| Message ID | 20181019152932.32462-6-olga.kornievskaia@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | client-side support for "inter" SSC copy | expand |
Hi Olga, On Fri, 2018-10-19 at 11:29 -0400, Olga Kornievskaia wrote: > From: Olga Kornievskaia <kolga@netapp.com> > > 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@netapp.com> > Signed-off-by: Olga Kornievskaia <kolga@netapp.com> > --- > fs/nfs/nfs42.h | 3 +- > fs/nfs/nfs42proc.c | 91 +++++++++++++++++++++++ > fs/nfs/nfs42xdr.c | 181 > ++++++++++++++++++++++++++++++++++++++++++++++ > fs/nfs/nfs4file.c | 17 +++++ > fs/nfs/nfs4proc.c | 1 + > fs/nfs/nfs4xdr.c | 1 + > include/linux/nfs4.h | 1 + > include/linux/nfs_fs_sb.h | 1 + > include/linux/nfs_xdr.h | 16 ++++ > 9 files changed, 311 insertions(+), 1 deletion(-) > > diff --git a/fs/nfs/nfs42.h b/fs/nfs/nfs42.h > index 5abff4d..bcd0222 100644 > --- a/fs/nfs/nfs42.h > +++ b/fs/nfs/nfs42.h > @@ -21,7 +21,8 @@ > int nfs42_proc_layoutstats_generic(struct nfs_server *, > struct nfs42_layoutstat_data *); > int nfs42_proc_clone(struct file *, struct file *, loff_t, loff_t, loff_t); > - > +int nfs42_proc_copy_notify(struct file *, struct file *, > + struct nfs42_copy_notify_res *); Can you wrap this in a CONFIG_NFS_V4_2 check? Otherwise the compiler will complain that nfs42_copy_notify_res doesn't exist. Thanks, Anna > static inline bool nfs42_files_from_same_server(struct file *in, > struct file *out) > { > diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c > index ac5b784..b1c57a4 100644 > --- a/fs/nfs/nfs42proc.c > +++ b/fs/nfs/nfs42proc.c > @@ -3,6 +3,7 @@ > * 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> > @@ -15,10 +16,30 @@ > #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->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) > { > @@ -461,6 +482,76 @@ static int nfs42_do_offload_cancel_async(struct file > *dst, > 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 69f72ed..e6e7cbf 100644 > --- a/fs/nfs/nfs42xdr.c > +++ b/fs/nfs/nfs42xdr.c > @@ -29,6 +29,16 @@ > #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) > @@ -84,6 +94,12 @@ > #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 + \ > @@ -137,6 +153,25 @@ static void encode_allocate(struct xdr_stream *xdr, > encode_fallocate(xdr, args); > } > > +static void encode_nl4_server(struct xdr_stream *xdr, const 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.netid_len, > + ns->u.nl4_addr.netid); > + encode_string(xdr, ns->u.nl4_addr.addr_len, > + ns->u.nl4_addr.addr); > + break; > + default: > + WARN_ON_ONCE(1); > + } > +} > + > static void encode_copy(struct xdr_stream *xdr, > const struct nfs42_copy_args *args, > struct compound_hdr *hdr) > @@ -162,6 +197,15 @@ 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, > + const 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, > const struct nfs42_falloc_args *args, > struct compound_hdr *hdr) > @@ -298,6 +342,25 @@ 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, > + const void *data) > +{ > + const struct nfs42_copy_notify_args *args = data; > + 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, > @@ -416,6 +479,58 @@ 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->netid_len = dummy; > + memcpy(naddr->netid, dummy_str, naddr->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->addr_len = dummy; > + memcpy(naddr->addr, dummy_str, naddr->addr_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; > @@ -458,6 +573,46 @@ 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; > + int status, count; > + > + 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; > + > + count = be32_to_cpup(p); > + if (count > 1) > + pr_warn("NFS: %s: nsvr %d > Supported. Use first servers\n", > + __func__, count); > + > + status = decode_nl4_server(xdr, &res->cnr_src); > + if (unlikely(status)) > + goto out_overflow; > + 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); > @@ -585,6 +740,32 @@ 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, > + void *data) > +{ > + struct nfs42_copy_notify_res *res = data; > + 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/nfs4file.c b/fs/nfs/nfs4file.c > index 4288a6e..3a888f4 100644 > --- a/fs/nfs/nfs4file.c > +++ b/fs/nfs/nfs4file.c > @@ -133,12 +133,29 @@ 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; > + > + 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: > + kfree(cn_resp); > if (ret == -EAGAIN) > goto retry; > return ret; > diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c > index db84b4a..fec6e6b 100644 > --- a/fs/nfs/nfs4proc.c > +++ b/fs/nfs/nfs4proc.c > @@ -9692,6 +9692,7 @@ static bool nfs4_match_stateid(const nfs4_stateid *s1, > | NFS_CAP_ALLOCATE > | NFS_CAP_COPY > | NFS_CAP_OFFLOAD_CANCEL > + | NFS_CAP_COPY_NOTIFY > | NFS_CAP_DEALLOCATE > | NFS_CAP_SEEK > | NFS_CAP_LAYOUTSTATS > diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c > index b7bde12..2163900 100644 > --- a/fs/nfs/nfs4xdr.c > +++ b/fs/nfs/nfs4xdr.c > @@ -7790,6 +7790,7 @@ int nfs4_decode_dirent(struct xdr_stream *xdr, struct > nfs_entry *entry, > PROC42(CLONE, enc_clone, dec_clone), > PROC42(COPY, enc_copy, dec_copy), > PROC42(OFFLOAD_CANCEL, enc_offload_cancel, dec_offload_cancel), > + PROC42(COPY_NOTIFY, enc_copy_notify, dec_copy_notify), > PROC(LOOKUPP, enc_lookupp, dec_lookupp), > }; > > diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h > index 4d76f87..d80b25e 100644 > --- a/include/linux/nfs4.h > +++ b/include/linux/nfs4.h > @@ -537,6 +537,7 @@ enum { > NFSPROC4_CLNT_CLONE, > NFSPROC4_CLNT_COPY, > NFSPROC4_CLNT_OFFLOAD_CANCEL, > + NFSPROC4_CLNT_COPY_NOTIFY, > > NFSPROC4_CLNT_LOOKUPP, > }; > diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h > index 0fc0b91..e5d89ff 100644 > --- a/include/linux/nfs_fs_sb.h > +++ b/include/linux/nfs_fs_sb.h > @@ -261,5 +261,6 @@ struct nfs_server { > #define NFS_CAP_CLONE (1U << 23) > #define NFS_CAP_COPY (1U << 24) > #define NFS_CAP_OFFLOAD_CANCEL (1U << 25) > +#define NFS_CAP_COPY_NOTIFY (1U << 26) > > #endif > diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h > index 0e01625..dfc59bc 100644 > --- a/include/linux/nfs_xdr.h > +++ b/include/linux/nfs_xdr.h > @@ -1428,6 +1428,22 @@ 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; > + 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; > + struct nl4_server cnr_src; > +}; > + > struct nfs42_seek_args { > struct nfs4_sequence_args seq_args; >
On Tue, Oct 23, 2018 at 11:50 AM Schumaker, Anna <Anna.Schumaker@netapp.com> wrote: > > Hi Olga, > > On Fri, 2018-10-19 at 11:29 -0400, Olga Kornievskaia wrote: > > From: Olga Kornievskaia <kolga@netapp.com> > > > > 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@netapp.com> > > Signed-off-by: Olga Kornievskaia <kolga@netapp.com> > > --- > > fs/nfs/nfs42.h | 3 +- > > fs/nfs/nfs42proc.c | 91 +++++++++++++++++++++++ > > fs/nfs/nfs42xdr.c | 181 > > ++++++++++++++++++++++++++++++++++++++++++++++ > > fs/nfs/nfs4file.c | 17 +++++ > > fs/nfs/nfs4proc.c | 1 + > > fs/nfs/nfs4xdr.c | 1 + > > include/linux/nfs4.h | 1 + > > include/linux/nfs_fs_sb.h | 1 + > > include/linux/nfs_xdr.h | 16 ++++ > > 9 files changed, 311 insertions(+), 1 deletion(-) > > > > diff --git a/fs/nfs/nfs42.h b/fs/nfs/nfs42.h > > index 5abff4d..bcd0222 100644 > > --- a/fs/nfs/nfs42.h > > +++ b/fs/nfs/nfs42.h > > @@ -21,7 +21,8 @@ > > int nfs42_proc_layoutstats_generic(struct nfs_server *, > > struct nfs42_layoutstat_data *); > > int nfs42_proc_clone(struct file *, struct file *, loff_t, loff_t, loff_t); > > - > > +int nfs42_proc_copy_notify(struct file *, struct file *, > > + struct nfs42_copy_notify_res *); > > Can you wrap this in a CONFIG_NFS_V4_2 check? Otherwise the compiler will > complain that nfs42_copy_notify_res doesn't exist. Will take care of it. Thank you. > > Thanks, > Anna > > > static inline bool nfs42_files_from_same_server(struct file *in, > > struct file *out) > > { > > diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c > > index ac5b784..b1c57a4 100644 > > --- a/fs/nfs/nfs42proc.c > > +++ b/fs/nfs/nfs42proc.c > > @@ -3,6 +3,7 @@ > > * 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> > > @@ -15,10 +16,30 @@ > > #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->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) > > { > > @@ -461,6 +482,76 @@ static int nfs42_do_offload_cancel_async(struct file > > *dst, > > 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 69f72ed..e6e7cbf 100644 > > --- a/fs/nfs/nfs42xdr.c > > +++ b/fs/nfs/nfs42xdr.c > > @@ -29,6 +29,16 @@ > > #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) > > @@ -84,6 +94,12 @@ > > #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 + \ > > @@ -137,6 +153,25 @@ static void encode_allocate(struct xdr_stream *xdr, > > encode_fallocate(xdr, args); > > } > > > > +static void encode_nl4_server(struct xdr_stream *xdr, const 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.netid_len, > > + ns->u.nl4_addr.netid); > > + encode_string(xdr, ns->u.nl4_addr.addr_len, > > + ns->u.nl4_addr.addr); > > + break; > > + default: > > + WARN_ON_ONCE(1); > > + } > > +} > > + > > static void encode_copy(struct xdr_stream *xdr, > > const struct nfs42_copy_args *args, > > struct compound_hdr *hdr) > > @@ -162,6 +197,15 @@ 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, > > + const 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, > > const struct nfs42_falloc_args *args, > > struct compound_hdr *hdr) > > @@ -298,6 +342,25 @@ 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, > > + const void *data) > > +{ > > + const struct nfs42_copy_notify_args *args = data; > > + 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, > > @@ -416,6 +479,58 @@ 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->netid_len = dummy; > > + memcpy(naddr->netid, dummy_str, naddr->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->addr_len = dummy; > > + memcpy(naddr->addr, dummy_str, naddr->addr_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; > > @@ -458,6 +573,46 @@ 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; > > + int status, count; > > + > > + 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; > > + > > + count = be32_to_cpup(p); > > + if (count > 1) > > + pr_warn("NFS: %s: nsvr %d > Supported. Use first servers\n", > > + __func__, count); > > + > > + status = decode_nl4_server(xdr, &res->cnr_src); > > + if (unlikely(status)) > > + goto out_overflow; > > + 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); > > @@ -585,6 +740,32 @@ 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, > > + void *data) > > +{ > > + struct nfs42_copy_notify_res *res = data; > > + 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/nfs4file.c b/fs/nfs/nfs4file.c > > index 4288a6e..3a888f4 100644 > > --- a/fs/nfs/nfs4file.c > > +++ b/fs/nfs/nfs4file.c > > @@ -133,12 +133,29 @@ 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; > > + > > + 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: > > + kfree(cn_resp); > > if (ret == -EAGAIN) > > goto retry; > > return ret; > > diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c > > index db84b4a..fec6e6b 100644 > > --- a/fs/nfs/nfs4proc.c > > +++ b/fs/nfs/nfs4proc.c > > @@ -9692,6 +9692,7 @@ static bool nfs4_match_stateid(const nfs4_stateid *s1, > > | NFS_CAP_ALLOCATE > > | NFS_CAP_COPY > > | NFS_CAP_OFFLOAD_CANCEL > > + | NFS_CAP_COPY_NOTIFY > > | NFS_CAP_DEALLOCATE > > | NFS_CAP_SEEK > > | NFS_CAP_LAYOUTSTATS > > diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c > > index b7bde12..2163900 100644 > > --- a/fs/nfs/nfs4xdr.c > > +++ b/fs/nfs/nfs4xdr.c > > @@ -7790,6 +7790,7 @@ int nfs4_decode_dirent(struct xdr_stream *xdr, struct > > nfs_entry *entry, > > PROC42(CLONE, enc_clone, dec_clone), > > PROC42(COPY, enc_copy, dec_copy), > > PROC42(OFFLOAD_CANCEL, enc_offload_cancel, dec_offload_cancel), > > + PROC42(COPY_NOTIFY, enc_copy_notify, dec_copy_notify), > > PROC(LOOKUPP, enc_lookupp, dec_lookupp), > > }; > > > > diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h > > index 4d76f87..d80b25e 100644 > > --- a/include/linux/nfs4.h > > +++ b/include/linux/nfs4.h > > @@ -537,6 +537,7 @@ enum { > > NFSPROC4_CLNT_CLONE, > > NFSPROC4_CLNT_COPY, > > NFSPROC4_CLNT_OFFLOAD_CANCEL, > > + NFSPROC4_CLNT_COPY_NOTIFY, > > > > NFSPROC4_CLNT_LOOKUPP, > > }; > > diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h > > index 0fc0b91..e5d89ff 100644 > > --- a/include/linux/nfs_fs_sb.h > > +++ b/include/linux/nfs_fs_sb.h > > @@ -261,5 +261,6 @@ struct nfs_server { > > #define NFS_CAP_CLONE (1U << 23) > > #define NFS_CAP_COPY (1U << 24) > > #define NFS_CAP_OFFLOAD_CANCEL (1U << 25) > > +#define NFS_CAP_COPY_NOTIFY (1U << 26) > > > > #endif > > diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h > > index 0e01625..dfc59bc 100644 > > --- a/include/linux/nfs_xdr.h > > +++ b/include/linux/nfs_xdr.h > > @@ -1428,6 +1428,22 @@ 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; > > + 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; > > + struct nl4_server cnr_src; > > +}; > > + > > struct nfs42_seek_args { > > struct nfs4_sequence_args seq_args; > >
diff --git a/fs/nfs/nfs42.h b/fs/nfs/nfs42.h index 5abff4d..bcd0222 100644 --- a/fs/nfs/nfs42.h +++ b/fs/nfs/nfs42.h @@ -21,7 +21,8 @@ int nfs42_proc_layoutstats_generic(struct nfs_server *, struct nfs42_layoutstat_data *); int nfs42_proc_clone(struct file *, struct file *, loff_t, loff_t, loff_t); - +int nfs42_proc_copy_notify(struct file *, struct file *, + struct nfs42_copy_notify_res *); static inline bool nfs42_files_from_same_server(struct file *in, struct file *out) { diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c index ac5b784..b1c57a4 100644 --- a/fs/nfs/nfs42proc.c +++ b/fs/nfs/nfs42proc.c @@ -3,6 +3,7 @@ * 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> @@ -15,10 +16,30 @@ #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->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) { @@ -461,6 +482,76 @@ static int nfs42_do_offload_cancel_async(struct file *dst, 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 69f72ed..e6e7cbf 100644 --- a/fs/nfs/nfs42xdr.c +++ b/fs/nfs/nfs42xdr.c @@ -29,6 +29,16 @@ #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) @@ -84,6 +94,12 @@ #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 + \ @@ -137,6 +153,25 @@ static void encode_allocate(struct xdr_stream *xdr, encode_fallocate(xdr, args); } +static void encode_nl4_server(struct xdr_stream *xdr, const 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.netid_len, + ns->u.nl4_addr.netid); + encode_string(xdr, ns->u.nl4_addr.addr_len, + ns->u.nl4_addr.addr); + break; + default: + WARN_ON_ONCE(1); + } +} + static void encode_copy(struct xdr_stream *xdr, const struct nfs42_copy_args *args, struct compound_hdr *hdr) @@ -162,6 +197,15 @@ 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, + const 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, const struct nfs42_falloc_args *args, struct compound_hdr *hdr) @@ -298,6 +342,25 @@ 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, + const void *data) +{ + const struct nfs42_copy_notify_args *args = data; + 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, @@ -416,6 +479,58 @@ 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->netid_len = dummy; + memcpy(naddr->netid, dummy_str, naddr->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->addr_len = dummy; + memcpy(naddr->addr, dummy_str, naddr->addr_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; @@ -458,6 +573,46 @@ 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; + int status, count; + + 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; + + count = be32_to_cpup(p); + if (count > 1) + pr_warn("NFS: %s: nsvr %d > Supported. Use first servers\n", + __func__, count); + + status = decode_nl4_server(xdr, &res->cnr_src); + if (unlikely(status)) + goto out_overflow; + 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); @@ -585,6 +740,32 @@ 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, + void *data) +{ + struct nfs42_copy_notify_res *res = data; + 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/nfs4file.c b/fs/nfs/nfs4file.c index 4288a6e..3a888f4 100644 --- a/fs/nfs/nfs4file.c +++ b/fs/nfs/nfs4file.c @@ -133,12 +133,29 @@ 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; + + 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: + kfree(cn_resp); if (ret == -EAGAIN) goto retry; return ret; diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index db84b4a..fec6e6b 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -9692,6 +9692,7 @@ static bool nfs4_match_stateid(const nfs4_stateid *s1, | NFS_CAP_ALLOCATE | NFS_CAP_COPY | NFS_CAP_OFFLOAD_CANCEL + | NFS_CAP_COPY_NOTIFY | NFS_CAP_DEALLOCATE | NFS_CAP_SEEK | NFS_CAP_LAYOUTSTATS diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index b7bde12..2163900 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -7790,6 +7790,7 @@ int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, PROC42(CLONE, enc_clone, dec_clone), PROC42(COPY, enc_copy, dec_copy), PROC42(OFFLOAD_CANCEL, enc_offload_cancel, dec_offload_cancel), + PROC42(COPY_NOTIFY, enc_copy_notify, dec_copy_notify), PROC(LOOKUPP, enc_lookupp, dec_lookupp), }; diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h index 4d76f87..d80b25e 100644 --- a/include/linux/nfs4.h +++ b/include/linux/nfs4.h @@ -537,6 +537,7 @@ enum { NFSPROC4_CLNT_CLONE, NFSPROC4_CLNT_COPY, NFSPROC4_CLNT_OFFLOAD_CANCEL, + NFSPROC4_CLNT_COPY_NOTIFY, NFSPROC4_CLNT_LOOKUPP, }; diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index 0fc0b91..e5d89ff 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -261,5 +261,6 @@ struct nfs_server { #define NFS_CAP_CLONE (1U << 23) #define NFS_CAP_COPY (1U << 24) #define NFS_CAP_OFFLOAD_CANCEL (1U << 25) +#define NFS_CAP_COPY_NOTIFY (1U << 26) #endif diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 0e01625..dfc59bc 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1428,6 +1428,22 @@ 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; + 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; + struct nl4_server cnr_src; +}; + struct nfs42_seek_args { struct nfs4_sequence_args seq_args;