-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* GPL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*/
/*
* Author: Mike Pershin <tappro@clusterfs.com>
*/
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
-
#define DEBUG_SUBSYSTEM S_MDS
#include <obd_support.h>
#include <lustre_lib.h>
static const struct lu_object_operations mdc_obj_ops;
extern struct lu_context_key mdc_thread_key;
-
+/**
+ * \addtogroup cmm_mdc
+ * @{
+ */
+/**
+ * Allocate new mdc object.
+ */
struct lu_object *mdc_object_alloc(const struct lu_env *env,
const struct lu_object_header *hdr,
struct lu_device *ld)
{
- struct mdc_object *mco;
+ struct mdc_object *mco;
ENTRY;
- OBD_ALLOC_PTR(mco);
- if (mco != NULL) {
- struct lu_object *lo;
+ OBD_ALLOC_PTR(mco);
+ if (mco != NULL) {
+ struct lu_object *lo;
- lo = &mco->mco_obj.mo_lu;
+ lo = &mco->mco_obj.mo_lu;
lu_object_init(lo, NULL, ld);
mco->mco_obj.mo_ops = &mdc_mo_ops;
mco->mco_obj.mo_dir_ops = &mdc_dir_ops;
lo->lo_ops = &mdc_obj_ops;
RETURN(lo);
- } else
- RETURN(NULL);
+ } else
+ RETURN(NULL);
}
+/** Free current mdc object */
static void mdc_object_free(const struct lu_env *env, struct lu_object *lo)
{
struct mdc_object *mco = lu2mdc_obj(lo);
- lu_object_fini(lo);
+ lu_object_fini(lo);
OBD_FREE_PTR(mco);
}
+/**
+ * Initialize mdc object. All of them have loh_attr::LOHA_REMOTE set.
+ */
static int mdc_object_init(const struct lu_env *env, struct lu_object *lo,
- const struct lu_object_conf *_)
+ const struct lu_object_conf *unused)
{
ENTRY;
lo->lo_header->loh_attr |= LOHA_REMOTE;
RETURN(0);
}
+/**
+ * Instance of lu_object_operations for mdc.
+ */
static const struct lu_object_operations mdc_obj_ops = {
.loo_object_init = mdc_object_init,
.loo_object_free = mdc_object_free,
};
-/* md_object_operations */
+/**
+ * \name The set of md_object_operations.
+ * @{
+ */
+/**
+ * Get mdc_thread_info from lu_context
+ */
static
struct mdc_thread_info *mdc_info_get(const struct lu_env *env)
{
return mci;
}
+/**
+ * Initialize mdc_thread_info.
+ */
static
struct mdc_thread_info *mdc_info_init(const struct lu_env *env)
{
return mci;
}
+/**
+ * Convert attributes from mdt_body to the md_attr.
+ */
static void mdc_body2attr(struct mdt_body *body, struct md_attr *ma)
{
struct lu_attr *la = &ma->ma_attr;
ma->ma_valid = MA_INODE;
}
+/**
+ * Fill the md_attr \a ma with attributes from request.
+ */
static int mdc_req2attr_update(const struct lu_env *env,
struct md_attr *ma)
{
LASSERT(ma->ma_capa != NULL);
*ma->ma_capa = *capa;
}
-
+
if ((body->valid & OBD_MD_FLEASIZE) || (body->valid & OBD_MD_FLDIREA)) {
if (body->eadatasize == 0) {
CERROR("No size defined for easize field\n");
RETURN(-EPROTO);
LASSERT(ma->ma_lmm != NULL);
- LASSERT(ma->ma_lmm_size >= body->eadatasize);
+ LASSERT(ma->ma_lmm_size >= body->eadatasize);
ma->ma_lmm_size = body->eadatasize;
memcpy(ma->ma_lmm, md, ma->ma_lmm_size);
ma->ma_valid |= MA_LOV;
RETURN(-EPROTO);
}
- cookie = req_capsule_server_sized_get(&req->rq_pill,
+ cookie = req_capsule_server_sized_get(&req->rq_pill,
&RMF_LOGCOOKIES,
body->aclsize);
if (cookie == NULL)
RETURN(-EPROTO);
}
- acl = req_capsule_server_sized_get(&req->rq_pill,
+ acl = req_capsule_server_sized_get(&req->rq_pill,
&RMF_ACL,
body->aclsize);
if (acl == NULL)
RETURN(0);
}
+/**
+ * The md_object_operations::moo_attr_get() in mdc.
+ */
static int mdc_attr_get(const struct lu_env *env, struct md_object *mo,
struct md_attr *ma)
{
memset(&mci->mci_opdata, 0, sizeof(mci->mci_opdata));
- rc = md_getattr(mc->mc_desc.cl_exp, lu_object_fid(&mo->mo_lu),
- NULL, OBD_MD_FLMODE | OBD_MD_FLUID | OBD_MD_FLGID |
- OBD_MD_FLFLAGS | OBD_MD_FLCROSSREF, 0, &mci->mci_req);
+ memcpy(&mci->mci_opdata.op_fid1, lu_object_fid(&mo->mo_lu),
+ sizeof (struct lu_fid));
+ mci->mci_opdata.op_valid = OBD_MD_FLMODE | OBD_MD_FLUID |
+ OBD_MD_FLGID | OBD_MD_FLFLAGS |
+ OBD_MD_FLCROSSREF;
+
+ rc = md_getattr(mc->mc_desc.cl_exp, &mci->mci_opdata, &mci->mci_req);
if (rc == 0) {
/* get attr from request */
rc = mdc_req2attr_update(env, ma);
RETURN(rc);
}
-static inline struct timespec *mdc_attr_time(struct timespec *t, __u64 seconds)
+/**
+ * Helper to init timspec \a t.
+ */
+static inline struct timespec *mdc_attr_time(struct timespec *t, obd_time seconds)
{
t->tv_sec = seconds;
t->tv_nsec = 0;
return t;
}
-/*
- * XXX: It is only used for set ctime when rename's source on remote MDS.
+/**
+ * The md_object_operations::moo_attr_set() in mdc.
+ *
+ * \note It is only used for set ctime when rename's source on remote MDS.
*/
static int mdc_attr_set(const struct lu_env *env, struct md_object *mo,
const struct md_attr *ma)
RETURN(rc);
}
+/**
+ * The md_object_operations::moo_object_create() in mdc.
+ */
static int mdc_object_create(const struct lu_env *env,
struct md_object *mo,
const struct md_op_spec *spec,
mci = mdc_info_init(env);
mci->mci_opdata.op_bias = MDS_CROSS_REF;
mci->mci_opdata.op_fid2 = *lu_object_fid(&mo->mo_lu);
-
+
/* Parent fid is needed to create dotdot on the remote node. */
mci->mci_opdata.op_fid1 = *(spec->u.sp_pfid);
mci->mci_opdata.op_mod_time = la->la_ctime;
RETURN(rc);
}
+/**
+ * The md_object_operations::moo_ref_add() in mdc.
+ */
static int mdc_ref_add(const struct lu_env *env, struct md_object *mo,
const struct md_attr *ma)
{
RETURN(rc);
}
+/**
+ * The md_object_operations::moo_ref_del() in mdc.
+ */
static int mdc_ref_del(const struct lu_env *env, struct md_object *mo,
struct md_attr *ma)
{
}
#ifdef HAVE_SPLIT_SUPPORT
+/** Send page with directory entries to another MDS. */
int mdc_send_page(struct cmm_device *cm, const struct lu_env *env,
struct md_object *mo, struct page *page, __u32 offset)
{
}
#endif
+/**
+ * Instance of md_object_operations for mdc.
+ */
static const struct md_object_operations mdc_mo_ops = {
.moo_attr_get = mdc_attr_get,
.moo_attr_set = mdc_attr_set,
.moo_ref_add = mdc_ref_add,
.moo_ref_del = mdc_ref_del,
};
+/** @} */
-/* md_dir_operations */
+/**
+ * \name The set of md_dir_operations.
+ * @{
+ */
+/**
+ * The md_dir_operations::mdo_rename_tgt in mdc.
+ */
static int mdc_rename_tgt(const struct lu_env *env, struct md_object *mo_p,
struct md_object *mo_t, const struct lu_fid *lf,
const struct lu_name *lname, struct md_attr *ma)
RETURN(rc);
}
-/*
- * Return resulting fid in sfid
- * 0: fids are not relatives
- * fid: fid at which search stopped
+/**
+ * Check the fids are not relatives.
+ * The md_dir_operations::mdo_is_subdir() in mdc.
+ *
+ * Return resulting fid in sfid.
+ * \retval \a sfid = 0 fids are not relatives
+ * \retval \a sfid = FID at which search stopped
*/
static int mdc_is_subdir(const struct lu_env *env, struct md_object *mo,
const struct lu_fid *fid, struct lu_fid *sfid)
body = req_capsule_server_get(&mci->mci_req->rq_pill,
&RMF_MDT_BODY);
LASSERT(body->valid & OBD_MD_FLID);
-
+
CDEBUG(D_INFO, "Remote mdo_is_subdir(), new src "DFID"\n",
PFID(&body->fid1));
*sfid = body->fid1;
RETURN(rc);
}
+/** Instance of md_dir_operations for mdc. */
static const struct md_dir_operations mdc_dir_ops = {
.mdo_is_subdir = mdc_is_subdir,
.mdo_rename_tgt = mdc_rename_tgt
};
+/** @} */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff