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gerrit-public.fairphone.software / fp2-dev / kernel / msm / ab4c1424882be9cd70b89abf2b484add355712fa / . / fs / ufs / ufs.h
blob: 11c035168ea6e3c1201ee8f95ed1693c72e566e2 [file] [log] [blame]
Christoph Hellwigbcd6d4e2007-10-16 23:26:51 -0700[diff] [blame]1#ifndef _UFS_UFS_H
2#define _UFS_UFS_H 1
3
4#define UFS_MAX_GROUP_LOADED 8
5#define UFS_CGNO_EMPTY ((unsigned)-1)
6
7struct ufs_sb_private_info;
8struct ufs_cg_private_info;
9struct ufs_csum;
10
11struct ufs_sb_info {
12 struct ufs_sb_private_info * s_uspi;
13 struct ufs_csum * s_csp;
14 unsigned s_bytesex;
15 unsigned s_flags;
16 struct buffer_head ** s_ucg;
17 struct ufs_cg_private_info * s_ucpi[UFS_MAX_GROUP_LOADED];
18 unsigned s_cgno[UFS_MAX_GROUP_LOADED];
19 unsigned short s_cg_loaded;
20 unsigned s_mount_opt;
21};
22
23struct ufs_inode_info {
24 union {
25 __fs32 i_data[15];
26 __u8 i_symlink[4*15];
27 __fs64 u2_i_data[15];
28 } i_u1;
29 __u32 i_flags;
30 __u32 i_shadow;
31 __u32 i_unused1;
32 __u32 i_unused2;
33 __u32 i_oeftflag;
34 __u16 i_osync;
35 __u64 i_lastfrag;
36 __u32 i_dir_start_lookup;
37 struct inode vfs_inode;
38};
39
40/* mount options */
41#define UFS_MOUNT_ONERROR 0x0000000F
42#define UFS_MOUNT_ONERROR_PANIC 0x00000001
43#define UFS_MOUNT_ONERROR_LOCK 0x00000002
44#define UFS_MOUNT_ONERROR_UMOUNT 0x00000004
45#define UFS_MOUNT_ONERROR_REPAIR 0x00000008
46
47#define UFS_MOUNT_UFSTYPE 0x0000FFF0
48#define UFS_MOUNT_UFSTYPE_OLD 0x00000010
49#define UFS_MOUNT_UFSTYPE_44BSD 0x00000020
50#define UFS_MOUNT_UFSTYPE_SUN 0x00000040
51#define UFS_MOUNT_UFSTYPE_NEXTSTEP 0x00000080
52#define UFS_MOUNT_UFSTYPE_NEXTSTEP_CD 0x00000100
53#define UFS_MOUNT_UFSTYPE_OPENSTEP 0x00000200
54#define UFS_MOUNT_UFSTYPE_SUNx86 0x00000400
55#define UFS_MOUNT_UFSTYPE_HP 0x00000800
56#define UFS_MOUNT_UFSTYPE_UFS2 0x00001000
57#define UFS_MOUNT_UFSTYPE_SUNOS 0x00002000
58
59#define ufs_clear_opt(o,opt) o &= ~UFS_MOUNT_##opt
60#define ufs_set_opt(o,opt) o |= UFS_MOUNT_##opt
61#define ufs_test_opt(o,opt) ((o) & UFS_MOUNT_##opt)
62
63/*
64 * Debug code
65 */
66#ifdef CONFIG_UFS_DEBUG
67# define UFSD(f, a...) { \
68 printk ("UFSD (%s, %d): %s:", \
Harvey Harrison97460772008-04-28 02:16:17 -0700[diff] [blame]69 __FILE__, __LINE__, __func__); \
Christoph Hellwigbcd6d4e2007-10-16 23:26:51 -0700[diff] [blame]70 printk (f, ## a); \
71 }
72#else
73# define UFSD(f, a...) /**/
74#endif
75
76/* balloc.c */
77extern void ufs_free_fragments (struct inode *, u64, unsigned);
78extern void ufs_free_blocks (struct inode *, u64, unsigned);
79extern u64 ufs_new_fragments(struct inode *, void *, u64, u64,
80 unsigned, int *, struct page *);
81
82/* cylinder.c */
83extern struct ufs_cg_private_info * ufs_load_cylinder (struct super_block *, unsigned);
84extern void ufs_put_cylinder (struct super_block *, unsigned);
85
86/* dir.c */
87extern const struct inode_operations ufs_dir_inode_operations;
88extern int ufs_add_link (struct dentry *, struct inode *);
89extern ino_t ufs_inode_by_name(struct inode *, struct dentry *);
90extern int ufs_make_empty(struct inode *, struct inode *);
91extern struct ufs_dir_entry *ufs_find_entry(struct inode *, struct dentry *, struct page **);
92extern int ufs_delete_entry(struct inode *, struct ufs_dir_entry *, struct page *);
93extern int ufs_empty_dir (struct inode *);
94extern struct ufs_dir_entry *ufs_dotdot(struct inode *, struct page **);
95extern void ufs_set_link(struct inode *dir, struct ufs_dir_entry *de,
96 struct page *page, struct inode *inode);
97
98/* file.c */
99extern const struct inode_operations ufs_file_inode_operations;
100extern const struct file_operations ufs_file_operations;
101
102extern const struct address_space_operations ufs_aops;
103
104/* ialloc.c */
105extern void ufs_free_inode (struct inode *inode);
106extern struct inode * ufs_new_inode (struct inode *, int);
107
108/* inode.c */
David Howellsb55c4602008-02-07 00:15:48 -0800[diff] [blame]109extern struct inode *ufs_iget(struct super_block *, unsigned long);
Christoph Hellwigbcd6d4e2007-10-16 23:26:51 -0700[diff] [blame]110extern int ufs_write_inode (struct inode *, int);
111extern int ufs_sync_inode (struct inode *);
112extern void ufs_delete_inode (struct inode *);
113extern struct buffer_head * ufs_bread (struct inode *, unsigned, int, int *);
114extern int ufs_getfrag_block (struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create);
115
116/* namei.c */
117extern const struct file_operations ufs_dir_operations;
118
119/* super.c */
120extern void ufs_warning (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4)));
121extern void ufs_error (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4)));
122extern void ufs_panic (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4)));
123
124/* symlink.c */
125extern const struct inode_operations ufs_fast_symlink_inode_operations;
126
127/* truncate.c */
128extern int ufs_truncate (struct inode *, loff_t);
129
130static inline struct ufs_sb_info *UFS_SB(struct super_block *sb)
131{
132 return sb->s_fs_info;
133}
134
135static inline struct ufs_inode_info *UFS_I(struct inode *inode)
136{
137 return container_of(inode, struct ufs_inode_info, vfs_inode);
138}
139
140/*
141 * Give cylinder group number for a file system block.
142 * Give cylinder group block number for a file system block.
143 */
144/* #define ufs_dtog(d) ((d) / uspi->s_fpg) */
145static inline u64 ufs_dtog(struct ufs_sb_private_info * uspi, u64 b)
146{
147 do_div(b, uspi->s_fpg);
148 return b;
149}
150/* #define ufs_dtogd(d) ((d) % uspi->s_fpg) */
151static inline u32 ufs_dtogd(struct ufs_sb_private_info * uspi, u64 b)
152{
153 return do_div(b, uspi->s_fpg);
154}
155
156#endif /* _UFS_UFS_H */