diff options
Diffstat (limited to 'include/linux/efs_fs.h')
| -rw-r--r-- | include/linux/efs_fs.h | 76 |
1 files changed, 53 insertions, 23 deletions
diff --git a/include/linux/efs_fs.h b/include/linux/efs_fs.h index a1a57bdb5..80a41fa2d 100644 --- a/include/linux/efs_fs.h +++ b/include/linux/efs_fs.h @@ -1,12 +1,11 @@ /* * linux/include/linux/efs_fs.h * - * Copyright (C) 1997 - * Mike Shaver (shaver@neon.ingenia.ca) + * Copyright (C) 1997, 1998 Mike Shaver (shaver@netscape.com) * * Based on work Copyright (C) 1995, 1996 Christian Vogelgsang. * - * $Id: efs_fs.h,v 1.1 1997/12/02 02:28:29 ralf Exp $ + * $Id: efs_fs.h,v 1.4 1998/08/25 09:22:46 ralf Exp $ */ #ifndef __LINUX_EFS_FS_H @@ -16,11 +15,11 @@ #include <linux/kernel.h> #include <linux/time.h> #include <linux/stat.h> -#include <linux/fs.h> /* SuperMagic: need a unique Identifier for EFS */ #define EFS_SUPER_MAGIC 0x280273 #define EFS_ROOT_INODE 2 +#define EFS_BLK_VOLDESC 0 #define EFS_BLK_SUPER 1 #define EFS_BLOCK_SIZE 512 @@ -45,7 +44,7 @@ #define EFS_SB_TOGRP 18 /* Number of Groups in Filesystem */ #define EFS_SB_MAGIC 28 -struct efs_super_block { +struct efs_disk_sb { __u32 s_size; __u32 s_firstcg; __u32 s_cgfsize; @@ -68,6 +67,11 @@ struct efs_super_block { __u32 s_checksum; }; +#define EFS_CLEAN 0x0000 /* clean, not mounted */ +#define EFS_ACTIVE 0x7777 /* clean, mounted */ +#define EFS_ACTIVEDIRT 0x0BAD /* dirty when mounted */ +#define EFS_DIRTY 0x1234 /* mounted, then made dirty */ + #ifdef DEBUG void efs_dump_super(struct efs_super_block *); #endif @@ -92,6 +96,8 @@ union efs_extent { __u32 ex_bytes[2]; }; +#define EFS_INODES_PER_BLOCK 4 + struct efs_disk_inode { __u16 di_mode; __u16 di_nlink; @@ -129,7 +135,7 @@ struct efs_dirblk { #define EFS_DI_NAMELEN 4 #define EFS_DI_NAME 5 -struct efs_dent { +struct efs_dir_entry { union { __u32 l; __u16 s[2]; @@ -142,19 +148,47 @@ struct efs_dent { #define EFS_EXT_PER_BLK_MASK 63 #define EFS_EXT_SIZE_BITS 3 +#define EFS_SLOT2OFF(dirblk, slot) \ + (((dirblk)->db_space[(slot)]) << 1) + +#define EFS_DENT4OFF(dirblk, offset) \ + ((struct efs_dir_entry *)((char *)(dirblk) + (offset))) + /* define a few convenient types */ -#if 0 -typedef unsigned char BYTE; /* 8 bit */ -typedef unsigned short SHORT; /* 16 bit */ -typedef unsigned long LONG; /* 32 bit */ +#ifdef __KERNEL__ + +#include <linux/fs.h> + +#ifdef DEBUG_EFS +#define DB(x) printk##x +#else +#define DB(x) do { } while(0); #endif -#ifdef __KERNEL__ +extern int +efs_lookup(struct inode *dir, struct dentry *dentry); + +extern int +efs_bmap(struct inode *inode, int block); + +extern struct buffer_head * +efs_bread(struct inode * inode, int block, int create); + +extern void +efs_put_super(struct super_block *sb); + +extern struct super_block * +efs_read_super(struct super_block *sb, void *data, int silent); + +extern void +efs_read_inode(struct inode *inode); + +extern int +efs_remount(struct super_block *sb, int *flags, char *data); + +extern int +efs_statfs(struct super_block *sb, struct statfs *buf, int bufsiz); -struct efs_dir_entry { - __u16 inode; - char name[0]; -}; /* Byte swapping 32/16-bit quantities into little endian format. */ #define efs_need_swab 0 @@ -177,14 +211,10 @@ extern __inline__ __u16 efs_swab16(__u16 value) int init_efs_fs(void); /* Inode Method structures for Dirs, Files and Symlinks */ -extern struct inode_operations efs_dir_in_ops; -extern struct inode_operations efs_file_in_ops; -extern struct inode_operations efs_symlink_in_ops; - -/* exported Prototypes */ -extern int efs_bmap(struct inode *,int); -extern __u32 ConvertLong(__u8 *buf,int off); -extern __u16 ConvertShort(__u8 *buf,int off); +extern struct inode_operations efs_dir_inode_operations; +extern struct inode_operations efs_file_inode_operations; +extern struct inode_operations efs_symlink_inode_operations; +extern struct dentry_operations efs_dentry_operations; #endif /* __KERNEL__ */ |