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TOMOYO Linux Cross Reference
Linux/fs/gfs2/util.h

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  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 #define gfs2_tune_get(sdp, field) \
168 gfs2_tune_get_i(&(sdp)->sd_tune, &(sdp)->sd_tune.field)
169 
170 __printf(2, 3)
171 int gfs2_lm_withdraw(struct gfs2_sbd *sdp, const char *fmt, ...);
172 
173 #endif /* __UTIL_DOT_H__ */
174 

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