Viewing: mdt_open.c
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
* Copyright (c) 2011, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
*
* Lustre Metadata Target (mdt) open/close file handling
*
* Author: Huang Hua <huanghua@clusterfs.com>
*/
#define DEBUG_SUBSYSTEM S_MDS
#include <lustre_acl.h>
#include <lustre_mds.h>
#include <lustre_swab.h>
#include "mdt_internal.h"
#include <lustre_nodemap.h>
static const char mfd_open_handle_owner[] = "mdt";
static int mdt_open_by_fid(struct mdt_thread_info *info, struct ldlm_reply *rep,
struct mdt_lock_handle *lhc);
static void mdt_pack_attr_acl(struct mdt_thread_info *info,
struct mdt_object *o);
/* Create a new mdt_file_data struct, initialize it,
* and insert it to global hash table */
struct mdt_file_data *mdt_mfd_new(const struct mdt_export_data *med)
{
struct mdt_file_data *mfd;
ENTRY;
OBD_ALLOC_PTR(mfd);
if (mfd != NULL) {
refcount_set(&mfd->mfd_open_handle.h_ref, 1);
INIT_HLIST_NODE(&mfd->mfd_open_handle.h_link);
mfd->mfd_owner = med;
INIT_LIST_HEAD(&mfd->mfd_list);
class_handle_hash(&mfd->mfd_open_handle, mfd_open_handle_owner);
}
RETURN(mfd);
}
/*
* Find the mfd pointed to by handle in global hash table.
* In case of replay the handle is obsoleted
* but mfd can be found in mfd list by that handle.
* Callers need to be holding med_open_lock.
*/
struct mdt_file_data *mdt_open_handle2mfd(struct mdt_export_data *med,
const struct lustre_handle *open_handle,
bool is_replay_or_resent)
{
struct mdt_file_data *mfd;
ENTRY;
LASSERT(open_handle != NULL);
mfd = class_handle2object(open_handle->cookie, mfd_open_handle_owner);
if (mfd)
refcount_dec(&mfd->mfd_open_handle.h_ref);
/* during dw/setattr replay the mfd can be found by old handle */
if ((!mfd || mfd->mfd_owner != med) && is_replay_or_resent) {
list_for_each_entry(mfd, &med->med_open_head, mfd_list) {
if (mfd->mfd_open_handle_old.cookie ==
open_handle->cookie)
RETURN(mfd);
}
mfd = NULL;
}
RETURN(mfd);
}
/* free mfd */
void mdt_mfd_free(struct mdt_file_data *mfd)
{
LASSERT(refcount_read(&mfd->mfd_open_handle.h_ref) == 1);
LASSERT(list_empty(&mfd->mfd_list));
OBD_FREE_RCU(mfd, sizeof(*mfd), mfd_open_handle.h_rcu);
}
static int mdt_create_data(struct mdt_thread_info *info,
struct mdt_object *p, struct mdt_object *o)
{
struct md_op_spec *spec = &info->mti_spec;
struct md_attr *ma = &info->mti_attr;
int rc = 0;
ENTRY;
if (!md_should_create(spec->sp_cr_flags))
RETURN(0);
ma->ma_need = MA_INODE | MA_LOV;
ma->ma_valid = 0;
mutex_lock(&o->mot_lov_mutex);
if (!o->mot_lov_created) {
rc = mdo_create_data(info->mti_env,
p ? mdt_object_child(p) : NULL,
mdt_object_child(o), spec, ma);
if (rc == 0)
rc = mdt_attr_get_complex(info, o, ma);
if (rc == 0 && ma->ma_valid & MA_LOV)
o->mot_lov_created = 1;
}
mutex_unlock(&o->mot_lov_mutex);
RETURN(rc);
}
int mdt_write_read(struct mdt_object *o)
{
int rc = 0;
ENTRY;
spin_lock(&o->mot_write_lock);
rc = o->mot_write_count;
spin_unlock(&o->mot_write_lock);
RETURN(rc);
}
int mdt_write_get(struct mdt_object *o)
{
int rc = 0;
ENTRY;
spin_lock(&o->mot_write_lock);
if (o->mot_write_count < 0)
rc = -ETXTBSY;
else
o->mot_write_count++;
spin_unlock(&o->mot_write_lock);
RETURN(rc);
}
void mdt_write_put(struct mdt_object *o)
{
ENTRY;
spin_lock(&o->mot_write_lock);
o->mot_write_count--;
spin_unlock(&o->mot_write_lock);
EXIT;
}
static int mdt_write_deny(struct mdt_object *o)
{
int rc = 0;
ENTRY;
spin_lock(&o->mot_write_lock);
if (o->mot_write_count > 0)
rc = -ETXTBSY;
else
o->mot_write_count--;
spin_unlock(&o->mot_write_lock);
RETURN(rc);
}
static void mdt_write_allow(struct mdt_object *o)
{
ENTRY;
spin_lock(&o->mot_write_lock);
o->mot_write_count++;
spin_unlock(&o->mot_write_lock);
EXIT;
}
/* there can be no real transaction so prepare the fake one */
static void mdt_empty_transno(struct mdt_thread_info *info, int rc)
{
struct mdt_device *mdt = info->mti_mdt;
struct ptlrpc_request *req = mdt_info_req(info);
struct tg_export_data *ted;
struct lsd_client_data *lcd;
ENTRY;
if (mdt_rdonly(req->rq_export))
RETURN_EXIT;
/* transaction has occurred already */
if (lustre_msg_get_transno(req->rq_repmsg) != 0)
RETURN_EXIT;
if (tgt_is_multimodrpcs_client(req->rq_export)) {
struct thandle *th;
/* generate an empty transaction to get a transno
* and reply data */
th = dt_trans_create(info->mti_env, mdt->mdt_bottom);
if (!IS_ERR(th)) {
rc = dt_trans_start(info->mti_env, mdt->mdt_bottom, th);
dt_trans_stop(info->mti_env, mdt->mdt_bottom, th);
}
RETURN_EXIT;
}
spin_lock(&mdt->mdt_lut.lut_translock);
if (rc != 0) {
if (info->mti_transno != 0) {
struct obd_export *exp = req->rq_export;
CERROR("%s: replay trans %llu NID %s: rc = %d\n",
mdt_obd_name(mdt), info->mti_transno,
obd_export_nid2str(exp), rc);
spin_unlock(&mdt->mdt_lut.lut_translock);
RETURN_EXIT;
}
} else if (info->mti_transno == 0) {
info->mti_transno = ++mdt->mdt_lut.lut_last_transno;
} else {
/* should be replay */
if (info->mti_transno > mdt->mdt_lut.lut_last_transno)
mdt->mdt_lut.lut_last_transno = info->mti_transno;
}
spin_unlock(&mdt->mdt_lut.lut_translock);
CDEBUG(D_INODE, "transno = %llu, last_committed = %llu\n",
info->mti_transno,
req->rq_export->exp_obd->obd_last_committed);
req->rq_transno = info->mti_transno;
lustre_msg_set_transno(req->rq_repmsg, info->mti_transno);
/* update lcd in memory only for resent cases */
ted = &req->rq_export->exp_target_data;
LASSERT(ted);
mutex_lock(&ted->ted_lcd_lock);
lcd = ted->ted_lcd;
if (info->mti_transno < lcd->lcd_last_transno &&
info->mti_transno != 0) {
/* This should happen during replay. Do not update
* last rcvd info if replay req transno < last transno,
* otherwise the following resend(after replay) can not
* be checked correctly by xid */
mutex_unlock(&ted->ted_lcd_lock);
CDEBUG(D_HA, "%s: transno = %llu < last_transno = %llu\n",
mdt_obd_name(mdt), info->mti_transno,
lcd->lcd_last_transno);
RETURN_EXIT;
}
if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE) {
if (info->mti_transno != 0)
lcd->lcd_last_close_transno = info->mti_transno;
lcd->lcd_last_close_xid = req->rq_xid;
lcd->lcd_last_close_result = rc;
} else {
/* VBR: save versions in last_rcvd for reconstruct. */
__u64 *pre_versions = lustre_msg_get_versions(req->rq_repmsg);
if (pre_versions) {
lcd->lcd_pre_versions[0] = pre_versions[0];
lcd->lcd_pre_versions[1] = pre_versions[1];
lcd->lcd_pre_versions[2] = pre_versions[2];
lcd->lcd_pre_versions[3] = pre_versions[3];
}
if (info->mti_transno != 0)
lcd->lcd_last_transno = info->mti_transno;
lcd->lcd_last_xid = req->rq_xid;
lcd->lcd_last_result = rc;
lcd->lcd_last_data = info->mti_opdata;
}
mutex_unlock(&ted->ted_lcd_lock);
EXIT;
}
/**
* mdt_mfd_set_mode() - Set MDS open flags into @mfd
* @mfd: mdt_file_data object per open handle
* @open_flags: open flags passed from client
*/
void mdt_mfd_set_mode(struct mdt_file_data *mfd, enum mds_open_flags open_flags)
{
LASSERT(mfd != NULL);
CDEBUG(D_DENTRY, DFID " Change mfd open_flags %#lo -> %#lo.\n",
PFID(mdt_object_fid(mfd->mfd_object)), mfd->mfd_open_flags,
open_flags);
mfd->mfd_open_flags = open_flags;
}
/**
* mdt_prep_ma_buf_from_rep() - prep ma_lmm/ma_lmv for md_attr from reply
* @info: Common data shared by mdt-level handlers
* @obj: metadata object
* @ma: attributes to be evaluated for that object
* @open_flags: open flags passed from client
*
* Return:
* * void
*/
void mdt_prep_ma_buf_from_rep(struct mdt_thread_info *info,
struct mdt_object *obj, struct md_attr *ma,
enum mds_open_flags open_flags)
{
struct req_capsule *pill;
if (ma->ma_lmv || ma->ma_lmm) {
CDEBUG(D_INFO, DFID " %s already set.\n",
PFID(mdt_object_fid(obj)),
ma->ma_lmv ? (ma->ma_lmm ? "ma_lmv and ma_lmm"
: "ma_lmv")
: "ma_lmm");
return;
}
pill = info->mti_pill;
if (S_ISDIR(obj->mot_header.loh_attr)) {
ma->ma_lmv = req_capsule_server_get(pill, &RMF_MDT_MD);
ma->ma_lmv_size = req_capsule_get_size(pill, &RMF_MDT_MD,
RCL_SERVER);
if (ma->ma_lmv_size > 0)
ma->ma_need |= MA_LMV;
if (open_flags & MDS_OPEN_DEFAULT_LMV) {
ma->ma_default_lmv = req_capsule_server_get(pill,
&RMF_DEFAULT_MDT_MD);
ma->ma_default_lmv_size = req_capsule_get_size(pill,
&RMF_DEFAULT_MDT_MD,
RCL_SERVER);
if (ma->ma_default_lmv_size > 0)
ma->ma_need |= MA_LMV_DEF;
}
} else {
ma->ma_lmm = req_capsule_server_get(pill, &RMF_MDT_MD);
ma->ma_lmm_size = req_capsule_get_size(pill, &RMF_MDT_MD,
RCL_SERVER);
if (ma->ma_lmm_size > 0)
ma->ma_need |= MA_LOV;
}
}
/*
* mdt_mfd_open() - open object in metadata server
*
* @info: Common data shared by mdt-level handlers
* @p: Parent mdt object
* @o: Child mdt object
* @open_flags: open flags passed from client
* @created: Object already existing/created
* @rep: ldlm_reply object
*
* Return:
* * 0 on success
* * <0 on failure
*/
static int mdt_mfd_open(struct mdt_thread_info *info, struct mdt_object *p,
struct mdt_object *o, enum mds_open_flags open_flags,
int created, struct ldlm_reply *rep)
{
struct ptlrpc_request *req = mdt_info_req(info);
struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
struct mdt_file_data *mfd;
struct md_attr *ma = &info->mti_attr;
struct lu_attr *la = &ma->ma_attr;
struct mdt_body *repbody;
bool isdir, isreg;
int rc = 0;
ENTRY;
repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
isreg = S_ISREG(la->la_mode);
isdir = S_ISDIR(la->la_mode);
if (isreg && !(ma->ma_valid & MA_LOV) &&
!(open_flags & MDS_OPEN_RELEASE)) {
/*
* No EA, check whether it is will set regEA and dirEA since in
* above attr get, these size might be zero, so reset it, to
* retrieve the MD after create obj.
*/
ma->ma_lmm_size = req_capsule_get_size(info->mti_pill,
&RMF_MDT_MD,
RCL_SERVER);
/* in replay case, p == NULL */
rc = mdt_create_data(info, p, o);
if (rc)
RETURN(rc);
if (exp_connect_flags(req->rq_export) & OBD_CONNECT_DISP_STRIPE)
mdt_set_disposition(info, rep, DISP_OPEN_STRIPE);
}
CDEBUG(D_INODE, "after open, ma_valid bit = %#llx lmm_size = %d\n",
ma->ma_valid, ma->ma_lmm_size);
if (ma->ma_valid & MA_LOV) {
LASSERT(ma->ma_lmm_size != 0);
repbody->mbo_eadatasize = ma->ma_lmm_size;
if (isdir)
repbody->mbo_valid |= OBD_MD_FLDIREA;
else
repbody->mbo_valid |= OBD_MD_FLEASIZE;
}
if (ma->ma_valid & MA_LMV) {
LASSERT(ma->ma_lmv_size != 0);
repbody->mbo_eadatasize = ma->ma_lmv_size;
LASSERT(isdir);
repbody->mbo_valid |= OBD_MD_FLDIREA | OBD_MD_MEA;
}
if (ma->ma_valid & MA_LMV_DEF) {
LASSERT(ma->ma_default_lmv_size != 0);
LASSERT(isdir);
repbody->mbo_valid |= OBD_MD_FLDIREA | OBD_MD_DEFAULT_MEA;
}
if (open_flags & MDS_FMODE_WRITE)
rc = mdt_write_get(o);
else if (open_flags & MDS_FMODE_EXEC)
rc = mdt_write_deny(o);
if (rc)
RETURN(rc);
rc = mo_open(info->mti_env, mdt_object_child(o),
created ? open_flags | MDS_OPEN_CREATED : open_flags,
&info->mti_spec);
if (rc != 0) {
/* If we allow the client to chgrp (CFS_SETGRP_PERM), but the
* client does not know which suppgid should be sent to the MDS,
* or some other(s) changed the target file's GID after this RPC
* sent to the MDS with the suppgid as the original GID, then we
* give the client another chance to send the right suppgid. */
if (rc == -EACCES &&
allow_client_chgrp(info, lu_ucred(info->mti_env)))
mdt_set_disposition(info, rep, DISP_OPEN_DENY);
GOTO(err_out, rc);
}
mfd = mdt_mfd_new(med);
if (mfd == NULL)
GOTO(err_out, rc = -ENOMEM);
/*
* Keep a reference on this object for this open, and is
* released by mdt_mfd_close().
*/
mdt_object_get(info->mti_env, o);
mfd->mfd_object = o;
mfd->mfd_xid = req->rq_xid;
/*
* @open_flags is always not zero. At least it should be FMODE_READ,
* FMODE_WRITE or MDS_FMODE_EXEC.
*/
LASSERT(open_flags != 0);
/* Open handling. */
mdt_mfd_set_mode(mfd, open_flags);
atomic_inc(&o->mot_open_count);
if (open_flags & MDS_OPEN_LEASE)
atomic_inc(&o->mot_lease_count);
/* replay handle */
if (req_is_replay(req)) {
struct mdt_file_data *old_mfd;
/* Check wheather old cookie already exist in
* the list, becasue when do recovery, client
* might be disconnected from server, and
* restart replay, so there maybe some orphan
* mfd here, we should remove them */
LASSERT(info->mti_rr.rr_open_handle != NULL);
spin_lock(&med->med_open_lock);
old_mfd = mdt_open_handle2mfd(med, info->mti_rr.rr_open_handle,
true);
if (old_mfd != NULL) {
CDEBUG(D_HA, "delete orphan mfd = %p, fid = "DFID", "
"cookie = %#llx\n", mfd,
PFID(mdt_object_fid(mfd->mfd_object)),
info->mti_rr.rr_open_handle->cookie);
class_handle_unhash(&old_mfd->mfd_open_handle);
list_del_init(&old_mfd->mfd_list);
spin_unlock(&med->med_open_lock);
/* no attr update for that close */
la->la_valid = 0;
ma->ma_valid |= MA_FLAGS;
ma->ma_attr_flags |= MDS_RECOV_OPEN;
mdt_mfd_close(info, old_mfd);
ma->ma_attr_flags &= ~MDS_RECOV_OPEN;
ma->ma_valid &= ~MA_FLAGS;
} else {
spin_unlock(&med->med_open_lock);
CDEBUG(D_HA, "orphan mfd not found, fid = "DFID", "
"cookie = %#llx\n",
PFID(mdt_object_fid(mfd->mfd_object)),
info->mti_rr.rr_open_handle->cookie);
}
CDEBUG(D_HA, "Store old cookie %#llx in new mfd\n",
info->mti_rr.rr_open_handle->cookie);
mfd->mfd_open_handle_old = *info->mti_rr.rr_open_handle;
}
repbody->mbo_open_handle.cookie = mfd->mfd_open_handle.h_cookie;
if (req->rq_export->exp_disconnected) {
spin_lock(&med->med_open_lock);
class_handle_unhash(&mfd->mfd_open_handle);
list_del_init(&mfd->mfd_list);
spin_unlock(&med->med_open_lock);
mdt_mfd_close(info, mfd);
} else {
spin_lock(&med->med_open_lock);
list_add_tail(&mfd->mfd_list, &med->med_open_head);
spin_unlock(&med->med_open_lock);
}
mdt_empty_transno(info, rc);
RETURN(rc);
err_out:
if (open_flags & MDS_FMODE_WRITE)
mdt_write_put(o);
else if (open_flags & MDS_FMODE_EXEC)
mdt_write_allow(o);
return rc;
}
static int mdt_finish_open(struct mdt_thread_info *info,
struct mdt_object *p, struct mdt_object *o,
enum mds_open_flags open_flags,
struct ldlm_reply *rep)
{
struct ptlrpc_request *req = mdt_info_req(info);
struct obd_export *exp = req->rq_export;
struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
struct md_attr *ma = &info->mti_attr;
struct lu_attr *la = &ma->ma_attr;
struct mdt_file_data *mfd;
struct mdt_body *repbody;
int created;
int rc = 0;
int isreg, isdir, islnk;
struct list_head *t;
ENTRY;
LASSERT(ma->ma_valid & MA_INODE);
created = mdt_get_disposition(rep, DISP_OPEN_CREATE);
repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
isreg = S_ISREG(la->la_mode);
isdir = S_ISDIR(la->la_mode);
islnk = S_ISLNK(la->la_mode);
mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
/* compatibility check for 2.10 clients when it tries to open mirrored
* files. 2.10 clients don't verify overlapping components so they
* would read and write mirrored files just as if they were normal
* PFL files, which will cause the problem that sycned mirrors actually
* contain different data.
* Older clients are not a concern here because they don't even
* understand PFL layout. */
if (isreg && !exp_connect_flr(exp) && ma->ma_valid & MA_LOV &&
mdt_lmm_is_flr(ma->ma_lmm)) {
/* LU-10286: for simplicity clients who don't understand
* mirrored layout(with connect flag OBD_CONNECT2_FLR) won't
* be able to open mirrored files */
RETURN(-EOPNOTSUPP);
}
/* Overstriped files can crash older clients */
if (isreg && !exp_connect_overstriping(exp) &&
mdt_lmm_is_overstriping(ma->ma_lmm))
RETURN(-EOPNOTSUPP);
/* LU-2275, simulate broken behaviour (esp. prevalent in
* pre-2.4 servers where a very strange reply is sent on error
* that looks like it was actually almost successful and a
* failure at the same time.) */
if (CFS_FAIL_CHECK(OBD_FAIL_MDS_NEGATIVE_POSITIVE)) {
mdt_set_disposition(info, rep, DISP_OPEN_OPEN |
DISP_LOOKUP_NEG |
DISP_LOOKUP_POS);
if (open_flags & MDS_OPEN_LOCK)
mdt_set_disposition(info, rep, DISP_OPEN_LOCK);
RETURN(-ENOENT);
}
#ifdef CONFIG_LUSTRE_FS_POSIX_ACL
if (exp_connect_flags(exp) & OBD_CONNECT_ACL) {
struct lu_nodemap *nodemap = nodemap_get_from_exp(exp);
if (IS_ERR(nodemap))
RETURN(PTR_ERR(nodemap));
rc = mdt_pack_acl2body(info, repbody, o, nodemap);
nodemap_putref(nodemap);
if (rc)
RETURN(rc);
}
#endif
/*
* If we are following a symlink, don't open; and do not return open
* handle for special nodes as client required.
*/
if (islnk || (!isreg && !isdir &&
(exp_connect_flags(req->rq_export) & OBD_CONNECT_NODEVOH))) {
lustre_msg_set_transno(req->rq_repmsg, 0);
RETURN(0);
}
/*
* We need to return the existing object's fid back, so it is done here,
* after preparing the reply.
*/
if (!created && (open_flags & MDS_OPEN_EXCL) &&
(open_flags & MDS_OPEN_CREAT))
RETURN(-EEXIST);
/* This can't be done earlier, we need to return reply body */
if (isdir) {
if (open_flags & (MDS_OPEN_CREAT | MDS_FMODE_WRITE)) {
/* We are trying to create or write an existing dir. */
RETURN(-EISDIR);
}
} else if (open_flags & MDS_OPEN_DIRECTORY)
RETURN(-ENOTDIR);
if (CFS_FAIL_CHECK_RESET(OBD_FAIL_MDS_OPEN_CREATE,
OBD_FAIL_MDS_LDLM_REPLY_NET | CFS_FAIL_ONCE))
RETURN(-EAGAIN);
mfd = NULL;
if (info->mti_rr.rr_flags & MRF_OPEN_RESEND) {
spin_lock(&med->med_open_lock);
list_for_each(t, &med->med_open_head) {
mfd = list_entry(t, struct mdt_file_data, mfd_list);
if (mfd->mfd_xid == req->rq_xid) {
repbody->mbo_open_handle.cookie =
mfd->mfd_open_handle.h_cookie;
break;
}
mfd = NULL;
}
spin_unlock(&med->med_open_lock);
if (mfd != NULL) {
/* set repbody->ea_size for resent case */
if (ma->ma_valid & MA_LOV) {
LASSERT(ma->ma_lmm_size != 0);
repbody->mbo_eadatasize = ma->ma_lmm_size;
if (isdir)
repbody->mbo_valid |= OBD_MD_FLDIREA;
else
repbody->mbo_valid |= OBD_MD_FLEASIZE;
}
mdt_set_disposition(info, rep, DISP_OPEN_OPEN);
RETURN(0);
}
/* if we have a real resend (not a resend afrer failover), it
* means close is already happend, so lets return error
*/
RETURN(-ESTALE);
}
rc = mdt_mfd_open(info, p, o, open_flags, created, rep);
if (!rc)
mdt_set_disposition(info, rep, DISP_OPEN_OPEN);
RETURN(rc);
}
void mdt_reconstruct_open(struct mdt_thread_info *info,
struct mdt_lock_handle *lhc)
{
struct req_capsule *pill = info->mti_pill;
struct ptlrpc_request *req = mdt_info_req(info);
struct mdt_reint_record *rr = &info->mti_rr;
struct md_attr *ma = &info->mti_attr;
struct ldlm_reply *ldlm_rep;
u64 opdata;
int rc;
ENTRY;
LASSERT(pill->rc_fmt == &RQF_LDLM_INTENT_OPEN);
ldlm_rep = req_capsule_server_get(pill, &RMF_DLM_REP);
ma->ma_need = MA_INODE | MA_HSM;
ma->ma_valid = 0;
opdata = mdt_req_from_lrd(req, info->mti_reply_data);
mdt_set_disposition(info, ldlm_rep, opdata);
CDEBUG(D_INODE, "This is reconstruct open: disp=%#llx, result=%d\n",
ldlm_rep->lock_policy_res1, req->rq_status);
if (req->rq_status)
/* We did not create successfully, return error to client. */
GOTO(out, rc = req->rq_status);
/* tg_reply_data is just memory only structure, so any non zero fid
* means a real resend not a resend after recovery which need to be
* handled as regular open
*/
if (likely(!fid_is_zero(&info->mti_reply_data->trd_object))) {
rr->rr_fid2 = &info->mti_reply_data->trd_object;
rr->rr_flags |= MRF_OPEN_RESEND;
rc = mdt_open_by_fid(info, ldlm_rep, lhc);
if (rc)
lustre_msg_set_transno(req->rq_repmsg, 0);
} else {
/* We did not try to create, so we are a pure open */
rc = mdt_reint_open(info, lhc);
}
EXIT;
out:
req->rq_status = rc;
lustre_msg_set_status(req->rq_repmsg, req->rq_status);
LASSERT(ergo(rc < 0, lustre_msg_get_transno(req->rq_repmsg) == 0));
}
static int mdt_open_by_fid(struct mdt_thread_info *info, struct ldlm_reply *rep,
struct mdt_lock_handle *lhc)
{
enum mds_open_flags open_flags = info->mti_spec.sp_cr_flags;
struct mdt_reint_record *rr = &info->mti_rr;
struct md_attr *ma = &info->mti_attr;
struct mdt_object *o;
int rc;
ENTRY;
o = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid2);
if (IS_ERR(o))
RETURN(rc = PTR_ERR(o));
rc = mdt_check_resource_ids(info, o);
if (unlikely(rc))
GOTO(out, rc);
rc = mdt_check_enc(info, o);
if (rc)
GOTO(out, rc);
if (unlikely(mdt_object_remote(o))) {
/* the child object was created on remote server */
struct mdt_body *repbody;
mdt_set_disposition(info, rep, (DISP_IT_EXECD |
DISP_LOOKUP_EXECD |
DISP_LOOKUP_POS));
repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
repbody->mbo_fid1 = *rr->rr_fid2;
repbody->mbo_valid |= (OBD_MD_FLID | OBD_MD_MDS);
rc = 0;
} else {
if (mdt_object_exists(o)) {
tgt_open_obj_set(info->mti_env, mdt_obj2dt(o));
mdt_set_disposition(info, rep, (DISP_IT_EXECD |
DISP_LOOKUP_EXECD |
DISP_LOOKUP_POS));
if ((open_flags & MDS_OPEN_EXCL) &&
(open_flags & MDS_OPEN_CREAT))
mdt_set_disposition(info, rep,
DISP_OPEN_CREATE);
mdt_prep_ma_buf_from_rep(info, o, ma, open_flags);
rc = mdt_attr_get_complex(info, o, ma);
if (rc)
GOTO(out, rc);
rc = mdt_finish_open(info, NULL, o, open_flags, rep);
if (rc)
GOTO(out, rc);
mdt_pack_size2body(info, rr->rr_fid2, &lhc->mlh_reg_lh);
} else {
rc = -ENOENT;
}
}
out:
mdt_object_put(info->mti_env, o);
RETURN(rc);
}
/* lock object for open */
static int mdt_object_open_lock(struct mdt_thread_info *info,
struct mdt_object *obj,
struct mdt_lock_handle *lhc,
enum mds_ibits_locks *ibits)
{
struct md_attr *ma = &info->mti_attr;
enum mds_open_flags open_flags = info->mti_spec.sp_cr_flags;
enum mds_ibits_locks trybits = MDS_INODELOCK_NONE;
enum ldlm_mode lm = LCK_PR;
bool acq_lease = !!(open_flags & MDS_OPEN_LEASE);
bool try_layout = false;
bool create_layout = false;
int rc = 0;
__u32 dom_stripe = 0;
unsigned int dom_only = 0;
unsigned int dom_lock = 0;
struct ptlrpc_request *req = mdt_info_req(info);
ENTRY;
*ibits = MDS_INODELOCK_NONE;
if (req_is_replay(mdt_info_req(info)))
RETURN(0);
if (S_ISREG(lu_object_attr(&obj->mot_obj))) {
if (ma->ma_need & MA_LOV && !(ma->ma_valid & MA_LOV) &&
md_should_create(open_flags))
create_layout = true;
if (exp_connect_layout(info->mti_exp) && !create_layout &&
ma->ma_need & MA_LOV)
try_layout = true;
/* DoM files can take IO lock at OPEN when it makes sense,
* check if file has DoM stripe and ask for lock if client
* no lock on that resource yet.
*/
if (ma->ma_valid & MA_LOV && ma->ma_lmm != NULL)
dom_stripe = mdt_lmm_dom_entry_check(ma->ma_lmm,
&dom_only);
/* If only DOM stripe is being used then we can expect IO
* to it after OPEN and will return corresponding DOM ibit
* using default strategy from mdt_opts.mo_dom_lock.
* Otherwise trylock mode is used always and DOM ibit will
* be returned optionally.
*/
if (dom_stripe &&
!mdt_dom_client_has_lock(info, mdt_object_fid(obj)))
dom_lock = !dom_only ? TRYLOCK_DOM_ON_OPEN :
info->mti_mdt->mdt_opts.mo_dom_lock;
}
if (acq_lease) {
/* lease open, acquire write mode of open sem */
down_write(&obj->mot_open_sem);
/* Lease exists and ask for new lease */
if (atomic_read(&obj->mot_lease_count) > 0) {
/* only exclusive open is supported, so lease
* are conflicted to each other */
GOTO(out, rc = -EBUSY);
}
/* Lease must be with open lock */
if (!(open_flags & MDS_OPEN_LOCK)) {
CERROR("%s: Request lease for file:"DFID ", but open lock is missed, open_flags = %#lo : rc = %d\n",
mdt_obd_name(info->mti_mdt),
PFID(mdt_object_fid(obj)), open_flags, -EPROTO);
GOTO(out, rc = -EPROTO);
}
/* should conflict with new opens for write/execute */
lm = LCK_PW;
*ibits = MDS_INODELOCK_OPEN;
/* never grant LCK_EX layout lock to client */
try_layout = false;
} else { /* normal open */
/* normal open holds read mode of open sem */
down_read(&obj->mot_open_sem);
if (open_flags & MDS_OPEN_LOCK) {
if (open_flags & MDS_FMODE_WRITE)
lm = LCK_CW;
else if (open_flags & MDS_FMODE_EXEC)
lm = LCK_PR;
else
lm = LCK_CR;
*ibits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_OPEN;
} else if (atomic_read(&obj->mot_lease_count) > 0) {
if (open_flags & MDS_FMODE_WRITE)
lm = LCK_CW;
else
lm = LCK_CR;
/* revoke lease */
*ibits = MDS_INODELOCK_OPEN;
try_layout = false;
lhc = &info->mti_lh[MDT_LH_LOCAL];
} else if (dom_lock) {
lm = (open_flags & MDS_FMODE_WRITE) ? LCK_PW : LCK_PR;
trybits |= MDS_INODELOCK_DOM | MDS_INODELOCK_LAYOUT;
}
/*
* dir read on open - needs a update lock to protect an page
* cache contents lets take UPD
*/
if (S_ISDIR(lu_object_attr(&obj->mot_obj)) &&
likely(req->rq_reqmsg->lm_repsize) &&
exp_connect_open_readdir(info->mti_exp) &&
likely(!(mdt_object_remote(obj) ||
mdt_object_striped(info, obj))) ){
*ibits |= MDS_INODELOCK_UPDATE;
lm = LCK_PR;
}
CDEBUG(D_INODE, "normal open:"DFID" lease count: %d, lm: %d\n",
PFID(mdt_object_fid(obj)),
atomic_read(&obj->mot_lease_count), lm);
}
/* Return lookup lock to validate inode at the client side.
* This is pretty important otherwise MDT will return layout
* lock for each open.
* Since trylocks are opportunistic now and we also have
* ability to selectively cancel lock bits from clients on conflict,
* we would also return other useful bits: PERM and UPDATE - both
* necessary to ensure subsequent stats from the client would not
* need to talk to us again. Historically speaking both permissions
* and other inode data rarely changes after creation anyway, so
* there should not be any downsides from doing it for normal
* operations now.
*/
if (!CFS_FAIL_CHECK(OBD_FAIL_MDS_NO_LL_OPEN) && try_layout) {
if (!(*ibits & MDS_INODELOCK_LOOKUP))
trybits |= MDS_INODELOCK_LOOKUP;
trybits |= MDS_INODELOCK_LAYOUT;
/* PERM|UPDATE ibits in CR mode don't make sense, since
* all modifications lock these ibits in PW mode.
* Don't lock UPDATE|PERM ibits upon PCC attach, otherwise
* PCC will be detached when these ibits are revoked.
*/
if (lm != LCK_CR && !(open_flags & MDS_OPEN_PCC))
trybits |= MDS_INODELOCK_UPDATE | MDS_INODELOCK_PERM;
}
if (*ibits | trybits)
rc = mdt_object_lock_try(info, obj, lhc, ibits, trybits, lm);
CDEBUG(D_INODE,
"%s: Requested bits lock:"DFID ", ibits = %#lx/%#lx, open_flags = %#lo, try_layout = %d : rc = %d\n",
mdt_obd_name(info->mti_mdt), PFID(mdt_object_fid(obj)),
*ibits, trybits, open_flags, try_layout, rc);
/* will change layout, revoke layout locks by enqueuing EX lock. */
if (rc == 0 && create_layout) {
struct mdt_lock_handle *ll = &info->mti_lh[MDT_LH_LAYOUT];
CDEBUG(D_INODE, "Will create layout, get EX layout lock:"DFID
", open_flags = %#lo\n",
PFID(mdt_object_fid(obj)), open_flags);
/* We cannot enqueue another lock for the same resource we
* already have a lock for, due to mechanics of waiting list
* iterating in ldlm, see LU-3601.
* As such we'll drop the open lock we just got above here,
* it's ok not to have this open lock as it's main purpose is to
* flush unused cached client open handles. */
if (lustre_handle_is_used(&lhc->mlh_reg_lh))
mdt_object_unlock(info, obj, lhc, 1);
LASSERT(!try_layout);
rc = mdt_object_lock(info, obj, ll, MDS_INODELOCK_LAYOUT,
LCK_EX);
CFS_FAIL_TIMEOUT(OBD_FAIL_MDS_LL_BLOCK, 2);
}
/* Check if there is any other open handles after acquiring
* open lock. At this point, caching open handles have been revoked
* by open lock.
* XXX: Now only exclusive open is supported. Need to check the
* type of open for generic lease support. */
if (rc == 0 && acq_lease) {
struct ptlrpc_request *req = mdt_info_req(info);
struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
struct mdt_file_data *mfd;
bool is_replay_or_resent;
int open_count = 0;
/* For lease: application can open a file and then apply lease,
* @handle contains original open handle in that case.
* In recovery, open REQ will be replayed and the lease REQ may
* be resent that means the open handle is already stale, so we
* need to fix it up here by finding new handle. */
is_replay_or_resent = req_is_replay(req) ||
lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT;
/* if the request is _not_ a replay request, rr_open_handle
* may be used to hold an open file handle which is issuing the
* lease request, so that this openhandle doesn't count. */
mfd = mdt_open_handle2mfd(med, info->mti_rr.rr_open_handle,
is_replay_or_resent);
if (mfd != NULL)
++open_count;
CDEBUG(D_INODE, "acq_lease "DFID": openers: %d, want: %d\n",
PFID(mdt_object_fid(obj)),
atomic_read(&obj->mot_open_count), open_count);
if (atomic_read(&obj->mot_open_count) > open_count) {
/* fail if anyone *else* has opened file for write */
if (mdt_write_read(obj) > 1)
GOTO(out, rc = -EBUSY);
}
}
GOTO(out, rc);
out:
RETURN(rc);
}
static void mdt_object_open_unlock(struct mdt_thread_info *info,
struct mdt_object *obj,
struct mdt_lock_handle *lhc,
enum mds_ibits_locks ibits, int rc)
{
enum mds_open_flags open_flags = info->mti_spec.sp_cr_flags;
struct mdt_lock_handle *ll = &info->mti_lh[MDT_LH_LOCAL];
ENTRY;
if (req_is_replay(mdt_info_req(info)))
RETURN_EXIT;
/* Release local lock - the lock put in MDT_LH_LOCAL will never
* return to client side. */
if (lustre_handle_is_used(&ll->mlh_reg_lh))
mdt_object_unlock(info, obj, ll, 1);
ll = &info->mti_lh[MDT_LH_LAYOUT];
/* Release local layout lock, layout was created */
if (lustre_handle_is_used(&ll->mlh_reg_lh)) {
LASSERT(!(ibits & MDS_INODELOCK_LAYOUT));
mdt_object_unlock(info, obj, ll, 1);
}
if (open_flags & MDS_OPEN_LEASE)
up_write(&obj->mot_open_sem);
else
up_read(&obj->mot_open_sem);
/* Cross-ref case, the lock should be returned to the client */
if (ibits == MDS_INODELOCK_NONE || rc == -MDT_EREMOTE_OPEN)
RETURN_EXIT;
if (!(open_flags & MDS_OPEN_LOCK) &&
!(ibits & (MDS_INODELOCK_LAYOUT | MDS_INODELOCK_DOM)) &&
!S_ISDIR(lu_object_attr(&obj->mot_obj))) {
/* for the open request, the lock will only return to client
* if open or layout lock is granted. */
rc = 1;
}
if (rc != 0 || !lustre_handle_is_used(&lhc->mlh_reg_lh)) {
struct ldlm_reply *ldlm_rep;
ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_LOCK);
if (lustre_handle_is_used(&lhc->mlh_reg_lh))
mdt_object_unlock(info, obj, lhc, 1);
}
RETURN_EXIT;
}
/*
* Check release is permitted for the current HSM flags.
*/
static bool mdt_hsm_release_allow(const struct md_attr *ma)
{
if (!(ma->ma_valid & MA_HSM))
return false;
if (ma->ma_hsm.mh_flags & (HS_DIRTY|HS_NORELEASE|HS_LOST))
return false;
if (!(ma->ma_hsm.mh_flags & HS_ARCHIVED))
return false;
return true;
}
static int mdt_refetch_lovea(struct mdt_thread_info *info,
struct mdt_object *o, struct md_attr *ma,
enum mds_ibits_locks ibits)
{
struct mdt_body *repbody;
int rc;
if ((ibits & MDS_INODELOCK_LAYOUT) == 0)
return 0;
if (!S_ISREG(lu_object_attr(&o->mot_obj)))
return 0;
if ((ma->ma_valid & MA_LOV) == 0)
return 0;
ma->ma_valid &= ~MA_LOV;
info->mti_big_lov_used = 0;
ma->ma_lmm = req_capsule_server_get(info->mti_pill, &RMF_MDT_MD);
ma->ma_lmm_size = req_capsule_get_size(info->mti_pill, &RMF_MDT_MD,
RCL_SERVER);
rc = __mdt_stripe_get(info, o, ma, XATTR_NAME_LOV);
if (rc)
return rc;
repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
repbody->mbo_eadatasize = ma->ma_lmm_size;
return 0;
}
static int mdt_open_by_fid_lock(struct mdt_thread_info *info,
struct ldlm_reply *rep,
struct mdt_lock_handle *lhc)
{
const struct lu_env *env = info->mti_env;
struct mdt_device *mdt = info->mti_mdt;
u64 open_flags = info->mti_spec.sp_cr_flags;
struct mdt_reint_record *rr = &info->mti_rr;
struct md_attr *ma = &info->mti_attr;
struct mdt_object *parent = NULL;
struct mdt_object *o;
bool object_locked = false;
enum mds_ibits_locks ibits = MDS_INODELOCK_NONE;
int rc;
ENTRY;
if (md_should_create(open_flags)) {
if (!lu_fid_eq(rr->rr_fid1, rr->rr_fid2)) {
parent = mdt_object_find(env, mdt, rr->rr_fid1);
if (IS_ERR(parent)) {
CDEBUG(D_INODE, "Fail to find parent "DFID
" for anonymous created %ld, try to"
" use server-side parent.\n",
PFID(rr->rr_fid1), PTR_ERR(parent));
parent = NULL;
}
}
if (parent == NULL)
ma->ma_need |= MA_PFID;
}
o = mdt_object_find(env, mdt, rr->rr_fid2);
if (IS_ERR(o))
GOTO(out_parent_put, rc = PTR_ERR(o));
if (mdt_object_remote(o)) {
CDEBUG(D_INFO, "%s: "DFID" is on remote MDT.\n",
mdt_obd_name(info->mti_mdt),
PFID(rr->rr_fid2));
GOTO(out, rc = -EREMOTE);
} else if (!mdt_object_exists(o)) {
mdt_set_disposition(info, rep,
DISP_IT_EXECD |
DISP_LOOKUP_EXECD |
DISP_LOOKUP_NEG);
GOTO(out, rc = -ENOENT);
}
/* do not check enc or id for directory: always allow open */
if (!S_ISDIR(lu_object_attr(&o->mot_obj))) {
rc = mdt_check_resource_ids(info, o);
if (unlikely(rc))
GOTO(out, rc);
rc = mdt_check_enc(info, o);
if (rc)
GOTO(out, rc);
}
mdt_set_disposition(info, rep, (DISP_IT_EXECD | DISP_LOOKUP_EXECD));
mdt_prep_ma_buf_from_rep(info, o, ma, open_flags);
if (open_flags & MDS_OPEN_RELEASE)
ma->ma_need |= MA_HSM;
rc = mdt_attr_get_complex(info, o, ma);
if (rc)
GOTO(out, rc);
/* We should not change file's existing LOV EA */
if (S_ISREG(lu_object_attr(&o->mot_obj)) &&
open_flags & MDS_OPEN_HAS_EA && ma->ma_valid & MA_LOV)
GOTO(out, rc = -EEXIST);
/* If a release request, check file open flags are fine and ask for an
* exclusive open access. */
if (open_flags & MDS_OPEN_RELEASE && !mdt_hsm_release_allow(ma))
GOTO(out, rc = -EPERM);
rc = mdt_check_resent_lock(info, o, lhc);
if (rc < 0) {
GOTO(out, rc);
} else if (rc > 0) {
rc = mdt_object_open_lock(info, o, lhc, &ibits);
object_locked = true;
if (rc)
GOTO(out_unlock, rc);
}
if (ma->ma_valid & MA_PFID) {
parent = mdt_object_find(env, mdt, &ma->ma_pfid);
if (IS_ERR(parent)) {
CDEBUG(D_INODE, "Fail to find parent "DFID
" for anonymous created %ld, try to"
" use system default.\n",
PFID(&ma->ma_pfid), PTR_ERR(parent));
parent = NULL;
}
}
tgt_open_obj_set(info->mti_env, mdt_obj2dt(o));
rc = mdt_finish_open(info, parent, o, open_flags, rep);
if (rc)
GOTO(out_unlock, rc);
mdt_set_disposition(info, rep, DISP_LOOKUP_POS);
if (open_flags & MDS_OPEN_LOCK)
mdt_set_disposition(info, rep, DISP_OPEN_LOCK);
if (open_flags & MDS_OPEN_LEASE)
mdt_set_disposition(info, rep, DISP_OPEN_LEASE);
/*
* if layout lock is granted, then we should re-fetch LOVEA
* which was originally taken w/o the lock
*/
rc = mdt_refetch_lovea(info, o, ma, ibits);
GOTO(out_unlock, rc);
out_unlock:
if (object_locked)
mdt_object_open_unlock(info, o, lhc, ibits, rc);
out:
mdt_object_put(env, o);
if (rc == 0)
mdt_pack_size2body(info, rr->rr_fid2, &lhc->mlh_reg_lh);
out_parent_put:
if (parent != NULL)
mdt_object_put(env, parent);
return rc;
}
/* Cross-ref request. Currently it can only be a pure open (w/o create) */
static int mdt_cross_open(struct mdt_thread_info *info,
const struct lu_fid *parent_fid,
const struct lu_fid *fid,
struct ldlm_reply *rep,
enum mds_open_flags open_flags)
{
struct md_attr *ma = &info->mti_attr;
struct mdt_object *o;
int rc;
ENTRY;
o = mdt_object_find(info->mti_env, info->mti_mdt, fid);
if (IS_ERR(o))
RETURN(rc = PTR_ERR(o));
rc = mdt_check_resource_ids(info, o);
if (unlikely(rc))
GOTO(out, rc);
rc = mdt_check_enc(info, o);
if (rc)
GOTO(out, rc);
if (mdt_object_remote(o)) {
/* Something is wrong here, the object is on another MDS! */
CERROR("%s: "DFID" isn't on this server!: rc = %d\n",
mdt_obd_name(info->mti_mdt), PFID(fid), -EFAULT);
LU_OBJECT_DEBUG(D_WARNING, info->mti_env,
&o->mot_obj,
"Object isn't on this server! FLD error?");
rc = -EFAULT;
} else {
if (mdt_object_exists(o)) {
int mask;
/* Do permission check for cross-open after converting
* MDS_OPEN_* flags to MAY_* permission mask.
*/
mask = mds_accmode(open_flags);
rc = mo_permission(info->mti_env, NULL,
mdt_object_child(o), NULL, mask);
if (rc) {
if (rc == -EACCES) {
/* in case of EACCES,
* hint the client with supp groups
* and ACLs
*/
mdt_pack_attr_acl(info, o);
}
goto out;
}
mdt_prep_ma_buf_from_rep(info, o, ma, open_flags);
rc = mdt_attr_get_complex(info, o, ma);
if (rc != 0)
GOTO(out, rc);
rc = mdt_pack_secctx_in_reply(info, o);
if (unlikely(rc))
GOTO(out, rc);
rc = mdt_pack_encctx_in_reply(info, o);
if (unlikely(rc))
GOTO(out, rc);
rc = mdt_finish_open(info, NULL, o, open_flags, rep);
} else {
/*
* Something is wrong here. lookup was positive but
* there is no object!
*/
CERROR("%s: "DFID" doesn't exist!: rc = %d\n",
mdt_obd_name(info->mti_mdt), PFID(fid), -EFAULT);
rc = -EFAULT;
}
}
out:
mdt_object_put(info->mti_env, o);
RETURN(rc);
}
/*
* find root object and take its xattr lock if it's on remote MDT, later create
* may use fs default striping (which is stored in root xattr).
*/
static int mdt_lock_root_xattr(struct mdt_thread_info *info,
struct mdt_device *mdt)
{
struct mdt_object *md_root = mdt->mdt_md_root;
struct mdt_lock_handle *lh = &info->mti_lh[MDT_LH_LOCAL];
enum mds_ibits_locks ibits = MDS_INODELOCK_XATTR;
int rc;
if (md_root == NULL) {
lu_root_fid(&info->mti_tmp_fid1);
md_root = mdt_object_find(info->mti_env, mdt,
&info->mti_tmp_fid1);
if (IS_ERR(md_root))
return PTR_ERR(md_root);
spin_lock(&mdt->mdt_lock);
if (mdt->mdt_md_root != NULL) {
spin_unlock(&mdt->mdt_lock);
LASSERTF(mdt->mdt_md_root == md_root,
"Different root object ("
DFID") instances, %px, %px\n",
PFID(&info->mti_tmp_fid1),
mdt->mdt_md_root, md_root);
LASSERT(atomic_read(
&md_root->mot_obj.lo_header->loh_ref) > 1);
mdt_object_put(info->mti_env, md_root);
} else {
mdt->mdt_md_root = md_root;
spin_unlock(&mdt->mdt_lock);
}
}
if (md_root->mot_cache_attr || !mdt_object_remote(md_root))
return 0;
mdt_lock_reg_init(lh, LCK_PR);
rc = mdt_object_lock_internal(info, md_root, mdt_object_fid(md_root),
lh, &ibits, 0, true);
if (rc < 0)
return rc;
md_root->mot_cache_attr = 1;
/* don't cancel this lock, so that we know the cached xattr is valid. */
ldlm_lock_decref(&lh->mlh_rreg_lh, LCK_PR);
lh->mlh_rreg_lh.cookie = 0ull;
return 0;
}
static inline enum ldlm_mode mdt_open_lock_mode(struct mdt_thread_info *info,
struct mdt_object *p,
struct lu_name *name,
enum mds_open_flags open_flags)
{
int result;
struct lu_fid fid;
/* We don't need to take the DLM lock for a volatile */
if (open_flags & MDS_OPEN_VOLATILE)
return LCK_NL;
if (!(open_flags & MDS_OPEN_CREAT))
return LCK_PR;
result = mdo_lookup(info->mti_env, mdt_object_child(p), name, &fid,
&info->mti_spec);
/* If the file exists we only need a read lock on the parent */
return (result == 0) ? LCK_PR : LCK_PW;
}
static void mdt_pack_attr_acl(struct mdt_thread_info *info,
struct mdt_object *o)
{
struct ptlrpc_request *req = mdt_info_req(info);
struct md_attr *ma = &info->mti_attr;
struct lu_nodemap *nodemap;
struct mdt_body *repbody;
int rc;
repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
rc = mdt_attr_get_complex(info, o, ma);
if (!rc)
mdt_pack_attr2body(info, repbody, &ma->ma_attr,
mdt_object_fid(o));
#ifdef CONFIG_LUSTRE_FS_POSIX_ACL
if (exp_connect_flags(req->rq_export) & OBD_CONNECT_ACL) {
nodemap = nodemap_get_from_exp(req->rq_export);
if (IS_ERR(nodemap))
return;
(void)mdt_pack_acl2body(info, repbody, o, nodemap);
nodemap_putref(nodemap);
}
#endif
}
int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc)
{
struct mdt_device *mdt = info->mti_mdt;
struct ptlrpc_request *req = mdt_info_req(info);
struct mdt_object *parent;
struct mdt_object *child;
struct mdt_lock_handle *lh = NULL;
struct ldlm_reply *ldlm_rep;
struct mdt_body *repbody;
struct lu_fid *child_fid = &info->mti_tmp_fid1;
struct lu_ucred *uc = mdt_ucred(info);
struct md_attr *ma = &info->mti_attr;
enum mds_open_flags open_flags = info->mti_spec.sp_cr_flags;
enum mds_ibits_locks ibits = MDS_INODELOCK_NONE;
struct mdt_reint_record *rr = &info->mti_rr;
int result, rc;
int created = 0;
int object_locked = 0;
enum ldlm_mode lock_mode;
u32 msg_flags;
ktime_t kstart = ktime_get();
ENTRY;
CFS_FAIL_TIMEOUT_ORSET(OBD_FAIL_MDS_PAUSE_OPEN, CFS_FAIL_ONCE,
(obd_timeout + 1) / 4);
repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
ma->ma_need = MA_INODE;
ma->ma_valid = 0;
LASSERT(info->mti_pill->rc_fmt == &RQF_LDLM_INTENT_OPEN);
ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
msg_flags = lustre_msg_get_flags(req->rq_reqmsg);
if ((open_flags & (MDS_OPEN_HAS_EA | MDS_OPEN_HAS_OBJS)) &&
info->mti_spec.u.sp_ea.eadata == NULL)
GOTO(out, result = err_serious(-EINVAL));
if (open_flags & MDS_FMODE_WRITE &&
exp_connect_flags(req->rq_export) & OBD_CONNECT_RDONLY)
GOTO(out, result = -EROFS);
CDEBUG(D_INODE, "I am going to open "DFID"/("DNAME"->"DFID") "
"cr_flag=%#lo mode=0%06o msg_flag=0x%x\n",
PFID(rr->rr_fid1), encode_fn_luname(&rr->rr_name),
PFID(rr->rr_fid2), open_flags, ma->ma_attr.la_mode, msg_flags);
/* Prevent by-fid operation if parent fid is .lustre/fid.
* Also, we want rbac roles to have precedence over any other
* permission or capability checks
*/
if (lu_fid_eq(rr->rr_fid1, &LU_OBF_FID) && !uc->uc_rbac_byfid_ops)
GOTO(out, result = -EPERM);
if (info->mti_cross_ref) {
/* This is cross-ref open */
mdt_set_disposition(info, ldlm_rep,
(DISP_IT_EXECD | DISP_LOOKUP_EXECD |
DISP_LOOKUP_POS));
result = mdt_cross_open(info, rr->rr_fid2, rr->rr_fid1,
ldlm_rep, open_flags);
GOTO(out, result);
} else if (req_is_replay(req)) {
result = mdt_open_by_fid(info, ldlm_rep, lhc);
if (result != -ENOENT)
GOTO(out, result);
/* We didn't find the correct object, so we need to re-create it
* via a regular replay. */
if (!(open_flags & MDS_OPEN_CREAT)) {
DEBUG_REQ(D_ERROR, req,
"OPEN & CREAT not in open replay/by_fid");
GOTO(out, result = -EFAULT);
}
CDEBUG(D_INFO, "No object(1), continue as regular open.\n");
} else if (open_flags & MDS_OPEN_BY_FID) {
result = mdt_open_by_fid_lock(info, ldlm_rep, lhc);
if (result < 0)
CDEBUG(D_INFO, "no object for "DFID": %d\n",
PFID(rr->rr_fid2), result);
GOTO(out, result);
}
if (CFS_FAIL_CHECK(OBD_FAIL_MDS_OPEN_PACK))
GOTO(out, result = err_serious(-ENOMEM));
mdt_set_disposition(info, ldlm_rep,
(DISP_IT_EXECD | DISP_LOOKUP_EXECD));
if (!lu_name_is_valid(&rr->rr_name))
GOTO(out, result = -EPROTO);
result = mdt_lock_root_xattr(info, mdt);
if (result < 0)
GOTO(out, result);
parent = mdt_object_find(info->mti_env, mdt, rr->rr_fid1);
if (IS_ERR(parent))
GOTO(out, result = PTR_ERR(parent));
/* get and check version of parent */
result = mdt_version_get_check(info, parent, 0);
if (result) {
mdt_object_put(info->mti_env, parent);
GOTO(out, result);
}
if (!uc->uc_rbac_fscrypt_admin &&
parent->mot_obj.lo_header->loh_attr & LOHA_FSCRYPT_MD &&
open_flags & MDS_OPEN_CREAT)
GOTO(out_parent, result = -EPERM);
result = mdt_check_resource_ids(info, parent);
if (unlikely(result))
GOTO(out_parent, result);
result = mdt_check_enc(info, parent);
if (result)
GOTO(out_parent, result);
fid_zero(child_fid);
result = -ENOENT;
lock_mode = mdt_open_lock_mode(info, parent, &rr->rr_name, open_flags);
CFS_RACE(OBD_FAIL_MDS_REINT_OPEN);
again_pw:
if (lock_mode != LCK_NL) {
lh = &info->mti_lh[MDT_LH_PARENT];
result = mdt_parent_lock(info, parent, lh, &rr->rr_name,
lock_mode);
if (result != 0)
GOTO(out_parent, result);
result = mdo_lookup(info->mti_env, mdt_object_child(parent),
&rr->rr_name, child_fid, &info->mti_spec);
}
LASSERTF(ergo(result == 0, fid_is_sane(child_fid)),
"looking for "DFID"/"DNAME", found FID = "DFID"\n",
PFID(mdt_object_fid(parent)), encode_fn_luname(&rr->rr_name),
PFID(child_fid));
if (result != 0 && result != -ENOENT) {
/* in case of 'permission denied',
* hint the client with supp groups and ACLs
*/
if (result == -EACCES)
mdt_pack_attr_acl(info, parent);
GOTO(out_parent_unlock, result);
}
CFS_RACE(OBD_FAIL_MDS_REINT_OPEN2);
if (result == -ENOENT) {
mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
if (!(open_flags & MDS_OPEN_CREAT))
GOTO(out_parent_unlock, result);
if (mdt_rdonly(req->rq_export))
GOTO(out_parent_unlock, result = -EROFS);
LASSERT(equi(lh == NULL, lock_mode == LCK_NL));
if (lock_mode == LCK_PR) {
/* unlink vs create race: get write lock and restart */
mdt_object_unlock(info, parent, lh, 1);
mdt_clear_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
lock_mode = LCK_PW;
goto again_pw;
}
*child_fid = *info->mti_rr.rr_fid2;
LASSERTF(fid_is_sane(child_fid), "fid="DFID"\n",
PFID(child_fid));
/* In the function below, .hs_keycmp resolves to
* lu_obj_hop_keycmp() */
child = mdt_object_new(info->mti_env, mdt, child_fid);
} else {
/*
* Check for O_EXCL is moved to the mdt_finish_open(),
* we need to return FID back in that case.
*/
mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
child = mdt_object_find(info->mti_env, mdt, child_fid);
}
if (IS_ERR(child))
GOTO(out_parent_unlock, result = PTR_ERR(child));
/** check version of child */
rc = mdt_version_get_check(info, child, 1);
if (rc)
GOTO(out_child, result = rc);
tgt_open_obj_set(info->mti_env, mdt_obj2dt(child));
if (result == -ENOENT) {
if (!mdt_layout_version_check(info, parent, rr->rr_layout_ver))
GOTO(out_child, result = -ESTALE);
/* Create under OBF and .lustre is not permitted */
if (!fid_is_md_operative(rr->rr_fid1) &&
(open_flags & MDS_OPEN_VOLATILE) == 0)
GOTO(out_child, result = -EPERM);
/* save versions in reply */
mdt_version_get_save(info, parent, 0);
mdt_version_get_save(info, child, 1);
/* version of child will be changed */
tgt_vbr_obj_set(info->mti_env, mdt_obj2dt(child));
/* Not found and with MDS_OPEN_CREAT: let's create it. */
mdt_set_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
/* Don't do lookup sanity check. We know name doesn't exist. */
info->mti_spec.sp_cr_lookup = 0;
info->mti_spec.sp_feat = &dt_directory_features;
/* set jobid xattr name from sysfs parameter */
strncpy(info->mti_spec.sp_cr_job_xattr, mdt->mdt_job_xattr,
XATTR_JOB_MAX_LEN);
result = mdo_create(info->mti_env, mdt_object_child(parent),
&rr->rr_name, mdt_object_child(child),
&info->mti_spec, &info->mti_attr);
if (result == -ERESTART) {
mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
GOTO(out_child, result);
} else {
mdt_prep_ma_buf_from_rep(info, child, ma, open_flags);
/* XXX: we should call this once, see few lines below */
if (result == 0)
result = mdt_attr_get_complex(info, child, ma);
if (result != 0) {
/* in case of failure to create,
* hint the client with supp groups and ACLs
*/
mdt_pack_attr_acl(info, parent);
GOTO(out_child, result);
}
}
created = 1;
mdt_counter_incr(req, LPROC_MDT_MKNOD,
ktime_us_delta(ktime_get(), kstart));
} else {
/*
* The object is on remote node, return its FID for remote open.
*/
if (mdt_object_remote(child)) {
/*
* Check if this lock already was sent to client and
* this is resent case. For resent case do not take lock
* again, use what is already granted.
*/
LASSERT(lhc != NULL);
rc = mdt_check_resent_lock(info, child, lhc);
if (rc < 0)
GOTO(out_child, result = rc);
else if (rc > 0)
rc = mdt_object_lookup_lock(info, NULL, child,
lhc, LCK_PR);
repbody->mbo_fid1 = *mdt_object_fid(child);
repbody->mbo_valid |= (OBD_MD_FLID | OBD_MD_MDS);
if (rc != 0)
result = rc;
else
result = -MDT_EREMOTE_OPEN;
GOTO(out_child, result);
} else if (mdt_object_exists(child)) {
/* Check early for MDS_OPEN_DIRECTORY/O_DIRECTORY to
* avoid opening regular files from lfs getstripe
* since doing so breaks the leases used by lfs
* mirror. See LU-13693. */
if (open_flags & MDS_OPEN_DIRECTORY &&
S_ISREG(lu_object_attr(&child->mot_obj)))
GOTO(out_child, result = -ENOTDIR);
/* We have to get attr & LOV EA & HSM for this
* object. */
mdt_prep_ma_buf_from_rep(info, child, ma, open_flags);
ma->ma_need |= MA_HSM;
result = mdt_attr_get_complex(info, child, ma);
if (result != 0)
GOTO(out_child, result);
} else {
/* Object does not exist. Likely FS corruption. */
CERROR("%s: name '"DNAME"' present, but FID "
DFID" is invalid\n", mdt_obd_name(info->mti_mdt),
encode_fn_luname(&rr->rr_name), PFID(child_fid));
GOTO(out_child, result = -EIO);
}
}
repbody->mbo_max_mdsize = info->mti_mdt->mdt_max_mdsize;
repbody->mbo_valid |= OBD_MD_FLMODEASIZE;
rc = mdt_pack_secctx_in_reply(info, child);
if (unlikely(rc))
GOTO(out_child, result = rc);
rc = mdt_pack_encctx_in_reply(info, child);
if (unlikely(rc))
GOTO(out_child, result = rc);
rc = mdt_check_resent_lock(info, child, lhc);
if (rc < 0) {
GOTO(out_child, result = rc);
} else if (rc == 0) {
/* the open lock might already be gotten in
* ldlm_handle_enqueue() */
LASSERT(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT);
if (open_flags & MDS_OPEN_LOCK)
mdt_set_disposition(info, ldlm_rep, DISP_OPEN_LOCK);
} else {
/* get openlock if this isn't replay and client requested it */
if (!req_is_replay(req)) {
CFS_FAIL_TIMEOUT(OBD_FAIL_MDS_DELAY_OPEN, cfs_fail_val);
rc = mdt_object_open_lock(info, child, lhc, &ibits);
object_locked = 1;
if (rc != 0)
GOTO(out_child_unlock, result = rc);
else if (open_flags & MDS_OPEN_LOCK)
mdt_set_disposition(info, ldlm_rep,
DISP_OPEN_LOCK);
}
}
/* Try to open it now. */
rc = mdt_finish_open(info, parent, child, open_flags, ldlm_rep);
if (rc) {
result = rc;
/* openlock will be released if mdt_finish_open() failed */
mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_LOCK);
if (created && (open_flags & MDS_OPEN_VOLATILE)) {
CERROR("%s: cannot open volatile file "DFID", orphan "
"file will be left in PENDING directory until "
"next reboot, rc = %d\n", mdt_obd_name(mdt),
PFID(mdt_object_fid(child)), rc);
GOTO(out_child_unlock, result);
}
if (created) {
ma->ma_need = 0;
ma->ma_valid = 0;
rc = mdo_unlink(info->mti_env,
mdt_object_child(parent),
mdt_object_child(child),
&rr->rr_name,
&info->mti_attr, 0);
if (rc != 0)
CERROR("%s: "DFID" cleanup of open: rc = %d\n",
mdt_obd_name(info->mti_mdt),
PFID(mdt_object_fid(child)), rc);
mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
}
GOTO(out_child_unlock, result);
}
/*
* if layout lock is granted, then we should re-fetch LOVEA
* which was originally taken w/o the lock.
*/
result = mdt_refetch_lovea(info, child, ma, ibits);
GOTO(out_child_unlock, result);
out_child_unlock:
if (object_locked)
mdt_object_open_unlock(info, child, lhc, ibits, result);
out_child:
mdt_object_put(info->mti_env, child);
if (result == 0)
mdt_pack_size2body(info, child_fid, &lhc->mlh_reg_lh);
out_parent_unlock:
if (lh != NULL)
mdt_object_unlock(info, parent, lh, result || !created);
out_parent:
mdt_object_put(info->mti_env, parent);
out:
if (result)
lustre_msg_set_transno(req->rq_repmsg, 0);
else
mdt_counter_incr(req, LPROC_MDT_OPEN,
ktime_us_delta(ktime_get(), kstart));
return result;
}
/*
* Create an orphan object use local root.
*/
static struct mdt_object *mdt_orphan_open(struct mdt_thread_info *info,
struct mdt_device *mdt,
const struct lu_fid *fid,
struct md_attr *attr, fmode_t fmode)
{
const struct lu_env *env = info->mti_env;
struct md_op_spec *spec = &info->mti_spec;
struct lu_fid *local_root_fid = &info->mti_tmp_fid1;
struct mdt_object *obj = NULL;
struct mdt_object *local_root;
static const struct lu_name lname = {
.ln_name = "i_am_nobody",
.ln_namelen = sizeof("i_am_nobody") - 1,
};
struct lu_ucred *uc;
kernel_cap_t uc_cap_save;
int rc;
ENTRY;
rc = dt_root_get(env, mdt->mdt_bottom, local_root_fid);
if (rc != 0)
RETURN(ERR_PTR(rc));
local_root = mdt_object_find(env, mdt, local_root_fid);
if (IS_ERR(local_root))
RETURN(local_root);
obj = mdt_object_new(env, mdt, fid);
if (IS_ERR(obj))
GOTO(out, rc = PTR_ERR(obj));
spec->sp_cr_lookup = 0;
spec->sp_feat = &dt_directory_features;
spec->sp_cr_flags = MDS_OPEN_VOLATILE | fmode;
if (attr->ma_valid & MA_LOV) {
spec->u.sp_ea.eadata = attr->ma_lmm;
spec->u.sp_ea.eadatalen = attr->ma_lmm_size;
spec->sp_cr_flags |= MDS_OPEN_HAS_EA;
} else {
spec->sp_cr_flags |= MDS_OPEN_DELAY_CREATE;
}
uc = lu_ucred(env);
uc_cap_save = uc->uc_cap;
cap_raise(uc->uc_cap, CAP_DAC_OVERRIDE);
rc = mdo_create(env, mdt_object_child(local_root), &lname,
mdt_object_child(obj), spec, attr);
uc->uc_cap = uc_cap_save;
if (rc < 0) {
CERROR("%s: cannot create volatile file "DFID": rc = %d\n",
mdt_obd_name(mdt), PFID(fid), rc);
GOTO(out, rc);
}
rc = mo_open(env, mdt_object_child(obj), MDS_OPEN_CREATED, spec);
if (rc < 0)
CERROR("%s: cannot open volatile file "DFID", orphan "
"file will be left in PENDING directory until "
"next reboot, rc = %d\n", mdt_obd_name(mdt),
PFID(fid), rc);
GOTO(out, rc);
out:
if (rc < 0) {
if (!IS_ERR(obj))
mdt_object_put(env, obj);
obj = ERR_PTR(rc);
}
mdt_object_put(env, local_root);
return obj;
}
/* XXX Look into layout in MDT layer. */
static inline int mdt_hsm_set_released(struct lov_mds_md *lmm)
{
struct lov_comp_md_v1 *comp_v1;
struct lov_mds_md *v1;
__u32 off;
int i;
if (lmm->lmm_magic == cpu_to_le32(LOV_MAGIC_COMP_V1_DEFINED)) {
comp_v1 = (struct lov_comp_md_v1 *)lmm;
if (comp_v1->lcm_entry_count == 0)
return -EINVAL;
for (i = 0; i < le16_to_cpu(comp_v1->lcm_entry_count); i++) {
off = le32_to_cpu(comp_v1->lcm_entries[i].lcme_offset);
v1 = (struct lov_mds_md *)((char *)comp_v1 + off);
if (v1->lmm_magic == cpu_to_le32(LOV_MAGIC_FOREIGN))
continue;
v1->lmm_pattern |= cpu_to_le32(LOV_PATTERN_F_RELEASED);
}
} else {
lmm->lmm_pattern |= cpu_to_le32(LOV_PATTERN_F_RELEASED);
}
return 0;
}
static inline int mdt_get_lmm_gen(struct lov_mds_md *lmm, __u32 *gen)
{
struct lov_comp_md_v1 *comp_v1;
if (le32_to_cpu(lmm->lmm_magic == LOV_MAGIC_COMP_V1)) {
comp_v1 = (struct lov_comp_md_v1 *)lmm;
*gen = le32_to_cpu(comp_v1->lcm_layout_gen);
} else if (le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_V1 ||
le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_V3) {
*gen = le16_to_cpu(lmm->lmm_layout_gen);
} else {
return -EINVAL;
}
return 0;
}
static int mdt_hsm_release(struct mdt_thread_info *info, struct mdt_object *o,
struct md_attr *ma)
{
struct mdt_lock_handle *lh = &info->mti_lh[MDT_LH_LAYOUT];
struct lu_ucred *uc = mdt_ucred(info);
struct close_data *data;
struct ldlm_lock *lease;
struct mdt_object *orphan;
struct md_attr *orp_ma;
struct lu_buf *buf;
kernel_cap_t cap;
bool lease_broken;
int rc;
int rc2;
ENTRY;
if (mdt_rdonly(info->mti_exp))
RETURN(-EROFS);
if (!uc->uc_rbac_hsm_ops)
RETURN(-EACCES);
data = req_capsule_client_get(info->mti_pill, &RMF_CLOSE_DATA);
if (data == NULL)
RETURN(-EPROTO);
if (req_capsule_req_need_swab(info->mti_pill))
lustre_swab_close_data_special(data, ma->ma_attr_flags);
lease = ldlm_handle2lock(&data->cd_handle);
if (lease == NULL)
RETURN(-ESTALE);
/* try to hold open_sem so that nobody else can open the file */
if (!down_write_trylock(&o->mot_open_sem)) {
ldlm_lock_cancel(lease);
GOTO(out_reprocess, rc = -EBUSY);
}
/* Check if the lease open lease has already canceled */
lock_res_and_lock(lease);
lease_broken = (lease->l_flags & LDLM_FL_CANCEL);
unlock_res_and_lock(lease);
LDLM_DEBUG(lease, DFID " lease broken? %d",
PFID(mdt_object_fid(o)), lease_broken);
/* Cancel server side lease. Client side counterpart should
* have been cancelled. It's okay to cancel it now as we've
* held mot_open_sem. */
ldlm_lock_cancel(lease);
if (lease_broken) /* don't perform release task */
GOTO(out_unlock, rc = -ESTALE);
if (fid_is_zero(&data->cd_fid) || !fid_is_sane(&data->cd_fid))
GOTO(out_unlock, rc = -EINVAL);
/* ma_need was set before but it seems fine to change it in order to
* avoid modifying the one from RPC */
ma->ma_need = MA_HSM;
rc = mdt_attr_get_complex(info, o, ma);
if (rc != 0)
GOTO(out_unlock, rc);
if (ma->ma_attr_flags & MDS_PCC_ATTACH) {
if (ma->ma_valid & MA_HSM) {
if (ma->ma_hsm.mh_flags & HS_RELEASED)
GOTO(out_unlock, rc = -EALREADY);
if (ma->ma_hsm.mh_arch_id != data->cd_archive_id)
CDEBUG(D_CACHE,
DFID" archive id diff: %llu:%u\n",
PFID(mdt_object_fid(o)),
ma->ma_hsm.mh_arch_id,
data->cd_archive_id);
if (!(ma->ma_hsm.mh_flags & HS_DIRTY) &&
ma->ma_hsm.mh_arch_ver == data->cd_data_version) {
CDEBUG(D_CACHE,
DFID" data version matches: packed=%llu "
"and on-disk=%llu\n",
PFID(mdt_object_fid(o)),
data->cd_data_version,
ma->ma_hsm.mh_arch_ver);
ma->ma_hsm.mh_flags = HS_ARCHIVED | HS_EXISTS;
}
if (ma->ma_hsm.mh_flags & HS_DIRTY)
ma->ma_hsm.mh_flags = HS_ARCHIVED | HS_EXISTS;
} else {
/* Set up HSM attribte for PCC archived object */
BUILD_BUG_ON(sizeof(struct hsm_attrs) >
sizeof(info->mti_xattr_buf));
buf = &info->mti_buf;
buf->lb_buf = info->mti_xattr_buf;
buf->lb_len = sizeof(struct hsm_attrs);
memset(&ma->ma_hsm, 0, sizeof(ma->ma_hsm));
ma->ma_hsm.mh_flags = HS_ARCHIVED | HS_EXISTS;
ma->ma_hsm.mh_arch_id = data->cd_archive_id;
ma->ma_hsm.mh_arch_ver = data->cd_data_version;
lustre_hsm2buf(buf->lb_buf, &ma->ma_hsm);
rc = mo_xattr_set(info->mti_env, mdt_object_child(o),
buf, XATTR_NAME_HSM, 0);
if (rc)
GOTO(out_unlock, rc);
}
} else {
if (!mdt_hsm_release_allow(ma))
GOTO(out_unlock, rc = -EPERM);
/* already released? */
if (ma->ma_hsm.mh_flags & HS_RELEASED)
GOTO(out_unlock, rc = 0);
/* Compare on-disk and packed data_version */
if (data->cd_data_version != ma->ma_hsm.mh_arch_ver) {
CDEBUG(D_HSM, DFID" data_version mismatches: "
"packed=%llu and on-disk=%llu\n",
PFID(mdt_object_fid(o)),
data->cd_data_version,
ma->ma_hsm.mh_arch_ver);
GOTO(out_unlock, rc = -EPERM);
}
}
ma->ma_valid = MA_INODE;
ma->ma_attr.la_valid &= LA_ATIME | LA_MTIME | LA_CTIME | LA_SIZE;
rc = mo_attr_set(info->mti_env, mdt_object_child(o), ma);
if (rc < 0)
GOTO(out_unlock, rc);
mutex_lock(&o->mot_som_mutex);
rc2 = mdt_set_som(info, o, SOM_FL_STRICT, ma->ma_attr.la_size,
ma->ma_attr.la_blocks);
mutex_unlock(&o->mot_som_mutex);
if (rc2 < 0)
CDEBUG(D_INODE,
"%s: File "DFID" SOM update failed: rc = %d\n",
mdt_obd_name(info->mti_mdt),
PFID(mdt_object_fid(o)), rc2);
ma->ma_need = MA_INODE | MA_LOV;
rc = mdt_attr_get_complex(info, o, ma);
if (rc < 0)
GOTO(out_unlock, rc);
if (!(ma->ma_valid & MA_LOV)) {
/* Even empty file are released */
ma->ma_lmm = (void *)info->mti_xattr_buf;
LASSERT(sizeof(*ma->ma_lmm) < sizeof(info->mti_xattr_buf));
memset(ma->ma_lmm, 0, sizeof(*ma->ma_lmm));
ma->ma_lmm->lmm_magic = cpu_to_le32(LOV_MAGIC_V1_DEFINED);
ma->ma_lmm->lmm_pattern = cpu_to_le32(LOV_PATTERN_RAID0);
ma->ma_lmm->lmm_stripe_size = cpu_to_le32(LOV_MIN_STRIPE_SIZE);
ma->ma_lmm_size = sizeof(*ma->ma_lmm);
} else {
/* Magic must be LOV_MAGIC_*_DEFINED or LOD will interpret
* ma_lmm as lov_user_md, then it will be confused by union of
* layout_gen and stripe_offset. */
if ((le32_to_cpu(ma->ma_lmm->lmm_magic) & LOV_MAGIC_MASK) ==
LOV_MAGIC_MAGIC)
ma->ma_lmm->lmm_magic |= cpu_to_le32(LOV_MAGIC_DEFINED);
else
GOTO(out_unlock, rc = -EINVAL);
}
/* Set file as released. */
rc = mdt_hsm_set_released(ma->ma_lmm);
if (rc)
GOTO(out_unlock, rc);
orp_ma = &info->mti_u.hsm.attr;
orp_ma->ma_attr.la_mode = S_IFREG | S_IWUSR;
/* We use root ownership to bypass potential quota
* restrictions on the user and group of the file. */
orp_ma->ma_attr.la_uid = 0;
orp_ma->ma_attr.la_gid = 0;
orp_ma->ma_attr.la_valid = LA_MODE | LA_UID | LA_GID;
orp_ma->ma_lmm = ma->ma_lmm;
orp_ma->ma_lmm_size = ma->ma_lmm_size;
orp_ma->ma_valid = MA_INODE | MA_LOV;
orphan = mdt_orphan_open(info, info->mti_mdt, &data->cd_fid, orp_ma,
MDS_FMODE_WRITE);
if (IS_ERR(orphan)) {
CERROR("%s: cannot open orphan file "DFID": rc = %ld\n",
mdt_obd_name(info->mti_mdt), PFID(&data->cd_fid),
PTR_ERR(orphan));
GOTO(out_unlock, rc = PTR_ERR(orphan));
}
/* Set up HSM attribute for orphan object */
BUILD_BUG_ON(sizeof(struct hsm_attrs) > sizeof(info->mti_xattr_buf));
buf = &info->mti_buf;
buf->lb_buf = info->mti_xattr_buf;
buf->lb_len = sizeof(struct hsm_attrs);
ma->ma_hsm.mh_flags |= HS_RELEASED;
lustre_hsm2buf(buf->lb_buf, &ma->ma_hsm);
ma->ma_hsm.mh_flags &= ~HS_RELEASED;
rc = mdt_object_lock(info, o, lh, MDS_INODELOCK_LAYOUT |
MDS_INODELOCK_XATTR, LCK_EX);
if (rc != 0)
GOTO(out_close, rc);
/* The orphan has root ownership so we need to raise
* CAP_FOWNER to set the HSM attributes. */
cap = uc->uc_cap;
cap_raise(uc->uc_cap, CAP_FOWNER);
rc = mo_xattr_set(info->mti_env, mdt_object_child(orphan), buf,
XATTR_NAME_HSM, 0);
uc->uc_cap = cap;
if (rc != 0)
GOTO(out_layout_lock, rc);
/* Swap layout with orphan objects. */
rc = mo_swap_layouts(info->mti_env, mdt_object_child(o),
mdt_object_child(orphan), 0, 0,
SWAP_LAYOUTS_MDS_RELEASE);
if (!rc && ma->ma_attr_flags & MDS_PCC_ATTACH) {
ma->ma_need = MA_LOV;
rc = mdt_attr_get_complex(info, o, ma);
}
EXIT;
out_layout_lock:
/* Release exclusive LL */
mdt_object_unlock(info, o, lh, 1);
out_close:
/* Close orphan object anyway */
rc2 = mo_close(info->mti_env, mdt_object_child(orphan), orp_ma,
MDS_FMODE_WRITE);
if (rc2 < 0)
CERROR("%s: error closing volatile file "DFID": rc = %d\n",
mdt_obd_name(info->mti_mdt), PFID(&data->cd_fid), rc2);
LU_OBJECT_DEBUG(D_HSM, info->mti_env, &orphan->mot_obj,
"object closed");
mdt_object_put(info->mti_env, orphan);
out_unlock:
up_write(&o->mot_open_sem);
/* already released */
if (rc == 0) {
struct mdt_body *repbody;
repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
LASSERT(repbody != NULL);
repbody->mbo_valid |= OBD_MD_CLOSE_INTENT_EXECED;
if (ma->ma_attr_flags & MDS_PCC_ATTACH) {
LASSERT(ma->ma_valid & MA_LOV);
rc = mdt_get_lmm_gen(ma->ma_lmm,
&repbody->mbo_layout_gen);
if (!rc)
repbody->mbo_valid |= OBD_MD_LAYOUT_VERSION;
}
}
out_reprocess:
ldlm_reprocess_all(lease->l_resource,
lease->l_policy_data.l_inodebits.bits);
ldlm_lock_put(lease);
ma->ma_valid = 0;
ma->ma_need = 0;
return rc;
}
static int mdt_close_handle_layouts(struct mdt_thread_info *info,
struct mdt_object *o, struct md_attr *ma)
{
struct mdt_lock_handle *lh1 = &info->mti_lh[MDT_LH_NEW];
struct mdt_lock_handle *lh2 = &info->mti_lh[MDT_LH_OLD];
struct close_data *data;
struct ldlm_lock *lease;
struct mdt_object *o1 = o, *o2 = NULL;
bool lease_broken;
bool swap_objects = false;
int rc;
ENTRY;
if (exp_connect_flags(info->mti_exp) & OBD_CONNECT_RDONLY)
RETURN(-EROFS);
if (!S_ISREG(lu_object_attr(&o1->mot_obj)))
RETURN(-EINVAL);
data = req_capsule_client_get(info->mti_pill, &RMF_CLOSE_DATA);
if (data == NULL)
RETURN(-EPROTO);
if (req_capsule_req_need_swab(info->mti_pill))
lustre_swab_close_data_special(data, ma->ma_attr_flags);
if (fid_is_zero(&data->cd_fid) || !fid_is_sane(&data->cd_fid))
RETURN(-EINVAL);
rc = lu_fid_cmp(&data->cd_fid, mdt_object_fid(o));
if (rc == 0) {
/**
* only MDS_CLOSE_LAYOUT_SPLIT use the same fid to indicate
* mirror deletion, so we'd zero cd_fid, and keeps o2 be NULL.
*/
if (!(ma->ma_attr_flags & MDS_CLOSE_LAYOUT_SPLIT))
RETURN(-EINVAL);
/* zero cd_fid to keeps o2 be NULL */
fid_zero(&data->cd_fid);
} else if (rc < 0) {
/* Exchange o1 and o2, to enforce locking order */
swap_objects = true;
}
lease = ldlm_handle2lock(&data->cd_handle);
if (lease == NULL)
RETURN(-ESTALE);
if (!fid_is_zero(&data->cd_fid)) {
o2 = mdt_object_find(info->mti_env, info->mti_mdt,
&data->cd_fid);
if (IS_ERR(o2))
GOTO(out_lease, rc = PTR_ERR(o2));
if (!mdt_object_exists(o2))
GOTO(out_obj, rc = -ENOENT);
if (!S_ISREG(lu_object_attr(&o2->mot_obj)))
GOTO(out_obj, rc = -EINVAL);
if (swap_objects)
swap(o1, o2);
}
rc = mo_permission(info->mti_env, NULL, mdt_object_child(o1), NULL,
MAY_WRITE);
if (rc < 0)
GOTO(out_obj, rc);
if (o2) {
rc = mo_permission(info->mti_env, NULL, mdt_object_child(o2),
NULL, MAY_WRITE);
if (rc < 0)
GOTO(out_obj, rc);
}
/* try to hold open_sem so that nobody else can open the file */
if (!down_write_trylock(&o->mot_open_sem)) {
ldlm_lock_cancel(lease);
GOTO(out_obj, rc = -EBUSY);
}
/* Check if the lease open lease has already canceled */
lock_res_and_lock(lease);
lease_broken = (lease->l_flags & LDLM_FL_CANCEL);
unlock_res_and_lock(lease);
LDLM_DEBUG(lease, DFID " lease broken? %d",
PFID(mdt_object_fid(o)), lease_broken);
/* Cancel server side lease. Client side counterpart should
* have been cancelled. It's okay to cancel it now as we've
* held mot_open_sem. */
ldlm_lock_cancel(lease);
if (lease_broken)
GOTO(out_unlock_sem, rc = -ESTALE);
rc = mdt_object_lock(info, o1, lh1, MDS_INODELOCK_LAYOUT |
MDS_INODELOCK_XATTR, LCK_EX);
if (rc < 0)
GOTO(out_unlock_sem, rc);
if (o2) {
rc = mdt_object_lock(info, o2, lh2, MDS_INODELOCK_LAYOUT |
MDS_INODELOCK_XATTR, LCK_EX);
if (rc < 0)
GOTO(out_unlock1, rc);
}
/* Swap layout with orphan object */
if (ma->ma_attr_flags & MDS_CLOSE_LAYOUT_SWAP) {
__u64 dv1 = data->cd_data_version;
__u64 dv2 = 0;
__u64 flags = 0;
if (ma->ma_attr_flags & MDS_CLOSE_LAYOUT_SWAP_HSM) {
/* Compat: new clients send new dataversion in
* cd_data_version2 and old one in cd_data_version.
* Old clients sent cd_data_version = 0 and no
* cd_data_version2.
*/
dv2 = data->cd_data_version2;
flags |= SWAP_LAYOUTS_WITH_DV12;
}
if (swap_objects)
swap(dv1, dv2);
rc = mo_swap_layouts(info->mti_env, mdt_object_child(o1),
mdt_object_child(o2), dv1, dv2, flags);
} else if (ma->ma_attr_flags & MDS_CLOSE_LAYOUT_MERGE ||
ma->ma_attr_flags & MDS_CLOSE_LAYOUT_SPLIT) {
struct lu_buf *buf = &info->mti_buf;
struct md_rejig_data mrd;
if (o2) {
mrd.mrd_obj = mdt_object_child(o == o1 ? o2 : o1);
} else {
if (!(ma->ma_attr_flags & MDS_CLOSE_LAYOUT_SPLIT)) {
/* paranoid check again */
CERROR(DFID
":only mirror split support NULL o2 object\n",
PFID(mdt_object_fid(o)));
GOTO(out_unlock1, rc = -EINVAL);
}
/* set NULL mrd_obj for deleting mirror objects */
mrd.mrd_obj = NULL;
}
if (ma->ma_attr_flags & MDS_CLOSE_LAYOUT_SPLIT) {
mrd.mrd_mirror_id = data->cd_mirror_id;
/* set a small enough blocks in the SoM */
ma->ma_attr.la_blocks >>= 1;
}
buf->lb_len = sizeof(mrd);
buf->lb_buf = &mrd;
rc = mo_xattr_set(info->mti_env, mdt_object_child(o), buf,
XATTR_LUSTRE_LOV,
ma->ma_attr_flags & MDS_CLOSE_LAYOUT_SPLIT ?
LU_XATTR_SPLIT : LU_XATTR_MERGE);
if (rc == 0 && ma->ma_attr.la_valid & (LA_SIZE | LA_BLOCKS |
LA_LSIZE | LA_LBLOCKS)) {
int rc2;
enum lustre_som_flags lsf;
if (ma->ma_attr.la_valid & (LA_SIZE | LA_BLOCKS))
lsf = SOM_FL_STRICT;
else
lsf = SOM_FL_LAZY;
mutex_lock(&o->mot_som_mutex);
rc2 = mdt_set_som(info, o, lsf,
ma->ma_attr.la_size,
ma->ma_attr.la_blocks);
mutex_unlock(&o->mot_som_mutex);
if (rc2 < 0)
CERROR(DFID": Setting i_blocks error: %d, "
"i_blocks will be reported wrongly and "
"can only be fixed in next resync\n",
PFID(mdt_object_fid(o)), rc2);
}
}
if (rc < 0)
GOTO(out_unlock2, rc);
EXIT;
out_unlock2:
/* Release exclusive LL */
if (o2)
mdt_object_unlock(info, o2, lh2, 1);
out_unlock1:
mdt_object_unlock(info, o1, lh1, 1);
out_unlock_sem:
up_write(&o->mot_open_sem);
/* already swapped */
if (rc == 0) {
struct mdt_body *repbody;
repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
LASSERT(repbody != NULL);
repbody->mbo_valid |= OBD_MD_CLOSE_INTENT_EXECED;
}
out_obj:
if (o1 != o)
/* the 2nd object has been used, and swapped to o1 */
mdt_object_put(info->mti_env, o1);
else if (o2)
/* the 2nd object has been used, and not swapped */
mdt_object_put(info->mti_env, o2);
ldlm_reprocess_all(lease->l_resource,
lease->l_policy_data.l_inodebits.bits);
out_lease:
ldlm_lock_put(lease);
if (ma != NULL) {
ma->ma_valid = 0;
ma->ma_need = 0;
}
return rc;
}
static int mdt_close_resync_done(struct mdt_thread_info *info,
struct mdt_object *o, struct md_attr *ma)
{
struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_LOCAL];
struct close_data *data;
struct ldlm_lock *lease;
struct md_layout_change layout = { 0 };
__u32 *resync_ids = NULL;
size_t resync_count = 0;
bool lease_broken;
int rc;
ENTRY;
if (exp_connect_flags(info->mti_exp) & OBD_CONNECT_RDONLY)
RETURN(-EROFS);
if (!S_ISREG(lu_object_attr(&o->mot_obj)))
RETURN(-EINVAL);
data = req_capsule_client_get(info->mti_pill, &RMF_CLOSE_DATA);
if (data == NULL)
RETURN(-EPROTO);
if (req_capsule_req_need_swab(info->mti_pill))
lustre_swab_close_data_special(data, ma->ma_attr_flags);
if (!fid_is_zero(&data->cd_fid))
RETURN(-EPROTO);
lease = ldlm_handle2lock(&data->cd_handle);
if (lease == NULL)
RETURN(-ESTALE);
/* try to hold open_sem so that nobody else can open the file */
if (!down_write_trylock(&o->mot_open_sem)) {
ldlm_lock_cancel(lease);
GOTO(out_reprocess, rc = -EBUSY);
}
/* Check if the lease open lease has already canceled */
lock_res_and_lock(lease);
lease_broken = (lease->l_flags & LDLM_FL_CANCEL);
unlock_res_and_lock(lease);
LDLM_DEBUG(lease, DFID " lease broken? %d",
PFID(mdt_object_fid(o)), lease_broken);
/* Cancel server side lease. Client side counterpart should
* have been cancelled. It's okay to cancel it now as we've
* held mot_open_sem. */
ldlm_lock_cancel(lease);
if (lease_broken) /* don't perform release task */
GOTO(out_unlock, rc = -ESTALE);
resync_count = data->cd_resync.resync_count;
if (resync_count > INLINE_RESYNC_ARRAY_SIZE) {
void *data;
if (!req_capsule_has_field(info->mti_pill, &RMF_U32,
RCL_CLIENT))
GOTO(out_unlock, rc = -EPROTO);
OBD_ALLOC_PTR_ARRAY(resync_ids, resync_count);
if (!resync_ids)
GOTO(out_unlock, rc = -ENOMEM);
data = req_capsule_client_get(info->mti_pill, &RMF_U32);
memcpy(resync_ids, data, resync_count * sizeof(__u32));
layout.mlc_resync_ids = resync_ids;
} else {
layout.mlc_resync_ids = data->cd_resync.resync_ids_inline;
}
layout.mlc_opc = MD_LAYOUT_RESYNC_DONE;
layout.mlc_resync_count = resync_count;
if (ma->ma_attr.la_valid & (LA_SIZE | LA_BLOCKS)) {
layout.mlc_som.lsa_valid = SOM_FL_STRICT;
layout.mlc_som.lsa_size = ma->ma_attr.la_size;
layout.mlc_som.lsa_blocks = ma->ma_attr.la_blocks;
}
rc = mdt_layout_change(info, o, lhc, &layout);
if (rc)
GOTO(out_unlock, rc);
mdt_object_unlock(info, o, lhc, 0);
EXIT;
out_unlock:
up_write(&o->mot_open_sem);
/* already released */
if (rc == 0) {
struct mdt_body *repbody;
repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
LASSERT(repbody != NULL);
repbody->mbo_valid |= OBD_MD_CLOSE_INTENT_EXECED;
}
if (resync_ids)
OBD_FREE_PTR_ARRAY(resync_ids, resync_count);
out_reprocess:
ldlm_reprocess_all(lease->l_resource,
lease->l_policy_data.l_inodebits.bits);
ldlm_lock_put(lease);
ma->ma_valid = 0;
ma->ma_need = 0;
return rc;
}
#define MFD_CLOSED(open_flags) ((open_flags) == MDS_FMODE_CLOSED)
static int mdt_mfd_closed(struct mdt_file_data *mfd)
{
return ((mfd == NULL) || MFD_CLOSED(mfd->mfd_open_flags));
}
int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd)
{
struct mdt_object *o = mfd->mfd_object;
struct md_object *next = mdt_object_child(o);
struct md_attr *ma = &info->mti_attr;
struct lu_fid *ofid = &info->mti_tmp_fid1;
bool rdonly = mdt_rdonly(info->mti_exp);
int rc = 0;
int rc2;
u64 open_flags;
u64 intent;
ENTRY;
open_flags = mfd->mfd_open_flags;
intent = ma->ma_attr_flags & MDS_CLOSE_INTENT;
*ofid = *mdt_object_fid(o);
/* the below message is checked in replay-single.sh test_46 */
CDEBUG(D_INODE, "%s: %sclosing file handle "DFID" with intent: %llx\n",
mdt_obd_name(info->mti_mdt),
ma->ma_valid & MA_FORCE_LOG ? "force " : "", PFID(ofid), intent);
switch (intent) {
case MDS_HSM_RELEASE: {
rc = mdt_hsm_release(info, o, ma);
if (rc < 0) {
CDEBUG(D_HSM, "%s: File " DFID " release failed: %d\n",
mdt_obd_name(info->mti_mdt),
PFID(ofid), rc);
/* continue to close even error occurred. */
}
break;
}
case MDS_CLOSE_LAYOUT_MERGE:
case MDS_CLOSE_LAYOUT_SPLIT:
case MDS_CLOSE_LAYOUT_SWAP: {
rc = mdt_close_handle_layouts(info, o, ma);
if (rc < 0) {
CDEBUG(D_INODE,
"%s: cannot %s layout of "DFID": rc = %d\n",
mdt_obd_name(info->mti_mdt),
intent == MDS_CLOSE_LAYOUT_MERGE ? "merge" :
intent == MDS_CLOSE_LAYOUT_SPLIT ? "split" :
"swap",
PFID(ofid), rc);
/* continue to close even if error occurred. */
}
break;
}
case MDS_CLOSE_RESYNC_DONE:
rc = mdt_close_resync_done(info, o, ma);
if (rc < 0) {
CDEBUG(D_INODE,
"%s: cannot resync layout of "DFID": rc = %d\n",
mdt_obd_name(info->mti_mdt),
PFID(ofid), rc);
/* continue to close even if error occurred. */
}
break;
default:
/* nothing */
break;
}
if (S_ISREG(lu_object_attr(&o->mot_obj)) &&
ma->ma_attr.la_valid & (LA_LSIZE | LA_LBLOCKS) && !rdonly) {
rc2 = mdt_lsom_update(info, o, false);
if (rc2 < 0) {
CDEBUG(D_INODE,
"%s: File " DFID " LSOM failed: rc = %d\n",
mdt_obd_name(info->mti_mdt),
PFID(ofid), rc2);
if (rc == 0)
rc = rc2;
/* continue to close even if error occurred. */
}
}
if (open_flags & MDS_FMODE_WRITE)
mdt_write_put(o);
else if (open_flags & MDS_FMODE_EXEC)
mdt_write_allow(o);
/* Update atime|mtime|ctime on close. */
if ((open_flags & MDS_FMODE_EXEC || open_flags & MDS_FMODE_READ ||
open_flags & MDS_FMODE_WRITE) && (ma->ma_valid & MA_INODE) &&
(ma->ma_attr.la_valid & LA_ATIME ||
ma->ma_attr.la_valid & LA_MTIME ||
ma->ma_attr.la_valid & LA_CTIME) && !rdonly) {
ma->ma_valid = MA_INODE;
ma->ma_attr_flags |= MDS_CLOSE_UPDATE_TIMES;
ma->ma_attr.la_valid &= (LA_ATIME | LA_MTIME | LA_CTIME);
if (ma->ma_attr.la_valid & LA_MTIME) {
if (mdt_attr_get_pfid(info, o, &ma->ma_pfid) == 0)
ma->ma_valid |= MA_PFID;
}
rc2 = mo_attr_set(info->mti_env, next, ma);
if (rc2 != 0) {
CDEBUG(D_INODE,
"%s: File "DFID" set attr (%#llx) failed: rc = %d\n",
mdt_obd_name(info->mti_mdt), PFID(ofid),
ma->ma_attr.la_valid, rc2);
if (rc == 0)
rc = rc2;
}
}
/* If file data is modified, add the dirty flag. */
if (ma->ma_attr_flags & MDS_DATA_MODIFIED) {
rc2 = mdt_add_dirty_flag(info, o, ma);
if (rc2 != 0) {
CDEBUG(D_INODE,
"%s: File "DFID" add dirty flag failed: rc = %d\n",
mdt_obd_name(info->mti_mdt), PFID(ofid), rc2);
if (rc == 0)
rc = rc2;
}
}
ma->ma_need |= MA_INODE;
ma->ma_valid &= ~MA_INODE;
LASSERT(atomic_read(&o->mot_open_count) > 0);
atomic_dec(&o->mot_open_count);
mdt_handle_last_unlink(info, o, ma);
if (!MFD_CLOSED(open_flags)) {
rc2 = mo_close(info->mti_env, next, ma, open_flags);
if (rc2 != 0) {
CDEBUG(D_INODE,
"%s: File "DFID" close failed: rc = %d\n",
mdt_obd_name(info->mti_mdt), PFID(ofid), rc2);
if (rc == 0)
rc = rc2;
}
if (mdt_dom_check_for_discard(info, o))
mdt_dom_discard_data(info, o);
}
/* adjust open and lease count */
if (open_flags & MDS_OPEN_LEASE) {
LASSERT(atomic_read(&o->mot_lease_count) > 0);
atomic_dec(&o->mot_lease_count);
}
mdt_mfd_free(mfd);
mdt_object_put(info->mti_env, o);
RETURN(rc);
}
int mdt_close_internal(struct mdt_thread_info *info, struct ptlrpc_request *req,
struct mdt_body *repbody)
{
struct mdt_export_data *med;
struct mdt_file_data *mfd;
int ret = 0;
int rc = 0;
ENTRY;
med = &req->rq_export->exp_mdt_data;
spin_lock(&med->med_open_lock);
mfd = mdt_open_handle2mfd(med, &info->mti_open_handle,
req_is_replay(req));
if (mdt_mfd_closed(mfd)) {
spin_unlock(&med->med_open_lock);
CDEBUG(D_INODE, "no handle for file close: fid = "DFID
": cookie = %#llx\n", PFID(info->mti_rr.rr_fid1),
info->mti_open_handle.cookie);
/** not serious error since bug 3633 */
rc = -ESTALE;
} else {
class_handle_unhash(&mfd->mfd_open_handle);
list_del_init(&mfd->mfd_list);
spin_unlock(&med->med_open_lock);
ret = mdt_mfd_close(info, mfd);
}
RETURN(rc ? rc : ret);
}
int mdt_close(struct tgt_session_info *tsi)
{
struct mdt_thread_info *info = tsi2mdt_info(tsi);
struct ptlrpc_request *req = tgt_ses_req(tsi);
struct md_attr *ma = &info->mti_attr;
struct mdt_body *repbody = NULL;
ktime_t kstart = ktime_get();
int rc;
int rc2;
ENTRY;
/* Close may come with the Size-on-MDS update. Unpack it. */
rc = mdt_close_unpack(info);
if (rc)
GOTO(out, rc = err_serious(rc));
/* These fields are no longer used and are left for compatibility.
* size is always zero */
req_capsule_set_size(info->mti_pill, &RMF_MDT_MD, RCL_SERVER,
0);
req_capsule_set_size(info->mti_pill, &RMF_LOGCOOKIES, RCL_SERVER,
0);
rc = req_capsule_server_pack(info->mti_pill);
if (mdt_check_resent(info, mdt_reconstruct_generic, NULL)) {
mdt_client_compatibility(info);
if (rc == 0)
mdt_fix_reply(info);
mdt_exit_ucred(info);
GOTO(out, rc = lustre_msg_get_status(req->rq_repmsg));
}
/* Continue to close handle even if we can not pack reply */
if (rc == 0) {
repbody = req_capsule_server_get(info->mti_pill,
&RMF_MDT_BODY);
ma->ma_lmm = req_capsule_server_get(info->mti_pill,
&RMF_MDT_MD);
ma->ma_lmm_size = req_capsule_get_size(info->mti_pill,
&RMF_MDT_MD,
RCL_SERVER);
ma->ma_need = MA_INODE | MA_LOV;
repbody->mbo_eadatasize = 0;
repbody->mbo_aclsize = 0;
} else {
rc = err_serious(rc);
}
rc2 = mdt_close_internal(info, req, repbody);
if (rc2 != -ESTALE)
mdt_empty_transno(info, rc2);
if (rc2 != 0 && rc == 0)
rc = rc2;
if (repbody != NULL) {
mdt_client_compatibility(info);
rc2 = mdt_fix_reply(info);
if (rc2 != 0 && rc == 0)
rc = rc2;
}
mdt_exit_ucred(info);
if (CFS_FAIL_CHECK(OBD_FAIL_MDS_CLOSE_PACK))
GOTO(out, rc = err_serious(-ENOMEM));
if (CFS_FAIL_CHECK_RESET(OBD_FAIL_MDS_CLOSE_NET_REP,
OBD_FAIL_MDS_CLOSE_NET_REP))
tsi->tsi_reply_fail_id = OBD_FAIL_MDS_CLOSE_NET_REP;
out:
mdt_thread_info_fini(info);
if (rc == 0)
mdt_counter_incr(req, LPROC_MDT_CLOSE,
ktime_us_delta(ktime_get(), kstart));
RETURN(rc);
}
