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 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
40 #include <liblustre.h>
42 #include <obd_class.h>
43 #include <lustre_mdc.h>
44 #include <lustre_lite.h>
45 #include <lustre_ver.h>
47 #include <sys/types.h>
50 /* for struct cl_lock_descr and struct cl_io */
51 #include <cl_object.h>
54 /* This should not be "optimized" use ~0ULL because page->index is a long and
55 * 32-bit systems are therefore limited to 16TB in a mapping */
56 #define PAGE_CACHE_MAXBYTES ((__u64)(~0UL) << CFS_PAGE_SHIFT)
59 struct obd_client_handle fd_mds_och;
61 struct ccc_grouplock fd_grouplock;
65 struct obd_uuid ll_sb_uuid;
66 struct obd_export *ll_md_exp;
67 struct obd_export *ll_dt_exp;
68 struct lu_fid ll_root_fid;
70 struct lustre_client_ocd ll_lco;
71 cfs_list_t ll_conn_chain;
73 struct obd_uuid ll_mds_uuid;
74 struct obd_uuid ll_mds_peer_uuid;
76 struct lu_site *ll_site;
77 struct cl_device *ll_cl;
80 #define LL_SBI_NOLCK 0x1
83 /* MDS has an authority for the Size-on-MDS attributes. */
84 LLIF_MDS_SIZE_LOCK = (1 << 0),
87 struct llu_inode_info {
88 struct llu_sb_info *lli_sbi;
89 struct lu_fid lli_fid;
91 struct lov_stripe_md *lli_smd;
92 char *lli_symlink_name;
93 cfs_semaphore_t lli_open_sem;
95 unsigned long lli_flags;
99 struct file_identifier lli_sysio_fid;
101 struct lookup_intent *lli_it;
103 /* XXX workaround for libsysio readdir */
106 /* in libsysio we have no chance to store data in file,
107 * so place it here. since it's possible that an file
108 * was opened several times without close, we track an
110 struct ll_file_data *lli_file_data;
114 /* not for stat, change it later */
116 unsigned long lli_st_generation;
117 struct cl_object *lli_clob;
118 /* the most recent timestamps obtained from mds */
119 struct ost_lvb lli_lvb;
123 static inline struct llu_sb_info *llu_fs2sbi(struct filesys *fs)
125 return (struct llu_sb_info*)(fs->fs_private);
128 static inline struct llu_inode_info *llu_i2info(struct inode *inode)
130 return (struct llu_inode_info*)(inode->i_private);
133 static inline struct intnl_stat *llu_i2stat(struct inode *inode)
135 return &inode->i_stbuf;
138 static inline struct llu_sb_info *llu_i2sbi(struct inode *inode)
140 return llu_i2info(inode)->lli_sbi;
143 static inline struct obd_export *llu_i2obdexp(struct inode *inode)
145 return llu_i2info(inode)->lli_sbi->ll_dt_exp;
148 static inline struct obd_export *llu_i2mdexp(struct inode *inode)
150 return llu_i2info(inode)->lli_sbi->ll_md_exp;
153 static inline int llu_is_root_inode(struct inode *inode)
155 return (fid_seq(&llu_i2info(inode)->lli_fid) ==
156 fid_seq(&llu_i2info(inode)->lli_sbi->ll_root_fid) &&
157 fid_oid(&llu_i2info(inode)->lli_fid) ==
158 fid_oid(&llu_i2info(inode)->lli_sbi->ll_root_fid));
161 #define LL_SAVE_INTENT(inode, it) \
163 struct lookup_intent *temp; \
164 LASSERT(llu_i2info(inode)->lli_it == NULL); \
165 OBD_ALLOC(temp, sizeof(*temp)); \
166 memcpy(temp, it, sizeof(*temp)); \
167 llu_i2info(inode)->lli_it = temp; \
168 CDEBUG(D_DENTRY, "alloc intent %p to inode %p(ino %llu)\n", \
169 temp, inode, (long long)llu_i2stat(inode)->st_ino); \
173 #define LL_GET_INTENT(inode, it) \
175 it = llu_i2info(inode)->lli_it; \
178 llu_i2info(inode)->lli_it = NULL; \
179 CDEBUG(D_DENTRY, "dettach intent %p from inode %p(ino %llu)\n", \
180 it, inode, (long long)llu_i2stat(inode)->st_ino); \
183 /* interpet return codes from intent lookup */
184 #define LL_LOOKUP_POSITIVE 1
185 #define LL_LOOKUP_NEGATIVE 2
187 static inline struct lu_fid *ll_inode2fid(struct inode *inode)
189 LASSERT(inode != NULL);
190 return &llu_i2info(inode)->lli_fid;
194 struct inode *icbd_parent;
195 struct pnode *icbd_child;
199 void ll_i2gids(__u32 *suppgids, struct inode *i1,struct inode *i2);
201 typedef int (*intent_finish_cb)(struct ptlrpc_request *,
202 struct inode *parent, struct pnode *pnode,
203 struct lookup_intent *, int offset, obd_id ino);
204 int llu_intent_lock(struct inode *parent, struct pnode *pnode,
205 struct lookup_intent *, int flags, intent_finish_cb);
207 static inline __u64 ll_file_maxbytes(struct inode *inode)
209 return llu_i2info(inode)->lli_maxbytes;
212 struct mount_option_s
218 #define IS_BAD_PTR(ptr) \
219 ((unsigned long)(ptr) == 0 || (unsigned long)(ptr) > -1000UL)
222 int liblustre_process_log(struct config_llog_instance *cfg, char *mgsnid,
223 char *profile, int allow_recov);
224 int ll_parse_mount_target(const char *target, char **mgsnid,
227 extern struct mount_option_s mount_option;
230 void llu_update_inode(struct inode *inode, struct lustre_md *md);
231 void obdo_to_inode(struct inode *dst, struct obdo *src, obd_flag valid);
232 void obdo_from_inode(struct obdo *dst, struct inode *src, obd_flag valid);
233 int ll_it_open_error(int phase, struct lookup_intent *it);
234 struct inode *llu_iget(struct filesys *fs, struct lustre_md *md);
235 int llu_inode_getattr(struct inode *inode, struct obdo *obdo,
236 __u64 ioepoch, int sync);
237 int llu_md_setattr(struct inode *inode, struct md_op_data *op_data,
238 struct md_open_data **mod);
239 int llu_setattr_raw(struct inode *inode, struct iattr *attr);
240 int llu_put_grouplock(struct inode *inode, unsigned long arg);
242 extern struct fssw_ops llu_fssw_ops;
245 void llu_prep_md_op_data(struct md_op_data *op_data, struct inode *i1,
246 struct inode *i2, const char *name, int namelen,
247 int mode, __u32 opc);
248 void llu_finish_md_op_data(struct md_op_data *op_data);
249 int llu_create(struct inode *dir, struct pnode_base *pnode, int mode);
250 int llu_local_open(struct llu_inode_info *lli, struct lookup_intent *it);
251 int llu_iop_open(struct pnode *pnode, int flags, mode_t mode);
252 void llu_done_writing_attr(struct inode *inode, struct md_op_data *op_data);
253 int llu_md_close(struct obd_export *md_exp, struct inode *inode);
254 void llu_pack_inode2opdata(struct inode *inode, struct md_op_data *op_data,
255 struct lustre_handle *fh);
256 int llu_file_release(struct inode *inode);
257 int llu_som_update(struct inode *inode, struct md_op_data *op_data);
258 int llu_iop_close(struct inode *inode);
259 _SYSIO_OFF_T llu_iop_pos(struct inode *ino, _SYSIO_OFF_T off);
260 int llu_vmtruncate(struct inode * inode, loff_t offset, obd_flag obd_flags);
261 void obdo_refresh_inode(struct inode *dst, struct obdo *src, obd_flag valid);
262 int llu_objects_destroy(struct ptlrpc_request *request, struct inode *dir);
263 void llu_ioepoch_open(struct llu_inode_info *lli, __u64 ioepoch);
266 int llu_iop_read(struct inode *ino, struct ioctx *ioctxp);
267 int llu_iop_write(struct inode *ino, struct ioctx *ioctxp);
268 int llu_iop_iodone(struct ioctx *ioctxp);
269 int llu_glimpse_size(struct inode *inode);
270 int llu_extent_lock(struct ll_file_data *fd, struct inode *inode,
271 struct lov_stripe_md *lsm, int mode,
272 ldlm_policy_data_t *policy, struct lustre_handle *lockh,
274 int llu_extent_unlock(struct ll_file_data *fd, struct inode *inode,
275 struct lov_stripe_md *lsm, int mode,
276 struct lustre_handle *lockh);
279 int llu_iop_lookup(struct pnode *pnode,
281 struct intent *intnt,
283 void unhook_stale_inode(struct pnode *pno);
284 struct inode *llu_inode_from_lock(struct ldlm_lock *lock);
285 int llu_md_blocking_ast(struct ldlm_lock *lock,
286 struct ldlm_lock_desc *desc,
287 void *data, int flag);
290 ssize_t llu_iop_filldirentries(struct inode *ino, _SYSIO_OFF_T *basep,
291 char *buf, size_t nbytes);
293 /* liblustre/llite_fid.c*/
294 unsigned long llu_fid_build_ino(struct llu_sb_info *sbi,
298 #define EXT2_NAME_LEN (255)
305 char name[EXT2_NAME_LEN];
308 #define EXT2_DIR_PAD 4
309 #define EXT2_DIR_ROUND (EXT2_DIR_PAD - 1)
310 #define EXT2_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT2_DIR_ROUND) & \
313 static inline struct ext2_dirent *ext2_next_entry(struct ext2_dirent *p)
315 return (struct ext2_dirent*)((char*) p + le16_to_cpu(p->rec_len));
318 int llu_merge_lvb(struct inode *inode);
320 static inline void inode_init_lvb(struct inode *inode, struct ost_lvb *lvb)
322 struct intnl_stat *st = llu_i2stat(inode);
323 lvb->lvb_size = st->st_size;
324 lvb->lvb_blocks = st->st_blocks;
325 lvb->lvb_mtime = st->st_mtime;
326 lvb->lvb_atime = st->st_atime;
327 lvb->lvb_ctime = st->st_ctime;
330 #define LLU_IO_GROUP_SIZE(x) \
331 (sizeof(struct llu_io_group) + \
332 (sizeof(struct ll_async_page) + \
333 sizeof(cfs_page_t) + \
334 llap_cookie_size) * (x))
336 struct llu_io_session {
337 struct inode *lis_inode;
347 struct lustre_rw_params *lig_params;
352 struct llu_io_session;
353 void put_io_group(struct llu_io_group *group);
355 int cl_sb_init(struct llu_sb_info *sbi);
356 int cl_sb_fini(struct llu_sb_info *sbi);
357 int cl_inode_init(struct inode *inode, struct lustre_md *md);
358 void cl_inode_fini(struct inode *inode);
360 void llu_io_init(struct cl_io *io, struct inode *inode, int write);
363 struct llu_io_session *sio_session;
367 struct slp_io ss_ios;
370 static inline struct slp_session *slp_env_session(const struct lu_env *env)
372 extern struct lu_context_key slp_session_key;
373 struct slp_session *ses;
374 ses = lu_context_key_get(env->le_ses, &slp_session_key);
375 LASSERT(ses != NULL);
378 static inline struct slp_io *slp_env_io(const struct lu_env *env)
380 return &slp_env_session(env)->ss_ios;
383 /* lclient compat stuff */
384 #define cl_inode_info llu_inode_info
385 #define cl_i2info(info) llu_i2info(info)
386 #define cl_inode_mode(inode) (llu_i2stat(inode)->st_mode)
387 #define cl_i2sbi llu_i2sbi
388 #define cl_isize_read(inode) (llu_i2stat(inode)->st_size)
389 #define cl_isize_write(inode,kms) do{llu_i2stat(inode)->st_size = kms;}while(0)
390 #define cl_isize_write_nolock(inode,kms) cl_isize_write(inode,kms)
392 static inline void cl_isize_lock(struct inode *inode, int lsmlock)
396 static inline void cl_isize_unlock(struct inode *inode, int lsmlock)
400 static inline int cl_merge_lvb(struct inode *inode)
402 return llu_merge_lvb(inode);
405 #define cl_inode_atime(inode) (llu_i2stat(inode)->st_atime)
406 #define cl_inode_ctime(inode) (llu_i2stat(inode)->st_ctime)
407 #define cl_inode_mtime(inode) (llu_i2stat(inode)->st_mtime)
409 static inline struct obd_capa *cl_capa_lookup(struct inode *inode,
410 enum cl_req_type crt)