/* * befs.h * * Copyright (C) 2001-2002 Will Dyson <will_dyson@pobox.com> * Copyright (C) 1999 Makoto Kato (m_kato@ga2.so-net.ne.jp) */ #ifndef _LINUX_BEFS_H #define _LINUX_BEFS_H #include "befs_fs_types.h" /* used in debug.c */ #define BEFS_VERSION "0.9.3" typedef u64 befs_blocknr_t; /* * BeFS in memory structures */ typedef struct befs_mount_options { gid_t gid; uid_t uid; int use_gid; int use_uid; int debug; char *iocharset; } befs_mount_options; typedef struct befs_sb_info { u32 magic1; u32 block_size; u32 block_shift; int byte_order; befs_off_t num_blocks; befs_off_t used_blocks; u32 inode_size; u32 magic2; /* Allocation group information */ u32 blocks_per_ag; u32 ag_shift; u32 num_ags; /* jornal log entry */ befs_block_run log_blocks; befs_off_t log_start; befs_off_t log_end; befs_inode_addr root_dir; befs_inode_addr indices; u32 magic3; befs_mount_options mount_opts; struct nls_table *nls; } befs_sb_info; typedef struct befs_inode_info { u32 i_flags; u32 i_type; befs_inode_addr i_inode_num; befs_inode_addr i_parent; befs_inode_addr i_attribute; union { befs_data_stream ds; char symlink[BEFS_SYMLINK_LEN]; } i_data; struct inode vfs_inode; } befs_inode_info; enum befs_err { BEFS_OK, BEFS_ERR, BEFS_BAD_INODE, BEFS_BT_END, BEFS_BT_EMPTY, BEFS_BT_MATCH, BEFS_BT_PARMATCH, BEFS_BT_NOT_FOUND }; /****************************/ /* debug.c */ void befs_error(const struct super_block *sb, const char *fmt, ...); void befs_warning(const struct super_block *sb, const char *fmt, ...); void befs_debug(const struct super_block *sb, const char *fmt, ...); void befs_dump_super_block(const struct super_block *sb, befs_super_block *); void befs_dump_inode(const struct super_block *sb, befs_inode *); void befs_dump_index_entry(const struct super_block *sb, befs_btree_super *); void befs_dump_index_node(const struct super_block *sb, befs_btree_nodehead *); /****************************/ /* Gets a pointer to the private portion of the super_block * structure from the public part */ static inline befs_sb_info * BEFS_SB(const struct super_block *super) { return (befs_sb_info *) super->s_fs_info; } static inline befs_inode_info * BEFS_I(const struct inode *inode) { return list_entry(inode, struct befs_inode_info, vfs_inode); } static inline befs_blocknr_t iaddr2blockno(struct super_block *sb, befs_inode_addr * iaddr) { return ((iaddr->allocation_group << BEFS_SB(sb)->ag_shift) + iaddr->start); } static inline befs_inode_addr blockno2iaddr(struct super_block *sb, befs_blocknr_t blockno) { befs_inode_addr iaddr; iaddr.allocation_group = blockno >> BEFS_SB(sb)->ag_shift; iaddr.start = blockno - (iaddr.allocation_group << BEFS_SB(sb)->ag_shift); iaddr.len = 1; return iaddr; } static inline unsigned int befs_iaddrs_per_block(struct super_block *sb) { return BEFS_SB(sb)->block_size / sizeof (befs_inode_addr); } static inline int befs_iaddr_is_empty(befs_inode_addr * iaddr) { return (!iaddr->allocation_group) && (!iaddr->start) && (!iaddr->len); } static inline size_t befs_brun_size(struct super_block *sb, befs_block_run run) { return BEFS_SB(sb)->block_size * run.len; } #endif /* _LINUX_BEFS_H */