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Diffstat (limited to 'fs/nfs/nfs4xdr.c')
-rw-r--r--fs/nfs/nfs4xdr.c167
1 files changed, 154 insertions, 13 deletions
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 21c3004b72d5..dddfb5795d7b 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -327,6 +327,18 @@ static int nfs4_stat_to_errno(int);
#define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
decode_stateid_maxsz + \
XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE))
+#define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \
+ 2 /* offset */ + \
+ 2 /* length */ + \
+ 1 /* reclaim */ + \
+ encode_stateid_maxsz + \
+ 1 /* new offset (true) */ + \
+ 2 /* last byte written */ + \
+ 1 /* nt_timechanged (false) */ + \
+ 1 /* layoutupdate4 layout type */ + \
+ 1 /* NULL filelayout layoutupdate4 payload */)
+#define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
+
#else /* CONFIG_NFS_V4_1 */
#define encode_sequence_maxsz 0
#define decode_sequence_maxsz 0
@@ -738,6 +750,17 @@ static int nfs4_stat_to_errno(int);
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_layoutget_maxsz)
+#define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
+ encode_sequence_maxsz +\
+ encode_putfh_maxsz + \
+ encode_layoutcommit_maxsz + \
+ encode_getattr_maxsz)
+#define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
+ decode_sequence_maxsz + \
+ decode_putfh_maxsz + \
+ decode_layoutcommit_maxsz + \
+ decode_getattr_maxsz)
+
const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
compound_encode_hdr_maxsz +
@@ -1839,6 +1862,34 @@ encode_layoutget(struct xdr_stream *xdr,
hdr->nops++;
hdr->replen += decode_layoutget_maxsz;
}
+
+static int
+encode_layoutcommit(struct xdr_stream *xdr,
+ const struct nfs4_layoutcommit_args *args,
+ struct compound_hdr *hdr)
+{
+ __be32 *p;
+
+ dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
+ NFS_SERVER(args->inode)->pnfs_curr_ld->id);
+
+ p = reserve_space(xdr, 48 + NFS4_STATEID_SIZE);
+ *p++ = cpu_to_be32(OP_LAYOUTCOMMIT);
+ /* Only whole file layouts */
+ p = xdr_encode_hyper(p, 0); /* offset */
+ p = xdr_encode_hyper(p, NFS4_MAX_UINT64); /* length */
+ *p++ = cpu_to_be32(0); /* reclaim */
+ p = xdr_encode_opaque_fixed(p, args->stateid.data, NFS4_STATEID_SIZE);
+ *p++ = cpu_to_be32(1); /* newoffset = TRUE */
+ p = xdr_encode_hyper(p, args->lastbytewritten);
+ *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
+ *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
+ *p++ = cpu_to_be32(0); /* no file layout payload */
+
+ hdr->nops++;
+ hdr->replen += decode_layoutcommit_maxsz;
+ return 0;
+}
#endif /* CONFIG_NFS_V4_1 */
/*
@@ -2317,7 +2368,8 @@ static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->fh, &hdr);
encode_commit(xdr, args, &hdr);
- encode_getfattr(xdr, args->bitmask, &hdr);
+ if (args->bitmask)
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
}
@@ -2645,7 +2697,31 @@ static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, NFS_FH(args->inode), &hdr);
encode_layoutget(xdr, args, &hdr);
+
+ xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
+ args->layout.pages, 0, args->layout.pglen);
+
+ encode_nops(&hdr);
+}
+
+/*
+ * Encode LAYOUTCOMMIT request
+ */
+static int nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs4_layoutcommit_args *args)
+{
+ struct compound_hdr hdr = {
+ .minorversion = nfs4_xdr_minorversion(&args->seq_args),
+ };
+
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, NFS_FH(args->inode), &hdr);
+ encode_layoutcommit(xdr, args, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
+ return 0;
}
#endif /* CONFIG_NFS_V4_1 */
@@ -5063,6 +5139,9 @@ static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
__be32 *p;
int status;
u32 layout_count;
+ struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
+ struct kvec *iov = rcvbuf->head;
+ u32 hdrlen, recvd;
status = decode_op_hdr(xdr, OP_LAYOUTGET);
if (status)
@@ -5079,17 +5158,14 @@ static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
return -EINVAL;
}
- p = xdr_inline_decode(xdr, 24);
+ p = xdr_inline_decode(xdr, 28);
if (unlikely(!p))
goto out_overflow;
p = xdr_decode_hyper(p, &res->range.offset);
p = xdr_decode_hyper(p, &res->range.length);
res->range.iomode = be32_to_cpup(p++);
res->type = be32_to_cpup(p++);
-
- status = decode_opaque_inline(xdr, &res->layout.len, (char **)&p);
- if (unlikely(status))
- return status;
+ res->layoutp->len = be32_to_cpup(p);
dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
__func__,
@@ -5097,12 +5173,18 @@ static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
(unsigned long)res->range.length,
res->range.iomode,
res->type,
- res->layout.len);
+ res->layoutp->len);
+
+ hdrlen = (u8 *) xdr->p - (u8 *) iov->iov_base;
+ recvd = req->rq_rcv_buf.len - hdrlen;
+ if (res->layoutp->len > recvd) {
+ dprintk("NFS: server cheating in layoutget reply: "
+ "layout len %u > recvd %u\n",
+ res->layoutp->len, recvd);
+ return -EINVAL;
+ }
- /* nfs4_proc_layoutget allocated a single page */
- if (res->layout.len > PAGE_SIZE)
- return -ENOMEM;
- memcpy(res->layout.buf, p, res->layout.len);
+ xdr_read_pages(xdr, res->layoutp->len);
if (layout_count > 1) {
/* We only handle a length one array at the moment. Any
@@ -5119,6 +5201,35 @@ out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
+
+static int decode_layoutcommit(struct xdr_stream *xdr,
+ struct rpc_rqst *req,
+ struct nfs4_layoutcommit_res *res)
+{
+ __be32 *p;
+ __u32 sizechanged;
+ int status;
+
+ status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
+ if (status)
+ return status;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(!p))
+ goto out_overflow;
+ sizechanged = be32_to_cpup(p);
+
+ if (sizechanged) {
+ /* throw away new size */
+ p = xdr_inline_decode(xdr, 8);
+ if (unlikely(!p))
+ goto out_overflow;
+ }
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
#endif /* CONFIG_NFS_V4_1 */
/*
@@ -5836,8 +5947,9 @@ static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
status = decode_commit(xdr, res);
if (status)
goto out;
- decode_getfattr(xdr, res->fattr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task));
+ if (res->fattr)
+ decode_getfattr(xdr, res->fattr, res->server,
+ !RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
}
@@ -6205,6 +6317,34 @@ static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
out:
return status;
}
+
+/*
+ * Decode LAYOUTCOMMIT response
+ */
+static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
+ struct nfs4_layoutcommit_res *res)
+{
+ struct compound_hdr hdr;
+ int status;
+
+ status = decode_compound_hdr(xdr, &hdr);
+ if (status)
+ goto out;
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
+ if (status)
+ goto out;
+ status = decode_putfh(xdr);
+ if (status)
+ goto out;
+ status = decode_layoutcommit(xdr, rqstp, res);
+ if (status)
+ goto out;
+ decode_getfattr(xdr, res->fattr, res->server,
+ !RPC_IS_ASYNC(rqstp->rq_task));
+out:
+ return status;
+}
#endif /* CONFIG_NFS_V4_1 */
/**
@@ -6403,6 +6543,7 @@ struct rpc_procinfo nfs4_procedures[] = {
PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
+ PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
#endif /* CONFIG_NFS_V4_1 */
};
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-16 00:38:35 +0000