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3bb66b47a4
The UBIFS bug in the GC list sorting comparison functions inspired me to write internal debugging check functions which verify that the list of nodes is sorted properly. So, this patch implements 2 new debugging functions: o 'dbg_check_data_nodes_order()' - check order of data nodes list o 'dbg_check_nondata_nodes_order()' - check order of non-data nodes list The debugging functions are executed only if general UBIFS debugging checks are enabled. And they are compiled out if UBIFS debugging is disabled. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
482 lines
18 KiB
C
482 lines
18 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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#ifdef CONFIG_UBIFS_FS_DEBUG
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/**
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* ubifs_debug_info - per-FS debugging information.
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* @buf: a buffer of LEB size, used for various purposes
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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_free: saved free space (used by 'dbg_save_space_info()')
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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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void *buf;
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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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long long saved_free;
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char dfs_dir_name[100];
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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() do { \
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if (!dbg_failure_mode) \
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dump_stack(); \
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} while (0)
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/* Generic debugging messages */
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#define dbg_msg(fmt, ...) do { \
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spin_lock(&dbg_lock); \
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printk(KERN_DEBUG "UBIFS DBG (pid %d): %s: " fmt "\n", current->pid, \
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__func__, ##__VA_ARGS__); \
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spin_unlock(&dbg_lock); \
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} while (0)
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#define dbg_do_msg(typ, fmt, ...) do { \
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if (ubifs_msg_flags & typ) \
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dbg_msg(fmt, ##__VA_ARGS__); \
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} while (0)
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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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/* General messages */
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#define dbg_gen(fmt, ...) dbg_do_msg(UBIFS_MSG_GEN, fmt, ##__VA_ARGS__)
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/* Additional journal messages */
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#define dbg_jnl(fmt, ...) dbg_do_msg(UBIFS_MSG_JNL, fmt, ##__VA_ARGS__)
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/* Additional TNC messages */
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#define dbg_tnc(fmt, ...) dbg_do_msg(UBIFS_MSG_TNC, fmt, ##__VA_ARGS__)
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/* Additional lprops messages */
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#define dbg_lp(fmt, ...) dbg_do_msg(UBIFS_MSG_LP, fmt, ##__VA_ARGS__)
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/* Additional LEB find messages */
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#define dbg_find(fmt, ...) dbg_do_msg(UBIFS_MSG_FIND, fmt, ##__VA_ARGS__)
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/* Additional mount messages */
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#define dbg_mnt(fmt, ...) dbg_do_msg(UBIFS_MSG_MNT, fmt, ##__VA_ARGS__)
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/* Additional I/O messages */
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#define dbg_io(fmt, ...) dbg_do_msg(UBIFS_MSG_IO, fmt, ##__VA_ARGS__)
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/* Additional commit messages */
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#define dbg_cmt(fmt, ...) dbg_do_msg(UBIFS_MSG_CMT, fmt, ##__VA_ARGS__)
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/* Additional budgeting messages */
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#define dbg_budg(fmt, ...) dbg_do_msg(UBIFS_MSG_BUDG, fmt, ##__VA_ARGS__)
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/* Additional log messages */
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#define dbg_log(fmt, ...) dbg_do_msg(UBIFS_MSG_LOG, fmt, ##__VA_ARGS__)
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/* Additional gc messages */
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#define dbg_gc(fmt, ...) dbg_do_msg(UBIFS_MSG_GC, fmt, ##__VA_ARGS__)
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/* Additional scan messages */
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#define dbg_scan(fmt, ...) dbg_do_msg(UBIFS_MSG_SCAN, fmt, ##__VA_ARGS__)
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/* Additional recovery messages */
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#define dbg_rcvry(fmt, ...) dbg_do_msg(UBIFS_MSG_RCVRY, fmt, ##__VA_ARGS__)
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/*
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* Debugging message type flags (must match msg_type_names in debug.c).
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*
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* UBIFS_MSG_GEN: general messages
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* UBIFS_MSG_JNL: journal messages
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* UBIFS_MSG_MNT: mount messages
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* UBIFS_MSG_CMT: commit messages
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* UBIFS_MSG_FIND: LEB find messages
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* UBIFS_MSG_BUDG: budgeting messages
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* UBIFS_MSG_GC: garbage collection messages
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* UBIFS_MSG_TNC: TNC messages
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* UBIFS_MSG_LP: lprops messages
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* UBIFS_MSG_IO: I/O messages
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* UBIFS_MSG_LOG: log messages
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* UBIFS_MSG_SCAN: scan messages
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* UBIFS_MSG_RCVRY: recovery messages
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*/
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enum {
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UBIFS_MSG_GEN = 0x1,
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UBIFS_MSG_JNL = 0x2,
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UBIFS_MSG_MNT = 0x4,
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UBIFS_MSG_CMT = 0x8,
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UBIFS_MSG_FIND = 0x10,
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UBIFS_MSG_BUDG = 0x20,
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UBIFS_MSG_GC = 0x40,
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UBIFS_MSG_TNC = 0x80,
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UBIFS_MSG_LP = 0x100,
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UBIFS_MSG_IO = 0x200,
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UBIFS_MSG_LOG = 0x400,
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UBIFS_MSG_SCAN = 0x800,
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UBIFS_MSG_RCVRY = 0x1000,
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};
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/* Debugging message type flags for each default debug message level */
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#define UBIFS_MSG_LVL_0 0
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#define UBIFS_MSG_LVL_1 0x1
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#define UBIFS_MSG_LVL_2 0x7f
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#define UBIFS_MSG_LVL_3 0xffff
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/*
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* Debugging check flags (must match chk_names in debug.c).
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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 (must match tst_names in debug.c).
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*
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* UBIFS_TST_FORCE_IN_THE_GAPS: force the use of in-the-gaps method
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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_FORCE_IN_THE_GAPS = 0x2,
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UBIFS_TST_RCVRY = 0x4,
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};
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#if CONFIG_UBIFS_FS_DEBUG_MSG_LVL == 1
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#define UBIFS_MSG_FLAGS_DEFAULT UBIFS_MSG_LVL_1
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#elif CONFIG_UBIFS_FS_DEBUG_MSG_LVL == 2
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#define UBIFS_MSG_FLAGS_DEFAULT UBIFS_MSG_LVL_2
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#elif CONFIG_UBIFS_FS_DEBUG_MSG_LVL == 3
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#define UBIFS_MSG_FLAGS_DEFAULT UBIFS_MSG_LVL_3
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#else
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#define UBIFS_MSG_FLAGS_DEFAULT UBIFS_MSG_LVL_0
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#endif
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#ifdef CONFIG_UBIFS_FS_DEBUG_CHKS
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#define UBIFS_CHK_FLAGS_DEFAULT 0xffffffff
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#else
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#define UBIFS_CHK_FLAGS_DEFAULT 0
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#endif
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extern spinlock_t dbg_lock;
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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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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(const 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);
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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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/* 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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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(struct inode *inode);
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int dbg_check_dir_size(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_lprops(struct ubifs_info *c);
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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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/* Force the use of in-the-gaps method for testing */
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#define dbg_force_in_the_gaps_enabled \
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(ubifs_tst_flags & UBIFS_TST_FORCE_IN_THE_GAPS)
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int dbg_force_in_the_gaps(void);
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/* Failure mode for recovery testing */
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#define dbg_failure_mode (ubifs_tst_flags & UBIFS_TST_RCVRY)
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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 && (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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} 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 dbg_msg(fmt, ...) do { \
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if (0) \
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printk(KERN_DEBUG "UBIFS DBG (pid %d): %s: " fmt "\n", \
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|
current->pid, __func__, ##__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_gen(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_jnl(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_tnc(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_lp(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_find(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_mnt(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_io(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
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|
#define dbg_cmt(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_budg(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
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|
#define dbg_log(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
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|
#define dbg_gc(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
|
|
#define dbg_scan(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
|
|
#define dbg_rcvry(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
|
|
|
|
#define DBGKEY(key) ((char *)(key))
|
|
#define DBGKEY1(key) ((char *)(key))
|
|
|
|
#define ubifs_debugging_init(c) 0
|
|
#define ubifs_debugging_exit(c) ({})
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|
|
|
#define dbg_ntype(type) ""
|
|
#define dbg_cstate(cmt_state) ""
|
|
#define dbg_jhead(jhead) ""
|
|
#define dbg_get_key_dump(c, key) ({})
|
|
#define dbg_dump_inode(c, inode) ({})
|
|
#define dbg_dump_node(c, node) ({})
|
|
#define dbg_dump_lpt_node(c, node, lnum, offs) ({})
|
|
#define dbg_dump_budget_req(req) ({})
|
|
#define dbg_dump_lstats(lst) ({})
|
|
#define dbg_dump_budg(c) ({})
|
|
#define dbg_dump_lprop(c, lp) ({})
|
|
#define dbg_dump_lprops(c) ({})
|
|
#define dbg_dump_lpt_info(c) ({})
|
|
#define dbg_dump_leb(c, lnum) ({})
|
|
#define dbg_dump_znode(c, znode) ({})
|
|
#define dbg_dump_heap(c, heap, cat) ({})
|
|
#define dbg_dump_pnode(c, pnode, parent, iip) ({})
|
|
#define dbg_dump_tnc(c) ({})
|
|
#define dbg_dump_index(c) ({})
|
|
#define dbg_dump_lpt_lebs(c) ({})
|
|
|
|
#define dbg_walk_index(c, leaf_cb, znode_cb, priv) 0
|
|
#define dbg_old_index_check_init(c, zroot) 0
|
|
#define dbg_save_space_info(c) ({})
|
|
#define dbg_check_space_info(c) 0
|
|
#define dbg_check_old_index(c, zroot) 0
|
|
#define dbg_check_cats(c) 0
|
|
#define dbg_check_ltab(c) 0
|
|
#define dbg_chk_lpt_free_spc(c) 0
|
|
#define dbg_chk_lpt_sz(c, action, len) 0
|
|
#define dbg_check_synced_i_size(inode) 0
|
|
#define dbg_check_dir_size(c, dir) 0
|
|
#define dbg_check_tnc(c, x) 0
|
|
#define dbg_check_idx_size(c, idx_size) 0
|
|
#define dbg_check_filesystem(c) 0
|
|
#define dbg_check_heap(c, heap, cat, add_pos) ({})
|
|
#define dbg_check_lprops(c) 0
|
|
#define dbg_check_lpt_nodes(c, cnode, row, col) 0
|
|
#define dbg_check_inode_size(c, inode, size) 0
|
|
#define dbg_check_data_nodes_order(c, head) 0
|
|
#define dbg_check_nondata_nodes_order(c, head) 0
|
|
#define dbg_force_in_the_gaps_enabled 0
|
|
#define dbg_force_in_the_gaps() 0
|
|
#define dbg_failure_mode 0
|
|
|
|
#define dbg_debugfs_init() 0
|
|
#define dbg_debugfs_exit()
|
|
#define dbg_debugfs_init_fs(c) 0
|
|
#define dbg_debugfs_exit_fs(c) 0
|
|
|
|
#endif /* !CONFIG_UBIFS_FS_DEBUG */
|
|
#endif /* !__UBIFS_DEBUG_H__ */
|