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 "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
  28void gfs2_assert_i(struct gfs2_sbd *sdp);
  29
  30#define gfs2_assert(sdp, assertion) \
  31do { \
  32        if (unlikely(!(assertion))) { \
  33                gfs2_assert_i(sdp); \
  34                BUG(); \
  35        } \
  36} while (0)
  37
  38
  39int 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                                        __func__, __FILE__, __LINE__))
  45
  46
  47int 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                                        __func__, __FILE__, __LINE__))
  53
  54
  55int 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) \
  59gfs2_consist_i((sdp), 0, __func__, __FILE__, __LINE__)
  60
  61
  62int 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) \
  66gfs2_consist_inode_i((ip), 0, __func__, __FILE__, __LINE__)
  67
  68
  69int 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) \
  73gfs2_consist_rgrpd_i((rgd), 0, __func__, __FILE__, __LINE__)
  74
  75
  76int 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
  80static 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 = be32_to_cpu(mh->mh_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) \
  94gfs2_meta_check_i((sdp), (bh), __func__, __FILE__, __LINE__)
  95
  96
  97int 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
 102static 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 = be32_to_cpu(mh->mh_magic);
 110        u16 t = be32_to_cpu(mh->mh_type);
 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) \
 121gfs2_metatype_check_i((sdp), (bh), (type), __func__, __FILE__, __LINE__)
 122
 123static inline void gfs2_metatype_set(struct buffer_head *bh, u16 type,
 124                                     u16 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
 133int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function,
 134                    char *file, unsigned int line);
 135
 136#define gfs2_io_error(sdp) \
 137gfs2_io_error_i((sdp), __func__, __FILE__, __LINE__);
 138
 139
 140int 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) \
 144gfs2_io_error_bh_i((sdp), (bh), __func__, __FILE__, __LINE__);
 145
 146
 147extern struct kmem_cache *gfs2_glock_cachep;
 148extern struct kmem_cache *gfs2_inode_cachep;
 149extern struct kmem_cache *gfs2_bufdata_cachep;
 150extern struct kmem_cache *gfs2_rgrpd_cachep;
 151extern struct kmem_cache *gfs2_quotad_cachep;
 152
 153static 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) \
 164gfs2_tune_get_i(&(sdp)->sd_tune, &(sdp)->sd_tune.field)
 165
 166void gfs2_icbit_munge(struct gfs2_sbd *sdp, unsigned char **bitmap,
 167                      unsigned int bit, int new_value);
 168int gfs2_lm_withdraw(struct gfs2_sbd *sdp, char *fmt, ...);
 169
 170#endif /* __UTIL_DOT_H__ */
 171
 172