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1/*
2 * JFFS2 -- Journalling Flash File System, Version 2.
3 *
c00c310e 4 * Copyright © 2001-2007 Red Hat, Inc.
6088c058 5 * Copyright © 2004-2010 David Woodhouse <dwmw2@infradead.org>
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6 *
7 * Created by David Woodhouse <dwmw2@infradead.org>
8 *
9 * For licensing information, see the file 'LICENCE' in this directory.
10 *
730554d9 11 */
c00c310e 12
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13#ifndef _JFFS2_DEBUG_H_
14#define _JFFS2_DEBUG_H_
15
e499e01d 16#include <linux/sched.h>
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17
18#ifndef CONFIG_JFFS2_FS_DEBUG
f538c96b 19#define CONFIG_JFFS2_FS_DEBUG 0
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20#endif
21
008531f4 22#if CONFIG_JFFS2_FS_DEBUG > 0
e0c8e42f 23/* Enable "paranoia" checks and dumps */
730554d9 24#define JFFS2_DBG_PARANOIA_CHECKS
e0c8e42f 25#define JFFS2_DBG_DUMPS
733802d9 26
182ec4ee 27/*
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28 * By defining/undefining the below macros one may select debugging messages
29 * fro specific JFFS2 subsystems.
30 */
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31#define JFFS2_DBG_READINODE_MESSAGES
32#define JFFS2_DBG_FRAGTREE_MESSAGES
33#define JFFS2_DBG_DENTLIST_MESSAGES
34#define JFFS2_DBG_NODEREF_MESSAGES
35#define JFFS2_DBG_INOCACHE_MESSAGES
e631ddba 36#define JFFS2_DBG_SUMMARY_MESSAGES
733802d9 37#define JFFS2_DBG_FSBUILD_MESSAGES
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38#endif
39
008531f4 40#if CONFIG_JFFS2_FS_DEBUG > 1
e0c8e42f 41#define JFFS2_DBG_FRAGTREE2_MESSAGES
2c61cb25 42#define JFFS2_DBG_READINODE2_MESSAGES
733802d9 43#define JFFS2_DBG_MEMALLOC_MESSAGES
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44#endif
45
45ca1b50 46/* Sanity checks are supposed to be light-weight and enabled by default */
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47#define JFFS2_DBG_SANITY_CHECKS
48
182ec4ee 49/*
e0c8e42f 50 * Dx() are mainly used for debugging messages, they must go away and be
733802d9 51 * superseded by nicer dbg_xxx() macros...
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52 */
53#if CONFIG_JFFS2_FS_DEBUG > 0
9c261b33 54#define DEBUG
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55#define D1(x) x
56#else
57#define D1(x)
58#endif
59
60#if CONFIG_JFFS2_FS_DEBUG > 1
61#define D2(x) x
62#else
63#define D2(x)
64#endif
65
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66#define jffs2_dbg(level, fmt, ...) \
67do { \
68 if (CONFIG_JFFS2_FS_DEBUG >= level) \
69 pr_debug(fmt, ##__VA_ARGS__); \
70} while (0)
71
e0c8e42f 72/* The prefixes of JFFS2 messages */
9bbf29e4 73#define JFFS2_DBG KERN_DEBUG
81e39cf0 74#define JFFS2_DBG_PREFIX "[JFFS2 DBG]"
81e39cf0 75#define JFFS2_DBG_MSG_PREFIX JFFS2_DBG JFFS2_DBG_PREFIX
730554d9 76
e0c8e42f 77/* JFFS2 message macros */
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78#define JFFS2_ERROR(fmt, ...) \
79 pr_err("error: (%d) %s: " fmt, \
80 task_pid_nr(current), __func__, ##__VA_ARGS__)
730554d9 81
e0c8e42f 82#define JFFS2_WARNING(fmt, ...) \
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83 pr_warn("warning: (%d) %s: " fmt, \
84 task_pid_nr(current), __func__, ##__VA_ARGS__)
182ec4ee 85
e0c8e42f 86#define JFFS2_NOTICE(fmt, ...) \
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87 pr_notice("notice: (%d) %s: " fmt, \
88 task_pid_nr(current), __func__, ##__VA_ARGS__)
730554d9 89
e0c8e42f 90#define JFFS2_DEBUG(fmt, ...) \
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91 printk(KERN_DEBUG "[JFFS2 DBG] (%d) %s: " fmt, \
92 task_pid_nr(current), __func__, ##__VA_ARGS__)
e0c8e42f 93
182ec4ee 94/*
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95 * We split our debugging messages on several parts, depending on the JFFS2
96 * subsystem the message belongs to.
97 */
98/* Read inode debugging messages */
99#ifdef JFFS2_DBG_READINODE_MESSAGES
733802d9 100#define dbg_readinode(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
e0c8e42f 101#else
733802d9 102#define dbg_readinode(fmt, ...)
730554d9 103#endif
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104#ifdef JFFS2_DBG_READINODE2_MESSAGES
105#define dbg_readinode2(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
106#else
107#define dbg_readinode2(fmt, ...)
108#endif
730554d9 109
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110/* Fragtree build debugging messages */
111#ifdef JFFS2_DBG_FRAGTREE_MESSAGES
733802d9 112#define dbg_fragtree(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
e0c8e42f 113#else
733802d9 114#define dbg_fragtree(fmt, ...)
e0c8e42f 115#endif
e0e3006f 116#ifdef JFFS2_DBG_FRAGTREE2_MESSAGES
733802d9 117#define dbg_fragtree2(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
e0e3006f 118#else
733802d9 119#define dbg_fragtree2(fmt, ...)
e0e3006f 120#endif
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121
122/* Directory entry list manilulation debugging messages */
123#ifdef JFFS2_DBG_DENTLIST_MESSAGES
733802d9 124#define dbg_dentlist(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
e0c8e42f 125#else
733802d9 126#define dbg_dentlist(fmt, ...)
e0c8e42f 127#endif
e0c8e42f 128
f538c96b 129/* Print the messages about manipulating node_refs */
e0c8e42f 130#ifdef JFFS2_DBG_NODEREF_MESSAGES
733802d9 131#define dbg_noderef(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
e0c8e42f 132#else
733802d9 133#define dbg_noderef(fmt, ...)
e0c8e42f 134#endif
730554d9 135
f538c96b 136/* Manipulations with the list of inodes (JFFS2 inocache) */
e0c8e42f 137#ifdef JFFS2_DBG_INOCACHE_MESSAGES
733802d9 138#define dbg_inocache(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
e0c8e42f 139#else
733802d9 140#define dbg_inocache(fmt, ...)
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141#endif
142
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143/* Summary debugging messages */
144#ifdef JFFS2_DBG_SUMMARY_MESSAGES
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145#define dbg_summary(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
146#else
147#define dbg_summary(fmt, ...)
148#endif
149
150/* File system build messages */
151#ifdef JFFS2_DBG_FSBUILD_MESSAGES
152#define dbg_fsbuild(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
e631ddba 153#else
733802d9 154#define dbg_fsbuild(fmt, ...)
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155#endif
156
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157/* Watch the object allocations */
158#ifdef JFFS2_DBG_MEMALLOC_MESSAGES
733802d9 159#define dbg_memalloc(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
f538c96b 160#else
733802d9 161#define dbg_memalloc(fmt, ...)
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162#endif
163
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164/* Watch the XATTR subsystem */
165#ifdef JFFS2_DBG_XATTR_MESSAGES
166#define dbg_xattr(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
167#else
168#define dbg_xattr(fmt, ...)
169#endif
f538c96b 170
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171/* "Sanity" checks */
172void
173__jffs2_dbg_acct_sanity_check_nolock(struct jffs2_sb_info *c,
174 struct jffs2_eraseblock *jeb);
175void
176__jffs2_dbg_acct_sanity_check(struct jffs2_sb_info *c,
177 struct jffs2_eraseblock *jeb);
178
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179/* "Paranoia" checks */
180void
181__jffs2_dbg_fragtree_paranoia_check(struct jffs2_inode_info *f);
730554d9 182void
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183__jffs2_dbg_fragtree_paranoia_check_nolock(struct jffs2_inode_info *f);
184void
185__jffs2_dbg_acct_paranoia_check(struct jffs2_sb_info *c,
186 struct jffs2_eraseblock *jeb);
187void
188__jffs2_dbg_acct_paranoia_check_nolock(struct jffs2_sb_info *c,
189 struct jffs2_eraseblock *jeb);
190void
191__jffs2_dbg_prewrite_paranoia_check(struct jffs2_sb_info *c,
192 uint32_t ofs, int len);
730554d9 193
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194/* "Dump" functions */
195void
196__jffs2_dbg_dump_jeb(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
197void
198__jffs2_dbg_dump_jeb_nolock(struct jffs2_eraseblock *jeb);
199void
200__jffs2_dbg_dump_block_lists(struct jffs2_sb_info *c);
201void
202__jffs2_dbg_dump_block_lists_nolock(struct jffs2_sb_info *c);
203void
204__jffs2_dbg_dump_node_refs(struct jffs2_sb_info *c,
205 struct jffs2_eraseblock *jeb);
206void
207__jffs2_dbg_dump_node_refs_nolock(struct jffs2_sb_info *c,
208 struct jffs2_eraseblock *jeb);
209void
210__jffs2_dbg_dump_fragtree(struct jffs2_inode_info *f);
211void
212__jffs2_dbg_dump_fragtree_nolock(struct jffs2_inode_info *f);
730554d9 213void
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214__jffs2_dbg_dump_buffer(unsigned char *buf, int len, uint32_t offs);
215void
216__jffs2_dbg_dump_node(struct jffs2_sb_info *c, uint32_t ofs);
217
218#ifdef JFFS2_DBG_PARANOIA_CHECKS
219#define jffs2_dbg_fragtree_paranoia_check(f) \
220 __jffs2_dbg_fragtree_paranoia_check(f)
221#define jffs2_dbg_fragtree_paranoia_check_nolock(f) \
222 __jffs2_dbg_fragtree_paranoia_check_nolock(f)
223#define jffs2_dbg_acct_paranoia_check(c, jeb) \
224 __jffs2_dbg_acct_paranoia_check(c,jeb)
225#define jffs2_dbg_acct_paranoia_check_nolock(c, jeb) \
226 __jffs2_dbg_acct_paranoia_check_nolock(c,jeb)
227#define jffs2_dbg_prewrite_paranoia_check(c, ofs, len) \
228 __jffs2_dbg_prewrite_paranoia_check(c, ofs, len)
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229#else
230#define jffs2_dbg_fragtree_paranoia_check(f)
e0c8e42f 231#define jffs2_dbg_fragtree_paranoia_check_nolock(f)
730554d9 232#define jffs2_dbg_acct_paranoia_check(c, jeb)
e0c8e42f 233#define jffs2_dbg_acct_paranoia_check_nolock(c, jeb)
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234#define jffs2_dbg_prewrite_paranoia_check(c, ofs, len)
235#endif /* !JFFS2_PARANOIA_CHECKS */
236
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237#ifdef JFFS2_DBG_DUMPS
238#define jffs2_dbg_dump_jeb(c, jeb) \
239 __jffs2_dbg_dump_jeb(c, jeb);
240#define jffs2_dbg_dump_jeb_nolock(jeb) \
241 __jffs2_dbg_dump_jeb_nolock(jeb);
242#define jffs2_dbg_dump_block_lists(c) \
243 __jffs2_dbg_dump_block_lists(c)
244#define jffs2_dbg_dump_block_lists_nolock(c) \
245 __jffs2_dbg_dump_block_lists_nolock(c)
246#define jffs2_dbg_dump_fragtree(f) \
247 __jffs2_dbg_dump_fragtree(f);
248#define jffs2_dbg_dump_fragtree_nolock(f) \
249 __jffs2_dbg_dump_fragtree_nolock(f);
250#define jffs2_dbg_dump_buffer(buf, len, offs) \
251 __jffs2_dbg_dump_buffer(*buf, len, offs);
252#define jffs2_dbg_dump_node(c, ofs) \
253 __jffs2_dbg_dump_node(c, ofs);
254#else
255#define jffs2_dbg_dump_jeb(c, jeb)
256#define jffs2_dbg_dump_jeb_nolock(jeb)
257#define jffs2_dbg_dump_block_lists(c)
258#define jffs2_dbg_dump_block_lists_nolock(c)
259#define jffs2_dbg_dump_fragtree(f)
260#define jffs2_dbg_dump_fragtree_nolock(f)
261#define jffs2_dbg_dump_buffer(buf, len, offs)
262#define jffs2_dbg_dump_node(c, ofs)
263#endif /* !JFFS2_DBG_DUMPS */
264
730554d9 265#ifdef JFFS2_DBG_SANITY_CHECKS
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266#define jffs2_dbg_acct_sanity_check(c, jeb) \
267 __jffs2_dbg_acct_sanity_check(c, jeb)
268#define jffs2_dbg_acct_sanity_check_nolock(c, jeb) \
269 __jffs2_dbg_acct_sanity_check_nolock(c, jeb)
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270#else
271#define jffs2_dbg_acct_sanity_check(c, jeb)
272#define jffs2_dbg_acct_sanity_check_nolock(c, jeb)
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273#endif /* !JFFS2_DBG_SANITY_CHECKS */
274
275#endif /* _JFFS2_DEBUG_H_ */