2 * Copyright (c) 2002-2003 M. Warner Losh.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * $FreeBSD: src/sbin/devd/devd.hh,v 1.5 2007/12/21 01:00:04 imp Exp $
27 * $DragonFly: src/sbin/devd/devd.hh,v 1.1 2008/10/03 00:26:21 hasso Exp $
36 * var_list is a collection of variables. These collections of variables
37 * are stacked up and popped down for each event that we have to process.
38 * We have multiple levels so that we can push variables that are unique
39 * to the event in question, in addition to having global variables. This
40 * allows for future flexibility.
46 virtual ~var_list() {}
47 /** Set a variable in this var list.
49 void set_variable(const std::string &var, const std::string &val);
50 /** Get the variable out of this, and no other, var_list. If
51 * no variable of %var is set, then %bogus will be returned.
53 const std::string &get_variable(const std::string &var) const;
54 /** Is there a variable of %var set in thi stable?
56 bool is_set(const std::string &var) const;
57 /** A completely bogus string.
59 static const std::string bogus;
60 static const std::string nothing;
62 std::map<std::string, std::string> _vars;
66 * eps is short for event_proc_single. It is a single entry in an
67 * event_proc. Each keyword needs its own subclass from eps.
74 /** Does this eps match the current config?
76 virtual bool do_match(config &) = 0;
77 /** Perform some action for this eps.
79 virtual bool do_action(config &) = 0;
83 * match is the subclass used to match an individual variable. Its
86 class match : public eps
89 match(config &, const char *var, const char *re);
91 virtual bool do_match(config &);
92 virtual bool do_action(config &) { return true; }
100 * media is the subclass used to match an individual variable. Its
103 class media : public eps
106 media(config &, const char *var, const char *type);
108 virtual bool do_match(config &);
109 virtual bool do_action(config &) { return true; }
116 * action is used to fork a process. It matches everything.
118 class action : public eps
121 action(const char *cmd);
123 virtual bool do_match(config &) { return true; }
124 virtual bool do_action(config &);
133 virtual ~event_proc();
134 int get_priority() const { return (_prio); }
135 void set_priority(int prio) { _prio = prio; }
137 bool matches(config &);
141 std::vector<eps *> _epsvec;
147 config() { _pidfile = ""; push_var_table(); }
148 virtual ~config() { reset(); }
149 void add_attach(int, event_proc *);
150 void add_detach(int, event_proc *);
151 void add_directory(const char *);
152 void add_nomatch(int, event_proc *);
153 void add_notify(int, event_proc *);
154 void set_pidfile(const char *);
158 void write_pidfile();
159 void remove_pidfile();
160 void push_var_table();
161 void pop_var_table();
162 void set_variable(const char *var, const char *val);
163 const std::string &get_variable(const std::string &var);
164 const std::string expand_string(const std::string &var);
165 char *set_vars(char *);
166 void find_and_execute(char);
168 void sort_vector(std::vector<event_proc *> &);
169 void parse_one_file(const char *fn);
170 void parse_files_in_dir(const char *dirname);
171 void expand_one(const char *&src, std::string &dst);
172 bool is_id_char(char);
173 bool chop_var(char *&buffer, char *&lhs, char *&rhs);
175 std::vector<std::string> _dir_list;
176 std::string _pidfile;
177 std::vector<var_list *> _var_list_table;
178 std::vector<event_proc *> _attach_list;
179 std::vector<event_proc *> _detach_list;
180 std::vector<event_proc *> _nomatch_list;
181 std::vector<event_proc *> _notify_list;