4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2012, 2013, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
57 #include <libcfs/libcfs.h>
58 #include <lustre/lustre_idl.h>
60 #include <lustre_lib.h>
61 #include <lustre_lite.h>
65 /* This should not be "optimized" use ~0ULL because page->index is a long and
66 * 32-bit systems are therefore limited to 16TB in a mapping */
67 #define MAX_LFS_FILESIZE ((__u64)(~0UL) << PAGE_CACHE_SHIFT)
69 struct obd_client_handle fd_mds_och;
71 struct ccc_grouplock fd_grouplock;
75 struct obd_uuid ll_sb_uuid;
76 struct obd_export *ll_md_exp;
77 struct obd_export *ll_dt_exp;
78 struct lu_fid ll_root_fid;
79 struct lustre_client_ocd ll_lco;
80 cfs_list_t ll_conn_chain;
81 struct lu_site *ll_site;
82 struct cl_device *ll_cl;
86 /* MDS has an authority for the Size-on-MDS attributes. */
87 LLIF_MDS_SIZE_LOCK = (1 << 0),
90 struct llu_inode_info {
91 struct llu_sb_info *lli_sbi;
92 struct lu_fid lli_fid;
94 char *lli_symlink_name;
96 unsigned long lli_flags;
100 struct file_identifier lli_sysio_fid;
102 struct lookup_intent *lli_it;
104 /* XXX workaround for libsysio readdir */
107 /* in libsysio we have no chance to store data in file,
108 * so place it here. since it's possible that an file
109 * was opened several times without close, we track an
111 struct ll_file_data *lli_file_data;
112 /* checking lli_has_smd is reliable only inside an IO
113 * i.e, lov stripe has been held. */
118 /* not for stat, change it later */
120 unsigned long lli_st_generation;
121 struct cl_object *lli_clob;
122 /* the most recent timestamps obtained from mds */
123 struct ost_lvb lli_lvb;
126 static inline struct llu_sb_info *llu_fs2sbi(struct filesys *fs)
128 return (struct llu_sb_info*)(fs->fs_private);
131 static inline struct llu_inode_info *llu_i2info(struct inode *inode)
133 return (struct llu_inode_info*)(inode->i_private);
136 static inline int ll_inode_flags(struct inode *inode)
138 return llu_i2info(inode)->lli_st_flags;
141 static inline struct intnl_stat *llu_i2stat(struct inode *inode)
143 return &inode->i_stbuf;
146 #define ll_inode_blksize(inode) (llu_i2stat(inode)->st_blksize)
148 static inline struct llu_sb_info *llu_i2sbi(struct inode *inode)
150 return llu_i2info(inode)->lli_sbi;
153 static inline struct obd_export *llu_i2obdexp(struct inode *inode)
155 return llu_i2info(inode)->lli_sbi->ll_dt_exp;
158 static inline struct obd_export *llu_i2mdexp(struct inode *inode)
160 return llu_i2info(inode)->lli_sbi->ll_md_exp;
163 static inline int llu_is_root_inode(struct inode *inode)
165 return (fid_seq(&llu_i2info(inode)->lli_fid) ==
166 fid_seq(&llu_i2info(inode)->lli_sbi->ll_root_fid) &&
167 fid_oid(&llu_i2info(inode)->lli_fid) ==
168 fid_oid(&llu_i2info(inode)->lli_sbi->ll_root_fid));
171 #define LL_SAVE_INTENT(inode, it) \
173 struct lookup_intent *temp; \
174 LASSERT(llu_i2info(inode)->lli_it == NULL); \
175 OBD_ALLOC(temp, sizeof(*temp)); \
176 memcpy(temp, it, sizeof(*temp)); \
177 llu_i2info(inode)->lli_it = temp; \
178 CDEBUG(D_DENTRY, "alloc intent %p to inode %p(ino %llu)\n", \
179 temp, inode, (long long)llu_i2stat(inode)->st_ino); \
183 #define LL_GET_INTENT(inode, it) \
185 it = llu_i2info(inode)->lli_it; \
188 llu_i2info(inode)->lli_it = NULL; \
189 CDEBUG(D_DENTRY, "dettach intent %p from inode %p(ino %llu)\n", \
190 it, inode, (long long)llu_i2stat(inode)->st_ino); \
193 static inline struct lu_fid *ll_inode2fid(struct inode *inode)
195 LASSERT(inode != NULL);
196 return &llu_i2info(inode)->lli_fid;
199 void ll_i2gids(__u32 *suppgids, struct inode *i1,struct inode *i2);
201 static inline __u64 ll_file_maxbytes(struct inode *inode)
203 return llu_i2info(inode)->lli_maxbytes;
206 #define IS_BAD_PTR(ptr) \
207 ((unsigned long)(ptr) == 0 || (unsigned long)(ptr) > -1000UL)
210 int liblustre_process_log(struct config_llog_instance *cfg, char *mgsnid,
211 char *profile, int allow_recov);
212 int ll_parse_mount_target(const char *target, char **mgsnid,
214 extern char *lustre_path;
217 void llu_update_inode(struct inode *inode, struct lustre_md *md);
218 struct inode *llu_iget(struct filesys *fs, struct lustre_md *md);
219 int llu_inode_getattr(struct inode *inode, struct obdo *obdo,
220 __u64 ioepoch, int sync);
221 int llu_md_setattr(struct inode *inode, struct md_op_data *op_data,
222 struct md_open_data **mod);
223 int llu_setattr_raw(struct inode *inode, struct iattr *attr);
224 int llu_put_grouplock(struct inode *inode, unsigned long arg);
226 extern struct fssw_ops llu_fssw_ops;
229 void llu_prep_md_op_data(struct md_op_data *op_data, struct inode *i1,
230 struct inode *i2, const char *name, int namelen,
231 int mode, __u32 opc);
232 int llu_local_open(struct llu_inode_info *lli, struct lookup_intent *it);
233 int llu_iop_open(struct pnode *pnode, int flags, mode_t mode);
234 void llu_done_writing_attr(struct inode *inode, struct md_op_data *op_data);
235 int llu_md_close(struct obd_export *md_exp, struct inode *inode);
236 void llu_pack_inode2opdata(struct inode *inode, struct md_op_data *op_data,
237 struct lustre_handle *fh);
238 int llu_file_release(struct inode *inode);
239 int llu_som_update(struct inode *inode, struct md_op_data *op_data);
240 int llu_iop_close(struct inode *inode);
241 _SYSIO_OFF_T llu_iop_pos(struct inode *ino, _SYSIO_OFF_T off);
242 void obdo_refresh_inode(struct inode *dst, struct obdo *src, obd_flag valid);
243 int llu_objects_destroy(struct ptlrpc_request *request, struct inode *dir);
244 void llu_ioepoch_open(struct llu_inode_info *lli, __u64 ioepoch);
247 int llu_iop_read(struct inode *ino, struct ioctx *ioctxp);
248 int llu_iop_write(struct inode *ino, struct ioctx *ioctxp);
249 int llu_iop_iodone(struct ioctx *ioctxp);
252 int llu_iop_lookup(struct pnode *pnode,
254 struct intent *intnt,
256 struct inode *llu_inode_from_resource_lock(struct ldlm_lock *lock);
257 int llu_md_blocking_ast(struct ldlm_lock *lock,
258 struct ldlm_lock_desc *desc,
259 void *data, int flag);
262 ssize_t llu_iop_filldirentries(struct inode *ino, _SYSIO_OFF_T *basep,
263 char *buf, size_t nbytes);
266 #define EXT2_NAME_LEN (255)
273 char name[EXT2_NAME_LEN];
276 static inline struct ext2_dirent *ext2_next_entry(struct ext2_dirent *p)
278 return (struct ext2_dirent*)((char*) p + le16_to_cpu(p->rec_len));
281 int llu_merge_lvb(const struct lu_env *env, struct inode *inode);
283 static inline void inode_init_lvb(struct inode *inode, struct ost_lvb *lvb)
285 struct intnl_stat *st = llu_i2stat(inode);
286 lvb->lvb_size = st->st_size;
287 lvb->lvb_blocks = st->st_blocks;
288 lvb->lvb_mtime = st->st_mtime;
289 lvb->lvb_atime = st->st_atime;
290 lvb->lvb_ctime = st->st_ctime;
293 struct llu_io_session {
294 struct inode *lis_inode;
306 struct llu_io_session;
307 void put_io_group(struct llu_io_group *group);
309 int cl_sb_init(struct llu_sb_info *sbi);
310 int cl_sb_fini(struct llu_sb_info *sbi);
312 void llu_io_init(struct cl_io *io, struct inode *inode, int write);
315 struct llu_io_session *sio_session;
319 struct slp_io ss_ios;
322 int slp_global_init(void);
323 void slp_global_fini(void);
325 static inline struct slp_session *slp_env_session(const struct lu_env *env)
327 extern struct lu_context_key slp_session_key;
328 struct slp_session *ses;
329 ses = lu_context_key_get(env->le_ses, &slp_session_key);
330 LASSERT(ses != NULL);
333 static inline struct slp_io *slp_env_io(const struct lu_env *env)
335 return &slp_env_session(env)->ss_ios;
338 /* lclient compat stuff */
339 #define cl_inode_info llu_inode_info
340 #define cl_i2info(info) llu_i2info(info)
341 #define cl_inode_mode(inode) (llu_i2stat(inode)->st_mode)
342 #define cl_i2sbi llu_i2sbi
343 #define cl_isize_read(inode) (llu_i2stat(inode)->st_size)
344 #define cl_isize_write(inode,kms) do{llu_i2stat(inode)->st_size = kms;}while(0)
345 #define cl_isize_write_nolock(inode,kms) cl_isize_write(inode,kms)
347 static inline struct ll_file_data *cl_iattr2fd(struct inode *inode,
348 const struct iattr *attr)
350 return llu_i2info(inode)->lli_file_data;
353 static inline void cl_isize_lock(struct inode *inode)
357 static inline void cl_isize_unlock(struct inode *inode)
361 static inline int cl_merge_lvb(const struct lu_env *env, struct inode *inode)
363 return llu_merge_lvb(env, inode);
366 #define cl_inode_atime(inode) (llu_i2stat(inode)->st_atime)
367 #define cl_inode_ctime(inode) (llu_i2stat(inode)->st_ctime)
368 #define cl_inode_mtime(inode) (llu_i2stat(inode)->st_mtime)
370 static inline struct obd_capa *cl_capa_lookup(struct inode *inode,
371 enum cl_req_type crt)
376 static inline void cl_stats_tally(struct cl_device *dev, enum cl_req_type crt,
381 static inline loff_t i_size_read(struct inode *inode)
383 return inode->i_stbuf.st_size;
386 static inline __u64 hash_x_index(__u64 hash, int hash64)
388 if (BITS_PER_LONG == 32 && hash64)
390 /* save hash 0 with hash 1 */
391 return ~0ULL - (hash + !hash);