1 /*
2  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
3  * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
4  *
5  * This copyrighted material is made available to anyone wishing to use,
6  * modify, copy, or redistribute it subject to the terms and conditions
7  * of the GNU General Public License version 2.
8  */
9 
10 #ifndef __UTIL_DOT_H__
11 #define __UTIL_DOT_H__
12 
13 #ifdef pr_fmt
14 #undef pr_fmt
15 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
16 #endif
17 
18 #include <linux/mempool.h>
19 
20 #include "incore.h"
21 
22 #define fs_emerg(fs, fmt, ...)						\
23 	pr_emerg("fsid=%s: " fmt, (fs)->sd_fsname, ##__VA_ARGS__)
24 #define fs_warn(fs, fmt, ...)						\
25 	pr_warn("fsid=%s: " fmt, (fs)->sd_fsname, ##__VA_ARGS__)
26 #define fs_err(fs, fmt, ...)						\
27 	pr_err("fsid=%s: " fmt, (fs)->sd_fsname, ##__VA_ARGS__)
28 #define fs_info(fs, fmt, ...)						\
29 	pr_info("fsid=%s: " fmt, (fs)->sd_fsname, ##__VA_ARGS__)
30 
31 void gfs2_assert_i(struct gfs2_sbd *sdp);
32 
33 #define gfs2_assert(sdp, assertion) \
34 do { \
35 	if (unlikely(!(assertion))) { \
36 		gfs2_assert_i(sdp); \
37 		BUG(); \
38         } \
39 } while (0)
40 
41 
42 int gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion,
43 			   const char *function, char *file, unsigned int line);
44 
45 #define gfs2_assert_withdraw(sdp, assertion) \
46 ((likely(assertion)) ? 0 : gfs2_assert_withdraw_i((sdp), #assertion, \
47 					__func__, __FILE__, __LINE__))
48 
49 
50 int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion,
51 		       const char *function, char *file, unsigned int line);
52 
53 #define gfs2_assert_warn(sdp, assertion) \
54 ((likely(assertion)) ? 0 : gfs2_assert_warn_i((sdp), #assertion, \
55 					__func__, __FILE__, __LINE__))
56 
57 
58 int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide,
59 		   const char *function, char *file, unsigned int line);
60 
61 #define gfs2_consist(sdp) \
62 gfs2_consist_i((sdp), 0, __func__, __FILE__, __LINE__)
63 
64 
65 int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide,
66 			 const char *function, char *file, unsigned int line);
67 
68 #define gfs2_consist_inode(ip) \
69 gfs2_consist_inode_i((ip), 0, __func__, __FILE__, __LINE__)
70 
71 
72 int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide,
73 			 const char *function, char *file, unsigned int line);
74 
75 #define gfs2_consist_rgrpd(rgd) \
76 gfs2_consist_rgrpd_i((rgd), 0, __func__, __FILE__, __LINE__)
77 
78 
79 int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
80 		       const char *type, const char *function,
81 		       char *file, unsigned int line);
82 
gfs2_meta_check(struct gfs2_sbd * sdp,struct buffer_head * bh)83 static inline int gfs2_meta_check(struct gfs2_sbd *sdp,
84 				    struct buffer_head *bh)
85 {
86 	struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data;
87 	u32 magic = be32_to_cpu(mh->mh_magic);
88 	if (unlikely(magic != GFS2_MAGIC)) {
89 		pr_err("Magic number missing at %llu\n",
90 		       (unsigned long long)bh->b_blocknr);
91 		return -EIO;
92 	}
93 	return 0;
94 }
95 
96 int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
97 			   u16 type, u16 t,
98 			   const char *function,
99 			   char *file, unsigned int line);
100 
gfs2_metatype_check_i(struct gfs2_sbd * sdp,struct buffer_head * bh,u16 type,const char * function,char * file,unsigned int line)101 static inline int gfs2_metatype_check_i(struct gfs2_sbd *sdp,
102 					struct buffer_head *bh,
103 					u16 type,
104 					const char *function,
105 					char *file, unsigned int line)
106 {
107 	struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data;
108 	u32 magic = be32_to_cpu(mh->mh_magic);
109 	u16 t = be32_to_cpu(mh->mh_type);
110 	if (unlikely(magic != GFS2_MAGIC))
111 		return gfs2_meta_check_ii(sdp, bh, "magic number", function,
112 					  file, line);
113         if (unlikely(t != type))
114 		return gfs2_metatype_check_ii(sdp, bh, type, t, function,
115 					      file, line);
116 	return 0;
117 }
118 
119 #define gfs2_metatype_check(sdp, bh, type) \
120 gfs2_metatype_check_i((sdp), (bh), (type), __func__, __FILE__, __LINE__)
121 
gfs2_metatype_set(struct buffer_head * bh,u16 type,u16 format)122 static inline void gfs2_metatype_set(struct buffer_head *bh, u16 type,
123 				     u16 format)
124 {
125 	struct gfs2_meta_header *mh;
126 	mh = (struct gfs2_meta_header *)bh->b_data;
127 	mh->mh_type = cpu_to_be32(type);
128 	mh->mh_format = cpu_to_be32(format);
129 }
130 
131 
132 int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function,
133 		    char *file, unsigned int line);
134 
135 #define gfs2_io_error(sdp) \
136 gfs2_io_error_i((sdp), __func__, __FILE__, __LINE__);
137 
138 
139 void gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh,
140 			const char *function, char *file, unsigned int line,
141 			bool withdraw);
142 
143 #define gfs2_io_error_bh_wd(sdp, bh) \
144 gfs2_io_error_bh_i((sdp), (bh), __func__, __FILE__, __LINE__, true);
145 
146 #define gfs2_io_error_bh(sdp, bh) \
147 gfs2_io_error_bh_i((sdp), (bh), __func__, __FILE__, __LINE__, false);
148 
149 
150 extern struct kmem_cache *gfs2_glock_cachep;
151 extern struct kmem_cache *gfs2_glock_aspace_cachep;
152 extern struct kmem_cache *gfs2_inode_cachep;
153 extern struct kmem_cache *gfs2_bufdata_cachep;
154 extern struct kmem_cache *gfs2_rgrpd_cachep;
155 extern struct kmem_cache *gfs2_quotad_cachep;
156 extern struct kmem_cache *gfs2_qadata_cachep;
157 extern mempool_t *gfs2_page_pool;
158 extern struct workqueue_struct *gfs2_control_wq;
159 
gfs2_tune_get_i(struct gfs2_tune * gt,unsigned int * p)160 static inline unsigned int gfs2_tune_get_i(struct gfs2_tune *gt,
161 					   unsigned int *p)
162 {
163 	unsigned int x;
164 	spin_lock(&gt->gt_spin);
165 	x = *p;
166 	spin_unlock(&gt->gt_spin);
167 	return x;
168 }
169 
170 #define gfs2_tune_get(sdp, field) \
171 gfs2_tune_get_i(&(sdp)->sd_tune, &(sdp)->sd_tune.field)
172 
173 __printf(2, 3)
174 int gfs2_lm_withdraw(struct gfs2_sbd *sdp, const char *fmt, ...);
175 
176 #endif /* __UTIL_DOT_H__ */
177