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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/befs/befs.h
downloadlwn-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
lwn-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip
Linux-2.6.12-rc2v2.6.12-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.h154
1 files changed, 154 insertions, 0 deletions
diff --git a/fs/befs/befs.h b/fs/befs/befs.h
new file mode 100644
index 000000000000..057a2c3d73b7
--- /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 */