![Wenwen Wang](/assets/img/avatar_default.png)
In _nfs42_proc_copy(), 'res->commit_res.verf' is allocated through kzalloc() if 'args->sync' is true. In the following code, if 'res->synchronous' is false, handle_async_copy() will be invoked. If an error occurs during the invocation, the following code will not be executed and the error will be returned . However, the allocated 'res->commit_res.verf' is not deallocated, leading to a memory leak. This is also true if the invocation of process_copy_commit() returns an error. To fix the above leaks, redirect the execution to the 'out' label if an error is encountered. Signed-off-by: Wenwen Wang <wenwen@cs.uga.edu> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
1091 lines
28 KiB
C
1091 lines
28 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (c) 2014 Anna Schumaker <Anna.Schumaker@Netapp.com>
|
|
*/
|
|
#include <linux/fs.h>
|
|
#include <linux/sunrpc/addr.h>
|
|
#include <linux/sunrpc/sched.h>
|
|
#include <linux/nfs.h>
|
|
#include <linux/nfs3.h>
|
|
#include <linux/nfs4.h>
|
|
#include <linux/nfs_xdr.h>
|
|
#include <linux/nfs_fs.h>
|
|
#include "nfs4_fs.h"
|
|
#include "nfs42.h"
|
|
#include "iostat.h"
|
|
#include "pnfs.h"
|
|
#include "nfs4session.h"
|
|
#include "internal.h"
|
|
#include "delegation.h"
|
|
|
|
#define NFSDBG_FACILITY NFSDBG_PROC
|
|
static int nfs42_do_offload_cancel_async(struct file *dst, nfs4_stateid *std);
|
|
|
|
static void nfs42_set_netaddr(struct file *filep, struct nfs42_netaddr *naddr)
|
|
{
|
|
struct nfs_client *clp = (NFS_SERVER(file_inode(filep)))->nfs_client;
|
|
unsigned short port = 2049;
|
|
|
|
rcu_read_lock();
|
|
naddr->netid_len = scnprintf(naddr->netid,
|
|
sizeof(naddr->netid), "%s",
|
|
rpc_peeraddr2str(clp->cl_rpcclient,
|
|
RPC_DISPLAY_NETID));
|
|
naddr->addr_len = scnprintf(naddr->addr,
|
|
sizeof(naddr->addr),
|
|
"%s.%u.%u",
|
|
rpc_peeraddr2str(clp->cl_rpcclient,
|
|
RPC_DISPLAY_ADDR),
|
|
port >> 8, port & 255);
|
|
rcu_read_unlock();
|
|
}
|
|
|
|
static int _nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
|
|
struct nfs_lock_context *lock, loff_t offset, loff_t len)
|
|
{
|
|
struct inode *inode = file_inode(filep);
|
|
struct nfs_server *server = NFS_SERVER(inode);
|
|
struct nfs42_falloc_args args = {
|
|
.falloc_fh = NFS_FH(inode),
|
|
.falloc_offset = offset,
|
|
.falloc_length = len,
|
|
.falloc_bitmask = nfs4_fattr_bitmap,
|
|
};
|
|
struct nfs42_falloc_res res = {
|
|
.falloc_server = server,
|
|
};
|
|
int status;
|
|
|
|
msg->rpc_argp = &args;
|
|
msg->rpc_resp = &res;
|
|
|
|
status = nfs4_set_rw_stateid(&args.falloc_stateid, lock->open_context,
|
|
lock, FMODE_WRITE);
|
|
if (status) {
|
|
if (status == -EAGAIN)
|
|
status = -NFS4ERR_BAD_STATEID;
|
|
return status;
|
|
}
|
|
|
|
res.falloc_fattr = nfs_alloc_fattr();
|
|
if (!res.falloc_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(inode, res.falloc_fattr);
|
|
|
|
kfree(res.falloc_fattr);
|
|
return status;
|
|
}
|
|
|
|
static int nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
|
|
loff_t offset, loff_t len)
|
|
{
|
|
struct nfs_server *server = NFS_SERVER(file_inode(filep));
|
|
struct nfs4_exception exception = { };
|
|
struct nfs_lock_context *lock;
|
|
int 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_fallocate(msg, filep, lock, offset, len);
|
|
if (err == -ENOTSUPP) {
|
|
err = -EOPNOTSUPP;
|
|
break;
|
|
}
|
|
err = nfs4_handle_exception(server, err, &exception);
|
|
} while (exception.retry);
|
|
|
|
nfs_put_lock_context(lock);
|
|
return err;
|
|
}
|
|
|
|
int nfs42_proc_allocate(struct file *filep, loff_t offset, loff_t len)
|
|
{
|
|
struct rpc_message msg = {
|
|
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ALLOCATE],
|
|
};
|
|
struct inode *inode = file_inode(filep);
|
|
int err;
|
|
|
|
if (!nfs_server_capable(inode, NFS_CAP_ALLOCATE))
|
|
return -EOPNOTSUPP;
|
|
|
|
inode_lock(inode);
|
|
|
|
err = nfs42_proc_fallocate(&msg, filep, offset, len);
|
|
if (err == -EOPNOTSUPP)
|
|
NFS_SERVER(inode)->caps &= ~NFS_CAP_ALLOCATE;
|
|
|
|
inode_unlock(inode);
|
|
return err;
|
|
}
|
|
|
|
int nfs42_proc_deallocate(struct file *filep, loff_t offset, loff_t len)
|
|
{
|
|
struct rpc_message msg = {
|
|
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DEALLOCATE],
|
|
};
|
|
struct inode *inode = file_inode(filep);
|
|
int err;
|
|
|
|
if (!nfs_server_capable(inode, NFS_CAP_DEALLOCATE))
|
|
return -EOPNOTSUPP;
|
|
|
|
inode_lock(inode);
|
|
err = nfs_sync_inode(inode);
|
|
if (err)
|
|
goto out_unlock;
|
|
|
|
err = nfs42_proc_fallocate(&msg, filep, offset, len);
|
|
if (err == 0)
|
|
truncate_pagecache_range(inode, offset, (offset + len) -1);
|
|
if (err == -EOPNOTSUPP)
|
|
NFS_SERVER(inode)->caps &= ~NFS_CAP_DEALLOCATE;
|
|
out_unlock:
|
|
inode_unlock(inode);
|
|
return err;
|
|
}
|
|
|
|
static int handle_async_copy(struct nfs42_copy_res *res,
|
|
struct nfs_server *dst_server,
|
|
struct nfs_server *src_server,
|
|
struct file *src,
|
|
struct file *dst,
|
|
nfs4_stateid *src_stateid,
|
|
bool *restart)
|
|
{
|
|
struct nfs4_copy_state *copy, *tmp_copy;
|
|
int status = NFS4_OK;
|
|
bool found_pending = false;
|
|
struct nfs_open_context *dst_ctx = nfs_file_open_context(dst);
|
|
struct nfs_open_context *src_ctx = nfs_file_open_context(src);
|
|
|
|
copy = kzalloc(sizeof(struct nfs4_copy_state), GFP_NOFS);
|
|
if (!copy)
|
|
return -ENOMEM;
|
|
|
|
spin_lock(&dst_server->nfs_client->cl_lock);
|
|
list_for_each_entry(tmp_copy,
|
|
&dst_server->nfs_client->pending_cb_stateids,
|
|
copies) {
|
|
if (memcmp(&res->write_res.stateid, &tmp_copy->stateid,
|
|
NFS4_STATEID_SIZE))
|
|
continue;
|
|
found_pending = true;
|
|
list_del(&tmp_copy->copies);
|
|
break;
|
|
}
|
|
if (found_pending) {
|
|
spin_unlock(&dst_server->nfs_client->cl_lock);
|
|
kfree(copy);
|
|
copy = tmp_copy;
|
|
goto out;
|
|
}
|
|
|
|
memcpy(©->stateid, &res->write_res.stateid, NFS4_STATEID_SIZE);
|
|
init_completion(©->completion);
|
|
copy->parent_dst_state = dst_ctx->state;
|
|
copy->parent_src_state = src_ctx->state;
|
|
|
|
list_add_tail(©->copies, &dst_server->ss_copies);
|
|
spin_unlock(&dst_server->nfs_client->cl_lock);
|
|
|
|
if (dst_server != src_server) {
|
|
spin_lock(&src_server->nfs_client->cl_lock);
|
|
list_add_tail(©->src_copies, &src_server->ss_copies);
|
|
spin_unlock(&src_server->nfs_client->cl_lock);
|
|
}
|
|
|
|
status = wait_for_completion_interruptible(©->completion);
|
|
spin_lock(&dst_server->nfs_client->cl_lock);
|
|
list_del_init(©->copies);
|
|
spin_unlock(&dst_server->nfs_client->cl_lock);
|
|
if (dst_server != src_server) {
|
|
spin_lock(&src_server->nfs_client->cl_lock);
|
|
list_del_init(©->src_copies);
|
|
spin_unlock(&src_server->nfs_client->cl_lock);
|
|
}
|
|
if (status == -ERESTARTSYS) {
|
|
goto out_cancel;
|
|
} else if (copy->flags || copy->error == NFS4ERR_PARTNER_NO_AUTH) {
|
|
status = -EAGAIN;
|
|
*restart = true;
|
|
goto out_cancel;
|
|
}
|
|
out:
|
|
res->write_res.count = copy->count;
|
|
memcpy(&res->write_res.verifier, ©->verf, sizeof(copy->verf));
|
|
status = -copy->error;
|
|
|
|
out_free:
|
|
kfree(copy);
|
|
return status;
|
|
out_cancel:
|
|
nfs42_do_offload_cancel_async(dst, ©->stateid);
|
|
if (!nfs42_files_from_same_server(src, dst))
|
|
nfs42_do_offload_cancel_async(src, src_stateid);
|
|
goto out_free;
|
|
}
|
|
|
|
static int process_copy_commit(struct file *dst, loff_t pos_dst,
|
|
struct nfs42_copy_res *res)
|
|
{
|
|
struct nfs_commitres cres;
|
|
int status = -ENOMEM;
|
|
|
|
cres.verf = kzalloc(sizeof(struct nfs_writeverf), GFP_NOFS);
|
|
if (!cres.verf)
|
|
goto out;
|
|
|
|
status = nfs4_proc_commit(dst, pos_dst, res->write_res.count, &cres);
|
|
if (status)
|
|
goto out_free;
|
|
if (nfs_write_verifier_cmp(&res->write_res.verifier.verifier,
|
|
&cres.verf->verifier)) {
|
|
dprintk("commit verf differs from copy verf\n");
|
|
status = -EAGAIN;
|
|
}
|
|
out_free:
|
|
kfree(cres.verf);
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
static ssize_t _nfs42_proc_copy(struct file *src,
|
|
struct nfs_lock_context *src_lock,
|
|
struct file *dst,
|
|
struct nfs_lock_context *dst_lock,
|
|
struct nfs42_copy_args *args,
|
|
struct nfs42_copy_res *res,
|
|
struct nl4_server *nss,
|
|
nfs4_stateid *cnr_stateid,
|
|
bool *restart)
|
|
{
|
|
struct rpc_message msg = {
|
|
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COPY],
|
|
.rpc_argp = args,
|
|
.rpc_resp = res,
|
|
};
|
|
struct inode *dst_inode = file_inode(dst);
|
|
struct inode *src_inode = file_inode(src);
|
|
struct nfs_server *dst_server = NFS_SERVER(dst_inode);
|
|
struct nfs_server *src_server = NFS_SERVER(src_inode);
|
|
loff_t pos_src = args->src_pos;
|
|
loff_t pos_dst = args->dst_pos;
|
|
size_t count = args->count;
|
|
ssize_t status;
|
|
|
|
if (nss) {
|
|
args->cp_src = nss;
|
|
nfs4_stateid_copy(&args->src_stateid, cnr_stateid);
|
|
} else {
|
|
status = nfs4_set_rw_stateid(&args->src_stateid,
|
|
src_lock->open_context, src_lock, FMODE_READ);
|
|
if (status) {
|
|
if (status == -EAGAIN)
|
|
status = -NFS4ERR_BAD_STATEID;
|
|
return status;
|
|
}
|
|
}
|
|
status = nfs_filemap_write_and_wait_range(file_inode(src)->i_mapping,
|
|
pos_src, pos_src + (loff_t)count - 1);
|
|
if (status)
|
|
return status;
|
|
|
|
status = nfs4_set_rw_stateid(&args->dst_stateid, dst_lock->open_context,
|
|
dst_lock, FMODE_WRITE);
|
|
if (status) {
|
|
if (status == -EAGAIN)
|
|
status = -NFS4ERR_BAD_STATEID;
|
|
return status;
|
|
}
|
|
|
|
status = nfs_sync_inode(dst_inode);
|
|
if (status)
|
|
return status;
|
|
|
|
res->commit_res.verf = NULL;
|
|
if (args->sync) {
|
|
res->commit_res.verf =
|
|
kzalloc(sizeof(struct nfs_writeverf), GFP_NOFS);
|
|
if (!res->commit_res.verf)
|
|
return -ENOMEM;
|
|
}
|
|
set_bit(NFS_CLNT_SRC_SSC_COPY_STATE,
|
|
&src_lock->open_context->state->flags);
|
|
set_bit(NFS_CLNT_DST_SSC_COPY_STATE,
|
|
&dst_lock->open_context->state->flags);
|
|
|
|
status = nfs4_call_sync(dst_server->client, dst_server, &msg,
|
|
&args->seq_args, &res->seq_res, 0);
|
|
if (status == -ENOTSUPP)
|
|
dst_server->caps &= ~NFS_CAP_COPY;
|
|
if (status)
|
|
goto out;
|
|
|
|
if (args->sync &&
|
|
nfs_write_verifier_cmp(&res->write_res.verifier.verifier,
|
|
&res->commit_res.verf->verifier)) {
|
|
status = -EAGAIN;
|
|
goto out;
|
|
}
|
|
|
|
if (!res->synchronous) {
|
|
status = handle_async_copy(res, dst_server, src_server, src,
|
|
dst, &args->src_stateid, restart);
|
|
if (status)
|
|
goto out;
|
|
}
|
|
|
|
if ((!res->synchronous || !args->sync) &&
|
|
res->write_res.verifier.committed != NFS_FILE_SYNC) {
|
|
status = process_copy_commit(dst, pos_dst, res);
|
|
if (status)
|
|
goto out;
|
|
}
|
|
|
|
truncate_pagecache_range(dst_inode, pos_dst,
|
|
pos_dst + res->write_res.count);
|
|
|
|
status = res->write_res.count;
|
|
out:
|
|
if (args->sync)
|
|
kfree(res->commit_res.verf);
|
|
return status;
|
|
}
|
|
|
|
ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src,
|
|
struct file *dst, loff_t pos_dst, size_t count,
|
|
struct nl4_server *nss,
|
|
nfs4_stateid *cnr_stateid, bool sync)
|
|
{
|
|
struct nfs_server *server = NFS_SERVER(file_inode(dst));
|
|
struct nfs_lock_context *src_lock;
|
|
struct nfs_lock_context *dst_lock;
|
|
struct nfs42_copy_args args = {
|
|
.src_fh = NFS_FH(file_inode(src)),
|
|
.src_pos = pos_src,
|
|
.dst_fh = NFS_FH(file_inode(dst)),
|
|
.dst_pos = pos_dst,
|
|
.count = count,
|
|
.sync = sync,
|
|
};
|
|
struct nfs42_copy_res res;
|
|
struct nfs4_exception src_exception = {
|
|
.inode = file_inode(src),
|
|
.stateid = &args.src_stateid,
|
|
};
|
|
struct nfs4_exception dst_exception = {
|
|
.inode = file_inode(dst),
|
|
.stateid = &args.dst_stateid,
|
|
};
|
|
ssize_t err, err2;
|
|
bool restart = false;
|
|
|
|
src_lock = nfs_get_lock_context(nfs_file_open_context(src));
|
|
if (IS_ERR(src_lock))
|
|
return PTR_ERR(src_lock);
|
|
|
|
src_exception.state = src_lock->open_context->state;
|
|
|
|
dst_lock = nfs_get_lock_context(nfs_file_open_context(dst));
|
|
if (IS_ERR(dst_lock)) {
|
|
err = PTR_ERR(dst_lock);
|
|
goto out_put_src_lock;
|
|
}
|
|
|
|
dst_exception.state = dst_lock->open_context->state;
|
|
|
|
do {
|
|
inode_lock(file_inode(dst));
|
|
err = _nfs42_proc_copy(src, src_lock,
|
|
dst, dst_lock,
|
|
&args, &res,
|
|
nss, cnr_stateid, &restart);
|
|
inode_unlock(file_inode(dst));
|
|
|
|
if (err >= 0)
|
|
break;
|
|
if (err == -ENOTSUPP &&
|
|
nfs42_files_from_same_server(src, dst)) {
|
|
err = -EOPNOTSUPP;
|
|
break;
|
|
} else if (err == -EAGAIN) {
|
|
if (!restart) {
|
|
dst_exception.retry = 1;
|
|
continue;
|
|
}
|
|
break;
|
|
} else if (err == -NFS4ERR_OFFLOAD_NO_REQS && !args.sync) {
|
|
args.sync = true;
|
|
dst_exception.retry = 1;
|
|
continue;
|
|
} else if ((err == -ESTALE ||
|
|
err == -NFS4ERR_OFFLOAD_DENIED ||
|
|
err == -ENOTSUPP) &&
|
|
!nfs42_files_from_same_server(src, dst)) {
|
|
nfs42_do_offload_cancel_async(src, &args.src_stateid);
|
|
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;
|
|
}
|
|
|
|
struct nfs42_offloadcancel_data {
|
|
struct nfs_server *seq_server;
|
|
struct nfs42_offload_status_args args;
|
|
struct nfs42_offload_status_res res;
|
|
};
|
|
|
|
static void nfs42_offload_cancel_prepare(struct rpc_task *task, void *calldata)
|
|
{
|
|
struct nfs42_offloadcancel_data *data = calldata;
|
|
|
|
nfs4_setup_sequence(data->seq_server->nfs_client,
|
|
&data->args.osa_seq_args,
|
|
&data->res.osr_seq_res, task);
|
|
}
|
|
|
|
static void nfs42_offload_cancel_done(struct rpc_task *task, void *calldata)
|
|
{
|
|
struct nfs42_offloadcancel_data *data = calldata;
|
|
|
|
nfs41_sequence_done(task, &data->res.osr_seq_res);
|
|
if (task->tk_status &&
|
|
nfs4_async_handle_error(task, data->seq_server, NULL,
|
|
NULL) == -EAGAIN)
|
|
rpc_restart_call_prepare(task);
|
|
}
|
|
|
|
static void nfs42_free_offloadcancel_data(void *data)
|
|
{
|
|
kfree(data);
|
|
}
|
|
|
|
static const struct rpc_call_ops nfs42_offload_cancel_ops = {
|
|
.rpc_call_prepare = nfs42_offload_cancel_prepare,
|
|
.rpc_call_done = nfs42_offload_cancel_done,
|
|
.rpc_release = nfs42_free_offloadcancel_data,
|
|
};
|
|
|
|
static int nfs42_do_offload_cancel_async(struct file *dst,
|
|
nfs4_stateid *stateid)
|
|
{
|
|
struct nfs_server *dst_server = NFS_SERVER(file_inode(dst));
|
|
struct nfs42_offloadcancel_data *data = NULL;
|
|
struct nfs_open_context *ctx = nfs_file_open_context(dst);
|
|
struct rpc_task *task;
|
|
struct rpc_message msg = {
|
|
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OFFLOAD_CANCEL],
|
|
.rpc_cred = ctx->cred,
|
|
};
|
|
struct rpc_task_setup task_setup_data = {
|
|
.rpc_client = dst_server->client,
|
|
.rpc_message = &msg,
|
|
.callback_ops = &nfs42_offload_cancel_ops,
|
|
.workqueue = nfsiod_workqueue,
|
|
.flags = RPC_TASK_ASYNC,
|
|
};
|
|
int status;
|
|
|
|
if (!(dst_server->caps & NFS_CAP_OFFLOAD_CANCEL))
|
|
return -EOPNOTSUPP;
|
|
|
|
data = kzalloc(sizeof(struct nfs42_offloadcancel_data), GFP_NOFS);
|
|
if (data == NULL)
|
|
return -ENOMEM;
|
|
|
|
data->seq_server = dst_server;
|
|
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;
|
|
}
|
|
|
|
static 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) {
|
|
if (status == -EAGAIN)
|
|
status = -NFS4ERR_BAD_STATEID;
|
|
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) {
|
|
if (status == -EAGAIN)
|
|
status = -NFS4ERR_BAD_STATEID;
|
|
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) {
|
|
if (status == -EAGAIN)
|
|
status = -NFS4ERR_BAD_STATEID;
|
|
return status;
|
|
}
|
|
status = nfs4_set_rw_stateid(&args.dst_stateid, dst_lock->open_context,
|
|
dst_lock, FMODE_WRITE);
|
|
if (status) {
|
|
if (status == -EAGAIN)
|
|
status = -NFS4ERR_BAD_STATEID;
|
|
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;
|
|
}
|