--- /dev/null
+/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
+ * vim:expandtab:shiftwidth=8:tabstop=8:
+ *
+ * lustre/cmm/mdc_object.c
+ * Lustre Cluster Metadata Manager (cmm)
+ *
+ * Copyright (c) 2006 Cluster File Systems, Inc.
+ * Author: Mike Pershin <tappro@clusterfs.com>
+ *
+ * This file is part of the Lustre file system, http://www.lustre.org
+ * Lustre is a trademark of Cluster File Systems, Inc.
+ *
+ * You may have signed or agreed to another license before downloading
+ * this software. If so, you are bound by the terms and conditions
+ * of that agreement, and the following does not apply to you. See the
+ * LICENSE file included with this distribution for more information.
+ *
+ * If you did not agree to a different license, then this copy of Lustre
+ * is open source software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * In either case, Lustre 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
+ * license text for more details.
+ */
+
+#ifndef EXPORT_SYMTAB
+# define EXPORT_SYMTAB
+#endif
+
+#define DEBUG_SUBSYSTEM S_MDS
+#include <obd_support.h>
+#include <lustre_lib.h>
+#include <obd_class.h>
+#include <lustre_mdc.h>
+#include "cmm_internal.h"
+#include "mdc_internal.h"
+
+static struct md_object_operations mdc_mo_ops;
+static struct md_dir_operations mdc_dir_ops;
+static struct lu_object_operations mdc_obj_ops;
+
+extern struct lu_context_key mdc_thread_key;
+
+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;
+ ENTRY;
+
+ OBD_ALLOC_PTR(mco);
+ if (mco != NULL) {
+ struct lu_object *lo;
+
+ 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);
+}
+
+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);
+ OBD_FREE_PTR(mco);
+}
+
+static int mdc_object_init(const struct lu_env *env, struct lu_object *lo)
+{
+ ENTRY;
+ lo->lo_header->loh_attr |= LOHA_REMOTE;
+ RETURN(0);
+}
+
+static int mdc_object_print(const struct lu_env *env, void *cookie,
+ lu_printer_t p, const struct lu_object *lo)
+{
+ return (*p)(env, cookie, LUSTRE_CMM_MDC_NAME"-object@%p", lo);
+}
+
+static struct lu_object_operations mdc_obj_ops = {
+ .loo_object_init = mdc_object_init,
+ .loo_object_free = mdc_object_free,
+ .loo_object_print = mdc_object_print,
+};
+
+/* md_object_operations */
+static
+struct mdc_thread_info *mdc_info_get(const struct lu_env *env)
+{
+ struct mdc_thread_info *mci;
+
+ mci = lu_context_key_get(&env->le_ctx, &mdc_thread_key);
+ LASSERT(mci);
+ return mci;
+}
+
+static
+struct mdc_thread_info *mdc_info_init(const struct lu_env *env)
+{
+ struct mdc_thread_info *mci = mdc_info_get(env);
+ memset(mci, 0, sizeof(*mci));
+ return mci;
+}
+
+static void mdc_body2attr(struct mdt_body *body, struct md_attr *ma)
+{
+ struct lu_attr *la = &ma->ma_attr;
+ /* update time */
+ if (body->valid & OBD_MD_FLCTIME && body->ctime >= la->la_ctime) {
+ la->la_ctime = body->ctime;
+ if (body->valid & OBD_MD_FLMTIME)
+ la->la_mtime = body->mtime;
+ }
+
+ if (body->valid & OBD_MD_FLMODE)
+ la->la_mode = body->mode;
+ if (body->valid & OBD_MD_FLSIZE)
+ la->la_size = body->size;
+ if (body->valid & OBD_MD_FLBLOCKS)
+ la->la_blocks = body->blocks;
+ if (body->valid & OBD_MD_FLUID)
+ la->la_uid = body->uid;
+ if (body->valid & OBD_MD_FLGID)
+ la->la_gid = body->gid;
+ if (body->valid & OBD_MD_FLFLAGS)
+ la->la_flags = body->flags;
+ if (body->valid & OBD_MD_FLNLINK)
+ la->la_nlink = body->nlink;
+ if (body->valid & OBD_MD_FLRDEV)
+ la->la_rdev = body->rdev;
+
+ la->la_valid = body->valid;
+ ma->ma_valid = MA_INODE;
+}
+
+static int mdc_req2attr_update(const struct lu_env *env,
+ struct md_attr *ma)
+{
+ struct mdc_thread_info *mci;
+ struct ptlrpc_request *req;
+ struct mdt_body *body;
+ struct lov_mds_md *lov;
+ struct llog_cookie *cookie;
+
+ ENTRY;
+ mci = mdc_info_get(env);
+ req = mci->mci_req;
+ LASSERT(req);
+ body = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF, sizeof(*body));
+ LASSERT(body);
+ mdc_body2attr(body, ma);
+
+ if (body->valid & OBD_MD_FLMDSCAPA) {
+ struct lustre_capa *capa;
+
+ /* create for cross-ref will fetch mds capa from remote obj */
+ capa = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF + 1,
+ sizeof(*capa));
+ LASSERT(capa != NULL);
+ LASSERT(ma->ma_capa != NULL);
+ *ma->ma_capa = *capa;
+ }
+
+ if (!(body->valid & OBD_MD_FLEASIZE))
+ RETURN(0);
+
+ if (body->eadatasize == 0) {
+ CERROR("OBD_MD_FLEASIZE is set but eadatasize is zero\n");
+ RETURN(-EPROTO);
+ }
+
+ lov = lustre_swab_repbuf(req, REPLY_REC_OFF + 1,
+ body->eadatasize, NULL);
+ if (lov == NULL) {
+ CERROR("Can't unpack MDS EA data\n");
+ RETURN(-EPROTO);
+ }
+
+ LASSERT(ma->ma_lmm != NULL);
+ LASSERT(ma->ma_lmm_size >= body->eadatasize);
+ ma->ma_lmm_size = body->eadatasize;
+ memcpy(ma->ma_lmm, lov, ma->ma_lmm_size);
+ ma->ma_valid |= MA_LOV;
+
+ if (!(body->valid & OBD_MD_FLCOOKIE))
+ RETURN(0);
+
+ if (body->aclsize == 0) {
+ CERROR("OBD_MD_FLCOOKIE is set but cookie size is zero\n");
+ RETURN(-EPROTO);
+ }
+
+ cookie = lustre_msg_buf(req->rq_repmsg,
+ REPLY_REC_OFF + 2, body->aclsize);
+ if (cookie == NULL) {
+ CERROR("Can't unpack unlink cookie data\n");
+ RETURN(-EPROTO);
+ }
+
+ LASSERT(ma->ma_cookie != NULL);
+ LASSERT(ma->ma_cookie_size == body->aclsize);
+ memcpy(ma->ma_cookie, cookie, ma->ma_cookie_size);
+ ma->ma_valid |= MA_COOKIE;
+ RETURN(0);
+}
+
+static int mdc_attr_get(const struct lu_env *env, struct md_object *mo,
+ struct md_attr *ma)
+{
+ struct mdc_device *mc = md2mdc_dev(md_obj2dev(mo));
+ struct mdc_thread_info *mci;
+ int rc;
+ ENTRY;
+
+ mci = lu_context_key_get(&env->le_ctx, &mdc_thread_key);
+ LASSERT(mci);
+
+ 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);
+ if (rc == 0) {
+ /* get attr from request */
+ rc = mdc_req2attr_update(env, ma);
+ }
+
+ ptlrpc_req_finished(mci->mci_req);
+
+ RETURN(rc);
+}
+
+static inline struct timespec *mdc_attr_time(struct timespec *t, __u64 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.
+ */
+static int mdc_attr_set(const struct lu_env *env, struct md_object *mo,
+ const struct md_attr *ma)
+{
+ struct mdc_device *mc = md2mdc_dev(md_obj2dev(mo));
+ const struct lu_attr *la = &ma->ma_attr;
+ struct mdc_thread_info *mci;
+ struct md_ucred *uc = md_ucred(env);
+ int rc;
+ ENTRY;
+
+ LASSERT(ma->ma_attr.la_valid & LA_CTIME);
+
+ mci = lu_context_key_get(&env->le_ctx, &mdc_thread_key);
+ LASSERT(mci);
+
+ memset(&mci->mci_opdata, 0, sizeof(mci->mci_opdata));
+
+ mci->mci_opdata.op_fid1 = *lu_object_fid(&mo->mo_lu);
+ mdc_attr_time(&mci->mci_opdata.op_attr.ia_ctime, la->la_ctime);
+ mci->mci_opdata.op_attr.ia_mode = la->la_mode;
+ mci->mci_opdata.op_attr.ia_valid = ATTR_CTIME_SET;
+ if (uc &&
+ ((uc->mu_valid == UCRED_OLD) || (uc->mu_valid == UCRED_NEW))) {
+ mci->mci_opdata.op_fsuid = uc->mu_fsuid;
+ mci->mci_opdata.op_fsgid = uc->mu_fsgid;
+ mci->mci_opdata.op_cap = uc->mu_cap;
+ if (uc->mu_ginfo || (uc->mu_valid == UCRED_OLD)) {
+ mci->mci_opdata.op_suppgids[0] = uc->mu_suppgids[0];
+ mci->mci_opdata.op_suppgids[1] = uc->mu_suppgids[1];
+ } else {
+ mci->mci_opdata.op_suppgids[0] =
+ mci->mci_opdata.op_suppgids[1] = -1;
+ }
+ } else {
+ mci->mci_opdata.op_fsuid = la->la_uid;
+ mci->mci_opdata.op_fsgid = la->la_gid;
+ mci->mci_opdata.op_cap = current->cap_effective;
+ mci->mci_opdata.op_suppgids[0] =
+ mci->mci_opdata.op_suppgids[1] = -1;
+ }
+
+ rc = md_setattr(mc->mc_desc.cl_exp, &mci->mci_opdata,
+ NULL, 0, NULL, 0, &mci->mci_req);
+
+ ptlrpc_req_finished(mci->mci_req);
+
+ RETURN(rc);
+}
+
+static int mdc_object_create(const struct lu_env *env,
+ struct md_object *mo,
+ const struct md_op_spec *spec,
+ struct md_attr *ma)
+{
+ struct mdc_device *mc = md2mdc_dev(md_obj2dev(mo));
+ struct lu_attr *la = &ma->ma_attr;
+ struct mdc_thread_info *mci;
+ const void *symname;
+ struct md_ucred *uc = md_ucred(env);
+ int rc, symlen;
+ uid_t uid;
+ gid_t gid;
+ __u32 cap;
+ ENTRY;
+
+ LASSERT(S_ISDIR(la->la_mode));
+ LASSERT(spec->u.sp_pfid != NULL);
+
+ 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;
+ if (uc &&
+ ((uc->mu_valid == UCRED_OLD) || (uc->mu_valid == UCRED_NEW))) {
+ uid = uc->mu_fsuid;
+ if (la->la_mode & S_ISGID)
+ gid = la->la_gid;
+ else
+ gid = uc->mu_fsgid;
+ cap = uc->mu_cap;
+ if (uc->mu_ginfo || (uc->mu_valid == UCRED_OLD))
+ mci->mci_opdata.op_suppgids[0] = uc->mu_suppgids[0];
+ else
+ mci->mci_opdata.op_suppgids[0] = -1;
+ } else {
+ uid = la->la_uid;
+ gid = la->la_gid;
+ cap = 0;
+ mci->mci_opdata.op_suppgids[0] = -1;
+ }
+
+ /* get data from spec */
+ if (spec->sp_cr_flags & MDS_CREATE_SLAVE_OBJ) {
+ symname = spec->u.sp_ea.eadata;
+ symlen = spec->u.sp_ea.eadatalen;
+ mci->mci_opdata.op_fid1 = *(spec->u.sp_ea.fid);
+ mci->mci_opdata.op_flags |= MDS_CREATE_SLAVE_OBJ;
+#ifdef CONFIG_FS_POSIX_ACL
+ } else if (spec->sp_cr_flags & MDS_CREATE_RMT_ACL) {
+ symname = spec->u.sp_ea.eadata;
+ symlen = spec->u.sp_ea.eadatalen;
+ mci->mci_opdata.op_fid1 = *(spec->u.sp_ea.fid);
+ mci->mci_opdata.op_flags |= MDS_CREATE_RMT_ACL;
+#endif
+ } else {
+ symname = spec->u.sp_symname;
+ symlen = symname ? strlen(symname) + 1 : 0;
+ }
+
+ rc = md_create(mc->mc_desc.cl_exp, &mci->mci_opdata,
+ symname, symlen, la->la_mode, uid, gid,
+ cap, la->la_rdev, &mci->mci_req);
+
+ if (rc == 0) {
+ /* get attr from request */
+ rc = mdc_req2attr_update(env, ma);
+ }
+
+ ptlrpc_req_finished(mci->mci_req);
+
+ RETURN(rc);
+}
+
+static int mdc_ref_add(const struct lu_env *env, struct md_object *mo,
+ const struct md_attr *ma)
+{
+ struct mdc_device *mc = md2mdc_dev(md_obj2dev(mo));
+ const struct lu_attr *la = &ma->ma_attr;
+ struct mdc_thread_info *mci;
+ struct md_ucred *uc = md_ucred(env);
+ int rc;
+ ENTRY;
+
+ mci = lu_context_key_get(&env->le_ctx, &mdc_thread_key);
+ LASSERT(mci);
+
+ memset(&mci->mci_opdata, 0, sizeof(mci->mci_opdata));
+ mci->mci_opdata.op_bias = MDS_CROSS_REF;
+ mci->mci_opdata.op_fid1 = *lu_object_fid(&mo->mo_lu);
+ mci->mci_opdata.op_mod_time = la->la_ctime;
+ if (uc &&
+ ((uc->mu_valid == UCRED_OLD) || (uc->mu_valid == UCRED_NEW))) {
+ mci->mci_opdata.op_fsuid = uc->mu_fsuid;
+ mci->mci_opdata.op_fsgid = uc->mu_fsgid;
+ mci->mci_opdata.op_cap = uc->mu_cap;
+ if (uc->mu_ginfo || (uc->mu_valid == UCRED_OLD)) {
+ mci->mci_opdata.op_suppgids[0] = uc->mu_suppgids[0];
+ mci->mci_opdata.op_suppgids[1] = uc->mu_suppgids[1];
+ } else {
+ mci->mci_opdata.op_suppgids[0] =
+ mci->mci_opdata.op_suppgids[1] = -1;
+ }
+ } else {
+ mci->mci_opdata.op_fsuid = la->la_uid;
+ mci->mci_opdata.op_fsgid = la->la_gid;
+ mci->mci_opdata.op_cap = current->cap_effective;
+ mci->mci_opdata.op_suppgids[0] =
+ mci->mci_opdata.op_suppgids[1] = -1;
+ }
+
+
+ rc = md_link(mc->mc_desc.cl_exp, &mci->mci_opdata, &mci->mci_req);
+
+ ptlrpc_req_finished(mci->mci_req);
+
+ RETURN(rc);
+}
+
+static int mdc_ref_del(const struct lu_env *env, struct md_object *mo,
+ struct md_attr *ma)
+{
+ struct mdc_device *mc = md2mdc_dev(md_obj2dev(mo));
+ struct lu_attr *la = &ma->ma_attr;
+ struct mdc_thread_info *mci;
+ struct md_ucred *uc = md_ucred(env);
+ int rc;
+ ENTRY;
+
+ mci = mdc_info_init(env);
+ mci->mci_opdata.op_bias = MDS_CROSS_REF;
+ if (ma->ma_attr_flags & MDS_VTX_BYPASS)
+ mci->mci_opdata.op_bias |= MDS_VTX_BYPASS;
+ else
+ mci->mci_opdata.op_bias &= ~MDS_VTX_BYPASS;
+ mci->mci_opdata.op_fid1 = *lu_object_fid(&mo->mo_lu);
+ mci->mci_opdata.op_mode = la->la_mode;
+ mci->mci_opdata.op_mod_time = la->la_ctime;
+ if (uc &&
+ ((uc->mu_valid == UCRED_OLD) || (uc->mu_valid == UCRED_NEW))) {
+ mci->mci_opdata.op_fsuid = uc->mu_fsuid;
+ mci->mci_opdata.op_fsgid = uc->mu_fsgid;
+ mci->mci_opdata.op_cap = uc->mu_cap;
+ if (uc->mu_ginfo || (uc->mu_valid == UCRED_OLD))
+ mci->mci_opdata.op_suppgids[0] = uc->mu_suppgids[0];
+ else
+ mci->mci_opdata.op_suppgids[0] = -1;
+ } else {
+ mci->mci_opdata.op_fsuid = la->la_uid;
+ mci->mci_opdata.op_fsgid = la->la_gid;
+ mci->mci_opdata.op_cap = current->cap_effective;
+ mci->mci_opdata.op_suppgids[0] = -1;
+ }
+
+ rc = md_unlink(mc->mc_desc.cl_exp, &mci->mci_opdata, &mci->mci_req);
+ if (rc == 0) {
+ /* get attr from request */
+ rc = mdc_req2attr_update(env, ma);
+ }
+
+ ptlrpc_req_finished(mci->mci_req);
+
+ RETURN(rc);
+}
+
+#ifdef HAVE_SPLIT_SUPPORT
+int mdc_send_page(struct cmm_device *cm, const struct lu_env *env,
+ struct md_object *mo, struct page *page, __u32 offset)
+{
+ struct mdc_device *mc = md2mdc_dev(md_obj2dev(mo));
+ int rc;
+ ENTRY;
+
+ rc = mdc_sendpage(mc->mc_desc.cl_exp, lu_object_fid(&mo->mo_lu),
+ page, offset);
+ CDEBUG(rc ? D_ERROR : D_INFO, "send page %p offset %d fid "DFID
+ " rc %d \n", page, offset, PFID(lu_object_fid(&mo->mo_lu)), rc);
+ RETURN(rc);
+}
+#endif
+
+static struct md_object_operations mdc_mo_ops = {
+ .moo_attr_get = mdc_attr_get,
+ .moo_attr_set = mdc_attr_set,
+ .moo_object_create = mdc_object_create,
+ .moo_ref_add = mdc_ref_add,
+ .moo_ref_del = mdc_ref_del,
+};
+
+/* md_dir_operations */
+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)
+{
+ struct mdc_device *mc = md2mdc_dev(md_obj2dev(mo_p));
+ struct lu_attr *la = &ma->ma_attr;
+ struct mdc_thread_info *mci;
+ struct md_ucred *uc = md_ucred(env);
+ int rc;
+ ENTRY;
+
+ mci = mdc_info_init(env);
+ mci->mci_opdata.op_bias = MDS_CROSS_REF;
+ if (ma->ma_attr_flags & MDS_VTX_BYPASS)
+ mci->mci_opdata.op_bias |= MDS_VTX_BYPASS;
+ else
+ mci->mci_opdata.op_bias &= ~MDS_VTX_BYPASS;
+ mci->mci_opdata.op_fid1 = *lu_object_fid(&mo_p->mo_lu);
+ mci->mci_opdata.op_fid2 = *lf;
+ mci->mci_opdata.op_mode = la->la_mode;
+ mci->mci_opdata.op_mod_time = la->la_ctime;
+ if (uc &&
+ ((uc->mu_valid == UCRED_OLD) || (uc->mu_valid == UCRED_NEW))) {
+ mci->mci_opdata.op_fsuid = uc->mu_fsuid;
+ mci->mci_opdata.op_fsgid = uc->mu_fsgid;
+ mci->mci_opdata.op_cap = uc->mu_cap;
+ if (uc->mu_ginfo || (uc->mu_valid == UCRED_OLD)) {
+ mci->mci_opdata.op_suppgids[0] = uc->mu_suppgids[0];
+ mci->mci_opdata.op_suppgids[1] = uc->mu_suppgids[1];
+ } else {
+ mci->mci_opdata.op_suppgids[0] =
+ mci->mci_opdata.op_suppgids[1] = -1;
+ }
+ } else {
+ mci->mci_opdata.op_fsuid = la->la_uid;
+ mci->mci_opdata.op_fsgid = la->la_gid;
+ mci->mci_opdata.op_cap = current->cap_effective;
+ mci->mci_opdata.op_suppgids[0] =
+ mci->mci_opdata.op_suppgids[1] = -1;
+ }
+
+ rc = md_rename(mc->mc_desc.cl_exp, &mci->mci_opdata, NULL, 0,
+ lname->ln_name, lname->ln_namelen, &mci->mci_req);
+ if (rc == 0) {
+ /* get attr from request */
+ mdc_req2attr_update(env, ma);
+ }
+
+ ptlrpc_req_finished(mci->mci_req);
+
+ RETURN(rc);
+}
+/*
+ * Return resulting fid in sfid
+ * 0: fids are not relatives
+ * fid: 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)
+{
+ struct mdc_device *mc = md2mdc_dev(md_obj2dev(mo));
+ struct mdc_thread_info *mci;
+ struct mdt_body *body;
+ int rc;
+ ENTRY;
+
+ mci = mdc_info_init(env);
+
+ rc = md_is_subdir(mc->mc_desc.cl_exp, lu_object_fid(&mo->mo_lu),
+ fid, &mci->mci_req);
+ if (rc == 0 || rc == -EREMOTE) {
+ body = lustre_msg_buf(mci->mci_req->rq_repmsg, REPLY_REC_OFF,
+ sizeof(*body));
+ LASSERT(body->valid & OBD_MD_FLID);
+
+ CDEBUG(D_INFO, "Remote mdo_is_subdir(), new src "DFID"\n",
+ PFID(&body->fid1));
+ *sfid = body->fid1;
+ }
+ ptlrpc_req_finished(mci->mci_req);
+ RETURN(rc);
+}
+
+static 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