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path: root/fs/nfs/nfs4xdr.c
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Diffstat (limited to 'fs/nfs/nfs4xdr.c')
-rw-r--r--fs/nfs/nfs4xdr.c113
1 files changed, 71 insertions, 42 deletions
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index cb4376b78ed9..e23a0a664e12 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -946,7 +946,10 @@ static void encode_uint64(struct xdr_stream *xdr, u64 n)
static void encode_nfs4_seqid(struct xdr_stream *xdr,
const struct nfs_seqid *seqid)
{
- encode_uint32(xdr, seqid->sequence->counter);
+ if (seqid != NULL)
+ encode_uint32(xdr, seqid->sequence->counter);
+ else
+ encode_uint32(xdr, 0);
}
static void encode_compound_hdr(struct xdr_stream *xdr,
@@ -1125,7 +1128,7 @@ static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg
{
encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr);
encode_nfs4_seqid(xdr, arg->seqid);
- encode_nfs4_stateid(xdr, arg->stateid);
+ encode_nfs4_stateid(xdr, &arg->stateid);
}
static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr)
@@ -1301,12 +1304,12 @@ static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args
*p = cpu_to_be32(args->new_lock_owner);
if (args->new_lock_owner){
encode_nfs4_seqid(xdr, args->open_seqid);
- encode_nfs4_stateid(xdr, args->open_stateid);
+ encode_nfs4_stateid(xdr, &args->open_stateid);
encode_nfs4_seqid(xdr, args->lock_seqid);
encode_lockowner(xdr, &args->lock_owner);
}
else {
- encode_nfs4_stateid(xdr, args->lock_stateid);
+ encode_nfs4_stateid(xdr, &args->lock_stateid);
encode_nfs4_seqid(xdr, args->lock_seqid);
}
}
@@ -1330,7 +1333,7 @@ static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *ar
encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr);
encode_uint32(xdr, nfs4_lock_type(args->fl, 0));
encode_nfs4_seqid(xdr, args->seqid);
- encode_nfs4_stateid(xdr, args->stateid);
+ encode_nfs4_stateid(xdr, &args->stateid);
p = reserve_space(xdr, 16);
p = xdr_encode_hyper(p, args->fl->fl_start);
xdr_encode_hyper(p, nfs4_lock_length(args->fl));
@@ -1348,24 +1351,12 @@ static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struc
encode_string(xdr, name->len, name->name);
}
-static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode)
+static void encode_share_access(struct xdr_stream *xdr, u32 share_access)
{
__be32 *p;
p = reserve_space(xdr, 8);
- switch (fmode & (FMODE_READ|FMODE_WRITE)) {
- case FMODE_READ:
- *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ);
- break;
- case FMODE_WRITE:
- *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE);
- break;
- case FMODE_READ|FMODE_WRITE:
- *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH);
- break;
- default:
- *p++ = cpu_to_be32(0);
- }
+ *p++ = cpu_to_be32(share_access);
*p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
}
@@ -1377,7 +1368,7 @@ static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_opena
* owner 4 = 32
*/
encode_nfs4_seqid(xdr, arg->seqid);
- encode_share_access(xdr, arg->fmode);
+ encode_share_access(xdr, arg->share_access);
p = reserve_space(xdr, 36);
p = xdr_encode_hyper(p, arg->clientid);
*p++ = cpu_to_be32(24);
@@ -1530,9 +1521,9 @@ static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_co
static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
{
encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr);
- encode_nfs4_stateid(xdr, arg->stateid);
+ encode_nfs4_stateid(xdr, &arg->stateid);
encode_nfs4_seqid(xdr, arg->seqid);
- encode_share_access(xdr, arg->fmode);
+ encode_share_access(xdr, arg->share_access);
}
static void
@@ -1801,9 +1792,8 @@ static void encode_create_session(struct xdr_stream *xdr,
struct compound_hdr *hdr)
{
__be32 *p;
- char machine_name[NFS4_MAX_MACHINE_NAME_LEN];
- uint32_t len;
struct nfs_client *clp = args->client;
+ struct rpc_clnt *clnt = clp->cl_rpcclient;
struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
u32 max_resp_sz_cached;
@@ -1814,11 +1804,8 @@ static void encode_create_session(struct xdr_stream *xdr,
max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE +
RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT;
- len = scnprintf(machine_name, sizeof(machine_name), "%s",
- clp->cl_ipaddr);
-
encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr);
- p = reserve_space(xdr, 16 + 2*28 + 20 + len + 12);
+ p = reserve_space(xdr, 16 + 2*28 + 20 + clnt->cl_nodelen + 12);
p = xdr_encode_hyper(p, clp->cl_clientid);
*p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */
*p++ = cpu_to_be32(args->flags); /*flags */
@@ -1847,7 +1834,7 @@ static void encode_create_session(struct xdr_stream *xdr,
/* authsys_parms rfc1831 */
*p++ = cpu_to_be32(nn->boot_time.tv_nsec); /* stamp */
- p = xdr_encode_opaque(p, machine_name, len);
+ p = xdr_encode_array(p, clnt->cl_nodename, clnt->cl_nodelen);
*p++ = cpu_to_be32(0); /* UID */
*p++ = cpu_to_be32(0); /* GID */
*p = cpu_to_be32(0); /* No more gids */
@@ -2012,11 +1999,11 @@ encode_layoutreturn(struct xdr_stream *xdr,
p = reserve_space(xdr, 16);
*p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
*p++ = cpu_to_be32(args->layout_type);
- *p++ = cpu_to_be32(IOMODE_ANY);
+ *p++ = cpu_to_be32(args->range.iomode);
*p = cpu_to_be32(RETURN_FILE);
p = reserve_space(xdr, 16);
- p = xdr_encode_hyper(p, 0);
- p = xdr_encode_hyper(p, NFS4_MAX_UINT64);
+ p = xdr_encode_hyper(p, args->range.offset);
+ p = xdr_encode_hyper(p, args->range.length);
spin_lock(&args->inode->i_lock);
encode_nfs4_stateid(xdr, &args->stateid);
spin_unlock(&args->inode->i_lock);
@@ -4936,20 +4923,13 @@ out_overflow:
return -EIO;
}
-static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
+static int decode_rw_delegation(struct xdr_stream *xdr,
+ uint32_t delegation_type,
+ struct nfs_openres *res)
{
__be32 *p;
- uint32_t delegation_type;
int status;
- p = xdr_inline_decode(xdr, 4);
- if (unlikely(!p))
- goto out_overflow;
- delegation_type = be32_to_cpup(p);
- if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
- res->delegation_type = 0;
- return 0;
- }
status = decode_stateid(xdr, &res->delegation);
if (unlikely(status))
return status;
@@ -4973,6 +4953,52 @@ out_overflow:
return -EIO;
}
+static int decode_no_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
+{
+ __be32 *p;
+ uint32_t why_no_delegation;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(!p))
+ goto out_overflow;
+ why_no_delegation = be32_to_cpup(p);
+ switch (why_no_delegation) {
+ case WND4_CONTENTION:
+ case WND4_RESOURCE:
+ xdr_inline_decode(xdr, 4);
+ /* Ignore for now */
+ }
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
+{
+ __be32 *p;
+ uint32_t delegation_type;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(!p))
+ goto out_overflow;
+ delegation_type = be32_to_cpup(p);
+ res->delegation_type = 0;
+ switch (delegation_type) {
+ case NFS4_OPEN_DELEGATE_NONE:
+ return 0;
+ case NFS4_OPEN_DELEGATE_READ:
+ case NFS4_OPEN_DELEGATE_WRITE:
+ return decode_rw_delegation(xdr, delegation_type, res);
+ case NFS4_OPEN_DELEGATE_NONE_EXT:
+ return decode_no_delegation(xdr, res);
+ }
+ return -EIO;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
{
__be32 *p;
@@ -6567,6 +6593,7 @@ static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
int status;
status = decode_compound_hdr(xdr, &hdr);
+ res->op_status = hdr.status;
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
@@ -6592,6 +6619,7 @@ static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
int status;
status = decode_compound_hdr(xdr, &hdr);
+ res->op_status = hdr.status;
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
@@ -6621,6 +6649,7 @@ static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
int status;
status = decode_compound_hdr(xdr, &hdr);
+ res->op_status = hdr.status;
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.