1 /*
2 * JFFS2 -- Journalling Flash File System, Version 2.
3 *
4 * Copyright © 2001-2007 Red Hat, Inc.
5 *
6 * Created by David Woodhouse <dwmw2@infradead.org>
7 *
8 * For licensing information, see the file 'LICENCE' in this directory.
9 *
10 */
11
12 #ifndef _JFFS2_DEBUG_H_
13 #define _JFFS2_DEBUG_H_
14
15 #include <linux/sched.h>
16
17 #ifndef CONFIG_JFFS2_FS_DEBUG
18 #define CONFIG_JFFS2_FS_DEBUG 0
19 #endif
20
21 #if CONFIG_JFFS2_FS_DEBUG > 0
22 /* Enable "paranoia" checks and dumps */
23 #define JFFS2_DBG_PARANOIA_CHECKS
24 #define JFFS2_DBG_DUMPS
25
26 /*
27 * By defining/undefining the below macros one may select debugging messages
28 * fro specific JFFS2 subsystems.
29 */
30 #define JFFS2_DBG_READINODE_MESSAGES
31 #define JFFS2_DBG_FRAGTREE_MESSAGES
32 #define JFFS2_DBG_DENTLIST_MESSAGES
33 #define JFFS2_DBG_NODEREF_MESSAGES
34 #define JFFS2_DBG_INOCACHE_MESSAGES
35 #define JFFS2_DBG_SUMMARY_MESSAGES
36 #define JFFS2_DBG_FSBUILD_MESSAGES
37 #endif
38
39 #if CONFIG_JFFS2_FS_DEBUG > 1
40 #define JFFS2_DBG_FRAGTREE2_MESSAGES
41 #define JFFS2_DBG_MEMALLOC_MESSAGES
42 #endif
43
44 /* Sanity checks are supposed to be light-weight and enabled by default */
45 #define JFFS2_DBG_SANITY_CHECKS
46
47 /*
48 * Dx() are mainly used for debugging messages, they must go away and be
49 * superseded by nicer dbg_xxx() macros...
50 */
51 #if CONFIG_JFFS2_FS_DEBUG > 0
52 #define D1(x) x
53 #else
54 #define D1(x)
55 #endif
56
57 #if CONFIG_JFFS2_FS_DEBUG > 1
58 #define D2(x) x
59 #else
60 #define D2(x)
61 #endif
62
63 /* The prefixes of JFFS2 messages */
64 #define JFFS2_DBG_PREFIX "[JFFS2 DBG]"
65 #define JFFS2_ERR_PREFIX "JFFS2 error:"
66 #define JFFS2_WARN_PREFIX "JFFS2 warning:"
67 #define JFFS2_NOTICE_PREFIX "JFFS2 notice:"
68
69 #define JFFS2_ERR KERN_ERR
70 #define JFFS2_WARN KERN_WARNING
71 #define JFFS2_NOT KERN_NOTICE
72 #define JFFS2_DBG KERN_DEBUG
73
74 #define JFFS2_DBG_MSG_PREFIX JFFS2_DBG JFFS2_DBG_PREFIX
75 #define JFFS2_ERR_MSG_PREFIX JFFS2_ERR JFFS2_ERR_PREFIX
76 #define JFFS2_WARN_MSG_PREFIX JFFS2_WARN JFFS2_WARN_PREFIX
77 #define JFFS2_NOTICE_MSG_PREFIX JFFS2_NOT JFFS2_NOTICE_PREFIX
78
79 /* JFFS2 message macros */
80 #define JFFS2_ERROR(fmt, ...) \
81 do { \
82 printk(JFFS2_ERR_MSG_PREFIX \
83 " (%d) %s: " fmt, task_pid_nr(current), \
84 __FUNCTION__ , ##__VA_ARGS__); \
85 } while(0)
86
87 #define JFFS2_WARNING(fmt, ...) \
88 do { \
89 printk(JFFS2_WARN_MSG_PREFIX \
90 " (%d) %s: " fmt, task_pid_nr(current), \
91 __FUNCTION__ , ##__VA_ARGS__); \
92 } while(0)
93
94 #define JFFS2_NOTICE(fmt, ...) \
95 do { \
96 printk(JFFS2_NOTICE_MSG_PREFIX \
97 " (%d) %s: " fmt, task_pid_nr(current), \
98 __FUNCTION__ , ##__VA_ARGS__); \
99 } while(0)
100
101 #define JFFS2_DEBUG(fmt, ...) \
102 do { \
103 printk(JFFS2_DBG_MSG_PREFIX \
104 " (%d) %s: " fmt, task_pid_nr(current), \
105 __FUNCTION__ , ##__VA_ARGS__); \
106 } while(0)
107
108 /*
109 * We split our debugging messages on several parts, depending on the JFFS2
110 * subsystem the message belongs to.
111 */
112 /* Read inode debugging messages */
113 #ifdef JFFS2_DBG_READINODE_MESSAGES
114 #define dbg_readinode(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
115 #else
116 #define dbg_readinode(fmt, ...)
117 #endif
118
119 /* Fragtree build debugging messages */
120 #ifdef JFFS2_DBG_FRAGTREE_MESSAGES
121 #define dbg_fragtree(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
122 #else
123 #define dbg_fragtree(fmt, ...)
124 #endif
125 #ifdef JFFS2_DBG_FRAGTREE2_MESSAGES
126 #define dbg_fragtree2(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
127 #else
128 #define dbg_fragtree2(fmt, ...)
129 #endif
130
131 /* Directory entry list manilulation debugging messages */
132 #ifdef JFFS2_DBG_DENTLIST_MESSAGES
133 #define dbg_dentlist(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
134 #else
135 #define dbg_dentlist(fmt, ...)
136 #endif
137
138 /* Print the messages about manipulating node_refs */
139 #ifdef JFFS2_DBG_NODEREF_MESSAGES
140 #define dbg_noderef(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
141 #else
142 #define dbg_noderef(fmt, ...)
143 #endif
144
145 /* Manipulations with the list of inodes (JFFS2 inocache) */
146 #ifdef JFFS2_DBG_INOCACHE_MESSAGES
147 #define dbg_inocache(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
148 #else
149 #define dbg_inocache(fmt, ...)
150 #endif
151
152 /* Summary debugging messages */
153 #ifdef JFFS2_DBG_SUMMARY_MESSAGES
154 #define dbg_summary(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
155 #else
156 #define dbg_summary(fmt, ...)
157 #endif
158
159 /* File system build messages */
160 #ifdef JFFS2_DBG_FSBUILD_MESSAGES
161 #define dbg_fsbuild(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
162 #else
163 #define dbg_fsbuild(fmt, ...)
164 #endif
165
166 /* Watch the object allocations */
167 #ifdef JFFS2_DBG_MEMALLOC_MESSAGES
168 #define dbg_memalloc(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
169 #else
170 #define dbg_memalloc(fmt, ...)
171 #endif
172
173 /* Watch the XATTR subsystem */
174 #ifdef JFFS2_DBG_XATTR_MESSAGES
175 #define dbg_xattr(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
176 #else
177 #define dbg_xattr(fmt, ...)
178 #endif
179
180 /* "Sanity" checks */
181 void
182 __jffs2_dbg_acct_sanity_check_nolock(struct jffs2_sb_info *c,
183 struct jffs2_eraseblock *jeb);
184 void
185 __jffs2_dbg_acct_sanity_check(struct jffs2_sb_info *c,
186 struct jffs2_eraseblock *jeb);
187
188 /* "Paranoia" checks */
189 void
190 __jffs2_dbg_fragtree_paranoia_check(struct jffs2_inode_info *f);
191 void
192 __jffs2_dbg_fragtree_paranoia_check_nolock(struct jffs2_inode_info *f);
193 void
194 __jffs2_dbg_acct_paranoia_check(struct jffs2_sb_info *c,
195 struct jffs2_eraseblock *jeb);
196 void
197 __jffs2_dbg_acct_paranoia_check_nolock(struct jffs2_sb_info *c,
198 struct jffs2_eraseblock *jeb);
199 void
200 __jffs2_dbg_prewrite_paranoia_check(struct jffs2_sb_info *c,
201 uint32_t ofs, int len);
202
203 /* "Dump" functions */
204 void
205 __jffs2_dbg_dump_jeb(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
206 void
207 __jffs2_dbg_dump_jeb_nolock(struct jffs2_eraseblock *jeb);
208 void
209 __jffs2_dbg_dump_block_lists(struct jffs2_sb_info *c);
210 void
211 __jffs2_dbg_dump_block_lists_nolock(struct jffs2_sb_info *c);
212 void
213 __jffs2_dbg_dump_node_refs(struct jffs2_sb_info *c,
214 struct jffs2_eraseblock *jeb);
215 void
216 __jffs2_dbg_dump_node_refs_nolock(struct jffs2_sb_info *c,
217 struct jffs2_eraseblock *jeb);
218 void
219 __jffs2_dbg_dump_fragtree(struct jffs2_inode_info *f);
220 void
221 __jffs2_dbg_dump_fragtree_nolock(struct jffs2_inode_info *f);
222 void
223 __jffs2_dbg_dump_buffer(unsigned char *buf, int len, uint32_t offs);
224 void
225 __jffs2_dbg_dump_node(struct jffs2_sb_info *c, uint32_t ofs);
226
227 #ifdef JFFS2_DBG_PARANOIA_CHECKS
228 #define jffs2_dbg_fragtree_paranoia_check(f) \
229 __jffs2_dbg_fragtree_paranoia_check(f)
230 #define jffs2_dbg_fragtree_paranoia_check_nolock(f) \
231 __jffs2_dbg_fragtree_paranoia_check_nolock(f)
232 #define jffs2_dbg_acct_paranoia_check(c, jeb) \
233 __jffs2_dbg_acct_paranoia_check(c,jeb)
234 #define jffs2_dbg_acct_paranoia_check_nolock(c, jeb) \
235 __jffs2_dbg_acct_paranoia_check_nolock(c,jeb)
236 #define jffs2_dbg_prewrite_paranoia_check(c, ofs, len) \
237 __jffs2_dbg_prewrite_paranoia_check(c, ofs, len)
238 #else
239 #define jffs2_dbg_fragtree_paranoia_check(f)
240 #define jffs2_dbg_fragtree_paranoia_check_nolock(f)
241 #define jffs2_dbg_acct_paranoia_check(c, jeb)
242 #define jffs2_dbg_acct_paranoia_check_nolock(c, jeb)
243 #define jffs2_dbg_prewrite_paranoia_check(c, ofs, len)
244 #endif /* !JFFS2_PARANOIA_CHECKS */
245
246 #ifdef JFFS2_DBG_DUMPS
247 #define jffs2_dbg_dump_jeb(c, jeb) \
248 __jffs2_dbg_dump_jeb(c, jeb);
249 #define jffs2_dbg_dump_jeb_nolock(jeb) \
250 __jffs2_dbg_dump_jeb_nolock(jeb);
251 #define jffs2_dbg_dump_block_lists(c) \
252 __jffs2_dbg_dump_block_lists(c)
253 #define jffs2_dbg_dump_block_lists_nolock(c) \
254 __jffs2_dbg_dump_block_lists_nolock(c)
255 #define jffs2_dbg_dump_fragtree(f) \
256 __jffs2_dbg_dump_fragtree(f);
257 #define jffs2_dbg_dump_fragtree_nolock(f) \
258 __jffs2_dbg_dump_fragtree_nolock(f);
259 #define jffs2_dbg_dump_buffer(buf, len, offs) \
260 __jffs2_dbg_dump_buffer(*buf, len, offs);
261 #define jffs2_dbg_dump_node(c, ofs) \
262 __jffs2_dbg_dump_node(c, ofs);
263 #else
264 #define jffs2_dbg_dump_jeb(c, jeb)
265 #define jffs2_dbg_dump_jeb_nolock(jeb)
266 #define jffs2_dbg_dump_block_lists(c)
267 #define jffs2_dbg_dump_block_lists_nolock(c)
268 #define jffs2_dbg_dump_fragtree(f)
269 #define jffs2_dbg_dump_fragtree_nolock(f)
270 #define jffs2_dbg_dump_buffer(buf, len, offs)
271 #define jffs2_dbg_dump_node(c, ofs)
272 #endif /* !JFFS2_DBG_DUMPS */
273
274 #ifdef JFFS2_DBG_SANITY_CHECKS
275 #define jffs2_dbg_acct_sanity_check(c, jeb) \
276 __jffs2_dbg_acct_sanity_check(c, jeb)
277 #define jffs2_dbg_acct_sanity_check_nolock(c, jeb) \
278 __jffs2_dbg_acct_sanity_check_nolock(c, jeb)
279 #else
280 #define jffs2_dbg_acct_sanity_check(c, jeb)
281 #define jffs2_dbg_acct_sanity_check_nolock(c, jeb)
282 #endif /* !JFFS2_DBG_SANITY_CHECKS */
283
284 #endif /* _JFFS2_DEBUG_H_ */
285
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