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, struct page * page,
46 unsigned long offset);
48 int obdfs_readlink (struct dentry *, char *, int);
49 struct dentry *obdfs_follow_link(struct dentry *, struct dentry *, unsigned int);
52 /* list of all OBDFS super blocks */
53 struct list_head obdfs_super_list;
56 struct list_head rq_plist; /* linked list of req's */
57 unsigned long rq_jiffies;
58 struct page *rq_page; /* page to be written */
62 inline void obdfs_pgrq_del(struct obdfs_pgrq *pgrq);
63 int obdfs_do_vec_wr(struct inode **inodes, obd_count num_io, obd_count num_oa,
64 struct obdo **obdos, obd_count *oa_bufs,
65 struct page **pages, char **bufs, obd_size *counts,
66 obd_off *offsets, obd_flag *flags);
69 struct obdfs_sb_info {
70 struct list_head osi_list; /* list of supers */
71 struct obd_conn osi_conn;
72 struct super_block *osi_super;
73 struct obd_device *osi_obd;
74 struct obd_ops *osi_ops;
75 ino_t osi_rootino; /* number of root inode */
76 int osi_minor; /* minor of /dev/obdX */
77 struct list_head osi_inodes; /* list of dirty inodes */
80 struct obdfs_inode_info {
82 struct list_head oi_inodes;
83 struct list_head oi_pages;
84 char oi_inline[OBD_INLINESZ];
87 #define OBDFS_INFO(inode) ((struct obdfs_inode_info *)(&(inode)->u.generic_ip))
89 static inline struct list_head *obdfs_iplist(struct inode *inode)
91 struct obdfs_inode_info *info = (struct obdfs_inode_info *)&inode->u.generic_ip;
93 return &info->oi_pages;
96 static inline struct list_head *obdfs_islist(struct inode *inode)
98 struct obdfs_inode_info *info = (struct obdfs_inode_info *)&inode->u.generic_ip;
100 return &info->oi_inodes;
103 static inline struct list_head *obdfs_slist(struct inode *inode) {
104 struct obdfs_sb_info *sbi = (struct obdfs_sb_info *)(&inode->i_sb->u.generic_sbp);
105 return &sbi->osi_inodes;
108 static inline void obdfs_print_plist(struct inode *inode) {
109 struct list_head *page_list = obdfs_iplist(inode);
110 struct list_head *tmp;
112 CDEBUG(D_INODE, "inode %ld: page", inode->i_ino);
113 if (list_empty(page_list)) {
114 printk(" list empty\n");
119 while ( (tmp = tmp->next) != page_list) {
120 struct obdfs_pgrq *pgrq;
121 pgrq = list_entry(tmp, struct obdfs_pgrq, rq_plist);
122 printk(" %p", pgrq->rq_page);
127 void obdfs_sysctl_init(void);
128 void obdfs_sysctl_clean(void);
130 extern struct file_operations obdfs_file_operations;
131 extern struct inode_operations obdfs_file_inode_operations;
132 extern struct inode_operations obdfs_dir_inode_operations;
133 extern struct inode_operations obdfs_symlink_inode_operations;
135 static inline int obdfs_has_inline(struct inode *inode)
137 return (OBDFS_INFO(inode)->oi_flags & OBD_FL_INLINEDATA);
140 static void inline obdfs_from_inode(struct obdo *oa, struct inode *inode)
142 struct obdfs_inode_info *oinfo = OBDFS_INFO(inode);
144 CDEBUG(D_INODE, "src inode %ld, dst obdo %ld valid 0x%08x\n",
145 inode->i_ino, (long)oa->o_id, oa->o_valid);
146 obdo_from_inode(oa, inode);
147 if (obdfs_has_inline(inode)) {
148 CDEBUG(D_INODE, "copying inline data from inode to obdo\n");
149 memcpy(oa->o_inline, oinfo->oi_inline, OBD_INLINESZ);
150 oa->o_obdflags |= OBD_FL_INLINEDATA;
151 oa->o_valid |= OBD_MD_FLINLINE;
153 } /* obdfs_from_inode */
155 static void inline obdfs_to_inode(struct inode *inode, struct obdo *oa)
157 struct obdfs_inode_info *oinfo = OBDFS_INFO(inode);
159 CDEBUG(D_INODE, "src obdo %ld valid 0x%08x, dst inode %ld\n",
160 (long)oa->o_id, oa->o_valid, inode->i_ino);
161 obdo_to_inode(inode, oa);
163 if (obdo_has_inline(oa)) {
164 CDEBUG(D_INODE, "copying inline data from obdo to inode\n");
165 memcpy(oinfo->oi_inline, oa->o_inline, OBD_INLINESZ);
166 oinfo->oi_flags |= OBD_FL_INLINEDATA;
168 } /* obdfs_to_inode */
174 #warning "*** WARNING redefining OPS"
176 #define OPS(sb,op) ((struct obdfs_sb_info *)(& ## sb ## ->u.generic_sbp))->osi_ops->o_ ## op
177 #define IOPS(inode,op) ((struct obdfs_sb_info *)(& ## inode->i_sb ## ->u.generic_sbp))->osi_ops->o_ ## op
181 #warning "*** WARNING redefining ID"
183 #define ID(sb) (&((struct obdfs_sb_info *)( & ## sb ## ->u.generic_sbp))->osi_conn)
184 #define IID(inode) (&((struct obdfs_sb_info *)( & ## inode->i_sb ## ->u.generic_sbp))->osi_conn)
187 #define OBDFS_SUPER_MAGIC 0x4711