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);
}
int
nfs3svc_decode_writeargs(struct svc_rqst *rqstp, __be32 *p)
{
struct nfsd3_writeargs *args = rqstp->rq_argp;
unsigned int len, hdr, dlen;
u32 max_blocksize = svc_max_payload(rqstp);
struct kvec *head = rqstp->rq_arg.head;
struct kvec *tail = rqstp->rq_arg.tail;
p = decode_fh(p, &args->fh);
if (!p)
return 0;
p = xdr_decode_hyper(p, &args->offset);
args->count = ntohl(*p++);
args->stable = ntohl(*p++);
len = args->len = ntohl(*p++);
if ((void *)p > head->iov_base + head->iov_len)
return 0;
/*
* The count must equal the amount of data passed.
*/
if (args->count != args->len)
return 0;
/*
* Check to make sure that we got the right number of
* bytes.
*/
hdr = (void*)p - head->iov_base;
dlen = head->iov_len + rqstp->rq_arg.page_len + tail->iov_len - hdr;
/*
* Round the length of the data which was specified up to
* the next multiple of XDR units and then compare that
* against the length which was actually received.
* Note that when RPCSEC/GSS (for example) is used, the
* data buffer can be padded so dlen might be larger
* than required. It must never be smaller.
*/
if (dlen < XDR_QUADLEN(len)*4)
return 0;
if (args->count > max_blocksize) {
args->count = max_blocksize;
len = args->len = max_blocksize;
}
args->first.iov_base = (void *)p;
args->first.iov_len = head->iov_len - hdr;
return 1;
}
static __be32
nfsd4_ff_proc_getdeviceinfo(struct super_block *sb, struct svc_rqst *rqstp,
struct nfs4_client *clp, struct nfsd4_getdeviceinfo *gdp)
{
struct pnfs_ff_device_addr *da;
u16 port;
char addr[INET6_ADDRSTRLEN];
da = kzalloc(sizeof(struct pnfs_ff_device_addr), GFP_KERNEL);
if (!da)
return nfserrno(-ENOMEM);
gdp->gd_device = da;
da->version = 3;
da->minor_version = 0;
da->rsize = svc_max_payload(rqstp);
da->wsize = da->rsize;
rpc_ntop((struct sockaddr *)&rqstp->rq_daddr,
addr, INET6_ADDRSTRLEN);
if (rqstp->rq_daddr.ss_family == AF_INET) {
struct sockaddr_in *sin;
sin = (struct sockaddr_in *)&rqstp->rq_daddr;
port = ntohs(sin->sin_port);
snprintf(da->netaddr.netid, FF_NETID_LEN + 1, "tcp");
da->netaddr.netid_len = 3;
} else {
struct sockaddr_in6 *sin6;
sin6 = (struct sockaddr_in6 *)&rqstp->rq_daddr;
port = ntohs(sin6->sin6_port);
snprintf(da->netaddr.netid, FF_NETID_LEN + 1, "tcp6");
da->netaddr.netid_len = 4;
}
da->netaddr.addr_len =
snprintf(da->netaddr.addr, FF_ADDR_LEN + 1,
"%s.%hhu.%hhu", addr, port >> 8, port & 0xff);
da->tightly_coupled = false;
return 0;
}
int
nfs3svc_decode_readdirargs(struct svc_rqst *rqstp, __be32 *p)
{
struct nfsd3_readdirargs *args = rqstp->rq_argp;
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 = ~0;
args->count = ntohl(*p++);
args->count = min_t(u32, args->count, max_blocksize);
args->buffer = page_address(*(rqstp->rq_next_page++));
return xdr_argsize_check(rqstp, p);
}
