int
nfs3svc_decode_linkargs(struct svc_rqst *rqstp, u32 *p,
struct nfsd3_linkargs *args)
{
if (!(p = decode_fh(p, &args->ffh))
|| !(p = decode_fh(p, &args->tfh))
|| !(p = decode_filename(p, &args->tname, &args->tlen)))
return 0;
return xdr_argsize_check(rqstp, p);
}
int
nfssvc_decode_renameargs(struct svc_rqst *rqstp, __be32 *p,
struct nfsd_renameargs *args)
{
if (!(p = decode_fh(p, &args->ffh))
|| !(p = decode_filename(p, &args->fname, &args->flen))
|| !(p = decode_fh(p, &args->tfh))
|| !(p = decode_filename(p, &args->tname, &args->tlen)))
return 0;
return xdr_argsize_check(rqstp, p);
}
int
nfssvc_decode_linkargs(struct svc_rqst *rqstp, __be32 *p)
{
struct nfsd_linkargs *args = rqstp->rq_argp;
if (!(p = decode_fh(p, &args->ffh))
|| !(p = decode_fh(p, &args->tfh))
|| !(p = decode_filename(p, &args->tname, &args->tlen)))
return 0;
return xdr_argsize_check(rqstp, p);
}
int
nfssvc_decode_readargs(struct svc_rqst *rqstp, __be32 *p)
{
struct nfsd_readargs *args = rqstp->rq_argp;
unsigned int len;
int v;
p = decode_fh(p, &args->fh);
if (!p)
return 0;
args->offset = ntohl(*p++);
len = args->count = ntohl(*p++);
p++; /* totalcount - unused */
len = min_t(unsigned int, len, NFSSVC_MAXBLKSIZE_V2);
/* set up somewhere to store response.
* We take pages, put them on reslist and include in iovec
*/
v=0;
while (len > 0) {
struct page *p = *(rqstp->rq_next_page++);
rqstp->rq_vec[v].iov_base = page_address(p);
rqstp->rq_vec[v].iov_len = min_t(unsigned int, len, PAGE_SIZE);
len -= rqstp->rq_vec[v].iov_len;
v++;
}
args->vlen = v;
return xdr_argsize_check(rqstp, p);
}
int
nfssvc_decode_writeargs(struct svc_rqst *rqstp, __be32 *p,
struct nfsd_writeargs *args)
{
unsigned int len;
int v;
if (!(p = decode_fh(p, &args->fh)))
return 0;
p++; /* beginoffset */
args->offset = ntohl(*p++); /* offset */
p++; /* totalcount */
len = args->len = ntohl(*p++);
rqstp->rq_vec[0].iov_base = (void*)p;
rqstp->rq_vec[0].iov_len = rqstp->rq_arg.head[0].iov_len -
(((void*)p) - rqstp->rq_arg.head[0].iov_base);
if (len > NFSSVC_MAXBLKSIZE_V2)
len = NFSSVC_MAXBLKSIZE_V2;
v = 0;
while (len > rqstp->rq_vec[v].iov_len) {
len -= rqstp->rq_vec[v].iov_len;
v++;
rqstp->rq_vec[v].iov_base = page_address(rqstp->rq_pages[v]);
rqstp->rq_vec[v].iov_len = PAGE_SIZE;
}
rqstp->rq_vec[v].iov_len = len;
args->vlen = v+1;
return rqstp->rq_vec[0].iov_len > 0;
}
int
nfssvc_decode_readargs(struct svc_rqst *rqstp, __be32 *p,
struct nfsd_readargs *args)
{
unsigned int len;
int v,pn;
if (!(p = decode_fh(p, &args->fh)))
return 0;
args->offset = ntohl(*p++);
len = args->count = ntohl(*p++);
p++;
if (len > NFSSVC_MAXBLKSIZE_V2)
len = NFSSVC_MAXBLKSIZE_V2;
v=0;
while (len > 0) {
pn = rqstp->rq_resused++;
rqstp->rq_vec[v].iov_base = page_address(rqstp->rq_respages[pn]);
rqstp->rq_vec[v].iov_len = len < PAGE_SIZE?len:PAGE_SIZE;
len -= rqstp->rq_vec[v].iov_len;
v++;
}
args->vlen = v;
return xdr_argsize_check(rqstp, p);
}
int
nfssvc_decode_fhandle(struct svc_rqst *rqstp, __be32 *p, struct nfsd_fhandle *args)
{
if (!(p = decode_fh(p, &args->fh)))
return 0;
return xdr_argsize_check(rqstp, p);
}
int
nfssvc_decode_readargs(struct svc_rqst *rqstp, __be32 *p,
struct nfsd_readargs *args)
{
unsigned int len;
int v,pn;
if (!(p = decode_fh(p, &args->fh)))
return 0;
args->offset = ntohl(*p++);
len = args->count = ntohl(*p++);
p++; /* totalcount - unused */
if (len > NFSSVC_MAXBLKSIZE_V2)
len = NFSSVC_MAXBLKSIZE_V2;
/* set up somewhere to store response.
* We take pages, put them on reslist and include in iovec
*/
v=0;
while (len > 0) {
pn = rqstp->rq_resused++;
rqstp->rq_vec[v].iov_base = page_address(rqstp->rq_respages[pn]);
rqstp->rq_vec[v].iov_len = len < PAGE_SIZE?len:PAGE_SIZE;
len -= rqstp->rq_vec[v].iov_len;
v++;
}
args->vlen = v;
return xdr_argsize_check(rqstp, p);
}
int
nfs3svc_decode_readdirplusargs(struct svc_rqst *rqstp, __be32 *p)
{
struct nfsd3_readdirargs *args = rqstp->rq_argp;
int len;
u32 max_blocksize = svc_max_payload(rqstp);
p = decode_fh(p, &args->fh);
if (!p)
return 0;
p = xdr_decode_hyper(p, &args->cookie);
args->verf = p; p += 2;
args->dircount = ntohl(*p++);
args->count = ntohl(*p++);
len = args->count = min(args->count, max_blocksize);
while (len > 0) {
struct page *p = *(rqstp->rq_next_page++);
if (!args->buffer)
args->buffer = page_address(p);
len -= PAGE_SIZE;
}
return xdr_argsize_check(rqstp, p);
}
int
nfs3svc_decode_readargs(struct svc_rqst *rqstp, __be32 *p)
{
struct nfsd3_readargs *args = rqstp->rq_argp;
unsigned int len;
int v;
u32 max_blocksize = svc_max_payload(rqstp);
p = decode_fh(p, &args->fh);
if (!p)
return 0;
p = xdr_decode_hyper(p, &args->offset);
args->count = ntohl(*p++);
len = min(args->count, max_blocksize);
/* set up the kvec */
v=0;
while (len > 0) {
struct page *p = *(rqstp->rq_next_page++);
rqstp->rq_vec[v].iov_base = page_address(p);
rqstp->rq_vec[v].iov_len = min_t(unsigned int, len, PAGE_SIZE);
len -= rqstp->rq_vec[v].iov_len;
v++;
}
args->vlen = v;
return xdr_argsize_check(rqstp, p);
}
/*
* XDR decode functions
*/
int
nfs3svc_decode_fhandle(struct svc_rqst *rqstp, u32 *p, struct svc_fh *fhp)
{
if (!(p = decode_fh(p, fhp)))
return 0;
return xdr_argsize_check(rqstp, p);
}
static __be32 decode_layoutrecall_args(struct svc_rqst *rqstp,
struct xdr_stream *xdr,
struct cb_layoutrecallargs *args)
{
__be32 *p;
__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);
goto out;
}
args->cbl_layout_type = ntohl(*p++);
/* Depite the spec's xdr, iomode really belongs in the FILE switch,
* as it is unusable and ignored with the other types.
*/
iomode = ntohl(*p++);
args->cbl_layoutchanged = ntohl(*p++);
args->cbl_recall_type = ntohl(*p++);
if (args->cbl_recall_type == RETURN_FILE) {
args->cbl_range.iomode = iomode;
status = decode_fh(xdr, &args->cbl_fh);
if (unlikely(status != 0))
goto out;
p = read_buf(xdr, 2 * sizeof(uint64_t));
if (unlikely(p == NULL)) {
status = htonl(NFS4ERR_BADXDR);
goto out;
}
p = xdr_decode_hyper(p, &args->cbl_range.offset);
p = xdr_decode_hyper(p, &args->cbl_range.length);
status = decode_stateid(xdr, &args->cbl_stateid);
if (unlikely(status != 0))
goto out;
} else if (args->cbl_recall_type == RETURN_FSID) {
p = read_buf(xdr, 2 * sizeof(uint64_t));
if (unlikely(p == NULL)) {
status = htonl(NFS4ERR_BADXDR);
goto out;
}
p = xdr_decode_hyper(p, &args->cbl_fsid.major);
p = xdr_decode_hyper(p, &args->cbl_fsid.minor);
} else if (args->cbl_recall_type != RETURN_ALL) {
status = htonl(NFS4ERR_BADXDR);
goto out;
}
dprintk("%s: ltype 0x%x iomode %d changed %d recall_type %d\n",
__func__,
args->cbl_layout_type, iomode,
args->cbl_layoutchanged, args->cbl_recall_type);
out:
dprintk("%s: exit with status = %d\n", __func__, ntohl(status));
return status;
}
int
nfssvc_decode_readlinkargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd_readlinkargs *args)
{
if (!(p = decode_fh(p, &args->fh)))
return 0;
args->buffer = page_address(rqstp->rq_respages[rqstp->rq_resused++]);
return xdr_argsize_check(rqstp, p);
}
int
nfssvc_decode_fhandle(struct svc_rqst *rqstp, __be32 *p)
{
struct nfsd_fhandle *args = rqstp->rq_argp;
p = decode_fh(p, &args->fh);
if (!p)
return 0;
return xdr_argsize_check(rqstp, p);
}
int
nfssvc_decode_readlinkargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd_readlinkargs *args)
{
p = decode_fh(p, &args->fh);
if (!p)
return 0;
args->buffer = page_address(*(rqstp->rq_next_page++));
return xdr_argsize_check(rqstp, p);
}
int
nfs3svc_decode_accessargs(struct svc_rqst *rqstp, u32 *p,
struct nfsd3_accessargs *args)
{
if (!(p = decode_fh(p, &args->fh)))
return 0;
args->access = ntohl(*p++);
return xdr_argsize_check(rqstp, p);
}
int
nfssvc_decode_diropargs(struct svc_rqst *rqstp, __be32 *p,
struct nfsd_diropargs *args)
{
if (!(p = decode_fh(p, &args->fh))
|| !(p = decode_filename(p, &args->name, &args->len)))
return 0;
return xdr_argsize_check(rqstp, p);
}
int
nfssvc_decode_sattrargs(struct svc_rqst *rqstp, __be32 *p,
struct nfsd_sattrargs *args)
{
if (!(p = decode_fh(p, &args->fh))
|| !(p = decode_sattr(p, &args->attrs)))
return 0;
return xdr_argsize_check(rqstp, p);
}
int
nfs3svc_decode_commitargs(struct svc_rqst *rqstp, u32 *p,
struct nfsd3_commitargs *args)
{
if (!(p = decode_fh(p, &args->fh)))
return 0;
p = xdr_decode_hyper(p, &args->offset);
args->count = ntohl(*p++);
return xdr_argsize_check(rqstp, p);
}
static __be32 decode_notify_lock_args(struct svc_rqst *rqstp,
struct xdr_stream *xdr, void *argp)
{
struct cb_notify_lock_args *args = argp;
__be32 status;
status = decode_fh(xdr, &args->cbnl_fh);
if (unlikely(status != 0))
return status;
return decode_lockowner(xdr, args);
}
int
nfs3svc_decode_mkdirargs(struct svc_rqst *rqstp, u32 *p,
struct nfsd3_createargs *args)
{
if (!(p = decode_fh(p, &args->fh))
|| !(p = decode_filename(p, &args->name, &args->len))
|| !(p = decode_sattr3(p, &args->attrs)))
return 0;
return xdr_argsize_check(rqstp, p);
}
int
nfssvc_decode_readdirargs(struct svc_rqst *rqstp, u32 *p,
struct nfsd_readdirargs *args)
{
if (!(p = decode_fh(p, &args->fh)))
return 0;
args->cookie = ntohl(*p++);
args->count = ntohl(*p++);
return xdr_argsize_check(rqstp, p);
}
int
nfs3svc_decode_diropargs(struct svc_rqst *rqstp, __be32 *p)
{
struct nfsd3_diropargs *args = rqstp->rq_argp;
if (!(p = decode_fh(p, &args->fh))
|| !(p = decode_filename(p, &args->name, &args->len)))
return 0;
return xdr_argsize_check(rqstp, p);
}
static __be32 decode_getattr_args(struct svc_rqst *rqstp,
struct xdr_stream *xdr, void *argp)
{
struct cb_getattrargs *args = argp;
__be32 status;
status = decode_fh(xdr, &args->fh);
if (unlikely(status != 0))
return status;
return decode_bitmap(xdr, args->bitmap);
}
int
nfssvc_decode_symlinkargs(struct svc_rqst *rqstp, __be32 *p,
struct nfsd_symlinkargs *args)
{
if ( !(p = decode_fh(p, &args->ffh))
|| !(p = decode_filename(p, &args->fname, &args->flen))
|| !(p = decode_pathname(p, &args->tname, &args->tlen)))
return 0;
p = decode_sattr(p, &args->attrs);
return xdr_argsize_check(rqstp, p);
}
int
nfs3svc_decode_commitargs(struct svc_rqst *rqstp, __be32 *p)
{
struct nfsd3_commitargs *args = rqstp->rq_argp;
p = decode_fh(p, &args->fh);
if (!p)
return 0;
p = xdr_decode_hyper(p, &args->offset);
args->count = ntohl(*p++);
return xdr_argsize_check(rqstp, p);
}
static __be32 decode_getattr_args(struct svc_rqst *rqstp, struct xdr_stream *xdr, struct cb_getattrargs *args)
{
__be32 status;
status = decode_fh(xdr, &args->fh);
if (unlikely(status != 0))
goto out;
status = decode_bitmap(xdr, args->bitmap);
out:
dprintk("%s: exit with status = %d\n", __func__, ntohl(status));
return status;
}
static __be32 decode_notify_lock_args(struct svc_rqst *rqstp, struct xdr_stream *xdr, struct cb_notify_lock_args *args)
{
__be32 status;
status = decode_fh(xdr, &args->cbnl_fh);
if (unlikely(status != 0))
goto out;
status = decode_lockowner(xdr, args);
out:
dprintk("%s: exit with status = %d\n", __func__, ntohl(status));
return status;
}
int
nfssvc_decode_sattrargs(struct svc_rqst *rqstp, __be32 *p)
{
struct nfsd_sattrargs *args = rqstp->rq_argp;
p = decode_fh(p, &args->fh);
if (!p)
return 0;
p = decode_sattr(p, &args->attrs);
return xdr_argsize_check(rqstp, p);
}
int
nfssvc_decode_createargs(struct svc_rqst *rqstp, __be32 *p)
{
struct nfsd_createargs *args = rqstp->rq_argp;
if ( !(p = decode_fh(p, &args->fh))
|| !(p = decode_filename(p, &args->name, &args->len)))
return 0;
p = decode_sattr(p, &args->attrs);
return xdr_argsize_check(rqstp, p);
}