| /* |
| * 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 (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. |
| * Use is subject to license terms. |
| * |
| * Copyright (c) 2011, 2012, Intel Corporation. |
| */ |
| /* |
| * This file is part of Lustre, http://www.lustre.org/ |
| * Lustre is a trademark of Sun Microsystems, Inc. |
| */ |
| |
| #ifndef __LUSTRE_DT_OBJECT_H |
| #define __LUSTRE_DT_OBJECT_H |
| |
| /** \defgroup dt dt |
| * Sub-class of lu_object with methods common for "data" objects in OST stack. |
| * |
| * Data objects behave like regular files: you can read/write them, get and |
| * set their attributes. Implementation of dt interface is supposed to |
| * implement some form of garbage collection, normally reference counting |
| * (nlink) based one. |
| * |
| * Examples: osd (lustre/osd) is an implementation of dt interface. |
| * @{ |
| */ |
| |
| |
| /* |
| * super-class definitions. |
| */ |
| #include <lu_object.h> |
| |
| #include <linux/libcfs/libcfs.h> |
| |
| struct seq_file; |
| struct proc_dir_entry; |
| struct lustre_cfg; |
| |
| struct thandle; |
| struct dt_device; |
| struct dt_object; |
| struct dt_index_features; |
| struct niobuf_local; |
| struct niobuf_remote; |
| struct ldlm_enqueue_info; |
| |
| typedef enum { |
| MNTOPT_USERXATTR = 0x00000001, |
| MNTOPT_ACL = 0x00000002, |
| } mntopt_t; |
| |
| struct dt_device_param { |
| unsigned ddp_max_name_len; |
| unsigned ddp_max_nlink; |
| unsigned ddp_block_shift; |
| mntopt_t ddp_mntopts; |
| unsigned ddp_max_ea_size; |
| void *ddp_mnt; /* XXX: old code can retrieve mnt -bzzz */ |
| int ddp_mount_type; |
| unsigned long long ddp_maxbytes; |
| /* percentage of available space to reserve for grant error margin */ |
| int ddp_grant_reserved; |
| /* per-inode space consumption */ |
| short ddp_inodespace; |
| /* per-fragment grant overhead to be used by client for grant |
| * calculation */ |
| int ddp_grant_frag; |
| }; |
| |
| /** |
| * Per-transaction commit callback function |
| */ |
| struct dt_txn_commit_cb; |
| typedef void (*dt_cb_t)(struct lu_env *env, struct thandle *th, |
| struct dt_txn_commit_cb *cb, int err); |
| /** |
| * Special per-transaction callback for cases when just commit callback |
| * is needed and per-device callback are not convenient to use |
| */ |
| #define TRANS_COMMIT_CB_MAGIC 0xa0a00a0a |
| #define MAX_COMMIT_CB_STR_LEN 32 |
| |
| struct dt_txn_commit_cb { |
| struct list_head dcb_linkage; |
| dt_cb_t dcb_func; |
| __u32 dcb_magic; |
| char dcb_name[MAX_COMMIT_CB_STR_LEN]; |
| }; |
| |
| /** |
| * Operations on dt device. |
| */ |
| struct dt_device_operations { |
| /** |
| * Return device-wide statistics. |
| */ |
| int (*dt_statfs)(const struct lu_env *env, |
| struct dt_device *dev, struct obd_statfs *osfs); |
| /** |
| * Create transaction, described by \a param. |
| */ |
| struct thandle *(*dt_trans_create)(const struct lu_env *env, |
| struct dt_device *dev); |
| /** |
| * Start transaction, described by \a param. |
| */ |
| int (*dt_trans_start)(const struct lu_env *env, |
| struct dt_device *dev, struct thandle *th); |
| /** |
| * Finish previously started transaction. |
| */ |
| int (*dt_trans_stop)(const struct lu_env *env, |
| struct thandle *th); |
| /** |
| * Add commit callback to the transaction. |
| */ |
| int (*dt_trans_cb_add)(struct thandle *th, |
| struct dt_txn_commit_cb *dcb); |
| /** |
| * Return fid of root index object. |
| */ |
| int (*dt_root_get)(const struct lu_env *env, |
| struct dt_device *dev, struct lu_fid *f); |
| /** |
| * Return device configuration data. |
| */ |
| void (*dt_conf_get)(const struct lu_env *env, |
| const struct dt_device *dev, |
| struct dt_device_param *param); |
| /** |
| * handling device state, mostly for tests |
| */ |
| int (*dt_sync)(const struct lu_env *env, struct dt_device *dev); |
| int (*dt_ro)(const struct lu_env *env, struct dt_device *dev); |
| /** |
| * Start a transaction commit asynchronously |
| * |
| * \param env environment |
| * \param dev dt_device to start commit on |
| * |
| * \return 0 success, negative value if error |
| */ |
| int (*dt_commit_async)(const struct lu_env *env, |
| struct dt_device *dev); |
| /** |
| * Initialize capability context. |
| */ |
| int (*dt_init_capa_ctxt)(const struct lu_env *env, |
| struct dt_device *dev, |
| int mode, unsigned long timeout, |
| __u32 alg, struct lustre_capa_key *keys); |
| }; |
| |
| struct dt_index_features { |
| /** required feature flags from enum dt_index_flags */ |
| __u32 dif_flags; |
| /** minimal required key size */ |
| size_t dif_keysize_min; |
| /** maximal required key size, 0 if no limit */ |
| size_t dif_keysize_max; |
| /** minimal required record size */ |
| size_t dif_recsize_min; |
| /** maximal required record size, 0 if no limit */ |
| size_t dif_recsize_max; |
| /** pointer size for record */ |
| size_t dif_ptrsize; |
| }; |
| |
| enum dt_index_flags { |
| /** index supports variable sized keys */ |
| DT_IND_VARKEY = 1 << 0, |
| /** index supports variable sized records */ |
| DT_IND_VARREC = 1 << 1, |
| /** index can be modified */ |
| DT_IND_UPDATE = 1 << 2, |
| /** index supports records with non-unique (duplicate) keys */ |
| DT_IND_NONUNQ = 1 << 3, |
| /** |
| * index support fixed-size keys sorted with natural numerical way |
| * and is able to return left-side value if no exact value found |
| */ |
| DT_IND_RANGE = 1 << 4, |
| }; |
| |
| /** |
| * Features, required from index to support file system directories (mapping |
| * names to fids). |
| */ |
| extern const struct dt_index_features dt_directory_features; |
| extern const struct dt_index_features dt_otable_features; |
| extern const struct dt_index_features dt_lfsck_features; |
| |
| /* index features supported by the accounting objects */ |
| extern const struct dt_index_features dt_acct_features; |
| |
| /* index features supported by the quota global indexes */ |
| extern const struct dt_index_features dt_quota_glb_features; |
| |
| /* index features supported by the quota slave indexes */ |
| extern const struct dt_index_features dt_quota_slv_features; |
| |
| /** |
| * This is a general purpose dt allocation hint. |
| * It now contains the parent object. |
| * It can contain any allocation hint in the future. |
| */ |
| struct dt_allocation_hint { |
| struct dt_object *dah_parent; |
| __u32 dah_mode; |
| }; |
| |
| /** |
| * object type specifier. |
| */ |
| |
| enum dt_format_type { |
| DFT_REGULAR, |
| DFT_DIR, |
| /** for mknod */ |
| DFT_NODE, |
| /** for special index */ |
| DFT_INDEX, |
| /** for symbolic link */ |
| DFT_SYM, |
| }; |
| |
| /** |
| * object format specifier. |
| */ |
| struct dt_object_format { |
| /** type for dt object */ |
| enum dt_format_type dof_type; |
| union { |
| struct dof_regular { |
| int striped; |
| } dof_reg; |
| struct dof_dir { |
| } dof_dir; |
| struct dof_node { |
| } dof_node; |
| /** |
| * special index need feature as parameter to create |
| * special idx |
| */ |
| struct dof_index { |
| const struct dt_index_features *di_feat; |
| } dof_idx; |
| } u; |
| }; |
| |
| enum dt_format_type dt_mode_to_dft(__u32 mode); |
| |
| typedef __u64 dt_obj_version_t; |
| |
| /** |
| * Per-dt-object operations. |
| */ |
| struct dt_object_operations { |
| void (*do_read_lock)(const struct lu_env *env, |
| struct dt_object *dt, unsigned role); |
| void (*do_write_lock)(const struct lu_env *env, |
| struct dt_object *dt, unsigned role); |
| void (*do_read_unlock)(const struct lu_env *env, |
| struct dt_object *dt); |
| void (*do_write_unlock)(const struct lu_env *env, |
| struct dt_object *dt); |
| int (*do_write_locked)(const struct lu_env *env, |
| struct dt_object *dt); |
| /** |
| * Note: following ->do_{x,}attr_{set,get}() operations are very |
| * similar to ->moo_{x,}attr_{set,get}() operations in struct |
| * md_object_operations (see md_object.h). These operations are not in |
| * lu_object_operations, because ->do_{x,}attr_set() versions take |
| * transaction handle as an argument (this transaction is started by |
| * caller). We might factor ->do_{x,}attr_get() into |
| * lu_object_operations, but that would break existing symmetry. |
| */ |
| |
| /** |
| * Return standard attributes. |
| * |
| * precondition: lu_object_exists(&dt->do_lu); |
| */ |
| int (*do_attr_get)(const struct lu_env *env, |
| struct dt_object *dt, struct lu_attr *attr, |
| struct lustre_capa *capa); |
| /** |
| * Set standard attributes. |
| * |
| * precondition: dt_object_exists(dt); |
| */ |
| int (*do_declare_attr_set)(const struct lu_env *env, |
| struct dt_object *dt, |
| const struct lu_attr *attr, |
| struct thandle *handle); |
| int (*do_attr_set)(const struct lu_env *env, |
| struct dt_object *dt, |
| const struct lu_attr *attr, |
| struct thandle *handle, |
| struct lustre_capa *capa); |
| /** |
| * Return a value of an extended attribute. |
| * |
| * precondition: dt_object_exists(dt); |
| */ |
| int (*do_xattr_get)(const struct lu_env *env, struct dt_object *dt, |
| struct lu_buf *buf, const char *name, |
| struct lustre_capa *capa); |
| /** |
| * Set value of an extended attribute. |
| * |
| * \a fl - flags from enum lu_xattr_flags |
| * |
| * precondition: dt_object_exists(dt); |
| */ |
| int (*do_declare_xattr_set)(const struct lu_env *env, |
| struct dt_object *dt, |
| const struct lu_buf *buf, |
| const char *name, int fl, |
| struct thandle *handle); |
| int (*do_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); |
| /** |
| * Delete existing extended attribute. |
| * |
| * precondition: dt_object_exists(dt); |
| */ |
| int (*do_declare_xattr_del)(const struct lu_env *env, |
| struct dt_object *dt, |
| const char *name, struct thandle *handle); |
| int (*do_xattr_del)(const struct lu_env *env, |
| struct dt_object *dt, |
| const char *name, struct thandle *handle, |
| struct lustre_capa *capa); |
| /** |
| * Place list of existing extended attributes into \a buf (which has |
| * length len). |
| * |
| * precondition: dt_object_exists(dt); |
| */ |
| int (*do_xattr_list)(const struct lu_env *env, |
| struct dt_object *dt, struct lu_buf *buf, |
| struct lustre_capa *capa); |
| /** |
| * Init allocation hint using parent object and child mode. |
| * (1) The \a parent might be NULL if this is a partial creation for |
| * remote object. |
| * (2) The type of child is in \a child_mode. |
| * (3) The result hint is stored in \a ah; |
| */ |
| void (*do_ah_init)(const struct lu_env *env, |
| struct dt_allocation_hint *ah, |
| struct dt_object *parent, |
| struct dt_object *child, |
| umode_t child_mode); |
| /** |
| * Create new object on this device. |
| * |
| * precondition: !dt_object_exists(dt); |
| * postcondition: ergo(result == 0, dt_object_exists(dt)); |
| */ |
| int (*do_declare_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); |
| int (*do_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); |
| |
| /** |
| Destroy object on this device |
| * precondition: !dt_object_exists(dt); |
| * postcondition: ergo(result == 0, dt_object_exists(dt)); |
| */ |
| int (*do_declare_destroy)(const struct lu_env *env, |
| struct dt_object *dt, |
| struct thandle *th); |
| int (*do_destroy)(const struct lu_env *env, struct dt_object *dt, |
| struct thandle *th); |
| |
| /** |
| * Announce that this object is going to be used as an index. This |
| * operation check that object supports indexing operations and |
| * installs appropriate dt_index_operations vector on success. |
| * |
| * Also probes for features. Operation is successful if all required |
| * features are supported. |
| */ |
| int (*do_index_try)(const struct lu_env *env, |
| struct dt_object *dt, |
| const struct dt_index_features *feat); |
| /** |
| * Add nlink of the object |
| * precondition: dt_object_exists(dt); |
| */ |
| int (*do_declare_ref_add)(const struct lu_env *env, |
| struct dt_object *dt, struct thandle *th); |
| int (*do_ref_add)(const struct lu_env *env, |
| struct dt_object *dt, struct thandle *th); |
| /** |
| * Del nlink of the object |
| * precondition: dt_object_exists(dt); |
| */ |
| int (*do_declare_ref_del)(const struct lu_env *env, |
| struct dt_object *dt, struct thandle *th); |
| int (*do_ref_del)(const struct lu_env *env, |
| struct dt_object *dt, struct thandle *th); |
| |
| struct obd_capa *(*do_capa_get)(const struct lu_env *env, |
| struct dt_object *dt, |
| struct lustre_capa *old, |
| __u64 opc); |
| int (*do_object_sync)(const struct lu_env *, struct dt_object *); |
| /** |
| * Get object info of next level. Currently, only get inode from osd. |
| * This is only used by quota b=16542 |
| * precondition: dt_object_exists(dt); |
| */ |
| int (*do_data_get)(const struct lu_env *env, struct dt_object *dt, |
| void **data); |
| |
| /** |
| * Lock object. |
| */ |
| int (*do_object_lock)(const struct lu_env *env, struct dt_object *dt, |
| struct lustre_handle *lh, |
| struct ldlm_enqueue_info *einfo, |
| void *policy); |
| }; |
| |
| /** |
| * Per-dt-object operations on "file body". |
| */ |
| struct dt_body_operations { |
| /** |
| * precondition: dt_object_exists(dt); |
| */ |
| ssize_t (*dbo_read)(const struct lu_env *env, struct dt_object *dt, |
| struct lu_buf *buf, loff_t *pos, |
| struct lustre_capa *capa); |
| /** |
| * precondition: dt_object_exists(dt); |
| */ |
| ssize_t (*dbo_declare_write)(const struct lu_env *env, |
| struct dt_object *dt, |
| const loff_t size, loff_t pos, |
| struct thandle *handle); |
| ssize_t (*dbo_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); |
| /* |
| * methods for zero-copy IO |
| */ |
| |
| /* |
| * precondition: dt_object_exists(dt); |
| * returns: |
| * < 0 - error code |
| * = 0 - illegal |
| * > 0 - number of local buffers prepared |
| */ |
| int (*dbo_bufs_get)(const struct lu_env *env, struct dt_object *dt, |
| loff_t pos, ssize_t len, struct niobuf_local *lb, |
| int rw, struct lustre_capa *capa); |
| /* |
| * precondition: dt_object_exists(dt); |
| */ |
| int (*dbo_bufs_put)(const struct lu_env *env, struct dt_object *dt, |
| struct niobuf_local *lb, int nr); |
| /* |
| * precondition: dt_object_exists(dt); |
| */ |
| int (*dbo_write_prep)(const struct lu_env *env, struct dt_object *dt, |
| struct niobuf_local *lb, int nr); |
| /* |
| * precondition: dt_object_exists(dt); |
| */ |
| int (*dbo_declare_write_commit)(const struct lu_env *env, |
| struct dt_object *dt, |
| struct niobuf_local *, |
| int, struct thandle *); |
| /* |
| * precondition: dt_object_exists(dt); |
| */ |
| int (*dbo_write_commit)(const struct lu_env *env, struct dt_object *dt, |
| struct niobuf_local *, int, struct thandle *); |
| /* |
| * precondition: dt_object_exists(dt); |
| */ |
| int (*dbo_read_prep)(const struct lu_env *env, struct dt_object *dt, |
| struct niobuf_local *lnb, int nr); |
| int (*dbo_fiemap_get)(const struct lu_env *env, struct dt_object *dt, |
| struct ll_user_fiemap *fm); |
| /** |
| * Punch object's content |
| * precondition: regular object, not index |
| */ |
| int (*dbo_declare_punch)(const struct lu_env *, struct dt_object *, |
| __u64, __u64, struct thandle *th); |
| int (*dbo_punch)(const struct lu_env *env, struct dt_object *dt, |
| __u64 start, __u64 end, struct thandle *th, |
| struct lustre_capa *capa); |
| }; |
| |
| /** |
| * Incomplete type of index record. |
| */ |
| struct dt_rec; |
| |
| /** |
| * Incomplete type of index key. |
| */ |
| struct dt_key; |
| |
| /** |
| * Incomplete type of dt iterator. |
| */ |
| struct dt_it; |
| |
| /** |
| * Per-dt-object operations on object as index. |
| */ |
| struct dt_index_operations { |
| /** |
| * precondition: dt_object_exists(dt); |
| */ |
| int (*dio_lookup)(const struct lu_env *env, struct dt_object *dt, |
| struct dt_rec *rec, const struct dt_key *key, |
| struct lustre_capa *capa); |
| /** |
| * precondition: dt_object_exists(dt); |
| */ |
| int (*dio_declare_insert)(const struct lu_env *env, |
| struct dt_object *dt, |
| const struct dt_rec *rec, |
| const struct dt_key *key, |
| struct thandle *handle); |
| int (*dio_insert)(const struct lu_env *env, struct dt_object *dt, |
| const struct dt_rec *rec, const struct dt_key *key, |
| struct thandle *handle, struct lustre_capa *capa, |
| int ignore_quota); |
| /** |
| * precondition: dt_object_exists(dt); |
| */ |
| int (*dio_declare_delete)(const struct lu_env *env, |
| struct dt_object *dt, |
| const struct dt_key *key, |
| struct thandle *handle); |
| int (*dio_delete)(const struct lu_env *env, struct dt_object *dt, |
| const struct dt_key *key, struct thandle *handle, |
| struct lustre_capa *capa); |
| /** |
| * Iterator interface |
| */ |
| struct dt_it_ops { |
| /** |
| * Allocate and initialize new iterator. |
| * |
| * precondition: dt_object_exists(dt); |
| */ |
| struct dt_it *(*init)(const struct lu_env *env, |
| struct dt_object *dt, |
| __u32 attr, |
| struct lustre_capa *capa); |
| void (*fini)(const struct lu_env *env, |
| struct dt_it *di); |
| int (*get)(const struct lu_env *env, |
| struct dt_it *di, |
| const struct dt_key *key); |
| void (*put)(const struct lu_env *env, |
| struct dt_it *di); |
| int (*next)(const struct lu_env *env, |
| struct dt_it *di); |
| struct dt_key *(*key)(const struct lu_env *env, |
| const struct dt_it *di); |
| int (*key_size)(const struct lu_env *env, |
| const struct dt_it *di); |
| int (*rec)(const struct lu_env *env, |
| const struct dt_it *di, |
| struct dt_rec *rec, |
| __u32 attr); |
| __u64 (*store)(const struct lu_env *env, |
| const struct dt_it *di); |
| int (*load)(const struct lu_env *env, |
| const struct dt_it *di, __u64 hash); |
| int (*key_rec)(const struct lu_env *env, |
| const struct dt_it *di, void* key_rec); |
| } dio_it; |
| }; |
| |
| enum dt_otable_it_valid { |
| DOIV_ERROR_HANDLE = 0x0001, |
| }; |
| |
| enum dt_otable_it_flags { |
| /* Exit when fail. */ |
| DOIF_FAILOUT = 0x0001, |
| |
| /* Reset iteration position to the device beginning. */ |
| DOIF_RESET = 0x0002, |
| |
| /* There is up layer component uses the iteration. */ |
| DOIF_OUTUSED = 0x0004, |
| }; |
| |
| /* otable based iteration needs to use the common DT interation APIs. |
| * To initialize the iteration, it needs call dio_it::init() firstly. |
| * Here is how the otable based iteration should prepare arguments to |
| * call dt_it_ops::init(). |
| * |
| * For otable based iteration, the 32-bits 'attr' for dt_it_ops::init() |
| * is composed of two parts: |
| * low 16-bits is for valid bits, high 16-bits is for flags bits. */ |
| #define DT_OTABLE_IT_FLAGS_SHIFT 16 |
| #define DT_OTABLE_IT_FLAGS_MASK 0xffff0000 |
| |
| struct dt_device { |
| struct lu_device dd_lu_dev; |
| const struct dt_device_operations *dd_ops; |
| |
| /** |
| * List of dt_txn_callback (see below). This is not protected in any |
| * way, because callbacks are supposed to be added/deleted only during |
| * single-threaded start-up shut-down procedures. |
| */ |
| struct list_head dd_txn_callbacks; |
| }; |
| |
| int dt_device_init(struct dt_device *dev, struct lu_device_type *t); |
| void dt_device_fini(struct dt_device *dev); |
| |
| static inline int lu_device_is_dt(const struct lu_device *d) |
| { |
| return ergo(d != NULL, d->ld_type->ldt_tags & LU_DEVICE_DT); |
| } |
| |
| static inline struct dt_device * lu2dt_dev(struct lu_device *l) |
| { |
| LASSERT(lu_device_is_dt(l)); |
| return container_of0(l, struct dt_device, dd_lu_dev); |
| } |
| |
| struct dt_object { |
| struct lu_object do_lu; |
| const struct dt_object_operations *do_ops; |
| const struct dt_body_operations *do_body_ops; |
| const struct dt_index_operations *do_index_ops; |
| }; |
| |
| /* |
| * In-core representation of per-device local object OID storage |
| */ |
| struct local_oid_storage { |
| /* all initialized llog systems on this node linked by this */ |
| struct list_head los_list; |
| |
| /* how many handle's reference this los has */ |
| atomic_t los_refcount; |
| struct dt_device *los_dev; |
| struct dt_object *los_obj; |
| |
| /* data used to generate new fids */ |
| struct mutex los_id_lock; |
| __u64 los_seq; |
| __u32 los_last_oid; |
| }; |
| |
| static inline struct dt_object *lu2dt(struct lu_object *l) |
| { |
| LASSERT(l == NULL || IS_ERR(l) || lu_device_is_dt(l->lo_dev)); |
| return container_of0(l, struct dt_object, do_lu); |
| } |
| |
| int dt_object_init(struct dt_object *obj, |
| struct lu_object_header *h, struct lu_device *d); |
| |
| void dt_object_fini(struct dt_object *obj); |
| |
| static inline int dt_object_exists(const struct dt_object *dt) |
| { |
| return lu_object_exists(&dt->do_lu); |
| } |
| |
| static inline int dt_object_remote(const struct dt_object *dt) |
| { |
| return lu_object_remote(&dt->do_lu); |
| } |
| |
| static inline struct dt_object *lu2dt_obj(struct lu_object *o) |
| { |
| LASSERT(ergo(o != NULL, lu_device_is_dt(o->lo_dev))); |
| return container_of0(o, struct dt_object, do_lu); |
| } |
| |
| /** |
| * This is the general purpose transaction handle. |
| * 1. Transaction Life Cycle |
| * This transaction handle is allocated upon starting a new transaction, |
| * and deallocated after this transaction is committed. |
| * 2. Transaction Nesting |
| * We do _NOT_ support nested transaction. So, every thread should only |
| * have one active transaction, and a transaction only belongs to one |
| * thread. Due to this, transaction handle need no reference count. |
| * 3. Transaction & dt_object locking |
| * dt_object locks should be taken inside transaction. |
| * 4. Transaction & RPC |
| * No RPC request should be issued inside transaction. |
| */ |
| struct thandle { |
| /** the dt device on which the transactions are executed */ |
| struct dt_device *th_dev; |
| |
| /** context for this transaction, tag is LCT_TX_HANDLE */ |
| struct lu_context th_ctx; |
| |
| /** additional tags (layers can add in declare) */ |
| __u32 th_tags; |
| |
| /** the last operation result in this transaction. |
| * this value is used in recovery */ |
| __s32 th_result; |
| |
| /** whether we need sync commit */ |
| unsigned int th_sync:1; |
| |
| /* local transation, no need to inform other layers */ |
| unsigned int th_local:1; |
| |
| /* In DNE, one transaction can be disassemblied into |
| * updates on several different MDTs, and these updates |
| * will be attached to th_remote_update_list per target. |
| * Only single thread will access the list, no need lock |
| */ |
| struct list_head th_remote_update_list; |
| struct update_request *th_current_request; |
| }; |
| |
| /** |
| * Transaction call-backs. |
| * |
| * These are invoked by osd (or underlying transaction engine) when |
| * transaction changes state. |
| * |
| * Call-backs are used by upper layers to modify transaction parameters and to |
| * perform some actions on for each transaction state transition. Typical |
| * example is mdt registering call-back to write into last-received file |
| * before each transaction commit. |
| */ |
| struct dt_txn_callback { |
| int (*dtc_txn_start)(const struct lu_env *env, |
| struct thandle *txn, void *cookie); |
| int (*dtc_txn_stop)(const struct lu_env *env, |
| struct thandle *txn, void *cookie); |
| void (*dtc_txn_commit)(struct thandle *txn, void *cookie); |
| void *dtc_cookie; |
| __u32 dtc_tag; |
| struct list_head dtc_linkage; |
| }; |
| |
| void dt_txn_callback_add(struct dt_device *dev, struct dt_txn_callback *cb); |
| void dt_txn_callback_del(struct dt_device *dev, struct dt_txn_callback *cb); |
| |
| int dt_txn_hook_start(const struct lu_env *env, |
| struct dt_device *dev, struct thandle *txn); |
| int dt_txn_hook_stop(const struct lu_env *env, struct thandle *txn); |
| void dt_txn_hook_commit(struct thandle *txn); |
| |
| int dt_try_as_dir(const struct lu_env *env, struct dt_object *obj); |
| |
| /** |
| * Callback function used for parsing path. |
| * \see llo_store_resolve |
| */ |
| typedef int (*dt_entry_func_t)(const struct lu_env *env, |
| const char *name, |
| void *pvt); |
| |
| #define DT_MAX_PATH 1024 |
| |
| int dt_path_parser(const struct lu_env *env, |
| char *local, dt_entry_func_t entry_func, |
| void *data); |
| |
| struct dt_object * |
| dt_store_resolve(const struct lu_env *env, struct dt_device *dt, |
| const char *path, struct lu_fid *fid); |
| |
| struct dt_object *dt_store_open(const struct lu_env *env, |
| struct dt_device *dt, |
| const char *dirname, |
| const char *filename, |
| struct lu_fid *fid); |
| |
| struct dt_object *dt_find_or_create(const struct lu_env *env, |
| struct dt_device *dt, |
| const struct lu_fid *fid, |
| struct dt_object_format *dof, |
| struct lu_attr *attr); |
| |
| struct dt_object *dt_locate_at(const struct lu_env *env, |
| struct dt_device *dev, |
| const struct lu_fid *fid, |
| struct lu_device *top_dev); |
| static inline struct dt_object * |
| dt_locate(const struct lu_env *env, struct dt_device *dev, |
| const struct lu_fid *fid) |
| { |
| return dt_locate_at(env, dev, fid, dev->dd_lu_dev.ld_site->ls_top_dev); |
| } |
| |
| |
| int local_oid_storage_init(const struct lu_env *env, struct dt_device *dev, |
| const struct lu_fid *first_fid, |
| struct local_oid_storage **los); |
| void local_oid_storage_fini(const struct lu_env *env, |
| struct local_oid_storage *los); |
| int local_object_fid_generate(const struct lu_env *env, |
| struct local_oid_storage *los, |
| struct lu_fid *fid); |
| int local_object_declare_create(const struct lu_env *env, |
| struct local_oid_storage *los, |
| struct dt_object *o, |
| struct lu_attr *attr, |
| struct dt_object_format *dof, |
| struct thandle *th); |
| int local_object_create(const struct lu_env *env, |
| struct local_oid_storage *los, |
| struct dt_object *o, |
| struct lu_attr *attr, struct dt_object_format *dof, |
| struct thandle *th); |
| struct dt_object *local_file_find_or_create(const struct lu_env *env, |
| struct local_oid_storage *los, |
| struct dt_object *parent, |
| const char *name, __u32 mode); |
| struct dt_object *local_file_find_or_create_with_fid(const struct lu_env *env, |
| struct dt_device *dt, |
| const struct lu_fid *fid, |
| struct dt_object *parent, |
| const char *name, |
| __u32 mode); |
| struct dt_object * |
| local_index_find_or_create(const struct lu_env *env, |
| struct local_oid_storage *los, |
| struct dt_object *parent, |
| const char *name, __u32 mode, |
| const struct dt_index_features *ft); |
| struct dt_object * |
| local_index_find_or_create_with_fid(const struct lu_env *env, |
| struct dt_device *dt, |
| const struct lu_fid *fid, |
| struct dt_object *parent, |
| const char *name, __u32 mode, |
| const struct dt_index_features *ft); |
| int local_object_unlink(const struct lu_env *env, struct dt_device *dt, |
| struct dt_object *parent, const char *name); |
| |
| static inline int dt_object_lock(const struct lu_env *env, |
| struct dt_object *o, struct lustre_handle *lh, |
| struct ldlm_enqueue_info *einfo, |
| void *policy) |
| { |
| LASSERT(o); |
| LASSERT(o->do_ops); |
| LASSERT(o->do_ops->do_object_lock); |
| return o->do_ops->do_object_lock(env, o, lh, einfo, policy); |
| } |
| |
| int dt_lookup_dir(const struct lu_env *env, struct dt_object *dir, |
| const char *name, struct lu_fid *fid); |
| |
| static inline int dt_object_sync(const struct lu_env *env, |
| struct dt_object *o) |
| { |
| LASSERT(o); |
| LASSERT(o->do_ops); |
| LASSERT(o->do_ops->do_object_sync); |
| return o->do_ops->do_object_sync(env, o); |
| } |
| |
| int dt_declare_version_set(const struct lu_env *env, struct dt_object *o, |
| struct thandle *th); |
| void dt_version_set(const struct lu_env *env, struct dt_object *o, |
| dt_obj_version_t version, struct thandle *th); |
| dt_obj_version_t dt_version_get(const struct lu_env *env, struct dt_object *o); |
| |
| |
| int dt_read(const struct lu_env *env, struct dt_object *dt, |
| struct lu_buf *buf, loff_t *pos); |
| int dt_record_read(const struct lu_env *env, struct dt_object *dt, |
| struct lu_buf *buf, loff_t *pos); |
| int dt_record_write(const struct lu_env *env, struct dt_object *dt, |
| const struct lu_buf *buf, loff_t *pos, struct thandle *th); |
| typedef int (*dt_index_page_build_t)(const struct lu_env *env, |
| union lu_page *lp, int nob, |
| const struct dt_it_ops *iops, |
| struct dt_it *it, __u32 attr, void *arg); |
| int dt_index_walk(const struct lu_env *env, struct dt_object *obj, |
| const struct lu_rdpg *rdpg, dt_index_page_build_t filler, |
| void *arg); |
| int dt_index_read(const struct lu_env *env, struct dt_device *dev, |
| struct idx_info *ii, const struct lu_rdpg *rdpg); |
| |
| static inline struct thandle *dt_trans_create(const struct lu_env *env, |
| struct dt_device *d) |
| { |
| LASSERT(d->dd_ops->dt_trans_create); |
| return d->dd_ops->dt_trans_create(env, d); |
| } |
| |
| static inline int dt_trans_start(const struct lu_env *env, |
| struct dt_device *d, struct thandle *th) |
| { |
| LASSERT(d->dd_ops->dt_trans_start); |
| return d->dd_ops->dt_trans_start(env, d, th); |
| } |
| |
| /* for this transaction hooks shouldn't be called */ |
| static inline int dt_trans_start_local(const struct lu_env *env, |
| struct dt_device *d, struct thandle *th) |
| { |
| LASSERT(d->dd_ops->dt_trans_start); |
| th->th_local = 1; |
| return d->dd_ops->dt_trans_start(env, d, th); |
| } |
| |
| static inline int dt_trans_stop(const struct lu_env *env, |
| struct dt_device *d, struct thandle *th) |
| { |
| LASSERT(d->dd_ops->dt_trans_stop); |
| return d->dd_ops->dt_trans_stop(env, th); |
| } |
| |
| static inline int dt_trans_cb_add(struct thandle *th, |
| struct dt_txn_commit_cb *dcb) |
| { |
| LASSERT(th->th_dev->dd_ops->dt_trans_cb_add); |
| dcb->dcb_magic = TRANS_COMMIT_CB_MAGIC; |
| return th->th_dev->dd_ops->dt_trans_cb_add(th, dcb); |
| } |
| /** @} dt */ |
| |
| |
| static inline int dt_declare_record_write(const struct lu_env *env, |
| struct dt_object *dt, |
| int size, loff_t pos, |
| struct thandle *th) |
| { |
| int rc; |
| |
| LASSERTF(dt != NULL, "dt is NULL when we want to write record\n"); |
| LASSERT(th != NULL); |
| LASSERT(dt->do_body_ops); |
| LASSERT(dt->do_body_ops->dbo_declare_write); |
| rc = dt->do_body_ops->dbo_declare_write(env, dt, size, pos, th); |
| return rc; |
| } |
| |
| static inline int dt_declare_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) |
| { |
| LASSERT(dt); |
| LASSERT(dt->do_ops); |
| LASSERT(dt->do_ops->do_declare_create); |
| return dt->do_ops->do_declare_create(env, dt, attr, hint, dof, th); |
| } |
| |
| static inline int dt_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) |
| { |
| LASSERT(dt); |
| LASSERT(dt->do_ops); |
| LASSERT(dt->do_ops->do_create); |
| return dt->do_ops->do_create(env, dt, attr, hint, dof, th); |
| } |
| |
| static inline int dt_declare_destroy(const struct lu_env *env, |
| struct dt_object *dt, |
| struct thandle *th) |
| { |
| LASSERT(dt); |
| LASSERT(dt->do_ops); |
| LASSERT(dt->do_ops->do_declare_destroy); |
| return dt->do_ops->do_declare_destroy(env, dt, th); |
| } |
| |
| static inline int dt_destroy(const struct lu_env *env, |
| struct dt_object *dt, |
| struct thandle *th) |
| { |
| LASSERT(dt); |
| LASSERT(dt->do_ops); |
| LASSERT(dt->do_ops->do_destroy); |
| return dt->do_ops->do_destroy(env, dt, th); |
| } |
| |
| static inline void dt_read_lock(const struct lu_env *env, |
| struct dt_object *dt, |
| unsigned role) |
| { |
| LASSERT(dt); |
| LASSERT(dt->do_ops); |
| LASSERT(dt->do_ops->do_read_lock); |
| dt->do_ops->do_read_lock(env, dt, role); |
| } |
| |
| static inline void dt_write_lock(const struct lu_env *env, |
| struct dt_object *dt, |
| unsigned role) |
| { |
| LASSERT(dt); |
| LASSERT(dt->do_ops); |
| LASSERT(dt->do_ops->do_write_lock); |
| dt->do_ops->do_write_lock(env, dt, role); |
| } |
| |
| static inline void dt_read_unlock(const struct lu_env *env, |
| struct dt_object *dt) |
| { |
| LASSERT(dt); |
| LASSERT(dt->do_ops); |
| LASSERT(dt->do_ops->do_read_unlock); |
| dt->do_ops->do_read_unlock(env, dt); |
| } |
| |
| static inline void dt_write_unlock(const struct lu_env *env, |
| struct dt_object *dt) |
| { |
| LASSERT(dt); |
| LASSERT(dt->do_ops); |
| LASSERT(dt->do_ops->do_write_unlock); |
| dt->do_ops->do_write_unlock(env, dt); |
| } |
| |
| static inline int dt_write_locked(const struct lu_env *env, |
| struct dt_object *dt) |
| { |
| LASSERT(dt); |
| LASSERT(dt->do_ops); |
| LASSERT(dt->do_ops->do_write_locked); |
| return dt->do_ops->do_write_locked(env, dt); |
| } |
| |
| static inline int dt_attr_get(const struct lu_env *env, struct dt_object *dt, |
| struct lu_attr *la, void *arg) |
| { |
| LASSERT(dt); |
| LASSERT(dt->do_ops); |
| LASSERT(dt->do_ops->do_attr_get); |
| return dt->do_ops->do_attr_get(env, dt, la, arg); |
| } |
| |
| static inline int dt_declare_attr_set(const struct lu_env *env, |
| struct dt_object *dt, |
| const struct lu_attr *la, |
| struct thandle *th) |
| { |
| LASSERT(dt); |
| LASSERT(dt->do_ops); |
| LASSERT(dt->do_ops->do_declare_attr_set); |
| return dt->do_ops->do_declare_attr_set(env, dt, la, th); |
| } |
| |
| static inline int dt_attr_set(const struct lu_env *env, struct dt_object *dt, |
| const struct lu_attr *la, struct thandle *th, |
| struct lustre_capa *capa) |
| { |
| LASSERT(dt); |
| LASSERT(dt->do_ops); |
| LASSERT(dt->do_ops->do_attr_set); |
| return dt->do_ops->do_attr_set(env, dt, la, th, capa); |
| } |
| |
| static inline int dt_declare_ref_add(const struct lu_env *env, |
| struct dt_object *dt, struct thandle *th) |
| { |
| LASSERT(dt); |
| LASSERT(dt->do_ops); |
| LASSERT(dt->do_ops->do_declare_ref_add); |
| return dt->do_ops->do_declare_ref_add(env, dt, th); |
| } |
| |
| static inline int dt_ref_add(const struct lu_env *env, |
| struct dt_object *dt, struct thandle *th) |
| { |
| LASSERT(dt); |
| LASSERT(dt->do_ops); |
| LASSERT(dt->do_ops->do_ref_add); |
| return dt->do_ops->do_ref_add(env, dt, th); |
| } |
| |
| static inline int dt_declare_ref_del(const struct lu_env *env, |
| struct dt_object *dt, struct thandle *th) |
| { |
| LASSERT(dt); |
| LASSERT(dt->do_ops); |
| LASSERT(dt->do_ops->do_declare_ref_del); |
| return dt->do_ops->do_declare_ref_del(env, dt, th); |
| } |
| |
| static inline int dt_ref_del(const struct lu_env *env, |
| struct dt_object *dt, struct thandle *th) |
| { |
| LASSERT(dt); |
| LASSERT(dt->do_ops); |
| LASSERT(dt->do_ops->do_ref_del); |
| return dt->do_ops->do_ref_del(env, dt, th); |
| } |
| |
| static inline struct obd_capa *dt_capa_get(const struct lu_env *env, |
| struct dt_object *dt, |
| struct lustre_capa *old, __u64 opc) |
| { |
| LASSERT(dt); |
| LASSERT(dt->do_ops); |
| LASSERT(dt->do_ops->do_ref_del); |
| return dt->do_ops->do_capa_get(env, dt, old, opc); |
| } |
| |
| static inline int dt_bufs_get(const struct lu_env *env, struct dt_object *d, |
| struct niobuf_remote *rnb, |
| struct niobuf_local *lnb, int rw, |
| struct lustre_capa *capa) |
| { |
| LASSERT(d); |
| LASSERT(d->do_body_ops); |
| LASSERT(d->do_body_ops->dbo_bufs_get); |
| return d->do_body_ops->dbo_bufs_get(env, d, rnb->offset, |
| rnb->len, lnb, rw, capa); |
| } |
| |
| static inline int dt_bufs_put(const struct lu_env *env, struct dt_object *d, |
| struct niobuf_local *lnb, int n) |
| { |
| LASSERT(d); |
| LASSERT(d->do_body_ops); |
| LASSERT(d->do_body_ops->dbo_bufs_put); |
| return d->do_body_ops->dbo_bufs_put(env, d, lnb, n); |
| } |
| |
| static inline int dt_write_prep(const struct lu_env *env, struct dt_object *d, |
| struct niobuf_local *lnb, int n) |
| { |
| LASSERT(d); |
| LASSERT(d->do_body_ops); |
| LASSERT(d->do_body_ops->dbo_write_prep); |
| return d->do_body_ops->dbo_write_prep(env, d, lnb, n); |
| } |
| |
| static inline int dt_declare_write_commit(const struct lu_env *env, |
| struct dt_object *d, |
| struct niobuf_local *lnb, |
| int n, struct thandle *th) |
| { |
| LASSERTF(d != NULL, "dt is NULL when we want to declare write\n"); |
| LASSERT(th != NULL); |
| return d->do_body_ops->dbo_declare_write_commit(env, d, lnb, n, th); |
| } |
| |
| |
| static inline int dt_write_commit(const struct lu_env *env, |
| struct dt_object *d, struct niobuf_local *lnb, |
| int n, struct thandle *th) |
| { |
| LASSERT(d); |
| LASSERT(d->do_body_ops); |
| LASSERT(d->do_body_ops->dbo_write_commit); |
| return d->do_body_ops->dbo_write_commit(env, d, lnb, n, th); |
| } |
| |
| static inline int dt_read_prep(const struct lu_env *env, struct dt_object *d, |
| struct niobuf_local *lnb, int n) |
| { |
| LASSERT(d); |
| LASSERT(d->do_body_ops); |
| LASSERT(d->do_body_ops->dbo_read_prep); |
| return d->do_body_ops->dbo_read_prep(env, d, lnb, n); |
| } |
| |
| static inline int dt_declare_punch(const struct lu_env *env, |
| struct dt_object *dt, __u64 start, |
| __u64 end, struct thandle *th) |
| { |
| LASSERT(dt); |
| LASSERT(dt->do_body_ops); |
| LASSERT(dt->do_body_ops->dbo_declare_punch); |
| return dt->do_body_ops->dbo_declare_punch(env, dt, start, end, th); |
| } |
| |
| static inline int dt_punch(const struct lu_env *env, struct dt_object *dt, |
| __u64 start, __u64 end, struct thandle *th, |
| struct lustre_capa *capa) |
| { |
| LASSERT(dt); |
| LASSERT(dt->do_body_ops); |
| LASSERT(dt->do_body_ops->dbo_punch); |
| return dt->do_body_ops->dbo_punch(env, dt, start, end, th, capa); |
| } |
| |
| static inline int dt_fiemap_get(const struct lu_env *env, struct dt_object *d, |
| struct ll_user_fiemap *fm) |
| { |
| LASSERT(d); |
| if (d->do_body_ops == NULL) |
| return -EPROTO; |
| if (d->do_body_ops->dbo_fiemap_get == NULL) |
| return -EOPNOTSUPP; |
| return d->do_body_ops->dbo_fiemap_get(env, d, fm); |
| } |
| |
| static inline int dt_statfs(const struct lu_env *env, struct dt_device *dev, |
| struct obd_statfs *osfs) |
| { |
| LASSERT(dev); |
| LASSERT(dev->dd_ops); |
| LASSERT(dev->dd_ops->dt_statfs); |
| return dev->dd_ops->dt_statfs(env, dev, osfs); |
| } |
| |
| static inline int dt_root_get(const struct lu_env *env, struct dt_device *dev, |
| struct lu_fid *f) |
| { |
| LASSERT(dev); |
| LASSERT(dev->dd_ops); |
| LASSERT(dev->dd_ops->dt_root_get); |
| return dev->dd_ops->dt_root_get(env, dev, f); |
| } |
| |
| static inline void dt_conf_get(const struct lu_env *env, |
| const struct dt_device *dev, |
| struct dt_device_param *param) |
| { |
| LASSERT(dev); |
| LASSERT(dev->dd_ops); |
| LASSERT(dev->dd_ops->dt_conf_get); |
| return dev->dd_ops->dt_conf_get(env, dev, param); |
| } |
| |
| static inline int dt_sync(const struct lu_env *env, struct dt_device *dev) |
| { |
| LASSERT(dev); |
| LASSERT(dev->dd_ops); |
| LASSERT(dev->dd_ops->dt_sync); |
| return dev->dd_ops->dt_sync(env, dev); |
| } |
| |
| static inline int dt_ro(const struct lu_env *env, struct dt_device *dev) |
| { |
| LASSERT(dev); |
| LASSERT(dev->dd_ops); |
| LASSERT(dev->dd_ops->dt_ro); |
| return dev->dd_ops->dt_ro(env, dev); |
| } |
| |
| static inline int dt_declare_insert(const struct lu_env *env, |
| struct dt_object *dt, |
| const struct dt_rec *rec, |
| const struct dt_key *key, |
| struct thandle *th) |
| { |
| LASSERT(dt); |
| LASSERT(dt->do_index_ops); |
| LASSERT(dt->do_index_ops->dio_declare_insert); |
| return dt->do_index_ops->dio_declare_insert(env, dt, rec, key, th); |
| } |
| |
| static inline int dt_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 noquota) |
| { |
| LASSERT(dt); |
| LASSERT(dt->do_index_ops); |
| LASSERT(dt->do_index_ops->dio_insert); |
| return dt->do_index_ops->dio_insert(env, dt, rec, key, th, |
| capa, noquota); |
| } |
| |
| static inline int dt_declare_xattr_del(const struct lu_env *env, |
| struct dt_object *dt, |
| const char *name, |
| struct thandle *th) |
| { |
| LASSERT(dt); |
| LASSERT(dt->do_ops); |
| LASSERT(dt->do_ops->do_declare_xattr_del); |
| return dt->do_ops->do_declare_xattr_del(env, dt, name, th); |
| } |
| |
| static inline int dt_xattr_del(const struct lu_env *env, |
| struct dt_object *dt, const char *name, |
| struct thandle *th, |
| struct lustre_capa *capa) |
| { |
| LASSERT(dt); |
| LASSERT(dt->do_ops); |
| LASSERT(dt->do_ops->do_xattr_del); |
| return dt->do_ops->do_xattr_del(env, dt, name, th, capa); |
| } |
| |
| static inline int dt_declare_xattr_set(const struct lu_env *env, |
| struct dt_object *dt, |
| const struct lu_buf *buf, |
| const char *name, int fl, |
| struct thandle *th) |
| { |
| LASSERT(dt); |
| LASSERT(dt->do_ops); |
| LASSERT(dt->do_ops->do_declare_xattr_set); |
| return dt->do_ops->do_declare_xattr_set(env, dt, buf, name, fl, th); |
| } |
| |
| static inline int dt_xattr_set(const struct lu_env *env, |
| struct dt_object *dt, const struct lu_buf *buf, |
| const char *name, int fl, struct thandle *th, |
| struct lustre_capa *capa) |
| { |
| LASSERT(dt); |
| LASSERT(dt->do_ops); |
| LASSERT(dt->do_ops->do_xattr_set); |
| return dt->do_ops->do_xattr_set(env, dt, buf, name, fl, th, capa); |
| } |
| |
| static inline int dt_xattr_get(const struct lu_env *env, |
| struct dt_object *dt, struct lu_buf *buf, |
| const char *name, struct lustre_capa *capa) |
| { |
| LASSERT(dt); |
| LASSERT(dt->do_ops); |
| LASSERT(dt->do_ops->do_xattr_get); |
| return dt->do_ops->do_xattr_get(env, dt, buf, name, capa); |
| } |
| |
| static inline int dt_xattr_list(const struct lu_env *env, |
| struct dt_object *dt, struct lu_buf *buf, |
| struct lustre_capa *capa) |
| { |
| LASSERT(dt); |
| LASSERT(dt->do_ops); |
| LASSERT(dt->do_ops->do_xattr_list); |
| return dt->do_ops->do_xattr_list(env, dt, buf, capa); |
| } |
| |
| static inline int dt_declare_delete(const struct lu_env *env, |
| struct dt_object *dt, |
| const struct dt_key *key, |
| struct thandle *th) |
| { |
| LASSERT(dt); |
| LASSERT(dt->do_index_ops); |
| LASSERT(dt->do_index_ops->dio_declare_delete); |
| return dt->do_index_ops->dio_declare_delete(env, dt, key, th); |
| } |
| |
| static inline int dt_delete(const struct lu_env *env, |
| struct dt_object *dt, |
| const struct dt_key *key, |
| struct thandle *th, |
| struct lustre_capa *capa) |
| { |
| LASSERT(dt); |
| LASSERT(dt->do_index_ops); |
| LASSERT(dt->do_index_ops->dio_delete); |
| return dt->do_index_ops->dio_delete(env, dt, key, th, capa); |
| } |
| |
| static inline int dt_commit_async(const struct lu_env *env, |
| struct dt_device *dev) |
| { |
| LASSERT(dev); |
| LASSERT(dev->dd_ops); |
| LASSERT(dev->dd_ops->dt_commit_async); |
| return dev->dd_ops->dt_commit_async(env, dev); |
| } |
| |
| static inline int dt_init_capa_ctxt(const struct lu_env *env, |
| struct dt_device *dev, |
| int mode, unsigned long timeout, |
| __u32 alg, struct lustre_capa_key *keys) |
| { |
| LASSERT(dev); |
| LASSERT(dev->dd_ops); |
| LASSERT(dev->dd_ops->dt_init_capa_ctxt); |
| return dev->dd_ops->dt_init_capa_ctxt(env, dev, mode, |
| timeout, alg, keys); |
| } |
| |
| static inline int dt_lookup(const struct lu_env *env, |
| struct dt_object *dt, |
| struct dt_rec *rec, |
| const struct dt_key *key, |
| struct lustre_capa *capa) |
| { |
| int ret; |
| |
| LASSERT(dt); |
| LASSERT(dt->do_index_ops); |
| LASSERT(dt->do_index_ops->dio_lookup); |
| |
| ret = dt->do_index_ops->dio_lookup(env, dt, rec, key, capa); |
| if (ret > 0) |
| ret = 0; |
| else if (ret == 0) |
| ret = -ENOENT; |
| return ret; |
| } |
| |
| #define LU221_BAD_TIME (0x80000000U + 24 * 3600) |
| |
| struct dt_find_hint { |
| struct lu_fid *dfh_fid; |
| struct dt_device *dfh_dt; |
| struct dt_object *dfh_o; |
| }; |
| |
| struct dt_thread_info { |
| char dti_buf[DT_MAX_PATH]; |
| struct dt_find_hint dti_dfh; |
| struct lu_attr dti_attr; |
| struct lu_fid dti_fid; |
| struct dt_object_format dti_dof; |
| struct lustre_mdt_attrs dti_lma; |
| struct lu_buf dti_lb; |
| loff_t dti_off; |
| }; |
| |
| extern struct lu_context_key dt_key; |
| |
| static inline struct dt_thread_info *dt_info(const struct lu_env *env) |
| { |
| struct dt_thread_info *dti; |
| |
| dti = lu_context_key_get(&env->le_ctx, &dt_key); |
| LASSERT(dti); |
| return dti; |
| } |
| |
| int dt_global_init(void); |
| void dt_global_fini(void); |
| |
| # ifdef LPROCFS |
| int lprocfs_dt_rd_blksize(char *page, char **start, off_t off, |
| int count, int *eof, void *data); |
| int lprocfs_dt_rd_kbytestotal(char *page, char **start, off_t off, |
| int count, int *eof, void *data); |
| int lprocfs_dt_rd_kbytesfree(char *page, char **start, off_t off, |
| int count, int *eof, void *data); |
| int lprocfs_dt_rd_kbytesavail(char *page, char **start, off_t off, |
| int count, int *eof, void *data); |
| int lprocfs_dt_rd_filestotal(char *page, char **start, off_t off, |
| int count, int *eof, void *data); |
| int lprocfs_dt_rd_filesfree(char *page, char **start, off_t off, |
| int count, int *eof, void *data); |
| # endif /* LPROCFS */ |
| |
| #endif /* __LUSTRE_DT_OBJECT_H */ |