mirror of https://gitee.com/openkylin/linux.git
166 lines
5.0 KiB
C
166 lines
5.0 KiB
C
#ifndef _UFS_UFS_H
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#define _UFS_UFS_H 1
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#ifdef pr_fmt
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#undef pr_fmt
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#endif
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#define UFS_MAX_GROUP_LOADED 8
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#define UFS_CGNO_EMPTY ((unsigned)-1)
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struct ufs_sb_private_info;
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struct ufs_cg_private_info;
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struct ufs_csum;
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struct ufs_sb_info {
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struct ufs_sb_private_info * s_uspi;
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struct ufs_csum * s_csp;
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unsigned s_bytesex;
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unsigned s_flags;
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struct buffer_head ** s_ucg;
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struct ufs_cg_private_info * s_ucpi[UFS_MAX_GROUP_LOADED];
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unsigned s_cgno[UFS_MAX_GROUP_LOADED];
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unsigned short s_cg_loaded;
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unsigned s_mount_opt;
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struct super_block *sb;
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int work_queued; /* non-zero if the delayed work is queued */
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struct delayed_work sync_work; /* FS sync delayed work */
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spinlock_t work_lock; /* protects sync_work and work_queued */
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struct mutex s_lock;
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};
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struct ufs_inode_info {
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union {
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__fs32 i_data[15];
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__u8 i_symlink[2 * 4 * 15];
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__fs64 u2_i_data[15];
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} i_u1;
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__u32 i_flags;
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__u32 i_shadow;
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__u32 i_unused1;
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__u32 i_unused2;
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__u32 i_oeftflag;
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__u16 i_osync;
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__u64 i_lastfrag;
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seqlock_t meta_lock;
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struct mutex truncate_mutex;
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__u32 i_dir_start_lookup;
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struct inode vfs_inode;
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};
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/* mount options */
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#define UFS_MOUNT_ONERROR 0x0000000F
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#define UFS_MOUNT_ONERROR_PANIC 0x00000001
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#define UFS_MOUNT_ONERROR_LOCK 0x00000002
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#define UFS_MOUNT_ONERROR_UMOUNT 0x00000004
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#define UFS_MOUNT_ONERROR_REPAIR 0x00000008
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#define UFS_MOUNT_UFSTYPE 0x0000FFF0
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#define UFS_MOUNT_UFSTYPE_OLD 0x00000010
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#define UFS_MOUNT_UFSTYPE_44BSD 0x00000020
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#define UFS_MOUNT_UFSTYPE_SUN 0x00000040
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#define UFS_MOUNT_UFSTYPE_NEXTSTEP 0x00000080
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#define UFS_MOUNT_UFSTYPE_NEXTSTEP_CD 0x00000100
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#define UFS_MOUNT_UFSTYPE_OPENSTEP 0x00000200
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#define UFS_MOUNT_UFSTYPE_SUNx86 0x00000400
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#define UFS_MOUNT_UFSTYPE_HP 0x00000800
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#define UFS_MOUNT_UFSTYPE_UFS2 0x00001000
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#define UFS_MOUNT_UFSTYPE_SUNOS 0x00002000
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#define ufs_clear_opt(o,opt) o &= ~UFS_MOUNT_##opt
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#define ufs_set_opt(o,opt) o |= UFS_MOUNT_##opt
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#define ufs_test_opt(o,opt) ((o) & UFS_MOUNT_##opt)
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/*
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* Debug code
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*/
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#ifdef CONFIG_UFS_DEBUG
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# define UFSD(f, a...) { \
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pr_debug("UFSD (%s, %d): %s:", \
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__FILE__, __LINE__, __func__); \
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pr_debug(f, ## a); \
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}
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#else
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# define UFSD(f, a...) /**/
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#endif
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/* balloc.c */
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extern void ufs_free_fragments (struct inode *, u64, unsigned);
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extern void ufs_free_blocks (struct inode *, u64, unsigned);
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extern u64 ufs_new_fragments(struct inode *, void *, u64, u64,
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unsigned, int *, struct page *);
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/* cylinder.c */
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extern struct ufs_cg_private_info * ufs_load_cylinder (struct super_block *, unsigned);
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extern void ufs_put_cylinder (struct super_block *, unsigned);
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/* dir.c */
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extern const struct inode_operations ufs_dir_inode_operations;
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extern int ufs_add_link (struct dentry *, struct inode *);
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extern ino_t ufs_inode_by_name(struct inode *, const struct qstr *);
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extern int ufs_make_empty(struct inode *, struct inode *);
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extern struct ufs_dir_entry *ufs_find_entry(struct inode *, const struct qstr *, struct page **);
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extern int ufs_delete_entry(struct inode *, struct ufs_dir_entry *, struct page *);
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extern int ufs_empty_dir (struct inode *);
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extern struct ufs_dir_entry *ufs_dotdot(struct inode *, struct page **);
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extern void ufs_set_link(struct inode *dir, struct ufs_dir_entry *de,
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struct page *page, struct inode *inode, bool update_times);
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/* file.c */
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extern const struct inode_operations ufs_file_inode_operations;
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extern const struct file_operations ufs_file_operations;
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extern const struct address_space_operations ufs_aops;
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/* ialloc.c */
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extern void ufs_free_inode (struct inode *inode);
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extern struct inode * ufs_new_inode (struct inode *, umode_t);
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/* inode.c */
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extern struct inode *ufs_iget(struct super_block *, unsigned long);
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extern int ufs_write_inode (struct inode *, struct writeback_control *);
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extern int ufs_sync_inode (struct inode *);
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extern void ufs_evict_inode (struct inode *);
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extern int ufs_setattr(struct dentry *dentry, struct iattr *attr);
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/* namei.c */
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extern const struct file_operations ufs_dir_operations;
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/* super.c */
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extern __printf(3, 4)
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void ufs_warning(struct super_block *, const char *, const char *, ...);
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extern __printf(3, 4)
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void ufs_error(struct super_block *, const char *, const char *, ...);
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extern __printf(3, 4)
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void ufs_panic(struct super_block *, const char *, const char *, ...);
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void ufs_mark_sb_dirty(struct super_block *sb);
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static inline struct ufs_sb_info *UFS_SB(struct super_block *sb)
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{
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return sb->s_fs_info;
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}
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static inline struct ufs_inode_info *UFS_I(struct inode *inode)
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{
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return container_of(inode, struct ufs_inode_info, vfs_inode);
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}
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/*
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* Give cylinder group number for a file system block.
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* Give cylinder group block number for a file system block.
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*/
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/* #define ufs_dtog(d) ((d) / uspi->s_fpg) */
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static inline u64 ufs_dtog(struct ufs_sb_private_info * uspi, u64 b)
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{
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do_div(b, uspi->s_fpg);
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return b;
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}
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/* #define ufs_dtogd(d) ((d) % uspi->s_fpg) */
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static inline u32 ufs_dtogd(struct ufs_sb_private_info * uspi, u64 b)
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{
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return do_div(b, uspi->s_fpg);
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}
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#endif /* _UFS_UFS_H */
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