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 PAGE_CACHE_MAXBYTES ((__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;
106 cfs_semaphore_t lli_open_sem;
108 unsigned long lli_flags;
112 struct file_identifier lli_sysio_fid;
114 struct lookup_intent *lli_it;
116 /* XXX workaround for libsysio readdir */
119 /* in libsysio we have no chance to store data in file,
120 * so place it here. since it's possible that an file
121 * was opened several times without close, we track an
123 struct ll_file_data *lli_file_data;
127 /* not for stat, change it later */
129 unsigned long lli_st_generation;
130 struct cl_object *lli_clob;
131 /* the most recent timestamps obtained from mds */
132 struct ost_lvb lli_lvb;
135 static inline struct llu_sb_info *llu_fs2sbi(struct filesys *fs)
137 return (struct llu_sb_info*)(fs->fs_private);
140 static inline struct llu_inode_info *llu_i2info(struct inode *inode)
142 return (struct llu_inode_info*)(inode->i_private);
145 static inline int ll_inode_flags(struct inode *inode)
147 return llu_i2info(inode)->lli_st_flags;
150 static inline struct intnl_stat *llu_i2stat(struct inode *inode)
152 return &inode->i_stbuf;
155 #define ll_inode_blksize(inode) (llu_i2stat(inode)->st_blksize)
157 static inline struct llu_sb_info *llu_i2sbi(struct inode *inode)
159 return llu_i2info(inode)->lli_sbi;
162 static inline struct obd_export *llu_i2obdexp(struct inode *inode)
164 return llu_i2info(inode)->lli_sbi->ll_dt_exp;
167 static inline struct obd_export *llu_i2mdexp(struct inode *inode)
169 return llu_i2info(inode)->lli_sbi->ll_md_exp;
172 static inline int llu_is_root_inode(struct inode *inode)
174 return (fid_seq(&llu_i2info(inode)->lli_fid) ==
175 fid_seq(&llu_i2info(inode)->lli_sbi->ll_root_fid) &&
176 fid_oid(&llu_i2info(inode)->lli_fid) ==
177 fid_oid(&llu_i2info(inode)->lli_sbi->ll_root_fid));
180 #define LL_SAVE_INTENT(inode, it) \
182 struct lookup_intent *temp; \
183 LASSERT(llu_i2info(inode)->lli_it == NULL); \
184 OBD_ALLOC(temp, sizeof(*temp)); \
185 memcpy(temp, it, sizeof(*temp)); \
186 llu_i2info(inode)->lli_it = temp; \
187 CDEBUG(D_DENTRY, "alloc intent %p to inode %p(ino %llu)\n", \
188 temp, inode, (long long)llu_i2stat(inode)->st_ino); \
192 #define LL_GET_INTENT(inode, it) \
194 it = llu_i2info(inode)->lli_it; \
197 llu_i2info(inode)->lli_it = NULL; \
198 CDEBUG(D_DENTRY, "dettach intent %p from inode %p(ino %llu)\n", \
199 it, inode, (long long)llu_i2stat(inode)->st_ino); \
202 /* interpet return codes from intent lookup */
203 #define LL_LOOKUP_POSITIVE 1
204 #define LL_LOOKUP_NEGATIVE 2
206 static inline struct lu_fid *ll_inode2fid(struct inode *inode)
208 LASSERT(inode != NULL);
209 return &llu_i2info(inode)->lli_fid;
213 struct inode *icbd_parent;
214 struct pnode *icbd_child;
218 void ll_i2gids(__u32 *suppgids, struct inode *i1,struct inode *i2);
220 typedef int (*intent_finish_cb)(struct ptlrpc_request *,
221 struct inode *parent, struct pnode *pnode,
222 struct lookup_intent *, int offset, obd_id ino);
223 int llu_intent_lock(struct inode *parent, struct pnode *pnode,
224 struct lookup_intent *, int flags, intent_finish_cb);
226 static inline __u64 ll_file_maxbytes(struct inode *inode)
228 return llu_i2info(inode)->lli_maxbytes;
231 struct mount_option_s
237 #define IS_BAD_PTR(ptr) \
238 ((unsigned long)(ptr) == 0 || (unsigned long)(ptr) > -1000UL)
241 int liblustre_process_log(struct config_llog_instance *cfg, char *mgsnid,
242 char *profile, int allow_recov);
243 int ll_parse_mount_target(const char *target, char **mgsnid,
246 extern struct mount_option_s mount_option;
249 void llu_update_inode(struct inode *inode, struct lustre_md *md);
250 void obdo_to_inode(struct inode *dst, struct obdo *src, obd_flag valid);
251 int ll_it_open_error(int phase, struct lookup_intent *it);
252 struct inode *llu_iget(struct filesys *fs, struct lustre_md *md);
253 int llu_inode_getattr(struct inode *inode, struct obdo *obdo,
254 __u64 ioepoch, int sync);
255 int llu_md_setattr(struct inode *inode, struct md_op_data *op_data,
256 struct md_open_data **mod);
257 int llu_setattr_raw(struct inode *inode, struct iattr *attr);
258 int llu_put_grouplock(struct inode *inode, unsigned long arg);
260 extern struct fssw_ops llu_fssw_ops;
263 void llu_prep_md_op_data(struct md_op_data *op_data, struct inode *i1,
264 struct inode *i2, const char *name, int namelen,
265 int mode, __u32 opc);
266 int llu_create(struct inode *dir, struct pnode_base *pnode, int mode);
267 int llu_local_open(struct llu_inode_info *lli, struct lookup_intent *it);
268 int llu_iop_open(struct pnode *pnode, int flags, mode_t mode);
269 void llu_done_writing_attr(struct inode *inode, struct md_op_data *op_data);
270 int llu_md_close(struct obd_export *md_exp, struct inode *inode);
271 void llu_pack_inode2opdata(struct inode *inode, struct md_op_data *op_data,
272 struct lustre_handle *fh);
273 int llu_file_release(struct inode *inode);
274 int llu_som_update(struct inode *inode, struct md_op_data *op_data);
275 int llu_iop_close(struct inode *inode);
276 _SYSIO_OFF_T llu_iop_pos(struct inode *ino, _SYSIO_OFF_T off);
277 int llu_vmtruncate(struct inode * inode, loff_t offset, obd_flag obd_flags);
278 void obdo_refresh_inode(struct inode *dst, struct obdo *src, obd_flag valid);
279 int llu_objects_destroy(struct ptlrpc_request *request, struct inode *dir);
280 void llu_ioepoch_open(struct llu_inode_info *lli, __u64 ioepoch);
283 int llu_iop_read(struct inode *ino, struct ioctx *ioctxp);
284 int llu_iop_write(struct inode *ino, struct ioctx *ioctxp);
285 int llu_iop_iodone(struct ioctx *ioctxp);
286 int llu_glimpse_size(struct inode *inode);
287 int llu_extent_lock(struct ll_file_data *fd, struct inode *inode,
288 struct lov_stripe_md *lsm, int mode,
289 ldlm_policy_data_t *policy, struct lustre_handle *lockh,
291 int llu_extent_unlock(struct ll_file_data *fd, struct inode *inode,
292 struct lov_stripe_md *lsm, int mode,
293 struct lustre_handle *lockh);
296 int llu_iop_lookup(struct pnode *pnode,
298 struct intent *intnt,
300 void unhook_stale_inode(struct pnode *pno);
301 struct inode *llu_inode_from_lock(struct ldlm_lock *lock);
302 int llu_md_blocking_ast(struct ldlm_lock *lock,
303 struct ldlm_lock_desc *desc,
304 void *data, int flag);
307 ssize_t llu_iop_filldirentries(struct inode *ino, _SYSIO_OFF_T *basep,
308 char *buf, size_t nbytes);
310 /* liblustre/llite_fid.c*/
311 unsigned long llu_fid_build_ino(struct llu_sb_info *sbi,
315 #define EXT2_NAME_LEN (255)
322 char name[EXT2_NAME_LEN];
325 #define EXT2_DIR_PAD 4
326 #define EXT2_DIR_ROUND (EXT2_DIR_PAD - 1)
327 #define EXT2_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT2_DIR_ROUND) & \
330 static inline struct ext2_dirent *ext2_next_entry(struct ext2_dirent *p)
332 return (struct ext2_dirent*)((char*) p + le16_to_cpu(p->rec_len));
335 int llu_merge_lvb(struct inode *inode);
337 static inline void inode_init_lvb(struct inode *inode, struct ost_lvb *lvb)
339 struct intnl_stat *st = llu_i2stat(inode);
340 lvb->lvb_size = st->st_size;
341 lvb->lvb_blocks = st->st_blocks;
342 lvb->lvb_mtime = st->st_mtime;
343 lvb->lvb_atime = st->st_atime;
344 lvb->lvb_ctime = st->st_ctime;
347 #define LLU_IO_GROUP_SIZE(x) \
348 (sizeof(struct llu_io_group) + \
349 (sizeof(struct ll_async_page) + \
350 sizeof(cfs_page_t) + \
351 llap_cookie_size) * (x))
353 struct llu_io_session {
354 struct inode *lis_inode;
364 struct lustre_rw_params *lig_params;
369 struct llu_io_session;
370 void put_io_group(struct llu_io_group *group);
372 int cl_sb_init(struct llu_sb_info *sbi);
373 int cl_sb_fini(struct llu_sb_info *sbi);
375 void llu_io_init(struct cl_io *io, struct inode *inode, int write);
378 struct llu_io_session *sio_session;
382 struct slp_io ss_ios;
385 static inline struct slp_session *slp_env_session(const struct lu_env *env)
387 extern struct lu_context_key slp_session_key;
388 struct slp_session *ses;
389 ses = lu_context_key_get(env->le_ses, &slp_session_key);
390 LASSERT(ses != NULL);
393 static inline struct slp_io *slp_env_io(const struct lu_env *env)
395 return &slp_env_session(env)->ss_ios;
398 /* lclient compat stuff */
399 #define cl_inode_info llu_inode_info
400 #define cl_i2info(info) llu_i2info(info)
401 #define cl_inode_mode(inode) (llu_i2stat(inode)->st_mode)
402 #define cl_i2sbi llu_i2sbi
403 #define cl_isize_read(inode) (llu_i2stat(inode)->st_size)
404 #define cl_isize_write(inode,kms) do{llu_i2stat(inode)->st_size = kms;}while(0)
405 #define cl_isize_write_nolock(inode,kms) cl_isize_write(inode,kms)
407 static inline struct ll_file_data *cl_iattr2fd(struct inode *inode,
408 const struct iattr *attr)
410 return llu_i2info(inode)->lli_file_data;
413 static inline void cl_isize_lock(struct inode *inode, int lsmlock)
417 static inline void cl_isize_unlock(struct inode *inode, int lsmlock)
421 static inline int cl_merge_lvb(struct inode *inode)
423 return llu_merge_lvb(inode);
426 #define cl_inode_atime(inode) (llu_i2stat(inode)->st_atime)
427 #define cl_inode_ctime(inode) (llu_i2stat(inode)->st_ctime)
428 #define cl_inode_mtime(inode) (llu_i2stat(inode)->st_mtime)
430 static inline struct obd_capa *cl_capa_lookup(struct inode *inode,
431 enum cl_req_type crt)
436 static inline void cl_stats_tally(struct cl_device *dev, enum cl_req_type crt,
441 static inline loff_t i_size_read(struct inode *inode)
443 return inode->i_stbuf.st_size;
446 static inline void i_size_write(struct inode *inode, loff_t i_sz)
448 inode->i_stbuf.st_size = i_sz;