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7#ifndef __ZONEFS_H__
8#define __ZONEFS_H__
9
10#include <linux/fs.h>
11#include <linux/magic.h>
12#include <linux/uuid.h>
13#include <linux/mutex.h>
14#include <linux/rwsem.h>
15
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18
19
20
21#define ZONEFS_NAME_MAX 16
22
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26
27
28enum zonefs_ztype {
29 ZONEFS_ZTYPE_CNV,
30 ZONEFS_ZTYPE_SEQ,
31 ZONEFS_ZTYPE_MAX,
32};
33
34static inline enum zonefs_ztype zonefs_zone_type(struct blk_zone *zone)
35{
36 if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL)
37 return ZONEFS_ZTYPE_CNV;
38 return ZONEFS_ZTYPE_SEQ;
39}
40
41#define ZONEFS_ZONE_OPEN (1 << 0)
42
43
44
45
46struct zonefs_inode_info {
47 struct inode i_vnode;
48
49
50 enum zonefs_ztype i_ztype;
51
52
53 sector_t i_zsector;
54
55
56 loff_t i_wpoffset;
57
58
59 loff_t i_max_size;
60
61
62 loff_t i_zone_size;
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76
77 struct mutex i_truncate_mutex;
78
79
80 unsigned int i_wr_refcnt;
81 unsigned int i_flags;
82};
83
84static inline struct zonefs_inode_info *ZONEFS_I(struct inode *inode)
85{
86 return container_of(inode, struct zonefs_inode_info, i_vnode);
87}
88
89
90
91
92#define ZONEFS_LABEL_LEN 64
93#define ZONEFS_UUID_SIZE 16
94#define ZONEFS_SUPER_SIZE 4096
95
96struct zonefs_super {
97
98
99 __le32 s_magic;
100
101
102 __le32 s_crc;
103
104
105 char s_label[ZONEFS_LABEL_LEN];
106
107
108 __u8 s_uuid[ZONEFS_UUID_SIZE];
109
110
111 __le64 s_features;
112
113
114 __le32 s_uid;
115 __le32 s_gid;
116
117
118 __le32 s_perm;
119
120
121 __u8 s_reserved[3988];
122
123} __packed;
124
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128
129
130enum zonefs_features {
131
132
133
134 ZONEFS_F_AGGRCNV = 1ULL << 0,
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138 ZONEFS_F_UID = 1ULL << 1,
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141
142 ZONEFS_F_GID = 1ULL << 2,
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144
145
146 ZONEFS_F_PERM = 1ULL << 3,
147};
148
149#define ZONEFS_F_DEFINED_FEATURES \
150 (ZONEFS_F_AGGRCNV | ZONEFS_F_UID | ZONEFS_F_GID | ZONEFS_F_PERM)
151
152
153
154
155#define ZONEFS_MNTOPT_ERRORS_RO (1 << 0)
156#define ZONEFS_MNTOPT_ERRORS_ZRO (1 << 1)
157#define ZONEFS_MNTOPT_ERRORS_ZOL (1 << 2)
158#define ZONEFS_MNTOPT_ERRORS_REPAIR (1 << 3)
159#define ZONEFS_MNTOPT_ERRORS_MASK \
160 (ZONEFS_MNTOPT_ERRORS_RO | ZONEFS_MNTOPT_ERRORS_ZRO | \
161 ZONEFS_MNTOPT_ERRORS_ZOL | ZONEFS_MNTOPT_ERRORS_REPAIR)
162#define ZONEFS_MNTOPT_EXPLICIT_OPEN (1 << 4)
163
164
165
166
167struct zonefs_sb_info {
168
169 unsigned long s_mount_opts;
170
171 spinlock_t s_lock;
172
173 unsigned long long s_features;
174 kuid_t s_uid;
175 kgid_t s_gid;
176 umode_t s_perm;
177 uuid_t s_uuid;
178 unsigned int s_zone_sectors_shift;
179
180 unsigned int s_nr_files[ZONEFS_ZTYPE_MAX];
181
182 loff_t s_blocks;
183 loff_t s_used_blocks;
184
185 unsigned int s_max_open_zones;
186 atomic_t s_open_zones;
187};
188
189static inline struct zonefs_sb_info *ZONEFS_SB(struct super_block *sb)
190{
191 return sb->s_fs_info;
192}
193
194#define zonefs_info(sb, format, args...) \
195 pr_info("zonefs (%s): " format, sb->s_id, ## args)
196#define zonefs_err(sb, format, args...) \
197 pr_err("zonefs (%s) ERROR: " format, sb->s_id, ## args)
198#define zonefs_warn(sb, format, args...) \
199 pr_warn("zonefs (%s) WARNING: " format, sb->s_id, ## args)
200
201#endif
202