*
* NFSv4 callback encode/decode procedures
*/
-#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/sunrpc/svc.h>
#include <linux/nfs4.h>
#define NFSDBG_FACILITY NFSDBG_CALLBACK
-typedef unsigned (*callback_process_op_t)(void *, void *);
-typedef unsigned (*callback_decode_arg_t)(struct svc_rqst *, struct xdr_stream *, void *);
-typedef unsigned (*callback_encode_res_t)(struct svc_rqst *, struct xdr_stream *, void *);
+typedef __be32 (*callback_process_op_t)(void *, void *);
+typedef __be32 (*callback_decode_arg_t)(struct svc_rqst *, struct xdr_stream *, void *);
+typedef __be32 (*callback_encode_res_t)(struct svc_rqst *, struct xdr_stream *, void *);
struct callback_op {
static struct callback_op callback_ops[];
-static int nfs4_callback_null(struct svc_rqst *rqstp, void *argp, void *resp)
+static __be32 nfs4_callback_null(struct svc_rqst *rqstp, void *argp, void *resp)
{
return htonl(NFS4_OK);
}
-static int nfs4_decode_void(struct svc_rqst *rqstp, uint32_t *p, void *dummy)
+static int nfs4_decode_void(struct svc_rqst *rqstp, __be32 *p, void *dummy)
{
return xdr_argsize_check(rqstp, p);
}
-static int nfs4_encode_void(struct svc_rqst *rqstp, uint32_t *p, void *dummy)
+static int nfs4_encode_void(struct svc_rqst *rqstp, __be32 *p, void *dummy)
{
return xdr_ressize_check(rqstp, p);
}
-static uint32_t *read_buf(struct xdr_stream *xdr, int nbytes)
+static __be32 *read_buf(struct xdr_stream *xdr, int nbytes)
{
- uint32_t *p;
+ __be32 *p;
p = xdr_inline_decode(xdr, nbytes);
if (unlikely(p == NULL))
return p;
}
-static unsigned decode_string(struct xdr_stream *xdr, unsigned int *len, const char **str)
+static __be32 decode_string(struct xdr_stream *xdr, unsigned int *len, const char **str)
{
- uint32_t *p;
+ __be32 *p;
p = read_buf(xdr, 4);
if (unlikely(p == NULL))
return 0;
}
-static unsigned decode_fh(struct xdr_stream *xdr, struct nfs_fh *fh)
+static __be32 decode_fh(struct xdr_stream *xdr, struct nfs_fh *fh)
{
- uint32_t *p;
+ __be32 *p;
p = read_buf(xdr, 4);
if (unlikely(p == NULL))
return 0;
}
-static unsigned decode_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
+static __be32 decode_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
{
- uint32_t *p;
+ __be32 *p;
unsigned int attrlen;
p = read_buf(xdr, 4);
return 0;
}
-static unsigned decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
+static __be32 decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
{
- uint32_t *p;
+ __be32 *p;
p = read_buf(xdr, 16);
if (unlikely(p == NULL))
return 0;
}
-static unsigned decode_compound_hdr_arg(struct xdr_stream *xdr, struct cb_compound_hdr_arg *hdr)
+static __be32 decode_compound_hdr_arg(struct xdr_stream *xdr, struct cb_compound_hdr_arg *hdr)
{
- uint32_t *p;
+ __be32 *p;
unsigned int minor_version;
- unsigned status;
+ __be32 status;
status = decode_string(xdr, &hdr->taglen, &hdr->tag);
if (unlikely(status != 0))
return 0;
}
-static unsigned decode_op_hdr(struct xdr_stream *xdr, unsigned int *op)
+static __be32 decode_op_hdr(struct xdr_stream *xdr, unsigned int *op)
{
- uint32_t *p;
+ __be32 *p;
p = read_buf(xdr, 4);
if (unlikely(p == NULL))
return htonl(NFS4ERR_RESOURCE);
return 0;
}
-static unsigned decode_getattr_args(struct svc_rqst *rqstp, struct xdr_stream *xdr, struct cb_getattrargs *args)
+static __be32 decode_getattr_args(struct svc_rqst *rqstp, struct xdr_stream *xdr, struct cb_getattrargs *args)
{
- unsigned status;
+ __be32 status;
status = decode_fh(xdr, &args->fh);
if (unlikely(status != 0))
return status;
}
-static unsigned decode_recall_args(struct svc_rqst *rqstp, struct xdr_stream *xdr, struct cb_recallargs *args)
+static __be32 decode_recall_args(struct svc_rqst *rqstp, struct xdr_stream *xdr, struct cb_recallargs *args)
{
- uint32_t *p;
- unsigned status;
+ __be32 *p;
+ __be32 status;
args->addr = &rqstp->rq_addr;
status = decode_stateid(xdr, &args->stateid);
status = decode_fh(xdr, &args->fh);
out:
dprintk("%s: exit with status = %d\n", __FUNCTION__, status);
- return 0;
+ return status;
}
-static unsigned encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
+static __be32 encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
{
- uint32_t *p;
+ __be32 *p;
p = xdr_reserve_space(xdr, 4 + len);
if (unlikely(p == NULL))
#define CB_SUPPORTED_ATTR0 (FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE)
#define CB_SUPPORTED_ATTR1 (FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY)
-static unsigned encode_attr_bitmap(struct xdr_stream *xdr, const uint32_t *bitmap, uint32_t **savep)
+static __be32 encode_attr_bitmap(struct xdr_stream *xdr, const uint32_t *bitmap, __be32 **savep)
{
- uint32_t bm[2];
- uint32_t *p;
+ __be32 bm[2];
+ __be32 *p;
bm[0] = htonl(bitmap[0] & CB_SUPPORTED_ATTR0);
bm[1] = htonl(bitmap[1] & CB_SUPPORTED_ATTR1);
return 0;
}
-static unsigned encode_attr_change(struct xdr_stream *xdr, const uint32_t *bitmap, uint64_t change)
+static __be32 encode_attr_change(struct xdr_stream *xdr, const uint32_t *bitmap, uint64_t change)
{
- uint32_t *p;
+ __be32 *p;
if (!(bitmap[0] & FATTR4_WORD0_CHANGE))
return 0;
return 0;
}
-static unsigned encode_attr_size(struct xdr_stream *xdr, const uint32_t *bitmap, uint64_t size)
+static __be32 encode_attr_size(struct xdr_stream *xdr, const uint32_t *bitmap, uint64_t size)
{
- uint32_t *p;
+ __be32 *p;
if (!(bitmap[0] & FATTR4_WORD0_SIZE))
return 0;
return 0;
}
-static unsigned encode_attr_time(struct xdr_stream *xdr, const struct timespec *time)
+static __be32 encode_attr_time(struct xdr_stream *xdr, const struct timespec *time)
{
- uint32_t *p;
+ __be32 *p;
p = xdr_reserve_space(xdr, 12);
if (unlikely(p == 0))
return 0;
}
-static unsigned encode_attr_ctime(struct xdr_stream *xdr, const uint32_t *bitmap, const struct timespec *time)
+static __be32 encode_attr_ctime(struct xdr_stream *xdr, const uint32_t *bitmap, const struct timespec *time)
{
if (!(bitmap[1] & FATTR4_WORD1_TIME_METADATA))
return 0;
return encode_attr_time(xdr,time);
}
-static unsigned encode_attr_mtime(struct xdr_stream *xdr, const uint32_t *bitmap, const struct timespec *time)
+static __be32 encode_attr_mtime(struct xdr_stream *xdr, const uint32_t *bitmap, const struct timespec *time)
{
if (!(bitmap[1] & FATTR4_WORD1_TIME_MODIFY))
return 0;
return encode_attr_time(xdr,time);
}
-static unsigned encode_compound_hdr_res(struct xdr_stream *xdr, struct cb_compound_hdr_res *hdr)
+static __be32 encode_compound_hdr_res(struct xdr_stream *xdr, struct cb_compound_hdr_res *hdr)
{
- unsigned status;
+ __be32 status;
hdr->status = xdr_reserve_space(xdr, 4);
if (unlikely(hdr->status == NULL))
return 0;
}
-static unsigned encode_op_hdr(struct xdr_stream *xdr, uint32_t op, uint32_t res)
+static __be32 encode_op_hdr(struct xdr_stream *xdr, uint32_t op, __be32 res)
{
- uint32_t *p;
+ __be32 *p;
p = xdr_reserve_space(xdr, 8);
if (unlikely(p == NULL))
return 0;
}
-static unsigned encode_getattr_res(struct svc_rqst *rqstp, struct xdr_stream *xdr, const struct cb_getattrres *res)
+static __be32 encode_getattr_res(struct svc_rqst *rqstp, struct xdr_stream *xdr, const struct cb_getattrres *res)
{
- uint32_t *savep;
- unsigned status = res->status;
+ __be32 *savep = NULL;
+ __be32 status = res->status;
if (unlikely(status != 0))
goto out;
return status;
}
-static unsigned process_op(struct svc_rqst *rqstp,
+static __be32 process_op(struct svc_rqst *rqstp,
struct xdr_stream *xdr_in, void *argp,
struct xdr_stream *xdr_out, void *resp)
{
- struct callback_op *op;
- unsigned int op_nr;
- unsigned int status = 0;
+ struct callback_op *op = &callback_ops[0];
+ unsigned int op_nr = OP_CB_ILLEGAL;
+ __be32 status = 0;
long maxlen;
- unsigned res;
+ __be32 res;
dprintk("%s: start\n", __FUNCTION__);
status = decode_op_hdr(xdr_in, &op_nr);
- if (unlikely(status != 0)) {
- op_nr = OP_CB_ILLEGAL;
- op = &callback_ops[0];
- } else if (unlikely(op_nr != OP_CB_GETATTR && op_nr != OP_CB_RECALL)) {
- op_nr = OP_CB_ILLEGAL;
- op = &callback_ops[0];
- status = htonl(NFS4ERR_OP_ILLEGAL);
- } else
- op = &callback_ops[op_nr];
+ if (likely(status == 0)) {
+ switch (op_nr) {
+ case OP_CB_GETATTR:
+ case OP_CB_RECALL:
+ op = &callback_ops[op_nr];
+ break;
+ default:
+ op_nr = OP_CB_ILLEGAL;
+ op = &callback_ops[0];
+ status = htonl(NFS4ERR_OP_ILLEGAL);
+ }
+ }
maxlen = xdr_out->end - xdr_out->p;
if (maxlen > 0 && maxlen < PAGE_SIZE) {
/*
* Decode, process and encode a COMPOUND
*/
-static int nfs4_callback_compound(struct svc_rqst *rqstp, void *argp, void *resp)
+static __be32 nfs4_callback_compound(struct svc_rqst *rqstp, void *argp, void *resp)
{
struct cb_compound_hdr_arg hdr_arg;
struct cb_compound_hdr_res hdr_res;
struct xdr_stream xdr_in, xdr_out;
- uint32_t *p;
- unsigned int status;
+ __be32 *p;
+ __be32 status;
unsigned int nops = 1;
dprintk("%s: start\n", __FUNCTION__);
xdr_init_decode(&xdr_in, &rqstp->rq_arg, rqstp->rq_arg.head[0].iov_base);
- p = (uint32_t*)((char *)rqstp->rq_res.head[0].iov_base + rqstp->rq_res.head[0].iov_len);
+ p = (__be32*)((char *)rqstp->rq_res.head[0].iov_base + rqstp->rq_res.head[0].iov_len);
xdr_init_encode(&xdr_out, &rqstp->rq_res, p);
decode_compound_hdr_arg(&xdr_in, &hdr_arg);
hdr_res.taglen = hdr_arg.taglen;
hdr_res.tag = hdr_arg.tag;
+ hdr_res.nops = NULL;
encode_compound_hdr_res(&xdr_out, &hdr_res);
for (;;) {