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