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* 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 "../../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 *env, struct dt_object *obj,
__u64 start, __u64 end);
/**
* 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,
__u64 start, __u64 end)
{
LASSERT(o);
LASSERT(o->do_ops);
LASSERT(o->do_ops->do_object_sync);
return o->do_ops->do_object_sync(env, o, start, end);
}
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);
#if defined (CONFIG_PROC_FS)
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 /* CONFIG_PROC_FS */
#endif /* __LUSTRE_DT_OBJECT_H */
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