patch-2.4.15 linux/include/linux/fsfilter.h

• Lines: 130
• Date: Sun Nov 11 10:20:21 2001
• Orig file: v2.4.14/linux/include/linux/fsfilter.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.14/linux/include/linux/fsfilter.h linux/include/linux/fsfilter.h
@@ -0,0 +1,129 @@
+#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 5
+#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
+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   /* print results returned by Venus */
+#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