1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
30 * Use is subject to license terms.
32 * Copyright (c) 2012, Whamcloud, Inc.
35 * This file is part of Lustre, http://www.lustre.org/
36 * Lustre is a trademark of Sun Microsystems, Inc.
42 #include <sys/queue.h>
54 #include <liblustre.h>
56 #include <obd_class.h>
57 #include <lustre_mdc.h>
58 #include <lustre_lite.h>
59 #include <lustre_ver.h>
61 #include <sys/types.h>
64 /* for struct cl_lock_descr and struct cl_io */
65 #include <cl_object.h>
68 /* This should not be "optimized" use ~0ULL because page->index is a long and
69 * 32-bit systems are therefore limited to 16TB in a mapping */
70 #define MAX_LFS_FILESIZE ((__u64)(~0UL) << CFS_PAGE_SHIFT)
72 struct obd_client_handle fd_mds_och;
74 struct ccc_grouplock fd_grouplock;
78 struct obd_uuid ll_sb_uuid;
79 struct obd_export *ll_md_exp;
80 struct obd_export *ll_dt_exp;
81 struct lu_fid ll_root_fid;
83 struct lustre_client_ocd ll_lco;
84 cfs_list_t ll_conn_chain;
86 struct obd_uuid ll_mds_uuid;
87 struct obd_uuid ll_mds_peer_uuid;
89 struct lu_site *ll_site;
90 struct cl_device *ll_cl;
93 #define LL_SBI_NOLCK 0x1
96 /* MDS has an authority for the Size-on-MDS attributes. */
97 LLIF_MDS_SIZE_LOCK = (1 << 0),
100 struct llu_inode_info {
101 struct llu_sb_info *lli_sbi;
102 struct lu_fid lli_fid;
104 struct lov_stripe_md *lli_smd;
105 char *lli_symlink_name;
107 unsigned long lli_flags;
111 struct file_identifier lli_sysio_fid;
113 struct lookup_intent *lli_it;
115 /* XXX workaround for libsysio readdir */
118 /* in libsysio we have no chance to store data in file,
119 * so place it here. since it's possible that an file
120 * was opened several times without close, we track an
122 struct ll_file_data *lli_file_data;
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);
222 int llu_intent_lock(struct inode *parent, struct pnode *pnode,
223 struct lookup_intent *, int flags, intent_finish_cb);
225 static inline __u64 ll_file_maxbytes(struct inode *inode)
227 return llu_i2info(inode)->lli_maxbytes;
230 struct mount_option_s
236 #define IS_BAD_PTR(ptr) \
237 ((unsigned long)(ptr) == 0 || (unsigned long)(ptr) > -1000UL)
240 int liblustre_process_log(struct config_llog_instance *cfg, char *mgsnid,
241 char *profile, int allow_recov);
242 int ll_parse_mount_target(const char *target, char **mgsnid,
245 extern struct mount_option_s mount_option;
248 void llu_update_inode(struct inode *inode, struct lustre_md *md);
249 void obdo_to_inode(struct inode *dst, struct obdo *src, obd_flag valid);
250 int ll_it_open_error(int phase, struct lookup_intent *it);
251 struct inode *llu_iget(struct filesys *fs, struct lustre_md *md);
252 int llu_inode_getattr(struct inode *inode, struct obdo *obdo,
253 __u64 ioepoch, int sync);
254 int llu_md_setattr(struct inode *inode, struct md_op_data *op_data,
255 struct md_open_data **mod);
256 int llu_setattr_raw(struct inode *inode, struct iattr *attr);
257 int llu_put_grouplock(struct inode *inode, unsigned long arg);
259 extern struct fssw_ops llu_fssw_ops;
262 void llu_prep_md_op_data(struct md_op_data *op_data, struct inode *i1,
263 struct inode *i2, const char *name, int namelen,
264 int mode, __u32 opc);
265 int llu_create(struct inode *dir, struct pnode_base *pnode, int mode);
266 int llu_local_open(struct llu_inode_info *lli, struct lookup_intent *it);
267 int llu_iop_open(struct pnode *pnode, int flags, mode_t mode);
268 void llu_done_writing_attr(struct inode *inode, struct md_op_data *op_data);
269 int llu_md_close(struct obd_export *md_exp, struct inode *inode);
270 void llu_pack_inode2opdata(struct inode *inode, struct md_op_data *op_data,
271 struct lustre_handle *fh);
272 int llu_file_release(struct inode *inode);
273 int llu_som_update(struct inode *inode, struct md_op_data *op_data);
274 int llu_iop_close(struct inode *inode);
275 _SYSIO_OFF_T llu_iop_pos(struct inode *ino, _SYSIO_OFF_T off);
276 int llu_vmtruncate(struct inode * inode, loff_t offset, obd_flag obd_flags);
277 void obdo_refresh_inode(struct inode *dst, struct obdo *src, obd_flag valid);
278 int llu_objects_destroy(struct ptlrpc_request *request, struct inode *dir);
279 void llu_ioepoch_open(struct llu_inode_info *lli, __u64 ioepoch);
282 int llu_iop_read(struct inode *ino, struct ioctx *ioctxp);
283 int llu_iop_write(struct inode *ino, struct ioctx *ioctxp);
284 int llu_iop_iodone(struct ioctx *ioctxp);
285 int llu_glimpse_size(struct inode *inode);
286 int llu_extent_lock(struct ll_file_data *fd, struct inode *inode,
287 struct lov_stripe_md *lsm, int mode,
288 ldlm_policy_data_t *policy, struct lustre_handle *lockh,
290 int llu_extent_unlock(struct ll_file_data *fd, struct inode *inode,
291 struct lov_stripe_md *lsm, int mode,
292 struct lustre_handle *lockh);
295 int llu_iop_lookup(struct pnode *pnode,
297 struct intent *intnt,
299 void unhook_stale_inode(struct pnode *pno);
300 struct inode *llu_inode_from_lock(struct ldlm_lock *lock);
301 int llu_md_blocking_ast(struct ldlm_lock *lock,
302 struct ldlm_lock_desc *desc,
303 void *data, int flag);
306 ssize_t llu_iop_filldirentries(struct inode *ino, _SYSIO_OFF_T *basep,
307 char *buf, size_t nbytes);
309 /* liblustre/llite_fid.c*/
310 unsigned long llu_fid_build_ino(struct llu_sb_info *sbi,
314 #define EXT2_NAME_LEN (255)
321 char name[EXT2_NAME_LEN];
324 #define EXT2_DIR_PAD 4
325 #define EXT2_DIR_ROUND (EXT2_DIR_PAD - 1)
326 #define EXT2_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT2_DIR_ROUND) & \
329 static inline struct ext2_dirent *ext2_next_entry(struct ext2_dirent *p)
331 return (struct ext2_dirent*)((char*) p + le16_to_cpu(p->rec_len));
334 int llu_merge_lvb(struct inode *inode);
336 static inline void inode_init_lvb(struct inode *inode, struct ost_lvb *lvb)
338 struct intnl_stat *st = llu_i2stat(inode);
339 lvb->lvb_size = st->st_size;
340 lvb->lvb_blocks = st->st_blocks;
341 lvb->lvb_mtime = st->st_mtime;
342 lvb->lvb_atime = st->st_atime;
343 lvb->lvb_ctime = st->st_ctime;
346 #define LLU_IO_GROUP_SIZE(x) \
347 (sizeof(struct llu_io_group) + \
348 (sizeof(struct ll_async_page) + \
349 sizeof(cfs_page_t) + \
350 llap_cookie_size) * (x))
352 struct llu_io_session {
353 struct inode *lis_inode;
363 struct lustre_rw_params *lig_params;
368 struct llu_io_session;
369 void put_io_group(struct llu_io_group *group);
371 int cl_sb_init(struct llu_sb_info *sbi);
372 int cl_sb_fini(struct llu_sb_info *sbi);
374 void llu_io_init(struct cl_io *io, struct inode *inode, int write);
377 struct llu_io_session *sio_session;
381 struct slp_io ss_ios;
384 static inline struct slp_session *slp_env_session(const struct lu_env *env)
386 extern struct lu_context_key slp_session_key;
387 struct slp_session *ses;
388 ses = lu_context_key_get(env->le_ses, &slp_session_key);
389 LASSERT(ses != NULL);
392 static inline struct slp_io *slp_env_io(const struct lu_env *env)
394 return &slp_env_session(env)->ss_ios;
397 /* lclient compat stuff */
398 #define cl_inode_info llu_inode_info
399 #define cl_i2info(info) llu_i2info(info)
400 #define cl_inode_mode(inode) (llu_i2stat(inode)->st_mode)
401 #define cl_i2sbi llu_i2sbi
402 #define cl_isize_read(inode) (llu_i2stat(inode)->st_size)
403 #define cl_isize_write(inode,kms) do{llu_i2stat(inode)->st_size = kms;}while(0)
404 #define cl_isize_write_nolock(inode,kms) cl_isize_write(inode,kms)
406 static inline struct ll_file_data *cl_iattr2fd(struct inode *inode,
407 const struct iattr *attr)
409 return llu_i2info(inode)->lli_file_data;
412 static inline void cl_isize_lock(struct inode *inode, int lsmlock)
416 static inline void cl_isize_unlock(struct inode *inode, int lsmlock)
420 static inline int cl_merge_lvb(struct inode *inode)
422 return llu_merge_lvb(inode);
425 #define cl_inode_atime(inode) (llu_i2stat(inode)->st_atime)
426 #define cl_inode_ctime(inode) (llu_i2stat(inode)->st_ctime)
427 #define cl_inode_mtime(inode) (llu_i2stat(inode)->st_mtime)
429 static inline struct obd_capa *cl_capa_lookup(struct inode *inode,
430 enum cl_req_type crt)
435 static inline void cl_stats_tally(struct cl_device *dev, enum cl_req_type crt,
440 static inline loff_t i_size_read(struct inode *inode)
442 return inode->i_stbuf.st_size;
445 static inline void i_size_write(struct inode *inode, loff_t i_sz)
447 inode->i_stbuf.st_size = i_sz;