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
32 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,10))
39 struct list_head list;
42 struct smfs_control_device {
43 struct list_head smfs_dev_list;
46 #define SMFS_TYPE "smfs"
47 #define IOC_SMFS_START _IOWR('s', 41, long)
48 #define IOC_SMFS_STOP _IOWR('s', 42, long)
49 #define IOC_SMFS_REINT _IOWR('s', 43, long)
50 #define IOC_SMFS_UNDO _IOWR('s', 44, long)
54 #define SB_OPS_CHECK 0x1
55 #define INODE_OPS_CHECK 0x2
56 #define FILE_OPS_CHECK 0x4
57 #define DENTRY_OPS_CHECK 0x8
58 #define DEV_OPS_CHECK 0x10
59 #define SYMLINK_OPS_CHECK 0x20
60 #define DIR_OPS_CHECK 0x40
62 #define MYPATHLEN(buffer, path) ((buffer) + PAGE_SIZE - (path))
64 #define PACK_KML_REC_INIT(buffer, op_code) \
66 int opcode = op_code; \
67 memcpy(buffer, &opcode, sizeof(opcode)); \
68 buffer += sizeof(opcode); \
72 extern int init_smfs_proc_sys(void);
74 extern void sm_set_inode_ops(struct inode *cache_inode, struct inode *inode);
75 extern void sm_set_sb_ops(struct super_block *cache_sb, struct super_block *sb);
76 extern void init_smfs_cache(void);
77 extern void cleanup_smfs_cache(void);
78 extern void sm_set_journal_ops(struct super_block *sb, char *cache_type);
79 extern int smfs_init_sm_ops(struct smfs_super_info *smb);
80 extern void smfs_cleanup_sm_ops(struct smfs_super_info *smb);
82 static inline struct inode_operations *cache_diops(struct smfs_super_info *smb)
84 return &smb->sm_ops->sm_dir_iops;
86 static inline struct inode_operations *cache_fiops(struct smfs_super_info *smb)
88 return &smb->sm_ops->sm_file_iops;
90 static inline struct inode_operations *cache_siops(struct smfs_super_info *smb)
92 return &smb->sm_ops->sm_sym_iops;
94 static inline struct file_operations *cache_dfops(struct smfs_super_info *smb)
96 return &smb->sm_ops->sm_dir_fops;
98 static inline struct file_operations *cache_ffops(struct smfs_super_info *smb)
100 return &smb->sm_ops->sm_file_fops;
102 static inline struct file_operations *cache_sfops(struct smfs_super_info *smb)
104 return &smb->sm_ops->sm_sym_fops;
106 static inline struct dentry_operations *cache_dops(struct smfs_super_info *smb)
108 return &smb->sm_ops->sm_dentry_ops;
110 static inline struct journal_operations *journal_ops(struct smfs_super_info *smb)
112 return &smb->sm_ops->sm_journal_ops;
116 void smfs_put_super(struct super_block *sb);
117 int smfs_fill_super(struct super_block *sb, void *data, int silent);
118 int smfs_post_setup(struct obd_device *, struct vfsmount *, struct dentry *);
119 void smfs_post_cleanup(struct super_block *);
121 extern int sm_debug_level;
122 extern int sm_inodes;
123 extern long sm_kmemory;
126 extern struct inode_operations smfs_dir_iops;
127 extern struct file_operations smfs_dir_fops;
128 extern struct inode_operations smfs_iopen_iops;
129 extern struct file_operations smfs_iopen_fops;
132 extern struct inode_operations smfs_file_iops;
133 extern struct file_operations smfs_file_fops;
134 extern int smfs_ioctl(struct inode * inode, struct file * filp,
135 unsigned int cmd, unsigned long arg);
136 extern int smfs_fsync(struct file * file, struct dentry *dentry, int datasync);
137 extern int smfs_setattr(struct dentry *dentry, struct iattr *attr);
138 extern int smfs_setxattr(struct dentry *dentry, const char *name,
139 const void *value, size_t size, int flags);
140 extern int smfs_getxattr(struct dentry *dentry, const char *name, void *buffer,
142 extern ssize_t smfs_listxattr(struct dentry *dentry, char *buffer, size_t size);
143 extern int smfs_removexattr(struct dentry *dentry, const char *name);
144 extern int smfs_open(struct inode * inode, struct file * filp);
145 extern int smfs_release(struct inode * inode, struct file * filp);
147 struct inode *smfs_get_inode(struct super_block *sb, ino_t hash,
148 struct inode *dir, int index);
150 extern struct super_operations smfs_super_ops;
152 struct smfs_iget_args {
153 struct inode *s_inode;
158 extern struct inode_operations smfs_sym_iops;
159 extern struct file_operations smfs_sym_fops;
161 void *smfs_trans_start(struct inode *inode, int op, void *desc_private);
162 void smfs_trans_commit(struct inode *inode, void *handle, int force_sync);
164 extern int smfs_post_rec_write(struct inode *dir, struct dentry *dentry,
165 void *data1, void *data2);
166 extern int smfs_post_rec_setattr(struct inode *dir, struct dentry *dentry,
167 void *data1, void *data2);
168 extern int smfs_post_rec_create(struct inode *dir, struct dentry *dentry,
169 void *data1, void *data2);
171 int smfs_do_rec(struct inode *inode);
172 int smfs_rec_cleanup(struct smfs_super_info *sb);
173 int smfs_rec_init(struct super_block *sb);
175 extern int smfs_rec_unpack(struct smfs_proc_args *args, char *record,
176 char **pbuf, int *opcode);
177 extern int smfs_process_rec(struct super_block *sb, int count,
178 char *dir, int flags);
181 int mds_rec_pack_init(struct smfs_super_info *smb);
183 int ost_rec_pack_init(struct smfs_super_info *smb);
186 extern int smfs_llog_setup(struct smfs_super_info *);
187 extern int smfs_llog_cleanup(struct smfs_super_info *);
188 extern int smfs_llog_add_rec(struct smfs_super_info *, void *, int);
190 extern int init_smfs_psdev(void);
191 extern void smfs_cleanup_psdev(void);
195 extern int do_cache_manage;
196 struct cache_purge_queue {
197 wait_queue_head_t cpq_waitq;
198 struct super_block *cpq_sb;
199 struct llog_handle *cpq_loghandle;
201 struct completion cpq_comp;
204 #define CACHE_SPACE_INSERT 0x1
205 #define CACHE_SPACE_DELETE 0x2
206 #define CACHE_SPACE_COMMIT 0x4
208 #define CACHE_LRU_LOG "CACHE_LRU_LIST"
210 extern int smfs_cache_hook(struct inode *inode);
211 extern void cache_space_pre(struct inode *inode, int op);
212 extern int cache_space_post(int op, void *handle, struct inode *old_dir,
213 struct dentry *old_dentry, struct inode *new_dir,
214 struct dentry *new_dentry);
216 int cache_space_hook_setup(struct super_block *);
217 int cache_space_hook_cleanup(void);
218 int cache_space_hook_init(struct super_block *sb);
219 int cache_space_hook_exit(struct smfs_super_info *smfs_info);
221 #define XATTR_SMFS_HOARD_MARK "hoard"
222 #define XATTR_SMFS_CACHE_LOGCOOKIE "cache"
223 #define XATTR_SMFS_ACTIVE_ENTRY "entry"
226 static inline int set_hoard_priority(struct inode *inode, void *handle,
229 struct fsfilt_operations *fsops = I2CSB(inode)->sm_fsfilt;
232 rc = fsops->fs_set_xattr(inode, handle, XATTR_SMFS_HOARD_MARK,
233 hoard, sizeof(__u32));
237 static inline int get_hoard_priority(struct inode *inode, __u32 *hoard)
239 struct fsfilt_operations *fsops = I2CSB(inode)->sm_fsfilt;
242 rc = fsops->fs_get_xattr(inode, XATTR_SMFS_HOARD_MARK,
243 hoard, sizeof(__u32));
247 static inline int set_active_entry(struct inode *dir, __u64 *active_entry,
250 struct fsfilt_operations *fsops = I2CSB(dir)->sm_fsfilt;
252 *active_entry = cpu_to_le64(*active_entry);
253 rc = fsops->fs_set_xattr(dir, handle, XATTR_SMFS_ACTIVE_ENTRY,
254 active_entry, sizeof(__u64));
257 static inline int get_active_entry(struct inode *dir, __u64 *active_entry)
259 struct fsfilt_operations *fsops = I2CSB(dir)->sm_fsfilt;
260 int rc = fsops->fs_get_xattr(dir, XATTR_SMFS_ACTIVE_ENTRY,
261 active_entry, sizeof(__u64));
262 *active_entry = le64_to_cpu(*active_entry);
269 int smfs_cow_init(struct super_block *sb);
270 int smfs_cow_cleanup(struct smfs_super_info *smb);
271 int smfs_snap_test_inode(struct inode *inode, void *args);
273 #define SMFS_PRE_COW(dir, dentry, new_dir, new_dentry, op, name, rc, label)
276 #endif /* __LINUX_SMFS_H */