170 lines · c
1/* SPDX-License-Identifier: GPL-2.0 */2#ifndef _UFS_UFS_H3#define _UFS_UFS_H 14 5#ifdef pr_fmt6#undef pr_fmt7#endif8 9#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt10 11#define UFS_MAX_GROUP_LOADED 812#define UFS_CGNO_EMPTY ((unsigned)-1)13 14struct ufs_sb_private_info;15struct ufs_cg_private_info;16struct ufs_csum;17 18struct 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 35struct 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 0x0000000F56#define UFS_MOUNT_ONERROR_PANIC 0x0000000157#define UFS_MOUNT_ONERROR_LOCK 0x0000000258#define UFS_MOUNT_ONERROR_UMOUNT 0x0000000459#define UFS_MOUNT_ONERROR_REPAIR 0x0000000860 61#define UFS_MOUNT_UFSTYPE 0x0000FFF062#define UFS_MOUNT_UFSTYPE_OLD 0x0000001063#define UFS_MOUNT_UFSTYPE_44BSD 0x0000002064#define UFS_MOUNT_UFSTYPE_SUN 0x0000004065#define UFS_MOUNT_UFSTYPE_NEXTSTEP 0x0000008066#define UFS_MOUNT_UFSTYPE_NEXTSTEP_CD 0x0000010067#define UFS_MOUNT_UFSTYPE_OPENSTEP 0x0000020068#define UFS_MOUNT_UFSTYPE_SUNx86 0x0000040069#define UFS_MOUNT_UFSTYPE_HP 0x0000080070#define UFS_MOUNT_UFSTYPE_UFS2 0x0000100071#define UFS_MOUNT_UFSTYPE_SUNOS 0x0000200072 73#define ufs_clear_opt(o,opt) o &= ~UFS_MOUNT_##opt74#define ufs_set_opt(o,opt) o |= UFS_MOUNT_##opt75#define ufs_test_opt(o,opt) ((o) & UFS_MOUNT_##opt)76 77/*78 * Debug code79 */80#ifdef CONFIG_UFS_DEBUG81# define UFSD(f, a...) { \82 pr_debug("UFSD (%s, %d): %s:", \83 __FILE__, __LINE__, __func__); \84 pr_debug(f, ## a); \85 }86#else87# define UFSD(f, a...) /**/88#endif89 90/* balloc.c */91extern void ufs_free_fragments (struct inode *, u64, unsigned);92extern void ufs_free_blocks (struct inode *, u64, unsigned);93extern u64 ufs_new_fragments(struct inode *, void *, u64, u64,94 unsigned, int *, struct page *);95 96/* cylinder.c */97extern struct ufs_cg_private_info * ufs_load_cylinder (struct super_block *, unsigned);98extern void ufs_put_cylinder (struct super_block *, unsigned);99 100/* dir.c */101extern const struct inode_operations ufs_dir_inode_operations;102 103int ufs_add_link(struct dentry *, struct inode *);104ino_t ufs_inode_by_name(struct inode *, const struct qstr *);105int ufs_make_empty(struct inode *, struct inode *);106struct ufs_dir_entry *ufs_find_entry(struct inode *, const struct qstr *,107 struct folio **);108int ufs_delete_entry(struct inode *, struct ufs_dir_entry *, struct folio *);109int ufs_empty_dir(struct inode *);110struct ufs_dir_entry *ufs_dotdot(struct inode *, struct folio **);111void ufs_set_link(struct inode *dir, struct ufs_dir_entry *de,112 struct folio *folio, struct inode *inode, bool update_times);113 114/* file.c */115extern const struct inode_operations ufs_file_inode_operations;116extern const struct file_operations ufs_file_operations;117extern const struct address_space_operations ufs_aops;118 119/* ialloc.c */120extern void ufs_free_inode (struct inode *inode);121extern struct inode * ufs_new_inode (struct inode *, umode_t);122 123/* inode.c */124extern struct inode *ufs_iget(struct super_block *, unsigned long);125extern int ufs_write_inode (struct inode *, struct writeback_control *);126extern int ufs_sync_inode (struct inode *);127extern void ufs_evict_inode (struct inode *);128extern int ufs_setattr(struct mnt_idmap *idmap, struct dentry *dentry,129 struct iattr *attr);130 131/* namei.c */132extern const struct file_operations ufs_dir_operations;133 134/* super.c */135extern __printf(3, 4)136void ufs_warning(struct super_block *, const char *, const char *, ...);137extern __printf(3, 4)138void ufs_error(struct super_block *, const char *, const char *, ...);139extern __printf(3, 4)140void ufs_panic(struct super_block *, const char *, const char *, ...);141void ufs_mark_sb_dirty(struct super_block *sb);142 143static inline struct ufs_sb_info *UFS_SB(struct super_block *sb)144{145 return sb->s_fs_info;146}147 148static inline struct ufs_inode_info *UFS_I(struct inode *inode)149{150 return container_of(inode, struct ufs_inode_info, vfs_inode);151}152 153/*154 * Give cylinder group number for a file system block.155 * Give cylinder group block number for a file system block.156 */157/* #define ufs_dtog(d) ((d) / uspi->s_fpg) */158static inline u64 ufs_dtog(struct ufs_sb_private_info * uspi, u64 b)159{160 do_div(b, uspi->s_fpg);161 return b;162}163/* #define ufs_dtogd(d) ((d) % uspi->s_fpg) */164static inline u32 ufs_dtogd(struct ufs_sb_private_info * uspi, u64 b)165{166 return do_div(b, uspi->s_fpg);167}168 169#endif /* _UFS_UFS_H */170