tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
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
14struct ufs_sb_private_info;
15struct ufs_cg_private_info;
16struct ufs_csum;
17
18struct 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_flavour;
28 unsigned s_on_err;
29 struct super_block *sb;
30 int work_queued; /* non-zero if the delayed work is queued */
31 struct delayed_work sync_work; /* FS sync delayed work */
32 spinlock_t work_lock; /* protects sync_work and work_queued */
33 struct mutex s_lock;
34};
35
36struct ufs_inode_info {
37 union {
38 __fs32 i_data[15];
39 __u8 i_symlink[2 * 4 * 15];
40 __fs64 u2_i_data[15];
41 } i_u1;
42 __u32 i_flags;
43 __u32 i_shadow;
44 __u32 i_unused1;
45 __u32 i_unused2;
46 __u32 i_oeftflag;
47 __u16 i_osync;
48 __u64 i_lastfrag;
49 seqlock_t meta_lock;
50 struct mutex truncate_mutex;
51 __u32 i_dir_start_lookup;
52 struct inode vfs_inode;
53};
54
55/* mount options */
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_OLD 0x00000010
62#define UFS_MOUNT_UFSTYPE_44BSD 0x00000020
63#define UFS_MOUNT_UFSTYPE_SUN 0x00000040
64#define UFS_MOUNT_UFSTYPE_NEXTSTEP 0x00000080
65#define UFS_MOUNT_UFSTYPE_NEXTSTEP_CD 0x00000100
66#define UFS_MOUNT_UFSTYPE_OPENSTEP 0x00000200
67#define UFS_MOUNT_UFSTYPE_SUNx86 0x00000400
68#define UFS_MOUNT_UFSTYPE_HP 0x00000800
69#define UFS_MOUNT_UFSTYPE_UFS2 0x00001000
70#define UFS_MOUNT_UFSTYPE_SUNOS 0x00002000
71
72/*
73 * Debug code
74 */
75#ifdef CONFIG_UFS_DEBUG
76# define UFSD(f, a...) { \
77 pr_debug("UFSD (%s, %d): %s:", \
78 __FILE__, __LINE__, __func__); \
79 pr_debug(f, ## a); \
80 }
81#else
82# define UFSD(f, a...) /**/
83#endif
84
85/* balloc.c */
86void ufs_free_fragments (struct inode *, u64 fragment, unsigned count);
87void ufs_free_blocks (struct inode *, u64 fragment, unsigned count);
88u64 ufs_new_fragments(struct inode *, void *, u64 fragment, u64 goal,
89 unsigned count, int *err, struct folio *);
90
91/* cylinder.c */
92extern struct ufs_cg_private_info * ufs_load_cylinder (struct super_block *, unsigned);
93extern void ufs_put_cylinder (struct super_block *, unsigned);
94
95/* dir.c */
96extern const struct inode_operations ufs_dir_inode_operations;
97
98int ufs_add_link(struct dentry *, struct inode *);
99ino_t ufs_inode_by_name(struct inode *, const struct qstr *);
100int ufs_make_empty(struct inode *, struct inode *);
101struct ufs_dir_entry *ufs_find_entry(struct inode *, const struct qstr *,
102 struct folio **);
103int ufs_delete_entry(struct inode *, struct ufs_dir_entry *, struct folio *);
104int ufs_empty_dir(struct inode *);
105struct ufs_dir_entry *ufs_dotdot(struct inode *, struct folio **);
106int ufs_set_link(struct inode *dir, struct ufs_dir_entry *de,
107 struct folio *folio, struct inode *inode, bool update_times);
108
109/* file.c */
110extern const struct inode_operations ufs_file_inode_operations;
111extern const struct file_operations ufs_file_operations;
112extern const struct address_space_operations ufs_aops;
113
114/* ialloc.c */
115extern void ufs_free_inode (struct inode *inode);
116extern struct inode * ufs_new_inode (struct inode *, umode_t);
117
118/* inode.c */
119extern struct inode *ufs_iget(struct super_block *, unsigned long);
120extern int ufs_write_inode (struct inode *, struct writeback_control *);
121extern int ufs_sync_inode (struct inode *);
122extern void ufs_evict_inode (struct inode *);
123extern int ufs_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
124 struct iattr *attr);
125
126/* namei.c */
127extern const struct file_operations ufs_dir_operations;
128
129/* super.c */
130extern __printf(3, 4)
131void ufs_warning(struct super_block *, const char *, const char *, ...);
132extern __printf(3, 4)
133void ufs_error(struct super_block *, const char *, const char *, ...);
134extern __printf(3, 4)
135void ufs_panic(struct super_block *, const char *, const char *, ...);
136void ufs_mark_sb_dirty(struct super_block *sb);
137
138static inline struct ufs_sb_info *UFS_SB(struct super_block *sb)
139{
140 return sb->s_fs_info;
141}
142
143static inline struct ufs_inode_info *UFS_I(struct inode *inode)
144{
145 return container_of(inode, struct ufs_inode_info, vfs_inode);
146}
147
148/*
149 * Give cylinder group number for a file system block.
150 * Give cylinder group block number for a file system block.
151 */
152/* #define ufs_dtog(d) ((d) / uspi->s_fpg) */
153static inline u64 ufs_dtog(struct ufs_sb_private_info * uspi, u64 b)
154{
155 do_div(b, uspi->s_fpg);
156 return b;
157}
158/* #define ufs_dtogd(d) ((d) % uspi->s_fpg) */
159static inline u32 ufs_dtogd(struct ufs_sb_private_info * uspi, u64 b)
160{
161 return do_div(b, uspi->s_fpg);
162}
163
164#endif /* _UFS_UFS_H */