* 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 "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)
{
.falloc_fh = NFS_FH(inode),
.falloc_offset = offset,
.falloc_length = len,
- .falloc_bitmask = server->cache_consistency_bitmask,
+ .falloc_bitmask = nfs4_fattr_bitmap,
};
struct nfs42_falloc_res res = {
.falloc_server = server,
}
static int handle_async_copy(struct nfs42_copy_res *res,
- struct nfs_server *server,
+ struct nfs_server *dst_server,
+ struct nfs_server *src_server,
struct file *src,
struct file *dst,
- nfs4_stateid *src_stateid)
+ 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 *ctx = nfs_file_open_context(dst);
+ 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(&server->nfs_client->cl_lock);
- list_for_each_entry(tmp_copy, &server->nfs_client->pending_cb_stateids,
+ 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))
break;
}
if (found_pending) {
- spin_unlock(&server->nfs_client->cl_lock);
+ 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_state = ctx->state;
+ copy->parent_dst_state = dst_ctx->state;
+ copy->parent_src_state = src_ctx->state;
- list_add_tail(©->copies, &server->ss_copies);
- spin_unlock(&server->nfs_client->cl_lock);
+ 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(&server->nfs_client->cl_lock);
+ spin_lock(&dst_server->nfs_client->cl_lock);
list_del_init(©->copies);
- spin_unlock(&server->nfs_client->cl_lock);
+ 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) {
+ } else if (copy->flags || copy->error == NFS4ERR_PARTNER_NO_AUTH) {
status = -EAGAIN;
+ *restart = true;
goto out_cancel;
}
out:
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);
- kfree(copy);
- return status;
+ 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 file *dst,
struct nfs_lock_context *dst_lock,
struct nfs42_copy_args *args,
- struct nfs42_copy_res *res)
+ 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_resp = res,
};
struct inode *dst_inode = file_inode(dst);
- struct nfs_server *server = NFS_SERVER(dst_inode);
+ 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;
- status = nfs4_set_rw_stateid(&args->src_stateid, src_lock->open_context,
- src_lock, FMODE_READ);
- if (status)
- return 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)
+ return status;
+ }
status = nfs_filemap_write_and_wait_range(file_inode(src)->i_mapping,
pos_src, pos_src + (loff_t)count - 1);
if (status)
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(server->client, server, &msg,
+ status = nfs4_call_sync(dst_server->client, dst_server, &msg,
&args->seq_args, &res->seq_res, 0);
if (status == -ENOTSUPP)
- server->caps &= ~NFS_CAP_COPY;
+ dst_server->caps &= ~NFS_CAP_COPY;
if (status)
goto out;
}
if (!res->synchronous) {
- status = handle_async_copy(res, server, src, dst,
- &args->src_stateid);
+ status = handle_async_copy(res, dst_server, src_server, src,
+ dst, &args->src_stateid, restart);
if (status)
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 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;
.dst_fh = NFS_FH(file_inode(dst)),
.dst_pos = pos_dst,
.count = count,
- .sync = false,
+ .sync = sync,
};
struct nfs42_copy_res res;
struct nfs4_exception src_exception = {
.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))
inode_lock(file_inode(dst));
err = _nfs42_proc_copy(src, src_lock,
dst, dst_lock,
- &args, &res);
+ &args, &res,
+ nss, cnr_stateid, &restart);
inode_unlock(file_inode(dst));
if (err >= 0)
break;
- if (err == -ENOTSUPP) {
+ if (err == -ENOTSUPP &&
+ nfs42_files_from_same_server(src, dst)) {
err = -EOPNOTSUPP;
break;
} else if (err == -EAGAIN) {
- dst_exception.retry = 1;
- continue;
+ 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);
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)
+ 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)
{
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