4 * Copyright (C) 2001-2002 Will Dyson <will_dyson@pobox.com>
5 * Copyright (C) 1999 Makoto Kato (m_kato@ga2.so-net.ne.jp)
11 #include "befs_fs_types.h"
14 #define BEFS_VERSION "0.9.3"
16 typedef u64 befs_blocknr_t;
17 typedef u32 vfs_blocknr_t;
20 * BeFS in memory structures
23 typedef struct befs_mount_options {
32 typedef struct befs_sb_info {
37 befs_off_t num_blocks;
38 befs_off_t used_blocks;
42 /* Allocation group information */
47 /* jornal log entry */
48 befs_block_run log_blocks;
52 befs_inode_addr root_dir;
53 befs_inode_addr indices;
56 befs_mount_options mount_opts;
57 struct nls_table *nls;
61 typedef struct befs_inode_info {
65 befs_inode_addr i_inode_num;
66 befs_inode_addr i_parent;
67 befs_inode_addr i_attribute;
71 char symlink[BEFS_SYMLINK_LEN];
87 /****************************/
89 void befs_error(const struct super_block *sb, const char *fmt, ...);
90 void befs_warning(const struct super_block *sb, const char *fmt, ...);
91 void befs_debug(const struct super_block *sb, const char *fmt, ...);
93 void befs_dump_super_block(const struct super_block *sb, befs_super_block *);
94 void befs_dump_inode(const struct super_block *sb, befs_inode *);
95 void befs_dump_index_entry(const struct super_block *sb, befs_btree_super *);
96 void befs_dump_index_node(const struct super_block *sb, befs_btree_nodehead *);
97 void befs_dump_inode_addr(const struct super_block *sb, befs_inode_addr);
98 /****************************/
100 /* Gets a pointer to the private portion of the super_block
101 * structure from the public part
103 static inline befs_sb_info *
104 BEFS_SB(const struct super_block *super)
106 return (befs_sb_info *) super->u.generic_sbp;
109 static inline befs_inode_info *
110 BEFS_I(const struct inode *inode)
112 return (befs_inode_info *) inode->u.generic_ip;
115 static inline befs_blocknr_t
116 iaddr2blockno(struct super_block *sb, befs_inode_addr * iaddr)
118 return ((iaddr->allocation_group << BEFS_SB(sb)->ag_shift) +
122 static inline befs_inode_addr
123 blockno2iaddr(struct super_block *sb, befs_blocknr_t blockno)
125 befs_inode_addr iaddr;
126 iaddr.allocation_group = blockno >> BEFS_SB(sb)->ag_shift;
128 blockno - (iaddr.allocation_group << BEFS_SB(sb)->ag_shift);
134 static inline unsigned int
135 befs_iaddrs_per_block(struct super_block *sb)
137 return BEFS_SB(sb)->block_size / sizeof (befs_inode_addr);
141 befs_iaddr_is_empty(befs_inode_addr * iaddr)
143 return (!iaddr->allocation_group) && (!iaddr->start) && (!iaddr->len);
147 befs_brun_size(struct super_block *sb, befs_block_run run)
149 return BEFS_SB(sb)->block_size * run.len;
152 #endif /* _LINUX_BEFS_H */