lib/debug.c

   1 /*
   2  * Debugging utilities.
   3  * Copyright (C) 2018  Cumulus Networks, Inc.
   4  * Quentin Young
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the Free
   8  * Software Foundation; either version 2 of the License, or (at your option)
   9  * any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14  * more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; see the file COPYING; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20 #include <zebra.h>
  21 #include "typesafe.h"
  22 #include "debug.h"
  23 #include "command.h"
  24
  25 static struct debug_cb_list_head cb_head;
  26
  27 DECLARE_LIST(debug_cb_list, struct debug_callbacks, item)
  28
  29 /* All code in this section should be reentrant and MT-safe */
  30
  31 DEFUN_NOSH(debug_all, debug_all_cmd, "[no] debug all",
  32            NO_STR DEBUG_STR "Toggle all debugging output\n")
  33 {
  34         struct debug_callbacks *cb;
  35
  36         bool set = !strmatch(argv[0]->text, "no");
  37         uint32_t mode = DEBUG_NODE2MODE(vty->node);
  38
  39         frr_each (debug_cb_list, &cb_head, cb)
  40                 cb->debug_set_all(mode, set);
  41
  42         return CMD_SUCCESS;
  43 }
  44
  45 /* ------------------------------------------------------------------------- */
  46
  47 void debug_init(struct debug_callbacks *cb)
  48 {
  49         static bool inited = false;
  50
  51         if (!inited) {
  52                 inited = true;
  53                 debug_cb_list_init(&cb_head);
  54         }
  55
  56         debug_cb_list_add_head(&cb_head, cb);
  57 }
  58
  59 void debug_init_cli(void)
  60 {
  61         install_element(ENABLE_NODE, &debug_all_cmd);
  62         install_element(CONFIG_NODE, &debug_all_cmd);
  63 }