[thirdparty/kernel/linux.git] / fs / ufs / ufs.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _UFS_UFS_H
#define _UFS_UFS_H 1

#ifdef pr_fmt
#undef pr_fmt
#endif

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#define UFS_MAX_GROUP_LOADED 8
#define UFS_CGNO_EMPTY ((unsigned)-1)

struct ufs_sb_private_info;
struct ufs_cg_private_info;
struct ufs_csum;

struct ufs_sb_info {
	struct ufs_sb_private_info * s_uspi;
	struct ufs_csum	* s_csp;
	unsigned s_bytesex;
	unsigned s_flags;
	struct buffer_head ** s_ucg;
	struct ufs_cg_private_info * s_ucpi[UFS_MAX_GROUP_LOADED];
	unsigned s_cgno[UFS_MAX_GROUP_LOADED];
	unsigned short s_cg_loaded;
	unsigned s_mount_opt;
	struct super_block *sb;
	int work_queued; /* non-zero if the delayed work is queued */
	struct delayed_work sync_work; /* FS sync delayed work */
	spinlock_t work_lock; /* protects sync_work and work_queued */
	struct mutex s_lock;
};

struct ufs_inode_info {
	union {
		__fs32	i_data[15];
		__u8	i_symlink[2 * 4 * 15];
		__fs64	u2_i_data[15];
	} i_u1;
	__u32	i_flags;
	__u32	i_shadow;
	__u32	i_unused1;
	__u32	i_unused2;
	__u32	i_oeftflag;
	__u16	i_osync;
	__u64	i_lastfrag;
	seqlock_t meta_lock;
	struct mutex	truncate_mutex;
	__u32   i_dir_start_lookup;
	struct inode vfs_inode;
};

/* mount options */
#define UFS_MOUNT_ONERROR		0x0000000F
#define UFS_MOUNT_ONERROR_PANIC		0x00000001
#define UFS_MOUNT_ONERROR_LOCK		0x00000002
#define UFS_MOUNT_ONERROR_UMOUNT	0x00000004
#define UFS_MOUNT_ONERROR_REPAIR	0x00000008

#define UFS_MOUNT_UFSTYPE		0x0000FFF0
#define UFS_MOUNT_UFSTYPE_OLD		0x00000010
#define UFS_MOUNT_UFSTYPE_44BSD		0x00000020
#define UFS_MOUNT_UFSTYPE_SUN		0x00000040
#define UFS_MOUNT_UFSTYPE_NEXTSTEP	0x00000080
#define UFS_MOUNT_UFSTYPE_NEXTSTEP_CD	0x00000100
#define UFS_MOUNT_UFSTYPE_OPENSTEP	0x00000200
#define UFS_MOUNT_UFSTYPE_SUNx86	0x00000400
#define UFS_MOUNT_UFSTYPE_HP	        0x00000800
#define UFS_MOUNT_UFSTYPE_UFS2		0x00001000
#define UFS_MOUNT_UFSTYPE_SUNOS		0x00002000

#define ufs_clear_opt(o,opt)	o &= ~UFS_MOUNT_##opt
#define ufs_set_opt(o,opt)	o |= UFS_MOUNT_##opt
#define ufs_test_opt(o,opt)	((o) & UFS_MOUNT_##opt)

/*
 * Debug code
 */
#ifdef CONFIG_UFS_DEBUG
#	define UFSD(f, a...)	{					\
		pr_debug("UFSD (%s, %d): %s:",				\
			__FILE__, __LINE__, __func__);		\
		pr_debug(f, ## a);					\
	}
#else
#	define UFSD(f, a...)	/**/
#endif

/* balloc.c */
extern void ufs_free_fragments (struct inode *, u64, unsigned);
extern void ufs_free_blocks (struct inode *, u64, unsigned);
extern u64 ufs_new_fragments(struct inode *, void *, u64, u64,
			     unsigned, int *, struct page *);

/* cylinder.c */
extern struct ufs_cg_private_info * ufs_load_cylinder (struct super_block *, unsigned);
extern void ufs_put_cylinder (struct super_block *, unsigned);

/* dir.c */
extern const struct inode_operations ufs_dir_inode_operations;
extern int ufs_add_link (struct dentry *, struct inode *);
extern ino_t ufs_inode_by_name(struct inode *, const struct qstr *);
extern int ufs_make_empty(struct inode *, struct inode *);
extern struct ufs_dir_entry *ufs_find_entry(struct inode *, const struct qstr *, struct page **);
extern int ufs_delete_entry(struct inode *, struct ufs_dir_entry *, struct page *);
extern int ufs_empty_dir (struct inode *);
extern struct ufs_dir_entry *ufs_dotdot(struct inode *, struct page **);
extern void ufs_set_link(struct inode *dir, struct ufs_dir_entry *de,
			 struct page *page, struct inode *inode, bool update_times);

/* file.c */
extern const struct inode_operations ufs_file_inode_operations;
extern const struct file_operations ufs_file_operations;
extern const struct address_space_operations ufs_aops;

/* ialloc.c */
extern void ufs_free_inode (struct inode *inode);
extern struct inode * ufs_new_inode (struct inode *, umode_t);

/* inode.c */
extern struct inode *ufs_iget(struct super_block *, unsigned long);
extern int ufs_write_inode (struct inode *, struct writeback_control *);
extern int ufs_sync_inode (struct inode *);
extern void ufs_evict_inode (struct inode *);
extern int ufs_setattr(struct dentry *dentry, struct iattr *attr);

/* namei.c */
extern const struct file_operations ufs_dir_operations;

/* super.c */
extern __printf(3, 4)
void ufs_warning(struct super_block *, const char *, const char *, ...);
extern __printf(3, 4)
void ufs_error(struct super_block *, const char *, const char *, ...);
extern __printf(3, 4)
void ufs_panic(struct super_block *, const char *, const char *, ...);
void ufs_mark_sb_dirty(struct super_block *sb);

static inline struct ufs_sb_info *UFS_SB(struct super_block *sb)
{
	return sb->s_fs_info;
}

static inline struct ufs_inode_info *UFS_I(struct inode *inode)
{
	return container_of(inode, struct ufs_inode_info, vfs_inode);
}

/*
 * Give cylinder group number for a file system block.
 * Give cylinder group block number for a file system block.
 */
/* #define	ufs_dtog(d)	((d) / uspi->s_fpg) */
static inline u64 ufs_dtog(struct ufs_sb_private_info * uspi, u64 b)
{
	do_div(b, uspi->s_fpg);
	return b;
}
/* #define	ufs_dtogd(d)	((d) % uspi->s_fpg) */
static inline u32 ufs_dtogd(struct ufs_sb_private_info * uspi, u64 b)
{
	return do_div(b, uspi->s_fpg);
}

#endif /* _UFS_UFS_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
bcd6d4ec CH	2	#ifndef _UFS_UFS_H
	3	#define _UFS_UFS_H 1
	4
de771bda FF	5	#ifdef pr_fmt
	6	#undef pr_fmt
	7	#endif
	8
	9	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
	10
bcd6d4ec CH	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;
9e9ad5f4 AB	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 */
cdd9eefd	32	struct mutex s_lock;
bcd6d4ec CH	33	};
	34
	35	struct ufs_inode_info {
	36	union {
	37	__fs32 i_data[15];
f33219b7	38	__u8 i_symlink[2 * 4 * 15];
bcd6d4ec CH	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;
724bb09f AV	48	seqlock_t meta_lock;
724bb09f AV	49	struct mutex truncate_mutex;
bcd6d4ec CH	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...) { \
d4beaabd	82	pr_debug("UFSD (%s, %d): %s:", \
9746077a	83	__FILE__, __LINE__, __func__); \
d4beaabd	84	pr_debug(f, ## a); \
bcd6d4ec CH	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 );
89031bc7	103	extern ino_t ufs_inode_by_name(struct inode , const struct qstr );
bcd6d4ec	104	extern int ufs_make_empty(struct inode , struct inode );
89031bc7	105	extern struct ufs_dir_entry ufs_find_entry(struct inode , const struct qstr , struct page *);
bcd6d4ec CH	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,
70d45cdb	110	struct page page, struct inode inode, bool update_times);
bcd6d4ec CH	111
	112	/* file.c */
	113	extern const struct inode_operations ufs_file_inode_operations;
	114	extern const struct file_operations ufs_file_operations;
bcd6d4ec CH	115	extern const struct address_space_operations ufs_aops;
	116
	117	/* ialloc.c */
	118	extern void ufs_free_inode (struct inode *inode);
6a9a06d9	119	extern struct inode * ufs_new_inode (struct inode *, umode_t);
bcd6d4ec CH	120
bcd6d4ec CH	121	/* inode.c */
b55c460d	122	extern struct inode ufs_iget(struct super_block , unsigned long);
a9185b41	123	extern int ufs_write_inode (struct inode , struct writeback_control );
bcd6d4ec	124	extern int ufs_sync_inode (struct inode *);
58e8268c	125	extern void ufs_evict_inode (struct inode *);
010d331f	126	extern int ufs_setattr(struct dentry dentry, struct iattr attr);
bcd6d4ec CH	127
	128	/* namei.c */
	129	extern const struct file_operations ufs_dir_operations;
	130
	131	/* super.c */
b9075fa9 JP	132	extern __printf(3, 4)
	133	void ufs_warning(struct super_block , const char , const char *, ...);
	134	extern __printf(3, 4)
	135	void ufs_error(struct super_block , const char , const char *, ...);
	136	extern __printf(3, 4)
	137	void ufs_panic(struct super_block , const char , const char *, ...);
9e9ad5f4	138	void ufs_mark_sb_dirty(struct super_block *sb);
bcd6d4ec	139
bcd6d4ec CH	140	static inline struct ufs_sb_info UFS_SB(struct super_block sb)
	141	{
	142	return sb->s_fs_info;
	143	}
	144
	145	static inline struct ufs_inode_info UFS_I(struct inode inode)
	146	{
	147	return container_of(inode, struct ufs_inode_info, vfs_inode);
	148	}
	149
	150	/*
	151	* Give cylinder group number for a file system block.
	152	* Give cylinder group block number for a file system block.
	153	*/
	154	/* #define ufs_dtog(d) ((d) / uspi->s_fpg) */
	155	static inline u64 ufs_dtog(struct ufs_sb_private_info * uspi, u64 b)
	156	{
	157	do_div(b, uspi->s_fpg);
	158	return b;
	159	}
	160	/* #define ufs_dtogd(d) ((d) % uspi->s_fpg) */
	161	static inline u32 ufs_dtogd(struct ufs_sb_private_info * uspi, u64 b)
	162	{
	163	return do_div(b, uspi->s_fpg);
	164	}
	165
	166	#endif /* _UFS_UFS_H */