/* -*- 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. * * lustre/osd/osd_handler.c * * Top-level entry points into osd module * * Author: Nikita Danilov */ #ifndef EXPORT_SYMTAB # define EXPORT_SYMTAB #endif #define DEBUG_SUBSYSTEM S_MDS #include /* LUSTRE_VERSION_CODE */ #include /* prerequisite for linux/xattr.h */ #include /* prerequisite for linux/xattr.h */ #include /* XATTR_{REPLACE,CREATE} */ #include /* simple_mkdir() */ #include /* * struct OBD_{ALLOC,FREE}*() * OBD_FAIL_CHECK */ #include /* struct ptlrpc_thread */ #include /* fid_is_local() */ #include #include "osd_internal.h" #include "osd_igif.h" /* llo_* api support */ #include static const char dot[] = "."; static const char dotdot[] = ".."; static const char remote_obj_dir[] = "REM_OBJ_DIR"; struct osd_directory { struct iam_container od_container; struct iam_descr od_descr; }; struct osd_object { struct dt_object oo_dt; /** * Inode for file system object represented by this osd_object. This * inode is pinned for the whole duration of lu_object life. * * Not modified concurrently (either setup early during object * creation, or assigned by osd_object_create() under write lock). */ struct inode *oo_inode; /** * to protect index ops. */ cfs_rw_semaphore_t oo_ext_idx_sem; cfs_rw_semaphore_t oo_sem; struct osd_directory *oo_dir; /** protects inode attributes. */ cfs_spinlock_t oo_guard; /** * Following two members are used to indicate the presence of dot and * dotdot in the given directory. This is required for interop mode * (b11826). */ int oo_compat_dot_created; int oo_compat_dotdot_created; const struct lu_env *oo_owner; #ifdef CONFIG_LOCKDEP struct lockdep_map oo_dep_map; #endif }; static const struct lu_object_operations osd_lu_obj_ops; static const struct lu_device_operations osd_lu_ops; static struct lu_context_key osd_key; static const struct dt_object_operations osd_obj_ops; static const struct dt_object_operations osd_obj_ea_ops; static const struct dt_body_operations osd_body_ops; static const struct dt_index_operations osd_index_iam_ops; static const struct dt_index_operations osd_index_ea_ops; struct osd_thandle { struct thandle ot_super; handle_t *ot_handle; struct journal_callback ot_jcb; /* Link to the device, for debugging. */ struct lu_ref_link *ot_dev_link; }; /* * Helpers. */ static int lu_device_is_osd(const struct lu_device *d) { return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &osd_lu_ops); } static struct osd_device *osd_dt_dev(const struct dt_device *d) { LASSERT(lu_device_is_osd(&d->dd_lu_dev)); return container_of0(d, struct osd_device, od_dt_dev); } static struct osd_device *osd_dev(const struct lu_device *d) { LASSERT(lu_device_is_osd(d)); return osd_dt_dev(container_of0(d, struct dt_device, dd_lu_dev)); } static struct osd_device *osd_obj2dev(const struct osd_object *o) { return osd_dev(o->oo_dt.do_lu.lo_dev); } static struct super_block *osd_sb(const struct osd_device *dev) { return dev->od_mount->lmi_mnt->mnt_sb; } static int osd_object_is_root(const struct osd_object *obj) { return osd_sb(osd_obj2dev(obj))->s_root->d_inode == obj->oo_inode; } static struct osd_object *osd_obj(const struct lu_object *o) { LASSERT(lu_device_is_osd(o->lo_dev)); return container_of0(o, struct osd_object, oo_dt.do_lu); } static struct osd_object *osd_dt_obj(const struct dt_object *d) { return osd_obj(&d->do_lu); } static struct lu_device *osd2lu_dev(struct osd_device *osd) { return &osd->od_dt_dev.dd_lu_dev; } static journal_t *osd_journal(const struct osd_device *dev) { return LDISKFS_SB(osd_sb(dev))->s_journal; } static int osd_has_index(const struct osd_object *obj) { return obj->oo_dt.do_index_ops != NULL; } static int osd_object_invariant(const struct lu_object *l) { return osd_invariant(osd_obj(l)); } #ifdef HAVE_QUOTA_SUPPORT static inline void osd_push_ctxt(const struct lu_env *env, struct osd_ctxt *save) { struct md_ucred *uc = md_ucred(env); LASSERT(uc != NULL); save->oc_uid = current->fsuid; save->oc_gid = current->fsgid; save->oc_cap = current->cap_effective; current->fsuid = uc->mu_fsuid; current->fsgid = uc->mu_fsgid; current->cap_effective = uc->mu_cap; } static inline void osd_pop_ctxt(struct osd_ctxt *save) { current->fsuid = save->oc_uid; current->fsgid = save->oc_gid; current->cap_effective = save->oc_cap; } #endif static inline struct osd_thread_info *osd_oti_get(const struct lu_env *env) { return lu_context_key_get(&env->le_ctx, &osd_key); } /* * Concurrency: doesn't matter */ static int osd_read_locked(const struct lu_env *env, struct osd_object *o) { return osd_oti_get(env)->oti_r_locks > 0; } /* * Concurrency: doesn't matter */ static int osd_write_locked(const struct lu_env *env, struct osd_object *o) { struct osd_thread_info *oti = osd_oti_get(env); return oti->oti_w_locks > 0 && o->oo_owner == env; } /* * Concurrency: doesn't access mutable data */ static int osd_root_get(const struct lu_env *env, struct dt_device *dev, struct lu_fid *f) { struct inode *inode; inode = osd_sb(osd_dt_dev(dev))->s_root->d_inode; lu_igif_build(f, inode->i_ino, inode->i_generation); return 0; } /* * OSD object methods. */ /* * Concurrency: no concurrent access is possible that early in object * life-cycle. */ static struct lu_object *osd_object_alloc(const struct lu_env *env, const struct lu_object_header *hdr, struct lu_device *d) { struct osd_object *mo; OBD_ALLOC_PTR(mo); if (mo != NULL) { struct lu_object *l; l = &mo->oo_dt.do_lu; dt_object_init(&mo->oo_dt, NULL, d); if (osd_dev(d)->od_iop_mode) mo->oo_dt.do_ops = &osd_obj_ea_ops; else mo->oo_dt.do_ops = &osd_obj_ops; l->lo_ops = &osd_lu_obj_ops; cfs_init_rwsem(&mo->oo_sem); cfs_init_rwsem(&mo->oo_ext_idx_sem); cfs_spin_lock_init(&mo->oo_guard); return l; } else return NULL; } /* * retrieve object from backend ext fs. **/ static struct inode *osd_iget(struct osd_thread_info *info, struct osd_device *dev, const struct osd_inode_id *id) { struct inode *inode = NULL; #ifdef HAVE_EXT4_LDISKFS inode = ldiskfs_iget(osd_sb(dev), id->oii_ino); if (IS_ERR(inode)) /* Newer kernels return an error instead of a NULL pointer */ inode = NULL; #else inode = iget(osd_sb(dev), id->oii_ino); #endif if (inode == NULL) { CERROR("no inode\n"); inode = ERR_PTR(-EACCES); } else if (id->oii_gen != OSD_OII_NOGEN && inode->i_generation != id->oii_gen) { iput(inode); inode = ERR_PTR(-ESTALE); } else if (inode->i_nlink == 0) { /* due to parallel readdir and unlink, * we can have dead inode here. */ CWARN("stale inode\n"); make_bad_inode(inode); iput(inode); inode = ERR_PTR(-ESTALE); } else if (is_bad_inode(inode)) { CERROR("bad inode %lx\n",inode->i_ino); iput(inode); inode = ERR_PTR(-ENOENT); } return inode; } static int osd_fid_lookup(const struct lu_env *env, struct osd_object *obj, const struct lu_fid *fid) { struct osd_thread_info *info; struct lu_device *ldev = obj->oo_dt.do_lu.lo_dev; struct osd_device *dev; struct osd_inode_id *id; struct osd_oi *oi; struct inode *inode; int result; LINVRNT(osd_invariant(obj)); LASSERT(obj->oo_inode == NULL); LASSERT(fid_is_sane(fid)); /* * This assertion checks that osd layer sees only local * fids. Unfortunately it is somewhat expensive (does a * cache-lookup). Disabling it for production/acceptance-testing. */ LASSERT(1 || fid_is_local(env, ldev->ld_site, fid)); ENTRY; info = osd_oti_get(env); dev = osd_dev(ldev); id = &info->oti_id; oi = &dev->od_oi; if (OBD_FAIL_CHECK(OBD_FAIL_OST_ENOENT)) RETURN(-ENOENT); result = osd_oi_lookup(info, oi, fid, id); if (result == 0) { inode = osd_iget(info, dev, id); if (!IS_ERR(inode)) { obj->oo_inode = inode; LASSERT(obj->oo_inode->i_sb == osd_sb(dev)); if (dev->od_iop_mode) { obj->oo_compat_dot_created = 1; obj->oo_compat_dotdot_created = 1; } result = 0; } else /* * If fid wasn't found in oi, inode-less object is * created, for which lu_object_exists() returns * false. This is used in a (frequent) case when * objects are created as locking anchors or * place holders for objects yet to be created. */ result = PTR_ERR(inode); } else if (result == -ENOENT) result = 0; LINVRNT(osd_invariant(obj)); RETURN(result); } /* * Concurrency: shouldn't matter. */ static void osd_object_init0(struct osd_object *obj) { LASSERT(obj->oo_inode != NULL); obj->oo_dt.do_body_ops = &osd_body_ops; obj->oo_dt.do_lu.lo_header->loh_attr |= (LOHA_EXISTS | (obj->oo_inode->i_mode & S_IFMT)); } /* * Concurrency: no concurrent access is possible that early in object * life-cycle. */ static int osd_object_init(const struct lu_env *env, struct lu_object *l, const struct lu_object_conf *unused) { struct osd_object *obj = osd_obj(l); int result; LINVRNT(osd_invariant(obj)); result = osd_fid_lookup(env, obj, lu_object_fid(l)); if (result == 0) { if (obj->oo_inode != NULL) osd_object_init0(obj); } LINVRNT(osd_invariant(obj)); return result; } /* * Concurrency: no concurrent access is possible that late in object * life-cycle. */ static void osd_object_free(const struct lu_env *env, struct lu_object *l) { struct osd_object *obj = osd_obj(l); LINVRNT(osd_invariant(obj)); dt_object_fini(&obj->oo_dt); OBD_FREE_PTR(obj); } /** * IAM Iterator */ static struct iam_path_descr *osd_it_ipd_get(const struct lu_env *env, const struct iam_container *bag) { return bag->ic_descr->id_ops->id_ipd_alloc(bag, osd_oti_get(env)->oti_it_ipd); } static struct iam_path_descr *osd_idx_ipd_get(const struct lu_env *env, const struct iam_container *bag) { return bag->ic_descr->id_ops->id_ipd_alloc(bag, osd_oti_get(env)->oti_idx_ipd); } static void osd_ipd_put(const struct lu_env *env, const struct iam_container *bag, struct iam_path_descr *ipd) { bag->ic_descr->id_ops->id_ipd_free(ipd); } /* * Concurrency: no concurrent access is possible that late in object * life-cycle. */ static void osd_index_fini(struct osd_object *o) { struct iam_container *bag; if (o->oo_dir != NULL) { bag = &o->oo_dir->od_container; if (o->oo_inode != NULL) { if (bag->ic_object == o->oo_inode) iam_container_fini(bag); } OBD_FREE_PTR(o->oo_dir); o->oo_dir = NULL; } } /* * Concurrency: no concurrent access is possible that late in object * life-cycle (for all existing callers, that is. New callers have to provide * their own locking.) */ static int osd_inode_unlinked(const struct inode *inode) { return inode->i_nlink == 0; } enum { OSD_TXN_OI_DELETE_CREDITS = 20, OSD_TXN_INODE_DELETE_CREDITS = 20 }; /* * Journal */ /* * Concurrency: doesn't access mutable data. */ static int osd_param_is_sane(const struct osd_device *dev, const struct txn_param *param) { return param->tp_credits <= osd_journal(dev)->j_max_transaction_buffers; } /* * Concurrency: shouldn't matter. */ static void osd_trans_commit_cb(struct journal_callback *jcb, int error) { struct osd_thandle *oh = container_of0(jcb, struct osd_thandle, ot_jcb); struct thandle *th = &oh->ot_super; struct dt_device *dev = th->th_dev; struct lu_device *lud = &dev->dd_lu_dev; LASSERT(dev != NULL); LASSERT(oh->ot_handle == NULL); if (error) { CERROR("transaction @0x%p commit error: %d\n", th, error); } else { struct lu_env *env = &osd_dt_dev(dev)->od_env_for_commit; /* * This od_env_for_commit is only for commit usage. see * "struct dt_device" */ lu_context_enter(&env->le_ctx); dt_txn_hook_commit(env, th); lu_context_exit(&env->le_ctx); } lu_ref_del_at(&lud->ld_reference, oh->ot_dev_link, "osd-tx", th); lu_device_put(lud); th->th_dev = NULL; lu_context_exit(&th->th_ctx); lu_context_fini(&th->th_ctx); OBD_FREE_PTR(oh); } /* * Concurrency: shouldn't matter. */ static struct thandle *osd_trans_start(const struct lu_env *env, struct dt_device *d, struct txn_param *p) { struct osd_device *dev = osd_dt_dev(d); handle_t *jh; struct osd_thandle *oh; struct thandle *th; int hook_res; ENTRY; hook_res = dt_txn_hook_start(env, d, p); if (hook_res != 0) RETURN(ERR_PTR(hook_res)); if (osd_param_is_sane(dev, p)) { OBD_ALLOC_GFP(oh, sizeof *oh, CFS_ALLOC_IO); if (oh != NULL) { struct osd_thread_info *oti = osd_oti_get(env); /* * XXX temporary stuff. Some abstraction layer should * be used. */ jh = ldiskfs_journal_start_sb(osd_sb(dev), p->tp_credits); if (!IS_ERR(jh)) { oh->ot_handle = jh; th = &oh->ot_super; th->th_dev = d; th->th_result = 0; jh->h_sync = p->tp_sync; lu_device_get(&d->dd_lu_dev); oh->ot_dev_link = lu_ref_add (&d->dd_lu_dev.ld_reference, "osd-tx", th); /* add commit callback */ lu_context_init(&th->th_ctx, LCT_TX_HANDLE); lu_context_enter(&th->th_ctx); osd_journal_callback_set(jh, osd_trans_commit_cb, (struct journal_callback *)&oh->ot_jcb); LASSERT(oti->oti_txns == 0); LASSERT(oti->oti_r_locks == 0); LASSERT(oti->oti_w_locks == 0); oti->oti_txns++; } else { OBD_FREE_PTR(oh); th = (void *)jh; } } else th = ERR_PTR(-ENOMEM); } else { CERROR("Invalid transaction parameters\n"); th = ERR_PTR(-EINVAL); } RETURN(th); } /* * Concurrency: shouldn't matter. */ static void osd_trans_stop(const struct lu_env *env, struct thandle *th) { int result; struct osd_thandle *oh; struct osd_thread_info *oti = osd_oti_get(env); ENTRY; oh = container_of0(th, struct osd_thandle, ot_super); if (oh->ot_handle != NULL) { handle_t *hdl = oh->ot_handle; LASSERT(oti->oti_txns == 1); oti->oti_txns--; LASSERT(oti->oti_r_locks == 0); LASSERT(oti->oti_w_locks == 0); result = dt_txn_hook_stop(env, th); if (result != 0) CERROR("Failure in transaction hook: %d\n", result); oh->ot_handle = NULL; result = ldiskfs_journal_stop(hdl); if (result != 0) CERROR("Failure to stop transaction: %d\n", result); } EXIT; } /* * Concurrency: no concurrent access is possible that late in object * life-cycle. */ static int osd_inode_remove(const struct lu_env *env, struct osd_object *obj) { const struct lu_fid *fid = lu_object_fid(&obj->oo_dt.do_lu); struct osd_device *osd = osd_obj2dev(obj); struct osd_thread_info *oti = osd_oti_get(env); struct txn_param *prm = &oti->oti_txn; struct lu_env *env_del_obj = &oti->oti_obj_delete_tx_env; struct thandle *th; int result; lu_env_init(env_del_obj, LCT_DT_THREAD); txn_param_init(prm, OSD_TXN_OI_DELETE_CREDITS + OSD_TXN_INODE_DELETE_CREDITS); th = osd_trans_start(env_del_obj, &osd->od_dt_dev, prm); if (!IS_ERR(th)) { result = osd_oi_delete(osd_oti_get(env_del_obj), &osd->od_oi, fid, th); osd_trans_stop(env_del_obj, th); } else result = PTR_ERR(th); lu_env_fini(env_del_obj); return result; } /* * Called just before object is freed. Releases all resources except for * object itself (that is released by osd_object_free()). * * Concurrency: no concurrent access is possible that late in object * life-cycle. */ static void osd_object_delete(const struct lu_env *env, struct lu_object *l) { struct osd_object *obj = osd_obj(l); struct inode *inode = obj->oo_inode; LINVRNT(osd_invariant(obj)); /* * If object is unlinked remove fid->ino mapping from object index. */ osd_index_fini(obj); if (inode != NULL) { int result; if (osd_inode_unlinked(inode)) { result = osd_inode_remove(env, obj); if (result != 0) LU_OBJECT_DEBUG(D_ERROR, env, l, "Failed to cleanup: %d\n", result); } iput(inode); obj->oo_inode = NULL; } } /* * Concurrency: ->loo_object_release() is called under site spin-lock. */ static void osd_object_release(const struct lu_env *env, struct lu_object *l) { struct osd_object *o = osd_obj(l); LASSERT(!lu_object_is_dying(l->lo_header)); if (o->oo_inode != NULL && osd_inode_unlinked(o->oo_inode)) cfs_set_bit(LU_OBJECT_HEARD_BANSHEE, &l->lo_header->loh_flags); } /* * Concurrency: shouldn't matter. */ static int osd_object_print(const struct lu_env *env, void *cookie, lu_printer_t p, const struct lu_object *l) { struct osd_object *o = osd_obj(l); struct iam_descr *d; if (o->oo_dir != NULL) d = o->oo_dir->od_container.ic_descr; else d = NULL; return (*p)(env, cookie, LUSTRE_OSD_NAME"-object@%p(i:%p:%lu/%u)[%s]", o, o->oo_inode, o->oo_inode ? o->oo_inode->i_ino : 0UL, o->oo_inode ? o->oo_inode->i_generation : 0, d ? d->id_ops->id_name : "plain"); } /* * Concurrency: shouldn't matter. */ int osd_statfs(const struct lu_env *env, struct dt_device *d, cfs_kstatfs_t *sfs) { struct osd_device *osd = osd_dt_dev(d); struct super_block *sb = osd_sb(osd); int result = 0; cfs_spin_lock(&osd->od_osfs_lock); /* cache 1 second */ if (cfs_time_before_64(osd->od_osfs_age, cfs_time_shift_64(-1))) { result = ll_do_statfs(sb, &osd->od_kstatfs); if (likely(result == 0)) /* N.B. statfs can't really fail */ osd->od_osfs_age = cfs_time_current_64(); } if (likely(result == 0)) *sfs = osd->od_kstatfs; cfs_spin_unlock(&osd->od_osfs_lock); return result; } /* * Concurrency: doesn't access mutable data. */ static void osd_conf_get(const struct lu_env *env, const struct dt_device *dev, struct dt_device_param *param) { /* * XXX should be taken from not-yet-existing fs abstraction layer. */ param->ddp_max_name_len = LDISKFS_NAME_LEN; param->ddp_max_nlink = LDISKFS_LINK_MAX; param->ddp_block_shift = osd_sb(osd_dt_dev(dev))->s_blocksize_bits; } /** * Helper function to get and fill the buffer with input values. */ static struct lu_buf *osd_buf_get(const struct lu_env *env, void *area, ssize_t len) { struct lu_buf *buf; buf = &osd_oti_get(env)->oti_buf; buf->lb_buf = area; buf->lb_len = len; return buf; } /* * Concurrency: shouldn't matter. */ static int osd_sync(const struct lu_env *env, struct dt_device *d) { CDEBUG(D_HA, "syncing OSD %s\n", LUSTRE_OSD_NAME); return ldiskfs_force_commit(osd_sb(osd_dt_dev(d))); } /** * Start commit for OSD device. * * An implementation of dt_commit_async method for OSD device. * Asychronously starts underlayng fs sync and thereby a transaction * commit. * * \param env environment * \param d dt device * * \see dt_device_operations */ static int osd_commit_async(const struct lu_env *env, struct dt_device *d) { struct super_block *s = osd_sb(osd_dt_dev(d)); ENTRY; CDEBUG(D_HA, "async commit OSD %s\n", LUSTRE_OSD_NAME); RETURN(s->s_op->sync_fs(s, 0)); } /* * Concurrency: shouldn't matter. */ lvfs_sbdev_type fsfilt_ldiskfs_journal_sbdev(struct super_block *); static void osd_ro(const struct lu_env *env, struct dt_device *d) { ENTRY; CERROR("*** setting device %s read-only ***\n", LUSTRE_OSD_NAME); __lvfs_set_rdonly(lvfs_sbdev(osd_sb(osd_dt_dev(d))), fsfilt_ldiskfs_journal_sbdev(osd_sb(osd_dt_dev(d)))); EXIT; } /* * Concurrency: serialization provided by callers. */ static int osd_init_capa_ctxt(const struct lu_env *env, struct dt_device *d, int mode, unsigned long timeout, __u32 alg, struct lustre_capa_key *keys) { struct osd_device *dev = osd_dt_dev(d); ENTRY; dev->od_fl_capa = mode; dev->od_capa_timeout = timeout; dev->od_capa_alg = alg; dev->od_capa_keys = keys; RETURN(0); } /** * Concurrency: serialization provided by callers. */ static void osd_init_quota_ctxt(const struct lu_env *env, struct dt_device *d, struct dt_quota_ctxt *ctxt, void *data) { struct obd_device *obd = (void *)ctxt; struct vfsmount *mnt = (struct vfsmount *)data; ENTRY; obd->u.obt.obt_sb = mnt->mnt_root->d_inode->i_sb; OBD_SET_CTXT_MAGIC(&obd->obd_lvfs_ctxt); obd->obd_lvfs_ctxt.pwdmnt = mnt; obd->obd_lvfs_ctxt.pwd = mnt->mnt_root; obd->obd_lvfs_ctxt.fs = get_ds(); EXIT; } /** * Note: we do not count into QUOTA here. * If we mount with --data_journal we may need more. */ static const int osd_dto_credits_noquota[DTO_NR] = { /** * Insert/Delete. * INDEX_EXTRA_TRANS_BLOCKS(8) + * SINGLEDATA_TRANS_BLOCKS(8) * XXX Note: maybe iam need more, since iam have more level than * EXT3 htree. */ [DTO_INDEX_INSERT] = 16, [DTO_INDEX_DELETE] = 16, /** * Unused now */ [DTO_IDNEX_UPDATE] = 16, /** * Create a object. The same as create object in EXT3. * DATA_TRANS_BLOCKS(14) + * INDEX_EXTRA_BLOCKS(8) + * 3(inode bits, groups, GDT) */ [DTO_OBJECT_CREATE] = 25, /** * Unused now */ [DTO_OBJECT_DELETE] = 25, /** * Attr set credits. * 3(inode bits, group, GDT) */ [DTO_ATTR_SET_BASE] = 3, /** * Xattr set. The same as xattr of EXT3. * DATA_TRANS_BLOCKS(14) * XXX Note: in original MDS implmentation INDEX_EXTRA_TRANS_BLOCKS * are also counted in. Do not know why? */ [DTO_XATTR_SET] = 14, [DTO_LOG_REC] = 14, /** * creadits for inode change during write. */ [DTO_WRITE_BASE] = 3, /** * credits for single block write. */ [DTO_WRITE_BLOCK] = 14, /** * Attr set credits for chown. * This is extra credits for setattr, and it is null without quota */ [DTO_ATTR_SET_CHOWN]= 0 }; /** * Note: we count into QUOTA here. * If we mount with --data_journal we may need more. */ static const int osd_dto_credits_quota[DTO_NR] = { /** * INDEX_EXTRA_TRANS_BLOCKS(8) + * SINGLEDATA_TRANS_BLOCKS(8) + * 2 * QUOTA_TRANS_BLOCKS(2) */ [DTO_INDEX_INSERT] = 20, /** * INDEX_EXTRA_TRANS_BLOCKS(8) + * SINGLEDATA_TRANS_BLOCKS(8) + * 2 * QUOTA_TRANS_BLOCKS(2) */ [DTO_INDEX_DELETE] = 20, /** * Unused now. */ [DTO_IDNEX_UPDATE] = 16, /* * Create a object. Same as create object in EXT3 filesystem. * DATA_TRANS_BLOCKS(16) + * INDEX_EXTRA_BLOCKS(8) + * 3(inode bits, groups, GDT) + * 2 * QUOTA_INIT_BLOCKS(25) */ [DTO_OBJECT_CREATE] = 77, /* * Unused now. * DATA_TRANS_BLOCKS(16) + * INDEX_EXTRA_BLOCKS(8) + * 3(inode bits, groups, GDT) + * QUOTA(?) */ [DTO_OBJECT_DELETE] = 27, /** * Attr set credits. * 3 (inode bit, group, GDT) + */ [DTO_ATTR_SET_BASE] = 3, /** * Xattr set. The same as xattr of EXT3. * DATA_TRANS_BLOCKS(16) * XXX Note: in original MDS implmentation INDEX_EXTRA_TRANS_BLOCKS are * also counted in. Do not know why? */ [DTO_XATTR_SET] = 16, [DTO_LOG_REC] = 16, /** * creadits for inode change during write. */ [DTO_WRITE_BASE] = 3, /** * credits for single block write. */ [DTO_WRITE_BLOCK] = 16, /** * Attr set credits for chown. * It is added to already set setattr credits * 2 * QUOTA_INIT_BLOCKS(25) + * 2 * QUOTA_DEL_BLOCKS(9) */ [DTO_ATTR_SET_CHOWN]= 68, }; static int osd_credit_get(const struct lu_env *env, struct dt_device *d, enum dt_txn_op op) { LASSERT(ARRAY_SIZE(osd_dto_credits_noquota) == ARRAY_SIZE(osd_dto_credits_quota)); LASSERT(0 <= op && op < ARRAY_SIZE(osd_dto_credits_noquota)); #ifdef HAVE_QUOTA_SUPPORT if (test_opt(osd_sb(osd_dt_dev(d)), QUOTA)) return osd_dto_credits_quota[op]; else #endif return osd_dto_credits_noquota[op]; } static const struct dt_device_operations osd_dt_ops = { .dt_root_get = osd_root_get, .dt_statfs = osd_statfs, .dt_trans_start = osd_trans_start, .dt_trans_stop = osd_trans_stop, .dt_conf_get = osd_conf_get, .dt_sync = osd_sync, .dt_ro = osd_ro, .dt_commit_async = osd_commit_async, .dt_credit_get = osd_credit_get, .dt_init_capa_ctxt = osd_init_capa_ctxt, .dt_init_quota_ctxt= osd_init_quota_ctxt, }; static void osd_object_read_lock(const struct lu_env *env, struct dt_object *dt, unsigned role) { struct osd_object *obj = osd_dt_obj(dt); struct osd_thread_info *oti = osd_oti_get(env); LINVRNT(osd_invariant(obj)); LASSERT(obj->oo_owner != env); cfs_down_read_nested(&obj->oo_sem, role); LASSERT(obj->oo_owner == NULL); oti->oti_r_locks++; } static void osd_object_write_lock(const struct lu_env *env, struct dt_object *dt, unsigned role) { struct osd_object *obj = osd_dt_obj(dt); struct osd_thread_info *oti = osd_oti_get(env); LINVRNT(osd_invariant(obj)); LASSERT(obj->oo_owner != env); cfs_down_write_nested(&obj->oo_sem, role); LASSERT(obj->oo_owner == NULL); obj->oo_owner = env; oti->oti_w_locks++; } static void osd_object_read_unlock(const struct lu_env *env, struct dt_object *dt) { struct osd_object *obj = osd_dt_obj(dt); struct osd_thread_info *oti = osd_oti_get(env); LINVRNT(osd_invariant(obj)); LASSERT(oti->oti_r_locks > 0); oti->oti_r_locks--; cfs_up_read(&obj->oo_sem); } static void osd_object_write_unlock(const struct lu_env *env, struct dt_object *dt) { struct osd_object *obj = osd_dt_obj(dt); struct osd_thread_info *oti = osd_oti_get(env); LINVRNT(osd_invariant(obj)); LASSERT(obj->oo_owner == env); LASSERT(oti->oti_w_locks > 0); oti->oti_w_locks--; obj->oo_owner = NULL; cfs_up_write(&obj->oo_sem); } static int osd_object_write_locked(const struct lu_env *env, struct dt_object *dt) { struct osd_object *obj = osd_dt_obj(dt); LINVRNT(osd_invariant(obj)); return obj->oo_owner == env; } static int capa_is_sane(const struct lu_env *env, struct osd_device *dev, struct lustre_capa *capa, struct lustre_capa_key *keys) { struct osd_thread_info *oti = osd_oti_get(env); struct lustre_capa *tcapa = &oti->oti_capa; struct obd_capa *oc; int i, rc = 0; ENTRY; oc = capa_lookup(dev->od_capa_hash, capa, 0); if (oc) { if (capa_is_expired(oc)) { DEBUG_CAPA(D_ERROR, capa, "expired"); rc = -ESTALE; } capa_put(oc); RETURN(rc); } if (capa_is_expired_sec(capa)) { DEBUG_CAPA(D_ERROR, capa, "expired"); RETURN(-ESTALE); } cfs_spin_lock(&capa_lock); for (i = 0; i < 2; i++) { if (keys[i].lk_keyid == capa->lc_keyid) { oti->oti_capa_key = keys[i]; break; } } cfs_spin_unlock(&capa_lock); if (i == 2) { DEBUG_CAPA(D_ERROR, capa, "no matched capa key"); RETURN(-ESTALE); } rc = capa_hmac(tcapa->lc_hmac, capa, oti->oti_capa_key.lk_key); if (rc) RETURN(rc); if (memcmp(tcapa->lc_hmac, capa->lc_hmac, sizeof(capa->lc_hmac))) { DEBUG_CAPA(D_ERROR, capa, "HMAC mismatch"); RETURN(-EACCES); } oc = capa_add(dev->od_capa_hash, capa); capa_put(oc); RETURN(0); } static int osd_object_auth(const struct lu_env *env, struct dt_object *dt, struct lustre_capa *capa, __u64 opc) { const struct lu_fid *fid = lu_object_fid(&dt->do_lu); struct osd_device *dev = osd_dev(dt->do_lu.lo_dev); struct md_capainfo *ci; int rc; if (!dev->od_fl_capa) return 0; if (capa == BYPASS_CAPA) return 0; ci = md_capainfo(env); if (unlikely(!ci)) return 0; if (ci->mc_auth == LC_ID_NONE) return 0; if (!capa) { CERROR("no capability is provided for fid "DFID"\n", PFID(fid)); return -EACCES; } if (!lu_fid_eq(fid, &capa->lc_fid)) { DEBUG_CAPA(D_ERROR, capa, "fid "DFID" mismatch with", PFID(fid)); return -EACCES; } if (!capa_opc_supported(capa, opc)) { DEBUG_CAPA(D_ERROR, capa, "opc "LPX64" not supported by", opc); return -EACCES; } if ((rc = capa_is_sane(env, dev, capa, dev->od_capa_keys))) { DEBUG_CAPA(D_ERROR, capa, "insane (rc %d)", rc); return -EACCES; } return 0; } static struct timespec *osd_inode_time(const struct lu_env *env, struct inode *inode, __u64 seconds) { struct osd_thread_info *oti = osd_oti_get(env); struct timespec *t = &oti->oti_time; t->tv_sec = seconds; t->tv_nsec = 0; *t = timespec_trunc(*t, get_sb_time_gran(inode->i_sb)); return t; } static void osd_inode_getattr(const struct lu_env *env, struct inode *inode, struct lu_attr *attr) { attr->la_valid |= LA_ATIME | LA_MTIME | LA_CTIME | LA_MODE | LA_SIZE | LA_BLOCKS | LA_UID | LA_GID | LA_FLAGS | LA_NLINK | LA_RDEV | LA_BLKSIZE; attr->la_atime = LTIME_S(inode->i_atime); attr->la_mtime = LTIME_S(inode->i_mtime); attr->la_ctime = LTIME_S(inode->i_ctime); attr->la_mode = inode->i_mode; attr->la_size = i_size_read(inode); attr->la_blocks = inode->i_blocks; attr->la_uid = inode->i_uid; attr->la_gid = inode->i_gid; attr->la_flags = LDISKFS_I(inode)->i_flags; attr->la_nlink = inode->i_nlink; attr->la_rdev = inode->i_rdev; attr->la_blksize = ll_inode_blksize(inode); attr->la_blkbits = inode->i_blkbits; } static int osd_attr_get(const struct lu_env *env, struct dt_object *dt, struct lu_attr *attr, struct lustre_capa *capa) { struct osd_object *obj = osd_dt_obj(dt); LASSERT(dt_object_exists(dt)); LINVRNT(osd_invariant(obj)); if (osd_object_auth(env, dt, capa, CAPA_OPC_META_READ)) return -EACCES; cfs_spin_lock(&obj->oo_guard); osd_inode_getattr(env, obj->oo_inode, attr); cfs_spin_unlock(&obj->oo_guard); return 0; } static int osd_inode_setattr(const struct lu_env *env, struct inode *inode, const struct lu_attr *attr) { __u64 bits; bits = attr->la_valid; LASSERT(!(bits & LA_TYPE)); /* Huh? You want too much. */ #ifdef HAVE_QUOTA_SUPPORT if ((bits & LA_UID && attr->la_uid != inode->i_uid) || (bits & LA_GID && attr->la_gid != inode->i_gid)) { struct osd_ctxt *save = &osd_oti_get(env)->oti_ctxt; struct iattr iattr; int rc; iattr.ia_valid = 0; if (bits & LA_UID) iattr.ia_valid |= ATTR_UID; if (bits & LA_GID) iattr.ia_valid |= ATTR_GID; iattr.ia_uid = attr->la_uid; iattr.ia_gid = attr->la_gid; osd_push_ctxt(env, save); rc = DQUOT_TRANSFER(inode, &iattr) ? -EDQUOT : 0; osd_pop_ctxt(save); if (rc != 0) return rc; } #endif if (bits & LA_ATIME) inode->i_atime = *osd_inode_time(env, inode, attr->la_atime); if (bits & LA_CTIME) inode->i_ctime = *osd_inode_time(env, inode, attr->la_ctime); if (bits & LA_MTIME) inode->i_mtime = *osd_inode_time(env, inode, attr->la_mtime); if (bits & LA_SIZE) { LDISKFS_I(inode)->i_disksize = attr->la_size; i_size_write(inode, attr->la_size); } #if 0 /* OSD should not change "i_blocks" which is used by quota. * "i_blocks" should be changed by ldiskfs only. */ if (bits & LA_BLOCKS) inode->i_blocks = attr->la_blocks; #endif if (bits & LA_MODE) inode->i_mode = (inode->i_mode & S_IFMT) | (attr->la_mode & ~S_IFMT); if (bits & LA_UID) inode->i_uid = attr->la_uid; if (bits & LA_GID) inode->i_gid = attr->la_gid; if (bits & LA_NLINK) inode->i_nlink = attr->la_nlink; if (bits & LA_RDEV) inode->i_rdev = attr->la_rdev; if (bits & LA_FLAGS) { struct ldiskfs_inode_info *li = LDISKFS_I(inode); li->i_flags = (li->i_flags & ~LDISKFS_FL_USER_MODIFIABLE) | (attr->la_flags & LDISKFS_FL_USER_MODIFIABLE); } return 0; } static int osd_attr_set(const struct lu_env *env, struct dt_object *dt, const struct lu_attr *attr, struct thandle *handle, struct lustre_capa *capa) { struct osd_object *obj = osd_dt_obj(dt); int rc; LASSERT(handle != NULL); LASSERT(dt_object_exists(dt)); LASSERT(osd_invariant(obj)); if (osd_object_auth(env, dt, capa, CAPA_OPC_META_WRITE)) return -EACCES; cfs_spin_lock(&obj->oo_guard); rc = osd_inode_setattr(env, obj->oo_inode, attr); cfs_spin_unlock(&obj->oo_guard); if (!rc) mark_inode_dirty(obj->oo_inode); return rc; } /* * Object creation. * * XXX temporary solution. */ static int osd_create_pre(struct osd_thread_info *info, struct osd_object *obj, struct lu_attr *attr, struct thandle *th) { return 0; } static int osd_create_post(struct osd_thread_info *info, struct osd_object *obj, struct lu_attr *attr, struct thandle *th) { osd_object_init0(obj); return 0; } static struct dentry * osd_child_dentry_get(const struct lu_env *env, struct osd_object *obj, const char *name, const int namelen) { struct osd_thread_info *info = osd_oti_get(env); struct dentry *child_dentry = &info->oti_child_dentry; struct dentry *obj_dentry = &info->oti_obj_dentry; obj_dentry->d_inode = obj->oo_inode; obj_dentry->d_sb = osd_sb(osd_obj2dev(obj)); obj_dentry->d_name.hash = 0; child_dentry->d_name.hash = 0; child_dentry->d_parent = obj_dentry; child_dentry->d_name.name = name; child_dentry->d_name.len = namelen; return child_dentry; } static int osd_mkfile(struct osd_thread_info *info, struct osd_object *obj, cfs_umode_t mode, struct dt_allocation_hint *hint, struct thandle *th) { int result; struct osd_device *osd = osd_obj2dev(obj); struct osd_thandle *oth; struct dt_object *parent; struct inode *inode; #ifdef HAVE_QUOTA_SUPPORT struct osd_ctxt *save = &info->oti_ctxt; #endif LINVRNT(osd_invariant(obj)); LASSERT(obj->oo_inode == NULL); oth = container_of(th, struct osd_thandle, ot_super); LASSERT(oth->ot_handle->h_transaction != NULL); if (hint && hint->dah_parent) parent = hint->dah_parent; else parent = osd->od_obj_area; LASSERT(parent != NULL); LASSERT(osd_dt_obj(parent)->oo_inode->i_op != NULL); #ifdef HAVE_QUOTA_SUPPORT osd_push_ctxt(info->oti_env, save); #endif inode = ldiskfs_create_inode(oth->ot_handle, osd_dt_obj(parent)->oo_inode, mode); #ifdef HAVE_QUOTA_SUPPORT osd_pop_ctxt(save); #endif if (!IS_ERR(inode)) { obj->oo_inode = inode; result = 0; } else result = PTR_ERR(inode); LINVRNT(osd_invariant(obj)); return result; } enum { OSD_NAME_LEN = 255 }; static int osd_mkdir(struct osd_thread_info *info, struct osd_object *obj, struct lu_attr *attr, struct dt_allocation_hint *hint, struct dt_object_format *dof, struct thandle *th) { int result; struct osd_thandle *oth; struct osd_device *osd = osd_obj2dev(obj); __u32 mode = (attr->la_mode & (S_IFMT | S_IRWXUGO | S_ISVTX)); LASSERT(S_ISDIR(attr->la_mode)); oth = container_of(th, struct osd_thandle, ot_super); LASSERT(oth->ot_handle->h_transaction != NULL); result = osd_mkfile(info, obj, mode, hint, th); if (result == 0 && osd->od_iop_mode == 0) { LASSERT(obj->oo_inode != NULL); /* * XXX uh-oh... call low-level iam function directly. */ result = iam_lvar_create(obj->oo_inode, OSD_NAME_LEN, 4, sizeof (struct osd_fid_pack), oth->ot_handle); } return result; } static int osd_mk_index(struct osd_thread_info *info, struct osd_object *obj, struct lu_attr *attr, struct dt_allocation_hint *hint, struct dt_object_format *dof, struct thandle *th) { int result; struct osd_thandle *oth; const struct dt_index_features *feat = dof->u.dof_idx.di_feat; __u32 mode = (attr->la_mode & (S_IFMT | S_IRWXUGO | S_ISVTX)); LASSERT(S_ISREG(attr->la_mode)); oth = container_of(th, struct osd_thandle, ot_super); LASSERT(oth->ot_handle->h_transaction != NULL); result = osd_mkfile(info, obj, mode, hint, th); if (result == 0) { LASSERT(obj->oo_inode != NULL); if (feat->dif_flags & DT_IND_VARKEY) result = iam_lvar_create(obj->oo_inode, feat->dif_keysize_max, feat->dif_ptrsize, feat->dif_recsize_max, oth->ot_handle); else result = iam_lfix_create(obj->oo_inode, feat->dif_keysize_max, feat->dif_ptrsize, feat->dif_recsize_max, oth->ot_handle); } return result; } static int osd_mkreg(struct osd_thread_info *info, struct osd_object *obj, struct lu_attr *attr, struct dt_allocation_hint *hint, struct dt_object_format *dof, struct thandle *th) { LASSERT(S_ISREG(attr->la_mode)); return osd_mkfile(info, obj, (attr->la_mode & (S_IFMT | S_IRWXUGO | S_ISVTX)), hint, th); } static int osd_mksym(struct osd_thread_info *info, struct osd_object *obj, struct lu_attr *attr, struct dt_allocation_hint *hint, struct dt_object_format *dof, struct thandle *th) { LASSERT(S_ISLNK(attr->la_mode)); return osd_mkfile(info, obj, (attr->la_mode & (S_IFMT | S_IRWXUGO | S_ISVTX)), hint, th); } static int osd_mknod(struct osd_thread_info *info, struct osd_object *obj, struct lu_attr *attr, struct dt_allocation_hint *hint, struct dt_object_format *dof, struct thandle *th) { cfs_umode_t mode = attr->la_mode & (S_IFMT | S_IRWXUGO | S_ISVTX); int result; LINVRNT(osd_invariant(obj)); LASSERT(obj->oo_inode == NULL); LASSERT(S_ISCHR(mode) || S_ISBLK(mode) || S_ISFIFO(mode) || S_ISSOCK(mode)); result = osd_mkfile(info, obj, mode, hint, th); if (result == 0) { LASSERT(obj->oo_inode != NULL); init_special_inode(obj->oo_inode, mode, attr->la_rdev); } LINVRNT(osd_invariant(obj)); return result; } typedef int (*osd_obj_type_f)(struct osd_thread_info *, struct osd_object *, struct lu_attr *, struct dt_allocation_hint *hint, struct dt_object_format *dof, struct thandle *); static osd_obj_type_f osd_create_type_f(enum dt_format_type type) { osd_obj_type_f result; switch (type) { case DFT_DIR: result = osd_mkdir; break; case DFT_REGULAR: result = osd_mkreg; break; case DFT_SYM: result = osd_mksym; break; case DFT_NODE: result = osd_mknod; break; case DFT_INDEX: result = osd_mk_index; break; default: LBUG(); break; } return result; } static void osd_ah_init(const struct lu_env *env, struct dt_allocation_hint *ah, struct dt_object *parent, cfs_umode_t child_mode) { LASSERT(ah); memset(ah, 0, sizeof(*ah)); ah->dah_parent = parent; ah->dah_mode = child_mode; } /** * Helper function for osd_object_create() * * \retval 0, on success */ static int __osd_object_create(struct osd_thread_info *info, struct osd_object *obj, struct lu_attr *attr, struct dt_allocation_hint *hint, struct dt_object_format *dof, struct thandle *th) { int result; result = osd_create_pre(info, obj, attr, th); if (result == 0) { result = osd_create_type_f(dof->dof_type)(info, obj, attr, hint, dof, th); if (result == 0) result = osd_create_post(info, obj, attr, th); } return result; } /** * Helper function for osd_object_create() * * \retval 0, on success */ static int __osd_oi_insert(const struct lu_env *env, struct osd_object *obj, const struct lu_fid *fid, struct thandle *th) { struct osd_thread_info *info = osd_oti_get(env); struct osd_inode_id *id = &info->oti_id; struct osd_device *osd = osd_obj2dev(obj); struct md_ucred *uc = md_ucred(env); LASSERT(obj->oo_inode != NULL); LASSERT(uc != NULL); id->oii_ino = obj->oo_inode->i_ino; id->oii_gen = obj->oo_inode->i_generation; return osd_oi_insert(info, &osd->od_oi, fid, id, th, uc->mu_cap & CFS_CAP_SYS_RESOURCE_MASK); } static int osd_object_create(const struct lu_env *env, struct dt_object *dt, struct lu_attr *attr, struct dt_allocation_hint *hint, struct dt_object_format *dof, struct thandle *th) { const struct lu_fid *fid = lu_object_fid(&dt->do_lu); struct osd_object *obj = osd_dt_obj(dt); struct osd_thread_info *info = osd_oti_get(env); int result; ENTRY; LINVRNT(osd_invariant(obj)); LASSERT(!dt_object_exists(dt)); LASSERT(osd_write_locked(env, obj)); LASSERT(th != NULL); result = __osd_object_create(info, obj, attr, hint, dof, th); if (result == 0) result = __osd_oi_insert(env, obj, fid, th); LASSERT(ergo(result == 0, dt_object_exists(dt))); LASSERT(osd_invariant(obj)); RETURN(result); } /** * Helper function for osd_xattr_set() */ static int __osd_xattr_set(const struct lu_env *env, struct dt_object *dt, const struct lu_buf *buf, const char *name, int fl) { struct osd_object *obj = osd_dt_obj(dt); struct inode *inode = obj->oo_inode; struct osd_thread_info *info = osd_oti_get(env); struct dentry *dentry = &info->oti_child_dentry; struct timespec *t = &info->oti_time; int fs_flags = 0; int rc; LASSERT(dt_object_exists(dt)); LASSERT(inode->i_op != NULL && inode->i_op->setxattr != NULL); LASSERT(osd_write_locked(env, obj)); if (fl & LU_XATTR_REPLACE) fs_flags |= XATTR_REPLACE; if (fl & LU_XATTR_CREATE) fs_flags |= XATTR_CREATE; dentry->d_inode = inode; *t = inode->i_ctime; rc = inode->i_op->setxattr(dentry, name, buf->lb_buf, buf->lb_len, fs_flags); /* ctime should not be updated with server-side time. */ cfs_spin_lock(&obj->oo_guard); inode->i_ctime = *t; cfs_spin_unlock(&obj->oo_guard); mark_inode_dirty(inode); return rc; } /** * Put the fid into lustre_mdt_attrs, and then place the structure * inode's ea. This fid should not be altered during the life time * of the inode. * * \retval +ve, on success * \retval -ve, on error * * FIXME: It is good to have/use ldiskfs_xattr_set_handle() here */ static int osd_ea_fid_set(const struct lu_env *env, struct dt_object *dt, const struct lu_fid *fid) { struct osd_thread_info *info = osd_oti_get(env); struct lustre_mdt_attrs *mdt_attrs = &info->oti_mdt_attrs; lustre_lma_init(mdt_attrs, fid); lustre_lma_swab(mdt_attrs); return __osd_xattr_set(env, dt, osd_buf_get(env, mdt_attrs, sizeof *mdt_attrs), XATTR_NAME_LMA, LU_XATTR_CREATE); } /** * Helper function to form igif */ static inline void osd_igif_get(const struct lu_env *env, struct inode *inode, struct lu_fid *fid) { lu_igif_build(fid, inode->i_ino, inode->i_generation); } /** * Helper function to pack the fid */ void osd_fid_pack(struct osd_fid_pack *pack, const struct dt_rec *fid, struct lu_fid *befider) { fid_cpu_to_be(befider, (struct lu_fid *)fid); memcpy(pack->fp_area, befider, sizeof(*befider)); pack->fp_len = sizeof(*befider) + 1; } int osd_fid_unpack(struct lu_fid *fid, const struct osd_fid_pack *pack) { int result; result = 0; switch (pack->fp_len) { case sizeof *fid + 1: memcpy(fid, pack->fp_area, sizeof *fid); fid_be_to_cpu(fid, fid); break; default: CERROR("Unexpected packed fid size: %d\n", pack->fp_len); result = -EIO; } return result; } /** * Try to read the fid from inode ea into dt_rec, if return value * i.e. rc is +ve, then we got fid, otherwise we will have to form igif * * \param fid object fid. * * \retval 0 on success */ static int osd_ea_fid_get(const struct lu_env *env, struct osd_object *obj, __u32 ino, struct lu_fid *fid) { struct osd_thread_info *info = osd_oti_get(env); struct lustre_mdt_attrs *mdt_attrs = &info->oti_mdt_attrs; struct lu_device *ldev = obj->oo_dt.do_lu.lo_dev; struct dentry *dentry = &info->oti_child_dentry; struct osd_inode_id *id = &info->oti_id; struct osd_device *dev; struct inode *inode; int rc; ENTRY; dev = osd_dev(ldev); id->oii_ino = ino; id->oii_gen = OSD_OII_NOGEN; inode = osd_iget(info, dev, id); if (IS_ERR(inode)) { rc = PTR_ERR(inode); GOTO(out,rc); } dentry->d_inode = inode; LASSERT(inode->i_op != NULL && inode->i_op->getxattr != NULL); rc = inode->i_op->getxattr(dentry, XATTR_NAME_LMA, (void *)mdt_attrs, sizeof *mdt_attrs); /* Check LMA compatibility */ if (rc > 0 && (mdt_attrs->lma_incompat & ~cpu_to_le32(LMA_INCOMPAT_SUPP))) { CWARN("Inode %lx: Unsupported incompat LMA feature(s) %#x\n", inode->i_ino, le32_to_cpu(mdt_attrs->lma_incompat) & ~LMA_INCOMPAT_SUPP); return -ENOSYS; } if (rc > 0) { lustre_lma_swab(mdt_attrs); memcpy(fid, &mdt_attrs->lma_self_fid, sizeof(*fid)); rc = 0; } else if (rc == -ENODATA) { osd_igif_get(env, inode, fid); rc = 0; } iput(inode); out: RETURN(rc); } /** * OSD layer object create function for interoperability mode (b11826). * This is mostly similar to osd_object_create(). Only difference being, fid is * inserted into inode ea here. * * \retval 0, on success * \retval -ve, on error */ static int osd_object_ea_create(const struct lu_env *env, struct dt_object *dt, struct lu_attr *attr, struct dt_allocation_hint *hint, struct dt_object_format *dof, struct thandle *th) { const struct lu_fid *fid = lu_object_fid(&dt->do_lu); struct osd_object *obj = osd_dt_obj(dt); struct osd_thread_info *info = osd_oti_get(env); int result; int is_root = 0; ENTRY; LASSERT(osd_invariant(obj)); LASSERT(!dt_object_exists(dt)); LASSERT(osd_write_locked(env, obj)); LASSERT(th != NULL); result = __osd_object_create(info, obj, attr, hint, dof, th); if (hint && hint->dah_parent) is_root = osd_object_is_root(osd_dt_obj(hint->dah_parent)); /* objects under osd root shld have igif fid, so dont add fid EA */ if (result == 0 && is_root == 0) result = osd_ea_fid_set(env, dt, fid); if (result == 0) result = __osd_oi_insert(env, obj, fid, th); LASSERT(ergo(result == 0, dt_object_exists(dt))); LINVRNT(osd_invariant(obj)); RETURN(result); } /* * Concurrency: @dt is write locked. */ static void osd_object_ref_add(const struct lu_env *env, struct dt_object *dt, struct thandle *th) { struct osd_object *obj = osd_dt_obj(dt); struct inode *inode = obj->oo_inode; LINVRNT(osd_invariant(obj)); LASSERT(dt_object_exists(dt)); LASSERT(osd_write_locked(env, obj)); LASSERT(th != NULL); cfs_spin_lock(&obj->oo_guard); LASSERT(inode->i_nlink < LDISKFS_LINK_MAX); inode->i_nlink++; cfs_spin_unlock(&obj->oo_guard); mark_inode_dirty(inode); LINVRNT(osd_invariant(obj)); } /* * Concurrency: @dt is write locked. */ static void osd_object_ref_del(const struct lu_env *env, struct dt_object *dt, struct thandle *th) { struct osd_object *obj = osd_dt_obj(dt); struct inode *inode = obj->oo_inode; LINVRNT(osd_invariant(obj)); LASSERT(dt_object_exists(dt)); LASSERT(osd_write_locked(env, obj)); LASSERT(th != NULL); cfs_spin_lock(&obj->oo_guard); LASSERT(inode->i_nlink > 0); inode->i_nlink--; cfs_spin_unlock(&obj->oo_guard); mark_inode_dirty(inode); LINVRNT(osd_invariant(obj)); } /* * Concurrency: @dt is read locked. */ static int osd_xattr_get(const struct lu_env *env, struct dt_object *dt, struct lu_buf *buf, const char *name, struct lustre_capa *capa) { struct osd_object *obj = osd_dt_obj(dt); struct inode *inode = obj->oo_inode; struct osd_thread_info *info = osd_oti_get(env); struct dentry *dentry = &info->oti_obj_dentry; LASSERT(dt_object_exists(dt)); LASSERT(inode->i_op != NULL && inode->i_op->getxattr != NULL); LASSERT(osd_read_locked(env, obj) || osd_write_locked(env, obj)); if (osd_object_auth(env, dt, capa, CAPA_OPC_META_READ)) return -EACCES; dentry->d_inode = inode; return inode->i_op->getxattr(dentry, name, buf->lb_buf, buf->lb_len); } /* * Concurrency: @dt is write locked. */ static int osd_xattr_set(const struct lu_env *env, struct dt_object *dt, const struct lu_buf *buf, const char *name, int fl, struct thandle *handle, struct lustre_capa *capa) { LASSERT(handle != NULL); if (osd_object_auth(env, dt, capa, CAPA_OPC_META_WRITE)) return -EACCES; return __osd_xattr_set(env, dt, buf, name, fl); } /* * Concurrency: @dt is read locked. */ static int osd_xattr_list(const struct lu_env *env, struct dt_object *dt, struct lu_buf *buf, struct lustre_capa *capa) { struct osd_object *obj = osd_dt_obj(dt); struct inode *inode = obj->oo_inode; struct osd_thread_info *info = osd_oti_get(env); struct dentry *dentry = &info->oti_obj_dentry; LASSERT(dt_object_exists(dt)); LASSERT(inode->i_op != NULL && inode->i_op->listxattr != NULL); LASSERT(osd_read_locked(env, obj) || osd_write_locked(env, obj)); if (osd_object_auth(env, dt, capa, CAPA_OPC_META_READ)) return -EACCES; dentry->d_inode = inode; return inode->i_op->listxattr(dentry, buf->lb_buf, buf->lb_len); } /* * Concurrency: @dt is write locked. */ static int osd_xattr_del(const struct lu_env *env, struct dt_object *dt, const char *name, struct thandle *handle, struct lustre_capa *capa) { struct osd_object *obj = osd_dt_obj(dt); struct inode *inode = obj->oo_inode; struct osd_thread_info *info = osd_oti_get(env); struct dentry *dentry = &info->oti_obj_dentry; struct timespec *t = &info->oti_time; int rc; LASSERT(dt_object_exists(dt)); LASSERT(inode->i_op != NULL && inode->i_op->removexattr != NULL); LASSERT(osd_write_locked(env, obj)); LASSERT(handle != NULL); if (osd_object_auth(env, dt, capa, CAPA_OPC_META_WRITE)) return -EACCES; dentry->d_inode = inode; *t = inode->i_ctime; rc = inode->i_op->removexattr(dentry, name); /* ctime should not be updated with server-side time. */ cfs_spin_lock(&obj->oo_guard); inode->i_ctime = *t; cfs_spin_unlock(&obj->oo_guard); mark_inode_dirty(inode); return rc; } static struct obd_capa *osd_capa_get(const struct lu_env *env, struct dt_object *dt, struct lustre_capa *old, __u64 opc) { struct osd_thread_info *info = osd_oti_get(env); const struct lu_fid *fid = lu_object_fid(&dt->do_lu); struct osd_object *obj = osd_dt_obj(dt); struct osd_device *dev = osd_obj2dev(obj); struct lustre_capa_key *key = &info->oti_capa_key; struct lustre_capa *capa = &info->oti_capa; struct obd_capa *oc; struct md_capainfo *ci; int rc; ENTRY; if (!dev->od_fl_capa) RETURN(ERR_PTR(-ENOENT)); LASSERT(dt_object_exists(dt)); LINVRNT(osd_invariant(obj)); /* renewal sanity check */ if (old && osd_object_auth(env, dt, old, opc)) RETURN(ERR_PTR(-EACCES)); ci = md_capainfo(env); if (unlikely(!ci)) RETURN(ERR_PTR(-ENOENT)); switch (ci->mc_auth) { case LC_ID_NONE: RETURN(NULL); case LC_ID_PLAIN: capa->lc_uid = obj->oo_inode->i_uid; capa->lc_gid = obj->oo_inode->i_gid; capa->lc_flags = LC_ID_PLAIN; break; case LC_ID_CONVERT: { __u32 d[4], s[4]; s[0] = obj->oo_inode->i_uid; ll_get_random_bytes(&(s[1]), sizeof(__u32)); s[2] = obj->oo_inode->i_gid; ll_get_random_bytes(&(s[3]), sizeof(__u32)); rc = capa_encrypt_id(d, s, key->lk_key, CAPA_HMAC_KEY_MAX_LEN); if (unlikely(rc)) RETURN(ERR_PTR(rc)); capa->lc_uid = ((__u64)d[1] << 32) | d[0]; capa->lc_gid = ((__u64)d[3] << 32) | d[2]; capa->lc_flags = LC_ID_CONVERT; break; } default: RETURN(ERR_PTR(-EINVAL)); } capa->lc_fid = *fid; capa->lc_opc = opc; capa->lc_flags |= dev->od_capa_alg << 24; capa->lc_timeout = dev->od_capa_timeout; capa->lc_expiry = 0; oc = capa_lookup(dev->od_capa_hash, capa, 1); if (oc) { LASSERT(!capa_is_expired(oc)); RETURN(oc); } cfs_spin_lock(&capa_lock); *key = dev->od_capa_keys[1]; cfs_spin_unlock(&capa_lock); capa->lc_keyid = key->lk_keyid; capa->lc_expiry = cfs_time_current_sec() + dev->od_capa_timeout; rc = capa_hmac(capa->lc_hmac, capa, key->lk_key); if (rc) { DEBUG_CAPA(D_ERROR, capa, "HMAC failed: %d for", rc); RETURN(ERR_PTR(rc)); } oc = capa_add(dev->od_capa_hash, capa); RETURN(oc); } static int osd_object_sync(const struct lu_env *env, struct dt_object *dt) { int rc; struct osd_object *obj = osd_dt_obj(dt); struct inode *inode = obj->oo_inode; struct osd_thread_info *info = osd_oti_get(env); struct dentry *dentry = &info->oti_obj_dentry; struct file *file = &info->oti_file; ENTRY; dentry->d_inode = inode; file->f_dentry = dentry; file->f_mapping = inode->i_mapping; file->f_op = inode->i_fop; LOCK_INODE_MUTEX(inode); rc = file->f_op->fsync(file, dentry, 0); UNLOCK_INODE_MUTEX(inode); RETURN(rc); } /* * Get the 64-bit version for an inode. */ static dt_obj_version_t osd_object_version_get(const struct lu_env *env, struct dt_object *dt) { struct inode *inode = osd_dt_obj(dt)->oo_inode; CDEBUG(D_INFO, "Get version "LPX64" for inode %lu\n", LDISKFS_I(inode)->i_fs_version, inode->i_ino); return LDISKFS_I(inode)->i_fs_version; } /* * Set the 64-bit version and return the old version. */ static void osd_object_version_set(const struct lu_env *env, struct dt_object *dt, dt_obj_version_t new_version) { struct inode *inode = osd_dt_obj(dt)->oo_inode; CDEBUG(D_INFO, "Set version "LPX64" (old "LPX64") for inode %lu\n", new_version, LDISKFS_I(inode)->i_fs_version, inode->i_ino); LDISKFS_I(inode)->i_fs_version = new_version; /** Version is set after all inode operations are finished, * so we should mark it dirty here */ inode->i_sb->s_op->dirty_inode(inode); } static int osd_data_get(const struct lu_env *env, struct dt_object *dt, void **data) { struct osd_object *obj = osd_dt_obj(dt); ENTRY; *data = (void *)obj->oo_inode; RETURN(0); } /* * Index operations. */ static int osd_iam_index_probe(const struct lu_env *env, struct osd_object *o, const struct dt_index_features *feat) { struct iam_descr *descr; if (osd_object_is_root(o)) return feat == &dt_directory_features; LASSERT(o->oo_dir != NULL); descr = o->oo_dir->od_container.ic_descr; if (feat == &dt_directory_features) { if (descr->id_rec_size == sizeof(struct osd_fid_pack)) return 1; else return 0; } else { return feat->dif_keysize_min <= descr->id_key_size && descr->id_key_size <= feat->dif_keysize_max && feat->dif_recsize_min <= descr->id_rec_size && descr->id_rec_size <= feat->dif_recsize_max && !(feat->dif_flags & (DT_IND_VARKEY | DT_IND_VARREC | DT_IND_NONUNQ)) && ergo(feat->dif_flags & DT_IND_UPDATE, 1 /* XXX check that object (and file system) is * writable */); } } static int osd_iam_container_init(const struct lu_env *env, struct osd_object *obj, struct osd_directory *dir) { int result; struct iam_container *bag; bag = &dir->od_container; result = iam_container_init(bag, &dir->od_descr, obj->oo_inode); if (result == 0) { result = iam_container_setup(bag); if (result == 0) obj->oo_dt.do_index_ops = &osd_index_iam_ops; else iam_container_fini(bag); } return result; } /* * Concurrency: no external locking is necessary. */ static int osd_index_try(const struct lu_env *env, struct dt_object *dt, const struct dt_index_features *feat) { int result; int ea_dir = 0; struct osd_object *obj = osd_dt_obj(dt); struct osd_device *osd = osd_obj2dev(obj); LINVRNT(osd_invariant(obj)); LASSERT(dt_object_exists(dt)); if (osd_object_is_root(obj)) { dt->do_index_ops = &osd_index_ea_ops; result = 0; } else if (feat == &dt_directory_features && osd->od_iop_mode) { dt->do_index_ops = &osd_index_ea_ops; if (S_ISDIR(obj->oo_inode->i_mode)) result = 0; else result = -ENOTDIR; ea_dir = 1; } else if (!osd_has_index(obj)) { struct osd_directory *dir; OBD_ALLOC_PTR(dir); if (dir != NULL) { cfs_spin_lock(&obj->oo_guard); if (obj->oo_dir == NULL) obj->oo_dir = dir; else /* * Concurrent thread allocated container data. */ OBD_FREE_PTR(dir); cfs_spin_unlock(&obj->oo_guard); /* * Now, that we have container data, serialize its * initialization. */ cfs_down_write(&obj->oo_ext_idx_sem); /* * recheck under lock. */ if (!osd_has_index(obj)) result = osd_iam_container_init(env, obj, dir); else result = 0; cfs_up_write(&obj->oo_ext_idx_sem); } else result = -ENOMEM; } else result = 0; if (result == 0 && ea_dir == 0) { if (!osd_iam_index_probe(env, obj, feat)) result = -ENOTDIR; } LINVRNT(osd_invariant(obj)); return result; } static const struct dt_object_operations osd_obj_ops = { .do_read_lock = osd_object_read_lock, .do_write_lock = osd_object_write_lock, .do_read_unlock = osd_object_read_unlock, .do_write_unlock = osd_object_write_unlock, .do_write_locked = osd_object_write_locked, .do_attr_get = osd_attr_get, .do_attr_set = osd_attr_set, .do_ah_init = osd_ah_init, .do_create = osd_object_create, .do_index_try = osd_index_try, .do_ref_add = osd_object_ref_add, .do_ref_del = osd_object_ref_del, .do_xattr_get = osd_xattr_get, .do_xattr_set = osd_xattr_set, .do_xattr_del = osd_xattr_del, .do_xattr_list = osd_xattr_list, .do_capa_get = osd_capa_get, .do_object_sync = osd_object_sync, .do_version_get = osd_object_version_get, .do_version_set = osd_object_version_set, .do_data_get = osd_data_get, }; /** * dt_object_operations for interoperability mode * (i.e. to run 2.0 mds on 1.8 disk) (b11826) */ static const struct dt_object_operations osd_obj_ea_ops = { .do_read_lock = osd_object_read_lock, .do_write_lock = osd_object_write_lock, .do_read_unlock = osd_object_read_unlock, .do_write_unlock = osd_object_write_unlock, .do_write_locked = osd_object_write_locked, .do_attr_get = osd_attr_get, .do_attr_set = osd_attr_set, .do_ah_init = osd_ah_init, .do_create = osd_object_ea_create, .do_index_try = osd_index_try, .do_ref_add = osd_object_ref_add, .do_ref_del = osd_object_ref_del, .do_xattr_get = osd_xattr_get, .do_xattr_set = osd_xattr_set, .do_xattr_del = osd_xattr_del, .do_xattr_list = osd_xattr_list, .do_capa_get = osd_capa_get, .do_object_sync = osd_object_sync, .do_version_get = osd_object_version_get, .do_version_set = osd_object_version_set, .do_data_get = osd_data_get, }; /* * Body operations. */ /* * XXX: Another layering violation for now. * * We don't want to use ->f_op->read methods, because generic file write * * - serializes on ->i_sem, and * * - does a lot of extra work like balance_dirty_pages(), * * which doesn't work for globally shared files like /last-received. */ int fsfilt_ldiskfs_read(struct inode *inode, void *buf, int size, loff_t *offs); int fsfilt_ldiskfs_write_handle(struct inode *inode, void *buf, int bufsize, loff_t *offs, handle_t *handle); static ssize_t osd_read(const struct lu_env *env, struct dt_object *dt, struct lu_buf *buf, loff_t *pos, struct lustre_capa *capa) { struct inode *inode = osd_dt_obj(dt)->oo_inode; if (osd_object_auth(env, dt, capa, CAPA_OPC_BODY_READ)) RETURN(-EACCES); return fsfilt_ldiskfs_read(inode, buf->lb_buf, buf->lb_len, pos); } static ssize_t osd_write(const struct lu_env *env, struct dt_object *dt, const struct lu_buf *buf, loff_t *pos, struct thandle *handle, struct lustre_capa *capa, int ignore_quota) { struct inode *inode = osd_dt_obj(dt)->oo_inode; struct osd_thandle *oh; ssize_t result; #ifdef HAVE_QUOTA_SUPPORT cfs_cap_t save = current->cap_effective; #endif LASSERT(handle != NULL); if (osd_object_auth(env, dt, capa, CAPA_OPC_BODY_WRITE)) RETURN(-EACCES); oh = container_of(handle, struct osd_thandle, ot_super); LASSERT(oh->ot_handle->h_transaction != NULL); #ifdef HAVE_QUOTA_SUPPORT if (ignore_quota) current->cap_effective |= CFS_CAP_SYS_RESOURCE_MASK; else current->cap_effective &= ~CFS_CAP_SYS_RESOURCE_MASK; #endif result = fsfilt_ldiskfs_write_handle(inode, buf->lb_buf, buf->lb_len, pos, oh->ot_handle); #ifdef HAVE_QUOTA_SUPPORT current->cap_effective = save; #endif if (result == 0) result = buf->lb_len; return result; } static const struct dt_body_operations osd_body_ops = { .dbo_read = osd_read, .dbo_write = osd_write }; /** * delete a (key, value) pair from index \a dt specified by \a key * * \param dt osd index object * \param key key for index * \param rec record reference * \param handle transaction handler * * \retval 0 success * \retval -ve failure */ static int osd_index_iam_delete(const struct lu_env *env, struct dt_object *dt, const struct dt_key *key, struct thandle *handle, struct lustre_capa *capa) { struct osd_object *obj = osd_dt_obj(dt); struct osd_thandle *oh; struct iam_path_descr *ipd; struct iam_container *bag = &obj->oo_dir->od_container; int rc; ENTRY; LINVRNT(osd_invariant(obj)); LASSERT(dt_object_exists(dt)); LASSERT(bag->ic_object == obj->oo_inode); LASSERT(handle != NULL); if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_DELETE)) RETURN(-EACCES); ipd = osd_idx_ipd_get(env, bag); if (unlikely(ipd == NULL)) RETURN(-ENOMEM); oh = container_of0(handle, struct osd_thandle, ot_super); LASSERT(oh->ot_handle != NULL); LASSERT(oh->ot_handle->h_transaction != NULL); rc = iam_delete(oh->ot_handle, bag, (const struct iam_key *)key, ipd); osd_ipd_put(env, bag, ipd); LINVRNT(osd_invariant(obj)); RETURN(rc); } /** * Index delete function for interoperability mode (b11826). * It will remove the directory entry added by osd_index_ea_insert(). * This entry is needed to maintain name->fid mapping. * * \param key, key i.e. file entry to be deleted * * \retval 0, on success * \retval -ve, on error */ static int osd_index_ea_delete(const struct lu_env *env, struct dt_object *dt, const struct dt_key *key, struct thandle *handle, struct lustre_capa *capa) { struct osd_object *obj = osd_dt_obj(dt); struct inode *dir = obj->oo_inode; struct dentry *dentry; struct osd_thandle *oh; struct ldiskfs_dir_entry_2 *de; struct buffer_head *bh; int rc; ENTRY; LINVRNT(osd_invariant(obj)); LASSERT(dt_object_exists(dt)); LASSERT(handle != NULL); oh = container_of(handle, struct osd_thandle, ot_super); LASSERT(oh->ot_handle != NULL); LASSERT(oh->ot_handle->h_transaction != NULL); if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_DELETE)) RETURN(-EACCES); dentry = osd_child_dentry_get(env, obj, (char *)key, strlen((char *)key)); cfs_down_write(&obj->oo_ext_idx_sem); bh = ll_ldiskfs_find_entry(dir, dentry, &de); if (bh) { struct osd_thread_info *oti = osd_oti_get(env); struct timespec *ctime = &oti->oti_time; struct timespec *mtime = &oti->oti_time2; *ctime = dir->i_ctime; *mtime = dir->i_mtime; rc = ldiskfs_delete_entry(oh->ot_handle, dir, de, bh); /* xtime should not be updated with server-side time. */ cfs_spin_lock(&obj->oo_guard); dir->i_ctime = *ctime; dir->i_mtime = *mtime; cfs_spin_unlock(&obj->oo_guard); mark_inode_dirty(dir); brelse(bh); } else rc = -ENOENT; cfs_up_write(&obj->oo_ext_idx_sem); LASSERT(osd_invariant(obj)); RETURN(rc); } /** * Lookup index for \a key and copy record to \a rec. * * \param dt osd index object * \param key key for index * \param rec record reference * * \retval +ve success : exact mach * \retval 0 return record with key not greater than \a key * \retval -ve failure */ static int osd_index_iam_lookup(const struct lu_env *env, struct dt_object *dt, struct dt_rec *rec, const struct dt_key *key, struct lustre_capa *capa) { struct osd_object *obj = osd_dt_obj(dt); struct iam_path_descr *ipd; struct iam_container *bag = &obj->oo_dir->od_container; struct osd_thread_info *oti = osd_oti_get(env); struct iam_iterator *it = &oti->oti_idx_it; struct iam_rec *iam_rec; int rc; ENTRY; LASSERT(osd_invariant(obj)); LASSERT(dt_object_exists(dt)); LASSERT(bag->ic_object == obj->oo_inode); if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_LOOKUP)) RETURN(-EACCES); ipd = osd_idx_ipd_get(env, bag); if (IS_ERR(ipd)) RETURN(-ENOMEM); /* got ipd now we can start iterator. */ iam_it_init(it, bag, 0, ipd); rc = iam_it_get(it, (struct iam_key *)key); if (rc >= 0) { if (S_ISDIR(obj->oo_inode->i_mode)) iam_rec = (struct iam_rec *)oti->oti_fid_packed; else iam_rec = (struct iam_rec *) rec; iam_reccpy(&it->ii_path.ip_leaf, (struct iam_rec *)iam_rec); if (S_ISDIR(obj->oo_inode->i_mode)) osd_fid_unpack((struct lu_fid *) rec, (struct osd_fid_pack *)iam_rec); } iam_it_put(it); iam_it_fini(it); osd_ipd_put(env, bag, ipd); LINVRNT(osd_invariant(obj)); RETURN(rc); } /** * Inserts (key, value) pair in \a dt index object. * * \param dt osd index object * \param key key for index * \param rec record reference * \param th transaction handler * * \retval 0 success * \retval -ve failure */ static int osd_index_iam_insert(const struct lu_env *env, struct dt_object *dt, const struct dt_rec *rec, const struct dt_key *key, struct thandle *th, struct lustre_capa *capa, int ignore_quota) { struct osd_object *obj = osd_dt_obj(dt); struct iam_path_descr *ipd; struct osd_thandle *oh; struct iam_container *bag = &obj->oo_dir->od_container; #ifdef HAVE_QUOTA_SUPPORT cfs_cap_t save = current->cap_effective; #endif struct osd_thread_info *oti = osd_oti_get(env); struct iam_rec *iam_rec = (struct iam_rec *)oti->oti_fid_packed; int rc; ENTRY; LINVRNT(osd_invariant(obj)); LASSERT(dt_object_exists(dt)); LASSERT(bag->ic_object == obj->oo_inode); LASSERT(th != NULL); if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_INSERT)) return -EACCES; ipd = osd_idx_ipd_get(env, bag); if (unlikely(ipd == NULL)) RETURN(-ENOMEM); oh = container_of0(th, struct osd_thandle, ot_super); LASSERT(oh->ot_handle != NULL); LASSERT(oh->ot_handle->h_transaction != NULL); #ifdef HAVE_QUOTA_SUPPORT if (ignore_quota) current->cap_effective |= CFS_CAP_SYS_RESOURCE_MASK; else current->cap_effective &= ~CFS_CAP_SYS_RESOURCE_MASK; #endif if (S_ISDIR(obj->oo_inode->i_mode)) osd_fid_pack((struct osd_fid_pack *)iam_rec, rec, &oti->oti_fid); else iam_rec = (struct iam_rec *) rec; rc = iam_insert(oh->ot_handle, bag, (const struct iam_key *)key, iam_rec, ipd); #ifdef HAVE_QUOTA_SUPPORT current->cap_effective = save; #endif osd_ipd_put(env, bag, ipd); LINVRNT(osd_invariant(obj)); RETURN(rc); } /** * Calls ldiskfs_add_entry() to add directory entry * into the directory. This is required for * interoperability mode (b11826) * * \retval 0, on success * \retval -ve, on error */ static int __osd_ea_add_rec(struct osd_thread_info *info, struct osd_object *pobj, struct osd_object *cobj, const char *name, struct thandle *th) { struct dentry *child; struct osd_thandle *oth; struct inode *cinode = cobj->oo_inode; int rc; oth = container_of(th, struct osd_thandle, ot_super); LASSERT(oth->ot_handle != NULL); LASSERT(oth->ot_handle->h_transaction != NULL); child = osd_child_dentry_get(info->oti_env, pobj, name, strlen(name)); rc = ldiskfs_add_entry(oth->ot_handle, child, cinode); RETURN(rc); } /** * Calls ldiskfs_add_dot_dotdot() to add dot and dotdot entries * into the directory.Also sets flags into osd object to * indicate dot and dotdot are created. This is required for * interoperability mode (b11826) * * \param dir directory for dot and dotdot fixup. * \param obj child object for linking * * \retval 0, on success * \retval -ve, on error */ static int osd_add_dot_dotdot(struct osd_thread_info *info, struct osd_object *dir, struct osd_object *obj, const char *name, struct thandle *th) { struct inode *parent_dir = obj->oo_inode; struct inode *inode = dir->oo_inode; struct osd_thandle *oth; int result = 0; oth = container_of(th, struct osd_thandle, ot_super); LASSERT(oth->ot_handle->h_transaction != NULL); LASSERT(S_ISDIR(dir->oo_inode->i_mode)); if (strcmp(name, dot) == 0) { if (dir->oo_compat_dot_created) { result = -EEXIST; } else { LASSERT(obj == dir); dir->oo_compat_dot_created = 1; result = 0; } } else if(strcmp(name, dotdot) == 0) { if (!dir->oo_compat_dot_created) return -EINVAL; if (dir->oo_compat_dotdot_created) return __osd_ea_add_rec(info, dir, obj, name, th); result = ldiskfs_add_dot_dotdot(oth->ot_handle, parent_dir, inode); if (result == 0) dir->oo_compat_dotdot_created = 1; } return result; } /** * It will call the appropriate osd_add* function and return the * value, return by respective functions. */ static int osd_ea_add_rec(const struct lu_env *env, struct osd_object *pobj, struct osd_object *cobj, const char *name, struct thandle *th) { struct osd_thread_info *info = osd_oti_get(env); int rc; if (name[0] == '.' && (name[1] == '\0' || (name[1] == '.' && name[2] =='\0'))) rc = osd_add_dot_dotdot(info, pobj, cobj, name, th); else rc = __osd_ea_add_rec(info, pobj, cobj, name, th); return rc; } /** * Calls ->lookup() to find dentry. From dentry get inode and * read inode's ea to get fid. This is required for interoperability * mode (b11826) * * \retval 0, on success * \retval -ve, on error */ static int osd_ea_lookup_rec(const struct lu_env *env, struct osd_object *obj, struct dt_rec *rec, const struct dt_key *key) { struct inode *dir = obj->oo_inode; struct dentry *dentry; struct ldiskfs_dir_entry_2 *de; struct buffer_head *bh; struct lu_fid *fid = (struct lu_fid *) rec; int ino; int rc; LASSERT(dir->i_op != NULL && dir->i_op->lookup != NULL); dentry = osd_child_dentry_get(env, obj, (char *)key, strlen((char *)key)); cfs_down_read(&obj->oo_ext_idx_sem); bh = ll_ldiskfs_find_entry(dir, dentry, &de); if (bh) { ino = le32_to_cpu(de->inode); brelse(bh); rc = osd_ea_fid_get(env, obj, ino, fid); } else rc = -ENOENT; cfs_up_read(&obj->oo_ext_idx_sem); RETURN (rc); } /** * Find the osd object for given fid. * * \param fid need to find the osd object having this fid * * \retval osd_object on success * \retval -ve on error */ struct osd_object *osd_object_find(const struct lu_env *env, struct dt_object *dt, const struct lu_fid *fid) { struct lu_device *ludev = dt->do_lu.lo_dev; struct osd_object *child = NULL; struct lu_object *luch; struct lu_object *lo; luch = lu_object_find(env, ludev, fid, NULL); if (!IS_ERR(luch)) { if (lu_object_exists(luch)) { lo = lu_object_locate(luch->lo_header, ludev->ld_type); if (lo != NULL) child = osd_obj(lo); else LU_OBJECT_DEBUG(D_ERROR, env, luch, "lu_object can't be located" ""DFID"\n", PFID(fid)); if (child == NULL) { lu_object_put(env, luch); CERROR("Unable to get osd_object\n"); child = ERR_PTR(-ENOENT); } } else { LU_OBJECT_DEBUG(D_ERROR, env, luch, "lu_object does not exists "DFID"\n", PFID(fid)); child = ERR_PTR(-ENOENT); } } else child = (void *)luch; return child; } /** * Put the osd object once done with it. * * \param obj osd object that needs to be put */ static inline void osd_object_put(const struct lu_env *env, struct osd_object *obj) { lu_object_put(env, &obj->oo_dt.do_lu); } /** * Index add function for interoperability mode (b11826). * It will add the directory entry.This entry is needed to * maintain name->fid mapping. * * \param key it is key i.e. file entry to be inserted * \param rec it is value of given key i.e. fid * * \retval 0, on success * \retval -ve, on error */ static int osd_index_ea_insert(const struct lu_env *env, struct dt_object *dt, const struct dt_rec *rec, const struct dt_key *key, struct thandle *th, struct lustre_capa *capa, int ignore_quota) { struct osd_object *obj = osd_dt_obj(dt); struct lu_fid *fid = (struct lu_fid *) rec; const char *name = (const char *)key; struct osd_object *child; #ifdef HAVE_QUOTA_SUPPORT cfs_cap_t save = current->cap_effective; #endif int rc; ENTRY; LASSERT(osd_invariant(obj)); LASSERT(dt_object_exists(dt)); LASSERT(th != NULL); if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_INSERT)) RETURN(-EACCES); child = osd_object_find(env, dt, fid); if (!IS_ERR(child)) { struct inode *inode = obj->oo_inode; struct osd_thread_info *oti = osd_oti_get(env); struct timespec *ctime = &oti->oti_time; struct timespec *mtime = &oti->oti_time2; *ctime = inode->i_ctime; *mtime = inode->i_mtime; #ifdef HAVE_QUOTA_SUPPORT if (ignore_quota) current->cap_effective |= CFS_CAP_SYS_RESOURCE_MASK; else current->cap_effective &= ~CFS_CAP_SYS_RESOURCE_MASK; #endif cfs_down_write(&obj->oo_ext_idx_sem); rc = osd_ea_add_rec(env, obj, child, name, th); cfs_up_write(&obj->oo_ext_idx_sem); #ifdef HAVE_QUOTA_SUPPORT current->cap_effective = save; #endif osd_object_put(env, child); /* xtime should not be updated with server-side time. */ cfs_spin_lock(&obj->oo_guard); inode->i_ctime = *ctime; inode->i_mtime = *mtime; cfs_spin_unlock(&obj->oo_guard); mark_inode_dirty(inode); } else { rc = PTR_ERR(child); } LASSERT(osd_invariant(obj)); RETURN(rc); } /** * Initialize osd Iterator for given osd index object. * * \param dt osd index object */ static struct dt_it *osd_it_iam_init(const struct lu_env *env, struct dt_object *dt, struct lustre_capa *capa) { struct osd_it_iam *it; struct osd_thread_info *oti = osd_oti_get(env); struct osd_object *obj = osd_dt_obj(dt); struct lu_object *lo = &dt->do_lu; struct iam_path_descr *ipd; struct iam_container *bag = &obj->oo_dir->od_container; LASSERT(lu_object_exists(lo)); if (osd_object_auth(env, dt, capa, CAPA_OPC_BODY_READ)) return ERR_PTR(-EACCES); it = &oti->oti_it; ipd = osd_it_ipd_get(env, bag); if (likely(ipd != NULL)) { it->oi_obj = obj; it->oi_ipd = ipd; lu_object_get(lo); iam_it_init(&it->oi_it, bag, IAM_IT_MOVE, ipd); return (struct dt_it *)it; } return ERR_PTR(-ENOMEM); } /** * free given Iterator. */ static void osd_it_iam_fini(const struct lu_env *env, struct dt_it *di) { struct osd_it_iam *it = (struct osd_it_iam *)di; struct osd_object *obj = it->oi_obj; iam_it_fini(&it->oi_it); osd_ipd_put(env, &obj->oo_dir->od_container, it->oi_ipd); lu_object_put(env, &obj->oo_dt.do_lu); } /** * Move Iterator to record specified by \a key * * \param di osd iterator * \param key key for index * * \retval +ve di points to record with least key not larger than key * \retval 0 di points to exact matched key * \retval -ve failure */ static int osd_it_iam_get(const struct lu_env *env, struct dt_it *di, const struct dt_key *key) { struct osd_it_iam *it = (struct osd_it_iam *)di; return iam_it_get(&it->oi_it, (const struct iam_key *)key); } /** * Release Iterator * * \param di osd iterator */ static void osd_it_iam_put(const struct lu_env *env, struct dt_it *di) { struct osd_it_iam *it = (struct osd_it_iam *)di; iam_it_put(&it->oi_it); } /** * Move iterator by one record * * \param di osd iterator * * \retval +1 end of container reached * \retval 0 success * \retval -ve failure */ static int osd_it_iam_next(const struct lu_env *env, struct dt_it *di) { struct osd_it_iam *it = (struct osd_it_iam *)di; return iam_it_next(&it->oi_it); } /** * Return pointer to the key under iterator. */ static struct dt_key *osd_it_iam_key(const struct lu_env *env, const struct dt_it *di) { struct osd_it_iam *it = (struct osd_it_iam *)di; return (struct dt_key *)iam_it_key_get(&it->oi_it); } /** * Return size of key under iterator (in bytes) */ static int osd_it_iam_key_size(const struct lu_env *env, const struct dt_it *di) { struct osd_it_iam *it = (struct osd_it_iam *)di; return iam_it_key_size(&it->oi_it); } static inline void osd_it_append_attrs(struct lu_dirent*ent, __u32 attr, int len, __u16 type) { struct luda_type *lt; const unsigned align = sizeof(struct luda_type) - 1; /* check if file type is required */ if (attr & LUDA_TYPE) { len = (len + align) & ~align; lt = (void *) ent->lde_name + len; lt->lt_type = cpu_to_le16(CFS_DTTOIF(type)); ent->lde_attrs |= LUDA_TYPE; } ent->lde_attrs = cpu_to_le32(ent->lde_attrs); } /** * build lu direct from backend fs dirent. */ static inline void osd_it_pack_dirent(struct lu_dirent *ent, struct lu_fid *fid, __u64 offset, char *name, __u16 namelen, __u16 type, __u32 attr) { fid_cpu_to_le(&ent->lde_fid, fid); ent->lde_attrs = LUDA_FID; ent->lde_hash = cpu_to_le64(offset); ent->lde_reclen = cpu_to_le16(lu_dirent_calc_size(namelen, attr)); strncpy(ent->lde_name, name, namelen); ent->lde_namelen = cpu_to_le16(namelen); /* append lustre attributes */ osd_it_append_attrs(ent, attr, namelen, type); } /** * Return pointer to the record under iterator. */ static int osd_it_iam_rec(const struct lu_env *env, const struct dt_it *di, struct lu_dirent *lde, __u32 attr) { struct osd_it_iam *it = (struct osd_it_iam *)di; struct osd_thread_info *info = osd_oti_get(env); struct lu_fid *fid = &info->oti_fid; const struct osd_fid_pack *rec; char *name; int namelen; __u64 hash; int rc; name = (char *)iam_it_key_get(&it->oi_it); if (IS_ERR(name)) RETURN(PTR_ERR(name)); namelen = iam_it_key_size(&it->oi_it); rec = (const struct osd_fid_pack *) iam_it_rec_get(&it->oi_it); if (IS_ERR(rec)) RETURN(PTR_ERR(rec)); rc = osd_fid_unpack(fid, rec); if (rc) RETURN(rc); hash = iam_it_store(&it->oi_it); /* IAM does not store object type in IAM index (dir) */ osd_it_pack_dirent(lde, fid, hash, name, namelen, 0, LUDA_FID); return 0; } /** * Returns cookie for current Iterator position. */ static __u64 osd_it_iam_store(const struct lu_env *env, const struct dt_it *di) { struct osd_it_iam *it = (struct osd_it_iam *)di; return iam_it_store(&it->oi_it); } /** * Restore iterator from cookie. * * \param di osd iterator * \param hash Iterator location cookie * * \retval +ve di points to record with least key not larger than key. * \retval 0 di points to exact matched key * \retval -ve failure */ static int osd_it_iam_load(const struct lu_env *env, const struct dt_it *di, __u64 hash) { struct osd_it_iam *it = (struct osd_it_iam *)di; return iam_it_load(&it->oi_it, hash); } static const struct dt_index_operations osd_index_iam_ops = { .dio_lookup = osd_index_iam_lookup, .dio_insert = osd_index_iam_insert, .dio_delete = osd_index_iam_delete, .dio_it = { .init = osd_it_iam_init, .fini = osd_it_iam_fini, .get = osd_it_iam_get, .put = osd_it_iam_put, .next = osd_it_iam_next, .key = osd_it_iam_key, .key_size = osd_it_iam_key_size, .rec = osd_it_iam_rec, .store = osd_it_iam_store, .load = osd_it_iam_load } }; /** * Creates or initializes iterator context. * * \retval struct osd_it_ea, iterator structure on success * */ static struct dt_it *osd_it_ea_init(const struct lu_env *env, struct dt_object *dt, struct lustre_capa *capa) { struct osd_object *obj = osd_dt_obj(dt); struct osd_thread_info *info = osd_oti_get(env); struct osd_it_ea *it = &info->oti_it_ea; struct lu_object *lo = &dt->do_lu; struct dentry *obj_dentry = &info->oti_it_dentry; ENTRY; LASSERT(lu_object_exists(lo)); obj_dentry->d_inode = obj->oo_inode; obj_dentry->d_sb = osd_sb(osd_obj2dev(obj)); obj_dentry->d_name.hash = 0; it->oie_rd_dirent = 0; it->oie_it_dirent = 0; it->oie_dirent = NULL; it->oie_buf = info->oti_it_ea_buf; it->oie_obj = obj; it->oie_file.f_pos = 0; it->oie_file.f_dentry = obj_dentry; it->oie_file.f_mapping = obj->oo_inode->i_mapping; it->oie_file.f_op = obj->oo_inode->i_fop; it->oie_file.private_data = NULL; lu_object_get(lo); RETURN((struct dt_it *) it); } /** * Destroy or finishes iterator context. * * \param di iterator structure to be destroyed */ static void osd_it_ea_fini(const struct lu_env *env, struct dt_it *di) { struct osd_it_ea *it = (struct osd_it_ea *)di; struct osd_object *obj = it->oie_obj; struct inode *inode = obj->oo_inode; ENTRY; it->oie_file.f_op->release(inode, &it->oie_file); lu_object_put(env, &obj->oo_dt.do_lu); EXIT; } /** * It position the iterator at given key, so that next lookup continues from * that key Or it is similar to dio_it->load() but based on a key, * rather than file position. * * As a special convention, osd_it_ea_get(env, di, "") has to rewind iterator * to the beginning. * * TODO: Presently return +1 considering it is only used by mdd_dir_is_empty(). */ static int osd_it_ea_get(const struct lu_env *env, struct dt_it *di, const struct dt_key *key) { struct osd_it_ea *it = (struct osd_it_ea *)di; ENTRY; LASSERT(((const char *)key)[0] == '\0'); it->oie_file.f_pos = 0; it->oie_rd_dirent = 0; it->oie_it_dirent = 0; it->oie_dirent = NULL; RETURN(+1); } /** * Does nothing */ static void osd_it_ea_put(const struct lu_env *env, struct dt_it *di) { } /** * It is called internally by ->readdir(). It fills the * iterator's in-memory data structure with required * information i.e. name, namelen, rec_size etc. * * \param buf in which information to be filled in. * \param name name of the file in given dir * * \retval 0 on success * \retval 1 on buffer full */ static int osd_ldiskfs_filldir(char *buf, const char *name, int namelen, loff_t offset, __u64 ino, unsigned d_type) { struct osd_it_ea *it = (struct osd_it_ea *)buf; struct osd_it_ea_dirent *ent = it->oie_dirent; ENTRY; /* this should never happen */ if (unlikely(namelen == 0 || namelen > LDISKFS_NAME_LEN)) { CERROR("ldiskfs return invalid namelen %d\n", namelen); RETURN(-EIO); } if ((void *) ent - it->oie_buf + sizeof(*ent) + namelen > OSD_IT_EA_BUFSIZE) RETURN(1); ent->oied_ino = ino; ent->oied_off = offset; ent->oied_namelen = namelen; ent->oied_type = d_type; memcpy(ent->oied_name, name, namelen); it->oie_rd_dirent++; it->oie_dirent = (void *) ent + cfs_size_round(sizeof(*ent) + namelen); RETURN(0); } /** * Calls ->readdir() to load a directory entry at a time * and stored it in iterator's in-memory data structure. * * \param di iterator's in memory structure * * \retval 0 on success * \retval -ve on error */ static int osd_ldiskfs_it_fill(const struct dt_it *di) { struct osd_it_ea *it = (struct osd_it_ea *)di; struct osd_object *obj = it->oie_obj; struct inode *inode = obj->oo_inode; int result = 0; ENTRY; it->oie_dirent = it->oie_buf; it->oie_rd_dirent = 0; cfs_down_read(&obj->oo_ext_idx_sem); result = inode->i_fop->readdir(&it->oie_file, it, (filldir_t) osd_ldiskfs_filldir); cfs_up_read(&obj->oo_ext_idx_sem); if (it->oie_rd_dirent == 0) { result = -EIO; } else { it->oie_dirent = it->oie_buf; it->oie_it_dirent = 1; } RETURN(result); } /** * It calls osd_ldiskfs_it_fill() which will use ->readdir() * to load a directory entry at a time and stored it in * iterator's in-memory data structure. * * \param di iterator's in memory structure * * \retval +ve iterator reached to end * \retval 0 iterator not reached to end * \retval -ve on error */ static int osd_it_ea_next(const struct lu_env *env, struct dt_it *di) { struct osd_it_ea *it = (struct osd_it_ea *)di; int rc; ENTRY; if (it->oie_it_dirent < it->oie_rd_dirent) { it->oie_dirent = (void *) it->oie_dirent + cfs_size_round(sizeof(struct osd_it_ea_dirent) + it->oie_dirent->oied_namelen); it->oie_it_dirent++; RETURN(0); } else { if (it->oie_file.f_pos == LDISKFS_HTREE_EOF) rc = +1; else rc = osd_ldiskfs_it_fill(di); } RETURN(rc); } /** * Returns the key at current position from iterator's in memory structure. * * \param di iterator's in memory structure * * \retval key i.e. struct dt_key on success */ static struct dt_key *osd_it_ea_key(const struct lu_env *env, const struct dt_it *di) { struct osd_it_ea *it = (struct osd_it_ea *)di; ENTRY; RETURN((struct dt_key *)it->oie_dirent->oied_name); } /** * Returns the key's size at current position from iterator's in memory structure. * * \param di iterator's in memory structure * * \retval key_size i.e. struct dt_key on success */ static int osd_it_ea_key_size(const struct lu_env *env, const struct dt_it *di) { struct osd_it_ea *it = (struct osd_it_ea *)di; ENTRY; RETURN(it->oie_dirent->oied_namelen); } /** * Returns the value (i.e. fid/igif) at current position from iterator's * in memory structure. * * \param di struct osd_it_ea, iterator's in memory structure * \param attr attr requested for dirent. * \param lde lustre dirent * * \retval 0 no error and \param lde has correct lustre dirent. * \retval -ve on error */ static inline int osd_it_ea_rec(const struct lu_env *env, const struct dt_it *di, struct lu_dirent *lde, __u32 attr) { struct osd_it_ea *it = (struct osd_it_ea *)di; struct osd_object *obj = it->oie_obj; struct osd_thread_info *info = osd_oti_get(env); struct lu_fid *fid = &info->oti_fid; int rc; ENTRY; rc = osd_ea_fid_get(env, obj, it->oie_dirent->oied_ino, fid); if (rc == 0) osd_it_pack_dirent(lde, fid, it->oie_dirent->oied_off, it->oie_dirent->oied_name, it->oie_dirent->oied_namelen, it->oie_dirent->oied_type, attr); RETURN(rc); } /** * Returns a cookie for current position of the iterator head, so that * user can use this cookie to load/start the iterator next time. * * \param di iterator's in memory structure * * \retval cookie for current position, on success */ static __u64 osd_it_ea_store(const struct lu_env *env, const struct dt_it *di) { struct osd_it_ea *it = (struct osd_it_ea *)di; ENTRY; RETURN(it->oie_dirent->oied_off); } /** * It calls osd_ldiskfs_it_fill() which will use ->readdir() * to load a directory entry at a time and stored it i inn, * in iterator's in-memory data structure. * * \param di struct osd_it_ea, iterator's in memory structure * * \retval +ve on success * \retval -ve on error */ static int osd_it_ea_load(const struct lu_env *env, const struct dt_it *di, __u64 hash) { struct osd_it_ea *it = (struct osd_it_ea *)di; int rc; ENTRY; it->oie_file.f_pos = hash; rc = osd_ldiskfs_it_fill(di); if (rc == 0) rc = +1; RETURN(rc); } /** * Index lookup function for interoperability mode (b11826). * * \param key, key i.e. file name to be searched * * \retval +ve, on success * \retval -ve, on error */ static int osd_index_ea_lookup(const struct lu_env *env, struct dt_object *dt, struct dt_rec *rec, const struct dt_key *key, struct lustre_capa *capa) { struct osd_object *obj = osd_dt_obj(dt); int rc = 0; ENTRY; LASSERT(S_ISDIR(obj->oo_inode->i_mode)); LINVRNT(osd_invariant(obj)); if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_LOOKUP)) return -EACCES; rc = osd_ea_lookup_rec(env, obj, rec, key); if (rc == 0) rc = +1; RETURN(rc); } /** * Index and Iterator operations for interoperability * mode (i.e. to run 2.0 mds on 1.8 disk) (b11826) */ static const struct dt_index_operations osd_index_ea_ops = { .dio_lookup = osd_index_ea_lookup, .dio_insert = osd_index_ea_insert, .dio_delete = osd_index_ea_delete, .dio_it = { .init = osd_it_ea_init, .fini = osd_it_ea_fini, .get = osd_it_ea_get, .put = osd_it_ea_put, .next = osd_it_ea_next, .key = osd_it_ea_key, .key_size = osd_it_ea_key_size, .rec = osd_it_ea_rec, .store = osd_it_ea_store, .load = osd_it_ea_load } }; static void *osd_key_init(const struct lu_context *ctx, struct lu_context_key *key) { struct osd_thread_info *info; OBD_ALLOC_PTR(info); if (info != NULL) { OBD_ALLOC(info->oti_it_ea_buf, OSD_IT_EA_BUFSIZE); if (info->oti_it_ea_buf != NULL) { info->oti_env = container_of(ctx, struct lu_env, le_ctx); } else { OBD_FREE_PTR(info); info = ERR_PTR(-ENOMEM); } } else { info = ERR_PTR(-ENOMEM); } return info; } static void osd_key_fini(const struct lu_context *ctx, struct lu_context_key *key, void* data) { struct osd_thread_info *info = data; OBD_FREE(info->oti_it_ea_buf, OSD_IT_EA_BUFSIZE); OBD_FREE_PTR(info); } static void osd_key_exit(const struct lu_context *ctx, struct lu_context_key *key, void *data) { struct osd_thread_info *info = data; LASSERT(info->oti_r_locks == 0); LASSERT(info->oti_w_locks == 0); LASSERT(info->oti_txns == 0); } /* type constructor/destructor: osd_type_init, osd_type_fini */ LU_TYPE_INIT_FINI(osd, &osd_key); static struct lu_context_key osd_key = { .lct_tags = LCT_DT_THREAD | LCT_MD_THREAD, .lct_init = osd_key_init, .lct_fini = osd_key_fini, .lct_exit = osd_key_exit }; static int osd_device_init(const struct lu_env *env, struct lu_device *d, const char *name, struct lu_device *next) { int rc; struct lu_context *ctx; /* context for commit hooks */ ctx = &osd_dev(d)->od_env_for_commit.le_ctx; rc = lu_context_init(ctx, LCT_MD_THREAD|LCT_REMEMBER|LCT_NOREF); if (rc == 0) { rc = osd_procfs_init(osd_dev(d), name); ctx->lc_cookie = 0x3; } return rc; } static int osd_shutdown(const struct lu_env *env, struct osd_device *o) { struct osd_thread_info *info = osd_oti_get(env); ENTRY; if (o->od_obj_area != NULL) { lu_object_put(env, &o->od_obj_area->do_lu); o->od_obj_area = NULL; } osd_oi_fini(info, &o->od_oi); RETURN(0); } static int osd_mount(const struct lu_env *env, struct osd_device *o, struct lustre_cfg *cfg) { struct lustre_mount_info *lmi; const char *dev = lustre_cfg_string(cfg, 0); struct lustre_disk_data *ldd; struct lustre_sb_info *lsi; ENTRY; if (o->od_mount != NULL) { CERROR("Already mounted (%s)\n", dev); RETURN(-EEXIST); } /* get mount */ lmi = server_get_mount(dev); if (lmi == NULL) { CERROR("Cannot get mount info for %s!\n", dev); RETURN(-EFAULT); } LASSERT(lmi != NULL); /* save lustre_mount_info in dt_device */ o->od_mount = lmi; lsi = s2lsi(lmi->lmi_sb); ldd = lsi->lsi_ldd; if (ldd->ldd_flags & LDD_F_IAM_DIR) { o->od_iop_mode = 0; LCONSOLE_WARN("OSD: IAM mode enabled\n"); } else o->od_iop_mode = 1; o->od_obj_area = NULL; RETURN(0); } static struct lu_device *osd_device_fini(const struct lu_env *env, struct lu_device *d) { int rc; ENTRY; shrink_dcache_sb(osd_sb(osd_dev(d))); osd_sync(env, lu2dt_dev(d)); rc = osd_procfs_fini(osd_dev(d)); if (rc) { CERROR("proc fini error %d \n", rc); RETURN (ERR_PTR(rc)); } if (osd_dev(d)->od_mount) server_put_mount(osd_dev(d)->od_mount->lmi_name, osd_dev(d)->od_mount->lmi_mnt); osd_dev(d)->od_mount = NULL; lu_context_fini(&osd_dev(d)->od_env_for_commit.le_ctx); RETURN(NULL); } static struct lu_device *osd_device_alloc(const struct lu_env *env, struct lu_device_type *t, struct lustre_cfg *cfg) { struct lu_device *l; struct osd_device *o; OBD_ALLOC_PTR(o); if (o != NULL) { int result; result = dt_device_init(&o->od_dt_dev, t); if (result == 0) { l = osd2lu_dev(o); l->ld_ops = &osd_lu_ops; o->od_dt_dev.dd_ops = &osd_dt_ops; cfs_spin_lock_init(&o->od_osfs_lock); o->od_osfs_age = cfs_time_shift_64(-1000); o->od_capa_hash = init_capa_hash(); if (o->od_capa_hash == NULL) { dt_device_fini(&o->od_dt_dev); l = ERR_PTR(-ENOMEM); } } else l = ERR_PTR(result); if (IS_ERR(l)) OBD_FREE_PTR(o); } else l = ERR_PTR(-ENOMEM); return l; } static struct lu_device *osd_device_free(const struct lu_env *env, struct lu_device *d) { struct osd_device *o = osd_dev(d); ENTRY; cleanup_capa_hash(o->od_capa_hash); dt_device_fini(&o->od_dt_dev); OBD_FREE_PTR(o); RETURN(NULL); } static int osd_process_config(const struct lu_env *env, struct lu_device *d, struct lustre_cfg *cfg) { struct osd_device *o = osd_dev(d); int err; ENTRY; switch(cfg->lcfg_command) { case LCFG_SETUP: err = osd_mount(env, o, cfg); break; case LCFG_CLEANUP: err = osd_shutdown(env, o); break; default: err = -ENOSYS; } RETURN(err); } static int osd_recovery_complete(const struct lu_env *env, struct lu_device *d) { RETURN(0); } static int osd_prepare(const struct lu_env *env, struct lu_device *pdev, struct lu_device *dev) { struct osd_device *osd = osd_dev(dev); struct lustre_sb_info *lsi; struct lustre_disk_data *ldd; struct lustre_mount_info *lmi; struct osd_thread_info *oti = osd_oti_get(env); struct dt_object *d; int result; ENTRY; /* 1. initialize oi before any file create or file open */ result = osd_oi_init(oti, &osd->od_oi, &osd->od_dt_dev, lu2md_dev(pdev)); if (result != 0) RETURN(result); lmi = osd->od_mount; lsi = s2lsi(lmi->lmi_sb); ldd = lsi->lsi_ldd; /* 2. setup local objects */ result = llo_local_objects_setup(env, lu2md_dev(pdev), lu2dt_dev(dev)); if (result) goto out; /* 3. open remote object dir */ d = dt_store_open(env, lu2dt_dev(dev), "", remote_obj_dir, &oti->oti_fid); if (!IS_ERR(d)) { osd->od_obj_area = d; result = 0; } else { result = PTR_ERR(d); osd->od_obj_area = NULL; } out: RETURN(result); } static const struct lu_object_operations osd_lu_obj_ops = { .loo_object_init = osd_object_init, .loo_object_delete = osd_object_delete, .loo_object_release = osd_object_release, .loo_object_free = osd_object_free, .loo_object_print = osd_object_print, .loo_object_invariant = osd_object_invariant }; static const struct lu_device_operations osd_lu_ops = { .ldo_object_alloc = osd_object_alloc, .ldo_process_config = osd_process_config, .ldo_recovery_complete = osd_recovery_complete, .ldo_prepare = osd_prepare, }; static const struct lu_device_type_operations osd_device_type_ops = { .ldto_init = osd_type_init, .ldto_fini = osd_type_fini, .ldto_start = osd_type_start, .ldto_stop = osd_type_stop, .ldto_device_alloc = osd_device_alloc, .ldto_device_free = osd_device_free, .ldto_device_init = osd_device_init, .ldto_device_fini = osd_device_fini }; static struct lu_device_type osd_device_type = { .ldt_tags = LU_DEVICE_DT, .ldt_name = LUSTRE_OSD_NAME, .ldt_ops = &osd_device_type_ops, .ldt_ctx_tags = LCT_MD_THREAD|LCT_DT_THREAD }; /* * lprocfs legacy support. */ static struct obd_ops osd_obd_device_ops = { .o_owner = THIS_MODULE }; static struct lu_local_obj_desc llod_osd_rem_obj_dir = { .llod_name = remote_obj_dir, .llod_oid = OSD_REM_OBJ_DIR_OID, .llod_is_index = 1, .llod_feat = &dt_directory_features, }; static int __init osd_mod_init(void) { struct lprocfs_static_vars lvars; osd_oi_mod_init(); llo_local_obj_register(&llod_osd_rem_obj_dir); lprocfs_osd_init_vars(&lvars); return class_register_type(&osd_obd_device_ops, NULL, lvars.module_vars, LUSTRE_OSD_NAME, &osd_device_type); } static void __exit osd_mod_exit(void) { llo_local_obj_unregister(&llod_osd_rem_obj_dir); class_unregister_type(LUSTRE_OSD_NAME); } MODULE_AUTHOR("Sun Microsystems, Inc. "); MODULE_DESCRIPTION("Lustre Object Storage Device ("LUSTRE_OSD_NAME")"); MODULE_LICENSE("GPL"); cfs_module(osd, "0.0.2", osd_mod_init, osd_mod_exit);