check_pm_runtime_get_sync.c

   1 /*
   2  * Copyright (C) 2020 Oracle.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, see http://www.gnu.org/copyleft/gpl.txt
  16  */
  17
  18 #include "smatch.h"
  19 #include "smatch_slist.h"
  20
  21 static int my_id;
  22
  23 static unsigned long calls_get_sync;
  24
  25 static void match_condition(struct expression *expr)
  26 {
  27         struct expression *assigned;
  28
  29         if (!calls_get_sync)
  30                 return;
  31
  32         assigned = get_assigned_expr(expr);
  33         if (!assigned)
  34                 return;
  35         if (assigned->type != EXPR_CALL)
  36                 return;
  37         if (!sym_name_is("pm_runtime_get_sync", assigned->fn))
  38                 return;
  39         sm_warning("pm_runtime_get_sync() also returns 1 on success");
  40 }
  41
  42 static void match_pm_runtime_get_sync(const char *fn, struct expression *expr, void *_arg_nr)
  43 {
  44         calls_get_sync = 1;
  45 }
  46
  47 void check_pm_runtime_get_sync(int id)
  48 {
  49         my_id = id;
  50
  51         add_function_data(&calls_get_sync);
  52
  53         add_hook(&match_condition, CONDITION_HOOK);
  54         add_function_assign_hook("pm_runtime_get_sync", &match_pm_runtime_get_sync, INT_PTR(1));
  55 }