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 /* jornal log entry */ 47 befs_block_run log_blocks; 48 befs_off_t log_start; 49 befs_off_t log_end; 50 51 befs_inode_addr root_dir; 52 befs_inode_addr indices; 53 u32 magic3; 54 55 struct befs_mount_options mount_opts; 56 struct nls_table *nls; 57 }; 58 59 struct befs_inode_info { 60 u32 i_flags; 61 u32 i_type; 62 63 befs_inode_addr i_inode_num; 64 befs_inode_addr i_parent; 65 befs_inode_addr i_attribute; 66 67 union { 68 befs_data_stream ds; 69 char symlink[BEFS_SYMLINK_LEN]; 70 } i_data; 71 72 struct inode vfs_inode; 73 }; 74 75 enum befs_err { 76 BEFS_OK, 77 BEFS_ERR, 78 BEFS_BAD_INODE, 79 BEFS_BT_END, 80 BEFS_BT_EMPTY, 81 BEFS_BT_MATCH, 82 BEFS_BT_PARMATCH, 83 BEFS_BT_NOT_FOUND 84 }; 85 86 87 /****************************/ 88 /* debug.c */ 89 __printf(2, 3) 90 void befs_error(const struct super_block *sb, const char *fmt, ...); 91 __printf(2, 3) 92 void befs_warning(const struct super_block *sb, const char *fmt, ...); 93 __printf(2, 3) 94 void befs_debug(const struct super_block *sb, const char *fmt, ...); 95 96 void befs_dump_super_block(const struct super_block *sb, befs_super_block *); 97 void befs_dump_inode(const struct super_block *sb, befs_inode *); 98 void befs_dump_index_entry(const struct super_block *sb, befs_disk_btree_super *); 99 void befs_dump_index_node(const struct super_block *sb, befs_btree_nodehead *); 100 /****************************/ 101 102 103 /* Gets a pointer to the private portion of the super_block 104 * structure from the public part 105 */ 106 static inline struct befs_sb_info * 107 BEFS_SB(const struct super_block *super) 108 { 109 return (struct befs_sb_info *) super->s_fs_info; 110 } 111 112 static inline struct befs_inode_info * 113 BEFS_I(const struct inode *inode) 114 { 115 return container_of(inode, struct befs_inode_info, vfs_inode); 116 } 117 118 static inline befs_blocknr_t 119 iaddr2blockno(struct super_block *sb, befs_inode_addr * iaddr) 120 { 121 return ((iaddr->allocation_group << BEFS_SB(sb)->ag_shift) + 122 iaddr->start); 123 } 124 125 static inline befs_inode_addr 126 blockno2iaddr(struct super_block *sb, befs_blocknr_t blockno) 127 { 128 befs_inode_addr iaddr; 129 iaddr.allocation_group = blockno >> BEFS_SB(sb)->ag_shift; 130 iaddr.start = 131 blockno - (iaddr.allocation_group << BEFS_SB(sb)->ag_shift); 132 iaddr.len = 1; 133 134 return iaddr; 135 } 136 137 static inline unsigned int 138 befs_iaddrs_per_block(struct super_block *sb) 139 { 140 return BEFS_SB(sb)->block_size / sizeof (befs_disk_inode_addr); 141 } 142 143 static inline int 144 befs_iaddr_is_empty(befs_inode_addr * iaddr) 145 { 146 return (!iaddr->allocation_group) && (!iaddr->start) && (!iaddr->len); 147 } 148 149 static inline size_t 150 befs_brun_size(struct super_block *sb, befs_block_run run) 151 { 152 return BEFS_SB(sb)->block_size * run.len; 153 } 154 155 #include "endian.h" 156 157 #endif /* _LINUX_BEFS_H */ 158