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_do_writepage(struct inode *, struct page *, int sync);
26 int obdfs_init_pgrqcache(void);
27 void obdfs_cleanup_pgrqcache(void);
28 int obdfs_readpage(struct dentry *dentry, struct page *page);
29 int obdfs_writepage(struct dentry *dentry, struct page *page);
30 struct page *obdfs_getpage(struct inode *inode, unsigned long offset, int create, int locked);
31 int obdfs_write_one_page(struct file *file, struct page *page, unsigned long offset, unsigned long bytes, const char * buf);
34 struct dentry *obdfs_lookup(struct inode * dir, struct dentry *dentry);
35 int obdfs_create (struct inode * dir, struct dentry * dentry, int mode);
36 int obdfs_mkdir(struct inode *dir, struct dentry *dentry, int mode);
37 int obdfs_rmdir(struct inode *dir, struct dentry *dentry);
38 int obdfs_unlink(struct inode *dir, struct dentry *dentry);
39 int obdfs_mknod(struct inode *dir, struct dentry *dentry, int mode, int rdev);
40 int obdfs_symlink(struct inode *dir, struct dentry *dentry, const char *symname);
41 int obdfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry);
42 int obdfs_rename(struct inode *old_dir, struct dentry *old_dentry, struct inode *new_dir, struct dentry *new_dentry);
44 int obdfs_check_dir_entry (const char * function, struct inode * dir,
45 struct ext2_dir_entry_2 * de,
47 unsigned long offset);
49 int obdfs_readlink (struct dentry *, char *, int);
50 struct dentry *obdfs_follow_link(struct dentry *, struct dentry *, unsigned int);
53 /* list of all OBDFS super blocks */
54 struct list_head obdfs_super_list;
55 struct obdfs_super_entry {
56 struct list_head sl_chain;
57 struct obdfs_sb_info *sl_sbi;
61 struct list_head rq_ilist; /* linked list of req's */
62 struct list_head rq_slist; /* linked list of req's */
63 unsigned long rq_jiffies;
64 struct inode *rq_inode; /* dentry referenced */
65 struct page *rq_page; /* page to be written */
67 inline void obdfs_pgrq_del(struct obdfs_pgrq *pgrq);
68 int obdfs_do_vec_wr(struct super_block *sb, obd_count *num_io,
70 struct page **pages, char **bufs, obd_size *counts,
71 obd_off *offsets, obd_flag *flags);
74 struct obdfs_sb_info {
75 struct list_head osi_list; /* list of supers */
76 struct obd_conn osi_conn;
77 struct super_block *osi_super;
78 struct obd_device *osi_obd;
79 struct obd_ops *osi_ops;
80 ino_t osi_rootino; /* which root inode */
81 int osi_minor; /* minor of /dev/obdX */
82 struct list_head osi_pages; /* linked list of inodes to write */
85 struct obdfs_inode_info {
87 struct list_head oi_pages;
88 char oi_inline[OBD_INLINESZ];
92 static inline struct list_head *obdfs_ilist(struct inode *inode)
94 struct obdfs_inode_info *info = (struct obdfs_inode_info *)&inode->u.generic_ip;
96 return &info->oi_pages;
99 static inline struct list_head *obdfs_slist(struct inode *inode) {
100 struct obdfs_sb_info *sbi = (struct obdfs_sb_info *)(&inode->i_sb->u.generic_sbp);
101 return &sbi->osi_pages;
104 #define OBDFS_INFO(inode) ((struct obdfs_inode_info *)(&(inode)->u.generic_ip))
106 void obdfs_sysctl_init(void);
107 void obdfs_sysctl_clean(void);
109 extern struct file_operations obdfs_file_operations;
110 extern struct inode_operations obdfs_file_inode_operations;
111 extern struct inode_operations obdfs_dir_inode_operations;
112 extern struct inode_operations obdfs_symlink_inode_operations;
114 static inline int obdfs_has_inline(struct inode *inode)
116 return (OBDFS_INFO(inode)->oi_flags & OBD_FL_INLINEDATA);
119 static void inline obdfs_from_inode(struct obdo *oa, struct inode *inode)
121 struct obdfs_inode_info *oinfo = OBDFS_INFO(inode);
123 CDEBUG(D_INODE, "inode %ld (%p)\n", inode->i_ino, inode);
124 obdo_from_inode(oa, inode);
125 if (obdfs_has_inline(inode)) {
126 CDEBUG(D_INODE, "inode has inline data\n");
127 memcpy(oa->o_inline, oinfo->oi_inline, OBD_INLINESZ);
128 oa->o_obdflags |= OBD_FL_INLINEDATA;
129 oa->o_valid |= OBD_MD_FLINLINE;
131 } /* obdfs_from_inode */
133 static void inline obdfs_to_inode(struct inode *inode, struct obdo *oa)
135 struct obdfs_inode_info *oinfo = OBDFS_INFO(inode);
137 CDEBUG(D_INODE, "inode %ld (%p)\n", inode->i_ino, inode);
138 obdo_to_inode(inode, oa);
140 if (obdo_has_inline(oa)) {
141 CDEBUG(D_INODE, "obdo has inline data\n");
142 memcpy(oinfo->oi_inline, oa->o_inline, OBD_INLINESZ);
143 oinfo->oi_flags |= OBD_FL_INLINEDATA;
145 } /* obdfs_to_inode */
151 #warning "*** WARNING redefining OPS"
153 #define OPS(sb,op) ((struct obdfs_sb_info *)(& ## sb ## ->u.generic_sbp))->osi_ops->o_ ## op
154 #define IOPS(inode,op) ((struct obdfs_sb_info *)(& ## inode->i_sb ## ->u.generic_sbp))->osi_ops->o_ ## op
158 #warning "*** WARNING redefining ID"
160 #define ID(sb) (&((struct obdfs_sb_info *)( & ## sb ## ->u.generic_sbp))->osi_conn)
161 #define IID(inode) (&((struct obdfs_sb_info *)( & ## inode->i_sb ## ->u.generic_sbp))->osi_conn)
164 #define OBDFS_SUPER_MAGIC 0x4711