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
  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         u32 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                            u16 type, u16 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                                         u16 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         u32 magic = mh->mh_magic;
 110         u16 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, u16 type,
 125                                      u16 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