3562 lines
94 KiB
C
3562 lines
94 KiB
C
/*
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* GPL HEADER START
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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 only,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License version 2 for more details (a copy is included
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* in the LICENSE file that accompanied this code).
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*
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* You should have received a copy of the GNU General Public License
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* version 2 along with this program; If not, see
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* http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*
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* GPL HEADER END
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*/
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/*
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* Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
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* Use is subject to license terms.
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*
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* Copyright (c) 2011, 2012, Intel Corporation.
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*/
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/*
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* This file is part of Lustre, http://www.lustre.org/
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* Lustre is a trademark of Sun Microsystems, Inc.
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*
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* lustre/llite/file.c
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*
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* Author: Peter Braam <braam@clusterfs.com>
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* Author: Phil Schwan <phil@clusterfs.com>
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* Author: Andreas Dilger <adilger@clusterfs.com>
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*/
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#define DEBUG_SUBSYSTEM S_LLITE
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#include "../include/lustre_dlm.h"
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#include "../include/lustre_lite.h"
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#include <linux/pagemap.h>
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#include <linux/file.h>
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#include "llite_internal.h"
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#include "../include/lustre/ll_fiemap.h"
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#include "../include/cl_object.h"
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static int
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ll_put_grouplock(struct inode *inode, struct file *file, unsigned long arg);
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static int ll_lease_close(struct obd_client_handle *och, struct inode *inode,
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bool *lease_broken);
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static enum llioc_iter
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ll_iocontrol_call(struct inode *inode, struct file *file,
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unsigned int cmd, unsigned long arg, int *rcp);
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static struct ll_file_data *ll_file_data_get(void)
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{
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struct ll_file_data *fd;
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OBD_SLAB_ALLOC_PTR_GFP(fd, ll_file_data_slab, GFP_NOFS);
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if (fd == NULL)
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return NULL;
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fd->fd_write_failed = false;
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return fd;
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}
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static void ll_file_data_put(struct ll_file_data *fd)
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{
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if (fd != NULL)
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OBD_SLAB_FREE_PTR(fd, ll_file_data_slab);
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}
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void ll_pack_inode2opdata(struct inode *inode, struct md_op_data *op_data,
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struct lustre_handle *fh)
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{
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op_data->op_fid1 = ll_i2info(inode)->lli_fid;
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op_data->op_attr.ia_mode = inode->i_mode;
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op_data->op_attr.ia_atime = inode->i_atime;
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op_data->op_attr.ia_mtime = inode->i_mtime;
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op_data->op_attr.ia_ctime = inode->i_ctime;
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op_data->op_attr.ia_size = i_size_read(inode);
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op_data->op_attr_blocks = inode->i_blocks;
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((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags =
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ll_inode_to_ext_flags(inode->i_flags);
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op_data->op_ioepoch = ll_i2info(inode)->lli_ioepoch;
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if (fh)
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op_data->op_handle = *fh;
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op_data->op_capa1 = ll_mdscapa_get(inode);
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if (LLIF_DATA_MODIFIED & ll_i2info(inode)->lli_flags)
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op_data->op_bias |= MDS_DATA_MODIFIED;
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}
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/**
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* Closes the IO epoch and packs all the attributes into @op_data for
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* the CLOSE rpc.
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*/
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static void ll_prepare_close(struct inode *inode, struct md_op_data *op_data,
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struct obd_client_handle *och)
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{
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op_data->op_attr.ia_valid = ATTR_MODE | ATTR_ATIME | ATTR_ATIME_SET |
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ATTR_MTIME | ATTR_MTIME_SET |
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ATTR_CTIME | ATTR_CTIME_SET;
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if (!(och->och_flags & FMODE_WRITE))
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goto out;
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if (!exp_connect_som(ll_i2mdexp(inode)) || !S_ISREG(inode->i_mode))
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op_data->op_attr.ia_valid |= ATTR_SIZE | ATTR_BLOCKS;
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else
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ll_ioepoch_close(inode, op_data, &och, 0);
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out:
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ll_pack_inode2opdata(inode, op_data, &och->och_fh);
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ll_prep_md_op_data(op_data, inode, NULL, NULL,
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0, 0, LUSTRE_OPC_ANY, NULL);
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}
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static int ll_close_inode_openhandle(struct obd_export *md_exp,
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struct inode *inode,
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struct obd_client_handle *och,
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const __u64 *data_version)
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{
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struct obd_export *exp = ll_i2mdexp(inode);
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struct md_op_data *op_data;
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struct ptlrpc_request *req = NULL;
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struct obd_device *obd = class_exp2obd(exp);
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int epoch_close = 1;
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int rc;
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if (obd == NULL) {
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/*
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* XXX: in case of LMV, is this correct to access
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* ->exp_handle?
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*/
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CERROR("Invalid MDC connection handle %#llx\n",
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ll_i2mdexp(inode)->exp_handle.h_cookie);
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GOTO(out, rc = 0);
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}
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OBD_ALLOC_PTR(op_data);
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if (op_data == NULL)
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GOTO(out, rc = -ENOMEM); // XXX We leak openhandle and request here.
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ll_prepare_close(inode, op_data, och);
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if (data_version != NULL) {
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/* Pass in data_version implies release. */
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op_data->op_bias |= MDS_HSM_RELEASE;
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op_data->op_data_version = *data_version;
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op_data->op_lease_handle = och->och_lease_handle;
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op_data->op_attr.ia_valid |= ATTR_SIZE | ATTR_BLOCKS;
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}
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epoch_close = (op_data->op_flags & MF_EPOCH_CLOSE);
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rc = md_close(md_exp, op_data, och->och_mod, &req);
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if (rc == -EAGAIN) {
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/* This close must have the epoch closed. */
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LASSERT(epoch_close);
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/* MDS has instructed us to obtain Size-on-MDS attribute from
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* OSTs and send setattr to back to MDS. */
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rc = ll_som_update(inode, op_data);
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if (rc) {
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CERROR("inode %lu mdc Size-on-MDS update failed: "
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"rc = %d\n", inode->i_ino, rc);
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rc = 0;
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}
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} else if (rc) {
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CERROR("inode %lu mdc close failed: rc = %d\n",
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inode->i_ino, rc);
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}
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/* DATA_MODIFIED flag was successfully sent on close, cancel data
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* modification flag. */
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if (rc == 0 && (op_data->op_bias & MDS_DATA_MODIFIED)) {
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struct ll_inode_info *lli = ll_i2info(inode);
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spin_lock(&lli->lli_lock);
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lli->lli_flags &= ~LLIF_DATA_MODIFIED;
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spin_unlock(&lli->lli_lock);
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}
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if (rc == 0) {
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rc = ll_objects_destroy(req, inode);
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if (rc)
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CERROR("inode %lu ll_objects destroy: rc = %d\n",
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inode->i_ino, rc);
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}
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if (rc == 0 && op_data->op_bias & MDS_HSM_RELEASE) {
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struct mdt_body *body;
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body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
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if (!(body->valid & OBD_MD_FLRELEASED))
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rc = -EBUSY;
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}
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ll_finish_md_op_data(op_data);
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out:
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if (exp_connect_som(exp) && !epoch_close &&
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S_ISREG(inode->i_mode) && (och->och_flags & FMODE_WRITE)) {
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ll_queue_done_writing(inode, LLIF_DONE_WRITING);
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} else {
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md_clear_open_replay_data(md_exp, och);
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/* Free @och if it is not waiting for DONE_WRITING. */
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och->och_fh.cookie = DEAD_HANDLE_MAGIC;
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OBD_FREE_PTR(och);
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}
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if (req) /* This is close request */
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ptlrpc_req_finished(req);
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return rc;
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}
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int ll_md_real_close(struct inode *inode, fmode_t fmode)
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{
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struct ll_inode_info *lli = ll_i2info(inode);
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struct obd_client_handle **och_p;
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struct obd_client_handle *och;
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__u64 *och_usecount;
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int rc = 0;
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if (fmode & FMODE_WRITE) {
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och_p = &lli->lli_mds_write_och;
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och_usecount = &lli->lli_open_fd_write_count;
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} else if (fmode & FMODE_EXEC) {
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och_p = &lli->lli_mds_exec_och;
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och_usecount = &lli->lli_open_fd_exec_count;
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} else {
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LASSERT(fmode & FMODE_READ);
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och_p = &lli->lli_mds_read_och;
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och_usecount = &lli->lli_open_fd_read_count;
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}
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mutex_lock(&lli->lli_och_mutex);
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if (*och_usecount > 0) {
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/* There are still users of this handle, so skip
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* freeing it. */
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mutex_unlock(&lli->lli_och_mutex);
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return 0;
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}
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och=*och_p;
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*och_p = NULL;
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mutex_unlock(&lli->lli_och_mutex);
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if (och != NULL) {
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/* There might be a race and this handle may already
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be closed. */
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rc = ll_close_inode_openhandle(ll_i2sbi(inode)->ll_md_exp,
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inode, och, NULL);
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}
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return rc;
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}
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static int ll_md_close(struct obd_export *md_exp, struct inode *inode,
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struct file *file)
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{
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struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
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struct ll_inode_info *lli = ll_i2info(inode);
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int rc = 0;
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/* clear group lock, if present */
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if (unlikely(fd->fd_flags & LL_FILE_GROUP_LOCKED))
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ll_put_grouplock(inode, file, fd->fd_grouplock.cg_gid);
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if (fd->fd_lease_och != NULL) {
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bool lease_broken;
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/* Usually the lease is not released when the
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* application crashed, we need to release here. */
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rc = ll_lease_close(fd->fd_lease_och, inode, &lease_broken);
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CDEBUG(rc ? D_ERROR : D_INODE, "Clean up lease "DFID" %d/%d\n",
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PFID(&lli->lli_fid), rc, lease_broken);
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fd->fd_lease_och = NULL;
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}
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if (fd->fd_och != NULL) {
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rc = ll_close_inode_openhandle(md_exp, inode, fd->fd_och, NULL);
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fd->fd_och = NULL;
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GOTO(out, rc);
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}
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/* Let's see if we have good enough OPEN lock on the file and if
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we can skip talking to MDS */
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if (file->f_dentry->d_inode) { /* Can this ever be false? */
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int lockmode;
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__u64 flags = LDLM_FL_BLOCK_GRANTED | LDLM_FL_TEST_LOCK;
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struct lustre_handle lockh;
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struct inode *inode = file->f_dentry->d_inode;
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ldlm_policy_data_t policy = {.l_inodebits={MDS_INODELOCK_OPEN}};
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mutex_lock(&lli->lli_och_mutex);
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if (fd->fd_omode & FMODE_WRITE) {
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lockmode = LCK_CW;
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LASSERT(lli->lli_open_fd_write_count);
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lli->lli_open_fd_write_count--;
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} else if (fd->fd_omode & FMODE_EXEC) {
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lockmode = LCK_PR;
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LASSERT(lli->lli_open_fd_exec_count);
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lli->lli_open_fd_exec_count--;
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} else {
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lockmode = LCK_CR;
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LASSERT(lli->lli_open_fd_read_count);
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lli->lli_open_fd_read_count--;
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}
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mutex_unlock(&lli->lli_och_mutex);
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if (!md_lock_match(md_exp, flags, ll_inode2fid(inode),
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LDLM_IBITS, &policy, lockmode,
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&lockh)) {
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rc = ll_md_real_close(file->f_dentry->d_inode,
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fd->fd_omode);
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}
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} else {
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CERROR("Releasing a file %p with negative dentry %p. Name %s",
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file, file->f_dentry, file->f_dentry->d_name.name);
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}
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out:
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LUSTRE_FPRIVATE(file) = NULL;
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ll_file_data_put(fd);
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ll_capa_close(inode);
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return rc;
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}
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/* While this returns an error code, fput() the caller does not, so we need
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* to make every effort to clean up all of our state here. Also, applications
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* rarely check close errors and even if an error is returned they will not
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* re-try the close call.
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*/
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int ll_file_release(struct inode *inode, struct file *file)
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{
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struct ll_file_data *fd;
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struct ll_sb_info *sbi = ll_i2sbi(inode);
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struct ll_inode_info *lli = ll_i2info(inode);
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int rc;
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CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
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inode->i_generation, inode);
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#ifdef CONFIG_FS_POSIX_ACL
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if (sbi->ll_flags & LL_SBI_RMT_CLIENT &&
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inode == inode->i_sb->s_root->d_inode) {
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struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
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LASSERT(fd != NULL);
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if (unlikely(fd->fd_flags & LL_FILE_RMTACL)) {
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fd->fd_flags &= ~LL_FILE_RMTACL;
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rct_del(&sbi->ll_rct, current_pid());
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et_search_free(&sbi->ll_et, current_pid());
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}
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}
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#endif
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if (inode->i_sb->s_root != file->f_dentry)
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ll_stats_ops_tally(sbi, LPROC_LL_RELEASE, 1);
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fd = LUSTRE_FPRIVATE(file);
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LASSERT(fd != NULL);
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/* The last ref on @file, maybe not the the owner pid of statahead.
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* Different processes can open the same dir, "ll_opendir_key" means:
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* it is me that should stop the statahead thread. */
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if (S_ISDIR(inode->i_mode) && lli->lli_opendir_key == fd &&
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lli->lli_opendir_pid != 0)
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ll_stop_statahead(inode, lli->lli_opendir_key);
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if (inode->i_sb->s_root == file->f_dentry) {
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LUSTRE_FPRIVATE(file) = NULL;
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ll_file_data_put(fd);
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return 0;
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}
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|
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if (!S_ISDIR(inode->i_mode)) {
|
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lov_read_and_clear_async_rc(lli->lli_clob);
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lli->lli_async_rc = 0;
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}
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rc = ll_md_close(sbi->ll_md_exp, inode, file);
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if (CFS_FAIL_TIMEOUT_MS(OBD_FAIL_PTLRPC_DUMP_LOG, cfs_fail_val))
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libcfs_debug_dumplog();
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return rc;
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}
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|
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static int ll_intent_file_open(struct file *file, void *lmm,
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int lmmsize, struct lookup_intent *itp)
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{
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struct ll_sb_info *sbi = ll_i2sbi(file->f_dentry->d_inode);
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struct dentry *parent = file->f_dentry->d_parent;
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const char *name = file->f_dentry->d_name.name;
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const int len = file->f_dentry->d_name.len;
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struct md_op_data *op_data;
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struct ptlrpc_request *req;
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__u32 opc = LUSTRE_OPC_ANY;
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int rc;
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if (!parent)
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return -ENOENT;
|
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|
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/* Usually we come here only for NFSD, and we want open lock.
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But we can also get here with pre 2.6.15 patchless kernels, and in
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that case that lock is also ok */
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/* We can also get here if there was cached open handle in revalidate_it
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* but it disappeared while we were getting from there to ll_file_open.
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* But this means this file was closed and immediately opened which
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* makes a good candidate for using OPEN lock */
|
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/* If lmmsize & lmm are not 0, we are just setting stripe info
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* parameters. No need for the open lock */
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if (lmm == NULL && lmmsize == 0) {
|
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itp->it_flags |= MDS_OPEN_LOCK;
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if (itp->it_flags & FMODE_WRITE)
|
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opc = LUSTRE_OPC_CREATE;
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}
|
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op_data = ll_prep_md_op_data(NULL, parent->d_inode,
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file->f_dentry->d_inode, name, len,
|
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O_RDWR, opc, NULL);
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if (IS_ERR(op_data))
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return PTR_ERR(op_data);
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itp->it_flags |= MDS_OPEN_BY_FID;
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rc = md_intent_lock(sbi->ll_md_exp, op_data, lmm, lmmsize, itp,
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0 /*unused */, &req, ll_md_blocking_ast, 0);
|
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ll_finish_md_op_data(op_data);
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if (rc == -ESTALE) {
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/* reason for keep own exit path - don`t flood log
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* with messages with -ESTALE errors.
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*/
|
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if (!it_disposition(itp, DISP_OPEN_OPEN) ||
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it_open_error(DISP_OPEN_OPEN, itp))
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GOTO(out, rc);
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ll_release_openhandle(file->f_dentry, itp);
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GOTO(out, rc);
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}
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|
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if (it_disposition(itp, DISP_LOOKUP_NEG))
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GOTO(out, rc = -ENOENT);
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|
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if (rc != 0 || it_open_error(DISP_OPEN_OPEN, itp)) {
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rc = rc ? rc : it_open_error(DISP_OPEN_OPEN, itp);
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CDEBUG(D_VFSTRACE, "lock enqueue: err: %d\n", rc);
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GOTO(out, rc);
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}
|
|
|
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rc = ll_prep_inode(&file->f_dentry->d_inode, req, NULL, itp);
|
|
if (!rc && itp->d.lustre.it_lock_mode)
|
|
ll_set_lock_data(sbi->ll_md_exp, file->f_dentry->d_inode,
|
|
itp, NULL);
|
|
|
|
out:
|
|
ptlrpc_req_finished(req);
|
|
ll_intent_drop_lock(itp);
|
|
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* Assign an obtained @ioepoch to client's inode. No lock is needed, MDS does
|
|
* not believe attributes if a few ioepoch holders exist. Attributes for
|
|
* previous ioepoch if new one is opened are also skipped by MDS.
|
|
*/
|
|
void ll_ioepoch_open(struct ll_inode_info *lli, __u64 ioepoch)
|
|
{
|
|
if (ioepoch && lli->lli_ioepoch != ioepoch) {
|
|
lli->lli_ioepoch = ioepoch;
|
|
CDEBUG(D_INODE, "Epoch %llu opened on "DFID"\n",
|
|
ioepoch, PFID(&lli->lli_fid));
|
|
}
|
|
}
|
|
|
|
static int ll_och_fill(struct obd_export *md_exp, struct lookup_intent *it,
|
|
struct obd_client_handle *och)
|
|
{
|
|
struct ptlrpc_request *req = it->d.lustre.it_data;
|
|
struct mdt_body *body;
|
|
|
|
body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
|
|
och->och_fh = body->handle;
|
|
och->och_fid = body->fid1;
|
|
och->och_lease_handle.cookie = it->d.lustre.it_lock_handle;
|
|
och->och_magic = OBD_CLIENT_HANDLE_MAGIC;
|
|
och->och_flags = it->it_flags;
|
|
|
|
return md_set_open_replay_data(md_exp, och, it);
|
|
}
|
|
|
|
static int ll_local_open(struct file *file, struct lookup_intent *it,
|
|
struct ll_file_data *fd, struct obd_client_handle *och)
|
|
{
|
|
struct inode *inode = file->f_dentry->d_inode;
|
|
struct ll_inode_info *lli = ll_i2info(inode);
|
|
|
|
LASSERT(!LUSTRE_FPRIVATE(file));
|
|
|
|
LASSERT(fd != NULL);
|
|
|
|
if (och) {
|
|
struct ptlrpc_request *req = it->d.lustre.it_data;
|
|
struct mdt_body *body;
|
|
int rc;
|
|
|
|
rc = ll_och_fill(ll_i2sbi(inode)->ll_md_exp, it, och);
|
|
if (rc != 0)
|
|
return rc;
|
|
|
|
body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
|
|
ll_ioepoch_open(lli, body->ioepoch);
|
|
}
|
|
|
|
LUSTRE_FPRIVATE(file) = fd;
|
|
ll_readahead_init(inode, &fd->fd_ras);
|
|
fd->fd_omode = it->it_flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
|
|
return 0;
|
|
}
|
|
|
|
/* Open a file, and (for the very first open) create objects on the OSTs at
|
|
* this time. If opened with O_LOV_DELAY_CREATE, then we don't do the object
|
|
* creation or open until ll_lov_setstripe() ioctl is called.
|
|
*
|
|
* If we already have the stripe MD locally then we don't request it in
|
|
* md_open(), by passing a lmm_size = 0.
|
|
*
|
|
* It is up to the application to ensure no other processes open this file
|
|
* in the O_LOV_DELAY_CREATE case, or the default striping pattern will be
|
|
* used. We might be able to avoid races of that sort by getting lli_open_sem
|
|
* before returning in the O_LOV_DELAY_CREATE case and dropping it here
|
|
* or in ll_file_release(), but I'm not sure that is desirable/necessary.
|
|
*/
|
|
int ll_file_open(struct inode *inode, struct file *file)
|
|
{
|
|
struct ll_inode_info *lli = ll_i2info(inode);
|
|
struct lookup_intent *it, oit = { .it_op = IT_OPEN,
|
|
.it_flags = file->f_flags };
|
|
struct obd_client_handle **och_p = NULL;
|
|
__u64 *och_usecount = NULL;
|
|
struct ll_file_data *fd;
|
|
int rc = 0, opendir_set = 0;
|
|
|
|
CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p), flags %o\n", inode->i_ino,
|
|
inode->i_generation, inode, file->f_flags);
|
|
|
|
it = file->private_data; /* XXX: compat macro */
|
|
file->private_data = NULL; /* prevent ll_local_open assertion */
|
|
|
|
fd = ll_file_data_get();
|
|
if (fd == NULL)
|
|
GOTO(out_openerr, rc = -ENOMEM);
|
|
|
|
fd->fd_file = file;
|
|
if (S_ISDIR(inode->i_mode)) {
|
|
spin_lock(&lli->lli_sa_lock);
|
|
if (lli->lli_opendir_key == NULL && lli->lli_sai == NULL &&
|
|
lli->lli_opendir_pid == 0) {
|
|
lli->lli_opendir_key = fd;
|
|
lli->lli_opendir_pid = current_pid();
|
|
opendir_set = 1;
|
|
}
|
|
spin_unlock(&lli->lli_sa_lock);
|
|
}
|
|
|
|
if (inode->i_sb->s_root == file->f_dentry) {
|
|
LUSTRE_FPRIVATE(file) = fd;
|
|
return 0;
|
|
}
|
|
|
|
if (!it || !it->d.lustre.it_disposition) {
|
|
/* Convert f_flags into access mode. We cannot use file->f_mode,
|
|
* because everything but O_ACCMODE mask was stripped from
|
|
* there */
|
|
if ((oit.it_flags + 1) & O_ACCMODE)
|
|
oit.it_flags++;
|
|
if (file->f_flags & O_TRUNC)
|
|
oit.it_flags |= FMODE_WRITE;
|
|
|
|
/* kernel only call f_op->open in dentry_open. filp_open calls
|
|
* dentry_open after call to open_namei that checks permissions.
|
|
* Only nfsd_open call dentry_open directly without checking
|
|
* permissions and because of that this code below is safe. */
|
|
if (oit.it_flags & (FMODE_WRITE | FMODE_READ))
|
|
oit.it_flags |= MDS_OPEN_OWNEROVERRIDE;
|
|
|
|
/* We do not want O_EXCL here, presumably we opened the file
|
|
* already? XXX - NFS implications? */
|
|
oit.it_flags &= ~O_EXCL;
|
|
|
|
/* bug20584, if "it_flags" contains O_CREAT, the file will be
|
|
* created if necessary, then "IT_CREAT" should be set to keep
|
|
* consistent with it */
|
|
if (oit.it_flags & O_CREAT)
|
|
oit.it_op |= IT_CREAT;
|
|
|
|
it = &oit;
|
|
}
|
|
|
|
restart:
|
|
/* Let's see if we have file open on MDS already. */
|
|
if (it->it_flags & FMODE_WRITE) {
|
|
och_p = &lli->lli_mds_write_och;
|
|
och_usecount = &lli->lli_open_fd_write_count;
|
|
} else if (it->it_flags & FMODE_EXEC) {
|
|
och_p = &lli->lli_mds_exec_och;
|
|
och_usecount = &lli->lli_open_fd_exec_count;
|
|
} else {
|
|
och_p = &lli->lli_mds_read_och;
|
|
och_usecount = &lli->lli_open_fd_read_count;
|
|
}
|
|
|
|
mutex_lock(&lli->lli_och_mutex);
|
|
if (*och_p) { /* Open handle is present */
|
|
if (it_disposition(it, DISP_OPEN_OPEN)) {
|
|
/* Well, there's extra open request that we do not need,
|
|
let's close it somehow. This will decref request. */
|
|
rc = it_open_error(DISP_OPEN_OPEN, it);
|
|
if (rc) {
|
|
mutex_unlock(&lli->lli_och_mutex);
|
|
GOTO(out_openerr, rc);
|
|
}
|
|
|
|
ll_release_openhandle(file->f_dentry, it);
|
|
}
|
|
(*och_usecount)++;
|
|
|
|
rc = ll_local_open(file, it, fd, NULL);
|
|
if (rc) {
|
|
(*och_usecount)--;
|
|
mutex_unlock(&lli->lli_och_mutex);
|
|
GOTO(out_openerr, rc);
|
|
}
|
|
} else {
|
|
LASSERT(*och_usecount == 0);
|
|
if (!it->d.lustre.it_disposition) {
|
|
/* We cannot just request lock handle now, new ELC code
|
|
means that one of other OPEN locks for this file
|
|
could be cancelled, and since blocking ast handler
|
|
would attempt to grab och_mutex as well, that would
|
|
result in a deadlock */
|
|
mutex_unlock(&lli->lli_och_mutex);
|
|
it->it_create_mode |= M_CHECK_STALE;
|
|
rc = ll_intent_file_open(file, NULL, 0, it);
|
|
it->it_create_mode &= ~M_CHECK_STALE;
|
|
if (rc)
|
|
GOTO(out_openerr, rc);
|
|
|
|
goto restart;
|
|
}
|
|
OBD_ALLOC(*och_p, sizeof (struct obd_client_handle));
|
|
if (!*och_p)
|
|
GOTO(out_och_free, rc = -ENOMEM);
|
|
|
|
(*och_usecount)++;
|
|
|
|
/* md_intent_lock() didn't get a request ref if there was an
|
|
* open error, so don't do cleanup on the request here
|
|
* (bug 3430) */
|
|
/* XXX (green): Should not we bail out on any error here, not
|
|
* just open error? */
|
|
rc = it_open_error(DISP_OPEN_OPEN, it);
|
|
if (rc)
|
|
GOTO(out_och_free, rc);
|
|
|
|
LASSERT(it_disposition(it, DISP_ENQ_OPEN_REF));
|
|
|
|
rc = ll_local_open(file, it, fd, *och_p);
|
|
if (rc)
|
|
GOTO(out_och_free, rc);
|
|
}
|
|
mutex_unlock(&lli->lli_och_mutex);
|
|
fd = NULL;
|
|
|
|
/* Must do this outside lli_och_mutex lock to prevent deadlock where
|
|
different kind of OPEN lock for this same inode gets cancelled
|
|
by ldlm_cancel_lru */
|
|
if (!S_ISREG(inode->i_mode))
|
|
GOTO(out_och_free, rc);
|
|
|
|
ll_capa_open(inode);
|
|
|
|
if (!lli->lli_has_smd &&
|
|
(cl_is_lov_delay_create(file->f_flags) ||
|
|
(file->f_mode & FMODE_WRITE) == 0)) {
|
|
CDEBUG(D_INODE, "object creation was delayed\n");
|
|
GOTO(out_och_free, rc);
|
|
}
|
|
cl_lov_delay_create_clear(&file->f_flags);
|
|
GOTO(out_och_free, rc);
|
|
|
|
out_och_free:
|
|
if (rc) {
|
|
if (och_p && *och_p) {
|
|
OBD_FREE(*och_p, sizeof (struct obd_client_handle));
|
|
*och_p = NULL; /* OBD_FREE writes some magic there */
|
|
(*och_usecount)--;
|
|
}
|
|
mutex_unlock(&lli->lli_och_mutex);
|
|
|
|
out_openerr:
|
|
if (opendir_set != 0)
|
|
ll_stop_statahead(inode, lli->lli_opendir_key);
|
|
if (fd != NULL)
|
|
ll_file_data_put(fd);
|
|
} else {
|
|
ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_OPEN, 1);
|
|
}
|
|
|
|
if (it && it_disposition(it, DISP_ENQ_OPEN_REF)) {
|
|
ptlrpc_req_finished(it->d.lustre.it_data);
|
|
it_clear_disposition(it, DISP_ENQ_OPEN_REF);
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int ll_md_blocking_lease_ast(struct ldlm_lock *lock,
|
|
struct ldlm_lock_desc *desc, void *data, int flag)
|
|
{
|
|
int rc;
|
|
struct lustre_handle lockh;
|
|
|
|
switch (flag) {
|
|
case LDLM_CB_BLOCKING:
|
|
ldlm_lock2handle(lock, &lockh);
|
|
rc = ldlm_cli_cancel(&lockh, LCF_ASYNC);
|
|
if (rc < 0) {
|
|
CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
|
|
return rc;
|
|
}
|
|
break;
|
|
case LDLM_CB_CANCELING:
|
|
/* do nothing */
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Acquire a lease and open the file.
|
|
*/
|
|
static struct obd_client_handle *
|
|
ll_lease_open(struct inode *inode, struct file *file, fmode_t fmode,
|
|
__u64 open_flags)
|
|
{
|
|
struct lookup_intent it = { .it_op = IT_OPEN };
|
|
struct ll_sb_info *sbi = ll_i2sbi(inode);
|
|
struct md_op_data *op_data;
|
|
struct ptlrpc_request *req;
|
|
struct lustre_handle old_handle = { 0 };
|
|
struct obd_client_handle *och = NULL;
|
|
int rc;
|
|
int rc2;
|
|
|
|
if (fmode != FMODE_WRITE && fmode != FMODE_READ)
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
if (file != NULL) {
|
|
struct ll_inode_info *lli = ll_i2info(inode);
|
|
struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
|
|
struct obd_client_handle **och_p;
|
|
__u64 *och_usecount;
|
|
|
|
if (!(fmode & file->f_mode) || (file->f_mode & FMODE_EXEC))
|
|
return ERR_PTR(-EPERM);
|
|
|
|
/* Get the openhandle of the file */
|
|
rc = -EBUSY;
|
|
mutex_lock(&lli->lli_och_mutex);
|
|
if (fd->fd_lease_och != NULL) {
|
|
mutex_unlock(&lli->lli_och_mutex);
|
|
return ERR_PTR(rc);
|
|
}
|
|
|
|
if (fd->fd_och == NULL) {
|
|
if (file->f_mode & FMODE_WRITE) {
|
|
LASSERT(lli->lli_mds_write_och != NULL);
|
|
och_p = &lli->lli_mds_write_och;
|
|
och_usecount = &lli->lli_open_fd_write_count;
|
|
} else {
|
|
LASSERT(lli->lli_mds_read_och != NULL);
|
|
och_p = &lli->lli_mds_read_och;
|
|
och_usecount = &lli->lli_open_fd_read_count;
|
|
}
|
|
if (*och_usecount == 1) {
|
|
fd->fd_och = *och_p;
|
|
*och_p = NULL;
|
|
*och_usecount = 0;
|
|
rc = 0;
|
|
}
|
|
}
|
|
mutex_unlock(&lli->lli_och_mutex);
|
|
if (rc < 0) /* more than 1 opener */
|
|
return ERR_PTR(rc);
|
|
|
|
LASSERT(fd->fd_och != NULL);
|
|
old_handle = fd->fd_och->och_fh;
|
|
}
|
|
|
|
OBD_ALLOC_PTR(och);
|
|
if (och == NULL)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
op_data = ll_prep_md_op_data(NULL, inode, inode, NULL, 0, 0,
|
|
LUSTRE_OPC_ANY, NULL);
|
|
if (IS_ERR(op_data))
|
|
GOTO(out, rc = PTR_ERR(op_data));
|
|
|
|
/* To tell the MDT this openhandle is from the same owner */
|
|
op_data->op_handle = old_handle;
|
|
|
|
it.it_flags = fmode | open_flags;
|
|
it.it_flags |= MDS_OPEN_LOCK | MDS_OPEN_BY_FID | MDS_OPEN_LEASE;
|
|
rc = md_intent_lock(sbi->ll_md_exp, op_data, NULL, 0, &it, 0, &req,
|
|
ll_md_blocking_lease_ast,
|
|
/* LDLM_FL_NO_LRU: To not put the lease lock into LRU list, otherwise
|
|
* it can be cancelled which may mislead applications that the lease is
|
|
* broken;
|
|
* LDLM_FL_EXCL: Set this flag so that it won't be matched by normal
|
|
* open in ll_md_blocking_ast(). Otherwise as ll_md_blocking_lease_ast
|
|
* doesn't deal with openhandle, so normal openhandle will be leaked. */
|
|
LDLM_FL_NO_LRU | LDLM_FL_EXCL);
|
|
ll_finish_md_op_data(op_data);
|
|
ptlrpc_req_finished(req);
|
|
if (rc < 0)
|
|
GOTO(out_release_it, rc);
|
|
|
|
if (it_disposition(&it, DISP_LOOKUP_NEG))
|
|
GOTO(out_release_it, rc = -ENOENT);
|
|
|
|
rc = it_open_error(DISP_OPEN_OPEN, &it);
|
|
if (rc)
|
|
GOTO(out_release_it, rc);
|
|
|
|
LASSERT(it_disposition(&it, DISP_ENQ_OPEN_REF));
|
|
ll_och_fill(sbi->ll_md_exp, &it, och);
|
|
|
|
if (!it_disposition(&it, DISP_OPEN_LEASE)) /* old server? */
|
|
GOTO(out_close, rc = -EOPNOTSUPP);
|
|
|
|
/* already get lease, handle lease lock */
|
|
ll_set_lock_data(sbi->ll_md_exp, inode, &it, NULL);
|
|
if (it.d.lustre.it_lock_mode == 0 ||
|
|
it.d.lustre.it_lock_bits != MDS_INODELOCK_OPEN) {
|
|
/* open lock must return for lease */
|
|
CERROR(DFID "lease granted but no open lock, %d/%llu.\n",
|
|
PFID(ll_inode2fid(inode)), it.d.lustre.it_lock_mode,
|
|
it.d.lustre.it_lock_bits);
|
|
GOTO(out_close, rc = -EPROTO);
|
|
}
|
|
|
|
ll_intent_release(&it);
|
|
return och;
|
|
|
|
out_close:
|
|
rc2 = ll_close_inode_openhandle(sbi->ll_md_exp, inode, och, NULL);
|
|
if (rc2)
|
|
CERROR("Close openhandle returned %d\n", rc2);
|
|
|
|
/* cancel open lock */
|
|
if (it.d.lustre.it_lock_mode != 0) {
|
|
ldlm_lock_decref_and_cancel(&och->och_lease_handle,
|
|
it.d.lustre.it_lock_mode);
|
|
it.d.lustre.it_lock_mode = 0;
|
|
}
|
|
out_release_it:
|
|
ll_intent_release(&it);
|
|
out:
|
|
OBD_FREE_PTR(och);
|
|
return ERR_PTR(rc);
|
|
}
|
|
|
|
/**
|
|
* Release lease and close the file.
|
|
* It will check if the lease has ever broken.
|
|
*/
|
|
static int ll_lease_close(struct obd_client_handle *och, struct inode *inode,
|
|
bool *lease_broken)
|
|
{
|
|
struct ldlm_lock *lock;
|
|
bool cancelled = true;
|
|
int rc;
|
|
|
|
lock = ldlm_handle2lock(&och->och_lease_handle);
|
|
if (lock != NULL) {
|
|
lock_res_and_lock(lock);
|
|
cancelled = ldlm_is_cancel(lock);
|
|
unlock_res_and_lock(lock);
|
|
ldlm_lock_put(lock);
|
|
}
|
|
|
|
CDEBUG(D_INODE, "lease for "DFID" broken? %d\n",
|
|
PFID(&ll_i2info(inode)->lli_fid), cancelled);
|
|
|
|
if (!cancelled)
|
|
ldlm_cli_cancel(&och->och_lease_handle, 0);
|
|
if (lease_broken != NULL)
|
|
*lease_broken = cancelled;
|
|
|
|
rc = ll_close_inode_openhandle(ll_i2sbi(inode)->ll_md_exp, inode, och,
|
|
NULL);
|
|
return rc;
|
|
}
|
|
|
|
/* Fills the obdo with the attributes for the lsm */
|
|
static int ll_lsm_getattr(struct lov_stripe_md *lsm, struct obd_export *exp,
|
|
struct obd_capa *capa, struct obdo *obdo,
|
|
__u64 ioepoch, int sync)
|
|
{
|
|
struct ptlrpc_request_set *set;
|
|
struct obd_info oinfo = { { { 0 } } };
|
|
int rc;
|
|
|
|
LASSERT(lsm != NULL);
|
|
|
|
oinfo.oi_md = lsm;
|
|
oinfo.oi_oa = obdo;
|
|
oinfo.oi_oa->o_oi = lsm->lsm_oi;
|
|
oinfo.oi_oa->o_mode = S_IFREG;
|
|
oinfo.oi_oa->o_ioepoch = ioepoch;
|
|
oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE |
|
|
OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
|
|
OBD_MD_FLBLKSZ | OBD_MD_FLATIME |
|
|
OBD_MD_FLMTIME | OBD_MD_FLCTIME |
|
|
OBD_MD_FLGROUP | OBD_MD_FLEPOCH |
|
|
OBD_MD_FLDATAVERSION;
|
|
oinfo.oi_capa = capa;
|
|
if (sync) {
|
|
oinfo.oi_oa->o_valid |= OBD_MD_FLFLAGS;
|
|
oinfo.oi_oa->o_flags |= OBD_FL_SRVLOCK;
|
|
}
|
|
|
|
set = ptlrpc_prep_set();
|
|
if (set == NULL) {
|
|
CERROR("can't allocate ptlrpc set\n");
|
|
rc = -ENOMEM;
|
|
} else {
|
|
rc = obd_getattr_async(exp, &oinfo, set);
|
|
if (rc == 0)
|
|
rc = ptlrpc_set_wait(set);
|
|
ptlrpc_set_destroy(set);
|
|
}
|
|
if (rc == 0)
|
|
oinfo.oi_oa->o_valid &= (OBD_MD_FLBLOCKS | OBD_MD_FLBLKSZ |
|
|
OBD_MD_FLATIME | OBD_MD_FLMTIME |
|
|
OBD_MD_FLCTIME | OBD_MD_FLSIZE |
|
|
OBD_MD_FLDATAVERSION);
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* Performs the getattr on the inode and updates its fields.
|
|
* If @sync != 0, perform the getattr under the server-side lock.
|
|
*/
|
|
int ll_inode_getattr(struct inode *inode, struct obdo *obdo,
|
|
__u64 ioepoch, int sync)
|
|
{
|
|
struct obd_capa *capa = ll_mdscapa_get(inode);
|
|
struct lov_stripe_md *lsm;
|
|
int rc;
|
|
|
|
lsm = ccc_inode_lsm_get(inode);
|
|
rc = ll_lsm_getattr(lsm, ll_i2dtexp(inode),
|
|
capa, obdo, ioepoch, sync);
|
|
capa_put(capa);
|
|
if (rc == 0) {
|
|
struct ost_id *oi = lsm ? &lsm->lsm_oi : &obdo->o_oi;
|
|
|
|
obdo_refresh_inode(inode, obdo, obdo->o_valid);
|
|
CDEBUG(D_INODE, "objid "DOSTID" size %llu, blocks %llu,"
|
|
" blksize %lu\n", POSTID(oi), i_size_read(inode),
|
|
(unsigned long long)inode->i_blocks,
|
|
(unsigned long)ll_inode_blksize(inode));
|
|
}
|
|
ccc_inode_lsm_put(inode, lsm);
|
|
return rc;
|
|
}
|
|
|
|
int ll_merge_lvb(const struct lu_env *env, struct inode *inode)
|
|
{
|
|
struct ll_inode_info *lli = ll_i2info(inode);
|
|
struct cl_object *obj = lli->lli_clob;
|
|
struct cl_attr *attr = ccc_env_thread_attr(env);
|
|
struct ost_lvb lvb;
|
|
int rc = 0;
|
|
|
|
ll_inode_size_lock(inode);
|
|
/* merge timestamps the most recently obtained from mds with
|
|
timestamps obtained from osts */
|
|
LTIME_S(inode->i_atime) = lli->lli_lvb.lvb_atime;
|
|
LTIME_S(inode->i_mtime) = lli->lli_lvb.lvb_mtime;
|
|
LTIME_S(inode->i_ctime) = lli->lli_lvb.lvb_ctime;
|
|
inode_init_lvb(inode, &lvb);
|
|
|
|
cl_object_attr_lock(obj);
|
|
rc = cl_object_attr_get(env, obj, attr);
|
|
cl_object_attr_unlock(obj);
|
|
|
|
if (rc == 0) {
|
|
if (lvb.lvb_atime < attr->cat_atime)
|
|
lvb.lvb_atime = attr->cat_atime;
|
|
if (lvb.lvb_ctime < attr->cat_ctime)
|
|
lvb.lvb_ctime = attr->cat_ctime;
|
|
if (lvb.lvb_mtime < attr->cat_mtime)
|
|
lvb.lvb_mtime = attr->cat_mtime;
|
|
|
|
CDEBUG(D_VFSTRACE, DFID" updating i_size %llu\n",
|
|
PFID(&lli->lli_fid), attr->cat_size);
|
|
cl_isize_write_nolock(inode, attr->cat_size);
|
|
|
|
inode->i_blocks = attr->cat_blocks;
|
|
|
|
LTIME_S(inode->i_mtime) = lvb.lvb_mtime;
|
|
LTIME_S(inode->i_atime) = lvb.lvb_atime;
|
|
LTIME_S(inode->i_ctime) = lvb.lvb_ctime;
|
|
}
|
|
ll_inode_size_unlock(inode);
|
|
|
|
return rc;
|
|
}
|
|
|
|
int ll_glimpse_ioctl(struct ll_sb_info *sbi, struct lov_stripe_md *lsm,
|
|
lstat_t *st)
|
|
{
|
|
struct obdo obdo = { 0 };
|
|
int rc;
|
|
|
|
rc = ll_lsm_getattr(lsm, sbi->ll_dt_exp, NULL, &obdo, 0, 0);
|
|
if (rc == 0) {
|
|
st->st_size = obdo.o_size;
|
|
st->st_blocks = obdo.o_blocks;
|
|
st->st_mtime = obdo.o_mtime;
|
|
st->st_atime = obdo.o_atime;
|
|
st->st_ctime = obdo.o_ctime;
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
static bool file_is_noatime(const struct file *file)
|
|
{
|
|
const struct vfsmount *mnt = file->f_path.mnt;
|
|
const struct inode *inode = file->f_path.dentry->d_inode;
|
|
|
|
/* Adapted from file_accessed() and touch_atime().*/
|
|
if (file->f_flags & O_NOATIME)
|
|
return true;
|
|
|
|
if (inode->i_flags & S_NOATIME)
|
|
return true;
|
|
|
|
if (IS_NOATIME(inode))
|
|
return true;
|
|
|
|
if (mnt->mnt_flags & (MNT_NOATIME | MNT_READONLY))
|
|
return true;
|
|
|
|
if ((mnt->mnt_flags & MNT_NODIRATIME) && S_ISDIR(inode->i_mode))
|
|
return true;
|
|
|
|
if ((inode->i_sb->s_flags & MS_NODIRATIME) && S_ISDIR(inode->i_mode))
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
void ll_io_init(struct cl_io *io, const struct file *file, int write)
|
|
{
|
|
struct inode *inode = file->f_dentry->d_inode;
|
|
|
|
io->u.ci_rw.crw_nonblock = file->f_flags & O_NONBLOCK;
|
|
if (write) {
|
|
io->u.ci_wr.wr_append = !!(file->f_flags & O_APPEND);
|
|
io->u.ci_wr.wr_sync = file->f_flags & O_SYNC ||
|
|
file->f_flags & O_DIRECT ||
|
|
IS_SYNC(inode);
|
|
}
|
|
io->ci_obj = ll_i2info(inode)->lli_clob;
|
|
io->ci_lockreq = CILR_MAYBE;
|
|
if (ll_file_nolock(file)) {
|
|
io->ci_lockreq = CILR_NEVER;
|
|
io->ci_no_srvlock = 1;
|
|
} else if (file->f_flags & O_APPEND) {
|
|
io->ci_lockreq = CILR_MANDATORY;
|
|
}
|
|
|
|
io->ci_noatime = file_is_noatime(file);
|
|
}
|
|
|
|
static ssize_t
|
|
ll_file_io_generic(const struct lu_env *env, struct vvp_io_args *args,
|
|
struct file *file, enum cl_io_type iot,
|
|
loff_t *ppos, size_t count)
|
|
{
|
|
struct ll_inode_info *lli = ll_i2info(file->f_dentry->d_inode);
|
|
struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
|
|
struct cl_io *io;
|
|
ssize_t result;
|
|
|
|
restart:
|
|
io = ccc_env_thread_io(env);
|
|
ll_io_init(io, file, iot == CIT_WRITE);
|
|
|
|
if (cl_io_rw_init(env, io, iot, *ppos, count) == 0) {
|
|
struct vvp_io *vio = vvp_env_io(env);
|
|
struct ccc_io *cio = ccc_env_io(env);
|
|
int write_mutex_locked = 0;
|
|
|
|
cio->cui_fd = LUSTRE_FPRIVATE(file);
|
|
vio->cui_io_subtype = args->via_io_subtype;
|
|
|
|
switch (vio->cui_io_subtype) {
|
|
case IO_NORMAL:
|
|
cio->cui_iter = args->u.normal.via_iter;
|
|
cio->cui_iocb = args->u.normal.via_iocb;
|
|
if ((iot == CIT_WRITE) &&
|
|
!(cio->cui_fd->fd_flags & LL_FILE_GROUP_LOCKED)) {
|
|
if (mutex_lock_interruptible(&lli->
|
|
lli_write_mutex))
|
|
GOTO(out, result = -ERESTARTSYS);
|
|
write_mutex_locked = 1;
|
|
} else if (iot == CIT_READ) {
|
|
down_read(&lli->lli_trunc_sem);
|
|
}
|
|
break;
|
|
case IO_SPLICE:
|
|
vio->u.splice.cui_pipe = args->u.splice.via_pipe;
|
|
vio->u.splice.cui_flags = args->u.splice.via_flags;
|
|
break;
|
|
default:
|
|
CERROR("Unknown IO type - %u\n", vio->cui_io_subtype);
|
|
LBUG();
|
|
}
|
|
result = cl_io_loop(env, io);
|
|
if (write_mutex_locked)
|
|
mutex_unlock(&lli->lli_write_mutex);
|
|
else if (args->via_io_subtype == IO_NORMAL && iot == CIT_READ)
|
|
up_read(&lli->lli_trunc_sem);
|
|
} else {
|
|
/* cl_io_rw_init() handled IO */
|
|
result = io->ci_result;
|
|
}
|
|
|
|
if (io->ci_nob > 0) {
|
|
result = io->ci_nob;
|
|
*ppos = io->u.ci_wr.wr.crw_pos;
|
|
}
|
|
GOTO(out, result);
|
|
out:
|
|
cl_io_fini(env, io);
|
|
/* If any bit been read/written (result != 0), we just return
|
|
* short read/write instead of restart io. */
|
|
if ((result == 0 || result == -ENODATA) && io->ci_need_restart) {
|
|
CDEBUG(D_VFSTRACE, "Restart %s on %s from %lld, count:%zd\n",
|
|
iot == CIT_READ ? "read" : "write",
|
|
file->f_dentry->d_name.name, *ppos, count);
|
|
LASSERTF(io->ci_nob == 0, "%zd", io->ci_nob);
|
|
goto restart;
|
|
}
|
|
|
|
if (iot == CIT_READ) {
|
|
if (result >= 0)
|
|
ll_stats_ops_tally(ll_i2sbi(file->f_dentry->d_inode),
|
|
LPROC_LL_READ_BYTES, result);
|
|
} else if (iot == CIT_WRITE) {
|
|
if (result >= 0) {
|
|
ll_stats_ops_tally(ll_i2sbi(file->f_dentry->d_inode),
|
|
LPROC_LL_WRITE_BYTES, result);
|
|
fd->fd_write_failed = false;
|
|
} else if (result != -ERESTARTSYS) {
|
|
fd->fd_write_failed = true;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static ssize_t ll_file_read_iter(struct kiocb *iocb, struct iov_iter *to)
|
|
{
|
|
struct lu_env *env;
|
|
struct vvp_io_args *args;
|
|
ssize_t result;
|
|
int refcheck;
|
|
|
|
env = cl_env_get(&refcheck);
|
|
if (IS_ERR(env))
|
|
return PTR_ERR(env);
|
|
|
|
args = vvp_env_args(env, IO_NORMAL);
|
|
args->u.normal.via_iter = to;
|
|
args->u.normal.via_iocb = iocb;
|
|
|
|
result = ll_file_io_generic(env, args, iocb->ki_filp, CIT_READ,
|
|
&iocb->ki_pos, iov_iter_count(to));
|
|
cl_env_put(env, &refcheck);
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* Write to a file (through the page cache).
|
|
*/
|
|
static ssize_t ll_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
|
|
{
|
|
struct lu_env *env;
|
|
struct vvp_io_args *args;
|
|
ssize_t result;
|
|
int refcheck;
|
|
|
|
env = cl_env_get(&refcheck);
|
|
if (IS_ERR(env))
|
|
return PTR_ERR(env);
|
|
|
|
args = vvp_env_args(env, IO_NORMAL);
|
|
args->u.normal.via_iter = from;
|
|
args->u.normal.via_iocb = iocb;
|
|
|
|
result = ll_file_io_generic(env, args, iocb->ki_filp, CIT_WRITE,
|
|
&iocb->ki_pos, iov_iter_count(from));
|
|
cl_env_put(env, &refcheck);
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* Send file content (through pagecache) somewhere with helper
|
|
*/
|
|
static ssize_t ll_file_splice_read(struct file *in_file, loff_t *ppos,
|
|
struct pipe_inode_info *pipe, size_t count,
|
|
unsigned int flags)
|
|
{
|
|
struct lu_env *env;
|
|
struct vvp_io_args *args;
|
|
ssize_t result;
|
|
int refcheck;
|
|
|
|
env = cl_env_get(&refcheck);
|
|
if (IS_ERR(env))
|
|
return PTR_ERR(env);
|
|
|
|
args = vvp_env_args(env, IO_SPLICE);
|
|
args->u.splice.via_pipe = pipe;
|
|
args->u.splice.via_flags = flags;
|
|
|
|
result = ll_file_io_generic(env, args, in_file, CIT_READ, ppos, count);
|
|
cl_env_put(env, &refcheck);
|
|
return result;
|
|
}
|
|
|
|
static int ll_lov_recreate(struct inode *inode, struct ost_id *oi, u32 ost_idx)
|
|
{
|
|
struct obd_export *exp = ll_i2dtexp(inode);
|
|
struct obd_trans_info oti = { 0 };
|
|
struct obdo *oa = NULL;
|
|
int lsm_size;
|
|
int rc = 0;
|
|
struct lov_stripe_md *lsm = NULL, *lsm2;
|
|
|
|
OBDO_ALLOC(oa);
|
|
if (oa == NULL)
|
|
return -ENOMEM;
|
|
|
|
lsm = ccc_inode_lsm_get(inode);
|
|
if (!lsm_has_objects(lsm))
|
|
GOTO(out, rc = -ENOENT);
|
|
|
|
lsm_size = sizeof(*lsm) + (sizeof(struct lov_oinfo) *
|
|
(lsm->lsm_stripe_count));
|
|
|
|
OBD_ALLOC_LARGE(lsm2, lsm_size);
|
|
if (lsm2 == NULL)
|
|
GOTO(out, rc = -ENOMEM);
|
|
|
|
oa->o_oi = *oi;
|
|
oa->o_nlink = ost_idx;
|
|
oa->o_flags |= OBD_FL_RECREATE_OBJS;
|
|
oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS | OBD_MD_FLGROUP;
|
|
obdo_from_inode(oa, inode, OBD_MD_FLTYPE | OBD_MD_FLATIME |
|
|
OBD_MD_FLMTIME | OBD_MD_FLCTIME);
|
|
obdo_set_parent_fid(oa, &ll_i2info(inode)->lli_fid);
|
|
memcpy(lsm2, lsm, lsm_size);
|
|
ll_inode_size_lock(inode);
|
|
rc = obd_create(NULL, exp, oa, &lsm2, &oti);
|
|
ll_inode_size_unlock(inode);
|
|
|
|
OBD_FREE_LARGE(lsm2, lsm_size);
|
|
GOTO(out, rc);
|
|
out:
|
|
ccc_inode_lsm_put(inode, lsm);
|
|
OBDO_FREE(oa);
|
|
return rc;
|
|
}
|
|
|
|
static int ll_lov_recreate_obj(struct inode *inode, unsigned long arg)
|
|
{
|
|
struct ll_recreate_obj ucreat;
|
|
struct ost_id oi;
|
|
|
|
if (!capable(CFS_CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
|
|
if (copy_from_user(&ucreat, (struct ll_recreate_obj *)arg,
|
|
sizeof(ucreat)))
|
|
return -EFAULT;
|
|
|
|
ostid_set_seq_mdt0(&oi);
|
|
ostid_set_id(&oi, ucreat.lrc_id);
|
|
return ll_lov_recreate(inode, &oi, ucreat.lrc_ost_idx);
|
|
}
|
|
|
|
static int ll_lov_recreate_fid(struct inode *inode, unsigned long arg)
|
|
{
|
|
struct lu_fid fid;
|
|
struct ost_id oi;
|
|
u32 ost_idx;
|
|
|
|
if (!capable(CFS_CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
|
|
if (copy_from_user(&fid, (struct lu_fid *)arg, sizeof(fid)))
|
|
return -EFAULT;
|
|
|
|
fid_to_ostid(&fid, &oi);
|
|
ost_idx = (fid_seq(&fid) >> 16) & 0xffff;
|
|
return ll_lov_recreate(inode, &oi, ost_idx);
|
|
}
|
|
|
|
int ll_lov_setstripe_ea_info(struct inode *inode, struct file *file,
|
|
int flags, struct lov_user_md *lum, int lum_size)
|
|
{
|
|
struct lov_stripe_md *lsm = NULL;
|
|
struct lookup_intent oit = {.it_op = IT_OPEN, .it_flags = flags};
|
|
int rc = 0;
|
|
|
|
lsm = ccc_inode_lsm_get(inode);
|
|
if (lsm != NULL) {
|
|
ccc_inode_lsm_put(inode, lsm);
|
|
CDEBUG(D_IOCTL, "stripe already exists for ino %lu\n",
|
|
inode->i_ino);
|
|
GOTO(out, rc = -EEXIST);
|
|
}
|
|
|
|
ll_inode_size_lock(inode);
|
|
rc = ll_intent_file_open(file, lum, lum_size, &oit);
|
|
if (rc)
|
|
GOTO(out_unlock, rc);
|
|
rc = oit.d.lustre.it_status;
|
|
if (rc < 0)
|
|
GOTO(out_req_free, rc);
|
|
|
|
ll_release_openhandle(file->f_dentry, &oit);
|
|
|
|
out_unlock:
|
|
ll_inode_size_unlock(inode);
|
|
ll_intent_release(&oit);
|
|
ccc_inode_lsm_put(inode, lsm);
|
|
out:
|
|
cl_lov_delay_create_clear(&file->f_flags);
|
|
return rc;
|
|
out_req_free:
|
|
ptlrpc_req_finished((struct ptlrpc_request *) oit.d.lustre.it_data);
|
|
goto out;
|
|
}
|
|
|
|
int ll_lov_getstripe_ea_info(struct inode *inode, const char *filename,
|
|
struct lov_mds_md **lmmp, int *lmm_size,
|
|
struct ptlrpc_request **request)
|
|
{
|
|
struct ll_sb_info *sbi = ll_i2sbi(inode);
|
|
struct mdt_body *body;
|
|
struct lov_mds_md *lmm = NULL;
|
|
struct ptlrpc_request *req = NULL;
|
|
struct md_op_data *op_data;
|
|
int rc, lmmsize;
|
|
|
|
rc = ll_get_default_mdsize(sbi, &lmmsize);
|
|
if (rc)
|
|
return rc;
|
|
|
|
op_data = ll_prep_md_op_data(NULL, inode, NULL, filename,
|
|
strlen(filename), lmmsize,
|
|
LUSTRE_OPC_ANY, NULL);
|
|
if (IS_ERR(op_data))
|
|
return PTR_ERR(op_data);
|
|
|
|
op_data->op_valid = OBD_MD_FLEASIZE | OBD_MD_FLDIREA;
|
|
rc = md_getattr_name(sbi->ll_md_exp, op_data, &req);
|
|
ll_finish_md_op_data(op_data);
|
|
if (rc < 0) {
|
|
CDEBUG(D_INFO, "md_getattr_name failed "
|
|
"on %s: rc %d\n", filename, rc);
|
|
GOTO(out, rc);
|
|
}
|
|
|
|
body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
|
|
LASSERT(body != NULL); /* checked by mdc_getattr_name */
|
|
|
|
lmmsize = body->eadatasize;
|
|
|
|
if (!(body->valid & (OBD_MD_FLEASIZE | OBD_MD_FLDIREA)) ||
|
|
lmmsize == 0) {
|
|
GOTO(out, rc = -ENODATA);
|
|
}
|
|
|
|
lmm = req_capsule_server_sized_get(&req->rq_pill, &RMF_MDT_MD, lmmsize);
|
|
LASSERT(lmm != NULL);
|
|
|
|
if ((lmm->lmm_magic != cpu_to_le32(LOV_MAGIC_V1)) &&
|
|
(lmm->lmm_magic != cpu_to_le32(LOV_MAGIC_V3))) {
|
|
GOTO(out, rc = -EPROTO);
|
|
}
|
|
|
|
/*
|
|
* This is coming from the MDS, so is probably in
|
|
* little endian. We convert it to host endian before
|
|
* passing it to userspace.
|
|
*/
|
|
if (LOV_MAGIC != cpu_to_le32(LOV_MAGIC)) {
|
|
int stripe_count;
|
|
|
|
stripe_count = le16_to_cpu(lmm->lmm_stripe_count);
|
|
if (le32_to_cpu(lmm->lmm_pattern) & LOV_PATTERN_F_RELEASED)
|
|
stripe_count = 0;
|
|
|
|
/* if function called for directory - we should
|
|
* avoid swab not existent lsm objects */
|
|
if (lmm->lmm_magic == cpu_to_le32(LOV_MAGIC_V1)) {
|
|
lustre_swab_lov_user_md_v1((struct lov_user_md_v1 *)lmm);
|
|
if (S_ISREG(body->mode))
|
|
lustre_swab_lov_user_md_objects(
|
|
((struct lov_user_md_v1 *)lmm)->lmm_objects,
|
|
stripe_count);
|
|
} else if (lmm->lmm_magic == cpu_to_le32(LOV_MAGIC_V3)) {
|
|
lustre_swab_lov_user_md_v3((struct lov_user_md_v3 *)lmm);
|
|
if (S_ISREG(body->mode))
|
|
lustre_swab_lov_user_md_objects(
|
|
((struct lov_user_md_v3 *)lmm)->lmm_objects,
|
|
stripe_count);
|
|
}
|
|
}
|
|
|
|
out:
|
|
*lmmp = lmm;
|
|
*lmm_size = lmmsize;
|
|
*request = req;
|
|
return rc;
|
|
}
|
|
|
|
static int ll_lov_setea(struct inode *inode, struct file *file,
|
|
unsigned long arg)
|
|
{
|
|
int flags = MDS_OPEN_HAS_OBJS | FMODE_WRITE;
|
|
struct lov_user_md *lump;
|
|
int lum_size = sizeof(struct lov_user_md) +
|
|
sizeof(struct lov_user_ost_data);
|
|
int rc;
|
|
|
|
if (!capable(CFS_CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
|
|
OBD_ALLOC_LARGE(lump, lum_size);
|
|
if (lump == NULL)
|
|
return -ENOMEM;
|
|
|
|
if (copy_from_user(lump, (struct lov_user_md *)arg, lum_size)) {
|
|
OBD_FREE_LARGE(lump, lum_size);
|
|
return -EFAULT;
|
|
}
|
|
|
|
rc = ll_lov_setstripe_ea_info(inode, file, flags, lump, lum_size);
|
|
|
|
OBD_FREE_LARGE(lump, lum_size);
|
|
return rc;
|
|
}
|
|
|
|
static int ll_lov_setstripe(struct inode *inode, struct file *file,
|
|
unsigned long arg)
|
|
{
|
|
struct lov_user_md_v3 lumv3;
|
|
struct lov_user_md_v1 *lumv1 = (struct lov_user_md_v1 *)&lumv3;
|
|
struct lov_user_md_v1 *lumv1p = (struct lov_user_md_v1 *)arg;
|
|
struct lov_user_md_v3 *lumv3p = (struct lov_user_md_v3 *)arg;
|
|
int lum_size, rc;
|
|
int flags = FMODE_WRITE;
|
|
|
|
/* first try with v1 which is smaller than v3 */
|
|
lum_size = sizeof(struct lov_user_md_v1);
|
|
if (copy_from_user(lumv1, lumv1p, lum_size))
|
|
return -EFAULT;
|
|
|
|
if (lumv1->lmm_magic == LOV_USER_MAGIC_V3) {
|
|
lum_size = sizeof(struct lov_user_md_v3);
|
|
if (copy_from_user(&lumv3, lumv3p, lum_size))
|
|
return -EFAULT;
|
|
}
|
|
|
|
rc = ll_lov_setstripe_ea_info(inode, file, flags, lumv1, lum_size);
|
|
if (rc == 0) {
|
|
struct lov_stripe_md *lsm;
|
|
__u32 gen;
|
|
|
|
put_user(0, &lumv1p->lmm_stripe_count);
|
|
|
|
ll_layout_refresh(inode, &gen);
|
|
lsm = ccc_inode_lsm_get(inode);
|
|
rc = obd_iocontrol(LL_IOC_LOV_GETSTRIPE, ll_i2dtexp(inode),
|
|
0, lsm, (void *)arg);
|
|
ccc_inode_lsm_put(inode, lsm);
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
static int ll_lov_getstripe(struct inode *inode, unsigned long arg)
|
|
{
|
|
struct lov_stripe_md *lsm;
|
|
int rc = -ENODATA;
|
|
|
|
lsm = ccc_inode_lsm_get(inode);
|
|
if (lsm != NULL)
|
|
rc = obd_iocontrol(LL_IOC_LOV_GETSTRIPE, ll_i2dtexp(inode), 0,
|
|
lsm, (void *)arg);
|
|
ccc_inode_lsm_put(inode, lsm);
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
ll_get_grouplock(struct inode *inode, struct file *file, unsigned long arg)
|
|
{
|
|
struct ll_inode_info *lli = ll_i2info(inode);
|
|
struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
|
|
struct ccc_grouplock grouplock;
|
|
int rc;
|
|
|
|
if (ll_file_nolock(file))
|
|
return -EOPNOTSUPP;
|
|
|
|
spin_lock(&lli->lli_lock);
|
|
if (fd->fd_flags & LL_FILE_GROUP_LOCKED) {
|
|
CWARN("group lock already existed with gid %lu\n",
|
|
fd->fd_grouplock.cg_gid);
|
|
spin_unlock(&lli->lli_lock);
|
|
return -EINVAL;
|
|
}
|
|
LASSERT(fd->fd_grouplock.cg_lock == NULL);
|
|
spin_unlock(&lli->lli_lock);
|
|
|
|
rc = cl_get_grouplock(cl_i2info(inode)->lli_clob,
|
|
arg, (file->f_flags & O_NONBLOCK), &grouplock);
|
|
if (rc)
|
|
return rc;
|
|
|
|
spin_lock(&lli->lli_lock);
|
|
if (fd->fd_flags & LL_FILE_GROUP_LOCKED) {
|
|
spin_unlock(&lli->lli_lock);
|
|
CERROR("another thread just won the race\n");
|
|
cl_put_grouplock(&grouplock);
|
|
return -EINVAL;
|
|
}
|
|
|
|
fd->fd_flags |= LL_FILE_GROUP_LOCKED;
|
|
fd->fd_grouplock = grouplock;
|
|
spin_unlock(&lli->lli_lock);
|
|
|
|
CDEBUG(D_INFO, "group lock %lu obtained\n", arg);
|
|
return 0;
|
|
}
|
|
|
|
int ll_put_grouplock(struct inode *inode, struct file *file, unsigned long arg)
|
|
{
|
|
struct ll_inode_info *lli = ll_i2info(inode);
|
|
struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
|
|
struct ccc_grouplock grouplock;
|
|
|
|
spin_lock(&lli->lli_lock);
|
|
if (!(fd->fd_flags & LL_FILE_GROUP_LOCKED)) {
|
|
spin_unlock(&lli->lli_lock);
|
|
CWARN("no group lock held\n");
|
|
return -EINVAL;
|
|
}
|
|
LASSERT(fd->fd_grouplock.cg_lock != NULL);
|
|
|
|
if (fd->fd_grouplock.cg_gid != arg) {
|
|
CWARN("group lock %lu doesn't match current id %lu\n",
|
|
arg, fd->fd_grouplock.cg_gid);
|
|
spin_unlock(&lli->lli_lock);
|
|
return -EINVAL;
|
|
}
|
|
|
|
grouplock = fd->fd_grouplock;
|
|
memset(&fd->fd_grouplock, 0, sizeof(fd->fd_grouplock));
|
|
fd->fd_flags &= ~LL_FILE_GROUP_LOCKED;
|
|
spin_unlock(&lli->lli_lock);
|
|
|
|
cl_put_grouplock(&grouplock);
|
|
CDEBUG(D_INFO, "group lock %lu released\n", arg);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Close inode open handle
|
|
*
|
|
* \param dentry [in] dentry which contains the inode
|
|
* \param it [in,out] intent which contains open info and result
|
|
*
|
|
* \retval 0 success
|
|
* \retval <0 failure
|
|
*/
|
|
int ll_release_openhandle(struct dentry *dentry, struct lookup_intent *it)
|
|
{
|
|
struct inode *inode = dentry->d_inode;
|
|
struct obd_client_handle *och;
|
|
int rc;
|
|
|
|
LASSERT(inode);
|
|
|
|
/* Root ? Do nothing. */
|
|
if (dentry->d_inode->i_sb->s_root == dentry)
|
|
return 0;
|
|
|
|
/* No open handle to close? Move away */
|
|
if (!it_disposition(it, DISP_OPEN_OPEN))
|
|
return 0;
|
|
|
|
LASSERT(it_open_error(DISP_OPEN_OPEN, it) == 0);
|
|
|
|
OBD_ALLOC(och, sizeof(*och));
|
|
if (!och)
|
|
GOTO(out, rc = -ENOMEM);
|
|
|
|
ll_och_fill(ll_i2sbi(inode)->ll_md_exp, it, och);
|
|
|
|
rc = ll_close_inode_openhandle(ll_i2sbi(inode)->ll_md_exp,
|
|
inode, och, NULL);
|
|
out:
|
|
/* this one is in place of ll_file_open */
|
|
if (it_disposition(it, DISP_ENQ_OPEN_REF)) {
|
|
ptlrpc_req_finished(it->d.lustre.it_data);
|
|
it_clear_disposition(it, DISP_ENQ_OPEN_REF);
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* Get size for inode for which FIEMAP mapping is requested.
|
|
* Make the FIEMAP get_info call and returns the result.
|
|
*/
|
|
static int ll_do_fiemap(struct inode *inode, struct ll_user_fiemap *fiemap,
|
|
size_t num_bytes)
|
|
{
|
|
struct obd_export *exp = ll_i2dtexp(inode);
|
|
struct lov_stripe_md *lsm = NULL;
|
|
struct ll_fiemap_info_key fm_key = { .name = KEY_FIEMAP, };
|
|
__u32 vallen = num_bytes;
|
|
int rc;
|
|
|
|
/* Checks for fiemap flags */
|
|
if (fiemap->fm_flags & ~LUSTRE_FIEMAP_FLAGS_COMPAT) {
|
|
fiemap->fm_flags &= ~LUSTRE_FIEMAP_FLAGS_COMPAT;
|
|
return -EBADR;
|
|
}
|
|
|
|
/* Check for FIEMAP_FLAG_SYNC */
|
|
if (fiemap->fm_flags & FIEMAP_FLAG_SYNC) {
|
|
rc = filemap_fdatawrite(inode->i_mapping);
|
|
if (rc)
|
|
return rc;
|
|
}
|
|
|
|
lsm = ccc_inode_lsm_get(inode);
|
|
if (lsm == NULL)
|
|
return -ENOENT;
|
|
|
|
/* If the stripe_count > 1 and the application does not understand
|
|
* DEVICE_ORDER flag, then it cannot interpret the extents correctly.
|
|
*/
|
|
if (lsm->lsm_stripe_count > 1 &&
|
|
!(fiemap->fm_flags & FIEMAP_FLAG_DEVICE_ORDER))
|
|
GOTO(out, rc = -EOPNOTSUPP);
|
|
|
|
fm_key.oa.o_oi = lsm->lsm_oi;
|
|
fm_key.oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
|
|
|
|
obdo_from_inode(&fm_key.oa, inode, OBD_MD_FLSIZE);
|
|
obdo_set_parent_fid(&fm_key.oa, &ll_i2info(inode)->lli_fid);
|
|
/* If filesize is 0, then there would be no objects for mapping */
|
|
if (fm_key.oa.o_size == 0) {
|
|
fiemap->fm_mapped_extents = 0;
|
|
GOTO(out, rc = 0);
|
|
}
|
|
|
|
memcpy(&fm_key.fiemap, fiemap, sizeof(*fiemap));
|
|
|
|
rc = obd_get_info(NULL, exp, sizeof(fm_key), &fm_key, &vallen,
|
|
fiemap, lsm);
|
|
if (rc)
|
|
CERROR("obd_get_info failed: rc = %d\n", rc);
|
|
|
|
out:
|
|
ccc_inode_lsm_put(inode, lsm);
|
|
return rc;
|
|
}
|
|
|
|
int ll_fid2path(struct inode *inode, void __user *arg)
|
|
{
|
|
struct obd_export *exp = ll_i2mdexp(inode);
|
|
const struct getinfo_fid2path __user *gfin = arg;
|
|
struct getinfo_fid2path *gfout;
|
|
u32 pathlen;
|
|
size_t outsize;
|
|
int rc;
|
|
|
|
if (!capable(CFS_CAP_DAC_READ_SEARCH) &&
|
|
!(ll_i2sbi(inode)->ll_flags & LL_SBI_USER_FID2PATH))
|
|
return -EPERM;
|
|
|
|
/* Only need to get the buflen */
|
|
if (get_user(pathlen, &gfin->gf_pathlen))
|
|
return -EFAULT;
|
|
|
|
if (pathlen > PATH_MAX)
|
|
return -EINVAL;
|
|
|
|
outsize = sizeof(*gfout) + pathlen;
|
|
|
|
OBD_ALLOC(gfout, outsize);
|
|
if (gfout == NULL)
|
|
return -ENOMEM;
|
|
|
|
if (copy_from_user(gfout, arg, sizeof(*gfout)))
|
|
GOTO(gf_free, rc = -EFAULT);
|
|
|
|
/* Call mdc_iocontrol */
|
|
rc = obd_iocontrol(OBD_IOC_FID2PATH, exp, outsize, gfout, NULL);
|
|
if (rc != 0)
|
|
GOTO(gf_free, rc);
|
|
|
|
if (copy_to_user(arg, gfout, outsize))
|
|
rc = -EFAULT;
|
|
|
|
gf_free:
|
|
OBD_FREE(gfout, outsize);
|
|
return rc;
|
|
}
|
|
|
|
static int ll_ioctl_fiemap(struct inode *inode, unsigned long arg)
|
|
{
|
|
struct ll_user_fiemap *fiemap_s;
|
|
size_t num_bytes, ret_bytes;
|
|
unsigned int extent_count;
|
|
int rc = 0;
|
|
|
|
/* Get the extent count so we can calculate the size of
|
|
* required fiemap buffer */
|
|
if (get_user(extent_count,
|
|
&((struct ll_user_fiemap __user *)arg)->fm_extent_count))
|
|
return -EFAULT;
|
|
|
|
if (extent_count >=
|
|
(SIZE_MAX - sizeof(*fiemap_s)) / sizeof(struct ll_fiemap_extent))
|
|
return -EINVAL;
|
|
num_bytes = sizeof(*fiemap_s) + (extent_count *
|
|
sizeof(struct ll_fiemap_extent));
|
|
|
|
OBD_ALLOC_LARGE(fiemap_s, num_bytes);
|
|
if (fiemap_s == NULL)
|
|
return -ENOMEM;
|
|
|
|
/* get the fiemap value */
|
|
if (copy_from_user(fiemap_s, (struct ll_user_fiemap __user *)arg,
|
|
sizeof(*fiemap_s)))
|
|
GOTO(error, rc = -EFAULT);
|
|
|
|
/* If fm_extent_count is non-zero, read the first extent since
|
|
* it is used to calculate end_offset and device from previous
|
|
* fiemap call. */
|
|
if (extent_count) {
|
|
if (copy_from_user(&fiemap_s->fm_extents[0],
|
|
(char __user *)arg + sizeof(*fiemap_s),
|
|
sizeof(struct ll_fiemap_extent)))
|
|
GOTO(error, rc = -EFAULT);
|
|
}
|
|
|
|
rc = ll_do_fiemap(inode, fiemap_s, num_bytes);
|
|
if (rc)
|
|
GOTO(error, rc);
|
|
|
|
ret_bytes = sizeof(struct ll_user_fiemap);
|
|
|
|
if (extent_count != 0)
|
|
ret_bytes += (fiemap_s->fm_mapped_extents *
|
|
sizeof(struct ll_fiemap_extent));
|
|
|
|
if (copy_to_user((void *)arg, fiemap_s, ret_bytes))
|
|
rc = -EFAULT;
|
|
|
|
error:
|
|
OBD_FREE_LARGE(fiemap_s, num_bytes);
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* Read the data_version for inode.
|
|
*
|
|
* This value is computed using stripe object version on OST.
|
|
* Version is computed using server side locking.
|
|
*
|
|
* @param extent_lock Take extent lock. Not needed if a process is already
|
|
* holding the OST object group locks.
|
|
*/
|
|
int ll_data_version(struct inode *inode, __u64 *data_version,
|
|
int extent_lock)
|
|
{
|
|
struct lov_stripe_md *lsm = NULL;
|
|
struct ll_sb_info *sbi = ll_i2sbi(inode);
|
|
struct obdo *obdo = NULL;
|
|
int rc;
|
|
|
|
/* If no stripe, we consider version is 0. */
|
|
lsm = ccc_inode_lsm_get(inode);
|
|
if (!lsm_has_objects(lsm)) {
|
|
*data_version = 0;
|
|
CDEBUG(D_INODE, "No object for inode\n");
|
|
GOTO(out, rc = 0);
|
|
}
|
|
|
|
OBD_ALLOC_PTR(obdo);
|
|
if (obdo == NULL)
|
|
GOTO(out, rc = -ENOMEM);
|
|
|
|
rc = ll_lsm_getattr(lsm, sbi->ll_dt_exp, NULL, obdo, 0, extent_lock);
|
|
if (rc == 0) {
|
|
if (!(obdo->o_valid & OBD_MD_FLDATAVERSION))
|
|
rc = -EOPNOTSUPP;
|
|
else
|
|
*data_version = obdo->o_data_version;
|
|
}
|
|
|
|
OBD_FREE_PTR(obdo);
|
|
out:
|
|
ccc_inode_lsm_put(inode, lsm);
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* Trigger a HSM release request for the provided inode.
|
|
*/
|
|
int ll_hsm_release(struct inode *inode)
|
|
{
|
|
struct cl_env_nest nest;
|
|
struct lu_env *env;
|
|
struct obd_client_handle *och = NULL;
|
|
__u64 data_version = 0;
|
|
int rc;
|
|
|
|
|
|
CDEBUG(D_INODE, "%s: Releasing file "DFID".\n",
|
|
ll_get_fsname(inode->i_sb, NULL, 0),
|
|
PFID(&ll_i2info(inode)->lli_fid));
|
|
|
|
och = ll_lease_open(inode, NULL, FMODE_WRITE, MDS_OPEN_RELEASE);
|
|
if (IS_ERR(och))
|
|
GOTO(out, rc = PTR_ERR(och));
|
|
|
|
/* Grab latest data_version and [am]time values */
|
|
rc = ll_data_version(inode, &data_version, 1);
|
|
if (rc != 0)
|
|
GOTO(out, rc);
|
|
|
|
env = cl_env_nested_get(&nest);
|
|
if (IS_ERR(env))
|
|
GOTO(out, rc = PTR_ERR(env));
|
|
|
|
ll_merge_lvb(env, inode);
|
|
cl_env_nested_put(&nest, env);
|
|
|
|
/* Release the file.
|
|
* NB: lease lock handle is released in mdc_hsm_release_pack() because
|
|
* we still need it to pack l_remote_handle to MDT. */
|
|
rc = ll_close_inode_openhandle(ll_i2sbi(inode)->ll_md_exp, inode, och,
|
|
&data_version);
|
|
och = NULL;
|
|
|
|
|
|
out:
|
|
if (och != NULL && !IS_ERR(och)) /* close the file */
|
|
ll_lease_close(och, inode, NULL);
|
|
|
|
return rc;
|
|
}
|
|
|
|
struct ll_swap_stack {
|
|
struct iattr ia1, ia2;
|
|
__u64 dv1, dv2;
|
|
struct inode *inode1, *inode2;
|
|
bool check_dv1, check_dv2;
|
|
};
|
|
|
|
static int ll_swap_layouts(struct file *file1, struct file *file2,
|
|
struct lustre_swap_layouts *lsl)
|
|
{
|
|
struct mdc_swap_layouts msl;
|
|
struct md_op_data *op_data;
|
|
__u32 gid;
|
|
__u64 dv;
|
|
struct ll_swap_stack *llss = NULL;
|
|
int rc;
|
|
|
|
OBD_ALLOC_PTR(llss);
|
|
if (llss == NULL)
|
|
return -ENOMEM;
|
|
|
|
llss->inode1 = file1->f_dentry->d_inode;
|
|
llss->inode2 = file2->f_dentry->d_inode;
|
|
|
|
if (!S_ISREG(llss->inode2->i_mode))
|
|
GOTO(free, rc = -EINVAL);
|
|
|
|
if (inode_permission(llss->inode1, MAY_WRITE) ||
|
|
inode_permission(llss->inode2, MAY_WRITE))
|
|
GOTO(free, rc = -EPERM);
|
|
|
|
if (llss->inode2->i_sb != llss->inode1->i_sb)
|
|
GOTO(free, rc = -EXDEV);
|
|
|
|
/* we use 2 bool because it is easier to swap than 2 bits */
|
|
if (lsl->sl_flags & SWAP_LAYOUTS_CHECK_DV1)
|
|
llss->check_dv1 = true;
|
|
|
|
if (lsl->sl_flags & SWAP_LAYOUTS_CHECK_DV2)
|
|
llss->check_dv2 = true;
|
|
|
|
/* we cannot use lsl->sl_dvX directly because we may swap them */
|
|
llss->dv1 = lsl->sl_dv1;
|
|
llss->dv2 = lsl->sl_dv2;
|
|
|
|
rc = lu_fid_cmp(ll_inode2fid(llss->inode1), ll_inode2fid(llss->inode2));
|
|
if (rc == 0) /* same file, done! */
|
|
GOTO(free, rc = 0);
|
|
|
|
if (rc < 0) { /* sequentialize it */
|
|
swap(llss->inode1, llss->inode2);
|
|
swap(file1, file2);
|
|
swap(llss->dv1, llss->dv2);
|
|
swap(llss->check_dv1, llss->check_dv2);
|
|
}
|
|
|
|
gid = lsl->sl_gid;
|
|
if (gid != 0) { /* application asks to flush dirty cache */
|
|
rc = ll_get_grouplock(llss->inode1, file1, gid);
|
|
if (rc < 0)
|
|
GOTO(free, rc);
|
|
|
|
rc = ll_get_grouplock(llss->inode2, file2, gid);
|
|
if (rc < 0) {
|
|
ll_put_grouplock(llss->inode1, file1, gid);
|
|
GOTO(free, rc);
|
|
}
|
|
}
|
|
|
|
/* to be able to restore mtime and atime after swap
|
|
* we need to first save them */
|
|
if (lsl->sl_flags &
|
|
(SWAP_LAYOUTS_KEEP_MTIME | SWAP_LAYOUTS_KEEP_ATIME)) {
|
|
llss->ia1.ia_mtime = llss->inode1->i_mtime;
|
|
llss->ia1.ia_atime = llss->inode1->i_atime;
|
|
llss->ia1.ia_valid = ATTR_MTIME | ATTR_ATIME;
|
|
llss->ia2.ia_mtime = llss->inode2->i_mtime;
|
|
llss->ia2.ia_atime = llss->inode2->i_atime;
|
|
llss->ia2.ia_valid = ATTR_MTIME | ATTR_ATIME;
|
|
}
|
|
|
|
/* ultimate check, before swapping the layouts we check if
|
|
* dataversion has changed (if requested) */
|
|
if (llss->check_dv1) {
|
|
rc = ll_data_version(llss->inode1, &dv, 0);
|
|
if (rc)
|
|
GOTO(putgl, rc);
|
|
if (dv != llss->dv1)
|
|
GOTO(putgl, rc = -EAGAIN);
|
|
}
|
|
|
|
if (llss->check_dv2) {
|
|
rc = ll_data_version(llss->inode2, &dv, 0);
|
|
if (rc)
|
|
GOTO(putgl, rc);
|
|
if (dv != llss->dv2)
|
|
GOTO(putgl, rc = -EAGAIN);
|
|
}
|
|
|
|
/* struct md_op_data is used to send the swap args to the mdt
|
|
* only flags is missing, so we use struct mdc_swap_layouts
|
|
* through the md_op_data->op_data */
|
|
/* flags from user space have to be converted before they are send to
|
|
* server, no flag is sent today, they are only used on the client */
|
|
msl.msl_flags = 0;
|
|
rc = -ENOMEM;
|
|
op_data = ll_prep_md_op_data(NULL, llss->inode1, llss->inode2, NULL, 0,
|
|
0, LUSTRE_OPC_ANY, &msl);
|
|
if (IS_ERR(op_data))
|
|
GOTO(free, rc = PTR_ERR(op_data));
|
|
|
|
rc = obd_iocontrol(LL_IOC_LOV_SWAP_LAYOUTS, ll_i2mdexp(llss->inode1),
|
|
sizeof(*op_data), op_data, NULL);
|
|
ll_finish_md_op_data(op_data);
|
|
|
|
putgl:
|
|
if (gid != 0) {
|
|
ll_put_grouplock(llss->inode2, file2, gid);
|
|
ll_put_grouplock(llss->inode1, file1, gid);
|
|
}
|
|
|
|
/* rc can be set from obd_iocontrol() or from a GOTO(putgl, ...) */
|
|
if (rc != 0)
|
|
GOTO(free, rc);
|
|
|
|
/* clear useless flags */
|
|
if (!(lsl->sl_flags & SWAP_LAYOUTS_KEEP_MTIME)) {
|
|
llss->ia1.ia_valid &= ~ATTR_MTIME;
|
|
llss->ia2.ia_valid &= ~ATTR_MTIME;
|
|
}
|
|
|
|
if (!(lsl->sl_flags & SWAP_LAYOUTS_KEEP_ATIME)) {
|
|
llss->ia1.ia_valid &= ~ATTR_ATIME;
|
|
llss->ia2.ia_valid &= ~ATTR_ATIME;
|
|
}
|
|
|
|
/* update time if requested */
|
|
rc = 0;
|
|
if (llss->ia2.ia_valid != 0) {
|
|
mutex_lock(&llss->inode1->i_mutex);
|
|
rc = ll_setattr(file1->f_dentry, &llss->ia2);
|
|
mutex_unlock(&llss->inode1->i_mutex);
|
|
}
|
|
|
|
if (llss->ia1.ia_valid != 0) {
|
|
int rc1;
|
|
|
|
mutex_lock(&llss->inode2->i_mutex);
|
|
rc1 = ll_setattr(file2->f_dentry, &llss->ia1);
|
|
mutex_unlock(&llss->inode2->i_mutex);
|
|
if (rc == 0)
|
|
rc = rc1;
|
|
}
|
|
|
|
free:
|
|
if (llss != NULL)
|
|
OBD_FREE_PTR(llss);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int ll_hsm_state_set(struct inode *inode, struct hsm_state_set *hss)
|
|
{
|
|
struct md_op_data *op_data;
|
|
int rc;
|
|
|
|
/* Non-root users are forbidden to set or clear flags which are
|
|
* NOT defined in HSM_USER_MASK. */
|
|
if (((hss->hss_setmask | hss->hss_clearmask) & ~HSM_USER_MASK) &&
|
|
!capable(CFS_CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
|
|
op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
|
|
LUSTRE_OPC_ANY, hss);
|
|
if (IS_ERR(op_data))
|
|
return PTR_ERR(op_data);
|
|
|
|
rc = obd_iocontrol(LL_IOC_HSM_STATE_SET, ll_i2mdexp(inode),
|
|
sizeof(*op_data), op_data, NULL);
|
|
|
|
ll_finish_md_op_data(op_data);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int ll_hsm_import(struct inode *inode, struct file *file,
|
|
struct hsm_user_import *hui)
|
|
{
|
|
struct hsm_state_set *hss = NULL;
|
|
struct iattr *attr = NULL;
|
|
int rc;
|
|
|
|
|
|
if (!S_ISREG(inode->i_mode))
|
|
return -EINVAL;
|
|
|
|
/* set HSM flags */
|
|
OBD_ALLOC_PTR(hss);
|
|
if (hss == NULL)
|
|
GOTO(out, rc = -ENOMEM);
|
|
|
|
hss->hss_valid = HSS_SETMASK | HSS_ARCHIVE_ID;
|
|
hss->hss_archive_id = hui->hui_archive_id;
|
|
hss->hss_setmask = HS_ARCHIVED | HS_EXISTS | HS_RELEASED;
|
|
rc = ll_hsm_state_set(inode, hss);
|
|
if (rc != 0)
|
|
GOTO(out, rc);
|
|
|
|
OBD_ALLOC_PTR(attr);
|
|
if (attr == NULL)
|
|
GOTO(out, rc = -ENOMEM);
|
|
|
|
attr->ia_mode = hui->hui_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
|
|
attr->ia_mode |= S_IFREG;
|
|
attr->ia_uid = make_kuid(&init_user_ns, hui->hui_uid);
|
|
attr->ia_gid = make_kgid(&init_user_ns, hui->hui_gid);
|
|
attr->ia_size = hui->hui_size;
|
|
attr->ia_mtime.tv_sec = hui->hui_mtime;
|
|
attr->ia_mtime.tv_nsec = hui->hui_mtime_ns;
|
|
attr->ia_atime.tv_sec = hui->hui_atime;
|
|
attr->ia_atime.tv_nsec = hui->hui_atime_ns;
|
|
|
|
attr->ia_valid = ATTR_SIZE | ATTR_MODE | ATTR_FORCE |
|
|
ATTR_UID | ATTR_GID |
|
|
ATTR_MTIME | ATTR_MTIME_SET |
|
|
ATTR_ATIME | ATTR_ATIME_SET;
|
|
|
|
mutex_lock(&inode->i_mutex);
|
|
|
|
rc = ll_setattr_raw(file->f_dentry, attr, true);
|
|
if (rc == -ENODATA)
|
|
rc = 0;
|
|
|
|
mutex_unlock(&inode->i_mutex);
|
|
|
|
out:
|
|
if (hss != NULL)
|
|
OBD_FREE_PTR(hss);
|
|
|
|
if (attr != NULL)
|
|
OBD_FREE_PTR(attr);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static long
|
|
ll_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
|
|
{
|
|
struct inode *inode = file->f_dentry->d_inode;
|
|
struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
|
|
int flags, rc;
|
|
|
|
CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p),cmd=%x\n", inode->i_ino,
|
|
inode->i_generation, inode, cmd);
|
|
ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_IOCTL, 1);
|
|
|
|
/* asm-ppc{,64} declares TCGETS, et. al. as type 't' not 'T' */
|
|
if (_IOC_TYPE(cmd) == 'T' || _IOC_TYPE(cmd) == 't') /* tty ioctls */
|
|
return -ENOTTY;
|
|
|
|
switch(cmd) {
|
|
case LL_IOC_GETFLAGS:
|
|
/* Get the current value of the file flags */
|
|
return put_user(fd->fd_flags, (int *)arg);
|
|
case LL_IOC_SETFLAGS:
|
|
case LL_IOC_CLRFLAGS:
|
|
/* Set or clear specific file flags */
|
|
/* XXX This probably needs checks to ensure the flags are
|
|
* not abused, and to handle any flag side effects.
|
|
*/
|
|
if (get_user(flags, (int *) arg))
|
|
return -EFAULT;
|
|
|
|
if (cmd == LL_IOC_SETFLAGS) {
|
|
if ((flags & LL_FILE_IGNORE_LOCK) &&
|
|
!(file->f_flags & O_DIRECT)) {
|
|
CERROR("%s: unable to disable locking on "
|
|
"non-O_DIRECT file\n", current->comm);
|
|
return -EINVAL;
|
|
}
|
|
|
|
fd->fd_flags |= flags;
|
|
} else {
|
|
fd->fd_flags &= ~flags;
|
|
}
|
|
return 0;
|
|
case LL_IOC_LOV_SETSTRIPE:
|
|
return ll_lov_setstripe(inode, file, arg);
|
|
case LL_IOC_LOV_SETEA:
|
|
return ll_lov_setea(inode, file, arg);
|
|
case LL_IOC_LOV_SWAP_LAYOUTS: {
|
|
struct file *file2;
|
|
struct lustre_swap_layouts lsl;
|
|
|
|
if (copy_from_user(&lsl, (char *)arg,
|
|
sizeof(struct lustre_swap_layouts)))
|
|
return -EFAULT;
|
|
|
|
if ((file->f_flags & O_ACCMODE) == 0) /* O_RDONLY */
|
|
return -EPERM;
|
|
|
|
file2 = fget(lsl.sl_fd);
|
|
if (file2 == NULL)
|
|
return -EBADF;
|
|
|
|
rc = -EPERM;
|
|
if ((file2->f_flags & O_ACCMODE) != 0) /* O_WRONLY or O_RDWR */
|
|
rc = ll_swap_layouts(file, file2, &lsl);
|
|
fput(file2);
|
|
return rc;
|
|
}
|
|
case LL_IOC_LOV_GETSTRIPE:
|
|
return ll_lov_getstripe(inode, arg);
|
|
case LL_IOC_RECREATE_OBJ:
|
|
return ll_lov_recreate_obj(inode, arg);
|
|
case LL_IOC_RECREATE_FID:
|
|
return ll_lov_recreate_fid(inode, arg);
|
|
case FSFILT_IOC_FIEMAP:
|
|
return ll_ioctl_fiemap(inode, arg);
|
|
case FSFILT_IOC_GETFLAGS:
|
|
case FSFILT_IOC_SETFLAGS:
|
|
return ll_iocontrol(inode, file, cmd, arg);
|
|
case FSFILT_IOC_GETVERSION_OLD:
|
|
case FSFILT_IOC_GETVERSION:
|
|
return put_user(inode->i_generation, (int *)arg);
|
|
case LL_IOC_GROUP_LOCK:
|
|
return ll_get_grouplock(inode, file, arg);
|
|
case LL_IOC_GROUP_UNLOCK:
|
|
return ll_put_grouplock(inode, file, arg);
|
|
case IOC_OBD_STATFS:
|
|
return ll_obd_statfs(inode, (void *)arg);
|
|
|
|
/* We need to special case any other ioctls we want to handle,
|
|
* to send them to the MDS/OST as appropriate and to properly
|
|
* network encode the arg field.
|
|
case FSFILT_IOC_SETVERSION_OLD:
|
|
case FSFILT_IOC_SETVERSION:
|
|
*/
|
|
case LL_IOC_FLUSHCTX:
|
|
return ll_flush_ctx(inode);
|
|
case LL_IOC_PATH2FID: {
|
|
if (copy_to_user((void *)arg, ll_inode2fid(inode),
|
|
sizeof(struct lu_fid)))
|
|
return -EFAULT;
|
|
|
|
return 0;
|
|
}
|
|
case OBD_IOC_FID2PATH:
|
|
return ll_fid2path(inode, (void *)arg);
|
|
case LL_IOC_DATA_VERSION: {
|
|
struct ioc_data_version idv;
|
|
int rc;
|
|
|
|
if (copy_from_user(&idv, (char *)arg, sizeof(idv)))
|
|
return -EFAULT;
|
|
|
|
rc = ll_data_version(inode, &idv.idv_version,
|
|
!(idv.idv_flags & LL_DV_NOFLUSH));
|
|
|
|
if (rc == 0 && copy_to_user((char *) arg, &idv, sizeof(idv)))
|
|
return -EFAULT;
|
|
|
|
return rc;
|
|
}
|
|
|
|
case LL_IOC_GET_MDTIDX: {
|
|
int mdtidx;
|
|
|
|
mdtidx = ll_get_mdt_idx(inode);
|
|
if (mdtidx < 0)
|
|
return mdtidx;
|
|
|
|
if (put_user((int)mdtidx, (int*)arg))
|
|
return -EFAULT;
|
|
|
|
return 0;
|
|
}
|
|
case OBD_IOC_GETDTNAME:
|
|
case OBD_IOC_GETMDNAME:
|
|
return ll_get_obd_name(inode, cmd, arg);
|
|
case LL_IOC_HSM_STATE_GET: {
|
|
struct md_op_data *op_data;
|
|
struct hsm_user_state *hus;
|
|
int rc;
|
|
|
|
OBD_ALLOC_PTR(hus);
|
|
if (hus == NULL)
|
|
return -ENOMEM;
|
|
|
|
op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
|
|
LUSTRE_OPC_ANY, hus);
|
|
if (IS_ERR(op_data)) {
|
|
OBD_FREE_PTR(hus);
|
|
return PTR_ERR(op_data);
|
|
}
|
|
|
|
rc = obd_iocontrol(cmd, ll_i2mdexp(inode), sizeof(*op_data),
|
|
op_data, NULL);
|
|
|
|
if (copy_to_user((void *)arg, hus, sizeof(*hus)))
|
|
rc = -EFAULT;
|
|
|
|
ll_finish_md_op_data(op_data);
|
|
OBD_FREE_PTR(hus);
|
|
return rc;
|
|
}
|
|
case LL_IOC_HSM_STATE_SET: {
|
|
struct hsm_state_set *hss;
|
|
int rc;
|
|
|
|
OBD_ALLOC_PTR(hss);
|
|
if (hss == NULL)
|
|
return -ENOMEM;
|
|
|
|
if (copy_from_user(hss, (char *)arg, sizeof(*hss))) {
|
|
OBD_FREE_PTR(hss);
|
|
return -EFAULT;
|
|
}
|
|
|
|
rc = ll_hsm_state_set(inode, hss);
|
|
|
|
OBD_FREE_PTR(hss);
|
|
return rc;
|
|
}
|
|
case LL_IOC_HSM_ACTION: {
|
|
struct md_op_data *op_data;
|
|
struct hsm_current_action *hca;
|
|
int rc;
|
|
|
|
OBD_ALLOC_PTR(hca);
|
|
if (hca == NULL)
|
|
return -ENOMEM;
|
|
|
|
op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
|
|
LUSTRE_OPC_ANY, hca);
|
|
if (IS_ERR(op_data)) {
|
|
OBD_FREE_PTR(hca);
|
|
return PTR_ERR(op_data);
|
|
}
|
|
|
|
rc = obd_iocontrol(cmd, ll_i2mdexp(inode), sizeof(*op_data),
|
|
op_data, NULL);
|
|
|
|
if (copy_to_user((char *)arg, hca, sizeof(*hca)))
|
|
rc = -EFAULT;
|
|
|
|
ll_finish_md_op_data(op_data);
|
|
OBD_FREE_PTR(hca);
|
|
return rc;
|
|
}
|
|
case LL_IOC_SET_LEASE: {
|
|
struct ll_inode_info *lli = ll_i2info(inode);
|
|
struct obd_client_handle *och = NULL;
|
|
bool lease_broken;
|
|
fmode_t mode = 0;
|
|
|
|
switch (arg) {
|
|
case F_WRLCK:
|
|
if (!(file->f_mode & FMODE_WRITE))
|
|
return -EPERM;
|
|
mode = FMODE_WRITE;
|
|
break;
|
|
case F_RDLCK:
|
|
if (!(file->f_mode & FMODE_READ))
|
|
return -EPERM;
|
|
mode = FMODE_READ;
|
|
break;
|
|
case F_UNLCK:
|
|
mutex_lock(&lli->lli_och_mutex);
|
|
if (fd->fd_lease_och != NULL) {
|
|
och = fd->fd_lease_och;
|
|
fd->fd_lease_och = NULL;
|
|
}
|
|
mutex_unlock(&lli->lli_och_mutex);
|
|
|
|
if (och != NULL) {
|
|
mode = och->och_flags &
|
|
(FMODE_READ|FMODE_WRITE);
|
|
rc = ll_lease_close(och, inode, &lease_broken);
|
|
if (rc == 0 && lease_broken)
|
|
mode = 0;
|
|
} else {
|
|
rc = -ENOLCK;
|
|
}
|
|
|
|
/* return the type of lease or error */
|
|
return rc < 0 ? rc : (int)mode;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
CDEBUG(D_INODE, "Set lease with mode %d\n", mode);
|
|
|
|
/* apply for lease */
|
|
och = ll_lease_open(inode, file, mode, 0);
|
|
if (IS_ERR(och))
|
|
return PTR_ERR(och);
|
|
|
|
rc = 0;
|
|
mutex_lock(&lli->lli_och_mutex);
|
|
if (fd->fd_lease_och == NULL) {
|
|
fd->fd_lease_och = och;
|
|
och = NULL;
|
|
}
|
|
mutex_unlock(&lli->lli_och_mutex);
|
|
if (och != NULL) {
|
|
/* impossible now that only excl is supported for now */
|
|
ll_lease_close(och, inode, &lease_broken);
|
|
rc = -EBUSY;
|
|
}
|
|
return rc;
|
|
}
|
|
case LL_IOC_GET_LEASE: {
|
|
struct ll_inode_info *lli = ll_i2info(inode);
|
|
struct ldlm_lock *lock = NULL;
|
|
|
|
rc = 0;
|
|
mutex_lock(&lli->lli_och_mutex);
|
|
if (fd->fd_lease_och != NULL) {
|
|
struct obd_client_handle *och = fd->fd_lease_och;
|
|
|
|
lock = ldlm_handle2lock(&och->och_lease_handle);
|
|
if (lock != NULL) {
|
|
lock_res_and_lock(lock);
|
|
if (!ldlm_is_cancel(lock))
|
|
rc = och->och_flags &
|
|
(FMODE_READ | FMODE_WRITE);
|
|
unlock_res_and_lock(lock);
|
|
ldlm_lock_put(lock);
|
|
}
|
|
}
|
|
mutex_unlock(&lli->lli_och_mutex);
|
|
return rc;
|
|
}
|
|
case LL_IOC_HSM_IMPORT: {
|
|
struct hsm_user_import *hui;
|
|
|
|
OBD_ALLOC_PTR(hui);
|
|
if (hui == NULL)
|
|
return -ENOMEM;
|
|
|
|
if (copy_from_user(hui, (void *)arg, sizeof(*hui))) {
|
|
OBD_FREE_PTR(hui);
|
|
return -EFAULT;
|
|
}
|
|
|
|
rc = ll_hsm_import(inode, file, hui);
|
|
|
|
OBD_FREE_PTR(hui);
|
|
return rc;
|
|
}
|
|
default: {
|
|
int err;
|
|
|
|
if (LLIOC_STOP ==
|
|
ll_iocontrol_call(inode, file, cmd, arg, &err))
|
|
return err;
|
|
|
|
return obd_iocontrol(cmd, ll_i2dtexp(inode), 0, NULL,
|
|
(void *)arg);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
static loff_t ll_file_seek(struct file *file, loff_t offset, int origin)
|
|
{
|
|
struct inode *inode = file->f_dentry->d_inode;
|
|
loff_t retval, eof = 0;
|
|
|
|
retval = offset + ((origin == SEEK_END) ? i_size_read(inode) :
|
|
(origin == SEEK_CUR) ? file->f_pos : 0);
|
|
CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p), to=%llu=%#llx(%d)\n",
|
|
inode->i_ino, inode->i_generation, inode, retval, retval,
|
|
origin);
|
|
ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_LLSEEK, 1);
|
|
|
|
if (origin == SEEK_END || origin == SEEK_HOLE || origin == SEEK_DATA) {
|
|
retval = ll_glimpse_size(inode);
|
|
if (retval != 0)
|
|
return retval;
|
|
eof = i_size_read(inode);
|
|
}
|
|
|
|
retval = generic_file_llseek_size(file, offset, origin,
|
|
ll_file_maxbytes(inode), eof);
|
|
return retval;
|
|
}
|
|
|
|
static int ll_flush(struct file *file, fl_owner_t id)
|
|
{
|
|
struct inode *inode = file->f_dentry->d_inode;
|
|
struct ll_inode_info *lli = ll_i2info(inode);
|
|
struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
|
|
int rc, err;
|
|
|
|
LASSERT(!S_ISDIR(inode->i_mode));
|
|
|
|
/* catch async errors that were recorded back when async writeback
|
|
* failed for pages in this mapping. */
|
|
rc = lli->lli_async_rc;
|
|
lli->lli_async_rc = 0;
|
|
err = lov_read_and_clear_async_rc(lli->lli_clob);
|
|
if (rc == 0)
|
|
rc = err;
|
|
|
|
/* The application has been told write failure already.
|
|
* Do not report failure again. */
|
|
if (fd->fd_write_failed)
|
|
return 0;
|
|
return rc ? -EIO : 0;
|
|
}
|
|
|
|
/**
|
|
* Called to make sure a portion of file has been written out.
|
|
* if @mode is not CL_FSYNC_LOCAL, it will send OST_SYNC RPCs to OST.
|
|
*
|
|
* Return how many pages have been written.
|
|
*/
|
|
int cl_sync_file_range(struct inode *inode, loff_t start, loff_t end,
|
|
enum cl_fsync_mode mode, int ignore_layout)
|
|
{
|
|
struct cl_env_nest nest;
|
|
struct lu_env *env;
|
|
struct cl_io *io;
|
|
struct obd_capa *capa = NULL;
|
|
struct cl_fsync_io *fio;
|
|
int result;
|
|
|
|
if (mode != CL_FSYNC_NONE && mode != CL_FSYNC_LOCAL &&
|
|
mode != CL_FSYNC_DISCARD && mode != CL_FSYNC_ALL)
|
|
return -EINVAL;
|
|
|
|
env = cl_env_nested_get(&nest);
|
|
if (IS_ERR(env))
|
|
return PTR_ERR(env);
|
|
|
|
capa = ll_osscapa_get(inode, CAPA_OPC_OSS_WRITE);
|
|
|
|
io = ccc_env_thread_io(env);
|
|
io->ci_obj = cl_i2info(inode)->lli_clob;
|
|
io->ci_ignore_layout = ignore_layout;
|
|
|
|
/* initialize parameters for sync */
|
|
fio = &io->u.ci_fsync;
|
|
fio->fi_capa = capa;
|
|
fio->fi_start = start;
|
|
fio->fi_end = end;
|
|
fio->fi_fid = ll_inode2fid(inode);
|
|
fio->fi_mode = mode;
|
|
fio->fi_nr_written = 0;
|
|
|
|
if (cl_io_init(env, io, CIT_FSYNC, io->ci_obj) == 0)
|
|
result = cl_io_loop(env, io);
|
|
else
|
|
result = io->ci_result;
|
|
if (result == 0)
|
|
result = fio->fi_nr_written;
|
|
cl_io_fini(env, io);
|
|
cl_env_nested_put(&nest, env);
|
|
|
|
capa_put(capa);
|
|
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* When dentry is provided (the 'else' case), *file->f_dentry may be
|
|
* null and dentry must be used directly rather than pulled from
|
|
* *file->f_dentry as is done otherwise.
|
|
*/
|
|
|
|
int ll_fsync(struct file *file, loff_t start, loff_t end, int datasync)
|
|
{
|
|
struct dentry *dentry = file->f_dentry;
|
|
struct inode *inode = dentry->d_inode;
|
|
struct ll_inode_info *lli = ll_i2info(inode);
|
|
struct ptlrpc_request *req;
|
|
struct obd_capa *oc;
|
|
int rc, err;
|
|
|
|
CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
|
|
inode->i_generation, inode);
|
|
ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_FSYNC, 1);
|
|
|
|
rc = filemap_write_and_wait_range(inode->i_mapping, start, end);
|
|
mutex_lock(&inode->i_mutex);
|
|
|
|
/* catch async errors that were recorded back when async writeback
|
|
* failed for pages in this mapping. */
|
|
if (!S_ISDIR(inode->i_mode)) {
|
|
err = lli->lli_async_rc;
|
|
lli->lli_async_rc = 0;
|
|
if (rc == 0)
|
|
rc = err;
|
|
err = lov_read_and_clear_async_rc(lli->lli_clob);
|
|
if (rc == 0)
|
|
rc = err;
|
|
}
|
|
|
|
oc = ll_mdscapa_get(inode);
|
|
err = md_sync(ll_i2sbi(inode)->ll_md_exp, ll_inode2fid(inode), oc,
|
|
&req);
|
|
capa_put(oc);
|
|
if (!rc)
|
|
rc = err;
|
|
if (!err)
|
|
ptlrpc_req_finished(req);
|
|
|
|
if (S_ISREG(inode->i_mode)) {
|
|
struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
|
|
|
|
err = cl_sync_file_range(inode, start, end, CL_FSYNC_ALL, 0);
|
|
if (rc == 0 && err < 0)
|
|
rc = err;
|
|
if (rc < 0)
|
|
fd->fd_write_failed = true;
|
|
else
|
|
fd->fd_write_failed = false;
|
|
}
|
|
|
|
mutex_unlock(&inode->i_mutex);
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
ll_file_flock(struct file *file, int cmd, struct file_lock *file_lock)
|
|
{
|
|
struct inode *inode = file->f_dentry->d_inode;
|
|
struct ll_sb_info *sbi = ll_i2sbi(inode);
|
|
struct ldlm_enqueue_info einfo = {
|
|
.ei_type = LDLM_FLOCK,
|
|
.ei_cb_cp = ldlm_flock_completion_ast,
|
|
.ei_cbdata = file_lock,
|
|
};
|
|
struct md_op_data *op_data;
|
|
struct lustre_handle lockh = {0};
|
|
ldlm_policy_data_t flock = {{0}};
|
|
__u64 flags = 0;
|
|
int rc;
|
|
int rc2 = 0;
|
|
|
|
CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu file_lock=%p\n",
|
|
inode->i_ino, file_lock);
|
|
|
|
ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_FLOCK, 1);
|
|
|
|
if (file_lock->fl_flags & FL_FLOCK)
|
|
LASSERT((cmd == F_SETLKW) || (cmd == F_SETLK));
|
|
else if (!(file_lock->fl_flags & FL_POSIX))
|
|
return -EINVAL;
|
|
|
|
flock.l_flock.owner = (unsigned long)file_lock->fl_owner;
|
|
flock.l_flock.pid = file_lock->fl_pid;
|
|
flock.l_flock.start = file_lock->fl_start;
|
|
flock.l_flock.end = file_lock->fl_end;
|
|
|
|
/* Somewhat ugly workaround for svc lockd.
|
|
* lockd installs custom fl_lmops->lm_compare_owner that checks
|
|
* for the fl_owner to be the same (which it always is on local node
|
|
* I guess between lockd processes) and then compares pid.
|
|
* As such we assign pid to the owner field to make it all work,
|
|
* conflict with normal locks is unlikely since pid space and
|
|
* pointer space for current->files are not intersecting */
|
|
if (file_lock->fl_lmops && file_lock->fl_lmops->lm_compare_owner)
|
|
flock.l_flock.owner = (unsigned long)file_lock->fl_pid;
|
|
|
|
switch (file_lock->fl_type) {
|
|
case F_RDLCK:
|
|
einfo.ei_mode = LCK_PR;
|
|
break;
|
|
case F_UNLCK:
|
|
/* An unlock request may or may not have any relation to
|
|
* existing locks so we may not be able to pass a lock handle
|
|
* via a normal ldlm_lock_cancel() request. The request may even
|
|
* unlock a byte range in the middle of an existing lock. In
|
|
* order to process an unlock request we need all of the same
|
|
* information that is given with a normal read or write record
|
|
* lock request. To avoid creating another ldlm unlock (cancel)
|
|
* message we'll treat a LCK_NL flock request as an unlock. */
|
|
einfo.ei_mode = LCK_NL;
|
|
break;
|
|
case F_WRLCK:
|
|
einfo.ei_mode = LCK_PW;
|
|
break;
|
|
default:
|
|
CDEBUG(D_INFO, "Unknown fcntl lock type: %d\n",
|
|
file_lock->fl_type);
|
|
return -ENOTSUPP;
|
|
}
|
|
|
|
switch (cmd) {
|
|
case F_SETLKW:
|
|
#ifdef F_SETLKW64
|
|
case F_SETLKW64:
|
|
#endif
|
|
flags = 0;
|
|
break;
|
|
case F_SETLK:
|
|
#ifdef F_SETLK64
|
|
case F_SETLK64:
|
|
#endif
|
|
flags = LDLM_FL_BLOCK_NOWAIT;
|
|
break;
|
|
case F_GETLK:
|
|
#ifdef F_GETLK64
|
|
case F_GETLK64:
|
|
#endif
|
|
flags = LDLM_FL_TEST_LOCK;
|
|
/* Save the old mode so that if the mode in the lock changes we
|
|
* can decrement the appropriate reader or writer refcount. */
|
|
file_lock->fl_type = einfo.ei_mode;
|
|
break;
|
|
default:
|
|
CERROR("unknown fcntl lock command: %d\n", cmd);
|
|
return -EINVAL;
|
|
}
|
|
|
|
op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
|
|
LUSTRE_OPC_ANY, NULL);
|
|
if (IS_ERR(op_data))
|
|
return PTR_ERR(op_data);
|
|
|
|
CDEBUG(D_DLMTRACE, "inode=%lu, pid=%u, flags=%#llx, mode=%u, start=%llu, end=%llu\n",
|
|
inode->i_ino, flock.l_flock.pid, flags, einfo.ei_mode,
|
|
flock.l_flock.start, flock.l_flock.end);
|
|
|
|
rc = md_enqueue(sbi->ll_md_exp, &einfo, NULL,
|
|
op_data, &lockh, &flock, 0, NULL /* req */, flags);
|
|
|
|
if ((file_lock->fl_flags & FL_FLOCK) &&
|
|
(rc == 0 || file_lock->fl_type == F_UNLCK))
|
|
rc2 = flock_lock_file_wait(file, file_lock);
|
|
if ((file_lock->fl_flags & FL_POSIX) &&
|
|
(rc == 0 || file_lock->fl_type == F_UNLCK) &&
|
|
!(flags & LDLM_FL_TEST_LOCK))
|
|
rc2 = posix_lock_file_wait(file, file_lock);
|
|
|
|
if (rc2 && file_lock->fl_type != F_UNLCK) {
|
|
einfo.ei_mode = LCK_NL;
|
|
md_enqueue(sbi->ll_md_exp, &einfo, NULL,
|
|
op_data, &lockh, &flock, 0, NULL /* req */, flags);
|
|
rc = rc2;
|
|
}
|
|
|
|
ll_finish_md_op_data(op_data);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
ll_file_noflock(struct file *file, int cmd, struct file_lock *file_lock)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
/**
|
|
* test if some locks matching bits and l_req_mode are acquired
|
|
* - bits can be in different locks
|
|
* - if found clear the common lock bits in *bits
|
|
* - the bits not found, are kept in *bits
|
|
* \param inode [IN]
|
|
* \param bits [IN] searched lock bits [IN]
|
|
* \param l_req_mode [IN] searched lock mode
|
|
* \retval boolean, true iff all bits are found
|
|
*/
|
|
int ll_have_md_lock(struct inode *inode, __u64 *bits, ldlm_mode_t l_req_mode)
|
|
{
|
|
struct lustre_handle lockh;
|
|
ldlm_policy_data_t policy;
|
|
ldlm_mode_t mode = (l_req_mode == LCK_MINMODE) ?
|
|
(LCK_CR|LCK_CW|LCK_PR|LCK_PW) : l_req_mode;
|
|
struct lu_fid *fid;
|
|
__u64 flags;
|
|
int i;
|
|
|
|
if (!inode)
|
|
return 0;
|
|
|
|
fid = &ll_i2info(inode)->lli_fid;
|
|
CDEBUG(D_INFO, "trying to match res "DFID" mode %s\n", PFID(fid),
|
|
ldlm_lockname[mode]);
|
|
|
|
flags = LDLM_FL_BLOCK_GRANTED | LDLM_FL_CBPENDING | LDLM_FL_TEST_LOCK;
|
|
for (i = 0; i <= MDS_INODELOCK_MAXSHIFT && *bits != 0; i++) {
|
|
policy.l_inodebits.bits = *bits & (1 << i);
|
|
if (policy.l_inodebits.bits == 0)
|
|
continue;
|
|
|
|
if (md_lock_match(ll_i2mdexp(inode), flags, fid, LDLM_IBITS,
|
|
&policy, mode, &lockh)) {
|
|
struct ldlm_lock *lock;
|
|
|
|
lock = ldlm_handle2lock(&lockh);
|
|
if (lock) {
|
|
*bits &=
|
|
~(lock->l_policy_data.l_inodebits.bits);
|
|
LDLM_LOCK_PUT(lock);
|
|
} else {
|
|
*bits &= ~policy.l_inodebits.bits;
|
|
}
|
|
}
|
|
}
|
|
return *bits == 0;
|
|
}
|
|
|
|
ldlm_mode_t ll_take_md_lock(struct inode *inode, __u64 bits,
|
|
struct lustre_handle *lockh, __u64 flags,
|
|
ldlm_mode_t mode)
|
|
{
|
|
ldlm_policy_data_t policy = { .l_inodebits = {bits}};
|
|
struct lu_fid *fid;
|
|
ldlm_mode_t rc;
|
|
|
|
fid = &ll_i2info(inode)->lli_fid;
|
|
CDEBUG(D_INFO, "trying to match res "DFID"\n", PFID(fid));
|
|
|
|
rc = md_lock_match(ll_i2mdexp(inode), LDLM_FL_BLOCK_GRANTED|flags,
|
|
fid, LDLM_IBITS, &policy, mode, lockh);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int ll_inode_revalidate_fini(struct inode *inode, int rc)
|
|
{
|
|
/* Already unlinked. Just update nlink and return success */
|
|
if (rc == -ENOENT) {
|
|
clear_nlink(inode);
|
|
/* This path cannot be hit for regular files unless in
|
|
* case of obscure races, so no need to validate size.
|
|
*/
|
|
if (!S_ISREG(inode->i_mode) && !S_ISDIR(inode->i_mode))
|
|
return 0;
|
|
} else if (rc != 0) {
|
|
CDEBUG_LIMIT((rc == -EACCES || rc == -EIDRM) ? D_INFO : D_ERROR,
|
|
"%s: revalidate FID "DFID" error: rc = %d\n",
|
|
ll_get_fsname(inode->i_sb, NULL, 0),
|
|
PFID(ll_inode2fid(inode)), rc);
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int __ll_inode_revalidate(struct dentry *dentry, __u64 ibits)
|
|
{
|
|
struct inode *inode = dentry->d_inode;
|
|
struct ptlrpc_request *req = NULL;
|
|
struct obd_export *exp;
|
|
int rc = 0;
|
|
|
|
LASSERT(inode != NULL);
|
|
|
|
CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p),name=%s\n",
|
|
inode->i_ino, inode->i_generation, inode, dentry->d_name.name);
|
|
|
|
exp = ll_i2mdexp(inode);
|
|
|
|
/* XXX: Enable OBD_CONNECT_ATTRFID to reduce unnecessary getattr RPC.
|
|
* But under CMD case, it caused some lock issues, should be fixed
|
|
* with new CMD ibits lock. See bug 12718 */
|
|
if (exp_connect_flags(exp) & OBD_CONNECT_ATTRFID) {
|
|
struct lookup_intent oit = { .it_op = IT_GETATTR };
|
|
struct md_op_data *op_data;
|
|
|
|
if (ibits == MDS_INODELOCK_LOOKUP)
|
|
oit.it_op = IT_LOOKUP;
|
|
|
|
/* Call getattr by fid, so do not provide name at all. */
|
|
op_data = ll_prep_md_op_data(NULL, dentry->d_inode,
|
|
dentry->d_inode, NULL, 0, 0,
|
|
LUSTRE_OPC_ANY, NULL);
|
|
if (IS_ERR(op_data))
|
|
return PTR_ERR(op_data);
|
|
|
|
oit.it_create_mode |= M_CHECK_STALE;
|
|
rc = md_intent_lock(exp, op_data, NULL, 0,
|
|
/* we are not interested in name
|
|
based lookup */
|
|
&oit, 0, &req,
|
|
ll_md_blocking_ast, 0);
|
|
ll_finish_md_op_data(op_data);
|
|
oit.it_create_mode &= ~M_CHECK_STALE;
|
|
if (rc < 0) {
|
|
rc = ll_inode_revalidate_fini(inode, rc);
|
|
GOTO (out, rc);
|
|
}
|
|
|
|
rc = ll_revalidate_it_finish(req, &oit, dentry);
|
|
if (rc != 0) {
|
|
ll_intent_release(&oit);
|
|
GOTO(out, rc);
|
|
}
|
|
|
|
/* Unlinked? Unhash dentry, so it is not picked up later by
|
|
do_lookup() -> ll_revalidate_it(). We cannot use d_drop
|
|
here to preserve get_cwd functionality on 2.6.
|
|
Bug 10503 */
|
|
if (!dentry->d_inode->i_nlink)
|
|
d_lustre_invalidate(dentry, 0);
|
|
|
|
ll_lookup_finish_locks(&oit, dentry);
|
|
} else if (!ll_have_md_lock(dentry->d_inode, &ibits, LCK_MINMODE)) {
|
|
struct ll_sb_info *sbi = ll_i2sbi(dentry->d_inode);
|
|
u64 valid = OBD_MD_FLGETATTR;
|
|
struct md_op_data *op_data;
|
|
int ealen = 0;
|
|
|
|
if (S_ISREG(inode->i_mode)) {
|
|
rc = ll_get_default_mdsize(sbi, &ealen);
|
|
if (rc)
|
|
return rc;
|
|
valid |= OBD_MD_FLEASIZE | OBD_MD_FLMODEASIZE;
|
|
}
|
|
|
|
op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
|
|
0, ealen, LUSTRE_OPC_ANY,
|
|
NULL);
|
|
if (IS_ERR(op_data))
|
|
return PTR_ERR(op_data);
|
|
|
|
op_data->op_valid = valid;
|
|
/* Once OBD_CONNECT_ATTRFID is not supported, we can't find one
|
|
* capa for this inode. Because we only keep capas of dirs
|
|
* fresh. */
|
|
rc = md_getattr(sbi->ll_md_exp, op_data, &req);
|
|
ll_finish_md_op_data(op_data);
|
|
if (rc) {
|
|
rc = ll_inode_revalidate_fini(inode, rc);
|
|
return rc;
|
|
}
|
|
|
|
rc = ll_prep_inode(&inode, req, NULL, NULL);
|
|
}
|
|
out:
|
|
ptlrpc_req_finished(req);
|
|
return rc;
|
|
}
|
|
|
|
static int ll_inode_revalidate(struct dentry *dentry, __u64 ibits)
|
|
{
|
|
struct inode *inode = dentry->d_inode;
|
|
int rc;
|
|
|
|
rc = __ll_inode_revalidate(dentry, ibits);
|
|
if (rc != 0)
|
|
return rc;
|
|
|
|
/* if object isn't regular file, don't validate size */
|
|
if (!S_ISREG(inode->i_mode)) {
|
|
LTIME_S(inode->i_atime) = ll_i2info(inode)->lli_lvb.lvb_atime;
|
|
LTIME_S(inode->i_mtime) = ll_i2info(inode)->lli_lvb.lvb_mtime;
|
|
LTIME_S(inode->i_ctime) = ll_i2info(inode)->lli_lvb.lvb_ctime;
|
|
} else {
|
|
/* In case of restore, the MDT has the right size and has
|
|
* already send it back without granting the layout lock,
|
|
* inode is up-to-date so glimpse is useless.
|
|
* Also to glimpse we need the layout, in case of a running
|
|
* restore the MDT holds the layout lock so the glimpse will
|
|
* block up to the end of restore (getattr will block)
|
|
*/
|
|
if (!(ll_i2info(inode)->lli_flags & LLIF_FILE_RESTORING))
|
|
rc = ll_glimpse_size(inode);
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
int ll_getattr(struct vfsmount *mnt, struct dentry *de, struct kstat *stat)
|
|
{
|
|
struct inode *inode = de->d_inode;
|
|
struct ll_sb_info *sbi = ll_i2sbi(inode);
|
|
struct ll_inode_info *lli = ll_i2info(inode);
|
|
int res = 0;
|
|
|
|
res = ll_inode_revalidate(de, MDS_INODELOCK_UPDATE |
|
|
MDS_INODELOCK_LOOKUP);
|
|
ll_stats_ops_tally(sbi, LPROC_LL_GETATTR, 1);
|
|
|
|
if (res)
|
|
return res;
|
|
|
|
stat->dev = inode->i_sb->s_dev;
|
|
if (ll_need_32bit_api(sbi))
|
|
stat->ino = cl_fid_build_ino(&lli->lli_fid, 1);
|
|
else
|
|
stat->ino = inode->i_ino;
|
|
stat->mode = inode->i_mode;
|
|
stat->nlink = inode->i_nlink;
|
|
stat->uid = inode->i_uid;
|
|
stat->gid = inode->i_gid;
|
|
stat->rdev = inode->i_rdev;
|
|
stat->atime = inode->i_atime;
|
|
stat->mtime = inode->i_mtime;
|
|
stat->ctime = inode->i_ctime;
|
|
stat->blksize = 1 << inode->i_blkbits;
|
|
|
|
stat->size = i_size_read(inode);
|
|
stat->blocks = inode->i_blocks;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ll_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
|
|
__u64 start, __u64 len)
|
|
{
|
|
int rc;
|
|
size_t num_bytes;
|
|
struct ll_user_fiemap *fiemap;
|
|
unsigned int extent_count = fieinfo->fi_extents_max;
|
|
|
|
num_bytes = sizeof(*fiemap) + (extent_count *
|
|
sizeof(struct ll_fiemap_extent));
|
|
OBD_ALLOC_LARGE(fiemap, num_bytes);
|
|
|
|
if (fiemap == NULL)
|
|
return -ENOMEM;
|
|
|
|
fiemap->fm_flags = fieinfo->fi_flags;
|
|
fiemap->fm_extent_count = fieinfo->fi_extents_max;
|
|
fiemap->fm_start = start;
|
|
fiemap->fm_length = len;
|
|
if (extent_count > 0)
|
|
memcpy(&fiemap->fm_extents[0], fieinfo->fi_extents_start,
|
|
sizeof(struct ll_fiemap_extent));
|
|
|
|
rc = ll_do_fiemap(inode, fiemap, num_bytes);
|
|
|
|
fieinfo->fi_flags = fiemap->fm_flags;
|
|
fieinfo->fi_extents_mapped = fiemap->fm_mapped_extents;
|
|
if (extent_count > 0)
|
|
memcpy(fieinfo->fi_extents_start, &fiemap->fm_extents[0],
|
|
fiemap->fm_mapped_extents *
|
|
sizeof(struct ll_fiemap_extent));
|
|
|
|
OBD_FREE_LARGE(fiemap, num_bytes);
|
|
return rc;
|
|
}
|
|
|
|
struct posix_acl *ll_get_acl(struct inode *inode, int type)
|
|
{
|
|
struct ll_inode_info *lli = ll_i2info(inode);
|
|
struct posix_acl *acl = NULL;
|
|
|
|
spin_lock(&lli->lli_lock);
|
|
/* VFS' acl_permission_check->check_acl will release the refcount */
|
|
acl = posix_acl_dup(lli->lli_posix_acl);
|
|
spin_unlock(&lli->lli_lock);
|
|
|
|
return acl;
|
|
}
|
|
|
|
|
|
int ll_inode_permission(struct inode *inode, int mask)
|
|
{
|
|
int rc = 0;
|
|
|
|
#ifdef MAY_NOT_BLOCK
|
|
if (mask & MAY_NOT_BLOCK)
|
|
return -ECHILD;
|
|
#endif
|
|
|
|
/* as root inode are NOT getting validated in lookup operation,
|
|
* need to do it before permission check. */
|
|
|
|
if (inode == inode->i_sb->s_root->d_inode) {
|
|
rc = __ll_inode_revalidate(inode->i_sb->s_root,
|
|
MDS_INODELOCK_LOOKUP);
|
|
if (rc)
|
|
return rc;
|
|
}
|
|
|
|
CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p), inode mode %x mask %o\n",
|
|
inode->i_ino, inode->i_generation, inode, inode->i_mode, mask);
|
|
|
|
if (ll_i2sbi(inode)->ll_flags & LL_SBI_RMT_CLIENT)
|
|
return lustre_check_remote_perm(inode, mask);
|
|
|
|
ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_INODE_PERM, 1);
|
|
rc = generic_permission(inode, mask);
|
|
|
|
return rc;
|
|
}
|
|
|
|
/* -o localflock - only provides locally consistent flock locks */
|
|
struct file_operations ll_file_operations = {
|
|
.read = new_sync_read,
|
|
.read_iter = ll_file_read_iter,
|
|
.write = new_sync_write,
|
|
.write_iter = ll_file_write_iter,
|
|
.unlocked_ioctl = ll_file_ioctl,
|
|
.open = ll_file_open,
|
|
.release = ll_file_release,
|
|
.mmap = ll_file_mmap,
|
|
.llseek = ll_file_seek,
|
|
.splice_read = ll_file_splice_read,
|
|
.fsync = ll_fsync,
|
|
.flush = ll_flush
|
|
};
|
|
|
|
struct file_operations ll_file_operations_flock = {
|
|
.read = new_sync_read,
|
|
.read_iter = ll_file_read_iter,
|
|
.write = new_sync_write,
|
|
.write_iter = ll_file_write_iter,
|
|
.unlocked_ioctl = ll_file_ioctl,
|
|
.open = ll_file_open,
|
|
.release = ll_file_release,
|
|
.mmap = ll_file_mmap,
|
|
.llseek = ll_file_seek,
|
|
.splice_read = ll_file_splice_read,
|
|
.fsync = ll_fsync,
|
|
.flush = ll_flush,
|
|
.flock = ll_file_flock,
|
|
.lock = ll_file_flock
|
|
};
|
|
|
|
/* These are for -o noflock - to return ENOSYS on flock calls */
|
|
struct file_operations ll_file_operations_noflock = {
|
|
.read = new_sync_read,
|
|
.read_iter = ll_file_read_iter,
|
|
.write = new_sync_write,
|
|
.write_iter = ll_file_write_iter,
|
|
.unlocked_ioctl = ll_file_ioctl,
|
|
.open = ll_file_open,
|
|
.release = ll_file_release,
|
|
.mmap = ll_file_mmap,
|
|
.llseek = ll_file_seek,
|
|
.splice_read = ll_file_splice_read,
|
|
.fsync = ll_fsync,
|
|
.flush = ll_flush,
|
|
.flock = ll_file_noflock,
|
|
.lock = ll_file_noflock
|
|
};
|
|
|
|
struct inode_operations ll_file_inode_operations = {
|
|
.setattr = ll_setattr,
|
|
.getattr = ll_getattr,
|
|
.permission = ll_inode_permission,
|
|
.setxattr = ll_setxattr,
|
|
.getxattr = ll_getxattr,
|
|
.listxattr = ll_listxattr,
|
|
.removexattr = ll_removexattr,
|
|
.fiemap = ll_fiemap,
|
|
.get_acl = ll_get_acl,
|
|
};
|
|
|
|
/* dynamic ioctl number support routines */
|
|
static struct llioc_ctl_data {
|
|
struct rw_semaphore ioc_sem;
|
|
struct list_head ioc_head;
|
|
} llioc = {
|
|
__RWSEM_INITIALIZER(llioc.ioc_sem),
|
|
LIST_HEAD_INIT(llioc.ioc_head)
|
|
};
|
|
|
|
|
|
struct llioc_data {
|
|
struct list_head iocd_list;
|
|
unsigned int iocd_size;
|
|
llioc_callback_t iocd_cb;
|
|
unsigned int iocd_count;
|
|
unsigned int iocd_cmd[0];
|
|
};
|
|
|
|
void *ll_iocontrol_register(llioc_callback_t cb, int count, unsigned int *cmd)
|
|
{
|
|
unsigned int size;
|
|
struct llioc_data *in_data = NULL;
|
|
|
|
if (cb == NULL || cmd == NULL ||
|
|
count > LLIOC_MAX_CMD || count < 0)
|
|
return NULL;
|
|
|
|
size = sizeof(*in_data) + count * sizeof(unsigned int);
|
|
OBD_ALLOC(in_data, size);
|
|
if (in_data == NULL)
|
|
return NULL;
|
|
|
|
memset(in_data, 0, sizeof(*in_data));
|
|
in_data->iocd_size = size;
|
|
in_data->iocd_cb = cb;
|
|
in_data->iocd_count = count;
|
|
memcpy(in_data->iocd_cmd, cmd, sizeof(unsigned int) * count);
|
|
|
|
down_write(&llioc.ioc_sem);
|
|
list_add_tail(&in_data->iocd_list, &llioc.ioc_head);
|
|
up_write(&llioc.ioc_sem);
|
|
|
|
return in_data;
|
|
}
|
|
|
|
void ll_iocontrol_unregister(void *magic)
|
|
{
|
|
struct llioc_data *tmp;
|
|
|
|
if (magic == NULL)
|
|
return;
|
|
|
|
down_write(&llioc.ioc_sem);
|
|
list_for_each_entry(tmp, &llioc.ioc_head, iocd_list) {
|
|
if (tmp == magic) {
|
|
unsigned int size = tmp->iocd_size;
|
|
|
|
list_del(&tmp->iocd_list);
|
|
up_write(&llioc.ioc_sem);
|
|
|
|
OBD_FREE(tmp, size);
|
|
return;
|
|
}
|
|
}
|
|
up_write(&llioc.ioc_sem);
|
|
|
|
CWARN("didn't find iocontrol register block with magic: %p\n", magic);
|
|
}
|
|
|
|
EXPORT_SYMBOL(ll_iocontrol_register);
|
|
EXPORT_SYMBOL(ll_iocontrol_unregister);
|
|
|
|
static enum llioc_iter
|
|
ll_iocontrol_call(struct inode *inode, struct file *file,
|
|
unsigned int cmd, unsigned long arg, int *rcp)
|
|
{
|
|
enum llioc_iter ret = LLIOC_CONT;
|
|
struct llioc_data *data;
|
|
int rc = -EINVAL, i;
|
|
|
|
down_read(&llioc.ioc_sem);
|
|
list_for_each_entry(data, &llioc.ioc_head, iocd_list) {
|
|
for (i = 0; i < data->iocd_count; i++) {
|
|
if (cmd != data->iocd_cmd[i])
|
|
continue;
|
|
|
|
ret = data->iocd_cb(inode, file, cmd, arg, data, &rc);
|
|
break;
|
|
}
|
|
|
|
if (ret == LLIOC_STOP)
|
|
break;
|
|
}
|
|
up_read(&llioc.ioc_sem);
|
|
|
|
if (rcp)
|
|
*rcp = rc;
|
|
return ret;
|
|
}
|
|
|
|
int ll_layout_conf(struct inode *inode, const struct cl_object_conf *conf)
|
|
{
|
|
struct ll_inode_info *lli = ll_i2info(inode);
|
|
struct cl_env_nest nest;
|
|
struct lu_env *env;
|
|
int result;
|
|
|
|
if (lli->lli_clob == NULL)
|
|
return 0;
|
|
|
|
env = cl_env_nested_get(&nest);
|
|
if (IS_ERR(env))
|
|
return PTR_ERR(env);
|
|
|
|
result = cl_conf_set(env, lli->lli_clob, conf);
|
|
cl_env_nested_put(&nest, env);
|
|
|
|
if (conf->coc_opc == OBJECT_CONF_SET) {
|
|
struct ldlm_lock *lock = conf->coc_lock;
|
|
|
|
LASSERT(lock != NULL);
|
|
LASSERT(ldlm_has_layout(lock));
|
|
if (result == 0) {
|
|
/* it can only be allowed to match after layout is
|
|
* applied to inode otherwise false layout would be
|
|
* seen. Applying layout should happen before dropping
|
|
* the intent lock. */
|
|
ldlm_lock_allow_match(lock);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/* Fetch layout from MDT with getxattr request, if it's not ready yet */
|
|
static int ll_layout_fetch(struct inode *inode, struct ldlm_lock *lock)
|
|
|
|
{
|
|
struct ll_sb_info *sbi = ll_i2sbi(inode);
|
|
struct obd_capa *oc;
|
|
struct ptlrpc_request *req;
|
|
struct mdt_body *body;
|
|
void *lvbdata;
|
|
void *lmm;
|
|
int lmmsize;
|
|
int rc;
|
|
|
|
CDEBUG(D_INODE, DFID" LVB_READY=%d l_lvb_data=%p l_lvb_len=%d\n",
|
|
PFID(ll_inode2fid(inode)), !!(lock->l_flags & LDLM_FL_LVB_READY),
|
|
lock->l_lvb_data, lock->l_lvb_len);
|
|
|
|
if ((lock->l_lvb_data != NULL) && (lock->l_flags & LDLM_FL_LVB_READY))
|
|
return 0;
|
|
|
|
/* if layout lock was granted right away, the layout is returned
|
|
* within DLM_LVB of dlm reply; otherwise if the lock was ever
|
|
* blocked and then granted via completion ast, we have to fetch
|
|
* layout here. Please note that we can't use the LVB buffer in
|
|
* completion AST because it doesn't have a large enough buffer */
|
|
oc = ll_mdscapa_get(inode);
|
|
rc = ll_get_default_mdsize(sbi, &lmmsize);
|
|
if (rc == 0)
|
|
rc = md_getxattr(sbi->ll_md_exp, ll_inode2fid(inode), oc,
|
|
OBD_MD_FLXATTR, XATTR_NAME_LOV, NULL, 0,
|
|
lmmsize, 0, &req);
|
|
capa_put(oc);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
|
|
if (body == NULL)
|
|
GOTO(out, rc = -EPROTO);
|
|
|
|
lmmsize = body->eadatasize;
|
|
if (lmmsize == 0) /* empty layout */
|
|
GOTO(out, rc = 0);
|
|
|
|
lmm = req_capsule_server_sized_get(&req->rq_pill, &RMF_EADATA, lmmsize);
|
|
if (lmm == NULL)
|
|
GOTO(out, rc = -EFAULT);
|
|
|
|
OBD_ALLOC_LARGE(lvbdata, lmmsize);
|
|
if (lvbdata == NULL)
|
|
GOTO(out, rc = -ENOMEM);
|
|
|
|
memcpy(lvbdata, lmm, lmmsize);
|
|
lock_res_and_lock(lock);
|
|
if (lock->l_lvb_data != NULL)
|
|
OBD_FREE_LARGE(lock->l_lvb_data, lock->l_lvb_len);
|
|
|
|
lock->l_lvb_data = lvbdata;
|
|
lock->l_lvb_len = lmmsize;
|
|
unlock_res_and_lock(lock);
|
|
|
|
out:
|
|
ptlrpc_req_finished(req);
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* Apply the layout to the inode. Layout lock is held and will be released
|
|
* in this function.
|
|
*/
|
|
static int ll_layout_lock_set(struct lustre_handle *lockh, ldlm_mode_t mode,
|
|
struct inode *inode, __u32 *gen, bool reconf)
|
|
{
|
|
struct ll_inode_info *lli = ll_i2info(inode);
|
|
struct ll_sb_info *sbi = ll_i2sbi(inode);
|
|
struct ldlm_lock *lock;
|
|
struct lustre_md md = { NULL };
|
|
struct cl_object_conf conf;
|
|
int rc = 0;
|
|
bool lvb_ready;
|
|
bool wait_layout = false;
|
|
|
|
LASSERT(lustre_handle_is_used(lockh));
|
|
|
|
lock = ldlm_handle2lock(lockh);
|
|
LASSERT(lock != NULL);
|
|
LASSERT(ldlm_has_layout(lock));
|
|
|
|
LDLM_DEBUG(lock, "File %p/"DFID" being reconfigured: %d.\n",
|
|
inode, PFID(&lli->lli_fid), reconf);
|
|
|
|
/* in case this is a caching lock and reinstate with new inode */
|
|
md_set_lock_data(sbi->ll_md_exp, &lockh->cookie, inode, NULL);
|
|
|
|
lock_res_and_lock(lock);
|
|
lvb_ready = !!(lock->l_flags & LDLM_FL_LVB_READY);
|
|
unlock_res_and_lock(lock);
|
|
/* checking lvb_ready is racy but this is okay. The worst case is
|
|
* that multi processes may configure the file on the same time. */
|
|
if (lvb_ready || !reconf) {
|
|
rc = -ENODATA;
|
|
if (lvb_ready) {
|
|
/* layout_gen must be valid if layout lock is not
|
|
* cancelled and stripe has already set */
|
|
*gen = ll_layout_version_get(lli);
|
|
rc = 0;
|
|
}
|
|
GOTO(out, rc);
|
|
}
|
|
|
|
rc = ll_layout_fetch(inode, lock);
|
|
if (rc < 0)
|
|
GOTO(out, rc);
|
|
|
|
/* for layout lock, lmm is returned in lock's lvb.
|
|
* lvb_data is immutable if the lock is held so it's safe to access it
|
|
* without res lock. See the description in ldlm_lock_decref_internal()
|
|
* for the condition to free lvb_data of layout lock */
|
|
if (lock->l_lvb_data != NULL) {
|
|
rc = obd_unpackmd(sbi->ll_dt_exp, &md.lsm,
|
|
lock->l_lvb_data, lock->l_lvb_len);
|
|
if (rc >= 0) {
|
|
*gen = LL_LAYOUT_GEN_EMPTY;
|
|
if (md.lsm != NULL)
|
|
*gen = md.lsm->lsm_layout_gen;
|
|
rc = 0;
|
|
} else {
|
|
CERROR("%s: file "DFID" unpackmd error: %d\n",
|
|
ll_get_fsname(inode->i_sb, NULL, 0),
|
|
PFID(&lli->lli_fid), rc);
|
|
}
|
|
}
|
|
if (rc < 0)
|
|
GOTO(out, rc);
|
|
|
|
/* set layout to file. Unlikely this will fail as old layout was
|
|
* surely eliminated */
|
|
memset(&conf, 0, sizeof(conf));
|
|
conf.coc_opc = OBJECT_CONF_SET;
|
|
conf.coc_inode = inode;
|
|
conf.coc_lock = lock;
|
|
conf.u.coc_md = &md;
|
|
rc = ll_layout_conf(inode, &conf);
|
|
|
|
if (md.lsm != NULL)
|
|
obd_free_memmd(sbi->ll_dt_exp, &md.lsm);
|
|
|
|
/* refresh layout failed, need to wait */
|
|
wait_layout = rc == -EBUSY;
|
|
|
|
out:
|
|
LDLM_LOCK_PUT(lock);
|
|
ldlm_lock_decref(lockh, mode);
|
|
|
|
/* wait for IO to complete if it's still being used. */
|
|
if (wait_layout) {
|
|
CDEBUG(D_INODE, "%s: %p/"DFID" wait for layout reconf.\n",
|
|
ll_get_fsname(inode->i_sb, NULL, 0),
|
|
inode, PFID(&lli->lli_fid));
|
|
|
|
memset(&conf, 0, sizeof(conf));
|
|
conf.coc_opc = OBJECT_CONF_WAIT;
|
|
conf.coc_inode = inode;
|
|
rc = ll_layout_conf(inode, &conf);
|
|
if (rc == 0)
|
|
rc = -EAGAIN;
|
|
|
|
CDEBUG(D_INODE, "file: "DFID" waiting layout return: %d.\n",
|
|
PFID(&lli->lli_fid), rc);
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* This function checks if there exists a LAYOUT lock on the client side,
|
|
* or enqueues it if it doesn't have one in cache.
|
|
*
|
|
* This function will not hold layout lock so it may be revoked any time after
|
|
* this function returns. Any operations depend on layout should be redone
|
|
* in that case.
|
|
*
|
|
* This function should be called before lov_io_init() to get an uptodate
|
|
* layout version, the caller should save the version number and after IO
|
|
* is finished, this function should be called again to verify that layout
|
|
* is not changed during IO time.
|
|
*/
|
|
int ll_layout_refresh(struct inode *inode, __u32 *gen)
|
|
{
|
|
struct ll_inode_info *lli = ll_i2info(inode);
|
|
struct ll_sb_info *sbi = ll_i2sbi(inode);
|
|
struct md_op_data *op_data;
|
|
struct lookup_intent it;
|
|
struct lustre_handle lockh;
|
|
ldlm_mode_t mode;
|
|
struct ldlm_enqueue_info einfo = {
|
|
.ei_type = LDLM_IBITS,
|
|
.ei_mode = LCK_CR,
|
|
.ei_cb_bl = ll_md_blocking_ast,
|
|
.ei_cb_cp = ldlm_completion_ast,
|
|
};
|
|
int rc;
|
|
|
|
*gen = ll_layout_version_get(lli);
|
|
if (!(sbi->ll_flags & LL_SBI_LAYOUT_LOCK) || *gen != LL_LAYOUT_GEN_NONE)
|
|
return 0;
|
|
|
|
/* sanity checks */
|
|
LASSERT(fid_is_sane(ll_inode2fid(inode)));
|
|
LASSERT(S_ISREG(inode->i_mode));
|
|
|
|
/* take layout lock mutex to enqueue layout lock exclusively. */
|
|
mutex_lock(&lli->lli_layout_mutex);
|
|
|
|
again:
|
|
/* mostly layout lock is caching on the local side, so try to match
|
|
* it before grabbing layout lock mutex. */
|
|
mode = ll_take_md_lock(inode, MDS_INODELOCK_LAYOUT, &lockh, 0,
|
|
LCK_CR | LCK_CW | LCK_PR | LCK_PW);
|
|
if (mode != 0) { /* hit cached lock */
|
|
rc = ll_layout_lock_set(&lockh, mode, inode, gen, true);
|
|
if (rc == -EAGAIN)
|
|
goto again;
|
|
|
|
mutex_unlock(&lli->lli_layout_mutex);
|
|
return rc;
|
|
}
|
|
|
|
op_data = ll_prep_md_op_data(NULL, inode, inode, NULL,
|
|
0, 0, LUSTRE_OPC_ANY, NULL);
|
|
if (IS_ERR(op_data)) {
|
|
mutex_unlock(&lli->lli_layout_mutex);
|
|
return PTR_ERR(op_data);
|
|
}
|
|
|
|
/* have to enqueue one */
|
|
memset(&it, 0, sizeof(it));
|
|
it.it_op = IT_LAYOUT;
|
|
lockh.cookie = 0ULL;
|
|
|
|
LDLM_DEBUG_NOLOCK("%s: requeue layout lock for file %p/"DFID".\n",
|
|
ll_get_fsname(inode->i_sb, NULL, 0), inode,
|
|
PFID(&lli->lli_fid));
|
|
|
|
rc = md_enqueue(sbi->ll_md_exp, &einfo, &it, op_data, &lockh,
|
|
NULL, 0, NULL, 0);
|
|
if (it.d.lustre.it_data != NULL)
|
|
ptlrpc_req_finished(it.d.lustre.it_data);
|
|
it.d.lustre.it_data = NULL;
|
|
|
|
ll_finish_md_op_data(op_data);
|
|
|
|
mode = it.d.lustre.it_lock_mode;
|
|
it.d.lustre.it_lock_mode = 0;
|
|
ll_intent_drop_lock(&it);
|
|
|
|
if (rc == 0) {
|
|
/* set lock data in case this is a new lock */
|
|
ll_set_lock_data(sbi->ll_md_exp, inode, &it, NULL);
|
|
rc = ll_layout_lock_set(&lockh, mode, inode, gen, true);
|
|
if (rc == -EAGAIN)
|
|
goto again;
|
|
}
|
|
mutex_unlock(&lli->lli_layout_mutex);
|
|
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* This function send a restore request to the MDT
|
|
*/
|
|
int ll_layout_restore(struct inode *inode)
|
|
{
|
|
struct hsm_user_request *hur;
|
|
int len, rc;
|
|
|
|
len = sizeof(struct hsm_user_request) +
|
|
sizeof(struct hsm_user_item);
|
|
OBD_ALLOC(hur, len);
|
|
if (hur == NULL)
|
|
return -ENOMEM;
|
|
|
|
hur->hur_request.hr_action = HUA_RESTORE;
|
|
hur->hur_request.hr_archive_id = 0;
|
|
hur->hur_request.hr_flags = 0;
|
|
memcpy(&hur->hur_user_item[0].hui_fid, &ll_i2info(inode)->lli_fid,
|
|
sizeof(hur->hur_user_item[0].hui_fid));
|
|
hur->hur_user_item[0].hui_extent.length = -1;
|
|
hur->hur_request.hr_itemcount = 1;
|
|
rc = obd_iocontrol(LL_IOC_HSM_REQUEST, cl_i2sbi(inode)->ll_md_exp,
|
|
len, hur, NULL);
|
|
OBD_FREE(hur, len);
|
|
return rc;
|
|
}
|