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/filesystems/unixfs/common/linux/kernel/fs/ufs/ufs.h

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C++ Header | 156 lines | 113 code | 23 blank | 20 comment | 0 complexity | e0988f8fbbbd842c07bf6511db867830 MD5 | raw file
  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:",				\
 69			__FILE__, __LINE__, __func__);		\
 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 */
109extern struct inode *ufs_iget(struct super_block *, unsigned long);
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 */