/* * 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__ /* 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); #ifdef CONFIG_UBIFS_FS_DEBUG #include <linux/random.h> /** * ubifs_debug_info - per-FS debugging information. * @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_bi: saved budgeting information * @saved_free: saved amount of free space * @saved_idx_gc_cnt: saved value of @c->idx_gc_cnt * * @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 { 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; struct ubifs_budg_info saved_bi; long long saved_free; int saved_idx_gc_cnt; 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() dump_stack() #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)) #define ubifs_dbg_msg(type, fmt, ...) do { \ spin_lock(&dbg_lock); \ pr_debug("UBIFS DBG " type ": " fmt "\n", ##__VA_ARGS__); \ spin_unlock(&dbg_lock); \ } while (0) /* Just a debugging messages not related to any specific UBIFS subsystem */ #define dbg_msg(fmt, ...) ubifs_dbg_msg("msg", fmt, ##__VA_ARGS__) /* General messages */ #define dbg_gen(fmt, ...) ubifs_dbg_msg("gen", fmt, ##__VA_ARGS__) /* Additional journal messages */ #define dbg_jnl(fmt, ...) ubifs_dbg_msg("jnl", fmt, ##__VA_ARGS__) /* Additional TNC messages */ #define dbg_tnc(fmt, ...) ubifs_dbg_msg("tnc", fmt, ##__VA_ARGS__) /* Additional lprops messages */ #define dbg_lp(fmt, ...) ubifs_dbg_msg("lp", fmt, ##__VA_ARGS__) /* Additional LEB find messages */ #define dbg_find(fmt, ...) ubifs_dbg_msg("find", fmt, ##__VA_ARGS__) /* Additional mount messages */ #define dbg_mnt(fmt, ...) ubifs_dbg_msg("mnt", fmt, ##__VA_ARGS__) /* Additional I/O messages */ #define dbg_io(fmt, ...) ubifs_dbg_msg("io", fmt, ##__VA_ARGS__) /* Additional commit messages */ #define dbg_cmt(fmt, ...) ubifs_dbg_msg("cmt", fmt, ##__VA_ARGS__) /* Additional budgeting messages */ #define dbg_budg(fmt, ...) ubifs_dbg_msg("budg", fmt, ##__VA_ARGS__) /* Additional log messages */ #define dbg_log(fmt, ...) ubifs_dbg_msg("log", fmt, ##__VA_ARGS__) /* Additional gc messages */ #define dbg_gc(fmt, ...) ubifs_dbg_msg("gc", fmt, ##__VA_ARGS__) /* Additional scan messages */ #define dbg_scan(fmt, ...) ubifs_dbg_msg("scan", fmt, ##__VA_ARGS__) /* Additional recovery messages */ #define dbg_rcvry(fmt, ...) ubifs_dbg_msg("rcvry", fmt, ##__VA_ARGS__) /* * Debugging check flags. * * 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. * * UBIFS_TST_RCVRY: failure mode for recovery testing */ enum { UBIFS_TST_RCVRY = 0x4, }; 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, const struct ubifs_budg_info *bi); 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); 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_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 */ static inline int dbg_force_in_the_gaps_enabled(void) { return ubifs_chk_flags & UBIFS_CHK_GEN; } 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 ubifs_dbg_msg(fmt, ...) do { \ if (0) \ pr_debug(fmt "\n", ##__VA_ARGS__); \ } while (0) #define dbg_dump_stack() #define ubifs_assert_cmt_locked(c) #define dbg_msg(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__) #define dbg_gen(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__) #define dbg_jnl(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__) #define dbg_tnc(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__) #define dbg_lp(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__) #define dbg_find(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__) #define dbg_mnt(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__) #define dbg_io(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__) #define dbg_cmt(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__) #define dbg_budg(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__) #define dbg_log(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__) #define dbg_gc(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__) #define dbg_scan(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__) #define dbg_rcvry(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__) #define DBGKEY(key) ((char *)(key)) #define DBGKEY1(key) ((char *)(key)) static inline int ubifs_debugging_init(struct ubifs_info *c) { return 0; } static inline void ubifs_debugging_exit(struct ubifs_info *c) { return; } static inline const char *dbg_ntype(int type) { return ""; } static inline const char *dbg_cstate(int cmt_state) { return ""; } static inline const char *dbg_jhead(int jhead) { return ""; } static inline const char * dbg_get_key_dump(const struct ubifs_info *c, const union ubifs_key *key) { return ""; } static inline void dbg_dump_inode(const struct ubifs_info *c, const struct inode *inode) { return; } static inline void dbg_dump_node(const struct ubifs_info *c, const void *node) { return; } static inline void dbg_dump_lpt_node(const struct ubifs_info *c, void *node, int lnum, int offs) { return; } static inline void dbg_dump_budget_req(const struct ubifs_budget_req *req) { return; } static inline void dbg_dump_lstats(const struct ubifs_lp_stats *lst) { return; } static inline void dbg_dump_budg(struct ubifs_info *c, const struct ubifs_budg_info *bi) { return; } static inline void dbg_dump_lprop(const struct ubifs_info *c, const struct ubifs_lprops *lp) { return; } static inline void dbg_dump_lprops(struct ubifs_info *c) { return; } static inline void dbg_dump_lpt_info(struct ubifs_info *c) { return; } static inline void dbg_dump_leb(const struct ubifs_info *c, int lnum) { return; } static inline void dbg_dump_znode(const struct ubifs_info *c, const struct ubifs_znode *znode) { return; } static inline void dbg_dump_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat) { return; } static inline void dbg_dump_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode, struct ubifs_nnode *parent, int iip) { return; } static inline void dbg_dump_tnc(struct ubifs_info *c) { return; } static inline void dbg_dump_index(struct ubifs_info *c) { return; } static inline void dbg_dump_lpt_lebs(const struct ubifs_info *c) { return; } static inline int dbg_walk_index(struct ubifs_info *c, dbg_leaf_callback leaf_cb, dbg_znode_callback znode_cb, void *priv) { return 0; } static inline void dbg_save_space_info(struct ubifs_info *c) { return; } static inline int dbg_check_space_info(struct ubifs_info *c) { return 0; } static inline int dbg_check_lprops(struct ubifs_info *c) { return 0; } static inline int dbg_old_index_check_init(struct ubifs_info *c, struct ubifs_zbranch *zroot) { return 0; } static inline int dbg_check_old_index(struct ubifs_info *c, struct ubifs_zbranch *zroot) { return 0; } static inline int dbg_check_cats(struct ubifs_info *c) { return 0; } static inline int dbg_check_ltab(struct ubifs_info *c) { return 0; } static inline int dbg_chk_lpt_free_spc(struct ubifs_info *c) { return 0; } static inline int dbg_chk_lpt_sz(struct ubifs_info *c, int action, int len) { return 0; } static inline int dbg_check_synced_i_size(struct inode *inode) { return 0; } static inline int dbg_check_dir_size(struct ubifs_info *c, const struct inode *dir) { return 0; } static inline int dbg_check_tnc(struct ubifs_info *c, int extra) { return 0; } static inline int dbg_check_idx_size(struct ubifs_info *c, long long idx_size) { return 0; } static inline int dbg_check_filesystem(struct ubifs_info *c) { return 0; } static inline void dbg_check_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat, int add_pos) { return; } static inline int dbg_check_lpt_nodes(struct ubifs_info *c, struct ubifs_cnode *cnode, int row, int col) { return 0; } 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; } static inline int dbg_force_in_the_gaps(void) { return 0; } #define dbg_force_in_the_gaps_enabled() 0 #define dbg_failure_mode 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; } #endif /* !CONFIG_UBIFS_FS_DEBUG */ #endif /* !__UBIFS_DEBUG_H__ */