1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
10 #include <obd_class.h>
11 #include <lustre_mds.h>
12 #include <lustre_mdc.h>
13 #include <lustre_lite.h>
14 #include <lustre_ver.h>
16 #include <sys/types.h>
19 #define PAGE_CACHE_MAXBYTES ((__u64)(~0UL) << PAGE_CACHE_SHIFT)
22 struct obd_client_handle fd_mds_och;
24 struct lustre_handle fd_cwlockh;
29 struct obd_uuid ll_sb_uuid;
30 struct obd_export *ll_md_exp;
31 struct obd_export *ll_dt_exp;
32 struct lu_fid ll_root_fid;
34 struct lustre_client_ocd ll_lco;
35 struct list_head ll_conn_chain;
37 struct obd_uuid ll_mds_uuid;
38 struct obd_uuid ll_mds_peer_uuid;
42 #define LL_SBI_NOLCK 0x1
44 #define LLI_F_HAVE_OST_SIZE_LOCK 0
45 #define LLI_F_HAVE_MDS_SIZE_LOCK 1
47 struct llu_inode_info {
48 struct llu_sb_info *lli_sbi;
49 struct lu_fid lli_fid;
51 struct lov_stripe_md *lli_smd;
52 char *lli_symlink_name;
53 struct semaphore lli_open_sem;
55 unsigned long lli_flags;
58 struct file_identifier lli_sysio_fid;
60 struct lookup_intent *lli_it;
62 /* XXX workaround for libsysio readdir */
65 /* in libsysio we have no chance to store data in file,
66 * so place it here. since it's possible that an file
67 * was opened several times without close, we track an
69 struct ll_file_data *lli_file_data;
73 /* not for stat, change it later */
75 unsigned long lli_st_generation;
78 static inline struct llu_sb_info *llu_fs2sbi(struct filesys *fs)
80 return (struct llu_sb_info*)(fs->fs_private);
83 static inline struct llu_inode_info *llu_i2info(struct inode *inode)
85 return (struct llu_inode_info*)(inode->i_private);
88 static inline struct intnl_stat *llu_i2stat(struct inode *inode)
90 return &inode->i_stbuf;
93 static inline struct llu_sb_info *llu_i2sbi(struct inode *inode)
95 return llu_i2info(inode)->lli_sbi;
98 static inline struct obd_export *llu_i2obdexp(struct inode *inode)
100 return llu_i2info(inode)->lli_sbi->ll_dt_exp;
103 static inline struct obd_export *llu_i2mdcexp(struct inode *inode)
105 return llu_i2info(inode)->lli_sbi->ll_md_exp;
108 static inline int llu_is_root_inode(struct inode *inode)
110 return (fid_seq(&llu_i2info(inode)->lli_fid) ==
111 fid_seq(&llu_i2info(inode)->lli_sbi->ll_root_fid) &&
112 fid_oid(&llu_i2info(inode)->lli_fid) ==
113 fid_oid(&llu_i2info(inode)->lli_sbi->ll_root_fid));
116 #define LL_SAVE_INTENT(inode, it) \
118 struct lookup_intent *temp; \
119 LASSERT(llu_i2info(inode)->lli_it == NULL); \
120 OBD_ALLOC(temp, sizeof(*temp)); \
121 memcpy(temp, it, sizeof(*temp)); \
122 llu_i2info(inode)->lli_it = temp; \
123 CDEBUG(D_DENTRY, "alloc intent %p to inode %p(ino %llu)\n", \
124 temp, inode, (long long)llu_i2stat(inode)->st_ino); \
128 #define LL_GET_INTENT(inode, it) \
130 it = llu_i2info(inode)->lli_it; \
133 llu_i2info(inode)->lli_it = NULL; \
134 CDEBUG(D_DENTRY, "dettach intent %p from inode %p(ino %llu)\n", \
135 it, inode, (long long)llu_i2stat(inode)->st_ino); \
138 /* interpet return codes from intent lookup */
139 #define LL_LOOKUP_POSITIVE 1
140 #define LL_LOOKUP_NEGATIVE 2
142 static inline struct lu_fid *ll_inode2fid(struct inode *inode)
144 LASSERT(inode != NULL);
145 return &llu_i2info(inode)->lli_fid;
149 struct inode *icbd_parent;
150 struct pnode *icbd_child;
154 void ll_i2gids(__u32 *suppgids, struct inode *i1,struct inode *i2);
156 typedef int (*intent_finish_cb)(struct ptlrpc_request *,
157 struct inode *parent, struct pnode *pnode,
158 struct lookup_intent *, int offset, obd_id ino);
159 int llu_intent_lock(struct inode *parent, struct pnode *pnode,
160 struct lookup_intent *, int flags, intent_finish_cb);
162 static inline __u64 ll_file_maxbytes(struct inode *inode)
164 return llu_i2info(inode)->lli_maxbytes;
167 struct mount_option_s
173 #define IS_BAD_PTR(ptr) \
174 ((unsigned long)(ptr) == 0 || (unsigned long)(ptr) > -1000UL)
177 void generate_random_uuid(unsigned char uuid_out[16]);
178 int liblustre_process_log(struct config_llog_instance *cfg, char *mdsnid,
179 char *mdsname, char *profile, int allow_recov);
180 int ll_parse_mount_target(const char *target, char **mdsnid,
181 char **mdsname, char **profile);
183 extern struct mount_option_s mount_option;
186 void llu_update_inode(struct inode *inode, struct mdt_body *body,
187 struct lov_stripe_md *lmm);
188 void obdo_to_inode(struct inode *dst, struct obdo *src, obd_flag valid);
189 void obdo_from_inode(struct obdo *dst, struct inode *src, obd_flag valid);
190 int ll_it_open_error(int phase, struct lookup_intent *it);
191 struct inode *llu_iget(struct filesys *fs, struct lustre_md *md);
192 int llu_inode_getattr(struct inode *inode, struct lov_stripe_md *lsm);
193 int llu_setattr_raw(struct inode *inode, struct iattr *attr);
195 extern struct fssw_ops llu_fssw_ops;
198 void llu_prepare_md_op_data(struct md_op_data *op_data,
204 int llu_create(struct inode *dir, struct pnode_base *pnode, int mode);
205 int llu_iop_open(struct pnode *pnode, int flags, mode_t mode);
206 int llu_mdc_close(struct obd_export *md_exp, struct inode *inode);
207 int llu_iop_close(struct inode *inode);
208 _SYSIO_OFF_T llu_iop_pos(struct inode *ino, _SYSIO_OFF_T off);
209 int llu_vmtruncate(struct inode * inode, loff_t offset, obd_flag obd_flags);
210 void obdo_refresh_inode(struct inode *dst, struct obdo *src, obd_flag valid);
211 int llu_objects_destroy(struct ptlrpc_request *request, struct inode *dir);
214 int llu_iop_read(struct inode *ino, struct ioctx *ioctxp);
215 int llu_iop_write(struct inode *ino, struct ioctx *ioctxp);
216 int llu_iop_iodone(struct ioctx *ioctxp);
217 int llu_glimpse_size(struct inode *inode);
218 int llu_extent_lock(struct ll_file_data *fd, struct inode *inode,
219 struct lov_stripe_md *lsm, int mode,
220 ldlm_policy_data_t *policy, struct lustre_handle *lockh,
222 int llu_extent_unlock(struct ll_file_data *fd, struct inode *inode,
223 struct lov_stripe_md *lsm, int mode,
224 struct lustre_handle *lockh);
227 int llu_iop_lookup(struct pnode *pnode,
229 struct intent *intnt,
231 void unhook_stale_inode(struct pnode *pno);
232 struct inode *llu_inode_from_lock(struct ldlm_lock *lock);
233 int llu_mdc_blocking_ast(struct ldlm_lock *lock,
234 struct ldlm_lock_desc *desc,
235 void *data, int flag);
238 ssize_t llu_iop_filldirentries(struct inode *ino, _SYSIO_OFF_T *basep,
239 char *buf, size_t nbytes);
241 /* liblustre/llite_fid.c*/
242 int llu_fid_md_init(struct llu_sb_info *sbi);
243 int llu_fid_dt_init(struct llu_sb_info *sbi);
245 int llu_fid_md_fini(struct llu_sb_info *sbi);
246 int llu_fid_dt_fini(struct llu_sb_info *sbi);
248 int llu_fid_md_alloc(struct llu_sb_info *sbi, struct lu_fid *fid,
249 struct lu_placement_hint *hint);
251 int llu_fid_dt_alloc(struct llu_sb_info *sbi, struct lu_fid *fid,
252 struct lu_placement_hint *hint);
254 unsigned long llu_fid_build_ino(struct llu_sb_info *sbi,
258 #define EXT2_NAME_LEN (255)
265 char name[EXT2_NAME_LEN];
268 #define EXT2_DIR_PAD 4
269 #define EXT2_DIR_ROUND (EXT2_DIR_PAD - 1)
270 #define EXT2_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT2_DIR_ROUND) & \
273 static inline struct ext2_dirent *ext2_next_entry(struct ext2_dirent *p)
275 return (struct ext2_dirent*)((char*) p + le16_to_cpu(p->rec_len));
278 static inline void inode_init_lvb(struct inode *inode, struct ost_lvb *lvb)
280 struct intnl_stat *st = llu_i2stat(inode);
281 lvb->lvb_size = st->st_size;
282 lvb->lvb_blocks = st->st_blocks;
283 lvb->lvb_mtime = st->st_mtime;
284 lvb->lvb_atime = st->st_atime;
285 lvb->lvb_ctime = st->st_ctime;