Return-Path: Received: from mx141.netapp.com ([216.240.21.12]:19225 "EHLO mx141.netapp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751663AbdI1RaK (ORCPT ); Thu, 28 Sep 2017 13:30:10 -0400 From: Olga Kornievskaia To: CC: Subject: [PATCH v4 2/8] NFSD add ca_source_server<> to COPY Date: Thu, 28 Sep 2017 13:29:56 -0400 Message-ID: <20170928173002.50818-3-kolga@netapp.com> In-Reply-To: <20170928173002.50818-1-kolga@netapp.com> References: <20170928173002.50818-1-kolga@netapp.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-nfs-owner@vger.kernel.org List-ID: Note: followed conventions and have struct nfsd4_compoundargs pointer as a parameter even though it is unused. Signed-off-by: Andy Adamson Signed-off-by: Olga Kornievskaia --- fs/nfsd/nfs4xdr.c | 71 +++++++++++++++++++++++++++++++++++++++++++++++++++++-- fs/nfsd/xdr4.h | 1 + 2 files changed, 70 insertions(+), 2 deletions(-) diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index 5f5058e..ea3a231 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -41,6 +41,7 @@ #include #include #include +#include #include "idmap.h" #include "acl.h" @@ -1743,11 +1744,58 @@ static __be32 nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs *argp, str 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_NAME: + case NL4_URL: + READ_BUF(4); + ns->u.nl4_str_sz = be32_to_cpup(p++); + if (ns->u.nl4_str_sz > NFS4_OPAQUE_LIMIT) + goto xdr_error; + + READ_BUF(ns->u.nl4_str_sz); + COPYMEM(ns->u.nl4_str, + ns->u.nl4_str_sz); + break; + 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; - unsigned int tmp; + struct nl4_server *ns; + int i, count; status = nfsd4_decode_stateid(argp, ©->cp_src_stateid); if (status) @@ -1762,8 +1810,24 @@ static __be32 nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs *argp, str p = xdr_decode_hyper(p, ©->cp_count); copy->cp_consecutive = be32_to_cpup(p++); copy->cp_synchronous = be32_to_cpup(p++); - tmp = be32_to_cpup(p); /* Source server list not supported */ + count = be32_to_cpup(p++); + + if (count == 0) /* intra-server copy */ + goto intra; + /* decode all the supplied server addresses but use first */ + copy->cp_src = kmalloc(count * sizeof(struct nl4_server), GFP_KERNEL); + if (copy->cp_src == NULL) + return nfserrno(-ENOMEM); + + ns = copy->cp_src; + for (i = 0; i < count; i++) { + status = nfsd4_decode_nl4_server(argp, ns); + if (status) + return status; + ns++; + } +intra: DECODE_TAIL; } @@ -4232,6 +4296,9 @@ static __be32 nfsd4_encode_readv(struct nfsd4_compoundres *resp, p = xdr_reserve_space(&resp->xdr, 4 + 4); *p++ = cpu_to_be32(copy->cp_consecutive); *p++ = cpu_to_be32(copy->cp_synchronous); + + /* allocated in nfsd4_decode_copy */ + kfree(copy->cp_src); return 0; } diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h index 4ccd43b..ac01bc6 100644 --- a/fs/nfsd/xdr4.h +++ b/fs/nfsd/xdr4.h @@ -517,6 +517,7 @@ struct nfsd4_copy { u64 cp_src_pos; u64 cp_dst_pos; u64 cp_count; + struct nl4_server *cp_src; /* both */ bool cp_consecutive; -- 1.8.3.1