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提交 b2cdd9c9 编写于 作者: C Chuck Lever 提交者： Trond Myklebust
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NFS: Remove unused old NFSv3 decoder functions 

Clean up.  Remove unused legacy result decoder functions, and any
now unused decoder helper functions.
Signed-off-by: NChuck Lever <chuck.lever@oracle.com>
Tested-by: NJ. Bruce Fields <bfields@redhat.com>
Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
上级 f5fc3c50
隐藏空白更改
内联 并排
Showing with 4 addition and 508 deletion
fs/nfs/nfs3xdr.c
浏览文件 @ b2cdd9c9
......@@ -129,38 +129,6 @@ static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
/*
* Common NFS XDR functions as inlines
*/
static inline __be32 *
xdr_decode_fhandle(__be32 *p, struct nfs_fh *fh)
{
if ((fh->size = ntohl(*p++)) <= NFS3_FHSIZE) {
memcpy(fh->data, p, fh->size);
return p + XDR_QUADLEN(fh->size);
}
return NULL;
}
static inline __be32 *
xdr_decode_fhandle_stream(struct xdr_stream *xdr, struct nfs_fh *fh)
{
__be32 *p;
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out_overflow;
fh->size = ntohl(*p++);
if (fh->size <= NFS3_FHSIZE) {
p = xdr_inline_decode(xdr, fh->size);
if (unlikely(!p))
goto out_overflow;
memcpy(fh->data, p, fh->size);
return p + XDR_QUADLEN(fh->size);
}
return NULL;
out_overflow:
print_overflow_msg(__func__, xdr);
return ERR_PTR(-EIO);
}
/*
* Encode/decode time.
......@@ -221,51 +189,6 @@ xdr_decode_wcc_attr(__be32 *p, struct nfs_fattr *fattr)
return p;
}
static inline __be32 *
xdr_decode_post_op_attr(__be32 *p, struct nfs_fattr *fattr)
{
if (*p++)
p = xdr_decode_fattr(p, fattr);
return p;
}
static inline __be32 *
xdr_decode_post_op_attr_stream(struct xdr_stream *xdr, struct nfs_fattr *fattr)
{
__be32 *p;
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out_overflow;
if (ntohl(*p++)) {
p = xdr_inline_decode(xdr, 84);
if (unlikely(!p))
goto out_overflow;
p = xdr_decode_fattr(p, fattr);
}
return p;
out_overflow:
print_overflow_msg(__func__, xdr);
return ERR_PTR(-EIO);
}
static inline __be32 *
xdr_decode_pre_op_attr(__be32 *p, struct nfs_fattr *fattr)
{
if (*p++)
return xdr_decode_wcc_attr(p, fattr);
return p;
}
static inline __be32 *
xdr_decode_wcc_data(__be32 *p, struct nfs_fattr *fattr)
{
p = xdr_decode_pre_op_attr(p, fattr);
return xdr_decode_post_op_attr(p, fattr);
}
/*
* Encode/decode NFSv3 basic data types
*
......@@ -1403,52 +1326,6 @@ static int nfs3_xdr_enc_readdirplus3args(struct rpc_rqst *req, __be32 *p,
return 0;
}
/*
* Decode the result of a readdir call.
* We just check for syntactical correctness.
*/
static int
nfs3_xdr_readdirres(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirres *res)
{
struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
struct kvec *iov = rcvbuf->head;
struct page **page;
size_t hdrlen;
u32 recvd, pglen;
int status;
status = ntohl(*p++);
/* Decode post_op_attrs */
p = xdr_decode_post_op_attr(p, res->dir_attr);
if (status)
return nfs_stat_to_errno(status);
/* Decode verifier cookie */
if (res->verf) {
res->verf[0] = *p++;
res->verf[1] = *p++;
} else {
p += 2;
}
hdrlen = (u8 *) p - (u8 *) iov->iov_base;
if (iov->iov_len < hdrlen) {
dprintk("NFS: READDIR reply header overflowed:"
"length %Zu > %Zu\n", hdrlen, iov->iov_len);
return -errno_NFSERR_IO;
} else if (iov->iov_len != hdrlen) {
dprintk("NFS: READDIR header is short. iovec will be shifted.\n");
xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen);
}
pglen = rcvbuf->page_len;
recvd = rcvbuf->len - hdrlen;
if (pglen > recvd)
pglen = recvd;
page = rcvbuf->pages;
return pglen;
}
/*
* 3.3.21 COMMIT3args
*
......@@ -1526,22 +1403,11 @@ static int nfs3_xdr_enc_setacl3args(struct rpc_rqst *req, __be32 *p,
#endif /* CONFIG_NFS_V3_ACL */
/*
* NFS XDR decode functions
*/
/*
* Decode attrstat reply.
* NFSv3 XDR decode functions
*
* NFSv3 result types are defined in section 3.3 of RFC 1813:
* "NFS Version 3 Protocol Specification".
*/
static int
nfs3_xdr_attrstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
{
int status;
if ((status = ntohl(*p++)))
return nfs_stat_to_errno(status);
xdr_decode_fattr(p, fattr);
return 0;
}
/*
* 3.3.1 GETATTR3res
......@@ -1577,21 +1443,6 @@ static int nfs3_xdr_dec_getattr3res(struct rpc_rqst *req, __be32 *p,
return nfs_stat_to_errno(status);
}
/*
* Decode status+wcc_data reply
* SATTR, REMOVE, RMDIR
*/
static int
nfs3_xdr_wccstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
{
int status;
if ((status = ntohl(*p++)))
status = nfs_stat_to_errno(status);
xdr_decode_wcc_data(p, fattr);
return status;
}
/*
* 3.3.2 SETATTR3res
*
......@@ -1632,31 +1483,6 @@ static int nfs3_xdr_dec_setattr3res(struct rpc_rqst *req, __be32 *p,
return nfs_stat_to_errno(status);
}
static int
nfs3_xdr_removeres(struct rpc_rqst *req, __be32 *p, struct nfs_removeres *res)
{
return nfs3_xdr_wccstat(req, p, res->dir_attr);
}
/*
* Decode LOOKUP reply
*/
static int
nfs3_xdr_lookupres(struct rpc_rqst *req, __be32 *p, struct nfs3_diropres *res)
{
int status;
if ((status = ntohl(*p++))) {
status = nfs_stat_to_errno(status);
} else {
if (!(p = xdr_decode_fhandle(p, res->fh)))
return -errno_NFSERR_IO;
p = xdr_decode_post_op_attr(p, res->fattr);
}
xdr_decode_post_op_attr(p, res->dir_attr);
return status;
}
/*
* 3.3.3 LOOKUP3res
*
......@@ -1706,21 +1532,6 @@ static int nfs3_xdr_dec_lookup3res(struct rpc_rqst *req, __be32 *p,
return nfs_stat_to_errno(status);
}
/*
* Decode ACCESS reply
*/
static int
nfs3_xdr_accessres(struct rpc_rqst *req, __be32 *p, struct nfs3_accessres *res)
{
int status = ntohl(*p++);
p = xdr_decode_post_op_attr(p, res->fattr);
if (status)
return nfs_stat_to_errno(status);
res->access = ntohl(*p++);
return 0;
}
/*
* 3.3.4 ACCESS3res
*
......@@ -1763,52 +1574,6 @@ static int nfs3_xdr_dec_access3res(struct rpc_rqst *req, __be32 *p,
return nfs_stat_to_errno(status);
}
/*
* Decode READLINK reply
*/
static int
nfs3_xdr_readlinkres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
{
struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
struct kvec *iov = rcvbuf->head;
size_t hdrlen;
u32 len, recvd;
int status;
status = ntohl(*p++);
p = xdr_decode_post_op_attr(p, fattr);
if (status != 0)
return nfs_stat_to_errno(status);
/* Convert length of symlink */
len = ntohl(*p++);
if (len >= rcvbuf->page_len) {
dprintk("nfs: server returned giant symlink!\n");
return -ENAMETOOLONG;
}
hdrlen = (u8 *) p - (u8 *) iov->iov_base;
if (iov->iov_len < hdrlen) {
dprintk("NFS: READLINK reply header overflowed:"
"length %Zu > %Zu\n", hdrlen, iov->iov_len);
return -errno_NFSERR_IO;
} else if (iov->iov_len != hdrlen) {
dprintk("NFS: READLINK header is short. "
"iovec will be shifted.\n");
xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen);
}
recvd = req->rq_rcv_buf.len - hdrlen;
if (recvd < len) {
dprintk("NFS: server cheating in readlink reply: "
"count %u > recvd %u\n", len, recvd);
return -EIO;
}
xdr_terminate_string(rcvbuf, len);
return 0;
}
/*
* 3.3.5 READLINK3res
*
......@@ -1851,59 +1616,6 @@ static int nfs3_xdr_dec_readlink3res(struct rpc_rqst *req, __be32 *p,
return nfs_stat_to_errno(status);
}
/*
* Decode READ reply
*/
static int
nfs3_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res)
{
struct kvec *iov = req->rq_rcv_buf.head;
size_t hdrlen;
u32 count, ocount, recvd;
int status;
status = ntohl(*p++);
p = xdr_decode_post_op_attr(p, res->fattr);
if (status != 0)
return nfs_stat_to_errno(status);
/* Decode reply count and EOF flag. NFSv3 is somewhat redundant
* in that it puts the count both in the res struct and in the
* opaque data count. */
count = ntohl(*p++);
res->eof = ntohl(*p++);
ocount = ntohl(*p++);
if (ocount != count) {
dprintk("NFS: READ count doesn't match RPC opaque count.\n");
return -errno_NFSERR_IO;
}
hdrlen = (u8 *) p - (u8 *) iov->iov_base;
if (iov->iov_len < hdrlen) {
dprintk("NFS: READ reply header overflowed:"
"length %Zu > %Zu\n", hdrlen, iov->iov_len);
return -errno_NFSERR_IO;
} else if (iov->iov_len != hdrlen) {
dprintk("NFS: READ header is short. iovec will be shifted.\n");
xdr_shift_buf(&req->rq_rcv_buf, iov->iov_len - hdrlen);
}
recvd = req->rq_rcv_buf.len - hdrlen;
if (count > recvd) {
dprintk("NFS: server cheating in read reply: "
"count %u > recvd %u\n", count, recvd);
count = recvd;
res->eof = 0;
}
if (count < res->count)
res->count = count;
return count;
}
/*
* 3.3.6 READ3res
*
......@@ -1988,28 +1700,6 @@ static int nfs3_xdr_dec_read3res(struct rpc_rqst *req, __be32 *p,
return nfs_stat_to_errno(status);
}
/*
* Decode WRITE response
*/
static int
nfs3_xdr_writeres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res)
{
int status;
status = ntohl(*p++);
p = xdr_decode_wcc_data(p, res->fattr);
if (status != 0)
return nfs_stat_to_errno(status);
res->count = ntohl(*p++);
res->verf->committed = (enum nfs3_stable_how)ntohl(*p++);
res->verf->verifier[0] = *p++;
res->verf->verifier[1] = *p++;
return res->count;
}
/*
* 3.3.7 WRITE3res
*
......@@ -2082,33 +1772,6 @@ static int nfs3_xdr_dec_write3res(struct rpc_rqst *req, __be32 *p,
return nfs_stat_to_errno(status);
}
/*
* Decode a CREATE response
*/
static int
nfs3_xdr_createres(struct rpc_rqst *req, __be32 *p, struct nfs3_diropres *res)
{
int status;
status = ntohl(*p++);
if (status == 0) {
if (*p++) {
if (!(p = xdr_decode_fhandle(p, res->fh)))
return -errno_NFSERR_IO;
p = xdr_decode_post_op_attr(p, res->fattr);
} else {
memset(res->fh, 0, sizeof(*res->fh));
/* Do decode post_op_attr but set it to NULL */
p = xdr_decode_post_op_attr(p, res->fattr);
res->fattr->valid = 0;
}
} else {
status = nfs_stat_to_errno(status);
}
p = xdr_decode_wcc_data(p, res->dir_attr);
return status;
}
/*
* 3.3.8 CREATE3res
*
......@@ -2214,21 +1877,6 @@ static int nfs3_xdr_dec_remove3res(struct rpc_rqst *req, __be32 *p,
return nfs_stat_to_errno(status);
}
/*
* Decode RENAME reply
*/
static int
nfs3_xdr_renameres(struct rpc_rqst *req, __be32 *p, struct nfs_renameres *res)
{
int status;
if ((status = ntohl(*p++)) != 0)
status = nfs_stat_to_errno(status);
p = xdr_decode_wcc_data(p, res->old_fattr);
p = xdr_decode_wcc_data(p, res->new_fattr);
return status;
}
/*
* 3.3.14 RENAME3res
*
......@@ -2274,21 +1922,6 @@ static int nfs3_xdr_dec_rename3res(struct rpc_rqst *req, __be32 *p,
return nfs_stat_to_errno(status);
}
/*
* Decode LINK reply
*/
static int
nfs3_xdr_linkres(struct rpc_rqst *req, __be32 *p, struct nfs3_linkres *res)
{
int status;
if ((status = ntohl(*p++)) != 0)
status = nfs_stat_to_errno(status);
p = xdr_decode_post_op_attr(p, res->fattr);
p = xdr_decode_wcc_data(p, res->dir_attr);
return status;
}
/*
* 3.3.15 LINK3res
*
......@@ -2532,31 +2165,6 @@ static int nfs3_xdr_dec_readdir3res(struct rpc_rqst *req, __be32 *p,
return nfs_stat_to_errno(status);
}
/*
* Decode FSSTAT reply
*/
static int
nfs3_xdr_fsstatres(struct rpc_rqst *req, __be32 *p, struct nfs_fsstat *res)
{
int status;
status = ntohl(*p++);
p = xdr_decode_post_op_attr(p, res->fattr);
if (status != 0)
return nfs_stat_to_errno(status);
p = xdr_decode_hyper(p, &res->tbytes);
p = xdr_decode_hyper(p, &res->fbytes);
p = xdr_decode_hyper(p, &res->abytes);
p = xdr_decode_hyper(p, &res->tfiles);
p = xdr_decode_hyper(p, &res->ffiles);
p = xdr_decode_hyper(p, &res->afiles);
/* ignore invarsec */
return 0;
}
/*
* 3.3.18 FSSTAT3res
*
......@@ -2626,35 +2234,6 @@ static int nfs3_xdr_dec_fsstat3res(struct rpc_rqst *req, __be32 *p,
return nfs_stat_to_errno(status);
}
/*
* Decode FSINFO reply
*/
static int
nfs3_xdr_fsinfores(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *res)
{
int status;
status = ntohl(*p++);
p = xdr_decode_post_op_attr(p, res->fattr);
if (status != 0)
return nfs_stat_to_errno(status);
res->rtmax = ntohl(*p++);
res->rtpref = ntohl(*p++);
res->rtmult = ntohl(*p++);
res->wtmax = ntohl(*p++);
res->wtpref = ntohl(*p++);
res->wtmult = ntohl(*p++);
res->dtpref = ntohl(*p++);
p = xdr_decode_hyper(p, &res->maxfilesize);
p = xdr_decode_time3(p, &res->time_delta);
/* ignore properties */
res->lease_time = 0;
return 0;
}
/*
* 3.3.19 FSINFO3res
*
......@@ -2732,26 +2311,6 @@ static int nfs3_xdr_dec_fsinfo3res(struct rpc_rqst *req, __be32 *p,
return nfs_stat_to_errno(status);
}
/*
* Decode PATHCONF reply
*/
static int
nfs3_xdr_pathconfres(struct rpc_rqst *req, __be32 *p, struct nfs_pathconf *res)
{
int status;
status = ntohl(*p++);
p = xdr_decode_post_op_attr(p, res->fattr);
if (status != 0)
return nfs_stat_to_errno(status);
res->max_link = ntohl(*p++);
res->max_namelen = ntohl(*p++);
/* ignore remaining fields */
return 0;
}
/*
* 3.3.20 PATHCONF3res
*
......@@ -2816,24 +2375,6 @@ static int nfs3_xdr_dec_pathconf3res(struct rpc_rqst *req, __be32 *p,
return nfs_stat_to_errno(status);
}
/*
* Decode COMMIT reply
*/
static int
nfs3_xdr_commitres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res)
{
int status;
status = ntohl(*p++);
p = xdr_decode_wcc_data(p, res->fattr);
if (status != 0)
return nfs_stat_to_errno(status);
res->verf->verifier[0] = *p++;
res->verf->verifier[1] = *p++;
return 0;
}
/*
* 3.3.21 COMMIT3res
*
......@@ -2877,37 +2418,6 @@ static int nfs3_xdr_dec_commit3res(struct rpc_rqst *req, __be32 *p,
}
#ifdef CONFIG_NFS_V3_ACL
/*
* Decode GETACL reply
*/
static int
nfs3_xdr_getaclres(struct rpc_rqst *req, __be32 *p,
struct nfs3_getaclres *res)
{
struct xdr_buf *buf = &req->rq_rcv_buf;
int status = ntohl(*p++);
struct posix_acl **acl;
unsigned int *aclcnt;
int err, base;
if (status != 0)
return nfs_stat_to_errno(status);
p = xdr_decode_post_op_attr(p, res->fattr);
res->mask = ntohl(*p++);
if (res->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT))
return -EINVAL;
base = (char *)p - (char *)req->rq_rcv_buf.head->iov_base;
acl = (res->mask & NFS_ACL) ? &res->acl_access : NULL;
aclcnt = (res->mask & NFS_ACLCNT) ? &res->acl_access_count : NULL;
err = nfsacl_decode(buf, base, aclcnt, acl);
acl = (res->mask & NFS_DFACL) ? &res->acl_default : NULL;
aclcnt = (res->mask & NFS_DFACLCNT) ? &res->acl_default_count : NULL;
if (err > 0)
err = nfsacl_decode(buf, base + err, aclcnt, acl);
return (err > 0) ? 0 : err;
}
static inline int decode_getacl3resok(struct xdr_stream *xdr,
struct nfs3_getaclres *result)
......@@ -2973,20 +2483,6 @@ static int nfs3_xdr_dec_getacl3res(struct rpc_rqst *req, __be32 *p,
return nfs_stat_to_errno(status);
}
/*
* Decode setacl reply.
*/
static int
nfs3_xdr_setaclres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
{
int status = ntohl(*p++);
if (status)
return nfs_stat_to_errno(status);
xdr_decode_post_op_attr(p, fattr);
return 0;
}
static int nfs3_xdr_dec_setacl3res(struct rpc_rqst *req, __be32 *p,
struct nfs_fattr *result)
{
......
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