2b1844a8c9
This patch introduces helper functions for all debugging checks, so instead of doing if (!(ubifs_chk_flags & UBIFS_CHK_GEN)) we now do if (!dbg_is_chk_gen(c)) This is a preparation to further changes where the flags will go away, and we'll need to only change the helper functions, but the code which utilizes them won't be touched. At the same time this patch removes 'dbg_force_in_the_gaps()', 'dbg_force_in_the_gaps_enabled()', and dbg_failure_mode helpers for consistency. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
480 lines
20 KiB
C
480 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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* @failure_mode: failure mode for recovery testing
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* @fail_delay: 0=>don't delay, 1=>delay a time, 2=>delay a number of calls
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* @fail_timeout: time in jiffies when delay of failure mode expires
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* @fail_cnt: current number of calls to failure mode I/O functions
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* @fail_cnt_max: number of calls by which to delay failure mode
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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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* @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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*/
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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 failure_mode;
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int fail_delay;
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unsigned long fail_timeout;
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unsigned int fail_cnt;
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unsigned int fail_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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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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};
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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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#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 spinlock_t dbg_lock;
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/*
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* Debugging check flags.
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*
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* UBIFS_CHK_GEN: general checks
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* UBIFS_CHK_TNC: check TNC
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* UBIFS_CHK_IDX_SZ: check index size
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* UBIFS_CHK_ORPH: check orphans
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* UBIFS_CHK_OLD_IDX: check the old index
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* UBIFS_CHK_LPROPS: check lprops
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* UBIFS_CHK_FS: check the file-system
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*/
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enum {
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UBIFS_CHK_GEN = 0x1,
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UBIFS_CHK_TNC = 0x2,
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UBIFS_CHK_IDX_SZ = 0x4,
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UBIFS_CHK_ORPH = 0x8,
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UBIFS_CHK_OLD_IDX = 0x10,
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UBIFS_CHK_LPROPS = 0x20,
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UBIFS_CHK_FS = 0x40,
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};
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/*
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* Special testing flags.
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*
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* UBIFS_TST_RCVRY: failure mode for recovery testing
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*/
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enum {
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UBIFS_TST_RCVRY = 0x4,
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};
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extern unsigned int ubifs_msg_flags;
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extern unsigned int ubifs_chk_flags;
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extern unsigned int ubifs_tst_flags;
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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_chk_flags & UBIFS_CHK_GEN);
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}
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static inline int dbg_is_chk_tnc(const struct ubifs_info *c)
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{
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return !!(ubifs_chk_flags & UBIFS_CHK_TNC);
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}
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static inline int dbg_is_chk_idx_sz(const struct ubifs_info *c)
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{
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return !!(ubifs_chk_flags & UBIFS_CHK_IDX_SZ);
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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_chk_flags & UBIFS_CHK_ORPH);
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}
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static inline int dbg_is_chk_old_idx(const struct ubifs_info *c)
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{
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return !!(ubifs_chk_flags & UBIFS_CHK_OLD_IDX);
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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_chk_flags & UBIFS_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_chk_flags & UBIFS_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_tst_flags & UBIFS_TST_RCVRY);
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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_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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#ifndef UBIFS_DBG_PRESERVE_UBI
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#define ubi_leb_read dbg_leb_read
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#define ubi_leb_write dbg_leb_write
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#define ubi_leb_change dbg_leb_change
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#define ubi_leb_erase dbg_leb_erase
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#define ubi_leb_unmap dbg_leb_unmap
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#define ubi_is_mapped dbg_is_mapped
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#define ubi_leb_map dbg_leb_map
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#endif
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int dbg_leb_read(struct ubi_volume_desc *desc, int lnum, char *buf, int offset,
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int len, int check);
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int dbg_leb_write(struct ubi_volume_desc *desc, int lnum, const void *buf,
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int offset, int len, int dtype);
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int dbg_leb_change(struct ubi_volume_desc *desc, int lnum, const void *buf,
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int len, int dtype);
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int dbg_leb_erase(struct ubi_volume_desc *desc, int lnum);
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int dbg_leb_unmap(struct ubi_volume_desc *desc, int lnum);
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int dbg_is_mapped(struct ubi_volume_desc *desc, int lnum);
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int dbg_leb_map(struct ubi_volume_desc *desc, int lnum, int dtype);
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static inline int dbg_read(struct ubi_volume_desc *desc, int lnum, char *buf,
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int offset, int len)
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{
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return dbg_leb_read(desc, lnum, buf, offset, len, 0);
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}
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static inline int dbg_write(struct ubi_volume_desc *desc, int lnum,
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const void *buf, int offset, int len)
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{
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return dbg_leb_write(desc, lnum, buf, offset, len, UBI_UNKNOWN);
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}
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static inline int dbg_change(struct ubi_volume_desc *desc, int lnum,
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const void *buf, int len)
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{
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return dbg_leb_change(desc, lnum, buf, len, UBI_UNKNOWN);
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}
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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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pr_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_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,
|
|
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
|
|
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
|
|
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,
|
|
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,
|
|
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,
|
|
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,
|
|
loff_t size) { return 0; }
|
|
static inline int
|
|
dbg_check_data_nodes_order(struct ubifs_info *c,
|
|
struct list_head *head) { return 0; }
|
|
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_is_chk_gen(const struct ubifs_info *c) { return 0; }
|
|
static inline int dbg_is_chk_tnc(const struct ubifs_info *c) { return 0; }
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|
static inline int dbg_is_chk_idx_sz(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_old_idx(const struct ubifs_info *c) { return 0; }
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|
static inline int dbg_is_chk_lprops(const struct ubifs_info *c) { return 0; }
|
|
static inline int dbg_is_chk_fs(const struct ubifs_info *c) { return 0; }
|
|
static inline int dbg_is_tst_rcvry(const struct ubifs_info *c) { return 0; }
|
|
|
|
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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|
|
|
#endif /* !CONFIG_UBIFS_FS_DEBUG */
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|
#endif /* !__UBIFS_DEBUG_H__ */
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