lib/util/tevent_unix.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Wrap unix errno around tevent_req
   4    Copyright (C) Volker Lendecke 2009
   5
   6      ** NOTE! The following LGPL license applies to the tevent_unix
   7      ** helper library. This does NOT imply that all of Samba is released
   8      ** under the LGPL
   9
  10    This library is free software; you can redistribute it and/or
  11    modify it under the terms of the GNU Lesser General Public
  12    License as published by the Free Software Foundation; either
  13    version 3 of the License, or (at your option) any later version.
  14
  15    This library is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18    Library General Public License for more details.
  19
  20    You should have received a copy of the GNU Lesser General Public License
  21    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22 */
  23
  24 #include "../replace/replace.h"
  25 #include "tevent_unix.h"
  26
  27 bool tevent_req_is_unix_error(struct tevent_req *req, int *perrno)
  28 {
  29         enum tevent_req_state state;
  30         uint64_t err;
  31
  32         if (!tevent_req_is_error(req, &state, &err)) {
  33                 return false;
  34         }
  35         switch (state) {
  36         case TEVENT_REQ_TIMED_OUT:
  37                 *perrno = ETIMEDOUT;
  38                 break;
  39         case TEVENT_REQ_NO_MEMORY:
  40                 *perrno = ENOMEM;
  41                 break;
  42         case TEVENT_REQ_USER_ERROR:
  43                 *perrno = err;
  44                 break;
  45         default:
  46                 *perrno = EINVAL;
  47                 break;
  48         }
  49         return true;
  50 }
  51
  52 int tevent_req_simple_recv_unix(struct tevent_req *req)
  53 {
  54         int err = 0;
  55
  56         /*
  57          * Ignore result of tevent_req_is_unix_error, we're only interested in
  58          * the status
  59          */
  60         tevent_req_is_unix_error(req, &err);
  61         tevent_req_received(req);
  62         return err;
  63 }
  64
  65 bool tevent_req_poll_unix(struct tevent_req *req, struct tevent_context *ev,
  66                           int *err)
  67 {
  68         bool ret = tevent_req_poll(req, ev);
  69         if (!ret) {
  70                 *err = errno;
  71         }
  72         return ret;
  73 }