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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/befs/befs.h | |
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Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'fs/befs/befs.h')
-rw-r--r-- | fs/befs/befs.h | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/fs/befs/befs.h b/fs/befs/befs.h new file mode 100644 index 0000000..057a2c3 --- /dev/null +++ b/fs/befs/befs.h @@ -0,0 +1,154 @@ +/* + * 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 */ |