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/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*/
#ifndef __FILTER_H_
#define __FILTER_H_ 1
#ifdef __KERNEL__
/* cachetype.c */
/*
* it is important that things like inode, super and file operations
* for intermezzo are not defined statically. If methods are NULL
* the VFS takes special action based on that. Given that different
* cache types have NULL ops at different slots, we must install opeation
* talbes for InterMezzo with NULL's in the same spot
*/
struct filter_ops {
struct super_operations filter_sops;
struct inode_operations filter_dir_iops;
struct inode_operations filter_file_iops;
struct inode_operations filter_sym_iops;
struct file_operations filter_dir_fops;
struct file_operations filter_file_fops;
struct file_operations filter_sym_fops;
struct dentry_operations filter_dentry_ops;
};
struct cache_ops {
/* operations on the file store */
struct super_operations *cache_sops;
struct inode_operations *cache_dir_iops;
struct inode_operations *cache_file_iops;
struct inode_operations *cache_sym_iops;
struct file_operations *cache_dir_fops;
struct file_operations *cache_file_fops;
struct file_operations *cache_sym_fops;
struct dentry_operations *cache_dentry_ops;
};
#define FILTER_DID_SUPER_OPS 0x1
#define FILTER_DID_INODE_OPS 0x2
#define FILTER_DID_FILE_OPS 0x4
#define FILTER_DID_DENTRY_OPS 0x8
#define FILTER_DID_DEV_OPS 0x10
#define FILTER_DID_SYMLINK_OPS 0x20
#define FILTER_DID_DIR_OPS 0x40
struct filter_fs {
int o_flags;
struct filter_ops o_fops;
struct cache_ops o_caops;
struct journal_ops *o_trops;
struct snapshot_ops *o_snops;
};
#define FILTER_FS_TYPES 6
#define FILTER_FS_EXT2 0
#define FILTER_FS_EXT3 1
#define FILTER_FS_REISERFS 2
#define FILTER_FS_XFS 3
#define FILTER_FS_OBDFS 4
#define FILTER_FS_TMPFS 5
extern struct filter_fs filter_oppar[FILTER_FS_TYPES];
struct filter_fs *filter_get_filter_fs(const char *cache_type);
void filter_setup_journal_ops(struct filter_fs *ops, char *cache_type);
inline struct super_operations *filter_c2usops(struct filter_fs *cache);
inline struct inode_operations *filter_c2ufiops(struct filter_fs *cache);
inline struct inode_operations *filter_c2udiops(struct filter_fs *cache);
inline struct inode_operations *filter_c2usiops(struct filter_fs *cache);
inline struct file_operations *filter_c2uffops(struct filter_fs *cache);
inline struct file_operations *filter_c2udfops(struct filter_fs *cache);
inline struct file_operations *filter_c2usfops(struct filter_fs *cache);
inline struct super_operations *filter_c2csops(struct filter_fs *cache);
inline struct inode_operations *filter_c2cfiops(struct filter_fs *cache);
inline struct inode_operations *filter_c2cdiops(struct filter_fs *cache);
inline struct inode_operations *filter_c2csiops(struct filter_fs *cache);
inline struct file_operations *filter_c2cffops(struct filter_fs *cache);
inline struct file_operations *filter_c2cdfops(struct filter_fs *cache);
inline struct file_operations *filter_c2csfops(struct filter_fs *cache);
inline struct dentry_operations *filter_c2cdops(struct filter_fs *cache);
inline struct dentry_operations *filter_c2udops(struct filter_fs *cache);
void filter_setup_super_ops(struct filter_fs *cache, struct super_operations *cache_ops, struct super_operations *filter_sops);
void filter_setup_dir_ops(struct filter_fs *cache, struct inode *cache_inode, struct inode_operations *filter_iops, struct file_operations *ffops);
void filter_setup_file_ops(struct filter_fs *cache, struct inode *cache_inode, struct inode_operations *filter_iops, struct file_operations *filter_op);
void filter_setup_symlink_ops(struct filter_fs *cache, struct inode *cache_inode, struct inode_operations *filter_iops, struct file_operations *filter_op);
void filter_setup_dentry_ops(struct filter_fs *cache, struct dentry_operations *cache_dop, struct dentry_operations *filter_dop);
#define PRESTO_DEBUG
#ifdef PRESTO_DEBUG
/* debugging masks */
#define D_SUPER 1
#define D_INODE 2 /* print entry and exit into procedure */
#define D_FILE 4
#define D_CACHE 8 /* cache debugging */
#define D_MALLOC 16 /* print malloc, de-alloc information */
#define D_JOURNAL 32
#define D_UPCALL 64 /* up and downcall debugging */
#define D_PSDEV 128
#define D_PIOCTL 256
#define D_SPECIAL 512
#define D_TIMING 1024
#define D_DOWNCALL 2048
#define FDEBUG(mask, format, a...) \
do { \
if (filter_debug & mask) { \
printk("(%s,l. %d): ", __FUNCTION__, __LINE__); \
printk(format, ##a); } \
} while (0)
#define FENTRY \
if(filter_print_entry) \
printk("Process %d entered %s\n", current->pid, __FUNCTION__)
#define FEXIT \
if(filter_print_entry) \
printk("Process %d leaving %s at %d\n", current->pid, \
__FUNCTION__,__LINE__)
#endif
#endif
#endif
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