fs/gfs2/util.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
   4  * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
   5  */
   6
   7 #ifndef __UTIL_DOT_H__
   8 #define __UTIL_DOT_H__
   9
  10 #ifdef pr_fmt
  11 #undef pr_fmt
  12 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  13 #endif
  14
  15 #include <linux/mempool.h>
  16
  17 #include "incore.h"
  18
  19 #define fs_emerg(fs, fmt, ...)                                          \
  20         pr_emerg("fsid=%s: " fmt, (fs)->sd_fsname, ##__VA_ARGS__)
  21 #define fs_warn(fs, fmt, ...)                                           \
  22         pr_warn("fsid=%s: " fmt, (fs)->sd_fsname, ##__VA_ARGS__)
  23 #define fs_err(fs, fmt, ...)                                            \
  24         pr_err("fsid=%s: " fmt, (fs)->sd_fsname, ##__VA_ARGS__)
  25 #define fs_info(fs, fmt, ...)                                           \
  26         pr_info("fsid=%s: " fmt, (fs)->sd_fsname, ##__VA_ARGS__)
  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                                         __func__, __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                                         __func__, __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, __func__, __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, __func__, __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, __func__, __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(struct gfs2_sbd *sdp,
  81                                     struct buffer_head *bh)
  82 {
  83         struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data;
  84         u32 magic = be32_to_cpu(mh->mh_magic);
  85         if (unlikely(magic != GFS2_MAGIC)) {
  86                 fs_err(sdp, "Magic number missing at %llu\n",
  87                        (unsigned long long)bh->b_blocknr);
  88                 return -EIO;
  89         }
  90         return 0;
  91 }
  92
  93 int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
  94                            u16 type, u16 t,
  95                            const char *function,
  96                            char *file, unsigned int line);
  97
  98 static inline int gfs2_metatype_check_i(struct gfs2_sbd *sdp,
  99                                         struct buffer_head *bh,
 100                                         u16 type,
 101                                         const char *function,
 102                                         char *file, unsigned int line)
 103 {
 104         struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data;
 105         u32 magic = be32_to_cpu(mh->mh_magic);
 106         u16 t = be32_to_cpu(mh->mh_type);
 107         if (unlikely(magic != GFS2_MAGIC))
 108                 return gfs2_meta_check_ii(sdp, bh, "magic number", function,
 109                                           file, line);
 110         if (unlikely(t != type))
 111                 return gfs2_metatype_check_ii(sdp, bh, type, t, function,
 112                                               file, line);
 113         return 0;
 114 }
 115
 116 #define gfs2_metatype_check(sdp, bh, type) \
 117 gfs2_metatype_check_i((sdp), (bh), (type), __func__, __FILE__, __LINE__)
 118
 119 static inline void gfs2_metatype_set(struct buffer_head *bh, u16 type,
 120                                      u16 format)
 121 {
 122         struct gfs2_meta_header *mh;
 123         mh = (struct gfs2_meta_header *)bh->b_data;
 124         mh->mh_type = cpu_to_be32(type);
 125         mh->mh_format = cpu_to_be32(format);
 126 }
 127
 128
 129 int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function,
 130                     char *file, unsigned int line);
 131
 132 #define gfs2_io_error(sdp) \
 133 gfs2_io_error_i((sdp), __func__, __FILE__, __LINE__);
 134
 135
 136 void gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh,
 137                         const char *function, char *file, unsigned int line,
 138                         bool withdraw);
 139
 140 #define gfs2_io_error_bh_wd(sdp, bh) \
 141 gfs2_io_error_bh_i((sdp), (bh), __func__, __FILE__, __LINE__, true);
 142
 143 #define gfs2_io_error_bh(sdp, bh) \
 144 gfs2_io_error_bh_i((sdp), (bh), __func__, __FILE__, __LINE__, false);
 145
 146
 147 extern struct kmem_cache *gfs2_glock_cachep;
 148 extern struct kmem_cache *gfs2_glock_aspace_cachep;
 149 extern struct kmem_cache *gfs2_inode_cachep;
 150 extern struct kmem_cache *gfs2_bufdata_cachep;
 151 extern struct kmem_cache *gfs2_rgrpd_cachep;
 152 extern struct kmem_cache *gfs2_quotad_cachep;
 153 extern struct kmem_cache *gfs2_qadata_cachep;
 154 extern mempool_t *gfs2_page_pool;
 155 extern struct workqueue_struct *gfs2_control_wq;
 156
 157 static inline unsigned int gfs2_tune_get_i(struct gfs2_tune *gt,
 158                                            unsigned int *p)
 159 {
 160         unsigned int x;
 161         spin_lock(&gt->gt_spin);
 162         x = *p;
 163         spin_unlock(&gt->gt_spin);
 164         return x;
 165 }
 166
 167 /**
 168  * gfs2_withdrawn - test whether the file system is withdrawing or withdrawn
 169  * @sdp: the superblock
 170  */
 171 static inline bool gfs2_withdrawn(struct gfs2_sbd *sdp)
 172 {
 173         return test_bit(SDF_WITHDRAWN, &sdp->sd_flags);
 174 }
 175
 176 #define gfs2_tune_get(sdp, field) \
 177 gfs2_tune_get_i(&(sdp)->sd_tune, &(sdp)->sd_tune.field)
 178
 179 __printf(2, 3)
 180 int gfs2_lm_withdraw(struct gfs2_sbd *sdp, const char *fmt, ...);
 181
 182 #endif /* __UTIL_DOT_H__ */