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#ifdef pr_fmt
14#undef pr_fmt
15#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
16#endif
17
18#include <linux/mempool.h>
19
20#include "incore.h"
21
22#define fs_emerg(fs, fmt, ...)						\
23	pr_emerg("fsid=%s: " fmt, (fs)->sd_fsname, ##__VA_ARGS__)
24#define fs_warn(fs, fmt, ...)						\
25	pr_warn("fsid=%s: " fmt, (fs)->sd_fsname, ##__VA_ARGS__)
26#define fs_err(fs, fmt, ...)						\
27	pr_err("fsid=%s: " fmt, (fs)->sd_fsname, ##__VA_ARGS__)
28#define fs_info(fs, fmt, ...)						\
29	pr_info("fsid=%s: " fmt, (fs)->sd_fsname, ##__VA_ARGS__)
30
31void gfs2_assert_i(struct gfs2_sbd *sdp);
32
33#define gfs2_assert(sdp, assertion) \
34do { \
35	if (unlikely(!(assertion))) { \
36		gfs2_assert_i(sdp); \
37		BUG(); \
38        } \
39} while (0)
40
41
42int gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion,
43			   const char *function, char *file, unsigned int line);
44
45#define gfs2_assert_withdraw(sdp, assertion) \
46((likely(assertion)) ? 0 : gfs2_assert_withdraw_i((sdp), #assertion, \
47					__func__, __FILE__, __LINE__))
48
49
50int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion,
51		       const char *function, char *file, unsigned int line);
52
53#define gfs2_assert_warn(sdp, assertion) \
54((likely(assertion)) ? 0 : gfs2_assert_warn_i((sdp), #assertion, \
55					__func__, __FILE__, __LINE__))
56
57
58int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide,
59		   const char *function, char *file, unsigned int line);
60
61#define gfs2_consist(sdp) \
62gfs2_consist_i((sdp), 0, __func__, __FILE__, __LINE__)
63
64
65int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide,
66			 const char *function, char *file, unsigned int line);
67
68#define gfs2_consist_inode(ip) \
69gfs2_consist_inode_i((ip), 0, __func__, __FILE__, __LINE__)
70
71
72int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide,
73			 const char *function, char *file, unsigned int line);
74
75#define gfs2_consist_rgrpd(rgd) \
76gfs2_consist_rgrpd_i((rgd), 0, __func__, __FILE__, __LINE__)
77
78
79int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
80		       const char *type, const char *function,
81		       char *file, unsigned int line);
82
83static inline int gfs2_meta_check(struct gfs2_sbd *sdp,
84				    struct buffer_head *bh)
85{
86	struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data;
87	u32 magic = be32_to_cpu(mh->mh_magic);
88	if (unlikely(magic != GFS2_MAGIC)) {
89		pr_err("Magic number missing at %llu\n",
90		       (unsigned long long)bh->b_blocknr);
91		return -EIO;
92	}
93	return 0;
94}
95
96int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
97			   u16 type, u16 t,
98			   const char *function,
99			   char *file, unsigned int line);
100
101static inline int gfs2_metatype_check_i(struct gfs2_sbd *sdp,
102					struct buffer_head *bh,
103					u16 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	u32 magic = be32_to_cpu(mh->mh_magic);
109	u16 t = be32_to_cpu(mh->mh_type);
110	if (unlikely(magic != GFS2_MAGIC))
111		return gfs2_meta_check_ii(sdp, bh, "magic number", function,
112					  file, line);
113        if (unlikely(t != type))
114		return gfs2_metatype_check_ii(sdp, bh, type, t, function,
115					      file, line);
116	return 0;
117}
118
119#define gfs2_metatype_check(sdp, bh, type) \
120gfs2_metatype_check_i((sdp), (bh), (type), __func__, __FILE__, __LINE__)
121
122static inline void gfs2_metatype_set(struct buffer_head *bh, u16 type,
123				     u16 format)
124{
125	struct gfs2_meta_header *mh;
126	mh = (struct gfs2_meta_header *)bh->b_data;
127	mh->mh_type = cpu_to_be32(type);
128	mh->mh_format = cpu_to_be32(format);
129}
130
131
132int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function,
133		    char *file, unsigned int line);
134
135#define gfs2_io_error(sdp) \
136gfs2_io_error_i((sdp), __func__, __FILE__, __LINE__);
137
138
139int gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh,
140		       const char *function, char *file, unsigned int line);
141
142#define gfs2_io_error_bh(sdp, bh) \
143gfs2_io_error_bh_i((sdp), (bh), __func__, __FILE__, __LINE__);
144
145
146extern struct kmem_cache *gfs2_glock_cachep;
147extern struct kmem_cache *gfs2_glock_aspace_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;
152extern struct kmem_cache *gfs2_rsrv_cachep;
153extern mempool_t *gfs2_page_pool;
154
155static inline unsigned int gfs2_tune_get_i(struct gfs2_tune *gt,
156					   unsigned int *p)
157{
158	unsigned int x;
159	spin_lock(&gt->gt_spin);
160	x = *p;
161	spin_unlock(&gt->gt_spin);
162	return x;
163}
164
165#define gfs2_tune_get(sdp, field) \
166gfs2_tune_get_i(&(sdp)->sd_tune, &(sdp)->sd_tune.field)
167
168__printf(2, 3)
169int gfs2_lm_withdraw(struct gfs2_sbd *sdp, const char *fmt, ...);
170
171#endif /* __UTIL_DOT_H__ */
172