linux/fs/ufs/ufs.h
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   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef _UFS_UFS_H
   3#define _UFS_UFS_H 1
   4
   5#ifdef pr_fmt
   6#undef pr_fmt
   7#endif
   8
   9#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  10
  11#define UFS_MAX_GROUP_LOADED 8
  12#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               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...)    {                                       \
  82                pr_debug("UFSD (%s, %d): %s:",                          \
  83                        __FILE__, __LINE__, __func__);          \
  84                pr_debug(f, ## a);                                      \
  85        }
  86#else
  87#       define UFSD(f, a...)    /**/
  88#endif
  89
  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;
 102extern int ufs_add_link (struct dentry *, struct inode *);
 103extern ino_t ufs_inode_by_name(struct inode *, const struct qstr *);
 104extern int ufs_make_empty(struct inode *, struct inode *);
 105extern struct ufs_dir_entry *ufs_find_entry(struct inode *, const struct qstr *, struct page **);
 106extern int ufs_delete_entry(struct inode *, struct ufs_dir_entry *, struct page *);
 107extern int ufs_empty_dir (struct inode *);
 108extern struct ufs_dir_entry *ufs_dotdot(struct inode *, struct page **);
 109extern void ufs_set_link(struct inode *dir, struct ufs_dir_entry *de,
 110                         struct page *page, struct inode *inode, bool update_times);
 111
 112/* file.c */
 113extern const struct inode_operations ufs_file_inode_operations;
 114extern const struct file_operations ufs_file_operations;
 115extern const struct address_space_operations ufs_aops;
 116
 117/* ialloc.c */
 118extern void ufs_free_inode (struct inode *inode);
 119extern struct inode * ufs_new_inode (struct inode *, umode_t);
 120
 121/* inode.c */
 122extern struct inode *ufs_iget(struct super_block *, unsigned long);
 123extern int ufs_write_inode (struct inode *, struct writeback_control *);
 124extern int ufs_sync_inode (struct inode *);
 125extern void ufs_evict_inode (struct inode *);
 126extern int ufs_setattr(struct dentry *dentry, struct iattr *attr);
 127
 128/* namei.c */
 129extern const struct file_operations ufs_dir_operations;
 130
 131/* super.c */
 132extern __printf(3, 4)
 133void ufs_warning(struct super_block *, const char *, const char *, ...);
 134extern __printf(3, 4)
 135void ufs_error(struct super_block *, const char *, const char *, ...);
 136extern __printf(3, 4)
 137void ufs_panic(struct super_block *, const char *, const char *, ...);
 138void ufs_mark_sb_dirty(struct super_block *sb);
 139
 140static inline struct ufs_sb_info *UFS_SB(struct super_block *sb)
 141{
 142        return sb->s_fs_info;
 143}
 144
 145static 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) */
 155static 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) */
 161static 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 */
 167