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TOMOYO Linux Cross Reference
Linux/fs/gfs2/util.h

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  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 #include <linux/mempool.h>
 14 
 15 #include "incore.h"
 16 
 17 #define fs_printk(level, fs, fmt, arg...) \
 18         printk(level "GFS2: fsid=%s: " fmt , (fs)->sd_fsname , ## arg)
 19 
 20 #define fs_info(fs, fmt, arg...) \
 21         fs_printk(KERN_INFO , fs , fmt , ## arg)
 22 
 23 #define fs_warn(fs, fmt, arg...) \
 24         fs_printk(KERN_WARNING , fs , fmt , ## arg)
 25 
 26 #define fs_err(fs, fmt, arg...) \
 27         fs_printk(KERN_ERR, fs , fmt , ## arg)
 28 
 29 
 30 void gfs2_assert_i(struct gfs2_sbd *sdp);
 31 
 32 #define gfs2_assert(sdp, assertion) \
 33 do { \
 34         if (unlikely(!(assertion))) { \
 35                 gfs2_assert_i(sdp); \
 36                 BUG(); \
 37         } \
 38 } while (0)
 39 
 40 
 41 int gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion,
 42                            const char *function, char *file, unsigned int line);
 43 
 44 #define gfs2_assert_withdraw(sdp, assertion) \
 45 ((likely(assertion)) ? 0 : gfs2_assert_withdraw_i((sdp), #assertion, \
 46                                         __func__, __FILE__, __LINE__))
 47 
 48 
 49 int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion,
 50                        const char *function, char *file, unsigned int line);
 51 
 52 #define gfs2_assert_warn(sdp, assertion) \
 53 ((likely(assertion)) ? 0 : gfs2_assert_warn_i((sdp), #assertion, \
 54                                         __func__, __FILE__, __LINE__))
 55 
 56 
 57 int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide,
 58                    const char *function, char *file, unsigned int line);
 59 
 60 #define gfs2_consist(sdp) \
 61 gfs2_consist_i((sdp), 0, __func__, __FILE__, __LINE__)
 62 
 63 
 64 int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide,
 65                          const char *function, char *file, unsigned int line);
 66 
 67 #define gfs2_consist_inode(ip) \
 68 gfs2_consist_inode_i((ip), 0, __func__, __FILE__, __LINE__)
 69 
 70 
 71 int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide,
 72                          const char *function, char *file, unsigned int line);
 73 
 74 #define gfs2_consist_rgrpd(rgd) \
 75 gfs2_consist_rgrpd_i((rgd), 0, __func__, __FILE__, __LINE__)
 76 
 77 
 78 int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
 79                        const char *type, const char *function,
 80                        char *file, unsigned int line);
 81 
 82 static inline int gfs2_meta_check(struct gfs2_sbd *sdp,
 83                                     struct buffer_head *bh)
 84 {
 85         struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data;
 86         u32 magic = be32_to_cpu(mh->mh_magic);
 87         if (unlikely(magic != GFS2_MAGIC)) {
 88                 printk(KERN_ERR "GFS2: Magic number missing at %llu\n",
 89                        (unsigned long long)bh->b_blocknr);
 90                 return -EIO;
 91         }
 92         return 0;
 93 }
 94 
 95 int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
 96                            u16 type, u16 t,
 97                            const char *function,
 98                            char *file, unsigned int line);
 99 
100 static inline int gfs2_metatype_check_i(struct gfs2_sbd *sdp,
101                                         struct buffer_head *bh,
102                                         u16 type,
103                                         const char *function,
104                                         char *file, unsigned int line)
105 {
106         struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data;
107         u32 magic = be32_to_cpu(mh->mh_magic);
108         u16 t = be32_to_cpu(mh->mh_type);
109         if (unlikely(magic != GFS2_MAGIC))
110                 return gfs2_meta_check_ii(sdp, bh, "magic number", function,
111                                           file, line);
112         if (unlikely(t != type))
113                 return gfs2_metatype_check_ii(sdp, bh, type, t, function,
114                                               file, line);
115         return 0;
116 }
117 
118 #define gfs2_metatype_check(sdp, bh, type) \
119 gfs2_metatype_check_i((sdp), (bh), (type), __func__, __FILE__, __LINE__)
120 
121 static inline void gfs2_metatype_set(struct buffer_head *bh, u16 type,
122                                      u16 format)
123 {
124         struct gfs2_meta_header *mh;
125         mh = (struct gfs2_meta_header *)bh->b_data;
126         mh->mh_type = cpu_to_be32(type);
127         mh->mh_format = cpu_to_be32(format);
128 }
129 
130 
131 int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function,
132                     char *file, unsigned int line);
133 
134 #define gfs2_io_error(sdp) \
135 gfs2_io_error_i((sdp), __func__, __FILE__, __LINE__);
136 
137 
138 int gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh,
139                        const char *function, char *file, unsigned int line);
140 
141 #define gfs2_io_error_bh(sdp, bh) \
142 gfs2_io_error_bh_i((sdp), (bh), __func__, __FILE__, __LINE__);
143 
144 
145 extern struct kmem_cache *gfs2_glock_cachep;
146 extern struct kmem_cache *gfs2_glock_aspace_cachep;
147 extern struct kmem_cache *gfs2_inode_cachep;
148 extern struct kmem_cache *gfs2_bufdata_cachep;
149 extern struct kmem_cache *gfs2_rgrpd_cachep;
150 extern struct kmem_cache *gfs2_quotad_cachep;
151 extern struct kmem_cache *gfs2_rsrv_cachep;
152 extern mempool_t *gfs2_page_pool;
153 
154 static inline unsigned int gfs2_tune_get_i(struct gfs2_tune *gt,
155                                            unsigned int *p)
156 {
157         unsigned int x;
158         spin_lock(&gt->gt_spin);
159         x = *p;
160         spin_unlock(&gt->gt_spin);
161         return x;
162 }
163 
164 #define gfs2_tune_get(sdp, field) \
165 gfs2_tune_get_i(&(sdp)->sd_tune, &(sdp)->sd_tune.field)
166 
167 void gfs2_icbit_munge(struct gfs2_sbd *sdp, unsigned char **bitmap,
168                       unsigned int bit, int new_value);
169 int gfs2_lm_withdraw(struct gfs2_sbd *sdp, char *fmt, ...);
170 
171 #endif /* __UTIL_DOT_H__ */
172 
173 

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