Try using the delegation stateid, then the open stateid.
Only NL4_NETATTR, No support for NL4_NAME and NL4_URL.
Allow only one source server address to be returned for now.
Signed-off-by: Andy Adamson <andros@xxxxxxxxxx>
Signed-off-by: Olga Kornievskaia <kolga@xxxxxxxxxx>
---
fs/nfs/nfs42.h | 2 +
fs/nfs/nfs42proc.c | 91 +++++++++++++++++++++++
fs/nfs/nfs42xdr.c | 186 ++++++++++++++++++++++++++++++++++++++++++++++
fs/nfs/nfs4_fs.h | 1 +
fs/nfs/nfs4file.c | 28 +++++++
fs/nfs/nfs4proc.c | 1 +
fs/nfs/nfs4state.c | 2 +-
fs/nfs/nfs4xdr.c | 1 +
include/linux/nfs4.h | 1 +
include/linux/nfs_fs_sb.h | 1 +
include/linux/nfs_xdr.h | 18 +++++
11 files changed, 331 insertions(+), 1 deletion(-)
diff --git a/fs/nfs/nfs42.h b/fs/nfs/nfs42.h
index 54b9941..a0d6d45 100644
--- a/fs/nfs/nfs42.h
+++ b/fs/nfs/nfs42.h
@@ -22,5 +22,7 @@ int nfs42_proc_layoutstats_generic(struct nfs_server *,
int nfs42_proc_clone(struct file *, struct file *, loff_t, loff_t, loff_t);
int nfs42_proc_offload_status(struct file *, nfs4_stateid *,
struct nfs42_offload_status_res *);
+int nfs42_proc_copy_notify(struct file *, struct file *,
+ struct nfs42_copy_notify_res *);
#endif /* CONFIG_NFS_V4_2) */
#endif /* __LINUX_FS_NFS_NFS4_2_H */
diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c
index e145479..d133533 100644
--- a/fs/nfs/nfs42proc.c
+++ b/fs/nfs/nfs42proc.c
@@ -2,6 +2,7 @@
* Copyright (c) 2014 Anna Schumaker <Anna.Schumaker@xxxxxxxxxx>
*/
#include <linux/fs.h>
+#include <linux/sunrpc/addr.h>
#include <linux/sunrpc/sched.h>
#include <linux/nfs.h>
#include <linux/nfs3.h>
@@ -14,10 +15,30 @@
#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->na_netid_len = scnprintf(naddr->na_netid,
+ sizeof(naddr->na_netid), "%s",
+ rpc_peeraddr2str(clp->cl_rpcclient,
+ RPC_DISPLAY_NETID));
+ naddr->na_uaddr_len = scnprintf(naddr->na_uaddr,
+ sizeof(naddr->na_uaddr),
+ "%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)
{
@@ -481,6 +502,76 @@ int nfs42_proc_offload_status(struct file *dst, nfs4_stateid *stateid,
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)
{
diff --git a/fs/nfs/nfs42xdr.c b/fs/nfs/nfs42xdr.c
index f507fe4..ae84bae 100644
--- a/fs/nfs/nfs42xdr.c
+++ b/fs/nfs/nfs42xdr.c
@@ -33,6 +33,16 @@
#define encode_offload_cancel_maxsz (op_encode_hdr_maxsz + \
XDR_QUADLEN(NFS4_STATEID_SIZE))
#define decode_offload_cancel_maxsz (op_decode_hdr_maxsz)
+#define encode_copy_notify_maxsz (op_encode_hdr_maxsz + \
+ XDR_QUADLEN(NFS4_STATEID_SIZE) + \
+ 1 + /* nl4_type */ \
+ 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT))
+#define decode_copy_notify_maxsz (op_decode_hdr_maxsz + \
+ 3 + /* cnr_lease_time */\
+ XDR_QUADLEN(NFS4_STATEID_SIZE) + \
+ 1 + /* Support 1 cnr_source_server */\
+ 1 + /* nl4_type */ \
+ 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT))
#define encode_deallocate_maxsz (op_encode_hdr_maxsz + \
encode_fallocate_maxsz)
#define decode_deallocate_maxsz (op_decode_hdr_maxsz)
@@ -94,6 +104,12 @@
#define NFS4_dec_offload_cancel_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_offload_cancel_maxsz)
+#define NFS4_enc_copy_notify_sz (compound_encode_hdr_maxsz + \
+ encode_putfh_maxsz + \
+ encode_copy_notify_maxsz)
+#define NFS4_dec_copy_notify_sz (compound_decode_hdr_maxsz + \
+ decode_putfh_maxsz + \
+ decode_copy_notify_maxsz)
#define NFS4_enc_deallocate_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_deallocate_maxsz + \
@@ -147,6 +163,25 @@ static void encode_allocate(struct xdr_stream *xdr,
encode_fallocate(xdr, args);
}
+static void encode_nl4_server(struct xdr_stream *xdr, struct nl4_server *ns)
+{
+ encode_uint32(xdr, ns->nl4_type);
+ switch (ns->nl4_type) {
+ case NL4_NAME:
+ case NL4_URL:
+ encode_string(xdr, ns->u.nl4_str_sz, ns->u.nl4_str);
+ break;
+ case NL4_NETADDR:
+ encode_string(xdr, ns->u.nl4_addr.na_netid_len,
+ ns->u.nl4_addr.na_netid);
+ encode_string(xdr, ns->u.nl4_addr.na_uaddr_len,
+ ns->u.nl4_addr.na_uaddr);
+ break;
+ default:
+ WARN_ON_ONCE(1);
+ }
+}
+
static void encode_copy(struct xdr_stream *xdr,
struct nfs42_copy_args *args,
struct compound_hdr *hdr)
@@ -180,6 +215,15 @@ static void encode_offload_cancel(struct xdr_stream *xdr,
encode_nfs4_stateid(xdr, &args->osa_stateid);
}
+static void encode_copy_notify(struct xdr_stream *xdr,
+ struct nfs42_copy_notify_args *args,
+ struct compound_hdr *hdr)
+{
+ encode_op_hdr(xdr, OP_COPY_NOTIFY, decode_copy_notify_maxsz, hdr);
+ encode_nfs4_stateid(xdr, &args->cna_src_stateid);
+ encode_nl4_server(xdr, &args->cna_dst);
+}
+
static void encode_deallocate(struct xdr_stream *xdr,
struct nfs42_falloc_args *args,
struct compound_hdr *hdr)
@@ -331,6 +375,24 @@ static void nfs4_xdr_enc_offload_cancel(struct rpc_rqst *req,
}
/*
+ * Encode COPY_NOTIFY request
+ */
+static void nfs4_xdr_enc_copy_notify(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs42_copy_notify_args *args)
+{
+ struct compound_hdr hdr = {
+ .minorversion = nfs4_xdr_minorversion(&args->cna_seq_args),
+ };
+
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->cna_seq_args, &hdr);
+ encode_putfh(xdr, args->cna_src_fh, &hdr);
+ encode_copy_notify(xdr, args, &hdr);
+ encode_nops(&hdr);
+}
+
+/*
* Encode DEALLOCATE request
*/
static void nfs4_xdr_enc_deallocate(struct rpc_rqst *req,
@@ -445,6 +507,58 @@ static int decode_write_response(struct xdr_stream *xdr,
return -EIO;
}
+static int decode_nl4_server(struct xdr_stream *xdr, struct nl4_server *ns)
+{
+ struct nfs42_netaddr *naddr;
+ uint32_t dummy;
+ char *dummy_str;
+ __be32 *p;
+ int status;
+
+ /* nl_type */
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(!p))
+ return -EIO;
+ ns->nl4_type = be32_to_cpup(p);
+ switch (ns->nl4_type) {
+ case NL4_NAME:
+ case NL4_URL:
+ status = decode_opaque_inline(xdr, &dummy, &dummy_str);
+ if (unlikely(status))
+ return status;
+ if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
+ return -EIO;
+ memcpy(&ns->u.nl4_str, dummy_str, dummy);
+ ns->u.nl4_str_sz = dummy;
+ break;
+ case NL4_NETADDR:
+ naddr = &ns->u.nl4_addr;
+
+ /* netid string */
+ status = decode_opaque_inline(xdr, &dummy, &dummy_str);
+ if (unlikely(status))
+ return status;
+ if (unlikely(dummy > RPCBIND_MAXNETIDLEN))
+ return -EIO;
+ naddr->na_netid_len = dummy;
+ memcpy(naddr->na_netid, dummy_str, naddr->na_netid_len);
+
+ /* uaddr string */
+ status = decode_opaque_inline(xdr, &dummy, &dummy_str);
+ if (unlikely(status))
+ return status;
+ if (unlikely(dummy > RPCBIND_MAXUADDRLEN))
+ return -EIO;
+ naddr->na_uaddr_len = dummy;
+ memcpy(naddr->na_uaddr, dummy_str, naddr->na_uaddr_len);
+ break;
+ default:
+ WARN_ON_ONCE(1);
+ return -EIO;
+ }
+ return 0;
+}
+
static int decode_copy_requirements(struct xdr_stream *xdr,
struct nfs42_copy_res *res) {
__be32 *p;
@@ -512,6 +626,53 @@ static int decode_offload_cancel(struct xdr_stream *xdr,
return decode_op_hdr(xdr, OP_OFFLOAD_CANCEL);
}
+static int decode_copy_notify(struct xdr_stream *xdr,
+ struct nfs42_copy_notify_res *res)
+{
+ __be32 *p;
+ struct nl4_server *ns;
+ int status, i;
+
+ status = decode_op_hdr(xdr, OP_COPY_NOTIFY);
+ if (status)
+ return status;
+ /* cnr_lease_time */
+ p = xdr_inline_decode(xdr, 12);
+ if (unlikely(!p))
+ goto out_overflow;
+ p = xdr_decode_hyper(p, &res->cnr_lease_time.seconds);
+ res->cnr_lease_time.nseconds = be32_to_cpup(p);
+
+ status = decode_opaque_fixed(xdr, &res->cnr_stateid, NFS4_STATEID_SIZE);
+ if (unlikely(status))
+ goto out_overflow;
+
+ /* number of source addresses */
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(!p))
+ goto out_overflow;
+
+ res->cnr_src.nl_nsvr = be32_to_cpup(p);
+ if (res->cnr_src.nl_nsvr > NFS42_MAX_SSC_SRC) {
+ pr_warn("NFS: %s: nsvr %d > Supported. Use first %d servers\n",
+ __func__, res->cnr_src.nl_nsvr, NFS42_MAX_SSC_SRC);
+ res->cnr_src.nl_nsvr = NFS42_MAX_SSC_SRC;
+ }
+
+ ns = res->cnr_src.nl_svr;
+ for (i = 0; i < res->cnr_src.nl_nsvr; i++) {
+ status = decode_nl4_server(xdr, ns);
+ if (unlikely(status))
+ goto out_overflow;
+ ns++;
+ }
+ return 0;
+
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
static int decode_deallocate(struct xdr_stream *xdr, struct nfs42_falloc_res *res)
{
return decode_op_hdr(xdr, OP_DEALLOCATE);
@@ -661,6 +822,31 @@ static int nfs4_xdr_dec_offload_cancel(struct rpc_rqst *rqstp,
}
/*
+ * Decode COPY_NOTIFY response
+ */
+static int nfs4_xdr_dec_copy_notify(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
+ struct nfs42_copy_notify_res *res)
+{
+ struct compound_hdr hdr;
+ int status;
+
+ status = decode_compound_hdr(xdr, &hdr);
+ if (status)
+ goto out;
+ status = decode_sequence(xdr, &res->cnr_seq_res, rqstp);
+ if (status)
+ goto out;
+ status = decode_putfh(xdr);
+ if (status)
+ goto out;
+ status = decode_copy_notify(xdr, res);
+
+out:
+ return status;
+}
+
+/*
* Decode DEALLOCATE request
*/
static int nfs4_xdr_dec_deallocate(struct rpc_rqst *rqstp,
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index 54e8778..70fa0e4 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -453,6 +453,7 @@ extern void nfs41_handle_server_scope(struct nfs_client *,
extern int nfs4_select_rw_stateid(struct nfs4_state *, fmode_t,
const struct nfs_lock_context *, nfs4_stateid *,
struct rpc_cred **);
+extern void nfs4_copy_open_stateid(nfs4_stateid *, struct nfs4_state *);
extern struct nfs_seqid *nfs_alloc_seqid(struct nfs_seqid_counter *counter, gfp_t gfp_mask);
extern int nfs_wait_on_sequence(struct nfs_seqid *seqid, struct rpc_task *task);
diff --git a/fs/nfs/nfs4file.c b/fs/nfs/nfs4file.c
index 881b819..b7b8c47 100644
--- a/fs/nfs/nfs4file.c
+++ b/fs/nfs/nfs4file.c
@@ -133,12 +133,40 @@ static ssize_t nfs4_copy_file_range(struct file *file_in, loff_t pos_in,
struct file *file_out, loff_t pos_out,
size_t count, unsigned int flags)
{
+ struct nfs42_copy_notify_res *cn_resp = NULL;
ssize_t ret;
if (file_inode(file_in) == file_inode(file_out))
return -EINVAL;
retry:
+ if (nfs42_files_from_same_server(file_in, file_out)) { /* Intra-ssc */
+ if (file_in->f_op != file_out->f_op)
+ return -EXDEV;
+ } else { /* Inter-ssc */
+ cn_resp = kzalloc(sizeof(struct nfs42_copy_notify_res),
+ GFP_NOFS);
+ if (unlikely(cn_resp == NULL))
+ return -ENOMEM;
+
+ cn_resp->cnr_src.nl_svr = kzalloc(NFS42_MAX_SSC_SRC *
+ sizeof(struct nl4_server),
+ GFP_NOFS);
+ if (unlikely(cn_resp->cnr_src.nl_svr == NULL)) {
+ kfree(cn_resp);
+ return -ENOMEM;
+ }
+
+ ret = nfs42_proc_copy_notify(file_in, file_out, cn_resp);
+ if (ret)
+ goto out;
+ }
ret = nfs42_proc_copy(file_in, pos_in, file_out, pos_out, count);
+
+out:
+ if (cn_resp) {
+ kfree(cn_resp->cnr_src.nl_svr);
+ kfree(cn_resp);
+ }
if (ret == -EAGAIN)
goto retry;
return ret;
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index fdb6b76..94913fd 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -9232,6 +9232,7 @@ static bool nfs4_match_stateid(const nfs4_stateid *s1,
| NFS_CAP_COPY
| NFS_CAP_OFFLOAD_STATUS
| NFS_CAP_OFFLOAD_CANCEL
+ | NFS_CAP_COPY_NOTIFY
| NFS_CAP_DEALLOCATE
| NFS_CAP_SEEK
| NFS_CAP_LAYOUTSTATS
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 81f9d52..f640050 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -979,7 +979,7 @@ static int nfs4_copy_lock_stateid(nfs4_stateid *dst,
return ret;
}
-static void nfs4_copy_open_stateid(nfs4_stateid *dst, struct nfs4_state *state)
+void nfs4_copy_open_stateid(nfs4_stateid *dst, struct nfs4_state *state)
{
const nfs4_stateid *src;
int seq;
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 9b66053..8c72bb6 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -7563,6 +7563,7 @@ struct rpc_procinfo nfs4_procedures[] = {
PROC(COPY, enc_copy, dec_copy),
PROC(OFFLOAD_STATUS, enc_offload_status, dec_offload_status),
PROC(OFFLOAD_CANCEL, enc_offload_cancel, dec_offload_cancel),
+ PROC(COPY_NOTIFY, enc_copy_notify, dec_copy_notify),
#endif /* CONFIG_NFS_V4_2 */
};
diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h
index 4179c78..5aa36ac 100644
--- a/include/linux/nfs4.h
+++ b/include/linux/nfs4.h
@@ -526,6 +526,7 @@ enum {
NFSPROC4_CLNT_COPY,
NFSPROC4_CLNT_OFFLOAD_STATUS,
NFSPROC4_CLNT_OFFLOAD_CANCEL,
+ NFSPROC4_CLNT_COPY_NOTIFY,
};
/* nfs41 types */
diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
index 2b0397d..7099855 100644
--- a/include/linux/nfs_fs_sb.h
+++ b/include/linux/nfs_fs_sb.h
@@ -254,5 +254,6 @@ struct nfs_server {
#define NFS_CAP_COPY (1U << 24)
#define NFS_CAP_OFFLOAD_STATUS (1U << 25)
#define NFS_CAP_OFFLOAD_CANCEL (1U << 26)
+#define NFS_CAP_COPY_NOTIFY (1U << 27)
#endif
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 4875928..300289b 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -1400,6 +1400,24 @@ struct nfs42_offload_status_res {
int osr_status;
};
+struct nfs42_copy_notify_args {
+ struct nfs4_sequence_args cna_seq_args;
+
+ struct nfs_fh *cna_src_fh;
+ nfs4_stateid cna_src_stateid;
+ /* cna_destiniation_server */
+ struct nl4_server cna_dst;
+};
+
+struct nfs42_copy_notify_res {
+ struct nfs4_sequence_res cnr_seq_res;
+
+ struct nfstime4 cnr_lease_time;
+ nfs4_stateid cnr_stateid;
+ /* cnr_source_server, for now, always 1 */
+ struct nl4_servers cnr_src;
+};
+
struct nfs42_seek_args {
struct nfs4_sequence_args seq_args;
--
1.8.3.1
--
To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
