[net-next-2.6.git] / fs / ubifs / debug.h

/*
 * This file is part of UBIFS.
 *
 * Copyright (C) 2006-2008 Nokia Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published by
 * the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 51
 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 *
 * Authors: Artem Bityutskiy (Битюцкий Артём)
 *          Adrian Hunter
 */

#ifndef __UBIFS_DEBUG_H__
#define __UBIFS_DEBUG_H__

#ifdef CONFIG_UBIFS_FS_DEBUG

/**
 * ubifs_debug_info - per-FS debugging information.
 * @buf: a buffer of LEB size, used for various purposes
 * @old_zroot: old index root - used by 'dbg_check_old_index()'
 * @old_zroot_level: old index root level - used by 'dbg_check_old_index()'
 * @old_zroot_sqnum: old index root sqnum - used by 'dbg_check_old_index()'
 * @failure_mode: failure mode for recovery testing
 * @fail_delay: 0=>don't delay, 1=>delay a time, 2=>delay a number of calls
 * @fail_timeout: time in jiffies when delay of failure mode expires
 * @fail_cnt: current number of calls to failure mode I/O functions
 * @fail_cnt_max: number of calls by which to delay failure mode
 * @chk_lpt_sz: used by LPT tree size checker
 * @chk_lpt_sz2: used by LPT tree size checker
 * @chk_lpt_wastage: used by LPT tree size checker
 * @chk_lpt_lebs: used by LPT tree size checker
 * @new_nhead_offs: used by LPT tree size checker
 * @new_ihead_lnum: used by debugging to check @c->ihead_lnum
 * @new_ihead_offs: used by debugging to check @c->ihead_offs
 *
 * @saved_lst: saved lprops statistics (used by 'dbg_save_space_info()')
 * @saved_free: saved free space (used by 'dbg_save_space_info()')
 *
 * dfs_dir_name: name of debugfs directory containing this file-system's files
 * dfs_dir: direntry object of the file-system debugfs directory
 * dfs_dump_lprops: "dump lprops" debugfs knob
 * dfs_dump_budg: "dump budgeting information" debugfs knob
 * dfs_dump_tnc: "dump TNC" debugfs knob
 */
struct ubifs_debug_info {
	void *buf;
	struct ubifs_zbranch old_zroot;
	int old_zroot_level;
	unsigned long long old_zroot_sqnum;
	int failure_mode;
	int fail_delay;
	unsigned long fail_timeout;
	unsigned int fail_cnt;
	unsigned int fail_cnt_max;
	long long chk_lpt_sz;
	long long chk_lpt_sz2;
	long long chk_lpt_wastage;
	int chk_lpt_lebs;
	int new_nhead_offs;
	int new_ihead_lnum;
	int new_ihead_offs;

	struct ubifs_lp_stats saved_lst;
	long long saved_free;

	char dfs_dir_name[100];
	struct dentry *dfs_dir;
	struct dentry *dfs_dump_lprops;
	struct dentry *dfs_dump_budg;
	struct dentry *dfs_dump_tnc;
};

#define ubifs_assert(expr) do {                                                \
	if (unlikely(!(expr))) {                                               \
		printk(KERN_CRIT "UBIFS assert failed in %s at %u (pid %d)\n", \
		       __func__, __LINE__, current->pid);                      \
		dbg_dump_stack();                                              \
	}                                                                      \
} while (0)

#define ubifs_assert_cmt_locked(c) do {                                        \
	if (unlikely(down_write_trylock(&(c)->commit_sem))) {                  \
		up_write(&(c)->commit_sem);                                    \
		printk(KERN_CRIT "commit lock is not locked!\n");              \
		ubifs_assert(0);                                               \
	}                                                                      \
} while (0)

#define dbg_dump_stack() do {                                                  \
	if (!dbg_failure_mode)                                                 \
		dump_stack();                                                  \
} while (0)

/* Generic debugging messages */
#define dbg_msg(fmt, ...) do {                                                 \
	spin_lock(&dbg_lock);                                                  \
	printk(KERN_DEBUG "UBIFS DBG (pid %d): %s: " fmt "\n", current->pid,   \
	       __func__, ##__VA_ARGS__);                                       \
	spin_unlock(&dbg_lock);                                                \
} while (0)

#define dbg_do_msg(typ, fmt, ...) do {                                         \
	if (ubifs_msg_flags & typ)                                             \
		dbg_msg(fmt, ##__VA_ARGS__);                                   \
} while (0)

#define dbg_err(fmt, ...) do {                                                 \
	spin_lock(&dbg_lock);                                                  \
	ubifs_err(fmt, ##__VA_ARGS__);                                         \
	spin_unlock(&dbg_lock);                                                \
} while (0)

const char *dbg_key_str0(const struct ubifs_info *c,
			 const union ubifs_key *key);
const char *dbg_key_str1(const struct ubifs_info *c,
			 const union ubifs_key *key);

/*
 * DBGKEY macros require @dbg_lock to be held, which it is in the dbg message
 * macros.
 */
#define DBGKEY(key) dbg_key_str0(c, (key))
#define DBGKEY1(key) dbg_key_str1(c, (key))

/* General messages */
#define dbg_gen(fmt, ...)   dbg_do_msg(UBIFS_MSG_GEN, fmt, ##__VA_ARGS__)

/* Additional journal messages */
#define dbg_jnl(fmt, ...)   dbg_do_msg(UBIFS_MSG_JNL, fmt, ##__VA_ARGS__)

/* Additional TNC messages */
#define dbg_tnc(fmt, ...)   dbg_do_msg(UBIFS_MSG_TNC, fmt, ##__VA_ARGS__)

/* Additional lprops messages */
#define dbg_lp(fmt, ...)    dbg_do_msg(UBIFS_MSG_LP, fmt, ##__VA_ARGS__)

/* Additional LEB find messages */
#define dbg_find(fmt, ...)  dbg_do_msg(UBIFS_MSG_FIND, fmt, ##__VA_ARGS__)

/* Additional mount messages */
#define dbg_mnt(fmt, ...)   dbg_do_msg(UBIFS_MSG_MNT, fmt, ##__VA_ARGS__)

/* Additional I/O messages */
#define dbg_io(fmt, ...)    dbg_do_msg(UBIFS_MSG_IO, fmt, ##__VA_ARGS__)

/* Additional commit messages */
#define dbg_cmt(fmt, ...)   dbg_do_msg(UBIFS_MSG_CMT, fmt, ##__VA_ARGS__)

/* Additional budgeting messages */
#define dbg_budg(fmt, ...)  dbg_do_msg(UBIFS_MSG_BUDG, fmt, ##__VA_ARGS__)

/* Additional log messages */
#define dbg_log(fmt, ...)   dbg_do_msg(UBIFS_MSG_LOG, fmt, ##__VA_ARGS__)

/* Additional gc messages */
#define dbg_gc(fmt, ...)    dbg_do_msg(UBIFS_MSG_GC, fmt, ##__VA_ARGS__)

/* Additional scan messages */
#define dbg_scan(fmt, ...)  dbg_do_msg(UBIFS_MSG_SCAN, fmt, ##__VA_ARGS__)

/* Additional recovery messages */
#define dbg_rcvry(fmt, ...) dbg_do_msg(UBIFS_MSG_RCVRY, fmt, ##__VA_ARGS__)

/*
 * Debugging message type flags (must match msg_type_names in debug.c).
 *
 * UBIFS_MSG_GEN: general messages
 * UBIFS_MSG_JNL: journal messages
 * UBIFS_MSG_MNT: mount messages
 * UBIFS_MSG_CMT: commit messages
 * UBIFS_MSG_FIND: LEB find messages
 * UBIFS_MSG_BUDG: budgeting messages
 * UBIFS_MSG_GC: garbage collection messages
 * UBIFS_MSG_TNC: TNC messages
 * UBIFS_MSG_LP: lprops messages
 * UBIFS_MSG_IO: I/O messages
 * UBIFS_MSG_LOG: log messages
 * UBIFS_MSG_SCAN: scan messages
 * UBIFS_MSG_RCVRY: recovery messages
 */
enum {
	UBIFS_MSG_GEN   = 0x1,
	UBIFS_MSG_JNL   = 0x2,
	UBIFS_MSG_MNT   = 0x4,
	UBIFS_MSG_CMT   = 0x8,
	UBIFS_MSG_FIND  = 0x10,
	UBIFS_MSG_BUDG  = 0x20,
	UBIFS_MSG_GC    = 0x40,
	UBIFS_MSG_TNC   = 0x80,
	UBIFS_MSG_LP    = 0x100,
	UBIFS_MSG_IO    = 0x200,
	UBIFS_MSG_LOG   = 0x400,
	UBIFS_MSG_SCAN  = 0x800,
	UBIFS_MSG_RCVRY = 0x1000,
};

/* Debugging message type flags for each default debug message level */
#define UBIFS_MSG_LVL_0 0
#define UBIFS_MSG_LVL_1 0x1
#define UBIFS_MSG_LVL_2 0x7f
#define UBIFS_MSG_LVL_3 0xffff

/*
 * Debugging check flags (must match chk_names in debug.c).
 *
 * UBIFS_CHK_GEN: general checks
 * UBIFS_CHK_TNC: check TNC
 * UBIFS_CHK_IDX_SZ: check index size
 * UBIFS_CHK_ORPH: check orphans
 * UBIFS_CHK_OLD_IDX: check the old index
 * UBIFS_CHK_LPROPS: check lprops
 * UBIFS_CHK_FS: check the file-system
 */
enum {
	UBIFS_CHK_GEN     = 0x1,
	UBIFS_CHK_TNC     = 0x2,
	UBIFS_CHK_IDX_SZ  = 0x4,
	UBIFS_CHK_ORPH    = 0x8,
	UBIFS_CHK_OLD_IDX = 0x10,
	UBIFS_CHK_LPROPS  = 0x20,
	UBIFS_CHK_FS      = 0x40,
};

/*
 * Special testing flags (must match tst_names in debug.c).
 *
 * UBIFS_TST_FORCE_IN_THE_GAPS: force the use of in-the-gaps method
 * UBIFS_TST_RCVRY: failure mode for recovery testing
 */
enum {
	UBIFS_TST_FORCE_IN_THE_GAPS = 0x2,
	UBIFS_TST_RCVRY             = 0x4,
};

#if CONFIG_UBIFS_FS_DEBUG_MSG_LVL == 1
#define UBIFS_MSG_FLAGS_DEFAULT UBIFS_MSG_LVL_1
#elif CONFIG_UBIFS_FS_DEBUG_MSG_LVL == 2
#define UBIFS_MSG_FLAGS_DEFAULT UBIFS_MSG_LVL_2
#elif CONFIG_UBIFS_FS_DEBUG_MSG_LVL == 3
#define UBIFS_MSG_FLAGS_DEFAULT UBIFS_MSG_LVL_3
#else
#define UBIFS_MSG_FLAGS_DEFAULT UBIFS_MSG_LVL_0
#endif

#ifdef CONFIG_UBIFS_FS_DEBUG_CHKS
#define UBIFS_CHK_FLAGS_DEFAULT 0xffffffff
#else
#define UBIFS_CHK_FLAGS_DEFAULT 0
#endif

extern spinlock_t dbg_lock;

extern unsigned int ubifs_msg_flags;
extern unsigned int ubifs_chk_flags;
extern unsigned int ubifs_tst_flags;

int ubifs_debugging_init(struct ubifs_info *c);
void ubifs_debugging_exit(struct ubifs_info *c);

/* Dump functions */
const char *dbg_ntype(int type);
const char *dbg_cstate(int cmt_state);
const char *dbg_jhead(int jhead);
const char *dbg_get_key_dump(const struct ubifs_info *c,
			     const union ubifs_key *key);
void dbg_dump_inode(const struct ubifs_info *c, const struct inode *inode);
void dbg_dump_node(const struct ubifs_info *c, const void *node);
void dbg_dump_lpt_node(const struct ubifs_info *c, void *node, int lnum,
		       int offs);
void dbg_dump_budget_req(const struct ubifs_budget_req *req);
void dbg_dump_lstats(const struct ubifs_lp_stats *lst);
void dbg_dump_budg(struct ubifs_info *c);
void dbg_dump_lprop(const struct ubifs_info *c, const struct ubifs_lprops *lp);
void dbg_dump_lprops(struct ubifs_info *c);
void dbg_dump_lpt_info(struct ubifs_info *c);
void dbg_dump_leb(const struct ubifs_info *c, int lnum);
void dbg_dump_znode(const struct ubifs_info *c,
		    const struct ubifs_znode *znode);
void dbg_dump_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat);
void dbg_dump_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode,
		    struct ubifs_nnode *parent, int iip);
void dbg_dump_tnc(struct ubifs_info *c);
void dbg_dump_index(struct ubifs_info *c);
void dbg_dump_lpt_lebs(const struct ubifs_info *c);

/* Checking helper functions */
typedef int (*dbg_leaf_callback)(struct ubifs_info *c,
				 struct ubifs_zbranch *zbr, void *priv);
typedef int (*dbg_znode_callback)(struct ubifs_info *c,
				  struct ubifs_znode *znode, void *priv);
int dbg_walk_index(struct ubifs_info *c, dbg_leaf_callback leaf_cb,
		   dbg_znode_callback znode_cb, void *priv);

/* Checking functions */
void dbg_save_space_info(struct ubifs_info *c);
int dbg_check_space_info(struct ubifs_info *c);
int dbg_check_lprops(struct ubifs_info *c);
int dbg_old_index_check_init(struct ubifs_info *c, struct ubifs_zbranch *zroot);
int dbg_check_old_index(struct ubifs_info *c, struct ubifs_zbranch *zroot);
int dbg_check_cats(struct ubifs_info *c);
int dbg_check_ltab(struct ubifs_info *c);
int dbg_chk_lpt_free_spc(struct ubifs_info *c);
int dbg_chk_lpt_sz(struct ubifs_info *c, int action, int len);
int dbg_check_synced_i_size(struct inode *inode);
int dbg_check_dir_size(struct ubifs_info *c, const struct inode *dir);
int dbg_check_tnc(struct ubifs_info *c, int extra);
int dbg_check_idx_size(struct ubifs_info *c, long long idx_size);
int dbg_check_filesystem(struct ubifs_info *c);
void dbg_check_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat,
		    int add_pos);
int dbg_check_lprops(struct ubifs_info *c);
int dbg_check_lpt_nodes(struct ubifs_info *c, struct ubifs_cnode *cnode,
			int row, int col);
int dbg_check_inode_size(struct ubifs_info *c, const struct inode *inode,
			 loff_t size);
int dbg_check_data_nodes_order(struct ubifs_info *c, struct list_head *head);
int dbg_check_nondata_nodes_order(struct ubifs_info *c, struct list_head *head);

/* Force the use of in-the-gaps method for testing */

#define dbg_force_in_the_gaps_enabled \
	(ubifs_tst_flags & UBIFS_TST_FORCE_IN_THE_GAPS)

int dbg_force_in_the_gaps(void);

/* Failure mode for recovery testing */

#define dbg_failure_mode (ubifs_tst_flags & UBIFS_TST_RCVRY)

#ifndef UBIFS_DBG_PRESERVE_UBI

#define ubi_leb_read   dbg_leb_read
#define ubi_leb_write  dbg_leb_write
#define ubi_leb_change dbg_leb_change
#define ubi_leb_erase  dbg_leb_erase
#define ubi_leb_unmap  dbg_leb_unmap
#define ubi_is_mapped  dbg_is_mapped
#define ubi_leb_map    dbg_leb_map

#endif

int dbg_leb_read(struct ubi_volume_desc *desc, int lnum, char *buf, int offset,
		 int len, int check);
int dbg_leb_write(struct ubi_volume_desc *desc, int lnum, const void *buf,
		  int offset, int len, int dtype);
int dbg_leb_change(struct ubi_volume_desc *desc, int lnum, const void *buf,
		   int len, int dtype);
int dbg_leb_erase(struct ubi_volume_desc *desc, int lnum);
int dbg_leb_unmap(struct ubi_volume_desc *desc, int lnum);
int dbg_is_mapped(struct ubi_volume_desc *desc, int lnum);
int dbg_leb_map(struct ubi_volume_desc *desc, int lnum, int dtype);

static inline int dbg_read(struct ubi_volume_desc *desc, int lnum, char *buf,
			   int offset, int len)
{
	return dbg_leb_read(desc, lnum, buf, offset, len, 0);
}

static inline int dbg_write(struct ubi_volume_desc *desc, int lnum,
			    const void *buf, int offset, int len)
{
	return dbg_leb_write(desc, lnum, buf, offset, len, UBI_UNKNOWN);
}

static inline int dbg_change(struct ubi_volume_desc *desc, int lnum,
				    const void *buf, int len)
{
	return dbg_leb_change(desc, lnum, buf, len, UBI_UNKNOWN);
}

/* Debugfs-related stuff */
int dbg_debugfs_init(void);
void dbg_debugfs_exit(void);
int dbg_debugfs_init_fs(struct ubifs_info *c);
void dbg_debugfs_exit_fs(struct ubifs_info *c);

#else /* !CONFIG_UBIFS_FS_DEBUG */

/* Use "if (0)" to make compiler check arguments even if debugging is off */
#define ubifs_assert(expr)  do {                                               \
	if (0 && (expr))                                                       \
		printk(KERN_CRIT "UBIFS assert failed in %s at %u (pid %d)\n", \
		       __func__, __LINE__, current->pid);                      \
} while (0)

#define dbg_err(fmt, ...)   do {                                               \
	if (0)                                                                 \
		ubifs_err(fmt, ##__VA_ARGS__);                                 \
} while (0)

#define dbg_msg(fmt, ...) do {                                                 \
	if (0)                                                                 \
		printk(KERN_DEBUG "UBIFS DBG (pid %d): %s: " fmt "\n",         \
		       current->pid, __func__, ##__VA_ARGS__);                 \
} while (0)

#define dbg_dump_stack()
#define ubifs_assert_cmt_locked(c)

#define dbg_gen(fmt, ...)   dbg_msg(fmt, ##__VA_ARGS__)
#define dbg_jnl(fmt, ...)   dbg_msg(fmt, ##__VA_ARGS__)
#define dbg_tnc(fmt, ...)   dbg_msg(fmt, ##__VA_ARGS__)
#define dbg_lp(fmt, ...)    dbg_msg(fmt, ##__VA_ARGS__)
#define dbg_find(fmt, ...)  dbg_msg(fmt, ##__VA_ARGS__)
#define dbg_mnt(fmt, ...)   dbg_msg(fmt, ##__VA_ARGS__)
#define dbg_io(fmt, ...)    dbg_msg(fmt, ##__VA_ARGS__)
#define dbg_cmt(fmt, ...)   dbg_msg(fmt, ##__VA_ARGS__)
#define dbg_budg(fmt, ...)  dbg_msg(fmt, ##__VA_ARGS__)
#define dbg_log(fmt, ...)   dbg_msg(fmt, ##__VA_ARGS__)
#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)                ({})

#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__ */
Commit	Line	Data
1e51764a AB	1	/*
	2	* This file is part of UBIFS.
	3	*
	4	* Copyright (C) 2006-2008 Nokia Corporation.
	5	*
	6	* This program is free software; you can redistribute it and/or modify it
	7	* under the terms of the GNU General Public License version 2 as published by
	8	* the Free Software Foundation.
	9	*
	10	* This program is distributed in the hope that it will be useful, but WITHOUT
	11	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	12	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	13	* more details.
	14	*
	15	* You should have received a copy of the GNU General Public License along with
	16	* this program; if not, write to the Free Software Foundation, Inc., 51
	17	* Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	18	*
	19	* Authors: Artem Bityutskiy (Битюцкий Артём)
	20	* Adrian Hunter
	21	*/
	22
	23	#ifndef __UBIFS_DEBUG_H__
	24	#define __UBIFS_DEBUG_H__
	25
	26	#ifdef CONFIG_UBIFS_FS_DEBUG
	27
17c2f9f8 AB	28	/**
	29	* ubifs_debug_info - per-FS debugging information.
	30	* @buf: a buffer of LEB size, used for various purposes
	31	* @old_zroot: old index root - used by 'dbg_check_old_index()'
	32	* @old_zroot_level: old index root level - used by 'dbg_check_old_index()'
	33	* @old_zroot_sqnum: old index root sqnum - used by 'dbg_check_old_index()'
	34	* @failure_mode: failure mode for recovery testing
	35	* @fail_delay: 0=>don't delay, 1=>delay a time, 2=>delay a number of calls
	36	* @fail_timeout: time in jiffies when delay of failure mode expires
	37	* @fail_cnt: current number of calls to failure mode I/O functions
	38	* @fail_cnt_max: number of calls by which to delay failure mode
	39	* @chk_lpt_sz: used by LPT tree size checker
	40	* @chk_lpt_sz2: used by LPT tree size checker
	41	* @chk_lpt_wastage: used by LPT tree size checker
	42	* @chk_lpt_lebs: used by LPT tree size checker
	43	* @new_nhead_offs: used by LPT tree size checker
84abf972 AB	44	* @new_ihead_lnum: used by debugging to check @c->ihead_lnum
84abf972 AB	45	* @new_ihead_offs: used by debugging to check @c->ihead_offs
552ff317	46	*
84abf972 AB	47	* @saved_lst: saved lprops statistics (used by 'dbg_save_space_info()')
	48	* @saved_free: saved free space (used by 'dbg_save_space_info()')
	49	*
	50	* dfs_dir_name: name of debugfs directory containing this file-system's files
	51	* dfs_dir: direntry object of the file-system debugfs directory
	52	* dfs_dump_lprops: "dump lprops" debugfs knob
	53	* dfs_dump_budg: "dump budgeting information" debugfs knob
	54	* dfs_dump_tnc: "dump TNC" debugfs knob
17c2f9f8 AB	55	*/
	56	struct ubifs_debug_info {
	57	void *buf;
	58	struct ubifs_zbranch old_zroot;
	59	int old_zroot_level;
	60	unsigned long long old_zroot_sqnum;
	61	int failure_mode;
	62	int fail_delay;
	63	unsigned long fail_timeout;
	64	unsigned int fail_cnt;
	65	unsigned int fail_cnt_max;
	66	long long chk_lpt_sz;
	67	long long chk_lpt_sz2;
	68	long long chk_lpt_wastage;
	69	int chk_lpt_lebs;
	70	int new_nhead_offs;
	71	int new_ihead_lnum;
	72	int new_ihead_offs;
552ff317	73
84abf972 AB	74	struct ubifs_lp_stats saved_lst;
	75	long long saved_free;
	76
	77	char dfs_dir_name[100];
	78	struct dentry *dfs_dir;
	79	struct dentry *dfs_dump_lprops;
	80	struct dentry *dfs_dump_budg;
	81	struct dentry *dfs_dump_tnc;
17c2f9f8	82	};
1e51764a	83
840dc6b8	84	#define ubifs_assert(expr) do { \
1e51764a AB	85	if (unlikely(!(expr))) { \
	86	printk(KERN_CRIT "UBIFS assert failed in %s at %u (pid %d)\n", \
	87	__func__, __LINE__, current->pid); \
	88	dbg_dump_stack(); \
	89	} \
	90	} while (0)
	91
	92	#define ubifs_assert_cmt_locked(c) do { \
	93	if (unlikely(down_write_trylock(&(c)->commit_sem))) { \
	94	up_write(&(c)->commit_sem); \
	95	printk(KERN_CRIT "commit lock is not locked!\n"); \
	96	ubifs_assert(0); \
	97	} \
	98	} while (0)
	99
	100	#define dbg_dump_stack() do { \
	101	if (!dbg_failure_mode) \
	102	dump_stack(); \
	103	} while (0)
	104
	105	/* Generic debugging messages */
	106	#define dbg_msg(fmt, ...) do { \
	107	spin_lock(&dbg_lock); \
	108	printk(KERN_DEBUG "UBIFS DBG (pid %d): %s: " fmt "\n", current->pid, \
	109	__func__, ##__VA_ARGS__); \
	110	spin_unlock(&dbg_lock); \
	111	} while (0)
	112
	113	#define dbg_do_msg(typ, fmt, ...) do { \
	114	if (ubifs_msg_flags & typ) \
	115	dbg_msg(fmt, ##__VA_ARGS__); \
	116	} while (0)
	117
	118	#define dbg_err(fmt, ...) do { \
	119	spin_lock(&dbg_lock); \
	120	ubifs_err(fmt, ##__VA_ARGS__); \
	121	spin_unlock(&dbg_lock); \
	122	} while (0)
	123
	124	const char dbg_key_str0(const struct ubifs_info c,
	125	const union ubifs_key *key);
	126	const char dbg_key_str1(const struct ubifs_info c,
	127	const union ubifs_key *key);
	128
	129	/*
840dc6b8	130	* DBGKEY macros require @dbg_lock to be held, which it is in the dbg message
1e51764a AB	131	* macros.
	132	*/
	133	#define DBGKEY(key) dbg_key_str0(c, (key))
	134	#define DBGKEY1(key) dbg_key_str1(c, (key))
	135
	136	/* General messages */
840dc6b8	137	#define dbg_gen(fmt, ...) dbg_do_msg(UBIFS_MSG_GEN, fmt, ##__VA_ARGS__)
1e51764a AB	138
1e51764a AB	139	/* Additional journal messages */
840dc6b8	140	#define dbg_jnl(fmt, ...) dbg_do_msg(UBIFS_MSG_JNL, fmt, ##__VA_ARGS__)
1e51764a AB	141
1e51764a AB	142	/* Additional TNC messages */
840dc6b8	143	#define dbg_tnc(fmt, ...) dbg_do_msg(UBIFS_MSG_TNC, fmt, ##__VA_ARGS__)
1e51764a AB	144
1e51764a AB	145	/* Additional lprops messages */
840dc6b8	146	#define dbg_lp(fmt, ...) dbg_do_msg(UBIFS_MSG_LP, fmt, ##__VA_ARGS__)
1e51764a AB	147
1e51764a AB	148	/* Additional LEB find messages */
840dc6b8	149	#define dbg_find(fmt, ...) dbg_do_msg(UBIFS_MSG_FIND, fmt, ##__VA_ARGS__)
1e51764a AB	150
1e51764a AB	151	/* Additional mount messages */
840dc6b8	152	#define dbg_mnt(fmt, ...) dbg_do_msg(UBIFS_MSG_MNT, fmt, ##__VA_ARGS__)
1e51764a AB	153
1e51764a AB	154	/* Additional I/O messages */
840dc6b8	155	#define dbg_io(fmt, ...) dbg_do_msg(UBIFS_MSG_IO, fmt, ##__VA_ARGS__)
1e51764a AB	156
1e51764a AB	157	/* Additional commit messages */
840dc6b8	158	#define dbg_cmt(fmt, ...) dbg_do_msg(UBIFS_MSG_CMT, fmt, ##__VA_ARGS__)
1e51764a AB	159
1e51764a AB	160	/* Additional budgeting messages */
840dc6b8	161	#define dbg_budg(fmt, ...) dbg_do_msg(UBIFS_MSG_BUDG, fmt, ##__VA_ARGS__)
1e51764a AB	162
1e51764a AB	163	/* Additional log messages */
840dc6b8	164	#define dbg_log(fmt, ...) dbg_do_msg(UBIFS_MSG_LOG, fmt, ##__VA_ARGS__)
1e51764a AB	165
1e51764a AB	166	/* Additional gc messages */
840dc6b8	167	#define dbg_gc(fmt, ...) dbg_do_msg(UBIFS_MSG_GC, fmt, ##__VA_ARGS__)
1e51764a AB	168
1e51764a AB	169	/* Additional scan messages */
840dc6b8	170	#define dbg_scan(fmt, ...) dbg_do_msg(UBIFS_MSG_SCAN, fmt, ##__VA_ARGS__)
1e51764a AB	171
1e51764a AB	172	/* Additional recovery messages */
840dc6b8	173	#define dbg_rcvry(fmt, ...) dbg_do_msg(UBIFS_MSG_RCVRY, fmt, ##__VA_ARGS__)
1e51764a AB	174
	175	/*
	176	* Debugging message type flags (must match msg_type_names in debug.c).
	177	*
	178	* UBIFS_MSG_GEN: general messages
	179	* UBIFS_MSG_JNL: journal messages
	180	* UBIFS_MSG_MNT: mount messages
	181	* UBIFS_MSG_CMT: commit messages
	182	* UBIFS_MSG_FIND: LEB find messages
	183	* UBIFS_MSG_BUDG: budgeting messages
	184	* UBIFS_MSG_GC: garbage collection messages
	185	* UBIFS_MSG_TNC: TNC messages
	186	* UBIFS_MSG_LP: lprops messages
	187	* UBIFS_MSG_IO: I/O messages
	188	* UBIFS_MSG_LOG: log messages
	189	* UBIFS_MSG_SCAN: scan messages
	190	* UBIFS_MSG_RCVRY: recovery messages
	191	*/
	192	enum {
	193	UBIFS_MSG_GEN = 0x1,
	194	UBIFS_MSG_JNL = 0x2,
	195	UBIFS_MSG_MNT = 0x4,
	196	UBIFS_MSG_CMT = 0x8,
	197	UBIFS_MSG_FIND = 0x10,
	198	UBIFS_MSG_BUDG = 0x20,
	199	UBIFS_MSG_GC = 0x40,
	200	UBIFS_MSG_TNC = 0x80,
	201	UBIFS_MSG_LP = 0x100,
	202	UBIFS_MSG_IO = 0x200,
	203	UBIFS_MSG_LOG = 0x400,
	204	UBIFS_MSG_SCAN = 0x800,
	205	UBIFS_MSG_RCVRY = 0x1000,
	206	};
	207
	208	/* Debugging message type flags for each default debug message level */
	209	#define UBIFS_MSG_LVL_0 0
	210	#define UBIFS_MSG_LVL_1 0x1
	211	#define UBIFS_MSG_LVL_2 0x7f
	212	#define UBIFS_MSG_LVL_3 0xffff
	213
	214	/*
	215	* Debugging check flags (must match chk_names in debug.c).
	216	*
	217	* UBIFS_CHK_GEN: general checks
	218	* UBIFS_CHK_TNC: check TNC
	219	* UBIFS_CHK_IDX_SZ: check index size
	220	* UBIFS_CHK_ORPH: check orphans
	221	* UBIFS_CHK_OLD_IDX: check the old index
	222	* UBIFS_CHK_LPROPS: check lprops
	223	* UBIFS_CHK_FS: check the file-system
	224	*/
	225	enum {
	226	UBIFS_CHK_GEN = 0x1,
	227	UBIFS_CHK_TNC = 0x2,
	228	UBIFS_CHK_IDX_SZ = 0x4,
	229	UBIFS_CHK_ORPH = 0x8,
	230	UBIFS_CHK_OLD_IDX = 0x10,
	231	UBIFS_CHK_LPROPS = 0x20,
	232	UBIFS_CHK_FS = 0x40,
	233	};
	234
	235	/*
	236	* Special testing flags (must match tst_names in debug.c).
	237	*
238	* UBIFS_TST_FORCE_IN_THE_GAPS: force the use of in-the-gaps method
239	* UBIFS_TST_RCVRY: failure mode for recovery testing
240	*/
241	enum {
242	UBIFS_TST_FORCE_IN_THE_GAPS = 0x2,
243	UBIFS_TST_RCVRY = 0x4,
244	};
245
246	#if CONFIG_UBIFS_FS_DEBUG_MSG_LVL == 1
247	#define UBIFS_MSG_FLAGS_DEFAULT UBIFS_MSG_LVL_1
248	#elif CONFIG_UBIFS_FS_DEBUG_MSG_LVL == 2
249	#define UBIFS_MSG_FLAGS_DEFAULT UBIFS_MSG_LVL_2
250	#elif CONFIG_UBIFS_FS_DEBUG_MSG_LVL == 3
251	#define UBIFS_MSG_FLAGS_DEFAULT UBIFS_MSG_LVL_3
252	#else
253	#define UBIFS_MSG_FLAGS_DEFAULT UBIFS_MSG_LVL_0
254	#endif
255
256	#ifdef CONFIG_UBIFS_FS_DEBUG_CHKS
257	#define UBIFS_CHK_FLAGS_DEFAULT 0xffffffff
258	#else
259	#define UBIFS_CHK_FLAGS_DEFAULT 0
260	#endif
261
262	extern spinlock_t dbg_lock;
263
264	extern unsigned int ubifs_msg_flags;
265	extern unsigned int ubifs_chk_flags;
266	extern unsigned int ubifs_tst_flags;
267
17c2f9f8 AB	268	int ubifs_debugging_init(struct ubifs_info *c);
	269	void ubifs_debugging_exit(struct ubifs_info *c);
	270
1e51764a	271	/* Dump functions */
1e51764a AB	272	const char *dbg_ntype(int type);
1e51764a AB	273	const char *dbg_cstate(int cmt_state);
77a7ae58	274	const char *dbg_jhead(int jhead);
1e51764a AB	275	const char dbg_get_key_dump(const struct ubifs_info c,
	276	const union ubifs_key *key);
	277	void dbg_dump_inode(const struct ubifs_info c, const struct inode inode);
	278	void dbg_dump_node(const struct ubifs_info c, const void node);
2ba5f7ae AB	279	void dbg_dump_lpt_node(const struct ubifs_info c, void node, int lnum,
2ba5f7ae AB	280	int offs);
1e51764a AB	281	void dbg_dump_budget_req(const struct ubifs_budget_req *req);
	282	void dbg_dump_lstats(const struct ubifs_lp_stats *lst);
	283	void dbg_dump_budg(struct ubifs_info *c);
	284	void dbg_dump_lprop(const struct ubifs_info c, const struct ubifs_lprops lp);
	285	void dbg_dump_lprops(struct ubifs_info *c);
73944a6d	286	void dbg_dump_lpt_info(struct ubifs_info *c);
1e51764a AB	287	void dbg_dump_leb(const struct ubifs_info *c, int lnum);
	288	void dbg_dump_znode(const struct ubifs_info *c,
	289	const struct ubifs_znode *znode);
	290	void dbg_dump_heap(struct ubifs_info c, struct ubifs_lpt_heap heap, int cat);
	291	void dbg_dump_pnode(struct ubifs_info c, struct ubifs_pnode pnode,
	292	struct ubifs_nnode *parent, int iip);
	293	void dbg_dump_tnc(struct ubifs_info *c);
	294	void dbg_dump_index(struct ubifs_info *c);
2ba5f7ae	295	void dbg_dump_lpt_lebs(const struct ubifs_info *c);
1e51764a AB	296
1e51764a AB	297	/* Checking helper functions */
1e51764a AB	298	typedef int (dbg_leaf_callback)(struct ubifs_info c,
	299	struct ubifs_zbranch zbr, void priv);
	300	typedef int (dbg_znode_callback)(struct ubifs_info c,
	301	struct ubifs_znode znode, void priv);
1e51764a AB	302	int dbg_walk_index(struct ubifs_info *c, dbg_leaf_callback leaf_cb,
	303	dbg_znode_callback znode_cb, void *priv);
	304
	305	/* Checking functions */
84abf972 AB	306	void dbg_save_space_info(struct ubifs_info *c);
84abf972 AB	307	int dbg_check_space_info(struct ubifs_info *c);
1e51764a	308	int dbg_check_lprops(struct ubifs_info *c);
1e51764a AB	309	int dbg_old_index_check_init(struct ubifs_info c, struct ubifs_zbranch zroot);
1e51764a AB	310	int dbg_check_old_index(struct ubifs_info c, struct ubifs_zbranch zroot);
1e51764a	311	int dbg_check_cats(struct ubifs_info *c);
1e51764a	312	int dbg_check_ltab(struct ubifs_info *c);
73944a6d AH	313	int dbg_chk_lpt_free_spc(struct ubifs_info *c);
73944a6d AH	314	int dbg_chk_lpt_sz(struct ubifs_info *c, int action, int len);
1e51764a	315	int dbg_check_synced_i_size(struct inode *inode);
1e51764a	316	int dbg_check_dir_size(struct ubifs_info c, const struct inode dir);
1e51764a	317	int dbg_check_tnc(struct ubifs_info *c, int extra);
1e51764a	318	int dbg_check_idx_size(struct ubifs_info *c, long long idx_size);
1e51764a	319	int dbg_check_filesystem(struct ubifs_info *c);
1e51764a AB	320	void dbg_check_heap(struct ubifs_info c, struct ubifs_lpt_heap heap, int cat,
1e51764a AB	321	int add_pos);
1e51764a AB	322	int dbg_check_lprops(struct ubifs_info *c);
	323	int dbg_check_lpt_nodes(struct ubifs_info c, struct ubifs_cnode cnode,
	324	int row, int col);
e3c3efc2 AB	325	int dbg_check_inode_size(struct ubifs_info c, const struct inode inode,
e3c3efc2 AB	326	loff_t size);
3bb66b47 AB	327	int dbg_check_data_nodes_order(struct ubifs_info c, struct list_head head);
3bb66b47 AB	328	int dbg_check_nondata_nodes_order(struct ubifs_info c, struct list_head head);
1e51764a AB	329
	330	/* Force the use of in-the-gaps method for testing */
	331
	332	#define dbg_force_in_the_gaps_enabled \
	333	(ubifs_tst_flags & UBIFS_TST_FORCE_IN_THE_GAPS)
	334
	335	int dbg_force_in_the_gaps(void);
	336
	337	/* Failure mode for recovery testing */
	338
	339	#define dbg_failure_mode (ubifs_tst_flags & UBIFS_TST_RCVRY)
	340
1e51764a AB	341	#ifndef UBIFS_DBG_PRESERVE_UBI
	342
	343	#define ubi_leb_read dbg_leb_read
	344	#define ubi_leb_write dbg_leb_write
	345	#define ubi_leb_change dbg_leb_change
	346	#define ubi_leb_erase dbg_leb_erase
	347	#define ubi_leb_unmap dbg_leb_unmap
	348	#define ubi_is_mapped dbg_is_mapped
	349	#define ubi_leb_map dbg_leb_map
	350
	351	#endif
	352
	353	int dbg_leb_read(struct ubi_volume_desc desc, int lnum, char buf, int offset,
	354	int len, int check);
	355	int dbg_leb_write(struct ubi_volume_desc desc, int lnum, const void buf,
	356	int offset, int len, int dtype);
	357	int dbg_leb_change(struct ubi_volume_desc desc, int lnum, const void buf,
	358	int len, int dtype);
	359	int dbg_leb_erase(struct ubi_volume_desc *desc, int lnum);
	360	int dbg_leb_unmap(struct ubi_volume_desc *desc, int lnum);
	361	int dbg_is_mapped(struct ubi_volume_desc *desc, int lnum);
	362	int dbg_leb_map(struct ubi_volume_desc *desc, int lnum, int dtype);
	363
	364	static inline int dbg_read(struct ubi_volume_desc desc, int lnum, char buf,
	365	int offset, int len)
	366	{
	367	return dbg_leb_read(desc, lnum, buf, offset, len, 0);
	368	}
	369
	370	static inline int dbg_write(struct ubi_volume_desc *desc, int lnum,
	371	const void *buf, int offset, int len)
	372	{
	373	return dbg_leb_write(desc, lnum, buf, offset, len, UBI_UNKNOWN);
	374	}
	375
	376	static inline int dbg_change(struct ubi_volume_desc *desc, int lnum,
	377	const void *buf, int len)
	378	{
	379	return dbg_leb_change(desc, lnum, buf, len, UBI_UNKNOWN);
	380	}
	381
552ff317 AB	382	/* Debugfs-related stuff */
	383	int dbg_debugfs_init(void);
	384	void dbg_debugfs_exit(void);
	385	int dbg_debugfs_init_fs(struct ubifs_info *c);
	386	void dbg_debugfs_exit_fs(struct ubifs_info *c);
	387
1e51764a AB	388	#else /* !CONFIG_UBIFS_FS_DEBUG */
1e51764a AB	389
840dc6b8 AB	390	/* Use "if (0)" to make compiler check arguments even if debugging is off */
	391	#define ubifs_assert(expr) do { \
	392	if (0 && (expr)) \
	393	printk(KERN_CRIT "UBIFS assert failed in %s at %u (pid %d)\n", \
	394	__func__, __LINE__, current->pid); \
	395	} while (0)
	396
	397	#define dbg_err(fmt, ...) do { \
	398	if (0) \
	399	ubifs_err(fmt, ##__VA_ARGS__); \
	400	} while (0)
	401
	402	#define dbg_msg(fmt, ...) do { \
	403	if (0) \
	404	printk(KERN_DEBUG "UBIFS DBG (pid %d): %s: " fmt "\n", \
	405	current->pid, __func__, ##__VA_ARGS__); \
	406	} while (0)
	407
1e51764a	408	#define dbg_dump_stack()
840dc6b8	409	#define ubifs_assert_cmt_locked(c)
1e51764a	410
840dc6b8 AB	411	#define dbg_gen(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
	412	#define dbg_jnl(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
	413	#define dbg_tnc(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
	414	#define dbg_lp(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
	415	#define dbg_find(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
	416	#define dbg_mnt(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
	417	#define dbg_io(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
	418	#define dbg_cmt(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
	419	#define dbg_budg(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
	420	#define dbg_log(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
	421	#define dbg_gc(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
	422	#define dbg_scan(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
	423	#define dbg_rcvry(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
	424
	425	#define DBGKEY(key) ((char *)(key))
	426	#define DBGKEY1(key) ((char *)(key))
	427
2ba5f7ae AB	428	#define ubifs_debugging_init(c) 0
	429	#define ubifs_debugging_exit(c) ({})
	430
	431	#define dbg_ntype(type) ""
	432	#define dbg_cstate(cmt_state) ""
77a7ae58	433	#define dbg_jhead(jhead) ""
2ba5f7ae AB	434	#define dbg_get_key_dump(c, key) ({})
	435	#define dbg_dump_inode(c, inode) ({})
	436	#define dbg_dump_node(c, node) ({})
	437	#define dbg_dump_lpt_node(c, node, lnum, offs) ({})
	438	#define dbg_dump_budget_req(req) ({})
	439	#define dbg_dump_lstats(lst) ({})
	440	#define dbg_dump_budg(c) ({})
	441	#define dbg_dump_lprop(c, lp) ({})
	442	#define dbg_dump_lprops(c) ({})
	443	#define dbg_dump_lpt_info(c) ({})
	444	#define dbg_dump_leb(c, lnum) ({})
	445	#define dbg_dump_znode(c, znode) ({})
	446	#define dbg_dump_heap(c, heap, cat) ({})
	447	#define dbg_dump_pnode(c, pnode, parent, iip) ({})
	448	#define dbg_dump_tnc(c) ({})
	449	#define dbg_dump_index(c) ({})
	450	#define dbg_dump_lpt_lebs(c) ({})
1e51764a	451
840dc6b8	452	#define dbg_walk_index(c, leaf_cb, znode_cb, priv) 0
1e51764a	453	#define dbg_old_index_check_init(c, zroot) 0
84abf972 AB	454	#define dbg_save_space_info(c) ({})
84abf972 AB	455	#define dbg_check_space_info(c) 0
1e51764a	456	#define dbg_check_old_index(c, zroot) 0
1e51764a	457	#define dbg_check_cats(c) 0
1e51764a	458	#define dbg_check_ltab(c) 0
73944a6d AH	459	#define dbg_chk_lpt_free_spc(c) 0
73944a6d AH	460	#define dbg_chk_lpt_sz(c, action, len) 0
1e51764a	461	#define dbg_check_synced_i_size(inode) 0
1e51764a	462	#define dbg_check_dir_size(c, dir) 0
1e51764a	463	#define dbg_check_tnc(c, x) 0
1e51764a	464	#define dbg_check_idx_size(c, idx_size) 0
1e51764a	465	#define dbg_check_filesystem(c) 0
1e51764a	466	#define dbg_check_heap(c, heap, cat, add_pos) ({})
1e51764a AB	467	#define dbg_check_lprops(c) 0
1e51764a AB	468	#define dbg_check_lpt_nodes(c, cnode, row, col) 0
e3c3efc2	469	#define dbg_check_inode_size(c, inode, size) 0
3bb66b47 AB	470	#define dbg_check_data_nodes_order(c, head) 0
3bb66b47 AB	471	#define dbg_check_nondata_nodes_order(c, head) 0
1e51764a AB	472	#define dbg_force_in_the_gaps_enabled 0
1e51764a AB	473	#define dbg_force_in_the_gaps() 0
1e51764a	474	#define dbg_failure_mode 0
1e51764a	475
552ff317 AB	476	#define dbg_debugfs_init() 0
	477	#define dbg_debugfs_exit()
	478	#define dbg_debugfs_init_fs(c) 0
	479	#define dbg_debugfs_exit_fs(c) 0
1e51764a	480
552ff317	481	#endif /* !CONFIG_UBIFS_FS_DEBUG */
1e51764a	482	#endif /* !__UBIFS_DEBUG_H__ */