From af76fc6c158d5e70764c9cc277aefe7a134436fd Mon Sep 17 00:00:00 2001 From: Olga Kornievskaia Date: Wed, 5 Jun 2019 13:46:29 -0400 Subject: NFSD fill-in netloc4 structure nfs.4 defines nfs42_netaddr structure that represents netloc4. Populate needed fields from the sockaddr structure. This will be used by flexfiles and 4.2 inter copy Signed-off-by: Olga Kornievskaia --- fs/nfsd/nfsd.h | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/fs/nfsd/nfsd.h b/fs/nfsd/nfsd.h index 57b93d95fa5c..0ff6ef964a48 100644 --- a/fs/nfsd/nfsd.h +++ b/fs/nfsd/nfsd.h @@ -19,6 +19,7 @@ #include #include #include +#include #include @@ -387,6 +388,37 @@ void nfsd_lockd_shutdown(void); extern const u32 nfsd_suppattrs[3][3]; +static inline u32 nfsd4_set_netaddr(struct sockaddr *addr, + struct nfs42_netaddr *netaddr) +{ + struct sockaddr_in *sin = (struct sockaddr_in *)addr; + struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr; + unsigned int port; + size_t ret_addr, ret_port; + + switch (addr->sa_family) { + case AF_INET: + port = ntohs(sin->sin_port); + sprintf(netaddr->netid, "tcp"); + netaddr->netid_len = 3; + break; + case AF_INET6: + port = ntohs(sin6->sin6_port); + sprintf(netaddr->netid, "tcp6"); + netaddr->netid_len = 4; + break; + default: + return nfserr_inval; + } + ret_addr = rpc_ntop(addr, netaddr->addr, sizeof(netaddr->addr)); + ret_port = snprintf(netaddr->addr + ret_addr, + RPCBIND_MAXUADDRLEN + 1 - ret_addr, + ".%u.%u", port >> 8, port & 0xff); + WARN_ON(ret_port >= RPCBIND_MAXUADDRLEN + 1 - ret_addr); + netaddr->addr_len = ret_addr + ret_port; + return 0; +} + static inline bool bmval_is_subset(const u32 *bm1, const u32 *bm2) { return !((bm1[0] & ~bm2[0]) || -- cgit v1.2.3 From 84e1b21d5ec4cc1b005586f32c67c046ea4ffb8a Mon Sep 17 00:00:00 2001 From: Olga Kornievskaia Date: Fri, 13 Sep 2019 14:00:57 -0400 Subject: NFSD add ca_source_server<> to COPY Decode the ca_source_server list that's sent but only use the first one. Presence of non-zero list indicates an "inter" copy. Signed-off-by: Andy Adamson Signed-off-by: Olga Kornievskaia --- fs/nfsd/nfs4xdr.c | 65 ++++++++++++++++++++++++++++++++++++++++++++++++++++++- fs/nfsd/xdr4.h | 12 +++++----- 2 files changed, 71 insertions(+), 6 deletions(-) diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index d2dc4c0e22e8..a1d839406dc1 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -40,6 +40,7 @@ #include #include #include +#include #include "idmap.h" #include "acl.h" @@ -1744,10 +1745,47 @@ nfsd4_decode_clone(struct nfsd4_compoundargs *argp, struct nfsd4_clone *clone) DECODE_TAIL; } +static __be32 nfsd4_decode_nl4_server(struct nfsd4_compoundargs *argp, + struct nl4_server *ns) +{ + DECODE_HEAD; + struct nfs42_netaddr *naddr; + + READ_BUF(4); + ns->nl4_type = be32_to_cpup(p++); + + /* currently support for 1 inter-server source server */ + switch (ns->nl4_type) { + case NL4_NETADDR: + naddr = &ns->u.nl4_addr; + + READ_BUF(4); + naddr->netid_len = be32_to_cpup(p++); + if (naddr->netid_len > RPCBIND_MAXNETIDLEN) + goto xdr_error; + + READ_BUF(naddr->netid_len + 4); /* 4 for uaddr len */ + COPYMEM(naddr->netid, naddr->netid_len); + + naddr->addr_len = be32_to_cpup(p++); + if (naddr->addr_len > RPCBIND_MAXUADDRLEN) + goto xdr_error; + + READ_BUF(naddr->addr_len); + COPYMEM(naddr->addr, naddr->addr_len); + break; + default: + goto xdr_error; + } + DECODE_TAIL; +} + static __be32 nfsd4_decode_copy(struct nfsd4_compoundargs *argp, struct nfsd4_copy *copy) { DECODE_HEAD; + struct nl4_server *ns_dummy; + int i, count; status = nfsd4_decode_stateid(argp, ©->cp_src_stateid); if (status) @@ -1762,7 +1800,32 @@ nfsd4_decode_copy(struct nfsd4_compoundargs *argp, struct nfsd4_copy *copy) p = xdr_decode_hyper(p, ©->cp_count); p++; /* ca_consecutive: we always do consecutive copies */ copy->cp_synchronous = be32_to_cpup(p++); - /* tmp = be32_to_cpup(p); Source server list not supported */ + + count = be32_to_cpup(p++); + + copy->cp_intra = false; + if (count == 0) { /* intra-server copy */ + copy->cp_intra = true; + goto intra; + } + + /* decode all the supplied server addresses but use first */ + status = nfsd4_decode_nl4_server(argp, ©->cp_src); + if (status) + return status; + + ns_dummy = kmalloc(sizeof(struct nl4_server), GFP_KERNEL); + if (ns_dummy == NULL) + return nfserrno(-ENOMEM); + for (i = 0; i < count - 1; i++) { + status = nfsd4_decode_nl4_server(argp, ns_dummy); + if (status) { + kfree(ns_dummy); + return status; + } + } + kfree(ns_dummy); +intra: DECODE_TAIL; } diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h index f4737d66ee98..e815a9cc3b05 100644 --- a/fs/nfsd/xdr4.h +++ b/fs/nfsd/xdr4.h @@ -518,11 +518,13 @@ struct nfsd42_write_res { struct nfsd4_copy { /* request */ - stateid_t cp_src_stateid; - stateid_t cp_dst_stateid; - u64 cp_src_pos; - u64 cp_dst_pos; - u64 cp_count; + stateid_t cp_src_stateid; + stateid_t cp_dst_stateid; + u64 cp_src_pos; + u64 cp_dst_pos; + u64 cp_count; + struct nl4_server cp_src; + bool cp_intra; /* both */ bool cp_synchronous; -- cgit v1.2.3 From 51911868fc62f6b1bc460ea2d8bddece6c72e467 Mon Sep 17 00:00:00 2001 From: Olga Kornievskaia Date: Thu, 8 Aug 2019 11:14:59 -0400 Subject: NFSD COPY_NOTIFY xdr Signed-off-by: Olga Kornievskaia --- fs/nfsd/nfs4proc.c | 28 +++++++++++++++++ fs/nfsd/nfs4xdr.c | 90 ++++++++++++++++++++++++++++++++++++++++++++++++++++-- fs/nfsd/xdr4.h | 13 ++++++++ 3 files changed, 129 insertions(+), 2 deletions(-) diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c index 4798667af647..d3f60562ac1d 100644 --- a/fs/nfsd/nfs4proc.c +++ b/fs/nfsd/nfs4proc.c @@ -1339,6 +1339,13 @@ nfsd4_offload_cancel(struct svc_rqst *rqstp, return status; } +static __be32 +nfsd4_copy_notify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, + union nfsd4_op_u *u) +{ + return nfserr_notsupp; +} + static __be32 nfsd4_fallocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_fallocate *fallocate, int flags) @@ -2292,6 +2299,21 @@ static inline u32 nfsd4_offload_status_rsize(struct svc_rqst *rqstp, 1 /* osr_complete<1> optional 0 for now */) * sizeof(__be32); } +static inline u32 nfsd4_copy_notify_rsize(struct svc_rqst *rqstp, + struct nfsd4_op *op) +{ + return (op_encode_hdr_size + + 3 /* cnr_lease_time */ + + 1 /* We support one cnr_source_server */ + + 1 /* cnr_stateid seq */ + + op_encode_stateid_maxsz /* cnr_stateid */ + + 1 /* num cnr_source_server*/ + + 1 /* nl4_type */ + + 1 /* nl4 size */ + + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) /*nl4_loc + nl4_loc_sz */) + * sizeof(__be32); +} + #ifdef CONFIG_NFSD_PNFS static inline u32 nfsd4_getdeviceinfo_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) { @@ -2716,6 +2738,12 @@ static const struct nfsd4_operation nfsd4_ops[] = { .op_name = "OP_OFFLOAD_CANCEL", .op_rsize_bop = nfsd4_only_status_rsize, }, + [OP_COPY_NOTIFY] = { + .op_func = nfsd4_copy_notify, + .op_flags = OP_MODIFIES_SOMETHING, + .op_name = "OP_COPY_NOTIFY", + .op_rsize_bop = nfsd4_copy_notify_rsize, + }, }; /** diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index a1d839406dc1..1d8a08b84e32 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -1837,6 +1837,18 @@ nfsd4_decode_offload_status(struct nfsd4_compoundargs *argp, return nfsd4_decode_stateid(argp, &os->stateid); } +static __be32 +nfsd4_decode_copy_notify(struct nfsd4_compoundargs *argp, + struct nfsd4_copy_notify *cn) +{ + int status; + + status = nfsd4_decode_stateid(argp, &cn->cpn_src_stateid); + if (status) + return status; + return nfsd4_decode_nl4_server(argp, &cn->cpn_dst); +} + static __be32 nfsd4_decode_seek(struct nfsd4_compoundargs *argp, struct nfsd4_seek *seek) { @@ -1938,7 +1950,7 @@ static const nfsd4_dec nfsd4_dec_ops[] = { /* new operations for NFSv4.2 */ [OP_ALLOCATE] = (nfsd4_dec)nfsd4_decode_fallocate, [OP_COPY] = (nfsd4_dec)nfsd4_decode_copy, - [OP_COPY_NOTIFY] = (nfsd4_dec)nfsd4_decode_notsupp, + [OP_COPY_NOTIFY] = (nfsd4_dec)nfsd4_decode_copy_notify, [OP_DEALLOCATE] = (nfsd4_dec)nfsd4_decode_fallocate, [OP_IO_ADVISE] = (nfsd4_dec)nfsd4_decode_notsupp, [OP_LAYOUTERROR] = (nfsd4_dec)nfsd4_decode_notsupp, @@ -4306,6 +4318,46 @@ nfsd42_encode_write_res(struct nfsd4_compoundres *resp, return nfs_ok; } +static __be32 +nfsd42_encode_nl4_server(struct nfsd4_compoundres *resp, struct nl4_server *ns) +{ + struct xdr_stream *xdr = &resp->xdr; + struct nfs42_netaddr *addr; + __be32 *p; + + p = xdr_reserve_space(xdr, 4); + *p++ = cpu_to_be32(ns->nl4_type); + + switch (ns->nl4_type) { + case NL4_NETADDR: + addr = &ns->u.nl4_addr; + + /* netid_len, netid, uaddr_len, uaddr (port included + * in RPCBIND_MAXUADDRLEN) + */ + p = xdr_reserve_space(xdr, + 4 /* netid len */ + + (XDR_QUADLEN(addr->netid_len) * 4) + + 4 /* uaddr len */ + + (XDR_QUADLEN(addr->addr_len) * 4)); + if (!p) + return nfserr_resource; + + *p++ = cpu_to_be32(addr->netid_len); + p = xdr_encode_opaque_fixed(p, addr->netid, + addr->netid_len); + *p++ = cpu_to_be32(addr->addr_len); + p = xdr_encode_opaque_fixed(p, addr->addr, + addr->addr_len); + break; + default: + WARN_ON_ONCE(ns->nl4_type != NL4_NETADDR); + return nfserr_inval; + } + + return 0; +} + static __be32 nfsd4_encode_copy(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_copy *copy) @@ -4339,6 +4391,40 @@ nfsd4_encode_offload_status(struct nfsd4_compoundres *resp, __be32 nfserr, return nfserr; } +static __be32 +nfsd4_encode_copy_notify(struct nfsd4_compoundres *resp, __be32 nfserr, + struct nfsd4_copy_notify *cn) +{ + struct xdr_stream *xdr = &resp->xdr; + __be32 *p; + + if (nfserr) + return nfserr; + + /* 8 sec, 4 nsec */ + p = xdr_reserve_space(xdr, 12); + if (!p) + return nfserr_resource; + + /* cnr_lease_time */ + p = xdr_encode_hyper(p, cn->cpn_sec); + *p++ = cpu_to_be32(cn->cpn_nsec); + + /* cnr_stateid */ + nfserr = nfsd4_encode_stateid(xdr, &cn->cpn_cnr_stateid); + if (nfserr) + return nfserr; + + /* cnr_src.nl_nsvr */ + p = xdr_reserve_space(xdr, 4); + if (!p) + return nfserr_resource; + + *p++ = cpu_to_be32(1); + + return nfsd42_encode_nl4_server(resp, &cn->cpn_src); +} + static __be32 nfsd4_encode_seek(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_seek *seek) @@ -4436,7 +4522,7 @@ static const nfsd4_enc nfsd4_enc_ops[] = { /* NFSv4.2 operations */ [OP_ALLOCATE] = (nfsd4_enc)nfsd4_encode_noop, [OP_COPY] = (nfsd4_enc)nfsd4_encode_copy, - [OP_COPY_NOTIFY] = (nfsd4_enc)nfsd4_encode_noop, + [OP_COPY_NOTIFY] = (nfsd4_enc)nfsd4_encode_copy_notify, [OP_DEALLOCATE] = (nfsd4_enc)nfsd4_encode_noop, [OP_IO_ADVISE] = (nfsd4_enc)nfsd4_encode_noop, [OP_LAYOUTERROR] = (nfsd4_enc)nfsd4_encode_noop, diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h index e815a9cc3b05..8231fe04bec0 100644 --- a/fs/nfsd/xdr4.h +++ b/fs/nfsd/xdr4.h @@ -570,6 +570,18 @@ struct nfsd4_offload_status { u32 status; }; +struct nfsd4_copy_notify { + /* request */ + stateid_t cpn_src_stateid; + struct nl4_server cpn_dst; + + /* response */ + stateid_t cpn_cnr_stateid; + u64 cpn_sec; + u32 cpn_nsec; + struct nl4_server cpn_src; +}; + struct nfsd4_op { int opnum; const struct nfsd4_operation * opdesc; @@ -629,6 +641,7 @@ struct nfsd4_op { struct nfsd4_clone clone; struct nfsd4_copy copy; struct nfsd4_offload_status offload_status; + struct nfsd4_copy_notify copy_notify; struct nfsd4_seek seek; } u; struct nfs4_replay * replay; -- cgit v1.2.3 From 624322f1adc58acd0b69f77a6ddc764207e97241 Mon Sep 17 00:00:00 2001 From: Olga Kornievskaia Date: Fri, 4 Oct 2019 16:34:26 -0400 Subject: NFSD add COPY_NOTIFY operation Introducing the COPY_NOTIFY operation. Create a new unique stateid that will keep track of the copy state and the upcoming READs that will use that stateid. Each associated parent stateid has a list of copy notify stateids. A copy notify structure makes a copy of the parent stateid and a clientid and will use it to look up the parent stateid during the READ request (suggested by Trond Myklebust ). At nfs4_put_stid() time, we walk the list of the associated copy notify stateids and delete them. Laundromat thread will traverse globally stored copy notify stateid in idr and notice if any haven't been referenced in the lease period, if so, it'll remove them. Return single netaddr to advertise to the copy. Suggested-by: Trond Myklebust Signed-off-by: Olga Kornievskaia Signed-off-by: Andy Adamson --- fs/nfsd/nfs4proc.c | 58 +++++++++++++++++++++++----- fs/nfsd/nfs4state.c | 106 +++++++++++++++++++++++++++++++++++++++++++++++----- fs/nfsd/state.h | 31 +++++++++++++-- fs/nfsd/xdr4.h | 2 +- 4 files changed, 173 insertions(+), 24 deletions(-) diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c index d3f60562ac1d..dee5aec098fd 100644 --- a/fs/nfsd/nfs4proc.c +++ b/fs/nfsd/nfs4proc.c @@ -37,6 +37,7 @@ #include #include #include +#include #include "idmap.h" #include "cache.h" @@ -776,7 +777,7 @@ nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, /* check stateid */ status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh, &read->rd_stateid, RD_STATE, - &read->rd_nf); + &read->rd_nf, NULL); if (status) { dprintk("NFSD: nfsd4_read: couldn't process stateid!\n"); goto out; @@ -948,7 +949,7 @@ nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, if (setattr->sa_iattr.ia_valid & ATTR_SIZE) { status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh, &setattr->sa_stateid, - WR_STATE, NULL); + WR_STATE, NULL, NULL); if (status) { dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n"); return status; @@ -999,7 +1000,7 @@ nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, trace_nfsd_write_start(rqstp, &cstate->current_fh, write->wr_offset, cnt); status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh, - stateid, WR_STATE, &nf); + stateid, WR_STATE, &nf, NULL); if (status) { dprintk("NFSD: nfsd4_write: couldn't process stateid!\n"); return status; @@ -1034,14 +1035,14 @@ nfsd4_verify_copy(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, return nfserr_nofilehandle; status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->save_fh, - src_stateid, RD_STATE, src); + src_stateid, RD_STATE, src, NULL); if (status) { dprintk("NFSD: %s: couldn't process src stateid!\n", __func__); goto out; } status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh, - dst_stateid, WR_STATE, dst); + dst_stateid, WR_STATE, dst, NULL); if (status) { dprintk("NFSD: %s: couldn't process dst stateid!\n", __func__); goto out_put_src; @@ -1221,7 +1222,7 @@ static void dup_copy_fields(struct nfsd4_copy *src, struct nfsd4_copy *dst) static void cleanup_async_copy(struct nfsd4_copy *copy) { - nfs4_free_cp_state(copy); + nfs4_free_copy_state(copy); nfsd_file_put(copy->nf_dst); nfsd_file_put(copy->nf_src); spin_lock(©->cp_clp->async_lock); @@ -1275,7 +1276,7 @@ nfsd4_copy(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, async_copy = kzalloc(sizeof(struct nfsd4_copy), GFP_KERNEL); if (!async_copy) goto out; - if (!nfs4_init_cp_state(nn, copy)) { + if (!nfs4_init_copy_state(nn, copy)) { kfree(async_copy); goto out; } @@ -1343,7 +1344,44 @@ static __be32 nfsd4_copy_notify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, union nfsd4_op_u *u) { - return nfserr_notsupp; + struct nfsd4_copy_notify *cn = &u->copy_notify; + __be32 status; + struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); + struct nfs4_stid *stid; + struct nfs4_cpntf_state *cps; + struct nfs4_client *clp = cstate->clp; + + status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh, + &cn->cpn_src_stateid, RD_STATE, NULL, + &stid); + if (status) + return status; + + cn->cpn_sec = nn->nfsd4_lease; + cn->cpn_nsec = 0; + + status = nfserrno(-ENOMEM); + cps = nfs4_alloc_init_cpntf_state(nn, stid); + if (!cps) + goto out; + memcpy(&cn->cpn_cnr_stateid, &cps->cp_stateid.stid, sizeof(stateid_t)); + memcpy(&cps->cp_p_stateid, &stid->sc_stateid, sizeof(stateid_t)); + memcpy(&cps->cp_p_clid, &clp->cl_clientid, sizeof(clientid_t)); + + /* For now, only return one server address in cpn_src, the + * address used by the client to connect to this server. + */ + cn->cpn_src.nl4_type = NL4_NETADDR; + status = nfsd4_set_netaddr((struct sockaddr *)&rqstp->rq_daddr, + &cn->cpn_src.u.nl4_addr); + WARN_ON_ONCE(status); + if (status) { + nfs4_put_cpntf_state(nn, cps); + goto out; + } +out: + nfs4_put_stid(stid); + return status; } static __be32 @@ -1355,7 +1393,7 @@ nfsd4_fallocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh, &fallocate->falloc_stateid, - WR_STATE, &nf); + WR_STATE, &nf, NULL); if (status != nfs_ok) { dprintk("NFSD: nfsd4_fallocate: couldn't process stateid!\n"); return status; @@ -1414,7 +1452,7 @@ nfsd4_seek(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh, &seek->seek_stateid, - RD_STATE, &nf); + RD_STATE, &nf, NULL); if (status) { dprintk("NFSD: nfsd4_seek: couldn't process stateid!\n"); return status; diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 369e574c5092..ae3dff210108 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -80,6 +80,7 @@ static u64 current_sessionid = 1; static bool check_for_locks(struct nfs4_file *fp, struct nfs4_lockowner *lowner); static void nfs4_free_ol_stateid(struct nfs4_stid *stid); void nfsd4_end_grace(struct nfsd_net *nn); +static void _free_cpntf_state_locked(struct nfsd_net *nn, struct nfs4_cpntf_state *cps); /* Locking: */ @@ -722,6 +723,7 @@ struct nfs4_stid *nfs4_alloc_stid(struct nfs4_client *cl, struct kmem_cache *sla /* Will be incremented before return to client: */ refcount_set(&stid->sc_count, 1); spin_lock_init(&stid->sc_lock); + INIT_LIST_HEAD(&stid->sc_cp_list); /* * It shouldn't be a problem to reuse an opaque stateid value. @@ -741,30 +743,76 @@ out_free: /* * Create a unique stateid_t to represent each COPY. */ -int nfs4_init_cp_state(struct nfsd_net *nn, struct nfsd4_copy *copy) +static int nfs4_init_cp_state(struct nfsd_net *nn, copy_stateid_t *stid, + unsigned char sc_type) { int new_id; + stid->stid.si_opaque.so_clid.cl_boot = nn->boot_time; + stid->stid.si_opaque.so_clid.cl_id = nn->s2s_cp_cl_id; + stid->sc_type = sc_type; + idr_preload(GFP_KERNEL); spin_lock(&nn->s2s_cp_lock); - new_id = idr_alloc_cyclic(&nn->s2s_cp_stateids, copy, 0, 0, GFP_NOWAIT); + new_id = idr_alloc_cyclic(&nn->s2s_cp_stateids, stid, 0, 0, GFP_NOWAIT); + stid->stid.si_opaque.so_id = new_id; spin_unlock(&nn->s2s_cp_lock); idr_preload_end(); if (new_id < 0) return 0; - copy->cp_stateid.si_opaque.so_id = new_id; - copy->cp_stateid.si_opaque.so_clid.cl_boot = nn->boot_time; - copy->cp_stateid.si_opaque.so_clid.cl_id = nn->s2s_cp_cl_id; return 1; } -void nfs4_free_cp_state(struct nfsd4_copy *copy) +int nfs4_init_copy_state(struct nfsd_net *nn, struct nfsd4_copy *copy) +{ + return nfs4_init_cp_state(nn, ©->cp_stateid, NFS4_COPY_STID); +} + +struct nfs4_cpntf_state *nfs4_alloc_init_cpntf_state(struct nfsd_net *nn, + struct nfs4_stid *p_stid) +{ + struct nfs4_cpntf_state *cps; + + cps = kzalloc(sizeof(struct nfs4_cpntf_state), GFP_KERNEL); + if (!cps) + return NULL; + cps->cpntf_time = get_seconds(); + refcount_set(&cps->cp_stateid.sc_count, 1); + if (!nfs4_init_cp_state(nn, &cps->cp_stateid, NFS4_COPYNOTIFY_STID)) + goto out_free; + spin_lock(&nn->s2s_cp_lock); + list_add(&cps->cp_list, &p_stid->sc_cp_list); + spin_unlock(&nn->s2s_cp_lock); + return cps; +out_free: + kfree(cps); + return NULL; +} + +void nfs4_free_copy_state(struct nfsd4_copy *copy) { struct nfsd_net *nn; + WARN_ON_ONCE(copy->cp_stateid.sc_type != NFS4_COPY_STID); nn = net_generic(copy->cp_clp->net, nfsd_net_id); spin_lock(&nn->s2s_cp_lock); - idr_remove(&nn->s2s_cp_stateids, copy->cp_stateid.si_opaque.so_id); + idr_remove(&nn->s2s_cp_stateids, + copy->cp_stateid.stid.si_opaque.so_id); + spin_unlock(&nn->s2s_cp_lock); +} + +static void nfs4_free_cpntf_statelist(struct net *net, struct nfs4_stid *stid) +{ + struct nfs4_cpntf_state *cps; + struct nfsd_net *nn; + + nn = net_generic(net, nfsd_net_id); + spin_lock(&nn->s2s_cp_lock); + while (!list_empty(&stid->sc_cp_list)) { + cps = list_first_entry(&stid->sc_cp_list, + struct nfs4_cpntf_state, cp_list); + _free_cpntf_state_locked(nn, cps); + } spin_unlock(&nn->s2s_cp_lock); } @@ -915,6 +963,7 @@ nfs4_put_stid(struct nfs4_stid *s) return; } idr_remove(&clp->cl_stateids, s->sc_stateid.si_opaque.so_id); + nfs4_free_cpntf_statelist(clp->net, s); spin_unlock(&clp->cl_lock); s->sc_free(s); if (fp) @@ -5215,6 +5264,9 @@ nfs4_laundromat(struct nfsd_net *nn) struct list_head *pos, *next, reaplist; time_t cutoff = get_seconds() - nn->nfsd4_lease; time_t t, new_timeo = nn->nfsd4_lease; + struct nfs4_cpntf_state *cps; + copy_stateid_t *cps_t; + int i; dprintk("NFSD: laundromat service - starting\n"); @@ -5225,6 +5277,17 @@ nfs4_laundromat(struct nfsd_net *nn) dprintk("NFSD: end of grace period\n"); nfsd4_end_grace(nn); INIT_LIST_HEAD(&reaplist); + + spin_lock(&nn->s2s_cp_lock); + idr_for_each_entry(&nn->s2s_cp_stateids, cps_t, i) { + cps = container_of(cps_t, struct nfs4_cpntf_state, cp_stateid); + if (cps->cp_stateid.sc_type == NFS4_COPYNOTIFY_STID && + !time_after((unsigned long)cps->cpntf_time, + (unsigned long)cutoff)) + _free_cpntf_state_locked(nn, cps); + } + spin_unlock(&nn->s2s_cp_lock); + spin_lock(&nn->client_lock); list_for_each_safe(pos, next, &nn->client_lru) { clp = list_entry(pos, struct nfs4_client, cl_lru); @@ -5600,6 +5663,24 @@ nfs4_check_file(struct svc_rqst *rqstp, struct svc_fh *fhp, struct nfs4_stid *s, out: return status; } +static void +_free_cpntf_state_locked(struct nfsd_net *nn, struct nfs4_cpntf_state *cps) +{ + WARN_ON_ONCE(cps->cp_stateid.sc_type != NFS4_COPYNOTIFY_STID); + if (!refcount_dec_and_test(&cps->cp_stateid.sc_count)) + return; + list_del(&cps->cp_list); + idr_remove(&nn->s2s_cp_stateids, + cps->cp_stateid.stid.si_opaque.so_id); + kfree(cps); +} + +void nfs4_put_cpntf_state(struct nfsd_net *nn, struct nfs4_cpntf_state *cps) +{ + spin_lock(&nn->s2s_cp_lock); + _free_cpntf_state_locked(nn, cps); + spin_unlock(&nn->s2s_cp_lock); +} /* * Checks for stateid operations @@ -5607,7 +5688,8 @@ out: __be32 nfs4_preprocess_stateid_op(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct svc_fh *fhp, - stateid_t *stateid, int flags, struct nfsd_file **nfp) + stateid_t *stateid, int flags, struct nfsd_file **nfp, + struct nfs4_stid **cstid) { struct inode *ino = d_inode(fhp->fh_dentry); struct net *net = SVC_NET(rqstp); @@ -5656,8 +5738,12 @@ done: if (status == nfs_ok && nfp) status = nfs4_check_file(rqstp, fhp, s, nfp, flags); out: - if (s) - nfs4_put_stid(s); + if (s) { + if (!status && cstid) + *cstid = s; + else + nfs4_put_stid(s); + } return status; } diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h index d61b83b9654c..35eb7170aefc 100644 --- a/fs/nfsd/state.h +++ b/fs/nfsd/state.h @@ -56,6 +56,14 @@ typedef struct { stateid_opaque_t si_opaque; } stateid_t; +typedef struct { + stateid_t stid; +#define NFS4_COPY_STID 1 +#define NFS4_COPYNOTIFY_STID 2 + unsigned char sc_type; + refcount_t sc_count; +} copy_stateid_t; + #define STATEID_FMT "(%08x/%08x/%08x/%08x)" #define STATEID_VAL(s) \ (s)->si_opaque.so_clid.cl_boot, \ @@ -96,6 +104,7 @@ struct nfs4_stid { #define NFS4_REVOKED_DELEG_STID 16 #define NFS4_CLOSED_DELEG_STID 32 #define NFS4_LAYOUT_STID 64 + struct list_head sc_cp_list; unsigned char sc_type; stateid_t sc_stateid; spinlock_t sc_lock; @@ -104,6 +113,17 @@ struct nfs4_stid { void (*sc_free)(struct nfs4_stid *); }; +/* Keep a list of stateids issued by the COPY_NOTIFY, associate it with the + * parent OPEN/LOCK/DELEG stateid. + */ +struct nfs4_cpntf_state { + copy_stateid_t cp_stateid; + struct list_head cp_list; /* per parent nfs4_stid */ + stateid_t cp_p_stateid; /* copy of parent's stateid */ + clientid_t cp_p_clid; /* copy of parent's clid */ + time_t cpntf_time; /* last time stateid used */ +}; + /* * Represents a delegation stateid. The nfs4_client holds references to these * and they are put when it is being destroyed or when the delegation is @@ -618,14 +638,17 @@ struct nfsd4_copy; extern __be32 nfs4_preprocess_stateid_op(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct svc_fh *fhp, - stateid_t *stateid, int flags, struct nfsd_file **filp); + stateid_t *stateid, int flags, struct nfsd_file **filp, + struct nfs4_stid **cstid); __be32 nfsd4_lookup_stateid(struct nfsd4_compound_state *cstate, stateid_t *stateid, unsigned char typemask, struct nfs4_stid **s, struct nfsd_net *nn); struct nfs4_stid *nfs4_alloc_stid(struct nfs4_client *cl, struct kmem_cache *slab, void (*sc_free)(struct nfs4_stid *)); -int nfs4_init_cp_state(struct nfsd_net *nn, struct nfsd4_copy *copy); -void nfs4_free_cp_state(struct nfsd4_copy *copy); +int nfs4_init_copy_state(struct nfsd_net *nn, struct nfsd4_copy *copy); +void nfs4_free_copy_state(struct nfsd4_copy *copy); +struct nfs4_cpntf_state *nfs4_alloc_init_cpntf_state(struct nfsd_net *nn, + struct nfs4_stid *p_stid); void nfs4_unhash_stid(struct nfs4_stid *s); void nfs4_put_stid(struct nfs4_stid *s); void nfs4_inc_and_copy_stateid(stateid_t *dst, struct nfs4_stid *stid); @@ -655,6 +678,8 @@ void put_nfs4_file(struct nfs4_file *fi); extern void nfs4_put_copy(struct nfsd4_copy *copy); extern struct nfsd4_copy * find_async_copy(struct nfs4_client *clp, stateid_t *staetid); +extern void nfs4_put_cpntf_state(struct nfsd_net *nn, + struct nfs4_cpntf_state *cps); static inline void get_nfs4_file(struct nfs4_file *fi) { refcount_inc(&fi->fi_ref); diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h index 8231fe04bec0..2937e06f3554 100644 --- a/fs/nfsd/xdr4.h +++ b/fs/nfsd/xdr4.h @@ -542,7 +542,7 @@ struct nfsd4_copy { struct nfsd_file *nf_src; struct nfsd_file *nf_dst; - stateid_t cp_stateid; + copy_stateid_t cp_stateid; struct list_head copies; struct task_struct *copy_task; -- cgit v1.2.3 From b7342204253aaa1ce8351e0d94b43f98c8706cee Mon Sep 17 00:00:00 2001 From: Olga Kornievskaia Date: Fri, 6 Sep 2019 15:17:21 -0400 Subject: NFSD check stateids against copy stateids Incoming stateid (used by a READ) could be a saved copy stateid. Using the provided stateid, look it up in the list of copy_notify stateids. If found, use the parent's stateid and parent's clid to look up the parent's stid to do the appropriate checks. Update the copy notify timestamp (cpntf_time) with current time this making it 'active' so that laundromat thread will not delete copy notify state. Signed-off-by: Olga Kornievskaia --- fs/nfsd/nfs4state.c | 74 +++++++++++++++++++++++++++++++++++++++++++++++------ 1 file changed, 66 insertions(+), 8 deletions(-) diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index ae3dff210108..31b71aed4230 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -4539,7 +4539,8 @@ static __be32 nfsd4_check_seqid(struct nfsd4_compound_state *cstate, struct nfs4 static __be32 lookup_clientid(clientid_t *clid, struct nfsd4_compound_state *cstate, - struct nfsd_net *nn) + struct nfsd_net *nn, + bool sessions) { struct nfs4_client *found; @@ -4560,7 +4561,7 @@ static __be32 lookup_clientid(clientid_t *clid, */ WARN_ON_ONCE(cstate->session); spin_lock(&nn->client_lock); - found = find_confirmed_client(clid, false, nn); + found = find_confirmed_client(clid, sessions, nn); if (!found) { spin_unlock(&nn->client_lock); return nfserr_expired; @@ -4593,7 +4594,7 @@ nfsd4_process_open1(struct nfsd4_compound_state *cstate, if (open->op_file == NULL) return nfserr_jukebox; - status = lookup_clientid(clientid, cstate, nn); + status = lookup_clientid(clientid, cstate, nn, false); if (status) return status; clp = cstate->clp; @@ -5182,7 +5183,7 @@ nfsd4_renew(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, dprintk("process_renew(%08x/%08x): starting\n", clid->cl_boot, clid->cl_id); - status = lookup_clientid(clid, cstate, nn); + status = lookup_clientid(clid, cstate, nn, false); if (status) goto out; clp = cstate->clp; @@ -5584,7 +5585,8 @@ nfsd4_lookup_stateid(struct nfsd4_compound_state *cstate, if (ZERO_STATEID(stateid) || ONE_STATEID(stateid) || CLOSE_STATEID(stateid)) return nfserr_bad_stateid; - status = lookup_clientid(&stateid->si_opaque.so_clid, cstate, nn); + status = lookup_clientid(&stateid->si_opaque.so_clid, cstate, nn, + false); if (status == nfserr_stale_clientid) { if (cstate->session) return nfserr_bad_stateid; @@ -5674,6 +5676,59 @@ _free_cpntf_state_locked(struct nfsd_net *nn, struct nfs4_cpntf_state *cps) cps->cp_stateid.stid.si_opaque.so_id); kfree(cps); } +/* + * A READ from an inter server to server COPY will have a + * copy stateid. Look up the copy notify stateid from the + * idr structure and take a reference on it. + */ +static __be32 _find_cpntf_state(struct nfsd_net *nn, stateid_t *st, + struct nfs4_cpntf_state **cps) +{ + copy_stateid_t *cps_t; + struct nfs4_cpntf_state *state = NULL; + + if (st->si_opaque.so_clid.cl_id != nn->s2s_cp_cl_id) + return nfserr_bad_stateid; + spin_lock(&nn->s2s_cp_lock); + cps_t = idr_find(&nn->s2s_cp_stateids, st->si_opaque.so_id); + if (cps_t) { + state = container_of(cps_t, struct nfs4_cpntf_state, + cp_stateid); + if (state->cp_stateid.sc_type != NFS4_COPYNOTIFY_STID) + return nfserr_bad_stateid; + refcount_inc(&state->cp_stateid.sc_count); + } + spin_unlock(&nn->s2s_cp_lock); + if (!state) + return nfserr_bad_stateid; + *cps = state; + return 0; +} + +static __be32 find_cpntf_state(struct nfsd_net *nn, stateid_t *st, + struct nfs4_stid **stid) +{ + __be32 status; + struct nfs4_cpntf_state *cps = NULL; + struct nfsd4_compound_state cstate; + + status = _find_cpntf_state(nn, st, &cps); + if (status) + return status; + + cps->cpntf_time = get_seconds(); + memset(&cstate, 0, sizeof(cstate)); + status = lookup_clientid(&cps->cp_p_clid, &cstate, nn, true); + if (status) + goto out; + status = nfsd4_lookup_stateid(&cstate, &cps->cp_p_stateid, + NFS4_DELEG_STID|NFS4_OPEN_STID|NFS4_LOCK_STID, + stid, nn); + put_client_renew(cstate.clp); +out: + nfs4_put_cpntf_state(nn, cps); + return status; +} void nfs4_put_cpntf_state(struct nfsd_net *nn, struct nfs4_cpntf_state *cps) { @@ -5711,6 +5766,8 @@ nfs4_preprocess_stateid_op(struct svc_rqst *rqstp, status = nfsd4_lookup_stateid(cstate, stateid, NFS4_DELEG_STID|NFS4_OPEN_STID|NFS4_LOCK_STID, &s, nn); + if (status == nfserr_bad_stateid) + status = find_cpntf_state(nn, stateid, &s); if (status) return status; status = nfsd4_stid_check_stateid_generation(stateid, s, @@ -6743,7 +6800,8 @@ nfsd4_lockt(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, return nfserr_inval; if (!nfsd4_has_session(cstate)) { - status = lookup_clientid(&lockt->lt_clientid, cstate, nn); + status = lookup_clientid(&lockt->lt_clientid, cstate, nn, + false); if (status) goto out; } @@ -6927,7 +6985,7 @@ nfsd4_release_lockowner(struct svc_rqst *rqstp, dprintk("nfsd4_release_lockowner clientid: (%08x/%08x):\n", clid->cl_boot, clid->cl_id); - status = lookup_clientid(clid, cstate, nn); + status = lookup_clientid(clid, cstate, nn, false); if (status) return status; @@ -7074,7 +7132,7 @@ nfs4_check_open_reclaim(clientid_t *clid, __be32 status; /* find clientid in conf_id_hashtbl */ - status = lookup_clientid(clid, cstate, nn); + status = lookup_clientid(clid, cstate, nn, false); if (status) return nfserr_reclaim_bad; -- cgit v1.2.3 From 51100d2b87cba12b09db79fa6577adccc0c2d14f Mon Sep 17 00:00:00 2001 From: Olga Kornievskaia Date: Thu, 13 Sep 2018 13:58:24 -0400 Subject: NFSD generalize nfsd4_compound_state flag names Allow for sid_flag field non-stateid use. Signed-off-by: Andy Adamson --- fs/nfsd/nfs4proc.c | 8 ++++---- fs/nfsd/nfs4state.c | 7 ++++--- fs/nfsd/xdr4.h | 6 +++--- 3 files changed, 11 insertions(+), 10 deletions(-) diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c index dee5aec098fd..8cc9f6e91874 100644 --- a/fs/nfsd/nfs4proc.c +++ b/fs/nfsd/nfs4proc.c @@ -531,9 +531,9 @@ nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, return nfserr_restorefh; fh_dup2(&cstate->current_fh, &cstate->save_fh); - if (HAS_STATE_ID(cstate, SAVED_STATE_ID_FLAG)) { + if (HAS_CSTATE_FLAG(cstate, SAVED_STATE_ID_FLAG)) { memcpy(&cstate->current_stateid, &cstate->save_stateid, sizeof(stateid_t)); - SET_STATE_ID(cstate, CURRENT_STATE_ID_FLAG); + SET_CSTATE_FLAG(cstate, CURRENT_STATE_ID_FLAG); } return nfs_ok; } @@ -543,9 +543,9 @@ nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, union nfsd4_op_u *u) { fh_dup2(&cstate->save_fh, &cstate->current_fh); - if (HAS_STATE_ID(cstate, CURRENT_STATE_ID_FLAG)) { + if (HAS_CSTATE_FLAG(cstate, CURRENT_STATE_ID_FLAG)) { memcpy(&cstate->save_stateid, &cstate->current_stateid, sizeof(stateid_t)); - SET_STATE_ID(cstate, SAVED_STATE_ID_FLAG); + SET_CSTATE_FLAG(cstate, SAVED_STATE_ID_FLAG); } return nfs_ok; } diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 31b71aed4230..ed5e80b3ac1f 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -7930,7 +7930,8 @@ nfs4_state_shutdown(void) static void get_stateid(struct nfsd4_compound_state *cstate, stateid_t *stateid) { - if (HAS_STATE_ID(cstate, CURRENT_STATE_ID_FLAG) && CURRENT_STATEID(stateid)) + if (HAS_CSTATE_FLAG(cstate, CURRENT_STATE_ID_FLAG) && + CURRENT_STATEID(stateid)) memcpy(stateid, &cstate->current_stateid, sizeof(stateid_t)); } @@ -7939,14 +7940,14 @@ put_stateid(struct nfsd4_compound_state *cstate, stateid_t *stateid) { if (cstate->minorversion) { memcpy(&cstate->current_stateid, stateid, sizeof(stateid_t)); - SET_STATE_ID(cstate, CURRENT_STATE_ID_FLAG); + SET_CSTATE_FLAG(cstate, CURRENT_STATE_ID_FLAG); } } void clear_current_stateid(struct nfsd4_compound_state *cstate) { - CLEAR_STATE_ID(cstate, CURRENT_STATE_ID_FLAG); + CLEAR_CSTATE_FLAG(cstate, CURRENT_STATE_ID_FLAG); } /* diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h index 2937e06f3554..0b4fe0795b72 100644 --- a/fs/nfsd/xdr4.h +++ b/fs/nfsd/xdr4.h @@ -46,9 +46,9 @@ #define CURRENT_STATE_ID_FLAG (1<<0) #define SAVED_STATE_ID_FLAG (1<<1) -#define SET_STATE_ID(c, f) ((c)->sid_flags |= (f)) -#define HAS_STATE_ID(c, f) ((c)->sid_flags & (f)) -#define CLEAR_STATE_ID(c, f) ((c)->sid_flags &= ~(f)) +#define SET_CSTATE_FLAG(c, f) ((c)->sid_flags |= (f)) +#define HAS_CSTATE_FLAG(c, f) ((c)->sid_flags & (f)) +#define CLEAR_CSTATE_FLAG(c, f) ((c)->sid_flags &= ~(f)) struct nfsd4_compound_state { struct svc_fh current_fh; -- cgit v1.2.3 From b9e8638e3d9ed8334f1f7071e081860aac37e83e Mon Sep 17 00:00:00 2001 From: Olga Kornievskaia Date: Mon, 7 Oct 2019 10:56:48 -0400 Subject: NFSD: allow inter server COPY to have a STALE source server fh The inter server to server COPY source server filehandle is a foreign filehandle as the COPY is sent to the destination server. Signed-off-by: Olga Kornievskaia --- fs/nfsd/Kconfig | 10 ++++++++++ fs/nfsd/nfs4proc.c | 57 ++++++++++++++++++++++++++++++++++++++++++++++++++---- fs/nfsd/nfsfh.h | 5 ++++- fs/nfsd/xdr4.h | 1 + 4 files changed, 68 insertions(+), 5 deletions(-) diff --git a/fs/nfsd/Kconfig b/fs/nfsd/Kconfig index f2f81561ebb6..f368f3215f88 100644 --- a/fs/nfsd/Kconfig +++ b/fs/nfsd/Kconfig @@ -134,6 +134,16 @@ config NFSD_FLEXFILELAYOUT If unsure, say N. +config NFSD_V4_2_INTER_SSC + bool "NFSv4.2 inter server to server COPY" + depends on NFSD_V4 && NFS_V4_1 && NFS_V4_2 + help + This option enables support for NFSv4.2 inter server to + server copy where the destination server calls the NFSv4.2 + client to read the data to copy from the source server. + + If unsure, say N. + config NFSD_V4_SECURITY_LABEL bool "Provide Security Label support for NFSv4 server" depends on NFSD_V4 && SECURITY diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c index 8cc9f6e91874..816777c12bc7 100644 --- a/fs/nfsd/nfs4proc.c +++ b/fs/nfsd/nfs4proc.c @@ -504,12 +504,20 @@ nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, union nfsd4_op_u *u) { struct nfsd4_putfh *putfh = &u->putfh; + __be32 ret; fh_put(&cstate->current_fh); cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen; memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval, putfh->pf_fhlen); - return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_BYPASS_GSS); + ret = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_BYPASS_GSS); +#ifdef CONFIG_NFSD_V4_2_INTER_SSC + if (ret == nfserr_stale && putfh->no_verify) { + SET_FH_FLAG(&cstate->current_fh, NFSD4_FH_FOREIGN); + ret = 0; + } +#endif + return ret; } static __be32 @@ -1957,6 +1965,45 @@ static void svcxdr_init_encode(struct svc_rqst *rqstp, - rqstp->rq_auth_slack; } +#ifdef CONFIG_NFSD_V4_2_INTER_SSC +static void +check_if_stalefh_allowed(struct nfsd4_compoundargs *args) +{ + struct nfsd4_op *op, *current_op = NULL, *saved_op = NULL; + struct nfsd4_copy *copy; + struct nfsd4_putfh *putfh; + int i; + + /* traverse all operation and if it's a COPY compound, mark the + * source filehandle to skip verification + */ + for (i = 0; i < args->opcnt; i++) { + op = &args->ops[i]; + if (op->opnum == OP_PUTFH) + current_op = op; + else if (op->opnum == OP_SAVEFH) + saved_op = current_op; + else if (op->opnum == OP_RESTOREFH) + current_op = saved_op; + else if (op->opnum == OP_COPY) { + copy = (struct nfsd4_copy *)&op->u; + if (!saved_op) { + op->status = nfserr_nofilehandle; + return; + } + putfh = (struct nfsd4_putfh *)&saved_op->u; + if (!copy->cp_intra) + putfh->no_verify = true; + } + } +} +#else +static void +check_if_stalefh_allowed(struct nfsd4_compoundargs *args) +{ +} +#endif + /* * COMPOUND call. */ @@ -2005,6 +2052,7 @@ nfsd4_proc_compound(struct svc_rqst *rqstp) resp->opcnt = 1; goto encode_op; } + check_if_stalefh_allowed(args); trace_nfsd_compound(rqstp, args->opcnt); while (!status && resp->opcnt < args->opcnt) { @@ -2020,13 +2068,14 @@ nfsd4_proc_compound(struct svc_rqst *rqstp) op->status = nfsd4_open_omfg(rqstp, cstate, op); goto encode_op; } - - if (!current_fh->fh_dentry) { + if (!current_fh->fh_dentry && + !HAS_FH_FLAG(current_fh, NFSD4_FH_FOREIGN)) { if (!(op->opdesc->op_flags & ALLOWED_WITHOUT_FH)) { op->status = nfserr_nofilehandle; goto encode_op; } - } else if (current_fh->fh_export->ex_fslocs.migrated && + } else if (current_fh->fh_export && + current_fh->fh_export->ex_fslocs.migrated && !(op->opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) { op->status = nfserr_moved; goto encode_op; diff --git a/fs/nfsd/nfsfh.h b/fs/nfsd/nfsfh.h index 755e256a9103..b9c75680bc31 100644 --- a/fs/nfsd/nfsfh.h +++ b/fs/nfsd/nfsfh.h @@ -35,7 +35,7 @@ typedef struct svc_fh { bool fh_locked; /* inode locked by us */ bool fh_want_write; /* remount protection taken */ - + int fh_flags; /* FH flags */ #ifdef CONFIG_NFSD_V3 bool fh_post_saved; /* post-op attrs saved */ bool fh_pre_saved; /* pre-op attrs saved */ @@ -56,6 +56,9 @@ typedef struct svc_fh { #endif /* CONFIG_NFSD_V3 */ } svc_fh; +#define NFSD4_FH_FOREIGN (1<<0) +#define SET_FH_FLAG(c, f) ((c)->fh_flags |= (f)) +#define HAS_FH_FLAG(c, f) ((c)->fh_flags & (f)) enum nfsd_fsid { FSID_DEV = 0, diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h index 0b4fe0795b72..b16f602af8f1 100644 --- a/fs/nfsd/xdr4.h +++ b/fs/nfsd/xdr4.h @@ -221,6 +221,7 @@ struct nfsd4_lookup { struct nfsd4_putfh { u32 pf_fhlen; /* request */ char *pf_fhval; /* request */ + bool no_verify; /* represents foreigh fh */ }; struct nfsd4_open { -- cgit v1.2.3 From ce0887ac96d35c7105090e166bb0807dc0a0e838 Mon Sep 17 00:00:00 2001 From: Olga Kornievskaia Date: Wed, 9 Oct 2019 11:50:48 -0400 Subject: NFSD add nfs4 inter ssc to nfsd4_copy Given a universal address, mount the source server from the destination server. Use an internal mount. Call the NFS client nfs42_ssc_open to obtain the NFS struct file suitable for nfsd_copy_range. Ability to do "inter" server-to-server depends on the an nfsd kernel parameter "inter_copy_offload_enable". Signed-off-by: Olga Kornievskaia --- fs/nfsd/nfs4proc.c | 293 ++++++++++++++++++++++++++++++++++++++++++++++++---- fs/nfsd/nfs4state.c | 15 ++- fs/nfsd/nfssvc.c | 6 ++ fs/nfsd/state.h | 3 + fs/nfsd/xdr4.h | 5 + 5 files changed, 295 insertions(+), 27 deletions(-) diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c index 816777c12bc7..fc72f5729732 100644 --- a/fs/nfsd/nfs4proc.c +++ b/fs/nfsd/nfs4proc.c @@ -1144,6 +1144,208 @@ void nfsd4_shutdown_copy(struct nfs4_client *clp) while ((copy = nfsd4_get_copy(clp)) != NULL) nfsd4_stop_copy(copy); } +#ifdef CONFIG_NFSD_V4_2_INTER_SSC + +extern struct file *nfs42_ssc_open(struct vfsmount *ss_mnt, + struct nfs_fh *src_fh, + nfs4_stateid *stateid); +extern void nfs42_ssc_close(struct file *filep); + +extern void nfs_sb_deactive(struct super_block *sb); + +#define NFSD42_INTERSSC_MOUNTOPS "vers=4.2,addr=%s,sec=sys" + +/** + * Support one copy source server for now. + */ +static __be32 +nfsd4_interssc_connect(struct nl4_server *nss, struct svc_rqst *rqstp, + struct vfsmount **mount) +{ + struct file_system_type *type; + struct vfsmount *ss_mnt; + struct nfs42_netaddr *naddr; + struct sockaddr_storage tmp_addr; + size_t tmp_addrlen, match_netid_len = 3; + char *startsep = "", *endsep = "", *match_netid = "tcp"; + char *ipaddr, *dev_name, *raw_data; + int len, raw_len, status = -EINVAL; + + naddr = &nss->u.nl4_addr; + tmp_addrlen = rpc_uaddr2sockaddr(SVC_NET(rqstp), naddr->addr, + naddr->addr_len, + (struct sockaddr *)&tmp_addr, + sizeof(tmp_addr)); + if (tmp_addrlen == 0) + goto out_err; + + if (tmp_addr.ss_family == AF_INET6) { + startsep = "["; + endsep = "]"; + match_netid = "tcp6"; + match_netid_len = 4; + } + + if (naddr->netid_len != match_netid_len || + strncmp(naddr->netid, match_netid, naddr->netid_len)) + goto out_err; + + /* Construct the raw data for the vfs_kern_mount call */ + len = RPC_MAX_ADDRBUFLEN + 1; + ipaddr = kzalloc(len, GFP_KERNEL); + if (!ipaddr) + goto out_err; + + rpc_ntop((struct sockaddr *)&tmp_addr, ipaddr, len); + + /* 2 for ipv6 endsep and startsep. 3 for ":/" and trailing '/0'*/ + + raw_len = strlen(NFSD42_INTERSSC_MOUNTOPS) + strlen(ipaddr); + raw_data = kzalloc(raw_len, GFP_KERNEL); + if (!raw_data) + goto out_free_ipaddr; + + snprintf(raw_data, raw_len, NFSD42_INTERSSC_MOUNTOPS, ipaddr); + + status = -ENODEV; + type = get_fs_type("nfs"); + if (!type) + goto out_free_rawdata; + + /* Set the server: for the vfs_kern_mount call */ + dev_name = kzalloc(len + 5, GFP_KERNEL); + if (!dev_name) + goto out_free_rawdata; + snprintf(dev_name, len + 5, "%s%s%s:/", startsep, ipaddr, endsep); + + /* Use an 'internal' mount: SB_KERNMOUNT -> MNT_INTERNAL */ + ss_mnt = vfs_kern_mount(type, SB_KERNMOUNT, dev_name, raw_data); + module_put(type->owner); + if (IS_ERR(ss_mnt)) + goto out_free_devname; + + status = 0; + *mount = ss_mnt; + +out_free_devname: + kfree(dev_name); +out_free_rawdata: + kfree(raw_data); +out_free_ipaddr: + kfree(ipaddr); +out_err: + return status; +} + +static void +nfsd4_interssc_disconnect(struct vfsmount *ss_mnt) +{ + nfs_sb_deactive(ss_mnt->mnt_sb); + mntput(ss_mnt); +} + +/** + * nfsd4_setup_inter_ssc + * + * Verify COPY destination stateid. + * Connect to the source server with NFSv4.1. + * Create the source struct file for nfsd_copy_range. + * Called with COPY cstate: + * SAVED_FH: source filehandle + * CURRENT_FH: destination filehandle + * + * Returns errno (not nfserrxxx) + */ +static __be32 +nfsd4_setup_inter_ssc(struct svc_rqst *rqstp, + struct nfsd4_compound_state *cstate, + struct nfsd4_copy *copy, struct vfsmount **mount) +{ + struct svc_fh *s_fh = NULL; + stateid_t *s_stid = ©->cp_src_stateid; + __be32 status = -EINVAL; + + /* Verify the destination stateid and set dst struct file*/ + status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh, + ©->cp_dst_stateid, + WR_STATE, ©->nf_dst, NULL); + if (status) + goto out; + + status = nfsd4_interssc_connect(©->cp_src, rqstp, mount); + if (status) + goto out; + + s_fh = &cstate->save_fh; + + copy->c_fh.size = s_fh->fh_handle.fh_size; + memcpy(copy->c_fh.data, &s_fh->fh_handle.fh_base, copy->c_fh.size); + copy->stateid.seqid = s_stid->si_generation; + memcpy(copy->stateid.other, (void *)&s_stid->si_opaque, + sizeof(stateid_opaque_t)); + + status = 0; +out: + return status; +} + +static void +nfsd4_cleanup_inter_ssc(struct vfsmount *ss_mnt, struct nfsd_file *src, + struct nfsd_file *dst) +{ + nfs42_ssc_close(src->nf_file); + nfsd_file_put(src); + nfsd_file_put(dst); + mntput(ss_mnt); +} + +#else /* CONFIG_NFSD_V4_2_INTER_SSC */ + +static __be32 +nfsd4_setup_inter_ssc(struct svc_rqst *rqstp, + struct nfsd4_compound_state *cstate, + struct nfsd4_copy *copy, + struct vfsmount **mount) +{ + *mount = NULL; + return -EINVAL; +} + +static void +nfsd4_cleanup_inter_ssc(struct vfsmount *ss_mnt, struct nfsd_file *src, + struct nfsd_file *dst) +{ +} + +static void +nfsd4_interssc_disconnect(struct vfsmount *ss_mnt) +{ +} + +static struct file *nfs42_ssc_open(struct vfsmount *ss_mnt, + struct nfs_fh *src_fh, + nfs4_stateid *stateid) +{ + return NULL; +} +#endif /* CONFIG_NFSD_V4_2_INTER_SSC */ + +static __be32 +nfsd4_setup_intra_ssc(struct svc_rqst *rqstp, + struct nfsd4_compound_state *cstate, + struct nfsd4_copy *copy) +{ + return nfsd4_verify_copy(rqstp, cstate, ©->cp_src_stateid, + ©->nf_src, ©->cp_dst_stateid, + ©->nf_dst); +} + +static void +nfsd4_cleanup_intra_ssc(struct nfsd_file *src, struct nfsd_file *dst) +{ + nfsd_file_put(src); + nfsd_file_put(dst); +} static void nfsd4_cb_offload_release(struct nfsd4_callback *cb) { @@ -1209,12 +1411,16 @@ static __be32 nfsd4_do_copy(struct nfsd4_copy *copy, bool sync) status = nfs_ok; } - nfsd_file_put(copy->nf_src); - nfsd_file_put(copy->nf_dst); + if (!copy->cp_intra) /* Inter server SSC */ + nfsd4_cleanup_inter_ssc(copy->ss_mnt, copy->nf_src, + copy->nf_dst); + else + nfsd4_cleanup_intra_ssc(copy->nf_src, copy->nf_dst); + return status; } -static void dup_copy_fields(struct nfsd4_copy *src, struct nfsd4_copy *dst) +static int dup_copy_fields(struct nfsd4_copy *src, struct nfsd4_copy *dst) { dst->cp_src_pos = src->cp_src_pos; dst->cp_dst_pos = src->cp_dst_pos; @@ -1224,8 +1430,17 @@ static void dup_copy_fields(struct nfsd4_copy *src, struct nfsd4_copy *dst) memcpy(&dst->fh, &src->fh, sizeof(src->fh)); dst->cp_clp = src->cp_clp; dst->nf_dst = nfsd_file_get(src->nf_dst); - dst->nf_src = nfsd_file_get(src->nf_src); + dst->cp_intra = src->cp_intra; + if (src->cp_intra) /* for inter, file_src doesn't exist yet */ + dst->nf_src = nfsd_file_get(src->nf_src); + memcpy(&dst->cp_stateid, &src->cp_stateid, sizeof(src->cp_stateid)); + memcpy(&dst->cp_src, &src->cp_src, sizeof(struct nl4_server)); + memcpy(&dst->stateid, &src->stateid, sizeof(src->stateid)); + memcpy(&dst->c_fh, &src->c_fh, sizeof(src->c_fh)); + dst->ss_mnt = src->ss_mnt; + + return 0; } static void cleanup_async_copy(struct nfsd4_copy *copy) @@ -1244,7 +1459,25 @@ static int nfsd4_do_async_copy(void *data) struct nfsd4_copy *copy = (struct nfsd4_copy *)data; struct nfsd4_copy *cb_copy; + if (!copy->cp_intra) { /* Inter server SSC */ + copy->nf_src = kzalloc(sizeof(struct nfsd_file), GFP_KERNEL); + if (!copy->nf_src) { + copy->nfserr = nfserr_serverfault; + nfsd4_interssc_disconnect(copy->ss_mnt); + goto do_callback; + } + copy->nf_src->nf_file = nfs42_ssc_open(copy->ss_mnt, ©->c_fh, + ©->stateid); + if (IS_ERR(copy->nf_src->nf_file)) { + kfree(copy->nf_src); + copy->nfserr = nfserr_offload_denied; + nfsd4_interssc_disconnect(copy->ss_mnt); + goto do_callback; + } + } + copy->nfserr = nfsd4_do_copy(copy, 0); +do_callback: cb_copy = kzalloc(sizeof(struct nfsd4_copy), GFP_KERNEL); if (!cb_copy) goto out; @@ -1256,6 +1489,8 @@ static int nfsd4_do_async_copy(void *data) &nfsd4_cb_offload_ops, NFSPROC4_CLNT_CB_OFFLOAD); nfsd4_run_cb(&cb_copy->cp_cb); out: + if (!copy->cp_intra) + kfree(copy->nf_src); cleanup_async_copy(copy); return 0; } @@ -1268,11 +1503,20 @@ nfsd4_copy(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, __be32 status; struct nfsd4_copy *async_copy = NULL; - status = nfsd4_verify_copy(rqstp, cstate, ©->cp_src_stateid, - ©->nf_src, ©->cp_dst_stateid, - ©->nf_dst); - if (status) - goto out; + if (!copy->cp_intra) { /* Inter server SSC */ + if (!inter_copy_offload_enable || copy->cp_synchronous) { + status = nfserr_notsupp; + goto out; + } + status = nfsd4_setup_inter_ssc(rqstp, cstate, copy, + ©->ss_mnt); + if (status) + return nfserr_offload_denied; + } else { + status = nfsd4_setup_intra_ssc(rqstp, cstate, copy); + if (status) + return status; + } copy->cp_clp = cstate->clp; memcpy(©->fh, &cstate->current_fh.fh_handle, @@ -1283,15 +1527,15 @@ nfsd4_copy(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, status = nfserrno(-ENOMEM); async_copy = kzalloc(sizeof(struct nfsd4_copy), GFP_KERNEL); if (!async_copy) - goto out; - if (!nfs4_init_copy_state(nn, copy)) { - kfree(async_copy); - goto out; - } + goto out_err; + if (!nfs4_init_copy_state(nn, copy)) + goto out_err; refcount_set(&async_copy->refcount, 1); memcpy(©->cp_res.cb_stateid, ©->cp_stateid, sizeof(copy->cp_stateid)); - dup_copy_fields(copy, async_copy); + status = dup_copy_fields(copy, async_copy); + if (status) + goto out_err; async_copy->copy_task = kthread_create(nfsd4_do_async_copy, async_copy, "%s", "copy thread"); if (IS_ERR(async_copy->copy_task)) @@ -1302,13 +1546,17 @@ nfsd4_copy(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, spin_unlock(&async_copy->cp_clp->async_lock); wake_up_process(async_copy->copy_task); status = nfs_ok; - } else + } else { status = nfsd4_do_copy(copy, 1); + } out: return status; out_err: if (async_copy) cleanup_async_copy(async_copy); + status = nfserrno(-ENOMEM); + if (!copy->cp_intra) + nfsd4_interssc_disconnect(copy->ss_mnt); goto out; } @@ -1319,7 +1567,7 @@ find_async_copy(struct nfs4_client *clp, stateid_t *stateid) spin_lock(&clp->async_lock); list_for_each_entry(copy, &clp->async_copies, copies) { - if (memcmp(©->cp_stateid, stateid, NFS4_STATEID_SIZE)) + if (memcmp(©->cp_stateid.stid, stateid, NFS4_STATEID_SIZE)) continue; refcount_inc(©->refcount); spin_unlock(&clp->async_lock); @@ -1335,17 +1583,18 @@ nfsd4_offload_cancel(struct svc_rqst *rqstp, union nfsd4_op_u *u) { struct nfsd4_offload_status *os = &u->offload_status; - __be32 status = 0; struct nfsd4_copy *copy; struct nfs4_client *clp = cstate->clp; copy = find_async_copy(clp, &os->stateid); - if (copy) + if (!copy) { + struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); + + return manage_cpntf_state(nn, &os->stateid, clp, NULL); + } else nfsd4_stop_copy(copy); - else - status = nfserr_bad_stateid; - return status; + return nfs_ok; } static __be32 diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index ed5e80b3ac1f..296765e693d0 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -5681,8 +5681,9 @@ _free_cpntf_state_locked(struct nfsd_net *nn, struct nfs4_cpntf_state *cps) * copy stateid. Look up the copy notify stateid from the * idr structure and take a reference on it. */ -static __be32 _find_cpntf_state(struct nfsd_net *nn, stateid_t *st, - struct nfs4_cpntf_state **cps) +__be32 manage_cpntf_state(struct nfsd_net *nn, stateid_t *st, + struct nfs4_client *clp, + struct nfs4_cpntf_state **cps) { copy_stateid_t *cps_t; struct nfs4_cpntf_state *state = NULL; @@ -5696,12 +5697,16 @@ static __be32 _find_cpntf_state(struct nfsd_net *nn, stateid_t *st, cp_stateid); if (state->cp_stateid.sc_type != NFS4_COPYNOTIFY_STID) return nfserr_bad_stateid; - refcount_inc(&state->cp_stateid.sc_count); + if (!clp) + refcount_inc(&state->cp_stateid.sc_count); + else + _free_cpntf_state_locked(nn, state); } spin_unlock(&nn->s2s_cp_lock); if (!state) return nfserr_bad_stateid; - *cps = state; + if (!clp && state) + *cps = state; return 0; } @@ -5712,7 +5717,7 @@ static __be32 find_cpntf_state(struct nfsd_net *nn, stateid_t *st, struct nfs4_cpntf_state *cps = NULL; struct nfsd4_compound_state cstate; - status = _find_cpntf_state(nn, st, &cps); + status = manage_cpntf_state(nn, st, NULL, &cps); if (status) return status; diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c index e8bee8ff30c5..c720097a9149 100644 --- a/fs/nfsd/nfssvc.c +++ b/fs/nfsd/nfssvc.c @@ -31,6 +31,12 @@ #define NFSDDBG_FACILITY NFSDDBG_SVC +bool inter_copy_offload_enable; +EXPORT_SYMBOL_GPL(inter_copy_offload_enable); +module_param(inter_copy_offload_enable, bool, 0644); +MODULE_PARM_DESC(inter_copy_offload_enable, + "Enable inter server to server copy offload. Default: false"); + extern struct svc_program nfsd_program; static int nfsd(void *vrqstp); #if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL) diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h index 35eb7170aefc..ffc590de016b 100644 --- a/fs/nfsd/state.h +++ b/fs/nfsd/state.h @@ -680,6 +680,9 @@ extern struct nfsd4_copy * find_async_copy(struct nfs4_client *clp, stateid_t *staetid); extern void nfs4_put_cpntf_state(struct nfsd_net *nn, struct nfs4_cpntf_state *cps); +extern __be32 manage_cpntf_state(struct nfsd_net *nn, stateid_t *st, + struct nfs4_client *clp, + struct nfs4_cpntf_state **cps); static inline void get_nfs4_file(struct nfs4_file *fi) { refcount_inc(&fi->fi_ref); diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h index b16f602af8f1..db63d39b1507 100644 --- a/fs/nfsd/xdr4.h +++ b/fs/nfsd/xdr4.h @@ -549,7 +549,12 @@ struct nfsd4_copy { struct task_struct *copy_task; refcount_t refcount; bool stopped; + + struct vfsmount *ss_mnt; + struct nfs_fh c_fh; + nfs4_stateid stateid; }; +extern bool inter_copy_offload_enable; struct nfsd4_seek { /* request */ -- cgit v1.2.3 From 5277a79e2dee458f0185e4ebde1cd4e128f014e9 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Wed, 4 Dec 2019 10:59:36 +0300 Subject: nfsd: unlock on error in manage_cpntf_state() We are holding the "nn->s2s_cp_lock" so we can't return directly without unlocking first. Fixes: f3dee17721a0 ("NFSD check stateids against copy stateids") Signed-off-by: Dan Carpenter Signed-off-by: J. Bruce Fields --- fs/nfsd/nfs4state.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 296765e693d0..390ad454a229 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -5695,13 +5695,16 @@ __be32 manage_cpntf_state(struct nfsd_net *nn, stateid_t *st, if (cps_t) { state = container_of(cps_t, struct nfs4_cpntf_state, cp_stateid); - if (state->cp_stateid.sc_type != NFS4_COPYNOTIFY_STID) - return nfserr_bad_stateid; + if (state->cp_stateid.sc_type != NFS4_COPYNOTIFY_STID) { + state = NULL; + goto unlock; + } if (!clp) refcount_inc(&state->cp_stateid.sc_count); else _free_cpntf_state_locked(nn, state); } +unlock: spin_unlock(&nn->s2s_cp_lock); if (!state) return nfserr_bad_stateid; -- cgit v1.2.3 From 10db651210b2c618eb90a7fea4d6c5132bba7982 Mon Sep 17 00:00:00 2001 From: Olga Kornievskaia Date: Wed, 4 Dec 2019 15:13:52 -0500 Subject: NFSD fix mismatching type in nfsd4_set_netaddr Fix __be32 and u32 mismatch in return and assignment. Reported-by: kbuild test robot Fixes: dbd4c2dd8f13 ("NFSD add COPY_NOTIFY operation") Signed-off-by: Olga Kornievskaia Signed-off-by: J. Bruce Fields --- fs/nfsd/nfsd.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/nfsd/nfsd.h b/fs/nfsd/nfsd.h index 0ff6ef964a48..c679afd9fee9 100644 --- a/fs/nfsd/nfsd.h +++ b/fs/nfsd/nfsd.h @@ -388,7 +388,7 @@ void nfsd_lockd_shutdown(void); extern const u32 nfsd_suppattrs[3][3]; -static inline u32 nfsd4_set_netaddr(struct sockaddr *addr, +static inline __be32 nfsd4_set_netaddr(struct sockaddr *addr, struct nfs42_netaddr *netaddr) { struct sockaddr_in *sin = (struct sockaddr_in *)addr; -- cgit v1.2.3 From 3f9544ca62bc13cf1c145d1deae7bf3270730e0a Mon Sep 17 00:00:00 2001 From: Olga Kornievskaia Date: Wed, 4 Dec 2019 15:13:53 -0500 Subject: NFSD: fix seqid in copy stateid s_stid->si_generation is a u32, copy->stateid.seqid is a __be32, so we should be byte-swapping here if necessary. This effectively undoes the byte-swap performed when reading s_stid->s_generation in nfsd4_decode_copy(). Without this second swap, the stateid we sent to the source in READ could be different from the one the client provided us in the COPY. We didn't spot this in testing since our implementation always uses a 0 in the seqid field. But other implementations might not do that. You'd think we should just skip the byte-swapping entirely, but the s_stid field can be used for either our own stateids (in the intra-server case) or foreign stateids (in the inter-server case), and the former are interpreted by us and need byte-swapping. Reported-by: kbuild test robot Fixes: d5e54eeb0e3d ("NFSD add nfs4 inter ssc to nfsd4_copy") Signed-off-by: Olga Kornievskaia Signed-off-by: J. Bruce Fields --- fs/nfsd/nfs4proc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c index fc72f5729732..42fee1f94a84 100644 --- a/fs/nfsd/nfs4proc.c +++ b/fs/nfsd/nfs4proc.c @@ -1280,7 +1280,7 @@ nfsd4_setup_inter_ssc(struct svc_rqst *rqstp, copy->c_fh.size = s_fh->fh_handle.fh_size; memcpy(copy->c_fh.data, &s_fh->fh_handle.fh_base, copy->c_fh.size); - copy->stateid.seqid = s_stid->si_generation; + copy->stateid.seqid = cpu_to_be32(s_stid->si_generation); memcpy(copy->stateid.other, (void *)&s_stid->si_opaque, sizeof(stateid_opaque_t)); -- cgit v1.2.3 From b8290ca250fb773aeaf76995af84825e7509d0d3 Mon Sep 17 00:00:00 2001 From: Olga Kornievskaia Date: Wed, 4 Dec 2019 15:13:53 -0500 Subject: NFSD fix nfserro errno mismatch There is mismatch between __be32 and u32 in nfserr and errno. Reported-by: kbuild test robot Fixes: d5e54eeb0e3d ("NFSD add nfs4 inter ssc to nfsd4_copy") Signed-off-by: Olga Kornievskaia Signed-off-by: J. Bruce Fields --- fs/nfsd/nfs4proc.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c index 42fee1f94a84..d012f0894fab 100644 --- a/fs/nfsd/nfs4proc.c +++ b/fs/nfsd/nfs4proc.c @@ -1169,7 +1169,8 @@ nfsd4_interssc_connect(struct nl4_server *nss, struct svc_rqst *rqstp, size_t tmp_addrlen, match_netid_len = 3; char *startsep = "", *endsep = "", *match_netid = "tcp"; char *ipaddr, *dev_name, *raw_data; - int len, raw_len, status = -EINVAL; + int len, raw_len; + __be32 status = nfserr_inval; naddr = &nss->u.nl4_addr; tmp_addrlen = rpc_uaddr2sockaddr(SVC_NET(rqstp), naddr->addr, @@ -1207,7 +1208,7 @@ nfsd4_interssc_connect(struct nl4_server *nss, struct svc_rqst *rqstp, snprintf(raw_data, raw_len, NFSD42_INTERSSC_MOUNTOPS, ipaddr); - status = -ENODEV; + status = nfserr_nodev; type = get_fs_type("nfs"); if (!type) goto out_free_rawdata; @@ -1253,8 +1254,6 @@ nfsd4_interssc_disconnect(struct vfsmount *ss_mnt) * Called with COPY cstate: * SAVED_FH: source filehandle * CURRENT_FH: destination filehandle - * - * Returns errno (not nfserrxxx) */ static __be32 nfsd4_setup_inter_ssc(struct svc_rqst *rqstp, @@ -1263,7 +1262,7 @@ nfsd4_setup_inter_ssc(struct svc_rqst *rqstp, { struct svc_fh *s_fh = NULL; stateid_t *s_stid = ©->cp_src_stateid; - __be32 status = -EINVAL; + __be32 status = nfserr_inval; /* Verify the destination stateid and set dst struct file*/ status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh, @@ -1308,7 +1307,7 @@ nfsd4_setup_inter_ssc(struct svc_rqst *rqstp, struct vfsmount **mount) { *mount = NULL; - return -EINVAL; + return nfserr_inval; } static void -- cgit v1.2.3 From 2e577f0faca4640348c398cb85d60a1eedac4b1e Mon Sep 17 00:00:00 2001 From: Olga Kornievskaia Date: Wed, 4 Dec 2019 15:13:54 -0500 Subject: NFSD fixing possible null pointer derefering in copy offload Static checker revealed possible error path leading to possible NULL pointer dereferencing. Reported-by: Dan Carpenter Fixes: e0639dc5805a: ("NFSD introduce async copy feature") Signed-off-by: Olga Kornievskaia Signed-off-by: J. Bruce Fields --- fs/nfsd/nfs4proc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c index d012f0894fab..d33c39c18cdd 100644 --- a/fs/nfsd/nfs4proc.c +++ b/fs/nfsd/nfs4proc.c @@ -1446,7 +1446,8 @@ static void cleanup_async_copy(struct nfsd4_copy *copy) { nfs4_free_copy_state(copy); nfsd_file_put(copy->nf_dst); - nfsd_file_put(copy->nf_src); + if (copy->cp_intra) + nfsd_file_put(copy->nf_src); spin_lock(©->cp_clp->async_lock); list_del(©->copies); spin_unlock(©->cp_clp->async_lock); -- cgit v1.2.3 From d781e3df710745fbbaee4eb07fd5b64331a1b175 Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Fri, 6 Dec 2019 16:07:32 -0500 Subject: nfsd4: avoid NULL deference on strange COPY compounds With cross-server COPY we've introduced the possibility that the current or saved filehandle might not have fh_dentry/fh_export filled in, but we missed a place that assumed it was. I think this could be triggered by a compound like: PUTFH(foreign filehandle) GETATTR SAVEFH COPY First, check_if_stalefh_allowed sets no_verify on the first (PUTFH) op. Then op_func = nfsd4_putfh runs and leaves current_fh->fh_export NULL. need_wrongsec_check returns true, since this PUTFH has OP_IS_PUTFH_LIKE set and GETATTR does not have OP_HANDLES_WRONGSEC set. We should probably also consider tightening the checks in check_if_stalefh_allowed and double-checking that we don't assume the filehandle is verified elsewhere in the compound. But I think this fixes the immediate issue. Reported-by: Dan Carpenter Fixes: 4e48f1cccab3 "NFSD: allow inter server COPY to have... " Signed-off-by: J. Bruce Fields --- fs/nfsd/nfs4proc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c index d33c39c18cdd..30c75b961d68 100644 --- a/fs/nfsd/nfs4pr