/*
* Common NFS XDR functions as inlines
*/
-static inline __be32 *
-xdr_encode_fhandle(__be32 *p, const struct nfs_fh *fhandle)
-{
- memcpy(p, fhandle->data, NFS2_FHSIZE);
- return p + XDR_QUADLEN(NFS2_FHSIZE);
-}
-
static inline __be32 *
xdr_decode_fhandle(__be32 *p, struct nfs_fh *fhandle)
{
return p;
}
-static inline __be32 *
-xdr_encode_sattr(__be32 *p, struct iattr *attr)
-{
- const __be32 not_set = __constant_htonl(0xFFFFFFFF);
-
- *p++ = (attr->ia_valid & ATTR_MODE) ? htonl(attr->ia_mode) : not_set;
- *p++ = (attr->ia_valid & ATTR_UID) ? htonl(attr->ia_uid) : not_set;
- *p++ = (attr->ia_valid & ATTR_GID) ? htonl(attr->ia_gid) : not_set;
- *p++ = (attr->ia_valid & ATTR_SIZE) ? htonl(attr->ia_size) : not_set;
-
- if (attr->ia_valid & ATTR_ATIME_SET) {
- p = xdr_encode_time(p, &attr->ia_atime);
- } else if (attr->ia_valid & ATTR_ATIME) {
- p = xdr_encode_current_server_time(p, &attr->ia_atime);
- } else {
- *p++ = not_set;
- *p++ = not_set;
- }
-
- if (attr->ia_valid & ATTR_MTIME_SET) {
- p = xdr_encode_time(p, &attr->ia_mtime);
- } else if (attr->ia_valid & ATTR_MTIME) {
- p = xdr_encode_current_server_time(p, &attr->ia_mtime);
- } else {
- *p++ = not_set;
- *p++ = not_set;
- }
- return p;
-}
-
/*
* Encode/decode NFSv2 basic data types
*
/*
- * NFS encode functions
- */
-/*
- * Encode file handle argument
- * GETATTR, READLINK, STATFS
+ * NFSv2 XDR encode functions
+ *
+ * NFSv2 argument types are defined in section 2.2 of RFC 1094:
+ * "NFS: Network File System Protocol Specification".
*/
-static int
-nfs_xdr_fhandle(struct rpc_rqst *req, __be32 *p, struct nfs_fh *fh)
-{
- p = xdr_encode_fhandle(p, fh);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
static int nfs2_xdr_enc_fhandle(struct rpc_rqst *req, __be32 *p,
const struct nfs_fh *fh)
return 0;
}
-/*
- * Encode SETATTR arguments
- */
-static int
-nfs_xdr_sattrargs(struct rpc_rqst *req, __be32 *p, struct nfs_sattrargs *args)
-{
- p = xdr_encode_fhandle(p, args->fh);
- p = xdr_encode_sattr(p, args->sattr);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
/*
* 2.2.3. sattrargs
*
return 0;
}
-/*
- * Encode directory ops argument
- * LOOKUP, RMDIR
- */
-static int
-nfs_xdr_diropargs(struct rpc_rqst *req, __be32 *p, struct nfs_diropargs *args)
-{
- p = xdr_encode_fhandle(p, args->fh);
- p = xdr_encode_array(p, args->name, args->len);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
static int nfs2_xdr_enc_diropargs(struct rpc_rqst *req, __be32 *p,
const struct nfs_diropargs *args)
{
return 0;
}
-/*
- * Encode REMOVE argument
- */
-static int
-nfs_xdr_removeargs(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args)
-{
- p = xdr_encode_fhandle(p, args->fh);
- p = xdr_encode_array(p, args->name.name, args->name.len);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
static int nfs2_xdr_enc_readlinkargs(struct rpc_rqst *req, __be32 *p,
const struct nfs_readlinkargs *args)
{
return 0;
}
-/*
- * Arguments to a READ call. Since we read data directly into the page
- * cache, we also set up the reply iovec here so that iov[1] points
- * exactly to the page we want to fetch.
- */
-static int
-nfs_xdr_readargs(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args)
-{
- struct rpc_auth *auth = req->rq_cred->cr_auth;
- unsigned int replen;
- u32 offset = (u32)args->offset;
- u32 count = args->count;
-
- p = xdr_encode_fhandle(p, args->fh);
- *p++ = htonl(offset);
- *p++ = htonl(count);
- *p++ = htonl(count);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
-
- /* Inline the page array */
- replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS_readres_sz) << 2;
- xdr_inline_pages(&req->rq_rcv_buf, replen,
- args->pages, args->pgbase, count);
- req->rq_rcv_buf.flags |= XDRBUF_READ;
- return 0;
-}
-
/*
* 2.2.7. readargs
*
}
-/*
- * Write arguments. Splice the buffer to be written into the iovec.
- */
-static int
-nfs_xdr_writeargs(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
-{
- struct xdr_buf *sndbuf = &req->rq_snd_buf;
- u32 offset = (u32)args->offset;
- u32 count = args->count;
-
- p = xdr_encode_fhandle(p, args->fh);
- *p++ = htonl(offset);
- *p++ = htonl(offset);
- *p++ = htonl(count);
- *p++ = htonl(count);
- sndbuf->len = xdr_adjust_iovec(sndbuf->head, p);
-
- /* Copy the page array */
- xdr_encode_pages(sndbuf, args->pages, args->pgbase, count);
- sndbuf->flags |= XDRBUF_WRITE;
- return 0;
-}
-
/*
* 2.2.9. writeargs
*
return 0;
}
-/*
- * Encode create arguments
- * CREATE, MKDIR
- */
-static int
-nfs_xdr_createargs(struct rpc_rqst *req, __be32 *p, struct nfs_createargs *args)
-{
- p = xdr_encode_fhandle(p, args->fh);
- p = xdr_encode_array(p, args->name, args->len);
- p = xdr_encode_sattr(p, args->sattr);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
/*
* 2.2.10. createargs
*
return 0;
}
-/*
- * Encode RENAME arguments
- */
-static int
-nfs_xdr_renameargs(struct rpc_rqst *req, __be32 *p, struct nfs_renameargs *args)
-{
- p = xdr_encode_fhandle(p, args->old_dir);
- p = xdr_encode_array(p, args->old_name->name, args->old_name->len);
- p = xdr_encode_fhandle(p, args->new_dir);
- p = xdr_encode_array(p, args->new_name->name, args->new_name->len);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
/*
* 2.2.12. renameargs
*
return 0;
}
-/*
- * Encode LINK arguments
- */
-static int
-nfs_xdr_linkargs(struct rpc_rqst *req, __be32 *p, struct nfs_linkargs *args)
-{
- p = xdr_encode_fhandle(p, args->fromfh);
- p = xdr_encode_fhandle(p, args->tofh);
- p = xdr_encode_array(p, args->toname, args->tolen);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
/*
* 2.2.13. linkargs
*
return 0;
}
-/*
- * Encode SYMLINK arguments
- */
-static int
-nfs_xdr_symlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs_symlinkargs *args)
-{
- struct xdr_buf *sndbuf = &req->rq_snd_buf;
- size_t pad;
-
- p = xdr_encode_fhandle(p, args->fromfh);
- p = xdr_encode_array(p, args->fromname, args->fromlen);
- *p++ = htonl(args->pathlen);
- sndbuf->len = xdr_adjust_iovec(sndbuf->head, p);
-
- xdr_encode_pages(sndbuf, args->pages, 0, args->pathlen);
-
- /*
- * xdr_encode_pages may have added a few bytes to ensure the
- * pathname ends on a 4-byte boundary. Start encoding the
- * attributes after the pad bytes.
- */
- pad = sndbuf->tail->iov_len;
- if (pad > 0)
- p++;
- p = xdr_encode_sattr(p, args->sattr);
- sndbuf->len += xdr_adjust_iovec(sndbuf->tail, p) - pad;
- return 0;
-}
-
/*
* 2.2.14. symlinkargs
*
return 0;
}
-/*
- * Encode arguments to readdir call
- */
-static int
-nfs_xdr_readdirargs(struct rpc_rqst *req, __be32 *p, struct nfs_readdirargs *args)
-{
- struct rpc_auth *auth = req->rq_cred->cr_auth;
- unsigned int replen;
- u32 count = args->count;
-
- p = xdr_encode_fhandle(p, args->fh);
- *p++ = htonl(args->cookie);
- *p++ = htonl(count); /* see above */
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
-
- /* Inline the page array */
- replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS_readdirres_sz) << 2;
- xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, count);
- return 0;
-}
-
/*
* 2.2.17. readdirargs
*
return 0;
}
-/*
- * Encode READLINK args
- */
-static int
-nfs_xdr_readlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs_readlinkargs *args)
-{
- struct rpc_auth *auth = req->rq_cred->cr_auth;
- unsigned int replen;
-
- p = xdr_encode_fhandle(p, args->fh);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
-
- /* Inline the page array */
- replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS_readlinkres_sz) << 2;
- xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, args->pgbase, args->pglen);
- return 0;
-}
-
/*
* Decode READLINK reply
*/
projects / GitHub / LineageOS / G12 / android_kernel_amlogic_linux-4.9.git / commitdiff