-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * linux/mds/mds_reint.c
- * Lustre Metadata Server (mds) reintegration routines
- *
- * Copyright (C) 2002-2005 Cluster File Systems, Inc.
- * Author: Peter Braam <braam@clusterfs.com>
- * Author: Andreas Dilger <adilger@clusterfs.com>
- * Author: Phil Schwan <phil@clusterfs.com>
- *
- * This file is part of the Lustre file system, http://www.lustre.org
- * Lustre is a trademark of Cluster File Systems, Inc.
- *
- * You may have signed or agreed to another license before downloading
- * this software. If so, you are bound by the terms and conditions
- * of that agreement, and the following does not apply to you. See the
- * LICENSE file included with this distribution for more information.
- *
- * If you did not agree to a different license, then this copy of Lustre
- * is open source software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * In either case, Lustre is distributed in the hope that it will be
- * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * license text for more details.
- */
-
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
-#define DEBUG_SUBSYSTEM S_MDS
-
-#include <linux/fs.h>
-#include <obd_support.h>
-#include <obd_class.h>
-#include <obd.h>
-#include <lustre_lib.h>
-#include <lustre/lustre_idl.h>
-#include <lustre_mds.h>
-#include <lustre_dlm.h>
-#include <lustre_fsfilt.h>
-#include <lustre_ucache.h>
-
-#include "mds_internal.h"
-
-void mds_commit_cb(struct obd_device *obd, __u64 transno, void *data,
- int error)
-{
- obd_transno_commit_cb(obd, transno, error);
-}
-
-struct mds_logcancel_data {
- struct lov_mds_md *mlcd_lmm;
- int mlcd_size;
- int mlcd_cookielen;
- int mlcd_eadatalen;
- struct llog_cookie mlcd_cookies[0];
-};
-
-
-static void mds_cancel_cookies_cb(struct obd_device *obd, __u64 transno,
- void *cb_data, int error)
-{
- struct mds_logcancel_data *mlcd = cb_data;
- struct lov_stripe_md *lsm = NULL;
- struct llog_ctxt *ctxt;
- int rc;
-
- obd_transno_commit_cb(obd, transno, error);
-
- CDEBUG(D_RPCTRACE, "cancelling %d cookies\n",
- (int)(mlcd->mlcd_cookielen / sizeof(*mlcd->mlcd_cookies)));
-
- rc = obd_unpackmd(obd->u.mds.mds_osc_exp, &lsm, mlcd->mlcd_lmm,
- mlcd->mlcd_eadatalen);
- if (rc < 0) {
- CERROR("bad LSM cancelling %d log cookies: rc %d\n",
- (int)(mlcd->mlcd_cookielen/sizeof(*mlcd->mlcd_cookies)),
- rc);
- } else {
- ///* XXX 0 normally, SENDNOW for debug */);
- rc = obd_checkmd(obd->u.mds.mds_osc_exp, obd->obd_self_export,
- lsm);
- if (rc)
- CERROR("Can not revalidate lsm %p \n", lsm);
-
- ctxt = llog_get_context(obd,mlcd->mlcd_cookies[0].lgc_subsys+1);
- rc = llog_cancel(ctxt, lsm, mlcd->mlcd_cookielen /
- sizeof(*mlcd->mlcd_cookies),
- mlcd->mlcd_cookies, OBD_LLOG_FL_SENDNOW);
- llog_ctxt_put(ctxt);
-
- if (rc)
- CERROR("error cancelling %d log cookies: rc %d\n",
- (int)(mlcd->mlcd_cookielen /
- sizeof(*mlcd->mlcd_cookies)), rc);
- }
-
- OBD_FREE(mlcd, mlcd->mlcd_size);
-}
-
-/* Assumes caller has already pushed us into the kernel context. */
-int mds_finish_transno(struct mds_obd *mds, struct inode *inode, void *handle,
- struct ptlrpc_request *req, int rc, __u32 op_data,
- int force_sync)
-{
- struct mds_export_data *med = &req->rq_export->exp_mds_data;
- struct mds_client_data *mcd = med->med_mcd;
- struct obd_device *obd = req->rq_export->exp_obd;
- int err;
- __u64 transno, prev_transno;
- loff_t off;
- int log_pri = D_RPCTRACE;
- ENTRY;
-
- if (IS_ERR(handle)) {
- LASSERT(rc != 0);
- RETURN(rc);
- }
-
- /* if the export has already been failed, we have no last_rcvd slot */
- if (req->rq_export->exp_failed || obd->obd_fail) {
- CWARN("commit transaction for disconnected client %s: rc %d\n",
- req->rq_export->exp_client_uuid.uuid, rc);
- if (rc == 0)
- rc = -ENOTCONN;
- if (handle)
- GOTO(commit, rc);
- RETURN(rc);
- }
-
- if (handle == NULL) {
- /* if we're starting our own xaction, use our own inode */
- inode = mds->mds_rcvd_filp->f_dentry->d_inode;
- handle = fsfilt_start(obd, inode, FSFILT_OP_SETATTR, NULL);
- if (IS_ERR(handle)) {
- CERROR("fsfilt_start: %ld\n", PTR_ERR(handle));
- RETURN(PTR_ERR(handle));
- }
- }
-
- off = med->med_lr_off;
-
- transno = lustre_msg_get_transno(req->rq_reqmsg);
- if (rc != 0) {
- if (transno != 0) {
- CERROR("%s: replay %s transno "LPU64" failed: rc %d\n",
- obd->obd_name,
- libcfs_nid2str(req->rq_export->exp_connection->c_peer.nid),
- transno, rc);
- transno = 0;
- }
- } else if (transno == 0) {
- spin_lock(&mds->mds_transno_lock);
- transno = ++mds->mds_last_transno;
- spin_unlock(&mds->mds_transno_lock);
- } else {
- spin_lock(&mds->mds_transno_lock);
- if (transno > mds->mds_last_transno)
- mds->mds_last_transno = transno;
- spin_unlock(&mds->mds_transno_lock);
- }
-
- req->rq_transno = transno;
- lustre_msg_set_transno(req->rq_repmsg, transno);
- if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE) {
- prev_transno = le64_to_cpu(mcd->mcd_last_close_transno);
- mcd->mcd_last_close_transno = cpu_to_le64(transno);
- mcd->mcd_last_close_xid = cpu_to_le64(req->rq_xid);
- mcd->mcd_last_close_result = cpu_to_le32(rc);
- mcd->mcd_last_close_data = cpu_to_le32(op_data);
- } else {
- prev_transno = le64_to_cpu(mcd->mcd_last_transno);
- if (((lustre_msg_get_flags(req->rq_reqmsg) &
- (MSG_RESENT | MSG_REPLAY)) == 0) ||
- (transno > prev_transno)) {
- mcd->mcd_last_transno = cpu_to_le64(transno);
- mcd->mcd_last_xid = cpu_to_le64(req->rq_xid);
- mcd->mcd_last_result = cpu_to_le32(rc);
- mcd->mcd_last_data = cpu_to_le32(op_data);
- }
- }
- /* update the server data to not lose the greatest transno. Bug 11125 */
- if ((transno == 0) && (prev_transno == mds->mds_last_transno))
- mds_update_server_data(obd, 0);
-
- if (off <= 0) {
- CERROR("client idx %d has offset %lld\n", med->med_lr_idx, off);
- err = -EINVAL;
- } else {
- struct obd_export *exp = req->rq_export;
-
- if (!force_sync)
- force_sync = fsfilt_add_journal_cb(exp->exp_obd,transno,
- handle, mds_commit_cb,
- NULL);
-
- err = fsfilt_write_record(obd, mds->mds_rcvd_filp, mcd,
- sizeof(*mcd), &off,
- force_sync | exp->exp_need_sync);
- if (force_sync)
- mds_commit_cb(obd, transno, NULL, err);
- }
-
- if (err) {
- log_pri = D_ERROR;
- if (rc == 0)
- rc = err;
- }
-
- DEBUG_REQ(log_pri, req,
- "wrote trans #"LPU64" rc %d client %s at idx %u: err = %d",
- transno, rc, mcd->mcd_uuid, med->med_lr_idx, err);
-
- err = mds_lov_write_objids(obd);
- if (err) {
- log_pri = D_ERROR;
- if (rc == 0)
- rc = err;
- }
- CDEBUG(log_pri, "wrote objids: err = %d\n", err);
-
-commit:
- err = fsfilt_commit(obd, inode, handle, 0);
- if (err) {
- CERROR("error committing transaction: %d\n", err);
- if (!rc)
- rc = err;
- }
-
- RETURN(rc);
-}
-
-/* this gives the same functionality as the code between
- * sys_chmod and inode_setattr
- * chown_common and inode_setattr
- * utimes and inode_setattr
- */
-int mds_fix_attr(struct inode *inode, struct mds_update_record *rec)
-{
- time_t now = cfs_time_current_sec();
- struct iattr *attr = &rec->ur_iattr;
- unsigned int ia_valid = attr->ia_valid;
- int error;
- ENTRY;
-
- if (ia_valid & ATTR_RAW)
- attr->ia_valid &= ~ATTR_RAW;
-
- if (!(ia_valid & ATTR_CTIME_SET))
- LTIME_S(attr->ia_ctime) = now;
- else
- attr->ia_valid &= ~ATTR_CTIME_SET;
- if (!(ia_valid & ATTR_ATIME_SET))
- LTIME_S(attr->ia_atime) = now;
- if (!(ia_valid & ATTR_MTIME_SET))
- LTIME_S(attr->ia_mtime) = now;
-
- if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
- RETURN((attr->ia_valid & ~ATTR_ATTR_FLAG) ? -EPERM : 0);
-
- /* times */
- if ((ia_valid & (ATTR_MTIME|ATTR_ATIME)) == (ATTR_MTIME|ATTR_ATIME)) {
- if (current->fsuid != inode->i_uid &&
- (error = ll_permission(inode, MAY_WRITE, NULL)) != 0)
- RETURN(error);
- }
-
- if (ia_valid & ATTR_SIZE &&
- /* NFSD hack for open(O_CREAT|O_TRUNC)=mknod+truncate (bug 5781) */
- !(rec->ur_uc.luc_fsuid == inode->i_uid &&
- ia_valid & MDS_OPEN_OWNEROVERRIDE)) {
- if ((error = ll_permission(inode, MAY_WRITE, NULL)) != 0)
- RETURN(error);
- }
-
- if (ia_valid & (ATTR_UID | ATTR_GID)) {
- /* chown */
- error = -EPERM;
- if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
- RETURN(-EPERM);
- if (attr->ia_uid == (uid_t) -1)
- attr->ia_uid = inode->i_uid;
- if (attr->ia_gid == (gid_t) -1)
- attr->ia_gid = inode->i_gid;
- if (!(ia_valid & ATTR_MODE))
- attr->ia_mode = inode->i_mode;
- /*
- * If the user or group of a non-directory has been
- * changed by a non-root user, remove the setuid bit.
- * 19981026 David C Niemi <niemi@tux.org>
- *
- * Changed this to apply to all users, including root,
- * to avoid some races. This is the behavior we had in
- * 2.0. The check for non-root was definitely wrong
- * for 2.2 anyway, as it should have been using
- * CAP_FSETID rather than fsuid -- 19990830 SD.
- */
- if ((inode->i_mode & S_ISUID) == S_ISUID &&
- !S_ISDIR(inode->i_mode)) {
- attr->ia_mode &= ~S_ISUID;
- attr->ia_valid |= ATTR_MODE;
- }
- /*
- * Likewise, if the user or group of a non-directory
- * has been changed by a non-root user, remove the
- * setgid bit UNLESS there is no group execute bit
- * (this would be a file marked for mandatory
- * locking). 19981026 David C Niemi <niemi@tux.org>
- *
- * Removed the fsuid check (see the comment above) --
- * 19990830 SD.
- */
- if (((inode->i_mode & (S_ISGID | S_IXGRP)) ==
- (S_ISGID | S_IXGRP)) && !S_ISDIR(inode->i_mode)) {
- attr->ia_mode &= ~S_ISGID;
- attr->ia_valid |= ATTR_MODE;
- }
- } else if (ia_valid & ATTR_MODE) {
- int mode = attr->ia_mode;
- /* chmod */
- if (attr->ia_mode == (umode_t)-1)
- mode = inode->i_mode;
- attr->ia_mode =
- (mode & S_IALLUGO) | (inode->i_mode & ~S_IALLUGO);
- }
- RETURN(0);
-}
-
-void mds_steal_ack_locks(struct ptlrpc_request *req)
-{
- struct obd_export *exp = req->rq_export;
- struct list_head *tmp;
- struct ptlrpc_reply_state *oldrep;
- struct ptlrpc_service *svc;
- int i;
-
- /* CAVEAT EMPTOR: spinlock order */
- spin_lock(&exp->exp_lock);
- list_for_each (tmp, &exp->exp_outstanding_replies) {
- oldrep = list_entry(tmp, struct ptlrpc_reply_state,rs_exp_list);
-
- if (oldrep->rs_xid != req->rq_xid)
- continue;
-
- if (lustre_msg_get_opc(oldrep->rs_msg) !=
- lustre_msg_get_opc(req->rq_reqmsg))
- CERROR ("Resent req xid "LPX64" has mismatched opc: "
- "new %d old %d\n", req->rq_xid,
- lustre_msg_get_opc(req->rq_reqmsg),
- lustre_msg_get_opc(oldrep->rs_msg));
-
- svc = oldrep->rs_service;
- spin_lock (&svc->srv_lock);
-
- list_del_init (&oldrep->rs_exp_list);
-
- CWARN("Stealing %d locks from rs %p x"LPD64".t"LPD64
- " o%d NID %s\n",
- oldrep->rs_nlocks, oldrep,
- oldrep->rs_xid, oldrep->rs_transno,
- lustre_msg_get_opc(oldrep->rs_msg),
- libcfs_nid2str(exp->exp_connection->c_peer.nid));
-
- for (i = 0; i < oldrep->rs_nlocks; i++)
- ptlrpc_save_lock(req,
- &oldrep->rs_locks[i],
- oldrep->rs_modes[i]);
- oldrep->rs_nlocks = 0;
-
- DEBUG_REQ(D_HA, req, "stole locks for");
- ptlrpc_schedule_difficult_reply (oldrep);
-
- spin_unlock (&svc->srv_lock);
- break;
- }
- spin_unlock(&exp->exp_lock);
-}
-EXPORT_SYMBOL(mds_steal_ack_locks);
-void mds_req_from_mcd(struct ptlrpc_request *req, struct mds_client_data *mcd)
-{
- if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE) {
- req->rq_transno = le64_to_cpu(mcd->mcd_last_close_transno);
- lustre_msg_set_transno(req->rq_repmsg, req->rq_transno);
- req->rq_status = le32_to_cpu(mcd->mcd_last_close_result);
- lustre_msg_set_status(req->rq_repmsg, req->rq_status);
- } else {
- req->rq_transno = le64_to_cpu(mcd->mcd_last_transno);
- lustre_msg_set_transno(req->rq_repmsg, req->rq_transno);
- req->rq_status = le32_to_cpu(mcd->mcd_last_result);
- lustre_msg_set_status(req->rq_repmsg, req->rq_status);
- }
- DEBUG_REQ(D_HA, req, "restoring transno "LPD64"/status %d",
- req->rq_transno, req->rq_status);
-
- mds_steal_ack_locks(req);
-}
-
-static void reconstruct_reint_setattr(struct mds_update_record *rec,
- int offset, struct ptlrpc_request *req)
-{
- struct mds_export_data *med = &req->rq_export->exp_mds_data;
- struct mds_obd *obd = &req->rq_export->exp_obd->u.mds;
- struct dentry *de;
- struct mds_body *body;
-
- mds_req_from_mcd(req, med->med_mcd);
-
- de = mds_fid2dentry(obd, rec->ur_fid1, NULL);
- if (IS_ERR(de)) {
- LASSERT(PTR_ERR(de) == req->rq_status);
- return;
- }
-
- body = lustre_msg_buf(req->rq_repmsg, offset, sizeof(*body));
- mds_pack_inode2fid(&body->fid1, de->d_inode);
- mds_pack_inode2body(body, de->d_inode);
-
- /* Don't return OST-specific attributes if we didn't just set them */
- if (rec->ur_iattr.ia_valid & ATTR_SIZE)
- body->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
- if (rec->ur_iattr.ia_valid & (ATTR_MTIME | ATTR_MTIME_SET))
- body->valid |= OBD_MD_FLMTIME;
- if (rec->ur_iattr.ia_valid & (ATTR_ATIME | ATTR_ATIME_SET))
- body->valid |= OBD_MD_FLATIME;
-
- l_dput(de);
-}
-
-int mds_osc_setattr_async(struct obd_device *obd, __u32 uid, __u32 gid,
- struct lov_mds_md *lmm, int lmm_size,
- struct llog_cookie *logcookies, __u64 id, __u32 gen,
- struct obd_capa *oc)
-{
- struct mds_obd *mds = &obd->u.mds;
- struct obd_trans_info oti = { 0 };
- struct obd_info oinfo = { { { 0 } } };
- int rc;
- ENTRY;
-
- if (OBD_FAIL_CHECK(OBD_FAIL_MDS_OST_SETATTR))
- RETURN(0);
-
- /* first get memory EA */
- OBDO_ALLOC(oinfo.oi_oa);
- if (!oinfo.oi_oa)
- RETURN(-ENOMEM);
-
- LASSERT(lmm);
-
- rc = obd_unpackmd(mds->mds_osc_exp, &oinfo.oi_md, lmm, lmm_size);
- if (rc < 0) {
- CERROR("Error unpack md %p for inode "LPU64"\n", lmm, id);
- GOTO(out, rc);
- }
-
- rc = obd_checkmd(mds->mds_osc_exp, obd->obd_self_export, oinfo.oi_md);
- if (rc) {
- CERROR("Error revalidate lsm %p \n", oinfo.oi_md);
- GOTO(out, rc);
- }
-
- /* then fill oa */
- oinfo.oi_oa->o_uid = uid;
- oinfo.oi_oa->o_gid = gid;
- oinfo.oi_oa->o_id = oinfo.oi_md->lsm_object_id;
- oinfo.oi_oa->o_gr = oinfo.oi_md->lsm_object_gr;
- oinfo.oi_oa->o_valid |= OBD_MD_FLID | OBD_MD_FLGROUP |
- OBD_MD_FLUID | OBD_MD_FLGID;
- if (logcookies) {
- oinfo.oi_oa->o_valid |= OBD_MD_FLCOOKIE;
- oti.oti_logcookies = logcookies;
- }
-
- oinfo.oi_oa->o_fid = id;
- oinfo.oi_oa->o_generation = gen;
- oinfo.oi_oa->o_valid |= OBD_MD_FLFID | OBD_MD_FLGENER;
- oinfo.oi_capa = oc;
-
- /* do async setattr from mds to ost not waiting for responses. */
- rc = obd_setattr_async(mds->mds_osc_exp, &oinfo, &oti, NULL);
- if (rc)
- CDEBUG(D_INODE, "mds to ost setattr objid 0x"LPX64
- " on ost error %d\n", oinfo.oi_md->lsm_object_id, rc);
-out:
- if (oinfo.oi_md)
- obd_free_memmd(mds->mds_osc_exp, &oinfo.oi_md);
- OBDO_FREE(oinfo.oi_oa);
- RETURN(rc);
-}
-EXPORT_SYMBOL(mds_osc_setattr_async);
-
-/* In the raw-setattr case, we lock the child inode.
- * In the write-back case or if being called from open, the client holds a lock
- * already.
- *
- * We use the ATTR_FROM_OPEN flag to tell these cases apart. */
-static int mds_reint_setattr(struct mds_update_record *rec, int offset,
- struct ptlrpc_request *req,
- struct lustre_handle *lh)
-{
- unsigned int ia_valid = rec->ur_iattr.ia_valid;
- struct mds_obd *mds = mds_req2mds(req);
- struct obd_device *obd = req->rq_export->exp_obd;
- struct mds_body *body;
- struct dentry *de;
- struct inode *inode = NULL;
- struct lustre_handle lockh;
- void *handle = NULL;
- struct mds_logcancel_data *mlcd = NULL;
- struct lov_mds_md *lmm = NULL;
- struct llog_cookie *logcookies = NULL;
- int lmm_size = 0, need_lock = 1, cookie_size = 0;
- int rc = 0, cleanup_phase = 0, err, locked = 0, sync = 0;
- unsigned int qcids[MAXQUOTAS] = { 0, 0 };
- unsigned int qpids[MAXQUOTAS] = { rec->ur_iattr.ia_uid,
- rec->ur_iattr.ia_gid };
- ENTRY;
-
- LASSERT(offset == REQ_REC_OFF);
- offset = REPLY_REC_OFF;
-
- DEBUG_REQ(D_INODE, req, "setattr "LPU64"/%u %x", rec->ur_fid1->id,
- rec->ur_fid1->generation, rec->ur_iattr.ia_valid);
- OBD_COUNTER_INCREMENT(obd, setattr);
-
- MDS_CHECK_RESENT(req, reconstruct_reint_setattr(rec, offset, req));
-
- if (rec->ur_dlm)
- ldlm_request_cancel(req, rec->ur_dlm, 0);
-
- if (rec->ur_iattr.ia_valid & ATTR_FROM_OPEN ||
- (req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY)) {
- de = mds_fid2dentry(mds, rec->ur_fid1, NULL);
- if (IS_ERR(de))
- GOTO(cleanup, rc = PTR_ERR(de));
- if (req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY)
- GOTO(cleanup, rc = -EROFS);
- } else {
- __u64 lockpart = MDS_INODELOCK_UPDATE;
- if (rec->ur_iattr.ia_valid & (ATTR_MODE|ATTR_UID|ATTR_GID))
- lockpart |= MDS_INODELOCK_LOOKUP;
-
- de = mds_fid2locked_dentry(obd, rec->ur_fid1, NULL, LCK_EX,
- &lockh, lockpart);
- if (IS_ERR(de))
- GOTO(cleanup, rc = PTR_ERR(de));
- locked = 1;
- }
-
- cleanup_phase = 1;
- inode = de->d_inode;
- LASSERT(inode);
-
- if ((rec->ur_iattr.ia_valid & ATTR_FROM_OPEN) ||
- (rec->ur_iattr.ia_valid & ATTR_SIZE)) {
- /* Check write access for the O_TRUNC case */
- if (mds_query_write_access(inode) < 0)
- GOTO(cleanup, rc = -ETXTBSY);
- }
-
- /* save uid/gid for quota acq/rel */
- qcids[USRQUOTA] = inode->i_uid;
- qcids[GRPQUOTA] = inode->i_gid;
-
- if ((S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)) &&
- rec->ur_eadata != NULL) {
- LOCK_INODE_MUTEX(inode);
- need_lock = 0;
- }
-
- OBD_FAIL_WRITE(OBD_FAIL_MDS_REINT_SETATTR_WRITE, inode->i_sb);
-
- /* start a log jounal handle if needed */
- if (S_ISREG(inode->i_mode) &&
- rec->ur_iattr.ia_valid & (ATTR_UID | ATTR_GID)) {
- lmm_size = mds->mds_max_mdsize;
- OBD_ALLOC(lmm, lmm_size);
- if (lmm == NULL)
- GOTO(cleanup, rc = -ENOMEM);
-
- cleanup_phase = 2;
- rc = mds_get_md(obd, inode, lmm, &lmm_size, need_lock);
- if (rc < 0)
- GOTO(cleanup, rc);
- rc = 0;
-
- handle = fsfilt_start_log(obd, inode, FSFILT_OP_SETATTR, NULL,
- le32_to_cpu(lmm->lmm_stripe_count));
- } else {
- handle = fsfilt_start(obd, inode, FSFILT_OP_SETATTR, NULL);
- }
- if (IS_ERR(handle))
- GOTO(cleanup, rc = PTR_ERR(handle));
-
- if (rec->ur_iattr.ia_valid & (ATTR_MTIME | ATTR_CTIME))
- CDEBUG(D_INODE, "setting mtime %lu, ctime %lu\n",
- LTIME_S(rec->ur_iattr.ia_mtime),
- LTIME_S(rec->ur_iattr.ia_ctime));
- rc = mds_fix_attr(inode, rec);
- if (rc)
- GOTO(cleanup, rc);
-
- if (rec->ur_iattr.ia_valid & ATTR_ATTR_FLAG) { /* ioctl */
- rc = fsfilt_iocontrol(obd, inode, NULL, EXT3_IOC_SETFLAGS,
- (long)&rec->ur_flags);
- } else if (rec->ur_iattr.ia_valid) { /* setattr */
- rc = fsfilt_setattr(obd, de, handle, &rec->ur_iattr, 0);
- /* journal chown/chgrp in llog, just like unlink */
- if (rc == 0 && lmm_size){
- cookie_size = mds_get_cookie_size(obd, lmm);
- OBD_ALLOC(logcookies, cookie_size);
- if (logcookies == NULL)
- GOTO(cleanup, rc = -ENOMEM);
-
- if (mds_log_op_setattr(obd, inode->i_uid, inode->i_gid,
- lmm, lmm_size,
- logcookies, cookie_size) <= 0) {
- OBD_FREE(logcookies, cookie_size);
- logcookies = NULL;
- }
- }
- }
-
- if (rc == 0 && (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)) &&
- rec->ur_eadata != NULL) {
- struct lov_stripe_md *lsm = NULL;
- struct lov_user_md *lum = NULL;
-
- rc = ll_permission(inode, MAY_WRITE, NULL);
- if (rc < 0)
- GOTO(cleanup, rc);
-
- lum = rec->ur_eadata;
- /* if { size, offset, count } = { 0, -1, 0 } (i.e. all default
- * values specified) then delete default striping from dir. */
- if (S_ISDIR(inode->i_mode) &&
- ((lum->lmm_stripe_size == 0 &&
- lum->lmm_stripe_offset ==
- (typeof(lum->lmm_stripe_offset))(-1) &&
- lum->lmm_stripe_count == 0) ||
- /* lmm_stripe_size == -1 is deprecated in 1.4.6 */
- lum->lmm_stripe_size ==
- (typeof(lum->lmm_stripe_size))(-1))){
- rc = fsfilt_set_md(obd, inode, handle, NULL, 0, "lov");
- if (rc)
- GOTO(cleanup, rc);
- } else {
- rc = obd_iocontrol(OBD_IOC_LOV_SETSTRIPE,
- mds->mds_osc_exp, 0,
- &lsm, rec->ur_eadata);
- if (rc)
- GOTO(cleanup, rc);
-
- obd_free_memmd(mds->mds_osc_exp, &lsm);
-
- rc = fsfilt_set_md(obd, inode, handle, rec->ur_eadata,
- rec->ur_eadatalen, "lov");
- if (rc)
- GOTO(cleanup, rc);
- }
- }
-
- body = lustre_msg_buf(req->rq_repmsg, offset, sizeof(*body));
- mds_pack_inode2fid(&body->fid1, inode);
- mds_pack_inode2body(body, inode);
-
- /* don't return OST-specific attributes if we didn't just set them. */
- if (ia_valid & ATTR_SIZE)
- body->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
- if (ia_valid & (ATTR_MTIME | ATTR_MTIME_SET))
- body->valid |= OBD_MD_FLMTIME;
- if (ia_valid & (ATTR_ATIME | ATTR_ATIME_SET))
- body->valid |= OBD_MD_FLATIME;
-
- if (rc == 0 && rec->ur_cookielen && !IS_ERR(mds->mds_osc_obd)) {
- OBD_ALLOC(mlcd, sizeof(*mlcd) + rec->ur_cookielen +
- rec->ur_eadatalen);
- if (mlcd) {
- mlcd->mlcd_size = sizeof(*mlcd) + rec->ur_cookielen +
- rec->ur_eadatalen;
- mlcd->mlcd_eadatalen = rec->ur_eadatalen;
- mlcd->mlcd_cookielen = rec->ur_cookielen;
- mlcd->mlcd_lmm = (void *)&mlcd->mlcd_cookies +
- mlcd->mlcd_cookielen;
- memcpy(&mlcd->mlcd_cookies, rec->ur_logcookies,
- mlcd->mlcd_cookielen);
- memcpy(mlcd->mlcd_lmm, rec->ur_eadata,
- mlcd->mlcd_eadatalen);
- } else {
- CERROR("unable to allocate log cancel data\n");
- }
- }
- EXIT;
- cleanup:
- if (mlcd != NULL)
- sync = fsfilt_add_journal_cb(req->rq_export->exp_obd, 0, handle,
- mds_cancel_cookies_cb, mlcd);
- err = mds_finish_transno(mds, inode, handle, req, rc, 0, sync);
- /* do mds to ost setattr if needed */
- if (!rc && !err && lmm_size)
- mds_osc_setattr_async(obd, inode->i_ino, inode->i_generation, lmm,
- lmm_size, logcookies, rec->ur_fid1->id,
- rec->ur_fid1->generation, NULL);
-
- switch (cleanup_phase) {
- case 2:
- OBD_FREE(lmm, mds->mds_max_mdsize);
- if (logcookies)
- OBD_FREE(logcookies, cookie_size);
- case 1:
- if ((S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)) &&
- rec->ur_eadata != NULL)
- UNLOCK_INODE_MUTEX(inode);
- l_dput(de);
- if (locked) {
- if (rc) {
- ldlm_lock_decref(&lockh, LCK_EX);
- } else {
- ptlrpc_save_lock (req, &lockh, LCK_EX);
- }
- }
- case 0:
- break;
- default:
- LBUG();
- }
- if (err && !rc)
- rc = err;
-
- req->rq_status = rc;
-
- /* trigger dqrel/dqacq for original owner and new owner */
- if (ia_valid & (ATTR_UID | ATTR_GID))
- lquota_adjust(mds_quota_interface_ref, obd, qcids, qpids, rc,
- FSFILT_OP_SETATTR);
-
- return 0;
-}
-
-static void reconstruct_reint_create(struct mds_update_record *rec, int offset,
- struct ptlrpc_request *req)
-{
- struct mds_export_data *med = &req->rq_export->exp_mds_data;
- struct mds_obd *obd = &req->rq_export->exp_obd->u.mds;
- struct dentry *parent, *child;
- struct mds_body *body;
-
- mds_req_from_mcd(req, med->med_mcd);
-
- if (req->rq_status)
- return;
-
- parent = mds_fid2dentry(obd, rec->ur_fid1, NULL);
- LASSERT(!IS_ERR(parent));
- child = ll_lookup_one_len(rec->ur_name, parent, rec->ur_namelen - 1);
- LASSERT(!IS_ERR(child));
-
- body = lustre_msg_buf(req->rq_repmsg, offset, sizeof(*body));
- mds_pack_inode2fid(&body->fid1, child->d_inode);
- mds_pack_inode2body(body, child->d_inode);
-
- l_dput(parent);
- l_dput(child);
-}
-
-static int mds_reint_create(struct mds_update_record *rec, int offset,
- struct ptlrpc_request *req,
- struct lustre_handle *lh)
-{
- struct dentry *dparent = NULL;
- struct mds_obd *mds = mds_req2mds(req);
- struct obd_device *obd = req->rq_export->exp_obd;
- struct dentry *dchild = NULL;
- struct inode *dir = NULL;
- void *handle = NULL;
- struct lustre_handle lockh;
- int rc = 0, err, type = rec->ur_mode & S_IFMT, cleanup_phase = 0;
- int created = 0;
- unsigned int qcids[MAXQUOTAS] = { current->fsuid, current->fsgid };
- unsigned int qpids[MAXQUOTAS] = { 0, 0 };
- struct lvfs_dentry_params dp = LVFS_DENTRY_PARAMS_INIT;
- ENTRY;
-
- LASSERT(offset == REQ_REC_OFF);
- offset = REPLY_REC_OFF;
-
- LASSERT(!strcmp(req->rq_export->exp_obd->obd_type->typ_name,
- LUSTRE_MDS_NAME));
-
- DEBUG_REQ(D_INODE, req, "parent "LPU64"/%u name %s mode %o",
- rec->ur_fid1->id, rec->ur_fid1->generation,
- rec->ur_name, rec->ur_mode);
-
- MDS_CHECK_RESENT(req, reconstruct_reint_create(rec, offset, req));
-
- if (OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_CREATE))
- GOTO(cleanup, rc = -ESTALE);
-
- if (rec->ur_dlm)
- ldlm_request_cancel(req, rec->ur_dlm, 0);
-
- dparent = mds_fid2locked_dentry(obd, rec->ur_fid1, NULL, LCK_EX, &lockh,
- MDS_INODELOCK_UPDATE);
- if (IS_ERR(dparent)) {
- rc = PTR_ERR(dparent);
- if (rc != -ENOENT)
- CERROR("parent "LPU64"/%u lookup error %d\n",
- rec->ur_fid1->id, rec->ur_fid1->generation, rc);
- GOTO(cleanup, rc);
- }
- cleanup_phase = 1; /* locked parent dentry */
- dir = dparent->d_inode;
- LASSERT(dir);
-
- ldlm_lock_dump_handle(D_OTHER, &lockh);
-
- dchild = ll_lookup_one_len(rec->ur_name, dparent, rec->ur_namelen - 1);
- if (IS_ERR(dchild)) {
- rc = PTR_ERR(dchild);
- if (rc != -ENAMETOOLONG)
- CERROR("child lookup error %d\n", rc);
- GOTO(cleanup, rc);
- }
-
- cleanup_phase = 2; /* child dentry */
-
- OBD_FAIL_WRITE(OBD_FAIL_MDS_REINT_CREATE_WRITE, dir->i_sb);
-
- if (req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY) {
- if (dchild->d_inode)
- GOTO(cleanup, rc = -EEXIST);
- GOTO(cleanup, rc = -EROFS);
- }
-
- if (dir->i_mode & S_ISGID && S_ISDIR(rec->ur_mode))
- rec->ur_mode |= S_ISGID;
-
- dchild->d_fsdata = (void *)&dp;
- dp.ldp_inum = (unsigned long)rec->ur_fid2->id;
- dp.ldp_ptr = req;
-
- switch (type) {
- case S_IFREG:{
- handle = fsfilt_start(obd, dir, FSFILT_OP_CREATE, NULL);
- if (IS_ERR(handle))
- GOTO(cleanup, rc = PTR_ERR(handle));
- rc = ll_vfs_create(dir, dchild, rec->ur_mode, NULL);
- mds_counter_incr(req->rq_export, LPROC_MDS_MKNOD);
- EXIT;
- break;
- }
- case S_IFDIR:{
- handle = fsfilt_start(obd, dir, FSFILT_OP_MKDIR, NULL);
- if (IS_ERR(handle))
- GOTO(cleanup, rc = PTR_ERR(handle));
- rc = vfs_mkdir(dir, dchild, rec->ur_mode);
- mds_counter_incr(req->rq_export, LPROC_MDS_MKDIR);
- EXIT;
- break;
- }
- case S_IFLNK:{
- handle = fsfilt_start(obd, dir, FSFILT_OP_SYMLINK, NULL);
- if (IS_ERR(handle))
- GOTO(cleanup, rc = PTR_ERR(handle));
- if (rec->ur_tgt == NULL) /* no target supplied */
- rc = -EINVAL; /* -EPROTO? */
- else
- rc = ll_vfs_symlink(dir, dchild, rec->ur_tgt, S_IALLUGO);
- mds_counter_incr(req->rq_export, LPROC_MDS_MKNOD);
- EXIT;
- break;
- }
- case S_IFCHR:
- case S_IFBLK:
- case S_IFIFO:
- case S_IFSOCK:{
- int rdev = rec->ur_rdev;
- handle = fsfilt_start(obd, dir, FSFILT_OP_MKNOD, NULL);
- if (IS_ERR(handle))
- GOTO(cleanup, rc = PTR_ERR(handle));
- rc = vfs_mknod(dir, dchild, rec->ur_mode, rdev);
- mds_counter_incr(req->rq_export, LPROC_MDS_MKNOD);
- EXIT;
- break;
- }
- default:
- CERROR("bad file type %o creating %s\n", type, rec->ur_name);
- dchild->d_fsdata = NULL;
- GOTO(cleanup, rc = -EINVAL);
- }
-
- /* In case we stored the desired inum in here, we want to clean up. */
- if (dchild->d_fsdata == (void *)(unsigned long)rec->ur_fid2->id)
- dchild->d_fsdata = NULL;
-
- if (rc) {
- CDEBUG(D_INODE, "error during create: %d\n", rc);
- GOTO(cleanup, rc);
- } else {
- struct iattr iattr;
- struct inode *inode = dchild->d_inode;
- struct mds_body *body;
-
- created = 1;
- LTIME_S(iattr.ia_atime) = rec->ur_time;
- LTIME_S(iattr.ia_ctime) = rec->ur_time;
- LTIME_S(iattr.ia_mtime) = rec->ur_time;
- iattr.ia_uid = current->fsuid; /* set by push_ctxt already */
- if (dir->i_mode & S_ISGID)
- iattr.ia_gid = dir->i_gid;
- else
- iattr.ia_gid = current->fsgid;
- iattr.ia_valid = ATTR_UID | ATTR_GID | ATTR_ATIME |
- ATTR_MTIME | ATTR_CTIME;
-
- if (rec->ur_fid2->id) {
- LASSERT(rec->ur_fid2->id == inode->i_ino);
- inode->i_generation = rec->ur_fid2->generation;
- /* Dirtied and committed by the upcoming setattr. */
- CDEBUG(D_INODE, "recreated ino %lu with gen %u\n",
- inode->i_ino, inode->i_generation);
- } else {
- CDEBUG(D_INODE, "created ino %lu with gen %x\n",
- inode->i_ino, inode->i_generation);
- }
-
- rc = fsfilt_setattr(obd, dchild, handle, &iattr, 0);
- if (rc)
- CERROR("error on child setattr: rc = %d\n", rc);
-
- iattr.ia_valid = ATTR_MTIME | ATTR_CTIME;
- rc = fsfilt_setattr(obd, dparent, handle, &iattr, 0);
- if (rc)
- CERROR("error on parent setattr: rc = %d\n", rc);
-
- if (S_ISDIR(inode->i_mode)) {
- struct lov_mds_md lmm;
- int lmm_size = sizeof(lmm);
- rc = mds_get_md(obd, dir, &lmm, &lmm_size, 1);
- if (rc > 0) {
- LOCK_INODE_MUTEX(inode);
- rc = fsfilt_set_md(obd, inode, handle,
- &lmm, lmm_size, "lov");
- UNLOCK_INODE_MUTEX(inode);
- }
- if (rc)
- CERROR("error on copy stripe info: rc = %d\n",
- rc);
- }
-
- body = lustre_msg_buf(req->rq_repmsg, offset, sizeof(*body));
- mds_pack_inode2fid(&body->fid1, inode);
- mds_pack_inode2body(body, inode);
- }
- EXIT;
-
-cleanup:
- err = mds_finish_transno(mds, dir, handle, req, rc, 0, 0);
-
- if (rc && created) {
- /* Destroy the file we just created. This should not need
- * extra journal credits, as we have already modified all of
- * the blocks needed in order to create the file in the first
- * place.
- */
- switch (type) {
- case S_IFDIR:
- err = vfs_rmdir(dir, dchild);
- if (err)
- CERROR("rmdir in error path: %d\n", err);
- break;
- default:
- err = vfs_unlink(dir, dchild);
- if (err)
- CERROR("unlink in error path: %d\n", err);
- break;
- }
- } else if (created) {
- /* The inode we were allocated may have just been freed
- * by an unlink operation. We take this lock to
- * synchronize against the matching reply-ack-lock taken
- * in unlink, to avoid replay problems if this reply
- * makes it out to the client but the unlink's does not.
- * See bug 2029 for more detail.*/
- mds_lock_new_child(obd, dchild->d_inode, NULL);
- /* save uid/gid of create inode and parent */
- qpids[USRQUOTA] = dir->i_uid;
- qpids[GRPQUOTA] = dir->i_gid;
- } else {
- rc = err;
- }
-
- switch (cleanup_phase) {
- case 2: /* child dentry */
- l_dput(dchild);
- case 1: /* locked parent dentry */
- if (rc) {
- ldlm_lock_decref(&lockh, LCK_EX);
- } else {
- ptlrpc_save_lock (req, &lockh, LCK_EX);
- }
- l_dput(dparent);
- case 0:
- break;
- default:
- CERROR("invalid cleanup_phase %d\n", cleanup_phase);
- LBUG();
- }
- req->rq_status = rc;
-
- /* trigger dqacq on the owner of child and parent */
- lquota_adjust(mds_quota_interface_ref, obd, qcids, qpids, rc,
- FSFILT_OP_CREATE);
- return 0;
-}
-
-int res_gt(const struct ldlm_res_id *res1, const struct ldlm_res_id *res2,
- ldlm_policy_data_t *p1, ldlm_policy_data_t *p2)
-{
- int i;
-
- for (i = 0; i < RES_NAME_SIZE; i++) {
- /* return 1 here, because enqueue_ordered will skip resources
- * of all zeroes if they're sorted to the end of the list. */
- if (res1->name[i] == 0 && res2->name[i] != 0)
- return 1;
- if (res2->name[i] == 0 && res1->name[i] != 0)
- return 0;
-
- if (res1->name[i] > res2->name[i])
- return 1;
- if (res1->name[i] < res2->name[i])
- return 0;
- }
- if (!p1 || !p2)
- return 0;
- if (memcmp(p1, p2, sizeof(*p1)) < 0)
- return 1;
- return 0;
-}
-
-/* This function doesn't use ldlm_match_or_enqueue because we're always called
- * with EX or PW locks, and the MDS is no longer allowed to match write locks,
- * because they take the place of local semaphores.
- *
- * One or two locks are taken in numerical order. A res_id->name[0] of 0 means
- * no lock is taken for that res_id. Must be at least one non-zero res_id. */
-int enqueue_ordered_locks(struct obd_device *obd,
- const struct ldlm_res_id *p1_res_id,
- struct lustre_handle *p1_lockh, int p1_lock_mode,
- ldlm_policy_data_t *p1_policy,
- const struct ldlm_res_id *p2_res_id,
- struct lustre_handle *p2_lockh, int p2_lock_mode,
- ldlm_policy_data_t *p2_policy)
-{
- const struct ldlm_res_id *res_id[2] = { p1_res_id, p2_res_id };
- struct lustre_handle *handles[2] = { p1_lockh, p2_lockh };
- int lock_modes[2] = { p1_lock_mode, p2_lock_mode };
- ldlm_policy_data_t *policies[2] = {p1_policy, p2_policy};
- int rc, flags;
- ENTRY;
-
- LASSERT(p1_res_id != NULL && p2_res_id != NULL);
-
- CDEBUG(D_INFO, "locks before: "LPU64"/"LPU64"\n",
- res_id[0]->name[0], res_id[1]->name[0]);
-
- if (res_gt(p1_res_id, p2_res_id, p1_policy, p2_policy)) {
- handles[1] = p1_lockh;
- handles[0] = p2_lockh;
- res_id[1] = p1_res_id;
- res_id[0] = p2_res_id;
- lock_modes[1] = p1_lock_mode;
- lock_modes[0] = p2_lock_mode;
- policies[1] = p1_policy;
- policies[0] = p2_policy;
- }
-
- CDEBUG(D_DLMTRACE, "lock order: "LPU64"/"LPU64"\n",
- res_id[0]->name[0], res_id[1]->name[0]);
-
- flags = LDLM_FL_LOCAL_ONLY | LDLM_FL_ATOMIC_CB;
- rc = ldlm_cli_enqueue_local(obd->obd_namespace, res_id[0],
- LDLM_IBITS, policies[0], lock_modes[0],
- &flags, ldlm_blocking_ast,
- ldlm_completion_ast, NULL, NULL, 0,
- NULL, handles[0]);
- if (rc != ELDLM_OK)
- RETURN(-EIO);
- ldlm_lock_dump_handle(D_OTHER, handles[0]);
-
- if (memcmp(res_id[0], res_id[1], sizeof(*res_id[0])) == 0 &&
- (policies[0]->l_inodebits.bits & policies[1]->l_inodebits.bits)) {
- memcpy(handles[1], handles[0], sizeof(*(handles[1])));
- ldlm_lock_addref(handles[1], lock_modes[1]);
- } else if (res_id[1]->name[0] != 0) {
- flags = LDLM_FL_LOCAL_ONLY | LDLM_FL_ATOMIC_CB;
- rc = ldlm_cli_enqueue_local(obd->obd_namespace, res_id[1],
- LDLM_IBITS, policies[1],
- lock_modes[1], &flags,
- ldlm_blocking_ast,
- ldlm_completion_ast, NULL, NULL,
- 0, NULL, handles[1]);
- if (rc != ELDLM_OK) {
- ldlm_lock_decref(handles[0], lock_modes[0]);
- RETURN(-EIO);
- }
- ldlm_lock_dump_handle(D_OTHER, handles[1]);
- }
-
- RETURN(0);
-}
-
-static inline int res_eq(const struct ldlm_res_id *res1,
- const struct ldlm_res_id *res2)
-{
- return !memcmp(res1, res2, sizeof(*res1));
-}
-
-static inline void
-try_to_aggregate_locks(const struct ldlm_res_id *res1, ldlm_policy_data_t *p1,
- const struct ldlm_res_id *res2, ldlm_policy_data_t *p2)
-{
- if (!res_eq(res1, res2))
- return;
- /* XXX: any additional inodebits (to current LOOKUP and UPDATE)
- * should be taken with great care here */
- p1->l_inodebits.bits |= p2->l_inodebits.bits;
-}
-
-int enqueue_4ordered_locks(struct obd_device *obd,
- const struct ldlm_res_id *p1_res_id,
- struct lustre_handle *p1_lockh, int p1_lock_mode,
- ldlm_policy_data_t *p1_policy,
- const struct ldlm_res_id *p2_res_id,
- struct lustre_handle *p2_lockh, int p2_lock_mode,
- ldlm_policy_data_t *p2_policy,
- const struct ldlm_res_id *c1_res_id,
- struct lustre_handle *c1_lockh, int c1_lock_mode,
- ldlm_policy_data_t *c1_policy,
- const struct ldlm_res_id *c2_res_id,
- struct lustre_handle *c2_lockh, int c2_lock_mode,
- ldlm_policy_data_t *c2_policy)
-{
- const struct ldlm_res_id *res_id[5] = { p1_res_id, p2_res_id,
- c1_res_id, c2_res_id };
- struct lustre_handle *dlm_handles[5] = { p1_lockh, p2_lockh,
- c1_lockh, c2_lockh };
- int lock_modes[5] = { p1_lock_mode, p2_lock_mode,
- c1_lock_mode, c2_lock_mode };
- ldlm_policy_data_t *policies[5] = {p1_policy, p2_policy,
- c1_policy, c2_policy};
- int rc, i, j, sorted, flags;
- ENTRY;
-
- CDEBUG(D_DLMTRACE, "locks before: "LPU64"/"LPU64"/"LPU64"/"LPU64"\n",
- res_id[0]->name[0], res_id[1]->name[0], res_id[2]->name[0],
- res_id[3]->name[0]);
-
- /* simple insertion sort - we have at most 4 elements */
- for (i = 1; i < 4; i++) {
- j = i - 1;
- dlm_handles[4] = dlm_handles[i];
- res_id[4] = res_id[i];
- lock_modes[4] = lock_modes[i];
- policies[4] = policies[i];
-
- sorted = 0;
- do {
- if (res_gt(res_id[j], res_id[4], policies[j],
- policies[4])) {
- dlm_handles[j + 1] = dlm_handles[j];
- res_id[j + 1] = res_id[j];
- lock_modes[j + 1] = lock_modes[j];
- policies[j + 1] = policies[j];
- j--;
- } else {
- sorted = 1;
- }
- } while (j >= 0 && !sorted);
-
- dlm_handles[j + 1] = dlm_handles[4];
- res_id[j + 1] = res_id[4];
- lock_modes[j + 1] = lock_modes[4];
- policies[j + 1] = policies[4];
- }
-
- CDEBUG(D_DLMTRACE, "lock order: "LPU64"/"LPU64"/"LPU64"/"LPU64"\n",
- res_id[0]->name[0], res_id[1]->name[0], res_id[2]->name[0],
- res_id[3]->name[0]);
-
- /* XXX we could send ASTs on all these locks first before blocking? */
- for (i = 0; i < 4; i++) {
- flags = LDLM_FL_ATOMIC_CB;
- if (res_id[i]->name[0] == 0)
- break;
- if (i && res_eq(res_id[i], res_id[i-1])) {
- memcpy(dlm_handles[i], dlm_handles[i-1],
- sizeof(*(dlm_handles[i])));
- ldlm_lock_addref(dlm_handles[i], lock_modes[i]);
- } else {
- /* we need to enqueue locks with different inodebits
- * at once, because otherwise concurrent thread can
- * hit the windown between these two locks and we'll
- * get to deadlock. see bug 10360. note also, that it
- * is impossible to have >2 equal res. */
- if (i < 3)
- try_to_aggregate_locks(res_id[i], policies[i],
- res_id[i+1], policies[i+1]);
- rc = ldlm_cli_enqueue_local(obd->obd_namespace,
- res_id[i], LDLM_IBITS,
- policies[i], lock_modes[i],
- &flags, ldlm_blocking_ast,
- ldlm_completion_ast, NULL,
- NULL, 0, NULL,
- dlm_handles[i]);
- if (rc != ELDLM_OK)
- GOTO(out_err, rc = -EIO);
- ldlm_lock_dump_handle(D_OTHER, dlm_handles[i]);
- }
- }
-
- RETURN(0);
-out_err:
- while (i-- > 0)
- ldlm_lock_decref(dlm_handles[i], lock_modes[i]);
-
- return rc;
-}
-
-/* In the unlikely case that the child changed while we were waiting
- * on the lock, we need to drop the lock on the old child and either:
- * - if the child has a lower resource name, then we have to also
- * drop the parent lock and regain the locks in the right order
- * - in the rename case, if the child has a lower resource name than one of
- * the other parent/child resources (maxres) we also need to reget the locks
- * - if the child has a higher resource name (this is the common case)
- * we can just get the lock on the new child (still in lock order)
- *
- * Returns 0 if the child did not change or if it changed but could be locked.
- * Returns 1 if the child changed and we need to re-lock (no locks held).
- * Returns -ve error with a valid dchild (no locks held). */
-static int mds_verify_child(struct obd_device *obd,
- const struct ldlm_res_id *parent_res_id,
- struct lustre_handle *parent_lockh,
- struct dentry *dparent, int parent_mode,
- struct ldlm_res_id *child_res_id,
- struct lustre_handle *child_lockh,
- struct dentry **dchildp, int child_mode,
- ldlm_policy_data_t *child_policy,
- const char *name, int namelen,
- const struct ldlm_res_id *maxres)
-{
- struct dentry *vchild, *dchild = *dchildp;
- int rc = 0, cleanup_phase = 2; /* parent, child locks */
- ENTRY;
-
- vchild = ll_lookup_one_len(name, dparent, namelen - 1);
- if (IS_ERR(vchild))
- GOTO(cleanup, rc = PTR_ERR(vchild));
-
- if (likely((vchild->d_inode == NULL && child_res_id->name[0] == 0) ||
- (vchild->d_inode != NULL &&
- child_res_id->name[0] == vchild->d_inode->i_ino &&
- child_res_id->name[1] == vchild->d_inode->i_generation))) {
- if (dchild != NULL)
- l_dput(dchild);
- *dchildp = vchild;
-
- RETURN(0);
- }
-
- CDEBUG(D_DLMTRACE, "child inode changed: %p != %p (%lu != "LPU64")\n",
- vchild->d_inode, dchild ? dchild->d_inode : 0,
- vchild->d_inode ? vchild->d_inode->i_ino : 0,
- child_res_id->name[0]);
- if (child_res_id->name[0] != 0)
- ldlm_lock_decref(child_lockh, child_mode);
- if (dchild)
- l_dput(dchild);
-
- cleanup_phase = 1; /* parent lock only */
- *dchildp = dchild = vchild;
-
- if (dchild->d_inode) {
- int flags = LDLM_FL_ATOMIC_CB;
- child_res_id->name[0] = dchild->d_inode->i_ino;
- child_res_id->name[1] = dchild->d_inode->i_generation;
-
- /* Make sure that we don't try to re-enqueue a lock on the
- * same resource if it happens that the source is renamed to
- * the target by another thread (bug 9974, thanks racer :-) */
- if (!res_gt(child_res_id, parent_res_id, NULL, NULL) ||
- !res_gt(child_res_id, maxres, NULL, NULL)) {
- CDEBUG(D_DLMTRACE, "relock "LPU64"<("LPU64"|"LPU64")\n",
- child_res_id->name[0], parent_res_id->name[0],
- maxres->name[0]);
- GOTO(cleanup, rc = 1);
- }
-
- rc = ldlm_cli_enqueue_local(obd->obd_namespace, child_res_id,
- LDLM_IBITS, child_policy,
- child_mode, &flags,
- ldlm_blocking_ast,
- ldlm_completion_ast, NULL,
- NULL, 0, NULL, child_lockh);
- if (rc != ELDLM_OK)
- GOTO(cleanup, rc = -EIO);
- } else {
- memset(child_res_id, 0, sizeof(*child_res_id));
- }
-
- EXIT;
-cleanup:
- if (rc) {
- switch(cleanup_phase) {
- case 2:
- if (child_res_id->name[0] != 0)
- ldlm_lock_decref(child_lockh, child_mode);
- case 1:
- ldlm_lock_decref(parent_lockh, parent_mode);
- }
- }
- return rc;
-}
-
-#define INODE_CTIME_AGE (10)
-#define INODE_CTIME_OLD(inode) (LTIME_S(inode->i_ctime) + \
- INODE_CTIME_AGE < cfs_time_current_sec())
-
-int mds_get_parent_child_locked(struct obd_device *obd, struct mds_obd *mds,
- struct ll_fid *fid,
- struct lustre_handle *parent_lockh,
- struct dentry **dparentp, int parent_mode,
- __u64 parent_lockpart,
- char *name, int namelen,
- struct lustre_handle *child_lockh,
- struct dentry **dchildp, int child_mode,
- __u64 child_lockpart)
-{
- struct ldlm_res_id child_res_id = { .name = {0} };
- struct ldlm_res_id parent_res_id = { .name = {0} };
- ldlm_policy_data_t parent_policy = {.l_inodebits = { parent_lockpart }};
- ldlm_policy_data_t child_policy = {.l_inodebits = { child_lockpart }};
- struct inode *inode;
- int rc = 0, cleanup_phase = 0;
- ENTRY;
-
- /* Step 1: Lookup parent */
- *dparentp = mds_fid2dentry(mds, fid, NULL);
- if (IS_ERR(*dparentp)) {
- rc = PTR_ERR(*dparentp);
- *dparentp = NULL;
- RETURN(rc);
- }
-
- CDEBUG(D_INODE, "parent ino %lu, name %s\n",
- (*dparentp)->d_inode->i_ino, name);
-
- parent_res_id.name[0] = (*dparentp)->d_inode->i_ino;
- parent_res_id.name[1] = (*dparentp)->d_inode->i_generation;
-
- cleanup_phase = 1; /* parent dentry */
-
- /* Step 2: Lookup child (without DLM lock, to get resource name) */
- *dchildp = ll_lookup_one_len(name, *dparentp, namelen - 1);
- if (IS_ERR(*dchildp)) {
- rc = PTR_ERR(*dchildp);
- CDEBUG(D_INODE, "child lookup error %d\n", rc);
- GOTO(cleanup, rc);
- }
-
- cleanup_phase = 2; /* child dentry */
- inode = (*dchildp)->d_inode;
- if (inode != NULL) {
- if (is_bad_inode(inode)) {
- CERROR("bad inode returned %lu/%u\n",
- inode->i_ino, inode->i_generation);
- GOTO(cleanup, rc = -ENOENT);
- }
- inode = igrab(inode);
- }
- if (inode == NULL)
- goto retry_locks;
-
- child_res_id.name[0] = inode->i_ino;
- child_res_id.name[1] = inode->i_generation;
-
- /* If we want a LCK_CR for a directory, and this directory has not been
- changed for some time, we return not only a LOOKUP lock, but also an
- UPDATE lock to have negative dentry starts working for this dir.
- Also we apply same logic to non-directories. If the file is rarely
- changed - we return both locks and this might save us RPC on
- later STAT. */
- if ((child_mode & (LCK_CR|LCK_PR|LCK_CW)) && INODE_CTIME_OLD(inode))
- child_policy.l_inodebits.bits |= MDS_INODELOCK_UPDATE;
-
- iput(inode);
-
-retry_locks:
- cleanup_phase = 2; /* child dentry */
-
- /* Step 3: Lock parent and child in resource order. If child doesn't
- * exist, we still have to lock the parent and re-lookup. */
- rc = enqueue_ordered_locks(obd,&parent_res_id,parent_lockh,parent_mode,
- &parent_policy,
- &child_res_id, child_lockh, child_mode,
- &child_policy);
- if (rc)
- GOTO(cleanup, rc);
-
- if (!(*dchildp)->d_inode)
- cleanup_phase = 3; /* parent lock */
- else
- cleanup_phase = 4; /* child lock */
-
- /* Step 4: Re-lookup child to verify it hasn't changed since locking */
- rc = mds_verify_child(obd, &parent_res_id, parent_lockh, *dparentp,
- parent_mode, &child_res_id, child_lockh, dchildp,
- child_mode,&child_policy, name, namelen, &parent_res_id);
- if (rc > 0)
- goto retry_locks;
- if (rc < 0) {
- cleanup_phase = 2;
- GOTO(cleanup, rc);
- }
-
-cleanup:
- if (rc) {
- switch (cleanup_phase) {
- case 4:
- ldlm_lock_decref(child_lockh, child_mode);
- case 3:
- ldlm_lock_decref(parent_lockh, parent_mode);
- case 2:
- l_dput(*dchildp);
- case 1:
- l_dput(*dparentp);
- default: ;
- }
- }
- return rc;
-}
-
-void mds_reconstruct_generic(struct ptlrpc_request *req)
-{
- struct mds_export_data *med = &req->rq_export->exp_mds_data;
-
- mds_req_from_mcd(req, med->med_mcd);
-}
-
-/* If we are unlinking an open file/dir (i.e. creating an orphan) then
- * we instead link the inode into the PENDING directory until it is
- * finally released. We can't simply call mds_reint_rename() or some
- * part thereof, because we don't have the inode to check for link
- * count/open status until after it is locked.
- *
- * For lock ordering, caller must get child->i_mutex first, then
- * pending->i_mutex before starting journal transaction.
- *
- * returns 1 on success
- * returns 0 if we lost a race and didn't make a new link
- * returns negative on error
- */
-static int mds_orphan_add_link(struct mds_update_record *rec,
- struct obd_device *obd, struct dentry *dentry)
-{
- struct mds_obd *mds = &obd->u.mds;
- struct inode *pending_dir = mds->mds_pending_dir->d_inode;
- struct inode *inode = dentry->d_inode;
- struct dentry *pending_child;
- char fidname[LL_FID_NAMELEN];
- int fidlen = 0, rc, mode;
- ENTRY;
-
- LASSERT(inode != NULL);
- LASSERT(!mds_inode_is_orphan(inode));
-#ifndef HAVE_I_ALLOC_SEM
- LASSERT(TRYLOCK_INODE_MUTEX(inode) == 0);
-#endif
- LASSERT(TRYLOCK_INODE_MUTEX(pending_dir) == 0);
-
- fidlen = ll_fid2str(fidname, inode->i_ino, inode->i_generation);
-
- CDEBUG(D_INODE, "pending destroy of %dx open %d linked %s %s = %s\n",
- mds_orphan_open_count(inode), inode->i_nlink,
- S_ISDIR(inode->i_mode) ? "dir" :
- S_ISREG(inode->i_mode) ? "file" : "other",rec->ur_name,fidname);
-
- if (mds_orphan_open_count(inode) == 0 || inode->i_nlink != 0)
- RETURN(0);
-
- pending_child = lookup_one_len(fidname, mds->mds_pending_dir, fidlen);
- if (IS_ERR(pending_child))
- RETURN(PTR_ERR(pending_child));
-
- if (pending_child->d_inode != NULL) {
- CERROR("re-destroying orphan file %s?\n", rec->ur_name);
- LASSERT(pending_child->d_inode == inode);
- GOTO(out_dput, rc = 0);
- }
-
- /* link() is semanticaly-wrong for S_IFDIR, so we set S_IFREG
- * for linking and return real mode back then -bzzz */
- mode = inode->i_mode;
- inode->i_mode = S_IFREG;
- rc = vfs_link(dentry, pending_dir, pending_child);
- if (rc)
- CERROR("error linking orphan %s to PENDING: rc = %d\n",
- rec->ur_name, rc);
- else
- mds_inode_set_orphan(inode);
-
- /* return mode and correct i_nlink if inode is directory */
- inode->i_mode = mode;
- LASSERTF(inode->i_nlink == 1, "%s nlink == %d\n",
- S_ISDIR(mode) ? "dir" : S_ISREG(mode) ? "file" : "other",
- inode->i_nlink);
- if (S_ISDIR(mode)) {
- inode->i_nlink++;
- pending_dir->i_nlink++;
- mark_inode_dirty(inode);
- mark_inode_dirty(pending_dir);
- }
-
- GOTO(out_dput, rc = 1);
-out_dput:
- l_dput(pending_child);
- RETURN(rc);
-}
-
-int mds_get_cookie_size(struct obd_device *obd, struct lov_mds_md *lmm)
-{
- int count = le32_to_cpu(lmm->lmm_stripe_count);
- int real_csize = count * sizeof(struct llog_cookie);
- return real_csize;
-}
-
-void mds_shrink_reply(struct obd_device *obd, struct ptlrpc_request *req,
- struct mds_body *body, int md_off)
-{
- int cookie_size = 0, md_size = 0;
-
- if (body && body->valid & OBD_MD_FLEASIZE) {
- md_size = body->eadatasize;
- }
- if (body && body->valid & OBD_MD_FLCOOKIE) {
- LASSERT(body->valid & OBD_MD_FLEASIZE);
- cookie_size = mds_get_cookie_size(obd, lustre_msg_buf(
- req->rq_repmsg, md_off, 0));
- }
-
- CDEBUG(D_INFO, "Shrink to md_size %d cookie_size %d \n", md_size,
- cookie_size);
-
- lustre_shrink_reply(req, md_off, md_size, 1);
-
- lustre_shrink_reply(req, md_off + (md_size > 0), cookie_size, 0);
-}
-
-static int mds_reint_unlink(struct mds_update_record *rec, int offset,
- struct ptlrpc_request *req,
- struct lustre_handle *lh)
-{
- struct dentry *dparent = NULL, *dchild;
- struct mds_obd *mds = mds_req2mds(req);
- struct obd_device *obd = req->rq_export->exp_obd;
- struct mds_body *body = NULL;
- struct inode *child_inode = NULL;
- struct lustre_handle parent_lockh, child_lockh, child_reuse_lockh;
- void *handle = NULL;
- int rc = 0, cleanup_phase = 0;
- unsigned int qcids[MAXQUOTAS] = { 0, 0 };
- unsigned int qpids[MAXQUOTAS] = { 0, 0 };
- ENTRY;
-
- LASSERT(offset == REQ_REC_OFF); /* || offset == DLM_INTENT_REC_OFF); */
- offset = REPLY_REC_OFF;
-
- DEBUG_REQ(D_INODE, req, "parent ino "LPU64"/%u, child %s",
- rec->ur_fid1->id, rec->ur_fid1->generation, rec->ur_name);
-
- MDS_CHECK_RESENT(req, mds_reconstruct_generic(req));
-
- if (OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_UNLINK))
- GOTO(cleanup, rc = -ENOENT);
-
- if (rec->ur_dlm)
- ldlm_request_cancel(req, rec->ur_dlm, 0);
-
- rc = mds_get_parent_child_locked(obd, mds, rec->ur_fid1,
- &parent_lockh, &dparent, LCK_EX,
- MDS_INODELOCK_UPDATE,
- rec->ur_name, rec->ur_namelen,
- &child_lockh, &dchild, LCK_EX,
- MDS_INODELOCK_FULL);
- if (rc)
- GOTO(cleanup, rc);
-
- cleanup_phase = 1; /* dchild, dparent, locks */
-
- dget(dchild);
- child_inode = dchild->d_inode;
- if (child_inode == NULL) {
- CDEBUG(D_INODE, "child doesn't exist (dir %lu, name %s)\n",
- dparent->d_inode->i_ino, rec->ur_name);
- GOTO(cleanup, rc = -ENOENT);
- }
-
- /* save uid/gid for quota acquire/release */
- qcids[USRQUOTA] = child_inode->i_uid;
- qcids[GRPQUOTA] = child_inode->i_gid;
- qpids[USRQUOTA] = dparent->d_inode->i_uid;
- qpids[GRPQUOTA] = dparent->d_inode->i_gid;
-
- cleanup_phase = 2; /* dchild has a lock */
-
- /* We have to do these checks ourselves, in case we are making an
- * orphan. The client tells us whether rmdir() or unlink() was called,
- * so we need to return appropriate errors (bug 72). */
- if ((rec->ur_mode & S_IFMT) == S_IFDIR) {
- if (!S_ISDIR(child_inode->i_mode))
- GOTO(cleanup, rc = -ENOTDIR);
- } else {
- if (S_ISDIR(child_inode->i_mode))
- GOTO(cleanup, rc = -EISDIR);
- }
-
- /* Check for EROFS after we check ENODENT, ENOTDIR, and EISDIR */
- if (req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY)
- GOTO(cleanup, rc = -EROFS);
-
- /* Step 3: Get a lock on the ino to sync with creation WRT inode
- * reuse (see bug 2029). */
- rc = mds_lock_new_child(obd, child_inode, &child_reuse_lockh);
- if (rc != ELDLM_OK)
- GOTO(cleanup, rc);
-
- cleanup_phase = 3; /* child inum lock */
-
- OBD_FAIL_WRITE(OBD_FAIL_MDS_REINT_UNLINK_WRITE, dparent->d_inode->i_sb);
-
- /* ldlm_reply in buf[0] if called via intent */
- if (offset == DLM_INTENT_REC_OFF)
- offset = DLM_REPLY_REC_OFF;
-
- body = lustre_msg_buf(req->rq_repmsg, offset, sizeof(*body));
- LASSERT(body != NULL);
-
- /* child orphan sem protects orphan_dec_test && is_orphan race */
- MDS_DOWN_READ_ORPHAN_SEM(child_inode);
- cleanup_phase = 4; /* MDS_UP_READ_ORPHAN_SEM(new_inode) when finished */
-
- /* If this is potentially the last reference to this inode, get the
- * OBD EA data first so the client can destroy OST objects. We
- * only do the object removal later if no open files/links remain. */
- if ((S_ISDIR(child_inode->i_mode) && child_inode->i_nlink == 2) ||
- child_inode->i_nlink == 1) {
- if (mds_orphan_open_count(child_inode) > 0) {
- /* need to lock pending_dir before transaction */
- LOCK_INODE_MUTEX(mds->mds_pending_dir->d_inode);
- cleanup_phase = 5; /* UNLOCK_INODE_MUTEX(mds->mds_pending_dir->d_inode); */
- } else if (S_ISREG(child_inode->i_mode)) {
- mds_pack_inode2fid(&body->fid1, child_inode);
- mds_pack_inode2body(body, child_inode);
- mds_pack_md(obd, req->rq_repmsg, offset + 1, body,
- child_inode, MDS_PACK_MD_LOCK);
- }
- }
-
- /* Step 4: Do the unlink: we already verified ur_mode above (bug 72) */
- switch (child_inode->i_mode & S_IFMT) {
- case S_IFDIR:
- /* Drop any lingering child directories before we start our
- * transaction, to avoid doing multiple inode dirty/delete
- * in our compound transaction (bug 1321). */
- shrink_dcache_parent(dchild);
- handle = fsfilt_start(obd, dparent->d_inode, FSFILT_OP_RMDIR,
- NULL);
- if (IS_ERR(handle))
- GOTO(cleanup, rc = PTR_ERR(handle));
- rc = vfs_rmdir(dparent->d_inode, dchild);
- mds_counter_incr(req->rq_export, LPROC_MDS_RMDIR);
- break;
- case S_IFREG: {
- struct lov_mds_md *lmm = lustre_msg_buf(req->rq_repmsg,
- offset + 1, 0);
- handle = fsfilt_start_log(obd, dparent->d_inode,
- FSFILT_OP_UNLINK, NULL,
- le32_to_cpu(lmm->lmm_stripe_count));
- if (IS_ERR(handle))
- GOTO(cleanup, rc = PTR_ERR(handle));
- rc = vfs_unlink(dparent->d_inode, dchild);
- mds_counter_incr(req->rq_export, LPROC_MDS_UNLINK);
- break;
- }
- case S_IFLNK:
- case S_IFCHR:
- case S_IFBLK:
- case S_IFIFO:
- case S_IFSOCK:
- handle = fsfilt_start(obd, dparent->d_inode, FSFILT_OP_UNLINK,
- NULL);
- if (IS_ERR(handle))
- GOTO(cleanup, rc = PTR_ERR(handle));
- rc = vfs_unlink(dparent->d_inode, dchild);
- mds_counter_incr(req->rq_export, LPROC_MDS_UNLINK);
- break;
- default:
- CERROR("bad file type %o unlinking %s\n", rec->ur_mode,
- rec->ur_name);
- LBUG();
- GOTO(cleanup, rc = -EINVAL);
- }
-
- if (rc == 0 && child_inode->i_nlink == 0) {
- if (mds_orphan_open_count(child_inode) > 0)
- rc = mds_orphan_add_link(rec, obd, dchild);
-
- if (rc == 1)
- GOTO(cleanup, rc = 0);
-
- if (!S_ISREG(child_inode->i_mode))
- GOTO(cleanup, rc);
-
- if (!(body->valid & OBD_MD_FLEASIZE)) {
- body->valid |=(OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
- OBD_MD_FLATIME | OBD_MD_FLMTIME);
- } else if (mds_log_op_unlink(obd,
- lustre_msg_buf(req->rq_repmsg, offset + 1, 0),
- lustre_msg_buflen(req->rq_repmsg, offset + 1),
- lustre_msg_buf(req->rq_repmsg, offset + 2, 0),
- lustre_msg_buflen(req->rq_repmsg, offset+2)) >
- 0) {
- body->valid |= OBD_MD_FLCOOKIE;
- }
- }
-
- GOTO(cleanup, rc);
-cleanup:
- if (rc == 0) {
- struct iattr iattr;
- int err;
-
- iattr.ia_valid = ATTR_MTIME | ATTR_CTIME;
- LTIME_S(iattr.ia_mtime) = rec->ur_time;
- LTIME_S(iattr.ia_ctime) = rec->ur_time;
-
- err = fsfilt_setattr(obd, dparent, handle, &iattr, 0);
- if (err)
- CERROR("error on parent setattr: rc = %d\n", err);
- }
-
- rc = mds_finish_transno(mds, dparent ? dparent->d_inode : NULL,
- handle, req, rc, 0, 0);
- if (!rc)
- (void)obd_set_info_async(mds->mds_osc_exp, strlen("unlinked"),
- "unlinked", 0, NULL, NULL);
- switch(cleanup_phase) {
- case 5: /* pending_dir semaphore */
- UNLOCK_INODE_MUTEX(mds->mds_pending_dir->d_inode);
- case 4: /* child inode semaphore */
- MDS_UP_READ_ORPHAN_SEM(child_inode);
- case 3: /* child ino-reuse lock */
- if (rc && body != NULL) {
- // Don't unlink the OST objects if the MDS unlink failed
- body->valid = 0;
- }
- if (rc)
- ldlm_lock_decref(&child_reuse_lockh, LCK_EX);
- else
- ptlrpc_save_lock(req, &child_reuse_lockh, LCK_EX);
- case 2: /* child lock */
- ldlm_lock_decref(&child_lockh, LCK_EX);
- case 1: /* child and parent dentry, parent lock */
- if (rc)
- ldlm_lock_decref(&parent_lockh, LCK_EX);
- else
- ptlrpc_save_lock(req, &parent_lockh, LCK_EX);
- l_dput(dchild);
- l_dput(dchild);
- l_dput(dparent);
- case 0:
- break;
- default:
- CERROR("invalid cleanup_phase %d\n", cleanup_phase);
- LBUG();
- }
- req->rq_status = rc;
-
- mds_shrink_reply(obd, req, body, REPLY_REC_OFF + 1);
-
- /* trigger dqrel on the owner of child and parent */
- lquota_adjust(mds_quota_interface_ref, obd, qcids, qpids, rc, FSFILT_OP_UNLINK);
- return 0;
-}
-
-static int mds_reint_link(struct mds_update_record *rec, int offset,
- struct ptlrpc_request *req,
- struct lustre_handle *lh)
-{
- struct obd_device *obd = req->rq_export->exp_obd;
- struct dentry *de_src = NULL;
- struct dentry *de_tgt_dir = NULL;
- struct dentry *dchild = NULL;
- struct mds_obd *mds = mds_req2mds(req);
- struct lustre_handle *handle = NULL, tgt_dir_lockh, src_lockh;
- struct ldlm_res_id src_res_id = { .name = {0} };
- struct ldlm_res_id tgt_dir_res_id = { .name = {0} };
- ldlm_policy_data_t src_policy ={.l_inodebits = {MDS_INODELOCK_UPDATE}};
- ldlm_policy_data_t tgt_dir_policy =
- {.l_inodebits = {MDS_INODELOCK_UPDATE}};
- int rc = 0, cleanup_phase = 0;
- ENTRY;
-
- LASSERT(offset == REQ_REC_OFF);
-
- DEBUG_REQ(D_INODE, req, "original "LPU64"/%u to "LPU64"/%u %s",
- rec->ur_fid1->id, rec->ur_fid1->generation,
- rec->ur_fid2->id, rec->ur_fid2->generation, rec->ur_name);
- mds_counter_incr(req->rq_export, LPROC_MDS_LINK);
-
- MDS_CHECK_RESENT(req, mds_reconstruct_generic(req));
-
- if (OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_LINK))
- GOTO(cleanup, rc = -ENOENT);
-
- if (rec->ur_dlm)
- ldlm_request_cancel(req, rec->ur_dlm, 0);
-
- /* Step 1: Lookup the source inode and target directory by FID */
- de_src = mds_fid2dentry(mds, rec->ur_fid1, NULL);
- if (IS_ERR(de_src))
- GOTO(cleanup, rc = PTR_ERR(de_src));
-
- cleanup_phase = 1; /* source dentry */
-
- de_tgt_dir = mds_fid2dentry(mds, rec->ur_fid2, NULL);
- if (IS_ERR(de_tgt_dir)) {
- rc = PTR_ERR(de_tgt_dir);
- de_tgt_dir = NULL;
- GOTO(cleanup, rc);
- }
-
- cleanup_phase = 2; /* target directory dentry */
-
- CDEBUG(D_INODE, "linking %.*s/%s to inode %lu\n",
- de_tgt_dir->d_name.len, de_tgt_dir->d_name.name, rec->ur_name,
- de_src->d_inode->i_ino);
-
- /* Step 2: Take the two locks */
- src_res_id.name[0] = de_src->d_inode->i_ino;
- src_res_id.name[1] = de_src->d_inode->i_generation;
- tgt_dir_res_id.name[0] = de_tgt_dir->d_inode->i_ino;
- tgt_dir_res_id.name[1] = de_tgt_dir->d_inode->i_generation;
-
- rc = enqueue_ordered_locks(obd, &src_res_id, &src_lockh, LCK_EX,
- &src_policy,
- &tgt_dir_res_id, &tgt_dir_lockh, LCK_EX,
- &tgt_dir_policy);
- if (rc)
- GOTO(cleanup, rc);
-
- cleanup_phase = 3; /* locks */
-
- if (mds_inode_is_orphan(de_src->d_inode)) {
- CDEBUG(D_INODE, "an attempt to link an orphan inode %lu/%u\n",
- de_src->d_inode->i_ino,
- de_src->d_inode->i_generation);
- GOTO(cleanup, rc = -ENOENT);
- }
-
- /* Step 3: Lookup the child */
- dchild = ll_lookup_one_len(rec->ur_name, de_tgt_dir, rec->ur_namelen-1);
- if (IS_ERR(dchild)) {
- rc = PTR_ERR(dchild);
- if (rc != -EPERM && rc != -EACCES && rc != -ENAMETOOLONG)
- CERROR("child lookup error %d\n", rc);
- GOTO(cleanup, rc);
- }
-
- cleanup_phase = 4; /* child dentry */
-
- if (dchild->d_inode) {
- CDEBUG(D_INODE, "child exists (dir %lu, name %s)\n",
- de_tgt_dir->d_inode->i_ino, rec->ur_name);
- rc = -EEXIST;
- GOTO(cleanup, rc);
- }
-
- /* Step 4: Do it. */
- OBD_FAIL_WRITE(OBD_FAIL_MDS_REINT_LINK_WRITE, de_src->d_inode->i_sb);
-
- if (req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY)
- GOTO(cleanup, rc = -EROFS);
-
- handle = fsfilt_start(obd, de_tgt_dir->d_inode, FSFILT_OP_LINK, NULL);
- if (IS_ERR(handle))
- GOTO(cleanup, rc = PTR_ERR(handle));
-
- rc = vfs_link(de_src, de_tgt_dir->d_inode, dchild);
- if (rc && rc != -EPERM && rc != -EACCES)
- CERROR("vfs_link error %d\n", rc);
-cleanup:
- rc = mds_finish_transno(mds, de_tgt_dir ? de_tgt_dir->d_inode : NULL,
- handle, req, rc, 0, 0);
- EXIT;
-
- switch (cleanup_phase) {
- case 4: /* child dentry */
- l_dput(dchild);
- case 3: /* locks */
- if (rc) {
- ldlm_lock_decref(&src_lockh, LCK_EX);
- ldlm_lock_decref(&tgt_dir_lockh, LCK_EX);
- } else {
- ptlrpc_save_lock(req, &src_lockh, LCK_EX);
- ptlrpc_save_lock(req, &tgt_dir_lockh, LCK_EX);
- }
- case 2: /* target dentry */
- l_dput(de_tgt_dir);
- case 1: /* source dentry */
- l_dput(de_src);
- case 0:
- break;
- default:
- CERROR("invalid cleanup_phase %d\n", cleanup_phase);
- LBUG();
- }
- req->rq_status = rc;
- return 0;
-}
-
-/* The idea here is that we need to get four locks in the end:
- * one on each parent directory, one on each child. We need to take
- * these locks in some kind of order (to avoid deadlocks), and the order
- * I selected is "increasing resource number" order. We need to look up
- * the children, however, before we know what the resource number(s) are.
- * Thus the following plan:
- *
- * 1,2. Look up the parents
- * 3,4. Look up the children
- * 5. Take locks on the parents and children, in order
- * 6. Verify that the children haven't changed since they were looked up
- *
- * If there was a race and the children changed since they were first looked
- * up, it is possible that mds_verify_child() will be able to just grab the
- * lock on the new child resource (if it has a higher resource than any other)
- * but we need to compare against not only its parent, but also against the
- * parent and child of the "other half" of the rename, hence maxres_{src,tgt}.
- *
- * We need the fancy igrab() on the child inodes because we aren't holding a
- * lock on the parent after the lookup is done, so dentry->d_inode may change
- * at any time, and igrab() itself doesn't like getting passed a NULL argument.
- */
-int mds_get_parents_children_locked(struct obd_device *obd,
- struct mds_obd *mds,
- struct ll_fid *p1_fid,
- struct dentry **de_srcdirp,
- struct ll_fid *p2_fid,
- struct dentry **de_tgtdirp,
- int parent_mode,
- const char *old_name, int old_len,
- struct dentry **de_oldp,
- const char *new_name, int new_len,
- struct dentry **de_newp,
- struct lustre_handle *dlm_handles,
- int child_mode)
-{
- struct ldlm_res_id p1_res_id = { .name = {0} };
- struct ldlm_res_id p2_res_id = { .name = {0} };
- struct ldlm_res_id c1_res_id = { .name = {0} };
- struct ldlm_res_id c2_res_id = { .name = {0} };
- ldlm_policy_data_t p_policy = {.l_inodebits = {MDS_INODELOCK_UPDATE}};
- /* Only dentry should disappear, but the inode itself would be
- intact otherwise. */
- ldlm_policy_data_t c1_policy = {.l_inodebits = {MDS_INODELOCK_LOOKUP}};
- /* If something is going to be replaced, both dentry and inode locks are needed */
- ldlm_policy_data_t c2_policy = {.l_inodebits = {MDS_INODELOCK_FULL}};
- struct ldlm_res_id *maxres_src, *maxres_tgt;
- struct inode *inode;
- int rc = 0, cleanup_phase = 0;
- ENTRY;
-
- /* Step 1: Lookup the source directory */
- *de_srcdirp = mds_fid2dentry(mds, p1_fid, NULL);
- if (IS_ERR(*de_srcdirp))
- GOTO(cleanup, rc = PTR_ERR(*de_srcdirp));
-
- cleanup_phase = 1; /* source directory dentry */
-
- p1_res_id.name[0] = (*de_srcdirp)->d_inode->i_ino;
- p1_res_id.name[1] = (*de_srcdirp)->d_inode->i_generation;
-
- /* Step 2: Lookup the target directory */
- if (memcmp(p1_fid, p2_fid, sizeof(*p1_fid)) == 0) {
- *de_tgtdirp = dget(*de_srcdirp);
- } else {
- *de_tgtdirp = mds_fid2dentry(mds, p2_fid, NULL);
- if (IS_ERR(*de_tgtdirp)) {
- rc = PTR_ERR(*de_tgtdirp);
- *de_tgtdirp = NULL;
- GOTO(cleanup, rc);
- }
- }
-
- cleanup_phase = 2; /* target directory dentry */
-
- p2_res_id.name[0] = (*de_tgtdirp)->d_inode->i_ino;
- p2_res_id.name[1] = (*de_tgtdirp)->d_inode->i_generation;
-
- /* Step 3: Lookup the source child entry */
- *de_oldp = ll_lookup_one_len(old_name, *de_srcdirp, old_len - 1);
- if (IS_ERR(*de_oldp)) {
- rc = PTR_ERR(*de_oldp);
- CDEBUG(D_INODE, "old child lookup error (%.*s): %d\n",
- old_len - 1, old_name, rc);
- GOTO(cleanup, rc);
- }
-
- cleanup_phase = 3; /* original name dentry */
-
- inode = (*de_oldp)->d_inode;
- if (inode != NULL)
- inode = igrab(inode);
- if (inode == NULL)
- GOTO(cleanup, rc = -ENOENT);
-
- c1_res_id.name[0] = inode->i_ino;
- c1_res_id.name[1] = inode->i_generation;
-
- iput(inode);
-
- /* Step 4: Lookup the target child entry */
- if (!new_name)
- GOTO(retry_locks, rc);
- *de_newp = ll_lookup_one_len(new_name, *de_tgtdirp, new_len - 1);
- if (IS_ERR(*de_newp)) {
- rc = PTR_ERR(*de_newp);
- if (rc != -ENAMETOOLONG)
- CERROR("new child lookup error (%.*s): %d\n",
- old_len - 1, old_name, rc);
- GOTO(cleanup, rc);
- }
-
- cleanup_phase = 4; /* target dentry */
-
- inode = (*de_newp)->d_inode;
- if (inode != NULL)
- inode = igrab(inode);
- if (inode == NULL)
- goto retry_locks;
-
- c2_res_id.name[0] = inode->i_ino;
- c2_res_id.name[1] = inode->i_generation;
- iput(inode);
-
-retry_locks:
- /* Step 5: Take locks on the parents and child(ren) */
- maxres_src = &p1_res_id;
- maxres_tgt = &p2_res_id;
- cleanup_phase = 4; /* target dentry */
-
- if (c1_res_id.name[0] != 0 && res_gt(&c1_res_id, &p1_res_id,NULL,NULL))
- maxres_src = &c1_res_id;
- if (c2_res_id.name[0] != 0 && res_gt(&c2_res_id, &p2_res_id,NULL,NULL))
- maxres_tgt = &c2_res_id;
-
- rc = enqueue_4ordered_locks(obd, &p1_res_id,&dlm_handles[0],parent_mode,
- &p_policy,
- &p2_res_id, &dlm_handles[1], parent_mode,
- &p_policy,
- &c1_res_id, &dlm_handles[2], child_mode,
- &c1_policy,
- &c2_res_id, &dlm_handles[3], child_mode,
- &c2_policy);
- if (rc)
- GOTO(cleanup, rc);
-
- cleanup_phase = 6; /* parent and child(ren) locks */
-
- /* Step 6a: Re-lookup source child to verify it hasn't changed */
- rc = mds_verify_child(obd, &p1_res_id, &dlm_handles[0], *de_srcdirp,
- parent_mode, &c1_res_id, &dlm_handles[2], de_oldp,
- child_mode, &c1_policy, old_name, old_len,
- maxres_tgt);
- if (rc) {
- if (c2_res_id.name[0] != 0)
- ldlm_lock_decref(&dlm_handles[3], child_mode);
- ldlm_lock_decref(&dlm_handles[1], parent_mode);
- cleanup_phase = 4;
- if (rc > 0)
- goto retry_locks;
- GOTO(cleanup, rc);
- }
-
- if ((*de_oldp)->d_inode == NULL)
- GOTO(cleanup, rc = -ENOENT);
-
- if (!new_name)
- GOTO(cleanup, rc);
- /* Step 6b: Re-lookup target child to verify it hasn't changed */
- rc = mds_verify_child(obd, &p2_res_id, &dlm_handles[1], *de_tgtdirp,
- parent_mode, &c2_res_id, &dlm_handles[3], de_newp,
- child_mode, &c2_policy, new_name, new_len,
- maxres_src);
- if (rc) {
- ldlm_lock_decref(&dlm_handles[2], child_mode);
- ldlm_lock_decref(&dlm_handles[0], parent_mode);
- cleanup_phase = 4;
- if (rc > 0)
- goto retry_locks;
- GOTO(cleanup, rc);
- }
-
- EXIT;
-cleanup:
- if (rc) {
- switch (cleanup_phase) {
- case 6: /* child lock(s) */
- if (c2_res_id.name[0] != 0)
- ldlm_lock_decref(&dlm_handles[3], child_mode);
- if (c1_res_id.name[0] != 0)
- ldlm_lock_decref(&dlm_handles[2], child_mode);
- case 5: /* parent locks */
- ldlm_lock_decref(&dlm_handles[1], parent_mode);
- ldlm_lock_decref(&dlm_handles[0], parent_mode);
- case 4: /* target dentry */
- l_dput(*de_newp);
- case 3: /* source dentry */
- l_dput(*de_oldp);
- case 2: /* target directory dentry */
- l_dput(*de_tgtdirp);
- case 1: /* source directry dentry */
- l_dput(*de_srcdirp);
- }
- }
-
- return rc;
-}
-
-static int mds_reint_rename(struct mds_update_record *rec, int offset,
- struct ptlrpc_request *req,
- struct lustre_handle *lockh)
-{
- struct obd_device *obd = req->rq_export->exp_obd;
- struct dentry *de_srcdir = NULL;
- struct dentry *de_tgtdir = NULL;
- struct dentry *de_old = NULL;
- struct dentry *de_new = NULL;
- struct inode *old_inode = NULL, *new_inode = NULL;
- struct mds_obd *mds = mds_req2mds(req);
- struct lustre_handle dlm_handles[4];
- struct mds_body *body = NULL;
- struct lov_mds_md *lmm = NULL;
- int rc = 0, lock_count = 3, cleanup_phase = 0;
- void *handle = NULL;
- unsigned int qcids[MAXQUOTAS] = { 0, 0 };
- unsigned int qpids[4] = { 0, 0, 0, 0 };
- ENTRY;
-
- LASSERT(offset == REQ_REC_OFF);
- offset = REPLY_REC_OFF;
-
- DEBUG_REQ(D_INODE, req, "parent "LPU64"/%u %s to "LPU64"/%u %s",
- rec->ur_fid1->id, rec->ur_fid1->generation, rec->ur_name,
- rec->ur_fid2->id, rec->ur_fid2->generation, rec->ur_tgt);
- mds_counter_incr(req->rq_export, LPROC_MDS_RENAME);
-
- MDS_CHECK_RESENT(req, mds_reconstruct_generic(req));
-
- if (rec->ur_dlm)
- ldlm_request_cancel(req, rec->ur_dlm, 0);
-
- rc = mds_get_parents_children_locked(obd, mds, rec->ur_fid1, &de_srcdir,
- rec->ur_fid2, &de_tgtdir, LCK_EX,
- rec->ur_name, rec->ur_namelen,
- &de_old, rec->ur_tgt,
- rec->ur_tgtlen, &de_new,
- dlm_handles, LCK_EX);
- if (rc)
- GOTO(cleanup, rc);
-
- cleanup_phase = 1; /* parent(s), children, locks */
-
- old_inode = de_old->d_inode;
- new_inode = de_new->d_inode;
-
- if (new_inode != NULL)
- lock_count = 4;
-
- /* sanity check for src inode */
- if (old_inode->i_ino == de_srcdir->d_inode->i_ino ||
- old_inode->i_ino == de_tgtdir->d_inode->i_ino)
- GOTO(cleanup, rc = -EINVAL);
-
- if (req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY)
- GOTO(cleanup, rc = -EROFS);
-
- if (new_inode == NULL)
- goto no_unlink;
-
- igrab(new_inode);
- cleanup_phase = 2; /* iput(new_inode) when finished */
-
- /* sanity check for dest inode */
- if (new_inode->i_ino == de_srcdir->d_inode->i_ino ||
- new_inode->i_ino == de_tgtdir->d_inode->i_ino)
- GOTO(cleanup, rc = -EINVAL);
-
- if (old_inode == new_inode)
- GOTO(cleanup, rc = 0);
-
- /* save uids/gids for qunit acquire/release */
- qcids[USRQUOTA] = old_inode->i_uid;
- qcids[GRPQUOTA] = old_inode->i_gid;
- qpids[USRQUOTA] = de_tgtdir->d_inode->i_uid;
- qpids[GRPQUOTA] = de_tgtdir->d_inode->i_gid;
- qpids[2] = de_srcdir->d_inode->i_uid;
- qpids[3] = de_srcdir->d_inode->i_gid;
-
- /* if we are about to remove the target at first, pass the EA of
- * that inode to client to perform and cleanup on OST */
- body = lustre_msg_buf(req->rq_repmsg, offset, sizeof(*body));
- LASSERT(body != NULL);
-
- /* child orphan sem protects orphan_dec_test && is_orphan race */
- MDS_DOWN_READ_ORPHAN_SEM(new_inode);
- cleanup_phase = 3; /* MDS_UP_READ_ORPHAN_SEM(new_inode) when finished */
-
- if ((S_ISDIR(new_inode->i_mode) && new_inode->i_nlink == 2) ||
- new_inode->i_nlink == 1) {
- if (mds_orphan_open_count(new_inode) > 0) {
- /* need to lock pending_dir before transaction */
- LOCK_INODE_MUTEX(mds->mds_pending_dir->d_inode);
- cleanup_phase = 4; /* UNLOCK_INODE_MUTEX(mds->mds_pending_dir->d_inode); */
- } else if (S_ISREG(new_inode->i_mode)) {
- mds_pack_inode2fid(&body->fid1, new_inode);
- mds_pack_inode2body(body, new_inode);
- mds_pack_md(obd, req->rq_repmsg, offset + 1, body,
- new_inode, MDS_PACK_MD_LOCK);
- }
- }
-
-no_unlink:
- OBD_FAIL_WRITE(OBD_FAIL_MDS_REINT_RENAME_WRITE,
- de_srcdir->d_inode->i_sb);
-
- /* Check if we are moving old entry into its child. 2.6 does not
- check for this in vfs_rename() anymore */
- if (is_subdir(de_new, de_old))
- GOTO(cleanup, rc = -EINVAL);
-
- lmm = lustre_msg_buf(req->rq_repmsg, offset + 1, 0);
- handle = fsfilt_start_log(obd, de_tgtdir->d_inode, FSFILT_OP_RENAME,
- NULL, le32_to_cpu(lmm->lmm_stripe_count));
-
- if (IS_ERR(handle))
- GOTO(cleanup, rc = PTR_ERR(handle));
-
- lock_kernel();
- de_old->d_fsdata = req;
- de_new->d_fsdata = req;
-
- rc = vfs_rename(de_srcdir->d_inode, de_old, de_tgtdir->d_inode, de_new);
- unlock_kernel();
-
- if (rc == 0 && new_inode != NULL && new_inode->i_nlink == 0) {
- if (mds_orphan_open_count(new_inode) > 0)
- rc = mds_orphan_add_link(rec, obd, de_new);
-
- if (rc == 1)
- GOTO(cleanup, rc = 0);
-
- if (!S_ISREG(new_inode->i_mode))
- GOTO(cleanup, rc);
-
- if (!(body->valid & OBD_MD_FLEASIZE)) {
- body->valid |= (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
- OBD_MD_FLATIME | OBD_MD_FLMTIME);
- } else if (mds_log_op_unlink(obd,
- lustre_msg_buf(req->rq_repmsg,
- offset + 1, 0),
- lustre_msg_buflen(req->rq_repmsg,
- offset + 1),
- lustre_msg_buf(req->rq_repmsg,
- offset + 2, 0),
- lustre_msg_buflen(req->rq_repmsg,
- offset + 2))
- > 0) {
- body->valid |= OBD_MD_FLCOOKIE;
- }
- }
-
- GOTO(cleanup, rc);
-cleanup:
- rc = mds_finish_transno(mds, de_tgtdir ? de_tgtdir->d_inode : NULL,
- handle, req, rc, 0, 0);
-
- switch (cleanup_phase) {
- case 4:
- UNLOCK_INODE_MUTEX(mds->mds_pending_dir->d_inode);
- case 3:
- MDS_UP_READ_ORPHAN_SEM(new_inode);
- case 2:
- iput(new_inode);
- case 1:
- if (rc) {
- if (lock_count == 4)
- ldlm_lock_decref(&(dlm_handles[3]), LCK_EX);
- ldlm_lock_decref(&(dlm_handles[2]), LCK_EX);
- ldlm_lock_decref(&(dlm_handles[1]), LCK_EX);
- ldlm_lock_decref(&(dlm_handles[0]), LCK_EX);
- } else {
- if (lock_count == 4)
- ptlrpc_save_lock(req,&(dlm_handles[3]), LCK_EX);
- ptlrpc_save_lock(req, &(dlm_handles[2]), LCK_EX);
- ptlrpc_save_lock(req, &(dlm_handles[1]), LCK_EX);
- ptlrpc_save_lock(req, &(dlm_handles[0]), LCK_EX);
- }
- l_dput(de_new);
- l_dput(de_old);
- l_dput(de_tgtdir);
- l_dput(de_srcdir);
- case 0:
- break;
- default:
- CERROR("invalid cleanup_phase %d\n", cleanup_phase);
- LBUG();
- }
- req->rq_status = rc;
-
- /* acquire/release qunit */
- lquota_adjust(mds_quota_interface_ref, obd, qcids, qpids, rc, FSFILT_OP_RENAME);
- return 0;
-}
-
-typedef int (*mds_reinter)(struct mds_update_record *, int offset,
- struct ptlrpc_request *, struct lustre_handle *);
-
-static mds_reinter reinters[REINT_MAX] = {
- [REINT_SETATTR] mds_reint_setattr,
- [REINT_CREATE] mds_reint_create,
- [REINT_LINK] mds_reint_link,
- [REINT_UNLINK] mds_reint_unlink,
- [REINT_RENAME] mds_reint_rename,
- [REINT_OPEN] mds_open
-};
-
-int mds_reint_rec(struct mds_update_record *rec, int offset,
- struct ptlrpc_request *req, struct lustre_handle *lockh)
-{
- struct obd_device *obd = req->rq_export->exp_obd;
-#if 0
- struct mds_obd *mds = &obd->u.mds;
-#ifdef CRAY_XT3
- gid_t fsgid = rec->ur_uc.luc_fsgid;
-#endif
-#endif
- struct lvfs_run_ctxt saved;
- int rc;
- ENTRY;
-
-#ifdef CRAY_XT3
- if (req->rq_uid != LNET_UID_ANY) {
- /* non-root local cluster client
- * NB root's creds are believed... */
- LASSERT (req->rq_uid != 0);
- rec->ur_uc.luc_fsuid = req->rq_uid;
- rec->ur_uc.luc_cap = 0;
- }
-#endif
-
-#if 0
- /* get group info of this user */
- rec->ur_uc.luc_uce = upcall_cache_get_entry(mds->mds_group_hash,
- rec->ur_uc.luc_fsuid,
- rec->ur_uc.luc_fsgid, 2,
- &rec->ur_uc.luc_suppgid1);
-
- if (IS_ERR(rec->ur_uc.luc_uce)) {
- rc = PTR_ERR(rec->ur_uc.luc_uce);
- rec->ur_uc.luc_uce = NULL;
- RETURN(rc);
- }
-
- /* checked by unpacker */
- LASSERT(rec->ur_opcode < REINT_MAX && reinters[rec->ur_opcode] != NULL);
-
-#ifdef CRAY_XT3
- if (rec->ur_uc.luc_uce)
- rec->ur_uc.luc_fsgid = rec->ur_uc.luc_uce->ue_primary;
-#endif
-#endif
-
- push_ctxt(&saved, &obd->obd_lvfs_ctxt, &rec->ur_uc);
-
-#if 0
-#ifdef CRAY_XT3
- if (rec->ur_uc.luc_uce && fsgid != rec->ur_uc.luc_fsgid &&
- in_group_p(fsgid)) {
- rec->ur_uc.luc_fsgid = fsgid;
- current->fsgid = saved.luc.luc_fsgid = fsgid;
- }
-#endif
-#endif
-
- rc = reinters[rec->ur_opcode] (rec, offset, req, lockh);
- pop_ctxt(&saved, &obd->obd_lvfs_ctxt, &rec->ur_uc);
-
-#if 0
- upcall_cache_put_entry(mds->mds_group_hash, rec->ur_uc.luc_uce);
-#endif
- RETURN(rc);
-}
git://git.whamcloud.com / fs / lustre-release.git / commitdiff