xref: /openbmc/linux/fs/ufs/ufs.h (revision 8a0a6c9af053fb93c0edf4581518c77fd131803e)
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  extern int ufs_add_link (struct dentry *, struct inode *);
103  extern ino_t ufs_inode_by_name(struct inode *, const struct qstr *);
104  extern int ufs_make_empty(struct inode *, struct inode *);
105  extern struct ufs_dir_entry *ufs_find_entry(struct inode *, const struct qstr *, struct page **);
106  extern int ufs_delete_entry(struct inode *, struct ufs_dir_entry *, struct page *);
107  extern int ufs_empty_dir (struct inode *);
108  extern struct ufs_dir_entry *ufs_dotdot(struct inode *, struct page **);
109  extern void ufs_set_link(struct inode *dir, struct ufs_dir_entry *de,
110  			 struct page *page, struct inode *inode, bool update_times);
111  
112  /* file.c */
113  extern const struct inode_operations ufs_file_inode_operations;
114  extern const struct file_operations ufs_file_operations;
115  extern const struct address_space_operations ufs_aops;
116  
117  /* ialloc.c */
118  extern void ufs_free_inode (struct inode *inode);
119  extern struct inode * ufs_new_inode (struct inode *, umode_t);
120  
121  /* inode.c */
122  extern struct inode *ufs_iget(struct super_block *, unsigned long);
123  extern int ufs_write_inode (struct inode *, struct writeback_control *);
124  extern int ufs_sync_inode (struct inode *);
125  extern void ufs_evict_inode (struct inode *);
126  extern int ufs_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
127  		       struct iattr *attr);
128  
129  /* namei.c */
130  extern const struct file_operations ufs_dir_operations;
131  
132  /* super.c */
133  extern __printf(3, 4)
134  void ufs_warning(struct super_block *, const char *, const char *, ...);
135  extern __printf(3, 4)
136  void ufs_error(struct super_block *, const char *, const char *, ...);
137  extern __printf(3, 4)
138  void ufs_panic(struct super_block *, const char *, const char *, ...);
139  void ufs_mark_sb_dirty(struct super_block *sb);
140  
141  static inline struct ufs_sb_info *UFS_SB(struct super_block *sb)
142  {
143  	return sb->s_fs_info;
144  }
145  
146  static inline struct ufs_inode_info *UFS_I(struct inode *inode)
147  {
148  	return container_of(inode, struct ufs_inode_info, vfs_inode);
149  }
150  
151  /*
152   * Give cylinder group number for a file system block.
153   * Give cylinder group block number for a file system block.
154   */
155  /* #define	ufs_dtog(d)	((d) / uspi->s_fpg) */
156  static inline u64 ufs_dtog(struct ufs_sb_private_info * uspi, u64 b)
157  {
158  	do_div(b, uspi->s_fpg);
159  	return b;
160  }
161  /* #define	ufs_dtogd(d)	((d) % uspi->s_fpg) */
162  static inline u32 ufs_dtogd(struct ufs_sb_private_info * uspi, u64 b)
163  {
164  	return do_div(b, uspi->s_fpg);
165  }
166  
167  #endif /* _UFS_UFS_H */
168