err.no Git - linux-2.6/blob - fs/gfs2/util.h

   1 /*
   2  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
   3  * Copyright (C) 2004-2005 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         } \
  34 } while (0)
  35
  36
  37 int gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion,
  38                            const char *function, char *file, unsigned int line);
  39
  40 #define gfs2_assert_withdraw(sdp, assertion) \
  41 ((likely(assertion)) ? 0 : gfs2_assert_withdraw_i((sdp), #assertion, \
  42                                         __FUNCTION__, __FILE__, __LINE__))
  43
  44
  45 int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion,
  46                        const char *function, char *file, unsigned int line);
  47
  48 #define gfs2_assert_warn(sdp, assertion) \
  49 ((likely(assertion)) ? 0 : gfs2_assert_warn_i((sdp), #assertion, \
  50                                         __FUNCTION__, __FILE__, __LINE__))
  51
  52
  53 int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide,
  54                    const char *function, char *file, unsigned int line);
  55
  56 #define gfs2_consist(sdp) \
  57 gfs2_consist_i((sdp), 0, __FUNCTION__, __FILE__, __LINE__)
  58
  59
  60 int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide,
  61                          const char *function, char *file, unsigned int line);
  62
  63 #define gfs2_consist_inode(ip) \
  64 gfs2_consist_inode_i((ip), 0, __FUNCTION__, __FILE__, __LINE__)
  65
  66
  67 int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide,
  68                          const char *function, char *file, unsigned int line);
  69
  70 #define gfs2_consist_rgrpd(rgd) \
  71 gfs2_consist_rgrpd_i((rgd), 0, __FUNCTION__, __FILE__, __LINE__)
  72
  73
  74 int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
  75                        const char *type, const char *function,
  76                        char *file, unsigned int line);
  77
  78 static inline int gfs2_meta_check_i(struct gfs2_sbd *sdp,
  79                                     struct buffer_head *bh,
  80                                     const char *function,
  81                                     char *file, unsigned int line)
  82 {
  83         struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data;
  84         uint32_t magic = mh->mh_magic;
  85         magic = be32_to_cpu(magic);
  86         if (unlikely(magic != GFS2_MAGIC))
  87                 return gfs2_meta_check_ii(sdp, bh, "magic number", function,
  88                                           file, line);
  89         return 0;
  90 }
  91
  92 #define gfs2_meta_check(sdp, bh) \
  93 gfs2_meta_check_i((sdp), (bh), __FUNCTION__, __FILE__, __LINE__)
  94
  95
  96 int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
  97                            uint16_t type, uint16_t t,
  98                            const char *function,
  99                            char *file, unsigned int line);
 100
 101 static inline int gfs2_metatype_check_i(struct gfs2_sbd *sdp,
 102                                         struct buffer_head *bh,
 103                                         uint16_t 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         uint32_t magic = mh->mh_magic;
 109         uint16_t t = be32_to_cpu(mh->mh_type);
 110         magic = be32_to_cpu(magic);
 111         if (unlikely(magic != GFS2_MAGIC))
 112                 return gfs2_meta_check_ii(sdp, bh, "magic number", function,
 113                                           file, line);
 114         if (unlikely(t != type))
 115                 return gfs2_metatype_check_ii(sdp, bh, type, t, function,
 116                                               file, line);
 117         return 0;
 118 }
 119
 120 #define gfs2_metatype_check(sdp, bh, type) \
 121 gfs2_metatype_check_i((sdp), (bh), (type), __FUNCTION__, __FILE__, __LINE__)
 122
 123 static inline void gfs2_metatype_set(struct buffer_head *bh, uint16_t type,
 124                                      uint16_t format)
 125 {
 126         struct gfs2_meta_header *mh;
 127         mh = (struct gfs2_meta_header *)bh->b_data;
 128         mh->mh_type = cpu_to_be32(type);
 129         mh->mh_format = cpu_to_be32(format);
 130 }
 131
 132
 133 int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function,
 134                     char *file, unsigned int line);
 135
 136 #define gfs2_io_error(sdp) \
 137 gfs2_io_error_i((sdp), __FUNCTION__, __FILE__, __LINE__);
 138
 139
 140 int gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh,
 141                        const char *function, char *file, unsigned int line);
 142
 143 #define gfs2_io_error_bh(sdp, bh) \
 144 gfs2_io_error_bh_i((sdp), (bh), __FUNCTION__, __FILE__, __LINE__);
 145
 146
 147 extern kmem_cache_t *gfs2_glock_cachep;
 148 extern kmem_cache_t *gfs2_inode_cachep;
 149 extern kmem_cache_t *gfs2_bufdata_cachep;
 150
 151 static inline unsigned int gfs2_tune_get_i(struct gfs2_tune *gt,
 152                                            unsigned int *p)
 153 {
 154         unsigned int x;
 155         spin_lock(&gt->gt_spin);
 156         x = *p;
 157         spin_unlock(&gt->gt_spin);
 158         return x;
 159 }
 160
 161 #define gfs2_tune_get(sdp, field) \
 162 gfs2_tune_get_i(&(sdp)->sd_tune, &(sdp)->sd_tune.field)
 163
 164 void gfs2_icbit_munge(struct gfs2_sbd *sdp, unsigned char **bitmap,
 165                       unsigned int bit, int new_value);
 166
 167 #endif /* __UTIL_DOT_H__ */
 168