diff options
Diffstat (limited to 'drivers/staging/lustre/lustre/include/md_object.h')
| -rw-r--r-- | drivers/staging/lustre/lustre/include/md_object.h | 908 |
1 files changed, 908 insertions, 0 deletions
diff --git a/drivers/staging/lustre/lustre/include/md_object.h b/drivers/staging/lustre/lustre/include/md_object.h new file mode 100644 index 000000000000..92d6420b21da --- /dev/null +++ b/drivers/staging/lustre/lustre/include/md_object.h @@ -0,0 +1,908 @@ +/* + * 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. + * + * lustre/include/md_object.h + * + * Extention of lu_object.h for metadata objects + */ + +#ifndef _LUSTRE_MD_OBJECT_H +#define _LUSTRE_MD_OBJECT_H + +/** \defgroup md md + * Sub-class of lu_object with methods common for "meta-data" objects in MDT + * stack. + * + * Meta-data objects implement namespace operations: you can link, unlink + * them, and treat them as directories. + * + * Examples: mdt, cmm, and mdt are implementations of md interface. + * @{ + */ + + +/* + * super-class definitions. + */ +#include <dt_object.h> + +struct md_device; +struct md_device_operations; +struct md_object; +struct obd_export; + +enum { + UCRED_INVALID = -1, + UCRED_INIT = 0, + UCRED_OLD = 1, + UCRED_NEW = 2 +}; + +enum { + MD_CAPAINFO_MAX = 5 +}; + +/** there are at most 5 fids in one operation, see rename, NOTE the last one + * is a temporary one used for is_subdir() */ +struct md_capainfo { + __u32 mc_auth; + __u32 mc_padding; + struct lu_fid mc_fid[MD_CAPAINFO_MAX]; + struct lustre_capa *mc_capa[MD_CAPAINFO_MAX]; +}; + +struct md_quota { + struct obd_export *mq_exp; +}; + +/** + * Implemented in mdd/mdd_handler.c. + * + * XXX should be moved into separate .h/.c together with all md security + * related definitions. + */ +struct md_capainfo *md_capainfo(const struct lu_env *env); +struct md_quota *md_quota(const struct lu_env *env); + +/** metadata attributes */ +enum ma_valid { + MA_INODE = (1 << 0), + MA_LOV = (1 << 1), + MA_COOKIE = (1 << 2), + MA_FLAGS = (1 << 3), + MA_LMV = (1 << 4), + MA_ACL_DEF = (1 << 5), + MA_LOV_DEF = (1 << 6), + MA_LAY_GEN = (1 << 7), + MA_HSM = (1 << 8), + MA_SOM = (1 << 9), + MA_PFID = (1 << 10) +}; + +typedef enum { + MDL_MINMODE = 0, + MDL_EX = 1, + MDL_PW = 2, + MDL_PR = 4, + MDL_CW = 8, + MDL_CR = 16, + MDL_NL = 32, + MDL_GROUP = 64, + MDL_MAXMODE +} mdl_mode_t; + +typedef enum { + MDT_NUL_LOCK = 0, + MDT_REG_LOCK = (1 << 0), + MDT_PDO_LOCK = (1 << 1) +} mdl_type_t; + +/* memory structure for hsm attributes + * for fields description see the on disk structure hsm_attrs + * which is defined in lustre_idl.h + */ +struct md_hsm { + __u32 mh_compat; + __u32 mh_flags; + __u64 mh_arch_id; + __u64 mh_arch_ver; +}; + +#define IOEPOCH_INVAL 0 + +/* memory structure for som attributes + * for fields description see the on disk structure som_attrs + * which is defined in lustre_idl.h + */ +struct md_som_data { + __u32 msd_compat; + __u32 msd_incompat; + __u64 msd_ioepoch; + __u64 msd_size; + __u64 msd_blocks; + __u64 msd_mountid; +}; + +struct md_attr { + __u64 ma_valid; + __u64 ma_need; + __u64 ma_attr_flags; + struct lu_attr ma_attr; + struct lu_fid ma_pfid; + struct md_hsm ma_hsm; + struct lov_mds_md *ma_lmm; + struct lmv_stripe_md *ma_lmv; + void *ma_acl; + struct llog_cookie *ma_cookie; + struct lustre_capa *ma_capa; + struct md_som_data *ma_som; + int ma_lmm_size; + int ma_lmv_size; + int ma_acl_size; + int ma_cookie_size; + __u16 ma_layout_gen; +}; + +/** Additional parameters for create */ +struct md_op_spec { + union { + /** symlink target */ + const char *sp_symname; + /** parent FID for cross-ref mkdir */ + const struct lu_fid *sp_pfid; + /** eadata for regular files */ + struct md_spec_reg { + /** lov objs exist already */ + const struct lu_fid *fid; + const void *eadata; + int eadatalen; + } sp_ea; + } u; + + /** Create flag from client: such as MDS_OPEN_CREAT, and others. */ + __u64 sp_cr_flags; + + /** don't create lov objects or llog cookie - this replay */ + unsigned int no_create:1, + sp_cr_lookup:1, /* do lookup sanity check or not. */ + sp_rm_entry:1; /* only remove name entry */ + + /** Current lock mode for parent dir where create is performing. */ + mdl_mode_t sp_cr_mode; + + /** to create directory */ + const struct dt_index_features *sp_feat; +}; + +/** + * Operations implemented for each md object (both directory and leaf). + */ +struct md_object_operations { + int (*moo_permission)(const struct lu_env *env, + struct md_object *pobj, struct md_object *cobj, + struct md_attr *attr, int mask); + + int (*moo_attr_get)(const struct lu_env *env, struct md_object *obj, + struct md_attr *attr); + + int (*moo_attr_set)(const struct lu_env *env, struct md_object *obj, + const struct md_attr *attr); + + int (*moo_xattr_get)(const struct lu_env *env, struct md_object *obj, + struct lu_buf *buf, const char *name); + + int (*moo_xattr_list)(const struct lu_env *env, struct md_object *obj, + struct lu_buf *buf); + + int (*moo_xattr_set)(const struct lu_env *env, struct md_object *obj, + const struct lu_buf *buf, const char *name, + int fl); + + int (*moo_xattr_del)(const struct lu_env *env, struct md_object *obj, + const char *name); + + /** This method is used to swap the layouts between 2 objects */ + int (*moo_swap_layouts)(const struct lu_env *env, + struct md_object *obj1, struct md_object *obj2, + __u64 flags); + + /** \retval number of bytes actually read upon success */ + int (*moo_readpage)(const struct lu_env *env, struct md_object *obj, + const struct lu_rdpg *rdpg); + + int (*moo_readlink)(const struct lu_env *env, struct md_object *obj, + struct lu_buf *buf); + int (*moo_changelog)(const struct lu_env *env, + enum changelog_rec_type type, int flags, + struct md_object *obj); + /** part of cross-ref operation */ + int (*moo_object_create)(const struct lu_env *env, + struct md_object *obj, + const struct md_op_spec *spec, + struct md_attr *ma); + + int (*moo_ref_add)(const struct lu_env *env, + struct md_object *obj, + const struct md_attr *ma); + + int (*moo_ref_del)(const struct lu_env *env, + struct md_object *obj, + struct md_attr *ma); + + int (*moo_open)(const struct lu_env *env, + struct md_object *obj, int flag); + + int (*moo_close)(const struct lu_env *env, struct md_object *obj, + struct md_attr *ma, int mode); + + int (*moo_capa_get)(const struct lu_env *, struct md_object *, + struct lustre_capa *, int renewal); + + int (*moo_object_sync)(const struct lu_env *, struct md_object *); + + int (*moo_file_lock)(const struct lu_env *env, struct md_object *obj, + struct lov_mds_md *lmm, struct ldlm_extent *extent, + struct lustre_handle *lockh); + int (*moo_file_unlock)(const struct lu_env *env, struct md_object *obj, + struct lov_mds_md *lmm, + struct lustre_handle *lockh); + int (*moo_object_lock)(const struct lu_env *env, struct md_object *obj, + struct lustre_handle *lh, + struct ldlm_enqueue_info *einfo, + void *policy); +}; + +/** + * Operations implemented for each directory object. + */ +struct md_dir_operations { + int (*mdo_is_subdir) (const struct lu_env *env, struct md_object *obj, + const struct lu_fid *fid, struct lu_fid *sfid); + + int (*mdo_lookup)(const struct lu_env *env, struct md_object *obj, + const struct lu_name *lname, struct lu_fid *fid, + struct md_op_spec *spec); + + mdl_mode_t (*mdo_lock_mode)(const struct lu_env *env, + struct md_object *obj, + mdl_mode_t mode); + + int (*mdo_create)(const struct lu_env *env, struct md_object *pobj, + const struct lu_name *lname, struct md_object *child, + struct md_op_spec *spec, + struct md_attr *ma); + + /** This method is used for creating data object for this meta object*/ + int (*mdo_create_data)(const struct lu_env *env, struct md_object *p, + struct md_object *o, + const struct md_op_spec *spec, + struct md_attr *ma); + + int (*mdo_rename)(const struct lu_env *env, struct md_object *spobj, + struct md_object *tpobj, const struct lu_fid *lf, + const struct lu_name *lsname, struct md_object *tobj, + const struct lu_name *ltname, struct md_attr *ma); + + int (*mdo_link)(const struct lu_env *env, struct md_object *tgt_obj, + struct md_object *src_obj, const struct lu_name *lname, + struct md_attr *ma); + + int (*mdo_unlink)(const struct lu_env *env, struct md_object *pobj, + struct md_object *cobj, const struct lu_name *lname, + struct md_attr *ma, int no_name); + + /** This method is used to compare a requested layout to an existing + * layout (struct lov_mds_md_v1/3 vs struct lov_mds_md_v1/3) */ + int (*mdo_lum_lmm_cmp)(const struct lu_env *env, + struct md_object *cobj, + const struct md_op_spec *spec, + struct md_attr *ma); + + /** partial ops for cross-ref case */ + int (*mdo_name_insert)(const struct lu_env *env, + struct md_object *obj, + const struct lu_name *lname, + const struct lu_fid *fid, + const struct md_attr *ma); + + int (*mdo_name_remove)(const struct lu_env *env, + struct md_object *obj, + const struct lu_name *lname, + const struct md_attr *ma); + + int (*mdo_rename_tgt)(const struct lu_env *env, struct md_object *pobj, + struct md_object *tobj, const struct lu_fid *fid, + const struct lu_name *lname, struct md_attr *ma); +}; + +struct md_device_operations { + /** meta-data device related handlers. */ + int (*mdo_root_get)(const struct lu_env *env, struct md_device *m, + struct lu_fid *f); + + int (*mdo_maxsize_get)(const struct lu_env *env, struct md_device *m, + int *md_size, int *cookie_size); + + int (*mdo_statfs)(const struct lu_env *env, struct md_device *m, + struct obd_statfs *sfs); + + int (*mdo_init_capa_ctxt)(const struct lu_env *env, struct md_device *m, + int mode, unsigned long timeout, __u32 alg, + struct lustre_capa_key *keys); + + int (*mdo_update_capa_key)(const struct lu_env *env, + struct md_device *m, + struct lustre_capa_key *key); + + int (*mdo_llog_ctxt_get)(const struct lu_env *env, + struct md_device *m, int idx, void **h); + + int (*mdo_iocontrol)(const struct lu_env *env, struct md_device *m, + unsigned int cmd, int len, void *data); +}; + +enum md_upcall_event { + /** Sync the md layer*/ + MD_LOV_SYNC = (1 << 0), + /** Just for split, no need trans, for replay */ + MD_NO_TRANS = (1 << 1), + MD_LOV_CONFIG = (1 << 2), + /** Trigger quota recovery */ + MD_LOV_QUOTA = (1 << 3) +}; + +struct md_upcall { + /** this lock protects upcall using against its removal + * read lock is for usage the upcall, write - for init/fini */ + struct rw_semaphore mu_upcall_sem; + /** device to call, upper layer normally */ + struct md_device *mu_upcall_dev; + /** upcall function */ + int (*mu_upcall)(const struct lu_env *env, struct md_device *md, + enum md_upcall_event ev, void *data); +}; + +struct md_device { + struct lu_device md_lu_dev; + const struct md_device_operations *md_ops; + struct md_upcall md_upcall; +}; + +static inline void md_upcall_init(struct md_device *m, void *upcl) +{ + init_rwsem(&m->md_upcall.mu_upcall_sem); + m->md_upcall.mu_upcall_dev = NULL; + m->md_upcall.mu_upcall = upcl; +} + +static inline void md_upcall_dev_set(struct md_device *m, struct md_device *up) +{ + down_write(&m->md_upcall.mu_upcall_sem); + m->md_upcall.mu_upcall_dev = up; + up_write(&m->md_upcall.mu_upcall_sem); +} + +static inline void md_upcall_fini(struct md_device *m) +{ + down_write(&m->md_upcall.mu_upcall_sem); + m->md_upcall.mu_upcall_dev = NULL; + m->md_upcall.mu_upcall = NULL; + up_write(&m->md_upcall.mu_upcall_sem); +} + +static inline int md_do_upcall(const struct lu_env *env, struct md_device *m, + enum md_upcall_event ev, void *data) +{ + int rc = 0; + down_read(&m->md_upcall.mu_upcall_sem); + if (m->md_upcall.mu_upcall_dev != NULL && + m->md_upcall.mu_upcall_dev->md_upcall.mu_upcall != NULL) { + rc = m->md_upcall.mu_upcall_dev->md_upcall.mu_upcall(env, + m->md_upcall.mu_upcall_dev, + ev, data); + } + up_read(&m->md_upcall.mu_upcall_sem); + return rc; +} + +struct md_object { + struct lu_object mo_lu; + const struct md_object_operations *mo_ops; + const struct md_dir_operations *mo_dir_ops; +}; + +/** + * seq-server site. + */ +struct seq_server_site { + struct lu_site *ss_lu; + /** + * mds number of this site. + */ + mdsno_t ss_node_id; + /** + * Fid location database + */ + struct lu_server_fld *ss_server_fld; + struct lu_client_fld *ss_client_fld; + + /** + * Server Seq Manager + */ + struct lu_server_seq *ss_server_seq; + + /** + * Controller Seq Manager + */ + struct lu_server_seq *ss_control_seq; + struct obd_export *ss_control_exp; + + /** + * Client Seq Manager + */ + struct lu_client_seq *ss_client_seq; +}; + +static inline struct md_device *lu2md_dev(const struct lu_device *d) +{ + LASSERT(IS_ERR(d) || lu_device_is_md(d)); + return container_of0(d, struct md_device, md_lu_dev); +} + +static inline struct lu_device *md2lu_dev(struct md_device *d) +{ + return &d->md_lu_dev; +} + +static inline struct md_object *lu2md(const struct lu_object *o) +{ + LASSERT(o == NULL || IS_ERR(o) || lu_device_is_md(o->lo_dev)); + return container_of0(o, struct md_object, mo_lu); +} + +static inline struct md_object *md_object_next(const struct md_object *obj) +{ + return (obj ? lu2md(lu_object_next(&obj->mo_lu)) : NULL); +} + +static inline struct md_device *md_obj2dev(const struct md_object *o) +{ + LASSERT(o == NULL || IS_ERR(o) || lu_device_is_md(o->mo_lu.lo_dev)); + return container_of0(o->mo_lu.lo_dev, struct md_device, md_lu_dev); +} + +static inline struct seq_server_site *lu_site2seq(const struct lu_site *s) +{ + return s->ld_seq_site; +} + +static inline int md_device_init(struct md_device *md, struct lu_device_type *t) +{ + return lu_device_init(&md->md_lu_dev, t); +} + +static inline void md_device_fini(struct md_device *md) +{ + lu_device_fini(&md->md_lu_dev); +} + +static inline struct md_object *md_object_find_slice(const struct lu_env *env, + struct md_device *md, + const struct lu_fid *f) +{ + return lu2md(lu_object_find_slice(env, md2lu_dev(md), f, NULL)); +} + + +/** md operations */ +static inline int mo_permission(const struct lu_env *env, + struct md_object *p, + struct md_object *c, + struct md_attr *at, + int mask) +{ + LASSERT(c->mo_ops->moo_permission); + return c->mo_ops->moo_permission(env, p, c, at, mask); +} + +static inline int mo_attr_get(const struct lu_env *env, + struct md_object *m, + struct md_attr *at) +{ + LASSERT(m->mo_ops->moo_attr_get); + return m->mo_ops->moo_attr_get(env, m, at); +} + +static inline int mo_readlink(const struct lu_env *env, + struct md_object *m, + struct lu_buf *buf) +{ + LASSERT(m->mo_ops->moo_readlink); + return m->mo_ops->moo_readlink(env, m, buf); +} + +static inline int mo_changelog(const struct lu_env *env, + enum changelog_rec_type type, + int flags, struct md_object *m) +{ + LASSERT(m->mo_ops->moo_changelog); + return m->mo_ops->moo_changelog(env, type, flags, m); +} + +static inline int mo_attr_set(const struct lu_env *env, + struct md_object *m, + const struct md_attr *at) +{ + LASSERT(m->mo_ops->moo_attr_set); + return m->mo_ops->moo_attr_set(env, m, at); +} + +static inline int mo_xattr_get(const struct lu_env *env, + struct md_object *m, + struct lu_buf *buf, + const char *name) +{ + LASSERT(m->mo_ops->moo_xattr_get); + return m->mo_ops->moo_xattr_get(env, m, buf, name); +} + +static inline int mo_xattr_del(const struct lu_env *env, + struct md_object *m, + const char *name) +{ + LASSERT(m->mo_ops->moo_xattr_del); + return m->mo_ops->moo_xattr_del(env, m, name); +} + +static inline int mo_xattr_set(const struct lu_env *env, + struct md_object *m, + const struct lu_buf *buf, + const char *name, + int flags) +{ + LASSERT(m->mo_ops->moo_xattr_set); + return m->mo_ops->moo_xattr_set(env, m, buf, name, flags); +} + +static inline int mo_xattr_list(const struct lu_env *env, + struct md_object *m, + struct lu_buf *buf) +{ + LASSERT(m->mo_ops->moo_xattr_list); + return m->mo_ops->moo_xattr_list(env, m, buf); +} + +static inline int mo_swap_layouts(const struct lu_env *env, + struct md_object *o1, + struct md_object *o2, __u64 flags) +{ + LASSERT(o1->mo_ops->moo_swap_layouts); + LASSERT(o2->mo_ops->moo_swap_layouts); + if (o1->mo_ops->moo_swap_layouts != o2->mo_ops->moo_swap_layouts) + return -EPERM; + return o1->mo_ops->moo_swap_layouts(env, o1, o2, flags); +} + +static inline int mo_open(const struct lu_env *env, + struct md_object *m, + int flags) +{ + LASSERT(m->mo_ops->moo_open); + return m->mo_ops->moo_open(env, m, flags); +} + +static inline int mo_close(const struct lu_env *env, + struct md_object *m, + struct md_attr *ma, + int mode) +{ + LASSERT(m->mo_ops->moo_close); + return m->mo_ops->moo_close(env, m, ma, mode); +} + +static inline int mo_readpage(const struct lu_env *env, + struct md_object *m, + const struct lu_rdpg *rdpg) +{ + LASSERT(m->mo_ops->moo_readpage); + return m->mo_ops->moo_readpage(env, m, rdpg); +} + +static inline int mo_object_create(const struct lu_env *env, + struct md_object *m, + const struct md_op_spec *spc, + struct md_attr *at) +{ + LASSERT(m->mo_ops->moo_object_create); + return m->mo_ops->moo_object_create(env, m, spc, at); +} + +static inline int mo_ref_add(const struct lu_env *env, + struct md_object *m, + const struct md_attr *ma) +{ + LASSERT(m->mo_ops->moo_ref_add); + return m->mo_ops->moo_ref_add(env, m, ma); +} + +static inline int mo_ref_del(const struct lu_env *env, + struct md_object *m, + struct md_attr *ma) +{ + LASSERT(m->mo_ops->moo_ref_del); + return m->mo_ops->moo_ref_del(env, m, ma); +} + +static inline int mo_capa_get(const struct lu_env *env, + struct md_object *m, + struct lustre_capa *c, + int renewal) +{ + LASSERT(m->mo_ops->moo_capa_get); + return m->mo_ops->moo_capa_get(env, m, c, renewal); +} + +static inline int mo_object_sync(const struct lu_env *env, struct md_object *m) +{ + LASSERT(m->mo_ops->moo_object_sync); + return m->mo_ops->moo_object_sync(env, m); +} + +static inline int mo_file_lock(const struct lu_env *env, struct md_object *m, + struct lov_mds_md *lmm, + struct ldlm_extent *extent, + struct lustre_handle *lockh) +{ + LASSERT(m->mo_ops->moo_file_lock); + return m->mo_ops->moo_file_lock(env, m, lmm, extent, lockh); +} + +static inline int mo_file_unlock(const struct lu_env *env, struct md_object *m, + struct lov_mds_md *lmm, + struct lustre_handle *lockh) +{ + LASSERT(m->mo_ops->moo_file_unlock); + return m->mo_ops->moo_file_unlock(env, m, lmm, lockh); +} + +static inline int mo_object_lock(const struct lu_env *env, + struct md_object *m, + struct lustre_handle *lh, + struct ldlm_enqueue_info *einfo, + void *policy) +{ + LASSERT(m->mo_ops->moo_object_lock); + return m->mo_ops->moo_object_lock(env, m, lh, einfo, policy); +} + +static inline int mdo_lookup(const struct lu_env *env, + struct md_object *p, + const struct lu_name *lname, + struct lu_fid *f, + struct md_op_spec *spec) +{ + LASSERT(p->mo_dir_ops->mdo_lookup); + return p->mo_dir_ops->mdo_lookup(env, p, lname, f, spec); +} + +static inline mdl_mode_t mdo_lock_mode(const struct lu_env *env, + struct md_object *mo, + mdl_mode_t lm) +{ + if (mo->mo_dir_ops->mdo_lock_mode == NULL) + return MDL_MINMODE; + return mo->mo_dir_ops->mdo_lock_mode(env, mo, lm); +} + +static inline int mdo_create(const struct lu_env *env, + struct md_object *p, + const struct lu_name *lchild_name, + struct md_object *c, + struct md_op_spec *spc, + struct md_attr *at) +{ + LASSERT(p->mo_dir_ops->mdo_create); + return p->mo_dir_ops->mdo_create(env, p, lchild_name, c, spc, at); +} + +static inline int mdo_create_data(const struct lu_env *env, + struct md_object *p, + struct md_object *c, + const struct md_op_spec *spec, + struct md_attr *ma) +{ + LASSERT(c->mo_dir_ops->mdo_create_data); + return c->mo_dir_ops->mdo_create_data(env, p, c, spec, ma); +} + +static inline int mdo_rename(const struct lu_env *env, + struct md_object *sp, + struct md_object *tp, + const struct lu_fid *lf, + const struct lu_name *lsname, + struct md_object *t, + const struct lu_name *ltname, + struct md_attr *ma) +{ + LASSERT(tp->mo_dir_ops->mdo_rename); + return tp->mo_dir_ops->mdo_rename(env, sp, tp, lf, lsname, t, ltname, + ma); +} + +static inline int mdo_is_subdir(const struct lu_env *env, + struct md_object *mo, + const struct lu_fid *fid, + struct lu_fid *sfid) +{ + LASSERT(mo->mo_dir_ops->mdo_is_subdir); + return mo->mo_dir_ops->mdo_is_subdir(env, mo, fid, sfid); +} + +static inline int mdo_link(const struct lu_env *env, + struct md_object *p, + struct md_object *s, + const struct lu_name *lname, + struct md_attr *ma) +{ + LASSERT(s->mo_dir_ops->mdo_link); + return s->mo_dir_ops->mdo_link(env, p, s, lname, ma); +} + +static inline int mdo_unlink(const struct lu_env *env, + struct md_object *p, + struct md_object *c, + const struct lu_name *lname, + struct md_attr *ma, int no_name) +{ + LASSERT(p->mo_dir_ops->mdo_unlink); + return p->mo_dir_ops->mdo_unlink(env, p, c, lname, ma, no_name); +} + +static inline int mdo_lum_lmm_cmp(const struct lu_env *env, + struct md_object *c, + const struct md_op_spec *spec, + struct md_attr *ma) +{ + LASSERT(c->mo_dir_ops->mdo_lum_lmm_cmp); + return c->mo_dir_ops->mdo_lum_lmm_cmp(env, c, spec, ma); +} + +static inline int mdo_name_insert(const struct lu_env *env, + struct md_object *p, + const struct lu_name *lname, + const struct lu_fid *f, + const struct md_attr *ma) +{ + LASSERT(p->mo_dir_ops->mdo_name_insert); + return p->mo_dir_ops->mdo_name_insert(env, p, lname, f, ma); +} + +static inline int mdo_name_remove(const struct lu_env *env, + struct md_object *p, + const struct lu_name *lname, + const struct md_attr *ma) +{ + LASSERT(p->mo_dir_ops->mdo_name_remove); + return p->mo_dir_ops->mdo_name_remove(env, p, lname, ma); +} + +static inline int mdo_rename_tgt(const struct lu_env *env, + struct md_object *p, + struct md_object *t, + const struct lu_fid *lf, + const struct lu_name *lname, + struct md_attr *ma) +{ + if (t) { + LASSERT(t->mo_dir_ops->mdo_rename_tgt); + return t->mo_dir_ops->mdo_rename_tgt(env, p, t, lf, lname, ma); + } else { + LASSERT(p->mo_dir_ops->mdo_rename_tgt); + return p->mo_dir_ops->mdo_rename_tgt(env, p, t, lf, lname, ma); + } +} + +/** + * Used in MDD/OUT layer for object lock rule + **/ +enum mdd_object_role { + MOR_SRC_PARENT, + MOR_SRC_CHILD, + MOR_TGT_PARENT, + MOR_TGT_CHILD, + MOR_TGT_ORPHAN +}; + +struct dt_device; +/** + * Structure to hold object information. This is used to create object + * \pre llod_dir exist + */ +struct lu_local_obj_desc { + const char *llod_dir; + const char *llod_name; + __u32 llod_oid; + int llod_is_index; + const struct dt_index_features *llod_feat; + struct list_head llod_linkage; +}; + +int lustre_buf2som(void *buf, int rc, struct md_som_data *msd); +int lustre_buf2hsm(void *buf, int rc, struct md_hsm *mh); +void lustre_hsm2buf(void *buf, struct md_hsm *mh); + +struct lu_ucred { + __u32 uc_valid; + __u32 uc_o_uid; + __u32 uc_o_gid; + __u32 uc_o_fsuid; + __u32 uc_o_fsgid; + __u32 uc_uid; + __u32 uc_gid; + __u32 uc_fsuid; + __u32 uc_fsgid; + __u32 uc_suppgids[2]; + cfs_cap_t uc_cap; + __u32 uc_umask; + group_info_t *uc_ginfo; + struct md_identity *uc_identity; +}; + +struct lu_ucred *lu_ucred(const struct lu_env *env); + +struct lu_ucred *lu_ucred_check(const struct lu_env *env); + +struct lu_ucred *lu_ucred_assert(const struct lu_env *env); + +int lu_ucred_global_init(void); + +void lu_ucred_global_fini(void); + +#define md_cap_t(x) (x) + +#define MD_CAP_TO_MASK(x) (1 << (x)) + +#define md_cap_raised(c, flag) (md_cap_t(c) & MD_CAP_TO_MASK(flag)) + +/* capable() is copied from linux kernel! */ +static inline int md_capable(struct lu_ucred *uc, cfs_cap_t cap) +{ + if (md_cap_raised(uc->uc_cap, cap)) + return 1; + return 0; +} + +/** @} md */ +#endif /* _LINUX_MD_OBJECT_H */ |