-/*
- * Copryright (C) 2001 Cluster File Systems, Inc.
+/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
+ * vim:expandtab:shiftwidth=8:tabstop=8:
*
+ * Copyright (C) 2001-2003 Cluster File Systems, Inc.
+ *
+ * This file is part of Lustre, http://www.sf.net/projects/lustre/
+ *
+ * Lustre is free 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.
+ *
+ * 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
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Lustre; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#define EXPORT_SYMTAB
+#define DEBUG_SUBSYSTEM S_MDC
+
+#ifdef __KERNEL__
+# include <linux/config.h>
+# include <linux/module.h>
+# include <linux/kernel.h>
+#else
+# include <liblustre.h>
+#endif
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/string.h>
-#include <linux/stat.h>
-#include <linux/errno.h>
-#include <linux/locks.h>
-#include <linux/unistd.h>
-
-#include <asm/system.h>
-#include <asm/uaccess.h>
-#include <linux/module.h>
-
-#include <linux/fs.h>
-#include <linux/stat.h>
-#include <asm/uaccess.h>
-#include <linux/vmalloc.h>
-#include <asm/segment.h>
-#include <linux/miscdevice.h>
-
-#include <linux/obd_support.h>
-#include <linux/lustre_lib.h>
-#include <linux/lustre_idl.h>
+#include <linux/obd_class.h>
#include <linux/lustre_mds.h>
+#include "mdc_internal.h"
+
+/* mdc_setattr does its own semaphore handling */
+static int mdc_reint(struct ptlrpc_request *request, int level)
+{
+ int rc;
+ __u32 *opcodeptr;
+
+ opcodeptr = lustre_msg_buf(request->rq_reqmsg, 0, sizeof (*opcodeptr));
+ request->rq_level = level;
+
+ if (!(*opcodeptr == REINT_SETATTR))
+ mdc_get_rpc_lock(&mdc_rpc_lock, NULL);
+ rc = ptlrpc_queue_wait(request);
+ if (!(*opcodeptr == REINT_SETATTR))
+ mdc_put_rpc_lock(&mdc_rpc_lock, NULL);
+
+ if (rc)
+ CDEBUG(D_INFO, "error in handling %d\n", rc);
+ return rc;
+}
+
+/* If mdc_setattr is called with an 'iattr', then it is a normal RPC that
+ * should take the normal semaphore and go to the normal portal.
+ *
+ * If it is called with iattr->ia_valid & ATTR_FROM_OPEN, then it is a
+ * magic open-path setattr that should take the setattr semaphore and
+ * go to the setattr portal. */
+int mdc_setattr(struct lustre_handle *conn,
+ struct mdc_op_data *data,
+ struct iattr *iattr, void *ea, int ealen,
+ struct ptlrpc_request **request)
+{
+ struct ptlrpc_request *req;
+ struct mds_rec_setattr *rec;
+ struct mdc_rpc_lock *rpc_lock;
+ int rc, bufcount = 1, size[2] = {sizeof(*rec), ealen};
+ ENTRY;
+
+ LASSERT(iattr != NULL);
+
+ if (ealen > 0)
+ bufcount = 2;
+
+ req = ptlrpc_prep_req(class_conn2cliimp(conn), MDS_REINT, bufcount,
+ size, NULL);
+ if (!req)
+ RETURN(-ENOMEM);
+
+ if (iattr->ia_valid & ATTR_FROM_OPEN) {
+ req->rq_request_portal = MDS_SETATTR_PORTAL; //XXX FIXME bug 249
+ rpc_lock = &mdc_setattr_lock;
+ } else
+ rpc_lock = &mdc_rpc_lock;
+
+ mds_setattr_pack(req, data, iattr, ea, ealen);
+
+ size[0] = sizeof(struct mds_body);
+ req->rq_replen = lustre_msg_size(1, size);
+
+ mdc_get_rpc_lock(rpc_lock, NULL);
+ rc = mdc_reint(req, LUSTRE_CONN_FULL);
+ mdc_put_rpc_lock(rpc_lock, NULL);
+
+ *request = req;
+ if (rc == -ERESTARTSYS)
+ rc = 0;
-extern int mdc_reint(struct mds_request *request);
-extern struct mds_request *mds_prep_req(int opcode, int namelen, char *name, int tgtlen, char *tgt);
+ RETURN(rc);
+}
+
+int mdc_create(struct lustre_handle *conn,
+ struct mdc_op_data *op_data,
+ const void *data, int datalen,
+ int mode, __u32 uid, __u32 gid, __u64 time, __u64 rdev,
+ struct ptlrpc_request **request)
+{
+ struct ptlrpc_request *req;
+ int rc, size[3] = {sizeof(struct mds_rec_create),
+ op_data->namelen + 1, 0};
+ int level, bufcount = 2;
+// ENTRY;
+
+ if (data && datalen) {
+ size[bufcount] = datalen;
+ bufcount++;
+ }
+
+ req = ptlrpc_prep_req(class_conn2cliimp(conn), MDS_REINT, bufcount,
+ size, NULL);
+ if (!req)
+ return -ENOMEM;
+// RETURN(-ENOMEM);
+
+ /* mds_create_pack fills msg->bufs[1] with name
+ * and msg->bufs[2] with tgt, for symlinks or lov MD data */
+ mds_create_pack(req, 0, op_data,
+ mode, rdev, uid, gid, time,
+ data, datalen);
+
+ size[0] = sizeof(struct mds_body);
+ req->rq_replen = lustre_msg_size(1, size);
+
+ level = LUSTRE_CONN_FULL;
+ resend:
+ rc = mdc_reint(req, level);
+ /* Resend if we were told to. */
+ if (rc == -ERESTARTSYS) {
+ level = LUSTRE_CONN_RECOVD;
+ goto resend;
+ }
+
+ if (!rc)
+ mdc_store_inode_generation(req, 0, 0);
+
+ *request = req;
+ return rc;
+// RETURN(rc);
+}
+
+int mdc_unlink(struct lustre_handle *conn,
+ struct mdc_op_data *data,
+ struct ptlrpc_request **request)
+{
+ struct obd_device *obddev = class_conn2obd(conn);
+ struct ptlrpc_request *req = *request;
+ int rc, size[2] = {sizeof(struct mds_rec_unlink), data->namelen + 1};
+ ENTRY;
+
+ LASSERT(req == NULL);
+
+ req = ptlrpc_prep_req(class_conn2cliimp(conn), MDS_REINT, 2, size,
+ NULL);
+ if (!req)
+ RETURN(-ENOMEM);
+ *request = req;
+
+ size[0] = sizeof(struct mds_body);
+ size[1] = obddev->u.cli.cl_max_mds_easize;
+ req->rq_replen = lustre_msg_size(2, size);
+
+ mds_unlink_pack(req, 0, data);
+
+ rc = mdc_reint(req, LUSTRE_CONN_FULL);
+ if (rc == -ERESTARTSYS)
+ rc = 0;
+ RETURN(rc);
+}
-int mdc_setattr(struct inode *inode, struct iattr *iattr,
- struct mds_rep **rep, struct mds_rep_hdr **hdr)
+int mdc_link(struct lustre_handle *conn,
+ struct mdc_op_data *data,
+ struct ptlrpc_request **request)
{
- int rc;
- struct mds_request *request;
- struct mds_rec_setattr *rec;
-
- request = mds_prep_req(MDS_REINT, 0, NULL, sizeof(*rec), NULL);
- if (!request) {
- printk("mdc request: cannot pack\n");
- return -ENOMEM;
- }
-
- rec = mds_req_tgt(request->rq_req);
- mds_setattr_pack(rec, inode, iattr);
- request->rq_req->opcode = HTON__u32(REINT_SETATTR);
-
- rc = mdc_reint(request);
-
- if (rep) {
- *rep = request->rq_rep;
- }
- if (hdr) {
- *hdr = request->rq_rephdr;
- }
-
- kfree(request);
- return rc;
+ struct ptlrpc_request *req;
+ int rc, size[2] = {sizeof(struct mds_rec_link), data->namelen + 1};
+ ENTRY;
+
+ req = ptlrpc_prep_req(class_conn2cliimp(conn), MDS_REINT, 2, size,
+ NULL);
+ if (!req)
+ RETURN(-ENOMEM);
+
+ mds_link_pack(req, 0, data);
+
+ size[0] = sizeof(struct mds_body);
+ req->rq_replen = lustre_msg_size(1, size);
+
+ rc = mdc_reint(req, LUSTRE_CONN_FULL);
+ *request = req;
+ if (rc == -ERESTARTSYS)
+ rc = 0;
+
+ RETURN(rc);
}
-int mdc_create(struct inode *dir, char *name, int mode, __u64 id,
- __u32 uid, __u32 gid, __u64 time,
- struct mds_rep **rep, struct mds_rep_hdr **hdr)
+int mdc_rename(struct lustre_handle *conn,
+ struct mdc_op_data *data,
+ const char *old, int oldlen,
+ const char *new, int newlen,
+ struct ptlrpc_request **request)
{
- int rc;
- struct mds_request *request;
- struct mds_rec_create *rec;
-
- request = mds_prep_req(MDS_REINT, 0, NULL,
- sizeof(*rec) + size_round(strlen(name)),
- NULL);
- if (!request) {
- printk("mdc_create: cannot pack\n");
- return -ENOMEM;
- }
-
- rec = mds_req_tgt(request->rq_req);
- mds_create_pack(rec, dir, name, mode, id, uid, gid, time);
-
- rc = mdc_reint(request);
-
- if (rep) {
- *rep = request->rq_rep;
- }
- if (hdr) {
- *hdr = request->rq_rephdr;
- }
-
- kfree(request);
- return rc;
+ struct ptlrpc_request *req;
+ int rc, size[3] = {sizeof(struct mds_rec_rename), oldlen + 1,
+ newlen + 1};
+ ENTRY;
+
+ req = ptlrpc_prep_req(class_conn2cliimp(conn), MDS_REINT, 3, size,
+ NULL);
+ if (!req)
+ RETURN(-ENOMEM);
+
+ mds_rename_pack(req, 0, data, old, oldlen, new, newlen);
+
+ size[0] = sizeof(struct mds_body);
+ req->rq_replen = lustre_msg_size(1, size);
+
+ rc = mdc_reint(req, LUSTRE_CONN_FULL);
+ *request = req;
+ if (rc == -ERESTARTSYS)
+ rc = 0;
+
+ RETURN(rc);
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff