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 version 2.
   8  */
   9
  10 #ifndef __UTIL_DOT_H__
  11 #define __UTIL_DOT_H__
  12
  13 #include "incore.h"
  14
  15 #define fs_printk(level, fs, fmt, arg...) \
  16         printk(level "GFS2: fsid=%s: " fmt , (fs)->sd_fsname , ## arg)
  17
  18 #define fs_info(fs, fmt, arg...) \
  19         fs_printk(KERN_INFO , fs , fmt , ## arg)
  20
  21 #define fs_warn(fs, fmt, arg...) \
  22         fs_printk(KERN_WARNING , fs , fmt , ## arg)
  23
  24 #define fs_err(fs, fmt, arg...) \
  25         fs_printk(KERN_ERR, fs , fmt , ## arg)
  26
  27
  28 void gfs2_assert_i(struct gfs2_sbd *sdp);
  29
  30 #define gfs2_assert(sdp, assertion) \
  31 do { \
  32         if (unlikely(!(assertion))) { \
  33                 gfs2_assert_i(sdp); \
  34                 BUG(); \
  35         } \
  36 } while (0)
  37
  38
  39 int gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion,
  40                            const char *function, char *file, unsigned int line);
  41
  42 #define gfs2_assert_withdraw(sdp, assertion) \
  43 ((likely(assertion)) ? 0 : gfs2_assert_withdraw_i((sdp), #assertion, \
  44                                         __FUNCTION__, __FILE__, __LINE__))
  45
  46
  47 int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion,
  48                        const char *function, char *file, unsigned int line);
  49
  50 #define gfs2_assert_warn(sdp, assertion) \
  51 ((likely(assertion)) ? 0 : gfs2_assert_warn_i((sdp), #assertion, \
  52                                         __FUNCTION__, __FILE__, __LINE__))
  53
  54
  55 int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide,
  56                    const char *function, char *file, unsigned int line);
  57
  58 #define gfs2_consist(sdp) \
  59 gfs2_consist_i((sdp), 0, __FUNCTION__, __FILE__, __LINE__)
  60
  61
  62 int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide,
  63                          const char *function, char *file, unsigned int line);
  64
  65 #define gfs2_consist_inode(ip) \
  66 gfs2_consist_inode_i((ip), 0, __FUNCTION__, __FILE__, __LINE__)
  67
  68
  69 int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide,
  70                          const char *function, char *file, unsigned int line);
  71
  72 #define gfs2_consist_rgrpd(rgd) \
  73 gfs2_consist_rgrpd_i((rgd), 0, __FUNCTION__, __FILE__, __LINE__)
  74
  75
  76 int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
  77                        const char *type, const char *function,
  78                        char *file, unsigned int line);
  79
  80 static inline int gfs2_meta_check_i(struct gfs2_sbd *sdp,
  81                                     struct buffer_head *bh,
  82                                     const char *function,
  83                                     char *file, unsigned int line)
  84 {
  85         struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data;
  86         u32 magic = mh->mh_magic;
  87         magic = be32_to_cpu(magic);
  88         if (unlikely(magic != GFS2_MAGIC))
  89                 return gfs2_meta_check_ii(sdp, bh, "magic number", function,
  90                                           file, line);
  91         return 0;
  92 }
  93
  94 #define gfs2_meta_check(sdp, bh) \
  95 gfs2_meta_check_i((sdp), (bh), __FUNCTION__, __FILE__, __LINE__)
  96
  97
  98 int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
  99                            u16 type, u16 t,
 100                            const char *function,
 101                            char *file, unsigned int line);
 102
 103 static inline int gfs2_metatype_check_i(struct gfs2_sbd *sdp,
 104                                         struct buffer_head *bh,
 105                                         u16 type,
 106                                         const char *function,
 107                                         char *file, unsigned int line)
 108 {
 109         struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data;
 110         u32 magic = mh->mh_magic;
 111         u16 t = be32_to_cpu(mh->mh_type);
 112         magic = be32_to_cpu(magic);
 113         if (unlikely(magic != GFS2_MAGIC))
 114                 return gfs2_meta_check_ii(sdp, bh, "magic number", function,
 115                                           file, line);
 116         if (unlikely(t != type))
 117                 return gfs2_metatype_check_ii(sdp, bh, type, t, function,
 118                                               file, line);
 119         return 0;
 120 }
 121
 122 #define gfs2_metatype_check(sdp, bh, type) \
 123 gfs2_metatype_check_i((sdp), (bh), (type), __FUNCTION__, __FILE__, __LINE__)
 124
 125 static inline void gfs2_metatype_set(struct buffer_head *bh, u16 type,
 126                                      u16 format)
 127 {
 128         struct gfs2_meta_header *mh;
 129         mh = (struct gfs2_meta_header *)bh->b_data;
 130         mh->mh_type = cpu_to_be32(type);
 131         mh->mh_format = cpu_to_be32(format);
 132 }
 133
 134
 135 int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function,
 136                     char *file, unsigned int line);
 137
 138 #define gfs2_io_error(sdp) \
 139 gfs2_io_error_i((sdp), __FUNCTION__, __FILE__, __LINE__);
 140
 141
 142 int gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh,
 143                        const char *function, char *file, unsigned int line);
 144
 145 #define gfs2_io_error_bh(sdp, bh) \
 146 gfs2_io_error_bh_i((sdp), (bh), __FUNCTION__, __FILE__, __LINE__);
 147
 148
 149 extern kmem_cache_t *gfs2_glock_cachep;
 150 extern kmem_cache_t *gfs2_inode_cachep;
 151 extern kmem_cache_t *gfs2_bufdata_cachep;
 152
 153 static inline unsigned int gfs2_tune_get_i(struct gfs2_tune *gt,
 154                                            unsigned int *p)
 155 {
 156         unsigned int x;
 157         spin_lock(&gt->gt_spin);
 158         x = *p;
 159         spin_unlock(&gt->gt_spin);
 160         return x;
 161 }
 162
 163 #define gfs2_tune_get(sdp, field) \
 164 gfs2_tune_get_i(&(sdp)->sd_tune, &(sdp)->sd_tune.field)
 165
 166 void gfs2_icbit_munge(struct gfs2_sbd *sdp, unsigned char **bitmap,
 167                       unsigned int bit, int new_value);
 168
 169 #endif /* __UTIL_DOT_H__ */
 170