linux/fs/ubifs/debug.h
Linus Torvalds f632a8170a Driver Core and debugfs changes for 5.3-rc1
Here is the "big" driver core and debugfs changes for 5.3-rc1
 
 It's a lot of different patches, all across the tree due to some api
 changes and lots of debugfs cleanups.  Because of this, there is going
 to be some merge issues with your tree at the moment, I'll follow up
 with the expected resolutions to make it easier for you.
 
 Other than the debugfs cleanups, in this set of changes we have:
 	- bus iteration function cleanups (will cause build warnings
 	  with s390 and coresight drivers in your tree)
 	- scripts/get_abi.pl tool to display and parse Documentation/ABI
 	  entries in a simple way
 	- cleanups to Documenatation/ABI/ entries to make them parse
 	  easier due to typos and other minor things
 	- default_attrs use for some ktype users
 	- driver model documentation file conversions to .rst
 	- compressed firmware file loading
 	- deferred probe fixes
 
 All of these have been in linux-next for a while, with a bunch of merge
 issues that Stephen has been patient with me for.  Other than the merge
 issues, functionality is working properly in linux-next :)
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core and debugfs updates from Greg KH:
 "Here is the "big" driver core and debugfs changes for 5.3-rc1

  It's a lot of different patches, all across the tree due to some api
  changes and lots of debugfs cleanups.

  Other than the debugfs cleanups, in this set of changes we have:

   - bus iteration function cleanups

   - scripts/get_abi.pl tool to display and parse Documentation/ABI
     entries in a simple way

   - cleanups to Documenatation/ABI/ entries to make them parse easier
     due to typos and other minor things

   - default_attrs use for some ktype users

   - driver model documentation file conversions to .rst

   - compressed firmware file loading

   - deferred probe fixes

  All of these have been in linux-next for a while, with a bunch of
  merge issues that Stephen has been patient with me for"

* tag 'driver-core-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (102 commits)
  debugfs: make error message a bit more verbose
  orangefs: fix build warning from debugfs cleanup patch
  ubifs: fix build warning after debugfs cleanup patch
  driver: core: Allow subsystems to continue deferring probe
  drivers: base: cacheinfo: Ensure cpu hotplug work is done before Intel RDT
  arch_topology: Remove error messages on out-of-memory conditions
  lib: notifier-error-inject: no need to check return value of debugfs_create functions
  swiotlb: no need to check return value of debugfs_create functions
  ceph: no need to check return value of debugfs_create functions
  sunrpc: no need to check return value of debugfs_create functions
  ubifs: no need to check return value of debugfs_create functions
  orangefs: no need to check return value of debugfs_create functions
  nfsd: no need to check return value of debugfs_create functions
  lib: 842: no need to check return value of debugfs_create functions
  debugfs: provide pr_fmt() macro
  debugfs: log errors when something goes wrong
  drivers: s390/cio: Fix compilation warning about const qualifiers
  drivers: Add generic helper to match by of_node
  driver_find_device: Unify the match function with class_find_device()
  bus_find_device: Unify the match callback with class_find_device
  ...
2019-07-12 12:24:03 -07:00

306 lines
12 KiB
C

/* SPDX-License-Identifier: GPL-2.0-only */
/*
* This file is part of UBIFS.
*
* Copyright (C) 2006-2008 Nokia Corporation.
*
* 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);
/*
* The UBIFS debugfs directory name pattern and maximum name length (3 for "ubi"
* + 1 for "_" and plus 2x2 for 2 UBI numbers and 1 for the trailing zero byte.
*/
#define UBIFS_DFS_DIR_NAME "ubi%d_%d"
#define UBIFS_DFS_DIR_LEN (3 + 1 + 2*2 + 1)
/**
* 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()'
*
* @pc_happened: non-zero if an emulated power cut happened
* @pc_delay: 0=>don't delay, 1=>delay a time, 2=>delay a number of calls
* @pc_timeout: time in jiffies when delay of failure mode expires
* @pc_cnt: current number of calls to failure mode I/O functions
* @pc_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
*
* @chk_gen: if general extra checks are enabled
* @chk_index: if index xtra checks are enabled
* @chk_orph: if orphans extra checks are enabled
* @chk_lprops: if lprops extra checks are enabled
* @chk_fs: if UBIFS contents extra checks are enabled
* @tst_rcvry: if UBIFS recovery testing mode enabled
*
* @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
* @dfs_chk_gen: debugfs knob to enable UBIFS general extra checks
* @dfs_chk_index: debugfs knob to enable UBIFS index extra checks
* @dfs_chk_orph: debugfs knob to enable UBIFS orphans extra checks
* @dfs_chk_lprops: debugfs knob to enable UBIFS LEP properties extra checks
* @dfs_chk_fs: debugfs knob to enable UBIFS contents extra checks
* @dfs_tst_rcvry: debugfs knob to enable UBIFS recovery testing
* @dfs_ro_error: debugfs knob to switch UBIFS to R/O mode (different to
* re-mounting to R/O mode because it does not flush any buffers
* and UBIFS just starts returning -EROFS on all write
* operations)
*/
struct ubifs_debug_info {
struct ubifs_zbranch old_zroot;
int old_zroot_level;
unsigned long long old_zroot_sqnum;
int pc_happened;
int pc_delay;
unsigned long pc_timeout;
unsigned int pc_cnt;
unsigned int pc_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;
unsigned int chk_gen:1;
unsigned int chk_index:1;
unsigned int chk_orph:1;
unsigned int chk_lprops:1;
unsigned int chk_fs:1;
unsigned int tst_rcvry:1;
char dfs_dir_name[UBIFS_DFS_DIR_LEN + 1];
struct dentry *dfs_dir;
struct dentry *dfs_dump_lprops;
struct dentry *dfs_dump_budg;
struct dentry *dfs_dump_tnc;
struct dentry *dfs_chk_gen;
struct dentry *dfs_chk_index;
struct dentry *dfs_chk_orph;
struct dentry *dfs_chk_lprops;
struct dentry *dfs_chk_fs;
struct dentry *dfs_tst_rcvry;
struct dentry *dfs_ro_error;
};
/**
* ubifs_global_debug_info - global (not per-FS) UBIFS debugging information.
*
* @chk_gen: if general extra checks are enabled
* @chk_index: if index xtra checks are enabled
* @chk_orph: if orphans extra checks are enabled
* @chk_lprops: if lprops extra checks are enabled
* @chk_fs: if UBIFS contents extra checks are enabled
* @tst_rcvry: if UBIFS recovery testing mode enabled
*/
struct ubifs_global_debug_info {
unsigned int chk_gen:1;
unsigned int chk_index:1;
unsigned int chk_orph:1;
unsigned int chk_lprops:1;
unsigned int chk_fs:1;
unsigned int tst_rcvry:1;
};
void ubifs_assert_failed(struct ubifs_info *c, const char *expr,
const char *file, int line);
#define ubifs_assert(c, expr) do { \
if (unlikely(!(expr))) { \
ubifs_assert_failed((struct ubifs_info *)c, #expr, __FILE__, \
__LINE__); \
} \
} while (0)
#define ubifs_assert_cmt_locked(c) do { \
if (unlikely(down_write_trylock(&(c)->commit_sem))) { \
up_write(&(c)->commit_sem); \
ubifs_err(c, "commit lock is not locked!\n"); \
ubifs_assert(c, 0); \
} \
} while (0)
#define ubifs_dbg_msg(type, fmt, ...) \
pr_debug("UBIFS DBG " type " (pid %d): " fmt "\n", current->pid, \
##__VA_ARGS__)
#define DBG_KEY_BUF_LEN 48
#define ubifs_dbg_msg_key(type, key, fmt, ...) do { \
char __tmp_key_buf[DBG_KEY_BUF_LEN]; \
pr_debug("UBIFS DBG " type " (pid %d): " fmt "%s\n", current->pid, \
##__VA_ARGS__, \
dbg_snprintf_key(c, key, __tmp_key_buf, DBG_KEY_BUF_LEN)); \
} while (0)
/* 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__)
#define dbg_jnlk(key, fmt, ...) \
ubifs_dbg_msg_key("jnl", key, fmt, ##__VA_ARGS__)
/* Additional TNC messages */
#define dbg_tnc(fmt, ...) ubifs_dbg_msg("tnc", fmt, ##__VA_ARGS__)
#define dbg_tnck(key, fmt, ...) \
ubifs_dbg_msg_key("tnc", key, 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__)
#define dbg_mntk(key, fmt, ...) \
ubifs_dbg_msg_key("mnt", key, 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__)
extern struct ubifs_global_debug_info ubifs_dbg;
static inline int dbg_is_chk_gen(const struct ubifs_info *c)
{
return !!(ubifs_dbg.chk_gen || c->dbg->chk_gen);
}
static inline int dbg_is_chk_index(const struct ubifs_info *c)
{
return !!(ubifs_dbg.chk_index || c->dbg->chk_index);
}
static inline int dbg_is_chk_orph(const struct ubifs_info *c)
{
return !!(ubifs_dbg.chk_orph || c->dbg->chk_orph);
}
static inline int dbg_is_chk_lprops(const struct ubifs_info *c)
{
return !!(ubifs_dbg.chk_lprops || c->dbg->chk_lprops);
}
static inline int dbg_is_chk_fs(const struct ubifs_info *c)
{
return !!(ubifs_dbg.chk_fs || c->dbg->chk_fs);
}
static inline int dbg_is_tst_rcvry(const struct ubifs_info *c)
{
return !!(ubifs_dbg.tst_rcvry || c->dbg->tst_rcvry);
}
static inline int dbg_is_power_cut(const struct ubifs_info *c)
{
return !!c->dbg->pc_happened;
}
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);
const char *dbg_snprintf_key(const struct ubifs_info *c,
const union ubifs_key *key, char *buffer, int len);
void ubifs_dump_inode(struct ubifs_info *c, const struct inode *inode);
void ubifs_dump_node(const struct ubifs_info *c, const void *node);
void ubifs_dump_budget_req(const struct ubifs_budget_req *req);
void ubifs_dump_lstats(const struct ubifs_lp_stats *lst);
void ubifs_dump_budg(struct ubifs_info *c, const struct ubifs_budg_info *bi);
void ubifs_dump_lprop(const struct ubifs_info *c,
const struct ubifs_lprops *lp);
void ubifs_dump_lprops(struct ubifs_info *c);
void ubifs_dump_lpt_info(struct ubifs_info *c);
void ubifs_dump_leb(const struct ubifs_info *c, int lnum);
void ubifs_dump_sleb(const struct ubifs_info *c,
const struct ubifs_scan_leb *sleb, int offs);
void ubifs_dump_znode(const struct ubifs_info *c,
const struct ubifs_znode *znode);
void ubifs_dump_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap,
int cat);
void ubifs_dump_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode,
struct ubifs_nnode *parent, int iip);
void ubifs_dump_tnc(struct ubifs_info *c);
void ubifs_dump_index(struct ubifs_info *c);
void ubifs_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(const struct ubifs_info *c, struct inode *inode);
int dbg_check_dir(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);
int dbg_leb_write(struct ubifs_info *c, int lnum, const void *buf, int offs,
int len);
int dbg_leb_change(struct ubifs_info *c, int lnum, const void *buf, int len);
int dbg_leb_unmap(struct ubifs_info *c, int lnum);
int dbg_leb_map(struct ubifs_info *c, int lnum);
/* Debugfs-related stuff */
void dbg_debugfs_init(void);
void dbg_debugfs_exit(void);
void dbg_debugfs_init_fs(struct ubifs_info *c);
void dbg_debugfs_exit_fs(struct ubifs_info *c);
#endif /* !__UBIFS_DEBUG_H__ */