1 /* object based disk file system
3 * This software is licensed under the GPL. See the file COPYING in the
4 * top directory of this distribution for details.
6 * Copyright (C), 1999, Stelias Computing Inc
14 #include <linux/obd_class.h>
15 #include <linux/list.h>
18 void obdfs_read_inode(struct inode *inode);
21 int flushd_init(void);
25 int obdfs_init_wreqcache(void);
26 int obdfs_readpage(struct dentry *dentry, struct page *page);
27 int obdfs_writepage(struct dentry *dentry, struct page *page);
28 struct page *obdfs_getpage(struct inode *inode, unsigned long offset, int create, int locked);
29 int obdfs_write_one_page(struct file *file, struct page *page, unsigned long offset, unsigned long bytes, const char * buf);
32 struct dentry *obdfs_lookup(struct inode * dir, struct dentry *dentry);
33 int obdfs_create (struct inode * dir, struct dentry * dentry, int mode);
34 int obdfs_mkdir(struct inode *dir, struct dentry *dentry, int mode);
35 int obdfs_rmdir(struct inode *dir, struct dentry *dentry);
36 int obdfs_unlink(struct inode *dir, struct dentry *dentry);
37 int obdfs_mknod(struct inode *dir, struct dentry *dentry, int mode, int rdev);
38 int obdfs_symlink(struct inode *dir, struct dentry *dentry, const char *symname);
39 int obdfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry);
40 int obdfs_rename(struct inode *old_dir, struct dentry *old_dentry, struct inode *new_dir, struct dentry *new_dentry);
42 int obdfs_check_dir_entry (const char * function, struct inode * dir,
43 struct ext2_dir_entry_2 * de,
45 unsigned long offset);
47 int obdfs_readlink (struct dentry *, char *, int);
48 struct dentry *obdfs_follow_link(struct dentry *, struct dentry *, unsigned int);
50 struct obdfs_super_entry {
51 struct list_head sl_chain;
52 struct obdfs_sb_info *sbi;
56 struct list_head wb_list; /* linked list of req's */
57 struct inode *wb_inode; /* dentry referenced */
58 struct page *wb_page; /* page to be written */
61 struct obdfs_sb_info {
62 struct obd_conn osi_conn;
63 struct super_block *osi_super;
64 struct obd_device *osi_obd;
65 struct obd_ops *osi_ops;
66 ino_t osi_rootino; /* which root inode */
67 int osi_minor; /* minor of /dev/obdX */
68 struct list_head osi_list; /* linked list of inodes to write */
72 #define WB_NEXT(req) ((struct obdfs_wreq *) ((req)->wb_list.next))
73 /* XXX page list should go on each inode instead of supberblock */
74 #define OBD_LIST(inode) (((struct obdfs_sb_info *)(&(inode)->i_sb->u.generic_sbp))->osi_list)
75 #define WREQ(entry) (list_entry(entry, struct obdfs_wreq, wb_list))
77 void obdfs_sysctl_init(void);
78 void obdfs_sysctl_clean(void);
81 extern struct file_operations obdfs_file_operations;
82 extern struct inode_operations obdfs_file_inode_operations;
83 extern struct inode_operations obdfs_dir_inode_operations;
84 extern struct inode_operations obdfs_symlink_inode_operations;
86 static inline struct obd_ops *iops(struct inode *i)
88 struct obdfs_sb_info *sbi = (struct obdfs_sb_info *) &i->i_sb->u.generic_sbp;
92 static inline struct obd_conn *iid(struct inode *i)
94 struct obdfs_sb_info *sbi = (struct obdfs_sb_info *) &i->i_sb->u.generic_sbp;
95 return &sbi->osi_conn;
102 #warning "*** WARNING redefining OPS"
104 #define OPS(sb,op) ((struct obdfs_sb_info *)(& ## sb ## ->u.generic_sbp))->osi_ops->o_ ## op
105 #define IOPS(inode,op) ((struct obdfs_sb_info *)(& ## inode->i_sb ## ->u.generic_sbp))->osi_ops->o_ ## op
109 #warning "*** WARNING redefining ID"
111 #define ID(sb) (&((struct obdfs_sb_info *)( & ## sb ## ->u.generic_sbp))->osi_conn)
112 #define IID(inode) (&((struct obdfs_sb_info *)( & ## inode->i_sb ## ->u.generic_sbp))->osi_conn)
115 #define OBDFS_SUPER_MAGIC 0x4711