/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: * * GPL HEADER START * * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 only, * as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License version 2 for more details (a copy is included * in the LICENSE file that accompanied this code). * * You should have received a copy of the GNU General Public License * version 2 along with this program; If not, see * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * * GPL HEADER END */ /* * Copyright 2008 Sun Microsystems, Inc. All rights reserved * Use is subject to license terms. */ /* * This file is part of Lustre, http://www.lustre.org/ * Lustre is a trademark of Sun Microsystems, Inc. */ #ifndef _MDS_INTERNAL_H #define _MDS_INTERNAL_H #include #include #define MDT_ROCOMPAT_SUPP (OBD_ROCOMPAT_LOVOBJID) #define MDT_INCOMPAT_SUPP (OBD_INCOMPAT_MDT | OBD_INCOMPAT_COMMON_LR | \ OBD_INCOMPAT_FID) #define MDS_SERVICE_WATCHDOG_FACTOR 2000 #define MAX_ATIME_DIFF 60 struct mds_filter_data { __u64 io_epoch; }; #define MDS_FILTERDATA(inode) \ ((struct mds_filter_data *)INODE_PRIVATE_DATA(inode)) static inline struct mds_obd *mds_req2mds(struct ptlrpc_request *req) { return &req->rq_export->exp_obd->u.mds; } static inline void mds_export_evict(struct obd_export *exp) { class_fail_export(exp); class_export_put(exp); } #ifdef __KERNEL__ /* Open counts for files. No longer atomic, must hold inode->i_sem */ # define mds_inode_oatomic(inode) ((inode)->i_cindex) #ifdef HAVE_I_ALLOC_SEM #define MDS_UP_READ_ORPHAN_SEM(i) UP_READ_I_ALLOC_SEM(i) #define MDS_DOWN_READ_ORPHAN_SEM(i) DOWN_READ_I_ALLOC_SEM(i) #define LASSERT_MDS_ORPHAN_READ_LOCKED(i) LASSERT_I_ALLOC_SEM_READ_LOCKED(i) #define MDS_UP_WRITE_ORPHAN_SEM(i) UP_WRITE_I_ALLOC_SEM(i) #define MDS_DOWN_WRITE_ORPHAN_SEM(i) DOWN_WRITE_I_ALLOC_SEM(i) #define LASSERT_MDS_ORPHAN_WRITE_LOCKED(i) LASSERT_I_ALLOC_SEM_WRITE_LOCKED(i) #define MDS_PACK_MD_LOCK 1 #else #define MDS_UP_READ_ORPHAN_SEM(i) do { up(&(i)->i_sem); } while (0) #define MDS_DOWN_READ_ORPHAN_SEM(i) do { down(&(i)->i_sem); } while (0) #define LASSERT_MDS_ORPHAN_READ_LOCKED(i) LASSERT(down_trylock(&(i)->i_sem)!=0) #define MDS_UP_WRITE_ORPHAN_SEM(i) do { up(&(i)->i_sem); } while (0) #define MDS_DOWN_WRITE_ORPHAN_SEM(i) do { down(&(i)->i_sem); } while (0) #define LASSERT_MDS_ORPHAN_WRITE_LOCKED(i) LASSERT(down_trylock(&(i)->i_sem)!=0) #define MDS_PACK_MD_LOCK 0 #endif static inline int mds_orphan_open_count(struct inode *inode) { LASSERT_MDS_ORPHAN_READ_LOCKED(inode); return mds_inode_oatomic(inode); } static inline int mds_orphan_needed(struct obd_device *obd, struct inode * inode) { return (obd->obd_recovering || mds_orphan_open_count(inode) > 0); } static inline int mds_orphan_open_inc(struct inode *inode) { LASSERT_MDS_ORPHAN_WRITE_LOCKED(inode); return ++mds_inode_oatomic(inode); } static inline int mds_orphan_open_dec_test(struct inode *inode) { LASSERT_MDS_ORPHAN_WRITE_LOCKED(inode); return --mds_inode_oatomic(inode) == 0; } #define mds_inode_is_orphan(inode) ((inode)->i_flags & 0x4000000) static inline void mds_inode_set_orphan(struct inode *inode) { inode->i_flags |= 0x4000000; CDEBUG(D_VFSTRACE, "setting orphan flag on inode %p\n", inode); } static inline void mds_inode_unset_orphan(struct inode *inode) { inode->i_flags &= ~(0x4000000); CDEBUG(D_VFSTRACE, "removing orphan flag from inode %p\n", inode); } #endif /* __KERNEL__ */ #define MDS_CHECK_RESENT(req, reconstruct) \ { \ if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) { \ struct lsd_client_data *lcd = \ req->rq_export->exp_mds_data.med_lcd; \ if (le64_to_cpu(lcd->lcd_last_xid) == req->rq_xid) { \ reconstruct; \ RETURN(le32_to_cpu(lcd->lcd_last_result)); \ } \ if (le64_to_cpu(lcd->lcd_last_close_xid) == req->rq_xid) { \ reconstruct; \ RETURN(le32_to_cpu(lcd->lcd_last_close_result)); \ } \ DEBUG_REQ(D_HA, req, "no reply for RESENT req (have "LPD64")",\ lcd->lcd_last_xid); \ } \ } /* mds/mds_reint.c */ int res_gt(struct ldlm_res_id *res1, struct ldlm_res_id *res2, ldlm_policy_data_t *p1, ldlm_policy_data_t *p2); int enqueue_ordered_locks(struct obd_device *obd, struct ldlm_res_id *p1_res_id, struct lustre_handle *p1_lockh, int p1_lock_mode, ldlm_policy_data_t *p1_policy, struct ldlm_res_id *p2_res_id, struct lustre_handle *p2_lockh, int p2_lock_mode, ldlm_policy_data_t *p2_policy); void mds_commit_cb(struct obd_device *, __u64 last_rcvd, void *data, int error); int mds_finish_transno(struct mds_obd *, struct inode **, void *, struct ptlrpc_request *, int, __u32, int force_sync); void mds_reconstruct_generic(struct ptlrpc_request *req); void mds_req_from_lcd(struct ptlrpc_request *req, struct lsd_client_data *cd); int mds_get_parent_child_locked(struct obd_device *obd, struct mds_obd *mds, struct ll_fid *fid, struct lustre_handle *parent_lockh, struct dentry **dparentp, int parent_mode, __u64 parent_lockpart, char *name, int namelen, struct lustre_handle *child_lockh, struct dentry **dchildp, int child_mode, __u64 child_lockpart); int mds_lock_new_child(struct obd_device *obd, struct inode *inode, struct lustre_handle *child_lockh); int mds_osc_setattr_async(struct obd_device *obd, struct inode *inode, struct lov_mds_md *lmm, int lmm_size, struct llog_cookie *logcookies, struct ll_fid *fid); int mds_get_parents_children_locked(struct obd_device *obd, struct mds_obd *mds, struct ll_fid *p1_fid, struct dentry **de_srcdirp, struct ll_fid *p2_fid, struct dentry **de_tgtdirp, int parent_mode, const char *old_name, int old_len, struct dentry **de_oldp, const char *new_name, int new_len, struct dentry **de_newp, struct lustre_handle *dlm_handles, int child_mode); struct dentry *mds_lookup(struct obd_device *obd, const char *fid_name, struct dentry *dparent, int fid_namelen); void mds_shrink_reply(struct obd_device *obd, struct ptlrpc_request *req, struct mds_body *body, int md_off); int mds_get_cookie_size(struct obd_device *obd, struct lov_mds_md *lmm); int mds_version_get_check(struct ptlrpc_request *, struct inode *, int); /* mds/mds_lib.c */ int mds_update_unpack(struct ptlrpc_request *, int offset, struct mds_update_record *); int mds_init_ucred(struct lvfs_ucred *ucred, struct ptlrpc_request *req, int offset); void mds_exit_ucred(struct lvfs_ucred *ucred, struct mds_obd *obd); void mds_root_squash(struct mds_obd *mds, lnet_nid_t *peernid, __u32 *fsuid, __u32 *fsgid, cfs_kernel_cap_t *cap, __u32 *suppgid, __u32 *suppgid2); /* mds/mds_unlink_open.c */ int mds_osc_destroy_orphan(struct obd_device *obd, umode_t mode, struct lov_mds_md *lmm, int lmm_size, struct llog_cookie *logcookies, int log_unlink); int mds_cleanup_pending(struct obd_device *obd); int mds_check_stale_orphan(struct obd_device *obd, struct ll_fid *fid); /* mds/mds_log.c */ int mds_log_op_unlink(struct obd_device *obd, struct lov_mds_md *lmm, int lmm_size, struct llog_cookie *logcookies, int cookies_size); int mds_log_op_orphan(struct obd_device *, struct lov_stripe_md *, obd_count); int mds_log_op_setattr(struct obd_device *obd, struct inode *inode, struct lov_mds_md *lmm, int lmm_size, struct llog_cookie *logcookies, int cookies_size); int mds_llog_init(struct obd_device *obd, struct obd_device *tgt, int count, struct llog_catid *logid, struct obd_uuid *uuid); int mds_llog_finish(struct obd_device *obd, int count); /* mds/mds_lov.c */ int mds_lov_connect(struct obd_device *obd, char * lov_name); int mds_lov_disconnect(struct obd_device *obd); int mds_lov_write_objids(struct obd_device *obd); int mds_lov_prepare_objids(struct obd_device *obd, struct lov_mds_md *lmm); void mds_lov_update_objids(struct obd_device *obd, struct lov_mds_md *lmm); int mds_lov_clear_orphans(struct mds_obd *mds, struct obd_uuid *ost_uuid); int mds_lov_start_synchronize(struct obd_device *obd, struct obd_device *watched, void *data, int nonblock); int mds_post_mds_lovconf(struct obd_device *obd); int mds_notify(struct obd_device *obd, struct obd_device *watched, enum obd_notify_event ev, void *data); int mds_get_default_md(struct obd_device *obd, struct lov_mds_md *lmm, int *lmmsize); int mds_convert_lov_ea(struct obd_device *obd, struct inode *inode, struct lov_mds_md *lmm, int lmm_size, __u64 connect_flags); int mds_init_lov_desc(struct obd_device *obd, struct obd_export *osc_exp); /* mds/mds_open.c */ int mds_query_write_access(struct inode *inode); int mds_open(struct mds_update_record *rec, int offset, struct ptlrpc_request *req, struct lustre_handle *); int mds_pin(struct ptlrpc_request *req, int offset); void mds_mfd_unlink(struct mds_file_data *mfd, int decref); int mds_mfd_close(struct ptlrpc_request *req, int offset,struct obd_device *obd, struct mds_file_data *mfd, int unlink_orphan, struct lov_mds_md *lmm, int lmm_size, struct llog_cookie *logcookies, int cookies_size, __u64 *valid); int mds_close(struct ptlrpc_request *req, int offset); int mds_done_writing(struct ptlrpc_request *req, int offset); /*mds/mds_join.c*/ int mds_join_file(struct mds_update_record *rec, struct ptlrpc_request *req, struct dentry *dchild, struct lustre_handle *lockh); /* mds/mds_fs.c */ int mds_update_client_epoch(struct obd_export *exp); void mds_update_last_epoch(struct obd_device *obd); int mds_export_stats_init(struct obd_device *obd, struct obd_export *exp, void *client_nid); int mds_client_add(struct obd_device *obd, struct obd_export *exp, int cl_off, void *localdata); int mds_client_free(struct obd_export *exp); int mds_obd_create(struct obd_export *exp, struct obdo *oa, struct lov_stripe_md **ea, struct obd_trans_info *oti); int mds_obd_destroy(struct obd_export *exp, struct obdo *oa, struct lov_stripe_md *ea, struct obd_trans_info *oti, struct obd_export *md_exp); /* mds/handler.c */ extern struct lvfs_callback_ops mds_lvfs_ops; extern int mds_iocontrol(unsigned int cmd, struct obd_export *exp, int len, void *karg, void *uarg); int mds_postrecov(struct obd_device *obd); int mds_init_export(struct obd_export *exp); #ifdef __KERNEL__ int mds_get_md(struct obd_device *, struct inode *, void *md, int *size, int lock, int flags, __u64 connect_flags); int mds_pack_md(struct obd_device *, struct lustre_msg *, int offset, struct mds_body *, struct inode *, int lock, int flags, __u64 connect_flags); void mds_pack_inode2body(struct mds_body *body, struct inode *inode); #endif int mds_pack_acl(struct mds_export_data *med, struct inode *inode, struct lustre_msg *repmsg, struct mds_body *repbody, int repoff); /* quota stuff */ extern quota_interface_t *mds_quota_interface_ref; /* mds/mds_xattr.c */ int mds_setxattr(struct ptlrpc_request *req); int mds_getxattr(struct ptlrpc_request *req); /* mds/lproc_mds.c */ enum { LPROC_MDS_OPEN = 0, LPROC_MDS_CLOSE, LPROC_MDS_MKNOD, LPROC_MDS_LINK, LPROC_MDS_UNLINK, LPROC_MDS_MKDIR, LPROC_MDS_RMDIR, LPROC_MDS_RENAME, LPROC_MDS_GETXATTR, LPROC_MDS_SETXATTR, LPROC_MDS_LAST, }; void mds_counter_incr(struct obd_export *exp, int opcode); void mds_stats_counter_init(struct lprocfs_stats *stats); void lprocfs_mds_init_vars(struct lprocfs_static_vars *lvars); void lprocfs_mdt_init_vars(struct lprocfs_static_vars *lvars); #endif /* _MDS_INTERNAL_H */