1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _UFS_UFS_H
3 #define _UFS_UFS_H 1
4
5 #ifdef pr_fmt
6 #undef pr_fmt
7 #endif
8
9 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
10
11 #define UFS_MAX_GROUP_LOADED 8
12 #define UFS_CGNO_EMPTY ((unsigned)-1)
13
14 struct ufs_sb_private_info;
15 struct ufs_cg_private_info;
16 struct ufs_csum;
17
18 struct ufs_sb_info {
19 struct ufs_sb_private_info * s_uspi;
20 struct ufs_csum * s_csp;
21 unsigned s_bytesex;
22 unsigned s_flags;
23 struct buffer_head ** s_ucg;
24 struct ufs_cg_private_info * s_ucpi[UFS_MAX_GROUP_LOADED];
25 unsigned s_cgno[UFS_MAX_GROUP_LOADED];
26 unsigned short s_cg_loaded;
27 unsigned s_mount_opt;
28 struct super_block *sb;
29 int work_queued; /* non-zero if the delayed work is queued */
30 struct delayed_work sync_work; /* FS sync delayed work */
31 spinlock_t work_lock; /* protects sync_work and work_queued */
32 struct mutex s_lock;
33 };
34
35 struct ufs_inode_info {
36 union {
37 __fs32 i_data[15];
38 __u8 i_symlink[2 * 4 * 15];
39 __fs64 u2_i_data[15];
40 } i_u1;
41 __u32 i_flags;
42 __u32 i_shadow;
43 __u32 i_unused1;
44 __u32 i_unused2;
45 __u32 i_oeftflag;
46 __u16 i_osync;
47 __u64 i_lastfrag;
48 seqlock_t meta_lock;
49 struct mutex truncate_mutex;
50 __u32 i_dir_start_lookup;
51 struct inode vfs_inode;
52 };
53
54 /* mount options */
55 #define UFS_MOUNT_ONERROR 0x0000000F
56 #define UFS_MOUNT_ONERROR_PANIC 0x00000001
57 #define UFS_MOUNT_ONERROR_LOCK 0x00000002
58 #define UFS_MOUNT_ONERROR_UMOUNT 0x00000004
59 #define UFS_MOUNT_ONERROR_REPAIR 0x00000008
60
61 #define UFS_MOUNT_UFSTYPE 0x0000FFF0
62 #define UFS_MOUNT_UFSTYPE_OLD 0x00000010
63 #define UFS_MOUNT_UFSTYPE_44BSD 0x00000020
64 #define UFS_MOUNT_UFSTYPE_SUN 0x00000040
65 #define UFS_MOUNT_UFSTYPE_NEXTSTEP 0x00000080
66 #define UFS_MOUNT_UFSTYPE_NEXTSTEP_CD 0x00000100
67 #define UFS_MOUNT_UFSTYPE_OPENSTEP 0x00000200
68 #define UFS_MOUNT_UFSTYPE_SUNx86 0x00000400
69 #define UFS_MOUNT_UFSTYPE_HP 0x00000800
70 #define UFS_MOUNT_UFSTYPE_UFS2 0x00001000
71 #define UFS_MOUNT_UFSTYPE_SUNOS 0x00002000
72
73 #define ufs_clear_opt(o,opt) o &= ~UFS_MOUNT_##opt
74 #define ufs_set_opt(o,opt) o |= UFS_MOUNT_##opt
75 #define ufs_test_opt(o,opt) ((o) & UFS_MOUNT_##opt)
76
77 /*
78 * Debug code
79 */
80 #ifdef CONFIG_UFS_DEBUG
81 # define UFSD(f, a...) { \
82 pr_debug("UFSD (%s, %d): %s:", \
83 __FILE__, __LINE__, __func__); \
84 pr_debug(f, ## a); \
85 }
86 #else
87 # define UFSD(f, a...) /**/
88 #endif
89
90 /* balloc.c */
91 extern void ufs_free_fragments (struct inode *, u64, unsigned);
92 extern void ufs_free_blocks (struct inode *, u64, unsigned);
93 extern u64 ufs_new_fragments(struct inode *, void *, u64, u64,
94 unsigned, int *, struct page *);
95
96 /* cylinder.c */
97 extern struct ufs_cg_private_info * ufs_load_cylinder (struct super_block *, unsigned);
98 extern void ufs_put_cylinder (struct super_block *, unsigned);
99
100 /* dir.c */
101 extern const struct inode_operations ufs_dir_inode_operations;
102
103 int ufs_add_link(struct dentry *, struct inode *);
104 ino_t ufs_inode_by_name(struct inode *, const struct qstr *);
105 int ufs_make_empty(struct inode *, struct inode *);
106 struct ufs_dir_entry *ufs_find_entry(struct inode *, const struct qstr *,
107 struct folio **);
108 int ufs_delete_entry(struct inode *, struct ufs_dir_entry *, struct folio *);
109 int ufs_empty_dir(struct inode *);
110 struct ufs_dir_entry *ufs_dotdot(struct inode *, struct folio **);
111 void ufs_set_link(struct inode *dir, struct ufs_dir_entry *de,
112 struct folio *folio, struct inode *inode, bool update_times);
113
114 /* file.c */
115 extern const struct inode_operations ufs_file_inode_operations;
116 extern const struct file_operations ufs_file_operations;
117 extern const struct address_space_operations ufs_aops;
118
119 /* ialloc.c */
120 extern void ufs_free_inode (struct inode *inode);
121 extern struct inode * ufs_new_inode (struct inode *, umode_t);
122
123 /* inode.c */
124 extern struct inode *ufs_iget(struct super_block *, unsigned long);
125 extern int ufs_write_inode (struct inode *, struct writeback_control *);
126 extern int ufs_sync_inode (struct inode *);
127 extern void ufs_evict_inode (struct inode *);
128 extern int ufs_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
129 struct iattr *attr);
130
131 /* namei.c */
132 extern const struct file_operations ufs_dir_operations;
133
134 /* super.c */
135 extern __printf(3, 4)
136 void ufs_warning(struct super_block *, const char *, const char *, ...);
137 extern __printf(3, 4)
138 void ufs_error(struct super_block *, const char *, const char *, ...);
139 extern __printf(3, 4)
140 void ufs_panic(struct super_block *, const char *, const char *, ...);
141 void ufs_mark_sb_dirty(struct super_block *sb);
142
UFS_SB(struct super_block * sb)143 static inline struct ufs_sb_info *UFS_SB(struct super_block *sb)
144 {
145 return sb->s_fs_info;
146 }
147
UFS_I(struct inode * inode)148 static inline struct ufs_inode_info *UFS_I(struct inode *inode)
149 {
150 return container_of(inode, struct ufs_inode_info, vfs_inode);
151 }
152
153 /*
154 * Give cylinder group number for a file system block.
155 * Give cylinder group block number for a file system block.
156 */
157 /* #define ufs_dtog(d) ((d) / uspi->s_fpg) */
ufs_dtog(struct ufs_sb_private_info * uspi,u64 b)158 static inline u64 ufs_dtog(struct ufs_sb_private_info * uspi, u64 b)
159 {
160 do_div(b, uspi->s_fpg);
161 return b;
162 }
163 /* #define ufs_dtogd(d) ((d) % uspi->s_fpg) */
ufs_dtogd(struct ufs_sb_private_info * uspi,u64 b)164 static inline u32 ufs_dtogd(struct ufs_sb_private_info * uspi, u64 b)
165 {
166 return do_div(b, uspi->s_fpg);
167 }
168
169 #endif /* _UFS_UFS_H */
170