patch-2.4.21 linux-2.4.21/fs/befs/befs.h

• Lines: 153
• Date: 2003-06-13 07:51:37.000000000 -0700
• Orig file: linux-2.4.20/fs/befs/befs.h
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.20/fs/befs/befs.h linux-2.4.21/fs/befs/befs.h
@@ -0,0 +1,152 @@
+/*
+ * befs_fs.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;
+typedef u32 vfs_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;
+
+} 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 *);
+void befs_dump_inode_addr(const struct super_block *sb, befs_inode_addr);
+/****************************/
+
+/* 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->u.generic_sbp;
+}
+
+static inline befs_inode_info *
+BEFS_I(const struct inode *inode)
+{
+	return (befs_inode_info *) inode->u.generic_ip;
+}
+
+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 */