[GFS2] Update copyright date to 2006
[linux-2.6.git] / fs / gfs2 / util.h
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 v.2.
8  */
9
10 #ifndef __UTIL_DOT_H__
11 #define __UTIL_DOT_H__
12
13
14 #define fs_printk(level, fs, fmt, arg...) \
15         printk(level "GFS2: fsid=%s: " fmt , (fs)->sd_fsname , ## arg)
16
17 #define fs_info(fs, fmt, arg...) \
18         fs_printk(KERN_INFO , fs , fmt , ## arg)
19
20 #define fs_warn(fs, fmt, arg...) \
21         fs_printk(KERN_WARNING , fs , fmt , ## arg)
22
23 #define fs_err(fs, fmt, arg...) \
24         fs_printk(KERN_ERR, fs , fmt , ## arg)
25
26
27 void gfs2_assert_i(struct gfs2_sbd *sdp);
28
29 #define gfs2_assert(sdp, assertion) \
30 do { \
31         if (unlikely(!(assertion))) { \
32                 gfs2_assert_i(sdp); \
33                 BUG(); \
34         } \
35 } while (0)
36
37
38 int gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion,
39                            const char *function, char *file, unsigned int line);
40
41 #define gfs2_assert_withdraw(sdp, assertion) \
42 ((likely(assertion)) ? 0 : gfs2_assert_withdraw_i((sdp), #assertion, \
43                                         __FUNCTION__, __FILE__, __LINE__))
44
45
46 int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion,
47                        const char *function, char *file, unsigned int line);
48
49 #define gfs2_assert_warn(sdp, assertion) \
50 ((likely(assertion)) ? 0 : gfs2_assert_warn_i((sdp), #assertion, \
51                                         __FUNCTION__, __FILE__, __LINE__))
52
53
54 int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide,
55                    const char *function, char *file, unsigned int line);
56
57 #define gfs2_consist(sdp) \
58 gfs2_consist_i((sdp), 0, __FUNCTION__, __FILE__, __LINE__)
59
60
61 int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide,
62                          const char *function, char *file, unsigned int line);
63
64 #define gfs2_consist_inode(ip) \
65 gfs2_consist_inode_i((ip), 0, __FUNCTION__, __FILE__, __LINE__)
66
67
68 int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide,
69                          const char *function, char *file, unsigned int line);
70
71 #define gfs2_consist_rgrpd(rgd) \
72 gfs2_consist_rgrpd_i((rgd), 0, __FUNCTION__, __FILE__, __LINE__)
73
74
75 int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
76                        const char *type, const char *function,
77                        char *file, unsigned int line);
78
79 static inline int gfs2_meta_check_i(struct gfs2_sbd *sdp,
80                                     struct buffer_head *bh,
81                                     const char *function,
82                                     char *file, unsigned int line)
83 {
84         struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data;
85         uint32_t magic = mh->mh_magic;
86         magic = be32_to_cpu(magic);
87         if (unlikely(magic != GFS2_MAGIC))
88                 return gfs2_meta_check_ii(sdp, bh, "magic number", function,
89                                           file, line);
90         return 0;
91 }
92
93 #define gfs2_meta_check(sdp, bh) \
94 gfs2_meta_check_i((sdp), (bh), __FUNCTION__, __FILE__, __LINE__)
95
96
97 int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
98                            uint16_t type, uint16_t t,
99                            const char *function,
100                            char *file, unsigned int line);
101
102 static inline int gfs2_metatype_check_i(struct gfs2_sbd *sdp,
103                                         struct buffer_head *bh,
104                                         uint16_t type,
105                                         const char *function,
106                                         char *file, unsigned int line)
107 {
108         struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data;
109         uint32_t magic = mh->mh_magic;
110         uint16_t t = be32_to_cpu(mh->mh_type);
111         magic = be32_to_cpu(magic);
112         if (unlikely(magic != GFS2_MAGIC))
113                 return gfs2_meta_check_ii(sdp, bh, "magic number", function,
114                                           file, line);
115         if (unlikely(t != type))
116                 return gfs2_metatype_check_ii(sdp, bh, type, t, function,
117                                               file, line);
118         return 0;
119 }
120
121 #define gfs2_metatype_check(sdp, bh, type) \
122 gfs2_metatype_check_i((sdp), (bh), (type), __FUNCTION__, __FILE__, __LINE__)
123
124 static inline void gfs2_metatype_set(struct buffer_head *bh, uint16_t type,
125                                      uint16_t format)
126 {
127         struct gfs2_meta_header *mh;
128         mh = (struct gfs2_meta_header *)bh->b_data;
129         mh->mh_type = cpu_to_be32(type);
130         mh->mh_format = cpu_to_be32(format);
131 }
132
133
134 int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function,
135                     char *file, unsigned int line);
136
137 #define gfs2_io_error(sdp) \
138 gfs2_io_error_i((sdp), __FUNCTION__, __FILE__, __LINE__);
139
140
141 int gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh,
142                        const char *function, char *file, unsigned int line);
143
144 #define gfs2_io_error_bh(sdp, bh) \
145 gfs2_io_error_bh_i((sdp), (bh), __FUNCTION__, __FILE__, __LINE__);
146
147
148 extern kmem_cache_t *gfs2_glock_cachep;
149 extern kmem_cache_t *gfs2_inode_cachep;
150 extern kmem_cache_t *gfs2_bufdata_cachep;
151
152 static inline unsigned int gfs2_tune_get_i(struct gfs2_tune *gt,
153                                            unsigned int *p)
154 {
155         unsigned int x;
156         spin_lock(&gt->gt_spin);
157         x = *p;
158         spin_unlock(&gt->gt_spin);
159         return x;
160 }
161
162 #define gfs2_tune_get(sdp, field) \
163 gfs2_tune_get_i(&(sdp)->sd_tune, &(sdp)->sd_tune.field)
164
165 void gfs2_icbit_munge(struct gfs2_sbd *sdp, unsigned char **bitmap,
166                       unsigned int bit, int new_value);
167
168 #endif /* __UTIL_DOT_H__ */
169