diff options
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/nfs42.h | 15 | ||||
| -rw-r--r-- | fs/nfs/nfs42proc.c | 199 | ||||
| -rw-r--r-- | fs/nfs/nfs42xdr.c | 190 | ||||
| -rw-r--r-- | fs/nfs/nfs4_fs.h | 11 | ||||
| -rw-r--r-- | fs/nfs/nfs4client.c | 2 | ||||
| -rw-r--r-- | fs/nfs/nfs4file.c | 139 | ||||
| -rw-r--r-- | fs/nfs/nfs4proc.c | 7 | ||||
| -rw-r--r-- | fs/nfs/nfs4state.c | 40 | ||||
| -rw-r--r-- | fs/nfs/nfs4xdr.c | 1 |
9 files changed, 558 insertions, 46 deletions
diff --git a/fs/nfs/nfs42.h b/fs/nfs/nfs42.h index 901cca7542f9..c891af949886 100644 --- a/fs/nfs/nfs42.h +++ b/fs/nfs/nfs42.h @@ -13,8 +13,10 @@ #define PNFS_LAYOUTSTATS_MAXDEV (4) /* nfs4.2proc.c */ +#ifdef CONFIG_NFS_V4_2 int nfs42_proc_allocate(struct file *, loff_t, loff_t); -ssize_t nfs42_proc_copy(struct file *, loff_t, struct file *, loff_t, size_t); +ssize_t nfs42_proc_copy(struct file *, loff_t, struct file *, loff_t, size_t, + struct nl4_server *, nfs4_stateid *, bool); int nfs42_proc_deallocate(struct file *, loff_t, loff_t); loff_t nfs42_proc_llseek(struct file *, loff_t, int); int nfs42_proc_layoutstats_generic(struct nfs_server *, @@ -23,5 +25,16 @@ int nfs42_proc_clone(struct file *, struct file *, loff_t, loff_t, loff_t); int nfs42_proc_layouterror(struct pnfs_layout_segment *lseg, const struct nfs42_layout_error *errors, size_t n); +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) +{ + struct nfs_client *c_in = (NFS_SERVER(file_inode(in)))->nfs_client; + struct nfs_client *c_out = (NFS_SERVER(file_inode(out)))->nfs_client; + return nfs4_check_serverowner_major_id(c_in->cl_serverowner, + c_out->cl_serverowner); +} +#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 5196bfa7894d..aab6b7b6a24a 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) { @@ -132,22 +153,26 @@ out_unlock: } 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)) @@ -157,7 +182,7 @@ static int handle_async_copy(struct nfs42_copy_res *res, 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; @@ -165,19 +190,32 @@ static int handle_async_copy(struct nfs42_copy_res *res, 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: @@ -185,12 +223,14 @@ 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, @@ -222,7 +262,10 @@ static ssize_t _nfs42_proc_copy(struct file *src, 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], @@ -230,17 +273,23 @@ static ssize_t _nfs42_proc_copy(struct file *src, .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) @@ -262,13 +311,15 @@ static ssize_t _nfs42_proc_copy(struct file *src, 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; @@ -280,8 +331,8 @@ static ssize_t _nfs42_proc_copy(struct file *src, } 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; } @@ -304,8 +355,9 @@ out: } 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; @@ -316,7 +368,7 @@ ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src, .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 = { @@ -328,6 +380,7 @@ ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src, .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)) @@ -347,21 +400,33 @@ ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src, 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); @@ -459,6 +524,76 @@ 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 aed865a84629..c03f3246d6c5 100644 --- a/fs/nfs/nfs42xdr.c +++ b/fs/nfs/nfs42xdr.c @@ -21,7 +21,10 @@ #define encode_copy_maxsz (op_encode_hdr_maxsz + \ XDR_QUADLEN(NFS4_STATEID_SIZE) + \ XDR_QUADLEN(NFS4_STATEID_SIZE) + \ - 2 + 2 + 2 + 1 + 1 + 1) + 2 + 2 + 2 + 1 + 1 + 1 +\ + 1 + /* One cnr_source_server */\ + 1 + /* nl4_type */ \ + 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT)) #define decode_copy_maxsz (op_decode_hdr_maxsz + \ NFS42_WRITE_RES_SIZE + \ 1 /* cr_consecutive */ + \ @@ -29,6 +32,16 @@ #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) @@ -99,6 +112,12 @@ decode_sequence_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_sequence_maxsz + \ encode_putfh_maxsz + \ @@ -166,6 +185,26 @@ 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) @@ -180,7 +219,12 @@ static void encode_copy(struct xdr_stream *xdr, encode_uint32(xdr, 1); /* consecutive = true */ encode_uint32(xdr, args->sync); - encode_uint32(xdr, 0); /* src server list */ + if (args->cp_src == NULL) { /* intra-ssc */ + encode_uint32(xdr, 0); /* no src server list */ + return; + } + encode_uint32(xdr, 1); /* supporting 1 server */ + encode_nl4_server(xdr, args->cp_src); } static void encode_offload_cancel(struct xdr_stream *xdr, @@ -191,6 +235,15 @@ 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) @@ -355,6 +408,25 @@ 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, @@ -490,6 +562,58 @@ static int decode_write_response(struct xdr_stream *xdr, return decode_verifier(xdr, &res->verifier.verifier); } +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; @@ -529,6 +653,42 @@ 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)) + return -EIO; + 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)) + return -EIO; + + /* number of source addresses */ + p = xdr_inline_decode(xdr, 4); + if (unlikely(!p)) + return -EIO; + + 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)) + return -EIO; + return 0; +} + static int decode_deallocate(struct xdr_stream *xdr, struct nfs42_falloc_res *res) { return decode_op_hdr(xdr, OP_DEALLOCATE); @@ -657,6 +817,32 @@ out: } /* + * 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/nfs4_fs.h b/fs/nfs/nfs4_fs.h index 40ab5540c2ae..326463651921 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -168,6 +168,8 @@ enum { NFS_STATE_CHANGE_WAIT, /* A state changing operation is outstanding */ #ifdef CONFIG_NFS_V4_2 NFS_CLNT_DST_SSC_COPY_STATE, /* dst server open state on client*/ + NFS_CLNT_SRC_SSC_COPY_STATE, /* src server open state on client*/ + NFS_SRV_SSC_COPY_STATE, /* ssc state on the dst server */ #endif /* CONFIG_NFS_V4_2 */ }; @@ -311,6 +313,13 @@ extern int nfs4_set_rw_stateid(nfs4_stateid *stateid, const struct nfs_open_context *ctx, const struct nfs_lock_context *l_ctx, fmode_t fmode); +extern int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, + struct nfs_fattr *fattr, struct nfs4_label *label, + struct inode *inode); +extern int update_open_stateid(struct nfs4_state *state, + const nfs4_stateid *open_stateid, + const nfs4_stateid *deleg_stateid, + fmode_t fmode); extern int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo); @@ -457,6 +466,8 @@ int nfs41_discover_server_trunking(struct nfs_client *clp, struct nfs_client **, const struct cred *); extern void nfs4_schedule_session_recovery(struct nfs4_session *, int); extern void nfs41_notify_server(struct nfs_client *); +bool nfs4_check_serverowner_major_id(struct nfs41_server_owner *o1, + struct nfs41_server_owner *o2); #else static inline void nfs4_schedule_session_recovery(struct nfs4_session *session, int err) { diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c index abd5af77fe94..460d6251c405 100644 --- a/fs/nfs/nfs4client.c +++ b/fs/nfs/nfs4client.c @@ -629,7 +629,7 @@ out: /* * Returns true if the server major ids match */ -static bool +bool nfs4_check_serverowner_major_id(struct nfs41_server_owner *o1, struct nfs41_server_owner *o2) { diff --git a/fs/nfs/nfs4file.c b/fs/nfs/nfs4file.c index 339663d04bf8..e97813b15e23 100644 --- a/fs/nfs/nfs4file.c +++ b/fs/nfs/nfs4file.c @@ -8,6 +8,7 @@ #include <linux/file.h> #include <linux/falloc.h> #include <linux/nfs_fs.h> +#include <linux/file.h> #include "delegation.h" #include "internal.h" #include "iostat.h" @@ -133,14 +134,54 @@ 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; + struct nl4_server *nss = NULL; + nfs4_stateid *cnrs = NULL; + ssize_t ret; + bool sync = false; + /* Only offload copy if superblock is the same */ - if (file_inode(file_in)->i_sb != file_inode(file_out)->i_sb) + if (file_in->f_op != &nfs4_file_operations) return -EXDEV; if (!nfs_server_capable(file_inode(file_out), NFS_CAP_COPY)) return -EOPNOTSUPP; if (file_inode(file_in) == file_inode(file_out)) return -EOPNOTSUPP; - return nfs42_proc_copy(file_in, pos_in, file_out, pos_out, count); + /* if the copy size if smaller than 2 RPC payloads, make it + * synchronous + */ + if (count <= 2 * NFS_SERVER(file_inode(file_in))->rsize) + sync = true; +retry: + if (!nfs42_files_from_same_server(file_in, file_out)) { + /* for inter copy, if copy size if smaller than 12 RPC + * payloads, fallback to traditional copy. There are + * 14 RPCs during an NFSv4.x mount between source/dest + * servers. + */ + if (sync || + count <= 14 * NFS_SERVER(file_inode(file_in))->rsize) + return -EOPNOTSUPP; + 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) { + ret = -EOPNOTSUPP; + goto out; + } + nss = &cn_resp->cnr_src; + cnrs = &cn_resp->cnr_stateid; + } + ret = nfs42_proc_copy(file_in, pos_in, file_out, pos_out, count, + nss, cnrs, sync); +out: + kfree(cn_resp); + if (ret == -EAGAIN) + goto retry; + return ret; } static ssize_t nfs4_copy_file_range(struct file *file_in, loff_t pos_in, @@ -263,6 +304,100 @@ out_unlock: out: return ret < 0 ? ret : count; } + +static int read_name_gen = 1; +#define SSC_READ_NAME_BODY "ssc_read_%d" + +struct file * +nfs42_ssc_open(struct vfsmount *ss_mnt, struct nfs_fh *src_fh, + nfs4_stateid *stateid) +{ + struct nfs_fattr fattr; + struct file *filep, *res; + struct nfs_server *server; + struct inode *r_ino = NULL; + struct nfs_open_context *ctx; + struct nfs4_state_owner *sp; + char *read_name; + int len, status = 0; + + server = NFS_SERVER(ss_mnt->mnt_root->d_inode); + + nfs_fattr_init(&fattr); + + status = nfs4_proc_getattr(server, src_fh, &fattr, NULL, NULL); + if (status < 0) { + res = ERR_PTR(status); + goto out; + } + + res = ERR_PTR(-ENOMEM); + len = strlen(SSC_READ_NAME_BODY) + 16; + read_name = kzalloc(len, GFP_NOFS); + if (read_name == NULL) + goto out; + snprintf(read_name, len, SSC_READ_NAME_BODY, read_name_gen++); + + r_ino = nfs_fhget(ss_mnt->mnt_root->d_inode->i_sb, src_fh, &fattr, + NULL); + if (IS_ERR(r_ino)) { + res = ERR_CAST(r_ino); + goto out; + } + + filep = alloc_file_pseudo(r_ino, ss_mnt, read_name, FMODE_READ, + r_ino->i_fop); + if (IS_ERR(filep)) { + res = ERR_CAST(filep); + goto out; + } + filep->f_mode |= FMODE_READ; + + ctx = alloc_nfs_open_context(filep->f_path.dentry, filep->f_mode, + filep); + if (IS_ERR(ctx)) { + res = ERR_CAST(ctx); + goto out_filep; + } + + res = ERR_PTR(-EINVAL); + sp = nfs4_get_state_owner(server, ctx->cred, GFP_KERNEL); + if (sp == NULL) + goto out_ctx; + + ctx->state = nfs4_get_open_state(r_ino, sp); + if (ctx->state == NULL) + goto out_stateowner; + + set_bit(NFS_SRV_SSC_COPY_STATE, &ctx->state->flags); + set_bit(NFS_OPEN_STATE, &ctx->state->flags); + memcpy(&ctx->state->open_stateid.other, &stateid->other, + NFS4_STATEID_OTHER_SIZE); + update_open_stateid(ctx->state, stateid, NULL, filep->f_mode); + + nfs_file_set_open_context(filep, ctx); + put_nfs_open_context(ctx); + + file_ra_state_init(&filep->f_ra, filep->f_mapping->host->i_mapping); + res = filep; +out: + return res; +out_stateowner: + nfs4_put_state_owner(sp); +out_ctx: + put_nfs_open_context(ctx); +out_filep: + fput(filep); + goto out; +} +EXPORT_SYMBOL_GPL(nfs42_ssc_open); +void nfs42_ssc_close(struct file *filep) +{ + struct nfs_open_context *ctx = nfs_file_open_context(filep); + + ctx->state->flags = 0; +} +EXPORT_SYMBOL_GPL(nfs42_ssc_close); #endif /* CONFIG_NFS_V4_2 */ const struct file_operations nfs4_file_operations = { diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index a64ce9518776..970172dcdba1 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -91,7 +91,6 @@ struct nfs4_opendata; static int _nfs4_recover_proc_open(struct nfs4_opendata *data); static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); -static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *, struct nfs4_label *label, struct inode *inode); static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr, struct nfs4_label *label, struct inode *inode); static int nfs4_do_setattr(struct inode *inode, const struct cred *cred, struct nfs_fattr *fattr, struct iattr *sattr, @@ -476,6 +475,7 @@ static int nfs4_do_handle_exception(struct nfs_server *server, case -NFS4ERR_ADMIN_REVOKED: case -NFS4ERR_EXPIRED: case -NFS4ERR_BAD_STATEID: + case -NFS4ERR_PARTNER_NO_AUTH: if (inode != NULL && stateid != NULL) { nfs_inode_find_state_and_recover(inode, stateid); @@ -1716,7 +1716,7 @@ static void nfs_state_clear_delegation(struct nfs4_state *state) write_sequnlock(&state->seqlock); } -static int update_open_stateid(struct nfs4_state *state, +int update_open_stateid(struct nfs4_state *state, const nfs4_stateid *open_stateid, const nfs4_stateid *delegation, fmode_t fmode) @@ -4062,7 +4062,7 @@ static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); } -static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, +int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr, struct nfs4_label *label, struct inode *inode) { @@ -9901,6 +9901,7 @@ static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = { | 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/nfs4state.c b/fs/nfs/nfs4state.c index a66acb6573d4..ba97b9cf632c 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -1557,16 +1557,32 @@ static void nfs42_complete_copies(struct nfs4_state_owner *sp, struct nfs4_state { struct nfs4_copy_state *copy; - if (!test_bit(NFS_CLNT_DST_SSC_COPY_STATE, &state->flags)) + if (!test_bit(NFS_CLNT_DST_SSC_COPY_STATE, &state->flags) && + !test_bit(NFS_CLNT_SRC_SSC_COPY_STATE, &state->flags)) return; spin_lock(&sp->so_server->nfs_client->cl_lock); list_for_each_entry(copy, &sp->so_server->ss_copies, copies) { - if (!nfs4_stateid_match_other(&state->stateid, ©->parent_state->stateid)) - continue; + if ((test_bit(NFS_CLNT_DST_SSC_COPY_STATE, &state->flags) && + !nfs4_stateid_match_other(&state->stateid, + ©->parent_dst_state->stateid))) + continue; copy->flags = 1; - complete(©->completion); - break; + if (test_and_clear_bit(NFS_CLNT_DST_SSC_COPY_STATE, + &state->flags)) { + clear_bit(NFS_CLNT_SRC_SSC_COPY_STATE, &state->flags); + complete(©->completion); + } + } + list_for_each_entry(copy, &sp->so_server->ss_copies, src_copies) { + if ((test_bit(NFS_CLNT_SRC_SSC_COPY_STATE, &state->flags) && + !nfs4_stateid_match_other(&state->stateid, + ©->parent_src_state->stateid))) + continue; + copy->flags = 1; + if (test_and_clear_bit(NFS_CLNT_DST_SSC_COPY_STATE, + &state->flags)) + complete(©->completion); } spin_unlock(&sp->so_server->nfs_client->cl_lock); } @@ -1610,6 +1626,9 @@ static int nfs4_reclaim_open_state(struct nfs4_state_owner *sp, const struct nfs struct nfs4_state *state; unsigned int loop = 0; int status = 0; +#ifdef CONFIG_NFS_V4_2 + bool found_ssc_copy_state = false; +#endif /* CONFIG_NFS_V4_2 */ /* Note: we rely on the sp->so_states list being ordered * so that we always reclaim open(O_RDWR) and/or open(O_WRITE) @@ -1629,6 +1648,13 @@ restart: continue; if (state->state == 0) continue; +#ifdef CONFIG_NFS_V4_2 + if (test_bit(NFS_SRV_SSC_COPY_STATE, &state->flags)) { + nfs4_state_mark_recovery_failed(state, -EIO); + found_ssc_copy_state = true; + continue; + } +#endif /* CONFIG_NFS_V4_2 */ refcount_inc(&state->count); spin_unlock(&sp->so_lock); status = __nfs4_reclaim_open_state(sp, state, ops); @@ -1683,6 +1709,10 @@ restart: } raw_write_seqcount_end(&sp->so_reclaim_seqcount); spin_unlock(&sp->so_lock); +#ifdef CONFIG_NFS_V4_2 + if (found_ssc_copy_state) + return -EIO; +#endif /* CONFIG_NFS_V4_2 */ return 0; out_err: nfs4_put_open_state(state); diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index a4d975631f8c..936c57779ff4 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -7578,6 +7578,7 @@ const struct rpc_procinfo nfs4_procedures[] = { 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), PROC42(LAYOUTERROR, enc_layouterror, dec_layouterror), }; |