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![Olga Kornievskaia](/assets/img/avatar_default.png)
If the client sends an "inter" copy to the destination server but it only supports "intra" copy, it can return ESTALE (since it doesn't know anything about the file handle from the other server and does not recognize the special case of "inter" copy). Translate this error as ENOTSUPP and also send OFFLOAD_CANCEL to the source server so that it can clean up state. Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
1039 lines
27 KiB
C
1039 lines
27 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2014 Anna Schumaker <Anna.Schumaker@Netapp.com>
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*/
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#include <linux/fs.h>
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#include <linux/sunrpc/addr.h>
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#include <linux/sunrpc/sched.h>
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#include <linux/nfs.h>
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#include <linux/nfs3.h>
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#include <linux/nfs4.h>
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#include <linux/nfs_xdr.h>
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#include <linux/nfs_fs.h>
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#include "nfs4_fs.h"
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#include "nfs42.h"
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#include "iostat.h"
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#include "pnfs.h"
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#include "nfs4session.h"
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#include "internal.h"
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#include "delegation.h"
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#define NFSDBG_FACILITY NFSDBG_PROC
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static int nfs42_do_offload_cancel_async(struct file *dst, nfs4_stateid *std);
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static void nfs42_set_netaddr(struct file *filep, struct nfs42_netaddr *naddr)
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{
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struct nfs_client *clp = (NFS_SERVER(file_inode(filep)))->nfs_client;
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unsigned short port = 2049;
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rcu_read_lock();
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naddr->netid_len = scnprintf(naddr->netid,
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sizeof(naddr->netid), "%s",
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rpc_peeraddr2str(clp->cl_rpcclient,
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RPC_DISPLAY_NETID));
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naddr->addr_len = scnprintf(naddr->addr,
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sizeof(naddr->addr),
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"%s.%u.%u",
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rpc_peeraddr2str(clp->cl_rpcclient,
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RPC_DISPLAY_ADDR),
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port >> 8, port & 255);
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rcu_read_unlock();
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}
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static int _nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
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struct nfs_lock_context *lock, loff_t offset, loff_t len)
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{
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struct inode *inode = file_inode(filep);
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struct nfs_server *server = NFS_SERVER(inode);
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struct nfs42_falloc_args args = {
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.falloc_fh = NFS_FH(inode),
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.falloc_offset = offset,
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.falloc_length = len,
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.falloc_bitmask = server->cache_consistency_bitmask,
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};
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struct nfs42_falloc_res res = {
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.falloc_server = server,
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};
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int status;
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msg->rpc_argp = &args;
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msg->rpc_resp = &res;
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status = nfs4_set_rw_stateid(&args.falloc_stateid, lock->open_context,
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lock, FMODE_WRITE);
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if (status)
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return status;
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res.falloc_fattr = nfs_alloc_fattr();
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if (!res.falloc_fattr)
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return -ENOMEM;
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status = nfs4_call_sync(server->client, server, msg,
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&args.seq_args, &res.seq_res, 0);
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if (status == 0)
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status = nfs_post_op_update_inode(inode, res.falloc_fattr);
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kfree(res.falloc_fattr);
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return status;
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}
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static int nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
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loff_t offset, loff_t len)
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{
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struct nfs_server *server = NFS_SERVER(file_inode(filep));
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struct nfs4_exception exception = { };
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struct nfs_lock_context *lock;
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int err;
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lock = nfs_get_lock_context(nfs_file_open_context(filep));
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if (IS_ERR(lock))
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return PTR_ERR(lock);
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exception.inode = file_inode(filep);
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exception.state = lock->open_context->state;
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do {
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err = _nfs42_proc_fallocate(msg, filep, lock, offset, len);
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if (err == -ENOTSUPP) {
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err = -EOPNOTSUPP;
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break;
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}
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err = nfs4_handle_exception(server, err, &exception);
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} while (exception.retry);
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nfs_put_lock_context(lock);
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return err;
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}
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int nfs42_proc_allocate(struct file *filep, loff_t offset, loff_t len)
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{
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struct rpc_message msg = {
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.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ALLOCATE],
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};
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struct inode *inode = file_inode(filep);
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int err;
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if (!nfs_server_capable(inode, NFS_CAP_ALLOCATE))
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return -EOPNOTSUPP;
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inode_lock(inode);
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err = nfs42_proc_fallocate(&msg, filep, offset, len);
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if (err == -EOPNOTSUPP)
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NFS_SERVER(inode)->caps &= ~NFS_CAP_ALLOCATE;
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inode_unlock(inode);
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return err;
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}
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int nfs42_proc_deallocate(struct file *filep, loff_t offset, loff_t len)
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{
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struct rpc_message msg = {
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.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DEALLOCATE],
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};
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struct inode *inode = file_inode(filep);
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int err;
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if (!nfs_server_capable(inode, NFS_CAP_DEALLOCATE))
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return -EOPNOTSUPP;
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inode_lock(inode);
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err = nfs_sync_inode(inode);
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if (err)
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goto out_unlock;
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err = nfs42_proc_fallocate(&msg, filep, offset, len);
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if (err == 0)
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truncate_pagecache_range(inode, offset, (offset + len) -1);
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if (err == -EOPNOTSUPP)
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NFS_SERVER(inode)->caps &= ~NFS_CAP_DEALLOCATE;
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out_unlock:
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inode_unlock(inode);
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return err;
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}
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static int handle_async_copy(struct nfs42_copy_res *res,
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struct nfs_server *server,
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struct file *src,
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struct file *dst,
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nfs4_stateid *src_stateid)
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{
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struct nfs4_copy_state *copy, *tmp_copy;
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int status = NFS4_OK;
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bool found_pending = false;
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struct nfs_open_context *ctx = nfs_file_open_context(dst);
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copy = kzalloc(sizeof(struct nfs4_copy_state), GFP_NOFS);
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if (!copy)
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return -ENOMEM;
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spin_lock(&server->nfs_client->cl_lock);
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list_for_each_entry(tmp_copy, &server->nfs_client->pending_cb_stateids,
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copies) {
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if (memcmp(&res->write_res.stateid, &tmp_copy->stateid,
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NFS4_STATEID_SIZE))
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continue;
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found_pending = true;
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list_del(&tmp_copy->copies);
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break;
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}
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if (found_pending) {
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spin_unlock(&server->nfs_client->cl_lock);
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kfree(copy);
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copy = tmp_copy;
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goto out;
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}
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memcpy(©->stateid, &res->write_res.stateid, NFS4_STATEID_SIZE);
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init_completion(©->completion);
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copy->parent_state = ctx->state;
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list_add_tail(©->copies, &server->ss_copies);
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spin_unlock(&server->nfs_client->cl_lock);
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status = wait_for_completion_interruptible(©->completion);
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spin_lock(&server->nfs_client->cl_lock);
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list_del_init(©->copies);
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spin_unlock(&server->nfs_client->cl_lock);
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if (status == -ERESTARTSYS) {
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goto out_cancel;
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} else if (copy->flags) {
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status = -EAGAIN;
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goto out_cancel;
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}
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out:
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res->write_res.count = copy->count;
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memcpy(&res->write_res.verifier, ©->verf, sizeof(copy->verf));
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status = -copy->error;
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kfree(copy);
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return status;
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out_cancel:
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nfs42_do_offload_cancel_async(dst, ©->stateid);
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kfree(copy);
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return status;
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}
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static int process_copy_commit(struct file *dst, loff_t pos_dst,
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struct nfs42_copy_res *res)
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{
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struct nfs_commitres cres;
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int status = -ENOMEM;
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cres.verf = kzalloc(sizeof(struct nfs_writeverf), GFP_NOFS);
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if (!cres.verf)
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goto out;
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status = nfs4_proc_commit(dst, pos_dst, res->write_res.count, &cres);
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if (status)
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goto out_free;
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if (nfs_write_verifier_cmp(&res->write_res.verifier.verifier,
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&cres.verf->verifier)) {
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dprintk("commit verf differs from copy verf\n");
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status = -EAGAIN;
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}
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out_free:
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kfree(cres.verf);
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out:
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return status;
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}
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static ssize_t _nfs42_proc_copy(struct file *src,
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struct nfs_lock_context *src_lock,
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struct file *dst,
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struct nfs_lock_context *dst_lock,
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struct nfs42_copy_args *args,
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struct nfs42_copy_res *res,
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struct nl4_server *nss,
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nfs4_stateid *cnr_stateid)
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{
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struct rpc_message msg = {
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.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COPY],
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.rpc_argp = args,
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.rpc_resp = res,
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};
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struct inode *dst_inode = file_inode(dst);
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struct nfs_server *server = NFS_SERVER(dst_inode);
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loff_t pos_src = args->src_pos;
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loff_t pos_dst = args->dst_pos;
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size_t count = args->count;
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ssize_t status;
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if (nss) {
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args->cp_src = nss;
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nfs4_stateid_copy(&args->src_stateid, cnr_stateid);
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} else {
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status = nfs4_set_rw_stateid(&args->src_stateid,
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src_lock->open_context, src_lock, FMODE_READ);
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if (status)
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return status;
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}
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status = nfs_filemap_write_and_wait_range(file_inode(src)->i_mapping,
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pos_src, pos_src + (loff_t)count - 1);
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if (status)
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return status;
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status = nfs4_set_rw_stateid(&args->dst_stateid, dst_lock->open_context,
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dst_lock, FMODE_WRITE);
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if (status)
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return status;
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status = nfs_sync_inode(dst_inode);
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if (status)
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return status;
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res->commit_res.verf = NULL;
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if (args->sync) {
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res->commit_res.verf =
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kzalloc(sizeof(struct nfs_writeverf), GFP_NOFS);
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if (!res->commit_res.verf)
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return -ENOMEM;
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}
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set_bit(NFS_CLNT_DST_SSC_COPY_STATE,
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&dst_lock->open_context->state->flags);
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status = nfs4_call_sync(server->client, server, &msg,
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&args->seq_args, &res->seq_res, 0);
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if (status == -ENOTSUPP)
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server->caps &= ~NFS_CAP_COPY;
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if (status)
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goto out;
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if (args->sync &&
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nfs_write_verifier_cmp(&res->write_res.verifier.verifier,
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&res->commit_res.verf->verifier)) {
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status = -EAGAIN;
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goto out;
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}
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if (!res->synchronous) {
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status = handle_async_copy(res, server, src, dst,
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&args->src_stateid);
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if (status)
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return status;
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}
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if ((!res->synchronous || !args->sync) &&
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res->write_res.verifier.committed != NFS_FILE_SYNC) {
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status = process_copy_commit(dst, pos_dst, res);
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if (status)
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return status;
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}
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truncate_pagecache_range(dst_inode, pos_dst,
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pos_dst + res->write_res.count);
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status = res->write_res.count;
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out:
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if (args->sync)
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kfree(res->commit_res.verf);
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return status;
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}
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ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src,
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struct file *dst, loff_t pos_dst, size_t count,
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struct nl4_server *nss,
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nfs4_stateid *cnr_stateid)
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{
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struct nfs_server *server = NFS_SERVER(file_inode(dst));
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struct nfs_lock_context *src_lock;
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struct nfs_lock_context *dst_lock;
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struct nfs42_copy_args args = {
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.src_fh = NFS_FH(file_inode(src)),
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.src_pos = pos_src,
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.dst_fh = NFS_FH(file_inode(dst)),
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.dst_pos = pos_dst,
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.count = count,
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.sync = false,
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};
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struct nfs42_copy_res res;
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struct nfs4_exception src_exception = {
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.inode = file_inode(src),
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.stateid = &args.src_stateid,
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};
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struct nfs4_exception dst_exception = {
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.inode = file_inode(dst),
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.stateid = &args.dst_stateid,
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};
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ssize_t err, err2;
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src_lock = nfs_get_lock_context(nfs_file_open_context(src));
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if (IS_ERR(src_lock))
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return PTR_ERR(src_lock);
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src_exception.state = src_lock->open_context->state;
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dst_lock = nfs_get_lock_context(nfs_file_open_context(dst));
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if (IS_ERR(dst_lock)) {
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err = PTR_ERR(dst_lock);
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goto out_put_src_lock;
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}
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dst_exception.state = dst_lock->open_context->state;
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do {
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inode_lock(file_inode(dst));
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err = _nfs42_proc_copy(src, src_lock,
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dst, dst_lock,
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&args, &res,
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nss, cnr_stateid);
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inode_unlock(file_inode(dst));
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if (err >= 0)
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break;
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if (err == -ENOTSUPP) {
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err = -EOPNOTSUPP;
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break;
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} else if (err == -EAGAIN) {
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dst_exception.retry = 1;
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continue;
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} else if (err == -NFS4ERR_OFFLOAD_NO_REQS && !args.sync) {
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args.sync = true;
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dst_exception.retry = 1;
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continue;
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} else if (err == -ESTALE &&
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!nfs42_files_from_same_server(src, dst)) {
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nfs42_do_offload_cancel_async(src, &args.src_stateid);
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err = -EOPNOTSUPP;
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break;
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}
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err2 = nfs4_handle_exception(server, err, &src_exception);
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err = nfs4_handle_exception(server, err, &dst_exception);
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if (!err)
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err = err2;
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} while (src_exception.retry || dst_exception.retry);
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|
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nfs_put_lock_context(dst_lock);
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out_put_src_lock:
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nfs_put_lock_context(src_lock);
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return err;
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}
|
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|
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struct nfs42_offloadcancel_data {
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struct nfs_server *seq_server;
|
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struct nfs42_offload_status_args args;
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struct nfs42_offload_status_res res;
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};
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|
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static void nfs42_offload_cancel_prepare(struct rpc_task *task, void *calldata)
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{
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struct nfs42_offloadcancel_data *data = calldata;
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|
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nfs4_setup_sequence(data->seq_server->nfs_client,
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&data->args.osa_seq_args,
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&data->res.osr_seq_res, task);
|
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}
|
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|
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static void nfs42_offload_cancel_done(struct rpc_task *task, void *calldata)
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{
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struct nfs42_offloadcancel_data *data = calldata;
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|
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nfs41_sequence_done(task, &data->res.osr_seq_res);
|
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if (task->tk_status &&
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nfs4_async_handle_error(task, data->seq_server, NULL,
|
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NULL) == -EAGAIN)
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rpc_restart_call_prepare(task);
|
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}
|
|
|
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static void nfs42_free_offloadcancel_data(void *data)
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{
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kfree(data);
|
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}
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|
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static const struct rpc_call_ops nfs42_offload_cancel_ops = {
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.rpc_call_prepare = nfs42_offload_cancel_prepare,
|
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.rpc_call_done = nfs42_offload_cancel_done,
|
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.rpc_release = nfs42_free_offloadcancel_data,
|
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};
|
|
|
|
static int nfs42_do_offload_cancel_async(struct file *dst,
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nfs4_stateid *stateid)
|
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{
|
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struct nfs_server *dst_server = NFS_SERVER(file_inode(dst));
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struct nfs42_offloadcancel_data *data = NULL;
|
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struct nfs_open_context *ctx = nfs_file_open_context(dst);
|
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struct rpc_task *task;
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struct rpc_message msg = {
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.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OFFLOAD_CANCEL],
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.rpc_cred = ctx->cred,
|
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};
|
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struct rpc_task_setup task_setup_data = {
|
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.rpc_client = dst_server->client,
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.rpc_message = &msg,
|
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.callback_ops = &nfs42_offload_cancel_ops,
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.workqueue = nfsiod_workqueue,
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.flags = RPC_TASK_ASYNC,
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};
|
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int status;
|
|
|
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if (!(dst_server->caps & NFS_CAP_OFFLOAD_CANCEL))
|
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return -EOPNOTSUPP;
|
|
|
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data = kzalloc(sizeof(struct nfs42_offloadcancel_data), GFP_NOFS);
|
|
if (data == NULL)
|
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return -ENOMEM;
|
|
|
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data->seq_server = dst_server;
|
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data->args.osa_src_fh = NFS_FH(file_inode(dst));
|
|
memcpy(&data->args.osa_stateid, stateid,
|
|
sizeof(data->args.osa_stateid));
|
|
msg.rpc_argp = &data->args;
|
|
msg.rpc_resp = &data->res;
|
|
task_setup_data.callback_data = data;
|
|
nfs4_init_sequence(&data->args.osa_seq_args, &data->res.osr_seq_res,
|
|
1, 0);
|
|
task = rpc_run_task(&task_setup_data);
|
|
if (IS_ERR(task))
|
|
return PTR_ERR(task);
|
|
status = rpc_wait_for_completion_task(task);
|
|
if (status == -ENOTSUPP)
|
|
dst_server->caps &= ~NFS_CAP_OFFLOAD_CANCEL;
|
|
rpc_put_task(task);
|
|
return status;
|
|
}
|
|
|
|
int _nfs42_proc_copy_notify(struct file *src, struct file *dst,
|
|
struct nfs42_copy_notify_args *args,
|
|
struct nfs42_copy_notify_res *res)
|
|
{
|
|
struct nfs_server *src_server = NFS_SERVER(file_inode(src));
|
|
struct rpc_message msg = {
|
|
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COPY_NOTIFY],
|
|
.rpc_argp = args,
|
|
.rpc_resp = res,
|
|
};
|
|
int status;
|
|
struct nfs_open_context *ctx;
|
|
struct nfs_lock_context *l_ctx;
|
|
|
|
ctx = get_nfs_open_context(nfs_file_open_context(src));
|
|
l_ctx = nfs_get_lock_context(ctx);
|
|
if (IS_ERR(l_ctx))
|
|
return PTR_ERR(l_ctx);
|
|
|
|
status = nfs4_set_rw_stateid(&args->cna_src_stateid, ctx, l_ctx,
|
|
FMODE_READ);
|
|
nfs_put_lock_context(l_ctx);
|
|
if (status)
|
|
return status;
|
|
|
|
status = nfs4_call_sync(src_server->client, src_server, &msg,
|
|
&args->cna_seq_args, &res->cnr_seq_res, 0);
|
|
if (status == -ENOTSUPP)
|
|
src_server->caps &= ~NFS_CAP_COPY_NOTIFY;
|
|
|
|
put_nfs_open_context(nfs_file_open_context(src));
|
|
return status;
|
|
}
|
|
|
|
int nfs42_proc_copy_notify(struct file *src, struct file *dst,
|
|
struct nfs42_copy_notify_res *res)
|
|
{
|
|
struct nfs_server *src_server = NFS_SERVER(file_inode(src));
|
|
struct nfs42_copy_notify_args *args;
|
|
struct nfs4_exception exception = {
|
|
.inode = file_inode(src),
|
|
};
|
|
int status;
|
|
|
|
if (!(src_server->caps & NFS_CAP_COPY_NOTIFY))
|
|
return -EOPNOTSUPP;
|
|
|
|
args = kzalloc(sizeof(struct nfs42_copy_notify_args), GFP_NOFS);
|
|
if (args == NULL)
|
|
return -ENOMEM;
|
|
|
|
args->cna_src_fh = NFS_FH(file_inode(src)),
|
|
args->cna_dst.nl4_type = NL4_NETADDR;
|
|
nfs42_set_netaddr(dst, &args->cna_dst.u.nl4_addr);
|
|
exception.stateid = &args->cna_src_stateid;
|
|
|
|
do {
|
|
status = _nfs42_proc_copy_notify(src, dst, args, res);
|
|
if (status == -ENOTSUPP) {
|
|
status = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
status = nfs4_handle_exception(src_server, status, &exception);
|
|
} while (exception.retry);
|
|
|
|
out:
|
|
kfree(args);
|
|
return status;
|
|
}
|
|
|
|
static loff_t _nfs42_proc_llseek(struct file *filep,
|
|
struct nfs_lock_context *lock, loff_t offset, int whence)
|
|
{
|
|
struct inode *inode = file_inode(filep);
|
|
struct nfs42_seek_args args = {
|
|
.sa_fh = NFS_FH(inode),
|
|
.sa_offset = offset,
|
|
.sa_what = (whence == SEEK_HOLE) ?
|
|
NFS4_CONTENT_HOLE : NFS4_CONTENT_DATA,
|
|
};
|
|
struct nfs42_seek_res res;
|
|
struct rpc_message msg = {
|
|
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEEK],
|
|
.rpc_argp = &args,
|
|
.rpc_resp = &res,
|
|
};
|
|
struct nfs_server *server = NFS_SERVER(inode);
|
|
int status;
|
|
|
|
if (!nfs_server_capable(inode, NFS_CAP_SEEK))
|
|
return -ENOTSUPP;
|
|
|
|
status = nfs4_set_rw_stateid(&args.sa_stateid, lock->open_context,
|
|
lock, FMODE_READ);
|
|
if (status)
|
|
return status;
|
|
|
|
status = nfs_filemap_write_and_wait_range(inode->i_mapping,
|
|
offset, LLONG_MAX);
|
|
if (status)
|
|
return status;
|
|
|
|
status = nfs4_call_sync(server->client, server, &msg,
|
|
&args.seq_args, &res.seq_res, 0);
|
|
if (status == -ENOTSUPP)
|
|
server->caps &= ~NFS_CAP_SEEK;
|
|
if (status)
|
|
return status;
|
|
|
|
return vfs_setpos(filep, res.sr_offset, inode->i_sb->s_maxbytes);
|
|
}
|
|
|
|
loff_t nfs42_proc_llseek(struct file *filep, loff_t offset, int whence)
|
|
{
|
|
struct nfs_server *server = NFS_SERVER(file_inode(filep));
|
|
struct nfs4_exception exception = { };
|
|
struct nfs_lock_context *lock;
|
|
loff_t err;
|
|
|
|
lock = nfs_get_lock_context(nfs_file_open_context(filep));
|
|
if (IS_ERR(lock))
|
|
return PTR_ERR(lock);
|
|
|
|
exception.inode = file_inode(filep);
|
|
exception.state = lock->open_context->state;
|
|
|
|
do {
|
|
err = _nfs42_proc_llseek(filep, lock, offset, whence);
|
|
if (err >= 0)
|
|
break;
|
|
if (err == -ENOTSUPP) {
|
|
err = -EOPNOTSUPP;
|
|
break;
|
|
}
|
|
err = nfs4_handle_exception(server, err, &exception);
|
|
} while (exception.retry);
|
|
|
|
nfs_put_lock_context(lock);
|
|
return err;
|
|
}
|
|
|
|
|
|
static void
|
|
nfs42_layoutstat_prepare(struct rpc_task *task, void *calldata)
|
|
{
|
|
struct nfs42_layoutstat_data *data = calldata;
|
|
struct inode *inode = data->inode;
|
|
struct nfs_server *server = NFS_SERVER(inode);
|
|
struct pnfs_layout_hdr *lo;
|
|
|
|
spin_lock(&inode->i_lock);
|
|
lo = NFS_I(inode)->layout;
|
|
if (!pnfs_layout_is_valid(lo)) {
|
|
spin_unlock(&inode->i_lock);
|
|
rpc_exit(task, 0);
|
|
return;
|
|
}
|
|
nfs4_stateid_copy(&data->args.stateid, &lo->plh_stateid);
|
|
spin_unlock(&inode->i_lock);
|
|
nfs4_setup_sequence(server->nfs_client, &data->args.seq_args,
|
|
&data->res.seq_res, task);
|
|
}
|
|
|
|
static void
|
|
nfs42_layoutstat_done(struct rpc_task *task, void *calldata)
|
|
{
|
|
struct nfs42_layoutstat_data *data = calldata;
|
|
struct inode *inode = data->inode;
|
|
struct pnfs_layout_hdr *lo;
|
|
|
|
if (!nfs4_sequence_done(task, &data->res.seq_res))
|
|
return;
|
|
|
|
switch (task->tk_status) {
|
|
case 0:
|
|
break;
|
|
case -NFS4ERR_BADHANDLE:
|
|
case -ESTALE:
|
|
pnfs_destroy_layout(NFS_I(inode));
|
|
break;
|
|
case -NFS4ERR_EXPIRED:
|
|
case -NFS4ERR_ADMIN_REVOKED:
|
|
case -NFS4ERR_DELEG_REVOKED:
|
|
case -NFS4ERR_STALE_STATEID:
|
|
case -NFS4ERR_BAD_STATEID:
|
|
spin_lock(&inode->i_lock);
|
|
lo = NFS_I(inode)->layout;
|
|
if (pnfs_layout_is_valid(lo) &&
|
|
nfs4_stateid_match(&data->args.stateid,
|
|
&lo->plh_stateid)) {
|
|
LIST_HEAD(head);
|
|
|
|
/*
|
|
* Mark the bad layout state as invalid, then retry
|
|
* with the current stateid.
|
|
*/
|
|
pnfs_mark_layout_stateid_invalid(lo, &head);
|
|
spin_unlock(&inode->i_lock);
|
|
pnfs_free_lseg_list(&head);
|
|
nfs_commit_inode(inode, 0);
|
|
} else
|
|
spin_unlock(&inode->i_lock);
|
|
break;
|
|
case -NFS4ERR_OLD_STATEID:
|
|
spin_lock(&inode->i_lock);
|
|
lo = NFS_I(inode)->layout;
|
|
if (pnfs_layout_is_valid(lo) &&
|
|
nfs4_stateid_match_other(&data->args.stateid,
|
|
&lo->plh_stateid)) {
|
|
/* Do we need to delay before resending? */
|
|
if (!nfs4_stateid_is_newer(&lo->plh_stateid,
|
|
&data->args.stateid))
|
|
rpc_delay(task, HZ);
|
|
rpc_restart_call_prepare(task);
|
|
}
|
|
spin_unlock(&inode->i_lock);
|
|
break;
|
|
case -ENOTSUPP:
|
|
case -EOPNOTSUPP:
|
|
NFS_SERVER(inode)->caps &= ~NFS_CAP_LAYOUTSTATS;
|
|
}
|
|
}
|
|
|
|
static void
|
|
nfs42_layoutstat_release(void *calldata)
|
|
{
|
|
struct nfs42_layoutstat_data *data = calldata;
|
|
struct nfs42_layoutstat_devinfo *devinfo = data->args.devinfo;
|
|
int i;
|
|
|
|
for (i = 0; i < data->args.num_dev; i++) {
|
|
if (devinfo[i].ld_private.ops && devinfo[i].ld_private.ops->free)
|
|
devinfo[i].ld_private.ops->free(&devinfo[i].ld_private);
|
|
}
|
|
|
|
pnfs_put_layout_hdr(NFS_I(data->args.inode)->layout);
|
|
smp_mb__before_atomic();
|
|
clear_bit(NFS_INO_LAYOUTSTATS, &NFS_I(data->args.inode)->flags);
|
|
smp_mb__after_atomic();
|
|
nfs_iput_and_deactive(data->inode);
|
|
kfree(data->args.devinfo);
|
|
kfree(data);
|
|
}
|
|
|
|
static const struct rpc_call_ops nfs42_layoutstat_ops = {
|
|
.rpc_call_prepare = nfs42_layoutstat_prepare,
|
|
.rpc_call_done = nfs42_layoutstat_done,
|
|
.rpc_release = nfs42_layoutstat_release,
|
|
};
|
|
|
|
int nfs42_proc_layoutstats_generic(struct nfs_server *server,
|
|
struct nfs42_layoutstat_data *data)
|
|
{
|
|
struct rpc_message msg = {
|
|
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTSTATS],
|
|
.rpc_argp = &data->args,
|
|
.rpc_resp = &data->res,
|
|
};
|
|
struct rpc_task_setup task_setup = {
|
|
.rpc_client = server->client,
|
|
.rpc_message = &msg,
|
|
.callback_ops = &nfs42_layoutstat_ops,
|
|
.callback_data = data,
|
|
.flags = RPC_TASK_ASYNC,
|
|
};
|
|
struct rpc_task *task;
|
|
|
|
data->inode = nfs_igrab_and_active(data->args.inode);
|
|
if (!data->inode) {
|
|
nfs42_layoutstat_release(data);
|
|
return -EAGAIN;
|
|
}
|
|
nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0, 0);
|
|
task = rpc_run_task(&task_setup);
|
|
if (IS_ERR(task))
|
|
return PTR_ERR(task);
|
|
rpc_put_task(task);
|
|
return 0;
|
|
}
|
|
|
|
static struct nfs42_layouterror_data *
|
|
nfs42_alloc_layouterror_data(struct pnfs_layout_segment *lseg, gfp_t gfp_flags)
|
|
{
|
|
struct nfs42_layouterror_data *data;
|
|
struct inode *inode = lseg->pls_layout->plh_inode;
|
|
|
|
data = kzalloc(sizeof(*data), gfp_flags);
|
|
if (data) {
|
|
data->args.inode = data->inode = nfs_igrab_and_active(inode);
|
|
if (data->inode) {
|
|
data->lseg = pnfs_get_lseg(lseg);
|
|
if (data->lseg)
|
|
return data;
|
|
nfs_iput_and_deactive(data->inode);
|
|
}
|
|
kfree(data);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static void
|
|
nfs42_free_layouterror_data(struct nfs42_layouterror_data *data)
|
|
{
|
|
pnfs_put_lseg(data->lseg);
|
|
nfs_iput_and_deactive(data->inode);
|
|
kfree(data);
|
|
}
|
|
|
|
static void
|
|
nfs42_layouterror_prepare(struct rpc_task *task, void *calldata)
|
|
{
|
|
struct nfs42_layouterror_data *data = calldata;
|
|
struct inode *inode = data->inode;
|
|
struct nfs_server *server = NFS_SERVER(inode);
|
|
struct pnfs_layout_hdr *lo = data->lseg->pls_layout;
|
|
unsigned i;
|
|
|
|
spin_lock(&inode->i_lock);
|
|
if (!pnfs_layout_is_valid(lo)) {
|
|
spin_unlock(&inode->i_lock);
|
|
rpc_exit(task, 0);
|
|
return;
|
|
}
|
|
for (i = 0; i < data->args.num_errors; i++)
|
|
nfs4_stateid_copy(&data->args.errors[i].stateid,
|
|
&lo->plh_stateid);
|
|
spin_unlock(&inode->i_lock);
|
|
nfs4_setup_sequence(server->nfs_client, &data->args.seq_args,
|
|
&data->res.seq_res, task);
|
|
}
|
|
|
|
static void
|
|
nfs42_layouterror_done(struct rpc_task *task, void *calldata)
|
|
{
|
|
struct nfs42_layouterror_data *data = calldata;
|
|
struct inode *inode = data->inode;
|
|
struct pnfs_layout_hdr *lo = data->lseg->pls_layout;
|
|
|
|
if (!nfs4_sequence_done(task, &data->res.seq_res))
|
|
return;
|
|
|
|
switch (task->tk_status) {
|
|
case 0:
|
|
break;
|
|
case -NFS4ERR_BADHANDLE:
|
|
case -ESTALE:
|
|
pnfs_destroy_layout(NFS_I(inode));
|
|
break;
|
|
case -NFS4ERR_EXPIRED:
|
|
case -NFS4ERR_ADMIN_REVOKED:
|
|
case -NFS4ERR_DELEG_REVOKED:
|
|
case -NFS4ERR_STALE_STATEID:
|
|
case -NFS4ERR_BAD_STATEID:
|
|
spin_lock(&inode->i_lock);
|
|
if (pnfs_layout_is_valid(lo) &&
|
|
nfs4_stateid_match(&data->args.errors[0].stateid,
|
|
&lo->plh_stateid)) {
|
|
LIST_HEAD(head);
|
|
|
|
/*
|
|
* Mark the bad layout state as invalid, then retry
|
|
* with the current stateid.
|
|
*/
|
|
pnfs_mark_layout_stateid_invalid(lo, &head);
|
|
spin_unlock(&inode->i_lock);
|
|
pnfs_free_lseg_list(&head);
|
|
nfs_commit_inode(inode, 0);
|
|
} else
|
|
spin_unlock(&inode->i_lock);
|
|
break;
|
|
case -NFS4ERR_OLD_STATEID:
|
|
spin_lock(&inode->i_lock);
|
|
if (pnfs_layout_is_valid(lo) &&
|
|
nfs4_stateid_match_other(&data->args.errors[0].stateid,
|
|
&lo->plh_stateid)) {
|
|
/* Do we need to delay before resending? */
|
|
if (!nfs4_stateid_is_newer(&lo->plh_stateid,
|
|
&data->args.errors[0].stateid))
|
|
rpc_delay(task, HZ);
|
|
rpc_restart_call_prepare(task);
|
|
}
|
|
spin_unlock(&inode->i_lock);
|
|
break;
|
|
case -ENOTSUPP:
|
|
case -EOPNOTSUPP:
|
|
NFS_SERVER(inode)->caps &= ~NFS_CAP_LAYOUTERROR;
|
|
}
|
|
}
|
|
|
|
static void
|
|
nfs42_layouterror_release(void *calldata)
|
|
{
|
|
struct nfs42_layouterror_data *data = calldata;
|
|
|
|
nfs42_free_layouterror_data(data);
|
|
}
|
|
|
|
static const struct rpc_call_ops nfs42_layouterror_ops = {
|
|
.rpc_call_prepare = nfs42_layouterror_prepare,
|
|
.rpc_call_done = nfs42_layouterror_done,
|
|
.rpc_release = nfs42_layouterror_release,
|
|
};
|
|
|
|
int nfs42_proc_layouterror(struct pnfs_layout_segment *lseg,
|
|
const struct nfs42_layout_error *errors, size_t n)
|
|
{
|
|
struct inode *inode = lseg->pls_layout->plh_inode;
|
|
struct nfs42_layouterror_data *data;
|
|
struct rpc_task *task;
|
|
struct rpc_message msg = {
|
|
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTERROR],
|
|
};
|
|
struct rpc_task_setup task_setup = {
|
|
.rpc_message = &msg,
|
|
.callback_ops = &nfs42_layouterror_ops,
|
|
.flags = RPC_TASK_ASYNC,
|
|
};
|
|
unsigned int i;
|
|
|
|
if (!nfs_server_capable(inode, NFS_CAP_LAYOUTERROR))
|
|
return -EOPNOTSUPP;
|
|
if (n > NFS42_LAYOUTERROR_MAX)
|
|
return -EINVAL;
|
|
data = nfs42_alloc_layouterror_data(lseg, GFP_NOFS);
|
|
if (!data)
|
|
return -ENOMEM;
|
|
for (i = 0; i < n; i++) {
|
|
data->args.errors[i] = errors[i];
|
|
data->args.num_errors++;
|
|
data->res.num_errors++;
|
|
}
|
|
msg.rpc_argp = &data->args;
|
|
msg.rpc_resp = &data->res;
|
|
task_setup.callback_data = data;
|
|
task_setup.rpc_client = NFS_SERVER(inode)->client;
|
|
nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0, 0);
|
|
task = rpc_run_task(&task_setup);
|
|
if (IS_ERR(task))
|
|
return PTR_ERR(task);
|
|
rpc_put_task(task);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(nfs42_proc_layouterror);
|
|
|
|
static int _nfs42_proc_clone(struct rpc_message *msg, struct file *src_f,
|
|
struct file *dst_f, struct nfs_lock_context *src_lock,
|
|
struct nfs_lock_context *dst_lock, loff_t src_offset,
|
|
loff_t dst_offset, loff_t count)
|
|
{
|
|
struct inode *src_inode = file_inode(src_f);
|
|
struct inode *dst_inode = file_inode(dst_f);
|
|
struct nfs_server *server = NFS_SERVER(dst_inode);
|
|
struct nfs42_clone_args args = {
|
|
.src_fh = NFS_FH(src_inode),
|
|
.dst_fh = NFS_FH(dst_inode),
|
|
.src_offset = src_offset,
|
|
.dst_offset = dst_offset,
|
|
.count = count,
|
|
.dst_bitmask = server->cache_consistency_bitmask,
|
|
};
|
|
struct nfs42_clone_res res = {
|
|
.server = server,
|
|
};
|
|
int status;
|
|
|
|
msg->rpc_argp = &args;
|
|
msg->rpc_resp = &res;
|
|
|
|
status = nfs4_set_rw_stateid(&args.src_stateid, src_lock->open_context,
|
|
src_lock, FMODE_READ);
|
|
if (status)
|
|
return status;
|
|
|
|
status = nfs4_set_rw_stateid(&args.dst_stateid, dst_lock->open_context,
|
|
dst_lock, FMODE_WRITE);
|
|
if (status)
|
|
return status;
|
|
|
|
res.dst_fattr = nfs_alloc_fattr();
|
|
if (!res.dst_fattr)
|
|
return -ENOMEM;
|
|
|
|
status = nfs4_call_sync(server->client, server, msg,
|
|
&args.seq_args, &res.seq_res, 0);
|
|
if (status == 0)
|
|
status = nfs_post_op_update_inode(dst_inode, res.dst_fattr);
|
|
|
|
kfree(res.dst_fattr);
|
|
return status;
|
|
}
|
|
|
|
int nfs42_proc_clone(struct file *src_f, struct file *dst_f,
|
|
loff_t src_offset, loff_t dst_offset, loff_t count)
|
|
{
|
|
struct rpc_message msg = {
|
|
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLONE],
|
|
};
|
|
struct inode *inode = file_inode(src_f);
|
|
struct nfs_server *server = NFS_SERVER(file_inode(src_f));
|
|
struct nfs_lock_context *src_lock;
|
|
struct nfs_lock_context *dst_lock;
|
|
struct nfs4_exception src_exception = { };
|
|
struct nfs4_exception dst_exception = { };
|
|
int err, err2;
|
|
|
|
if (!nfs_server_capable(inode, NFS_CAP_CLONE))
|
|
return -EOPNOTSUPP;
|
|
|
|
src_lock = nfs_get_lock_context(nfs_file_open_context(src_f));
|
|
if (IS_ERR(src_lock))
|
|
return PTR_ERR(src_lock);
|
|
|
|
src_exception.inode = file_inode(src_f);
|
|
src_exception.state = src_lock->open_context->state;
|
|
|
|
dst_lock = nfs_get_lock_context(nfs_file_open_context(dst_f));
|
|
if (IS_ERR(dst_lock)) {
|
|
err = PTR_ERR(dst_lock);
|
|
goto out_put_src_lock;
|
|
}
|
|
|
|
dst_exception.inode = file_inode(dst_f);
|
|
dst_exception.state = dst_lock->open_context->state;
|
|
|
|
do {
|
|
err = _nfs42_proc_clone(&msg, src_f, dst_f, src_lock, dst_lock,
|
|
src_offset, dst_offset, count);
|
|
if (err == -ENOTSUPP || err == -EOPNOTSUPP) {
|
|
NFS_SERVER(inode)->caps &= ~NFS_CAP_CLONE;
|
|
err = -EOPNOTSUPP;
|
|
break;
|
|
}
|
|
|
|
err2 = nfs4_handle_exception(server, err, &src_exception);
|
|
err = nfs4_handle_exception(server, err, &dst_exception);
|
|
if (!err)
|
|
err = err2;
|
|
} while (src_exception.retry || dst_exception.retry);
|
|
|
|
nfs_put_lock_context(dst_lock);
|
|
out_put_src_lock:
|
|
nfs_put_lock_context(src_lock);
|
|
return err;
|
|
}
|