source3/lib/tallocmsg.c

   1 /*
   2    samba -- Unix SMB/CIFS implementation.
   3    Copyright (C) 2001, 2002 by Martin Pool
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17 */
  18
  19 #include "replace.h"
  20 #include "source3/include/messages.h"
  21 #include "source3/lib/tallocmsg.h"
  22 #include "lib/util/talloc_report_printf.h"
  23 #include "lib/util/debug.h"
  24 #include "lib/util/util_file.h"
  25
  26 static bool pool_usage_filter(struct messaging_rec *rec, void *private_data)
  27 {
  28         FILE *f = NULL;
  29
  30         if (rec->msg_type != MSG_REQ_POOL_USAGE) {
  31                 return false;
  32         }
  33
  34         DBG_DEBUG("Got MSG_REQ_POOL_USAGE\n");
  35
  36         if (rec->num_fds != 1) {
  37                 DBG_DEBUG("Got %"PRIu8" fds, expected one\n", rec->num_fds);
  38                 return false;
  39         }
  40
  41         f = fdopen_keepfd(rec->fds[0], "w");
  42         if (f == NULL) {
  43                 DBG_DEBUG("fdopen failed: %s\n", strerror(errno));
  44                 return false;
  45         }
  46
  47         talloc_full_report_printf(NULL, f);
  48
  49         fclose(f);
  50         /*
  51          * Returning false, means messaging_dispatch_waiters()
  52          * won't call messaging_filtered_read_done() and
  53          * our messaging_filtered_read_send() stays alive
  54          * and will get messages.
  55          */
  56         return false;
  57 }
  58
  59 /**
  60  * Register handler for MSG_REQ_POOL_USAGE
  61  **/
  62 void register_msg_pool_usage(
  63         TALLOC_CTX *mem_ctx, struct messaging_context *msg_ctx)
  64 {
  65         struct tevent_req *req = NULL;
  66
  67         req = messaging_filtered_read_send(
  68                 mem_ctx,
  69                 messaging_tevent_context(msg_ctx),
  70                 msg_ctx,
  71                 pool_usage_filter,
  72                 NULL);
  73         if (req == NULL) {
  74                 DBG_WARNING("messaging_filtered_read_send failed\n");
  75                 return;
  76         }
  77         DBG_INFO("Registered MSG_REQ_POOL_USAGE\n");
  78 }