/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*
- * linux/mdt/mdt_open.c
- * Lustre Metadata Target (mdt) open/close file handling
+ * GPL HEADER START
*
- * Copyright (C) 2002-2006 Cluster File Systems, Inc.
- * Author: Huang Hua <huanghua@clusterfs.com>
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * This file is part of the Lustre file system, http://www.lustre.org
- * Lustre is a trademark of Cluster File Systems, Inc.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
*
- * 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.
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
*
- * 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.
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
*
- * 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.
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Use is subject to license terms.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ *
+ * lustre/mdt/mdt_open.c
+ *
+ * Lustre Metadata Target (mdt) open/close file handling
+ *
+ * Author: Huang Hua <huanghua@clusterfs.com>
*/
#ifndef EXPORT_SYMTAB
#endif
#define DEBUG_SUBSYSTEM S_MDS
-#include <linux/lustre_acl.h>
+#include <lustre_acl.h>
#include <lustre_mds.h>
#include "mdt_internal.h"
* and "close", maybe someone has changed the file mode
* or flags, or the file created mode do not permit wirte,
* and so on. Just set MDS_PERM_BYPASS for all the cases. */
- info->mti_attr.ma_attr_flags |= MDS_PERM_BYPASS;
+ info->mti_attr.ma_attr_flags |= MDS_PERM_BYPASS | MDS_SOM;
info->mti_attr.ma_attr.la_valid &= LA_SIZE | LA_BLOCKS |
LA_ATIME | LA_MTIME | LA_CTIME;
RETURN(mdt_attr_set(info, o, 0));
__u32 create_flags = info->mti_spec.sp_cr_flags;
struct mdt_reint_record *rr = &info->mti_rr;
struct lu_name *lname;
- int result;
+ int result, rc;
int created = 0;
+ __u32 msg_flags;
ENTRY;
OBD_FAIL_TIMEOUT_ORSET(OBD_FAIL_MDS_PAUSE_OPEN, OBD_FAIL_ONCE,
CERROR("JOIN file will be supported soon\n");
GOTO(out, result = err_serious(-EOPNOTSUPP));
}
+ msg_flags = lustre_msg_get_flags(req->rq_reqmsg);
CDEBUG(D_INODE, "I am going to open "DFID"/(%s->"DFID") "
"cr_flag=0%o mode=0%06o msg_flag=0x%x\n",
PFID(rr->rr_fid1), rr->rr_name,
PFID(rr->rr_fid2), create_flags,
- ma->ma_attr.la_mode, lustre_msg_get_flags(req->rq_reqmsg));
+ ma->ma_attr.la_mode, msg_flags);
- if ((lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) ||
+ if (msg_flags & MSG_REPLAY ||
(req->rq_export->exp_libclient && create_flags&MDS_OPEN_HAS_EA)) {
/* This is a replay request or from liblustre with ea. */
result = mdt_open_by_fid(info, ldlm_rep);
* The object is on remote node, return its FID for remote open.
*/
if (result == -EREMOTE) {
- int rc;
-
/*
* Check if this lock already was sent to client and
* this is resent case. For resent case do not take lock
if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
struct ldlm_lock *lock;
- LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
- MSG_RESENT);
+ LASSERT(msg_flags & MSG_RESENT);
lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
if (!lock) {
}
}
+ LASSERT(!lustre_handle_is_used(&lhc->mlh_reg_lh));
+
+ /* get openlock if this is not replay and if a client requested it */
+ if (!(msg_flags & MSG_REPLAY) && create_flags & MDS_OPEN_LOCK) {
+ ldlm_mode_t lm;
+
+ LASSERT(!created);
+ if (create_flags & FMODE_WRITE)
+ lm = LCK_CW;
+ else if (create_flags & MDS_FMODE_EXEC)
+ lm = LCK_PR;
+ else
+ lm = LCK_CR;
+ mdt_lock_handle_init(lhc);
+ mdt_lock_reg_init(lhc, lm);
+ rc = mdt_object_lock(info, child, lhc,
+ MDS_INODELOCK_LOOKUP | MDS_INODELOCK_OPEN,
+ MDT_CROSS_LOCK);
+ if (rc) {
+ result = rc;
+ GOTO(out_child, result);
+ } else {
+ result = -EREMOTE;
+ mdt_set_disposition(info, ldlm_rep, DISP_OPEN_LOCK);
+ }
+ }
+
/* Try to open it now. */
- result = mdt_finish_open(info, parent, child, create_flags,
- created, ldlm_rep);
-
- if (result != 0 && created) {
- int rc2;
- ma->ma_need = 0;
- ma->ma_valid = 0;
- ma->ma_cookie_size = 0;
- info->mti_no_need_trans = 1;
- rc2 = mdo_unlink(info->mti_env,
- mdt_object_child(parent),
- mdt_object_child(child),
- lname,
- &info->mti_attr);
- if (rc2 != 0)
- CERROR("Error in cleanup of open\n");
+ rc = mdt_finish_open(info, parent, child, create_flags,
+ created, ldlm_rep);
+ if (rc) {
+ result = rc;
+ if (lustre_handle_is_used(&lhc->mlh_reg_lh))
+ /* openlock was acquired and mdt_finish_open failed -
+ drop the openlock */
+ mdt_object_unlock(info, child, lhc, 1);
+ if (created) {
+ ma->ma_need = 0;
+ ma->ma_valid = 0;
+ ma->ma_cookie_size = 0;
+ info->mti_no_need_trans = 1;
+ rc = mdo_unlink(info->mti_env,
+ mdt_object_child(parent),
+ mdt_object_child(child),
+ lname,
+ &info->mti_attr);
+ if (rc != 0)
+ CERROR("Error in cleanup of open\n");
+ }
}
EXIT;
out_child:
out_parent:
mdt_object_unlock_put(info, parent, lh, result);
out:
- if (result)
+ if (result && result != -EREMOTE)
lustre_msg_set_transno(req->rq_repmsg, 0);
return result;
}
ma->ma_need = MA_INODE | MA_LOV | MA_COOKIE;
repbody->eadatasize = 0;
repbody->aclsize = 0;
- } else
+ } else {
rc = err_serious(rc);
+ }
med = &req->rq_export->exp_mdt_data;
spin_lock(&med->med_open_lock);
mdt_empty_transno(info);
RETURN(rc);
}
-