void dbg_dump_lprops(struct ubifs_info *c) { return; }
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static inline void dbg_dump_lpt_info(struct ubifs_info *c) { return; }
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static inline void dbg_dump_leb(const struct ubifs_info *c,
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int lnum) { return; }
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static inline void
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dbg_dump_sleb(const struct ubifs_info *c,
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const struct ubifs_scan_leb *sleb, int offs) { return; }
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static inline void
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dbg_dump_znode(const struct ubifs_info *c,
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const struct ubifs_znode *znode) { return; }
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static inline void dbg_dump_heap(struct ubifs_info *c,
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struct ubifs_lpt_heap *heap,
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int cat) { return; }
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static inline void dbg_dump_pnode(struct ubifs_info *c,
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struct ubifs_pnode *pnode,
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struct ubifs_nnode *parent,
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int iip) { return; }
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static inline void dbg_dump_tnc(struct ubifs_info *c) { return; }
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static inline void dbg_dump_index(struct ubifs_info *c) { return; }
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static inline void dbg_dump_lpt_lebs(const struct ubifs_info *c) { return; }
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static inline int dbg_walk_index(struct ubifs_info *c,
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dbg_leaf_callback leaf_cb,
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dbg_znode_callback znode_cb,
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void *priv) { return 0; }
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static inline void dbg_save_space_info(struct ubifs_info *c) { return; }
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static inline int dbg_check_space_info(struct ubifs_info *c) { return 0; }
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static inline int dbg_check_lprops(struct ubifs_info *c) { return 0; }
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static inline int
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dbg_old_index_check_init(struct ubifs_info *c,
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struct ubifs_zbranch *zroot) { return 0; }
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static inline int
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dbg_check_old_index(struct ubifs_info *c,
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struct ubifs_zbranch *zroot) { return 0; }
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static inline int dbg_check_cats(struct ubifs_info *c) { return 0; }
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static inline int dbg_check_ltab(struct ubifs_info *c) { return 0; }
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static inline int dbg_chk_lpt_free_spc(struct ubifs_info *c) { return 0; }
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static inline int dbg_chk_lpt_sz(struct ubifs_info *c,
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int action, int len) { return 0; }
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static inline int
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dbg_check_synced_i_size(const struct ubifs_info *c,
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struct inode *inode) { return 0; }
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static inline int dbg_check_dir(struct ubifs_info *c,
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const struct inode *dir) { return 0; }
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static inline int dbg_check_tnc(struct ubifs_info *c, int extra) { return 0; }
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static inline int dbg_check_idx_size(struct ubifs_info *c,
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|
long long idx_size) { return 0; }
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static inline int dbg_check_filesystem(struct ubifs_info *c) { return 0; }
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|
static inline void dbg_check_heap(struct ubifs_info *c,
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|
struct ubifs_lpt_heap *heap,
|
|
int cat, int add_pos) { return; }
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|
static inline int dbg_check_lpt_nodes(struct ubifs_info *c,
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|
struct ubifs_cnode *cnode, int row, int col) { return 0; }
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static inline int dbg_check_inode_size(struct ubifs_info *c,
|
|
const struct inode *inode,
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|
loff_t size) { return 0; }
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|
static inline int
|
|
dbg_check_data_nodes_order(struct ubifs_info *c,
|
|
struct list_head *head) { return 0; }
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|
static inline int
|
|
dbg_check_nondata_nodes_order(struct ubifs_info *c,
|
|
struct list_head *head) { return 0; }
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|
|
|
static inline int dbg_leb_write(struct ubifs_info *c, int lnum,
|
|
const void *buf, int offset,
|
|
int len, int dtype) { return 0; }
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|
static inline int dbg_leb_change(struct ubifs_info *c, int lnum,
|
|
const void *buf, int len,
|
|
int dtype) { return 0; }
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|
static inline int dbg_leb_unmap(struct ubifs_info *c, int lnum) { return 0; }
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|
static inline int dbg_leb_map(struct ubifs_info *c, int lnum,
|
|
int dtype) { return 0; }
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|
|
|
static inline int dbg_is_chk_gen(const struct ubifs_info *c) { return 0; }
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|
static inline int dbg_is_chk_index(const struct ubifs_info *c) { return 0; }
|
|
static inline int dbg_is_chk_orph(const struct ubifs_info *c) { return 0; }
|
|
static inline int dbg_is_chk_lprops(const struct ubifs_info *c) { return 0; }
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|
static inline int dbg_is_chk_fs(const struct ubifs_info *c) { return 0; }
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|
static inline int dbg_is_tst_rcvry(const struct ubifs_info *c) { return 0; }
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|
static inline int dbg_is_power_cut(const struct ubifs_info *c) { return 0; }
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|
|
|
static inline int dbg_debugfs_init(void) { return 0; }
|
|
static inline void dbg_debugfs_exit(void) { return; }
|
|
static inline int dbg_debugfs_init_fs(struct ubifs_info *c) { return 0; }
|
|
static inline int dbg_debugfs_exit_fs(struct ubifs_info *c) { return 0; }
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|
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#endif /* !CONFIG_UBIFS_FS_DEBUG */
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#endif /* !__UBIFS_DEBUG_H__ */
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