LXR linux/fs/befs/befs.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * befs.h
   4 *
   5 * Copyright (C) 2001-2002 Will Dyson <will_dyson@pobox.com>
   6 * Copyright (C) 1999 Makoto Kato (m_kato@ga2.so-net.ne.jp)
   7 */
   8
   9#ifndef _LINUX_BEFS_H
  10#define _LINUX_BEFS_H
  11
  12#include "befs_fs_types.h"
  13
  14/* used in debug.c */
  15#define BEFS_VERSION "0.9.3"
  16
  17
  18typedef u64 befs_blocknr_t;
  19/*
  20 * BeFS in memory structures
  21 */
  22
  23struct befs_mount_options {
  24        kgid_t gid;
  25        kuid_t uid;
  26        int use_gid;
  27        int use_uid;
  28        int debug;
  29        char *iocharset;
  30};
  31
  32struct befs_sb_info {
  33        u32 magic1;
  34        u32 block_size;
  35        u32 block_shift;
  36        int byte_order;
  37        befs_off_t num_blocks;
  38        befs_off_t used_blocks;
  39        u32 inode_size;
  40        u32 magic2;
  41
  42        /* Allocation group information */
  43        u32 blocks_per_ag;
  44        u32 ag_shift;
  45        u32 num_ags;
  46
  47        /* State of the superblock */
  48        u32 flags;
  49
  50        /* Journal log entry */
  51        befs_block_run log_blocks;
  52        befs_off_t log_start;
  53        befs_off_t log_end;
  54
  55        befs_inode_addr root_dir;
  56        befs_inode_addr indices;
  57        u32 magic3;
  58
  59        struct befs_mount_options mount_opts;
  60        struct nls_table *nls;
  61};
  62
  63struct befs_inode_info {
  64        u32 i_flags;
  65        u32 i_type;
  66
  67        befs_inode_addr i_inode_num;
  68        befs_inode_addr i_parent;
  69        befs_inode_addr i_attribute;
  70
  71        union {
  72                befs_data_stream ds;
  73                char symlink[BEFS_SYMLINK_LEN];
  74        } i_data;
  75
  76        struct inode vfs_inode;
  77};
  78
  79enum befs_err {
  80        BEFS_OK,
  81        BEFS_ERR,
  82        BEFS_BAD_INODE,
  83        BEFS_BT_END,
  84        BEFS_BT_EMPTY,
  85        BEFS_BT_MATCH,
  86        BEFS_BT_OVERFLOW,
  87        BEFS_BT_NOT_FOUND
  88};
  89
  90
  91/****************************/
  92/* debug.c */
  93__printf(2, 3)
  94void befs_error(const struct super_block *sb, const char *fmt, ...);
  95__printf(2, 3)
  96void befs_warning(const struct super_block *sb, const char *fmt, ...);
  97__printf(2, 3)
  98void befs_debug(const struct super_block *sb, const char *fmt, ...);
  99
 100void befs_dump_super_block(const struct super_block *sb, befs_super_block *);
 101void befs_dump_inode(const struct super_block *sb, befs_inode *);
 102void befs_dump_index_entry(const struct super_block *sb, befs_disk_btree_super *);
 103void befs_dump_index_node(const struct super_block *sb, befs_btree_nodehead *);
 104/****************************/
 105
 106
 107/* Gets a pointer to the private portion of the super_block
 108 * structure from the public part
 109 */
 110static inline struct befs_sb_info *
 111BEFS_SB(const struct super_block *super)
 112{
 113        return (struct befs_sb_info *) super->s_fs_info;
 114}
 115
 116static inline struct befs_inode_info *
 117BEFS_I(const struct inode *inode)
 118{
 119        return container_of(inode, struct befs_inode_info, vfs_inode);
 120}
 121
 122static inline befs_blocknr_t
 123iaddr2blockno(struct super_block *sb, const befs_inode_addr *iaddr)
 124{
 125        return ((iaddr->allocation_group << BEFS_SB(sb)->ag_shift) +
 126                iaddr->start);
 127}
 128
 129static inline befs_inode_addr
 130blockno2iaddr(struct super_block *sb, befs_blocknr_t blockno)
 131{
 132        befs_inode_addr iaddr;
 133
 134        iaddr.allocation_group = blockno >> BEFS_SB(sb)->ag_shift;
 135        iaddr.start =
 136            blockno - (iaddr.allocation_group << BEFS_SB(sb)->ag_shift);
 137        iaddr.len = 1;
 138
 139        return iaddr;
 140}
 141
 142static inline unsigned int
 143befs_iaddrs_per_block(struct super_block *sb)
 144{
 145        return BEFS_SB(sb)->block_size / sizeof(befs_disk_inode_addr);
 146}
 147
 148#include "endian.h"
 149
 150#endif                          /* _LINUX_BEFS_H */
 151