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 18 typedef u64 befs_blocknr_t; 19 /* 20 * BeFS in memory structures 21 */ 22 23 struct 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 32 struct 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 63 struct 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 79 enum 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) 94 void befs_error(const struct super_block *sb, const char *fmt, ...); 95 __printf(2, 3) 96 void befs_warning(const struct super_block *sb, const char *fmt, ...); 97 __printf(2, 3) 98 void befs_debug(const struct super_block *sb, const char *fmt, ...); 99 100 void befs_dump_super_block(const struct super_block *sb, befs_super_block *); 101 void befs_dump_inode(const struct super_block *sb, befs_inode *); 102 void befs_dump_index_entry(const struct super_block *sb, befs_disk_btree_super *); 103 void 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 */ 110 static inline struct befs_sb_info * BEFS_SB(const struct super_block * super)111 BEFS_SB(const struct super_block *super) 112 { 113 return (struct befs_sb_info *) super->s_fs_info; 114 } 115 116 static inline struct befs_inode_info * BEFS_I(const struct inode * inode)117 BEFS_I(const struct inode *inode) 118 { 119 return container_of(inode, struct befs_inode_info, vfs_inode); 120 } 121 122 static inline befs_blocknr_t iaddr2blockno(struct super_block * sb,const befs_inode_addr * iaddr)123 iaddr2blockno(struct super_block *sb, const befs_inode_addr *iaddr) 124 { 125 return ((iaddr->allocation_group << BEFS_SB(sb)->ag_shift) + 126 iaddr->start); 127 } 128 129 static inline befs_inode_addr blockno2iaddr(struct super_block * sb,befs_blocknr_t blockno)130 blockno2iaddr(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 } 141 142 static inline unsigned int befs_iaddrs_per_block(struct super_block * sb)143 befs_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