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Diffstat (limited to 'drivers/staging/lustre/lustre/mdc/mdc_request.c')
-rw-r--r--drivers/staging/lustre/lustre/mdc/mdc_request.c2754
1 files changed, 0 insertions, 2754 deletions
diff --git a/drivers/staging/lustre/lustre/mdc/mdc_request.c b/drivers/staging/lustre/lustre/mdc/mdc_request.c
deleted file mode 100644
index 8ee7b4d273b2..000000000000
--- a/drivers/staging/lustre/lustre/mdc/mdc_request.c
+++ /dev/null
@@ -1,2754 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * 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.gnu.org/licenses/gpl-2.0.html
- *
- * GPL HEADER END
- */
-/*
- * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
- * Use is subject to license terms.
- *
- * Copyright (c) 2011, 2015, Intel Corporation.
- */
-/*
- * This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
- */
-
-#define DEBUG_SUBSYSTEM S_MDC
-
-# include <linux/module.h>
-# include <linux/pagemap.h>
-# include <linux/miscdevice.h>
-# include <linux/init.h>
-# include <linux/utsname.h>
-
-#include <lustre_errno.h>
-#include <cl_object.h>
-#include <llog_swab.h>
-#include <lprocfs_status.h>
-#include <lustre_acl.h>
-#include <lustre_fid.h>
-#include <uapi/linux/lustre/lustre_ioctl.h>
-#include <lustre_kernelcomm.h>
-#include <lustre_lmv.h>
-#include <lustre_log.h>
-#include <uapi/linux/lustre/lustre_param.h>
-#include <lustre_swab.h>
-#include <obd_class.h>
-
-#include "mdc_internal.h"
-
-#define REQUEST_MINOR 244
-
-static int mdc_cleanup(struct obd_device *obd);
-
-static inline int mdc_queue_wait(struct ptlrpc_request *req)
-{
- struct client_obd *cli = &req->rq_import->imp_obd->u.cli;
- int rc;
-
- /* obd_get_request_slot() ensures that this client has no more
- * than cl_max_rpcs_in_flight RPCs simultaneously inf light
- * against an MDT.
- */
- rc = obd_get_request_slot(cli);
- if (rc != 0)
- return rc;
-
- rc = ptlrpc_queue_wait(req);
- obd_put_request_slot(cli);
-
- return rc;
-}
-
-static int mdc_getstatus(struct obd_export *exp, struct lu_fid *rootfid)
-{
- struct ptlrpc_request *req;
- struct mdt_body *body;
- int rc;
-
- req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
- &RQF_MDS_GETSTATUS,
- LUSTRE_MDS_VERSION, MDS_GETSTATUS);
- if (!req)
- return -ENOMEM;
-
- mdc_pack_body(req, NULL, 0, 0, -1, 0);
- req->rq_send_state = LUSTRE_IMP_FULL;
-
- ptlrpc_request_set_replen(req);
-
- rc = ptlrpc_queue_wait(req);
- if (rc)
- goto out;
-
- body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
- if (!body) {
- rc = -EPROTO;
- goto out;
- }
-
- *rootfid = body->mbo_fid1;
- CDEBUG(D_NET,
- "root fid=" DFID ", last_committed=%llu\n",
- PFID(rootfid),
- lustre_msg_get_last_committed(req->rq_repmsg));
-out:
- ptlrpc_req_finished(req);
- return rc;
-}
-
-/*
- * This function now is known to always saying that it will receive 4 buffers
- * from server. Even for cases when acl_size and md_size is zero, RPC header
- * will contain 4 fields and RPC itself will contain zero size fields. This is
- * because mdt_getattr*() _always_ returns 4 fields, but if acl is not needed
- * and thus zero, it shrinks it, making zero size. The same story about
- * md_size. And this is course of problem when client waits for smaller number
- * of fields. This issue will be fixed later when client gets aware of RPC
- * layouts. --umka
- */
-static int mdc_getattr_common(struct obd_export *exp,
- struct ptlrpc_request *req)
-{
- struct req_capsule *pill = &req->rq_pill;
- struct mdt_body *body;
- void *eadata;
- int rc;
-
- /* Request message already built. */
- rc = ptlrpc_queue_wait(req);
- if (rc != 0)
- return rc;
-
- /* sanity check for the reply */
- body = req_capsule_server_get(pill, &RMF_MDT_BODY);
- if (!body)
- return -EPROTO;
-
- CDEBUG(D_NET, "mode: %o\n", body->mbo_mode);
-
- mdc_update_max_ea_from_body(exp, body);
- if (body->mbo_eadatasize != 0) {
- eadata = req_capsule_server_sized_get(pill, &RMF_MDT_MD,
- body->mbo_eadatasize);
- if (!eadata)
- return -EPROTO;
- }
-
- return 0;
-}
-
-static int mdc_getattr(struct obd_export *exp, struct md_op_data *op_data,
- struct ptlrpc_request **request)
-{
- struct ptlrpc_request *req;
- int rc;
-
- /* Single MDS without an LMV case */
- if (op_data->op_flags & MF_GET_MDT_IDX) {
- op_data->op_mds = 0;
- return 0;
- }
- *request = NULL;
- req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_GETATTR);
- if (!req)
- return -ENOMEM;
-
- rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR);
- if (rc) {
- ptlrpc_request_free(req);
- return rc;
- }
-
- mdc_pack_body(req, &op_data->op_fid1, op_data->op_valid,
- op_data->op_mode, -1, 0);
-
- req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
- op_data->op_mode);
- ptlrpc_request_set_replen(req);
-
- rc = mdc_getattr_common(exp, req);
- if (rc)
- ptlrpc_req_finished(req);
- else
- *request = req;
- return rc;
-}
-
-static int mdc_getattr_name(struct obd_export *exp, struct md_op_data *op_data,
- struct ptlrpc_request **request)
-{
- struct ptlrpc_request *req;
- int rc;
-
- *request = NULL;
- req = ptlrpc_request_alloc(class_exp2cliimp(exp),
- &RQF_MDS_GETATTR_NAME);
- if (!req)
- return -ENOMEM;
-
- req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
- op_data->op_namelen + 1);
-
- rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR_NAME);
- if (rc) {
- ptlrpc_request_free(req);
- return rc;
- }
-
- mdc_pack_body(req, &op_data->op_fid1, op_data->op_valid,
- op_data->op_mode, op_data->op_suppgids[0], 0);
-
- if (op_data->op_name) {
- char *name = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
-
- LASSERT(strnlen(op_data->op_name, op_data->op_namelen) ==
- op_data->op_namelen);
- memcpy(name, op_data->op_name, op_data->op_namelen);
- }
-
- req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
- op_data->op_mode);
- ptlrpc_request_set_replen(req);
-
- rc = mdc_getattr_common(exp, req);
- if (rc)
- ptlrpc_req_finished(req);
- else
- *request = req;
- return rc;
-}
-
-static int mdc_xattr_common(struct obd_export *exp,
- const struct req_format *fmt,
- const struct lu_fid *fid,
- int opcode, u64 valid,
- const char *xattr_name, const char *input,
- int input_size, int output_size, int flags,
- __u32 suppgid, struct ptlrpc_request **request)
-{
- struct ptlrpc_request *req;
- int xattr_namelen = 0;
- char *tmp;
- int rc;
-
- *request = NULL;
- req = ptlrpc_request_alloc(class_exp2cliimp(exp), fmt);
- if (!req)
- return -ENOMEM;
-
- if (xattr_name) {
- xattr_namelen = strlen(xattr_name) + 1;
- req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
- xattr_namelen);
- }
- if (input_size) {
- LASSERT(input);
- req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_CLIENT,
- input_size);
- }
-
- /* Flush local XATTR locks to get rid of a possible cancel RPC */
- if (opcode == MDS_REINT && fid_is_sane(fid) &&
- exp->exp_connect_data.ocd_ibits_known & MDS_INODELOCK_XATTR) {
- LIST_HEAD(cancels);
- int count;
-
- /* Without that packing would fail */
- if (input_size == 0)
- req_capsule_set_size(&req->rq_pill, &RMF_EADATA,
- RCL_CLIENT, 0);
-
- count = mdc_resource_get_unused(exp, fid,
- &cancels, LCK_EX,
- MDS_INODELOCK_XATTR);
-
- rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count);
- if (rc) {
- ptlrpc_request_free(req);
- return rc;
- }
- } else {
- rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, opcode);
- if (rc) {
- ptlrpc_request_free(req);
- return rc;
- }
- }
-
- if (opcode == MDS_REINT) {
- struct mdt_rec_setxattr *rec;
-
- BUILD_BUG_ON(sizeof(struct mdt_rec_setxattr) !=
- sizeof(struct mdt_rec_reint));
- rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
- rec->sx_opcode = REINT_SETXATTR;
- rec->sx_fsuid = from_kuid(&init_user_ns, current_fsuid());
- rec->sx_fsgid = from_kgid(&init_user_ns, current_fsgid());
- rec->sx_cap = cfs_curproc_cap_pack();
- rec->sx_suppgid1 = suppgid;
- rec->sx_suppgid2 = -1;
- rec->sx_fid = *fid;
- rec->sx_valid = valid | OBD_MD_FLCTIME;
- rec->sx_time = ktime_get_real_seconds();
- rec->sx_size = output_size;
- rec->sx_flags = flags;
-
- } else {
- mdc_pack_body(req, fid, valid, output_size, suppgid, flags);
- }
-
- if (xattr_name) {
- tmp = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
- memcpy(tmp, xattr_name, xattr_namelen);
- }
- if (input_size) {
- tmp = req_capsule_client_get(&req->rq_pill, &RMF_EADATA);
- memcpy(tmp, input, input_size);
- }
-
- if (req_capsule_has_field(&req->rq_pill, &RMF_EADATA, RCL_SERVER))
- req_capsule_set_size(&req->rq_pill, &RMF_EADATA,
- RCL_SERVER, output_size);
- ptlrpc_request_set_replen(req);
-
- /* make rpc */
- if (opcode == MDS_REINT)
- mdc_get_mod_rpc_slot(req, NULL);
-
- rc = ptlrpc_queue_wait(req);
-
- if (opcode == MDS_REINT)
- mdc_put_mod_rpc_slot(req, NULL);
-
- if (rc)
- ptlrpc_req_finished(req);
- else
- *request = req;
- return rc;
-}
-
-static int mdc_setxattr(struct obd_export *exp, const struct lu_fid *fid,
- u64 valid, const char *xattr_name,
- const char *input, int input_size, int output_size,
- int flags, __u32 suppgid,
- struct ptlrpc_request **request)
-{
- return mdc_xattr_common(exp, &RQF_MDS_REINT_SETXATTR,
- fid, MDS_REINT, valid, xattr_name,
- input, input_size, output_size, flags,
- suppgid, request);
-}
-
-static int mdc_getxattr(struct obd_export *exp, const struct lu_fid *fid,
- u64 valid, const char *xattr_name,
- const char *input, int input_size, int output_size,
- int flags, struct ptlrpc_request **request)
-{
- return mdc_xattr_common(exp, &RQF_MDS_GETXATTR,
- fid, MDS_GETXATTR, valid, xattr_name,
- input, input_size, output_size, flags,
- -1, request);
-}
-
-#ifdef CONFIG_FS_POSIX_ACL
-static int mdc_unpack_acl(struct ptlrpc_request *req, struct lustre_md *md)
-{
- struct req_capsule *pill = &req->rq_pill;
- struct mdt_body *body = md->body;
- struct posix_acl *acl;
- void *buf;
- int rc;
-
- if (!body->mbo_aclsize)
- return 0;
-
- buf = req_capsule_server_sized_get(pill, &RMF_ACL, body->mbo_aclsize);
-
- if (!buf)
- return -EPROTO;
-
- acl = posix_acl_from_xattr(&init_user_ns, buf, body->mbo_aclsize);
- if (!acl)
- return 0;
-
- if (IS_ERR(acl)) {
- rc = PTR_ERR(acl);
- CERROR("convert xattr to acl: %d\n", rc);
- return rc;
- }
-
- rc = posix_acl_valid(&init_user_ns, acl);
- if (rc) {
- CERROR("validate acl: %d\n", rc);
- posix_acl_release(acl);
- return rc;
- }
-
- md->posix_acl = acl;
- return 0;
-}
-#else
-#define mdc_unpack_acl(req, md) 0
-#endif
-
-static int mdc_get_lustre_md(struct obd_export *exp,
- struct ptlrpc_request *req,
- struct obd_export *dt_exp,
- struct obd_export *md_exp,
- struct lustre_md *md)
-{
- struct req_capsule *pill = &req->rq_pill;
- int rc;
-
- LASSERT(md);
- memset(md, 0, sizeof(*md));
-
- md->body = req_capsule_server_get(pill, &RMF_MDT_BODY);
-
- if (md->body->mbo_valid & OBD_MD_FLEASIZE) {
- if (!S_ISREG(md->body->mbo_mode)) {
- CDEBUG(D_INFO,
- "OBD_MD_FLEASIZE set, should be a regular file, but is not\n");
- rc = -EPROTO;
- goto out;
- }
-
- if (md->body->mbo_eadatasize == 0) {
- CDEBUG(D_INFO,
- "OBD_MD_FLEASIZE set, but eadatasize 0\n");
- rc = -EPROTO;
- goto out;
- }
-
- md->layout.lb_len = md->body->mbo_eadatasize;
- md->layout.lb_buf = req_capsule_server_sized_get(pill,
- &RMF_MDT_MD,
- md->layout.lb_len);
- if (!md->layout.lb_buf) {
- rc = -EPROTO;
- goto out;
- }
- } else if (md->body->mbo_valid & OBD_MD_FLDIREA) {
- const union lmv_mds_md *lmv;
- size_t lmv_size;
-
- if (!S_ISDIR(md->body->mbo_mode)) {
- CDEBUG(D_INFO,
- "OBD_MD_FLDIREA set, should be a directory, but is not\n");
- rc = -EPROTO;
- goto out;
- }
-
- lmv_size = md->body->mbo_eadatasize;
- if (!lmv_size) {
- CDEBUG(D_INFO,
- "OBD_MD_FLDIREA is set, but eadatasize 0\n");
- return -EPROTO;
- }
- if (md->body->mbo_valid & OBD_MD_MEA) {
- lmv = req_capsule_server_sized_get(pill, &RMF_MDT_MD,
- lmv_size);
- if (!lmv) {
- rc = -EPROTO;
- goto out;
- }
-
- rc = md_unpackmd(md_exp, &md->lmv, lmv, lmv_size);
- if (rc < 0)
- goto out;
-
- if (rc < (typeof(rc))sizeof(*md->lmv)) {
- CDEBUG(D_INFO,
- "size too small: rc < sizeof(*md->lmv) (%d < %d)\n",
- rc, (int)sizeof(*md->lmv));
- rc = -EPROTO;
- goto out;
- }
- }
- }
- rc = 0;
-
- if (md->body->mbo_valid & OBD_MD_FLACL) {
- /* for ACL, it's possible that FLACL is set but aclsize is zero.
- * only when aclsize != 0 there's an actual segment for ACL
- * in reply buffer.
- */
- if (md->body->mbo_aclsize) {
- rc = mdc_unpack_acl(req, md);
- if (rc)
- goto out;
-#ifdef CONFIG_FS_POSIX_ACL
- } else {
- md->posix_acl = NULL;
-#endif
- }
- }
-
-out:
- if (rc) {
-#ifdef CONFIG_FS_POSIX_ACL
- posix_acl_release(md->posix_acl);
-#endif
- }
- return rc;
-}
-
-static int mdc_free_lustre_md(struct obd_export *exp, struct lustre_md *md)
-{
- return 0;
-}
-
-void mdc_replay_open(struct ptlrpc_request *req)
-{
- struct md_open_data *mod = req->rq_cb_data;
- struct ptlrpc_request *close_req;
- struct obd_client_handle *och;
- struct lustre_handle old;
- struct mdt_body *body;
-
- if (!mod) {
- DEBUG_REQ(D_ERROR, req,
- "Can't properly replay without open data.");
- return;
- }
-
- body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
-
- och = mod->mod_och;
- if (och) {
- struct lustre_handle *file_fh;
-
- LASSERT(och->och_magic == OBD_CLIENT_HANDLE_MAGIC);
-
- file_fh = &och->och_fh;
- CDEBUG(D_HA, "updating handle from %#llx to %#llx\n",
- file_fh->cookie, body->mbo_handle.cookie);
- old = *file_fh;
- *file_fh = body->mbo_handle;
- }
- close_req = mod->mod_close_req;
- if (close_req) {
- __u32 opc = lustre_msg_get_opc(close_req->rq_reqmsg);
- struct mdt_ioepoch *epoch;
-
- LASSERT(opc == MDS_CLOSE);
- epoch = req_capsule_client_get(&close_req->rq_pill,
- &RMF_MDT_EPOCH);
- LASSERT(epoch);
-
- if (och)
- LASSERT(!memcmp(&old, &epoch->mio_handle, sizeof(old)));
- DEBUG_REQ(D_HA, close_req, "updating close body with new fh");
- epoch->mio_handle = body->mbo_handle;
- }
-}
-
-void mdc_commit_open(struct ptlrpc_request *req)
-{
- struct md_open_data *mod = req->rq_cb_data;
-
- if (!mod)
- return;
-
- /**
- * No need to touch md_open_data::mod_och, it holds a reference on
- * \var mod and will zero references to each other, \var mod will be
- * freed after that when md_open_data::mod_och will put the reference.
- */
-
- /**
- * Do not let open request to disappear as it still may be needed
- * for close rpc to happen (it may happen on evict only, otherwise
- * ptlrpc_request::rq_replay does not let mdc_commit_open() to be
- * called), just mark this rpc as committed to distinguish these 2
- * cases, see mdc_close() for details. The open request reference will
- * be put along with freeing \var mod.
- */
- ptlrpc_request_addref(req);
- spin_lock(&req->rq_lock);
- req->rq_committed = 1;
- spin_unlock(&req->rq_lock);
- req->rq_cb_data = NULL;
- obd_mod_put(mod);
-}
-
-int mdc_set_open_replay_data(struct obd_export *exp,
- struct obd_client_handle *och,
- struct lookup_intent *it)
-{
- struct md_open_data *mod;
- struct mdt_rec_create *rec;
- struct mdt_body *body;
- struct ptlrpc_request *open_req = it->it_request;
- struct obd_import *imp = open_req->rq_import;
-
- if (!open_req->rq_replay)
- return 0;
-
- rec = req_capsule_client_get(&open_req->rq_pill, &RMF_REC_REINT);
- body = req_capsule_server_get(&open_req->rq_pill, &RMF_MDT_BODY);
- LASSERT(rec);
- /* Incoming message in my byte order (it's been swabbed). */
- /* Outgoing messages always in my byte order. */
- LASSERT(body);
-
- /* Only if the import is replayable, we set replay_open data */
- if (och && imp->imp_replayable) {
- mod = obd_mod_alloc();
- if (!mod) {
- DEBUG_REQ(D_ERROR, open_req,
- "Can't allocate md_open_data");
- return 0;
- }
-
- /**
- * Take a reference on \var mod, to be freed on mdc_close().
- * It protects \var mod from being freed on eviction (commit
- * callback is called despite rq_replay flag).
- * Another reference for \var och.
- */
- obd_mod_get(mod);
- obd_mod_get(mod);
-
- spin_lock(&open_req->rq_lock);
- och->och_mod = mod;
- mod->mod_och = och;
- mod->mod_is_create = it_disposition(it, DISP_OPEN_CREATE) ||
- it_disposition(it, DISP_OPEN_STRIPE);
- mod->mod_open_req = open_req;
- open_req->rq_cb_data = mod;
- open_req->rq_commit_cb = mdc_commit_open;
- spin_unlock(&open_req->rq_lock);
- }
-
- rec->cr_fid2 = body->mbo_fid1;
- rec->cr_ioepoch = body->mbo_ioepoch;
- rec->cr_old_handle.cookie = body->mbo_handle.cookie;
- open_req->rq_replay_cb = mdc_replay_open;
- if (!fid_is_sane(&body->mbo_fid1)) {
- DEBUG_REQ(D_ERROR, open_req,
- "Saving replay request with insane fid");
- LBUG();
- }
-
- DEBUG_REQ(D_RPCTRACE, open_req, "Set up open replay data");
- return 0;
-}
-
-static void mdc_free_open(struct md_open_data *mod)
-{
- int committed = 0;
-
- if (mod->mod_is_create == 0 &&
- imp_connect_disp_stripe(mod->mod_open_req->rq_import))
- committed = 1;
-
- /*
- * No reason to asssert here if the open request has
- * rq_replay == 1. It means that mdc_close failed, and
- * close request wasn`t sent. It is not fatal to client.
- * The worst thing is eviction if the client gets open lock
- */
- DEBUG_REQ(D_RPCTRACE, mod->mod_open_req,
- "free open request rq_replay = %d\n",
- mod->mod_open_req->rq_replay);
-
- ptlrpc_request_committed(mod->mod_open_req, committed);
- if (mod->mod_close_req)
- ptlrpc_request_committed(mod->mod_close_req, committed);
-}
-
-static int mdc_clear_open_replay_data(struct obd_export *exp,
- struct obd_client_handle *och)
-{
- struct md_open_data *mod = och->och_mod;
-
- /**
- * It is possible to not have \var mod in a case of eviction between
- * lookup and ll_file_open().
- **/
- if (!mod)
- return 0;
-
- LASSERT(mod != LP_POISON);
- LASSERT(mod->mod_open_req);
- mdc_free_open(mod);
-
- mod->mod_och = NULL;
- och->och_mod = NULL;
- obd_mod_put(mod);
-
- return 0;
-}
-
-static int mdc_close(struct obd_export *exp, struct md_op_data *op_data,
- struct md_open_data *mod, struct ptlrpc_request **request)
-{
- struct obd_device *obd = class_exp2obd(exp);
- struct ptlrpc_request *req;
- struct req_format *req_fmt;
- int rc;
- int saved_rc = 0;
-
- if (op_data->op_bias & MDS_HSM_RELEASE) {
- req_fmt = &RQF_MDS_INTENT_CLOSE;
-
- /* allocate a FID for volatile file */
- rc = mdc_fid_alloc(NULL, exp, &op_data->op_fid2, op_data);
- if (rc < 0) {
- CERROR("%s: " DFID " failed to allocate FID: %d\n",
- obd->obd_name, PFID(&op_data->op_fid1), rc);
- /* save the errcode and proceed to close */
- saved_rc = rc;
- }
- } else if (op_data->op_bias & MDS_CLOSE_LAYOUT_SWAP) {
- req_fmt = &RQF_MDS_INTENT_CLOSE;
- } else {
- req_fmt = &RQF_MDS_CLOSE;
- }
-
- *request = NULL;
- if (OBD_FAIL_CHECK(OBD_FAIL_MDC_CLOSE))
- req = NULL;
- else
- req = ptlrpc_request_alloc(class_exp2cliimp(exp), req_fmt);
-
- /* Ensure that this close's handle is fixed up during replay. */
- if (likely(mod)) {
- LASSERTF(mod->mod_open_req &&
- mod->mod_open_req->rq_type != LI_POISON,
- "POISONED open %p!\n", mod->mod_open_req);
-
- mod->mod_close_req = req;
-
- DEBUG_REQ(D_HA, mod->mod_open_req, "matched open");
- /* We no longer want to preserve this open for replay even
- * though the open was committed. b=3632, b=3633
- */
- spin_lock(&mod->mod_open_req->rq_lock);
- mod->mod_open_req->rq_replay = 0;
- spin_unlock(&mod->mod_open_req->rq_lock);
- } else {
- CDEBUG(D_HA,
- "couldn't find open req; expecting close error\n");
- }
- if (!req) {
- /*
- * TODO: repeat close after errors
- */
- CWARN("%s: close of FID " DFID " failed, file reference will be dropped when this client unmounts or is evicted\n",
- obd->obd_name, PFID(&op_data->op_fid1));
- rc = -ENOMEM;
- goto out;
- }
-
- rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_CLOSE);
- if (rc) {
- ptlrpc_request_free(req);
- req = NULL;
- goto out;
- }
-
- /*
- * To avoid a livelock (bug 7034), we need to send CLOSE RPCs to a
- * portal whose threads are not taking any DLM locks and are therefore
- * always progressing
- */
- req->rq_request_portal = MDS_READPAGE_PORTAL;
- ptlrpc_at_set_req_timeout(req);
-
- mdc_close_pack(req, op_data);
-
- req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
- obd->u.cli.cl_default_mds_easize);
-
- ptlrpc_request_set_replen(req);
-
- mdc_get_mod_rpc_slot(req, NULL);
- rc = ptlrpc_queue_wait(req);
- mdc_put_mod_rpc_slot(req, NULL);
-
- if (!req->rq_repmsg) {
- CDEBUG(D_RPCTRACE, "request failed to send: %p, %d\n", req,
- req->rq_status);
- if (rc == 0)
- rc = req->rq_status ?: -EIO;
- } else if (rc == 0 || rc == -EAGAIN) {
- struct mdt_body *body;
-
- rc = lustre_msg_get_status(req->rq_repmsg);
- if (lustre_msg_get_type(req->rq_repmsg) == PTL_RPC_MSG_ERR) {
- DEBUG_REQ(D_ERROR, req,
- "type == PTL_RPC_MSG_ERR, err = %d", rc);
- if (rc > 0)
- rc = -rc;
- }
- body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
- if (!body)
- rc = -EPROTO;
- } else if (rc == -ESTALE) {
- /**
- * it can be allowed error after 3633 if open was committed and
- * server failed before close was sent. Let's check if mod
- * exists and return no error in that case
- */
- if (mod) {
- DEBUG_REQ(D_HA, req, "Reset ESTALE = %d", rc);
- if (mod->mod_open_req->rq_committed)
- rc = 0;
- }
- }
-
-out:
- if (mod) {
- if (rc != 0)
- mod->mod_close_req = NULL;
- /* Since now, mod is accessed through open_req only,
- * thus close req does not keep a reference on mod anymore.
- */
- obd_mod_put(mod);
- }
- *request = req;
- return rc < 0 ? rc : saved_rc;
-}
-
-static int mdc_getpage(struct obd_export *exp, const struct lu_fid *fid,
- u64 offset, struct page **pages, int npages,
- struct ptlrpc_request **request)
-{
- struct ptlrpc_bulk_desc *desc;
- struct ptlrpc_request *req;
- wait_queue_head_t waitq;
- int resends = 0;
- int rc;
- int i;
-
- *request = NULL;
- init_waitqueue_head(&waitq);
-
-restart_bulk:
- req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_READPAGE);
- if (!req)
- return -ENOMEM;
-
- rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_READPAGE);
- if (rc) {
- ptlrpc_request_free(req);
- return rc;
- }
-
- req->rq_request_portal = MDS_READPAGE_PORTAL;
- ptlrpc_at_set_req_timeout(req);
-
- desc = ptlrpc_prep_bulk_imp(req, npages, 1,
- PTLRPC_BULK_PUT_SINK | PTLRPC_BULK_BUF_KIOV,
- MDS_BULK_PORTAL,
- &ptlrpc_bulk_kiov_pin_ops);
- if (!desc) {
- ptlrpc_request_free(req);
- return -ENOMEM;
- }
-
- /* NB req now owns desc and will free it when it gets freed */
- for (i = 0; i < npages; i++)
- desc->bd_frag_ops->add_kiov_frag(desc, pages[i], 0, PAGE_SIZE);
-
- mdc_readdir_pack(req, offset, PAGE_SIZE * npages, fid);
-
- ptlrpc_request_set_replen(req);
- rc = ptlrpc_queue_wait(req);
- if (rc) {
- ptlrpc_req_finished(req);
- if (rc != -ETIMEDOUT)
- return rc;
-
- resends++;
- if (!client_should_resend(resends, &exp->exp_obd->u.cli)) {
- CERROR("%s: too many resend retries: rc = %d\n",
- exp->exp_obd->obd_name, -EIO);
- return -EIO;
- }
- wait_event_idle_timeout(waitq, 0, resends * HZ);
-
- goto restart_bulk;
- }
-
- rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk,
- req->rq_bulk->bd_nob_transferred);
- if (rc < 0) {
- ptlrpc_req_finished(req);
- return rc;
- }
-
- if (req->rq_bulk->bd_nob_transferred & ~LU_PAGE_MASK) {
- CERROR("%s: unexpected bytes transferred: %d (%ld expected)\n",
- exp->exp_obd->obd_name, req->rq_bulk->bd_nob_transferred,
- PAGE_SIZE * npages);
- ptlrpc_req_finished(req);
- return -EPROTO;
- }
-
- *request = req;
- return 0;
-}
-
-static void mdc_release_page(struct page *page, int remove)
-{
- if (remove) {
- lock_page(page);
- if (likely(page->mapping))
- truncate_complete_page(page->mapping, page);
- unlock_page(page);
- }
- put_page(page);
-}
-
-static struct page *mdc_page_locate(struct address_space *mapping, __u64 *hash,
- __u64 *start, __u64 *end, int hash64)
-{
- /*
- * Complement of hash is used as an index so that
- * radix_tree_gang_lookup() can be used to find a page with starting
- * hash _smaller_ than one we are looking for.
- */
- unsigned long offset = hash_x_index(*hash, hash64);
- struct page *page;
- int found;
-
- xa_lock_irq(&mapping->i_pages);
- found = radix_tree_gang_lookup(&mapping->i_pages,
- (void **)&page, offset, 1);
- if (found > 0 && !radix_tree_exceptional_entry(page)) {
- struct lu_dirpage *dp;
-
- get_page(page);
- xa_unlock_irq(&mapping->i_pages);
- /*
- * In contrast to find_lock_page() we are sure that directory
- * page cannot be truncated (while DLM lock is held) and,
- * hence, can avoid restart.
- *
- * In fact, page cannot be locked here at all, because
- * mdc_read_page_remote does synchronous io.
- */
- wait_on_page_locked(page);
- if (PageUptodate(page)) {
- dp = kmap(page);
- if (BITS_PER_LONG == 32 && hash64) {
- *start = le64_to_cpu(dp->ldp_hash_start) >> 32;
- *end = le64_to_cpu(dp->ldp_hash_end) >> 32;
- *hash = *hash >> 32;
- } else {
- *start = le64_to_cpu(dp->ldp_hash_start);
- *end = le64_to_cpu(dp->ldp_hash_end);
- }
- if (unlikely(*start == 1 && *hash == 0))
- *hash = *start;
- else
- LASSERTF(*start <= *hash, "start = %#llx,end = %#llx,hash = %#llx\n",
- *start, *end, *hash);
- CDEBUG(D_VFSTRACE, "offset %lx [%#llx %#llx], hash %#llx\n",
- offset, *start, *end, *hash);
- if (*hash > *end) {
- kunmap(page);
- mdc_release_page(page, 0);
- page = NULL;
- } else if (*end != *start && *hash == *end) {
- /*
- * upon hash collision, remove this page,
- * otherwise put page reference, and
- * mdc_read_page_remote() will issue RPC to
- * fetch the page we want.
- */
- kunmap(page);
- mdc_release_page(page,
- le32_to_cpu(dp->ldp_flags) & LDF_COLLIDE);
- page = NULL;
- }
- } else {
- put_page(page);
- page = ERR_PTR(-EIO);
- }
- } else {
- xa_unlock_irq(&mapping->i_pages);
- page = NULL;
- }
- return page;
-}
-
-/*
- * Adjust a set of pages, each page containing an array of lu_dirpages,
- * so that each page can be used as a single logical lu_dirpage.
- *
- * A lu_dirpage is laid out as follows, where s = ldp_hash_start,
- * e = ldp_hash_end, f = ldp_flags, p = padding, and each "ent" is a
- * struct lu_dirent. It has size up to LU_PAGE_SIZE. The ldp_hash_end
- * value is used as a cookie to request the next lu_dirpage in a
- * directory listing that spans multiple pages (two in this example):
- * ________
- * | |
- * .|--------v------- -----.
- * |s|e|f|p|ent|ent| ... |ent|
- * '--|-------------- -----' Each PAGE contains a single
- * '------. lu_dirpage.
- * .---------v------- -----.
- * |s|e|f|p|ent| 0 | ... | 0 |
- * '----------------- -----'
- *
- * However, on hosts where the native VM page size (PAGE_SIZE) is
- * larger than LU_PAGE_SIZE, a single host page may contain multiple
- * lu_dirpages. After reading the lu_dirpages from the MDS, the
- * ldp_hash_end of the first lu_dirpage refers to the one immediately
- * after it in the same PAGE (arrows simplified for brevity, but
- * in general e0==s1, e1==s2, etc.):
- *
- * .-------------------- -----.
- * |s0|e0|f0|p|ent|ent| ... |ent|
- * |---v---------------- -----|
- * |s1|e1|f1|p|ent|ent| ... |ent|
- * |---v---------------- -----| Here, each PAGE contains
- * ... multiple lu_dirpages.
- * |---v---------------- -----|
- * |s'|e'|f'|p|ent|ent| ... |ent|
- * '---|---------------- -----'
- * v
- * .----------------------------.
- * | next PAGE |
- *
- * This structure is transformed into a single logical lu_dirpage as follows:
- *
- * - Replace e0 with e' so the request for the next lu_dirpage gets the page
- * labeled 'next PAGE'.
- *
- * - Copy the LDF_COLLIDE flag from f' to f0 to correctly reflect whether
- * a hash collision with the next page exists.
- *
- * - Adjust the lde_reclen of the ending entry of each lu_dirpage to span
- * to the first entry of the next lu_dirpage.
- */
-#if PAGE_SIZE > LU_PAGE_SIZE
-static void mdc_adjust_dirpages(struct page **pages, int cfs_pgs, int lu_pgs)
-{
- int i;
-
- for (i = 0; i < cfs_pgs; i++) {
- struct lu_dirpage *dp = kmap(pages[i]);
- __u64 hash_end = le64_to_cpu(dp->ldp_hash_end);
- __u32 flags = le32_to_cpu(dp->ldp_flags);
- struct lu_dirpage *first = dp;
-
- while (--lu_pgs > 0) {
- struct lu_dirent *end_dirent = NULL;
- struct lu_dirent *ent;
-
- for (ent = lu_dirent_start(dp); ent;
- ent = lu_dirent_next(ent))
- end_dirent = ent;
-
- /* Advance dp to next lu_dirpage. */
- dp = (struct lu_dirpage *)((char *)dp + LU_PAGE_SIZE);
-
- /* Check if we've reached the end of the CFS_PAGE. */
- if (!((unsigned long)dp & ~PAGE_MASK))
- break;
-
- /* Save the hash and flags of this lu_dirpage. */
- hash_end = le64_to_cpu(dp->ldp_hash_end);
- flags = le32_to_cpu(dp->ldp_flags);
-
- /* Check if lu_dirpage contains no entries. */
- if (!end_dirent)
- break;
-
- /*
- * Enlarge the end entry lde_reclen from 0 to
- * first entry of next lu_dirpage.
- */
- LASSERT(!le16_to_cpu(end_dirent->lde_reclen));
- end_dirent->lde_reclen =
- cpu_to_le16((char *)(dp->ldp_entries) -
- (char *)end_dirent);
- }
-
- first->ldp_hash_end = hash_end;
- first->ldp_flags &= ~cpu_to_le32(LDF_COLLIDE);
- first->ldp_flags |= flags & cpu_to_le32(LDF_COLLIDE);
-
- kunmap(pages[i]);
- }
- LASSERTF(lu_pgs == 0, "left = %d", lu_pgs);
-}
-#else
-#define mdc_adjust_dirpages(pages, cfs_pgs, lu_pgs) do {} while (0)
-#endif /* PAGE_SIZE > LU_PAGE_SIZE */
-
-/* parameters for readdir page */
-struct readpage_param {
- struct md_op_data *rp_mod;
- __u64 rp_off;
- int rp_hash64;
- struct obd_export *rp_exp;
- struct md_callback *rp_cb;
-};
-
-/**
- * Read pages from server.
- *
- * Page in MDS_READPAGE RPC is packed in LU_PAGE_SIZE, and each page contains
- * a header lu_dirpage which describes the start/end hash, and whether this
- * page is empty (contains no dir entry) or hash collide with next page.
- * After client receives reply, several pages will be integrated into dir page
- * in PAGE_SIZE (if PAGE_SIZE greater than LU_PAGE_SIZE), and the
- * lu_dirpage for this integrated page will be adjusted.
- **/
-static int mdc_read_page_remote(void *data, struct page *page0)
-{
- struct readpage_param *rp = data;
- struct page **page_pool;
- struct page *page;
- struct lu_dirpage *dp;
- int rd_pgs = 0; /* number of pages read actually */
- int npages;
- struct md_op_data *op_data = rp->rp_mod;
- struct ptlrpc_request *req;
- int max_pages = op_data->op_max_pages;
- struct inode *inode;
- struct lu_fid *fid;
- int i;
- int rc;
-
- LASSERT(max_pages > 0 && max_pages <= PTLRPC_MAX_BRW_PAGES);
- inode = op_data->op_data;
- fid = &op_data->op_fid1;
- LASSERT(inode);
-
- page_pool = kcalloc(max_pages, sizeof(page), GFP_NOFS);
- if (page_pool) {
- page_pool[0] = page0;
- } else {
- page_pool = &page0;
- max_pages = 1;
- }
-
- for (npages = 1; npages < max_pages; npages++) {
- page = page_cache_alloc(inode->i_mapping);
- if (!page)
- break;
- page_pool[npages] = page;
- }
-
- rc = mdc_getpage(rp->rp_exp, fid, rp->rp_off, page_pool, npages, &req);
- if (!rc) {
- int lu_pgs = req->rq_bulk->bd_nob_transferred;
-
- rd_pgs = (req->rq_bulk->bd_nob_transferred +
- PAGE_SIZE - 1) >> PAGE_SHIFT;
- lu_pgs >>= LU_PAGE_SHIFT;
- LASSERT(!(req->rq_bulk->bd_nob_transferred & ~LU_PAGE_MASK));
-
- CDEBUG(D_INODE, "read %d(%d) pages\n", rd_pgs, lu_pgs);
-
- mdc_adjust_dirpages(page_pool, rd_pgs, lu_pgs);
-
- SetPageUptodate(page0);
- }
-
- unlock_page(page0);
- ptlrpc_req_finished(req);
- CDEBUG(D_CACHE, "read %d/%d pages\n", rd_pgs, npages);
- for (i = 1; i < npages; i++) {
- unsigned long offset;
- __u64 hash;
- int ret;
-
- page = page_pool[i];
-
- if (rc < 0 || i >= rd_pgs) {
- put_page(page);
- continue;
- }
-
- SetPageUptodate(page);
-
- dp = kmap(page);
- hash = le64_to_cpu(dp->ldp_hash_start);
- kunmap(page);
-
- offset = hash_x_index(hash, rp->rp_hash64);
-
- prefetchw(&page->flags);
- ret = add_to_page_cache_lru(page, inode->i_mapping, offset,
- GFP_KERNEL);
- if (!ret)
- unlock_page(page);
- else
- CDEBUG(D_VFSTRACE, "page %lu add to page cache failed: rc = %d\n",
- offset, ret);
- put_page(page);
- }
-
- if (page_pool != &page0)
- kfree(page_pool);
-
- return rc;
-}
-
-/**
- * Read dir page from cache first, if it can not find it, read it from
- * server and add into the cache.
- *
- * \param[in] exp MDC export
- * \param[in] op_data client MD stack parameters, transferring parameters
- * between different layers on client MD stack.
- * \param[in] cb_op callback required for ldlm lock enqueue during
- * read page
- * \param[in] hash_offset the hash offset of the page to be read
- * \param[in] ppage the page to be read
- *
- * retval = 0 get the page successfully
- * errno(<0) get the page failed
- */
-static int mdc_read_page(struct obd_export *exp, struct md_op_data *op_data,
- struct md_callback *cb_op, __u64 hash_offset,
- struct page **ppage)
-{
- struct lookup_intent it = { .it_op = IT_READDIR };
- struct page *page;
- struct inode *dir = op_data->op_data;
- struct address_space *mapping;
- struct lu_dirpage *dp;
- __u64 start = 0;
- __u64 end = 0;
- struct lustre_handle lockh;
- struct ptlrpc_request *enq_req = NULL;
- struct readpage_param rp_param;
- int rc;
-
- *ppage = NULL;
-
- LASSERT(dir);
- mapping = dir->i_mapping;
-
- rc = mdc_intent_lock(exp, op_data, &it, &enq_req,
- cb_op->md_blocking_ast, 0);
- if (enq_req)
- ptlrpc_req_finished(enq_req);
-
- if (rc < 0) {
- CERROR("%s: " DFID " lock enqueue fails: rc = %d\n",
- exp->exp_obd->obd_name, PFID(&op_data->op_fid1), rc);
- return rc;
- }
-
- rc = 0;
- lockh.cookie = it.it_lock_handle;
- mdc_set_lock_data(exp, &lockh, dir, NULL);
-
- rp_param.rp_off = hash_offset;
- rp_param.rp_hash64 = op_data->op_cli_flags & CLI_HASH64;
- page = mdc_page_locate(mapping, &rp_param.rp_off, &start, &end,
- rp_param.rp_hash64);
- if (IS_ERR(page)) {
- CDEBUG(D_INFO, "%s: dir page locate: " DFID " at %llu: rc %ld\n",
- exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
- rp_param.rp_off, PTR_ERR(page));
- rc = PTR_ERR(page);
- goto out_unlock;
- } else if (page) {
- /*
- * XXX nikita: not entirely correct handling of a corner case:
- * suppose hash chain of entries with hash value HASH crosses
- * border between pages P0 and P1. First both P0 and P1 are
- * cached, seekdir() is called for some entry from the P0 part
- * of the chain. Later P0 goes out of cache. telldir(HASH)
- * happens and finds P1, as it starts with matching hash
- * value. Remaining entries from P0 part of the chain are
- * skipped. (Is that really a bug?)
- *
- * Possible solutions: 0. don't cache P1 is such case, handle
- * it as an "overflow" page. 1. invalidate all pages at
- * once. 2. use HASH|1 as an index for P1.
- */
- goto hash_collision;
- }
-
- rp_param.rp_exp = exp;
- rp_param.rp_mod = op_data;
- page = read_cache_page(mapping,
- hash_x_index(rp_param.rp_off,
- rp_param.rp_hash64),
- mdc_read_page_remote, &rp_param);
- if (IS_ERR(page)) {
- CERROR("%s: read cache page: " DFID " at %llu: rc %ld\n",
- exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
- rp_param.rp_off, PTR_ERR(page));
- rc = PTR_ERR(page);
- goto out_unlock;
- }
-
- wait_on_page_locked(page);
- (void)kmap(page);
- if (!PageUptodate(page)) {
- CERROR("%s: page not updated: " DFID " at %llu: rc %d\n",
- exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
- rp_param.rp_off, -5);
- goto fail;
- }
- if (!PageChecked(page))
- SetPageChecked(page);
- if (PageError(page)) {
- CERROR("%s: page error: " DFID " at %llu: rc %d\n",
- exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
- rp_param.rp_off, -5);
- goto fail;
- }
-
-hash_collision:
- dp = page_address(page);
- if (BITS_PER_LONG == 32 && rp_param.rp_hash64) {
- start = le64_to_cpu(dp->ldp_hash_start) >> 32;
- end = le64_to_cpu(dp->ldp_hash_end) >> 32;
- rp_param.rp_off = hash_offset >> 32;
- } else {
- start = le64_to_cpu(dp->ldp_hash_start);
- end = le64_to_cpu(dp->ldp_hash_end);
- rp_param.rp_off = hash_offset;
- }
- if (end == start) {
- LASSERT(start == rp_param.rp_off);
- CWARN("Page-wide hash collision: %#lx\n", (unsigned long)end);
-#if BITS_PER_LONG == 32
- CWARN("Real page-wide hash collision at [%llu %llu] with hash %llu\n",
- le64_to_cpu(dp->ldp_hash_start),
- le64_to_cpu(dp->ldp_hash_end), hash_offset);
-#endif
- /*
- * Fetch whole overflow chain...
- *
- * XXX not yet.
- */
- goto fail;
- }
- *ppage = page;
-out_unlock:
- ldlm_lock_decref(&lockh, it.it_lock_mode);
- return rc;
-fail:
- kunmap(page);
- mdc_release_page(page, 1);
- rc = -EIO;
- goto out_unlock;
-}
-
-static int mdc_statfs(const struct lu_env *env,
- struct obd_export *exp, struct obd_statfs *osfs,
- __u64 max_age, __u32 flags)
-{
- struct obd_device *obd = class_exp2obd(exp);
- struct ptlrpc_request *req;
- struct obd_statfs *msfs;
- struct obd_import *imp = NULL;
- int rc;
-
- /*
- * Since the request might also come from lprocfs, so we need
- * sync this with client_disconnect_export Bug15684
- */
- down_read(&obd->u.cli.cl_sem);
- if (obd->u.cli.cl_import)
- imp = class_import_get(obd->u.cli.cl_import);
- up_read(&obd->u.cli.cl_sem);
- if (!imp)
- return -ENODEV;
-
- req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_STATFS,
- LUSTRE_MDS_VERSION, MDS_STATFS);
- if (!req) {
- rc = -ENOMEM;
- goto output;
- }
-
- ptlrpc_request_set_replen(req);
-
- if (flags & OBD_STATFS_NODELAY) {
- /* procfs requests not want stay in wait for avoid deadlock */
- req->rq_no_resend = 1;
- req->rq_no_delay = 1;
- }
-
- rc = ptlrpc_queue_wait(req);
- if (rc) {
- /* check connection error first */
- if (imp->imp_connect_error)
- rc = imp->imp_connect_error;
- goto out;
- }
-
- msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
- if (!msfs) {
- rc = -EPROTO;
- goto out;
- }
-
- *osfs = *msfs;
-out:
- ptlrpc_req_finished(req);
-output:
- class_import_put(imp);
- return rc;
-}
-
-static int mdc_ioc_fid2path(struct obd_export *exp, struct getinfo_fid2path *gf)
-{
- __u32 keylen, vallen;
- void *key;
- int rc;
-
- if (gf->gf_pathlen > PATH_MAX)
- return -ENAMETOOLONG;
- if (gf->gf_pathlen < 2)
- return -EOVERFLOW;
-
- /* Key is KEY_FID2PATH + getinfo_fid2path description */
- keylen = cfs_size_round(sizeof(KEY_FID2PATH)) + sizeof(*gf);
- key = kzalloc(keylen, GFP_NOFS);
- if (!key)
- return -ENOMEM;
- memcpy(key, KEY_FID2PATH, sizeof(KEY_FID2PATH));
- memcpy(key + cfs_size_round(sizeof(KEY_FID2PATH)), gf, sizeof(*gf));
-
- CDEBUG(D_IOCTL, "path get " DFID " from %llu #%d\n",
- PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno);
-
- if (!fid_is_sane(&gf->gf_fid)) {
- rc = -EINVAL;
- goto out;
- }
-
- /* Val is struct getinfo_fid2path result plus path */
- vallen = sizeof(*gf) + gf->gf_pathlen;
-
- rc = obd_get_info(NULL, exp, keylen, key, &vallen, gf);
- if (rc != 0 && rc != -EREMOTE)
- goto out;
-
- if (vallen <= sizeof(*gf)) {
- rc = -EPROTO;
- goto out;
- } else if (vallen > sizeof(*gf) + gf->gf_pathlen) {
- rc = -EOVERFLOW;
- goto out;
- }
-
- CDEBUG(D_IOCTL, "path got " DFID " from %llu #%d: %s\n",
- PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno,
- gf->gf_pathlen < 512 ? gf->gf_path :
- /* only log the last 512 characters of the path */
- gf->gf_path + gf->gf_pathlen - 512);
-
-out:
- kfree(key);
- return rc;
-}
-
-static int mdc_ioc_hsm_progress(struct obd_export *exp,
- struct hsm_progress_kernel *hpk)
-{
- struct obd_import *imp = class_exp2cliimp(exp);
- struct hsm_progress_kernel *req_hpk;
- struct ptlrpc_request *req;
- int rc;
-
- req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_PROGRESS,
- LUSTRE_MDS_VERSION, MDS_HSM_PROGRESS);
- if (!req) {
- rc = -ENOMEM;
- goto out;
- }
-
- mdc_pack_body(req, NULL, 0, 0, -1, 0);
-
- /* Copy hsm_progress struct */
- req_hpk = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_PROGRESS);
- if (!req_hpk) {
- rc = -EPROTO;
- goto out;
- }
-
- *req_hpk = *hpk;
- req_hpk->hpk_errval = lustre_errno_hton(hpk->hpk_errval);
-
- ptlrpc_request_set_replen(req);
-
- mdc_get_mod_rpc_slot(req, NULL);
- rc = ptlrpc_queue_wait(req);
- mdc_put_mod_rpc_slot(req, NULL);
-out:
- ptlrpc_req_finished(req);
- return rc;
-}
-
-static int mdc_ioc_hsm_ct_register(struct obd_import *imp, __u32 archives)
-{
- __u32 *archive_mask;
- struct ptlrpc_request *req;
- int rc;
-
- req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_CT_REGISTER,
- LUSTRE_MDS_VERSION,
- MDS_HSM_CT_REGISTER);
- if (!req) {
- rc = -ENOMEM;
- goto out;
- }
-
- mdc_pack_body(req, NULL, 0, 0, -1, 0);
-
- /* Copy hsm_progress struct */
- archive_mask = req_capsule_client_get(&req->rq_pill,
- &RMF_MDS_HSM_ARCHIVE);
- if (!archive_mask) {
- rc = -EPROTO;
- goto out;
- }
-
- *archive_mask = archives;
-
- ptlrpc_request_set_replen(req);
-
- rc = mdc_queue_wait(req);
-out:
- ptlrpc_req_finished(req);
- return rc;
-}
-
-static int mdc_ioc_hsm_current_action(struct obd_export *exp,
- struct md_op_data *op_data)
-{
- struct hsm_current_action *hca = op_data->op_data;
- struct hsm_current_action *req_hca;
- struct ptlrpc_request *req;
- int rc;
-
- req = ptlrpc_request_alloc(class_exp2cliimp(exp),
- &RQF_MDS_HSM_ACTION);
- if (!req)
- return -ENOMEM;
-
- rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_ACTION);
- if (rc) {
- ptlrpc_request_free(req);
- return rc;
- }
-
- mdc_pack_body(req, &op_data->op_fid1, 0, 0,
- op_data->op_suppgids[0], 0);
-
- ptlrpc_request_set_replen(req);
-
- rc = mdc_queue_wait(req);
- if (rc)
- goto out;
-
- req_hca = req_capsule_server_get(&req->rq_pill,
- &RMF_MDS_HSM_CURRENT_ACTION);
- if (!req_hca) {
- rc = -EPROTO;
- goto out;
- }
-
- *hca = *req_hca;
-
-out:
- ptlrpc_req_finished(req);
- return rc;
-}
-
-static int mdc_ioc_hsm_ct_unregister(struct obd_import *imp)
-{
- struct ptlrpc_request *req;
- int rc;
-
- req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_CT_UNREGISTER,
- LUSTRE_MDS_VERSION,
- MDS_HSM_CT_UNREGISTER);
- if (!req) {
- rc = -ENOMEM;
- goto out;
- }
-
- mdc_pack_body(req, NULL, 0, 0, -1, 0);
-
- ptlrpc_request_set_replen(req);
-
- rc = mdc_queue_wait(req);
-out:
- ptlrpc_req_finished(req);
- return rc;
-}
-
-static int mdc_ioc_hsm_state_get(struct obd_export *exp,
- struct md_op_data *op_data)
-{
- struct hsm_user_state *hus = op_data->op_data;
- struct hsm_user_state *req_hus;
- struct ptlrpc_request *req;
- int rc;
-
- req = ptlrpc_request_alloc(class_exp2cliimp(exp),
- &RQF_MDS_HSM_STATE_GET);
- if (!req)
- return -ENOMEM;
-
- rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_STATE_GET);
- if (rc != 0) {
- ptlrpc_request_free(req);
- return rc;
- }
-
- mdc_pack_body(req, &op_data->op_fid1, 0, 0,
- op_data->op_suppgids[0], 0);
-
- ptlrpc_request_set_replen(req);
-
- rc = mdc_queue_wait(req);
- if (rc)
- goto out;
-
- req_hus = req_capsule_server_get(&req->rq_pill, &RMF_HSM_USER_STATE);
- if (!req_hus) {
- rc = -EPROTO;
- goto out;
- }
-
- *hus = *req_hus;
-
-out:
- ptlrpc_req_finished(req);
- return rc;
-}
-
-static int mdc_ioc_hsm_state_set(struct obd_export *exp,
- struct md_op_data *op_data)
-{
- struct hsm_state_set *hss = op_data->op_data;
- struct hsm_state_set *req_hss;
- struct ptlrpc_request *req;
- int rc;
-
- req = ptlrpc_request_alloc(class_exp2cliimp(exp),
- &RQF_MDS_HSM_STATE_SET);
- if (!req)
- return -ENOMEM;
-
- rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_STATE_SET);
- if (rc) {
- ptlrpc_request_free(req);
- return rc;
- }
-
- mdc_pack_body(req, &op_data->op_fid1, 0, 0,
- op_data->op_suppgids[0], 0);
-
- /* Copy states */
- req_hss = req_capsule_client_get(&req->rq_pill, &RMF_HSM_STATE_SET);
- if (!req_hss) {
- rc = -EPROTO;
- goto out;
- }
- *req_hss = *hss;
-
- ptlrpc_request_set_replen(req);
-
- mdc_get_mod_rpc_slot(req, NULL);
- rc = ptlrpc_queue_wait(req);
- mdc_put_mod_rpc_slot(req, NULL);
-out:
- ptlrpc_req_finished(req);
- return rc;
-}
-
-static int mdc_ioc_hsm_request(struct obd_export *exp,
- struct hsm_user_request *hur)
-{
- struct obd_import *imp = class_exp2cliimp(exp);
- struct ptlrpc_request *req;
- struct hsm_request *req_hr;
- struct hsm_user_item *req_hui;
- char *req_opaque;
- int rc;
-
- req = ptlrpc_request_alloc(imp, &RQF_MDS_HSM_REQUEST);
- if (!req) {
- rc = -ENOMEM;
- goto out;
- }
-
- req_capsule_set_size(&req->rq_pill, &RMF_MDS_HSM_USER_ITEM, RCL_CLIENT,
- hur->hur_request.hr_itemcount
- * sizeof(struct hsm_user_item));
- req_capsule_set_size(&req->rq_pill, &RMF_GENERIC_DATA, RCL_CLIENT,
- hur->hur_request.hr_data_len);
-
- rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_REQUEST);
- if (rc) {
- ptlrpc_request_free(req);
- return rc;
- }
-
- mdc_pack_body(req, NULL, 0, 0, -1, 0);
-
- /* Copy hsm_request struct */
- req_hr = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_REQUEST);
- if (!req_hr) {
- rc = -EPROTO;
- goto out;
- }
- *req_hr = hur->hur_request;
-
- /* Copy hsm_user_item structs */
- req_hui = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_USER_ITEM);
- if (!req_hui) {
- rc = -EPROTO;
- goto out;
- }
- memcpy(req_hui, hur->hur_user_item,
- hur->hur_request.hr_itemcount * sizeof(struct hsm_user_item));
-
- /* Copy opaque field */
- req_opaque = req_capsule_client_get(&req->rq_pill, &RMF_GENERIC_DATA);
- if (!req_opaque) {
- rc = -EPROTO;
- goto out;
- }
- memcpy(req_opaque, hur_data(hur), hur->hur_request.hr_data_len);
-
- ptlrpc_request_set_replen(req);
-
- mdc_get_mod_rpc_slot(req, NULL);
- rc = ptlrpc_queue_wait(req);
- mdc_put_mod_rpc_slot(req, NULL);
-out:
- ptlrpc_req_finished(req);
- return rc;
-}
-
-static struct kuc_hdr *changelog_kuc_hdr(char *buf, size_t len, u32 flags)
-{
- struct kuc_hdr *lh = (struct kuc_hdr *)buf;
-
- LASSERT(len <= KUC_CHANGELOG_MSG_MAXSIZE);
-
- lh->kuc_magic = KUC_MAGIC;
- lh->kuc_transport = KUC_TRANSPORT_CHANGELOG;
- lh->kuc_flags = flags;
- lh->kuc_msgtype = CL_RECORD;
- lh->kuc_msglen = len;
- return lh;
-}
-
-struct changelog_show {
- __u64 cs_startrec;
- enum changelog_send_flag cs_flags;
- struct file *cs_fp;
- char *cs_buf;
- struct obd_device *cs_obd;
-};
-
-static inline char *cs_obd_name(struct changelog_show *cs)
-{
- return cs->cs_obd->obd_name;
-}
-
-static int changelog_kkuc_cb(const struct lu_env *env, struct llog_handle *llh,
- struct llog_rec_hdr *hdr, void *data)
-{
- struct changelog_show *cs = data;
- struct llog_changelog_rec *rec = (struct llog_changelog_rec *)hdr;
- struct kuc_hdr *lh;
- size_t len;
- int rc;
-
- if (rec->cr_hdr.lrh_type != CHANGELOG_REC) {
- rc = -EINVAL;
- CERROR("%s: not a changelog rec %x/%d: rc = %d\n",
- cs_obd_name(cs), rec->cr_hdr.lrh_type,
- rec->cr.cr_type, rc);
- return rc;
- }
-
- if (rec->cr.cr_index < cs->cs_startrec) {
- /* Skip entries earlier than what we are interested in */
- CDEBUG(D_HSM, "rec=%llu start=%llu\n",
- rec->cr.cr_index, cs->cs_startrec);
- return 0;
- }
-
- CDEBUG(D_HSM, "%llu %02d%-5s %llu 0x%x t=" DFID " p=" DFID
- " %.*s\n", rec->cr.cr_index, rec->cr.cr_type,
- changelog_type2str(rec->cr.cr_type), rec->cr.cr_time,
- rec->cr.cr_flags & CLF_FLAGMASK,
- PFID(&rec->cr.cr_tfid), PFID(&rec->cr.cr_pfid),
- rec->cr.cr_namelen, changelog_rec_name(&rec->cr));
-
- len = sizeof(*lh) + changelog_rec_size(&rec->cr) + rec->cr.cr_namelen;
-
- /* Set up the message */
- lh = changelog_kuc_hdr(cs->cs_buf, len, cs->cs_flags);
- memcpy(lh + 1, &rec->cr, len - sizeof(*lh));
-
- rc = libcfs_kkuc_msg_put(cs->cs_fp, lh);
- CDEBUG(D_HSM, "kucmsg fp %p len %zu rc %d\n", cs->cs_fp, len, rc);
-
- return rc;
-}
-
-static int mdc_changelog_send_thread(void *csdata)
-{
- enum llog_flag flags = LLOG_F_IS_CAT;
- struct changelog_show *cs = csdata;
- struct llog_ctxt *ctxt = NULL;
- struct llog_handle *llh = NULL;
- struct kuc_hdr *kuch;
- int rc;
-
- CDEBUG(D_HSM, "changelog to fp=%p start %llu\n",
- cs->cs_fp, cs->cs_startrec);
-
- cs->cs_buf = kzalloc(KUC_CHANGELOG_MSG_MAXSIZE, GFP_NOFS);
- if (!cs->cs_buf) {
- rc = -ENOMEM;
- goto out;
- }
-
- /* Set up the remote catalog handle */
- ctxt = llog_get_context(cs->cs_obd, LLOG_CHANGELOG_REPL_CTXT);
- if (!ctxt) {
- rc = -ENOENT;
- goto out;
- }
- rc = llog_open(NULL, ctxt, &llh, NULL, CHANGELOG_CATALOG,
- LLOG_OPEN_EXISTS);
- if (rc) {
- CERROR("%s: fail to open changelog catalog: rc = %d\n",
- cs_obd_name(cs), rc);
- goto out;
- }
-
- if (cs->cs_flags & CHANGELOG_FLAG_JOBID)
- flags |= LLOG_F_EXT_JOBID;
-
- rc = llog_init_handle(NULL, llh, flags, NULL);
- if (rc) {
- CERROR("llog_init_handle failed %d\n", rc);
- goto out;
- }
-
- rc = llog_cat_process(NULL, llh, changelog_kkuc_cb, cs, 0, 0);
-
- /* Send EOF no matter what our result */
- kuch = changelog_kuc_hdr(cs->cs_buf, sizeof(*kuch), cs->cs_flags);
- kuch->kuc_msgtype = CL_EOF;
- libcfs_kkuc_msg_put(cs->cs_fp, kuch);
-
-out:
- fput(cs->cs_fp);
- if (llh)
- llog_cat_close(NULL, llh);
- if (ctxt)
- llog_ctxt_put(ctxt);
- kfree(cs->cs_buf);
- kfree(cs);
- return rc;
-}
-
-static int mdc_ioc_changelog_send(struct obd_device *obd,
- struct ioc_changelog *icc)
-{
- struct changelog_show *cs;
- struct task_struct *task;
- int rc;
-
- /* Freed in mdc_changelog_send_thread */
- cs = kzalloc(sizeof(*cs), GFP_NOFS);
- if (!cs)
- return -ENOMEM;
-
- cs->cs_obd = obd;
- cs->cs_startrec = icc->icc_recno;
- /* matching fput in mdc_changelog_send_thread */
- cs->cs_fp = fget(icc->icc_id);
- cs->cs_flags = icc->icc_flags;
-
- /*
- * New thread because we should return to user app before
- * writing into our pipe
- */
- task = kthread_run(mdc_changelog_send_thread, cs,
- "mdc_clg_send_thread");
- if (IS_ERR(task)) {
- rc = PTR_ERR(task);
- CERROR("%s: can't start changelog thread: rc = %d\n",
- cs_obd_name(cs), rc);
- kfree(cs);
- } else {
- rc = 0;
- CDEBUG(D_HSM, "%s: started changelog thread\n",
- cs_obd_name(cs));
- }
-
- CERROR("Failed to start changelog thread: %d\n", rc);
- return rc;
-}
-
-static int mdc_ioc_hsm_ct_start(struct obd_export *exp,
- struct lustre_kernelcomm *lk);
-
-static int mdc_quotactl(struct obd_device *unused, struct obd_export *exp,
- struct obd_quotactl *oqctl)
-{
- struct ptlrpc_request *req;
- struct obd_quotactl *oqc;
- int rc;
-
- req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
- &RQF_MDS_QUOTACTL, LUSTRE_MDS_VERSION,
- MDS_QUOTACTL);
- if (!req)
- return -ENOMEM;
-
- oqc = req_capsule_client_get(&req->rq_pill, &RMF_OBD_QUOTACTL);
- *oqc = *oqctl;
-
- ptlrpc_request_set_replen(req);
- ptlrpc_at_set_req_timeout(req);
- req->rq_no_resend = 1;
-
- rc = ptlrpc_queue_wait(req);
- if (rc)
- CERROR("ptlrpc_queue_wait failed, rc: %d\n", rc);
-
- if (req->rq_repmsg) {
- oqc = req_capsule_server_get(&req->rq_pill, &RMF_OBD_QUOTACTL);
- if (oqc) {
- *oqctl = *oqc;
- } else if (!rc) {
- CERROR("Can't unpack obd_quotactl\n");
- rc = -EPROTO;
- }
- } else if (!rc) {
- CERROR("Can't unpack obd_quotactl\n");
- rc = -EPROTO;
- }
- ptlrpc_req_finished(req);
-
- return rc;
-}
-
-static int mdc_ioc_swap_layouts(struct obd_export *exp,
- struct md_op_data *op_data)
-{
- LIST_HEAD(cancels);
- struct ptlrpc_request *req;
- int rc, count;
- struct mdc_swap_layouts *msl, *payload;
-
- msl = op_data->op_data;
-
- /* When the MDT will get the MDS_SWAP_LAYOUTS RPC the
- * first thing it will do is to cancel the 2 layout
- * locks hold by this client.
- * So the client must cancel its layout locks on the 2 fids
- * with the request RPC to avoid extra RPC round trips
- */
- count = mdc_resource_get_unused(exp, &op_data->op_fid1, &cancels,
- LCK_CR, MDS_INODELOCK_LAYOUT |
- MDS_INODELOCK_XATTR);
- count += mdc_resource_get_unused(exp, &op_data->op_fid2, &cancels,
- LCK_CR, MDS_INODELOCK_LAYOUT |
- MDS_INODELOCK_XATTR);
-
- req = ptlrpc_request_alloc(class_exp2cliimp(exp),
- &RQF_MDS_SWAP_LAYOUTS);
- if (!req) {
- ldlm_lock_list_put(&cancels, l_bl_ast, count);
- return -ENOMEM;
- }
-
- rc = mdc_prep_elc_req(exp, req, MDS_SWAP_LAYOUTS, &cancels, count);
- if (rc) {
- ptlrpc_request_free(req);
- return rc;
- }
-
- mdc_swap_layouts_pack(req, op_data);
-
- payload = req_capsule_client_get(&req->rq_pill, &RMF_SWAP_LAYOUTS);
- LASSERT(payload);
-
- *payload = *msl;
-
- ptlrpc_request_set_replen(req);
-
- rc = ptlrpc_queue_wait(req);
-
- ptlrpc_req_finished(req);
- return rc;
-}
-
-static int mdc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
- void *karg, void __user *uarg)
-{
- struct obd_device *obd = exp->exp_obd;
- struct obd_ioctl_data *data = karg;
- struct obd_import *imp = obd->u.cli.cl_import;
- int rc;
-
- if (!try_module_get(THIS_MODULE)) {
- CERROR("%s: cannot get module '%s'\n", obd->obd_name,
- module_name(THIS_MODULE));
- return -EINVAL;
- }
- switch (cmd) {
- case OBD_IOC_CHANGELOG_SEND:
- rc = mdc_ioc_changelog_send(obd, karg);
- goto out;
- case OBD_IOC_CHANGELOG_CLEAR: {
- struct ioc_changelog *icc = karg;
- struct changelog_setinfo cs = {
- .cs_recno = icc->icc_recno,
- .cs_id = icc->icc_id
- };
-
- rc = obd_set_info_async(NULL, exp, strlen(KEY_CHANGELOG_CLEAR),
- KEY_CHANGELOG_CLEAR, sizeof(cs), &cs,
- NULL);
- goto out;
- }
- case OBD_IOC_FID2PATH:
- rc = mdc_ioc_fid2path(exp, karg);
- goto out;
- case LL_IOC_HSM_CT_START:
- rc = mdc_ioc_hsm_ct_start(exp, karg);
- /* ignore if it was already registered on this MDS. */
- if (rc == -EEXIST)
- rc = 0;
- goto out;
- case LL_IOC_HSM_PROGRESS:
- rc = mdc_ioc_hsm_progress(exp, karg);
- goto out;
- case LL_IOC_HSM_STATE_GET:
- rc = mdc_ioc_hsm_state_get(exp, karg);
- goto out;
- case LL_IOC_HSM_STATE_SET:
- rc = mdc_ioc_hsm_state_set(exp, karg);
- goto out;
- case LL_IOC_HSM_ACTION:
- rc = mdc_ioc_hsm_current_action(exp, karg);
- goto out;
- case LL_IOC_HSM_REQUEST:
- rc = mdc_ioc_hsm_request(exp, karg);
- goto out;
- case OBD_IOC_CLIENT_RECOVER:
- rc = ptlrpc_recover_import(imp, data->ioc_inlbuf1, 0);
- if (rc < 0)
- goto out;
- rc = 0;
- goto out;
- case IOC_OSC_SET_ACTIVE:
- rc = ptlrpc_set_import_active(imp, data->ioc_offset);
- goto out;
- case OBD_IOC_PING_TARGET:
- rc = ptlrpc_obd_ping(obd);
- goto out;
- /*
- * Normally IOC_OBD_STATFS, OBD_IOC_QUOTACTL iocontrol are handled by
- * LMV instead of MDC. But when the cluster is upgraded from 1.8,
- * there'd be no LMV layer thus we might be called here. Eventually
- * this code should be removed.
- * bz20731, LU-592.
- */
- case IOC_OBD_STATFS: {
- struct obd_statfs stat_buf = {0};
-
- if (*((__u32 *)data->ioc_inlbuf2) != 0) {
- rc = -ENODEV;
- goto out;
- }
-
- /* copy UUID */
- if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(obd),
- min_t(size_t, data->ioc_plen2,
- sizeof(struct obd_uuid)))) {
- rc = -EFAULT;
- goto out;
- }
-
- rc = mdc_statfs(NULL, obd->obd_self_export, &stat_buf,
- cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
- 0);
- if (rc != 0)
- goto out;
-
- if (copy_to_user(data->ioc_pbuf1, &stat_buf,
- min_t(size_t, data->ioc_plen1,
- sizeof(stat_buf)))) {
- rc = -EFAULT;
- goto out;
- }
-
- rc = 0;
- goto out;
- }
- case OBD_IOC_QUOTACTL: {
- struct if_quotactl *qctl = karg;
- struct obd_quotactl *oqctl;
-
- oqctl = kzalloc(sizeof(*oqctl), GFP_NOFS);
- if (!oqctl) {
- rc = -ENOMEM;
- goto out;
- }
-
- QCTL_COPY(oqctl, qctl);
- rc = obd_quotactl(exp, oqctl);
- if (rc == 0) {
- QCTL_COPY(qctl, oqctl);
- qctl->qc_valid = QC_MDTIDX;
- qctl->obd_uuid = obd->u.cli.cl_target_uuid;
- }
-
- kfree(oqctl);
- goto out;
- }
- case LL_IOC_GET_CONNECT_FLAGS:
- if (copy_to_user(uarg, exp_connect_flags_ptr(exp),
- sizeof(*exp_connect_flags_ptr(exp)))) {
- rc = -EFAULT;
- goto out;
- }
-
- rc = 0;
- goto out;
- case LL_IOC_LOV_SWAP_LAYOUTS:
- rc = mdc_ioc_swap_layouts(exp, karg);
- goto out;
- default:
- CERROR("unrecognised ioctl: cmd = %#x\n", cmd);
- rc = -ENOTTY;
- goto out;
- }
-out:
- module_put(THIS_MODULE);
-
- return rc;
-}
-
-static int mdc_get_info_rpc(struct obd_export *exp,
- u32 keylen, void *key,
- int vallen, void *val)
-{
- struct obd_import *imp = class_exp2cliimp(exp);
- struct ptlrpc_request *req;
- char *tmp;
- int rc = -EINVAL;
-
- req = ptlrpc_request_alloc(imp, &RQF_MDS_GET_INFO);
- if (!req)
- return -ENOMEM;
-
- req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_KEY,
- RCL_CLIENT, keylen);
- req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VALLEN,
- RCL_CLIENT, sizeof(__u32));
-
- rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GET_INFO);
- if (rc) {
- ptlrpc_request_free(req);
- return rc;
- }
-
- tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_KEY);
- memcpy(tmp, key, keylen);
- tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_VALLEN);
- memcpy(tmp, &vallen, sizeof(__u32));
-
- req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VAL,
- RCL_SERVER, vallen);
- ptlrpc_request_set_replen(req);
-
- rc = ptlrpc_queue_wait(req);
- /* -EREMOTE means the get_info result is partial, and it needs to
- * continue on another MDT, see fid2path part in lmv_iocontrol
- */
- if (rc == 0 || rc == -EREMOTE) {
- tmp = req_capsule_server_get(&req->rq_pill, &RMF_GETINFO_VAL);
- memcpy(val, tmp, vallen);
- if (ptlrpc_rep_need_swab(req)) {
- if (KEY_IS(KEY_FID2PATH))
- lustre_swab_fid2path(val);
- }
- }
- ptlrpc_req_finished(req);
-
- return rc;
-}
-
-static void lustre_swab_hai(struct hsm_action_item *h)
-{
- __swab32s(&h->hai_len);
- __swab32s(&h->hai_action);
- lustre_swab_lu_fid(&h->hai_fid);
- lustre_swab_lu_fid(&h->hai_dfid);
- __swab64s(&h->hai_cookie);
- __swab64s(&h->hai_extent.offset);
- __swab64s(&h->hai_extent.length);
- __swab64s(&h->hai_gid);
-}
-
-static void lustre_swab_hal(struct hsm_action_list *h)
-{
- struct hsm_action_item *hai;
- u32 i;
-
- __swab32s(&h->hal_version);
- __swab32s(&h->hal_count);
- __swab32s(&h->hal_archive_id);
- __swab64s(&h->hal_flags);
- hai = hai_first(h);
- for (i = 0; i < h->hal_count; i++, hai = hai_next(hai))
- lustre_swab_hai(hai);
-}
-
-static void lustre_swab_kuch(struct kuc_hdr *l)
-{
- __swab16s(&l->kuc_magic);
- /* __u8 l->kuc_transport */
- __swab16s(&l->kuc_msgtype);
- __swab16s(&l->kuc_msglen);
-}
-
-static int mdc_ioc_hsm_ct_start(struct obd_export *exp,
- struct lustre_kernelcomm *lk)
-{
- struct obd_import *imp = class_exp2cliimp(exp);
- __u32 archive = lk->lk_data;
- int rc = 0;
-
- if (lk->lk_group != KUC_GRP_HSM) {
- CERROR("Bad copytool group %d\n", lk->lk_group);
- return -EINVAL;
- }
-
- CDEBUG(D_HSM, "CT start r%d w%d u%d g%d f%#x\n", lk->lk_rfd, lk->lk_wfd,
- lk->lk_uid, lk->lk_group, lk->lk_flags);
-
- if (lk->lk_flags & LK_FLG_STOP) {
- /* Unregister with the coordinator */
- rc = mdc_ioc_hsm_ct_unregister(imp);
- } else {
- rc = mdc_ioc_hsm_ct_register(imp, archive);
- }
-
- return rc;
-}
-
-/**
- * Send a message to any listening copytools
- * @param val KUC message (kuc_hdr + hsm_action_list)
- * @param len total length of message
- */
-static int mdc_hsm_copytool_send(size_t len, void *val)
-{
- struct kuc_hdr *lh = (struct kuc_hdr *)val;
- struct hsm_action_list *hal = (struct hsm_action_list *)(lh + 1);
-
- if (len < sizeof(*lh) + sizeof(*hal)) {
- CERROR("Short HSM message %zu < %zu\n", len,
- sizeof(*lh) + sizeof(*hal));
- return -EPROTO;
- }
- if (lh->kuc_magic == __swab16(KUC_MAGIC)) {
- lustre_swab_kuch(lh);
- lustre_swab_hal(hal);
- } else if (lh->kuc_magic != KUC_MAGIC) {
- CERROR("Bad magic %x!=%x\n", lh->kuc_magic, KUC_MAGIC);
- return -EPROTO;
- }
-
- CDEBUG(D_HSM,
- "Received message mg=%x t=%d m=%d l=%d actions=%d on %s\n",
- lh->kuc_magic, lh->kuc_transport, lh->kuc_msgtype,
- lh->kuc_msglen, hal->hal_count, hal->hal_fsname);
-
- /* Broadcast to HSM listeners */
- return libcfs_kkuc_group_put(KUC_GRP_HSM, lh);
-}
-
-/**
- * callback function passed to kuc for re-registering each HSM copytool
- * running on MDC, after MDT shutdown/recovery.
- * @param data copytool registration data
- * @param cb_arg callback argument (obd_import)
- */
-static int mdc_hsm_ct_reregister(void *data, void *cb_arg)
-{
- struct kkuc_ct_data *kcd = data;
- struct obd_import *imp = (struct obd_import *)cb_arg;
- int rc;
-
- if (!kcd || kcd->kcd_magic != KKUC_CT_DATA_MAGIC)
- return -EPROTO;
-
- if (!obd_uuid_equals(&kcd->kcd_uuid, &imp->imp_obd->obd_uuid))
- return 0;
-
- CDEBUG(D_HA, "%s: recover copytool registration to MDT (archive=%#x)\n",
- imp->imp_obd->obd_name, kcd->kcd_archive);
- rc = mdc_ioc_hsm_ct_register(imp, kcd->kcd_archive);
-
- /* ignore error if the copytool is already registered */
- return (rc == -EEXIST) ? 0 : rc;
-}
-
-static int mdc_set_info_async(const struct lu_env *env,
- struct obd_export *exp,
- u32 keylen, void *key,
- u32 vallen, void *val,
- struct ptlrpc_request_set *set)
-{
- struct obd_import *imp = class_exp2cliimp(exp);
- int rc;
-
- if (KEY_IS(KEY_READ_ONLY)) {
- if (vallen != sizeof(int))
- return -EINVAL;
-
- spin_lock(&imp->imp_lock);
- if (*((int *)val)) {
- imp->imp_connect_flags_orig |= OBD_CONNECT_RDONLY;
- imp->imp_connect_data.ocd_connect_flags |=
- OBD_CONNECT_RDONLY;
- } else {
- imp->imp_connect_flags_orig &= ~OBD_CONNECT_RDONLY;
- imp->imp_connect_data.ocd_connect_flags &=
- ~OBD_CONNECT_RDONLY;
- }
- spin_unlock(&imp->imp_lock);
-
- return do_set_info_async(imp, MDS_SET_INFO, LUSTRE_MDS_VERSION,
- keylen, key, vallen, val, set);
- }
- if (KEY_IS(KEY_SPTLRPC_CONF)) {
- sptlrpc_conf_client_adapt(exp->exp_obd);
- return 0;
- }
- if (KEY_IS(KEY_FLUSH_CTX)) {
- sptlrpc_import_flush_my_ctx(imp);
- return 0;
- }
- if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
- rc = do_set_info_async(imp, MDS_SET_INFO, LUSTRE_MDS_VERSION,
- keylen, key, vallen, val, set);
- return rc;
- }
- if (KEY_IS(KEY_HSM_COPYTOOL_SEND)) {
- rc = mdc_hsm_copytool_send(vallen, val);
- return rc;
- }
- if (KEY_IS(KEY_DEFAULT_EASIZE)) {
- u32 *default_easize = val;
-
- exp->exp_obd->u.cli.cl_default_mds_easize = *default_easize;
- return 0;
- }
-
- CERROR("Unknown key %s\n", (char *)key);
- return -EINVAL;
-}
-
-static int mdc_get_info(const struct lu_env *env, struct obd_export *exp,
- __u32 keylen, void *key, __u32 *vallen, void *val)
-{
- int rc = -EINVAL;
-
- if (KEY_IS(KEY_MAX_EASIZE)) {
- u32 mdsize, *max_easize;
-
- if (*vallen != sizeof(int))
- return -EINVAL;
- mdsize = *(u32 *)val;
- if (mdsize > exp->exp_obd->u.cli.cl_max_mds_easize)
- exp->exp_obd->u.cli.cl_max_mds_easize = mdsize;
- max_easize = val;
- *max_easize = exp->exp_obd->u.cli.cl_max_mds_easize;
- return 0;
- } else if (KEY_IS(KEY_DEFAULT_EASIZE)) {
- u32 *default_easize;
-
- if (*vallen != sizeof(int))
- return -EINVAL;
- default_easize = val;
- *default_easize = exp->exp_obd->u.cli.cl_default_mds_easize;
- return 0;
- } else if (KEY_IS(KEY_CONN_DATA)) {
- struct obd_import *imp = class_exp2cliimp(exp);
- struct obd_connect_data *data = val;
-
- if (*vallen != sizeof(*data))
- return -EINVAL;
-
- *data = imp->imp_connect_data;
- return 0;
- } else if (KEY_IS(KEY_TGT_COUNT)) {
- *((u32 *)val) = 1;
- return 0;
- }
-
- rc = mdc_get_info_rpc(exp, keylen, key, *vallen, val);
-
- return rc;
-}
-
-static int mdc_sync(struct obd_export *exp, const struct lu_fid *fid,
- struct ptlrpc_request **request)
-{
- struct ptlrpc_request *req;
- int rc;
-
- *request = NULL;
- req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_SYNC);
- if (!req)
- return -ENOMEM;
-
- rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_SYNC);
- if (rc) {
- ptlrpc_request_free(req);
- return rc;
- }
-
- mdc_pack_body(req, fid, 0, 0, -1, 0);
-
- ptlrpc_request_set_replen(req);
-
- rc = ptlrpc_queue_wait(req);
- if (rc)
- ptlrpc_req_finished(req);
- else
- *request = req;
- return rc;
-}
-
-static int mdc_import_event(struct obd_device *obd, struct obd_import *imp,
- enum obd_import_event event)
-{
- int rc = 0;
-
- LASSERT(imp->imp_obd == obd);
-
- switch (event) {
- case IMP_EVENT_INACTIVE: {
- struct client_obd *cli = &obd->u.cli;
- /*
- * Flush current sequence to make client obtain new one
- * from server in case of disconnect/reconnect.
- */
- if (cli->cl_seq)
- seq_client_flush(cli->cl_seq);
-
- rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE, NULL);
- break;
- }
- case IMP_EVENT_INVALIDATE: {
- struct ldlm_namespace *ns = obd->obd_namespace;
-
- ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
-
- break;
- }
- case IMP_EVENT_ACTIVE:
- rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE, NULL);
- /* redo the kuc registration after reconnecting */
- if (rc == 0)
- /* re-register HSM agents */
- rc = libcfs_kkuc_group_foreach(KUC_GRP_HSM,
- mdc_hsm_ct_reregister,
- (void *)imp);
- break;
- case IMP_EVENT_OCD:
- rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD, NULL);
- break;
- case IMP_EVENT_DISCON:
- case IMP_EVENT_DEACTIVATE:
- case IMP_EVENT_ACTIVATE:
- break;
- default:
- CERROR("Unknown import event %x\n", event);
- LBUG();
- }
- return rc;
-}
-
-int mdc_fid_alloc(const struct lu_env *env, struct obd_export *exp,
- struct lu_fid *fid, struct md_op_data *op_data)
-{
- struct client_obd *cli = &exp->exp_obd->u.cli;
- struct lu_client_seq *seq = cli->cl_seq;
-
- return seq_client_alloc_fid(env, seq, fid);
-}
-
-static struct obd_uuid *mdc_get_uuid(struct obd_export *exp)
-{
- struct client_obd *cli = &exp->exp_obd->u.cli;
-
- return &cli->cl_target_uuid;
-}
-
-/**
- * Determine whether the lock can be canceled before replaying it during
- * recovery, non zero value will be return if the lock can be canceled,
- * or zero returned for not
- */
-static int mdc_cancel_weight(struct ldlm_lock *lock)
-{
- if (lock->l_resource->lr_type != LDLM_IBITS)
- return 0;
-
- /* FIXME: if we ever get into a situation where there are too many
- * opened files with open locks on a single node, then we really
- * should replay these open locks to reget it
- */
- if (lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_OPEN)
- return 0;
-
- return 1;
-}
-
-static int mdc_resource_inode_free(struct ldlm_resource *res)
-{
- if (res->lr_lvb_inode)
- res->lr_lvb_inode = NULL;
-
- return 0;
-}
-
-static struct ldlm_valblock_ops inode_lvbo = {
- .lvbo_free = mdc_resource_inode_free,
-};
-
-static int mdc_llog_init(struct obd_device *obd)
-{
- struct obd_llog_group *olg = &obd->obd_olg;
- struct llog_ctxt *ctxt;
- int rc;
-
- rc = llog_setup(NULL, obd, olg, LLOG_CHANGELOG_REPL_CTXT, obd,
- &llog_client_ops);
- if (rc)
- return rc;
-
- ctxt = llog_group_get_ctxt(olg, LLOG_CHANGELOG_REPL_CTXT);
- llog_initiator_connect(ctxt);
- llog_ctxt_put(ctxt);
-
- return 0;
-}
-
-static void mdc_llog_finish(struct obd_device *obd)
-{
- struct llog_ctxt *ctxt;
-
- ctxt = llog_get_context(obd, LLOG_CHANGELOG_REPL_CTXT);
- if (ctxt)
- llog_cleanup(NULL, ctxt);
-}
-
-static int mdc_setup(struct obd_device *obd, struct lustre_cfg *cfg)
-{
- struct lprocfs_static_vars lvars = { NULL };
- int rc;
-
- rc = ptlrpcd_addref();
- if (rc < 0)
- return rc;
-
- rc = client_obd_setup(obd, cfg);
- if (rc)
- goto err_ptlrpcd_decref;
-
- lprocfs_mdc_init_vars(&lvars);
- lprocfs_obd_setup(obd, lvars.obd_vars, lvars.sysfs_vars);
- sptlrpc_lprocfs_cliobd_attach(obd);
- ptlrpc_lprocfs_register_obd(obd);
-
- ns_register_cancel(obd->obd_namespace, mdc_cancel_weight);
-
- obd->obd_namespace->ns_lvbo = &inode_lvbo;
-
- rc = mdc_llog_init(obd);
- if (rc) {
- mdc_cleanup(obd);
- CERROR("failed to setup llogging subsystems\n");
- return rc;
- }
-
- return rc;
-
-err_ptlrpcd_decref:
- ptlrpcd_decref();
- return rc;
-}
-
-/* Initialize the default and maximum LOV EA sizes. This allows
- * us to make MDS RPCs with large enough reply buffers to hold a default
- * sized EA without having to calculate this (via a call into the
- * LOV + OSCs) each time we make an RPC. The maximum size is also tracked
- * but not used to avoid wastefully vmalloc()'ing large reply buffers when
- * a large number of stripes is possible. If a larger reply buffer is
- * required it will be reallocated in the ptlrpc layer due to overflow.
- */
-static int mdc_init_ea_size(struct obd_export *exp, u32 easize, u32 def_easize)
-{
- struct obd_device *obd = exp->exp_obd;
- struct client_obd *cli = &obd->u.cli;
-
- if (cli->cl_max_mds_easize < easize)
- cli->cl_max_mds_easize = easize;
-
- if (cli->cl_default_mds_easize < def_easize)
- cli->cl_default_mds_easize = def_easize;
-
- return 0;
-}
-
-static int mdc_precleanup(struct obd_device *obd)
-{
- /* Failsafe, ok if racy */
- if (obd->obd_type->typ_refcnt <= 1)
- libcfs_kkuc_group_rem(0, KUC_GRP_HSM);
-
- obd_cleanup_client_import(obd);
- ptlrpc_lprocfs_unregister_obd(obd);
- lprocfs_obd_cleanup(obd);
- mdc_llog_finish(obd);
- return 0;
-}
-
-static int mdc_cleanup(struct obd_device *obd)
-{
- ptlrpcd_decref();
-
- return client_obd_cleanup(obd);
-}
-
-static int mdc_process_config(struct obd_device *obd, u32 len, void *buf)
-{
- struct lustre_cfg *lcfg = buf;
- struct lprocfs_static_vars lvars = { NULL };
- int rc = 0;
-
- lprocfs_mdc_init_vars(&lvars);
- switch (lcfg->lcfg_command) {
- default:
- rc = class_process_proc_param(PARAM_MDC, lvars.obd_vars,
- lcfg, obd);
- if (rc > 0)
- rc = 0;
- break;
- }
- return rc;
-}
-
-static struct obd_ops mdc_obd_ops = {
- .owner = THIS_MODULE,
- .setup = mdc_setup,
- .precleanup = mdc_precleanup,
- .cleanup = mdc_cleanup,
- .add_conn = client_import_add_conn,
- .del_conn = client_import_del_conn,
- .connect = client_connect_import,
- .disconnect = client_disconnect_export,
- .iocontrol = mdc_iocontrol,
- .set_info_async = mdc_set_info_async,
- .statfs = mdc_statfs,
- .fid_init = client_fid_init,
- .fid_fini = client_fid_fini,
- .fid_alloc = mdc_fid_alloc,
- .import_event = mdc_import_event,
- .get_info = mdc_get_info,
- .process_config = mdc_process_config,
- .get_uuid = mdc_get_uuid,
- .quotactl = mdc_quotactl,
-};
-
-static struct md_ops mdc_md_ops = {
- .getstatus = mdc_getstatus,
- .null_inode = mdc_null_inode,
- .close = mdc_close,
- .create = mdc_create,
- .enqueue = mdc_enqueue,
- .getattr = mdc_getattr,
- .getattr_name = mdc_getattr_name,
- .intent_lock = mdc_intent_lock,
- .link = mdc_link,
- .rename = mdc_rename,
- .setattr = mdc_setattr,
- .setxattr = mdc_setxattr,
- .getxattr = mdc_getxattr,
- .sync = mdc_sync,
- .read_page = mdc_read_page,
- .unlink = mdc_unlink,
- .cancel_unused = mdc_cancel_unused,
- .init_ea_size = mdc_init_ea_size,
- .set_lock_data = mdc_set_lock_data,
- .lock_match = mdc_lock_match,
- .get_lustre_md = mdc_get_lustre_md,
- .free_lustre_md = mdc_free_lustre_md,
- .set_open_replay_data = mdc_set_open_replay_data,
- .clear_open_replay_data = mdc_clear_open_replay_data,
- .intent_getattr_async = mdc_intent_getattr_async,
- .revalidate_lock = mdc_revalidate_lock
-};
-
-static int __init mdc_init(void)
-{
- struct lprocfs_static_vars lvars = { NULL };
-
- lprocfs_mdc_init_vars(&lvars);
-
- return class_register_type(&mdc_obd_ops, &mdc_md_ops,
- LUSTRE_MDC_NAME, NULL);
-}
-
-static void /*__exit*/ mdc_exit(void)
-{
- class_unregister_type(LUSTRE_MDC_NAME);
-}
-
-MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
-MODULE_DESCRIPTION("Lustre Metadata Client");
-MODULE_VERSION(LUSTRE_VERSION_STRING);
-MODULE_LICENSE("GPL");
-
-module_init(mdc_init);
-module_exit(mdc_exit);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.