diff options
Diffstat (limited to 'net/sunrpc/auth_gss/gss_rpc_upcall.c')
| -rw-r--r-- | net/sunrpc/auth_gss/gss_rpc_upcall.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/net/sunrpc/auth_gss/gss_rpc_upcall.c b/net/sunrpc/auth_gss/gss_rpc_upcall.c index af7ffd447fee..f1eb0d16666c 100644 --- a/net/sunrpc/auth_gss/gss_rpc_upcall.c +++ b/net/sunrpc/auth_gss/gss_rpc_upcall.c @@ -213,6 +213,26 @@ static int gssp_call(struct net *net, struct rpc_message *msg) return status; } +static void gssp_free_receive_pages(struct gssx_arg_accept_sec_context *arg) +{ + int i; + + for (i = 0; i < arg->npages && arg->pages[i]; i++) + __free_page(arg->pages[i]); +} + +static int gssp_alloc_receive_pages(struct gssx_arg_accept_sec_context *arg) +{ + arg->npages = DIV_ROUND_UP(NGROUPS_MAX * 4, PAGE_SIZE); + arg->pages = kzalloc(arg->npages * sizeof(struct page *), GFP_KERNEL); + /* + * XXX: actual pages are allocated by xdr layer in + * xdr_partial_copy_from_skb. + */ + if (!arg->pages) + return -ENOMEM; + return 0; +} /* * Public functions @@ -261,10 +281,16 @@ int gssp_accept_sec_context_upcall(struct net *net, arg.context_handle = &ctxh; res.output_token->len = GSSX_max_output_token_sz; + ret = gssp_alloc_receive_pages(&arg); + if (ret) + return ret; + /* use nfs/ for targ_name ? */ ret = gssp_call(net, &msg); + gssp_free_receive_pages(&arg); + /* we need to fetch all data even in case of error so * that we can free special strctures is they have been allocated */ data->major_status = res.status.major_status; |