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path: root/fs/nfs/callback_xdr.c
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Diffstat (limited to 'fs/nfs/callback_xdr.c')
-rw-r--r--fs/nfs/callback_xdr.c39
1 files changed, 18 insertions, 21 deletions
diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c
index 6b1697a01..646cdac73 100644
--- a/fs/nfs/callback_xdr.c
+++ b/fs/nfs/callback_xdr.c
@@ -18,19 +18,21 @@
#include "internal.h"
#include "nfs4session.h"
-#define CB_OP_TAGLEN_MAXSZ (512)
-#define CB_OP_HDR_RES_MAXSZ (2 + CB_OP_TAGLEN_MAXSZ)
-#define CB_OP_GETATTR_BITMAP_MAXSZ (4)
-#define CB_OP_GETATTR_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ + \
- CB_OP_GETATTR_BITMAP_MAXSZ + \
- 2 + 2 + 3 + 3)
-#define CB_OP_RECALL_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ)
+#define CB_OP_TAGLEN_MAXSZ (512)
+#define CB_OP_HDR_RES_MAXSZ (2 * 4) // opcode, status
+#define CB_OP_GETATTR_BITMAP_MAXSZ (4 * 4) // bitmap length, 3 bitmaps
+#define CB_OP_GETATTR_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ + \
+ CB_OP_GETATTR_BITMAP_MAXSZ + \
+ /* change, size, ctime, mtime */\
+ (2 + 2 + 3 + 3) * 4)
+#define CB_OP_RECALL_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ)
#if defined(CONFIG_NFS_V4_1)
#define CB_OP_LAYOUTRECALL_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ)
#define CB_OP_DEVICENOTIFY_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ)
#define CB_OP_SEQUENCE_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ + \
- 4 + 1 + 3)
+ NFS4_MAX_SESSIONID_LEN + \
+ (1 + 3) * 4) // seqid, 3 slotids
#define CB_OP_RECALLANY_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ)
#define CB_OP_RECALLSLOT_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ)
#endif /* CONFIG_NFS_V4_1 */
@@ -157,7 +159,7 @@ static __be32 decode_compound_hdr_arg(struct xdr_stream *xdr, struct cb_compound
if (unlikely(status != 0))
return status;
/* We do not like overly long tags! */
- if (hdr->taglen > CB_OP_TAGLEN_MAXSZ - 12) {
+ if (hdr->taglen > CB_OP_TAGLEN_MAXSZ) {
printk("NFS: NFSv4 CALLBACK %s: client sent tag of length %u\n",
__func__, hdr->taglen);
return htonl(NFS4ERR_RESOURCE);
@@ -198,7 +200,6 @@ static __be32 decode_getattr_args(struct svc_rqst *rqstp, struct xdr_stream *xdr
status = decode_fh(xdr, &args->fh);
if (unlikely(status != 0))
goto out;
- args->addr = svc_addr(rqstp);
status = decode_bitmap(xdr, args->bitmap);
out:
dprintk("%s: exit with status = %d\n", __func__, ntohl(status));
@@ -210,7 +211,6 @@ static __be32 decode_recall_args(struct svc_rqst *rqstp, struct xdr_stream *xdr,
__be32 *p;
__be32 status;
- args->addr = svc_addr(rqstp);
status = decode_stateid(xdr, &args->stateid);
if (unlikely(status != 0))
goto out;
@@ -236,7 +236,6 @@ static __be32 decode_layoutrecall_args(struct svc_rqst *rqstp,
__be32 status = 0;
uint32_t iomode;
- args->cbl_addr = svc_addr(rqstp);
p = read_buf(xdr, 4 * sizeof(uint32_t));
if (unlikely(p == NULL)) {
status = htonl(NFS4ERR_BADXDR);
@@ -383,13 +382,12 @@ static __be32 decode_sessionid(struct xdr_stream *xdr,
struct nfs4_sessionid *sid)
{
__be32 *p;
- int len = NFS4_MAX_SESSIONID_LEN;
- p = read_buf(xdr, len);
+ p = read_buf(xdr, NFS4_MAX_SESSIONID_LEN);
if (unlikely(p == NULL))
return htonl(NFS4ERR_RESOURCE);
- memcpy(sid->data, p, len);
+ memcpy(sid->data, p, NFS4_MAX_SESSIONID_LEN);
return 0;
}
@@ -500,7 +498,6 @@ static __be32 decode_recallany_args(struct svc_rqst *rqstp,
uint32_t bitmap[2];
__be32 *p, status;
- args->craa_addr = svc_addr(rqstp);
p = read_buf(xdr, 4);
if (unlikely(p == NULL))
return htonl(NFS4ERR_BADXDR);
@@ -519,7 +516,6 @@ static __be32 decode_recallslot_args(struct svc_rqst *rqstp,
{
__be32 *p;
- args->crsa_addr = svc_addr(rqstp);
p = read_buf(xdr, 4);
if (unlikely(p == NULL))
return htonl(NFS4ERR_BADXDR);
@@ -684,13 +680,12 @@ static __be32 encode_sessionid(struct xdr_stream *xdr,
const struct nfs4_sessionid *sid)
{
__be32 *p;
- int len = NFS4_MAX_SESSIONID_LEN;
- p = xdr_reserve_space(xdr, len);
+ p = xdr_reserve_space(xdr, NFS4_MAX_SESSIONID_LEN);
if (unlikely(p == NULL))
return htonl(NFS4ERR_RESOURCE);
- memcpy(p, sid, len);
+ memcpy(p, sid, NFS4_MAX_SESSIONID_LEN);
return 0;
}
@@ -704,7 +699,9 @@ static __be32 encode_cb_sequence_res(struct svc_rqst *rqstp,
if (unlikely(status != 0))
goto out;
- encode_sessionid(xdr, &res->csr_sessionid);
+ status = encode_sessionid(xdr, &res->csr_sessionid);
+ if (status)
+ goto out;
p = xdr_reserve_space(xdr, 4 * sizeof(uint32_t));
if (unlikely(p == NULL))