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.
40 #include <sys/queue.h>
52 #include <liblustre.h>
54 #include <obd_class.h>
55 #include <lustre_mdc.h>
56 #include <lustre_lite.h>
57 #include <lustre_ver.h>
59 #include <sys/types.h>
62 /* for struct cl_lock_descr and struct cl_io */
63 #include <cl_object.h>
66 /* This should not be "optimized" use ~0ULL because page->index is a long and
67 * 32-bit systems are therefore limited to 16TB in a mapping */
68 #define MAX_LFS_FILESIZE ((__u64)(~0UL) << PAGE_CACHE_SHIFT)
70 struct obd_client_handle fd_mds_och;
72 struct ccc_grouplock fd_grouplock;
76 struct obd_uuid ll_sb_uuid;
77 struct obd_export *ll_md_exp;
78 struct obd_export *ll_dt_exp;
79 struct lu_fid ll_root_fid;
81 struct lustre_client_ocd ll_lco;
82 cfs_list_t ll_conn_chain;
84 struct obd_uuid ll_mds_uuid;
85 struct obd_uuid ll_mds_peer_uuid;
87 struct lu_site *ll_site;
88 struct cl_device *ll_cl;
91 #define LL_SBI_NOLCK 0x1
94 /* MDS has an authority for the Size-on-MDS attributes. */
95 LLIF_MDS_SIZE_LOCK = (1 << 0),
98 struct llu_inode_info {
99 struct llu_sb_info *lli_sbi;
100 struct lu_fid lli_fid;
102 char *lli_symlink_name;
104 unsigned long lli_flags;
108 struct file_identifier lli_sysio_fid;
110 struct lookup_intent *lli_it;
112 /* XXX workaround for libsysio readdir */
115 /* in libsysio we have no chance to store data in file,
116 * so place it here. since it's possible that an file
117 * was opened several times without close, we track an
119 struct ll_file_data *lli_file_data;
120 /* checking lli_has_smd is reliable only inside an IO
121 * i.e, lov stripe has been held. */
126 /* not for stat, change it later */
128 unsigned long lli_st_generation;
129 struct cl_object *lli_clob;
130 /* the most recent timestamps obtained from mds */
131 struct ost_lvb lli_lvb;
134 static inline struct llu_sb_info *llu_fs2sbi(struct filesys *fs)
136 return (struct llu_sb_info*)(fs->fs_private);
139 static inline struct llu_inode_info *llu_i2info(struct inode *inode)
141 return (struct llu_inode_info*)(inode->i_private);
144 static inline int ll_inode_flags(struct inode *inode)
146 return llu_i2info(inode)->lli_st_flags;
149 static inline struct intnl_stat *llu_i2stat(struct inode *inode)
151 return &inode->i_stbuf;
154 #define ll_inode_blksize(inode) (llu_i2stat(inode)->st_blksize)
156 static inline struct llu_sb_info *llu_i2sbi(struct inode *inode)
158 return llu_i2info(inode)->lli_sbi;
161 static inline struct obd_export *llu_i2obdexp(struct inode *inode)
163 return llu_i2info(inode)->lli_sbi->ll_dt_exp;
166 static inline struct obd_export *llu_i2mdexp(struct inode *inode)
168 return llu_i2info(inode)->lli_sbi->ll_md_exp;
171 static inline int llu_is_root_inode(struct inode *inode)
173 return (fid_seq(&llu_i2info(inode)->lli_fid) ==
174 fid_seq(&llu_i2info(inode)->lli_sbi->ll_root_fid) &&
175 fid_oid(&llu_i2info(inode)->lli_fid) ==
176 fid_oid(&llu_i2info(inode)->lli_sbi->ll_root_fid));
179 #define LL_SAVE_INTENT(inode, it) \
181 struct lookup_intent *temp; \
182 LASSERT(llu_i2info(inode)->lli_it == NULL); \
183 OBD_ALLOC(temp, sizeof(*temp)); \
184 memcpy(temp, it, sizeof(*temp)); \
185 llu_i2info(inode)->lli_it = temp; \
186 CDEBUG(D_DENTRY, "alloc intent %p to inode %p(ino %llu)\n", \
187 temp, inode, (long long)llu_i2stat(inode)->st_ino); \
191 #define LL_GET_INTENT(inode, it) \
193 it = llu_i2info(inode)->lli_it; \
196 llu_i2info(inode)->lli_it = NULL; \
197 CDEBUG(D_DENTRY, "dettach intent %p from inode %p(ino %llu)\n", \
198 it, inode, (long long)llu_i2stat(inode)->st_ino); \
201 /* interpet return codes from intent lookup */
202 #define LL_LOOKUP_POSITIVE 1
203 #define LL_LOOKUP_NEGATIVE 2
205 static inline struct lu_fid *ll_inode2fid(struct inode *inode)
207 LASSERT(inode != NULL);
208 return &llu_i2info(inode)->lli_fid;
212 struct inode *icbd_parent;
213 struct pnode *icbd_child;
217 void ll_i2gids(__u32 *suppgids, struct inode *i1,struct inode *i2);
219 typedef int (*intent_finish_cb)(struct ptlrpc_request *,
220 struct inode *parent, struct pnode *pnode,
221 struct lookup_intent *, int offset, obd_id ino);
223 static inline __u64 ll_file_maxbytes(struct inode *inode)
225 return llu_i2info(inode)->lli_maxbytes;
228 struct mount_option_s
234 #define IS_BAD_PTR(ptr) \
235 ((unsigned long)(ptr) == 0 || (unsigned long)(ptr) > -1000UL)
238 int liblustre_process_log(struct config_llog_instance *cfg, char *mgsnid,
239 char *profile, int allow_recov);
240 int ll_parse_mount_target(const char *target, char **mgsnid,
243 extern struct mount_option_s mount_option;
246 void llu_update_inode(struct inode *inode, struct lustre_md *md);
247 void obdo_to_inode(struct inode *dst, struct obdo *src, obd_flag valid);
248 int ll_it_open_error(int phase, struct lookup_intent *it);
249 struct inode *llu_iget(struct filesys *fs, struct lustre_md *md);
250 int llu_inode_getattr(struct inode *inode, struct obdo *obdo,
251 __u64 ioepoch, int sync);
252 int llu_md_setattr(struct inode *inode, struct md_op_data *op_data,
253 struct md_open_data **mod);
254 int llu_setattr_raw(struct inode *inode, struct iattr *attr);
255 int llu_put_grouplock(struct inode *inode, unsigned long arg);
257 extern struct fssw_ops llu_fssw_ops;
260 void llu_prep_md_op_data(struct md_op_data *op_data, struct inode *i1,
261 struct inode *i2, const char *name, int namelen,
262 int mode, __u32 opc);
263 int llu_create(struct inode *dir, struct pnode_base *pnode, int mode);
264 int llu_local_open(struct llu_inode_info *lli, struct lookup_intent *it);
265 int llu_iop_open(struct pnode *pnode, int flags, mode_t mode);
266 void llu_done_writing_attr(struct inode *inode, struct md_op_data *op_data);
267 int llu_md_close(struct obd_export *md_exp, struct inode *inode);
268 void llu_pack_inode2opdata(struct inode *inode, struct md_op_data *op_data,
269 struct lustre_handle *fh);
270 int llu_file_release(struct inode *inode);
271 int llu_som_update(struct inode *inode, struct md_op_data *op_data);
272 int llu_iop_close(struct inode *inode);
273 _SYSIO_OFF_T llu_iop_pos(struct inode *ino, _SYSIO_OFF_T off);
274 int llu_vmtruncate(struct inode * inode, loff_t offset, obd_flag obd_flags);
275 void obdo_refresh_inode(struct inode *dst, struct obdo *src, obd_flag valid);
276 int llu_objects_destroy(struct ptlrpc_request *request, struct inode *dir);
277 void llu_ioepoch_open(struct llu_inode_info *lli, __u64 ioepoch);
280 int llu_iop_read(struct inode *ino, struct ioctx *ioctxp);
281 int llu_iop_write(struct inode *ino, struct ioctx *ioctxp);
282 int llu_iop_iodone(struct ioctx *ioctxp);
283 int llu_glimpse_size(struct inode *inode);
284 int llu_extent_lock(struct ll_file_data *fd, struct inode *inode,
285 struct lov_stripe_md *lsm, int mode,
286 ldlm_policy_data_t *policy, struct lustre_handle *lockh,
288 int llu_extent_unlock(struct ll_file_data *fd, struct inode *inode,
289 struct lov_stripe_md *lsm, int mode,
290 struct lustre_handle *lockh);
293 int llu_iop_lookup(struct pnode *pnode,
295 struct intent *intnt,
297 void unhook_stale_inode(struct pnode *pno);
298 struct inode *llu_inode_from_resource_lock(struct ldlm_lock *lock);
299 struct inode *llu_inode_from_lock(struct ldlm_lock *lock);
300 int llu_md_blocking_ast(struct ldlm_lock *lock,
301 struct ldlm_lock_desc *desc,
302 void *data, int flag);
305 ssize_t llu_iop_filldirentries(struct inode *ino, _SYSIO_OFF_T *basep,
306 char *buf, size_t nbytes);
308 /* liblustre/llite_fid.c*/
309 unsigned long llu_fid_build_ino(struct llu_sb_info *sbi,
313 #define EXT2_NAME_LEN (255)
320 char name[EXT2_NAME_LEN];
323 #define EXT2_DIR_PAD 4
324 #define EXT2_DIR_ROUND (EXT2_DIR_PAD - 1)
325 #define EXT2_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT2_DIR_ROUND) & \
328 static inline struct ext2_dirent *ext2_next_entry(struct ext2_dirent *p)
330 return (struct ext2_dirent*)((char*) p + le16_to_cpu(p->rec_len));
333 int llu_merge_lvb(const struct lu_env *env, struct inode *inode);
335 static inline void inode_init_lvb(struct inode *inode, struct ost_lvb *lvb)
337 struct intnl_stat *st = llu_i2stat(inode);
338 lvb->lvb_size = st->st_size;
339 lvb->lvb_blocks = st->st_blocks;
340 lvb->lvb_mtime = st->st_mtime;
341 lvb->lvb_atime = st->st_atime;
342 lvb->lvb_ctime = st->st_ctime;
345 #define LLU_IO_GROUP_SIZE(x) \
346 (sizeof(struct llu_io_group) + \
347 (sizeof(struct ll_async_page) + \
348 sizeof(struct page) + \
349 llap_cookie_size) * (x))
351 struct llu_io_session {
352 struct inode *lis_inode;
362 struct lustre_rw_params *lig_params;
367 struct llu_io_session;
368 void put_io_group(struct llu_io_group *group);
370 int cl_sb_init(struct llu_sb_info *sbi);
371 int cl_sb_fini(struct llu_sb_info *sbi);
373 void llu_io_init(struct cl_io *io, struct inode *inode, int write);
376 struct llu_io_session *sio_session;
380 struct slp_io ss_ios;
383 static inline struct slp_session *slp_env_session(const struct lu_env *env)
385 extern struct lu_context_key slp_session_key;
386 struct slp_session *ses;
387 ses = lu_context_key_get(env->le_ses, &slp_session_key);
388 LASSERT(ses != NULL);
391 static inline struct slp_io *slp_env_io(const struct lu_env *env)
393 return &slp_env_session(env)->ss_ios;
396 /* lclient compat stuff */
397 #define cl_inode_info llu_inode_info
398 #define cl_i2info(info) llu_i2info(info)
399 #define cl_inode_mode(inode) (llu_i2stat(inode)->st_mode)
400 #define cl_i2sbi llu_i2sbi
401 #define cl_isize_read(inode) (llu_i2stat(inode)->st_size)
402 #define cl_isize_write(inode,kms) do{llu_i2stat(inode)->st_size = kms;}while(0)
403 #define cl_isize_write_nolock(inode,kms) cl_isize_write(inode,kms)
405 static inline struct ll_file_data *cl_iattr2fd(struct inode *inode,
406 const struct iattr *attr)
408 return llu_i2info(inode)->lli_file_data;
411 static inline void cl_isize_lock(struct inode *inode)
415 static inline void cl_isize_unlock(struct inode *inode)
419 static inline int cl_merge_lvb(const struct lu_env *env, struct inode *inode)
421 return llu_merge_lvb(env, inode);
424 #define cl_inode_atime(inode) (llu_i2stat(inode)->st_atime)
425 #define cl_inode_ctime(inode) (llu_i2stat(inode)->st_ctime)
426 #define cl_inode_mtime(inode) (llu_i2stat(inode)->st_mtime)
428 static inline struct obd_capa *cl_capa_lookup(struct inode *inode,
429 enum cl_req_type crt)
434 static inline void cl_stats_tally(struct cl_device *dev, enum cl_req_type crt,
439 static inline loff_t i_size_read(struct inode *inode)
441 return inode->i_stbuf.st_size;
444 static inline void i_size_write(struct inode *inode, loff_t i_sz)
446 inode->i_stbuf.st_size = i_sz;