- p = gsd->body_start;
- gsd->body_start = NULL;
- /* move accept_stat to right place: */
- memcpy(p, p + 2, 4);
- /* Don't wrap in failure case: */
- /* Counting on not getting here if call was not even accepted! */
- if (*p != rpc_success) {
- resbuf->head[0].iov_len -= 2 * 4;
- goto out;
- }
- p++;
- integ_offset = (u8 *)(p + 1) - (u8 *)resbuf->head[0].iov_base;
- integ_len = resbuf->len - integ_offset;
- BUG_ON(integ_len % 4);
- *p++ = htonl(integ_len);
- *p++ = htonl(gc->gc_seq);
- if (xdr_buf_subsegment(resbuf, &integ_buf, integ_offset,
- integ_len))
- BUG();
- if (resbuf->page_len == 0
- && resbuf->head[0].iov_len + RPC_MAX_AUTH_SIZE
- < PAGE_SIZE) {
- BUG_ON(resbuf->tail[0].iov_len);
- /* Use head for everything */
- resv = &resbuf->head[0];
- } else if (resbuf->tail[0].iov_base == NULL) {
- if (resbuf->head[0].iov_len + RPC_MAX_AUTH_SIZE > PAGE_SIZE)
- goto out_err;
- resbuf->tail[0].iov_base = resbuf->head[0].iov_base
- + resbuf->head[0].iov_len;
- resbuf->tail[0].iov_len = 0;
- rqstp->rq_restailpage = 0;
- resv = &resbuf->tail[0];
- } else {
- resv = &resbuf->tail[0];
- }
- mic.data = (u8 *)resv->iov_base + resv->iov_len + 4;
- if (gss_get_mic(gsd->rsci->mechctx, &integ_buf, &mic))
- goto out_err;
- svc_putu32(resv, htonl(mic.len));
- memset(mic.data + mic.len, 0,
- round_up_to_quad(mic.len) - mic.len);
- resv->iov_len += XDR_QUADLEN(mic.len) << 2;
- /* not strictly required: */
- resbuf->len += XDR_QUADLEN(mic.len) << 2;
- BUG_ON(resv->iov_len > PAGE_SIZE);
-out:
- stat = 0;
-out_err:
- return stat;
-}
-
-static inline int
-svcauth_gss_wrap_resp_priv(struct svc_rqst *rqstp)
-{
- struct gss_svc_data *gsd = (struct gss_svc_data *)rqstp->rq_auth_data;
- struct rpc_gss_wire_cred *gc = &gsd->clcred;
- struct xdr_buf *resbuf = &rqstp->rq_res;
- struct page **inpages = NULL;
- u32 *p;
- int offset, *len;
- int pad;
-
- p = gsd->body_start;
- gsd->body_start = NULL;
- /* move accept_stat to right place: */
- memcpy(p, p + 2, 4);
- /* Don't wrap in failure case: */
- /* Counting on not getting here if call was not even accepted! */
- if (*p != rpc_success) {
- resbuf->head[0].iov_len -= 2 * 4;
- return 0;
- }
- p++;
- len = p++;
- offset = (u8 *)p - (u8 *)resbuf->head[0].iov_base;
- *p++ = htonl(gc->gc_seq);
- inpages = resbuf->pages;
- /* XXX: Would be better to write some xdr helper functions for
- * nfs{2,3,4}xdr.c that place the data right, instead of copying: */
- if (resbuf->tail[0].iov_base && rqstp->rq_restailpage == 0) {
- BUG_ON(resbuf->tail[0].iov_base >= resbuf->head[0].iov_base
- + PAGE_SIZE);
- BUG_ON(resbuf->tail[0].iov_base < resbuf->head[0].iov_base);
- if (resbuf->tail[0].iov_len + resbuf->head[0].iov_len
- + 2 * RPC_MAX_AUTH_SIZE > PAGE_SIZE)
- return -ENOMEM;
- memmove(resbuf->tail[0].iov_base + RPC_MAX_AUTH_SIZE,
- resbuf->tail[0].iov_base,
- resbuf->tail[0].iov_len);
- resbuf->tail[0].iov_base += RPC_MAX_AUTH_SIZE;
- }
- if (resbuf->tail[0].iov_base == NULL) {
- if (resbuf->head[0].iov_len + 2*RPC_MAX_AUTH_SIZE > PAGE_SIZE)
- return -ENOMEM;
- resbuf->tail[0].iov_base = resbuf->head[0].iov_base
- + resbuf->head[0].iov_len + RPC_MAX_AUTH_SIZE;
- resbuf->tail[0].iov_len = 0;
- rqstp->rq_restailpage = 0;
- }
- if (gss_wrap(gsd->rsci->mechctx, offset, resbuf, inpages))
- return -ENOMEM;
- *len = htonl(resbuf->len - offset);
- pad = 3 - ((resbuf->len - offset - 1)&3);
- p = (u32 *)(resbuf->tail[0].iov_base + resbuf->tail[0].iov_len);
- memset(p, 0, pad);
- resbuf->tail[0].iov_len += pad;
- resbuf->len += pad;
- return 0;
-}
-
-static int
-svcauth_gss_release(struct svc_rqst *rqstp)
-{
- struct gss_svc_data *gsd = (struct gss_svc_data *)rqstp->rq_auth_data;
- struct rpc_gss_wire_cred *gc = &gsd->clcred;
- struct xdr_buf *resbuf = &rqstp->rq_res;
- int stat = -EINVAL;
-