1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * lustre/smfs/smfs_internal.h
5 * Lustre filesystem abstraction routines
7 * Copyright (C) 2004 Cluster File Systems, Inc.
9 * This file is part of Lustre, http://www.lustre.org.
11 * Lustre is free software; you can redistribute it and/or
12 * modify it under the terms of version 2 of the GNU General Public
13 * License as published by the Free Software Foundation.
15 * Lustre is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with Lustre; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 #ifndef __LINUX_SMFS_H
25 #define __LINUX_SMFS_H
28 #define SMFSDEV_NAME "/dev/smfsconf"
29 #define SMFS_PSDEV_MINOR 250
30 #define SMFS_PSDEV_MAJOR 10
35 struct list_head list;
38 struct smfs_control_device {
39 struct list_head smfs_dev_list;
42 #define SMFS_TYPE "smfs"
43 #define IOC_SMFS_START _IOWR('s', 41, long)
44 #define IOC_SMFS_STOP _IOWR('s', 42, long)
45 #define IOC_SMFS_REINT _IOWR('s', 43, long)
46 #define IOC_SMFS_UNDO _IOWR('s', 44, long)
50 #define SB_OPS_CHECK 0x1
51 #define INODE_OPS_CHECK 0x2
52 #define FILE_OPS_CHECK 0x4
53 #define DENTRY_OPS_CHECK 0x8
54 #define DEV_OPS_CHECK 0x10
55 #define SYMLINK_OPS_CHECK 0x20
56 #define DIR_OPS_CHECK 0x40
58 #define KML_LOG_NAME "kml_rec"
60 #define MYPATHLEN(buffer, path) ((buffer) + PAGE_SIZE - (path))
63 #define PACK_KML_REC_INIT(buffer, op_code) \
65 int opcode = op_code; \
66 memcpy(buffer, &opcode, sizeof(opcode)); \
67 buffer += sizeof(opcode); \
71 extern int init_smfs_proc_sys(void);
73 extern void sm_set_inode_ops(struct inode *cache_inode, struct inode *inode);
74 extern void sm_set_sb_ops(struct super_block *cache_sb, struct super_block *sb);
75 extern void init_smfs_cache(void);
76 extern void cleanup_smfs_cache(void);
77 extern void sm_set_journal_ops(struct super_block *sb, char *cache_type);
78 extern int smfs_init_sm_ops(struct smfs_super_info *smb);
79 extern void smfs_cleanup_sm_ops(struct smfs_super_info *smb);
81 static inline struct inode_operations *cache_diops(struct smfs_super_info *smb)
83 return &smb->sm_ops->sm_dir_iops;
85 static inline struct inode_operations *cache_fiops(struct smfs_super_info *smb)
87 return &smb->sm_ops->sm_file_iops;
89 static inline struct inode_operations *cache_siops(struct smfs_super_info *smb)
91 return &smb->sm_ops->sm_sym_iops;
93 static inline struct file_operations *cache_dfops(struct smfs_super_info *smb)
95 return &smb->sm_ops->sm_dir_fops;
97 static inline struct file_operations *cache_ffops(struct smfs_super_info *smb)
99 return &smb->sm_ops->sm_file_fops;
101 static inline struct file_operations *cache_sfops(struct smfs_super_info *smb)
103 return &smb->sm_ops->sm_sym_fops;
105 static inline struct dentry_operations *cache_dops(struct smfs_super_info *smb)
107 return &smb->sm_ops->sm_dentry_ops;
109 static inline struct journal_operations *journal_ops(struct smfs_super_info *smb)
111 return &smb->sm_ops->sm_journal_ops;
114 struct smfs_hook_ops *smfs_alloc_hook_ops(char *name,
115 smfs_hook_func pre_hook,
116 smfs_hook_func post_hook);
118 void smfs_free_hook_ops(struct smfs_hook_ops *hops);
119 int smfs_register_hook_ops(struct smfs_super_info *smb,
120 struct smfs_hook_ops *smh_ops);
122 struct smfs_hook_ops *smfs_unregister_hook_ops(struct smfs_super_info *smb,
125 void smfs_put_super(struct super_block *sb);
126 int smfs_fill_super(struct super_block *sb, void *data, int silent);
128 void smfs_cleanup_hooks(struct smfs_super_info *smb);
130 extern int sm_debug_level;
131 extern int sm_inodes;
132 extern long sm_kmemory;
135 extern struct inode_operations smfs_dir_iops;
136 extern struct file_operations smfs_dir_fops;
138 extern struct inode_operations smfs_file_iops;
139 extern struct file_operations smfs_file_fops;
140 extern int smfs_ioctl(struct inode * inode, struct file * filp,
141 unsigned int cmd, unsigned long arg);
142 extern int smfs_fsync(struct file * file, struct dentry *dentry, int datasync);
143 extern int smfs_setattr(struct dentry *dentry, struct iattr *attr);
144 extern int smfs_setxattr(struct dentry *dentry, const char *name,
145 const void *value, size_t size, int flags);
146 extern int smfs_getxattr(struct dentry *dentry, const char *name, void *buffer,
148 extern ssize_t smfs_listxattr(struct dentry *dentry, char *buffer, size_t size);
149 extern int smfs_removexattr(struct dentry *dentry, const char *name);
150 extern int smfs_open(struct inode * inode, struct file * filp);
151 extern int smfs_release(struct inode * inode, struct file * filp);
153 struct inode *smfs_get_inode(struct super_block *sb, ino_t hash,
154 struct inode *dir, int index);
156 extern struct super_operations smfs_super_ops;
158 struct smfs_iget_args {
159 struct inode *s_inode;
164 extern struct inode_operations smfs_sym_iops;
165 extern struct file_operations smfs_sym_fops;
167 void *smfs_trans_start(struct inode *inode, int op, void *desc_private);
168 void smfs_trans_commit(struct inode *inode, void *handle, int force_sync);
170 extern int smfs_post_rec_write(struct inode *dir, struct dentry *dentry,
171 void *data1, void *data2);
172 extern int smfs_post_rec_setattr(struct inode *dir, struct dentry *dentry,
173 void *data1, void *data2);
174 extern int smfs_post_rec_create(struct inode *dir, struct dentry *dentry,
175 void *data1, void *data2);
177 int smfs_do_rec(struct inode *inode);
178 int smfs_rec_cleanup(struct smfs_super_info *sb);
179 int smfs_rec_init(struct super_block *sb);
181 extern int smfs_rec_unpack(struct smfs_proc_args *args, char *record,
182 char **pbuf, int *opcode);
183 extern int smfs_process_rec(struct super_block *sb, int count,
184 char *dir, int flags);
187 int mds_rec_pack_init(struct smfs_super_info *smb);
189 int ost_rec_pack_init(struct smfs_super_info *smb);
192 extern int smfs_llog_setup(struct super_block *sb, struct vfsmount *mnt);
193 extern int smfs_llog_cleanup(struct super_block *sb);
194 extern int smfs_llog_add_rec(struct smfs_super_info * sinfo, void *data,
197 extern int init_smfs_psdev(void);
198 extern void smfs_cleanup_psdev(void);
202 extern int do_cache_manage;
203 struct cache_purge_queue {
204 wait_queue_head_t cpq_waitq;
205 struct super_block *cpq_sb;
206 struct llog_handle *cpq_loghandle;
208 struct completion cpq_comp;
211 #define CACHE_SPACE_INSERT 0x1
212 #define CACHE_SPACE_DELETE 0x2
213 #define CACHE_SPACE_COMMIT 0x4
215 #define CACHE_LRU_LOG "CACHE_LRU_LIST"
217 extern int smfs_cache_hook(struct inode *inode);
218 extern void cache_space_pre(struct inode *inode, int op);
219 extern int cache_space_post(int op, void *handle, struct inode *old_dir,
220 struct dentry *old_dentry, struct inode *new_dir,
221 struct dentry *new_dentry);
223 int cache_space_hook_setup(struct super_block *);
224 int cache_space_hook_cleanup(void);
225 int cache_space_hook_init(struct super_block *sb);
226 int cache_space_hook_exit(struct smfs_super_info *smfs_info);
228 #define XATTR_SMFS_HOARD_MARK "hoard"
229 #define XATTR_SMFS_CACHE_LOGCOOKIE "cache"
230 #define XATTR_SMFS_ACTIVE_ENTRY "entry"
233 static inline int set_hoard_priority(struct inode *inode, void *handle,
236 struct fsfilt_operations *fsops = I2CSB(inode)->sm_fsfilt;
239 rc = fsops->fs_set_xattr(inode, handle, XATTR_SMFS_HOARD_MARK,
240 hoard, sizeof(__u32));
244 static inline int get_hoard_priority(struct inode *inode, __u32 *hoard)
246 struct fsfilt_operations *fsops = I2CSB(inode)->sm_fsfilt;
249 rc = fsops->fs_get_xattr(inode, XATTR_SMFS_HOARD_MARK,
250 hoard, sizeof(__u32));
254 static inline int set_active_entry(struct inode *dir, __u64 *active_entry,
257 struct fsfilt_operations *fsops = I2CSB(dir)->sm_fsfilt;
259 *active_entry = cpu_to_le64(*active_entry);
260 rc = fsops->fs_set_xattr(dir, handle, XATTR_SMFS_ACTIVE_ENTRY,
261 active_entry, sizeof(__u64));
264 static inline int get_active_entry(struct inode *dir, __u64 *active_entry)
266 struct fsfilt_operations *fsops = I2CSB(dir)->sm_fsfilt;
267 int rc = fsops->fs_get_xattr(dir, XATTR_SMFS_ACTIVE_ENTRY,
268 active_entry, sizeof(__u64));
269 *active_entry = le64_to_cpu(*active_entry);
276 int smfs_cow_init(struct super_block *sb);
277 int smfs_cow_cleanup(struct smfs_super_info *smb);
278 int smfs_snap_test_inode(struct inode *inode, void *args);
280 #define SMFS_PRE_COW(dir, dentry, new_dir, new_dentry, op, name, rc, label)
283 #endif /* __LINUX_SMFS_H */